eventespresso / event-espresso-core

admin_pages/messages/Messages_Admin_Page.core.php

Indentation +4640 added lines, -4640 removed lines

@@ -17,2683 +17,2683 @@ 
  */
 class Messages_Admin_Page extends EE_Admin_Page
 {
-    /**
-     * @var EEM_Message
-     */
-    private $MSG_MODEL;
-
-    /**
-     * @var EEM_Message_Template
-     */
-    private $MTP_MODEL;
-
-    /**
-     * @var EEM_Message_Template_Group
-     */
-    private $MTG_MODEL;
-
-    /**
-     * @var EE_Message_Resource_Manager $_message_resource_manager
-     */
-    protected $_message_resource_manager;
-
-    /**
-     * @var string
-     */
-    protected $_active_message_type_name = '';
-
-    /**
-     * @var string
-     */
-    protected $_active_messenger_name = '';
-
-    /**
-     * @var EE_messenger $_active_messenger
-     */
-    protected $_active_messenger;
-
-    protected $_activate_meta_box_type;
-
-    protected $_current_message_meta_box;
-
-    protected $_current_message_meta_box_object;
-
-    protected $_context_switcher;
-
-    protected $_shortcodes           = [];
-
-    protected $_active_messengers    = [];
-
-    protected $_active_message_types = [];
-
-    /**
-     * @var EE_Message_Template_Group $_message_template_group
-     */
-    protected $_message_template_group;
-
-    protected $_m_mt_settings = [];
-
-
-    /**
-     * This is set via the _set_message_template_group method and holds whatever the template pack for the group is.
-     * IF there is no group then it gets automatically set to the Default template pack.
-     *
-     * @since 4.5.0
-     *
-     * @var EE_Messages_Template_Pack
-     */
-    protected $_template_pack;
-
-
-    /**
-     * This is set via the _set_message_template_group method and holds whatever the template pack variation for the
-     * group is.  If there is no group then it automatically gets set to default.
-     *
-     * @since 4.5.0
-     *
-     * @var string
-     */
-    protected $_variation;
-
-
-    /**
-     * @param bool $routing
-     * @throws EE_Error
-     * @throws ReflectionException
-     */
-    public function __construct($routing = true)
-    {
-        // make sure messages autoloader is running
-        EED_Messages::set_autoloaders();
-        parent::__construct($routing);
-    }
-
-
-    /**
-     * @return EEM_Message
-     * @throws EE_Error
-     */
-    public function getMsgModel()
-    {
-        if (! $this->MSG_MODEL instanceof EEM_Message) {
-            $this->MSG_MODEL = EEM_Message::instance();
-        }
-        return $this->MSG_MODEL;
-    }
-
-
-    /**
-     * @return EEM_Message_Template
-     * @throws EE_Error
-     */
-    public function getMtpModel()
-    {
-        if (! $this->MTP_MODEL instanceof EEM_Message_Template) {
-            $this->MTP_MODEL = EEM_Message_Template::instance();
-        }
-        return $this->MTP_MODEL;
-    }
-
-
-    /**
-     * @return EEM_Message_Template_Group
-     * @throws EE_Error
-     */
-    public function getMtgModel()
-    {
-        if (! $this->MTG_MODEL instanceof EEM_Message_Template_Group) {
-            $this->MTG_MODEL = EEM_Message_Template_Group::instance();
-        }
-        return $this->MTG_MODEL;
-    }
-
-
-    /**
-     * @throws EE_Error
-     * @throws ReflectionException
-     */
-    protected function _init_page_props()
-    {
-        $this->page_slug        = EE_MSG_PG_SLUG;
-        $this->page_label       = esc_html__('Messages Settings', 'event_espresso');
-        $this->_admin_base_url  = EE_MSG_ADMIN_URL;
-        $this->_admin_base_path = EE_MSG_ADMIN;
-
-        $messenger    = $this->request->getRequestParam('messenger', '');
-        $message_type = $this->request->getRequestParam('message_type', '');
-        $this->_active_messenger_name    = $this->request->getRequestParam('MTP_messenger', $messenger);
-        $this->_active_message_type_name = $this->request->getRequestParam('MTP_message_type', $message_type);
-
-        $this->_load_message_resource_manager();
-    }
-
-
-    /**
-     * loads messenger objects into the $_active_messengers property (so we can access the needed methods)
-     *
-     * @throws EE_Error
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     * @throws InvalidArgumentException
-     * @throws ReflectionException
-     */
-    protected function _load_message_resource_manager()
-    {
-        $this->_message_resource_manager = EE_Registry::instance()->load_lib('Message_Resource_Manager');
-    }
-
-
-    /**
-     * @return array
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     * @deprecated 4.9.9.rc.014
-     */
-    public function get_messengers_for_list_table()
-    {
-        EE_Error::doing_it_wrong(
-            __METHOD__,
-            sprintf(
-                esc_html__(
-                    'This method is no longer in use.  There is no replacement for it. The method was used to generate a set of values for use in creating a messenger filter dropdown which is now generated differently via %s',
-                    'event_espresso'
-                ),
-                'Messages_Admin_Page::get_messengers_select_input()'
-            ),
-            '4.9.9.rc.014'
-        );
-
-        $m_values          = [];
-        $active_messengers = $this->getMsgModel()->get_all(['group_by' => 'MSG_messenger']);
-        // setup messengers for selects
-        $i = 1;
-        foreach ($active_messengers as $active_messenger) {
-            if ($active_messenger instanceof EE_Message) {
-                $m_values[ $i ]['id']   = $active_messenger->messenger();
-                $m_values[ $i ]['text'] = ucwords($active_messenger->messenger_label());
-                $i++;
-            }
-        }
-
-        return $m_values;
-    }
-
-
-    /**
-     * @return array
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     * @deprecated 4.9.9.rc.014
-     */
-    public function get_message_types_for_list_table()
-    {
-        EE_Error::doing_it_wrong(
-            __METHOD__,
-            sprintf(
-                esc_html__(
-                    'This method is no longer in use.  There is no replacement for it. The method was used to generate a set of values for use in creating a message type filter dropdown which is now generated differently via %s',
-                    'event_espresso'
-                ),
-                'Messages_Admin_Page::get_message_types_select_input()'
-            ),
-            '4.9.9.rc.014'
-        );
-
-        $mt_values       = [];
-        $active_messages = $this->getMsgModel()->get_all(['group_by' => 'MSG_message_type']);
-        $i               = 1;
-        foreach ($active_messages as $active_message) {
-            if ($active_message instanceof EE_Message) {
-                $mt_values[ $i ]['id']   = $active_message->message_type();
-                $mt_values[ $i ]['text'] = ucwords($active_message->message_type_label());
-                $i++;
-            }
-        }
-
-        return $mt_values;
-    }
-
-
-    /**
-     * @return array
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     * @deprecated 4.9.9.rc.014
-     */
-    public function get_contexts_for_message_types_for_list_table()
-    {
-        EE_Error::doing_it_wrong(
-            __METHOD__,
-            sprintf(
-                esc_html__(
-                    'This method is no longer in use.  There is no replacement for it. The method was used to generate a set of values for use in creating a message type context filter dropdown which is now generated differently via %s',
-                    'event_espresso'
-                ),
-                'Messages_Admin_Page::get_contexts_for_message_types_select_input()'
-            ),
-            '4.9.9.rc.014'
-        );
-
-        $contexts                = [];
-        $active_message_contexts = $this->getMsgModel()->get_all(['group_by' => 'MSG_context']);
-        foreach ($active_message_contexts as $active_message) {
-            if ($active_message instanceof EE_Message) {
-                $message_type = $active_message->message_type_object();
-                if ($message_type instanceof EE_message_type) {
-                    $message_type_contexts = $message_type->get_contexts();
-                    foreach ($message_type_contexts as $context => $context_details) {
-                        $contexts[ $context ] = $context_details['label'];
-                    }
-                }
-            }
-        }
-
-        return $contexts;
-    }
-
-
-    /**
-     * Generate select input with provided messenger options array.
-     *
-     * @param array $messenger_options Array of messengers indexed by messenger slug and values are the messenger
-     *                                 labels.
-     * @return string
-     * @throws EE_Error
-     */
-    public function get_messengers_select_input($messenger_options)
-    {
-        // if empty or just one value then just return an empty string
-        if (
-            empty($messenger_options)
-            || ! is_array($messenger_options)
-            || count($messenger_options) === 1
-        ) {
-            return '';
-        }
-        // merge in default
-        $messenger_options = array_merge(
-            ['none_selected' => esc_html__('Show All Messengers', 'event_espresso')],
-            $messenger_options
-        );
-        $input             = new EE_Select_Input(
-            $messenger_options,
-            [
-                'html_name'  => 'ee_messenger_filter_by',
-                'html_id'    => 'ee_messenger_filter_by',
-                'html_class' => 'wide',
-                'default'    => $this->request->getRequestParam('ee_messenger_filter_by', 'none_selected', 'title'),
-            ]
-        );
-
-        return $input->get_html_for_input();
-    }
-
-
-    /**
-     * Generate select input with provided message type options array.
-     *
-     * @param array $message_type_options Array of message types indexed by message type slug, and values are the
-     *                                    message type labels
-     * @return string
-     * @throws EE_Error
-     */
-    public function get_message_types_select_input($message_type_options)
-    {
-        // if empty or count of options is 1 then just return an empty string
-        if (
-            empty($message_type_options)
-            || ! is_array($message_type_options)
-            || count($message_type_options) === 1
-        ) {
-            return '';
-        }
-        // merge in default
-        $message_type_options = array_merge(
-            ['none_selected' => esc_html__('Show All Message Types', 'event_espresso')],
-            $message_type_options
-        );
-        $input                = new EE_Select_Input(
-            $message_type_options,
-            [
-                'html_name'  => 'ee_message_type_filter_by',
-                'html_id'    => 'ee_message_type_filter_by',
-                'html_class' => 'wide',
-                'default'    => $this->request->getRequestParam('ee_message_type_filter_by', 'none_selected', 'title'),
-            ]
-        );
-
-        return $input->get_html_for_input();
-    }
-
-
-    /**
-     * Generate select input with provide message type contexts array.
-     *
-     * @param array $context_options Array of message type contexts indexed by context slug, and values are the
-     *                               context label.
-     * @return string
-     * @throws EE_Error
-     */
-    public function get_contexts_for_message_types_select_input($context_options)
-    {
-        // if empty or count of options is one then just return empty string
-        if (
-            empty($context_options)
-            || ! is_array($context_options)
-            || count($context_options) === 1
-        ) {
-            return '';
-        }
-        // merge in default
-        $context_options = array_merge(
-            ['none_selected' => esc_html__('Show all Contexts', 'event_espresso')],
-            $context_options
-        );
-        $input           = new EE_Select_Input(
-            $context_options,
-            [
-                'html_name'  => 'ee_context_filter_by',
-                'html_id'    => 'ee_context_filter_by',
-                'html_class' => 'wide',
-                'default'    => $this->request->getRequestParam('ee_context_filter_by', 'none_selected', 'title'),
-            ]
-        );
-
-        return $input->get_html_for_input();
-    }
-
-
-    protected function _ajax_hooks()
-    {
-        add_action('wp_ajax_activate_messenger', [$this, 'activate_messenger_toggle']);
-        add_action('wp_ajax_activate_mt', [$this, 'activate_mt_toggle']);
-        add_action('wp_ajax_ee_msgs_save_settings', [$this, 'save_settings']);
-        add_action('wp_ajax_ee_msgs_update_mt_form', [$this, 'update_mt_form']);
-        add_action('wp_ajax_switch_template_pack', [$this, 'switch_template_pack']);
-        add_action('wp_ajax_toggle_context_template', [$this, 'toggle_context_template']);
-    }
-
-
-    protected function _define_page_props()
-    {
-        $this->_admin_page_title = $this->page_label;
-        $this->_labels           = [
-            'buttons'    => [
-                'add'    => esc_html__('Add New Message Template', 'event_espresso'),
-                'edit'   => esc_html__('Edit Message Template', 'event_espresso'),
-                'delete' => esc_html__('Delete Message Template', 'event_espresso'),
-            ],
-            'publishbox' => esc_html__('Update Actions', 'event_espresso'),
-        ];
-    }
-
-
-    /**
-     *        an array for storing key => value pairs of request actions and their corresponding methods
-     *
-     * @access protected
-     * @return void
-     */
-    protected function _set_page_routes()
-    {
-        $GRP_ID = $this->request->getRequestParam('GRP_ID', 0, 'int');
-        $GRP_ID = $this->request->getRequestParam('id', $GRP_ID, 'int');
-        $MSG_ID = $this->request->getRequestParam('MSG_ID', 0, 'int');
-
-        $this->_page_routes = [
-            'default'                          => [
-                'func'       => '_message_queue_list_table',
-                'capability' => 'ee_read_global_messages',
-            ],
-            'global_mtps'                      => [
-                'func'       => '_ee_default_messages_overview_list_table',
-                'capability' => 'ee_read_global_messages',
-            ],
-            'custom_mtps'                      => [
-                'func'       => '_custom_mtps_preview',
-                'capability' => 'ee_read_messages',
-            ],
-            'add_new_message_template'         => [
-                'func'       => 'add_message_template',
-                'capability' => 'ee_edit_messages',
-                'noheader'   => true,
-            ],
-            'edit_message_template'            => [
-                'func'       => '_edit_message_template',
-                'capability' => 'ee_edit_message',
-                'obj_id'     => $GRP_ID,
-            ],
-            'preview_message'                  => [
-                'func'               => '_preview_message',
-                'capability'         => 'ee_read_message',
-                'obj_id'             => $GRP_ID,
-                'noheader'           => true,
-                'headers_sent_route' => 'display_preview_message',
-            ],
-            'display_preview_message'          => [
-                'func'       => '_display_preview_message',
-                'capability' => 'ee_read_message',
-                'obj_id'     => $GRP_ID,
-            ],
-            'insert_message_template'          => [
-                'func'       => '_insert_or_update_message_template',
-                'capability' => 'ee_edit_messages',
-                'args'       => ['new' => true],
-                'noheader'   => true,
-            ],
-            'update_message_template'          => [
-                'func'       => '_insert_or_update_message_template',
-                'capability' => 'ee_edit_message',
-                'obj_id'     => $GRP_ID,
-                'args'       => ['new' => false],
-                'noheader'   => true,
-            ],
-            'trash_message_template'           => [
-                'func'       => '_trash_or_restore_message_template',
-                'capability' => 'ee_delete_message',
-                'obj_id'     => $GRP_ID,
-                'args'       => ['trash' => true, 'all' => true],
-                'noheader'   => true,
-            ],
-            'trash_message_template_context'   => [
-                'func'       => '_trash_or_restore_message_template',
-                'capability' => 'ee_delete_message',
-                'obj_id'     => $GRP_ID,
-                'args'       => ['trash' => true],
-                'noheader'   => true,
-            ],
-            'restore_message_template'         => [
-                'func'       => '_trash_or_restore_message_template',
-                'capability' => 'ee_delete_message',
-                'obj_id'     => $GRP_ID,
-                'args'       => ['trash' => false, 'all' => true],
-                'noheader'   => true,
-            ],
-            'restore_message_template_context' => [
-                'func'       => '_trash_or_restore_message_template',
-                'capability' => 'ee_delete_message',
-                'obj_id'     => $GRP_ID,
-                'args'       => ['trash' => false],
-                'noheader'   => true,
-            ],
-            'delete_message_template'          => [
-                'func'       => '_delete_message_template',
-                'capability' => 'ee_delete_message',
-                'obj_id'     => $GRP_ID,
-                'noheader'   => true,
-            ],
-            'reset_to_default'                 => [
-                'func'       => '_reset_to_default_template',
-                'capability' => 'ee_edit_message',
-                'obj_id'     => $GRP_ID,
-                'noheader'   => true,
-            ],
-            'settings'                         => [
-                'func'       => '_settings',
-                'capability' => 'manage_options',
-            ],
-            'update_global_settings'           => [
-                'func'       => '_update_global_settings',
-                'capability' => 'manage_options',
-                'noheader'   => true,
-            ],
-            'generate_now'                     => [
-                'func'       => '_generate_now',
-                'capability' => 'ee_send_message',
-                'noheader'   => true,
-            ],
-            'generate_and_send_now'            => [
-                'func'       => '_generate_and_send_now',
-                'capability' => 'ee_send_message',
-                'noheader'   => true,
-            ],
-            'queue_for_resending'              => [
-                'func'       => '_queue_for_resending',
-                'capability' => 'ee_send_message',
-                'noheader'   => true,
-            ],
-            'send_now'                         => [
-                'func'       => '_send_now',
-                'capability' => 'ee_send_message',
-                'noheader'   => true,
-            ],
-            'delete_ee_message'                => [
-                'func'       => '_delete_ee_messages',
-                'capability' => 'ee_delete_messages',
-                'noheader'   => true,
-            ],
-            'delete_ee_messages'               => [
-                'func'       => '_delete_ee_messages',
-                'capability' => 'ee_delete_messages',
-                'noheader'   => true,
-                'obj_id'     => $MSG_ID,
-            ],
-        ];
-    }
-
-
-    protected function _set_page_config()
-    {
-        $this->_page_config = [
-            'default'                  => [
-                'nav'           => [
-                    'label' => esc_html__('Message Activity', 'event_espresso'),
-                    'icon' => 'dashicons-email',
-                    'order' => 10,
-                ],
-                'list_table'    => 'EE_Message_List_Table',
-                // 'qtips' => array( 'EE_Message_List_Table_Tips' ),
-                'require_nonce' => false,
-            ],
-            'global_mtps'              => [
-                'nav'           => [
-                    'label' => esc_html__('Default Message Templates', 'event_espresso'),
-                    'icon' => 'dashicons-layout',
-                    'order' => 20,
-                ],
-                'list_table'    => 'Messages_Template_List_Table',
-                'help_tabs'     => [
-                    'messages_overview_help_tab'                                => [
-                        'title'    => esc_html__('Messages Overview', 'event_espresso'),
-                        'filename' => 'messages_overview',
-                    ],
-                    'messages_overview_messages_table_column_headings_help_tab' => [
-                        'title'    => esc_html__('Messages Table Column Headings', 'event_espresso'),
-                        'filename' => 'messages_overview_table_column_headings',
-                    ],
-                    'messages_overview_messages_filters_help_tab'               => [
-                        'title'    => esc_html__('Message Filters', 'event_espresso'),
-                        'filename' => 'messages_overview_filters',
-                    ],
-                    'messages_overview_messages_views_help_tab'                 => [
-                        'title'    => esc_html__('Message Views', 'event_espresso'),
-                        'filename' => 'messages_overview_views',
-                    ],
-                    'message_overview_message_types_help_tab'                   => [
-                        'title'    => esc_html__('Message Types', 'event_espresso'),
-                        'filename' => 'messages_overview_types',
-                    ],
-                    'messages_overview_messengers_help_tab'                     => [
-                        'title'    => esc_html__('Messengers', 'event_espresso'),
-                        'filename' => 'messages_overview_messengers',
-                    ],
-                ],
-                'require_nonce' => false,
-            ],
-            'custom_mtps'              => [
-                'nav'           => [
-                    'label' => esc_html__('Custom Message Templates', 'event_espresso'),
-                    'icon' => 'dashicons-admin-customizer',
-                    'order' => 30,
-                ],
-                'help_tabs'     => [],
-                'require_nonce' => false,
-            ],
-            'add_new_message_template' => [
-                'nav'           => [
-                    'label'      => esc_html__('Add New Message Templates', 'event_espresso'),
-                    'icon' => 'dashicons-plus-alt',
-                    'order'      => 5,
-                    'persistent' => false,
-                ],
-                'require_nonce' => false,
-            ],
-            'edit_message_template'    => [
-                'labels'        => [
-                    'buttons'    => [
-                        'reset' => esc_html__('Reset Templates', 'event_espresso'),
-                    ],
-                    'publishbox' => esc_html__('Update Actions', 'event_espresso'),
-                ],
-                'nav'           => [
-                    'label'      => esc_html__('Edit Message Templates', 'event_espresso'),
-                    'icon' => 'dashicons-edit-large',
-                    'order'      => 5,
-                    'persistent' => false,
-                    'url'        => '',
-                ],
-                'metaboxes'     => ['_publish_post_box', '_register_edit_meta_boxes'],
-                'has_metaboxes' => true,
-                'help_tabs'     => [
-                    'edit_message_template'            => [
-                        'title'    => esc_html__('Message Template Editor', 'event_espresso'),
-                        'callback' => 'edit_message_template_help_tab',
-                    ],
-                    'message_templates_help_tab'       => [
-                        'title'    => esc_html__('Message Templates', 'event_espresso'),
-                        'filename' => 'messages_templates',
-                    ],
-                    'message_template_shortcodes'      => [
-                        'title'    => esc_html__('Message Shortcodes', 'event_espresso'),
-                        'callback' => 'message_template_shortcodes_help_tab',
-                    ],
-                    'message_preview_help_tab'         => [
-                        'title'    => esc_html__('Message Preview', 'event_espresso'),
-                        'filename' => 'messages_preview',
-                    ],
-                    'messages_overview_other_help_tab' => [
-                        'title'    => esc_html__('Messages Other', 'event_espresso'),
-                        'filename' => 'messages_overview_other',
-                    ],
-                ],
-                'require_nonce' => false,
-            ],
-            'display_preview_message'  => [
-                'nav'           => [
-                    'label'      => esc_html__('Message Preview', 'event_espresso'),
-                    'icon' => 'dashicons-visibility-bar',
-                    'order'      => 5,
-                    'url'        => '',
-                    'persistent' => false,
-                ],
-                'help_tabs'     => [
-                    'preview_message' => [
-                        'title'    => esc_html__('About Previews', 'event_espresso'),
-                        'callback' => 'preview_message_help_tab',
-                    ],
-                ],
-                'require_nonce' => false,
-            ],
-            'settings'                 => [
-                'nav'           => [
-                    'label' => esc_html__('Settings', 'event_espresso'),
-                    'icon' => 'dashicons-admin-generic',
-                    'order' => 40,
-                ],
-                'metaboxes'     => ['_messages_settings_metaboxes'],
-                'help_tabs'     => [
-                    'messages_settings_help_tab'               => [
-                        'title'    => esc_html__('Messages Settings', 'event_espresso'),
-                        'filename' => 'messages_settings',
-                    ],
-                    'messages_settings_message_types_help_tab' => [
-                        'title'    => esc_html__('Activating / Deactivating Message Types', 'event_espresso'),
-                        'filename' => 'messages_settings_message_types',
-                    ],
-                    'messages_settings_messengers_help_tab'    => [
-                        'title'    => esc_html__('Activating / Deactivating Messengers', 'event_espresso'),
-                        'filename' => 'messages_settings_messengers',
-                    ],
-                ],
-                'require_nonce' => false,
-            ],
-        ];
-    }
-
-
-    protected function _add_screen_options()
-    {
-        // todo
-    }
-
-
-    protected function _add_screen_options_global_mtps()
-    {
-        /**
-         * Note: the reason for the value swap here on $this->_admin_page_title is because $this->_per_page_screen_options
-         * uses the $_admin_page_title property and we want different outputs in the different spots.
-         */
-        $page_title              = $this->_admin_page_title;
-        $this->_admin_page_title = esc_html__('Global Message Templates', 'event_espresso');
-        $this->_per_page_screen_option();
-        $this->_admin_page_title = $page_title;
-    }
-
-
-    protected function _add_screen_options_default()
-    {
-        $this->_admin_page_title = esc_html__('Message Activity', 'event_espresso');
-        $this->_per_page_screen_option();
-    }
-
-
-    // none of the below group are currently used for Messages
-    protected function _add_feature_pointers()
-    {
-    }
-
-
-    public function admin_init()
-    {
-    }
-
-
-    public function admin_notices()
-    {
-    }
-
-
-    public function admin_footer_scripts()
-    {
-    }
-
-
-    public function messages_help_tab()
-    {
-        EEH_Template::display_template(EE_MSG_TEMPLATE_PATH . 'ee_msg_messages_help_tab.template.php');
-    }
-
-
-    public function messengers_help_tab()
-    {
-        EEH_Template::display_template(EE_MSG_TEMPLATE_PATH . 'ee_msg_messenger_help_tab.template.php');
-    }
-
-
-    public function message_types_help_tab()
-    {
-        EEH_Template::display_template(EE_MSG_TEMPLATE_PATH . 'ee_msg_message_type_help_tab.template.php');
-    }
-
-
-    public function messages_overview_help_tab()
-    {
-        EEH_Template::display_template(EE_MSG_TEMPLATE_PATH . 'ee_msg_overview_help_tab.template.php');
-    }
-
-
-    public function message_templates_help_tab()
-    {
-        EEH_Template::display_template(EE_MSG_TEMPLATE_PATH . 'ee_msg_message_templates_help_tab.template.php');
-    }
-
-
-    public function edit_message_template_help_tab()
-    {
-        $args['img1'] = '<img src="' . EE_MSG_ASSETS_URL . 'images/editor.png' . '" alt="'
-                        . esc_attr__('Editor Title', 'event_espresso')
-                        . '" />';
-        $args['img2'] = '<img src="' . EE_MSG_ASSETS_URL . 'images/switch-context.png' . '" alt="'
-                        . esc_attr__('Context Switcher and Preview', 'event_espresso')
-                        . '" />';
-        $args['img3'] = '<img class="left" src="' . EE_MSG_ASSETS_URL . 'images/form-fields.png' . '" alt="'
-                        . esc_attr__('Message Template Form Fields', 'event_espresso')
-                        . '" />';
-        $args['img4'] = '<img class="right" src="' . EE_MSG_ASSETS_URL . 'images/shortcodes-metabox.png' . '" alt="'
-                        . esc_attr__('Shortcodes Metabox', 'event_espresso')
-                        . '" />';
-        $args['img5'] = '<img class="right" src="' . EE_MSG_ASSETS_URL . 'images/publish-meta-box.png' . '" alt="'
-                        . esc_attr__('Publish Metabox', 'event_espresso')
-                        . '" />';
-        EEH_Template::display_template(
-            EE_MSG_TEMPLATE_PATH . 'ee_msg_messages_templates_editor_help_tab.template.php',
-            $args
-        );
-    }
-
-
-    /**
-     * @throws ReflectionException
-     * @throws EE_Error
-     */
-    public function message_template_shortcodes_help_tab()
-    {
-        $this->_set_shortcodes();
-        $args['shortcodes'] = $this->_shortcodes;
-        EEH_Template::display_template(
-            EE_MSG_TEMPLATE_PATH . 'ee_msg_messages_shortcodes_help_tab.template.php',
-            $args
-        );
-    }
-
-
-    public function preview_message_help_tab()
-    {
-        EEH_Template::display_template(EE_MSG_TEMPLATE_PATH . 'ee_msg_preview_help_tab.template.php');
-    }
-
-
-    public function settings_help_tab()
-    {
-        $args['img1'] = '<img class="inline-text" src="' . EE_MSG_ASSETS_URL . 'images/email-tab-active.png'
-                        . '" alt="' . esc_attr__('Active Email Tab', 'event_espresso') . '" />';
-        $args['img2'] = '<img class="inline-text" src="' . EE_MSG_ASSETS_URL . 'images/email-tab-inactive.png'
-                        . '" alt="' . esc_attr__('Inactive Email Tab', 'event_espresso') . '" />';
-        $args['img3'] = '<div class="ee-switch">'
-                        . '<input class="ee-switch__input" id="ee-on-off-toggle-on" type="checkbox" checked>'
-                        . '<label class="ee-switch__toggle" for="ee-on-off-toggle-on"></label>'
-                        . '</div>';
-        $args['img4'] = '<div class="switch">'
-                        . '<input class="ee-switch__input" id="ee-on-off-toggle-off" type="checkbox">'
-                        . '<label class="ee-switch__toggle" for="ee-on-off-toggle-off"></label>'
-                        . '</div>';
-        EEH_Template::display_template(EE_MSG_TEMPLATE_PATH . 'ee_msg_messages_settings_help_tab.template.php', $args);
-    }
-
-
-    public function load_scripts_styles()
-    {
-        wp_register_style('espresso_ee_msg', EE_MSG_ASSETS_URL . 'ee_message_admin.css', EVENT_ESPRESSO_VERSION);
-        wp_enqueue_style('espresso_ee_msg');
-
-        wp_register_script(
-            'ee-messages-settings',
-            EE_MSG_ASSETS_URL . 'ee-messages-settings.js',
-            ['jquery-ui-droppable', 'ee-serialize-full-array'],
-            EVENT_ESPRESSO_VERSION,
-            true
-        );
-        wp_register_script(
-            'ee-msg-list-table-js',
-            EE_MSG_ASSETS_URL . 'ee_message_admin_list_table.js',
-            ['ee-dialog'],
-            EVENT_ESPRESSO_VERSION
-        );
-    }
-
-
-    public function load_scripts_styles_default()
-    {
-        wp_enqueue_script('ee-msg-list-table-js');
-    }
-
-
-    public function wp_editor_css($mce_css)
-    {
-        // if we're on the edit_message_template route
-        if ($this->_req_action === 'edit_message_template' && $this->_active_messenger instanceof EE_messenger) {
-            $message_type_name = $this->_active_message_type_name;
-
-            // we're going to REPLACE the existing mce css
-            // we need to get the css file location from the active messenger
-            $mce_css = $this->_active_messenger->get_variation(
-                $this->_template_pack,
-                $message_type_name,
-                true,
-                'wpeditor',
-                $this->_variation
-            );
-        }
-
-        return $mce_css;
-    }
-
-
-    /**
-     * @throws EE_Error
-     * @throws ReflectionException
-     */
-    public function load_scripts_styles_edit_message_template()
-    {
-
-        $this->_set_shortcodes();
-
-        EE_Registry::$i18n_js_strings['confirm_default_reset']        = sprintf(
-            esc_html__(
-                'Are you sure you want to reset the %s %s message templates?  Remember continuing will reset the templates for all contexts in this messenger and message type group.',
-                'event_espresso'
-            ),
-            $this->_message_template_group->messenger_obj()->label['singular'],
-            $this->_message_template_group->message_type_obj()->label['singular']
-        );
-        EE_Registry::$i18n_js_strings['confirm_switch_template_pack'] = esc_html__(
-            'Switching the template pack for a messages template will reset the content for the template so the new layout is loaded.  Any custom content in the existing template will be lost. Are you sure you wish to do this?',
-            'event_espresso'
-        );
-        EE_Registry::$i18n_js_strings['server_error']                 = esc_html__(
-            'An unknown error occurred on the server while attempting to process your request. Please refresh the page and try again or contact support.',
-            'event_espresso'
-        );
-
-        wp_register_script(
-            'ee_msgs_edit_js',
-            EE_MSG_ASSETS_URL . 'ee_message_editor.js',
-            ['jquery'],
-            EVENT_ESPRESSO_VERSION
-        );
-
-        wp_enqueue_script('ee_admin_js');
-        wp_enqueue_script('ee_msgs_edit_js');
-
-        // add in special css for tiny_mce
-        add_filter('mce_css', [$this, 'wp_editor_css']);
-    }
-
-
-    /**
-     * @throws EE_Error
-     * @throws ReflectionException
-     */
-    public function load_scripts_styles_display_preview_message()
-    {
-        $this->_set_message_template_group();
-        if ($this->_active_messenger_name) {
-            $this->_active_messenger = $this->_message_resource_manager->get_active_messenger(
-                $this->_active_messenger_name
-            );
-        }
-
-        wp_enqueue_style(
-            'espresso_preview_css',
-            $this->_active_messenger->get_variation(
-                $this->_template_pack,
-                $this->_active_message_type_name,
-                true,
-                'preview',
-                $this->_variation
-            )
-        );
-    }
-
-
-    public function load_scripts_styles_settings()
-    {
-        wp_register_style(
-            'ee-message-settings',
-            EE_MSG_ASSETS_URL . 'ee_message_settings.css',
-            [],
-            EVENT_ESPRESSO_VERSION
-        );
-        wp_enqueue_style('ee-text-links');
-        wp_enqueue_style('ee-message-settings');
-        wp_enqueue_script('ee-messages-settings');
-    }
-
-
-    /**
-     * set views array for List Table
-     */
-    public function _set_list_table_views_global_mtps()
-    {
-        $this->_views = [
-            'in_use' => [
-                'slug'  => 'in_use',
-                'label' => esc_html__('In Use', 'event_espresso'),
-                'count' => 0,
-            ],
-        ];
-    }
-
-
-    /**
-     * Set views array for the Custom Template List Table
-     */
-    public function _set_list_table_views_custom_mtps()
-    {
-        $this->_set_list_table_views_global_mtps();
-        $this->_views['in_use']['bulk_action'] = [
-            'trash_message_template' => esc_html__('Move to Trash', 'event_espresso'),
-        ];
-    }
-
-
-    /**
-     * set views array for message queue list table
-     *
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     * @throws InvalidArgumentException
-     * @throws EE_Error
-     * @throws ReflectionException
-     */
-    public function _set_list_table_views_default()
-    {
-        EE_Registry::instance()->load_helper('Template');
-
-        $common_bulk_actions = EE_Registry::instance()->CAP->current_user_can(
-            'ee_send_message',
-            'message_list_table_bulk_actions'
-        )
-            ? [
-                'generate_now'          => esc_html__('Generate Now', 'event_espresso'),
-                'generate_and_send_now' => esc_html__('Generate and Send Now', 'event_espresso'),
-                'queue_for_resending'   => esc_html__('Queue for Resending', 'event_espresso'),
-                'send_now'              => esc_html__('Send Now', 'event_espresso'),
-            ]
-            : [];
-
-        $delete_bulk_action = EE_Registry::instance()->CAP->current_user_can(
-            'ee_delete_messages',
-            'message_list_table_bulk_actions'
-        )
-            ? ['delete_ee_messages' => esc_html__('Delete Messages', 'event_espresso')]
-            : [];
-
-
-        $this->_views = [
-            'all' => [
-                'slug'        => 'all',
-                'label'       => esc_html__('All', 'event_espresso'),
-                'count'       => 0,
-                'bulk_action' => array_merge($common_bulk_actions, $delete_bulk_action),
-            ],
-        ];
-
-
-        foreach ($this->getMsgModel()->all_statuses() as $status) {
-            if ($status === EEM_Message::status_debug_only && ! EEM_Message::debug()) {
-                continue;
-            }
-            $status_bulk_actions = $common_bulk_actions;
-            // unset bulk actions not applying to status
-            if (! empty($status_bulk_actions)) {
-                switch ($status) {
-                    case EEM_Message::status_idle:
-                    case EEM_Message::status_resend:
-                        $status_bulk_actions['send_now'] = $common_bulk_actions['send_now'];
-                        break;
-
-                    case EEM_Message::status_failed:
-                    case EEM_Message::status_debug_only:
-                    case EEM_Message::status_messenger_executing:
-                        $status_bulk_actions = [];
-                        break;
-
-                    case EEM_Message::status_incomplete:
-                        unset($status_bulk_actions['queue_for_resending'], $status_bulk_actions['send_now']);
-                        break;
-
-                    case EEM_Message::status_retry:
-                    case EEM_Message::status_sent:
-                        unset($status_bulk_actions['generate_now'], $status_bulk_actions['generate_and_send_now']);
-                        break;
-                }
-            }
-
-            // skip adding messenger executing status to views because it will be included with the Failed view.
-            if ($status === EEM_Message::status_messenger_executing) {
-                continue;
-            }
-
-            $this->_views[ strtolower($status) ] = [
-                'slug'        => strtolower($status),
-                'label'       => EEH_Template::pretty_status($status, false, 'sentence'),
-                'count'       => 0,
-                'bulk_action' => array_merge($status_bulk_actions, $delete_bulk_action),
-            ];
-        }
-    }
-
-
-    /**
-     * @throws EE_Error
-     */
-    protected function _ee_default_messages_overview_list_table()
-    {
-        $this->_admin_page_title = esc_html__('Default Message Templates', 'event_espresso');
-        $this->display_admin_list_table_page_with_no_sidebar();
-    }
-
-
-    /**
-     * @throws EE_Error
-     * @throws ReflectionException
-     */
-    protected function _message_queue_list_table()
-    {
-        $this->_search_btn_label                   = esc_html__('Message Activity', 'event_espresso');
-        $this->_template_args['per_column']        = 6;
-        $this->_template_args['after_list_table']  = $this->_display_legend($this->_message_legend_items());
-        $message_results = trim(EEM_Message::instance()->get_pretty_label_for_results());
-        $this->_template_args['before_list_table'] = ! empty($message_results) ? "<h3>{$message_results}</h3>" : '';
-        $this->display_admin_list_table_page_with_no_sidebar();
-    }
-
-
-    /**
-     * @throws EE_Error
-     */
-    protected function _message_legend_items()
-    {
-
-        $action_css_classes = EEH_MSG_Template::get_message_action_icons();
-        $action_items       = [];
-
-        foreach ($action_css_classes as $action_item => $action_details) {
-            if ($action_item === 'see_notifications_for') {
-                continue;
-            }
-            $action_items[ $action_item ] = [
-                'class' => $action_details['css_class'],
-                'desc'  => $action_details['label'],
-            ];
-        }
-
-        /** @var array $status_items status legend setup */
-        $status_items = [
-            'sent_status'                => [
-                'class' => 'ee-status-legend ee-status-bg--' . EEM_Message::status_sent,
-                'desc'  => EEH_Template::pretty_status(EEM_Message::status_sent, false, 'sentence'),
-            ],
-            'idle_status'                => [
-                'class' => 'ee-status-legend ee-status-bg--' . EEM_Message::status_idle,
-                'desc'  => EEH_Template::pretty_status(EEM_Message::status_idle, false, 'sentence'),
-            ],
-            'failed_status'              => [
-                'class' => 'ee-status-legend ee-status-bg--' . EEM_Message::status_failed,
-                'desc'  => EEH_Template::pretty_status(EEM_Message::status_failed, false, 'sentence'),
-            ],
-            'messenger_executing_status' => [
-                'class' => 'ee-status-legend ee-status-bg--' . EEM_Message::status_messenger_executing,
-                'desc'  => EEH_Template::pretty_status(EEM_Message::status_messenger_executing, false, 'sentence'),
-            ],
-            'resend_status'              => [
-                'class' => 'ee-status-legend ee-status-bg--' . EEM_Message::status_resend,
-                'desc'  => EEH_Template::pretty_status(EEM_Message::status_resend, false, 'sentence'),
-            ],
-            'incomplete_status'          => [
-                'class' => 'ee-status-legend ee-status-bg--' . EEM_Message::status_incomplete,
-                'desc'  => EEH_Template::pretty_status(EEM_Message::status_incomplete, false, 'sentence'),
-            ],
-            'retry_status'               => [
-                'class' => 'ee-status-legend ee-status-bg--' . EEM_Message::status_retry,
-                'desc'  => EEH_Template::pretty_status(EEM_Message::status_retry, false, 'sentence'),
-            ],
-        ];
-        if (EEM_Message::debug()) {
-            $status_items['debug_only_status'] = [
-                'class' => 'ee-status-legend ee-status-bg--' . EEM_Message::status_debug_only,
-                'desc'  => EEH_Template::pretty_status(EEM_Message::status_debug_only, false, 'sentence'),
-            ];
-        }
-
-        return array_merge($action_items, $status_items);
-    }
-
-
-    /**
-     * @throws EE_Error
-     */
-    protected function _custom_mtps_preview()
-    {
-        $this->_admin_page_title              = esc_html__('Custom Message Templates (Preview)', 'event_espresso');
-        $this->_template_args['preview_img']  = '<img src="' . EE_MSG_ASSETS_URL . 'images/custom_mtps_preview.png"'
-                                                . ' alt="' . esc_attr__(
-                                                    'Preview Custom Message Templates screenshot',
-                                                    'event_espresso'
-                                                ) . '" />';
-        $this->_template_args['preview_text'] = '<strong>'
-                                                . esc_html__(
-                                                    'Custom Message Templates is a feature that is only available in the premium version of Event Espresso 4 which is available with a support license purchase on EventEspresso.com. With the Custom Message Templates feature, you are able to create custom message templates and assign them on a per-event basis.',
-                                                    'event_espresso'
-                                                )
-                                                . '</strong>';
-
-        $this->display_admin_caf_preview_page('custom_message_types', false);
-    }
-
-
-    /**
-     * get_message_templates
-     * This gets all the message templates for listing on the overview list.
-     *
-     * @access public
-     * @param int    $per_page the amount of templates groups to show per page
-     * @param string $type     the current _view we're getting templates for
-     * @param bool   $count    return count?
-     * @param bool   $all      disregard any paging info (get all data);
-     * @param bool   $global   whether to return just global (true) or custom templates (false)
-     * @return array
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     */
-    public function get_message_templates(
-        $per_page = 10,
-        $type = 'in_use',
-        $count = false,
-        $all = false,
-        $global = true
-    ) {
-        $orderby = $this->request->getRequestParam('orderby', 'GRP_ID');
-        $this->request->setRequestParam('orderby', $orderby);
-
-        $order        = $this->request->getRequestParam('order', 'ASC');
-        $current_page = $this->request->getRequestParam('paged', 1, 'int');
-        $per_page     = $this->request->getRequestParam('perpage', $per_page, 'int');
-
-        $offset = ($current_page - 1) * $per_page;
-        $limit  = $all ? null : [$offset, $per_page];
-
-        // options will match what is in the _views array property
-        return $type === 'in_use'
-            ? $this->getMtgModel()->get_all_active_message_templates(
-                $orderby,
-                $order,
-                $limit,
-                $count,
-                $global,
-                true
-            )
-            : $this->getMtgModel()->get_all_trashed_grouped_message_templates(
-                $orderby,
-                $order,
-                $limit,
-                $count,
-                $global
-            );
-    }
-
-
-    /**
-     * filters etc might need a list of installed message_types
-     *
-     * @return array an array of message type objects
-     */
-    public function get_installed_message_types()
-    {
-        $installed_message_types = $this->_message_resource_manager->installed_message_types();
-        $installed               = [];
-
-        foreach ($installed_message_types as $message_type) {
-            $installed[ $message_type->name ] = $message_type;
-        }
-
-        return $installed;
-    }
-
-
-    /**
-     * This is used when creating a custom template. All Custom Templates start based off another template.
-     *
-     * @param string $message_type
-     * @param string $messenger
-     * @param string $GRP_ID
-     *
-     * @throws EE_error
-     * @throws ReflectionException
-     */
-    public function add_message_template($message_type = '', $messenger = '', $GRP_ID = '')
-    {
-        // set values override any request data
-        $message_type = ! empty($message_type) ? $message_type : $this->_active_message_type_name;
-        $messenger    = ! empty($messenger) ? $messenger : $this->_active_messenger_name;
-        $GRP_ID       = ! empty($GRP_ID) ? $GRP_ID : $this->request->getRequestParam('GRP_ID', 0, 'int');
-
-        // we need messenger and message type.  They should be coming from the event editor. If not here then return error
-        if (empty($message_type) || empty($messenger)) {
-            throw new EE_Error(
-                esc_html__(
-                    'Sorry, but we can\'t create new templates because we\'re missing the messenger or message type',
-                    'event_espresso'
-                )
-            );
-        }
-
-        // we need the GRP_ID for the template being used as the base for the new template
-        if (empty($GRP_ID)) {
-            throw new EE_Error(
-                esc_html__(
-                    'In order to create a custom message template the GRP_ID of the template being used as a base is needed',
-                    'event_espresso'
-                )
-            );
-        }
-
-        // let's just make sure the template gets generated!
-
-        // we need to reassign some variables for what the insert is expecting
-        $this->request->setRequestParam('MTP_messenger', $messenger);
-        $this->request->setRequestParam('MTP_message_type', $message_type);
-        $this->request->setRequestParam('GRP_ID', $GRP_ID);
-
-        $this->_insert_or_update_message_template(true);
-    }
-
-
-    /**
-     * @param string $message_type     message type slug
-     * @param string $messenger        messenger slug
-     * @param int    $GRP_ID           GRP_ID for the related message template group this new template will be based
-     *                                 off of.
-     * @throws EE_error
-     * @throws ReflectionException
-     * @deprecated 4.10.29.p
-     */
-    protected function _add_message_template($message_type, $messenger, $GRP_ID)
-    {
-        $this->add_message_template($message_type, $messenger, $GRP_ID);
-    }
-
-
-    /**
-     * _edit_message_template
-     *
-     * @access protected
-     * @return void
-     * @throws InvalidIdentifierException
-     * @throws DomainException
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws ReflectionException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     */
-    protected function _edit_message_template()
-    {
-        do_action('AHEE_log', __FILE__, __FUNCTION__, '');
-        $template_fields = '';
-        $sidebar_fields  = '';
-        // we filter the tinyMCE settings to remove the validation since message templates by their nature will not have
-        // valid html in the templates.
-        add_filter('tiny_mce_before_init', [$this, 'filter_tinymce_init'], 10, 2);
-
-        $GRP_ID = $this->request->getRequestParam('id', 0, 'int');
-        $EVT_ID = $this->request->getRequestParam('evt_id', 0, 'int');
-
-        $this->_set_shortcodes(); // this also sets the _message_template property.
-        $message_template_group = $this->_message_template_group;
-        $c_label                = $message_template_group->context_label();
-        $c_config               = $message_template_group->contexts_config();
-
-        reset($c_config);
-        $context = $this->request->getRequestParam('context', key($c_config));
-        $context = strtolower($context);
-
-        $action = empty($GRP_ID) ? 'insert_message_template' : 'update_message_template';
-
-        $edit_message_template_form_url = add_query_arg(
-            ['action' => $action, 'noheader' => true],
-            EE_MSG_ADMIN_URL
-        );
-
-        // set active messenger for this view
-        $this->_active_messenger         = $this->_message_resource_manager->get_active_messenger(
-            $message_template_group->messenger()
-        );
-        $this->_active_message_type_name = $message_template_group->message_type();
-
-
-        // Do we have any validation errors?
-        $validators = $this->_get_transient();
-        $v_fields   = ! empty($validators) ? array_keys($validators) : [];
-
-
-        // we need to assemble the title from Various details
-        $context_label = sprintf(
-            esc_html__('(%s %s)', 'event_espresso'),
-            $c_config[ $context ]['label'],
-            ucwords($c_label['label'])
-        );
-
-        $title = sprintf(
-            esc_html__(' %s %s Template %s', 'event_espresso'),
-            ucwords($message_template_group->messenger_obj()->label['singular']),
-            ucwords($message_template_group->message_type_obj()->label['singular']),
-            $context_label
-        );
-
-        $this->_template_args['GRP_ID']           = $GRP_ID;
-        $this->_template_args['message_template'] = $message_template_group;
-        $this->_template_args['is_extra_fields']  = false;
-
-
-        // let's get EEH_MSG_Template so we can get template form fields
-        $template_field_structure = EEH_MSG_Template::get_fields(
-            $message_template_group->messenger(),
-            $message_template_group->message_type(),
-            $context
-        );
-
-        if (! $template_field_structure) {
-            $template_field_structure = false;
-            $template_fields          = esc_html__(
-                'There was an error in assembling the fields for this display (you should see an error message)',
-                'event_espresso'
-            );
-        }
-
-
-        $message_templates = $message_template_group->context_templates();
-
-
-        // if we have the extra key.. then we need to remove the content index from the template_field_structure as it
-        // will get handled in the "extra" array.
-        if (is_array($template_field_structure[ $context ]) && isset($template_field_structure[ $context ]['extra'])) {
-            foreach ($template_field_structure[ $context ]['extra'] as $reference_field => $new_fields) {
-                unset($template_field_structure[ $context ][ $reference_field ]);
-            }
-        }
-
-        // let's loop through the template_field_structure and actually assemble the input fields!
-        if (! empty($template_field_structure)) {
-            foreach ($template_field_structure[ $context ] as $template_field => $field_setup_array) {
-                // if this is an 'extra' template field then we need to remove any existing fields that are keyed up in
-                // the extra array and reset them.
-                if ($template_field === 'extra') {
-                    $this->_template_args['is_extra_fields'] = true;
-                    foreach ($field_setup_array as $reference_field => $new_fields_array) {
-                        $message_template = $message_templates[ $context ][ $reference_field ];
-                        $content          = $message_template instanceof EE_Message_Template
-                            ? $message_template->get('MTP_content')
-                            : '';
-                        foreach ($new_fields_array as $extra_field => $extra_array) {
-                            // let's verify if we need this extra field via the shortcodes parameter.
-                            $continue = false;
-                            if (isset($extra_array['shortcodes_required'])) {
-                                foreach ((array) $extra_array['shortcodes_required'] as $shortcode) {
-                                    if (! array_key_exists($shortcode, $this->_shortcodes)) {
-                                        $continue = true;
-                                    }
-                                }
-                                if ($continue) {
-                                    continue;
-                                }
-                            }
-
-                            $field_id = $reference_field . '-' . $extra_field . '-content';
-
-                            $template_form_fields[ $field_id ]         = $extra_array;
-                            $template_form_fields[ $field_id ]['name'] = 'MTP_template_fields['
-                                                                         . $reference_field
-                                                                         . '][content]['
-                                                                         . $extra_field . ']';
-                            $css_class                                 = $extra_array['css_class'] ?? '';
-
-                            $template_form_fields[ $field_id ]['css_class'] = ! empty($v_fields)
-                                                                              && in_array($extra_field, $v_fields, true)
-                                                                              && (
-                                                                                  is_array($validators[ $extra_field ])
-                                                                                  && isset($validators[ $extra_field ]['msg'])
-                                                                              )
-                                ? 'validate-error ' . $css_class
-                                : $css_class;
-
-                            $template_form_fields[ $field_id ]['value'] = ! empty($message_templates)
-                                                                          && isset($content[ $extra_field ])
-                                ? $content[ $extra_field ]
-                                : '';
-
-                            // do we have a validation error?  if we do then let's use that value instead
-                            $template_form_fields[ $field_id ]['value'] = isset($validators[ $extra_field ])
-                                ? $validators[ $extra_field ]['value']
-                                : $template_form_fields[ $field_id ]['value'];
-
-
-                            $template_form_fields[ $field_id ]['db-col'] = 'MTP_content';
-
-                            // shortcode selector
-                            $field_name_to_use                                   = $extra_field === 'main'
-                                ? 'content'
-                                : $extra_field;
-                            $template_form_fields[ $field_id ]['append_content'] = $this->_get_shortcode_selector(
-                                $field_name_to_use,
-                                $field_id
-                            );
-                        }
-                        $template_field_MTP_id           = $reference_field . '-MTP_ID';
-                        $template_field_template_name_id = $reference_field . '-name';
-
-                        $template_form_fields[ $template_field_MTP_id ] = [
-                            'name'       => 'MTP_template_fields[' . $reference_field . '][MTP_ID]',
-                            'label'      => null,
-                            'input'      => 'hidden',
-                            'type'       => 'int',
-                            'required'   => false,
-                            'validation' => false,
-                            'value'      => ! empty($message_templates) ? $message_template->ID() : '',
-                            'css_class'  => '',
-                            'format'     => '%d',
-                            'db-col'     => 'MTP_ID',
-                        ];
-
-                        $template_form_fields[ $template_field_template_name_id ] = [
-                            'name'       => 'MTP_template_fields[' . $reference_field . '][name]',
-                            'label'      => null,
-                            'input'      => 'hidden',
-                            'type'       => 'string',
-                            'required'   => false,
-                            'validation' => true,
-                            'value'      => $reference_field,
-                            'css_class'  => '',
-                            'format'     => '%s',
-                            'db-col'     => 'MTP_template_field',
-                        ];
-                    }
-                    continue; // skip the next stuff, we got the necessary fields here for this dataset.
-                } else {
-                    $field_id                                   = $template_field . '-content';
-                    $template_form_fields[ $field_id ]          = $field_setup_array;
-                    $template_form_fields[ $field_id ]['name']  =
-                        'MTP_template_fields[' . $template_field . '][content]';
-                    $message_template                           = $message_templates[ $context ][ $template_field ]
-                                                                  ?? null;
-                    $template_form_fields[ $field_id ]['value'] = ! empty($message_templates)
-                                                                  && is_array($message_templates[ $context ])
-                                                                  && $message_template instanceof EE_Message_Template
-                        ? $message_template->get('MTP_content')
-                        : '';
-
-                    // do we have a validator error for this field?  if we do then we'll use that value instead
-                    $template_form_fields[ $field_id ]['value'] = isset($validators[ $template_field ])
-                        ? $validators[ $template_field ]['value']
-                        : $template_form_fields[ $field_id ]['value'];
-
-
-                    $template_form_fields[ $field_id ]['db-col']    = 'MTP_content';
-                    $css_class                                      = $field_setup_array['css_class'] ?? '';
-                    $template_form_fields[ $field_id ]['css_class'] = ! empty($v_fields)
-                                                                      && in_array($template_field, $v_fields, true)
-                                                                      && isset($validators[ $template_field ]['msg'])
-                        ? 'validate-error ' . $css_class
-                        : $css_class;
-
-                    // shortcode selector
-                    $template_form_fields[ $field_id ]['append_content'] = $this->_get_shortcode_selector(
-                        $template_field,
-                        $field_id
-                    );
-                }
-
-                // k took care of content field(s) now let's take care of others.
-
-                $template_field_MTP_id                 = $template_field . '-MTP_ID';
-                $template_field_field_template_name_id = $template_field . '-name';
-
-                // foreach template field there are actually two form fields created
-                $template_form_fields[ $template_field_MTP_id ] = [
-                    'name'       => 'MTP_template_fields[' . $template_field . '][MTP_ID]',
-                    'label'      => null,
-                    'input'      => 'hidden',
-                    'type'       => 'int',
-                    'required'   => false,
-                    'validation' => true,
-                    'value'      => $message_template instanceof EE_Message_Template ? $message_template->ID() : '',
-                    'css_class'  => '',
-                    'format'     => '%d',
-                    'db-col'     => 'MTP_ID',
-                ];
-
-                $template_form_fields[ $template_field_field_template_name_id ] = [
-                    'name'       => 'MTP_template_fields[' . $template_field . '][name]',
-                    'label'      => null,
-                    'input'      => 'hidden',
-                    'type'       => 'string',
-                    'required'   => false,
-                    'validation' => true,
-                    'value'      => $template_field,
-                    'css_class'  => '',
-                    'format'     => '%s',
-                    'db-col'     => 'MTP_template_field',
-                ];
-            }
-
-            // add other fields
-            $template_form_fields['ee-msg-current-context'] = [
-                'name'       => 'MTP_context',
-                'label'      => null,
-                'input'      => 'hidden',
-                'type'       => 'string',
-                'required'   => false,
-                'validation' => true,
-                'value'      => $context,
-                'css_class'  => '',
-                'format'     => '%s',
-                'db-col'     => 'MTP_context',
-            ];
-
-            $template_form_fields['ee-msg-grp-id'] = [
-                'name'       => 'GRP_ID',
-                'label'      => null,
-                'input'      => 'hidden',
-                'type'       => 'int',
-                'required'   => false,
-                'validation' => true,
-                'value'      => $GRP_ID,
-                'css_class'  => '',
-                'format'     => '%d',
-                'db-col'     => 'GRP_ID',
-            ];
-
-            $template_form_fields['ee-msg-messenger'] = [
-                'name'       => 'MTP_messenger',
-                'label'      => null,
-                'input'      => 'hidden',
-                'type'       => 'string',
-                'required'   => false,
-                'validation' => true,
-                'value'      => $message_template_group->messenger(),
-                'css_class'  => '',
-                'format'     => '%s',
-                'db-col'     => 'MTP_messenger',
-            ];
-
-            $template_form_fields['ee-msg-message-type'] = [
-                'name'       => 'MTP_message_type',
-                'label'      => null,
-                'input'      => 'hidden',
-                'type'       => 'string',
-                'required'   => false,
-                'validation' => true,
-                'value'      => $message_template_group->message_type(),
-                'css_class'  => '',
-                'format'     => '%s',
-                'db-col'     => 'MTP_message_type',
-            ];
-
-            $sidebar_form_fields['ee-msg-is-global'] = [
-                'name'       => 'MTP_is_global',
-                'label'      => esc_html__('Global Template', 'event_espresso'),
-                'input'      => 'hidden',
-                'type'       => 'int',
-                'required'   => false,
-                'validation' => true,
-                'value'      => $message_template_group->get('MTP_is_global'),
-                'css_class'  => '',
-                'format'     => '%d',
-                'db-col'     => 'MTP_is_global',
-            ];
-
-            $sidebar_form_fields['ee-msg-is-override'] = [
-                'name'       => 'MTP_is_override',
-                'label'      => esc_html__('Override all custom', 'event_espresso'),
-                'input'      => $message_template_group->is_global() ? 'checkbox' : 'hidden',
-                'type'       => 'int',
-                'required'   => false,
-                'validation' => true,
-                'value'      => $message_template_group->get('MTP_is_override'),
-                'css_class'  => '',
-                'format'     => '%d',
-                'db-col'     => 'MTP_is_override',
-            ];
-
-            $sidebar_form_fields['ee-msg-is-active'] = [
-                'name'       => 'MTP_is_active',
-                'label'      => esc_html__('Active Template', 'event_espresso'),
-                'input'      => 'hidden',
-                'type'       => 'int',
-                'required'   => false,
-                'validation' => true,
-                'value'      => $message_template_group->is_active(),
-                'css_class'  => '',
-                'format'     => '%d',
-                'db-col'     => 'MTP_is_active',
-            ];
-
-            $sidebar_form_fields['ee-msg-deleted'] = [
-                'name'       => 'MTP_deleted',
-                'label'      => null,
-                'input'      => 'hidden',
-                'type'       => 'int',
-                'required'   => false,
-                'validation' => true,
-                'value'      => $message_template_group->get('MTP_deleted'),
-                'css_class'  => '',
-                'format'     => '%d',
-                'db-col'     => 'MTP_deleted',
-            ];
-            $sidebar_form_fields['ee-msg-author']  = [
-                'name'       => 'MTP_user_id',
-                'label'      => esc_html__('Author', 'event_espresso'),
-                'input'      => 'hidden',
-                'type'       => 'int',
-                'required'   => false,
-                'validation' => false,
-                'value'      => $message_template_group->user(),
-                'format'     => '%d',
-                'db-col'     => 'MTP_user_id',
-            ];
-
-            $sidebar_form_fields['ee-msg-route'] = [
-                'name'  => 'action',
-                'input' => 'hidden',
-                'type'  => 'string',
-                'value' => $action,
-            ];
-
-            $sidebar_form_fields['ee-msg-id']        = [
-                'name'  => 'id',
-                'input' => 'hidden',
-                'type'  => 'int',
-                'value' => $GRP_ID,
-            ];
-            $sidebar_form_fields['ee-msg-evt-nonce'] = [
-                'name'  => $action . '_nonce',
-                'input' => 'hidden',
-                'type'  => 'string',
-                'value' => wp_create_nonce($action . '_nonce'),
-            ];
-
-            $template_switch = $this->request->getRequestParam('template_switch');
-            if ($template_switch) {
-                $sidebar_form_fields['ee-msg-template-switch'] = [
-                    'name'  => 'template_switch',
-                    'input' => 'hidden',
-                    'type'  => 'int',
-                    'value' => 1,
-                ];
-            }
-
-
-            $template_fields = $this->_generate_admin_form_fields($template_form_fields);
-            $sidebar_fields  = $this->_generate_admin_form_fields($sidebar_form_fields);
-        } //end if ( !empty($template_field_structure) )
-
-        // set extra content for publish box
-        $this->_template_args['publish_box_extra_content'] = $sidebar_fields;
-        $this->_set_publish_post_box_vars(
-            'id',
-            $GRP_ID,
-            false,
-            add_query_arg(
-                ['action' => 'global_mtps'],
-                $this->_admin_base_url
-            )
-        );
-
-        // add preview button
-        $preview_url    = parent::add_query_args_and_nonce(
-            [
-                'message_type' => $message_template_group->message_type(),
-                'messenger'    => $message_template_group->messenger(),
-                'context'      => $context,
-                'GRP_ID'       => $GRP_ID,
-                'evt_id'       => $EVT_ID ?: false,
-                'action'       => 'preview_message',
-            ],
-            $this->_admin_base_url
-        );
-        $preview_button = '<a href="' . $preview_url . '" class="button--secondary messages-preview-button">'
-                          . esc_html__('Preview', 'event_espresso')
-                          . '</a>';
-
-
-        // setup context switcher
-        $this->_set_context_switcher(
-            $message_template_group,
-            [
-                'page'    => 'espresso_messages',
-                'action'  => 'edit_message_template',
-                'id'      => $GRP_ID,
-                'evt_id'  => $EVT_ID,
-                'context' => $context,
-                'extra'   => $preview_button,
-            ]
-        );
-
-
-        // main box
-        $this->_template_args['template_fields']                         = $template_fields;
-        $this->_template_args['sidebar_box_id']                          = 'details';
-        $this->_template_args['action']                                  = $action;
-        $this->_template_args['context']                                 = $context;
-        $this->_template_args['edit_message_template_form_url']          = $edit_message_template_form_url;
-        $this->_template_args['learn_more_about_message_templates_link'] =
-            $this->_learn_more_about_message_templates_link();
-
-
-        $this->_template_args['before_admin_page_content'] = '<div class="ee-msg-admin-header">';
-        $this->_template_args['before_admin_page_content'] .= $this->add_active_context_element(
-            $message_template_group,
-            $context,
-            $context_label
-        );
-        $this->_template_args['before_admin_page_content'] .= $this->add_context_switcher();
-        $this->_template_args['before_admin_page_content'] .= '</div>';
-        $this->_template_args['before_admin_page_content'] .= $this->_add_form_element_before();
-        $this->_template_args['after_admin_page_content']  = $this->_add_form_element_after();
-
-        $this->_template_path = $this->_template_args['GRP_ID']
-            ? EE_MSG_TEMPLATE_PATH . 'ee_msg_details_main_edit_meta_box.template.php'
-            : EE_MSG_TEMPLATE_PATH . 'ee_msg_details_main_add_meta_box.template.php';
-
-        // send along EE_Message_Template_Group object for further template use.
-        $this->_template_args['MTP'] = $message_template_group;
-
-        $this->_template_args['admin_page_content'] = EEH_Template::display_template(
-            $this->_template_path,
-            $this->_template_args,
-            true
-        );
-
-
-        // finally, let's set the admin_page title
-        $this->_admin_page_title = sprintf(esc_html__('Editing %s', 'event_espresso'), $title);
-
-
-        // we need to take care of setting the shortcodes property for use elsewhere.
-        $this->_set_shortcodes();
-
-
-        // final template wrapper
-        $this->display_admin_page_with_sidebar();
-    }
-
-
-    public function filter_tinymce_init($mceInit, $editor_id)
-    {
-        return $mceInit;
-    }
-
-
-    public function add_context_switcher()
-    {
-        return $this->_context_switcher;
-    }
-
-
-    /**
-     * Adds the activation/deactivation toggle for the message template context.
-     *
-     * @param EE_Message_Template_Group $message_template_group
-     * @param string                    $context
-     * @param string                    $context_label
-     * @return string
-     * @throws DomainException
-     * @throws EE_Error
-     * @throws InvalidIdentifierException
-     * @throws ReflectionException
-     */
-    protected function add_active_context_element(
-        EE_Message_Template_Group $message_template_group,
-        $context,
-        $context_label
-    ) {
-        $template_args = [
-            'context'                   => $context,
-            'nonce'                     => wp_create_nonce('activate_' . $context . '_toggle_nonce'),
-            'is_active'                 => $message_template_group->is_context_active($context),
-            'on_off_action'             => $message_template_group->is_context_active($context)
-                ? 'context-off'
-                : 'context-on',
-            'context_label'             => str_replace(['(', ')'], '', $context_label),
-            'message_template_group_id' => $message_template_group->ID(),
-        ];
-        return EEH_Template::display_template(
-            EE_MSG_TEMPLATE_PATH . 'ee_msg_editor_active_context_element.template.php',
-            $template_args,
-            true
-        );
-    }
-
-
-    /**
-     * Ajax callback for `toggle_context_template` ajax action.
-     * Handles toggling the message context on or off.
-     *
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidIdentifierException
-     * @throws InvalidInterfaceException
-     */
-    public function toggle_context_template()
-    {
-        $success = true;
-        // check for required data
-        if (
-            ! (
-                $this->request->requestParamIsSet('message_template_group_id')
-                && $this->request->requestParamIsSet('context')
-                && $this->request->requestParamIsSet('status')
-            )
-        ) {
-            EE_Error::add_error(
-                esc_html__('Required data for doing this action is not available.', 'event_espresso'),
-                __FILE__,
-                __FUNCTION__,
-                __LINE__
-            );
-            $success = false;
-        }
-
-        $nonce   = $this->request->getRequestParam('toggle_context_nonce', '');
-        $context = $this->request->getRequestParam('context', '');
-        $status  = $this->request->getRequestParam('status', '');
-
-        $this->_verify_nonce($nonce, "activate_{$context}_toggle_nonce");
-
-        if ($status !== 'off' && $status !== 'on') {
-            EE_Error::add_error(
-                sprintf(
-                    esc_html__('The given status (%s) is not valid. Must be "off" or "on"', 'event_espresso'),
-                    $status
-                ),
-                __FILE__,
-                __FUNCTION__,
-                __LINE__
-            );
-            $success = false;
-        }
-        $message_template_group_id = $this->request->getRequestParam('message_template_group_id', 0, 'int');
-        $message_template_group    = $this->getMtgModel()->get_one_by_ID($message_template_group_id);
-        if (! $message_template_group instanceof EE_Message_Template_Group) {
-            EE_Error::add_error(
-                sprintf(
-                    esc_html__(
-                        'Unable to change the active state because the given id "%1$d" does not match a valid "%2$s"',
-                        'event_espresso'
-                    ),
-                    $message_template_group_id,
-                    'EE_Message_Template_Group'
-                ),
-                __FILE__,
-                __FUNCTION__,
-                __LINE__
-            );
-            $success = false;
-        }
-        if ($success) {
-            $success = $status === 'off'
-                ? $message_template_group->deactivate_context($context)
-                : $message_template_group->activate_context($context);
-        }
-        $this->_template_args['success'] = $success;
-        $this->_return_json();
-    }
-
-
-    public function _add_form_element_before()
-    {
-        return '<form method="post" action="'
-               . $this->_template_args['edit_message_template_form_url']
-               . '" id="ee-msg-edit-frm">';
-    }
-
-
-    public function _add_form_element_after()
-    {
-        return '</form>';
-    }
-
-
-    /**
-     * This executes switching the template pack for a message template.
-     *
-     * @throws EE_Error
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     * @throws InvalidArgumentException
-     * @throws ReflectionException
-     * @since 4.5.0
-     */
-    public function switch_template_pack()
-    {
-
-        $GRP_ID        = $this->request->getRequestParam('GRP_ID', 0, 'int');
-        $template_pack = $this->request->getRequestParam('template_pack', '');
-
-        // verify we have needed values.
-        if (empty($GRP_ID) || empty($template_pack)) {
-            $this->_template_args['error'] = true;
-            EE_Error::add_error(
-                esc_html__('The required date for switching templates is not available.', 'event_espresso'),
-                __FILE__,
-                __FUNCTION__,
-                __LINE__
-            );
-        } else {
-            // get template, set the new template_pack and then reset to default
-            /** @var EE_Message_Template_Group $message_template_group */
-            $message_template_group = $this->getMtgModel()->get_one_by_ID($GRP_ID);
-
-            $message_template_group->set_template_pack_name($template_pack);
-            $this->request->setRequestParam('msgr', $message_template_group->messenger());
-            $this->request->setRequestParam('mt', $message_template_group->message_type());
-
-            $query_args = $this->_reset_to_default_template();
-
-            if (empty($query_args['id'])) {
-                EE_Error::add_error(
-                    esc_html__(
-                        'Something went wrong with switching the template pack. Please try again or contact EE support',
-                        'event_espresso'
-                    ),
-                    __FILE__,
-                    __FUNCTION__,
-                    __LINE__
-                );
-                $this->_template_args['error'] = true;
-            } else {
-                $template_label       = $message_template_group->get_template_pack()->label;
-                $template_pack_labels = $message_template_group->messenger_obj()->get_supports_labels();
-                EE_Error::add_success(
-                    sprintf(
-                        esc_html__(
-                            'This message template has been successfully switched to use the %1$s %2$s.  Please wait while the page reloads with your new template.',
-                            'event_espresso'
-                        ),
-                        $template_label,
-                        $template_pack_labels->template_pack
-                    )
-                );
-                // generate the redirect url for js.
-                $url = self::add_query_args_and_nonce($query_args, $this->_admin_base_url);
-
-                $this->_template_args['data']['redirect_url'] = $url;
-                $this->_template_args['success']              = true;
-            }
-
-            $this->_return_json();
-        }
-    }
-
-
-    /**
-     * This handles resetting the template for the given messenger/message_type so that users can start from scratch if
-     * they want.
-     *
-     * @access protected
-     * @return array|void
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     * @throws ReflectionException
-     */
-    protected function _reset_to_default_template()
-    {
-        $templates    = [];
-        $GRP_ID       = $this->request->getRequestParam('GRP_ID', 0, 'int');
-        $messenger    = $this->request->getRequestParam('msgr');
-        $message_type = $this->request->getRequestParam('mt');
-        // we need to make sure we've got the info we need.
-        if (! ($GRP_ID && $messenger && $message_type)) {
-            EE_Error::add_error(
-                esc_html__(
-                    'In order to reset the template to its default we require the messenger, message type, and message template GRP_ID to know what is being reset.  At least one of these is missing.',
-                    'event_espresso'
-                ),
-                __FILE__,
-                __FUNCTION__,
-                __LINE__
-            );
-        }
-
-        // all templates will be reset to whatever the defaults are
-        // for the global template matching the messenger and message type.
-        $success = ! empty($GRP_ID);
-
-        if ($success) {
-            // let's first determine if the incoming template is a global template,
-            // if it isn't then we need to get the global template matching messenger and message type.
-            // $MTPG = $this->getMtgModel()->get_one_by_ID( $GRP_ID );
-
-
-            // note this is ONLY deleting the template fields (Message Template rows) NOT the message template group.
-            $success = $this->_delete_mtp_permanently($GRP_ID, false);
-
-            if ($success) {
-                // if successfully deleted, lets generate the new ones.
-                // Note. We set GLOBAL to true, because resets on ANY template
-                // will use the related global template defaults for regeneration.
-                // This means that if a custom template is reset it resets to whatever the related global template is.
-                // HOWEVER, we DO keep the template pack and template variation set
-                // for the current custom template when resetting.
-                $templates = $this->_generate_new_templates($messenger, $message_type, $GRP_ID, true);
-            }
-        }
-
-        // any error messages?
-        if (! $success) {
-            EE_Error::add_error(
-                esc_html__(
-                    'Something went wrong with deleting existing templates. Unable to reset to default',
-                    'event_espresso'
-                ),
-                __FILE__,
-                __FUNCTION__,
-                __LINE__
-            );
-        }
-
-        // all good, let's add a success message!
-        if ($success && ! empty($templates)) {
-            // the info for the template we generated is the first element in the returned array
-            EE_Error::overwrite_success();
-            EE_Error::add_success(esc_html__('Templates have been reset to defaults.', 'event_espresso'));
-        }
-
-
-        $query_args = [
-            'id'      => isset($templates['GRP_ID']) ? $templates['GRP_ID'] : null,
-            'context' => isset($templates['MTP_context']) ? $templates['MTP_context'] : null,
-            'action'  => isset($templates['GRP_ID']) ? 'edit_message_template' : 'global_mtps',
-        ];
-
-        // if called via ajax then we return query args otherwise redirect
-        if ($this->request->isAjax()) {
-            return $query_args;
-        }
-        $this->_redirect_after_action(false, '', '', $query_args, true);
-    }
-
-
-    /**
-     * Retrieve and set the message preview for display.
-     *
-     * @param bool $send if TRUE then we are doing an actual TEST send with the results of the preview.
-     * @return string
-     * @throws ReflectionException
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     */
-    public function _preview_message($send = false)
-    {
-        // first make sure we've got the necessary parameters
-        $GRP_ID = $this->request->getRequestParam('GRP_ID', 0, 'int');
-        if (! ($GRP_ID && $this->_active_messenger_name && $this->_active_message_type_name)) {
-            EE_Error::add_error(
-                esc_html__('Missing necessary parameters for displaying preview', 'event_espresso'),
-                __FILE__,
-                __FUNCTION__,
-                __LINE__
-            );
-        }
-
-        $context = $this->request->getRequestParam('context');
-        // get the preview!
-        $preview = EED_Messages::preview_message(
-            $this->_active_message_type_name,
-            $context,
-            $this->_active_messenger_name,
-            $send
-        );
-
-        if ($send) {
-            return $preview;
-        }
-
-        // if we have an evt_id set on the request, use it.
-        $EVT_ID = $this->request->getRequestParam('evt_id', 0, 'int');
-
-        // let's add a button to go back to the edit view
-        $query_args             = [
-            'id'      => $GRP_ID,
-            'evt_id'  => $EVT_ID,
-            'context' => $context,
-            'action'  => 'edit_message_template',
-        ];
-        $go_back_url            = parent::add_query_args_and_nonce($query_args, $this->_admin_base_url);
-        $preview_button         = '<a href="'
-                                  . $go_back_url
-                                  . '" class="button--secondary messages-preview-go-back-button">'
-                                  . esc_html__('Go Back to Edit', 'event_espresso')
-                                  . '</a>';
-        $message_types          = $this->get_installed_message_types();
-        $active_messenger       = $this->_message_resource_manager->get_active_messenger($this->_active_messenger_name);
-        $active_messenger_label = $active_messenger instanceof EE_messenger
-            ? ucwords($active_messenger->label['singular'])
-            : esc_html__('Unknown Messenger', 'event_espresso');
-        // let's provide a helpful title for context
-        $preview_title = sprintf(
-            esc_html__('Viewing Preview for %s %s Message Template', 'event_espresso'),
-            $active_messenger_label,
-            ucwords($message_types[ $this->_active_message_type_name ]->label['singular'])
-        );
-        if (empty($preview)) {
-            $this->noEventsErrorMessage();
-        }
-        // setup display of preview.
-        $this->_admin_page_title                    = $preview_title;
-        $this->_template_args['admin_page_title']   = $preview_title;
-        $this->_template_args['admin_page_content'] = $preview_button . '<br />' . $preview;
-        $this->_template_args['data']['force_json'] = true;
-
-        return '';
-    }
-
-
-    /**
-     * Used to set an error if there are no events available for generating a preview/test send.
-     *
-     * @param bool $test_send Whether the error should be generated for the context of a test send.
-     */
-    protected function noEventsErrorMessage($test_send = false)
-    {
-        $events_url = parent::add_query_args_and_nonce(
-            [
-                'action' => 'default',
-                'page'   => 'espresso_events',
-            ],
-            admin_url('admin.php')
-        );
-        $message    = $test_send
-            ? esc_html__(
-                'A test message could not be sent for this message template because there are no events created yet. The preview system uses actual events for generating the test message. %1$sGo see your events%2$s!',
-                'event_espresso'
-            )
-            : esc_html__(
-                'There is no preview for this message template available because there are no events created yet. The preview system uses actual events for generating the preview. %1$sGo see your events%2$s!',
-                'event_espresso'
-            );
-
-        EE_Error::add_attention(
-            sprintf(
-                $message,
-                "<a href='{$events_url}'>",
-                '</a>'
-            )
-        );
-    }
-
-
-    /**
-     * The initial _preview_message is on a no headers route.  It will optionally call this if necessary otherwise it
-     * gets called automatically.
-     *
-     * @return void
-     * @throws EE_Error
-     * @since 4.5.0
-     *
-     */
-    protected function _display_preview_message()
-    {
-        $this->display_admin_page_with_no_sidebar();
-    }
-
-
-    /**
-     * registers metaboxes that should show up on the "edit_message_template" page
-     *
-     * @access protected
-     * @return void
-     */
-    protected function _register_edit_meta_boxes()
-    {
-        $this->addMetaBox(
-            'mtp_valid_shortcodes',
-            esc_html__('Valid Shortcodes', 'event_espresso'),
-            [$this, 'shortcode_meta_box'],
-            $this->_current_screen->id,
-            'side'
-        );
-        $this->addMetaBox(
-            'mtp_extra_actions',
-            esc_html__('Extra Actions', 'event_espresso'),
-            [$this, 'extra_actions_meta_box'],
-            $this->_current_screen->id,
-            'side',
-            'high'
-        );
-        $this->addMetaBox(
-            'mtp_templates',
-            esc_html__('Template Styles', 'event_espresso'),
-            [$this, 'template_pack_meta_box'],
-            $this->_current_screen->id,
-            'side',
-            'high'
-        );
-    }
-
-
-    /**
-     * metabox content for all template pack and variation selection.
-     *
-     * @return void
-     * @throws DomainException
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws ReflectionException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     * @since 4.5.0
-     */
-    public function template_pack_meta_box()
-    {
-        $this->_set_message_template_group();
-
-        $tp_collection = EEH_MSG_Template::get_template_pack_collection();
-
-        $tp_select_values = [];
-
-        foreach ($tp_collection as $tp) {
-            // only include template packs that support this messenger and message type!
-            $supports = $tp->get_supports();
-            if (
-                ! isset($supports[ $this->_message_template_group->messenger() ])
-                || ! in_array(
-                    $this->_message_template_group->message_type(),
-                    $supports[ $this->_message_template_group->messenger() ],
-                    true
-                )
-            ) {
-                // not supported
-                continue;
-            }
-
-            $tp_select_values[] = [
-                'text' => $tp->label,
-                'id'   => $tp->dbref,
-            ];
-        }
-
-        // if empty $tp_select_values then we make sure default is set because EVERY message type should be supported by
-        // the default template pack.  This still allows for the odd template pack to override.
-        if (empty($tp_select_values)) {
-            $tp_select_values[] = [
-                'text' => esc_html__('Default', 'event_espresso'),
-                'id'   => 'default',
-            ];
-        }
-
-        // setup variation select values for the currently selected template.
-        $variations               = $this->_message_template_group->get_template_pack()->get_variations(
-            $this->_message_template_group->messenger(),
-            $this->_message_template_group->message_type()
-        );
-        $variations_select_values = [];
-        foreach ($variations as $variation => $label) {
-            $variations_select_values[] = [
-                'text' => $label,
-                'id'   => $variation,
-            ];
-        }
-
-        $template_pack_labels = $this->_message_template_group->messenger_obj()->get_supports_labels();
-
-        $template_args['template_packs_selector']        = EEH_Form_Fields::select_input(
-            'MTP_template_pack',
-            $tp_select_values,
-            $this->_message_template_group->get_template_pack_name()
-        );
-        $template_args['variations_selector']            = EEH_Form_Fields::select_input(
-            'MTP_template_variation',
-            $variations_select_values,
-            $this->_message_template_group->get_template_pack_variation()
-        );
-        $template_args['template_pack_label']            = $template_pack_labels->template_pack;
-        $template_args['template_variation_label']       = $template_pack_labels->template_variation;
-        $template_args['template_pack_description']      = $template_pack_labels->template_pack_description;
-        $template_args['template_variation_description'] = $template_pack_labels->template_variation_description;
-
-        $template = EE_MSG_TEMPLATE_PATH . 'template_pack_and_variations_metabox.template.php';
-
-        EEH_Template::display_template($template, $template_args);
-    }
-
-
-    /**
-     * This meta box holds any extra actions related to Message Templates
-     * For now, this includes Resetting templates to defaults and sending a test email.
-     *
-     * @access  public
-     * @return void
-     * @throws EE_Error
-     */
-    public function extra_actions_meta_box()
-    {
-        $template_form_fields = [];
-
-        $extra_args = [
-            'msgr'   => $this->_message_template_group->messenger(),
-            'mt'     => $this->_message_template_group->message_type(),
-            'GRP_ID' => $this->_message_template_group->GRP_ID(),
-        ];
-        // first we need to see if there are any fields
-        $fields = $this->_message_template_group->messenger_obj()->get_test_settings_fields();
-
-        if (! empty($fields)) {
-            // yup there be fields
-            foreach ($fields as $field => $config) {
-                $field_id = $this->_message_template_group->messenger() . '_' . $field;
-                $existing = $this->_message_template_group->messenger_obj()->get_existing_test_settings();
-                $default  = isset($config['default']) ? $config['default'] : '';
-                $default  = isset($config['value']) ? $config['value'] : $default;
-
-                // if type is hidden and the value is empty
-                // something may have gone wrong so let's correct with the defaults
-                $fix                = $config['input'] === 'hidden'
-                                      && isset($existing[ $field ])
-                                      && empty($existing[ $field ])
-                    ? $default
-                    : '';
-                $existing[ $field ] = isset($existing[ $field ]) && empty($fix)
-                    ? $existing[ $field ]
-                    : $fix;
-
-                $template_form_fields[ $field_id ] = [
-                    'name'       => 'test_settings_fld[' . $field . ']',
-                    'label'      => $config['label'],
-                    'input'      => $config['input'],
-                    'type'       => $config['type'],
-                    'required'   => $config['required'],
-                    'validation' => $config['validation'],
-                    'value'      => isset($existing[ $field ]) ? $existing[ $field ] : $default,
-                    'css_class'  => $config['css_class'],
-                    'options'    => isset($config['options']) ? $config['options'] : [],
-                    'default'    => $default,
-                    'format'     => $config['format'],
-                ];
-            }
-        }
-
-        $test_settings_html = ! empty($template_form_fields)
-            ? $this->_generate_admin_form_fields($template_form_fields, 'string', 'ee_tst_settings_flds')
-            : '';
-
-        // print out $test_settings_fields
-        if (! empty($test_settings_html)) {
-            $test_settings_html .= '<input type="submit" class="button--primary mtp-test-button alignright" ';
-            $test_settings_html .= 'name="test_button" value="';
-            $test_settings_html .= esc_html__('Test Send', 'event_espresso');
-            $test_settings_html .= '" /><div style="clear:both"></div>';
-        }
-
-        // and button
-        $test_settings_html .= '<div class="publishing-action alignright resetbutton">';
-        $test_settings_html .= '<p>';
-        $test_settings_html .= esc_html__('Need to reset this message type and start over?', 'event_espresso');
-        $test_settings_html .= '</p>';
-        $test_settings_html .= $this->get_action_link_or_button(
-            'reset_to_default',
-            'reset',
-            $extra_args,
-            'button--primary reset-default-button'
-        );
-        $test_settings_html .= '</div><div style="clear:both"></div>';
-        echo wp_kses($test_settings_html, AllowedTags::getWithFormTags());
-    }
-
-
-    /**
-     * This returns the shortcode selector skeleton for a given context and field.
-     *
-     * @param string $field           The name of the field retrieving shortcodes for.
-     * @param string $linked_input_id The css id of the input that the shortcodes get added to.
-     * @return string
-     * @throws DomainException
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws ReflectionException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     * @since 4.9.rc.000
-     */
-    protected function _get_shortcode_selector($field, $linked_input_id)
-    {
-        $template_args = [
-            'shortcodes'      => $this->_get_shortcodes([$field]),
-            'fieldname'       => $field,
-            'linked_input_id' => $linked_input_id,
-        ];
-
-        return EEH_Template::display_template(
-            EE_MSG_TEMPLATE_PATH . 'shortcode_selector_skeleton.template.php',
-            $template_args,
-            true
-        );
-    }
-
-
-    /**
-     * This just takes care of returning the meta box content for shortcodes (only used on the edit message template
-     * page)
-     *
-     * @access public
-     * @return void
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws ReflectionException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     */
-    public function shortcode_meta_box()
-    {
-        $shortcodes = $this->_get_shortcodes([], false);
-        // just make sure the shortcodes property is set
-        // $messenger = $this->_message_template_group->messenger_obj();
-        // now let's set the content depending on the status of the shortcodes array
-        if (empty($shortcodes)) {
-            echo '<p>' . esc_html__('There are no valid shortcodes available', 'event_espresso') . '</p>';
-            return;
-        }
-        ?>
+	/**
+	 * @var EEM_Message
+	 */
+	private $MSG_MODEL;
+
+	/**
+	 * @var EEM_Message_Template
+	 */
+	private $MTP_MODEL;
+
+	/**
+	 * @var EEM_Message_Template_Group
+	 */
+	private $MTG_MODEL;
+
+	/**
+	 * @var EE_Message_Resource_Manager $_message_resource_manager
+	 */
+	protected $_message_resource_manager;
+
+	/**
+	 * @var string
+	 */
+	protected $_active_message_type_name = '';
+
+	/**
+	 * @var string
+	 */
+	protected $_active_messenger_name = '';
+
+	/**
+	 * @var EE_messenger $_active_messenger
+	 */
+	protected $_active_messenger;
+
+	protected $_activate_meta_box_type;
+
+	protected $_current_message_meta_box;
+
+	protected $_current_message_meta_box_object;
+
+	protected $_context_switcher;
+
+	protected $_shortcodes           = [];
+
+	protected $_active_messengers    = [];
+
+	protected $_active_message_types = [];
+
+	/**
+	 * @var EE_Message_Template_Group $_message_template_group
+	 */
+	protected $_message_template_group;
+
+	protected $_m_mt_settings = [];
+
+
+	/**
+	 * This is set via the _set_message_template_group method and holds whatever the template pack for the group is.
+	 * IF there is no group then it gets automatically set to the Default template pack.
+	 *
+	 * @since 4.5.0
+	 *
+	 * @var EE_Messages_Template_Pack
+	 */
+	protected $_template_pack;
+
+
+	/**
+	 * This is set via the _set_message_template_group method and holds whatever the template pack variation for the
+	 * group is.  If there is no group then it automatically gets set to default.
+	 *
+	 * @since 4.5.0
+	 *
+	 * @var string
+	 */
+	protected $_variation;
+
+
+	/**
+	 * @param bool $routing
+	 * @throws EE_Error
+	 * @throws ReflectionException
+	 */
+	public function __construct($routing = true)
+	{
+		// make sure messages autoloader is running
+		EED_Messages::set_autoloaders();
+		parent::__construct($routing);
+	}
+
+
+	/**
+	 * @return EEM_Message
+	 * @throws EE_Error
+	 */
+	public function getMsgModel()
+	{
+		if (! $this->MSG_MODEL instanceof EEM_Message) {
+			$this->MSG_MODEL = EEM_Message::instance();
+		}
+		return $this->MSG_MODEL;
+	}
+
+
+	/**
+	 * @return EEM_Message_Template
+	 * @throws EE_Error
+	 */
+	public function getMtpModel()
+	{
+		if (! $this->MTP_MODEL instanceof EEM_Message_Template) {
+			$this->MTP_MODEL = EEM_Message_Template::instance();
+		}
+		return $this->MTP_MODEL;
+	}
+
+
+	/**
+	 * @return EEM_Message_Template_Group
+	 * @throws EE_Error
+	 */
+	public function getMtgModel()
+	{
+		if (! $this->MTG_MODEL instanceof EEM_Message_Template_Group) {
+			$this->MTG_MODEL = EEM_Message_Template_Group::instance();
+		}
+		return $this->MTG_MODEL;
+	}
+
+
+	/**
+	 * @throws EE_Error
+	 * @throws ReflectionException
+	 */
+	protected function _init_page_props()
+	{
+		$this->page_slug        = EE_MSG_PG_SLUG;
+		$this->page_label       = esc_html__('Messages Settings', 'event_espresso');
+		$this->_admin_base_url  = EE_MSG_ADMIN_URL;
+		$this->_admin_base_path = EE_MSG_ADMIN;
+
+		$messenger    = $this->request->getRequestParam('messenger', '');
+		$message_type = $this->request->getRequestParam('message_type', '');
+		$this->_active_messenger_name    = $this->request->getRequestParam('MTP_messenger', $messenger);
+		$this->_active_message_type_name = $this->request->getRequestParam('MTP_message_type', $message_type);
+
+		$this->_load_message_resource_manager();
+	}
+
+
+	/**
+	 * loads messenger objects into the $_active_messengers property (so we can access the needed methods)
+	 *
+	 * @throws EE_Error
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidArgumentException
+	 * @throws ReflectionException
+	 */
+	protected function _load_message_resource_manager()
+	{
+		$this->_message_resource_manager = EE_Registry::instance()->load_lib('Message_Resource_Manager');
+	}
+
+
+	/**
+	 * @return array
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 * @deprecated 4.9.9.rc.014
+	 */
+	public function get_messengers_for_list_table()
+	{
+		EE_Error::doing_it_wrong(
+			__METHOD__,
+			sprintf(
+				esc_html__(
+					'This method is no longer in use.  There is no replacement for it. The method was used to generate a set of values for use in creating a messenger filter dropdown which is now generated differently via %s',
+					'event_espresso'
+				),
+				'Messages_Admin_Page::get_messengers_select_input()'
+			),
+			'4.9.9.rc.014'
+		);
+
+		$m_values          = [];
+		$active_messengers = $this->getMsgModel()->get_all(['group_by' => 'MSG_messenger']);
+		// setup messengers for selects
+		$i = 1;
+		foreach ($active_messengers as $active_messenger) {
+			if ($active_messenger instanceof EE_Message) {
+				$m_values[ $i ]['id']   = $active_messenger->messenger();
+				$m_values[ $i ]['text'] = ucwords($active_messenger->messenger_label());
+				$i++;
+			}
+		}
+
+		return $m_values;
+	}
+
+
+	/**
+	 * @return array
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 * @deprecated 4.9.9.rc.014
+	 */
+	public function get_message_types_for_list_table()
+	{
+		EE_Error::doing_it_wrong(
+			__METHOD__,
+			sprintf(
+				esc_html__(
+					'This method is no longer in use.  There is no replacement for it. The method was used to generate a set of values for use in creating a message type filter dropdown which is now generated differently via %s',
+					'event_espresso'
+				),
+				'Messages_Admin_Page::get_message_types_select_input()'
+			),
+			'4.9.9.rc.014'
+		);
+
+		$mt_values       = [];
+		$active_messages = $this->getMsgModel()->get_all(['group_by' => 'MSG_message_type']);
+		$i               = 1;
+		foreach ($active_messages as $active_message) {
+			if ($active_message instanceof EE_Message) {
+				$mt_values[ $i ]['id']   = $active_message->message_type();
+				$mt_values[ $i ]['text'] = ucwords($active_message->message_type_label());
+				$i++;
+			}
+		}
+
+		return $mt_values;
+	}
+
+
+	/**
+	 * @return array
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 * @deprecated 4.9.9.rc.014
+	 */
+	public function get_contexts_for_message_types_for_list_table()
+	{
+		EE_Error::doing_it_wrong(
+			__METHOD__,
+			sprintf(
+				esc_html__(
+					'This method is no longer in use.  There is no replacement for it. The method was used to generate a set of values for use in creating a message type context filter dropdown which is now generated differently via %s',
+					'event_espresso'
+				),
+				'Messages_Admin_Page::get_contexts_for_message_types_select_input()'
+			),
+			'4.9.9.rc.014'
+		);
+
+		$contexts                = [];
+		$active_message_contexts = $this->getMsgModel()->get_all(['group_by' => 'MSG_context']);
+		foreach ($active_message_contexts as $active_message) {
+			if ($active_message instanceof EE_Message) {
+				$message_type = $active_message->message_type_object();
+				if ($message_type instanceof EE_message_type) {
+					$message_type_contexts = $message_type->get_contexts();
+					foreach ($message_type_contexts as $context => $context_details) {
+						$contexts[ $context ] = $context_details['label'];
+					}
+				}
+			}
+		}
+
+		return $contexts;
+	}
+
+
+	/**
+	 * Generate select input with provided messenger options array.
+	 *
+	 * @param array $messenger_options Array of messengers indexed by messenger slug and values are the messenger
+	 *                                 labels.
+	 * @return string
+	 * @throws EE_Error
+	 */
+	public function get_messengers_select_input($messenger_options)
+	{
+		// if empty or just one value then just return an empty string
+		if (
+			empty($messenger_options)
+			|| ! is_array($messenger_options)
+			|| count($messenger_options) === 1
+		) {
+			return '';
+		}
+		// merge in default
+		$messenger_options = array_merge(
+			['none_selected' => esc_html__('Show All Messengers', 'event_espresso')],
+			$messenger_options
+		);
+		$input             = new EE_Select_Input(
+			$messenger_options,
+			[
+				'html_name'  => 'ee_messenger_filter_by',
+				'html_id'    => 'ee_messenger_filter_by',
+				'html_class' => 'wide',
+				'default'    => $this->request->getRequestParam('ee_messenger_filter_by', 'none_selected', 'title'),
+			]
+		);
+
+		return $input->get_html_for_input();
+	}
+
+
+	/**
+	 * Generate select input with provided message type options array.
+	 *
+	 * @param array $message_type_options Array of message types indexed by message type slug, and values are the
+	 *                                    message type labels
+	 * @return string
+	 * @throws EE_Error
+	 */
+	public function get_message_types_select_input($message_type_options)
+	{
+		// if empty or count of options is 1 then just return an empty string
+		if (
+			empty($message_type_options)
+			|| ! is_array($message_type_options)
+			|| count($message_type_options) === 1
+		) {
+			return '';
+		}
+		// merge in default
+		$message_type_options = array_merge(
+			['none_selected' => esc_html__('Show All Message Types', 'event_espresso')],
+			$message_type_options
+		);
+		$input                = new EE_Select_Input(
+			$message_type_options,
+			[
+				'html_name'  => 'ee_message_type_filter_by',
+				'html_id'    => 'ee_message_type_filter_by',
+				'html_class' => 'wide',
+				'default'    => $this->request->getRequestParam('ee_message_type_filter_by', 'none_selected', 'title'),
+			]
+		);
+
+		return $input->get_html_for_input();
+	}
+
+
+	/**
+	 * Generate select input with provide message type contexts array.
+	 *
+	 * @param array $context_options Array of message type contexts indexed by context slug, and values are the
+	 *                               context label.
+	 * @return string
+	 * @throws EE_Error
+	 */
+	public function get_contexts_for_message_types_select_input($context_options)
+	{
+		// if empty or count of options is one then just return empty string
+		if (
+			empty($context_options)
+			|| ! is_array($context_options)
+			|| count($context_options) === 1
+		) {
+			return '';
+		}
+		// merge in default
+		$context_options = array_merge(
+			['none_selected' => esc_html__('Show all Contexts', 'event_espresso')],
+			$context_options
+		);
+		$input           = new EE_Select_Input(
+			$context_options,
+			[
+				'html_name'  => 'ee_context_filter_by',
+				'html_id'    => 'ee_context_filter_by',
+				'html_class' => 'wide',
+				'default'    => $this->request->getRequestParam('ee_context_filter_by', 'none_selected', 'title'),
+			]
+		);
+
+		return $input->get_html_for_input();
+	}
+
+
+	protected function _ajax_hooks()
+	{
+		add_action('wp_ajax_activate_messenger', [$this, 'activate_messenger_toggle']);
+		add_action('wp_ajax_activate_mt', [$this, 'activate_mt_toggle']);
+		add_action('wp_ajax_ee_msgs_save_settings', [$this, 'save_settings']);
+		add_action('wp_ajax_ee_msgs_update_mt_form', [$this, 'update_mt_form']);
+		add_action('wp_ajax_switch_template_pack', [$this, 'switch_template_pack']);
+		add_action('wp_ajax_toggle_context_template', [$this, 'toggle_context_template']);
+	}
+
+
+	protected function _define_page_props()
+	{
+		$this->_admin_page_title = $this->page_label;
+		$this->_labels           = [
+			'buttons'    => [
+				'add'    => esc_html__('Add New Message Template', 'event_espresso'),
+				'edit'   => esc_html__('Edit Message Template', 'event_espresso'),
+				'delete' => esc_html__('Delete Message Template', 'event_espresso'),
+			],
+			'publishbox' => esc_html__('Update Actions', 'event_espresso'),
+		];
+	}
+
+
+	/**
+	 *        an array for storing key => value pairs of request actions and their corresponding methods
+	 *
+	 * @access protected
+	 * @return void
+	 */
+	protected function _set_page_routes()
+	{
+		$GRP_ID = $this->request->getRequestParam('GRP_ID', 0, 'int');
+		$GRP_ID = $this->request->getRequestParam('id', $GRP_ID, 'int');
+		$MSG_ID = $this->request->getRequestParam('MSG_ID', 0, 'int');
+
+		$this->_page_routes = [
+			'default'                          => [
+				'func'       => '_message_queue_list_table',
+				'capability' => 'ee_read_global_messages',
+			],
+			'global_mtps'                      => [
+				'func'       => '_ee_default_messages_overview_list_table',
+				'capability' => 'ee_read_global_messages',
+			],
+			'custom_mtps'                      => [
+				'func'       => '_custom_mtps_preview',
+				'capability' => 'ee_read_messages',
+			],
+			'add_new_message_template'         => [
+				'func'       => 'add_message_template',
+				'capability' => 'ee_edit_messages',
+				'noheader'   => true,
+			],
+			'edit_message_template'            => [
+				'func'       => '_edit_message_template',
+				'capability' => 'ee_edit_message',
+				'obj_id'     => $GRP_ID,
+			],
+			'preview_message'                  => [
+				'func'               => '_preview_message',
+				'capability'         => 'ee_read_message',
+				'obj_id'             => $GRP_ID,
+				'noheader'           => true,
+				'headers_sent_route' => 'display_preview_message',
+			],
+			'display_preview_message'          => [
+				'func'       => '_display_preview_message',
+				'capability' => 'ee_read_message',
+				'obj_id'     => $GRP_ID,
+			],
+			'insert_message_template'          => [
+				'func'       => '_insert_or_update_message_template',
+				'capability' => 'ee_edit_messages',
+				'args'       => ['new' => true],
+				'noheader'   => true,
+			],
+			'update_message_template'          => [
+				'func'       => '_insert_or_update_message_template',
+				'capability' => 'ee_edit_message',
+				'obj_id'     => $GRP_ID,
+				'args'       => ['new' => false],
+				'noheader'   => true,
+			],
+			'trash_message_template'           => [
+				'func'       => '_trash_or_restore_message_template',
+				'capability' => 'ee_delete_message',
+				'obj_id'     => $GRP_ID,
+				'args'       => ['trash' => true, 'all' => true],
+				'noheader'   => true,
+			],
+			'trash_message_template_context'   => [
+				'func'       => '_trash_or_restore_message_template',
+				'capability' => 'ee_delete_message',
+				'obj_id'     => $GRP_ID,
+				'args'       => ['trash' => true],
+				'noheader'   => true,
+			],
+			'restore_message_template'         => [
+				'func'       => '_trash_or_restore_message_template',
+				'capability' => 'ee_delete_message',
+				'obj_id'     => $GRP_ID,
+				'args'       => ['trash' => false, 'all' => true],
+				'noheader'   => true,
+			],
+			'restore_message_template_context' => [
+				'func'       => '_trash_or_restore_message_template',
+				'capability' => 'ee_delete_message',
+				'obj_id'     => $GRP_ID,
+				'args'       => ['trash' => false],
+				'noheader'   => true,
+			],
+			'delete_message_template'          => [
+				'func'       => '_delete_message_template',
+				'capability' => 'ee_delete_message',
+				'obj_id'     => $GRP_ID,
+				'noheader'   => true,
+			],
+			'reset_to_default'                 => [
+				'func'       => '_reset_to_default_template',
+				'capability' => 'ee_edit_message',
+				'obj_id'     => $GRP_ID,
+				'noheader'   => true,
+			],
+			'settings'                         => [
+				'func'       => '_settings',
+				'capability' => 'manage_options',
+			],
+			'update_global_settings'           => [
+				'func'       => '_update_global_settings',
+				'capability' => 'manage_options',
+				'noheader'   => true,
+			],
+			'generate_now'                     => [
+				'func'       => '_generate_now',
+				'capability' => 'ee_send_message',
+				'noheader'   => true,
+			],
+			'generate_and_send_now'            => [
+				'func'       => '_generate_and_send_now',
+				'capability' => 'ee_send_message',
+				'noheader'   => true,
+			],
+			'queue_for_resending'              => [
+				'func'       => '_queue_for_resending',
+				'capability' => 'ee_send_message',
+				'noheader'   => true,
+			],
+			'send_now'                         => [
+				'func'       => '_send_now',
+				'capability' => 'ee_send_message',
+				'noheader'   => true,
+			],
+			'delete_ee_message'                => [
+				'func'       => '_delete_ee_messages',
+				'capability' => 'ee_delete_messages',
+				'noheader'   => true,
+			],
+			'delete_ee_messages'               => [
+				'func'       => '_delete_ee_messages',
+				'capability' => 'ee_delete_messages',
+				'noheader'   => true,
+				'obj_id'     => $MSG_ID,
+			],
+		];
+	}
+
+
+	protected function _set_page_config()
+	{
+		$this->_page_config = [
+			'default'                  => [
+				'nav'           => [
+					'label' => esc_html__('Message Activity', 'event_espresso'),
+					'icon' => 'dashicons-email',
+					'order' => 10,
+				],
+				'list_table'    => 'EE_Message_List_Table',
+				// 'qtips' => array( 'EE_Message_List_Table_Tips' ),
+				'require_nonce' => false,
+			],
+			'global_mtps'              => [
+				'nav'           => [
+					'label' => esc_html__('Default Message Templates', 'event_espresso'),
+					'icon' => 'dashicons-layout',
+					'order' => 20,
+				],
+				'list_table'    => 'Messages_Template_List_Table',
+				'help_tabs'     => [
+					'messages_overview_help_tab'                                => [
+						'title'    => esc_html__('Messages Overview', 'event_espresso'),
+						'filename' => 'messages_overview',
+					],
+					'messages_overview_messages_table_column_headings_help_tab' => [
+						'title'    => esc_html__('Messages Table Column Headings', 'event_espresso'),
+						'filename' => 'messages_overview_table_column_headings',
+					],
+					'messages_overview_messages_filters_help_tab'               => [
+						'title'    => esc_html__('Message Filters', 'event_espresso'),
+						'filename' => 'messages_overview_filters',
+					],
+					'messages_overview_messages_views_help_tab'                 => [
+						'title'    => esc_html__('Message Views', 'event_espresso'),
+						'filename' => 'messages_overview_views',
+					],
+					'message_overview_message_types_help_tab'                   => [
+						'title'    => esc_html__('Message Types', 'event_espresso'),
+						'filename' => 'messages_overview_types',
+					],
+					'messages_overview_messengers_help_tab'                     => [
+						'title'    => esc_html__('Messengers', 'event_espresso'),
+						'filename' => 'messages_overview_messengers',
+					],
+				],
+				'require_nonce' => false,
+			],
+			'custom_mtps'              => [
+				'nav'           => [
+					'label' => esc_html__('Custom Message Templates', 'event_espresso'),
+					'icon' => 'dashicons-admin-customizer',
+					'order' => 30,
+				],
+				'help_tabs'     => [],
+				'require_nonce' => false,
+			],
+			'add_new_message_template' => [
+				'nav'           => [
+					'label'      => esc_html__('Add New Message Templates', 'event_espresso'),
+					'icon' => 'dashicons-plus-alt',
+					'order'      => 5,
+					'persistent' => false,
+				],
+				'require_nonce' => false,
+			],
+			'edit_message_template'    => [
+				'labels'        => [
+					'buttons'    => [
+						'reset' => esc_html__('Reset Templates', 'event_espresso'),
+					],
+					'publishbox' => esc_html__('Update Actions', 'event_espresso'),
+				],
+				'nav'           => [
+					'label'      => esc_html__('Edit Message Templates', 'event_espresso'),
+					'icon' => 'dashicons-edit-large',
+					'order'      => 5,
+					'persistent' => false,
+					'url'        => '',
+				],
+				'metaboxes'     => ['_publish_post_box', '_register_edit_meta_boxes'],
+				'has_metaboxes' => true,
+				'help_tabs'     => [
+					'edit_message_template'            => [
+						'title'    => esc_html__('Message Template Editor', 'event_espresso'),
+						'callback' => 'edit_message_template_help_tab',
+					],
+					'message_templates_help_tab'       => [
+						'title'    => esc_html__('Message Templates', 'event_espresso'),
+						'filename' => 'messages_templates',
+					],
+					'message_template_shortcodes'      => [
+						'title'    => esc_html__('Message Shortcodes', 'event_espresso'),
+						'callback' => 'message_template_shortcodes_help_tab',
+					],
+					'message_preview_help_tab'         => [
+						'title'    => esc_html__('Message Preview', 'event_espresso'),
+						'filename' => 'messages_preview',
+					],
+					'messages_overview_other_help_tab' => [
+						'title'    => esc_html__('Messages Other', 'event_espresso'),
+						'filename' => 'messages_overview_other',
+					],
+				],
+				'require_nonce' => false,
+			],
+			'display_preview_message'  => [
+				'nav'           => [
+					'label'      => esc_html__('Message Preview', 'event_espresso'),
+					'icon' => 'dashicons-visibility-bar',
+					'order'      => 5,
+					'url'        => '',
+					'persistent' => false,
+				],
+				'help_tabs'     => [
+					'preview_message' => [
+						'title'    => esc_html__('About Previews', 'event_espresso'),
+						'callback' => 'preview_message_help_tab',
+					],
+				],
+				'require_nonce' => false,
+			],
+			'settings'                 => [
+				'nav'           => [
+					'label' => esc_html__('Settings', 'event_espresso'),
+					'icon' => 'dashicons-admin-generic',
+					'order' => 40,
+				],
+				'metaboxes'     => ['_messages_settings_metaboxes'],
+				'help_tabs'     => [
+					'messages_settings_help_tab'               => [
+						'title'    => esc_html__('Messages Settings', 'event_espresso'),
+						'filename' => 'messages_settings',
+					],
+					'messages_settings_message_types_help_tab' => [
+						'title'    => esc_html__('Activating / Deactivating Message Types', 'event_espresso'),
+						'filename' => 'messages_settings_message_types',
+					],
+					'messages_settings_messengers_help_tab'    => [
+						'title'    => esc_html__('Activating / Deactivating Messengers', 'event_espresso'),
+						'filename' => 'messages_settings_messengers',
+					],
+				],
+				'require_nonce' => false,
+			],
+		];
+	}
+
+
+	protected function _add_screen_options()
+	{
+		// todo
+	}
+
+
+	protected function _add_screen_options_global_mtps()
+	{
+		/**
+		 * Note: the reason for the value swap here on $this->_admin_page_title is because $this->_per_page_screen_options
+		 * uses the $_admin_page_title property and we want different outputs in the different spots.
+		 */
+		$page_title              = $this->_admin_page_title;
+		$this->_admin_page_title = esc_html__('Global Message Templates', 'event_espresso');
+		$this->_per_page_screen_option();
+		$this->_admin_page_title = $page_title;
+	}
+
+
+	protected function _add_screen_options_default()
+	{
+		$this->_admin_page_title = esc_html__('Message Activity', 'event_espresso');
+		$this->_per_page_screen_option();
+	}
+
+
+	// none of the below group are currently used for Messages
+	protected function _add_feature_pointers()
+	{
+	}
+
+
+	public function admin_init()
+	{
+	}
+
+
+	public function admin_notices()
+	{
+	}
+
+
+	public function admin_footer_scripts()
+	{
+	}
+
+
+	public function messages_help_tab()
+	{
+		EEH_Template::display_template(EE_MSG_TEMPLATE_PATH . 'ee_msg_messages_help_tab.template.php');
+	}
+
+
+	public function messengers_help_tab()
+	{
+		EEH_Template::display_template(EE_MSG_TEMPLATE_PATH . 'ee_msg_messenger_help_tab.template.php');
+	}
+
+
+	public function message_types_help_tab()
+	{
+		EEH_Template::display_template(EE_MSG_TEMPLATE_PATH . 'ee_msg_message_type_help_tab.template.php');
+	}
+
+
+	public function messages_overview_help_tab()
+	{
+		EEH_Template::display_template(EE_MSG_TEMPLATE_PATH . 'ee_msg_overview_help_tab.template.php');
+	}
+
+
+	public function message_templates_help_tab()
+	{
+		EEH_Template::display_template(EE_MSG_TEMPLATE_PATH . 'ee_msg_message_templates_help_tab.template.php');
+	}
+
+
+	public function edit_message_template_help_tab()
+	{
+		$args['img1'] = '<img src="' . EE_MSG_ASSETS_URL . 'images/editor.png' . '" alt="'
+						. esc_attr__('Editor Title', 'event_espresso')
+						. '" />';
+		$args['img2'] = '<img src="' . EE_MSG_ASSETS_URL . 'images/switch-context.png' . '" alt="'
+						. esc_attr__('Context Switcher and Preview', 'event_espresso')
+						. '" />';
+		$args['img3'] = '<img class="left" src="' . EE_MSG_ASSETS_URL . 'images/form-fields.png' . '" alt="'
+						. esc_attr__('Message Template Form Fields', 'event_espresso')
+						. '" />';
+		$args['img4'] = '<img class="right" src="' . EE_MSG_ASSETS_URL . 'images/shortcodes-metabox.png' . '" alt="'
+						. esc_attr__('Shortcodes Metabox', 'event_espresso')
+						. '" />';
+		$args['img5'] = '<img class="right" src="' . EE_MSG_ASSETS_URL . 'images/publish-meta-box.png' . '" alt="'
+						. esc_attr__('Publish Metabox', 'event_espresso')
+						. '" />';
+		EEH_Template::display_template(
+			EE_MSG_TEMPLATE_PATH . 'ee_msg_messages_templates_editor_help_tab.template.php',
+			$args
+		);
+	}
+
+
+	/**
+	 * @throws ReflectionException
+	 * @throws EE_Error
+	 */
+	public function message_template_shortcodes_help_tab()
+	{
+		$this->_set_shortcodes();
+		$args['shortcodes'] = $this->_shortcodes;
+		EEH_Template::display_template(
+			EE_MSG_TEMPLATE_PATH . 'ee_msg_messages_shortcodes_help_tab.template.php',
+			$args
+		);
+	}
+
+
+	public function preview_message_help_tab()
+	{
+		EEH_Template::display_template(EE_MSG_TEMPLATE_PATH . 'ee_msg_preview_help_tab.template.php');
+	}
+
+
+	public function settings_help_tab()
+	{
+		$args['img1'] = '<img class="inline-text" src="' . EE_MSG_ASSETS_URL . 'images/email-tab-active.png'
+						. '" alt="' . esc_attr__('Active Email Tab', 'event_espresso') . '" />';
+		$args['img2'] = '<img class="inline-text" src="' . EE_MSG_ASSETS_URL . 'images/email-tab-inactive.png'
+						. '" alt="' . esc_attr__('Inactive Email Tab', 'event_espresso') . '" />';
+		$args['img3'] = '<div class="ee-switch">'
+						. '<input class="ee-switch__input" id="ee-on-off-toggle-on" type="checkbox" checked>'
+						. '<label class="ee-switch__toggle" for="ee-on-off-toggle-on"></label>'
+						. '</div>';
+		$args['img4'] = '<div class="switch">'
+						. '<input class="ee-switch__input" id="ee-on-off-toggle-off" type="checkbox">'
+						. '<label class="ee-switch__toggle" for="ee-on-off-toggle-off"></label>'
+						. '</div>';
+		EEH_Template::display_template(EE_MSG_TEMPLATE_PATH . 'ee_msg_messages_settings_help_tab.template.php', $args);
+	}
+
+
+	public function load_scripts_styles()
+	{
+		wp_register_style('espresso_ee_msg', EE_MSG_ASSETS_URL . 'ee_message_admin.css', EVENT_ESPRESSO_VERSION);
+		wp_enqueue_style('espresso_ee_msg');
+
+		wp_register_script(
+			'ee-messages-settings',
+			EE_MSG_ASSETS_URL . 'ee-messages-settings.js',
+			['jquery-ui-droppable', 'ee-serialize-full-array'],
+			EVENT_ESPRESSO_VERSION,
+			true
+		);
+		wp_register_script(
+			'ee-msg-list-table-js',
+			EE_MSG_ASSETS_URL . 'ee_message_admin_list_table.js',
+			['ee-dialog'],
+			EVENT_ESPRESSO_VERSION
+		);
+	}
+
+
+	public function load_scripts_styles_default()
+	{
+		wp_enqueue_script('ee-msg-list-table-js');
+	}
+
+
+	public function wp_editor_css($mce_css)
+	{
+		// if we're on the edit_message_template route
+		if ($this->_req_action === 'edit_message_template' && $this->_active_messenger instanceof EE_messenger) {
+			$message_type_name = $this->_active_message_type_name;
+
+			// we're going to REPLACE the existing mce css
+			// we need to get the css file location from the active messenger
+			$mce_css = $this->_active_messenger->get_variation(
+				$this->_template_pack,
+				$message_type_name,
+				true,
+				'wpeditor',
+				$this->_variation
+			);
+		}
+
+		return $mce_css;
+	}
+
+
+	/**
+	 * @throws EE_Error
+	 * @throws ReflectionException
+	 */
+	public function load_scripts_styles_edit_message_template()
+	{
+
+		$this->_set_shortcodes();
+
+		EE_Registry::$i18n_js_strings['confirm_default_reset']        = sprintf(
+			esc_html__(
+				'Are you sure you want to reset the %s %s message templates?  Remember continuing will reset the templates for all contexts in this messenger and message type group.',
+				'event_espresso'
+			),
+			$this->_message_template_group->messenger_obj()->label['singular'],
+			$this->_message_template_group->message_type_obj()->label['singular']
+		);
+		EE_Registry::$i18n_js_strings['confirm_switch_template_pack'] = esc_html__(
+			'Switching the template pack for a messages template will reset the content for the template so the new layout is loaded.  Any custom content in the existing template will be lost. Are you sure you wish to do this?',
+			'event_espresso'
+		);
+		EE_Registry::$i18n_js_strings['server_error']                 = esc_html__(
+			'An unknown error occurred on the server while attempting to process your request. Please refresh the page and try again or contact support.',
+			'event_espresso'
+		);
+
+		wp_register_script(
+			'ee_msgs_edit_js',
+			EE_MSG_ASSETS_URL . 'ee_message_editor.js',
+			['jquery'],
+			EVENT_ESPRESSO_VERSION
+		);
+
+		wp_enqueue_script('ee_admin_js');
+		wp_enqueue_script('ee_msgs_edit_js');
+
+		// add in special css for tiny_mce
+		add_filter('mce_css', [$this, 'wp_editor_css']);
+	}
+
+
+	/**
+	 * @throws EE_Error
+	 * @throws ReflectionException
+	 */
+	public function load_scripts_styles_display_preview_message()
+	{
+		$this->_set_message_template_group();
+		if ($this->_active_messenger_name) {
+			$this->_active_messenger = $this->_message_resource_manager->get_active_messenger(
+				$this->_active_messenger_name
+			);
+		}
+
+		wp_enqueue_style(
+			'espresso_preview_css',
+			$this->_active_messenger->get_variation(
+				$this->_template_pack,
+				$this->_active_message_type_name,
+				true,
+				'preview',
+				$this->_variation
+			)
+		);
+	}
+
+
+	public function load_scripts_styles_settings()
+	{
+		wp_register_style(
+			'ee-message-settings',
+			EE_MSG_ASSETS_URL . 'ee_message_settings.css',
+			[],
+			EVENT_ESPRESSO_VERSION
+		);
+		wp_enqueue_style('ee-text-links');
+		wp_enqueue_style('ee-message-settings');
+		wp_enqueue_script('ee-messages-settings');
+	}
+
+
+	/**
+	 * set views array for List Table
+	 */
+	public function _set_list_table_views_global_mtps()
+	{
+		$this->_views = [
+			'in_use' => [
+				'slug'  => 'in_use',
+				'label' => esc_html__('In Use', 'event_espresso'),
+				'count' => 0,
+			],
+		];
+	}
+
+
+	/**
+	 * Set views array for the Custom Template List Table
+	 */
+	public function _set_list_table_views_custom_mtps()
+	{
+		$this->_set_list_table_views_global_mtps();
+		$this->_views['in_use']['bulk_action'] = [
+			'trash_message_template' => esc_html__('Move to Trash', 'event_espresso'),
+		];
+	}
+
+
+	/**
+	 * set views array for message queue list table
+	 *
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidArgumentException
+	 * @throws EE_Error
+	 * @throws ReflectionException
+	 */
+	public function _set_list_table_views_default()
+	{
+		EE_Registry::instance()->load_helper('Template');
+
+		$common_bulk_actions = EE_Registry::instance()->CAP->current_user_can(
+			'ee_send_message',
+			'message_list_table_bulk_actions'
+		)
+			? [
+				'generate_now'          => esc_html__('Generate Now', 'event_espresso'),
+				'generate_and_send_now' => esc_html__('Generate and Send Now', 'event_espresso'),
+				'queue_for_resending'   => esc_html__('Queue for Resending', 'event_espresso'),
+				'send_now'              => esc_html__('Send Now', 'event_espresso'),
+			]
+			: [];
+
+		$delete_bulk_action = EE_Registry::instance()->CAP->current_user_can(
+			'ee_delete_messages',
+			'message_list_table_bulk_actions'
+		)
+			? ['delete_ee_messages' => esc_html__('Delete Messages', 'event_espresso')]
+			: [];
+
+
+		$this->_views = [
+			'all' => [
+				'slug'        => 'all',
+				'label'       => esc_html__('All', 'event_espresso'),
+				'count'       => 0,
+				'bulk_action' => array_merge($common_bulk_actions, $delete_bulk_action),
+			],
+		];
+
+
+		foreach ($this->getMsgModel()->all_statuses() as $status) {
+			if ($status === EEM_Message::status_debug_only && ! EEM_Message::debug()) {
+				continue;
+			}
+			$status_bulk_actions = $common_bulk_actions;
+			// unset bulk actions not applying to status
+			if (! empty($status_bulk_actions)) {
+				switch ($status) {
+					case EEM_Message::status_idle:
+					case EEM_Message::status_resend:
+						$status_bulk_actions['send_now'] = $common_bulk_actions['send_now'];
+						break;
+
+					case EEM_Message::status_failed:
+					case EEM_Message::status_debug_only:
+					case EEM_Message::status_messenger_executing:
+						$status_bulk_actions = [];
+						break;
+
+					case EEM_Message::status_incomplete:
+						unset($status_bulk_actions['queue_for_resending'], $status_bulk_actions['send_now']);
+						break;
+
+					case EEM_Message::status_retry:
+					case EEM_Message::status_sent:
+						unset($status_bulk_actions['generate_now'], $status_bulk_actions['generate_and_send_now']);
+						break;
+				}
+			}
+
+			// skip adding messenger executing status to views because it will be included with the Failed view.
+			if ($status === EEM_Message::status_messenger_executing) {
+				continue;
+			}
+
+			$this->_views[ strtolower($status) ] = [
+				'slug'        => strtolower($status),
+				'label'       => EEH_Template::pretty_status($status, false, 'sentence'),
+				'count'       => 0,
+				'bulk_action' => array_merge($status_bulk_actions, $delete_bulk_action),
+			];
+		}
+	}
+
+
+	/**
+	 * @throws EE_Error
+	 */
+	protected function _ee_default_messages_overview_list_table()
+	{
+		$this->_admin_page_title = esc_html__('Default Message Templates', 'event_espresso');
+		$this->display_admin_list_table_page_with_no_sidebar();
+	}
+
+
+	/**
+	 * @throws EE_Error
+	 * @throws ReflectionException
+	 */
+	protected function _message_queue_list_table()
+	{
+		$this->_search_btn_label                   = esc_html__('Message Activity', 'event_espresso');
+		$this->_template_args['per_column']        = 6;
+		$this->_template_args['after_list_table']  = $this->_display_legend($this->_message_legend_items());
+		$message_results = trim(EEM_Message::instance()->get_pretty_label_for_results());
+		$this->_template_args['before_list_table'] = ! empty($message_results) ? "<h3>{$message_results}</h3>" : '';
+		$this->display_admin_list_table_page_with_no_sidebar();
+	}
+
+
+	/**
+	 * @throws EE_Error
+	 */
+	protected function _message_legend_items()
+	{
+
+		$action_css_classes = EEH_MSG_Template::get_message_action_icons();
+		$action_items       = [];
+
+		foreach ($action_css_classes as $action_item => $action_details) {
+			if ($action_item === 'see_notifications_for') {
+				continue;
+			}
+			$action_items[ $action_item ] = [
+				'class' => $action_details['css_class'],
+				'desc'  => $action_details['label'],
+			];
+		}
+
+		/** @var array $status_items status legend setup */
+		$status_items = [
+			'sent_status'                => [
+				'class' => 'ee-status-legend ee-status-bg--' . EEM_Message::status_sent,
+				'desc'  => EEH_Template::pretty_status(EEM_Message::status_sent, false, 'sentence'),
+			],
+			'idle_status'                => [
+				'class' => 'ee-status-legend ee-status-bg--' . EEM_Message::status_idle,
+				'desc'  => EEH_Template::pretty_status(EEM_Message::status_idle, false, 'sentence'),
+			],
+			'failed_status'              => [
+				'class' => 'ee-status-legend ee-status-bg--' . EEM_Message::status_failed,
+				'desc'  => EEH_Template::pretty_status(EEM_Message::status_failed, false, 'sentence'),
+			],
+			'messenger_executing_status' => [
+				'class' => 'ee-status-legend ee-status-bg--' . EEM_Message::status_messenger_executing,
+				'desc'  => EEH_Template::pretty_status(EEM_Message::status_messenger_executing, false, 'sentence'),
+			],
+			'resend_status'              => [
+				'class' => 'ee-status-legend ee-status-bg--' . EEM_Message::status_resend,
+				'desc'  => EEH_Template::pretty_status(EEM_Message::status_resend, false, 'sentence'),
+			],
+			'incomplete_status'          => [
+				'class' => 'ee-status-legend ee-status-bg--' . EEM_Message::status_incomplete,
+				'desc'  => EEH_Template::pretty_status(EEM_Message::status_incomplete, false, 'sentence'),
+			],
+			'retry_status'               => [
+				'class' => 'ee-status-legend ee-status-bg--' . EEM_Message::status_retry,
+				'desc'  => EEH_Template::pretty_status(EEM_Message::status_retry, false, 'sentence'),
+			],
+		];
+		if (EEM_Message::debug()) {
+			$status_items['debug_only_status'] = [
+				'class' => 'ee-status-legend ee-status-bg--' . EEM_Message::status_debug_only,
+				'desc'  => EEH_Template::pretty_status(EEM_Message::status_debug_only, false, 'sentence'),
+			];
+		}
+
+		return array_merge($action_items, $status_items);
+	}
+
+
+	/**
+	 * @throws EE_Error
+	 */
+	protected function _custom_mtps_preview()
+	{
+		$this->_admin_page_title              = esc_html__('Custom Message Templates (Preview)', 'event_espresso');
+		$this->_template_args['preview_img']  = '<img src="' . EE_MSG_ASSETS_URL . 'images/custom_mtps_preview.png"'
+												. ' alt="' . esc_attr__(
+													'Preview Custom Message Templates screenshot',
+													'event_espresso'
+												) . '" />';
+		$this->_template_args['preview_text'] = '<strong>'
+												. esc_html__(
+													'Custom Message Templates is a feature that is only available in the premium version of Event Espresso 4 which is available with a support license purchase on EventEspresso.com. With the Custom Message Templates feature, you are able to create custom message templates and assign them on a per-event basis.',
+													'event_espresso'
+												)
+												. '</strong>';
+
+		$this->display_admin_caf_preview_page('custom_message_types', false);
+	}
+
+
+	/**
+	 * get_message_templates
+	 * This gets all the message templates for listing on the overview list.
+	 *
+	 * @access public
+	 * @param int    $per_page the amount of templates groups to show per page
+	 * @param string $type     the current _view we're getting templates for
+	 * @param bool   $count    return count?
+	 * @param bool   $all      disregard any paging info (get all data);
+	 * @param bool   $global   whether to return just global (true) or custom templates (false)
+	 * @return array
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 */
+	public function get_message_templates(
+		$per_page = 10,
+		$type = 'in_use',
+		$count = false,
+		$all = false,
+		$global = true
+	) {
+		$orderby = $this->request->getRequestParam('orderby', 'GRP_ID');
+		$this->request->setRequestParam('orderby', $orderby);
+
+		$order        = $this->request->getRequestParam('order', 'ASC');
+		$current_page = $this->request->getRequestParam('paged', 1, 'int');
+		$per_page     = $this->request->getRequestParam('perpage', $per_page, 'int');
+
+		$offset = ($current_page - 1) * $per_page;
+		$limit  = $all ? null : [$offset, $per_page];
+
+		// options will match what is in the _views array property
+		return $type === 'in_use'
+			? $this->getMtgModel()->get_all_active_message_templates(
+				$orderby,
+				$order,
+				$limit,
+				$count,
+				$global,
+				true
+			)
+			: $this->getMtgModel()->get_all_trashed_grouped_message_templates(
+				$orderby,
+				$order,
+				$limit,
+				$count,
+				$global
+			);
+	}
+
+
+	/**
+	 * filters etc might need a list of installed message_types
+	 *
+	 * @return array an array of message type objects
+	 */
+	public function get_installed_message_types()
+	{
+		$installed_message_types = $this->_message_resource_manager->installed_message_types();
+		$installed               = [];
+
+		foreach ($installed_message_types as $message_type) {
+			$installed[ $message_type->name ] = $message_type;
+		}
+
+		return $installed;
+	}
+
+
+	/**
+	 * This is used when creating a custom template. All Custom Templates start based off another template.
+	 *
+	 * @param string $message_type
+	 * @param string $messenger
+	 * @param string $GRP_ID
+	 *
+	 * @throws EE_error
+	 * @throws ReflectionException
+	 */
+	public function add_message_template($message_type = '', $messenger = '', $GRP_ID = '')
+	{
+		// set values override any request data
+		$message_type = ! empty($message_type) ? $message_type : $this->_active_message_type_name;
+		$messenger    = ! empty($messenger) ? $messenger : $this->_active_messenger_name;
+		$GRP_ID       = ! empty($GRP_ID) ? $GRP_ID : $this->request->getRequestParam('GRP_ID', 0, 'int');
+
+		// we need messenger and message type.  They should be coming from the event editor. If not here then return error
+		if (empty($message_type) || empty($messenger)) {
+			throw new EE_Error(
+				esc_html__(
+					'Sorry, but we can\'t create new templates because we\'re missing the messenger or message type',
+					'event_espresso'
+				)
+			);
+		}
+
+		// we need the GRP_ID for the template being used as the base for the new template
+		if (empty($GRP_ID)) {
+			throw new EE_Error(
+				esc_html__(
+					'In order to create a custom message template the GRP_ID of the template being used as a base is needed',
+					'event_espresso'
+				)
+			);
+		}
+
+		// let's just make sure the template gets generated!
+
+		// we need to reassign some variables for what the insert is expecting
+		$this->request->setRequestParam('MTP_messenger', $messenger);
+		$this->request->setRequestParam('MTP_message_type', $message_type);
+		$this->request->setRequestParam('GRP_ID', $GRP_ID);
+
+		$this->_insert_or_update_message_template(true);
+	}
+
+
+	/**
+	 * @param string $message_type     message type slug
+	 * @param string $messenger        messenger slug
+	 * @param int    $GRP_ID           GRP_ID for the related message template group this new template will be based
+	 *                                 off of.
+	 * @throws EE_error
+	 * @throws ReflectionException
+	 * @deprecated 4.10.29.p
+	 */
+	protected function _add_message_template($message_type, $messenger, $GRP_ID)
+	{
+		$this->add_message_template($message_type, $messenger, $GRP_ID);
+	}
+
+
+	/**
+	 * _edit_message_template
+	 *
+	 * @access protected
+	 * @return void
+	 * @throws InvalidIdentifierException
+	 * @throws DomainException
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws ReflectionException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 */
+	protected function _edit_message_template()
+	{
+		do_action('AHEE_log', __FILE__, __FUNCTION__, '');
+		$template_fields = '';
+		$sidebar_fields  = '';
+		// we filter the tinyMCE settings to remove the validation since message templates by their nature will not have
+		// valid html in the templates.
+		add_filter('tiny_mce_before_init', [$this, 'filter_tinymce_init'], 10, 2);
+
+		$GRP_ID = $this->request->getRequestParam('id', 0, 'int');
+		$EVT_ID = $this->request->getRequestParam('evt_id', 0, 'int');
+
+		$this->_set_shortcodes(); // this also sets the _message_template property.
+		$message_template_group = $this->_message_template_group;
+		$c_label                = $message_template_group->context_label();
+		$c_config               = $message_template_group->contexts_config();
+
+		reset($c_config);
+		$context = $this->request->getRequestParam('context', key($c_config));
+		$context = strtolower($context);
+
+		$action = empty($GRP_ID) ? 'insert_message_template' : 'update_message_template';
+
+		$edit_message_template_form_url = add_query_arg(
+			['action' => $action, 'noheader' => true],
+			EE_MSG_ADMIN_URL
+		);
+
+		// set active messenger for this view
+		$this->_active_messenger         = $this->_message_resource_manager->get_active_messenger(
+			$message_template_group->messenger()
+		);
+		$this->_active_message_type_name = $message_template_group->message_type();
+
+
+		// Do we have any validation errors?
+		$validators = $this->_get_transient();
+		$v_fields   = ! empty($validators) ? array_keys($validators) : [];
+
+
+		// we need to assemble the title from Various details
+		$context_label = sprintf(
+			esc_html__('(%s %s)', 'event_espresso'),
+			$c_config[ $context ]['label'],
+			ucwords($c_label['label'])
+		);
+
+		$title = sprintf(
+			esc_html__(' %s %s Template %s', 'event_espresso'),
+			ucwords($message_template_group->messenger_obj()->label['singular']),
+			ucwords($message_template_group->message_type_obj()->label['singular']),
+			$context_label
+		);
+
+		$this->_template_args['GRP_ID']           = $GRP_ID;
+		$this->_template_args['message_template'] = $message_template_group;
+		$this->_template_args['is_extra_fields']  = false;
+
+
+		// let's get EEH_MSG_Template so we can get template form fields
+		$template_field_structure = EEH_MSG_Template::get_fields(
+			$message_template_group->messenger(),
+			$message_template_group->message_type(),
+			$context
+		);
+
+		if (! $template_field_structure) {
+			$template_field_structure = false;
+			$template_fields          = esc_html__(
+				'There was an error in assembling the fields for this display (you should see an error message)',
+				'event_espresso'
+			);
+		}
+
+
+		$message_templates = $message_template_group->context_templates();
+
+
+		// if we have the extra key.. then we need to remove the content index from the template_field_structure as it
+		// will get handled in the "extra" array.
+		if (is_array($template_field_structure[ $context ]) && isset($template_field_structure[ $context ]['extra'])) {
+			foreach ($template_field_structure[ $context ]['extra'] as $reference_field => $new_fields) {
+				unset($template_field_structure[ $context ][ $reference_field ]);
+			}
+		}
+
+		// let's loop through the template_field_structure and actually assemble the input fields!
+		if (! empty($template_field_structure)) {
+			foreach ($template_field_structure[ $context ] as $template_field => $field_setup_array) {
+				// if this is an 'extra' template field then we need to remove any existing fields that are keyed up in
+				// the extra array and reset them.
+				if ($template_field === 'extra') {
+					$this->_template_args['is_extra_fields'] = true;
+					foreach ($field_setup_array as $reference_field => $new_fields_array) {
+						$message_template = $message_templates[ $context ][ $reference_field ];
+						$content          = $message_template instanceof EE_Message_Template
+							? $message_template->get('MTP_content')
+							: '';
+						foreach ($new_fields_array as $extra_field => $extra_array) {
+							// let's verify if we need this extra field via the shortcodes parameter.
+							$continue = false;
+							if (isset($extra_array['shortcodes_required'])) {
+								foreach ((array) $extra_array['shortcodes_required'] as $shortcode) {
+									if (! array_key_exists($shortcode, $this->_shortcodes)) {
+										$continue = true;
+									}
+								}
+								if ($continue) {
+									continue;
+								}
+							}
+
+							$field_id = $reference_field . '-' . $extra_field . '-content';
+
+							$template_form_fields[ $field_id ]         = $extra_array;
+							$template_form_fields[ $field_id ]['name'] = 'MTP_template_fields['
+																		 . $reference_field
+																		 . '][content]['
+																		 . $extra_field . ']';
+							$css_class                                 = $extra_array['css_class'] ?? '';
+
+							$template_form_fields[ $field_id ]['css_class'] = ! empty($v_fields)
+																			  && in_array($extra_field, $v_fields, true)
+																			  && (
+																				  is_array($validators[ $extra_field ])
+																				  && isset($validators[ $extra_field ]['msg'])
+																			  )
+								? 'validate-error ' . $css_class
+								: $css_class;
+
+							$template_form_fields[ $field_id ]['value'] = ! empty($message_templates)
+																		  && isset($content[ $extra_field ])
+								? $content[ $extra_field ]
+								: '';
+
+							// do we have a validation error?  if we do then let's use that value instead
+							$template_form_fields[ $field_id ]['value'] = isset($validators[ $extra_field ])
+								? $validators[ $extra_field ]['value']
+								: $template_form_fields[ $field_id ]['value'];
+
+
+							$template_form_fields[ $field_id ]['db-col'] = 'MTP_content';
+
+							// shortcode selector
+							$field_name_to_use                                   = $extra_field === 'main'
+								? 'content'
+								: $extra_field;
+							$template_form_fields[ $field_id ]['append_content'] = $this->_get_shortcode_selector(
+								$field_name_to_use,
+								$field_id
+							);
+						}
+						$template_field_MTP_id           = $reference_field . '-MTP_ID';
+						$template_field_template_name_id = $reference_field . '-name';
+
+						$template_form_fields[ $template_field_MTP_id ] = [
+							'name'       => 'MTP_template_fields[' . $reference_field . '][MTP_ID]',
+							'label'      => null,
+							'input'      => 'hidden',
+							'type'       => 'int',
+							'required'   => false,
+							'validation' => false,
+							'value'      => ! empty($message_templates) ? $message_template->ID() : '',
+							'css_class'  => '',
+							'format'     => '%d',
+							'db-col'     => 'MTP_ID',
+						];
+
+						$template_form_fields[ $template_field_template_name_id ] = [
+							'name'       => 'MTP_template_fields[' . $reference_field . '][name]',
+							'label'      => null,
+							'input'      => 'hidden',
+							'type'       => 'string',
+							'required'   => false,
+							'validation' => true,
+							'value'      => $reference_field,
+							'css_class'  => '',
+							'format'     => '%s',
+							'db-col'     => 'MTP_template_field',
+						];
+					}
+					continue; // skip the next stuff, we got the necessary fields here for this dataset.
+				} else {
+					$field_id                                   = $template_field . '-content';
+					$template_form_fields[ $field_id ]          = $field_setup_array;
+					$template_form_fields[ $field_id ]['name']  =
+						'MTP_template_fields[' . $template_field . '][content]';
+					$message_template                           = $message_templates[ $context ][ $template_field ]
+																  ?? null;
+					$template_form_fields[ $field_id ]['value'] = ! empty($message_templates)
+																  && is_array($message_templates[ $context ])
+																  && $message_template instanceof EE_Message_Template
+						? $message_template->get('MTP_content')
+						: '';
+
+					// do we have a validator error for this field?  if we do then we'll use that value instead
+					$template_form_fields[ $field_id ]['value'] = isset($validators[ $template_field ])
+						? $validators[ $template_field ]['value']
+						: $template_form_fields[ $field_id ]['value'];
+
+
+					$template_form_fields[ $field_id ]['db-col']    = 'MTP_content';
+					$css_class                                      = $field_setup_array['css_class'] ?? '';
+					$template_form_fields[ $field_id ]['css_class'] = ! empty($v_fields)
+																	  && in_array($template_field, $v_fields, true)
+																	  && isset($validators[ $template_field ]['msg'])
+						? 'validate-error ' . $css_class
+						: $css_class;
+
+					// shortcode selector
+					$template_form_fields[ $field_id ]['append_content'] = $this->_get_shortcode_selector(
+						$template_field,
+						$field_id
+					);
+				}
+
+				// k took care of content field(s) now let's take care of others.
+
+				$template_field_MTP_id                 = $template_field . '-MTP_ID';
+				$template_field_field_template_name_id = $template_field . '-name';
+
+				// foreach template field there are actually two form fields created
+				$template_form_fields[ $template_field_MTP_id ] = [
+					'name'       => 'MTP_template_fields[' . $template_field . '][MTP_ID]',
+					'label'      => null,
+					'input'      => 'hidden',
+					'type'       => 'int',
+					'required'   => false,
+					'validation' => true,
+					'value'      => $message_template instanceof EE_Message_Template ? $message_template->ID() : '',
+					'css_class'  => '',
+					'format'     => '%d',
+					'db-col'     => 'MTP_ID',
+				];
+
+				$template_form_fields[ $template_field_field_template_name_id ] = [
+					'name'       => 'MTP_template_fields[' . $template_field . '][name]',
+					'label'      => null,
+					'input'      => 'hidden',
+					'type'       => 'string',
+					'required'   => false,
+					'validation' => true,
+					'value'      => $template_field,
+					'css_class'  => '',
+					'format'     => '%s',
+					'db-col'     => 'MTP_template_field',
+				];
+			}
+
+			// add other fields
+			$template_form_fields['ee-msg-current-context'] = [
+				'name'       => 'MTP_context',
+				'label'      => null,
+				'input'      => 'hidden',
+				'type'       => 'string',
+				'required'   => false,
+				'validation' => true,
+				'value'      => $context,
+				'css_class'  => '',
+				'format'     => '%s',
+				'db-col'     => 'MTP_context',
+			];
+
+			$template_form_fields['ee-msg-grp-id'] = [
+				'name'       => 'GRP_ID',
+				'label'      => null,
+				'input'      => 'hidden',
+				'type'       => 'int',
+				'required'   => false,
+				'validation' => true,
+				'value'      => $GRP_ID,
+				'css_class'  => '',
+				'format'     => '%d',
+				'db-col'     => 'GRP_ID',
+			];
+
+			$template_form_fields['ee-msg-messenger'] = [
+				'name'       => 'MTP_messenger',
+				'label'      => null,
+				'input'      => 'hidden',
+				'type'       => 'string',
+				'required'   => false,
+				'validation' => true,
+				'value'      => $message_template_group->messenger(),
+				'css_class'  => '',
+				'format'     => '%s',
+				'db-col'     => 'MTP_messenger',
+			];
+
+			$template_form_fields['ee-msg-message-type'] = [
+				'name'       => 'MTP_message_type',
+				'label'      => null,
+				'input'      => 'hidden',
+				'type'       => 'string',
+				'required'   => false,
+				'validation' => true,
+				'value'      => $message_template_group->message_type(),
+				'css_class'  => '',
+				'format'     => '%s',
+				'db-col'     => 'MTP_message_type',
+			];
+
+			$sidebar_form_fields['ee-msg-is-global'] = [
+				'name'       => 'MTP_is_global',
+				'label'      => esc_html__('Global Template', 'event_espresso'),
+				'input'      => 'hidden',
+				'type'       => 'int',
+				'required'   => false,
+				'validation' => true,
+				'value'      => $message_template_group->get('MTP_is_global'),
+				'css_class'  => '',
+				'format'     => '%d',
+				'db-col'     => 'MTP_is_global',
+			];
+
+			$sidebar_form_fields['ee-msg-is-override'] = [
+				'name'       => 'MTP_is_override',
+				'label'      => esc_html__('Override all custom', 'event_espresso'),
+				'input'      => $message_template_group->is_global() ? 'checkbox' : 'hidden',
+				'type'       => 'int',
+				'required'   => false,
+				'validation' => true,
+				'value'      => $message_template_group->get('MTP_is_override'),
+				'css_class'  => '',
+				'format'     => '%d',
+				'db-col'     => 'MTP_is_override',
+			];
+
+			$sidebar_form_fields['ee-msg-is-active'] = [
+				'name'       => 'MTP_is_active',
+				'label'      => esc_html__('Active Template', 'event_espresso'),
+				'input'      => 'hidden',
+				'type'       => 'int',
+				'required'   => false,
+				'validation' => true,
+				'value'      => $message_template_group->is_active(),
+				'css_class'  => '',
+				'format'     => '%d',
+				'db-col'     => 'MTP_is_active',
+			];
+
+			$sidebar_form_fields['ee-msg-deleted'] = [
+				'name'       => 'MTP_deleted',
+				'label'      => null,
+				'input'      => 'hidden',
+				'type'       => 'int',
+				'required'   => false,
+				'validation' => true,
+				'value'      => $message_template_group->get('MTP_deleted'),
+				'css_class'  => '',
+				'format'     => '%d',
+				'db-col'     => 'MTP_deleted',
+			];
+			$sidebar_form_fields['ee-msg-author']  = [
+				'name'       => 'MTP_user_id',
+				'label'      => esc_html__('Author', 'event_espresso'),
+				'input'      => 'hidden',
+				'type'       => 'int',
+				'required'   => false,
+				'validation' => false,
+				'value'      => $message_template_group->user(),
+				'format'     => '%d',
+				'db-col'     => 'MTP_user_id',
+			];
+
+			$sidebar_form_fields['ee-msg-route'] = [
+				'name'  => 'action',
+				'input' => 'hidden',
+				'type'  => 'string',
+				'value' => $action,
+			];
+
+			$sidebar_form_fields['ee-msg-id']        = [
+				'name'  => 'id',
+				'input' => 'hidden',
+				'type'  => 'int',
+				'value' => $GRP_ID,
+			];
+			$sidebar_form_fields['ee-msg-evt-nonce'] = [
+				'name'  => $action . '_nonce',
+				'input' => 'hidden',
+				'type'  => 'string',
+				'value' => wp_create_nonce($action . '_nonce'),
+			];
+
+			$template_switch = $this->request->getRequestParam('template_switch');
+			if ($template_switch) {
+				$sidebar_form_fields['ee-msg-template-switch'] = [
+					'name'  => 'template_switch',
+					'input' => 'hidden',
+					'type'  => 'int',
+					'value' => 1,
+				];
+			}
+
+
+			$template_fields = $this->_generate_admin_form_fields($template_form_fields);
+			$sidebar_fields  = $this->_generate_admin_form_fields($sidebar_form_fields);
+		} //end if ( !empty($template_field_structure) )
+
+		// set extra content for publish box
+		$this->_template_args['publish_box_extra_content'] = $sidebar_fields;
+		$this->_set_publish_post_box_vars(
+			'id',
+			$GRP_ID,
+			false,
+			add_query_arg(
+				['action' => 'global_mtps'],
+				$this->_admin_base_url
+			)
+		);
+
+		// add preview button
+		$preview_url    = parent::add_query_args_and_nonce(
+			[
+				'message_type' => $message_template_group->message_type(),
+				'messenger'    => $message_template_group->messenger(),
+				'context'      => $context,
+				'GRP_ID'       => $GRP_ID,
+				'evt_id'       => $EVT_ID ?: false,
+				'action'       => 'preview_message',
+			],
+			$this->_admin_base_url
+		);
+		$preview_button = '<a href="' . $preview_url . '" class="button--secondary messages-preview-button">'
+						  . esc_html__('Preview', 'event_espresso')
+						  . '</a>';
+
+
+		// setup context switcher
+		$this->_set_context_switcher(
+			$message_template_group,
+			[
+				'page'    => 'espresso_messages',
+				'action'  => 'edit_message_template',
+				'id'      => $GRP_ID,
+				'evt_id'  => $EVT_ID,
+				'context' => $context,
+				'extra'   => $preview_button,
+			]
+		);
+
+
+		// main box
+		$this->_template_args['template_fields']                         = $template_fields;
+		$this->_template_args['sidebar_box_id']                          = 'details';
+		$this->_template_args['action']                                  = $action;
+		$this->_template_args['context']                                 = $context;
+		$this->_template_args['edit_message_template_form_url']          = $edit_message_template_form_url;
+		$this->_template_args['learn_more_about_message_templates_link'] =
+			$this->_learn_more_about_message_templates_link();
+
+
+		$this->_template_args['before_admin_page_content'] = '<div class="ee-msg-admin-header">';
+		$this->_template_args['before_admin_page_content'] .= $this->add_active_context_element(
+			$message_template_group,
+			$context,
+			$context_label
+		);
+		$this->_template_args['before_admin_page_content'] .= $this->add_context_switcher();
+		$this->_template_args['before_admin_page_content'] .= '</div>';
+		$this->_template_args['before_admin_page_content'] .= $this->_add_form_element_before();
+		$this->_template_args['after_admin_page_content']  = $this->_add_form_element_after();
+
+		$this->_template_path = $this->_template_args['GRP_ID']
+			? EE_MSG_TEMPLATE_PATH . 'ee_msg_details_main_edit_meta_box.template.php'
+			: EE_MSG_TEMPLATE_PATH . 'ee_msg_details_main_add_meta_box.template.php';
+
+		// send along EE_Message_Template_Group object for further template use.
+		$this->_template_args['MTP'] = $message_template_group;
+
+		$this->_template_args['admin_page_content'] = EEH_Template::display_template(
+			$this->_template_path,
+			$this->_template_args,
+			true
+		);
+
+
+		// finally, let's set the admin_page title
+		$this->_admin_page_title = sprintf(esc_html__('Editing %s', 'event_espresso'), $title);
+
+
+		// we need to take care of setting the shortcodes property for use elsewhere.
+		$this->_set_shortcodes();
+
+
+		// final template wrapper
+		$this->display_admin_page_with_sidebar();
+	}
+
+
+	public function filter_tinymce_init($mceInit, $editor_id)
+	{
+		return $mceInit;
+	}
+
+
+	public function add_context_switcher()
+	{
+		return $this->_context_switcher;
+	}
+
+
+	/**
+	 * Adds the activation/deactivation toggle for the message template context.
+	 *
+	 * @param EE_Message_Template_Group $message_template_group
+	 * @param string                    $context
+	 * @param string                    $context_label
+	 * @return string
+	 * @throws DomainException
+	 * @throws EE_Error
+	 * @throws InvalidIdentifierException
+	 * @throws ReflectionException
+	 */
+	protected function add_active_context_element(
+		EE_Message_Template_Group $message_template_group,
+		$context,
+		$context_label
+	) {
+		$template_args = [
+			'context'                   => $context,
+			'nonce'                     => wp_create_nonce('activate_' . $context . '_toggle_nonce'),
+			'is_active'                 => $message_template_group->is_context_active($context),
+			'on_off_action'             => $message_template_group->is_context_active($context)
+				? 'context-off'
+				: 'context-on',
+			'context_label'             => str_replace(['(', ')'], '', $context_label),
+			'message_template_group_id' => $message_template_group->ID(),
+		];
+		return EEH_Template::display_template(
+			EE_MSG_TEMPLATE_PATH . 'ee_msg_editor_active_context_element.template.php',
+			$template_args,
+			true
+		);
+	}
+
+
+	/**
+	 * Ajax callback for `toggle_context_template` ajax action.
+	 * Handles toggling the message context on or off.
+	 *
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidIdentifierException
+	 * @throws InvalidInterfaceException
+	 */
+	public function toggle_context_template()
+	{
+		$success = true;
+		// check for required data
+		if (
+			! (
+				$this->request->requestParamIsSet('message_template_group_id')
+				&& $this->request->requestParamIsSet('context')
+				&& $this->request->requestParamIsSet('status')
+			)
+		) {
+			EE_Error::add_error(
+				esc_html__('Required data for doing this action is not available.', 'event_espresso'),
+				__FILE__,
+				__FUNCTION__,
+				__LINE__
+			);
+			$success = false;
+		}
+
+		$nonce   = $this->request->getRequestParam('toggle_context_nonce', '');
+		$context = $this->request->getRequestParam('context', '');
+		$status  = $this->request->getRequestParam('status', '');
+
+		$this->_verify_nonce($nonce, "activate_{$context}_toggle_nonce");
+
+		if ($status !== 'off' && $status !== 'on') {
+			EE_Error::add_error(
+				sprintf(
+					esc_html__('The given status (%s) is not valid. Must be "off" or "on"', 'event_espresso'),
+					$status
+				),
+				__FILE__,
+				__FUNCTION__,
+				__LINE__
+			);
+			$success = false;
+		}
+		$message_template_group_id = $this->request->getRequestParam('message_template_group_id', 0, 'int');
+		$message_template_group    = $this->getMtgModel()->get_one_by_ID($message_template_group_id);
+		if (! $message_template_group instanceof EE_Message_Template_Group) {
+			EE_Error::add_error(
+				sprintf(
+					esc_html__(
+						'Unable to change the active state because the given id "%1$d" does not match a valid "%2$s"',
+						'event_espresso'
+					),
+					$message_template_group_id,
+					'EE_Message_Template_Group'
+				),
+				__FILE__,
+				__FUNCTION__,
+				__LINE__
+			);
+			$success = false;
+		}
+		if ($success) {
+			$success = $status === 'off'
+				? $message_template_group->deactivate_context($context)
+				: $message_template_group->activate_context($context);
+		}
+		$this->_template_args['success'] = $success;
+		$this->_return_json();
+	}
+
+
+	public function _add_form_element_before()
+	{
+		return '<form method="post" action="'
+			   . $this->_template_args['edit_message_template_form_url']
+			   . '" id="ee-msg-edit-frm">';
+	}
+
+
+	public function _add_form_element_after()
+	{
+		return '</form>';
+	}
+
+
+	/**
+	 * This executes switching the template pack for a message template.
+	 *
+	 * @throws EE_Error
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidArgumentException
+	 * @throws ReflectionException
+	 * @since 4.5.0
+	 */
+	public function switch_template_pack()
+	{
+
+		$GRP_ID        = $this->request->getRequestParam('GRP_ID', 0, 'int');
+		$template_pack = $this->request->getRequestParam('template_pack', '');
+
+		// verify we have needed values.
+		if (empty($GRP_ID) || empty($template_pack)) {
+			$this->_template_args['error'] = true;
+			EE_Error::add_error(
+				esc_html__('The required date for switching templates is not available.', 'event_espresso'),
+				__FILE__,
+				__FUNCTION__,
+				__LINE__
+			);
+		} else {
+			// get template, set the new template_pack and then reset to default
+			/** @var EE_Message_Template_Group $message_template_group */
+			$message_template_group = $this->getMtgModel()->get_one_by_ID($GRP_ID);
+
+			$message_template_group->set_template_pack_name($template_pack);
+			$this->request->setRequestParam('msgr', $message_template_group->messenger());
+			$this->request->setRequestParam('mt', $message_template_group->message_type());
+
+			$query_args = $this->_reset_to_default_template();
+
+			if (empty($query_args['id'])) {
+				EE_Error::add_error(
+					esc_html__(
+						'Something went wrong with switching the template pack. Please try again or contact EE support',
+						'event_espresso'
+					),
+					__FILE__,
+					__FUNCTION__,
+					__LINE__
+				);
+				$this->_template_args['error'] = true;
+			} else {
+				$template_label       = $message_template_group->get_template_pack()->label;
+				$template_pack_labels = $message_template_group->messenger_obj()->get_supports_labels();
+				EE_Error::add_success(
+					sprintf(
+						esc_html__(
+							'This message template has been successfully switched to use the %1$s %2$s.  Please wait while the page reloads with your new template.',
+							'event_espresso'
+						),
+						$template_label,
+						$template_pack_labels->template_pack
+					)
+				);
+				// generate the redirect url for js.
+				$url = self::add_query_args_and_nonce($query_args, $this->_admin_base_url);
+
+				$this->_template_args['data']['redirect_url'] = $url;
+				$this->_template_args['success']              = true;
+			}
+
+			$this->_return_json();
+		}
+	}
+
+
+	/**
+	 * This handles resetting the template for the given messenger/message_type so that users can start from scratch if
+	 * they want.
+	 *
+	 * @access protected
+	 * @return array|void
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 * @throws ReflectionException
+	 */
+	protected function _reset_to_default_template()
+	{
+		$templates    = [];
+		$GRP_ID       = $this->request->getRequestParam('GRP_ID', 0, 'int');
+		$messenger    = $this->request->getRequestParam('msgr');
+		$message_type = $this->request->getRequestParam('mt');
+		// we need to make sure we've got the info we need.
+		if (! ($GRP_ID && $messenger && $message_type)) {
+			EE_Error::add_error(
+				esc_html__(
+					'In order to reset the template to its default we require the messenger, message type, and message template GRP_ID to know what is being reset.  At least one of these is missing.',
+					'event_espresso'
+				),
+				__FILE__,
+				__FUNCTION__,
+				__LINE__
+			);
+		}
+
+		// all templates will be reset to whatever the defaults are
+		// for the global template matching the messenger and message type.
+		$success = ! empty($GRP_ID);
+
+		if ($success) {
+			// let's first determine if the incoming template is a global template,
+			// if it isn't then we need to get the global template matching messenger and message type.
+			// $MTPG = $this->getMtgModel()->get_one_by_ID( $GRP_ID );
+
+
+			// note this is ONLY deleting the template fields (Message Template rows) NOT the message template group.
+			$success = $this->_delete_mtp_permanently($GRP_ID, false);
+
+			if ($success) {
+				// if successfully deleted, lets generate the new ones.
+				// Note. We set GLOBAL to true, because resets on ANY template
+				// will use the related global template defaults for regeneration.
+				// This means that if a custom template is reset it resets to whatever the related global template is.
+				// HOWEVER, we DO keep the template pack and template variation set
+				// for the current custom template when resetting.
+				$templates = $this->_generate_new_templates($messenger, $message_type, $GRP_ID, true);
+			}
+		}
+
+		// any error messages?
+		if (! $success) {
+			EE_Error::add_error(
+				esc_html__(
+					'Something went wrong with deleting existing templates. Unable to reset to default',
+					'event_espresso'
+				),
+				__FILE__,
+				__FUNCTION__,
+				__LINE__
+			);
+		}
+
+		// all good, let's add a success message!
+		if ($success && ! empty($templates)) {
+			// the info for the template we generated is the first element in the returned array
+			EE_Error::overwrite_success();
+			EE_Error::add_success(esc_html__('Templates have been reset to defaults.', 'event_espresso'));
+		}
+
+
+		$query_args = [
+			'id'      => isset($templates['GRP_ID']) ? $templates['GRP_ID'] : null,
+			'context' => isset($templates['MTP_context']) ? $templates['MTP_context'] : null,
+			'action'  => isset($templates['GRP_ID']) ? 'edit_message_template' : 'global_mtps',
+		];
+
+		// if called via ajax then we return query args otherwise redirect
+		if ($this->request->isAjax()) {
+			return $query_args;
+		}
+		$this->_redirect_after_action(false, '', '', $query_args, true);
+	}
+
+
+	/**
+	 * Retrieve and set the message preview for display.
+	 *
+	 * @param bool $send if TRUE then we are doing an actual TEST send with the results of the preview.
+	 * @return string
+	 * @throws ReflectionException
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 */
+	public function _preview_message($send = false)
+	{
+		// first make sure we've got the necessary parameters
+		$GRP_ID = $this->request->getRequestParam('GRP_ID', 0, 'int');
+		if (! ($GRP_ID && $this->_active_messenger_name && $this->_active_message_type_name)) {
+			EE_Error::add_error(
+				esc_html__('Missing necessary parameters for displaying preview', 'event_espresso'),
+				__FILE__,
+				__FUNCTION__,
+				__LINE__
+			);
+		}
+
+		$context = $this->request->getRequestParam('context');
+		// get the preview!
+		$preview = EED_Messages::preview_message(
+			$this->_active_message_type_name,
+			$context,
+			$this->_active_messenger_name,
+			$send
+		);
+
+		if ($send) {
+			return $preview;
+		}
+
+		// if we have an evt_id set on the request, use it.
+		$EVT_ID = $this->request->getRequestParam('evt_id', 0, 'int');
+
+		// let's add a button to go back to the edit view
+		$query_args             = [
+			'id'      => $GRP_ID,
+			'evt_id'  => $EVT_ID,
+			'context' => $context,
+			'action'  => 'edit_message_template',
+		];
+		$go_back_url            = parent::add_query_args_and_nonce($query_args, $this->_admin_base_url);
+		$preview_button         = '<a href="'
+								  . $go_back_url
+								  . '" class="button--secondary messages-preview-go-back-button">'
+								  . esc_html__('Go Back to Edit', 'event_espresso')
+								  . '</a>';
+		$message_types          = $this->get_installed_message_types();
+		$active_messenger       = $this->_message_resource_manager->get_active_messenger($this->_active_messenger_name);
+		$active_messenger_label = $active_messenger instanceof EE_messenger
+			? ucwords($active_messenger->label['singular'])
+			: esc_html__('Unknown Messenger', 'event_espresso');
+		// let's provide a helpful title for context
+		$preview_title = sprintf(
+			esc_html__('Viewing Preview for %s %s Message Template', 'event_espresso'),
+			$active_messenger_label,
+			ucwords($message_types[ $this->_active_message_type_name ]->label['singular'])
+		);
+		if (empty($preview)) {
+			$this->noEventsErrorMessage();
+		}
+		// setup display of preview.
+		$this->_admin_page_title                    = $preview_title;
+		$this->_template_args['admin_page_title']   = $preview_title;
+		$this->_template_args['admin_page_content'] = $preview_button . '<br />' . $preview;
+		$this->_template_args['data']['force_json'] = true;
+
+		return '';
+	}
+
+
+	/**
+	 * Used to set an error if there are no events available for generating a preview/test send.
+	 *
+	 * @param bool $test_send Whether the error should be generated for the context of a test send.
+	 */
+	protected function noEventsErrorMessage($test_send = false)
+	{
+		$events_url = parent::add_query_args_and_nonce(
+			[
+				'action' => 'default',
+				'page'   => 'espresso_events',
+			],
+			admin_url('admin.php')
+		);
+		$message    = $test_send
+			? esc_html__(
+				'A test message could not be sent for this message template because there are no events created yet. The preview system uses actual events for generating the test message. %1$sGo see your events%2$s!',
+				'event_espresso'
+			)
+			: esc_html__(
+				'There is no preview for this message template available because there are no events created yet. The preview system uses actual events for generating the preview. %1$sGo see your events%2$s!',
+				'event_espresso'
+			);
+
+		EE_Error::add_attention(
+			sprintf(
+				$message,
+				"<a href='{$events_url}'>",
+				'</a>'
+			)
+		);
+	}
+
+
+	/**
+	 * The initial _preview_message is on a no headers route.  It will optionally call this if necessary otherwise it
+	 * gets called automatically.
+	 *
+	 * @return void
+	 * @throws EE_Error
+	 * @since 4.5.0
+	 *
+	 */
+	protected function _display_preview_message()
+	{
+		$this->display_admin_page_with_no_sidebar();
+	}
+
+
+	/**
+	 * registers metaboxes that should show up on the "edit_message_template" page
+	 *
+	 * @access protected
+	 * @return void
+	 */
+	protected function _register_edit_meta_boxes()
+	{
+		$this->addMetaBox(
+			'mtp_valid_shortcodes',
+			esc_html__('Valid Shortcodes', 'event_espresso'),
+			[$this, 'shortcode_meta_box'],
+			$this->_current_screen->id,
+			'side'
+		);
+		$this->addMetaBox(
+			'mtp_extra_actions',
+			esc_html__('Extra Actions', 'event_espresso'),
+			[$this, 'extra_actions_meta_box'],
+			$this->_current_screen->id,
+			'side',
+			'high'
+		);
+		$this->addMetaBox(
+			'mtp_templates',
+			esc_html__('Template Styles', 'event_espresso'),
+			[$this, 'template_pack_meta_box'],
+			$this->_current_screen->id,
+			'side',
+			'high'
+		);
+	}
+
+
+	/**
+	 * metabox content for all template pack and variation selection.
+	 *
+	 * @return void
+	 * @throws DomainException
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws ReflectionException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 * @since 4.5.0
+	 */
+	public function template_pack_meta_box()
+	{
+		$this->_set_message_template_group();
+
+		$tp_collection = EEH_MSG_Template::get_template_pack_collection();
+
+		$tp_select_values = [];
+
+		foreach ($tp_collection as $tp) {
+			// only include template packs that support this messenger and message type!
+			$supports = $tp->get_supports();
+			if (
+				! isset($supports[ $this->_message_template_group->messenger() ])
+				|| ! in_array(
+					$this->_message_template_group->message_type(),
+					$supports[ $this->_message_template_group->messenger() ],
+					true
+				)
+			) {
+				// not supported
+				continue;
+			}
+
+			$tp_select_values[] = [
+				'text' => $tp->label,
+				'id'   => $tp->dbref,
+			];
+		}
+
+		// if empty $tp_select_values then we make sure default is set because EVERY message type should be supported by
+		// the default template pack.  This still allows for the odd template pack to override.
+		if (empty($tp_select_values)) {
+			$tp_select_values[] = [
+				'text' => esc_html__('Default', 'event_espresso'),
+				'id'   => 'default',
+			];
+		}
+
+		// setup variation select values for the currently selected template.
+		$variations               = $this->_message_template_group->get_template_pack()->get_variations(
+			$this->_message_template_group->messenger(),
+			$this->_message_template_group->message_type()
+		);
+		$variations_select_values = [];
+		foreach ($variations as $variation => $label) {
+			$variations_select_values[] = [
+				'text' => $label,
+				'id'   => $variation,
+			];
+		}
+
+		$template_pack_labels = $this->_message_template_group->messenger_obj()->get_supports_labels();
+
+		$template_args['template_packs_selector']        = EEH_Form_Fields::select_input(
+			'MTP_template_pack',
+			$tp_select_values,
+			$this->_message_template_group->get_template_pack_name()
+		);
+		$template_args['variations_selector']            = EEH_Form_Fields::select_input(
+			'MTP_template_variation',
+			$variations_select_values,
+			$this->_message_template_group->get_template_pack_variation()
+		);
+		$template_args['template_pack_label']            = $template_pack_labels->template_pack;
+		$template_args['template_variation_label']       = $template_pack_labels->template_variation;
+		$template_args['template_pack_description']      = $template_pack_labels->template_pack_description;
+		$template_args['template_variation_description'] = $template_pack_labels->template_variation_description;
+
+		$template = EE_MSG_TEMPLATE_PATH . 'template_pack_and_variations_metabox.template.php';
+
+		EEH_Template::display_template($template, $template_args);
+	}
+
+
+	/**
+	 * This meta box holds any extra actions related to Message Templates
+	 * For now, this includes Resetting templates to defaults and sending a test email.
+	 *
+	 * @access  public
+	 * @return void
+	 * @throws EE_Error
+	 */
+	public function extra_actions_meta_box()
+	{
+		$template_form_fields = [];
+
+		$extra_args = [
+			'msgr'   => $this->_message_template_group->messenger(),
+			'mt'     => $this->_message_template_group->message_type(),
+			'GRP_ID' => $this->_message_template_group->GRP_ID(),
+		];
+		// first we need to see if there are any fields
+		$fields = $this->_message_template_group->messenger_obj()->get_test_settings_fields();
+
+		if (! empty($fields)) {
+			// yup there be fields
+			foreach ($fields as $field => $config) {
+				$field_id = $this->_message_template_group->messenger() . '_' . $field;
+				$existing = $this->_message_template_group->messenger_obj()->get_existing_test_settings();
+				$default  = isset($config['default']) ? $config['default'] : '';
+				$default  = isset($config['value']) ? $config['value'] : $default;
+
+				// if type is hidden and the value is empty
+				// something may have gone wrong so let's correct with the defaults
+				$fix                = $config['input'] === 'hidden'
+									  && isset($existing[ $field ])
+									  && empty($existing[ $field ])
+					? $default
+					: '';
+				$existing[ $field ] = isset($existing[ $field ]) && empty($fix)
+					? $existing[ $field ]
+					: $fix;
+
+				$template_form_fields[ $field_id ] = [
+					'name'       => 'test_settings_fld[' . $field . ']',
+					'label'      => $config['label'],
+					'input'      => $config['input'],
+					'type'       => $config['type'],
+					'required'   => $config['required'],
+					'validation' => $config['validation'],
+					'value'      => isset($existing[ $field ]) ? $existing[ $field ] : $default,
+					'css_class'  => $config['css_class'],
+					'options'    => isset($config['options']) ? $config['options'] : [],
+					'default'    => $default,
+					'format'     => $config['format'],
+				];
+			}
+		}
+
+		$test_settings_html = ! empty($template_form_fields)
+			? $this->_generate_admin_form_fields($template_form_fields, 'string', 'ee_tst_settings_flds')
+			: '';
+
+		// print out $test_settings_fields
+		if (! empty($test_settings_html)) {
+			$test_settings_html .= '<input type="submit" class="button--primary mtp-test-button alignright" ';
+			$test_settings_html .= 'name="test_button" value="';
+			$test_settings_html .= esc_html__('Test Send', 'event_espresso');
+			$test_settings_html .= '" /><div style="clear:both"></div>';
+		}
+
+		// and button
+		$test_settings_html .= '<div class="publishing-action alignright resetbutton">';
+		$test_settings_html .= '<p>';
+		$test_settings_html .= esc_html__('Need to reset this message type and start over?', 'event_espresso');
+		$test_settings_html .= '</p>';
+		$test_settings_html .= $this->get_action_link_or_button(
+			'reset_to_default',
+			'reset',
+			$extra_args,
+			'button--primary reset-default-button'
+		);
+		$test_settings_html .= '</div><div style="clear:both"></div>';
+		echo wp_kses($test_settings_html, AllowedTags::getWithFormTags());
+	}
+
+
+	/**
+	 * This returns the shortcode selector skeleton for a given context and field.
+	 *
+	 * @param string $field           The name of the field retrieving shortcodes for.
+	 * @param string $linked_input_id The css id of the input that the shortcodes get added to.
+	 * @return string
+	 * @throws DomainException
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws ReflectionException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 * @since 4.9.rc.000
+	 */
+	protected function _get_shortcode_selector($field, $linked_input_id)
+	{
+		$template_args = [
+			'shortcodes'      => $this->_get_shortcodes([$field]),
+			'fieldname'       => $field,
+			'linked_input_id' => $linked_input_id,
+		];
+
+		return EEH_Template::display_template(
+			EE_MSG_TEMPLATE_PATH . 'shortcode_selector_skeleton.template.php',
+			$template_args,
+			true
+		);
+	}
+
+
+	/**
+	 * This just takes care of returning the meta box content for shortcodes (only used on the edit message template
+	 * page)
+	 *
+	 * @access public
+	 * @return void
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws ReflectionException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 */
+	public function shortcode_meta_box()
+	{
+		$shortcodes = $this->_get_shortcodes([], false);
+		// just make sure the shortcodes property is set
+		// $messenger = $this->_message_template_group->messenger_obj();
+		// now let's set the content depending on the status of the shortcodes array
+		if (empty($shortcodes)) {
+			echo '<p>' . esc_html__('There are no valid shortcodes available', 'event_espresso') . '</p>';
+			return;
+		}
+		?>
         <div style="float:right; margin-top:10px">
             <?php echo wp_kses($this->_get_help_tab_link('message_template_shortcodes'), AllowedTags::getAllowedTags());
-            ?>
+			?>
         </div>
         <p class="small-text">
             <?php printf(
-                esc_html__(
-                    'You can view the shortcodes usable in your template by clicking the %s icon next to each field.',
-                    'event_espresso'
-                ),
-                '<span class="dashicons dashicons-shortcode"></span>'
-            ); ?>
+				esc_html__(
+					'You can view the shortcodes usable in your template by clicking the %s icon next to each field.',
+					'event_espresso'
+				),
+				'<span class="dashicons dashicons-shortcode"></span>'
+			); ?>
         </p>
         <?php
-    }
-
-
-    /**
-     * used to set the $_shortcodes property for when its needed elsewhere.
-     *
-     * @access protected
-     * @return void
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws ReflectionException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     */
-    protected function _set_shortcodes()
-    {
-
-        // no need to run this if the property is already set
-        if (! empty($this->_shortcodes)) {
-            return;
-        }
-
-        $this->_shortcodes = $this->_get_shortcodes();
-    }
-
-
-    /**
-     * gets all shortcodes for a given template group. (typically used by _set_shortcodes to set the $_shortcodes
-     * property)
-     *
-     * @access  protected
-     * @param array   $fields  include an array of specific field names that you want to be used to get the shortcodes
-     *                         for. Defaults to all (for the given context)
-     * @param boolean $merged  Whether to merge all the shortcodes into one list of unique shortcodes
-     * @return array Shortcodes indexed by fieldname and the an array of shortcode/label pairs OR if merged is
-     *                         true just an array of shortcode/label pairs.
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws ReflectionException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     */
-    protected function _get_shortcodes($fields = [], $merged = true)
-    {
-        $this->_set_message_template_group();
-
-        // we need the messenger and message template to retrieve the valid shortcodes array.
-        $GRP_ID = $this->request->getRequestParam('id', 0, 'int');
-        if (empty($GRP_ID)) {
-            return [];
-        }
-        $context = $this->request->getRequestParam(
-            'messenger',
-            key($this->_message_template_group->contexts_config())
-        );
-        return $this->_message_template_group->get_shortcodes($context, $fields, $merged);
-    }
-
-
-    /**
-     * This sets the _message_template property (containing the called message_template object)
-     *
-     * @access protected
-     * @return void
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws ReflectionException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     */
-    protected function _set_message_template_group()
-    {
-        // get out if this is already set.
-        if (! empty($this->_message_template_group)) {
-            return;
-        }
-
-        $GRP_ID = $this->request->getRequestParam('GRP_ID', 0, 'int');
-        $GRP_ID = $this->request->getRequestParam('id', $GRP_ID, 'int');
-
-        // let's get the message templates
-        $this->_message_template_group = ! empty($GRP_ID)
-            ? $this->getMtgModel()->get_one_by_ID($GRP_ID)
-            : $this->getMtgModel()->create_default_object();
-
-        $this->_template_pack = $this->_message_template_group->get_template_pack();
-        $this->_variation     = $this->_message_template_group->get_template_pack_variation();
-    }
-
-
-    /**
-     * sets up a context switcher for edit forms
-     *
-     * @access  protected
-     * @param EE_Message_Template_Group $template_group_object the template group object being displayed on the form
-     * @param array                     $args                  various things the context switcher needs.
-     * @throws EE_Error
-     */
-    protected function _set_context_switcher(EE_Message_Template_Group $template_group_object, $args)
-    {
-        $context_details = $template_group_object->contexts_config();
-        $context_label   = $template_group_object->context_label();
-        ob_start();
-        ?>
+	}
+
+
+	/**
+	 * used to set the $_shortcodes property for when its needed elsewhere.
+	 *
+	 * @access protected
+	 * @return void
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws ReflectionException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 */
+	protected function _set_shortcodes()
+	{
+
+		// no need to run this if the property is already set
+		if (! empty($this->_shortcodes)) {
+			return;
+		}
+
+		$this->_shortcodes = $this->_get_shortcodes();
+	}
+
+
+	/**
+	 * gets all shortcodes for a given template group. (typically used by _set_shortcodes to set the $_shortcodes
+	 * property)
+	 *
+	 * @access  protected
+	 * @param array   $fields  include an array of specific field names that you want to be used to get the shortcodes
+	 *                         for. Defaults to all (for the given context)
+	 * @param boolean $merged  Whether to merge all the shortcodes into one list of unique shortcodes
+	 * @return array Shortcodes indexed by fieldname and the an array of shortcode/label pairs OR if merged is
+	 *                         true just an array of shortcode/label pairs.
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws ReflectionException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 */
+	protected function _get_shortcodes($fields = [], $merged = true)
+	{
+		$this->_set_message_template_group();
+
+		// we need the messenger and message template to retrieve the valid shortcodes array.
+		$GRP_ID = $this->request->getRequestParam('id', 0, 'int');
+		if (empty($GRP_ID)) {
+			return [];
+		}
+		$context = $this->request->getRequestParam(
+			'messenger',
+			key($this->_message_template_group->contexts_config())
+		);
+		return $this->_message_template_group->get_shortcodes($context, $fields, $merged);
+	}
+
+
+	/**
+	 * This sets the _message_template property (containing the called message_template object)
+	 *
+	 * @access protected
+	 * @return void
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws ReflectionException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 */
+	protected function _set_message_template_group()
+	{
+		// get out if this is already set.
+		if (! empty($this->_message_template_group)) {
+			return;
+		}
+
+		$GRP_ID = $this->request->getRequestParam('GRP_ID', 0, 'int');
+		$GRP_ID = $this->request->getRequestParam('id', $GRP_ID, 'int');
+
+		// let's get the message templates
+		$this->_message_template_group = ! empty($GRP_ID)
+			? $this->getMtgModel()->get_one_by_ID($GRP_ID)
+			: $this->getMtgModel()->create_default_object();
+
+		$this->_template_pack = $this->_message_template_group->get_template_pack();
+		$this->_variation     = $this->_message_template_group->get_template_pack_variation();
+	}
+
+
+	/**
+	 * sets up a context switcher for edit forms
+	 *
+	 * @access  protected
+	 * @param EE_Message_Template_Group $template_group_object the template group object being displayed on the form
+	 * @param array                     $args                  various things the context switcher needs.
+	 * @throws EE_Error
+	 */
+	protected function _set_context_switcher(EE_Message_Template_Group $template_group_object, $args)
+	{
+		$context_details = $template_group_object->contexts_config();
+		$context_label   = $template_group_object->context_label();
+		ob_start();
+		?>
         <div class="ee-msg-switcher-container">
             <form method="get" action="<?php echo esc_url_raw(EE_MSG_ADMIN_URL); ?>" id="ee-msg-context-switcher-frm">
                 <?php
-                foreach ($args as $name => $value) {
-                    if ($name === 'context' || empty($value) || $name === 'extra') {
-                        continue;
-                    }
-                    ?>
+				foreach ($args as $name => $value) {
+					if ($name === 'context' || empty($value) || $name === 'extra') {
+						continue;
+					}
+					?>
                     <input type="hidden"
                            name="<?php echo esc_attr($name); ?>"
                            value="<?php echo esc_attr($value); ?>"
                     />
                     <?php
-                }
-                // setup nonce_url
-                wp_nonce_field($args['action'] . '_nonce', $args['action'] . '_nonce', false);
-                $id = 'ee-' . sanitize_key($context_label['label']) . '-select';
-                ?>
+				}
+				// setup nonce_url
+				wp_nonce_field($args['action'] . '_nonce', $args['action'] . '_nonce', false);
+				$id = 'ee-' . sanitize_key($context_label['label']) . '-select';
+				?>
                 <label for='<?php echo esc_attr($id); ?>' class='screen-reader-text'>
                     <?php esc_html_e('message context options', 'event_espresso'); ?>
                 </label>
                 <select id="<?php echo esc_attr($id); ?>" name="context">
                     <?php
-                    $context_templates = $template_group_object->context_templates();
-                    if (is_array($context_templates)) :
-                        foreach ($context_templates as $context => $template_fields) :
-                            $checked = ($context === $args['context']) ? 'selected' : '';
-                            ?>
+					$context_templates = $template_group_object->context_templates();
+					if (is_array($context_templates)) :
+						foreach ($context_templates as $context => $template_fields) :
+							$checked = ($context === $args['context']) ? 'selected' : '';
+							?>
                             <option value="<?php echo esc_attr($context); ?>" <?php echo esc_attr($checked); ?>>
                                 <?php echo esc_html($context_details[ $context ]['label']); ?>
                             </option>
                         <?php endforeach;
-                    endif; ?>
+					endif; ?>
                 </select>
                 <?php $button_text = sprintf(
-                    esc_html__('Switch %s', 'event_espresso'),
-                    ucwords($context_label['label'])
-                ); ?>
+					esc_html__('Switch %s', 'event_espresso'),
+					ucwords($context_label['label'])
+				); ?>
                 <input class='button--secondary'
                        id="submit-msg-context-switcher-sbmt"
                        type="submit"
@@ -2703,1993 +2703,1993 @@ 
             <?php echo wp_kses($args['extra'], AllowedTags::getWithFormTags()); ?>
         </div> <!-- end .ee-msg-switcher-container -->
         <?php $this->_context_switcher = ob_get_clean();
-    }
-
-
-    /**
-     * @param bool $new
-     * @throws EE_Error
-     * @throws ReflectionException
-     */
-    protected function _insert_or_update_message_template($new = false)
-    {
-        $form_data    = $this->getMessageTemplateFormData();
-        $GRP_ID       = $form_data['GRP_ID'];
-        $messenger    = $form_data['MTP_messenger'];
-        $message_type = $form_data['MTP_message_type'];
-        $context      = $form_data['MTP_context'];
-
-        // if this is "new" then we need to generate the default contexts
-        // for the selected messenger/message_type for user to edit.
-        [$success, $query_args] = $new
-            ? $this->generateNewTemplates($GRP_ID, $messenger, $message_type)
-            : $this->updateExistingTemplates($GRP_ID, $messenger, $message_type, $context, $form_data);
-
-        $success     = $success ? 1 : 0;
-        $action_desc = $new ? 'created' : 'updated';
-        $item_desc   = $this->generateUpdateDescription($messenger, $message_type, $context);
-        $override    = $this->performTestSendAfterUpdate($messenger, $message_type, $context);
-
-        $this->_redirect_after_action($success, $item_desc, $action_desc, $query_args, $override);
-    }
-
-
-    /**
-     * retrieve and sanitize form data
-     *
-     * @return array
-     * @since 4.10.29.p
-     */
-    protected function getMessageTemplateFormData()
-    {
-        return [
-            'GRP_ID'           => $this->request->getRequestParam('GRP_ID', 0, 'int'),
-            'MTP_context'      => strtolower($this->request->getRequestParam('MTP_context', '')),
-            'MTP_messenger'    => strtolower($this->request->getRequestParam('MTP_messenger', '')),
-            'MTP_message_type' => strtolower($this->request->getRequestParam('MTP_message_type', '')),
-            'MTP_user_id'      => $this->request->getRequestParam('MTP_user_id', 0, 'int'),
-            'MTP_is_global'    => $this->request->getRequestParam('MTP_is_global', 0, 'int'),
-            'MTP_is_override'  => $this->request->getRequestParam('MTP_is_override', 0, 'int'),
-            'MTP_deleted'      => $this->request->getRequestParam('MTP_deleted', 0, 'int'),
-            'MTP_is_active'    => $this->request->getRequestParam('MTP_is_active', 0, 'int'),
-        ];
-    }
-
-
-    /**
-     * @param int    $GRP_ID
-     * @param string $messenger
-     * @param string $message_type
-     * @return array no return on AJAX requests
-     * @throws EE_Error
-     * @throws ReflectionException
-     * @since 4.10.29.p
-     */
-    private function generateNewTemplates($GRP_ID, $messenger, $message_type)
-    {
-        $new_templates = $this->_generate_new_templates($messenger, [$message_type], $GRP_ID);
-        $success       = ! empty($new_templates);
-
-        // we return things differently if doing ajax
-        if ($this->request->isAjax()) {
-            $this->_template_args['success'] = $success;
-            $this->_template_args['error']   = ! $success;
-            $this->_template_args['content'] = '';
-            $this->_template_args['data']    = [
-                'grpID'        => $new_templates['GRP_ID'],
-                'templateName' => $new_templates['template_name'],
-            ];
-            if ($success) {
-                EE_Error::overwrite_success();
-                EE_Error::add_success(
-                    esc_html__(
-                        'The new template has been created and automatically selected for this event.  You can edit the new template by clicking the edit button.  Note before this template is assigned to this event, the event must be saved.',
-                        'event_espresso'
-                    )
-                );
-            }
-            $this->_return_json();
-        }
-        return [
-            $success,
-            // 'query_args'
-            [
-                'id'      => $new_templates['GRP_ID'],
-                'context' => $new_templates['MTP_context'],
-                'action'  => 'edit_message_template',
-            ],
-        ];
-    }
-
-
-    /**
-     * @param int    $GRP_ID
-     * @param string $messenger
-     * @param string $message_type
-     * @param string $context
-     * @param array  $form_data
-     * @return array
-     * @throws EE_Error
-     * @since 4.10.29.p
-     */
-    private function updateExistingTemplates(
-        $GRP_ID,
-        $messenger,
-        $message_type,
-        $context,
-        array $form_data
-    ) {
-        $success         = false;
-        $template_fields = $this->getTemplateFields();
-        if ($template_fields) {
-            // if field data is valid, then success will be true
-            $success = $this->validateTemplateFields(
-                $messenger,
-                $message_type,
-                $context,
-                $template_fields
-            );
-            if ($success) {
-                $field_data = [];
-                foreach ($template_fields as $template_field => $content) {
-                    // combine top-level form data with content for this field
-                    $field_data = $this->getTemplateFieldFormData($content, $form_data);
-                    $success    = $this->updateMessageTemplates($template_field, $field_data) ? $success : false;
-                }
-                // we can use the last set_column_values for the MTPG update
-                // (because its the same for all of these specific MTPs)
-                $success = $this->updateMessageTemplateGroup($field_data) ? $success : false;
-            }
-        }
-
-        return [
-            $success,
-            // 'query_args'
-            [
-                'id'      => $GRP_ID,
-                'context' => $context,
-                'action'  => 'edit_message_template',
-            ],
-        ];
-    }
-
-
-    /**
-     * @return array
-     * @since 4.10.29.p
-     */
-    private function getTemplateFields()
-    {
-        $template_fields = $this->request->getRequestParam('MTP_template_fields', null, 'html', true);
-        if (empty($template_fields)) {
-            EE_Error::add_error(
-                esc_html__(
-                    'There was a problem saving the template fields from the form because I didn\'t receive any actual template field data.',
-                    'event_espresso'
-                ),
-                __FILE__,
-                __FUNCTION__,
-                __LINE__
-            );
-            return null;
-        }
-        // messages content is expected to be escaped
-        return EEH_Array::addSlashesRecursively($template_fields);
-    }
-
-
-    /**
-     * @param string $messenger
-     * @param string $message_type
-     * @param string $context
-     * @param array  $template_fields
-     * @return bool
-     * @throws EE_Error
-     * @since   4.10.29.p
-     */
-    private function validateTemplateFields(
-        $messenger,
-        $message_type,
-        $context,
-        array $template_fields
-    ) {
-        // first validate all fields!
-        // this filter allows client code to add its own validation to the template fields as well.
-        // returning an empty array means everything passed validation.
-        // errors in validation should be represented in an array with the following shape:
-        // array(
-        //   'fieldname' => array(
-        //          'msg' => 'error message'
-        //          'value' => 'value for field producing error'
-        // )
-        $custom_validation = (array) apply_filters(
-            'FHEE__Messages_Admin_Page___insert_or_update_message_template__validates',
-            [],
-            $template_fields,
-            $context,
-            $messenger,
-            $message_type
-        );
-
-        $system_validation = $this->getMtgModel()->validate(
-            $template_fields,
-            $context,
-            $messenger,
-            $message_type
-        );
-
-        $system_validation = ! is_array($system_validation) && $system_validation ? [] : $system_validation;
-        $validates         = array_merge($custom_validation, $system_validation);
-
-        // if $validate returned error messages (i.e. is_array()) then we need to process them and setup an
-        // appropriate response. HMM, dang this isn't correct, $validates will ALWAYS be an array.
-        //  WE need to make sure there is no actual error messages in validates.
-        if (empty($validates)) {
-            return true;
-        }
-
-        // add the transient so when the form loads we know which fields to highlight
-        $this->_add_transient('edit_message_template', $validates);
-        // setup notices
-        foreach ($validates as $error) {
-            if (isset($error['msg'])) {
-                EE_Error::add_error($error['msg'], __FILE__, __FUNCTION__, __LINE__);
-            }
-        }
-        return false;
-    }
-
-
-    /**
-     * @param array $field_data
-     * @param array $form_data
-     * @return array
-     * @since   4.10.29.p
-     */
-    private function getTemplateFieldFormData(array $field_data, array $form_data)
-    {
-        return $form_data + [
-                'MTP_ID'             => $field_data['MTP_ID'],
-                'MTP_template_field' => $field_data['name'],
-                // if they aren't allowed to use all JS, restrict them to standard allowed post tags
-                'MTP_content'        => ! current_user_can('unfiltered_html')
-                    ? $this->sanitizeMessageTemplateContent($field_data['content'])
-                    : $field_data['content'],
-            ];
-    }
-
-
-    /**
-     * @param string $template_field
-     * @param array  $form_data
-     * @return bool
-     * @throws EE_Error
-     * @since 4.10.29.p
-     */
-    private function updateMessageTemplates($template_field, array $form_data)
-    {
-        $MTP_ID                  = $form_data['MTP_ID'];
-        $message_template_fields = [
-            'GRP_ID'             => $form_data['GRP_ID'],
-            'MTP_template_field' => $form_data['MTP_template_field'],
-            'MTP_context'        => $form_data['MTP_context'],
-            'MTP_content'        => $form_data['MTP_content'],
-        ];
-
-        $hasMtpID = ! empty($MTP_ID);
-        // if we have a MTP_ID for this field then update it, otherwise insert.
-        // this has already been through the template field validator and sanitized, so it will be
-        // safe to insert this field.  Why insert?  This typically happens when we introduce a new
-        // message template field in a messenger/message type and existing users don't have the
-        // default setup for it.
-        // @link https://events.codebasehq.com/projects/event-espresso/tickets/9465
-        $updated = $hasMtpID
-            ? $this->getMtpModel()->update($message_template_fields, [['MTP_ID' => $MTP_ID]])
-            : $this->getMtpModel()->insert($message_template_fields);
-
-        $insert_failed = ! $hasMtpID && ! $updated;
-        // updates will return 0 if the field was not changed (ie: no changes = nothing actually updated)
-        // but we won't consider that a problem, but if it returns false, then something went BOOM!
-        $update_failed = $hasMtpID && $updated === false;
-
-        if ($insert_failed || $update_failed) {
-            EE_Error::add_error(
-                sprintf(
-                    esc_html__('%s field was NOT updated for some reason', 'event_espresso'),
-                    $template_field
-                ),
-                __FILE__,
-                __FUNCTION__,
-                __LINE__
-            );
-            return false;
-        }
-        return true;
-    }
-
-
-    /**
-     * @param array $form_data
-     * @return bool
-     * @throws EE_Error
-     * @since 4.10.29.p
-     */
-    private function updateMessageTemplateGroup(array $form_data)
-    {
-        $GRP_ID  = $form_data['GRP_ID'];
-        $updated = $this->getMtgModel()->update(
-        // fields and values
-            [
-                'MTP_user_id'      => $form_data['MTP_user_id'],
-                'MTP_messenger'    => $form_data['MTP_messenger'],
-                'MTP_message_type' => $form_data['MTP_message_type'],
-                'MTP_is_global'    => $form_data['MTP_is_global'],
-                'MTP_is_override'  => $form_data['MTP_is_override'],
-                'MTP_deleted'      => $form_data['MTP_deleted'],
-                'MTP_is_active'    => $form_data['MTP_is_active'],
-                'MTP_name'         => $this->request->getRequestParam('ee_msg_non_global_fields[MTP_name]', ''),
-                'MTP_description'  => $this->request->getRequestParam(
-                    'ee_msg_non_global_fields[MTP_description]',
-                    ''
-                ),
-            ],
-            // where
-            [['GRP_ID' => $GRP_ID]]
-        );
-
-        if ($updated === false) {
-            EE_Error::add_error(
-                sprintf(
-                    esc_html__(
-                        'The Message Template Group (%d) was NOT updated for some reason',
-                        'event_espresso'
-                    ),
-                    $form_data['GRP_ID']
-                ),
-                __FILE__,
-                __FUNCTION__,
-                __LINE__
-            );
-            return false;
-        }
-        // k now we need to ensure the template_pack and template_variation fields are set.
-        $template_pack      = $this->request->getRequestParam('MTP_template_pack', 'default');
-        $template_variation = $this->request->getRequestParam('MTP_template_variation', 'default');
-
-        $message_template_group = $this->getMtgModel()->get_one_by_ID($GRP_ID);
-        if ($message_template_group instanceof EE_Message_Template_Group) {
-            $message_template_group->set_template_pack_name($template_pack);
-            $message_template_group->set_template_pack_variation($template_variation);
-        }
-        return true;
-    }
-
-
-    /**
-     * recursively runs wp_kses() on message template content in a model safe manner
-     *
-     * @param array|string $content
-     * @return array|string
-     * @since   4.10.29.p
-     */
-    private function sanitizeMessageTemplateContent($content)
-    {
-        if (is_array($content)) {
-            foreach ($content as $key => $value) {
-                $content[ $key ] = $this->sanitizeMessageTemplateContent($value);
-            }
-            return $content;
-        }
-        // remove slashes so wp_kses() works properly
-        // wp_kses_stripslashes() only removes slashes from double-quotes,
-        // so attributes using single quotes always appear invalid.
-        $content = stripslashes($content);
-        $content = wp_kses($content, wp_kses_allowed_html('post'));
-        // But currently the models expect slashed data, so after wp_kses()
-        // runs we need to re-slash the data. Sheesh.
-        // See https://events.codebasehq.com/projects/event-espresso/tickets/11211#update-47321587
-        return addslashes($content);
-    }
-
-
-    /**
-     * @param string $messenger
-     * @param string $message_type
-     * @param string $context
-     * @return string
-     * @since 4.10.29.p
-     */
-    private function generateUpdateDescription($messenger, $message_type, $context)
-    {
-        // need the message type and messenger objects to be able to use the labels for the notices
-        $messenger_object = $this->_message_resource_manager->get_messenger($messenger);
-        $messenger_label  = $messenger_object instanceof EE_messenger
-            ? ucwords($messenger_object->label['singular'])
-            : '';
-
-        $message_type_object = $this->_message_resource_manager->get_message_type($message_type);
-        $message_type_label  = $message_type_object instanceof EE_message_type
-            ? ucwords($message_type_object->label['singular'])
-            : '';
-
-        $context   = ucwords(str_replace('_', ' ', $context));
-        $item_desc = $messenger_label && $message_type_label
-            ? $messenger_label . ' ' . $message_type_label . ' ' . $context . ' '
-            : '';
-        $item_desc .= 'Message Template';
-        return $item_desc;
-    }
-
-
-    /**
-     * @param string $messenger
-     * @param string $message_type
-     * @param string $context
-     * @return bool
-     * @throws EE_Error
-     * @throws ReflectionException
-     * @since 4.10.29.p
-     */
-    private function performTestSendAfterUpdate($messenger, $message_type, $context)
-    {
-        // was a test send triggered?
-        if ($this->request->requestParamIsSet('test_button')) {
-            EE_Error::overwrite_success();
-            $this->_do_test_send($context, $messenger, $message_type);
-            return true;
-        }
-        return false;
-    }
-
-
-    /**
-     * processes a test send request to do an actual messenger delivery test for the given message template being tested
-     *
-     * @param string $context      what context being tested
-     * @param string $messenger    messenger being tested
-     * @param string $message_type message type being tested
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     * @throws ReflectionException
-     */
-    protected function _do_test_send($context, $messenger, $message_type)
-    {
-        // set things up for preview
-        $this->request->setRequestParam('messenger', $messenger);
-        $this->request->setRequestParam('message_type', $message_type);
-        $this->request->setRequestParam('context', $context);
-        $GRP_ID = $this->request->getRequestParam('GRP_ID', 0, 'int');
-        $this->request->setRequestParam('GRP_ID', $GRP_ID);
-
-        $active_messenger  = $this->_message_resource_manager->get_active_messenger($messenger);
-        $test_settings_fld = $this->request->getRequestParam('test_settings_fld', [], 'string', true);
-
-        // let's save any existing fields that might be required by the messenger
-        if (
-            ! empty($test_settings_fld)
-            && $active_messenger instanceof EE_messenger
-            && apply_filters(
-                'FHEE__Messages_Admin_Page__do_test_send__set_existing_test_settings',
-                true,
-                $test_settings_fld,
-                $active_messenger
-            )
-        ) {
-            $active_messenger->set_existing_test_settings($test_settings_fld);
-        }
-
-        /**
-         * Use filter to add additional controls on whether message can send or not
-         */
-        if (
-            apply_filters(
-                'FHEE__Messages_Admin_Page__do_test_send__can_send',
-                true,
-                $context,
-                $this->request->requestParams(),
-                $messenger,
-                $message_type
-            )
-        ) {
-            if (EEM_Event::instance()->count() > 0) {
-                $success = $this->_preview_message(true);
-                if ($success) {
-                    EE_Error::add_success(esc_html__('Test message sent', 'event_espresso'));
-                } else {
-                    EE_Error::add_error(
-                        esc_html__('The test message was not sent', 'event_espresso'),
-                        __FILE__,
-                        __FUNCTION__,
-                        __LINE__
-                    );
-                }
-            } else {
-                $this->noEventsErrorMessage(true);
-            }
-        }
-    }
-
-
-    /**
-     * _generate_new_templates
-     * This will handle the messenger, message_type selection when "adding a new custom template" for an event and will
-     * automatically create the defaults for the event.  The user would then be redirected to edit the default context
-     * for the event.
-     *
-     *
-     * @param string $messenger      the messenger we are generating templates for
-     * @param array  $message_types  array of message types that the templates are generated for.
-     * @param int    $GRP_ID         If this is a custom template being generated then a GRP_ID needs to be included to
-     *                               indicate the message_template_group being used as the base.
-     *
-     * @param bool   $global
-     *
-     * @return array|bool array of data required for the redirect to the correct edit page or bool if
-     *                               encountering problems.
-     * @throws EE_Error
-     * @throws ReflectionException
-     */
-    protected function _generate_new_templates($messenger, $message_types, $GRP_ID = 0, $global = false)
-    {
-        // if no $message_types are given then that's okay... this may be a messenger that just adds shortcodes, so we
-        // just don't generate any templates.
-        if (empty($message_types)) {
-            return [];
-        }
-
-        $templates = EEH_MSG_Template::generate_new_templates($messenger, $message_types, $GRP_ID, $global);
-        return $templates[0];
-    }
-
-
-    /**
-     * [_trash_or_restore_message_template]
-     *
-     * @param boolean $trash  whether to move an item to trash/restore (TRUE) or restore it (FALSE)
-     * @param boolean $all    whether this is going to trash/restore all contexts within a template group (TRUE) OR just
-     *                        an individual context (FALSE).
-     * @return void
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     */
-    protected function _trash_or_restore_message_template($trash = true, $all = false)
-    {
-        do_action('AHEE_log', __FILE__, __FUNCTION__, '');
-
-        $success = 1;
-
-        // incoming GRP_IDs
-        if ($all) {
-            // Checkboxes
-            $checkboxes = $this->request->getRequestParam('checkbox', [], 'int', true);
-            if (! empty($checkboxes)) {
-                // if array has more than one element then success message should be plural.
-                // todo: what about nonce?
-                $success = count($checkboxes) > 1 ? 2 : 1;
-
-                // cycle through checkboxes
-                while (list($GRP_ID, $value) = each($checkboxes)) {
-                    $trashed_or_restored = $trash
-                        ? $this->getMtgModel()->delete_by_ID($GRP_ID)
-                        : $this->getMtgModel()->restore_by_ID($GRP_ID);
-                    if (! $trashed_or_restored) {
-                        $success = 0;
-                    }
-                }
-            } else {
-                // grab single GRP_ID and handle
-                $GRP_ID = $this->request->getRequestParam('id', 0, 'int');
-                if (! empty($GRP_ID)) {
-                    $trashed_or_restored = $trash
-                        ? $this->getMtgModel()->delete_by_ID($GRP_ID)
-                        : $this->getMtgModel()->restore_by_ID($GRP_ID);
-                    if (! $trashed_or_restored) {
-                        $success = 0;
-                    }
-                } else {
-                    $success = 0;
-                }
-            }
-        }
-
-        $action_desc = $trash
-            ? esc_html__('moved to the trash', 'event_espresso')
-            : esc_html__('restored', 'event_espresso');
-
-        $template_switch = $this->request->getRequestParam('template_switch', false, 'bool');
-        $action_desc     = $template_switch ? esc_html__('switched', 'event_espresso') : $action_desc;
-
-        $item_desc = $all ? _n(
-            'Message Template Group',
-            'Message Template Groups',
-            $success,
-            'event_espresso'
-        ) : _n('Message Template Context', 'Message Template Contexts', $success, 'event_espresso');
-
-        $item_desc = $template_switch
-            ? _n('template', 'templates', $success, 'event_espresso')
-            : $item_desc;
-
-        $this->_redirect_after_action($success, $item_desc, $action_desc, []);
-    }
-
-
-    /**
-     * [_delete_message_template]
-     * NOTE: this handles not only the deletion of the groups but also all the templates belonging to that group.
-     *
-     * @return void
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     * @throws ReflectionException
-     */
-    protected function _delete_message_template()
-    {
-        do_action('AHEE_log', __FILE__, __FUNCTION__, '');
-
-        // checkboxes
-        $checkboxes = $this->request->getRequestParam('checkbox', [], 'int', true);
-        if (! empty($checkboxes)) {
-            // if array has more than one element then success message should be plural
-            $success = count($checkboxes) > 1 ? 2 : 1;
-
-            // cycle through bulk action checkboxes
-            while (list($GRP_ID, $value) = each($checkboxes)) {
-                $success = $this->_delete_mtp_permanently($GRP_ID) ? $success : false;
-            }
-        } else {
-            // grab single grp_id and delete
-            $GRP_ID  = $this->request->getRequestParam('id', 0, 'int');
-            $success = $this->_delete_mtp_permanently($GRP_ID);
-        }
-
-        $this->_redirect_after_action($success, 'Message Templates', 'deleted', []);
-    }
-
-
-    /**
-     * helper for permanently deleting a mtP group and all related message_templates
-     *
-     * @param int  $GRP_ID        The group being deleted
-     * @param bool $include_group whether to delete the Message Template Group as well.
-     * @return bool boolean to indicate the success of the deletes or not.
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     * @throws ReflectionException
-     * @throws ReflectionException
-     */
-    private function _delete_mtp_permanently($GRP_ID, $include_group = true)
-    {
-        $success = true;
-        // first let's GET this group
-        $MTG = $this->getMtgModel()->get_one_by_ID($GRP_ID);
-        // then delete permanently all the related Message Templates
-        $deleted = $MTG->delete_related_permanently('Message_Template');
-
-        if ($deleted === 0) {
-            $success = false;
-        }
-
-        // now delete permanently this particular group
-
-        if ($include_group && ! $MTG->delete_permanently()) {
-            $success = false;
-        }
-
-        return $success;
-    }
-
-
-    /**
-     *    _learn_more_about_message_templates_link
-     *
-     * @access protected
-     * @return string
-     */
-    protected function _learn_more_about_message_templates_link()
-    {
-        return '<a class="hidden" style="margin:0 20px; cursor:pointer; font-size:12px;" >'
-               . esc_html__('learn more about how message templates works', 'event_espresso')
-               . '</a>';
-    }
-
-
-    /**
-     * Used for setting up messenger/message type activation.  This loads up the initial view.  The rest is handled by
-     * ajax and other routes.
-     *
-     * @return void
-     * @throws DomainException
-     * @throws EE_Error
-     */
-    protected function _settings()
-    {
-        $this->_set_m_mt_settings();
-
-        // let's setup the messenger tabs
-        $this->_template_args['admin_page_header'] = EEH_Tabbed_Content::tab_text_links(
-            $this->_m_mt_settings['messenger_tabs'],
-            'messenger_links',
-            '|',
-            $this->request->getRequestParam('selected_messenger', 'email')
-        );
-
-        $this->_template_args['before_admin_page_content'] = '<div class="ui-widget ui-helper-clearfix">';
-        $this->_template_args['after_admin_page_content']  = '</div><!-- end .ui-widget -->';
-
-        $this->display_admin_page_with_sidebar();
-    }
-
-
-    /**
-     * This sets the $_m_mt_settings property for when needed (used on the Messages settings page)
-     *
-     * @access protected
-     * @return void
-     * @throws DomainException
-     */
-    protected function _set_m_mt_settings()
-    {
-        // first if this is already set then lets get out no need to regenerate data.
-        if (! empty($this->_m_mt_settings)) {
-            return;
-        }
-
-        // get all installed messengers and message_types
-        $messengers    = $this->_message_resource_manager->installed_messengers();
-        $message_types = $this->_message_resource_manager->installed_message_types();
-
-
-        // assemble the array for the _tab_text_links helper
-
-        foreach ($messengers as $messenger) {
-            $active = $this->_message_resource_manager->is_messenger_active($messenger->name);
-            $class = 'ee-messenger-' .  sanitize_key($messenger->label['singular']);
-            $this->_m_mt_settings['messenger_tabs'][ $messenger->name ] = [
-                'label' => ucwords($messenger->label['singular']),
-                'class' => $active ? "{$class} messenger-active" : $class,
-                'href'  => $messenger->name,
-                'title' => esc_html__('Modify this Messenger', 'event_espresso'),
-                'slug'  => $messenger->name,
-                'obj'   => $messenger,
-                'icon' => $active
-                    ? '<span class="dashicons dashicons-yes-alt"></span>'
-                    : '<span class="dashicons dashicons-remove"></span>',
-            ];
-
-
-            $message_types_for_messenger = $messenger->get_valid_message_types();
-
-            foreach ($message_types as $message_type) {
-                // first we need to verify that this message type is valid with this messenger. Cause if it isn't then
-                // it shouldn't show in either the inactive OR active metabox.
-                if (! in_array($message_type->name, $message_types_for_messenger, true)) {
-                    continue;
-                }
-
-                $a_or_i = $this->_message_resource_manager->is_message_type_active_for_messenger(
-                    $messenger->name,
-                    $message_type->name
-                )
-                    ? 'active'
-                    : 'inactive';
-
-                $this->_m_mt_settings['message_type_tabs'][ $messenger->name ][ $a_or_i ][ $message_type->name ] = [
-                    'label'    => ucwords($message_type->label['singular']),
-                    'class'    => 'message-type-' . $a_or_i,
-                    'slug_id'  => $message_type->name . '-messagetype-' . $messenger->name,
-                    'mt_nonce' => wp_create_nonce($message_type->name . '_nonce'),
-                    'href'     => 'espresso_' . $message_type->name . '_message_type_settings',
-                    'title'    => $a_or_i === 'active'
-                        ? esc_html__('Drag this message type to the Inactive window to deactivate', 'event_espresso')
-                        : esc_html__('Drag this message type to the messenger to activate', 'event_espresso'),
-                    'content'  => $a_or_i === 'active'
-                        ? $this->_message_type_settings_content($message_type, $messenger, true)
-                        : $this->_message_type_settings_content($message_type, $messenger),
-                    'slug'     => $message_type->name,
-                    'active'   => $a_or_i === 'active',
-                    'obj'      => $message_type,
-                ];
-            }
-        }
-    }
-
-
-    /**
-     * This just prepares the content for the message type settings
-     *
-     * @param EE_message_type $message_type The message type object
-     * @param EE_messenger    $messenger    The messenger object
-     * @param boolean         $active       Whether the message type is active or not
-     * @return string html output for the content
-     * @throws DomainException
-     */
-    protected function _message_type_settings_content($message_type, $messenger, $active = false)
-    {
-        // get message type fields
-        $fields                                         = $message_type->get_admin_settings_fields();
-        $settings_template_args['template_form_fields'] = '';
-
-        if (! empty($fields) && $active) {
-            $existing_settings = $message_type->get_existing_admin_settings($messenger->name);
-            foreach ($fields as $fldname => $fldprops) {
-                $field_id                         = $messenger->name . '-' . $message_type->name . '-' . $fldname;
-                $template_form_field[ $field_id ] = [
-                    'name'       => 'message_type_settings[' . $fldname . ']',
-                    'label'      => $fldprops['label'],
-                    'input'      => $fldprops['field_type'],
-                    'type'       => $fldprops['value_type'],
-                    'required'   => $fldprops['required'],
-                    'validation' => $fldprops['validation'],
-                    'value'      => isset($existing_settings[ $fldname ])
-                        ? $existing_settings[ $fldname ]
-                        : $fldprops['default'],
-                    'options'    => isset($fldprops['options'])
-                        ? $fldprops['options']
-                        : [],
-                    'default'    => isset($existing_settings[ $fldname ])
-                        ? $existing_settings[ $fldname ]
-                        : $fldprops['default'],
-                    'css_class'  => 'no-drag',
-                    'format'     => $fldprops['format'],
-                ];
-            }
-
-
-            $settings_template_args['template_form_fields'] = ! empty($template_form_field)
-                ? $this->_generate_admin_form_fields(
-                    $template_form_field,
-                    'string',
-                    'ee_mt_activate_form'
-                )
-                : '';
-        }
-
-        $settings_template_args['description'] = $message_type->description;
-        // we also need some hidden fields
-        $hidden_fields = [
-            'message_type_settings[messenger]' . $message_type->name    => [
-                'type'  => 'hidden',
-                'value' => $messenger->name,
-            ],
-            'message_type_settings[message_type]' . $message_type->name => [
-                'type'  => 'hidden',
-                'value' => $message_type->name,
-            ],
-            'type' . $message_type->name                                => [
-                'type'  => 'hidden',
-                'value' => 'message_type',
-            ],
-        ];
-
-        $settings_template_args['hidden_fields'] = $this->_generate_admin_form_fields(
-            $hidden_fields,
-            'array'
-        );
-        $settings_template_args['show_form']     = empty($settings_template_args['template_form_fields'])
-            ? ' hidden'
-            : '';
-
-
-        $template = EE_MSG_TEMPLATE_PATH . 'ee_msg_mt_settings_content.template.php';
-        return EEH_Template::display_template($template, $settings_template_args, true);
-    }
-
-
-    /**
-     * Generate all the metaboxes for the message types and register them for the messages settings page.
-     *
-     * @access protected
-     * @return void
-     * @throws DomainException
-     */
-    protected function _messages_settings_metaboxes()
-    {
-        $this->_set_m_mt_settings();
-        $m_boxes         = $mt_boxes = [];
-        $m_template_args = $mt_template_args = [];
-
-        $selected_messenger = $this->request->getRequestParam('selected_messenger', 'email');
-
-        if (isset($this->_m_mt_settings['messenger_tabs'])) {
-            foreach ($this->_m_mt_settings['messenger_tabs'] as $messenger => $tab_array) {
-                $is_messenger_active = $this->_message_resource_manager->is_messenger_active($messenger);
-                $hide_on_message     = $is_messenger_active ? '' : 'hidden';
-                $hide_off_message    = $is_messenger_active ? 'hidden' : '';
-
-                // messenger meta boxes
-                $active         = $selected_messenger === $messenger;
-                $active_mt_tabs = isset($this->_m_mt_settings['message_type_tabs'][ $messenger ]['active'])
-                    ? $this->_m_mt_settings['message_type_tabs'][ $messenger ]['active']
-                    : '';
-
-                $m_boxes[ $messenger . '_a_box' ] = sprintf(
-                    esc_html__('%s Settings', 'event_espresso'),
-                    $tab_array['label']
-                );
-
-                $m_template_args[ $messenger . '_a_box' ] = [
-                    'active_message_types'   => ! empty($active_mt_tabs) ? $this->_get_mt_tabs($active_mt_tabs) : '',
-                    'inactive_message_types' => isset(
-                        $this->_m_mt_settings['message_type_tabs'][ $messenger ]['inactive']
-                    )
-                        ? $this->_get_mt_tabs($this->_m_mt_settings['message_type_tabs'][ $messenger ]['inactive'])
-                        : '',
-                    'content'                => $this->_get_messenger_box_content($tab_array['obj']),
-                    'hidden'                 => $active ? '' : ' hidden',
-                    'hide_on_message'        => $hide_on_message,
-                    'messenger'              => $messenger,
-                    'active'                 => $active,
-                ];
-
-                // message type meta boxes
-                // (which is really just the inactive container for each messenger
-                // showing inactive message types for that messenger)
-                $mt_boxes[ $messenger . '_i_box' ]         = esc_html__('Inactive Message Types', 'event_espresso');
-                $mt_template_args[ $messenger . '_i_box' ] = [
-                    'active_message_types'   => ! empty($active_mt_tabs) ? $this->_get_mt_tabs($active_mt_tabs) : '',
-                    'inactive_message_types' => isset(
-                        $this->_m_mt_settings['message_type_tabs'][ $messenger ]['inactive']
-                    )
-                        ? $this->_get_mt_tabs($this->_m_mt_settings['message_type_tabs'][ $messenger ]['inactive'])
-                        : '',
-                    'hidden'                 => $active ? '' : ' hidden',
-                    'hide_on_message'        => $hide_on_message,
-                    'hide_off_message'       => $hide_off_message,
-                    'messenger'              => $messenger,
-                    'active'                 => $active,
-                ];
-            }
-        }
-
-
-        // register messenger metaboxes
-        $m_template_path = EE_MSG_TEMPLATE_PATH . 'ee_msg_details_messenger_mt_meta_box.template.php';
-        foreach ($m_boxes as $box => $label) {
-            $callback_args = ['template_path' => $m_template_path, 'template_args' => $m_template_args[ $box ]];
-            $msgr          = str_replace('_a_box', '', $box);
-            $this->addMetaBox(
-                'espresso_' . $msgr . '_settings',
-                $label,
-                function ($post, $metabox) {
-                    EEH_Template::display_template(
-                        $metabox['args']['template_path'],
-                        $metabox['args']['template_args']
-                    );
-                },
-                $this->_current_screen->id,
-                'normal',
-                'high',
-                $callback_args
-            );
-        }
-
-        // register message type metaboxes
-        $mt_template_path = EE_MSG_TEMPLATE_PATH . 'ee_msg_details_messenger_meta_box.template.php';
-        foreach ($mt_boxes as $box => $label) {
-            $callback_args = [
-                'template_path' => $mt_template_path,
-                'template_args' => $mt_template_args[ $box ],
-            ];
-            $mt            = str_replace('_i_box', '', $box);
-            $this->addMetaBox(
-                'espresso_' . $mt . '_inactive_mts',
-                $label,
-                function ($post, $metabox) {
-                    EEH_Template::display_template(
-                        $metabox['args']['template_path'],
-                        $metabox['args']['template_args']
-                    );
-                },
-                $this->_current_screen->id,
-                'side',
-                'high',
-                $callback_args
-            );
-        }
-
-        // register metabox for global messages settings but only when on the main site.  On single site installs this
-        // will always result in the metabox showing, on multisite installs the metabox will only show on the main site.
-        if (is_main_site()) {
-            $this->addMetaBox(
-                'espresso_global_message_settings',
-                esc_html__('Global Message Settings', 'event_espresso'),
-                [$this, 'global_messages_settings_metabox_content'],
-                $this->_current_screen->id,
-                'normal',
-                'low',
-                []
-            );
-        }
-    }
-
-
-    /**
-     *  This generates the content for the global messages settings metabox.
-     *
-     * @return void
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws ReflectionException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     */
-    public function global_messages_settings_metabox_content()
-    {
-        $form = $this->_generate_global_settings_form();
-        echo wp_kses(
-            $form->form_open(
-                $this->add_query_args_and_nonce(['action' => 'update_global_settings'], EE_MSG_ADMIN_URL),
-                'POST'
-            ),
-            AllowedTags::getWithFormTags()
-        );
-        echo wp_kses($form->get_html(), AllowedTags::getWithFormTags());
-        echo wp_kses($form->form_close(), AllowedTags::getWithFormTags());
-    }
-
-
-    /**
-     * This generates and returns the form object for the global messages settings.
-     *
-     * @return EE_Form_Section_Proper
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws ReflectionException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     */
-    protected function _generate_global_settings_form()
-    {
-        /** @var EE_Network_Core_Config $network_config */
-        $network_config = EE_Registry::instance()->NET_CFG->core;
-
-        return new EE_Form_Section_Proper(
-            [
-                'name'            => 'global_messages_settings',
-                'html_id'         => 'global_messages_settings',
-                'html_class'      => 'form-table',
-                'layout_strategy' => new EE_Admin_Two_Column_Layout(),
-                'subsections'     => apply_filters(
-                    'FHEE__Messages_Admin_Page__global_messages_settings_metabox_content__form_subsections',
-                    [
-                        'do_messages_on_same_request' => new EE_Select_Input(
-                            [
-                                true  => esc_html__('On the same request', 'event_espresso'),
-                                false => esc_html__('On a separate request', 'event_espresso'),
-                            ],
-                            [
-                                'default'         => $network_config->do_messages_on_same_request,
-                                'html_label_text' => esc_html__(
-                                    'Generate and send all messages:',
-                                    'event_espresso'
-                                ),
-                                'html_help_text'  => esc_html__(
-                                    'By default the messages system uses a more efficient means of processing messages on separate requests and utilizes the wp-cron scheduling system.  This makes things execute faster for people registering for your events.  However, if the wp-cron system is disabled on your site and there is no alternative in place, then you can change this so messages are always executed on the same request.',
-                                    'event_espresso'
-                                ),
-                            ]
-                        ),
-                        'delete_threshold'            => new EE_Select_Input(
-                            [
-                                0  => esc_html__('Forever', 'event_espresso'),
-                                3  => esc_html__('3 Months', 'event_espresso'),
-                                6  => esc_html__('6 Months', 'event_espresso'),
-                                9  => esc_html__('9 Months', 'event_espresso'),
-                                12 => esc_html__('12 Months', 'event_espresso'),
-                                24 => esc_html__('24 Months', 'event_espresso'),
-                                36 => esc_html__('36 Months', 'event_espresso'),
-                            ],
-                            [
-                                'default'         => EE_Registry::instance()->CFG->messages->delete_threshold,
-                                'html_label_text' => esc_html__('Cleanup of old messages:', 'event_espresso'),
-                                'html_help_text'  => esc_html__(
-                                    'You can control how long a record of processed messages is kept via this option.',
-                                    'event_espresso'
-                                ),
-                            ]
-                        ),
-                        'update_settings'             => new EE_Submit_Input(
-                            [
-                                'default'         => esc_html__('Update', 'event_espresso'),
-                                'html_label_text' => '',
-                            ]
-                        ),
-                    ]
-                ),
-            ]
-        );
-    }
-
-
-    /**
-     * This handles updating the global settings set on the admin page.
-     *
-     * @throws EE_Error
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     * @throws InvalidArgumentException
-     * @throws ReflectionException
-     */
-    protected function _update_global_settings()
-    {
-        /** @var EE_Network_Core_Config $network_config */
-        $network_config  = EE_Registry::instance()->NET_CFG->core;
-        $messages_config = EE_Registry::instance()->CFG->messages;
-        $form            = $this->_generate_global_settings_form();
-        if ($form->was_submitted()) {
-            $form->receive_form_submission();
-            if ($form->is_valid()) {
-                $valid_data = $form->valid_data();
-                foreach ($valid_data as $property => $value) {
-                    $setter = 'set_' . $property;
-                    if (method_exists($network_config, $setter)) {
-                        $network_config->{$setter}($value);
-                    } elseif (
-                        property_exists($network_config, $property)
-                        && $network_config->{$property} !== $value
-                    ) {
-                        $network_config->{$property} = $value;
-                    } elseif (
-                        property_exists($messages_config, $property)
-                        && $messages_config->{$property} !== $value
-                    ) {
-                        $messages_config->{$property} = $value;
-                    }
-                }
-                // only update if the form submission was valid!
-                EE_Registry::instance()->NET_CFG->update_config(true, false);
-                EE_Registry::instance()->CFG->update_espresso_config();
-                EE_Error::overwrite_success();
-                EE_Error::add_success(esc_html__('Global message settings were updated', 'event_espresso'));
-            }
-        }
-        $this->_redirect_after_action(0, '', '', ['action' => 'settings'], true);
-    }
-
-
-    /**
-     * this prepares the messenger tabs that can be dragged in and out of messenger boxes to activate/deactivate
-     *
-     * @param array $tab_array This is an array of message type tab details used to generate the tabs
-     * @return string html formatted tabs
-     * @throws DomainException
-     */
-    protected function _get_mt_tabs($tab_array)
-    {
-        $tab_array = (array) $tab_array;
-        $template  = EE_MSG_TEMPLATE_PATH . 'ee_msg_details_mt_settings_tab_item.template.php';
-        $tabs      = '';
-
-        foreach ($tab_array as $tab) {
-            $tabs .= EEH_Template::display_template($template, $tab, true);
-        }
-
-        return $tabs;
-    }
-
-
-    /**
-     * This prepares the content of the messenger meta box admin settings
-     *
-     * @param EE_messenger $messenger The messenger we're setting up content for
-     * @return string html formatted content
-     * @throws DomainException
-     */
-    protected function _get_messenger_box_content(EE_messenger $messenger)
-    {
-
-        $fields = $messenger->get_admin_settings_fields();
-
-        $settings_template_args['template_form_fields'] = '';
-        // is $messenger active?
-        $settings_template_args['active'] = $this->_message_resource_manager->is_messenger_active($messenger->name);
-
-
-        if (! empty($fields)) {
-            $existing_settings = $messenger->get_existing_admin_settings();
-
-            foreach ($fields as $field_name => $field_props) {
-                $field_id                         = $messenger->name . '-' . $field_name;
-                $template_form_field[ $field_id ] = [
-                    'name'       => 'messenger_settings[' . $field_id . ']',
-                    'label'      => $field_props['label'],
-                    'input'      => $field_props['field_type'],
-                    'type'       => $field_props['value_type'],
-                    'required'   => $field_props['required'],
-                    'validation' => $field_props['validation'],
-                    'value'      => $existing_settings[ $field_id ] ?? $field_props['default'],
-                    'css_class'  => '',
-                    'format'     => $field_props['format'],
-                ];
-            }
-
-            $settings_template_args['template_form_fields'] = ! empty($template_form_field)
-                ? $this->_generate_admin_form_fields($template_form_field, 'string', 'ee_m_activate_form')
-                : '';
-        }
-
-        // we also need some hidden fields
-        $settings_template_args['hidden_fields'] = [
-            'messenger_settings[messenger]' . $messenger->name => [
-                'type'  => 'hidden',
-                'value' => $messenger->name,
-            ],
-            'type' . $messenger->name                          => [
-                'type'  => 'hidden',
-                'value' => 'messenger',
-            ],
-        ];
-
-        // make sure any active message types that are existing are included in the hidden fields
-        if (isset($this->_m_mt_settings['message_type_tabs'][ $messenger->name ]['active'])) {
-            foreach ($this->_m_mt_settings['message_type_tabs'][ $messenger->name ]['active'] as $mt => $values) {
-                $settings_template_args['hidden_fields'][ 'messenger_settings[message_types][' . $mt . ']' ] = [
-                    'type'  => 'hidden',
-                    'value' => $mt,
-                ];
-            }
-        }
-        $settings_template_args['hidden_fields'] = $this->_generate_admin_form_fields(
-            $settings_template_args['hidden_fields'],
-            'array'
-        );
-        $active                                  =
-            $this->_message_resource_manager->is_messenger_active($messenger->name);
-
-        $settings_template_args['messenger']           = $messenger->name;
-        $settings_template_args['description']         = $messenger->description;
-        $settings_template_args['show_hide_edit_form'] = $active ? '' : ' hidden';
-
-
-        $settings_template_args['show_hide_edit_form'] = $this->_message_resource_manager->is_messenger_active(
-            $messenger->name
-        )
-            ? $settings_template_args['show_hide_edit_form']
-            : ' hidden';
-
-        $settings_template_args['show_hide_edit_form'] = empty($settings_template_args['template_form_fields'])
-            ? ' hidden'
-            : $settings_template_args['show_hide_edit_form'];
-
-
-        $settings_template_args['on_off_action'] = $active ? 'messenger-off' : 'messenger-on';
-        $settings_template_args['nonce']         = wp_create_nonce('activate_' . $messenger->name . '_toggle_nonce');
-        $settings_template_args['on_off_status'] = $active;
-        $template                                = EE_MSG_TEMPLATE_PATH . 'ee_msg_m_settings_content.template.php';
-        return EEH_Template::display_template(
-            $template,
-            $settings_template_args,
-            true
-        );
-    }
-
-
-    /**
-     * used by ajax on the messages settings page to activate|deactivate the messenger
-     *
-     * @throws DomainException
-     * @throws EE_Error
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     * @throws InvalidArgumentException
-     * @throws ReflectionException
-     */
-    public function activate_messenger_toggle()
-    {
-        $success = true;
-        $this->_prep_default_response_for_messenger_or_message_type_toggle();
-        // let's check that we have required data
-
-        if (! $this->_active_messenger_name) {
-            EE_Error::add_error(
-                esc_html__('Messenger name needed to toggle activation. None given', 'event_espresso'),
-                __FILE__,
-                __FUNCTION__,
-                __LINE__
-            );
-            $success = false;
-        }
-
-        // do a nonce check here since we're not arriving via a normal route
-        $nonce     = $this->request->getRequestParam('activate_nonce', '');
-        $nonce_ref = "activate_{$this->_active_messenger_name}_toggle_nonce";
-
-        $this->_verify_nonce($nonce, $nonce_ref);
-
-
-        $status = $this->request->getRequestParam('status');
-        if (! $status) {
-            EE_Error::add_error(
-                esc_html__(
-                    'Messenger status needed to know whether activation or deactivation is happening. No status is given',
-                    'event_espresso'
-                ),
-                __FILE__,
-                __FUNCTION__,
-                __LINE__
-            );
-            $success = false;
-        }
-
-        // do check to verify we have a valid status.
-        if ($status !== 'off' && $status !== 'on') {
-            EE_Error::add_error(
-                sprintf(
-                    esc_html__('The given status (%s) is not valid. Must be "off" or "on"', 'event_espresso'),
-                    $status
-                ),
-                __FILE__,
-                __FUNCTION__,
-                __LINE__
-            );
-            $success = false;
-        }
-
-        if ($success) {
-            // made it here?  Stop dawdling then!!
-            $success = $status === 'off'
-                ? $this->_deactivate_messenger($this->_active_messenger_name)
-                : $this->_activate_messenger($this->_active_messenger_name);
-        }
-
-        $this->_template_args['success'] = $success;
-
-        // no special instructions so let's just do the json return (which should automatically do all the special stuff).
-        $this->_return_json();
-    }
-
-
-    /**
-     * used by ajax from the messages settings page to activate|deactivate a message type
-     *
-     * @throws DomainException
-     * @throws EE_Error
-     * @throws ReflectionException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     * @throws InvalidArgumentException
-     */
-    public function activate_mt_toggle()
-    {
-        $success = true;
-        $this->_prep_default_response_for_messenger_or_message_type_toggle();
-
-        // let's make sure we have the necessary data
-        if (! $this->_active_message_type_name) {
-            EE_Error::add_error(
-                esc_html__('Message Type name needed to toggle activation. None given', 'event_espresso'),
-                __FILE__,
-                __FUNCTION__,
-                __LINE__
-            );
-            $success = false;
-        }
-
-        if (! $this->_active_messenger_name) {
-            EE_Error::add_error(
-                esc_html__('Messenger name needed to toggle activation. None given', 'event_espresso'),
-                __FILE__,
-                __FUNCTION__,
-                __LINE__
-            );
-            $success = false;
-        }
-
-        $status = $this->request->getRequestParam('status');
-        if (! $status) {
-            EE_Error::add_error(
-                esc_html__(
-                    'Messenger status needed to know whether activation or deactivation is happening. No status is given',
-                    'event_espresso'
-                ),
-                __FILE__,
-                __FUNCTION__,
-                __LINE__
-            );
-            $success = false;
-        }
-
-
-        // do check to verify we have a valid status.
-        if ($status !== 'activate' && $status !== 'deactivate') {
-            EE_Error::add_error(
-                sprintf(
-                    esc_html__('The given status (%s) is not valid. Must be "active" or "inactive"', 'event_espresso'),
-                    $status
-                ),
-                __FILE__,
-                __FUNCTION__,
-                __LINE__
-            );
-            $success = false;
-        }
-
-
-        // do a nonce check here since we're not arriving via a normal route
-        $nonce = $this->request->getRequestParam('mt_nonce', '');
-        $this->_verify_nonce($nonce, "{$this->_active_message_type_name}_nonce");
-
-        if ($success) {
-            // made it here? um, what are you waiting for then?
-            $success = $status === 'deactivate'
-                ? $this->_deactivate_message_type_for_messenger(
-                    $this->_active_messenger_name,
-                    $this->_active_message_type_name
-                )
-                : $this->_activate_message_type_for_messenger(
-                    $this->_active_messenger_name,
-                    $this->_active_message_type_name
-                );
-        }
-
-        $this->_template_args['success'] = $success;
-        $this->_return_json();
-    }
-
-
-    /**
-     * Takes care of processing activating a messenger and preparing the appropriate response.
-     *
-     * @param string $messenger_name The name of the messenger being activated
-     * @return bool
-     * @throws DomainException
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws ReflectionException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     */
-    protected function _activate_messenger($messenger_name)
-    {
-        $active_messenger          = $this->_message_resource_manager->get_messenger($messenger_name);
-        $message_types_to_activate = $active_messenger instanceof EE_Messenger
-            ? $active_messenger->get_default_message_types()
-            : [];
-
-        // ensure is active
-        $this->_message_resource_manager->activate_messenger($active_messenger, $message_types_to_activate);
-
-        // set response_data for reload
-        foreach ($message_types_to_activate as $message_type_name) {
-            $message_type = $this->_message_resource_manager->get_message_type($message_type_name);
-            if (
-                $this->_message_resource_manager->is_message_type_active_for_messenger(
-                    $messenger_name,
-                    $message_type_name
-                )
-                && $message_type instanceof EE_message_type
-            ) {
-                $this->_template_args['data']['active_mts'][] = $message_type_name;
-                if ($message_type->get_admin_settings_fields()) {
-                    $this->_template_args['data']['mt_reload'][] = $message_type_name;
-                }
-            }
-        }
-
-        // add success message for activating messenger
-        return $this->_setup_response_message_for_activating_messenger_with_message_types($active_messenger);
-    }
-
-
-    /**
-     * Takes care of processing deactivating a messenger and preparing the appropriate response.
-     *
-     * @param string $messenger_name The name of the messenger being activated
-     * @return bool
-     * @throws DomainException
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws ReflectionException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     */
-    protected function _deactivate_messenger($messenger_name)
-    {
-        $active_messenger = $this->_message_resource_manager->get_messenger($messenger_name);
-        $this->_message_resource_manager->deactivate_messenger($messenger_name);
-
-        return $this->_setup_response_message_for_deactivating_messenger_with_message_types($active_messenger);
-    }
-
-
-    /**
-     * Takes care of processing activating a message type for a messenger and preparing the appropriate response.
-     *
-     * @param string $messenger_name    The name of the messenger the message type is being activated for.
-     * @param string $message_type_name The name of the message type being activated for the messenger
-     * @return bool
-     * @throws DomainException
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws ReflectionException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     */
-    protected function _activate_message_type_for_messenger($messenger_name, $message_type_name)
-    {
-        $active_messenger         = $this->_message_resource_manager->get_messenger($messenger_name);
-        $message_type_to_activate = $this->_message_resource_manager->get_message_type($message_type_name);
-
-        // ensure is active
-        $this->_message_resource_manager->activate_messenger($active_messenger, $message_type_name);
-
-        // set response for load
-        if (
-            $this->_message_resource_manager->is_message_type_active_for_messenger(
-                $messenger_name,
-                $message_type_name
-            )
-        ) {
-            $this->_template_args['data']['active_mts'][] = $message_type_name;
-            if ($message_type_to_activate->get_admin_settings_fields()) {
-                $this->_template_args['data']['mt_reload'][] = $message_type_name;
-            }
-        }
-
-        return $this->_setup_response_message_for_activating_messenger_with_message_types(
-            $active_messenger,
-            $message_type_to_activate
-        );
-    }
-
-
-    /**
-     * Takes care of processing deactivating a message type for a messenger and preparing the appropriate response.
-     *
-     * @param string $messenger_name    The name of the messenger the message type is being deactivated for.
-     * @param string $message_type_name The name of the message type being deactivated for the messenger
-     * @return bool
-     * @throws DomainException
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws ReflectionException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     */
-    protected function _deactivate_message_type_for_messenger($messenger_name, $message_type_name)
-    {
-        $active_messenger = $this->_message_resource_manager->get_messenger($messenger_name);
-        /** @var EE_message_type $message_type_to_activate This will be present because it can't be toggled if it isn't */
-        $message_type_to_deactivate = $this->_message_resource_manager->get_message_type($message_type_name);
-        $this->_message_resource_manager->deactivate_message_type_for_messenger($message_type_name, $messenger_name);
-
-        return $this->_setup_response_message_for_deactivating_messenger_with_message_types(
-            $active_messenger,
-            $message_type_to_deactivate
-        );
-    }
-
-
-    /**
-     * This just initializes the defaults for activating messenger and message type responses.
-     */
-    protected function _prep_default_response_for_messenger_or_message_type_toggle()
-    {
-        $this->_template_args['data']['active_mts'] = [];
-        $this->_template_args['data']['mt_reload']  = [];
-    }
-
-
-    /**
-     * Setup appropriate response for activating a messenger and/or message types
-     *
-     * @param EE_messenger         $messenger
-     * @param EE_message_type|null $message_type
-     * @return bool
-     * @throws DomainException
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws ReflectionException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     */
-    protected function _setup_response_message_for_activating_messenger_with_message_types(
-        $messenger,
-        EE_Message_Type $message_type = null
-    ) {
-        // if $messenger isn't a valid messenger object then get out.
-        if (! $messenger instanceof EE_Messenger) {
-            EE_Error::add_error(
-                esc_html__('The messenger being activated is not a valid messenger', 'event_espresso'),
-                __FILE__,
-                __FUNCTION__,
-                __LINE__
-            );
-            return false;
-        }
-        // activated
-        if ($this->_template_args['data']['active_mts']) {
-            EE_Error::overwrite_success();
-            // activated a message type with the messenger
-            if ($message_type instanceof EE_message_type) {
-                EE_Error::add_success(
-                    sprintf(
-                        esc_html__(
-                            '%s message type has been successfully activated with the %s messenger',
-                            'event_espresso'
-                        ),
-                        ucwords($message_type->label['singular']),
-                        ucwords($messenger->label['singular'])
-                    )
-                );
-
-                // if message type was invoice then let's make sure we activate the invoice payment method.
-                if ($message_type->name === 'invoice') {
-                    EE_Registry::instance()->load_lib('Payment_Method_Manager');
-                    $pm = EE_Payment_Method_Manager::instance()->activate_a_payment_method_of_type('Invoice');
-                    if ($pm instanceof EE_Payment_Method) {
-                        EE_Error::add_attention(
-                            esc_html__(
-                                'Activating the invoice message type also automatically activates the invoice payment method.  If you do not wish the invoice payment method to be active, or to change its settings, visit the payment method admin page.',
-                                'event_espresso'
-                            )
-                        );
-                    }
-                }
-                // just toggles the entire messenger
-            } else {
-                EE_Error::add_success(
-                    sprintf(
-                        esc_html__('%s messenger has been successfully activated', 'event_espresso'),
-                        ucwords($messenger->label['singular'])
-                    )
-                );
-            }
-
-            return true;
-
-            // possible error condition. This will happen when our active_mts data is empty because it is validated for actual active
-            // message types after the activation process.  However its possible some messengers don't HAVE any default_message_types
-            // in which case we just give a success message for the messenger being successfully activated.
-        } else {
-            if (! $messenger->get_default_message_types()) {
-                // messenger doesn't have any default message types so still a success.
-                EE_Error::add_success(
-                    sprintf(
-                        esc_html__('%s messenger was successfully activated.', 'event_espresso'),
-                        ucwords($messenger->label['singular'])
-                    )
-                );
-
-                return true;
-            } else {
-                EE_Error::add_error(
-                    $message_type instanceof EE_message_type
-                    ? sprintf(
-                        esc_html__(
-                            '%s message type was not successfully activated with the %s messenger',
-                            'event_espresso'
-                        ),
-                        ucwords($message_type->label['singular']),
-                        ucwords($messenger->label['singular'])
-                    )
-                    : sprintf(
-                        esc_html__('%s messenger was not successfully activated', 'event_espresso'),
-                        ucwords($messenger->label['singular'])
-                    ),
-                    __FILE__,
-                    __FUNCTION__,
-                    __LINE__
-                );
-
-                return false;
-            }
-        }
-    }
-
-
-    /**
-     * This sets up the appropriate response for deactivating a messenger and/or message type.
-     *
-     * @param EE_messenger         $messenger
-     * @param EE_message_type|null $message_type
-     * @return bool
-     * @throws DomainException
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws ReflectionException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     */
-    protected function _setup_response_message_for_deactivating_messenger_with_message_types(
-        $messenger,
-        EE_message_type $message_type = null
-    ) {
-        EE_Error::overwrite_success();
-
-        // if $messenger isn't a valid messenger object then get out.
-        if (! $messenger instanceof EE_Messenger) {
-            EE_Error::add_error(
-                esc_html__('The messenger being deactivated is not a valid messenger', 'event_espresso'),
-                __FILE__,
-                __FUNCTION__,
-                __LINE__
-            );
-
-            return false;
-        }
-
-        if ($message_type instanceof EE_message_type) {
-            $message_type_name = $message_type->name;
-            EE_Error::add_success(
-                sprintf(
-                    esc_html__(
-                        '%s message type has been successfully deactivated for the %s messenger.',
-                        'event_espresso'
-                    ),
-                    ucwords($message_type->label['singular']),
-                    ucwords($messenger->label['singular'])
-                )
-            );
-        } else {
-            $message_type_name = '';
-            EE_Error::add_success(
-                sprintf(
-                    esc_html__('%s messenger has been successfully deactivated.', 'event_espresso'),
-                    ucwords($messenger->label['singular'])
-                )
-            );
-        }
-
-        // if messenger was html or message type was invoice then let's make sure we deactivate invoice payment method.
-        if (
-            $messenger->name === 'html'
-            && (
-                is_null($message_type)
-                || $message_type_name === 'invoice'
-            )
-        ) {
-            EE_Registry::instance()->load_lib('Payment_Method_Manager');
-            $count_updated = EE_Payment_Method_Manager::instance()->deactivate_payment_method('invoice');
-            if ($count_updated > 0) {
-                $msg = $message_type_name === 'invoice'
-                    ? esc_html__(
-                        'Deactivating the invoice message type also automatically deactivates the invoice payment method. In order for invoices to be generated the invoice message type must be active. If you completed this action by mistake, simply reactivate the invoice message type and then visit the payment methods admin page to reactivate the invoice payment method.',
-                        'event_espresso'
-                    )
-                    : esc_html__(
-                        'Deactivating the html messenger also automatically deactivates the invoice payment method.  In order for invoices to be generated the html messenger must be be active.  If you completed this action by mistake, simply reactivate the html messenger, then visit the payment methods admin page to reactivate the invoice payment method.',
-                        'event_espresso'
-                    );
-                EE_Error::add_attention($msg);
-            }
-        }
-
-        return true;
-    }
-
-
-    /**
-     * handles updating a message type form on messenger activation IF the message type has settings fields. (via ajax)
-     *
-     * @throws DomainException
-     * @throws EE_Error
-     * @throws EE_Error
-     */
-    public function update_mt_form()
-    {
-        if (! $this->_active_messenger_name || ! $this->_active_message_type_name) {
-            EE_Error::add_error(
-                esc_html__('Require message type or messenger to send an updated form', 'event_espresso'),
-                __FILE__,
-                __FUNCTION__,
-                __LINE__
-            );
-            $this->_return_json();
-        }
-
-        $message_types = $this->get_installed_message_types();
-        $message_type  = $message_types[ $this->_active_message_type_name ];
-        $messenger     = $this->_message_resource_manager->get_active_messenger($this->_active_messenger_name);
-        $content       = $this->_message_type_settings_content($message_type, $messenger, true);
-
-        $this->_template_args['success'] = true;
-        $this->_template_args['content'] = $content;
-        $this->_return_json();
-    }
-
-
-    /**
-     * this handles saving the settings for a messenger or message type
-     *
-     * @throws EE_Error
-     * @throws EE_Error
-     */
-    public function save_settings()
-    {
-        $type = $this->request->getRequestParam('type');
-        if (! $type) {
-            EE_Error::add_error(
-                esc_html__(
-                    'Cannot save settings because type is unknown (messenger settings or message type settings?)',
-                    'event_espresso'
-                ),
-                __FILE__,
-                __FUNCTION__,
-                __LINE__
-            );
-            $this->_template_args['error'] = true;
-            $this->_return_json();
-        }
-
-
-        if ($type === 'messenger') {
-            // this should be an array.
-            $settings  = $this->request->getRequestParam('messenger_settings', [], 'string', true);
-            $messenger = $settings['messenger'];
-            // remove messenger and message_types from settings array
-            unset($settings['messenger'], $settings['message_types']);
-            $this->_message_resource_manager->add_settings_for_messenger($messenger, $settings);
-        } elseif ($type === 'message_type') {
-            $settings     = $this->request->getRequestParam('message_type_settings', [], 'string', true);
-            $messenger    = $settings['messenger'];
-            $message_type = $settings['message_type'];
-            // remove messenger and message_types from settings array
-            unset($settings['messenger'], $settings['message_types']);
-            $this->_message_resource_manager->add_settings_for_message_type($messenger, $message_type, $settings);
-        }
-
-        // okay we should have the data all setup.  Now we just update!
-        $success = $this->_message_resource_manager->update_active_messengers_option();
-
-        if ($success) {
-            EE_Error::add_success(esc_html__('Settings updated', 'event_espresso'));
-        } else {
-            EE_Error::add_error(
-                esc_html__('Settings did not get updated', 'event_espresso'),
-                __FILE__,
-                __FUNCTION__,
-                __LINE__
-            );
-        }
-
-        $this->_template_args['success'] = $success;
-        $this->_return_json();
-    }
-
-
-
-
-    /**  EE MESSAGE PROCESSING ACTIONS **/
-
-
-    /**
-     * This immediately generates any EE_Message ID's that are selected that are EEM_Message::status_incomplete
-     * However, this does not send immediately, it just queues for sending.
-     *
-     * @throws EE_Error
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     * @throws InvalidArgumentException
-     * @throws ReflectionException
-     * @since 4.9.0
-     */
-    protected function _generate_now()
-    {
-        EED_Messages::generate_now($this->_get_msg_ids_from_request());
-        $this->_redirect_after_action(false, '', '', [], true);
-    }
-
-
-    /**
-     * This immediately generates AND sends any EE_Message's selected that are EEM_Message::status_incomplete or that
-     * are EEM_Message::status_resend or EEM_Message::status_idle
-     *
-     * @throws EE_Error
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     * @throws InvalidArgumentException
-     * @throws ReflectionException
-     * @since 4.9.0
-     */
-    protected function _generate_and_send_now()
-    {
-        EED_Messages::generate_and_send_now($this->_get_msg_ids_from_request());
-        $this->_redirect_after_action(false, '', '', [], true);
-    }
-
-
-    /**
-     * This queues any EEM_Message::status_sent EE_Message ids in the request for resending.
-     *
-     * @throws EE_Error
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     * @throws InvalidArgumentException
-     * @throws ReflectionException
-     * @since 4.9.0
-     */
-    protected function _queue_for_resending()
-    {
-        EED_Messages::queue_for_resending($this->_get_msg_ids_from_request());
-        $this->_redirect_after_action(false, '', '', [], true);
-    }
-
-
-    /**
-     *  This sends immediately any EEM_Message::status_idle or EEM_Message::status_resend messages in the queue
-     *
-     * @throws EE_Error
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     * @throws InvalidArgumentException
-     * @throws ReflectionException
-     * @since 4.9.0
-     */
-    protected function _send_now()
-    {
-        EED_Messages::send_now($this->_get_msg_ids_from_request());
-        $this->_redirect_after_action(false, '', '', [], true);
-    }
-
-
-    /**
-     * Deletes EE_messages for IDs in the request.
-     *
-     * @throws EE_Error
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     * @throws InvalidArgumentException
-     * @since 4.9.0
-     */
-    protected function _delete_ee_messages()
-    {
-        $MSG_IDs       = $this->_get_msg_ids_from_request();
-        $deleted_count = 0;
-        foreach ($MSG_IDs as $MSG_ID) {
-            if ($this->getMsgModel()->delete_by_ID($MSG_ID)) {
-                $deleted_count++;
-            }
-        }
-        if ($deleted_count) {
-            EE_Error::add_success(
-                esc_html(
-                    _n(
-                        'Message successfully deleted',
-                        'Messages successfully deleted',
-                        $deleted_count,
-                        'event_espresso'
-                    )
-                )
-            );
-        } else {
-            EE_Error::add_error(
-                _n('The message was not deleted.', 'The messages were not deleted', count($MSG_IDs), 'event_espresso'),
-                __FILE__,
-                __FUNCTION__,
-                __LINE__
-            );
-        }
-        $this->_redirect_after_action(false, '', '', [], true);
-    }
-
-
-    /**
-     *  This looks for 'MSG_ID' key in the request and returns an array of MSG_ID's if present.
-     *
-     * @return array
-     * @since 4.9.0
-     */
-    protected function _get_msg_ids_from_request()
-    {
-        $MSG_IDs = $this->request->getRequestParam('MSG_ID', [], 'string', true);
-        if (empty($MSG_IDs)) {
-            return [];
-        }
-        // if 'MSG_ID' was just a single ID (not an array)
-        // then $MSG_IDs will be something like [123] so $MSG_IDs[0] should be 123
-        // otherwise, $MSG_IDs was already an array where message IDs were used as the keys
-        return count($MSG_IDs) === 1 && isset($MSG_IDs[0])
-            ? $MSG_IDs
-            : array_keys($MSG_IDs);
-    }
+	}
+
+
+	/**
+	 * @param bool $new
+	 * @throws EE_Error
+	 * @throws ReflectionException
+	 */
+	protected function _insert_or_update_message_template($new = false)
+	{
+		$form_data    = $this->getMessageTemplateFormData();
+		$GRP_ID       = $form_data['GRP_ID'];
+		$messenger    = $form_data['MTP_messenger'];
+		$message_type = $form_data['MTP_message_type'];
+		$context      = $form_data['MTP_context'];
+
+		// if this is "new" then we need to generate the default contexts
+		// for the selected messenger/message_type for user to edit.
+		[$success, $query_args] = $new
+			? $this->generateNewTemplates($GRP_ID, $messenger, $message_type)
+			: $this->updateExistingTemplates($GRP_ID, $messenger, $message_type, $context, $form_data);
+
+		$success     = $success ? 1 : 0;
+		$action_desc = $new ? 'created' : 'updated';
+		$item_desc   = $this->generateUpdateDescription($messenger, $message_type, $context);
+		$override    = $this->performTestSendAfterUpdate($messenger, $message_type, $context);
+
+		$this->_redirect_after_action($success, $item_desc, $action_desc, $query_args, $override);
+	}
+
+
+	/**
+	 * retrieve and sanitize form data
+	 *
+	 * @return array
+	 * @since 4.10.29.p
+	 */
+	protected function getMessageTemplateFormData()
+	{
+		return [
+			'GRP_ID'           => $this->request->getRequestParam('GRP_ID', 0, 'int'),
+			'MTP_context'      => strtolower($this->request->getRequestParam('MTP_context', '')),
+			'MTP_messenger'    => strtolower($this->request->getRequestParam('MTP_messenger', '')),
+			'MTP_message_type' => strtolower($this->request->getRequestParam('MTP_message_type', '')),
+			'MTP_user_id'      => $this->request->getRequestParam('MTP_user_id', 0, 'int'),
+			'MTP_is_global'    => $this->request->getRequestParam('MTP_is_global', 0, 'int'),
+			'MTP_is_override'  => $this->request->getRequestParam('MTP_is_override', 0, 'int'),
+			'MTP_deleted'      => $this->request->getRequestParam('MTP_deleted', 0, 'int'),
+			'MTP_is_active'    => $this->request->getRequestParam('MTP_is_active', 0, 'int'),
+		];
+	}
+
+
+	/**
+	 * @param int    $GRP_ID
+	 * @param string $messenger
+	 * @param string $message_type
+	 * @return array no return on AJAX requests
+	 * @throws EE_Error
+	 * @throws ReflectionException
+	 * @since 4.10.29.p
+	 */
+	private function generateNewTemplates($GRP_ID, $messenger, $message_type)
+	{
+		$new_templates = $this->_generate_new_templates($messenger, [$message_type], $GRP_ID);
+		$success       = ! empty($new_templates);
+
+		// we return things differently if doing ajax
+		if ($this->request->isAjax()) {
+			$this->_template_args['success'] = $success;
+			$this->_template_args['error']   = ! $success;
+			$this->_template_args['content'] = '';
+			$this->_template_args['data']    = [
+				'grpID'        => $new_templates['GRP_ID'],
+				'templateName' => $new_templates['template_name'],
+			];
+			if ($success) {
+				EE_Error::overwrite_success();
+				EE_Error::add_success(
+					esc_html__(
+						'The new template has been created and automatically selected for this event.  You can edit the new template by clicking the edit button.  Note before this template is assigned to this event, the event must be saved.',
+						'event_espresso'
+					)
+				);
+			}
+			$this->_return_json();
+		}
+		return [
+			$success,
+			// 'query_args'
+			[
+				'id'      => $new_templates['GRP_ID'],
+				'context' => $new_templates['MTP_context'],
+				'action'  => 'edit_message_template',
+			],
+		];
+	}
+
+
+	/**
+	 * @param int    $GRP_ID
+	 * @param string $messenger
+	 * @param string $message_type
+	 * @param string $context
+	 * @param array  $form_data
+	 * @return array
+	 * @throws EE_Error
+	 * @since 4.10.29.p
+	 */
+	private function updateExistingTemplates(
+		$GRP_ID,
+		$messenger,
+		$message_type,
+		$context,
+		array $form_data
+	) {
+		$success         = false;
+		$template_fields = $this->getTemplateFields();
+		if ($template_fields) {
+			// if field data is valid, then success will be true
+			$success = $this->validateTemplateFields(
+				$messenger,
+				$message_type,
+				$context,
+				$template_fields
+			);
+			if ($success) {
+				$field_data = [];
+				foreach ($template_fields as $template_field => $content) {
+					// combine top-level form data with content for this field
+					$field_data = $this->getTemplateFieldFormData($content, $form_data);
+					$success    = $this->updateMessageTemplates($template_field, $field_data) ? $success : false;
+				}
+				// we can use the last set_column_values for the MTPG update
+				// (because its the same for all of these specific MTPs)
+				$success = $this->updateMessageTemplateGroup($field_data) ? $success : false;
+			}
+		}
+
+		return [
+			$success,
+			// 'query_args'
+			[
+				'id'      => $GRP_ID,
+				'context' => $context,
+				'action'  => 'edit_message_template',
+			],
+		];
+	}
+
+
+	/**
+	 * @return array
+	 * @since 4.10.29.p
+	 */
+	private function getTemplateFields()
+	{
+		$template_fields = $this->request->getRequestParam('MTP_template_fields', null, 'html', true);
+		if (empty($template_fields)) {
+			EE_Error::add_error(
+				esc_html__(
+					'There was a problem saving the template fields from the form because I didn\'t receive any actual template field data.',
+					'event_espresso'
+				),
+				__FILE__,
+				__FUNCTION__,
+				__LINE__
+			);
+			return null;
+		}
+		// messages content is expected to be escaped
+		return EEH_Array::addSlashesRecursively($template_fields);
+	}
+
+
+	/**
+	 * @param string $messenger
+	 * @param string $message_type
+	 * @param string $context
+	 * @param array  $template_fields
+	 * @return bool
+	 * @throws EE_Error
+	 * @since   4.10.29.p
+	 */
+	private function validateTemplateFields(
+		$messenger,
+		$message_type,
+		$context,
+		array $template_fields
+	) {
+		// first validate all fields!
+		// this filter allows client code to add its own validation to the template fields as well.
+		// returning an empty array means everything passed validation.
+		// errors in validation should be represented in an array with the following shape:
+		// array(
+		//   'fieldname' => array(
+		//          'msg' => 'error message'
+		//          'value' => 'value for field producing error'
+		// )
+		$custom_validation = (array) apply_filters(
+			'FHEE__Messages_Admin_Page___insert_or_update_message_template__validates',
+			[],
+			$template_fields,
+			$context,
+			$messenger,
+			$message_type
+		);
+
+		$system_validation = $this->getMtgModel()->validate(
+			$template_fields,
+			$context,
+			$messenger,
+			$message_type
+		);
+
+		$system_validation = ! is_array($system_validation) && $system_validation ? [] : $system_validation;
+		$validates         = array_merge($custom_validation, $system_validation);
+
+		// if $validate returned error messages (i.e. is_array()) then we need to process them and setup an
+		// appropriate response. HMM, dang this isn't correct, $validates will ALWAYS be an array.
+		//  WE need to make sure there is no actual error messages in validates.
+		if (empty($validates)) {
+			return true;
+		}
+
+		// add the transient so when the form loads we know which fields to highlight
+		$this->_add_transient('edit_message_template', $validates);
+		// setup notices
+		foreach ($validates as $error) {
+			if (isset($error['msg'])) {
+				EE_Error::add_error($error['msg'], __FILE__, __FUNCTION__, __LINE__);
+			}
+		}
+		return false;
+	}
+
+
+	/**
+	 * @param array $field_data
+	 * @param array $form_data
+	 * @return array
+	 * @since   4.10.29.p
+	 */
+	private function getTemplateFieldFormData(array $field_data, array $form_data)
+	{
+		return $form_data + [
+				'MTP_ID'             => $field_data['MTP_ID'],
+				'MTP_template_field' => $field_data['name'],
+				// if they aren't allowed to use all JS, restrict them to standard allowed post tags
+				'MTP_content'        => ! current_user_can('unfiltered_html')
+					? $this->sanitizeMessageTemplateContent($field_data['content'])
+					: $field_data['content'],
+			];
+	}
+
+
+	/**
+	 * @param string $template_field
+	 * @param array  $form_data
+	 * @return bool
+	 * @throws EE_Error
+	 * @since 4.10.29.p
+	 */
+	private function updateMessageTemplates($template_field, array $form_data)
+	{
+		$MTP_ID                  = $form_data['MTP_ID'];
+		$message_template_fields = [
+			'GRP_ID'             => $form_data['GRP_ID'],
+			'MTP_template_field' => $form_data['MTP_template_field'],
+			'MTP_context'        => $form_data['MTP_context'],
+			'MTP_content'        => $form_data['MTP_content'],
+		];
+
+		$hasMtpID = ! empty($MTP_ID);
+		// if we have a MTP_ID for this field then update it, otherwise insert.
+		// this has already been through the template field validator and sanitized, so it will be
+		// safe to insert this field.  Why insert?  This typically happens when we introduce a new
+		// message template field in a messenger/message type and existing users don't have the
+		// default setup for it.
+		// @link https://events.codebasehq.com/projects/event-espresso/tickets/9465
+		$updated = $hasMtpID
+			? $this->getMtpModel()->update($message_template_fields, [['MTP_ID' => $MTP_ID]])
+			: $this->getMtpModel()->insert($message_template_fields);
+
+		$insert_failed = ! $hasMtpID && ! $updated;
+		// updates will return 0 if the field was not changed (ie: no changes = nothing actually updated)
+		// but we won't consider that a problem, but if it returns false, then something went BOOM!
+		$update_failed = $hasMtpID && $updated === false;
+
+		if ($insert_failed || $update_failed) {
+			EE_Error::add_error(
+				sprintf(
+					esc_html__('%s field was NOT updated for some reason', 'event_espresso'),
+					$template_field
+				),
+				__FILE__,
+				__FUNCTION__,
+				__LINE__
+			);
+			return false;
+		}
+		return true;
+	}
+
+
+	/**
+	 * @param array $form_data
+	 * @return bool
+	 * @throws EE_Error
+	 * @since 4.10.29.p
+	 */
+	private function updateMessageTemplateGroup(array $form_data)
+	{
+		$GRP_ID  = $form_data['GRP_ID'];
+		$updated = $this->getMtgModel()->update(
+		// fields and values
+			[
+				'MTP_user_id'      => $form_data['MTP_user_id'],
+				'MTP_messenger'    => $form_data['MTP_messenger'],
+				'MTP_message_type' => $form_data['MTP_message_type'],
+				'MTP_is_global'    => $form_data['MTP_is_global'],
+				'MTP_is_override'  => $form_data['MTP_is_override'],
+				'MTP_deleted'      => $form_data['MTP_deleted'],
+				'MTP_is_active'    => $form_data['MTP_is_active'],
+				'MTP_name'         => $this->request->getRequestParam('ee_msg_non_global_fields[MTP_name]', ''),
+				'MTP_description'  => $this->request->getRequestParam(
+					'ee_msg_non_global_fields[MTP_description]',
+					''
+				),
+			],
+			// where
+			[['GRP_ID' => $GRP_ID]]
+		);
+
+		if ($updated === false) {
+			EE_Error::add_error(
+				sprintf(
+					esc_html__(
+						'The Message Template Group (%d) was NOT updated for some reason',
+						'event_espresso'
+					),
+					$form_data['GRP_ID']
+				),
+				__FILE__,
+				__FUNCTION__,
+				__LINE__
+			);
+			return false;
+		}
+		// k now we need to ensure the template_pack and template_variation fields are set.
+		$template_pack      = $this->request->getRequestParam('MTP_template_pack', 'default');
+		$template_variation = $this->request->getRequestParam('MTP_template_variation', 'default');
+
+		$message_template_group = $this->getMtgModel()->get_one_by_ID($GRP_ID);
+		if ($message_template_group instanceof EE_Message_Template_Group) {
+			$message_template_group->set_template_pack_name($template_pack);
+			$message_template_group->set_template_pack_variation($template_variation);
+		}
+		return true;
+	}
+
+
+	/**
+	 * recursively runs wp_kses() on message template content in a model safe manner
+	 *
+	 * @param array|string $content
+	 * @return array|string
+	 * @since   4.10.29.p
+	 */
+	private function sanitizeMessageTemplateContent($content)
+	{
+		if (is_array($content)) {
+			foreach ($content as $key => $value) {
+				$content[ $key ] = $this->sanitizeMessageTemplateContent($value);
+			}
+			return $content;
+		}
+		// remove slashes so wp_kses() works properly
+		// wp_kses_stripslashes() only removes slashes from double-quotes,
+		// so attributes using single quotes always appear invalid.
+		$content = stripslashes($content);
+		$content = wp_kses($content, wp_kses_allowed_html('post'));
+		// But currently the models expect slashed data, so after wp_kses()
+		// runs we need to re-slash the data. Sheesh.
+		// See https://events.codebasehq.com/projects/event-espresso/tickets/11211#update-47321587
+		return addslashes($content);
+	}
+
+
+	/**
+	 * @param string $messenger
+	 * @param string $message_type
+	 * @param string $context
+	 * @return string
+	 * @since 4.10.29.p
+	 */
+	private function generateUpdateDescription($messenger, $message_type, $context)
+	{
+		// need the message type and messenger objects to be able to use the labels for the notices
+		$messenger_object = $this->_message_resource_manager->get_messenger($messenger);
+		$messenger_label  = $messenger_object instanceof EE_messenger
+			? ucwords($messenger_object->label['singular'])
+			: '';
+
+		$message_type_object = $this->_message_resource_manager->get_message_type($message_type);
+		$message_type_label  = $message_type_object instanceof EE_message_type
+			? ucwords($message_type_object->label['singular'])
+			: '';
+
+		$context   = ucwords(str_replace('_', ' ', $context));
+		$item_desc = $messenger_label && $message_type_label
+			? $messenger_label . ' ' . $message_type_label . ' ' . $context . ' '
+			: '';
+		$item_desc .= 'Message Template';
+		return $item_desc;
+	}
+
+
+	/**
+	 * @param string $messenger
+	 * @param string $message_type
+	 * @param string $context
+	 * @return bool
+	 * @throws EE_Error
+	 * @throws ReflectionException
+	 * @since 4.10.29.p
+	 */
+	private function performTestSendAfterUpdate($messenger, $message_type, $context)
+	{
+		// was a test send triggered?
+		if ($this->request->requestParamIsSet('test_button')) {
+			EE_Error::overwrite_success();
+			$this->_do_test_send($context, $messenger, $message_type);
+			return true;
+		}
+		return false;
+	}
+
+
+	/**
+	 * processes a test send request to do an actual messenger delivery test for the given message template being tested
+	 *
+	 * @param string $context      what context being tested
+	 * @param string $messenger    messenger being tested
+	 * @param string $message_type message type being tested
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 * @throws ReflectionException
+	 */
+	protected function _do_test_send($context, $messenger, $message_type)
+	{
+		// set things up for preview
+		$this->request->setRequestParam('messenger', $messenger);
+		$this->request->setRequestParam('message_type', $message_type);
+		$this->request->setRequestParam('context', $context);
+		$GRP_ID = $this->request->getRequestParam('GRP_ID', 0, 'int');
+		$this->request->setRequestParam('GRP_ID', $GRP_ID);
+
+		$active_messenger  = $this->_message_resource_manager->get_active_messenger($messenger);
+		$test_settings_fld = $this->request->getRequestParam('test_settings_fld', [], 'string', true);
+
+		// let's save any existing fields that might be required by the messenger
+		if (
+			! empty($test_settings_fld)
+			&& $active_messenger instanceof EE_messenger
+			&& apply_filters(
+				'FHEE__Messages_Admin_Page__do_test_send__set_existing_test_settings',
+				true,
+				$test_settings_fld,
+				$active_messenger
+			)
+		) {
+			$active_messenger->set_existing_test_settings($test_settings_fld);
+		}
+
+		/**
+		 * Use filter to add additional controls on whether message can send or not
+		 */
+		if (
+			apply_filters(
+				'FHEE__Messages_Admin_Page__do_test_send__can_send',
+				true,
+				$context,
+				$this->request->requestParams(),
+				$messenger,
+				$message_type
+			)
+		) {
+			if (EEM_Event::instance()->count() > 0) {
+				$success = $this->_preview_message(true);
+				if ($success) {
+					EE_Error::add_success(esc_html__('Test message sent', 'event_espresso'));
+				} else {
+					EE_Error::add_error(
+						esc_html__('The test message was not sent', 'event_espresso'),
+						__FILE__,
+						__FUNCTION__,
+						__LINE__
+					);
+				}
+			} else {
+				$this->noEventsErrorMessage(true);
+			}
+		}
+	}
+
+
+	/**
+	 * _generate_new_templates
+	 * This will handle the messenger, message_type selection when "adding a new custom template" for an event and will
+	 * automatically create the defaults for the event.  The user would then be redirected to edit the default context
+	 * for the event.
+	 *
+	 *
+	 * @param string $messenger      the messenger we are generating templates for
+	 * @param array  $message_types  array of message types that the templates are generated for.
+	 * @param int    $GRP_ID         If this is a custom template being generated then a GRP_ID needs to be included to
+	 *                               indicate the message_template_group being used as the base.
+	 *
+	 * @param bool   $global
+	 *
+	 * @return array|bool array of data required for the redirect to the correct edit page or bool if
+	 *                               encountering problems.
+	 * @throws EE_Error
+	 * @throws ReflectionException
+	 */
+	protected function _generate_new_templates($messenger, $message_types, $GRP_ID = 0, $global = false)
+	{
+		// if no $message_types are given then that's okay... this may be a messenger that just adds shortcodes, so we
+		// just don't generate any templates.
+		if (empty($message_types)) {
+			return [];
+		}
+
+		$templates = EEH_MSG_Template::generate_new_templates($messenger, $message_types, $GRP_ID, $global);
+		return $templates[0];
+	}
+
+
+	/**
+	 * [_trash_or_restore_message_template]
+	 *
+	 * @param boolean $trash  whether to move an item to trash/restore (TRUE) or restore it (FALSE)
+	 * @param boolean $all    whether this is going to trash/restore all contexts within a template group (TRUE) OR just
+	 *                        an individual context (FALSE).
+	 * @return void
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 */
+	protected function _trash_or_restore_message_template($trash = true, $all = false)
+	{
+		do_action('AHEE_log', __FILE__, __FUNCTION__, '');
+
+		$success = 1;
+
+		// incoming GRP_IDs
+		if ($all) {
+			// Checkboxes
+			$checkboxes = $this->request->getRequestParam('checkbox', [], 'int', true);
+			if (! empty($checkboxes)) {
+				// if array has more than one element then success message should be plural.
+				// todo: what about nonce?
+				$success = count($checkboxes) > 1 ? 2 : 1;
+
+				// cycle through checkboxes
+				while (list($GRP_ID, $value) = each($checkboxes)) {
+					$trashed_or_restored = $trash
+						? $this->getMtgModel()->delete_by_ID($GRP_ID)
+						: $this->getMtgModel()->restore_by_ID($GRP_ID);
+					if (! $trashed_or_restored) {
+						$success = 0;
+					}
+				}
+			} else {
+				// grab single GRP_ID and handle
+				$GRP_ID = $this->request->getRequestParam('id', 0, 'int');
+				if (! empty($GRP_ID)) {
+					$trashed_or_restored = $trash
+						? $this->getMtgModel()->delete_by_ID($GRP_ID)
+						: $this->getMtgModel()->restore_by_ID($GRP_ID);
+					if (! $trashed_or_restored) {
+						$success = 0;
+					}
+				} else {
+					$success = 0;
+				}
+			}
+		}
+
+		$action_desc = $trash
+			? esc_html__('moved to the trash', 'event_espresso')
+			: esc_html__('restored', 'event_espresso');
+
+		$template_switch = $this->request->getRequestParam('template_switch', false, 'bool');
+		$action_desc     = $template_switch ? esc_html__('switched', 'event_espresso') : $action_desc;
+
+		$item_desc = $all ? _n(
+			'Message Template Group',
+			'Message Template Groups',
+			$success,
+			'event_espresso'
+		) : _n('Message Template Context', 'Message Template Contexts', $success, 'event_espresso');
+
+		$item_desc = $template_switch
+			? _n('template', 'templates', $success, 'event_espresso')
+			: $item_desc;
+
+		$this->_redirect_after_action($success, $item_desc, $action_desc, []);
+	}
+
+
+	/**
+	 * [_delete_message_template]
+	 * NOTE: this handles not only the deletion of the groups but also all the templates belonging to that group.
+	 *
+	 * @return void
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 * @throws ReflectionException
+	 */
+	protected function _delete_message_template()
+	{
+		do_action('AHEE_log', __FILE__, __FUNCTION__, '');
+
+		// checkboxes
+		$checkboxes = $this->request->getRequestParam('checkbox', [], 'int', true);
+		if (! empty($checkboxes)) {
+			// if array has more than one element then success message should be plural
+			$success = count($checkboxes) > 1 ? 2 : 1;
+
+			// cycle through bulk action checkboxes
+			while (list($GRP_ID, $value) = each($checkboxes)) {
+				$success = $this->_delete_mtp_permanently($GRP_ID) ? $success : false;
+			}
+		} else {
+			// grab single grp_id and delete
+			$GRP_ID  = $this->request->getRequestParam('id', 0, 'int');
+			$success = $this->_delete_mtp_permanently($GRP_ID);
+		}
+
+		$this->_redirect_after_action($success, 'Message Templates', 'deleted', []);
+	}
+
+
+	/**
+	 * helper for permanently deleting a mtP group and all related message_templates
+	 *
+	 * @param int  $GRP_ID        The group being deleted
+	 * @param bool $include_group whether to delete the Message Template Group as well.
+	 * @return bool boolean to indicate the success of the deletes or not.
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 * @throws ReflectionException
+	 * @throws ReflectionException
+	 */
+	private function _delete_mtp_permanently($GRP_ID, $include_group = true)
+	{
+		$success = true;
+		// first let's GET this group
+		$MTG = $this->getMtgModel()->get_one_by_ID($GRP_ID);
+		// then delete permanently all the related Message Templates
+		$deleted = $MTG->delete_related_permanently('Message_Template');
+
+		if ($deleted === 0) {
+			$success = false;
+		}
+
+		// now delete permanently this particular group
+
+		if ($include_group && ! $MTG->delete_permanently()) {
+			$success = false;
+		}
+
+		return $success;
+	}
+
+
+	/**
+	 *    _learn_more_about_message_templates_link
+	 *
+	 * @access protected
+	 * @return string
+	 */
+	protected function _learn_more_about_message_templates_link()
+	{
+		return '<a class="hidden" style="margin:0 20px; cursor:pointer; font-size:12px;" >'
+			   . esc_html__('learn more about how message templates works', 'event_espresso')
+			   . '</a>';
+	}
+
+
+	/**
+	 * Used for setting up messenger/message type activation.  This loads up the initial view.  The rest is handled by
+	 * ajax and other routes.
+	 *
+	 * @return void
+	 * @throws DomainException
+	 * @throws EE_Error
+	 */
+	protected function _settings()
+	{
+		$this->_set_m_mt_settings();
+
+		// let's setup the messenger tabs
+		$this->_template_args['admin_page_header'] = EEH_Tabbed_Content::tab_text_links(
+			$this->_m_mt_settings['messenger_tabs'],
+			'messenger_links',
+			'|',
+			$this->request->getRequestParam('selected_messenger', 'email')
+		);
+
+		$this->_template_args['before_admin_page_content'] = '<div class="ui-widget ui-helper-clearfix">';
+		$this->_template_args['after_admin_page_content']  = '</div><!-- end .ui-widget -->';
+
+		$this->display_admin_page_with_sidebar();
+	}
+
+
+	/**
+	 * This sets the $_m_mt_settings property for when needed (used on the Messages settings page)
+	 *
+	 * @access protected
+	 * @return void
+	 * @throws DomainException
+	 */
+	protected function _set_m_mt_settings()
+	{
+		// first if this is already set then lets get out no need to regenerate data.
+		if (! empty($this->_m_mt_settings)) {
+			return;
+		}
+
+		// get all installed messengers and message_types
+		$messengers    = $this->_message_resource_manager->installed_messengers();
+		$message_types = $this->_message_resource_manager->installed_message_types();
+
+
+		// assemble the array for the _tab_text_links helper
+
+		foreach ($messengers as $messenger) {
+			$active = $this->_message_resource_manager->is_messenger_active($messenger->name);
+			$class = 'ee-messenger-' .  sanitize_key($messenger->label['singular']);
+			$this->_m_mt_settings['messenger_tabs'][ $messenger->name ] = [
+				'label' => ucwords($messenger->label['singular']),
+				'class' => $active ? "{$class} messenger-active" : $class,
+				'href'  => $messenger->name,
+				'title' => esc_html__('Modify this Messenger', 'event_espresso'),
+				'slug'  => $messenger->name,
+				'obj'   => $messenger,
+				'icon' => $active
+					? '<span class="dashicons dashicons-yes-alt"></span>'
+					: '<span class="dashicons dashicons-remove"></span>',
+			];
+
+
+			$message_types_for_messenger = $messenger->get_valid_message_types();
+
+			foreach ($message_types as $message_type) {
+				// first we need to verify that this message type is valid with this messenger. Cause if it isn't then
+				// it shouldn't show in either the inactive OR active metabox.
+				if (! in_array($message_type->name, $message_types_for_messenger, true)) {
+					continue;
+				}
+
+				$a_or_i = $this->_message_resource_manager->is_message_type_active_for_messenger(
+					$messenger->name,
+					$message_type->name
+				)
+					? 'active'
+					: 'inactive';
+
+				$this->_m_mt_settings['message_type_tabs'][ $messenger->name ][ $a_or_i ][ $message_type->name ] = [
+					'label'    => ucwords($message_type->label['singular']),
+					'class'    => 'message-type-' . $a_or_i,
+					'slug_id'  => $message_type->name . '-messagetype-' . $messenger->name,
+					'mt_nonce' => wp_create_nonce($message_type->name . '_nonce'),
+					'href'     => 'espresso_' . $message_type->name . '_message_type_settings',
+					'title'    => $a_or_i === 'active'
+						? esc_html__('Drag this message type to the Inactive window to deactivate', 'event_espresso')
+						: esc_html__('Drag this message type to the messenger to activate', 'event_espresso'),
+					'content'  => $a_or_i === 'active'
+						? $this->_message_type_settings_content($message_type, $messenger, true)
+						: $this->_message_type_settings_content($message_type, $messenger),
+					'slug'     => $message_type->name,
+					'active'   => $a_or_i === 'active',
+					'obj'      => $message_type,
+				];
+			}
+		}
+	}
+
+
+	/**
+	 * This just prepares the content for the message type settings
+	 *
+	 * @param EE_message_type $message_type The message type object
+	 * @param EE_messenger    $messenger    The messenger object
+	 * @param boolean         $active       Whether the message type is active or not
+	 * @return string html output for the content
+	 * @throws DomainException
+	 */
+	protected function _message_type_settings_content($message_type, $messenger, $active = false)
+	{
+		// get message type fields
+		$fields                                         = $message_type->get_admin_settings_fields();
+		$settings_template_args['template_form_fields'] = '';
+
+		if (! empty($fields) && $active) {
+			$existing_settings = $message_type->get_existing_admin_settings($messenger->name);
+			foreach ($fields as $fldname => $fldprops) {
+				$field_id                         = $messenger->name . '-' . $message_type->name . '-' . $fldname;
+				$template_form_field[ $field_id ] = [
+					'name'       => 'message_type_settings[' . $fldname . ']',
+					'label'      => $fldprops['label'],
+					'input'      => $fldprops['field_type'],
+					'type'       => $fldprops['value_type'],
+					'required'   => $fldprops['required'],
+					'validation' => $fldprops['validation'],
+					'value'      => isset($existing_settings[ $fldname ])
+						? $existing_settings[ $fldname ]
+						: $fldprops['default'],
+					'options'    => isset($fldprops['options'])
+						? $fldprops['options']
+						: [],
+					'default'    => isset($existing_settings[ $fldname ])
+						? $existing_settings[ $fldname ]
+						: $fldprops['default'],
+					'css_class'  => 'no-drag',
+					'format'     => $fldprops['format'],
+				];
+			}
+
+
+			$settings_template_args['template_form_fields'] = ! empty($template_form_field)
+				? $this->_generate_admin_form_fields(
+					$template_form_field,
+					'string',
+					'ee_mt_activate_form'
+				)
+				: '';
+		}
+
+		$settings_template_args['description'] = $message_type->description;
+		// we also need some hidden fields
+		$hidden_fields = [
+			'message_type_settings[messenger]' . $message_type->name    => [
+				'type'  => 'hidden',
+				'value' => $messenger->name,
+			],
+			'message_type_settings[message_type]' . $message_type->name => [
+				'type'  => 'hidden',
+				'value' => $message_type->name,
+			],
+			'type' . $message_type->name                                => [
+				'type'  => 'hidden',
+				'value' => 'message_type',
+			],
+		];
+
+		$settings_template_args['hidden_fields'] = $this->_generate_admin_form_fields(
+			$hidden_fields,
+			'array'
+		);
+		$settings_template_args['show_form']     = empty($settings_template_args['template_form_fields'])
+			? ' hidden'
+			: '';
+
+
+		$template = EE_MSG_TEMPLATE_PATH . 'ee_msg_mt_settings_content.template.php';
+		return EEH_Template::display_template($template, $settings_template_args, true);
+	}
+
+
+	/**
+	 * Generate all the metaboxes for the message types and register them for the messages settings page.
+	 *
+	 * @access protected
+	 * @return void
+	 * @throws DomainException
+	 */
+	protected function _messages_settings_metaboxes()
+	{
+		$this->_set_m_mt_settings();
+		$m_boxes         = $mt_boxes = [];
+		$m_template_args = $mt_template_args = [];
+
+		$selected_messenger = $this->request->getRequestParam('selected_messenger', 'email');
+
+		if (isset($this->_m_mt_settings['messenger_tabs'])) {
+			foreach ($this->_m_mt_settings['messenger_tabs'] as $messenger => $tab_array) {
+				$is_messenger_active = $this->_message_resource_manager->is_messenger_active($messenger);
+				$hide_on_message     = $is_messenger_active ? '' : 'hidden';
+				$hide_off_message    = $is_messenger_active ? 'hidden' : '';
+
+				// messenger meta boxes
+				$active         = $selected_messenger === $messenger;
+				$active_mt_tabs = isset($this->_m_mt_settings['message_type_tabs'][ $messenger ]['active'])
+					? $this->_m_mt_settings['message_type_tabs'][ $messenger ]['active']
+					: '';
+
+				$m_boxes[ $messenger . '_a_box' ] = sprintf(
+					esc_html__('%s Settings', 'event_espresso'),
+					$tab_array['label']
+				);
+
+				$m_template_args[ $messenger . '_a_box' ] = [
+					'active_message_types'   => ! empty($active_mt_tabs) ? $this->_get_mt_tabs($active_mt_tabs) : '',
+					'inactive_message_types' => isset(
+						$this->_m_mt_settings['message_type_tabs'][ $messenger ]['inactive']
+					)
+						? $this->_get_mt_tabs($this->_m_mt_settings['message_type_tabs'][ $messenger ]['inactive'])
+						: '',
+					'content'                => $this->_get_messenger_box_content($tab_array['obj']),
+					'hidden'                 => $active ? '' : ' hidden',
+					'hide_on_message'        => $hide_on_message,
+					'messenger'              => $messenger,
+					'active'                 => $active,
+				];
+
+				// message type meta boxes
+				// (which is really just the inactive container for each messenger
+				// showing inactive message types for that messenger)
+				$mt_boxes[ $messenger . '_i_box' ]         = esc_html__('Inactive Message Types', 'event_espresso');
+				$mt_template_args[ $messenger . '_i_box' ] = [
+					'active_message_types'   => ! empty($active_mt_tabs) ? $this->_get_mt_tabs($active_mt_tabs) : '',
+					'inactive_message_types' => isset(
+						$this->_m_mt_settings['message_type_tabs'][ $messenger ]['inactive']
+					)
+						? $this->_get_mt_tabs($this->_m_mt_settings['message_type_tabs'][ $messenger ]['inactive'])
+						: '',
+					'hidden'                 => $active ? '' : ' hidden',
+					'hide_on_message'        => $hide_on_message,
+					'hide_off_message'       => $hide_off_message,
+					'messenger'              => $messenger,
+					'active'                 => $active,
+				];
+			}
+		}
+
+
+		// register messenger metaboxes
+		$m_template_path = EE_MSG_TEMPLATE_PATH . 'ee_msg_details_messenger_mt_meta_box.template.php';
+		foreach ($m_boxes as $box => $label) {
+			$callback_args = ['template_path' => $m_template_path, 'template_args' => $m_template_args[ $box ]];
+			$msgr          = str_replace('_a_box', '', $box);
+			$this->addMetaBox(
+				'espresso_' . $msgr . '_settings',
+				$label,
+				function ($post, $metabox) {
+					EEH_Template::display_template(
+						$metabox['args']['template_path'],
+						$metabox['args']['template_args']
+					);
+				},
+				$this->_current_screen->id,
+				'normal',
+				'high',
+				$callback_args
+			);
+		}
+
+		// register message type metaboxes
+		$mt_template_path = EE_MSG_TEMPLATE_PATH . 'ee_msg_details_messenger_meta_box.template.php';
+		foreach ($mt_boxes as $box => $label) {
+			$callback_args = [
+				'template_path' => $mt_template_path,
+				'template_args' => $mt_template_args[ $box ],
+			];
+			$mt            = str_replace('_i_box', '', $box);
+			$this->addMetaBox(
+				'espresso_' . $mt . '_inactive_mts',
+				$label,
+				function ($post, $metabox) {
+					EEH_Template::display_template(
+						$metabox['args']['template_path'],
+						$metabox['args']['template_args']
+					);
+				},
+				$this->_current_screen->id,
+				'side',
+				'high',
+				$callback_args
+			);
+		}
+
+		// register metabox for global messages settings but only when on the main site.  On single site installs this
+		// will always result in the metabox showing, on multisite installs the metabox will only show on the main site.
+		if (is_main_site()) {
+			$this->addMetaBox(
+				'espresso_global_message_settings',
+				esc_html__('Global Message Settings', 'event_espresso'),
+				[$this, 'global_messages_settings_metabox_content'],
+				$this->_current_screen->id,
+				'normal',
+				'low',
+				[]
+			);
+		}
+	}
+
+
+	/**
+	 *  This generates the content for the global messages settings metabox.
+	 *
+	 * @return void
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws ReflectionException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 */
+	public function global_messages_settings_metabox_content()
+	{
+		$form = $this->_generate_global_settings_form();
+		echo wp_kses(
+			$form->form_open(
+				$this->add_query_args_and_nonce(['action' => 'update_global_settings'], EE_MSG_ADMIN_URL),
+				'POST'
+			),
+			AllowedTags::getWithFormTags()
+		);
+		echo wp_kses($form->get_html(), AllowedTags::getWithFormTags());
+		echo wp_kses($form->form_close(), AllowedTags::getWithFormTags());
+	}
+
+
+	/**
+	 * This generates and returns the form object for the global messages settings.
+	 *
+	 * @return EE_Form_Section_Proper
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws ReflectionException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 */
+	protected function _generate_global_settings_form()
+	{
+		/** @var EE_Network_Core_Config $network_config */
+		$network_config = EE_Registry::instance()->NET_CFG->core;
+
+		return new EE_Form_Section_Proper(
+			[
+				'name'            => 'global_messages_settings',
+				'html_id'         => 'global_messages_settings',
+				'html_class'      => 'form-table',
+				'layout_strategy' => new EE_Admin_Two_Column_Layout(),
+				'subsections'     => apply_filters(
+					'FHEE__Messages_Admin_Page__global_messages_settings_metabox_content__form_subsections',
+					[
+						'do_messages_on_same_request' => new EE_Select_Input(
+							[
+								true  => esc_html__('On the same request', 'event_espresso'),
+								false => esc_html__('On a separate request', 'event_espresso'),
+							],
+							[
+								'default'         => $network_config->do_messages_on_same_request,
+								'html_label_text' => esc_html__(
+									'Generate and send all messages:',
+									'event_espresso'
+								),
+								'html_help_text'  => esc_html__(
+									'By default the messages system uses a more efficient means of processing messages on separate requests and utilizes the wp-cron scheduling system.  This makes things execute faster for people registering for your events.  However, if the wp-cron system is disabled on your site and there is no alternative in place, then you can change this so messages are always executed on the same request.',
+									'event_espresso'
+								),
+							]
+						),
+						'delete_threshold'            => new EE_Select_Input(
+							[
+								0  => esc_html__('Forever', 'event_espresso'),
+								3  => esc_html__('3 Months', 'event_espresso'),
+								6  => esc_html__('6 Months', 'event_espresso'),
+								9  => esc_html__('9 Months', 'event_espresso'),
+								12 => esc_html__('12 Months', 'event_espresso'),
+								24 => esc_html__('24 Months', 'event_espresso'),
+								36 => esc_html__('36 Months', 'event_espresso'),
+							],
+							[
+								'default'         => EE_Registry::instance()->CFG->messages->delete_threshold,
+								'html_label_text' => esc_html__('Cleanup of old messages:', 'event_espresso'),
+								'html_help_text'  => esc_html__(
+									'You can control how long a record of processed messages is kept via this option.',
+									'event_espresso'
+								),
+							]
+						),
+						'update_settings'             => new EE_Submit_Input(
+							[
+								'default'         => esc_html__('Update', 'event_espresso'),
+								'html_label_text' => '',
+							]
+						),
+					]
+				),
+			]
+		);
+	}
+
+
+	/**
+	 * This handles updating the global settings set on the admin page.
+	 *
+	 * @throws EE_Error
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidArgumentException
+	 * @throws ReflectionException
+	 */
+	protected function _update_global_settings()
+	{
+		/** @var EE_Network_Core_Config $network_config */
+		$network_config  = EE_Registry::instance()->NET_CFG->core;
+		$messages_config = EE_Registry::instance()->CFG->messages;
+		$form            = $this->_generate_global_settings_form();
+		if ($form->was_submitted()) {
+			$form->receive_form_submission();
+			if ($form->is_valid()) {
+				$valid_data = $form->valid_data();
+				foreach ($valid_data as $property => $value) {
+					$setter = 'set_' . $property;
+					if (method_exists($network_config, $setter)) {
+						$network_config->{$setter}($value);
+					} elseif (
+						property_exists($network_config, $property)
+						&& $network_config->{$property} !== $value
+					) {
+						$network_config->{$property} = $value;
+					} elseif (
+						property_exists($messages_config, $property)
+						&& $messages_config->{$property} !== $value
+					) {
+						$messages_config->{$property} = $value;
+					}
+				}
+				// only update if the form submission was valid!
+				EE_Registry::instance()->NET_CFG->update_config(true, false);
+				EE_Registry::instance()->CFG->update_espresso_config();
+				EE_Error::overwrite_success();
+				EE_Error::add_success(esc_html__('Global message settings were updated', 'event_espresso'));
+			}
+		}
+		$this->_redirect_after_action(0, '', '', ['action' => 'settings'], true);
+	}
+
+
+	/**
+	 * this prepares the messenger tabs that can be dragged in and out of messenger boxes to activate/deactivate
+	 *
+	 * @param array $tab_array This is an array of message type tab details used to generate the tabs
+	 * @return string html formatted tabs
+	 * @throws DomainException
+	 */
+	protected function _get_mt_tabs($tab_array)
+	{
+		$tab_array = (array) $tab_array;
+		$template  = EE_MSG_TEMPLATE_PATH . 'ee_msg_details_mt_settings_tab_item.template.php';
+		$tabs      = '';
+
+		foreach ($tab_array as $tab) {
+			$tabs .= EEH_Template::display_template($template, $tab, true);
+		}
+
+		return $tabs;
+	}
+
+
+	/**
+	 * This prepares the content of the messenger meta box admin settings
+	 *
+	 * @param EE_messenger $messenger The messenger we're setting up content for
+	 * @return string html formatted content
+	 * @throws DomainException
+	 */
+	protected function _get_messenger_box_content(EE_messenger $messenger)
+	{
+
+		$fields = $messenger->get_admin_settings_fields();
+
+		$settings_template_args['template_form_fields'] = '';
+		// is $messenger active?
+		$settings_template_args['active'] = $this->_message_resource_manager->is_messenger_active($messenger->name);
+
+
+		if (! empty($fields)) {
+			$existing_settings = $messenger->get_existing_admin_settings();
+
+			foreach ($fields as $field_name => $field_props) {
+				$field_id                         = $messenger->name . '-' . $field_name;
+				$template_form_field[ $field_id ] = [
+					'name'       => 'messenger_settings[' . $field_id . ']',
+					'label'      => $field_props['label'],
+					'input'      => $field_props['field_type'],
+					'type'       => $field_props['value_type'],
+					'required'   => $field_props['required'],
+					'validation' => $field_props['validation'],
+					'value'      => $existing_settings[ $field_id ] ?? $field_props['default'],
+					'css_class'  => '',
+					'format'     => $field_props['format'],
+				];
+			}
+
+			$settings_template_args['template_form_fields'] = ! empty($template_form_field)
+				? $this->_generate_admin_form_fields($template_form_field, 'string', 'ee_m_activate_form')
+				: '';
+		}
+
+		// we also need some hidden fields
+		$settings_template_args['hidden_fields'] = [
+			'messenger_settings[messenger]' . $messenger->name => [
+				'type'  => 'hidden',
+				'value' => $messenger->name,
+			],
+			'type' . $messenger->name                          => [
+				'type'  => 'hidden',
+				'value' => 'messenger',
+			],
+		];
+
+		// make sure any active message types that are existing are included in the hidden fields
+		if (isset($this->_m_mt_settings['message_type_tabs'][ $messenger->name ]['active'])) {
+			foreach ($this->_m_mt_settings['message_type_tabs'][ $messenger->name ]['active'] as $mt => $values) {
+				$settings_template_args['hidden_fields'][ 'messenger_settings[message_types][' . $mt . ']' ] = [
+					'type'  => 'hidden',
+					'value' => $mt,
+				];
+			}
+		}
+		$settings_template_args['hidden_fields'] = $this->_generate_admin_form_fields(
+			$settings_template_args['hidden_fields'],
+			'array'
+		);
+		$active                                  =
+			$this->_message_resource_manager->is_messenger_active($messenger->name);
+
+		$settings_template_args['messenger']           = $messenger->name;
+		$settings_template_args['description']         = $messenger->description;
+		$settings_template_args['show_hide_edit_form'] = $active ? '' : ' hidden';
+
+
+		$settings_template_args['show_hide_edit_form'] = $this->_message_resource_manager->is_messenger_active(
+			$messenger->name
+		)
+			? $settings_template_args['show_hide_edit_form']
+			: ' hidden';
+
+		$settings_template_args['show_hide_edit_form'] = empty($settings_template_args['template_form_fields'])
+			? ' hidden'
+			: $settings_template_args['show_hide_edit_form'];
+
+
+		$settings_template_args['on_off_action'] = $active ? 'messenger-off' : 'messenger-on';
+		$settings_template_args['nonce']         = wp_create_nonce('activate_' . $messenger->name . '_toggle_nonce');
+		$settings_template_args['on_off_status'] = $active;
+		$template                                = EE_MSG_TEMPLATE_PATH . 'ee_msg_m_settings_content.template.php';
+		return EEH_Template::display_template(
+			$template,
+			$settings_template_args,
+			true
+		);
+	}
+
+
+	/**
+	 * used by ajax on the messages settings page to activate|deactivate the messenger
+	 *
+	 * @throws DomainException
+	 * @throws EE_Error
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidArgumentException
+	 * @throws ReflectionException
+	 */
+	public function activate_messenger_toggle()
+	{
+		$success = true;
+		$this->_prep_default_response_for_messenger_or_message_type_toggle();
+		// let's check that we have required data
+
+		if (! $this->_active_messenger_name) {
+			EE_Error::add_error(
+				esc_html__('Messenger name needed to toggle activation. None given', 'event_espresso'),
+				__FILE__,
+				__FUNCTION__,
+				__LINE__
+			);
+			$success = false;
+		}
+
+		// do a nonce check here since we're not arriving via a normal route
+		$nonce     = $this->request->getRequestParam('activate_nonce', '');
+		$nonce_ref = "activate_{$this->_active_messenger_name}_toggle_nonce";
+
+		$this->_verify_nonce($nonce, $nonce_ref);
+
+
+		$status = $this->request->getRequestParam('status');
+		if (! $status) {
+			EE_Error::add_error(
+				esc_html__(
+					'Messenger status needed to know whether activation or deactivation is happening. No status is given',
+					'event_espresso'
+				),
+				__FILE__,
+				__FUNCTION__,
+				__LINE__
+			);
+			$success = false;
+		}
+
+		// do check to verify we have a valid status.
+		if ($status !== 'off' && $status !== 'on') {
+			EE_Error::add_error(
+				sprintf(
+					esc_html__('The given status (%s) is not valid. Must be "off" or "on"', 'event_espresso'),
+					$status
+				),
+				__FILE__,
+				__FUNCTION__,
+				__LINE__
+			);
+			$success = false;
+		}
+
+		if ($success) {
+			// made it here?  Stop dawdling then!!
+			$success = $status === 'off'
+				? $this->_deactivate_messenger($this->_active_messenger_name)
+				: $this->_activate_messenger($this->_active_messenger_name);
+		}
+
+		$this->_template_args['success'] = $success;
+
+		// no special instructions so let's just do the json return (which should automatically do all the special stuff).
+		$this->_return_json();
+	}
+
+
+	/**
+	 * used by ajax from the messages settings page to activate|deactivate a message type
+	 *
+	 * @throws DomainException
+	 * @throws EE_Error
+	 * @throws ReflectionException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidArgumentException
+	 */
+	public function activate_mt_toggle()
+	{
+		$success = true;
+		$this->_prep_default_response_for_messenger_or_message_type_toggle();
+
+		// let's make sure we have the necessary data
+		if (! $this->_active_message_type_name) {
+			EE_Error::add_error(
+				esc_html__('Message Type name needed to toggle activation. None given', 'event_espresso'),
+				__FILE__,
+				__FUNCTION__,
+				__LINE__
+			);
+			$success = false;
+		}
+
+		if (! $this->_active_messenger_name) {
+			EE_Error::add_error(
+				esc_html__('Messenger name needed to toggle activation. None given', 'event_espresso'),
+				__FILE__,
+				__FUNCTION__,
+				__LINE__
+			);
+			$success = false;
+		}
+
+		$status = $this->request->getRequestParam('status');
+		if (! $status) {
+			EE_Error::add_error(
+				esc_html__(
+					'Messenger status needed to know whether activation or deactivation is happening. No status is given',
+					'event_espresso'
+				),
+				__FILE__,
+				__FUNCTION__,
+				__LINE__
+			);
+			$success = false;
+		}
+
+
+		// do check to verify we have a valid status.
+		if ($status !== 'activate' && $status !== 'deactivate') {
+			EE_Error::add_error(
+				sprintf(
+					esc_html__('The given status (%s) is not valid. Must be "active" or "inactive"', 'event_espresso'),
+					$status
+				),
+				__FILE__,
+				__FUNCTION__,
+				__LINE__
+			);
+			$success = false;
+		}
+
+
+		// do a nonce check here since we're not arriving via a normal route
+		$nonce = $this->request->getRequestParam('mt_nonce', '');
+		$this->_verify_nonce($nonce, "{$this->_active_message_type_name}_nonce");
+
+		if ($success) {
+			// made it here? um, what are you waiting for then?
+			$success = $status === 'deactivate'
+				? $this->_deactivate_message_type_for_messenger(
+					$this->_active_messenger_name,
+					$this->_active_message_type_name
+				)
+				: $this->_activate_message_type_for_messenger(
+					$this->_active_messenger_name,
+					$this->_active_message_type_name
+				);
+		}
+
+		$this->_template_args['success'] = $success;
+		$this->_return_json();
+	}
+
+
+	/**
+	 * Takes care of processing activating a messenger and preparing the appropriate response.
+	 *
+	 * @param string $messenger_name The name of the messenger being activated
+	 * @return bool
+	 * @throws DomainException
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws ReflectionException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 */
+	protected function _activate_messenger($messenger_name)
+	{
+		$active_messenger          = $this->_message_resource_manager->get_messenger($messenger_name);
+		$message_types_to_activate = $active_messenger instanceof EE_Messenger
+			? $active_messenger->get_default_message_types()
+			: [];
+
+		// ensure is active
+		$this->_message_resource_manager->activate_messenger($active_messenger, $message_types_to_activate);
+
+		// set response_data for reload
+		foreach ($message_types_to_activate as $message_type_name) {
+			$message_type = $this->_message_resource_manager->get_message_type($message_type_name);
+			if (
+				$this->_message_resource_manager->is_message_type_active_for_messenger(
+					$messenger_name,
+					$message_type_name
+				)
+				&& $message_type instanceof EE_message_type
+			) {
+				$this->_template_args['data']['active_mts'][] = $message_type_name;
+				if ($message_type->get_admin_settings_fields()) {
+					$this->_template_args['data']['mt_reload'][] = $message_type_name;
+				}
+			}
+		}
+
+		// add success message for activating messenger
+		return $this->_setup_response_message_for_activating_messenger_with_message_types($active_messenger);
+	}
+
+
+	/**
+	 * Takes care of processing deactivating a messenger and preparing the appropriate response.
+	 *
+	 * @param string $messenger_name The name of the messenger being activated
+	 * @return bool
+	 * @throws DomainException
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws ReflectionException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 */
+	protected function _deactivate_messenger($messenger_name)
+	{
+		$active_messenger = $this->_message_resource_manager->get_messenger($messenger_name);
+		$this->_message_resource_manager->deactivate_messenger($messenger_name);
+
+		return $this->_setup_response_message_for_deactivating_messenger_with_message_types($active_messenger);
+	}
+
+
+	/**
+	 * Takes care of processing activating a message type for a messenger and preparing the appropriate response.
+	 *
+	 * @param string $messenger_name    The name of the messenger the message type is being activated for.
+	 * @param string $message_type_name The name of the message type being activated for the messenger
+	 * @return bool
+	 * @throws DomainException
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws ReflectionException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 */
+	protected function _activate_message_type_for_messenger($messenger_name, $message_type_name)
+	{
+		$active_messenger         = $this->_message_resource_manager->get_messenger($messenger_name);
+		$message_type_to_activate = $this->_message_resource_manager->get_message_type($message_type_name);
+
+		// ensure is active
+		$this->_message_resource_manager->activate_messenger($active_messenger, $message_type_name);
+
+		// set response for load
+		if (
+			$this->_message_resource_manager->is_message_type_active_for_messenger(
+				$messenger_name,
+				$message_type_name
+			)
+		) {
+			$this->_template_args['data']['active_mts'][] = $message_type_name;
+			if ($message_type_to_activate->get_admin_settings_fields()) {
+				$this->_template_args['data']['mt_reload'][] = $message_type_name;
+			}
+		}
+
+		return $this->_setup_response_message_for_activating_messenger_with_message_types(
+			$active_messenger,
+			$message_type_to_activate
+		);
+	}
+
+
+	/**
+	 * Takes care of processing deactivating a message type for a messenger and preparing the appropriate response.
+	 *
+	 * @param string $messenger_name    The name of the messenger the message type is being deactivated for.
+	 * @param string $message_type_name The name of the message type being deactivated for the messenger
+	 * @return bool
+	 * @throws DomainException
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws ReflectionException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 */
+	protected function _deactivate_message_type_for_messenger($messenger_name, $message_type_name)
+	{
+		$active_messenger = $this->_message_resource_manager->get_messenger($messenger_name);
+		/** @var EE_message_type $message_type_to_activate This will be present because it can't be toggled if it isn't */
+		$message_type_to_deactivate = $this->_message_resource_manager->get_message_type($message_type_name);
+		$this->_message_resource_manager->deactivate_message_type_for_messenger($message_type_name, $messenger_name);
+
+		return $this->_setup_response_message_for_deactivating_messenger_with_message_types(
+			$active_messenger,
+			$message_type_to_deactivate
+		);
+	}
+
+
+	/**
+	 * This just initializes the defaults for activating messenger and message type responses.
+	 */
+	protected function _prep_default_response_for_messenger_or_message_type_toggle()
+	{
+		$this->_template_args['data']['active_mts'] = [];
+		$this->_template_args['data']['mt_reload']  = [];
+	}
+
+
+	/**
+	 * Setup appropriate response for activating a messenger and/or message types
+	 *
+	 * @param EE_messenger         $messenger
+	 * @param EE_message_type|null $message_type
+	 * @return bool
+	 * @throws DomainException
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws ReflectionException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 */
+	protected function _setup_response_message_for_activating_messenger_with_message_types(
+		$messenger,
+		EE_Message_Type $message_type = null
+	) {
+		// if $messenger isn't a valid messenger object then get out.
+		if (! $messenger instanceof EE_Messenger) {
+			EE_Error::add_error(
+				esc_html__('The messenger being activated is not a valid messenger', 'event_espresso'),
+				__FILE__,
+				__FUNCTION__,
+				__LINE__
+			);
+			return false;
+		}
+		// activated
+		if ($this->_template_args['data']['active_mts']) {
+			EE_Error::overwrite_success();
+			// activated a message type with the messenger
+			if ($message_type instanceof EE_message_type) {
+				EE_Error::add_success(
+					sprintf(
+						esc_html__(
+							'%s message type has been successfully activated with the %s messenger',
+							'event_espresso'
+						),
+						ucwords($message_type->label['singular']),
+						ucwords($messenger->label['singular'])
+					)
+				);
+
+				// if message type was invoice then let's make sure we activate the invoice payment method.
+				if ($message_type->name === 'invoice') {
+					EE_Registry::instance()->load_lib('Payment_Method_Manager');
+					$pm = EE_Payment_Method_Manager::instance()->activate_a_payment_method_of_type('Invoice');
+					if ($pm instanceof EE_Payment_Method) {
+						EE_Error::add_attention(
+							esc_html__(
+								'Activating the invoice message type also automatically activates the invoice payment method.  If you do not wish the invoice payment method to be active, or to change its settings, visit the payment method admin page.',
+								'event_espresso'
+							)
+						);
+					}
+				}
+				// just toggles the entire messenger
+			} else {
+				EE_Error::add_success(
+					sprintf(
+						esc_html__('%s messenger has been successfully activated', 'event_espresso'),
+						ucwords($messenger->label['singular'])
+					)
+				);
+			}
+
+			return true;
+
+			// possible error condition. This will happen when our active_mts data is empty because it is validated for actual active
+			// message types after the activation process.  However its possible some messengers don't HAVE any default_message_types
+			// in which case we just give a success message for the messenger being successfully activated.
+		} else {
+			if (! $messenger->get_default_message_types()) {
+				// messenger doesn't have any default message types so still a success.
+				EE_Error::add_success(
+					sprintf(
+						esc_html__('%s messenger was successfully activated.', 'event_espresso'),
+						ucwords($messenger->label['singular'])
+					)
+				);
+
+				return true;
+			} else {
+				EE_Error::add_error(
+					$message_type instanceof EE_message_type
+					? sprintf(
+						esc_html__(
+							'%s message type was not successfully activated with the %s messenger',
+							'event_espresso'
+						),
+						ucwords($message_type->label['singular']),
+						ucwords($messenger->label['singular'])
+					)
+					: sprintf(
+						esc_html__('%s messenger was not successfully activated', 'event_espresso'),
+						ucwords($messenger->label['singular'])
+					),
+					__FILE__,
+					__FUNCTION__,
+					__LINE__
+				);
+
+				return false;
+			}
+		}
+	}
+
+
+	/**
+	 * This sets up the appropriate response for deactivating a messenger and/or message type.
+	 *
+	 * @param EE_messenger         $messenger
+	 * @param EE_message_type|null $message_type
+	 * @return bool
+	 * @throws DomainException
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws ReflectionException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 */
+	protected function _setup_response_message_for_deactivating_messenger_with_message_types(
+		$messenger,
+		EE_message_type $message_type = null
+	) {
+		EE_Error::overwrite_success();
+
+		// if $messenger isn't a valid messenger object then get out.
+		if (! $messenger instanceof EE_Messenger) {
+			EE_Error::add_error(
+				esc_html__('The messenger being deactivated is not a valid messenger', 'event_espresso'),
+				__FILE__,
+				__FUNCTION__,
+				__LINE__
+			);
+
+			return false;
+		}
+
+		if ($message_type instanceof EE_message_type) {
+			$message_type_name = $message_type->name;
+			EE_Error::add_success(
+				sprintf(
+					esc_html__(
+						'%s message type has been successfully deactivated for the %s messenger.',
+						'event_espresso'
+					),
+					ucwords($message_type->label['singular']),
+					ucwords($messenger->label['singular'])
+				)
+			);
+		} else {
+			$message_type_name = '';
+			EE_Error::add_success(
+				sprintf(
+					esc_html__('%s messenger has been successfully deactivated.', 'event_espresso'),
+					ucwords($messenger->label['singular'])
+				)
+			);
+		}
+
+		// if messenger was html or message type was invoice then let's make sure we deactivate invoice payment method.
+		if (
+			$messenger->name === 'html'
+			&& (
+				is_null($message_type)
+				|| $message_type_name === 'invoice'
+			)
+		) {
+			EE_Registry::instance()->load_lib('Payment_Method_Manager');
+			$count_updated = EE_Payment_Method_Manager::instance()->deactivate_payment_method('invoice');
+			if ($count_updated > 0) {
+				$msg = $message_type_name === 'invoice'
+					? esc_html__(
+						'Deactivating the invoice message type also automatically deactivates the invoice payment method. In order for invoices to be generated the invoice message type must be active. If you completed this action by mistake, simply reactivate the invoice message type and then visit the payment methods admin page to reactivate the invoice payment method.',
+						'event_espresso'
+					)
+					: esc_html__(
+						'Deactivating the html messenger also automatically deactivates the invoice payment method.  In order for invoices to be generated the html messenger must be be active.  If you completed this action by mistake, simply reactivate the html messenger, then visit the payment methods admin page to reactivate the invoice payment method.',
+						'event_espresso'
+					);
+				EE_Error::add_attention($msg);
+			}
+		}
+
+		return true;
+	}
+
+
+	/**
+	 * handles updating a message type form on messenger activation IF the message type has settings fields. (via ajax)
+	 *
+	 * @throws DomainException
+	 * @throws EE_Error
+	 * @throws EE_Error
+	 */
+	public function update_mt_form()
+	{
+		if (! $this->_active_messenger_name || ! $this->_active_message_type_name) {
+			EE_Error::add_error(
+				esc_html__('Require message type or messenger to send an updated form', 'event_espresso'),
+				__FILE__,
+				__FUNCTION__,
+				__LINE__
+			);
+			$this->_return_json();
+		}
+
+		$message_types = $this->get_installed_message_types();
+		$message_type  = $message_types[ $this->_active_message_type_name ];
+		$messenger     = $this->_message_resource_manager->get_active_messenger($this->_active_messenger_name);
+		$content       = $this->_message_type_settings_content($message_type, $messenger, true);
+
+		$this->_template_args['success'] = true;
+		$this->_template_args['content'] = $content;
+		$this->_return_json();
+	}
+
+
+	/**
+	 * this handles saving the settings for a messenger or message type
+	 *
+	 * @throws EE_Error
+	 * @throws EE_Error
+	 */
+	public function save_settings()
+	{
+		$type = $this->request->getRequestParam('type');
+		if (! $type) {
+			EE_Error::add_error(
+				esc_html__(
+					'Cannot save settings because type is unknown (messenger settings or message type settings?)',
+					'event_espresso'
+				),
+				__FILE__,
+				__FUNCTION__,
+				__LINE__
+			);
+			$this->_template_args['error'] = true;
+			$this->_return_json();
+		}
+
+
+		if ($type === 'messenger') {
+			// this should be an array.
+			$settings  = $this->request->getRequestParam('messenger_settings', [], 'string', true);
+			$messenger = $settings['messenger'];
+			// remove messenger and message_types from settings array
+			unset($settings['messenger'], $settings['message_types']);
+			$this->_message_resource_manager->add_settings_for_messenger($messenger, $settings);
+		} elseif ($type === 'message_type') {
+			$settings     = $this->request->getRequestParam('message_type_settings', [], 'string', true);
+			$messenger    = $settings['messenger'];
+			$message_type = $settings['message_type'];
+			// remove messenger and message_types from settings array
+			unset($settings['messenger'], $settings['message_types']);
+			$this->_message_resource_manager->add_settings_for_message_type($messenger, $message_type, $settings);
+		}
+
+		// okay we should have the data all setup.  Now we just update!
+		$success = $this->_message_resource_manager->update_active_messengers_option();
+
+		if ($success) {
+			EE_Error::add_success(esc_html__('Settings updated', 'event_espresso'));
+		} else {
+			EE_Error::add_error(
+				esc_html__('Settings did not get updated', 'event_espresso'),
+				__FILE__,
+				__FUNCTION__,
+				__LINE__
+			);
+		}
+
+		$this->_template_args['success'] = $success;
+		$this->_return_json();
+	}
+
+
+
+
+	/**  EE MESSAGE PROCESSING ACTIONS **/
+
+
+	/**
+	 * This immediately generates any EE_Message ID's that are selected that are EEM_Message::status_incomplete
+	 * However, this does not send immediately, it just queues for sending.
+	 *
+	 * @throws EE_Error
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidArgumentException
+	 * @throws ReflectionException
+	 * @since 4.9.0
+	 */
+	protected function _generate_now()
+	{
+		EED_Messages::generate_now($this->_get_msg_ids_from_request());
+		$this->_redirect_after_action(false, '', '', [], true);
+	}
+
+
+	/**
+	 * This immediately generates AND sends any EE_Message's selected that are EEM_Message::status_incomplete or that
+	 * are EEM_Message::status_resend or EEM_Message::status_idle
+	 *
+	 * @throws EE_Error
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidArgumentException
+	 * @throws ReflectionException
+	 * @since 4.9.0
+	 */
+	protected function _generate_and_send_now()
+	{
+		EED_Messages::generate_and_send_now($this->_get_msg_ids_from_request());
+		$this->_redirect_after_action(false, '', '', [], true);
+	}
+
+
+	/**
+	 * This queues any EEM_Message::status_sent EE_Message ids in the request for resending.
+	 *
+	 * @throws EE_Error
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidArgumentException
+	 * @throws ReflectionException
+	 * @since 4.9.0
+	 */
+	protected function _queue_for_resending()
+	{
+		EED_Messages::queue_for_resending($this->_get_msg_ids_from_request());
+		$this->_redirect_after_action(false, '', '', [], true);
+	}
+
+
+	/**
+	 *  This sends immediately any EEM_Message::status_idle or EEM_Message::status_resend messages in the queue
+	 *
+	 * @throws EE_Error
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidArgumentException
+	 * @throws ReflectionException
+	 * @since 4.9.0
+	 */
+	protected function _send_now()
+	{
+		EED_Messages::send_now($this->_get_msg_ids_from_request());
+		$this->_redirect_after_action(false, '', '', [], true);
+	}
+
+
+	/**
+	 * Deletes EE_messages for IDs in the request.
+	 *
+	 * @throws EE_Error
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidArgumentException
+	 * @since 4.9.0
+	 */
+	protected function _delete_ee_messages()
+	{
+		$MSG_IDs       = $this->_get_msg_ids_from_request();
+		$deleted_count = 0;
+		foreach ($MSG_IDs as $MSG_ID) {
+			if ($this->getMsgModel()->delete_by_ID($MSG_ID)) {
+				$deleted_count++;
+			}
+		}
+		if ($deleted_count) {
+			EE_Error::add_success(
+				esc_html(
+					_n(
+						'Message successfully deleted',
+						'Messages successfully deleted',
+						$deleted_count,
+						'event_espresso'
+					)
+				)
+			);
+		} else {
+			EE_Error::add_error(
+				_n('The message was not deleted.', 'The messages were not deleted', count($MSG_IDs), 'event_espresso'),
+				__FILE__,
+				__FUNCTION__,
+				__LINE__
+			);
+		}
+		$this->_redirect_after_action(false, '', '', [], true);
+	}
+
+
+	/**
+	 *  This looks for 'MSG_ID' key in the request and returns an array of MSG_ID's if present.
+	 *
+	 * @return array
+	 * @since 4.9.0
+	 */
+	protected function _get_msg_ids_from_request()
+	{
+		$MSG_IDs = $this->request->getRequestParam('MSG_ID', [], 'string', true);
+		if (empty($MSG_IDs)) {
+			return [];
+		}
+		// if 'MSG_ID' was just a single ID (not an array)
+		// then $MSG_IDs will be something like [123] so $MSG_IDs[0] should be 123
+		// otherwise, $MSG_IDs was already an array where message IDs were used as the keys
+		return count($MSG_IDs) === 1 && isset($MSG_IDs[0])
+			? $MSG_IDs
+			: array_keys($MSG_IDs);
+	}
 }

Spacing +220 added lines, -220 removed lines

@@ -115,7 +115,7 @@ 
      */
     public function getMsgModel()
     {
-        if (! $this->MSG_MODEL instanceof EEM_Message) {
+        if ( ! $this->MSG_MODEL instanceof EEM_Message) {
             $this->MSG_MODEL = EEM_Message::instance();
         }
         return $this->MSG_MODEL;
@@ -128,7 +128,7 @@ 
      */
     public function getMtpModel()
     {
-        if (! $this->MTP_MODEL instanceof EEM_Message_Template) {
+        if ( ! $this->MTP_MODEL instanceof EEM_Message_Template) {
             $this->MTP_MODEL = EEM_Message_Template::instance();
         }
         return $this->MTP_MODEL;
@@ -141,7 +141,7 @@ 
      */
     public function getMtgModel()
     {
-        if (! $this->MTG_MODEL instanceof EEM_Message_Template_Group) {
+        if ( ! $this->MTG_MODEL instanceof EEM_Message_Template_Group) {
             $this->MTG_MODEL = EEM_Message_Template_Group::instance();
         }
         return $this->MTG_MODEL;
@@ -211,8 +211,8 @@ 
         $i = 1;
         foreach ($active_messengers as $active_messenger) {
             if ($active_messenger instanceof EE_Message) {
-                $m_values[ $i ]['id']   = $active_messenger->messenger();
-                $m_values[ $i ]['text'] = ucwords($active_messenger->messenger_label());
+                $m_values[$i]['id']   = $active_messenger->messenger();
+                $m_values[$i]['text'] = ucwords($active_messenger->messenger_label());
                 $i++;
             }
         }
@@ -248,8 +248,8 @@ 
         $i               = 1;
         foreach ($active_messages as $active_message) {
             if ($active_message instanceof EE_Message) {
-                $mt_values[ $i ]['id']   = $active_message->message_type();
-                $mt_values[ $i ]['text'] = ucwords($active_message->message_type_label());
+                $mt_values[$i]['id']   = $active_message->message_type();
+                $mt_values[$i]['text'] = ucwords($active_message->message_type_label());
                 $i++;
             }
         }
@@ -288,7 +288,7 @@ 
                 if ($message_type instanceof EE_message_type) {
                     $message_type_contexts = $message_type->get_contexts();
                     foreach ($message_type_contexts as $context => $context_details) {
-                        $contexts[ $context ] = $context_details['label'];
+                        $contexts[$context] = $context_details['label'];
                     }
                 }
             }
@@ -321,7 +321,7 @@ 
             ['none_selected' => esc_html__('Show All Messengers', 'event_espresso')],
             $messenger_options
         );
-        $input             = new EE_Select_Input(
+        $input = new EE_Select_Input(
             $messenger_options,
             [
                 'html_name'  => 'ee_messenger_filter_by',
@@ -358,7 +358,7 @@ 
             ['none_selected' => esc_html__('Show All Message Types', 'event_espresso')],
             $message_type_options
         );
-        $input                = new EE_Select_Input(
+        $input = new EE_Select_Input(
             $message_type_options,
             [
                 'html_name'  => 'ee_message_type_filter_by',
@@ -395,7 +395,7 @@ 
             ['none_selected' => esc_html__('Show all Contexts', 'event_espresso')],
             $context_options
         );
-        $input           = new EE_Select_Input(
+        $input = new EE_Select_Input(
             $context_options,
             [
                 'html_name'  => 'ee_context_filter_by',
@@ -776,53 +776,53 @@ 
 
     public function messages_help_tab()
     {
-        EEH_Template::display_template(EE_MSG_TEMPLATE_PATH . 'ee_msg_messages_help_tab.template.php');
+        EEH_Template::display_template(EE_MSG_TEMPLATE_PATH.'ee_msg_messages_help_tab.template.php');
     }
 
 
     public function messengers_help_tab()
     {
-        EEH_Template::display_template(EE_MSG_TEMPLATE_PATH . 'ee_msg_messenger_help_tab.template.php');
+        EEH_Template::display_template(EE_MSG_TEMPLATE_PATH.'ee_msg_messenger_help_tab.template.php');
     }
 
 
     public function message_types_help_tab()
     {
-        EEH_Template::display_template(EE_MSG_TEMPLATE_PATH . 'ee_msg_message_type_help_tab.template.php');
+        EEH_Template::display_template(EE_MSG_TEMPLATE_PATH.'ee_msg_message_type_help_tab.template.php');
     }
 
 
     public function messages_overview_help_tab()
     {
-        EEH_Template::display_template(EE_MSG_TEMPLATE_PATH . 'ee_msg_overview_help_tab.template.php');
+        EEH_Template::display_template(EE_MSG_TEMPLATE_PATH.'ee_msg_overview_help_tab.template.php');
     }
 
 
     public function message_templates_help_tab()
     {
-        EEH_Template::display_template(EE_MSG_TEMPLATE_PATH . 'ee_msg_message_templates_help_tab.template.php');
+        EEH_Template::display_template(EE_MSG_TEMPLATE_PATH.'ee_msg_message_templates_help_tab.template.php');
     }
 
 
     public function edit_message_template_help_tab()
     {
-        $args['img1'] = '<img src="' . EE_MSG_ASSETS_URL . 'images/editor.png' . '" alt="'
+        $args['img1'] = '<img src="'.EE_MSG_ASSETS_URL.'images/editor.png'.'" alt="'
                         . esc_attr__('Editor Title', 'event_espresso')
                         . '" />';
-        $args['img2'] = '<img src="' . EE_MSG_ASSETS_URL . 'images/switch-context.png' . '" alt="'
+        $args['img2'] = '<img src="'.EE_MSG_ASSETS_URL.'images/switch-context.png'.'" alt="'
                         . esc_attr__('Context Switcher and Preview', 'event_espresso')
                         . '" />';
-        $args['img3'] = '<img class="left" src="' . EE_MSG_ASSETS_URL . 'images/form-fields.png' . '" alt="'
+        $args['img3'] = '<img class="left" src="'.EE_MSG_ASSETS_URL.'images/form-fields.png'.'" alt="'
                         . esc_attr__('Message Template Form Fields', 'event_espresso')
                         . '" />';
-        $args['img4'] = '<img class="right" src="' . EE_MSG_ASSETS_URL . 'images/shortcodes-metabox.png' . '" alt="'
+        $args['img4'] = '<img class="right" src="'.EE_MSG_ASSETS_URL.'images/shortcodes-metabox.png'.'" alt="'
                         . esc_attr__('Shortcodes Metabox', 'event_espresso')
                         . '" />';
-        $args['img5'] = '<img class="right" src="' . EE_MSG_ASSETS_URL . 'images/publish-meta-box.png' . '" alt="'
+        $args['img5'] = '<img class="right" src="'.EE_MSG_ASSETS_URL.'images/publish-meta-box.png'.'" alt="'
                         . esc_attr__('Publish Metabox', 'event_espresso')
                         . '" />';
         EEH_Template::display_template(
-            EE_MSG_TEMPLATE_PATH . 'ee_msg_messages_templates_editor_help_tab.template.php',
+            EE_MSG_TEMPLATE_PATH.'ee_msg_messages_templates_editor_help_tab.template.php',
             $args
         );
     }
@@ -837,7 +837,7 @@ 
         $this->_set_shortcodes();
         $args['shortcodes'] = $this->_shortcodes;
         EEH_Template::display_template(
-            EE_MSG_TEMPLATE_PATH . 'ee_msg_messages_shortcodes_help_tab.template.php',
+            EE_MSG_TEMPLATE_PATH.'ee_msg_messages_shortcodes_help_tab.template.php',
             $args
         );
     }
@@ -845,16 +845,16 @@ 
 
     public function preview_message_help_tab()
     {
-        EEH_Template::display_template(EE_MSG_TEMPLATE_PATH . 'ee_msg_preview_help_tab.template.php');
+        EEH_Template::display_template(EE_MSG_TEMPLATE_PATH.'ee_msg_preview_help_tab.template.php');
     }
 
 
     public function settings_help_tab()
     {
-        $args['img1'] = '<img class="inline-text" src="' . EE_MSG_ASSETS_URL . 'images/email-tab-active.png'
-                        . '" alt="' . esc_attr__('Active Email Tab', 'event_espresso') . '" />';
-        $args['img2'] = '<img class="inline-text" src="' . EE_MSG_ASSETS_URL . 'images/email-tab-inactive.png'
-                        . '" alt="' . esc_attr__('Inactive Email Tab', 'event_espresso') . '" />';
+        $args['img1'] = '<img class="inline-text" src="'.EE_MSG_ASSETS_URL.'images/email-tab-active.png'
+                        . '" alt="'.esc_attr__('Active Email Tab', 'event_espresso').'" />';
+        $args['img2'] = '<img class="inline-text" src="'.EE_MSG_ASSETS_URL.'images/email-tab-inactive.png'
+                        . '" alt="'.esc_attr__('Inactive Email Tab', 'event_espresso').'" />';
         $args['img3'] = '<div class="ee-switch">'
                         . '<input class="ee-switch__input" id="ee-on-off-toggle-on" type="checkbox" checked>'
                         . '<label class="ee-switch__toggle" for="ee-on-off-toggle-on"></label>'
@@ -863,25 +863,25 @@ 
                         . '<input class="ee-switch__input" id="ee-on-off-toggle-off" type="checkbox">'
                         . '<label class="ee-switch__toggle" for="ee-on-off-toggle-off"></label>'
                         . '</div>';
-        EEH_Template::display_template(EE_MSG_TEMPLATE_PATH . 'ee_msg_messages_settings_help_tab.template.php', $args);
+        EEH_Template::display_template(EE_MSG_TEMPLATE_PATH.'ee_msg_messages_settings_help_tab.template.php', $args);
     }
 
 
     public function load_scripts_styles()
     {
-        wp_register_style('espresso_ee_msg', EE_MSG_ASSETS_URL . 'ee_message_admin.css', EVENT_ESPRESSO_VERSION);
+        wp_register_style('espresso_ee_msg', EE_MSG_ASSETS_URL.'ee_message_admin.css', EVENT_ESPRESSO_VERSION);
         wp_enqueue_style('espresso_ee_msg');
 
         wp_register_script(
             'ee-messages-settings',
-            EE_MSG_ASSETS_URL . 'ee-messages-settings.js',
+            EE_MSG_ASSETS_URL.'ee-messages-settings.js',
             ['jquery-ui-droppable', 'ee-serialize-full-array'],
             EVENT_ESPRESSO_VERSION,
             true
         );
         wp_register_script(
             'ee-msg-list-table-js',
-            EE_MSG_ASSETS_URL . 'ee_message_admin_list_table.js',
+            EE_MSG_ASSETS_URL.'ee_message_admin_list_table.js',
             ['ee-dialog'],
             EVENT_ESPRESSO_VERSION
         );
@@ -924,7 +924,7 @@ 
 
         $this->_set_shortcodes();
 
-        EE_Registry::$i18n_js_strings['confirm_default_reset']        = sprintf(
+        EE_Registry::$i18n_js_strings['confirm_default_reset'] = sprintf(
             esc_html__(
                 'Are you sure you want to reset the %s %s message templates?  Remember continuing will reset the templates for all contexts in this messenger and message type group.',
                 'event_espresso'
@@ -936,14 +936,14 @@ 
             'Switching the template pack for a messages template will reset the content for the template so the new layout is loaded.  Any custom content in the existing template will be lost. Are you sure you wish to do this?',
             'event_espresso'
         );
-        EE_Registry::$i18n_js_strings['server_error']                 = esc_html__(
+        EE_Registry::$i18n_js_strings['server_error'] = esc_html__(
             'An unknown error occurred on the server while attempting to process your request. Please refresh the page and try again or contact support.',
             'event_espresso'
         );
 
         wp_register_script(
             'ee_msgs_edit_js',
-            EE_MSG_ASSETS_URL . 'ee_message_editor.js',
+            EE_MSG_ASSETS_URL.'ee_message_editor.js',
             ['jquery'],
             EVENT_ESPRESSO_VERSION
         );
@@ -986,7 +986,7 @@ 
     {
         wp_register_style(
             'ee-message-settings',
-            EE_MSG_ASSETS_URL . 'ee_message_settings.css',
+            EE_MSG_ASSETS_URL.'ee_message_settings.css',
             [],
             EVENT_ESPRESSO_VERSION
         );
@@ -1072,7 +1072,7 @@ 
             }
             $status_bulk_actions = $common_bulk_actions;
             // unset bulk actions not applying to status
-            if (! empty($status_bulk_actions)) {
+            if ( ! empty($status_bulk_actions)) {
                 switch ($status) {
                     case EEM_Message::status_idle:
                     case EEM_Message::status_resend:
@@ -1101,7 +1101,7 @@ 
                 continue;
             }
 
-            $this->_views[ strtolower($status) ] = [
+            $this->_views[strtolower($status)] = [
                 'slug'        => strtolower($status),
                 'label'       => EEH_Template::pretty_status($status, false, 'sentence'),
                 'count'       => 0,
@@ -1149,7 +1149,7 @@ 
             if ($action_item === 'see_notifications_for') {
                 continue;
             }
-            $action_items[ $action_item ] = [
+            $action_items[$action_item] = [
                 'class' => $action_details['css_class'],
                 'desc'  => $action_details['label'],
             ];
@@ -1158,37 +1158,37 @@ 
         /** @var array $status_items status legend setup */
         $status_items = [
             'sent_status'                => [
-                'class' => 'ee-status-legend ee-status-bg--' . EEM_Message::status_sent,
+                'class' => 'ee-status-legend ee-status-bg--'.EEM_Message::status_sent,
                 'desc'  => EEH_Template::pretty_status(EEM_Message::status_sent, false, 'sentence'),
             ],
             'idle_status'                => [
-                'class' => 'ee-status-legend ee-status-bg--' . EEM_Message::status_idle,
+                'class' => 'ee-status-legend ee-status-bg--'.EEM_Message::status_idle,
                 'desc'  => EEH_Template::pretty_status(EEM_Message::status_idle, false, 'sentence'),
             ],
             'failed_status'              => [
-                'class' => 'ee-status-legend ee-status-bg--' . EEM_Message::status_failed,
+                'class' => 'ee-status-legend ee-status-bg--'.EEM_Message::status_failed,
                 'desc'  => EEH_Template::pretty_status(EEM_Message::status_failed, false, 'sentence'),
             ],
             'messenger_executing_status' => [
-                'class' => 'ee-status-legend ee-status-bg--' . EEM_Message::status_messenger_executing,
+                'class' => 'ee-status-legend ee-status-bg--'.EEM_Message::status_messenger_executing,
                 'desc'  => EEH_Template::pretty_status(EEM_Message::status_messenger_executing, false, 'sentence'),
             ],
             'resend_status'              => [
-                'class' => 'ee-status-legend ee-status-bg--' . EEM_Message::status_resend,
+                'class' => 'ee-status-legend ee-status-bg--'.EEM_Message::status_resend,
                 'desc'  => EEH_Template::pretty_status(EEM_Message::status_resend, false, 'sentence'),
             ],
             'incomplete_status'          => [
-                'class' => 'ee-status-legend ee-status-bg--' . EEM_Message::status_incomplete,
+                'class' => 'ee-status-legend ee-status-bg--'.EEM_Message::status_incomplete,
                 'desc'  => EEH_Template::pretty_status(EEM_Message::status_incomplete, false, 'sentence'),
             ],
             'retry_status'               => [
-                'class' => 'ee-status-legend ee-status-bg--' . EEM_Message::status_retry,
+                'class' => 'ee-status-legend ee-status-bg--'.EEM_Message::status_retry,
                 'desc'  => EEH_Template::pretty_status(EEM_Message::status_retry, false, 'sentence'),
             ],
         ];
         if (EEM_Message::debug()) {
             $status_items['debug_only_status'] = [
-                'class' => 'ee-status-legend ee-status-bg--' . EEM_Message::status_debug_only,
+                'class' => 'ee-status-legend ee-status-bg--'.EEM_Message::status_debug_only,
                 'desc'  => EEH_Template::pretty_status(EEM_Message::status_debug_only, false, 'sentence'),
             ];
         }
@@ -1203,11 +1203,11 @@ 
     protected function _custom_mtps_preview()
     {
         $this->_admin_page_title              = esc_html__('Custom Message Templates (Preview)', 'event_espresso');
-        $this->_template_args['preview_img']  = '<img src="' . EE_MSG_ASSETS_URL . 'images/custom_mtps_preview.png"'
-                                                . ' alt="' . esc_attr__(
+        $this->_template_args['preview_img']  = '<img src="'.EE_MSG_ASSETS_URL.'images/custom_mtps_preview.png"'
+                                                . ' alt="'.esc_attr__(
                                                     'Preview Custom Message Templates screenshot',
                                                     'event_espresso'
-                                                ) . '" />';
+                                                ).'" />';
         $this->_template_args['preview_text'] = '<strong>'
                                                 . esc_html__(
                                                     'Custom Message Templates is a feature that is only available in the premium version of Event Espresso 4 which is available with a support license purchase on EventEspresso.com. With the Custom Message Templates feature, you are able to create custom message templates and assign them on a per-event basis.',
@@ -1283,7 +1283,7 @@ 
         $installed               = [];
 
         foreach ($installed_message_types as $message_type) {
-            $installed[ $message_type->name ] = $message_type;
+            $installed[$message_type->name] = $message_type;
         }
 
         return $installed;
@@ -1409,7 +1409,7 @@ 
         // we need to assemble the title from Various details
         $context_label = sprintf(
             esc_html__('(%s %s)', 'event_espresso'),
-            $c_config[ $context ]['label'],
+            $c_config[$context]['label'],
             ucwords($c_label['label'])
         );
 
@@ -1432,7 +1432,7 @@ 
             $context
         );
 
-        if (! $template_field_structure) {
+        if ( ! $template_field_structure) {
             $template_field_structure = false;
             $template_fields          = esc_html__(
                 'There was an error in assembling the fields for this display (you should see an error message)',
@@ -1446,21 +1446,21 @@ 
 
         // if we have the extra key.. then we need to remove the content index from the template_field_structure as it
         // will get handled in the "extra" array.
-        if (is_array($template_field_structure[ $context ]) && isset($template_field_structure[ $context ]['extra'])) {
-            foreach ($template_field_structure[ $context ]['extra'] as $reference_field => $new_fields) {
-                unset($template_field_structure[ $context ][ $reference_field ]);
+        if (is_array($template_field_structure[$context]) && isset($template_field_structure[$context]['extra'])) {
+            foreach ($template_field_structure[$context]['extra'] as $reference_field => $new_fields) {
+                unset($template_field_structure[$context][$reference_field]);
             }
         }
 
         // let's loop through the template_field_structure and actually assemble the input fields!
-        if (! empty($template_field_structure)) {
-            foreach ($template_field_structure[ $context ] as $template_field => $field_setup_array) {
+        if ( ! empty($template_field_structure)) {
+            foreach ($template_field_structure[$context] as $template_field => $field_setup_array) {
                 // if this is an 'extra' template field then we need to remove any existing fields that are keyed up in
                 // the extra array and reset them.
                 if ($template_field === 'extra') {
                     $this->_template_args['is_extra_fields'] = true;
                     foreach ($field_setup_array as $reference_field => $new_fields_array) {
-                        $message_template = $message_templates[ $context ][ $reference_field ];
+                        $message_template = $message_templates[$context][$reference_field];
                         $content          = $message_template instanceof EE_Message_Template
                             ? $message_template->get('MTP_content')
                             : '';
@@ -1469,7 +1469,7 @@ 
                             $continue = false;
                             if (isset($extra_array['shortcodes_required'])) {
                                 foreach ((array) $extra_array['shortcodes_required'] as $shortcode) {
-                                    if (! array_key_exists($shortcode, $this->_shortcodes)) {
+                                    if ( ! array_key_exists($shortcode, $this->_shortcodes)) {
                                         $continue = true;
                                     }
                                 }
@@ -1478,51 +1478,51 @@ 
                                 }
                             }
 
-                            $field_id = $reference_field . '-' . $extra_field . '-content';
+                            $field_id = $reference_field.'-'.$extra_field.'-content';
 
-                            $template_form_fields[ $field_id ]         = $extra_array;
-                            $template_form_fields[ $field_id ]['name'] = 'MTP_template_fields['
+                            $template_form_fields[$field_id]         = $extra_array;
+                            $template_form_fields[$field_id]['name'] = 'MTP_template_fields['
                                                                          . $reference_field
                                                                          . '][content]['
-                                                                         . $extra_field . ']';
-                            $css_class                                 = $extra_array['css_class'] ?? '';
+                                                                         . $extra_field.']';
+                            $css_class = $extra_array['css_class'] ?? '';
 
-                            $template_form_fields[ $field_id ]['css_class'] = ! empty($v_fields)
+                            $template_form_fields[$field_id]['css_class'] = ! empty($v_fields)
                                                                               && in_array($extra_field, $v_fields, true)
                                                                               && (
-                                                                                  is_array($validators[ $extra_field ])
-                                                                                  && isset($validators[ $extra_field ]['msg'])
+                                                                                  is_array($validators[$extra_field])
+                                                                                  && isset($validators[$extra_field]['msg'])
                                                                               )
-                                ? 'validate-error ' . $css_class
+                                ? 'validate-error '.$css_class
                                 : $css_class;
 
-                            $template_form_fields[ $field_id ]['value'] = ! empty($message_templates)
-                                                                          && isset($content[ $extra_field ])
-                                ? $content[ $extra_field ]
+                            $template_form_fields[$field_id]['value'] = ! empty($message_templates)
+                                                                          && isset($content[$extra_field])
+                                ? $content[$extra_field]
                                 : '';
 
                             // do we have a validation error?  if we do then let's use that value instead
-                            $template_form_fields[ $field_id ]['value'] = isset($validators[ $extra_field ])
-                                ? $validators[ $extra_field ]['value']
-                                : $template_form_fields[ $field_id ]['value'];
+                            $template_form_fields[$field_id]['value'] = isset($validators[$extra_field])
+                                ? $validators[$extra_field]['value']
+                                : $template_form_fields[$field_id]['value'];
 
 
-                            $template_form_fields[ $field_id ]['db-col'] = 'MTP_content';
+                            $template_form_fields[$field_id]['db-col'] = 'MTP_content';
 
                             // shortcode selector
                             $field_name_to_use                                   = $extra_field === 'main'
                                 ? 'content'
                                 : $extra_field;
-                            $template_form_fields[ $field_id ]['append_content'] = $this->_get_shortcode_selector(
+                            $template_form_fields[$field_id]['append_content'] = $this->_get_shortcode_selector(
                                 $field_name_to_use,
                                 $field_id
                             );
                         }
-                        $template_field_MTP_id           = $reference_field . '-MTP_ID';
-                        $template_field_template_name_id = $reference_field . '-name';
+                        $template_field_MTP_id           = $reference_field.'-MTP_ID';
+                        $template_field_template_name_id = $reference_field.'-name';
 
-                        $template_form_fields[ $template_field_MTP_id ] = [
-                            'name'       => 'MTP_template_fields[' . $reference_field . '][MTP_ID]',
+                        $template_form_fields[$template_field_MTP_id] = [
+                            'name'       => 'MTP_template_fields['.$reference_field.'][MTP_ID]',
                             'label'      => null,
                             'input'      => 'hidden',
                             'type'       => 'int',
@@ -1534,8 +1534,8 @@ 
                             'db-col'     => 'MTP_ID',
                         ];
 
-                        $template_form_fields[ $template_field_template_name_id ] = [
-                            'name'       => 'MTP_template_fields[' . $reference_field . '][name]',
+                        $template_form_fields[$template_field_template_name_id] = [
+                            'name'       => 'MTP_template_fields['.$reference_field.'][name]',
                             'label'      => null,
                             'input'      => 'hidden',
                             'type'       => 'string',
@@ -1549,34 +1549,34 @@ 
                     }
                     continue; // skip the next stuff, we got the necessary fields here for this dataset.
                 } else {
-                    $field_id                                   = $template_field . '-content';
-                    $template_form_fields[ $field_id ]          = $field_setup_array;
-                    $template_form_fields[ $field_id ]['name']  =
-                        'MTP_template_fields[' . $template_field . '][content]';
-                    $message_template                           = $message_templates[ $context ][ $template_field ]
+                    $field_id                                   = $template_field.'-content';
+                    $template_form_fields[$field_id]          = $field_setup_array;
+                    $template_form_fields[$field_id]['name']  =
+                        'MTP_template_fields['.$template_field.'][content]';
+                    $message_template                           = $message_templates[$context][$template_field]
                                                                   ?? null;
-                    $template_form_fields[ $field_id ]['value'] = ! empty($message_templates)
-                                                                  && is_array($message_templates[ $context ])
+                    $template_form_fields[$field_id]['value'] = ! empty($message_templates)
+                                                                  && is_array($message_templates[$context])
                                                                   && $message_template instanceof EE_Message_Template
                         ? $message_template->get('MTP_content')
                         : '';
 
                     // do we have a validator error for this field?  if we do then we'll use that value instead
-                    $template_form_fields[ $field_id ]['value'] = isset($validators[ $template_field ])
-                        ? $validators[ $template_field ]['value']
-                        : $template_form_fields[ $field_id ]['value'];
+                    $template_form_fields[$field_id]['value'] = isset($validators[$template_field])
+                        ? $validators[$template_field]['value']
+                        : $template_form_fields[$field_id]['value'];
 
 
-                    $template_form_fields[ $field_id ]['db-col']    = 'MTP_content';
+                    $template_form_fields[$field_id]['db-col']    = 'MTP_content';
                     $css_class                                      = $field_setup_array['css_class'] ?? '';
-                    $template_form_fields[ $field_id ]['css_class'] = ! empty($v_fields)
+                    $template_form_fields[$field_id]['css_class'] = ! empty($v_fields)
                                                                       && in_array($template_field, $v_fields, true)
-                                                                      && isset($validators[ $template_field ]['msg'])
-                        ? 'validate-error ' . $css_class
+                                                                      && isset($validators[$template_field]['msg'])
+                        ? 'validate-error '.$css_class
                         : $css_class;
 
                     // shortcode selector
-                    $template_form_fields[ $field_id ]['append_content'] = $this->_get_shortcode_selector(
+                    $template_form_fields[$field_id]['append_content'] = $this->_get_shortcode_selector(
                         $template_field,
                         $field_id
                     );
@@ -1584,12 +1584,12 @@ 
 
                 // k took care of content field(s) now let's take care of others.
 
-                $template_field_MTP_id                 = $template_field . '-MTP_ID';
-                $template_field_field_template_name_id = $template_field . '-name';
+                $template_field_MTP_id                 = $template_field.'-MTP_ID';
+                $template_field_field_template_name_id = $template_field.'-name';
 
                 // foreach template field there are actually two form fields created
-                $template_form_fields[ $template_field_MTP_id ] = [
-                    'name'       => 'MTP_template_fields[' . $template_field . '][MTP_ID]',
+                $template_form_fields[$template_field_MTP_id] = [
+                    'name'       => 'MTP_template_fields['.$template_field.'][MTP_ID]',
                     'label'      => null,
                     'input'      => 'hidden',
                     'type'       => 'int',
@@ -1601,8 +1601,8 @@ 
                     'db-col'     => 'MTP_ID',
                 ];
 
-                $template_form_fields[ $template_field_field_template_name_id ] = [
-                    'name'       => 'MTP_template_fields[' . $template_field . '][name]',
+                $template_form_fields[$template_field_field_template_name_id] = [
+                    'name'       => 'MTP_template_fields['.$template_field.'][name]',
                     'label'      => null,
                     'input'      => 'hidden',
                     'type'       => 'string',
@@ -1719,7 +1719,7 @@ 
                 'format'     => '%d',
                 'db-col'     => 'MTP_deleted',
             ];
-            $sidebar_form_fields['ee-msg-author']  = [
+            $sidebar_form_fields['ee-msg-author'] = [
                 'name'       => 'MTP_user_id',
                 'label'      => esc_html__('Author', 'event_espresso'),
                 'input'      => 'hidden',
@@ -1738,17 +1738,17 @@ 
                 'value' => $action,
             ];
 
-            $sidebar_form_fields['ee-msg-id']        = [
+            $sidebar_form_fields['ee-msg-id'] = [
                 'name'  => 'id',
                 'input' => 'hidden',
                 'type'  => 'int',
                 'value' => $GRP_ID,
             ];
             $sidebar_form_fields['ee-msg-evt-nonce'] = [
-                'name'  => $action . '_nonce',
+                'name'  => $action.'_nonce',
                 'input' => 'hidden',
                 'type'  => 'string',
-                'value' => wp_create_nonce($action . '_nonce'),
+                'value' => wp_create_nonce($action.'_nonce'),
             ];
 
             $template_switch = $this->request->getRequestParam('template_switch');
@@ -1779,7 +1779,7 @@ 
         );
 
         // add preview button
-        $preview_url    = parent::add_query_args_and_nonce(
+        $preview_url = parent::add_query_args_and_nonce(
             [
                 'message_type' => $message_template_group->message_type(),
                 'messenger'    => $message_template_group->messenger(),
@@ -1790,7 +1790,7 @@ 
             ],
             $this->_admin_base_url
         );
-        $preview_button = '<a href="' . $preview_url . '" class="button--secondary messages-preview-button">'
+        $preview_button = '<a href="'.$preview_url.'" class="button--secondary messages-preview-button">'
                           . esc_html__('Preview', 'event_espresso')
                           . '</a>';
 
@@ -1828,11 +1828,11 @@ 
         $this->_template_args['before_admin_page_content'] .= $this->add_context_switcher();
         $this->_template_args['before_admin_page_content'] .= '</div>';
         $this->_template_args['before_admin_page_content'] .= $this->_add_form_element_before();
-        $this->_template_args['after_admin_page_content']  = $this->_add_form_element_after();
+        $this->_template_args['after_admin_page_content'] = $this->_add_form_element_after();
 
         $this->_template_path = $this->_template_args['GRP_ID']
             ? EE_MSG_TEMPLATE_PATH . 'ee_msg_details_main_edit_meta_box.template.php'
-            : EE_MSG_TEMPLATE_PATH . 'ee_msg_details_main_add_meta_box.template.php';
+            : EE_MSG_TEMPLATE_PATH.'ee_msg_details_main_add_meta_box.template.php';
 
         // send along EE_Message_Template_Group object for further template use.
         $this->_template_args['MTP'] = $message_template_group;
@@ -1888,7 +1888,7 @@ 
     ) {
         $template_args = [
             'context'                   => $context,
-            'nonce'                     => wp_create_nonce('activate_' . $context . '_toggle_nonce'),
+            'nonce'                     => wp_create_nonce('activate_'.$context.'_toggle_nonce'),
             'is_active'                 => $message_template_group->is_context_active($context),
             'on_off_action'             => $message_template_group->is_context_active($context)
                 ? 'context-off'
@@ -1897,7 +1897,7 @@ 
             'message_template_group_id' => $message_template_group->ID(),
         ];
         return EEH_Template::display_template(
-            EE_MSG_TEMPLATE_PATH . 'ee_msg_editor_active_context_element.template.php',
+            EE_MSG_TEMPLATE_PATH.'ee_msg_editor_active_context_element.template.php',
             $template_args,
             true
         );
@@ -1954,7 +1954,7 @@ 
         }
         $message_template_group_id = $this->request->getRequestParam('message_template_group_id', 0, 'int');
         $message_template_group    = $this->getMtgModel()->get_one_by_ID($message_template_group_id);
-        if (! $message_template_group instanceof EE_Message_Template_Group) {
+        if ( ! $message_template_group instanceof EE_Message_Template_Group) {
             EE_Error::add_error(
                 sprintf(
                     esc_html__(
@@ -2085,7 +2085,7 @@ 
         $messenger    = $this->request->getRequestParam('msgr');
         $message_type = $this->request->getRequestParam('mt');
         // we need to make sure we've got the info we need.
-        if (! ($GRP_ID && $messenger && $message_type)) {
+        if ( ! ($GRP_ID && $messenger && $message_type)) {
             EE_Error::add_error(
                 esc_html__(
                     'In order to reset the template to its default we require the messenger, message type, and message template GRP_ID to know what is being reset.  At least one of these is missing.',
@@ -2122,7 +2122,7 @@ 
         }
 
         // any error messages?
-        if (! $success) {
+        if ( ! $success) {
             EE_Error::add_error(
                 esc_html__(
                     'Something went wrong with deleting existing templates. Unable to reset to default',
@@ -2171,7 +2171,7 @@ 
     {
         // first make sure we've got the necessary parameters
         $GRP_ID = $this->request->getRequestParam('GRP_ID', 0, 'int');
-        if (! ($GRP_ID && $this->_active_messenger_name && $this->_active_message_type_name)) {
+        if ( ! ($GRP_ID && $this->_active_messenger_name && $this->_active_message_type_name)) {
             EE_Error::add_error(
                 esc_html__('Missing necessary parameters for displaying preview', 'event_espresso'),
                 __FILE__,
@@ -2197,7 +2197,7 @@ 
         $EVT_ID = $this->request->getRequestParam('evt_id', 0, 'int');
 
         // let's add a button to go back to the edit view
-        $query_args             = [
+        $query_args = [
             'id'      => $GRP_ID,
             'evt_id'  => $EVT_ID,
             'context' => $context,
@@ -2218,7 +2218,7 @@ 
         $preview_title = sprintf(
             esc_html__('Viewing Preview for %s %s Message Template', 'event_espresso'),
             $active_messenger_label,
-            ucwords($message_types[ $this->_active_message_type_name ]->label['singular'])
+            ucwords($message_types[$this->_active_message_type_name]->label['singular'])
         );
         if (empty($preview)) {
             $this->noEventsErrorMessage();
@@ -2226,7 +2226,7 @@ 
         // setup display of preview.
         $this->_admin_page_title                    = $preview_title;
         $this->_template_args['admin_page_title']   = $preview_title;
-        $this->_template_args['admin_page_content'] = $preview_button . '<br />' . $preview;
+        $this->_template_args['admin_page_content'] = $preview_button.'<br />'.$preview;
         $this->_template_args['data']['force_json'] = true;
 
         return '';
@@ -2247,7 +2247,7 @@ 
             ],
             admin_url('admin.php')
         );
-        $message    = $test_send
+        $message = $test_send
             ? esc_html__(
                 'A test message could not be sent for this message template because there are no events created yet. The preview system uses actual events for generating the test message. %1$sGo see your events%2$s!',
                 'event_espresso'
@@ -2340,10 +2340,10 @@ 
             // only include template packs that support this messenger and message type!
             $supports = $tp->get_supports();
             if (
-                ! isset($supports[ $this->_message_template_group->messenger() ])
+                ! isset($supports[$this->_message_template_group->messenger()])
                 || ! in_array(
                     $this->_message_template_group->message_type(),
-                    $supports[ $this->_message_template_group->messenger() ],
+                    $supports[$this->_message_template_group->messenger()],
                     true
                 )
             ) {
@@ -2367,7 +2367,7 @@ 
         }
 
         // setup variation select values for the currently selected template.
-        $variations               = $this->_message_template_group->get_template_pack()->get_variations(
+        $variations = $this->_message_template_group->get_template_pack()->get_variations(
             $this->_message_template_group->messenger(),
             $this->_message_template_group->message_type()
         );
@@ -2381,12 +2381,12 @@ 
 
         $template_pack_labels = $this->_message_template_group->messenger_obj()->get_supports_labels();
 
-        $template_args['template_packs_selector']        = EEH_Form_Fields::select_input(
+        $template_args['template_packs_selector'] = EEH_Form_Fields::select_input(
             'MTP_template_pack',
             $tp_select_values,
             $this->_message_template_group->get_template_pack_name()
         );
-        $template_args['variations_selector']            = EEH_Form_Fields::select_input(
+        $template_args['variations_selector'] = EEH_Form_Fields::select_input(
             'MTP_template_variation',
             $variations_select_values,
             $this->_message_template_group->get_template_pack_variation()
@@ -2396,7 +2396,7 @@ 
         $template_args['template_pack_description']      = $template_pack_labels->template_pack_description;
         $template_args['template_variation_description'] = $template_pack_labels->template_variation_description;
 
-        $template = EE_MSG_TEMPLATE_PATH . 'template_pack_and_variations_metabox.template.php';
+        $template = EE_MSG_TEMPLATE_PATH.'template_pack_and_variations_metabox.template.php';
 
         EEH_Template::display_template($template, $template_args);
     }
@@ -2422,33 +2422,33 @@ 
         // first we need to see if there are any fields
         $fields = $this->_message_template_group->messenger_obj()->get_test_settings_fields();
 
-        if (! empty($fields)) {
+        if ( ! empty($fields)) {
             // yup there be fields
             foreach ($fields as $field => $config) {
-                $field_id = $this->_message_template_group->messenger() . '_' . $field;
+                $field_id = $this->_message_template_group->messenger().'_'.$field;
                 $existing = $this->_message_template_group->messenger_obj()->get_existing_test_settings();
                 $default  = isset($config['default']) ? $config['default'] : '';
                 $default  = isset($config['value']) ? $config['value'] : $default;
 
                 // if type is hidden and the value is empty
                 // something may have gone wrong so let's correct with the defaults
-                $fix                = $config['input'] === 'hidden'
-                                      && isset($existing[ $field ])
-                                      && empty($existing[ $field ])
+                $fix = $config['input'] === 'hidden'
+                                      && isset($existing[$field])
+                                      && empty($existing[$field])
                     ? $default
                     : '';
-                $existing[ $field ] = isset($existing[ $field ]) && empty($fix)
-                    ? $existing[ $field ]
+                $existing[$field] = isset($existing[$field]) && empty($fix)
+                    ? $existing[$field]
                     : $fix;
 
-                $template_form_fields[ $field_id ] = [
-                    'name'       => 'test_settings_fld[' . $field . ']',
+                $template_form_fields[$field_id] = [
+                    'name'       => 'test_settings_fld['.$field.']',
                     'label'      => $config['label'],
                     'input'      => $config['input'],
                     'type'       => $config['type'],
                     'required'   => $config['required'],
                     'validation' => $config['validation'],
-                    'value'      => isset($existing[ $field ]) ? $existing[ $field ] : $default,
+                    'value'      => isset($existing[$field]) ? $existing[$field] : $default,
                     'css_class'  => $config['css_class'],
                     'options'    => isset($config['options']) ? $config['options'] : [],
                     'default'    => $default,
@@ -2462,7 +2462,7 @@ 
             : '';
 
         // print out $test_settings_fields
-        if (! empty($test_settings_html)) {
+        if ( ! empty($test_settings_html)) {
             $test_settings_html .= '<input type="submit" class="button--primary mtp-test-button alignright" ';
             $test_settings_html .= 'name="test_button" value="';
             $test_settings_html .= esc_html__('Test Send', 'event_espresso');
@@ -2508,7 +2508,7 @@ 
         ];
 
         return EEH_Template::display_template(
-            EE_MSG_TEMPLATE_PATH . 'shortcode_selector_skeleton.template.php',
+            EE_MSG_TEMPLATE_PATH.'shortcode_selector_skeleton.template.php',
             $template_args,
             true
         );
@@ -2534,7 +2534,7 @@ 
         // $messenger = $this->_message_template_group->messenger_obj();
         // now let's set the content depending on the status of the shortcodes array
         if (empty($shortcodes)) {
-            echo '<p>' . esc_html__('There are no valid shortcodes available', 'event_espresso') . '</p>';
+            echo '<p>'.esc_html__('There are no valid shortcodes available', 'event_espresso').'</p>';
             return;
         }
         ?>
@@ -2570,7 +2570,7 @@ 
     {
 
         // no need to run this if the property is already set
-        if (! empty($this->_shortcodes)) {
+        if ( ! empty($this->_shortcodes)) {
             return;
         }
 
@@ -2625,7 +2625,7 @@ 
     protected function _set_message_template_group()
     {
         // get out if this is already set.
-        if (! empty($this->_message_template_group)) {
+        if ( ! empty($this->_message_template_group)) {
             return;
         }
 
@@ -2671,8 +2671,8 @@ 
                     <?php
                 }
                 // setup nonce_url
-                wp_nonce_field($args['action'] . '_nonce', $args['action'] . '_nonce', false);
-                $id = 'ee-' . sanitize_key($context_label['label']) . '-select';
+                wp_nonce_field($args['action'].'_nonce', $args['action'].'_nonce', false);
+                $id = 'ee-'.sanitize_key($context_label['label']).'-select';
                 ?>
                 <label for='<?php echo esc_attr($id); ?>' class='screen-reader-text'>
                     <?php esc_html_e('message context options', 'event_espresso'); ?>
@@ -2685,7 +2685,7 @@ 
                             $checked = ($context === $args['context']) ? 'selected' : '';
                             ?>
                             <option value="<?php echo esc_attr($context); ?>" <?php echo esc_attr($checked); ?>>
-                                <?php echo esc_html($context_details[ $context ]['label']); ?>
+                                <?php echo esc_html($context_details[$context]['label']); ?>
                             </option>
                         <?php endforeach;
                     endif; ?>
@@ -3076,7 +3076,7 @@ 
     {
         if (is_array($content)) {
             foreach ($content as $key => $value) {
-                $content[ $key ] = $this->sanitizeMessageTemplateContent($value);
+                $content[$key] = $this->sanitizeMessageTemplateContent($value);
             }
             return $content;
         }
@@ -3114,7 +3114,7 @@ 
 
         $context   = ucwords(str_replace('_', ' ', $context));
         $item_desc = $messenger_label && $message_type_label
-            ? $messenger_label . ' ' . $message_type_label . ' ' . $context . ' '
+            ? $messenger_label.' '.$message_type_label.' '.$context.' '
             : '';
         $item_desc .= 'Message Template';
         return $item_desc;
@@ -3266,7 +3266,7 @@ 
         if ($all) {
             // Checkboxes
             $checkboxes = $this->request->getRequestParam('checkbox', [], 'int', true);
-            if (! empty($checkboxes)) {
+            if ( ! empty($checkboxes)) {
                 // if array has more than one element then success message should be plural.
                 // todo: what about nonce?
                 $success = count($checkboxes) > 1 ? 2 : 1;
@@ -3276,18 +3276,18 @@ 
                     $trashed_or_restored = $trash
                         ? $this->getMtgModel()->delete_by_ID($GRP_ID)
                         : $this->getMtgModel()->restore_by_ID($GRP_ID);
-                    if (! $trashed_or_restored) {
+                    if ( ! $trashed_or_restored) {
                         $success = 0;
                     }
                 }
             } else {
                 // grab single GRP_ID and handle
                 $GRP_ID = $this->request->getRequestParam('id', 0, 'int');
-                if (! empty($GRP_ID)) {
+                if ( ! empty($GRP_ID)) {
                     $trashed_or_restored = $trash
                         ? $this->getMtgModel()->delete_by_ID($GRP_ID)
                         : $this->getMtgModel()->restore_by_ID($GRP_ID);
-                    if (! $trashed_or_restored) {
+                    if ( ! $trashed_or_restored) {
                         $success = 0;
                     }
                 } else {
@@ -3335,7 +3335,7 @@ 
 
         // checkboxes
         $checkboxes = $this->request->getRequestParam('checkbox', [], 'int', true);
-        if (! empty($checkboxes)) {
+        if ( ! empty($checkboxes)) {
             // if array has more than one element then success message should be plural
             $success = count($checkboxes) > 1 ? 2 : 1;
 
@@ -3439,7 +3439,7 @@ 
     protected function _set_m_mt_settings()
     {
         // first if this is already set then lets get out no need to regenerate data.
-        if (! empty($this->_m_mt_settings)) {
+        if ( ! empty($this->_m_mt_settings)) {
             return;
         }
 
@@ -3452,8 +3452,8 @@ 
 
         foreach ($messengers as $messenger) {
             $active = $this->_message_resource_manager->is_messenger_active($messenger->name);
-            $class = 'ee-messenger-' .  sanitize_key($messenger->label['singular']);
-            $this->_m_mt_settings['messenger_tabs'][ $messenger->name ] = [
+            $class = 'ee-messenger-'.sanitize_key($messenger->label['singular']);
+            $this->_m_mt_settings['messenger_tabs'][$messenger->name] = [
                 'label' => ucwords($messenger->label['singular']),
                 'class' => $active ? "{$class} messenger-active" : $class,
                 'href'  => $messenger->name,
@@ -3471,7 +3471,7 @@ 
             foreach ($message_types as $message_type) {
                 // first we need to verify that this message type is valid with this messenger. Cause if it isn't then
                 // it shouldn't show in either the inactive OR active metabox.
-                if (! in_array($message_type->name, $message_types_for_messenger, true)) {
+                if ( ! in_array($message_type->name, $message_types_for_messenger, true)) {
                     continue;
                 }
 
@@ -3482,12 +3482,12 @@ 
                     ? 'active'
                     : 'inactive';
 
-                $this->_m_mt_settings['message_type_tabs'][ $messenger->name ][ $a_or_i ][ $message_type->name ] = [
+                $this->_m_mt_settings['message_type_tabs'][$messenger->name][$a_or_i][$message_type->name] = [
                     'label'    => ucwords($message_type->label['singular']),
-                    'class'    => 'message-type-' . $a_or_i,
-                    'slug_id'  => $message_type->name . '-messagetype-' . $messenger->name,
-                    'mt_nonce' => wp_create_nonce($message_type->name . '_nonce'),
-                    'href'     => 'espresso_' . $message_type->name . '_message_type_settings',
+                    'class'    => 'message-type-'.$a_or_i,
+                    'slug_id'  => $message_type->name.'-messagetype-'.$messenger->name,
+                    'mt_nonce' => wp_create_nonce($message_type->name.'_nonce'),
+                    'href'     => 'espresso_'.$message_type->name.'_message_type_settings',
                     'title'    => $a_or_i === 'active'
                         ? esc_html__('Drag this message type to the Inactive window to deactivate', 'event_espresso')
                         : esc_html__('Drag this message type to the messenger to activate', 'event_espresso'),
@@ -3518,25 +3518,25 @@ 
         $fields                                         = $message_type->get_admin_settings_fields();
         $settings_template_args['template_form_fields'] = '';
 
-        if (! empty($fields) && $active) {
+        if ( ! empty($fields) && $active) {
             $existing_settings = $message_type->get_existing_admin_settings($messenger->name);
             foreach ($fields as $fldname => $fldprops) {
-                $field_id                         = $messenger->name . '-' . $message_type->name . '-' . $fldname;
-                $template_form_field[ $field_id ] = [
-                    'name'       => 'message_type_settings[' . $fldname . ']',
+                $field_id                         = $messenger->name.'-'.$message_type->name.'-'.$fldname;
+                $template_form_field[$field_id] = [
+                    'name'       => 'message_type_settings['.$fldname.']',
                     'label'      => $fldprops['label'],
                     'input'      => $fldprops['field_type'],
                     'type'       => $fldprops['value_type'],
                     'required'   => $fldprops['required'],
                     'validation' => $fldprops['validation'],
-                    'value'      => isset($existing_settings[ $fldname ])
-                        ? $existing_settings[ $fldname ]
+                    'value'      => isset($existing_settings[$fldname])
+                        ? $existing_settings[$fldname]
                         : $fldprops['default'],
                     'options'    => isset($fldprops['options'])
                         ? $fldprops['options']
                         : [],
-                    'default'    => isset($existing_settings[ $fldname ])
-                        ? $existing_settings[ $fldname ]
+                    'default'    => isset($existing_settings[$fldname])
+                        ? $existing_settings[$fldname]
                         : $fldprops['default'],
                     'css_class'  => 'no-drag',
                     'format'     => $fldprops['format'],
@@ -3556,15 +3556,15 @@ 
         $settings_template_args['description'] = $message_type->description;
         // we also need some hidden fields
         $hidden_fields = [
-            'message_type_settings[messenger]' . $message_type->name    => [
+            'message_type_settings[messenger]'.$message_type->name    => [
                 'type'  => 'hidden',
                 'value' => $messenger->name,
             ],
-            'message_type_settings[message_type]' . $message_type->name => [
+            'message_type_settings[message_type]'.$message_type->name => [
                 'type'  => 'hidden',
                 'value' => $message_type->name,
             ],
-            'type' . $message_type->name                                => [
+            'type'.$message_type->name                                => [
                 'type'  => 'hidden',
                 'value' => 'message_type',
             ],
@@ -3574,12 +3574,12 @@ 
             $hidden_fields,
             'array'
         );
-        $settings_template_args['show_form']     = empty($settings_template_args['template_form_fields'])
+        $settings_template_args['show_form'] = empty($settings_template_args['template_form_fields'])
             ? ' hidden'
             : '';
 
 
-        $template = EE_MSG_TEMPLATE_PATH . 'ee_msg_mt_settings_content.template.php';
+        $template = EE_MSG_TEMPLATE_PATH.'ee_msg_mt_settings_content.template.php';
         return EEH_Template::display_template($template, $settings_template_args, true);
     }
 
@@ -3607,21 +3607,21 @@ 
 
                 // messenger meta boxes
                 $active         = $selected_messenger === $messenger;
-                $active_mt_tabs = isset($this->_m_mt_settings['message_type_tabs'][ $messenger ]['active'])
-                    ? $this->_m_mt_settings['message_type_tabs'][ $messenger ]['active']
+                $active_mt_tabs = isset($this->_m_mt_settings['message_type_tabs'][$messenger]['active'])
+                    ? $this->_m_mt_settings['message_type_tabs'][$messenger]['active']
                     : '';
 
-                $m_boxes[ $messenger . '_a_box' ] = sprintf(
+                $m_boxes[$messenger.'_a_box'] = sprintf(
                     esc_html__('%s Settings', 'event_espresso'),
                     $tab_array['label']
                 );
 
-                $m_template_args[ $messenger . '_a_box' ] = [
+                $m_template_args[$messenger.'_a_box'] = [
                     'active_message_types'   => ! empty($active_mt_tabs) ? $this->_get_mt_tabs($active_mt_tabs) : '',
                     'inactive_message_types' => isset(
-                        $this->_m_mt_settings['message_type_tabs'][ $messenger ]['inactive']
+                        $this->_m_mt_settings['message_type_tabs'][$messenger]['inactive']
                     )
-                        ? $this->_get_mt_tabs($this->_m_mt_settings['message_type_tabs'][ $messenger ]['inactive'])
+                        ? $this->_get_mt_tabs($this->_m_mt_settings['message_type_tabs'][$messenger]['inactive'])
                         : '',
                     'content'                => $this->_get_messenger_box_content($tab_array['obj']),
                     'hidden'                 => $active ? '' : ' hidden',
@@ -3633,13 +3633,13 @@ 
                 // message type meta boxes
                 // (which is really just the inactive container for each messenger
                 // showing inactive message types for that messenger)
-                $mt_boxes[ $messenger . '_i_box' ]         = esc_html__('Inactive Message Types', 'event_espresso');
-                $mt_template_args[ $messenger . '_i_box' ] = [
+                $mt_boxes[$messenger.'_i_box']         = esc_html__('Inactive Message Types', 'event_espresso');
+                $mt_template_args[$messenger.'_i_box'] = [
                     'active_message_types'   => ! empty($active_mt_tabs) ? $this->_get_mt_tabs($active_mt_tabs) : '',
                     'inactive_message_types' => isset(
-                        $this->_m_mt_settings['message_type_tabs'][ $messenger ]['inactive']
+                        $this->_m_mt_settings['message_type_tabs'][$messenger]['inactive']
                     )
-                        ? $this->_get_mt_tabs($this->_m_mt_settings['message_type_tabs'][ $messenger ]['inactive'])
+                        ? $this->_get_mt_tabs($this->_m_mt_settings['message_type_tabs'][$messenger]['inactive'])
                         : '',
                     'hidden'                 => $active ? '' : ' hidden',
                     'hide_on_message'        => $hide_on_message,
@@ -3652,14 +3652,14 @@ 
 
 
         // register messenger metaboxes
-        $m_template_path = EE_MSG_TEMPLATE_PATH . 'ee_msg_details_messenger_mt_meta_box.template.php';
+        $m_template_path = EE_MSG_TEMPLATE_PATH.'ee_msg_details_messenger_mt_meta_box.template.php';
         foreach ($m_boxes as $box => $label) {
-            $callback_args = ['template_path' => $m_template_path, 'template_args' => $m_template_args[ $box ]];
+            $callback_args = ['template_path' => $m_template_path, 'template_args' => $m_template_args[$box]];
             $msgr          = str_replace('_a_box', '', $box);
             $this->addMetaBox(
-                'espresso_' . $msgr . '_settings',
+                'espresso_'.$msgr.'_settings',
                 $label,
-                function ($post, $metabox) {
+                function($post, $metabox) {
                     EEH_Template::display_template(
                         $metabox['args']['template_path'],
                         $metabox['args']['template_args']
@@ -3673,17 +3673,17 @@ 
         }
 
         // register message type metaboxes
-        $mt_template_path = EE_MSG_TEMPLATE_PATH . 'ee_msg_details_messenger_meta_box.template.php';
+        $mt_template_path = EE_MSG_TEMPLATE_PATH.'ee_msg_details_messenger_meta_box.template.php';
         foreach ($mt_boxes as $box => $label) {
             $callback_args = [
                 'template_path' => $mt_template_path,
-                'template_args' => $mt_template_args[ $box ],
+                'template_args' => $mt_template_args[$box],
             ];
-            $mt            = str_replace('_i_box', '', $box);
+            $mt = str_replace('_i_box', '', $box);
             $this->addMetaBox(
-                'espresso_' . $mt . '_inactive_mts',
+                'espresso_'.$mt.'_inactive_mts',
                 $label,
-                function ($post, $metabox) {
+                function($post, $metabox) {
                     EEH_Template::display_template(
                         $metabox['args']['template_path'],
                         $metabox['args']['template_args']
@@ -3830,7 +3830,7 @@ 
             if ($form->is_valid()) {
                 $valid_data = $form->valid_data();
                 foreach ($valid_data as $property => $value) {
-                    $setter = 'set_' . $property;
+                    $setter = 'set_'.$property;
                     if (method_exists($network_config, $setter)) {
                         $network_config->{$setter}($value);
                     } elseif (
@@ -3866,7 +3866,7 @@ 
     protected function _get_mt_tabs($tab_array)
     {
         $tab_array = (array) $tab_array;
-        $template  = EE_MSG_TEMPLATE_PATH . 'ee_msg_details_mt_settings_tab_item.template.php';
+        $template  = EE_MSG_TEMPLATE_PATH.'ee_msg_details_mt_settings_tab_item.template.php';
         $tabs      = '';
 
         foreach ($tab_array as $tab) {
@@ -3894,19 +3894,19 @@ 
         $settings_template_args['active'] = $this->_message_resource_manager->is_messenger_active($messenger->name);
 
 
-        if (! empty($fields)) {
+        if ( ! empty($fields)) {
             $existing_settings = $messenger->get_existing_admin_settings();
 
             foreach ($fields as $field_name => $field_props) {
-                $field_id                         = $messenger->name . '-' . $field_name;
-                $template_form_field[ $field_id ] = [
-                    'name'       => 'messenger_settings[' . $field_id . ']',
+                $field_id                         = $messenger->name.'-'.$field_name;
+                $template_form_field[$field_id] = [
+                    'name'       => 'messenger_settings['.$field_id.']',
                     'label'      => $field_props['label'],
                     'input'      => $field_props['field_type'],
                     'type'       => $field_props['value_type'],
                     'required'   => $field_props['required'],
                     'validation' => $field_props['validation'],
-                    'value'      => $existing_settings[ $field_id ] ?? $field_props['default'],
+                    'value'      => $existing_settings[$field_id] ?? $field_props['default'],
                     'css_class'  => '',
                     'format'     => $field_props['format'],
                 ];
@@ -3919,20 +3919,20 @@ 
 
         // we also need some hidden fields
         $settings_template_args['hidden_fields'] = [
-            'messenger_settings[messenger]' . $messenger->name => [
+            'messenger_settings[messenger]'.$messenger->name => [
                 'type'  => 'hidden',
                 'value' => $messenger->name,
             ],
-            'type' . $messenger->name                          => [
+            'type'.$messenger->name                          => [
                 'type'  => 'hidden',
                 'value' => 'messenger',
             ],
         ];
 
         // make sure any active message types that are existing are included in the hidden fields
-        if (isset($this->_m_mt_settings['message_type_tabs'][ $messenger->name ]['active'])) {
-            foreach ($this->_m_mt_settings['message_type_tabs'][ $messenger->name ]['active'] as $mt => $values) {
-                $settings_template_args['hidden_fields'][ 'messenger_settings[message_types][' . $mt . ']' ] = [
+        if (isset($this->_m_mt_settings['message_type_tabs'][$messenger->name]['active'])) {
+            foreach ($this->_m_mt_settings['message_type_tabs'][$messenger->name]['active'] as $mt => $values) {
+                $settings_template_args['hidden_fields']['messenger_settings[message_types]['.$mt.']'] = [
                     'type'  => 'hidden',
                     'value' => $mt,
                 ];
@@ -3942,7 +3942,7 @@ 
             $settings_template_args['hidden_fields'],
             'array'
         );
-        $active                                  =
+        $active =
             $this->_message_resource_manager->is_messenger_active($messenger->name);
 
         $settings_template_args['messenger']           = $messenger->name;
@@ -3962,9 +3962,9 @@ 
 
 
         $settings_template_args['on_off_action'] = $active ? 'messenger-off' : 'messenger-on';
-        $settings_template_args['nonce']         = wp_create_nonce('activate_' . $messenger->name . '_toggle_nonce');
+        $settings_template_args['nonce']         = wp_create_nonce('activate_'.$messenger->name.'_toggle_nonce');
         $settings_template_args['on_off_status'] = $active;
-        $template                                = EE_MSG_TEMPLATE_PATH . 'ee_msg_m_settings_content.template.php';
+        $template                                = EE_MSG_TEMPLATE_PATH.'ee_msg_m_settings_content.template.php';
         return EEH_Template::display_template(
             $template,
             $settings_template_args,
@@ -3989,7 +3989,7 @@ 
         $this->_prep_default_response_for_messenger_or_message_type_toggle();
         // let's check that we have required data
 
-        if (! $this->_active_messenger_name) {
+        if ( ! $this->_active_messenger_name) {
             EE_Error::add_error(
                 esc_html__('Messenger name needed to toggle activation. None given', 'event_espresso'),
                 __FILE__,
@@ -4007,7 +4007,7 @@ 
 
 
         $status = $this->request->getRequestParam('status');
-        if (! $status) {
+        if ( ! $status) {
             EE_Error::add_error(
                 esc_html__(
                     'Messenger status needed to know whether activation or deactivation is happening. No status is given',
@@ -4064,7 +4064,7 @@ 
         $this->_prep_default_response_for_messenger_or_message_type_toggle();
 
         // let's make sure we have the necessary data
-        if (! $this->_active_message_type_name) {
+        if ( ! $this->_active_message_type_name) {
             EE_Error::add_error(
                 esc_html__('Message Type name needed to toggle activation. None given', 'event_espresso'),
                 __FILE__,
@@ -4074,7 +4074,7 @@ 
             $success = false;
         }
 
-        if (! $this->_active_messenger_name) {
+        if ( ! $this->_active_messenger_name) {
             EE_Error::add_error(
                 esc_html__('Messenger name needed to toggle activation. None given', 'event_espresso'),
                 __FILE__,
@@ -4085,7 +4085,7 @@ 
         }
 
         $status = $this->request->getRequestParam('status');
-        if (! $status) {
+        if ( ! $status) {
             EE_Error::add_error(
                 esc_html__(
                     'Messenger status needed to know whether activation or deactivation is happening. No status is given',
@@ -4297,7 +4297,7 @@ 
         EE_Message_Type $message_type = null
     ) {
         // if $messenger isn't a valid messenger object then get out.
-        if (! $messenger instanceof EE_Messenger) {
+        if ( ! $messenger instanceof EE_Messenger) {
             EE_Error::add_error(
                 esc_html__('The messenger being activated is not a valid messenger', 'event_espresso'),
                 __FILE__,
@@ -4351,7 +4351,7 @@ 
             // message types after the activation process.  However its possible some messengers don't HAVE any default_message_types
             // in which case we just give a success message for the messenger being successfully activated.
         } else {
-            if (! $messenger->get_default_message_types()) {
+            if ( ! $messenger->get_default_message_types()) {
                 // messenger doesn't have any default message types so still a success.
                 EE_Error::add_success(
                     sprintf(
@@ -4407,7 +4407,7 @@ 
         EE_Error::overwrite_success();
 
         // if $messenger isn't a valid messenger object then get out.
-        if (! $messenger instanceof EE_Messenger) {
+        if ( ! $messenger instanceof EE_Messenger) {
             EE_Error::add_error(
                 esc_html__('The messenger being deactivated is not a valid messenger', 'event_espresso'),
                 __FILE__,
@@ -4477,7 +4477,7 @@ 
      */
     public function update_mt_form()
     {
-        if (! $this->_active_messenger_name || ! $this->_active_message_type_name) {
+        if ( ! $this->_active_messenger_name || ! $this->_active_message_type_name) {
             EE_Error::add_error(
                 esc_html__('Require message type or messenger to send an updated form', 'event_espresso'),
                 __FILE__,
@@ -4488,7 +4488,7 @@ 
         }
 
         $message_types = $this->get_installed_message_types();
-        $message_type  = $message_types[ $this->_active_message_type_name ];
+        $message_type  = $message_types[$this->_active_message_type_name];
         $messenger     = $this->_message_resource_manager->get_active_messenger($this->_active_messenger_name);
         $content       = $this->_message_type_settings_content($message_type, $messenger, true);
 
@@ -4507,7 +4507,7 @@ 
     public function save_settings()
     {
         $type = $this->request->getRequestParam('type');
-        if (! $type) {
+        if ( ! $type) {
             EE_Error::add_error(
                 esc_html__(
                     'Cannot save settings because type is unknown (messenger settings or message type settings?)',

caffeinated/EE_Caf_Messages.class.php

Indentation +802 added lines, -802 removed lines

@@ -10,806 +10,806 @@
  */
 class EE_Caf_Messages
 {
-    /**
-     * constructor.
-     */
-    public function __construct()
-    {
-        $this->_caf_hooks();
-    }
-
-
-    /**
-     * Contains all the hooks filters for setting up caffeinated messages functionality.
-     *
-     * @since 4.3.2
-     *
-     * @return void
-     */
-    private function _caf_hooks()
-    {
-        add_filter('FHEE__EED_Messages___set_messages_paths___MSG_PATHS', array($this, 'messages_autoload_paths'), 5);
-        add_filter(
-            'FHEE__EE_Email_messenger__get_validator_config',
-            array($this, 'email_messenger_validator_config'),
-            5,
-            2
-        );
-        add_filter(
-            'FHEE__EE_Email_messenger__get_template_fields',
-            array($this, 'email_messenger_template_fields'),
-            5,
-            2
-        );
-        add_filter(
-            'FHEE__EE_Html_messenger__get_template_fields',
-            array($this, 'html_messenger_template_fields'),
-            5,
-            2
-        );
-        add_filter(
-            'FHEE__EE_Html_messenger__get_validator_config',
-            array($this, 'html_messenger_validator_config'),
-            5,
-            2
-        );
-        add_filter('FHEE__EE_Pdf_messenger__get_template_fields', array($this, 'pdf_messenger_template_fields'), 5, 2);
-        add_filter(
-            'FHEE__EE_Pdf_messenger__get_validator_config',
-            array($this, 'pdf_messenger_validator_config'),
-            5,
-            2
-        );
-        add_filter(
-            'FHEE__EE_Messages_Template_Pack__get_specific_template__contents',
-            array($this, 'new_default_templates'),
-            5,
-            7
-        );
-        add_filter(
-            'FHEE__EE_Messages_Base__get_valid_shortcodes',
-            array($this, 'message_types_valid_shortcodes'),
-            5,
-            2
-        );
-
-        // shortcode parsers
-        add_filter('FHEE__EE_Attendee_Shortcodes__shortcodes', array($this, 'additional_attendee_shortcodes'), 5, 2);
-        add_filter('FHEE__EE_Attendee_Shortcodes__parser_after', array($this, 'additional_attendee_parser'), 5, 5);
-        add_filter(
-            'FHEE__EE_Recipient_List_Shortcodes__shortcodes',
-            array($this, 'additional_recipient_details_shortcodes'),
-            5,
-            2
-        );
-        add_filter(
-            'FHEE__EE_Recipient_List_Shortcodes__parser_after',
-            array($this, 'additional_recipient_details_parser'),
-            5,
-            5
-        );
-        add_filter(
-            'FHEE__EE_Primary_Registration_List_Shortcodes__shortcodes',
-            array($this, 'additional_primary_registration_details_shortcodes'),
-            5,
-            2
-        );
-        add_filter(
-            'FHEE__EE_Primary_Registration_List_Shortcodes__parser_after',
-            array($this, 'additional_primary_registration_details_parser'),
-            5,
-            5
-        );
-
-        /**
-         * @since 4.2.0
-         */
-        add_filter('FHEE__EE_Datetime_Shortcodes__shortcodes', array($this, 'additional_datetime_shortcodes'), 10, 2);
-        add_filter('FHEE__EE_Datetime_Shortcodes__parser_after', array($this, 'additional_datetime_parser'), 10, 5);
-
-        /**
-         * @since 4.3.0
-         */
-        // eat our own dog food!
-        add_action('EE_Brewing_Regular___messages_caf', array($this, 'register_caf_message_types'));
-        add_action('EE_Brewing_Regular___messages_caf', array($this, 'register_caf_shortcodes'));
-        do_action('EE_Brewing_Regular___messages_caf');
-    }
-
-
-    /**
-     * This just allows us to add additional paths to the autoloader (EED_Messages::autoload_messages()) for the
-     * messages system.
-     *
-     * @param  array $dir_ref original array of paths
-     *
-     * @return array           appended paths
-     */
-    public function messages_autoload_paths($dir_ref)
-    {
-        $dir_ref[] = EE_CAF_LIBRARIES . 'shortcodes/';
-
-        return $dir_ref;
-    }
-
-
-    public function email_messenger_validator_config($validator_config, EE_Email_messenger $messenger)
-    {
-        $validator_config['attendee_list'] = array(
-            'shortcodes' => array('attendee', 'event_list', 'ticket_list', 'question_list'),
-            'required'   => array('[ATTENDEE_LIST]'),
-        );
-        $validator_config['question_list'] = array(
-            'shortcodes' => array('question'),
-            'required'   => array('[QUESTION_LIST]'),
-        );
-
-        return $validator_config;
-    }
-
-
-    public function html_messenger_validator_config($validator_config, EE_Html_messenger $messenger)
-    {
-        $validator_config['attendee_list'] = array(
-            'shortcodes' => array('attendee', 'question_list'),
-            'required'   => array('[ATTENDEE_LIST]'),
-        );
-        $validator_config['question_list'] = array(
-            'shortcodes' => array('question'),
-            'required'   => array('[QUESTION_LIST]'),
-        );
-
-        return $validator_config;
-    }
-
-
-    public function pdf_messenger_validator_config($validator_config, EE_Pdf_messenger $messenger)
-    {
-        $validator_config['attendee_list'] = array(
-            'shortcodes' => array('attendee', 'event_list', 'ticket_list', 'question_list'),
-            'required'   => array('[ATTENDEE_LIST]'),
-        );
-        $validator_config['question_list'] = array(
-            'shortcodes' => array('question'),
-            'required'   => array('[QUESTION_LIST]'),
-        );
-
-        return $validator_config;
-    }
-
-
-    public function email_messenger_template_fields($template_fields, EE_Email_messenger $messenger)
-    {
-        $template_fields['extra']['content']['question_list'] = array(
-            'input'               => 'textarea',
-            'label'               => '[QUESTION_LIST]',
-            'type'                => 'string',
-            'required'            => false,
-            'validation'          => true,
-            'format'              => '%s',
-            'css_class'           => 'large-text',
-            'rows'                => '5',
-            'shortcodes_required' => array('[QUESTION_LIST]'),
-        );
-
-        return $template_fields;
-    }
-
-
-    public function html_messenger_template_fields($template_fields, EE_Html_messenger $messenger)
-    {
-        $template_fields['extra']['content']['question_list'] = array(
-            'input'               => 'textarea',
-            'label'               => '[QUESTION_LIST]',
-            'type'                => 'string',
-            'required'            => false,
-            'validation'          => true,
-            'format'              => '%s',
-            'css_class'           => 'large-text',
-            'rows'                => '5',
-            'shortcodes_required' => array('[QUESTION_LIST]'),
-        );
-
-        return $template_fields;
-    }
-
-
-    public function pdf_messenger_template_fields($template_fields, EE_Pdf_messenger $messenger)
-    {
-        $template_fields['extra']['content']['question_list'] = array(
-            'input'               => 'textarea',
-            'label'               => '[QUESTION_LIST]',
-            'type'                => 'string',
-            'required'            => false,
-            'validation'          => true,
-            'format'              => '%s',
-            'css_class'           => 'large-text',
-            'rows'                => '5',
-            'shortcodes_required' => array('[QUESTION_LIST]'),
-        );
-
-        return $template_fields;
-    }
-
-
-    public function new_default_templates(
-        $contents,
-        $actual_path,
-        EE_messenger $messenger,
-        EE_message_type $message_type,
-        $field,
-        $context,
-        EE_Messages_Template_Pack $template_pack
-    ) {
-
-        // we're only modifying templates for the default template pack
-        if (! $template_pack instanceof EE_Messages_Template_Pack_Default) {
-            return $contents;
-        }
-
-        // the template file name we're replacing contents for.
-        $template_file_prefix = $field . '_' . $context;
-        $msg_prefix = $messenger->name . '_' . $message_type->name . '_';
-
-        $base_path = EE_CAF_LIBRARIES . 'messages/defaults/default/';
-
-        if ($messenger->name == 'email' && $message_type->name == 'registration') {
-            switch ($template_file_prefix) {
-                case 'question_list_admin':
-                case 'question_list_attendee':
-                case 'question_list_primary_attendee':
-                    $path = $base_path . $msg_prefix . 'question_list.template.php';
-                    $contents = EEH_Template::display_template($path, array(), true);
-                    break;
-
-                case 'attendee_list_primary_attendee':
-                    $path = $base_path . $msg_prefix . 'attendee_list.template.php';
-                    $contents = EEH_Template::display_template($path, array(), true);
-                    break;
-
-                case 'attendee_list_admin':
-                    $path = $base_path . $msg_prefix . 'attendee_list_admin.template.php';
-                    $contents = EEH_Template::display_template(
-                        $path,
-                        array(),
-                        true
-                    );
-                    break;
-
-                case 'attendee_list_attendee':
-                    $contents = '';
-                    break;
-
-                case 'event_list_attendee':
-                    $path = $base_path . $msg_prefix . 'event_list_attendee.template.php';
-                    $contents = EEH_Template::display_template($path, array(), true);
-                    break;
-            }
-        } elseif ($messenger->name == 'email' && $message_type->name == 'newsletter') {
-            switch ($template_file_prefix) {
-                case 'content_attendee':
-                    $path = $base_path . $msg_prefix . 'content.template.php';
-                    $contents = EEH_Template::display_template($path, array(), true);
-                    break;
-
-                case 'newsletter_content_attendee':
-                    $path = $base_path . $msg_prefix . 'newsletter_content.template.php';
-                    $contents = EEH_Template::display_template($path, array(), true);
-                    break;
-
-                case 'newsletter_subject_attendee':
-                    $path = $base_path . $msg_prefix . 'subject.template.php';
-                    $contents = EEH_Template::display_template($path, array(), true);
-                    break;
-            }
-        } elseif ($messenger->name == 'html' && $message_type->name == 'receipt') {
-            switch ($template_file_prefix) {
-                case 'attendee_list_purchaser':
-                    $path = $base_path . $msg_prefix . 'attendee_list.template.php';
-                    $contents = EEH_Template::display_template($path, array(), true);
-                    break;
-            }
-        }
-
-        return $contents;
-    }
-
-
-    public function message_types_valid_shortcodes($valid_shortcodes, EE_Messages_Base $msg)
-    {
-        // make sure question_list and question are ONLY added for the core message types.  Any other message types will have to explicitly set question_list as a valid shortcode.
-        $include_with = array(
-            'registration',
-            'cancelled_registration',
-            'declined_registration',
-            'not_approved_registration',
-            'payment_declined',
-            'payment_failed',
-            'payment_cancelled',
-            'payment',
-            'payment_reminder',
-            'pending_approval',
-            'registration_summary',
-            'invoice',
-            'receipt',
-        );
-        if ($msg instanceof EE_message_type && in_array($msg->name, $include_with)) {
-            $contexts = array_keys($msg->get_contexts());
-            foreach ($contexts as $context) {
-                $valid_shortcodes[ $context ][] = 'question_list';
-                $valid_shortcodes[ $context ][] = 'question';
-            }
-        }
-
-        return $valid_shortcodes;
-    }
-
-
-    public function additional_attendee_shortcodes($shortcodes, $shortcode_parser)
-    {
-        $shortcodes['[ANSWER_*]'] = esc_html__(
-            'This is a special dynamic shortcode. Right after the "*", add the exact text of a existing question, and if there is an answer for that question for this registrant, that will take the place of this shortcode.',
-            'event_espresso'
-        );
-
-        return $shortcodes;
-    }
-
-
-    public function additional_attendee_parser($parsed, $shortcode, $data, $extra_data, $shortcode_parser)
-    {
-
-        if (
-            strpos($shortcode, '[ANSWER_*') === false
-            || ! isset($extra_data['data']->questions)
-            || ! isset($extra_data['data']->registrations)
-        ) {
-            return $parsed;
-        }
-
-        // let's get the question from the code.
-        $shortcode = str_replace('[ANSWER_*', '', $shortcode);
-        $shortcode = trim(str_replace(']', '', $shortcode));
-
-        $registration = $data instanceof EE_Registration ? $data : null;
-        $registration = ! $registration instanceof EE_Registration && is_array(
-            $extra_data
-        ) && isset($extra_data['data']) && $extra_data['data'] instanceof EE_Registration ? $extra_data['data'] : $registration;
-
-        $aee = $data instanceof EE_Messages_Addressee ? $data : null;
-        $aee = ! $aee instanceof EE_Messages_Addressee && is_array(
-            $extra_data
-        ) && isset($extra_data['data']) ? $extra_data['data'] : $aee;
-
-        if (! $registration instanceof EE_Registration || ! $aee instanceof EE_Messages_Addressee) {
-            return $parsed;
-        }
-
-        // now let's figure out which question has this text.
-        foreach ($aee->questions as $ansid => $question) {
-            if (
-                $question instanceof EE_Question
-                && trim($question->display_text()) == trim($shortcode)
-                && isset($aee->registrations[ $registration->ID() ]['ans_objs'][ $ansid ])
-            ) {
-                return $aee->registrations[ $registration->ID() ]['ans_objs'][ $ansid ]->get_pretty(
-                    'ANS_value',
-                    'no_wpautop'
-                );
-            }
-        }
-
-        // nothing!
-        return $parsed;
-    }
-
-
-    /**
-     * Callback for additional shortcodes filter for adding additional datetime shortcodes.
-     *
-     * @since  4.2
-     *
-     * @param  array                  $shortcodes         array of shortcodes and
-     *                                                    descriptions
-     * @param  EE_Datetime_Shortcodes $shortcode_parser   EE_Shortcodes object
-     *
-     * @return array                                        array of shortcodes and
-     *                                                        descriptions
-     */
-    public function additional_datetime_shortcodes($shortcodes, $shortcode_parser)
-    {
-        $shortcodes['[DTT_NAME]'] = esc_html__(
-            'This will be parsed to the Title given for a Datetime',
-            'event_espresso'
-        );
-        $shortcodes['[DTT_DESCRIPTION]'] = esc_html__(
-            'This will be parsed to the description for a Datetime',
-            'event_espresso'
-        );
-        $shortcodes['[DTT_NAME_OR_DATES]'] = esc_html__(
-            'When parsed, if the Datetime has a name, it is used, otherwise a formatted string including the start date and end date will be used.',
-            'event_espresso'
-        );
-
-        return $shortcodes;
-    }
-
-
-    /**
-     * Callback for additional shortcodes parser filter used for adding parser for new
-     * Datetime shortcodes
-     *
-     * @since  4.2
-     *
-     * @param  string                 $parsed     The finished parsed string for the given shortcode.
-     * @param  string                 $shortcode  The shortcode being parsed.
-     * @param  object                 $data       The incoming data object for the Shortcode Parser.
-     * @param  object                 $extra_data The incoming extra date object for the Shortcode
-     *                                            Parser.
-     * @param  EE_Datetime_Shortcodes $shortcode_parser
-     *
-     * @return string                   The new parsed string.
-     */
-    public function additional_datetime_parser($parsed, $shortcode, $data, $extra_data, $shortcode_parser)
-    {
-
-        if (! $data instanceof EE_Datetime) {
-            return ''; // get out because we can only parse with the datetime object.
-        }
-
-        switch ($shortcode) {
-            case '[DTT_NAME]':
-                return $data->name();
-                break;
-            case '[DTT_DESCRIPTION]':
-                return $data->description();
-                break;
-            case '[DTT_NAME_OR_DATES]':
-                return $data->get_dtt_display_name(true);
-                break;
-            default:
-                return $parsed;
-                break;
-        }
-    }
-
-
-    public function additional_recipient_details_shortcodes($shortcodes, $shortcode_parser)
-    {
-        $shortcodes['[RECIPIENT_QUESTION_LIST]'] = esc_html__(
-            'This is used to indicate where you want the list of questions and answers to show for the person receiving the message.',
-            'event_espresso'
-        );
-
-        return $shortcodes;
-    }
-
-
-    /**
-     * Callback for FHEE__EE_Recipient_List_Shortcodes__parser_after filter (dynamic filter).
-     *
-     * @param string         $parsed           The original parsed content for the shortcode
-     * @param string         $shortcode        The shortcode being parsed
-     * @param array          $data             The shortcode parser data array
-     * @param array          $extra_data       The shortcode parser extra data array
-     * @param \EE_Shortcodes $shortcode_parser Shortcode parser.
-     *
-     * @return string
-     */
-    public function additional_recipient_details_parser($parsed, $shortcode, $data, $extra_data, $shortcode_parser)
-    {
-
-        if (array($data) && ! isset($data['data'])) {
-            return $parsed;
-        }
-
-        $recipient = $data['data'] instanceof EE_Messages_Addressee ? $data['data'] : null;
-        $recipient = ! $recipient instanceof EE_Messages_Addressee && array($extra_data) && isset($extra_data['data']) && $extra_data['data'] instanceof EE_Messages_Addressee ? $extra_data['data'] : $recipient;
-
-        if (! $recipient instanceof EE_Messages_Addressee) {
-            return $parsed;
-        }
-
-        switch ($shortcode) {
-            case '[RECIPIENT_QUESTION_LIST]':
-                $att = $recipient->att_obj;
-                $registrations_on_attendee = $att instanceof EE_Attendee
-                    ? $recipient->attendees[ $att->ID() ]['reg_objs']
-                    : array();
-                $registrations_on_attendee = empty($registrations_on_attendee) && $recipient->reg_obj instanceof EE_Registration ? array($recipient->reg_obj) : $registrations_on_attendee;
-                $answers = array();
-
-                $template = is_array($data['template']) && isset($data['template']['question_list'])
-                    ? $data['template']['question_list']
-                    : $extra_data['template']['question_list'];
-                $valid_shortcodes = array('question');
-
-                // if the context is main_content then get all answers for all registrations on this attendee
-                if ($data['data'] instanceof EE_Messages_Addressee) {
-                    foreach ($registrations_on_attendee as $reg) {
-                        if ($reg instanceof EE_Registration) {
-                            $anss = ! empty($recipient->registrations[ $reg->ID() ]['ans_objs'])
-                                ? $recipient->registrations[ $reg->ID() ]['ans_objs']
-                                : array();
-                            foreach ($anss as $ans) {
-                                if ($ans instanceof EE_Answer) {
-                                    $answers[ $ans->ID() ] = $ans;
-                                }
-                            }
-                        }
-                    }
-                }
-
-                // if the context is the event list parser, then let's return just the answers for all registrations attached to the recipient for that event.
-                if ($data['data'] instanceof EE_Event) {
-                    $event = $data['data'];
-                    foreach ($registrations_on_attendee as $reg) {
-                        if ($reg instanceof EE_Registration && $reg->event_ID() == $event->ID()) {
-                            $anss = ! empty($recipient->registrations[ $reg->ID() ]['ans_objs'])
-                                ? $recipient->registrations[ $reg->ID() ]['ans_objs']
-                                : array();
-                            foreach ($anss as $ans) {
-                                if ($ans instanceof EE_Answer) {
-                                    $answers[ $ans->ID() ] = $ans;
-                                }
-                            }
-                        }
-                    }
-                }
-
-                $questions = $questions = isset($recipient->questions) ? $recipient->questions : array();
-
-                // if $extra_data does not have a 'data' key then let's make sure we add it and set the EE_Messages_Addressee
-                // object on it.
-                if (! isset($extra_data['data'])) {
-                    $extra_data['data'] = $recipient;
-                }
-
-                return $this->_parse_question_list_for_primary_or_recipient_registration(
-                    $shortcode_parser,
-                    $questions,
-                    $answers,
-                    $template,
-                    $valid_shortcodes,
-                    $extra_data
-                );
-                break;
-
-            default:
-                return $parsed;
-                break;
-        }
-    }
-
-
-    public function additional_primary_registration_details_shortcodes($shortcodes, $shortcode_parser)
-    {
-        $shortcodes['[PRIMARY_REGISTRANT_QUESTION_LIST]'] = esc_html__(
-            'This is used to indicate the questions and answers for the primary_registrant. It should be placed in the "[attendee_list]" field',
-            'event_espresso'
-        );
-
-        return $shortcodes;
-    }
-
-
-    /**
-     * Callback for FHEE__EE_Primary_Registration_List_Shortcodes__parser_after filter (dynamic filter).
-     *
-     * @param string         $parsed           The original parsed content for the shortcode
-     * @param string         $shortcode        The shortcode being parsed
-     * @param array          $data             The shortcode parser data array
-     * @param array          $extra_data       The shortcode parser extra data array
-     * @param \EE_Shortcodes $shortcode_parser Shortcode parser.
-     *
-     * @return string
-     */
-    public function additional_primary_registration_details_parser(
-        $parsed,
-        $shortcode,
-        $data,
-        $extra_data,
-        $shortcode_parser
-    ) {
-        if (array($data) && ! isset($data['data'])) {
-            return $parsed;
-        }
-
-        $recipient = $data['data'] instanceof EE_Messages_Addressee ? $data['data'] : null;
-        $recipient = ! $recipient instanceof EE_Messages_Addressee && array($extra_data) && isset($extra_data['data']) && $extra_data['data'] instanceof EE_Messages_Addressee ? $extra_data['data'] : $recipient;
-
-        if (! $recipient instanceof EE_Messages_Addressee) {
-            return $parsed;
-        }
-
-        switch ($shortcode) {
-            case '[PRIMARY_REGISTRANT_QUESTION_LIST]':
-                if (! $recipient->primary_att_obj instanceof EE_Attendee || ! $recipient->primary_reg_obj instanceof EE_Registration) {
-                    return '';
-                }
-                $registration = $recipient->primary_reg_obj;
-                $answers = isset($recipient->registrations[ $registration->ID() ]['ans_objs'])
-                    ? $recipient->registrations[ $registration->ID() ]['ans_objs']
-                    : array();
-                if (empty($answers)) {
-                    return '';
-                }
-                $template = is_array($data['template']) && isset($data['template']['question_list'])
-                    ? $data['template']['question_list']
-                    : $extra_data['template']['question_list'];
-                $valid_shortcodes = array('question');
-                $answers = $recipient->registrations[ $registration->ID() ]['ans_objs'];
-                $questions = isset($recipient->questions) ? $recipient->questions : array();
-                // if $extra_data does not have a 'data' key then let's make sure we add it and set the EE_Messages_Addressee
-                // object on it.
-                if (! isset($extra_data['data'])) {
-                    $extra_data['data'] = $recipient;
-                }
-                return $this->_parse_question_list_for_primary_or_recipient_registration(
-                    $shortcode_parser,
-                    $questions,
-                    $answers,
-                    $template,
-                    $valid_shortcodes,
-                    $extra_data
-                );
-                break;
-
-            default:
-                return $parsed;
-                break;
-        }
-    }
-
-
-    /**
-     * Takes care of registering the  message types that are only available in caffeinated EE.
-     *
-     * @since   4.3.2
-     *
-     * @return  void
-     */
-    public function register_caf_message_types()
-    {
-        // register newsletter message type
-        $setup_args = array(
-            'mtfilename'                                       => 'EE_Newsletter_message_type.class.php',
-            'autoloadpaths'                                    => array(
-                EE_CAF_LIBRARIES . 'messages/message_type/newsletter/',
-            ),
-            'messengers_to_activate_with'                      => array('email'),
-            'messengers_to_validate_with'                      => array('email'),
-            'messengers_supporting_default_template_pack_with' => array('email'),
-        );
-        EE_Register_Message_Type::register('newsletter', $setup_args);
-
-        // register payment reminder message type
-        $setup_args = array(
-            'mtfilename'                                       => 'EE_Payment_Reminder_message_type.class.php',
-            'autoloadpaths'                                    => array(EE_CAF_LIBRARIES . 'messages/message_type/payment_reminder/'),
-            'messengers_to_activate_with'                      => array('email'),
-            'messengers_to_validate_with'                      => array('email'),
-            'messengers_supporting_default_template_pack_with' => array('email'),
-        );
-        EE_Register_Message_Type::register('payment_reminder', $setup_args);
-
-        // register payment declined message type
-        $setup_args = array(
-            'mtfilename'                                       => 'EE_Payment_Declined_message_type.class.php',
-            'autoloadpaths'                                    => array(EE_CAF_LIBRARIES . 'messages/message_type/payment_declined/'),
-            'messengers_to_activate_with'                      => array('email'),
-            'messengers_to_validate_with'                      => array('email'),
-            'messengers_supporting_default_template_pack_with' => array('email'),
-        );
-        EE_Register_Message_Type::register('payment_declined', $setup_args);
-
-        // register registration declined message type
-        $setup_args = array(
-            'mtfilename'                                       => 'EE_Declined_Registration_message_type.class.php',
-            'autoloadpaths'                                    => array(EE_CAF_LIBRARIES . 'messages/message_type/declined_registration/'),
-            'messengers_to_activate_with'                      => array('email'),
-            'messengers_to_validate_with'                      => array('email'),
-            'messengers_supporting_default_template_pack_with' => array('email'),
-        );
-        EE_Register_Message_Type::register('declined_registration', $setup_args);
-
-        // register registration cancelled message type
-        $setup_args = array(
-            'mtfilename'                                       => 'EE_Cancelled_Registration_message_type.class.php',
-            'autoloadpaths'                                    => array(EE_CAF_LIBRARIES . 'messages/message_type/cancelled_registration/'),
-            'messengers_to_activate_with'                      => array('email'),
-            'messengers_to_validate_with'                      => array('email'),
-            'messengers_supporting_default_template_pack_with' => array('email'),
-        );
-        EE_Register_Message_Type::register('cancelled_registration', $setup_args);
-
-
-        // register payment failed message type
-        $setup_args = array(
-            'mtfilename'                                       => 'EE_Payment_Failed_message_type.class.php',
-            'autoloadpaths'                                    => array(EE_CAF_LIBRARIES . 'messages/message_type/payment_failed/'),
-            'messengers_to_activate_with'                      => array('email'),
-            'messengers_to_validate_with'                      => array('email'),
-            'messengers_supporting_default_template_pack_with' => array('email'),
-        );
-        EE_Register_Message_Type::register('payment_failed', $setup_args);
-
-        // register payment declined message type
-        $setup_args = array(
-            'mtfilename'                                       => 'EE_Payment_Cancelled_message_type.class.php',
-            'autoloadpaths'                                    => array(EE_CAF_LIBRARIES . 'messages/message_type/payment_cancelled/'),
-            'messengers_to_activate_with'                      => array('email'),
-            'messengers_to_validate_with'                      => array('email'),
-            'messengers_supporting_default_template_pack_with' => array('email'),
-        );
-        EE_Register_Message_Type::register('payment_cancelled', $setup_args);
-    }
-
-
-    /**
-     * Takes care of registering the  shortcode libraries implemented with caffeinated EE and set up related items.
-     *
-     * @since   4.3.2
-     *
-     * @return void
-     */
-    public function register_caf_shortcodes()
-    {
-        $setup_args = array(
-            'autoloadpaths'                 => array(
-                EE_CAF_LIBRARIES . 'shortcodes/',
-            ),
-            'msgr_validator_callback'       => array('EE_Newsletter_Shortcodes', 'messenger_validator_config'),
-            'msgr_template_fields_callback' => array('EE_Newsletter_Shortcodes', 'messenger_template_fields'),
-            'list_type_shortcodes'          => array('[NEWSLETTER_CONTENT]'),
-        );
-        EE_Register_Messages_Shortcode_Library::register('newsletter', $setup_args);
-    }
-
-
-    /**
-     * Parses a question list shortcode using given data and template
-     *
-     * @param \EE_Shortcodes $shortcode_parser
-     * @param EE_Question[]  $questions        An array of questions indexed by answer id.
-     * @param EE_Answer[]    $answers          An array of answer objects
-     * @param string         $template         Template content to be parsed.
-     * @param array          $valid_shortcodes Valid shortcodes for the template being parsed.
-     * @param array          $extra_data       Extra data that might be used when parsing the template.
-     */
-    protected function _parse_question_list_for_primary_or_recipient_registration(
-        $shortcode_parser,
-        $questions,
-        $answers,
-        $template,
-        $valid_shortcodes,
-        $extra_data
-    ) {
-        $question_list = '';
-        /** @var EEH_Parse_Shortcodes $shortcode_helper */
-        $shortcode_helper = $shortcode_parser->get_shortcode_helper();
-        foreach ($answers as $answer) {
-            if ($answer instanceof EE_Answer) {
-                // first see if the question is in our $questions array. If not then try to get from answer object.
-                $question = isset($questions[ $answer->ID() ]) ? $questions[ $answer->ID() ] : null;
-                $question = ! $question instanceof EE_Question ? $answer->question() : $question;
-                if (
-                    ! $question instanceof EE_Question
-                    || (
-                        $question instanceof EE_Question
-                        && $question->admin_only()
-                    )
-                ) {
-                    continue;
-                }
-                $question_list .= $shortcode_helper->parse_question_list_template(
-                    $template,
-                    $answer,
-                    $valid_shortcodes,
-                    $extra_data
-                );
-            }
-        }
-        return $question_list;
-    }
+	/**
+	 * constructor.
+	 */
+	public function __construct()
+	{
+		$this->_caf_hooks();
+	}
+
+
+	/**
+	 * Contains all the hooks filters for setting up caffeinated messages functionality.
+	 *
+	 * @since 4.3.2
+	 *
+	 * @return void
+	 */
+	private function _caf_hooks()
+	{
+		add_filter('FHEE__EED_Messages___set_messages_paths___MSG_PATHS', array($this, 'messages_autoload_paths'), 5);
+		add_filter(
+			'FHEE__EE_Email_messenger__get_validator_config',
+			array($this, 'email_messenger_validator_config'),
+			5,
+			2
+		);
+		add_filter(
+			'FHEE__EE_Email_messenger__get_template_fields',
+			array($this, 'email_messenger_template_fields'),
+			5,
+			2
+		);
+		add_filter(
+			'FHEE__EE_Html_messenger__get_template_fields',
+			array($this, 'html_messenger_template_fields'),
+			5,
+			2
+		);
+		add_filter(
+			'FHEE__EE_Html_messenger__get_validator_config',
+			array($this, 'html_messenger_validator_config'),
+			5,
+			2
+		);
+		add_filter('FHEE__EE_Pdf_messenger__get_template_fields', array($this, 'pdf_messenger_template_fields'), 5, 2);
+		add_filter(
+			'FHEE__EE_Pdf_messenger__get_validator_config',
+			array($this, 'pdf_messenger_validator_config'),
+			5,
+			2
+		);
+		add_filter(
+			'FHEE__EE_Messages_Template_Pack__get_specific_template__contents',
+			array($this, 'new_default_templates'),
+			5,
+			7
+		);
+		add_filter(
+			'FHEE__EE_Messages_Base__get_valid_shortcodes',
+			array($this, 'message_types_valid_shortcodes'),
+			5,
+			2
+		);
+
+		// shortcode parsers
+		add_filter('FHEE__EE_Attendee_Shortcodes__shortcodes', array($this, 'additional_attendee_shortcodes'), 5, 2);
+		add_filter('FHEE__EE_Attendee_Shortcodes__parser_after', array($this, 'additional_attendee_parser'), 5, 5);
+		add_filter(
+			'FHEE__EE_Recipient_List_Shortcodes__shortcodes',
+			array($this, 'additional_recipient_details_shortcodes'),
+			5,
+			2
+		);
+		add_filter(
+			'FHEE__EE_Recipient_List_Shortcodes__parser_after',
+			array($this, 'additional_recipient_details_parser'),
+			5,
+			5
+		);
+		add_filter(
+			'FHEE__EE_Primary_Registration_List_Shortcodes__shortcodes',
+			array($this, 'additional_primary_registration_details_shortcodes'),
+			5,
+			2
+		);
+		add_filter(
+			'FHEE__EE_Primary_Registration_List_Shortcodes__parser_after',
+			array($this, 'additional_primary_registration_details_parser'),
+			5,
+			5
+		);
+
+		/**
+		 * @since 4.2.0
+		 */
+		add_filter('FHEE__EE_Datetime_Shortcodes__shortcodes', array($this, 'additional_datetime_shortcodes'), 10, 2);
+		add_filter('FHEE__EE_Datetime_Shortcodes__parser_after', array($this, 'additional_datetime_parser'), 10, 5);
+
+		/**
+		 * @since 4.3.0
+		 */
+		// eat our own dog food!
+		add_action('EE_Brewing_Regular___messages_caf', array($this, 'register_caf_message_types'));
+		add_action('EE_Brewing_Regular___messages_caf', array($this, 'register_caf_shortcodes'));
+		do_action('EE_Brewing_Regular___messages_caf');
+	}
+
+
+	/**
+	 * This just allows us to add additional paths to the autoloader (EED_Messages::autoload_messages()) for the
+	 * messages system.
+	 *
+	 * @param  array $dir_ref original array of paths
+	 *
+	 * @return array           appended paths
+	 */
+	public function messages_autoload_paths($dir_ref)
+	{
+		$dir_ref[] = EE_CAF_LIBRARIES . 'shortcodes/';
+
+		return $dir_ref;
+	}
+
+
+	public function email_messenger_validator_config($validator_config, EE_Email_messenger $messenger)
+	{
+		$validator_config['attendee_list'] = array(
+			'shortcodes' => array('attendee', 'event_list', 'ticket_list', 'question_list'),
+			'required'   => array('[ATTENDEE_LIST]'),
+		);
+		$validator_config['question_list'] = array(
+			'shortcodes' => array('question'),
+			'required'   => array('[QUESTION_LIST]'),
+		);
+
+		return $validator_config;
+	}
+
+
+	public function html_messenger_validator_config($validator_config, EE_Html_messenger $messenger)
+	{
+		$validator_config['attendee_list'] = array(
+			'shortcodes' => array('attendee', 'question_list'),
+			'required'   => array('[ATTENDEE_LIST]'),
+		);
+		$validator_config['question_list'] = array(
+			'shortcodes' => array('question'),
+			'required'   => array('[QUESTION_LIST]'),
+		);
+
+		return $validator_config;
+	}
+
+
+	public function pdf_messenger_validator_config($validator_config, EE_Pdf_messenger $messenger)
+	{
+		$validator_config['attendee_list'] = array(
+			'shortcodes' => array('attendee', 'event_list', 'ticket_list', 'question_list'),
+			'required'   => array('[ATTENDEE_LIST]'),
+		);
+		$validator_config['question_list'] = array(
+			'shortcodes' => array('question'),
+			'required'   => array('[QUESTION_LIST]'),
+		);
+
+		return $validator_config;
+	}
+
+
+	public function email_messenger_template_fields($template_fields, EE_Email_messenger $messenger)
+	{
+		$template_fields['extra']['content']['question_list'] = array(
+			'input'               => 'textarea',
+			'label'               => '[QUESTION_LIST]',
+			'type'                => 'string',
+			'required'            => false,
+			'validation'          => true,
+			'format'              => '%s',
+			'css_class'           => 'large-text',
+			'rows'                => '5',
+			'shortcodes_required' => array('[QUESTION_LIST]'),
+		);
+
+		return $template_fields;
+	}
+
+
+	public function html_messenger_template_fields($template_fields, EE_Html_messenger $messenger)
+	{
+		$template_fields['extra']['content']['question_list'] = array(
+			'input'               => 'textarea',
+			'label'               => '[QUESTION_LIST]',
+			'type'                => 'string',
+			'required'            => false,
+			'validation'          => true,
+			'format'              => '%s',
+			'css_class'           => 'large-text',
+			'rows'                => '5',
+			'shortcodes_required' => array('[QUESTION_LIST]'),
+		);
+
+		return $template_fields;
+	}
+
+
+	public function pdf_messenger_template_fields($template_fields, EE_Pdf_messenger $messenger)
+	{
+		$template_fields['extra']['content']['question_list'] = array(
+			'input'               => 'textarea',
+			'label'               => '[QUESTION_LIST]',
+			'type'                => 'string',
+			'required'            => false,
+			'validation'          => true,
+			'format'              => '%s',
+			'css_class'           => 'large-text',
+			'rows'                => '5',
+			'shortcodes_required' => array('[QUESTION_LIST]'),
+		);
+
+		return $template_fields;
+	}
+
+
+	public function new_default_templates(
+		$contents,
+		$actual_path,
+		EE_messenger $messenger,
+		EE_message_type $message_type,
+		$field,
+		$context,
+		EE_Messages_Template_Pack $template_pack
+	) {
+
+		// we're only modifying templates for the default template pack
+		if (! $template_pack instanceof EE_Messages_Template_Pack_Default) {
+			return $contents;
+		}
+
+		// the template file name we're replacing contents for.
+		$template_file_prefix = $field . '_' . $context;
+		$msg_prefix = $messenger->name . '_' . $message_type->name . '_';
+
+		$base_path = EE_CAF_LIBRARIES . 'messages/defaults/default/';
+
+		if ($messenger->name == 'email' && $message_type->name == 'registration') {
+			switch ($template_file_prefix) {
+				case 'question_list_admin':
+				case 'question_list_attendee':
+				case 'question_list_primary_attendee':
+					$path = $base_path . $msg_prefix . 'question_list.template.php';
+					$contents = EEH_Template::display_template($path, array(), true);
+					break;
+
+				case 'attendee_list_primary_attendee':
+					$path = $base_path . $msg_prefix . 'attendee_list.template.php';
+					$contents = EEH_Template::display_template($path, array(), true);
+					break;
+
+				case 'attendee_list_admin':
+					$path = $base_path . $msg_prefix . 'attendee_list_admin.template.php';
+					$contents = EEH_Template::display_template(
+						$path,
+						array(),
+						true
+					);
+					break;
+
+				case 'attendee_list_attendee':
+					$contents = '';
+					break;
+
+				case 'event_list_attendee':
+					$path = $base_path . $msg_prefix . 'event_list_attendee.template.php';
+					$contents = EEH_Template::display_template($path, array(), true);
+					break;
+			}
+		} elseif ($messenger->name == 'email' && $message_type->name == 'newsletter') {
+			switch ($template_file_prefix) {
+				case 'content_attendee':
+					$path = $base_path . $msg_prefix . 'content.template.php';
+					$contents = EEH_Template::display_template($path, array(), true);
+					break;
+
+				case 'newsletter_content_attendee':
+					$path = $base_path . $msg_prefix . 'newsletter_content.template.php';
+					$contents = EEH_Template::display_template($path, array(), true);
+					break;
+
+				case 'newsletter_subject_attendee':
+					$path = $base_path . $msg_prefix . 'subject.template.php';
+					$contents = EEH_Template::display_template($path, array(), true);
+					break;
+			}
+		} elseif ($messenger->name == 'html' && $message_type->name == 'receipt') {
+			switch ($template_file_prefix) {
+				case 'attendee_list_purchaser':
+					$path = $base_path . $msg_prefix . 'attendee_list.template.php';
+					$contents = EEH_Template::display_template($path, array(), true);
+					break;
+			}
+		}
+
+		return $contents;
+	}
+
+
+	public function message_types_valid_shortcodes($valid_shortcodes, EE_Messages_Base $msg)
+	{
+		// make sure question_list and question are ONLY added for the core message types.  Any other message types will have to explicitly set question_list as a valid shortcode.
+		$include_with = array(
+			'registration',
+			'cancelled_registration',
+			'declined_registration',
+			'not_approved_registration',
+			'payment_declined',
+			'payment_failed',
+			'payment_cancelled',
+			'payment',
+			'payment_reminder',
+			'pending_approval',
+			'registration_summary',
+			'invoice',
+			'receipt',
+		);
+		if ($msg instanceof EE_message_type && in_array($msg->name, $include_with)) {
+			$contexts = array_keys($msg->get_contexts());
+			foreach ($contexts as $context) {
+				$valid_shortcodes[ $context ][] = 'question_list';
+				$valid_shortcodes[ $context ][] = 'question';
+			}
+		}
+
+		return $valid_shortcodes;
+	}
+
+
+	public function additional_attendee_shortcodes($shortcodes, $shortcode_parser)
+	{
+		$shortcodes['[ANSWER_*]'] = esc_html__(
+			'This is a special dynamic shortcode. Right after the "*", add the exact text of a existing question, and if there is an answer for that question for this registrant, that will take the place of this shortcode.',
+			'event_espresso'
+		);
+
+		return $shortcodes;
+	}
+
+
+	public function additional_attendee_parser($parsed, $shortcode, $data, $extra_data, $shortcode_parser)
+	{
+
+		if (
+			strpos($shortcode, '[ANSWER_*') === false
+			|| ! isset($extra_data['data']->questions)
+			|| ! isset($extra_data['data']->registrations)
+		) {
+			return $parsed;
+		}
+
+		// let's get the question from the code.
+		$shortcode = str_replace('[ANSWER_*', '', $shortcode);
+		$shortcode = trim(str_replace(']', '', $shortcode));
+
+		$registration = $data instanceof EE_Registration ? $data : null;
+		$registration = ! $registration instanceof EE_Registration && is_array(
+			$extra_data
+		) && isset($extra_data['data']) && $extra_data['data'] instanceof EE_Registration ? $extra_data['data'] : $registration;
+
+		$aee = $data instanceof EE_Messages_Addressee ? $data : null;
+		$aee = ! $aee instanceof EE_Messages_Addressee && is_array(
+			$extra_data
+		) && isset($extra_data['data']) ? $extra_data['data'] : $aee;
+
+		if (! $registration instanceof EE_Registration || ! $aee instanceof EE_Messages_Addressee) {
+			return $parsed;
+		}
+
+		// now let's figure out which question has this text.
+		foreach ($aee->questions as $ansid => $question) {
+			if (
+				$question instanceof EE_Question
+				&& trim($question->display_text()) == trim($shortcode)
+				&& isset($aee->registrations[ $registration->ID() ]['ans_objs'][ $ansid ])
+			) {
+				return $aee->registrations[ $registration->ID() ]['ans_objs'][ $ansid ]->get_pretty(
+					'ANS_value',
+					'no_wpautop'
+				);
+			}
+		}
+
+		// nothing!
+		return $parsed;
+	}
+
+
+	/**
+	 * Callback for additional shortcodes filter for adding additional datetime shortcodes.
+	 *
+	 * @since  4.2
+	 *
+	 * @param  array                  $shortcodes         array of shortcodes and
+	 *                                                    descriptions
+	 * @param  EE_Datetime_Shortcodes $shortcode_parser   EE_Shortcodes object
+	 *
+	 * @return array                                        array of shortcodes and
+	 *                                                        descriptions
+	 */
+	public function additional_datetime_shortcodes($shortcodes, $shortcode_parser)
+	{
+		$shortcodes['[DTT_NAME]'] = esc_html__(
+			'This will be parsed to the Title given for a Datetime',
+			'event_espresso'
+		);
+		$shortcodes['[DTT_DESCRIPTION]'] = esc_html__(
+			'This will be parsed to the description for a Datetime',
+			'event_espresso'
+		);
+		$shortcodes['[DTT_NAME_OR_DATES]'] = esc_html__(
+			'When parsed, if the Datetime has a name, it is used, otherwise a formatted string including the start date and end date will be used.',
+			'event_espresso'
+		);
+
+		return $shortcodes;
+	}
+
+
+	/**
+	 * Callback for additional shortcodes parser filter used for adding parser for new
+	 * Datetime shortcodes
+	 *
+	 * @since  4.2
+	 *
+	 * @param  string                 $parsed     The finished parsed string for the given shortcode.
+	 * @param  string                 $shortcode  The shortcode being parsed.
+	 * @param  object                 $data       The incoming data object for the Shortcode Parser.
+	 * @param  object                 $extra_data The incoming extra date object for the Shortcode
+	 *                                            Parser.
+	 * @param  EE_Datetime_Shortcodes $shortcode_parser
+	 *
+	 * @return string                   The new parsed string.
+	 */
+	public function additional_datetime_parser($parsed, $shortcode, $data, $extra_data, $shortcode_parser)
+	{
+
+		if (! $data instanceof EE_Datetime) {
+			return ''; // get out because we can only parse with the datetime object.
+		}
+
+		switch ($shortcode) {
+			case '[DTT_NAME]':
+				return $data->name();
+				break;
+			case '[DTT_DESCRIPTION]':
+				return $data->description();
+				break;
+			case '[DTT_NAME_OR_DATES]':
+				return $data->get_dtt_display_name(true);
+				break;
+			default:
+				return $parsed;
+				break;
+		}
+	}
+
+
+	public function additional_recipient_details_shortcodes($shortcodes, $shortcode_parser)
+	{
+		$shortcodes['[RECIPIENT_QUESTION_LIST]'] = esc_html__(
+			'This is used to indicate where you want the list of questions and answers to show for the person receiving the message.',
+			'event_espresso'
+		);
+
+		return $shortcodes;
+	}
+
+
+	/**
+	 * Callback for FHEE__EE_Recipient_List_Shortcodes__parser_after filter (dynamic filter).
+	 *
+	 * @param string         $parsed           The original parsed content for the shortcode
+	 * @param string         $shortcode        The shortcode being parsed
+	 * @param array          $data             The shortcode parser data array
+	 * @param array          $extra_data       The shortcode parser extra data array
+	 * @param \EE_Shortcodes $shortcode_parser Shortcode parser.
+	 *
+	 * @return string
+	 */
+	public function additional_recipient_details_parser($parsed, $shortcode, $data, $extra_data, $shortcode_parser)
+	{
+
+		if (array($data) && ! isset($data['data'])) {
+			return $parsed;
+		}
+
+		$recipient = $data['data'] instanceof EE_Messages_Addressee ? $data['data'] : null;
+		$recipient = ! $recipient instanceof EE_Messages_Addressee && array($extra_data) && isset($extra_data['data']) && $extra_data['data'] instanceof EE_Messages_Addressee ? $extra_data['data'] : $recipient;
+
+		if (! $recipient instanceof EE_Messages_Addressee) {
+			return $parsed;
+		}
+
+		switch ($shortcode) {
+			case '[RECIPIENT_QUESTION_LIST]':
+				$att = $recipient->att_obj;
+				$registrations_on_attendee = $att instanceof EE_Attendee
+					? $recipient->attendees[ $att->ID() ]['reg_objs']
+					: array();
+				$registrations_on_attendee = empty($registrations_on_attendee) && $recipient->reg_obj instanceof EE_Registration ? array($recipient->reg_obj) : $registrations_on_attendee;
+				$answers = array();
+
+				$template = is_array($data['template']) && isset($data['template']['question_list'])
+					? $data['template']['question_list']
+					: $extra_data['template']['question_list'];
+				$valid_shortcodes = array('question');
+
+				// if the context is main_content then get all answers for all registrations on this attendee
+				if ($data['data'] instanceof EE_Messages_Addressee) {
+					foreach ($registrations_on_attendee as $reg) {
+						if ($reg instanceof EE_Registration) {
+							$anss = ! empty($recipient->registrations[ $reg->ID() ]['ans_objs'])
+								? $recipient->registrations[ $reg->ID() ]['ans_objs']
+								: array();
+							foreach ($anss as $ans) {
+								if ($ans instanceof EE_Answer) {
+									$answers[ $ans->ID() ] = $ans;
+								}
+							}
+						}
+					}
+				}
+
+				// if the context is the event list parser, then let's return just the answers for all registrations attached to the recipient for that event.
+				if ($data['data'] instanceof EE_Event) {
+					$event = $data['data'];
+					foreach ($registrations_on_attendee as $reg) {
+						if ($reg instanceof EE_Registration && $reg->event_ID() == $event->ID()) {
+							$anss = ! empty($recipient->registrations[ $reg->ID() ]['ans_objs'])
+								? $recipient->registrations[ $reg->ID() ]['ans_objs']
+								: array();
+							foreach ($anss as $ans) {
+								if ($ans instanceof EE_Answer) {
+									$answers[ $ans->ID() ] = $ans;
+								}
+							}
+						}
+					}
+				}
+
+				$questions = $questions = isset($recipient->questions) ? $recipient->questions : array();
+
+				// if $extra_data does not have a 'data' key then let's make sure we add it and set the EE_Messages_Addressee
+				// object on it.
+				if (! isset($extra_data['data'])) {
+					$extra_data['data'] = $recipient;
+				}
+
+				return $this->_parse_question_list_for_primary_or_recipient_registration(
+					$shortcode_parser,
+					$questions,
+					$answers,
+					$template,
+					$valid_shortcodes,
+					$extra_data
+				);
+				break;
+
+			default:
+				return $parsed;
+				break;
+		}
+	}
+
+
+	public function additional_primary_registration_details_shortcodes($shortcodes, $shortcode_parser)
+	{
+		$shortcodes['[PRIMARY_REGISTRANT_QUESTION_LIST]'] = esc_html__(
+			'This is used to indicate the questions and answers for the primary_registrant. It should be placed in the "[attendee_list]" field',
+			'event_espresso'
+		);
+
+		return $shortcodes;
+	}
+
+
+	/**
+	 * Callback for FHEE__EE_Primary_Registration_List_Shortcodes__parser_after filter (dynamic filter).
+	 *
+	 * @param string         $parsed           The original parsed content for the shortcode
+	 * @param string         $shortcode        The shortcode being parsed
+	 * @param array          $data             The shortcode parser data array
+	 * @param array          $extra_data       The shortcode parser extra data array
+	 * @param \EE_Shortcodes $shortcode_parser Shortcode parser.
+	 *
+	 * @return string
+	 */
+	public function additional_primary_registration_details_parser(
+		$parsed,
+		$shortcode,
+		$data,
+		$extra_data,
+		$shortcode_parser
+	) {
+		if (array($data) && ! isset($data['data'])) {
+			return $parsed;
+		}
+
+		$recipient = $data['data'] instanceof EE_Messages_Addressee ? $data['data'] : null;
+		$recipient = ! $recipient instanceof EE_Messages_Addressee && array($extra_data) && isset($extra_data['data']) && $extra_data['data'] instanceof EE_Messages_Addressee ? $extra_data['data'] : $recipient;
+
+		if (! $recipient instanceof EE_Messages_Addressee) {
+			return $parsed;
+		}
+
+		switch ($shortcode) {
+			case '[PRIMARY_REGISTRANT_QUESTION_LIST]':
+				if (! $recipient->primary_att_obj instanceof EE_Attendee || ! $recipient->primary_reg_obj instanceof EE_Registration) {
+					return '';
+				}
+				$registration = $recipient->primary_reg_obj;
+				$answers = isset($recipient->registrations[ $registration->ID() ]['ans_objs'])
+					? $recipient->registrations[ $registration->ID() ]['ans_objs']
+					: array();
+				if (empty($answers)) {
+					return '';
+				}
+				$template = is_array($data['template']) && isset($data['template']['question_list'])
+					? $data['template']['question_list']
+					: $extra_data['template']['question_list'];
+				$valid_shortcodes = array('question');
+				$answers = $recipient->registrations[ $registration->ID() ]['ans_objs'];
+				$questions = isset($recipient->questions) ? $recipient->questions : array();
+				// if $extra_data does not have a 'data' key then let's make sure we add it and set the EE_Messages_Addressee
+				// object on it.
+				if (! isset($extra_data['data'])) {
+					$extra_data['data'] = $recipient;
+				}
+				return $this->_parse_question_list_for_primary_or_recipient_registration(
+					$shortcode_parser,
+					$questions,
+					$answers,
+					$template,
+					$valid_shortcodes,
+					$extra_data
+				);
+				break;
+
+			default:
+				return $parsed;
+				break;
+		}
+	}
+
+
+	/**
+	 * Takes care of registering the  message types that are only available in caffeinated EE.
+	 *
+	 * @since   4.3.2
+	 *
+	 * @return  void
+	 */
+	public function register_caf_message_types()
+	{
+		// register newsletter message type
+		$setup_args = array(
+			'mtfilename'                                       => 'EE_Newsletter_message_type.class.php',
+			'autoloadpaths'                                    => array(
+				EE_CAF_LIBRARIES . 'messages/message_type/newsletter/',
+			),
+			'messengers_to_activate_with'                      => array('email'),
+			'messengers_to_validate_with'                      => array('email'),
+			'messengers_supporting_default_template_pack_with' => array('email'),
+		);
+		EE_Register_Message_Type::register('newsletter', $setup_args);
+
+		// register payment reminder message type
+		$setup_args = array(
+			'mtfilename'                                       => 'EE_Payment_Reminder_message_type.class.php',
+			'autoloadpaths'                                    => array(EE_CAF_LIBRARIES . 'messages/message_type/payment_reminder/'),
+			'messengers_to_activate_with'                      => array('email'),
+			'messengers_to_validate_with'                      => array('email'),
+			'messengers_supporting_default_template_pack_with' => array('email'),
+		);
+		EE_Register_Message_Type::register('payment_reminder', $setup_args);
+
+		// register payment declined message type
+		$setup_args = array(
+			'mtfilename'                                       => 'EE_Payment_Declined_message_type.class.php',
+			'autoloadpaths'                                    => array(EE_CAF_LIBRARIES . 'messages/message_type/payment_declined/'),
+			'messengers_to_activate_with'                      => array('email'),
+			'messengers_to_validate_with'                      => array('email'),
+			'messengers_supporting_default_template_pack_with' => array('email'),
+		);
+		EE_Register_Message_Type::register('payment_declined', $setup_args);
+
+		// register registration declined message type
+		$setup_args = array(
+			'mtfilename'                                       => 'EE_Declined_Registration_message_type.class.php',
+			'autoloadpaths'                                    => array(EE_CAF_LIBRARIES . 'messages/message_type/declined_registration/'),
+			'messengers_to_activate_with'                      => array('email'),
+			'messengers_to_validate_with'                      => array('email'),
+			'messengers_supporting_default_template_pack_with' => array('email'),
+		);
+		EE_Register_Message_Type::register('declined_registration', $setup_args);
+
+		// register registration cancelled message type
+		$setup_args = array(
+			'mtfilename'                                       => 'EE_Cancelled_Registration_message_type.class.php',
+			'autoloadpaths'                                    => array(EE_CAF_LIBRARIES . 'messages/message_type/cancelled_registration/'),
+			'messengers_to_activate_with'                      => array('email'),
+			'messengers_to_validate_with'                      => array('email'),
+			'messengers_supporting_default_template_pack_with' => array('email'),
+		);
+		EE_Register_Message_Type::register('cancelled_registration', $setup_args);
+
+
+		// register payment failed message type
+		$setup_args = array(
+			'mtfilename'                                       => 'EE_Payment_Failed_message_type.class.php',
+			'autoloadpaths'                                    => array(EE_CAF_LIBRARIES . 'messages/message_type/payment_failed/'),
+			'messengers_to_activate_with'                      => array('email'),
+			'messengers_to_validate_with'                      => array('email'),
+			'messengers_supporting_default_template_pack_with' => array('email'),
+		);
+		EE_Register_Message_Type::register('payment_failed', $setup_args);
+
+		// register payment declined message type
+		$setup_args = array(
+			'mtfilename'                                       => 'EE_Payment_Cancelled_message_type.class.php',
+			'autoloadpaths'                                    => array(EE_CAF_LIBRARIES . 'messages/message_type/payment_cancelled/'),
+			'messengers_to_activate_with'                      => array('email'),
+			'messengers_to_validate_with'                      => array('email'),
+			'messengers_supporting_default_template_pack_with' => array('email'),
+		);
+		EE_Register_Message_Type::register('payment_cancelled', $setup_args);
+	}
+
+
+	/**
+	 * Takes care of registering the  shortcode libraries implemented with caffeinated EE and set up related items.
+	 *
+	 * @since   4.3.2
+	 *
+	 * @return void
+	 */
+	public function register_caf_shortcodes()
+	{
+		$setup_args = array(
+			'autoloadpaths'                 => array(
+				EE_CAF_LIBRARIES . 'shortcodes/',
+			),
+			'msgr_validator_callback'       => array('EE_Newsletter_Shortcodes', 'messenger_validator_config'),
+			'msgr_template_fields_callback' => array('EE_Newsletter_Shortcodes', 'messenger_template_fields'),
+			'list_type_shortcodes'          => array('[NEWSLETTER_CONTENT]'),
+		);
+		EE_Register_Messages_Shortcode_Library::register('newsletter', $setup_args);
+	}
+
+
+	/**
+	 * Parses a question list shortcode using given data and template
+	 *
+	 * @param \EE_Shortcodes $shortcode_parser
+	 * @param EE_Question[]  $questions        An array of questions indexed by answer id.
+	 * @param EE_Answer[]    $answers          An array of answer objects
+	 * @param string         $template         Template content to be parsed.
+	 * @param array          $valid_shortcodes Valid shortcodes for the template being parsed.
+	 * @param array          $extra_data       Extra data that might be used when parsing the template.
+	 */
+	protected function _parse_question_list_for_primary_or_recipient_registration(
+		$shortcode_parser,
+		$questions,
+		$answers,
+		$template,
+		$valid_shortcodes,
+		$extra_data
+	) {
+		$question_list = '';
+		/** @var EEH_Parse_Shortcodes $shortcode_helper */
+		$shortcode_helper = $shortcode_parser->get_shortcode_helper();
+		foreach ($answers as $answer) {
+			if ($answer instanceof EE_Answer) {
+				// first see if the question is in our $questions array. If not then try to get from answer object.
+				$question = isset($questions[ $answer->ID() ]) ? $questions[ $answer->ID() ] : null;
+				$question = ! $question instanceof EE_Question ? $answer->question() : $question;
+				if (
+					! $question instanceof EE_Question
+					|| (
+						$question instanceof EE_Question
+						&& $question->admin_only()
+					)
+				) {
+					continue;
+				}
+				$question_list .= $shortcode_helper->parse_question_list_template(
+					$template,
+					$answer,
+					$valid_shortcodes,
+					$extra_data
+				);
+			}
+		}
+		return $question_list;
+	}
 }

core/libraries/messages/messenger/EE_Html_messenger.class.php

Indentation +545 added lines, -545 removed lines

@@ -12,549 +12,549 @@
  */
 class EE_Html_messenger extends EE_messenger
 {
-    /**
-     * The following are the properties that this messenger requires for displaying the html
-     */
-    /**
-     * This is the html body generated by the template via the message type.
-     *
-     * @var string
-     */
-    protected $_content = '';
-
-    /**
-     * This is for the page title that gets displayed.  (Why use "subject"?  Because the "title" tag in html is
-     * equivalent to the "subject" of the page.
-     *
-     * @var string
-     */
-    protected $_subject = '';
-
-
-    /**
-     * EE_Html_messenger constructor.
-     */
-    public function __construct()
-    {
-        // set properties
-        $this->name                = 'html';
-        $this->description         = esc_html__(
-            'This messenger outputs a message to a browser for display.',
-            'event_espresso'
-        );
-        $this->label               = [
-            'singular' => esc_html__('html', 'event_espresso'),
-            'plural'   => esc_html__('html', 'event_espresso'),
-        ];
-        $this->activate_on_install = true;
-        // add the "powered by EE" credit link to the HTML receipt and invoice
-        add_filter(
-            'FHEE__EE_Html_messenger___send_message__main_body',
-            [$this, 'add_powered_by_credit_link_to_receipt_and_invoice'],
-            10,
-            3
-        );
-        parent::__construct();
-    }
-
-
-    /**
-     * HTML Messenger desires execution immediately.
-     *
-     * @return bool
-     * @since  4.9.0
-     * @see    parent::send_now() for documentation.
-     */
-    public function send_now(): bool
-    {
-        return true;
-    }
-
-
-    /**
-     * HTML Messenger allows an empty to field.
-     *
-     * @return bool
-     * @since  4.9.0
-     * @see    parent::allow_empty_to_field() for documentation
-     */
-    public function allow_empty_to_field(): bool
-    {
-        return true;
-    }
-
-
-    /**
-     * @see abstract declaration in EE_messenger for details.
-     */
-    protected function _set_admin_pages()
-    {
-        $this->admin_registered_pages = ['events_edit' => true];
-    }
-
-
-    /**
-     * @see abstract declaration in EE_messenger for details.
-     */
-    protected function _set_valid_shortcodes()
-    {
-        $this->_valid_shortcodes = [];
-    }
-
-
-    /**
-     * @see abstract declaration in EE_messenger for details.
-     */
-    protected function _set_validator_config()
-    {
-        $this->_validator_config = [
-            'subject'                       => [
-                'shortcodes' => ['organization', 'primary_registration_details', 'email', 'transaction'],
-            ],
-            'content'                       => [
-                'shortcodes' => [
-                    'organization',
-                    'primary_registration_list',
-                    'primary_registration_details',
-                    'email',
-                    'transaction',
-                    'event_list',
-                    'payment_list',
-                    'venue',
-                    'line_item_list',
-                    'messenger',
-                    'ticket_list',
-                ],
-            ],
-            'event_list'                    => [
-                'shortcodes' => [
-                    'event',
-                    'ticket_list',
-                    'venue',
-                    'primary_registration_details',
-                    'primary_registration_list',
-                    'event_author',
-                ],
-                'required'   => ['[EVENT_LIST]'],
-            ],
-            'ticket_list'                   => [
-                'shortcodes' => [
-                    'attendee_list',
-                    'ticket',
-                    'datetime_list',
-                    'primary_registration_details',
-                    'line_item_list',
-                    'venue',
-                ],
-                'required'   => ['[TICKET_LIST]'],
-            ],
-            'ticket_line_item_no_pms'       => [
-                'shortcodes' => ['line_item', 'ticket'],
-                'required'   => ['[TICKET_LINE_ITEM_LIST]'],
-            ],
-            'ticket_line_item_pms'          => [
-                'shortcodes' => ['line_item', 'ticket', 'line_item_list'],
-                'required'   => ['[TICKET_LINE_ITEM_LIST]'],
-            ],
-            'price_modifier_line_item_list' => [
-                'shortcodes' => ['line_item'],
-                'required'   => ['[PRICE_MODIFIER_LINE_ITEM_LIST]'],
-            ],
-            'datetime_list'                 => [
-                'shortcodes' => ['datetime'],
-                'required'   => ['[DATETIME_LIST]'],
-            ],
-            'attendee_list'                 => [
-                'shortcodes' => ['attendee'],
-                'required'   => ['[ATTENDEE_LIST]'],
-            ],
-            'tax_line_item_list'            => [
-                'shortcodes' => ['line_item'],
-                'required'   => ['[TAX_LINE_ITEM_LIST]'],
-            ],
-            'additional_line_item_list'     => [
-                'shortcodes' => ['line_item'],
-                'required'   => ['[ADDITIONAL_LINE_ITEM_LIST]'],
-            ],
-            'payment_list'                  => [
-                'shortcodes' => ['payment'],
-                'required'   => ['[PAYMENT_LIST_*]'],
-            ],
-        ];
-    }
-
-
-    /**
-     * This is a method called from EE_messages when this messenger is a generating messenger and the sending messenger
-     * is a different messenger.  Child messengers can set hooks for the sending messenger to callback on if necessary
-     * (i.e. swap out css files or something else).
-     *
-     * @param string $sending_messenger_name the name of the sending messenger so we only set the hooks needed.
-     * @return void
-     * @since 4.5.0
-     */
-    public function do_secondary_messenger_hooks($sending_messenger_name)
-    {
-        if ($sending_messenger_name === 'pdf') {
-            add_filter('EE_messenger__get_variation__variation', [$this, 'add_html_css'], 10, 8);
-        }
-    }
-
-
-    /**
-     * @param                            $variation_path
-     * @param EE_Messages_Template_Pack  $template_pack
-     * @param                            $messenger_name
-     * @param                            $message_type_name
-     * @param                            $url
-     * @param                            $type
-     * @param                            $variation
-     * @param                            $skip_filters
-     * @return string
-     */
-    public function add_html_css(
-        $variation_path,
-        EE_Messages_Template_Pack $template_pack,
-        $messenger_name,
-        $message_type_name,
-        $url,
-        $type,
-        $variation,
-        $skip_filters
-    ): string {
-        return $template_pack->get_variation(
-            $this->name,
-            $message_type_name,
-            $type,
-            $variation,
-            $url,
-            '.css',
-            $skip_filters
-        );
-    }
-
-
-    /**
-     * Takes care of enqueuing any necessary scripts or styles for the page.  A do_action() so message types using this
-     * messenger can add their own js.
-     *
-     * @return void.
-     */
-    public function enqueue_scripts_styles()
-    {
-        parent::enqueue_scripts_styles();
-        do_action('AHEE__EE_Html_messenger__enqueue_scripts_styles');
-    }
-
-
-    /**
-     * _set_template_fields
-     * This sets up the fields that a messenger requires for the message to go out.
-     *
-     * @access  protected
-     * @return void
-     */
-    protected function _set_template_fields()
-    {
-        // any extra template fields that are NOT used by the messenger
-        // but will get used by a messenger field for shortcode replacement
-        // get added to the 'extra' key in an associated array
-        // indexed by the messenger field they relate to.
-        // This is important for the Messages_admin to know what fields to display to the user.
-        // Also, notice that the "values" are equal to the field type
-        // that messages admin will use to know what kind of field to display.
-        // The values ALSO have one index labeled "shortcode".
-        // The values in that array indicate which ACTUAL SHORTCODE (i.e. [SHORTCODE])
-        // is required in order for this extra field to be displayed.
-        //  If the required shortcode isn't part of the shortcodes array
-        // then the field is not needed and will not be displayed/parsed.
-        $this->_template_fields = [
-            'subject' => [
-                'input'      => 'text',
-                'label'      => esc_html__('Page Title', 'event_espresso'),
-                'type'       => 'string',
-                'required'   => true,
-                'validation' => true,
-                'css_class'  => 'large-text',
-                'format'     => '%s',
-            ],
-            'content' => '',
-            // left empty b/c it is in the "extra array" but messenger still needs needs to know this is a field.
-            'extra'   => [
-                'content' => [
-                    'main'                          => [
-                        'input'      => 'wp_editor',
-                        'label'      => esc_html__('Main Content', 'event_espresso'),
-                        'type'       => 'string',
-                        'required'   => true,
-                        'validation' => true,
-                        'format'     => '%s',
-                        'rows'       => '15',
-                    ],
-                    'event_list'                    => [
-                        'input'               => 'wp_editor',
-                        'label'               => '[EVENT_LIST]',
-                        'type'                => 'string',
-                        'required'            => false,
-                        'validation'          => true,
-                        'format'              => '%s',
-                        'rows'                => '15',
-                        'shortcodes_required' => ['[EVENT_LIST]'],
-                    ],
-                    'ticket_list'                   => [
-                        'input'               => 'textarea',
-                        'label'               => '[TICKET_LIST]',
-                        'type'                => 'string',
-                        'required'            => false,
-                        'validation'          => true,
-                        'format'              => '%s',
-                        'css_class'           => 'large-text',
-                        'rows'                => '10',
-                        'shortcodes_required' => ['[TICKET_LIST]'],
-                    ],
-                    'ticket_line_item_no_pms'       => [
-                        'input'               => 'textarea',
-                        'label'               => '[TICKET_LINE_ITEM_LIST] <br>' . esc_html__(
-                            'Ticket Line Item List with no Price Modifiers',
-                            'event_espresso'
-                        ),
-                        'type'                => 'string',
-                        'required'            => false,
-                        'validation'          => true,
-                        'format'              => '%s',
-                        'css_class'           => 'large-text',
-                        'rows'                => '5',
-                        'shortcodes_required' => ['[TICKET_LINE_ITEM_LIST]'],
-                    ],
-                    'ticket_line_item_pms'          => [
-                        'input'               => 'textarea',
-                        'label'               => '[TICKET_LINE_ITEM_LIST] <br>' . esc_html__(
-                            'Ticket Line Item List with Price Modifiers',
-                            'event_espresso'
-                        ),
-                        'type'                => 'string',
-                        'required'            => false,
-                        'validation'          => true,
-                        'format'              => '%s',
-                        'css_class'           => 'large-text',
-                        'rows'                => '5',
-                        'shortcodes_required' => ['[TICKET_LINE_ITEM_LIST]'],
-                    ],
-                    'price_modifier_line_item_list' => [
-                        'input'               => 'textarea',
-                        'label'               => '[PRICE_MODIFIER_LINE_ITEM_LIST]',
-                        'type'                => 'string',
-                        'required'            => false,
-                        'validation'          => true,
-                        'format'              => '%s',
-                        'css_class'           => 'large-text',
-                        'rows'                => '5',
-                        'shortcodes_required' => ['[PRICE_MODIFIER_LINE_ITEM_LIST]'],
-                    ],
-                    'datetime_list'                 => [
-                        'input'               => 'textarea',
-                        'label'               => '[DATETIME_LIST]',
-                        'type'                => 'string',
-                        'required'            => false,
-                        'validation'          => true,
-                        'format'              => '%s',
-                        'css_class'           => 'large-text',
-                        'rows'                => '5',
-                        'shortcodes_required' => ['[DATETIME_LIST]'],
-                    ],
-                    'attendee_list'                 => [
-                        'input'               => 'textarea',
-                        'label'               => '[ATTENDEE_LIST]',
-                        'type'                => 'string',
-                        'required'            => false,
-                        'validation'          => true,
-                        'format'              => '%s',
-                        'css_class'           => 'large-text',
-                        'rows'                => '5',
-                        'shortcodes_required' => ['[ATTENDEE_LIST]'],
-                    ],
-                    'tax_line_item_list'            => [
-                        'input'               => 'textarea',
-                        'label'               => '[TAX_LINE_ITEM_LIST]',
-                        'type'                => 'string',
-                        'required'            => false,
-                        'validation'          => true,
-                        'format'              => '%s',
-                        'css_class'           => 'large-text',
-                        'rows'                => '5',
-                        'shortcodes_required' => ['[TAX_LINE_ITEM_LIST]'],
-                    ],
-                    'additional_line_item_list'     => [
-                        'input'               => 'textarea',
-                        'label'               => '[ADDITIONAL_LINE_ITEM_LIST]',
-                        'type'                => 'string',
-                        'required'            => false,
-                        'validation'          => true,
-                        'format'              => '%s',
-                        'css_class'           => 'large-text',
-                        'rows'                => '5',
-                        'shortcodes_required' => ['[ADDITIONAL_LINE_ITEM_LIST]'],
-                    ],
-                    'payment_list'                  => [
-                        'input'               => 'textarea',
-                        'label'               => '[PAYMENT_LIST]',
-                        'type'                => 'string',
-                        'required'            => false,
-                        'validation'          => true,
-                        'format'              => '%s',
-                        'css_class'           => 'large-text',
-                        'rows'                => '5',
-                        'shortcodes_required' => ['[PAYMENT_LIST_*]'],
-                    ],
-                ],
-            ],
-        ];
-    }
-
-
-    /**
-     * @see   definition of this method in parent
-     * @since 4.5.0
-     */
-    protected function _set_default_message_types()
-    {
-        $this->_default_message_types = ['receipt', 'invoice'];
-    }
-
-
-    /**
-     * @see   definition of this method in parent
-     * @since 4.5.0
-     */
-    protected function _set_valid_message_types()
-    {
-        $this->_valid_message_types = ['receipt', 'invoice'];
-    }
-
-
-    /**
-     * Displays the message in the browser.
-     *
-     * @return void.
-     * @since 4.5.0
-     */
-    protected function _send_message()
-    {
-        $this->_template_args = [
-            'page_title' => $this->_subject,
-            'base_css'   => $this->get_variation(
-                $this->_tmp_pack,
-                $this->_incoming_message_type->name,
-                true,
-                'base',
-                $this->_variation
-            ),
-            'print_css'  => $this->get_variation(
-                $this->_tmp_pack,
-                $this->_incoming_message_type->name,
-                true,
-                'print',
-                $this->_variation
-            ),
-            'main_css'   => $this->get_variation(
-                $this->_tmp_pack,
-                $this->_incoming_message_type->name,
-                true,
-                'main',
-                $this->_variation
-            ),
-            'main_body'  => wpautop(
-                apply_filters(
-                    'FHEE__EE_Html_messenger___send_message__main_body',
-                    $this->_content,
-                    $this->_content,
-                    $this->_incoming_message_type
-                )
-            ),
-        ];
-        $this->_deregister_wp_hooks();
-        add_action('wp_enqueue_scripts', [$this, 'enqueue_scripts_styles']);
-        echo ($this->_get_main_template());
-        exit();
-    }
-
-
-    /**
-     * The purpose of this function is to de register all actions hooked into wp_head and wp_footer so that it doesn't
-     * interfere with our templates.  If users want to add any custom styles or scripts they must use the
-     * AHEE__EE_Html_messenger__enqueue_scripts_styles hook.
-     *
-     * @return void
-     * @since 4.5.0
-     */
-    protected function _deregister_wp_hooks()
-    {
-        remove_all_actions('wp_head');
-        remove_all_actions('wp_footer');
-        remove_all_actions('wp_print_footer_scripts');
-        remove_all_actions('wp_enqueue_scripts');
-        global $wp_scripts, $wp_styles;
-        $wp_scripts = $wp_styles = [];
-        // just add back in wp_enqueue_scripts and wp_print_footer_scripts cause that's all we want to load.
-        add_action('wp_footer', 'wp_print_footer_scripts');
-        add_action('wp_print_footer_scripts', '_wp_footer_scripts');
-        add_action('wp_head', 'wp_enqueue_scripts');
-    }
-
-
-    /**
-     * Overwrite parent _get_main_template for display_html purposes.
-     *
-     * @param bool $preview
-     * @return string
-     * @since  4.5.0
-     */
-    protected function _get_main_template($preview = false): string
-    {
-        $wrapper_template = $this->_tmp_pack->get_wrapper($this->name);
-        // include message type as a template arg
-        $this->_template_args['message_type'] = $this->_incoming_message_type;
-        return EEH_Template::display_template($wrapper_template, $this->_template_args, true);
-    }
-
-
-    /**
-     * @return void
-     */
-    protected function _preview()
-    {
-        $this->_send_message();
-    }
-
-
-    protected function _set_admin_settings_fields()
-    {
-    }
-
-
-    /**
-     * add the "powered by EE" credit link to the HTML receipt and invoice
-     *
-     * @param string          $content
-     * @param string          $content_again
-     * @param EE_message_type $incoming_message_type
-     * @return string
-     */
-    public function add_powered_by_credit_link_to_receipt_and_invoice(
-        string $content,
-        string $content_again,
-        EE_message_type $incoming_message_type
-    ): string {
-        if (
-            ($incoming_message_type->name === 'invoice' || $incoming_message_type->name === 'receipt')
-            && apply_filters('FHEE_EE_Html_messenger__add_powered_by_credit_link_to_receipt_and_invoice', true)
-        ) {
-            $content .= EEH_Template::powered_by_event_espresso(
-                'aln-cntr',
-                '',
-                ['utm_content' => 'messages_system']
-            ) . EEH_HTML::div(EEH_HTML::p('&nbsp;'));
-        }
-        return $content;
-    }
+	/**
+	 * The following are the properties that this messenger requires for displaying the html
+	 */
+	/**
+	 * This is the html body generated by the template via the message type.
+	 *
+	 * @var string
+	 */
+	protected $_content = '';
+
+	/**
+	 * This is for the page title that gets displayed.  (Why use "subject"?  Because the "title" tag in html is
+	 * equivalent to the "subject" of the page.
+	 *
+	 * @var string
+	 */
+	protected $_subject = '';
+
+
+	/**
+	 * EE_Html_messenger constructor.
+	 */
+	public function __construct()
+	{
+		// set properties
+		$this->name                = 'html';
+		$this->description         = esc_html__(
+			'This messenger outputs a message to a browser for display.',
+			'event_espresso'
+		);
+		$this->label               = [
+			'singular' => esc_html__('html', 'event_espresso'),
+			'plural'   => esc_html__('html', 'event_espresso'),
+		];
+		$this->activate_on_install = true;
+		// add the "powered by EE" credit link to the HTML receipt and invoice
+		add_filter(
+			'FHEE__EE_Html_messenger___send_message__main_body',
+			[$this, 'add_powered_by_credit_link_to_receipt_and_invoice'],
+			10,
+			3
+		);
+		parent::__construct();
+	}
+
+
+	/**
+	 * HTML Messenger desires execution immediately.
+	 *
+	 * @return bool
+	 * @since  4.9.0
+	 * @see    parent::send_now() for documentation.
+	 */
+	public function send_now(): bool
+	{
+		return true;
+	}
+
+
+	/**
+	 * HTML Messenger allows an empty to field.
+	 *
+	 * @return bool
+	 * @since  4.9.0
+	 * @see    parent::allow_empty_to_field() for documentation
+	 */
+	public function allow_empty_to_field(): bool
+	{
+		return true;
+	}
+
+
+	/**
+	 * @see abstract declaration in EE_messenger for details.
+	 */
+	protected function _set_admin_pages()
+	{
+		$this->admin_registered_pages = ['events_edit' => true];
+	}
+
+
+	/**
+	 * @see abstract declaration in EE_messenger for details.
+	 */
+	protected function _set_valid_shortcodes()
+	{
+		$this->_valid_shortcodes = [];
+	}
+
+
+	/**
+	 * @see abstract declaration in EE_messenger for details.
+	 */
+	protected function _set_validator_config()
+	{
+		$this->_validator_config = [
+			'subject'                       => [
+				'shortcodes' => ['organization', 'primary_registration_details', 'email', 'transaction'],
+			],
+			'content'                       => [
+				'shortcodes' => [
+					'organization',
+					'primary_registration_list',
+					'primary_registration_details',
+					'email',
+					'transaction',
+					'event_list',
+					'payment_list',
+					'venue',
+					'line_item_list',
+					'messenger',
+					'ticket_list',
+				],
+			],
+			'event_list'                    => [
+				'shortcodes' => [
+					'event',
+					'ticket_list',
+					'venue',
+					'primary_registration_details',
+					'primary_registration_list',
+					'event_author',
+				],
+				'required'   => ['[EVENT_LIST]'],
+			],
+			'ticket_list'                   => [
+				'shortcodes' => [
+					'attendee_list',
+					'ticket',
+					'datetime_list',
+					'primary_registration_details',
+					'line_item_list',
+					'venue',
+				],
+				'required'   => ['[TICKET_LIST]'],
+			],
+			'ticket_line_item_no_pms'       => [
+				'shortcodes' => ['line_item', 'ticket'],
+				'required'   => ['[TICKET_LINE_ITEM_LIST]'],
+			],
+			'ticket_line_item_pms'          => [
+				'shortcodes' => ['line_item', 'ticket', 'line_item_list'],
+				'required'   => ['[TICKET_LINE_ITEM_LIST]'],
+			],
+			'price_modifier_line_item_list' => [
+				'shortcodes' => ['line_item'],
+				'required'   => ['[PRICE_MODIFIER_LINE_ITEM_LIST]'],
+			],
+			'datetime_list'                 => [
+				'shortcodes' => ['datetime'],
+				'required'   => ['[DATETIME_LIST]'],
+			],
+			'attendee_list'                 => [
+				'shortcodes' => ['attendee'],
+				'required'   => ['[ATTENDEE_LIST]'],
+			],
+			'tax_line_item_list'            => [
+				'shortcodes' => ['line_item'],
+				'required'   => ['[TAX_LINE_ITEM_LIST]'],
+			],
+			'additional_line_item_list'     => [
+				'shortcodes' => ['line_item'],
+				'required'   => ['[ADDITIONAL_LINE_ITEM_LIST]'],
+			],
+			'payment_list'                  => [
+				'shortcodes' => ['payment'],
+				'required'   => ['[PAYMENT_LIST_*]'],
+			],
+		];
+	}
+
+
+	/**
+	 * This is a method called from EE_messages when this messenger is a generating messenger and the sending messenger
+	 * is a different messenger.  Child messengers can set hooks for the sending messenger to callback on if necessary
+	 * (i.e. swap out css files or something else).
+	 *
+	 * @param string $sending_messenger_name the name of the sending messenger so we only set the hooks needed.
+	 * @return void
+	 * @since 4.5.0
+	 */
+	public function do_secondary_messenger_hooks($sending_messenger_name)
+	{
+		if ($sending_messenger_name === 'pdf') {
+			add_filter('EE_messenger__get_variation__variation', [$this, 'add_html_css'], 10, 8);
+		}
+	}
+
+
+	/**
+	 * @param                            $variation_path
+	 * @param EE_Messages_Template_Pack  $template_pack
+	 * @param                            $messenger_name
+	 * @param                            $message_type_name
+	 * @param                            $url
+	 * @param                            $type
+	 * @param                            $variation
+	 * @param                            $skip_filters
+	 * @return string
+	 */
+	public function add_html_css(
+		$variation_path,
+		EE_Messages_Template_Pack $template_pack,
+		$messenger_name,
+		$message_type_name,
+		$url,
+		$type,
+		$variation,
+		$skip_filters
+	): string {
+		return $template_pack->get_variation(
+			$this->name,
+			$message_type_name,
+			$type,
+			$variation,
+			$url,
+			'.css',
+			$skip_filters
+		);
+	}
+
+
+	/**
+	 * Takes care of enqueuing any necessary scripts or styles for the page.  A do_action() so message types using this
+	 * messenger can add their own js.
+	 *
+	 * @return void.
+	 */
+	public function enqueue_scripts_styles()
+	{
+		parent::enqueue_scripts_styles();
+		do_action('AHEE__EE_Html_messenger__enqueue_scripts_styles');
+	}
+
+
+	/**
+	 * _set_template_fields
+	 * This sets up the fields that a messenger requires for the message to go out.
+	 *
+	 * @access  protected
+	 * @return void
+	 */
+	protected function _set_template_fields()
+	{
+		// any extra template fields that are NOT used by the messenger
+		// but will get used by a messenger field for shortcode replacement
+		// get added to the 'extra' key in an associated array
+		// indexed by the messenger field they relate to.
+		// This is important for the Messages_admin to know what fields to display to the user.
+		// Also, notice that the "values" are equal to the field type
+		// that messages admin will use to know what kind of field to display.
+		// The values ALSO have one index labeled "shortcode".
+		// The values in that array indicate which ACTUAL SHORTCODE (i.e. [SHORTCODE])
+		// is required in order for this extra field to be displayed.
+		//  If the required shortcode isn't part of the shortcodes array
+		// then the field is not needed and will not be displayed/parsed.
+		$this->_template_fields = [
+			'subject' => [
+				'input'      => 'text',
+				'label'      => esc_html__('Page Title', 'event_espresso'),
+				'type'       => 'string',
+				'required'   => true,
+				'validation' => true,
+				'css_class'  => 'large-text',
+				'format'     => '%s',
+			],
+			'content' => '',
+			// left empty b/c it is in the "extra array" but messenger still needs needs to know this is a field.
+			'extra'   => [
+				'content' => [
+					'main'                          => [
+						'input'      => 'wp_editor',
+						'label'      => esc_html__('Main Content', 'event_espresso'),
+						'type'       => 'string',
+						'required'   => true,
+						'validation' => true,
+						'format'     => '%s',
+						'rows'       => '15',
+					],
+					'event_list'                    => [
+						'input'               => 'wp_editor',
+						'label'               => '[EVENT_LIST]',
+						'type'                => 'string',
+						'required'            => false,
+						'validation'          => true,
+						'format'              => '%s',
+						'rows'                => '15',
+						'shortcodes_required' => ['[EVENT_LIST]'],
+					],
+					'ticket_list'                   => [
+						'input'               => 'textarea',
+						'label'               => '[TICKET_LIST]',
+						'type'                => 'string',
+						'required'            => false,
+						'validation'          => true,
+						'format'              => '%s',
+						'css_class'           => 'large-text',
+						'rows'                => '10',
+						'shortcodes_required' => ['[TICKET_LIST]'],
+					],
+					'ticket_line_item_no_pms'       => [
+						'input'               => 'textarea',
+						'label'               => '[TICKET_LINE_ITEM_LIST] <br>' . esc_html__(
+							'Ticket Line Item List with no Price Modifiers',
+							'event_espresso'
+						),
+						'type'                => 'string',
+						'required'            => false,
+						'validation'          => true,
+						'format'              => '%s',
+						'css_class'           => 'large-text',
+						'rows'                => '5',
+						'shortcodes_required' => ['[TICKET_LINE_ITEM_LIST]'],
+					],
+					'ticket_line_item_pms'          => [
+						'input'               => 'textarea',
+						'label'               => '[TICKET_LINE_ITEM_LIST] <br>' . esc_html__(
+							'Ticket Line Item List with Price Modifiers',
+							'event_espresso'
+						),
+						'type'                => 'string',
+						'required'            => false,
+						'validation'          => true,
+						'format'              => '%s',
+						'css_class'           => 'large-text',
+						'rows'                => '5',
+						'shortcodes_required' => ['[TICKET_LINE_ITEM_LIST]'],
+					],
+					'price_modifier_line_item_list' => [
+						'input'               => 'textarea',
+						'label'               => '[PRICE_MODIFIER_LINE_ITEM_LIST]',
+						'type'                => 'string',
+						'required'            => false,
+						'validation'          => true,
+						'format'              => '%s',
+						'css_class'           => 'large-text',
+						'rows'                => '5',
+						'shortcodes_required' => ['[PRICE_MODIFIER_LINE_ITEM_LIST]'],
+					],
+					'datetime_list'                 => [
+						'input'               => 'textarea',
+						'label'               => '[DATETIME_LIST]',
+						'type'                => 'string',
+						'required'            => false,
+						'validation'          => true,
+						'format'              => '%s',
+						'css_class'           => 'large-text',
+						'rows'                => '5',
+						'shortcodes_required' => ['[DATETIME_LIST]'],
+					],
+					'attendee_list'                 => [
+						'input'               => 'textarea',
+						'label'               => '[ATTENDEE_LIST]',
+						'type'                => 'string',
+						'required'            => false,
+						'validation'          => true,
+						'format'              => '%s',
+						'css_class'           => 'large-text',
+						'rows'                => '5',
+						'shortcodes_required' => ['[ATTENDEE_LIST]'],
+					],
+					'tax_line_item_list'            => [
+						'input'               => 'textarea',
+						'label'               => '[TAX_LINE_ITEM_LIST]',
+						'type'                => 'string',
+						'required'            => false,
+						'validation'          => true,
+						'format'              => '%s',
+						'css_class'           => 'large-text',
+						'rows'                => '5',
+						'shortcodes_required' => ['[TAX_LINE_ITEM_LIST]'],
+					],
+					'additional_line_item_list'     => [
+						'input'               => 'textarea',
+						'label'               => '[ADDITIONAL_LINE_ITEM_LIST]',
+						'type'                => 'string',
+						'required'            => false,
+						'validation'          => true,
+						'format'              => '%s',
+						'css_class'           => 'large-text',
+						'rows'                => '5',
+						'shortcodes_required' => ['[ADDITIONAL_LINE_ITEM_LIST]'],
+					],
+					'payment_list'                  => [
+						'input'               => 'textarea',
+						'label'               => '[PAYMENT_LIST]',
+						'type'                => 'string',
+						'required'            => false,
+						'validation'          => true,
+						'format'              => '%s',
+						'css_class'           => 'large-text',
+						'rows'                => '5',
+						'shortcodes_required' => ['[PAYMENT_LIST_*]'],
+					],
+				],
+			],
+		];
+	}
+
+
+	/**
+	 * @see   definition of this method in parent
+	 * @since 4.5.0
+	 */
+	protected function _set_default_message_types()
+	{
+		$this->_default_message_types = ['receipt', 'invoice'];
+	}
+
+
+	/**
+	 * @see   definition of this method in parent
+	 * @since 4.5.0
+	 */
+	protected function _set_valid_message_types()
+	{
+		$this->_valid_message_types = ['receipt', 'invoice'];
+	}
+
+
+	/**
+	 * Displays the message in the browser.
+	 *
+	 * @return void.
+	 * @since 4.5.0
+	 */
+	protected function _send_message()
+	{
+		$this->_template_args = [
+			'page_title' => $this->_subject,
+			'base_css'   => $this->get_variation(
+				$this->_tmp_pack,
+				$this->_incoming_message_type->name,
+				true,
+				'base',
+				$this->_variation
+			),
+			'print_css'  => $this->get_variation(
+				$this->_tmp_pack,
+				$this->_incoming_message_type->name,
+				true,
+				'print',
+				$this->_variation
+			),
+			'main_css'   => $this->get_variation(
+				$this->_tmp_pack,
+				$this->_incoming_message_type->name,
+				true,
+				'main',
+				$this->_variation
+			),
+			'main_body'  => wpautop(
+				apply_filters(
+					'FHEE__EE_Html_messenger___send_message__main_body',
+					$this->_content,
+					$this->_content,
+					$this->_incoming_message_type
+				)
+			),
+		];
+		$this->_deregister_wp_hooks();
+		add_action('wp_enqueue_scripts', [$this, 'enqueue_scripts_styles']);
+		echo ($this->_get_main_template());
+		exit();
+	}
+
+
+	/**
+	 * The purpose of this function is to de register all actions hooked into wp_head and wp_footer so that it doesn't
+	 * interfere with our templates.  If users want to add any custom styles or scripts they must use the
+	 * AHEE__EE_Html_messenger__enqueue_scripts_styles hook.
+	 *
+	 * @return void
+	 * @since 4.5.0
+	 */
+	protected function _deregister_wp_hooks()
+	{
+		remove_all_actions('wp_head');
+		remove_all_actions('wp_footer');
+		remove_all_actions('wp_print_footer_scripts');
+		remove_all_actions('wp_enqueue_scripts');
+		global $wp_scripts, $wp_styles;
+		$wp_scripts = $wp_styles = [];
+		// just add back in wp_enqueue_scripts and wp_print_footer_scripts cause that's all we want to load.
+		add_action('wp_footer', 'wp_print_footer_scripts');
+		add_action('wp_print_footer_scripts', '_wp_footer_scripts');
+		add_action('wp_head', 'wp_enqueue_scripts');
+	}
+
+
+	/**
+	 * Overwrite parent _get_main_template for display_html purposes.
+	 *
+	 * @param bool $preview
+	 * @return string
+	 * @since  4.5.0
+	 */
+	protected function _get_main_template($preview = false): string
+	{
+		$wrapper_template = $this->_tmp_pack->get_wrapper($this->name);
+		// include message type as a template arg
+		$this->_template_args['message_type'] = $this->_incoming_message_type;
+		return EEH_Template::display_template($wrapper_template, $this->_template_args, true);
+	}
+
+
+	/**
+	 * @return void
+	 */
+	protected function _preview()
+	{
+		$this->_send_message();
+	}
+
+
+	protected function _set_admin_settings_fields()
+	{
+	}
+
+
+	/**
+	 * add the "powered by EE" credit link to the HTML receipt and invoice
+	 *
+	 * @param string          $content
+	 * @param string          $content_again
+	 * @param EE_message_type $incoming_message_type
+	 * @return string
+	 */
+	public function add_powered_by_credit_link_to_receipt_and_invoice(
+		string $content,
+		string $content_again,
+		EE_message_type $incoming_message_type
+	): string {
+		if (
+			($incoming_message_type->name === 'invoice' || $incoming_message_type->name === 'receipt')
+			&& apply_filters('FHEE_EE_Html_messenger__add_powered_by_credit_link_to_receipt_and_invoice', true)
+		) {
+			$content .= EEH_Template::powered_by_event_espresso(
+				'aln-cntr',
+				'',
+				['utm_content' => 'messages_system']
+			) . EEH_HTML::div(EEH_HTML::p('&nbsp;'));
+		}
+		return $content;
+	}
 }

core/libraries/messages/messenger/EE_Email_messenger.class.php

Indentation +644 added lines, -644 removed lines

@@ -5,648 +5,648 @@
  */
 class EE_Email_messenger extends EE_messenger
 {
-    /**
-     * To field for email
-     * @var string
-     */
-    protected $_to = '';
-
-
-    /**
-     * CC field for email.
-     * @var string
-     */
-    protected $_cc = '';
-
-    /**
-     * From field for email
-     * @var string
-     */
-    protected $_from = '';
-
-
-    /**
-     * Subject field for email
-     * @var string
-     */
-    protected $_subject = '';
-
-
-    /**
-     * Content field for email
-     * @var string
-     */
-    protected $_content = '';
-
-
-    /**
-     * constructor
-     *
-     * @access public
-     */
-    public function __construct()
-    {
-        // set name and description properties
-        $this->name                = 'email';
-        $this->description         = sprintf(
-            esc_html__(
-                'This messenger delivers messages via email using the built-in %s function included with WordPress',
-                'event_espresso'
-            ),
-            '<code>wp_mail</code>'
-        );
-        $this->label               = array(
-            'singular' => esc_html__('email', 'event_espresso'),
-            'plural'   => esc_html__('emails', 'event_espresso'),
-        );
-        $this->activate_on_install = true;
-
-        // we're using defaults so let's call parent constructor that will take care of setting up all the other
-        // properties
-        parent::__construct();
-    }
-
-
-    /**
-     * see abstract declaration in parent class for details.
-     */
-    protected function _set_admin_pages()
-    {
-        $this->admin_registered_pages = array(
-            'events_edit' => true,
-        );
-    }
-
-
-    /**
-     * see abstract declaration in parent class for details
-     */
-    protected function _set_valid_shortcodes()
-    {
-        // remember by leaving the other fields not set, those fields will inherit the valid shortcodes from the
-        // message type.
-        $this->_valid_shortcodes = array(
-            'to'   => array('email', 'event_author', 'primary_registration_details', 'recipient_details'),
-            'cc' => array('email', 'event_author', 'primary_registration_details', 'recipient_details'),
-            'from' => array('email', 'event_author', 'primary_registration_details', 'recipient_details'),
-        );
-    }
-
-
-    /**
-     * see abstract declaration in parent class for details
-     *
-     * @access protected
-     * @return void
-     */
-    protected function _set_validator_config()
-    {
-        $valid_shortcodes = $this->get_valid_shortcodes();
-
-        $this->_validator_config = array(
-            'to'            => array(
-                'shortcodes' => $valid_shortcodes['to'],
-                'type'       => 'email',
-            ),
-            'cc' => array(
-                'shortcodes' => $valid_shortcodes['to'],
-                'type' => 'email',
-            ),
-            'from'          => array(
-                'shortcodes' => $valid_shortcodes['from'],
-                'type'       => 'email',
-            ),
-            'subject'       => array(
-                'shortcodes' => array(
-                    'organization',
-                    'primary_registration_details',
-                    'event_author',
-                    'primary_registration_details',
-                    'recipient_details',
-                ),
-            ),
-            'content'       => array(
-                'shortcodes' => array(
-                    'event_list',
-                    'attendee_list',
-                    'ticket_list',
-                    'organization',
-                    'primary_registration_details',
-                    'primary_registration_list',
-                    'event_author',
-                    'recipient_details',
-                    'recipient_list',
-                    'transaction',
-                    'messenger',
-                ),
-            ),
-            'attendee_list' => array(
-                'shortcodes' => array('attendee', 'event_list', 'ticket_list'),
-                'required'   => array('[ATTENDEE_LIST]'),
-            ),
-            'event_list'    => array(
-                'shortcodes' => array(
-                    'event',
-                    'attendee_list',
-                    'ticket_list',
-                    'venue',
-                    'datetime_list',
-                    'attendee',
-                    'primary_registration_details',
-                    'primary_registration_list',
-                    'event_author',
-                    'recipient_details',
-                    'recipient_list',
-                ),
-                'required'   => array('[EVENT_LIST]'),
-            ),
-            'ticket_list'   => array(
-                'shortcodes' => array(
-                    'event_list',
-                    'attendee_list',
-                    'ticket',
-                    'datetime_list',
-                    'primary_registration_details',
-                    'recipient_details',
-                ),
-                'required'   => array('[TICKET_LIST]'),
-            ),
-            'datetime_list' => array(
-                'shortcodes' => array('datetime'),
-                'required'   => array('[DATETIME_LIST]'),
-            ),
-        );
-    }
-
-
-    /**
-     * @see   parent EE_messenger class for docs
-     * @since 4.5.0
-     */
-    public function do_secondary_messenger_hooks($sending_messenger_name)
-    {
-        if ($sending_messenger_name === 'html') {
-            add_filter('FHEE__EE_Messages_Template_Pack__get_variation', array($this, 'add_email_css'), 10, 8);
-        }
-    }
-
-
-    public function add_email_css(
-        $variation_path,
-        $messenger,
-        $message_type,
-        $type,
-        $variation,
-        $file_extension,
-        $url,
-        EE_Messages_Template_Pack $template_pack
-    ) {
-        // prevent recursion on this callback.
-        remove_filter('FHEE__EE_Messages_Template_Pack__get_variation', array($this, 'add_email_css'), 10);
-        $variation = $this->get_variation($template_pack, $message_type, $url, 'main', $variation, false);
-
-        add_filter('FHEE__EE_Messages_Template_Pack__get_variation', array($this, 'add_email_css'), 10, 8);
-        return $variation;
-    }
-
-
-    /**
-     * See parent for details
-     *
-     * @access protected
-     * @return void
-     */
-    protected function _set_test_settings_fields()
-    {
-        $this->_test_settings_fields = array(
-            'to'      => array(
-                'input'      => 'text',
-                'label'      => esc_html__('Send a test email to', 'event_espresso'),
-                'type'       => 'email',
-                'required'   => false,
-                'validation' => true,
-                'css_class'  => 'large-text',
-                'format'     => '%s',
-                'default'    => get_bloginfo('admin_email'),
-            ),
-            'subject' => array(
-                'input'      => 'hidden',
-                'label'      => '',
-                'type'       => 'string',
-                'required'   => false,
-                'validation' => false,
-                'format'     => '%s',
-                'value'      => sprintf(esc_html__('Test email sent from %s', 'event_espresso'), get_bloginfo('name')),
-                'default'    => '',
-                'css_class'  => '',
-            ),
-        );
-    }
-
-
-    /**
-     * _set_template_fields
-     * This sets up the fields that a messenger requires for the message to go out.
-     *
-     * @access  protected
-     * @return void
-     */
-    protected function _set_template_fields()
-    {
-        // any extra template fields that are NOT used by the messenger but will get used by a messenger field for
-        // shortcode replacement get added to the 'extra' key in an associated array indexed by the messenger field
-        // they relate to.  This is important for the Messages_admin to know what fields to display to the user.
-        //  Also, notice that the "values" are equal to the field type that messages admin will use to know what
-        // kind of field to display. The values ALSO have one index labeled "shortcode".  the values in that array
-        // indicate which ACTUAL SHORTCODE (i.e. [SHORTCODE]) is required in order for this extra field to be
-        // displayed.  If the required shortcode isn't part of the shortcodes array then the field is not needed and
-        // will not be displayed/parsed.
-        $this->_template_fields = array(
-            'to'      => array(
-                'input'      => 'text',
-                'label'      => esc_html_x(
-                    'To',
-                    'Label for the "To" field for email addresses',
-                    'event_espresso'
-                ),
-                'type'       => 'string',
-                'required'   => true,
-                'validation' => true,
-                'css_class'  => 'large-text',
-                'format'     => '%s',
-            ),
-            'cc'      => array(
-                'input'      => 'text',
-                'label'      => esc_html_x(
-                    'CC',
-                    'Label for the "Carbon Copy" field used for additional email addresses',
-                    'event_espresso'
-                ),
-                'type'       => 'string',
-                'required'   => false,
-                'validation' => true,
-                'css_class'  => 'large-text',
-                'format'     => '%s',
-            ),
-            'from'    => array(
-                'input'      => 'text',
-                'label'      => esc_html_x(
-                    'From',
-                    'Label for the "From" field for email addresses.',
-                    'event_espresso'
-                ),
-                'type'       => 'string',
-                'required'   => true,
-                'validation' => true,
-                'css_class'  => 'large-text',
-                'format'     => '%s',
-            ),
-            'subject' => array(
-                'input'      => 'text',
-                'label'      => esc_html_x(
-                    'Subject',
-                    'Label for the "Subject" field (short description of contents) for emails.',
-                    'event_espresso'
-                ),
-                'type'       => 'string',
-                'required'   => true,
-                'validation' => true,
-                'css_class'  => 'large-text',
-                'format'     => '%s',
-            ),
-            'content' => '',
-            // left empty b/c it is in the "extra array" but messenger still needs needs to know this is a field.
-            'extra'   => array(
-                'content' => array(
-                    'main'          => array(
-                        'input'      => 'wp_editor',
-                        'label'      => esc_html__('Main Content', 'event_espresso'),
-                        'type'       => 'string',
-                        'required'   => true,
-                        'validation' => true,
-                        'format'     => '%s',
-                        'rows'       => '15',
-                    ),
-                    'event_list'    => array(
-                        'input'               => 'wp_editor',
-                        'label'               => '[EVENT_LIST]',
-                        'type'                => 'string',
-                        'required'            => false,
-                        'validation'          => true,
-                        'format'              => '%s',
-                        'rows'                => '15',
-                        'shortcodes_required' => array('[EVENT_LIST]'),
-                    ),
-                    'attendee_list' => array(
-                        'input'               => 'textarea',
-                        'label'               => '[ATTENDEE_LIST]',
-                        'type'                => 'string',
-                        'required'            => false,
-                        'validation'          => true,
-                        'format'              => '%s',
-                        'css_class'           => 'large-text',
-                        'rows'                => '5',
-                        'shortcodes_required' => array('[ATTENDEE_LIST]'),
-                    ),
-                    'ticket_list'   => array(
-                        'input'               => 'textarea',
-                        'label'               => '[TICKET_LIST]',
-                        'type'                => 'string',
-                        'required'            => false,
-                        'validation'          => true,
-                        'format'              => '%s',
-                        'css_class'           => 'large-text',
-                        'rows'                => '10',
-                        'shortcodes_required' => array('[TICKET_LIST]'),
-                    ),
-                    'datetime_list' => array(
-                        'input'               => 'textarea',
-                        'label'               => '[DATETIME_LIST]',
-                        'type'                => 'string',
-                        'required'            => false,
-                        'validation'          => true,
-                        'format'              => '%s',
-                        'css_class'           => 'large-text',
-                        'rows'                => '10',
-                        'shortcodes_required' => array('[DATETIME_LIST]'),
-                    ),
-                ),
-            ),
-        );
-    }
-
-
-    /**
-     * See definition of this class in parent
-     */
-    protected function _set_default_message_types()
-    {
-        $this->_default_message_types = array(
-            'payment',
-            'payment_refund',
-            'registration',
-            'not_approved_registration',
-            'pending_approval',
-        );
-    }
-
-
-    /**
-     * @see   definition of this class in parent
-     * @since 4.5.0
-     */
-    protected function _set_valid_message_types()
-    {
-        $this->_valid_message_types = array(
-            'payment',
-            'registration',
-            'not_approved_registration',
-            'declined_registration',
-            'cancelled_registration',
-            'pending_approval',
-            'registration_summary',
-            'payment_reminder',
-            'payment_declined',
-            'payment_refund',
-        );
-    }
-
-
-    /**
-     * setting up admin_settings_fields for messenger.
-     */
-    protected function _set_admin_settings_fields()
-    {
-    }
-
-    /**
-     * We just deliver the messages don't kill us!!
-     *
-     * @return bool|WP_Error true if message delivered, false if it didn't deliver OR bubble up any error object if
-     *              present.
-     * @throws EE_Error
-     * @throws \TijsVerkoyen\CssToInlineStyles\Exception
-     */
-    protected function _send_message()
-    {
-        $success = wp_mail(
-            $this->_to,
-            // some old values for subject may be expecting HTML entities to be decoded in the subject
-            // and subjects aren't interpreted as HTML, so there should be no HTML in them
-            wp_strip_all_tags(wp_specialchars_decode($this->_subject, ENT_QUOTES)),
-            $this->_body(),
-            $this->_headers()
-        );
-        if (! $success) {
-            EE_Error::add_error(
-                sprintf(
-                    esc_html__(
-                        'The email did not send successfully.%3$sThe WordPress wp_mail function is used for sending mails but does not give any useful information when an email fails to send.%3$sIt is possible the "to" address (%1$s) or "from" address (%2$s) is invalid.%3$s',
-                        'event_espresso'
-                    ),
-                    $this->_to,
-                    $this->_from,
-                    '<br />'
-                ),
-                __FILE__,
-                __FUNCTION__,
-                __LINE__
-            );
-        }
-        return $success;
-    }
-
-
-    /**
-     * see parent for definition
-     *
-     * @return string html body of the message content and the related css.
-     * @throws EE_Error
-     * @throws \TijsVerkoyen\CssToInlineStyles\Exception
-     */
-    protected function _preview()
-    {
-        return $this->_body(true);
-    }
-
-
-    /**
-     * Setup headers for email
-     *
-     * @access protected
-     * @return string formatted header for email
-     */
-    protected function _headers()
-    {
-        $this->_ensure_has_from_email_address();
-        $from    = $this->_from;
-        $headers = array(
-            'From:' . $from,
-            'Reply-To:' . $from,
-            'Content-Type:text/html; charset=utf-8',
-        );
-
-        /**
-         * Second condition added as a result of https://events.codebasehq.com/projects/event-espresso/tickets/11416 to
-         * cover back compat where there may be users who have saved cc values in their db for the newsletter message
-         * type which they are no longer able to change.
-         */
-        if (! empty($this->_cc) && ! $this->_incoming_message_type instanceof EE_Newsletter_message_type) {
-            $headers[] = 'cc: ' . $this->_cc;
-        }
-
-        // but wait!  Header's for the from is NOT reliable because some plugins don't respect From: as set in the
-        // header.
-        add_filter('wp_mail_from', array($this, 'set_from_address'), 100);
-        add_filter('wp_mail_from_name', array($this, 'set_from_name'), 100);
-        return apply_filters('FHEE__EE_Email_messenger___headers', $headers, $this->_incoming_message_type, $this);
-    }
-
-
-    /**
-     * This simply ensures that the from address is not empty.  If it is, then we use whatever is set as the site email
-     * address for the from address to avoid problems with sending emails.
-     */
-    protected function _ensure_has_from_email_address()
-    {
-        if (empty($this->_from)) {
-            $this->_from = get_bloginfo('admin_email');
-        }
-    }
-
-
-    /**
-     * This simply parses whatever is set as the $_from address and determines if it is in the format {name} <{email}>
-     * or just {email} and returns an array with the "from_name" and "from_email" as the values. Note from_name *MAY*
-     * be empty
-     *
-     * @since 4.3.1
-     * @return array
-     */
-    private function _parse_from()
-    {
-        if (strpos($this->_from, '<') !== false) {
-            $from_name = substr($this->_from, 0, strpos($this->_from, '<') - 1);
-            $from_name = str_replace('"', '', $from_name);
-            $from_name = trim($from_name);
-
-            $from_email = substr($this->_from, strpos($this->_from, '<') + 1);
-            $from_email = str_replace('>', '', $from_email);
-            $from_email = trim($from_email);
-        } elseif (trim($this->_from) !== '') {
-            $from_name  = '';
-            $from_email = trim($this->_from);
-        } else {
-            $from_name = $from_email = '';
-        }
-        return array($from_name, $from_email);
-    }
-
-
-    /**
-     * Callback for the wp_mail_from filter.
-     *
-     * @since 4.3.1
-     * @param string $from_email What the original from_email is.
-     * @return string
-     */
-    public function set_from_address($from_email)
-    {
-        $parsed_from = $this->_parse_from();
-        // includes fallback if the parsing failed.
-        $from_email = is_array($parsed_from) && ! empty($parsed_from[1])
-            ? $parsed_from[1]
-            : get_bloginfo('admin_email');
-        return $from_email;
-    }
-
-
-    /**
-     * Callback fro the wp_mail_from_name filter.
-     *
-     * @since 4.3.1
-     * @param string $from_name The original from_name.
-     * @return string
-     */
-    public function set_from_name($from_name)
-    {
-        $parsed_from = $this->_parse_from();
-        if (is_array($parsed_from) && ! empty($parsed_from[0])) {
-            $from_name = $parsed_from[0];
-        }
-
-        // if from name is "WordPress" let's sub in the site name instead (more friendly!)
-        // but realize the default name is HTML entity-encoded
-        $from_name = $from_name == 'WordPress' ? wp_specialchars_decode(get_bloginfo(), ENT_QUOTES) : $from_name;
-
-        return $from_name;
-    }
-
-
-    /**
-     * setup body for email
-     *
-     * @param bool $preview will determine whether this is preview template or not.
-     * @return string formatted body for email.
-     * @throws EE_Error
-     * @throws \TijsVerkoyen\CssToInlineStyles\Exception
-     */
-    protected function _body($preview = false)
-    {
-        // setup template args!
-        $this->_template_args = array(
-            'subject'   => $this->_subject,
-            'from'      => $this->_from,
-            'main_body' => wpautop($this->_content),
-        );
-        $body                 = $this->_get_main_template($preview);
-
-        /**
-         * This filter allows one to bypass the CSSToInlineStyles tool and leave the body untouched.
-         *
-         * @type    bool $preview Indicates whether a preview is being generated or not.
-         * @return  bool    true  indicates to use the inliner, false bypasses it.
-         */
-        if (apply_filters('FHEE__EE_Email_messenger__apply_CSSInliner ', true, $preview)) {
-            // require CssToInlineStyles library and its dependencies via composer autoloader
-            require_once EE_THIRD_PARTY . 'cssinliner/vendor/autoload.php';
-
-            // now if this isn't a preview, let's setup the body so it has inline styles
-            if (! $preview || ($preview && defined('DOING_AJAX'))) {
-                $style = file_get_contents(
-                    $this->get_variation(
-                        $this->_tmp_pack,
-                        $this->_incoming_message_type->name,
-                        false,
-                        'main',
-                        $this->_variation
-                    ),
-                    true
-                );
-                $CSS   = new TijsVerkoyen\CssToInlineStyles\CssToInlineStyles($body, $style);
-                // for some reason the library has a bracket and new line at the beginning.  This takes care of that.
-                $body  = ltrim($CSS->convert(true), ">\n");
-                // see https://events.codebasehq.com/projects/event-espresso/tickets/8609
-                $body  = ltrim($body, "<?");
-            }
-        }
-        return $body;
-    }
-
-
-    /**
-     * This just returns any existing test settings that might be saved in the database
-     *
-     * @access public
-     * @return array
-     */
-    public function get_existing_test_settings()
-    {
-        $settings = parent::get_existing_test_settings();
-        // override subject if present because we always want it to be fresh.
-        if (is_array($settings) && ! empty($settings['subject'])) {
-            $settings['subject'] = sprintf(esc_html__('Test email sent from %s', 'event_espresso'), get_bloginfo('name'));
-        }
-        return $settings;
-    }
+	/**
+	 * To field for email
+	 * @var string
+	 */
+	protected $_to = '';
+
+
+	/**
+	 * CC field for email.
+	 * @var string
+	 */
+	protected $_cc = '';
+
+	/**
+	 * From field for email
+	 * @var string
+	 */
+	protected $_from = '';
+
+
+	/**
+	 * Subject field for email
+	 * @var string
+	 */
+	protected $_subject = '';
+
+
+	/**
+	 * Content field for email
+	 * @var string
+	 */
+	protected $_content = '';
+
+
+	/**
+	 * constructor
+	 *
+	 * @access public
+	 */
+	public function __construct()
+	{
+		// set name and description properties
+		$this->name                = 'email';
+		$this->description         = sprintf(
+			esc_html__(
+				'This messenger delivers messages via email using the built-in %s function included with WordPress',
+				'event_espresso'
+			),
+			'<code>wp_mail</code>'
+		);
+		$this->label               = array(
+			'singular' => esc_html__('email', 'event_espresso'),
+			'plural'   => esc_html__('emails', 'event_espresso'),
+		);
+		$this->activate_on_install = true;
+
+		// we're using defaults so let's call parent constructor that will take care of setting up all the other
+		// properties
+		parent::__construct();
+	}
+
+
+	/**
+	 * see abstract declaration in parent class for details.
+	 */
+	protected function _set_admin_pages()
+	{
+		$this->admin_registered_pages = array(
+			'events_edit' => true,
+		);
+	}
+
+
+	/**
+	 * see abstract declaration in parent class for details
+	 */
+	protected function _set_valid_shortcodes()
+	{
+		// remember by leaving the other fields not set, those fields will inherit the valid shortcodes from the
+		// message type.
+		$this->_valid_shortcodes = array(
+			'to'   => array('email', 'event_author', 'primary_registration_details', 'recipient_details'),
+			'cc' => array('email', 'event_author', 'primary_registration_details', 'recipient_details'),
+			'from' => array('email', 'event_author', 'primary_registration_details', 'recipient_details'),
+		);
+	}
+
+
+	/**
+	 * see abstract declaration in parent class for details
+	 *
+	 * @access protected
+	 * @return void
+	 */
+	protected function _set_validator_config()
+	{
+		$valid_shortcodes = $this->get_valid_shortcodes();
+
+		$this->_validator_config = array(
+			'to'            => array(
+				'shortcodes' => $valid_shortcodes['to'],
+				'type'       => 'email',
+			),
+			'cc' => array(
+				'shortcodes' => $valid_shortcodes['to'],
+				'type' => 'email',
+			),
+			'from'          => array(
+				'shortcodes' => $valid_shortcodes['from'],
+				'type'       => 'email',
+			),
+			'subject'       => array(
+				'shortcodes' => array(
+					'organization',
+					'primary_registration_details',
+					'event_author',
+					'primary_registration_details',
+					'recipient_details',
+				),
+			),
+			'content'       => array(
+				'shortcodes' => array(
+					'event_list',
+					'attendee_list',
+					'ticket_list',
+					'organization',
+					'primary_registration_details',
+					'primary_registration_list',
+					'event_author',
+					'recipient_details',
+					'recipient_list',
+					'transaction',
+					'messenger',
+				),
+			),
+			'attendee_list' => array(
+				'shortcodes' => array('attendee', 'event_list', 'ticket_list'),
+				'required'   => array('[ATTENDEE_LIST]'),
+			),
+			'event_list'    => array(
+				'shortcodes' => array(
+					'event',
+					'attendee_list',
+					'ticket_list',
+					'venue',
+					'datetime_list',
+					'attendee',
+					'primary_registration_details',
+					'primary_registration_list',
+					'event_author',
+					'recipient_details',
+					'recipient_list',
+				),
+				'required'   => array('[EVENT_LIST]'),
+			),
+			'ticket_list'   => array(
+				'shortcodes' => array(
+					'event_list',
+					'attendee_list',
+					'ticket',
+					'datetime_list',
+					'primary_registration_details',
+					'recipient_details',
+				),
+				'required'   => array('[TICKET_LIST]'),
+			),
+			'datetime_list' => array(
+				'shortcodes' => array('datetime'),
+				'required'   => array('[DATETIME_LIST]'),
+			),
+		);
+	}
+
+
+	/**
+	 * @see   parent EE_messenger class for docs
+	 * @since 4.5.0
+	 */
+	public function do_secondary_messenger_hooks($sending_messenger_name)
+	{
+		if ($sending_messenger_name === 'html') {
+			add_filter('FHEE__EE_Messages_Template_Pack__get_variation', array($this, 'add_email_css'), 10, 8);
+		}
+	}
+
+
+	public function add_email_css(
+		$variation_path,
+		$messenger,
+		$message_type,
+		$type,
+		$variation,
+		$file_extension,
+		$url,
+		EE_Messages_Template_Pack $template_pack
+	) {
+		// prevent recursion on this callback.
+		remove_filter('FHEE__EE_Messages_Template_Pack__get_variation', array($this, 'add_email_css'), 10);
+		$variation = $this->get_variation($template_pack, $message_type, $url, 'main', $variation, false);
+
+		add_filter('FHEE__EE_Messages_Template_Pack__get_variation', array($this, 'add_email_css'), 10, 8);
+		return $variation;
+	}
+
+
+	/**
+	 * See parent for details
+	 *
+	 * @access protected
+	 * @return void
+	 */
+	protected function _set_test_settings_fields()
+	{
+		$this->_test_settings_fields = array(
+			'to'      => array(
+				'input'      => 'text',
+				'label'      => esc_html__('Send a test email to', 'event_espresso'),
+				'type'       => 'email',
+				'required'   => false,
+				'validation' => true,
+				'css_class'  => 'large-text',
+				'format'     => '%s',
+				'default'    => get_bloginfo('admin_email'),
+			),
+			'subject' => array(
+				'input'      => 'hidden',
+				'label'      => '',
+				'type'       => 'string',
+				'required'   => false,
+				'validation' => false,
+				'format'     => '%s',
+				'value'      => sprintf(esc_html__('Test email sent from %s', 'event_espresso'), get_bloginfo('name')),
+				'default'    => '',
+				'css_class'  => '',
+			),
+		);
+	}
+
+
+	/**
+	 * _set_template_fields
+	 * This sets up the fields that a messenger requires for the message to go out.
+	 *
+	 * @access  protected
+	 * @return void
+	 */
+	protected function _set_template_fields()
+	{
+		// any extra template fields that are NOT used by the messenger but will get used by a messenger field for
+		// shortcode replacement get added to the 'extra' key in an associated array indexed by the messenger field
+		// they relate to.  This is important for the Messages_admin to know what fields to display to the user.
+		//  Also, notice that the "values" are equal to the field type that messages admin will use to know what
+		// kind of field to display. The values ALSO have one index labeled "shortcode".  the values in that array
+		// indicate which ACTUAL SHORTCODE (i.e. [SHORTCODE]) is required in order for this extra field to be
+		// displayed.  If the required shortcode isn't part of the shortcodes array then the field is not needed and
+		// will not be displayed/parsed.
+		$this->_template_fields = array(
+			'to'      => array(
+				'input'      => 'text',
+				'label'      => esc_html_x(
+					'To',
+					'Label for the "To" field for email addresses',
+					'event_espresso'
+				),
+				'type'       => 'string',
+				'required'   => true,
+				'validation' => true,
+				'css_class'  => 'large-text',
+				'format'     => '%s',
+			),
+			'cc'      => array(
+				'input'      => 'text',
+				'label'      => esc_html_x(
+					'CC',
+					'Label for the "Carbon Copy" field used for additional email addresses',
+					'event_espresso'
+				),
+				'type'       => 'string',
+				'required'   => false,
+				'validation' => true,
+				'css_class'  => 'large-text',
+				'format'     => '%s',
+			),
+			'from'    => array(
+				'input'      => 'text',
+				'label'      => esc_html_x(
+					'From',
+					'Label for the "From" field for email addresses.',
+					'event_espresso'
+				),
+				'type'       => 'string',
+				'required'   => true,
+				'validation' => true,
+				'css_class'  => 'large-text',
+				'format'     => '%s',
+			),
+			'subject' => array(
+				'input'      => 'text',
+				'label'      => esc_html_x(
+					'Subject',
+					'Label for the "Subject" field (short description of contents) for emails.',
+					'event_espresso'
+				),
+				'type'       => 'string',
+				'required'   => true,
+				'validation' => true,
+				'css_class'  => 'large-text',
+				'format'     => '%s',
+			),
+			'content' => '',
+			// left empty b/c it is in the "extra array" but messenger still needs needs to know this is a field.
+			'extra'   => array(
+				'content' => array(
+					'main'          => array(
+						'input'      => 'wp_editor',
+						'label'      => esc_html__('Main Content', 'event_espresso'),
+						'type'       => 'string',
+						'required'   => true,
+						'validation' => true,
+						'format'     => '%s',
+						'rows'       => '15',
+					),
+					'event_list'    => array(
+						'input'               => 'wp_editor',
+						'label'               => '[EVENT_LIST]',
+						'type'                => 'string',
+						'required'            => false,
+						'validation'          => true,
+						'format'              => '%s',
+						'rows'                => '15',
+						'shortcodes_required' => array('[EVENT_LIST]'),
+					),
+					'attendee_list' => array(
+						'input'               => 'textarea',
+						'label'               => '[ATTENDEE_LIST]',
+						'type'                => 'string',
+						'required'            => false,
+						'validation'          => true,
+						'format'              => '%s',
+						'css_class'           => 'large-text',
+						'rows'                => '5',
+						'shortcodes_required' => array('[ATTENDEE_LIST]'),
+					),
+					'ticket_list'   => array(
+						'input'               => 'textarea',
+						'label'               => '[TICKET_LIST]',
+						'type'                => 'string',
+						'required'            => false,
+						'validation'          => true,
+						'format'              => '%s',
+						'css_class'           => 'large-text',
+						'rows'                => '10',
+						'shortcodes_required' => array('[TICKET_LIST]'),
+					),
+					'datetime_list' => array(
+						'input'               => 'textarea',
+						'label'               => '[DATETIME_LIST]',
+						'type'                => 'string',
+						'required'            => false,
+						'validation'          => true,
+						'format'              => '%s',
+						'css_class'           => 'large-text',
+						'rows'                => '10',
+						'shortcodes_required' => array('[DATETIME_LIST]'),
+					),
+				),
+			),
+		);
+	}
+
+
+	/**
+	 * See definition of this class in parent
+	 */
+	protected function _set_default_message_types()
+	{
+		$this->_default_message_types = array(
+			'payment',
+			'payment_refund',
+			'registration',
+			'not_approved_registration',
+			'pending_approval',
+		);
+	}
+
+
+	/**
+	 * @see   definition of this class in parent
+	 * @since 4.5.0
+	 */
+	protected function _set_valid_message_types()
+	{
+		$this->_valid_message_types = array(
+			'payment',
+			'registration',
+			'not_approved_registration',
+			'declined_registration',
+			'cancelled_registration',
+			'pending_approval',
+			'registration_summary',
+			'payment_reminder',
+			'payment_declined',
+			'payment_refund',
+		);
+	}
+
+
+	/**
+	 * setting up admin_settings_fields for messenger.
+	 */
+	protected function _set_admin_settings_fields()
+	{
+	}
+
+	/**
+	 * We just deliver the messages don't kill us!!
+	 *
+	 * @return bool|WP_Error true if message delivered, false if it didn't deliver OR bubble up any error object if
+	 *              present.
+	 * @throws EE_Error
+	 * @throws \TijsVerkoyen\CssToInlineStyles\Exception
+	 */
+	protected function _send_message()
+	{
+		$success = wp_mail(
+			$this->_to,
+			// some old values for subject may be expecting HTML entities to be decoded in the subject
+			// and subjects aren't interpreted as HTML, so there should be no HTML in them
+			wp_strip_all_tags(wp_specialchars_decode($this->_subject, ENT_QUOTES)),
+			$this->_body(),
+			$this->_headers()
+		);
+		if (! $success) {
+			EE_Error::add_error(
+				sprintf(
+					esc_html__(
+						'The email did not send successfully.%3$sThe WordPress wp_mail function is used for sending mails but does not give any useful information when an email fails to send.%3$sIt is possible the "to" address (%1$s) or "from" address (%2$s) is invalid.%3$s',
+						'event_espresso'
+					),
+					$this->_to,
+					$this->_from,
+					'<br />'
+				),
+				__FILE__,
+				__FUNCTION__,
+				__LINE__
+			);
+		}
+		return $success;
+	}
+
+
+	/**
+	 * see parent for definition
+	 *
+	 * @return string html body of the message content and the related css.
+	 * @throws EE_Error
+	 * @throws \TijsVerkoyen\CssToInlineStyles\Exception
+	 */
+	protected function _preview()
+	{
+		return $this->_body(true);
+	}
+
+
+	/**
+	 * Setup headers for email
+	 *
+	 * @access protected
+	 * @return string formatted header for email
+	 */
+	protected function _headers()
+	{
+		$this->_ensure_has_from_email_address();
+		$from    = $this->_from;
+		$headers = array(
+			'From:' . $from,
+			'Reply-To:' . $from,
+			'Content-Type:text/html; charset=utf-8',
+		);
+
+		/**
+		 * Second condition added as a result of https://events.codebasehq.com/projects/event-espresso/tickets/11416 to
+		 * cover back compat where there may be users who have saved cc values in their db for the newsletter message
+		 * type which they are no longer able to change.
+		 */
+		if (! empty($this->_cc) && ! $this->_incoming_message_type instanceof EE_Newsletter_message_type) {
+			$headers[] = 'cc: ' . $this->_cc;
+		}
+
+		// but wait!  Header's for the from is NOT reliable because some plugins don't respect From: as set in the
+		// header.
+		add_filter('wp_mail_from', array($this, 'set_from_address'), 100);
+		add_filter('wp_mail_from_name', array($this, 'set_from_name'), 100);
+		return apply_filters('FHEE__EE_Email_messenger___headers', $headers, $this->_incoming_message_type, $this);
+	}
+
+
+	/**
+	 * This simply ensures that the from address is not empty.  If it is, then we use whatever is set as the site email
+	 * address for the from address to avoid problems with sending emails.
+	 */
+	protected function _ensure_has_from_email_address()
+	{
+		if (empty($this->_from)) {
+			$this->_from = get_bloginfo('admin_email');
+		}
+	}
+
+
+	/**
+	 * This simply parses whatever is set as the $_from address and determines if it is in the format {name} <{email}>
+	 * or just {email} and returns an array with the "from_name" and "from_email" as the values. Note from_name *MAY*
+	 * be empty
+	 *
+	 * @since 4.3.1
+	 * @return array
+	 */
+	private function _parse_from()
+	{
+		if (strpos($this->_from, '<') !== false) {
+			$from_name = substr($this->_from, 0, strpos($this->_from, '<') - 1);
+			$from_name = str_replace('"', '', $from_name);
+			$from_name = trim($from_name);
+
+			$from_email = substr($this->_from, strpos($this->_from, '<') + 1);
+			$from_email = str_replace('>', '', $from_email);
+			$from_email = trim($from_email);
+		} elseif (trim($this->_from) !== '') {
+			$from_name  = '';
+			$from_email = trim($this->_from);
+		} else {
+			$from_name = $from_email = '';
+		}
+		return array($from_name, $from_email);
+	}
+
+
+	/**
+	 * Callback for the wp_mail_from filter.
+	 *
+	 * @since 4.3.1
+	 * @param string $from_email What the original from_email is.
+	 * @return string
+	 */
+	public function set_from_address($from_email)
+	{
+		$parsed_from = $this->_parse_from();
+		// includes fallback if the parsing failed.
+		$from_email = is_array($parsed_from) && ! empty($parsed_from[1])
+			? $parsed_from[1]
+			: get_bloginfo('admin_email');
+		return $from_email;
+	}
+
+
+	/**
+	 * Callback fro the wp_mail_from_name filter.
+	 *
+	 * @since 4.3.1
+	 * @param string $from_name The original from_name.
+	 * @return string
+	 */
+	public function set_from_name($from_name)
+	{
+		$parsed_from = $this->_parse_from();
+		if (is_array($parsed_from) && ! empty($parsed_from[0])) {
+			$from_name = $parsed_from[0];
+		}
+
+		// if from name is "WordPress" let's sub in the site name instead (more friendly!)
+		// but realize the default name is HTML entity-encoded
+		$from_name = $from_name == 'WordPress' ? wp_specialchars_decode(get_bloginfo(), ENT_QUOTES) : $from_name;
+
+		return $from_name;
+	}
+
+
+	/**
+	 * setup body for email
+	 *
+	 * @param bool $preview will determine whether this is preview template or not.
+	 * @return string formatted body for email.
+	 * @throws EE_Error
+	 * @throws \TijsVerkoyen\CssToInlineStyles\Exception
+	 */
+	protected function _body($preview = false)
+	{
+		// setup template args!
+		$this->_template_args = array(
+			'subject'   => $this->_subject,
+			'from'      => $this->_from,
+			'main_body' => wpautop($this->_content),
+		);
+		$body                 = $this->_get_main_template($preview);
+
+		/**
+		 * This filter allows one to bypass the CSSToInlineStyles tool and leave the body untouched.
+		 *
+		 * @type    bool $preview Indicates whether a preview is being generated or not.
+		 * @return  bool    true  indicates to use the inliner, false bypasses it.
+		 */
+		if (apply_filters('FHEE__EE_Email_messenger__apply_CSSInliner ', true, $preview)) {
+			// require CssToInlineStyles library and its dependencies via composer autoloader
+			require_once EE_THIRD_PARTY . 'cssinliner/vendor/autoload.php';
+
+			// now if this isn't a preview, let's setup the body so it has inline styles
+			if (! $preview || ($preview && defined('DOING_AJAX'))) {
+				$style = file_get_contents(
+					$this->get_variation(
+						$this->_tmp_pack,
+						$this->_incoming_message_type->name,
+						false,
+						'main',
+						$this->_variation
+					),
+					true
+				);
+				$CSS   = new TijsVerkoyen\CssToInlineStyles\CssToInlineStyles($body, $style);
+				// for some reason the library has a bracket and new line at the beginning.  This takes care of that.
+				$body  = ltrim($CSS->convert(true), ">\n");
+				// see https://events.codebasehq.com/projects/event-espresso/tickets/8609
+				$body  = ltrim($body, "<?");
+			}
+		}
+		return $body;
+	}
+
+
+	/**
+	 * This just returns any existing test settings that might be saved in the database
+	 *
+	 * @access public
+	 * @return array
+	 */
+	public function get_existing_test_settings()
+	{
+		$settings = parent::get_existing_test_settings();
+		// override subject if present because we always want it to be fresh.
+		if (is_array($settings) && ! empty($settings['subject'])) {
+			$settings['subject'] = sprintf(esc_html__('Test email sent from %s', 'event_espresso'), get_bloginfo('name'));
+		}
+		return $settings;
+	}
 }

core/libraries/messages/messenger/EE_Pdf_messenger.class.php

Indentation +344 added lines, -344 removed lines

@@ -13,349 +13,349 @@
  */
 class EE_Pdf_messenger extends EE_messenger
 {
-    /**
-     * The following are the properties that this messenger requires for generating pdf
-     */
-
-    /**
-     * This is the pdf body generated by the template via the message type.
-     *
-     * @var string
-     */
-    protected $_content;
-
-
-    /**
-     * This is for the page title that gets displayed.  This will end up being the filename for the generated pdf.
-     *
-     * @var string
-     */
-    protected $_subject;
-
-
-    /**
-     * @return EE_Pdf_messenger
-     */
-    public function __construct()
-    {
-        // set properties
-        $this->name = 'pdf';
-        $this->description = esc_html__('This messenger is used for generating a pdf version of the message.', 'event_espresso');
-        $this->label = array(
-            'singular' => esc_html__('PDF', 'event_espresso'),
-            'plural' => esc_html__('PDFs', 'event_espresso')
-        );
-        $this->activate_on_install = true;
-
-        parent::__construct();
-    }
-
-
-    /**
-     * PDF Messenger desires execution immediately.
-     * @see  parent::send_now() for documentation.
-     * @since  4.9.0
-     * @return bool
-     */
-    public function send_now()
-    {
-        return true;
-    }
-
-
-    /**
-     * HTML Messenger allows an empty to field.
-     * @see parent::allow_empty_to_field() for documentation
-     * @since  4.9.0
-     * @return bool
-     */
-    public function allow_empty_to_field()
-    {
-        return true;
-    }
-
-
-    /**
-     * @see abstract declaration in EE_messenger for details.
-     */
-    protected function _set_admin_pages()
-    {
-        $this->admin_registered_pages = array('events_edit' => false);
-    }
-
-
-    /**
-     * @see abstract declaration in EE_messenger for details.
-     */
-    protected function _set_valid_shortcodes()
-    {
-        $this->_valid_shortcodes = array();
-    }
-
-
-    /**
-     * @see abstract declaration in EE_messenger for details.
-     */
-    protected function _set_validator_config()
-    {
-        $this->_validator_config = array(
-            'subject' => array(
-                'shortcodes' => array('recipient_details', 'organization', 'event', 'ticket', 'venue', 'primary_registration_details', 'event_author', 'email', 'event_meta', 'recipient_list', 'transaction', 'datetime_list', 'datetime')
-            ),
-            'content' => array(
-                'shortcodes' => array('recipient_details', 'organization', 'event', 'ticket', 'venue', 'primary_registration_details', 'event_author', 'email', 'event_meta', 'recipient_list', 'transaction', 'datetime_list', 'datetime')
-            ),
-            'attendee_list' => array(
-                'shortcodes' => array('attendee', 'event_list', 'ticket_list'),
-                'required' => array('[ATTENDEE_LIST]')
-            ),
-            'event_list' => array(
-                'shortcodes' => array('event', 'attendee_list', 'ticket_list', 'venue', 'datetime_list', 'attendee', 'primary_registration_details', 'primary_registration_list', 'event_author', 'recipient_details', 'recipient_list'),
-                'required' => array('[EVENT_LIST]')
-            ),
-            'ticket_list' => array(
-                'shortcodes' => array('event_list', 'attendee_list', 'ticket', 'datetime_list', 'primary_registration_details', 'recipient_details'),
-                'required' => array('[TICKET_LIST]')
-            ),
-            'datetime_list' => array(
-                'shortcodes' => array('datetime'),
-                'required' => array('[DATETIME_LIST]')
-            ),
-        );
-    }
-
-
-    /**
-     * Takes care of enqueuing any necessary scripts or styles for the page.  A do_action() so message types using this messenger can add their own js.
-     *
-     * @return void.
-     */
-    public function enqueue_scripts_styles()
-    {
-        parent::enqueue_scripts_styles();
-        do_action('AHEE__EE_Pdf_messenger__enqueue_scripts_styles');
-    }
-
-
-    /**
-     * _set_template_fields
-     * This sets up the fields that a messenger requires for the message to go out.
-     *
-     * @access  protected
-     * @return void
-     */
-    protected function _set_template_fields()
-    {
-        // any extra template fields that are NOT used by the messenger but will get used by a messenger field for shortcode replacement get added to the 'extra' key in an associated array indexed by the messenger field they relate to.  This is important for the Messages_admin to know what fields to display to the user.  Also, notice that the "values" are equal to the field type that messages admin will use to know what kind of field to display. The values ALSO have one index labeled "shortcode".  the values in that array indicate which ACTUAL SHORTCODE (i.e. [SHORTCODE]) is required in order for this extra field to be displayed.  If the required shortcode isn't part of the shortcodes array then the field is not needed and will not be displayed/parsed.
-        $this->_template_fields = array(
-            'subject' => array(
-                'input' => 'text',
-                'label' => esc_html__('Page Title', 'event_espresso'),
-                'type' => 'string',
-                'required' => true,
-                'validation' => true,
-                'css_class' => 'large-text',
-                'format' => '%s'
-            ),
-            'content' => '', // left empty b/c it is in the "extra array" but messenger still needs needs to know this is a field.
-            'extra' => array(
-                'content' => array(
-                    'main' => array(
-                        'input' => 'wp_editor',
-                        'label' => esc_html__('Main Content', 'event_espresso'),
-                        'type' => 'string',
-                        'required' => true,
-                        'validation' => true,
-                        'format' => '%s',
-                        'rows' => '15'
-                    ),
-                    'event_list' => array(
-                        'input' => 'wp_editor',
-                        'label' => '[EVENT_LIST]',
-                        'type' => 'string',
-                        'required' => false,
-                        'validation' => true,
-                        'format' => '%s',
-                        'rows' => '15',
-                        'shortcodes_required' => array('[EVENT_LIST]')
-                    ),
-                    'attendee_list' => array(
-                        'input' => 'textarea',
-                        'label' => '[ATTENDEE_LIST]',
-                        'type' => 'string',
-                        'required' => false,
-                        'validation' => true,
-                        'format' => '%s',
-                        'css_class' => 'large-text',
-                        'rows' => '5',
-                        'shortcodes_required' => array('[ATTENDEE_LIST]')
-                    ),
-                    'ticket_list' => array(
-                        'input' => 'textarea',
-                        'label' => '[TICKET_LIST]',
-                        'type' => 'string',
-                        'required' => false,
-                        'validation' => true,
-                        'format' => '%s',
-                        'css_class' => 'large-text',
-                        'rows' => '10',
-                        'shortcodes_required' => array('[TICKET_LIST]')
-                    ),
-                    'datetime_list' => array(
-                        'input' => 'textarea',
-                        'label' => '[DATETIME_LIST]',
-                        'type' => 'string',
-                        'required' => false,
-                        'validation' => true,
-                        'format' => '%s',
-                        'css_class' => 'large-text',
-                        'rows' => '10',
-                        'shortcodes_required' => array('[DATETIME_LIST]')
-                    )
-                )
-            )
-        );
-    }
-
-
-    /**
-     * @see definition of this method in parent
-     *
-     * @since 4.5.0
-     *
-     */
-    protected function _set_default_message_types()
-    {
-        // note currently PDF is only a secondary messenger so it never has any associated message types.
-        $this->_default_message_types = array();
-    }
-
-
-    /**
-     * @see definition of this method in parent
-     *
-     * @since 4.5.0
-     */
-    protected function _set_valid_message_types()
-    {
-        $this->_valid_message_types = array();
-    }
-
-
-    /**
-     * Generates html version of the message content and then sends it to the pdf generator.
-     *
-     *
-     * @since 4.5.0
-     *
-     * @return string.
-     */
-    protected function _send_message()
-    {
-        $this->_template_args = array(
-            'page_title' => $this->_subject,
-            'base_css' => $this->get_variation($this->_tmp_pack, $this->_incoming_message_type->name, true, 'base', $this->_variation),
-            'print_css' => $this->get_variation($this->_tmp_pack, $this->_incoming_message_type->name, true, 'print', $this->_variation),
-            'main_css' => $this->get_variation($this->_tmp_pack, $this->_incoming_message_type->name, true, 'main', $this->_variation),
-            'extra_css' => EE_LIBRARIES_URL . 'messages/defaults/default/variations/pdf_base_default.css',
-            'main_body' => apply_filters('FHEE__EE_Pdf_messenger___send_message__main_body', wpautop($this->_content), $this->_content)
-        );
-        $this->_deregister_wp_hooks();
-        add_action('wp_enqueue_scripts', array($this, 'enqueue_scripts_styles'));
-        $content = $this->_get_main_template();
+	/**
+	 * The following are the properties that this messenger requires for generating pdf
+	 */
+
+	/**
+	 * This is the pdf body generated by the template via the message type.
+	 *
+	 * @var string
+	 */
+	protected $_content;
+
+
+	/**
+	 * This is for the page title that gets displayed.  This will end up being the filename for the generated pdf.
+	 *
+	 * @var string
+	 */
+	protected $_subject;
+
+
+	/**
+	 * @return EE_Pdf_messenger
+	 */
+	public function __construct()
+	{
+		// set properties
+		$this->name = 'pdf';
+		$this->description = esc_html__('This messenger is used for generating a pdf version of the message.', 'event_espresso');
+		$this->label = array(
+			'singular' => esc_html__('PDF', 'event_espresso'),
+			'plural' => esc_html__('PDFs', 'event_espresso')
+		);
+		$this->activate_on_install = true;
+
+		parent::__construct();
+	}
+
+
+	/**
+	 * PDF Messenger desires execution immediately.
+	 * @see  parent::send_now() for documentation.
+	 * @since  4.9.0
+	 * @return bool
+	 */
+	public function send_now()
+	{
+		return true;
+	}
+
+
+	/**
+	 * HTML Messenger allows an empty to field.
+	 * @see parent::allow_empty_to_field() for documentation
+	 * @since  4.9.0
+	 * @return bool
+	 */
+	public function allow_empty_to_field()
+	{
+		return true;
+	}
+
+
+	/**
+	 * @see abstract declaration in EE_messenger for details.
+	 */
+	protected function _set_admin_pages()
+	{
+		$this->admin_registered_pages = array('events_edit' => false);
+	}
+
+
+	/**
+	 * @see abstract declaration in EE_messenger for details.
+	 */
+	protected function _set_valid_shortcodes()
+	{
+		$this->_valid_shortcodes = array();
+	}
+
+
+	/**
+	 * @see abstract declaration in EE_messenger for details.
+	 */
+	protected function _set_validator_config()
+	{
+		$this->_validator_config = array(
+			'subject' => array(
+				'shortcodes' => array('recipient_details', 'organization', 'event', 'ticket', 'venue', 'primary_registration_details', 'event_author', 'email', 'event_meta', 'recipient_list', 'transaction', 'datetime_list', 'datetime')
+			),
+			'content' => array(
+				'shortcodes' => array('recipient_details', 'organization', 'event', 'ticket', 'venue', 'primary_registration_details', 'event_author', 'email', 'event_meta', 'recipient_list', 'transaction', 'datetime_list', 'datetime')
+			),
+			'attendee_list' => array(
+				'shortcodes' => array('attendee', 'event_list', 'ticket_list'),
+				'required' => array('[ATTENDEE_LIST]')
+			),
+			'event_list' => array(
+				'shortcodes' => array('event', 'attendee_list', 'ticket_list', 'venue', 'datetime_list', 'attendee', 'primary_registration_details', 'primary_registration_list', 'event_author', 'recipient_details', 'recipient_list'),
+				'required' => array('[EVENT_LIST]')
+			),
+			'ticket_list' => array(
+				'shortcodes' => array('event_list', 'attendee_list', 'ticket', 'datetime_list', 'primary_registration_details', 'recipient_details'),
+				'required' => array('[TICKET_LIST]')
+			),
+			'datetime_list' => array(
+				'shortcodes' => array('datetime'),
+				'required' => array('[DATETIME_LIST]')
+			),
+		);
+	}
+
+
+	/**
+	 * Takes care of enqueuing any necessary scripts or styles for the page.  A do_action() so message types using this messenger can add their own js.
+	 *
+	 * @return void.
+	 */
+	public function enqueue_scripts_styles()
+	{
+		parent::enqueue_scripts_styles();
+		do_action('AHEE__EE_Pdf_messenger__enqueue_scripts_styles');
+	}
+
+
+	/**
+	 * _set_template_fields
+	 * This sets up the fields that a messenger requires for the message to go out.
+	 *
+	 * @access  protected
+	 * @return void
+	 */
+	protected function _set_template_fields()
+	{
+		// any extra template fields that are NOT used by the messenger but will get used by a messenger field for shortcode replacement get added to the 'extra' key in an associated array indexed by the messenger field they relate to.  This is important for the Messages_admin to know what fields to display to the user.  Also, notice that the "values" are equal to the field type that messages admin will use to know what kind of field to display. The values ALSO have one index labeled "shortcode".  the values in that array indicate which ACTUAL SHORTCODE (i.e. [SHORTCODE]) is required in order for this extra field to be displayed.  If the required shortcode isn't part of the shortcodes array then the field is not needed and will not be displayed/parsed.
+		$this->_template_fields = array(
+			'subject' => array(
+				'input' => 'text',
+				'label' => esc_html__('Page Title', 'event_espresso'),
+				'type' => 'string',
+				'required' => true,
+				'validation' => true,
+				'css_class' => 'large-text',
+				'format' => '%s'
+			),
+			'content' => '', // left empty b/c it is in the "extra array" but messenger still needs needs to know this is a field.
+			'extra' => array(
+				'content' => array(
+					'main' => array(
+						'input' => 'wp_editor',
+						'label' => esc_html__('Main Content', 'event_espresso'),
+						'type' => 'string',
+						'required' => true,
+						'validation' => true,
+						'format' => '%s',
+						'rows' => '15'
+					),
+					'event_list' => array(
+						'input' => 'wp_editor',
+						'label' => '[EVENT_LIST]',
+						'type' => 'string',
+						'required' => false,
+						'validation' => true,
+						'format' => '%s',
+						'rows' => '15',
+						'shortcodes_required' => array('[EVENT_LIST]')
+					),
+					'attendee_list' => array(
+						'input' => 'textarea',
+						'label' => '[ATTENDEE_LIST]',
+						'type' => 'string',
+						'required' => false,
+						'validation' => true,
+						'format' => '%s',
+						'css_class' => 'large-text',
+						'rows' => '5',
+						'shortcodes_required' => array('[ATTENDEE_LIST]')
+					),
+					'ticket_list' => array(
+						'input' => 'textarea',
+						'label' => '[TICKET_LIST]',
+						'type' => 'string',
+						'required' => false,
+						'validation' => true,
+						'format' => '%s',
+						'css_class' => 'large-text',
+						'rows' => '10',
+						'shortcodes_required' => array('[TICKET_LIST]')
+					),
+					'datetime_list' => array(
+						'input' => 'textarea',
+						'label' => '[DATETIME_LIST]',
+						'type' => 'string',
+						'required' => false,
+						'validation' => true,
+						'format' => '%s',
+						'css_class' => 'large-text',
+						'rows' => '10',
+						'shortcodes_required' => array('[DATETIME_LIST]')
+					)
+				)
+			)
+		);
+	}
+
+
+	/**
+	 * @see definition of this method in parent
+	 *
+	 * @since 4.5.0
+	 *
+	 */
+	protected function _set_default_message_types()
+	{
+		// note currently PDF is only a secondary messenger so it never has any associated message types.
+		$this->_default_message_types = array();
+	}
+
+
+	/**
+	 * @see definition of this method in parent
+	 *
+	 * @since 4.5.0
+	 */
+	protected function _set_valid_message_types()
+	{
+		$this->_valid_message_types = array();
+	}
+
+
+	/**
+	 * Generates html version of the message content and then sends it to the pdf generator.
+	 *
+	 *
+	 * @since 4.5.0
+	 *
+	 * @return string.
+	 */
+	protected function _send_message()
+	{
+		$this->_template_args = array(
+			'page_title' => $this->_subject,
+			'base_css' => $this->get_variation($this->_tmp_pack, $this->_incoming_message_type->name, true, 'base', $this->_variation),
+			'print_css' => $this->get_variation($this->_tmp_pack, $this->_incoming_message_type->name, true, 'print', $this->_variation),
+			'main_css' => $this->get_variation($this->_tmp_pack, $this->_incoming_message_type->name, true, 'main', $this->_variation),
+			'extra_css' => EE_LIBRARIES_URL . 'messages/defaults/default/variations/pdf_base_default.css',
+			'main_body' => apply_filters('FHEE__EE_Pdf_messenger___send_message__main_body', wpautop($this->_content), $this->_content)
+		);
+		$this->_deregister_wp_hooks();
+		add_action('wp_enqueue_scripts', array($this, 'enqueue_scripts_styles'));
+		$content = $this->_get_main_template();
 //      die( $content );
-        $this->_do_pdf($content);
-        exit(0);
-    }
-
-
-    /**
-     * The purpose of this function is to de register all actions hooked into wp_head and wp_footer so that it doesn't interfere with our templates.  If users want to add any custom styles or scripts they must use the AHEE__EE_Pdf_messenger__enqueue_scripts_styles hook.
-     *
-     * @since 4.5.0
-     *
-     * @return void
-     */
-    protected function _deregister_wp_hooks()
-    {
-        remove_all_actions('wp_head');
-        remove_all_actions('wp_footer');
-        remove_all_actions('wp_print_footer_scripts');
-        remove_all_actions('wp_enqueue_scripts');
-        global $wp_scripts, $wp_styles;
-        $wp_scripts = $wp_styles = array();
-
-        // just add back in wp_enqueue_scripts and wp_print_footer_scripts cause that's all we want to load.
-        add_action('wp_head', 'wp_enqueue_scripts');
-        add_action('wp_footer', 'wp_print_footer_scripts');
-        add_action('wp_print_footer_scripts', '_wp_footer_scripts');
-    }
-
-
-    /**
-     * Overwrite parent _get_main_template for pdf purposes.
-     *
-     * @since  4.5.0
-     *
-     * @param bool $preview
-     * @return string
-     */
-    protected function _get_main_template($preview = false)
-    {
-        $wrapper_template = $this->_tmp_pack->get_wrapper('html', 'main');
-        // add message type to template_args
-        $this->_template_args['message_type'] = $this->_incoming_message_type;
-        return EEH_Template::display_template($wrapper_template, $this->_template_args, true);
-    }
-
-
-    /**
-     * This takes care of loading the dompdf library and generating the actual pdf
-     *
-     * @param string $content This is the generated html content being converted into a pdf.
-     *
-     * @return void
-     */
-    protected function _do_pdf($content = '')
-    {
-        $invoice_name = $this->_subject;
-
-        // only load dompdf if nobody else has yet...
-        if (! class_exists('Dompdf\Dompdf')) {
-            require_once(EE_THIRD_PARTY . 'dompdf/src/Autoloader.php');
-            Dompdf\Autoloader::register();
-        }
-        $options = new Dompdf\Options();
-        $options->set('isRemoteEnabled', true);
-        $options->set('isJavascriptEnabled', false);
-        if (defined('DOMPDF_FONT_DIR')) {
-            $options->setFontDir(DOMPDF_FONT_DIR);
-            $options->setFontCache(DOMPDF_FONT_DIR);
-        }
-        // Allow changing the paper size.
-        if (defined('DOMPDF_DEFAULT_PAPER_SIZE')) {
-            $options->set('defaultPaperSize', DOMPDF_DEFAULT_PAPER_SIZE);
-        }
-        $dompdf = new Dompdf\Dompdf($options);
-        // Remove all spaces between HTML tags
-        $content = preg_replace('/>\s+</', '><', $content);
-        $dompdf->loadHtml($content);
-        $dompdf->render();
-        // forcing the browser to open a download dialog.
-        $dompdf->stream($invoice_name . ".pdf", array('Attachment' => true));
-    }
-
-
-    /**
-     * @return string
-     */
-    protected function _preview()
-    {
-        return $this->_send_message();
-    }
-
-
-    protected function _set_admin_settings_fields()
-    {
-    }
+		$this->_do_pdf($content);
+		exit(0);
+	}
+
+
+	/**
+	 * The purpose of this function is to de register all actions hooked into wp_head and wp_footer so that it doesn't interfere with our templates.  If users want to add any custom styles or scripts they must use the AHEE__EE_Pdf_messenger__enqueue_scripts_styles hook.
+	 *
+	 * @since 4.5.0
+	 *
+	 * @return void
+	 */
+	protected function _deregister_wp_hooks()
+	{
+		remove_all_actions('wp_head');
+		remove_all_actions('wp_footer');
+		remove_all_actions('wp_print_footer_scripts');
+		remove_all_actions('wp_enqueue_scripts');
+		global $wp_scripts, $wp_styles;
+		$wp_scripts = $wp_styles = array();
+
+		// just add back in wp_enqueue_scripts and wp_print_footer_scripts cause that's all we want to load.
+		add_action('wp_head', 'wp_enqueue_scripts');
+		add_action('wp_footer', 'wp_print_footer_scripts');
+		add_action('wp_print_footer_scripts', '_wp_footer_scripts');
+	}
+
+
+	/**
+	 * Overwrite parent _get_main_template for pdf purposes.
+	 *
+	 * @since  4.5.0
+	 *
+	 * @param bool $preview
+	 * @return string
+	 */
+	protected function _get_main_template($preview = false)
+	{
+		$wrapper_template = $this->_tmp_pack->get_wrapper('html', 'main');
+		// add message type to template_args
+		$this->_template_args['message_type'] = $this->_incoming_message_type;
+		return EEH_Template::display_template($wrapper_template, $this->_template_args, true);
+	}
+
+
+	/**
+	 * This takes care of loading the dompdf library and generating the actual pdf
+	 *
+	 * @param string $content This is the generated html content being converted into a pdf.
+	 *
+	 * @return void
+	 */
+	protected function _do_pdf($content = '')
+	{
+		$invoice_name = $this->_subject;
+
+		// only load dompdf if nobody else has yet...
+		if (! class_exists('Dompdf\Dompdf')) {
+			require_once(EE_THIRD_PARTY . 'dompdf/src/Autoloader.php');
+			Dompdf\Autoloader::register();
+		}
+		$options = new Dompdf\Options();
+		$options->set('isRemoteEnabled', true);
+		$options->set('isJavascriptEnabled', false);
+		if (defined('DOMPDF_FONT_DIR')) {
+			$options->setFontDir(DOMPDF_FONT_DIR);
+			$options->setFontCache(DOMPDF_FONT_DIR);
+		}
+		// Allow changing the paper size.
+		if (defined('DOMPDF_DEFAULT_PAPER_SIZE')) {
+			$options->set('defaultPaperSize', DOMPDF_DEFAULT_PAPER_SIZE);
+		}
+		$dompdf = new Dompdf\Dompdf($options);
+		// Remove all spaces between HTML tags
+		$content = preg_replace('/>\s+</', '><', $content);
+		$dompdf->loadHtml($content);
+		$dompdf->render();
+		// forcing the browser to open a download dialog.
+		$dompdf->stream($invoice_name . ".pdf", array('Attachment' => true));
+	}
+
+
+	/**
+	 * @return string
+	 */
+	protected function _preview()
+	{
+		return $this->_send_message();
+	}
+
+
+	protected function _set_admin_settings_fields()
+	{
+	}
 }

core/libraries/messages/EE_messenger.lib.php

Indentation +780 added lines, -780 removed lines

@@ -16,182 +16,182 @@ 
  */
 abstract class EE_messenger extends EE_Messages_Base
 {
-    /**
-     * This property holds the default message types associated with this messenger when it is activated. The values of the array must match a valid message type.
-     * This property gets set by the _set_default_message_types() method.
-     *
-     * @var array
-     */
-    protected $_default_message_types = array();
+	/**
+	 * This property holds the default message types associated with this messenger when it is activated. The values of the array must match a valid message type.
+	 * This property gets set by the _set_default_message_types() method.
+	 *
+	 * @var array
+	 */
+	protected $_default_message_types = array();
 
 
 
 
-    /**
-     * This property holds the message types that are valid for use with this messenger.
-     * It gets set by the _set_valid_message_types() method.
-     *
-     * @var array
-     */
-    protected $_valid_message_types = array();
+	/**
+	 * This property holds the message types that are valid for use with this messenger.
+	 * It gets set by the _set_valid_message_types() method.
+	 *
+	 * @var array
+	 */
+	protected $_valid_message_types = array();
 
 
 
-    /**
-     * Holds the configuration for the EE_Messages_Validator class to know how to validated the different fields. Note that the Validator will match each field here with the allowed shortcodes set in the "valid_shortcodes" array for the matched message type context.  So message types don't need to set a $_validator_config property.
-     *
-     * Remember, ALL fields must be declared in this array.  However, an empty value for the field means that the field will accept all valid shortcodes set for the given context in the message type (by default).
-     *
-     * Array should be in this format:
-     *
-     * array(
-     *  'field_name(i.e.to)' => array(
-     *      'shortcodes' => array('email'), //an array of shortcode groups (correspond to EE_Shortcodes library class) that are allowed in the field. Typically you can just include $this->_valid_shortcodes['field_name'] as the value here (because they will match).
-     *      'specific_shortcodes' => array( array('[EVENT_AUTHOR_EMAIL]' => esc_html__('Admin Email', 'event_espresso')), //if this index is present you can further restrict the field to ONLY specific shortcodes if an entire group isn't sufficient. Specific shortcodes need to be listed as an array with the index the shortcode and the value = the label.
-     *      'type' => 'email' //this is the field type and should match one of the validator types (see EE_Messages_Validator::validator() for all the possible types).  If not required you can just leave empty.,
-     *      'required' => array'[SHORTCODE]') //this is used to indicate the shortcodes that MUST be in the assembled array of shortcodes by the validator in order for this field to be included in validation.  Otherwise the validator will always assign shortcodes for this field (regardless of whether the field settings for the given messenger/message_type/context use the field or not.).. please note, this does NOT mean that the shortcodes listed here MUST be in the given field.
-     *  )
-     * )
-     *
-     * @var array
-     */
-    protected $_validator_config = array();
+	/**
+	 * Holds the configuration for the EE_Messages_Validator class to know how to validated the different fields. Note that the Validator will match each field here with the allowed shortcodes set in the "valid_shortcodes" array for the matched message type context.  So message types don't need to set a $_validator_config property.
+	 *
+	 * Remember, ALL fields must be declared in this array.  However, an empty value for the field means that the field will accept all valid shortcodes set for the given context in the message type (by default).
+	 *
+	 * Array should be in this format:
+	 *
+	 * array(
+	 *  'field_name(i.e.to)' => array(
+	 *      'shortcodes' => array('email'), //an array of shortcode groups (correspond to EE_Shortcodes library class) that are allowed in the field. Typically you can just include $this->_valid_shortcodes['field_name'] as the value here (because they will match).
+	 *      'specific_shortcodes' => array( array('[EVENT_AUTHOR_EMAIL]' => esc_html__('Admin Email', 'event_espresso')), //if this index is present you can further restrict the field to ONLY specific shortcodes if an entire group isn't sufficient. Specific shortcodes need to be listed as an array with the index the shortcode and the value = the label.
+	 *      'type' => 'email' //this is the field type and should match one of the validator types (see EE_Messages_Validator::validator() for all the possible types).  If not required you can just leave empty.,
+	 *      'required' => array'[SHORTCODE]') //this is used to indicate the shortcodes that MUST be in the assembled array of shortcodes by the validator in order for this field to be included in validation.  Otherwise the validator will always assign shortcodes for this field (regardless of whether the field settings for the given messenger/message_type/context use the field or not.).. please note, this does NOT mean that the shortcodes listed here MUST be in the given field.
+	 *  )
+	 * )
+	 *
+	 * @var array
+	 */
+	protected $_validator_config = array();
 
 
 
-    /**
-     * This will hold the EEM_message_templates model for interacting with the database and retrieving active templates for the messenger
-     * @var object
-     */
-    protected $_EEM_data;
+	/**
+	 * This will hold the EEM_message_templates model for interacting with the database and retrieving active templates for the messenger
+	 * @var object
+	 */
+	protected $_EEM_data;
 
 
 
-    /**
-     * this property just holds an array of the various template refs.
-     * @var array
-     */
-    protected $_template_fields = array();
+	/**
+	 * this property just holds an array of the various template refs.
+	 * @var array
+	 */
+	protected $_template_fields = array();
 
 
 
 
-    /**
-     * This holds an array of the arguments used in parsing a template for the sender.
-     * @var array
-     */
-    protected $_template_args = array();
+	/**
+	 * This holds an array of the arguments used in parsing a template for the sender.
+	 * @var array
+	 */
+	protected $_template_args = array();
 
 
 
 
 
 
-    /**
-     * This property will hold the configuration for any test settings fields that are required for the "test" button that is used to trigger an actual test of this messenger
-     *
-     * @protected
-     * @var array
-     */
-    protected $_test_settings_fields = array();
+	/**
+	 * This property will hold the configuration for any test settings fields that are required for the "test" button that is used to trigger an actual test of this messenger
+	 *
+	 * @protected
+	 * @var array
+	 */
+	protected $_test_settings_fields = array();
 
 
 
 
 
 
-    /**
-     * This will hold the EE_Messages_Template_Pack object when set on the messenger.  This is set via the validate and setup method which grabs the template pack from the incoming messages object.
-     *
-     * @since 4.5.0
-     *
-     * @var EE_Messages_Template_Pack
-     */
-    protected $_tmp_pack;
+	/**
+	 * This will hold the EE_Messages_Template_Pack object when set on the messenger.  This is set via the validate and setup method which grabs the template pack from the incoming messages object.
+	 *
+	 * @since 4.5.0
+	 *
+	 * @var EE_Messages_Template_Pack
+	 */
+	protected $_tmp_pack;
 
 
 
 
-    /**
-     * This will hold the variation to use when performing a send.  It is set via the validate and setup method which grabs the variation from the incoming messages object on the send method.
-     *
-     * @since 4.5.0
-     *
-     * @var string
-     */
-    protected $_variation;
+	/**
+	 * This will hold the variation to use when performing a send.  It is set via the validate and setup method which grabs the variation from the incoming messages object on the send method.
+	 *
+	 * @since 4.5.0
+	 *
+	 * @var string
+	 */
+	protected $_variation;
 
 
 
 
 
-    /**
-     * This property is a stdClass that holds labels for all the various supporting properties for this messenger.  These labels are set via the _set_supports_labels() method in children classes. Initially this will include the label for:
-     *
-     *  - template pack
-     *  - template variation
-     *
-     * @since 4.5.0
-     *
-     * @var stdClass
-     */
-    protected $_supports_labels;
+	/**
+	 * This property is a stdClass that holds labels for all the various supporting properties for this messenger.  These labels are set via the _set_supports_labels() method in children classes. Initially this will include the label for:
+	 *
+	 *  - template pack
+	 *  - template variation
+	 *
+	 * @since 4.5.0
+	 *
+	 * @var stdClass
+	 */
+	protected $_supports_labels;
 
 
 
 
 
-    /**
-     * This property is set when the send_message() method is called and holds the Message Type used to generate templates with this messenger for the messages.
-     *
-     * @var EE_message_type
-     */
-    protected $_incoming_message_type;
+	/**
+	 * This property is set when the send_message() method is called and holds the Message Type used to generate templates with this messenger for the messages.
+	 *
+	 * @var EE_message_type
+	 */
+	protected $_incoming_message_type;
 
 
 
-    /**
-     * This flag sets whether a messenger is activated by default  on installation (or reactivation) of EE core or not.
-     *
-     * @var bool
-     */
-    public $activate_on_install = false;
+	/**
+	 * This flag sets whether a messenger is activated by default  on installation (or reactivation) of EE core or not.
+	 *
+	 * @var bool
+	 */
+	public $activate_on_install = false;
 
 
 
 
 
-    public function __construct()
-    {
-        $this->_EEM_data = EEM_Message_Template_Group::instance();
-        $this->_messages_item_type = 'messenger';
+	public function __construct()
+	{
+		$this->_EEM_data = EEM_Message_Template_Group::instance();
+		$this->_messages_item_type = 'messenger';
 
-        parent::__construct();
+		parent::__construct();
 
-        $this->_set_test_settings_fields();
-        $this->_set_template_fields();
-        $this->_set_default_message_types();
-        $this->_set_valid_message_types();
-        $this->_set_validator_config();
+		$this->_set_test_settings_fields();
+		$this->_set_template_fields();
+		$this->_set_default_message_types();
+		$this->_set_valid_message_types();
+		$this->_set_validator_config();
 
 
-        $this->_supports_labels = new stdClass();
-        $this->_set_supports_labels();
-    }
+		$this->_supports_labels = new stdClass();
+		$this->_set_supports_labels();
+	}
 
 
 
 
 
-    /**
-     * _set_template_fields
-     * This sets up the fields that a messenger requires for the message to go out.
-     *
-     * @abstract
-     * @access  protected
-     * @return void
-     */
-    abstract protected function _set_template_fields();
+	/**
+	 * _set_template_fields
+	 * This sets up the fields that a messenger requires for the message to go out.
+	 *
+	 * @abstract
+	 * @access  protected
+	 * @return void
+	 */
+	abstract protected function _set_template_fields();
 
 
 
@@ -201,14 +201,14 @@ 
 
 
 
-    /**
-     * This method sets the _default_message_type property (see definition in docs attached to property)
-     *
-     * @abstract
-     * @access protected
-     * @return void
-     */
-    abstract protected function _set_default_message_types();
+	/**
+	 * This method sets the _default_message_type property (see definition in docs attached to property)
+	 *
+	 * @abstract
+	 * @access protected
+	 * @return void
+	 */
+	abstract protected function _set_default_message_types();
 
 
 
@@ -216,15 +216,15 @@ 
 
 
 
-    /**
-     * Sets the _valid_message_types property (see definition in cods attached to property)
-     *
-     * @since 4.5.0
-     *
-     * @abstract
-     * @return void
-     */
-    abstract protected function _set_valid_message_types();
+	/**
+	 * Sets the _valid_message_types property (see definition in cods attached to property)
+	 *
+	 * @since 4.5.0
+	 *
+	 * @abstract
+	 * @return void
+	 */
+	abstract protected function _set_valid_message_types();
 
 
 
@@ -232,171 +232,171 @@ 
 
 
 
-    /**
-     * Child classes must declare the $_validator_config property using this method.
-     * See comments for $_validator_config for details on what it is used for.
-     *
-     * NOTE:  messengers should set an array of valid shortcodes for ALL scenarios.  The corresponding validator class (validators/{messenger}) can be used to restrict only certain shortcodes per template so users cannot add certain shortcodes.
-     *
-     * @access protected
-     * @return void
-     */
-    abstract protected function _set_validator_config();
+	/**
+	 * Child classes must declare the $_validator_config property using this method.
+	 * See comments for $_validator_config for details on what it is used for.
+	 *
+	 * NOTE:  messengers should set an array of valid shortcodes for ALL scenarios.  The corresponding validator class (validators/{messenger}) can be used to restrict only certain shortcodes per template so users cannot add certain shortcodes.
+	 *
+	 * @access protected
+	 * @return void
+	 */
+	abstract protected function _set_validator_config();
 
 
 
 
 
 
-    /**
-     * We just deliver the messages don't kill us!!  This method will need to be modified by child classes for whatever action is taken to actually send a message.
-     *
-     * @return bool|WP_Error
-     * @throw \Exception
-     */
-    abstract protected function _send_message();
+	/**
+	 * We just deliver the messages don't kill us!!  This method will need to be modified by child classes for whatever action is taken to actually send a message.
+	 *
+	 * @return bool|WP_Error
+	 * @throw \Exception
+	 */
+	abstract protected function _send_message();
 
 
 
 
-    /**
-     * We give you pretty previews of the messages!
-     * @return string html body for message content.
-     */
-    abstract protected function _preview();
+	/**
+	 * We give you pretty previews of the messages!
+	 * @return string html body for message content.
+	 */
+	abstract protected function _preview();
 
 
 
 
-    /**
-     * Used by messengers (or preview) for enqueueing any scripts or styles need in message generation.
-     *
-     * @since 4.5.0
-     *
-     * @return void
-     */
-    public function enqueue_scripts_styles()
-    {
-        do_action('AHEE__EE_messenger__enqueue_scripts_styles');
-    }
+	/**
+	 * Used by messengers (or preview) for enqueueing any scripts or styles need in message generation.
+	 *
+	 * @since 4.5.0
+	 *
+	 * @return void
+	 */
+	public function enqueue_scripts_styles()
+	{
+		do_action('AHEE__EE_messenger__enqueue_scripts_styles');
+	}
 
 
 
 
 
-    /**
-     * This is used to indicate whether a messenger must be sent immediately or not.
-     * eg. The HTML messenger will override this to return true because it should be displayed in user's browser right
-     * away.  The PDF messenger is similar.
-     *
-     * This flag thus overrides any priorities that may be set on the message type used to generate the message.
-     *
-     * Default for this is false.  So children classes must override this if they want a message to be executed immediately.
-     *
-     * @since  4.9.0
-     * @return bool
-     */
-    public function send_now()
-    {
-        return false;
-    }
+	/**
+	 * This is used to indicate whether a messenger must be sent immediately or not.
+	 * eg. The HTML messenger will override this to return true because it should be displayed in user's browser right
+	 * away.  The PDF messenger is similar.
+	 *
+	 * This flag thus overrides any priorities that may be set on the message type used to generate the message.
+	 *
+	 * Default for this is false.  So children classes must override this if they want a message to be executed immediately.
+	 *
+	 * @since  4.9.0
+	 * @return bool
+	 */
+	public function send_now()
+	{
+		return false;
+	}
 
 
 
 
 
-    /**
-     * This is a way for a messenger to indicate whether it allows an empty to field or not.
-     * Note: If the generated message is a for a preview, this value is ignored.
-     * @since 4.9.0
-     * @return bool
-     */
-    public function allow_empty_to_field()
-    {
-        return false;
-    }
+	/**
+	 * This is a way for a messenger to indicate whether it allows an empty to field or not.
+	 * Note: If the generated message is a for a preview, this value is ignored.
+	 * @since 4.9.0
+	 * @return bool
+	 */
+	public function allow_empty_to_field()
+	{
+		return false;
+	}
 
 
 
 
 
-    /**
-     * Sets the defaults for the _supports_labels property.  Can be overridden by child classes.
-     * @see property definition for info on how its formatted.
-     *
-     * @since 4.5.0;
-     * @return void
-     */
-    protected function _set_supports_labels()
-    {
-        $this->_set_supports_labels_defaults();
-    }
+	/**
+	 * Sets the defaults for the _supports_labels property.  Can be overridden by child classes.
+	 * @see property definition for info on how its formatted.
+	 *
+	 * @since 4.5.0;
+	 * @return void
+	 */
+	protected function _set_supports_labels()
+	{
+		$this->_set_supports_labels_defaults();
+	}
 
 
 
 
 
-    /**
-     * Sets the defaults for the _supports_labels property.
-     *
-     * @since 4.5.0
-     *
-     * @return void
-     */
-    private function _set_supports_labels_defaults()
-    {
-        $this->_supports_labels->template_pack = esc_html__('Template Structure', 'event_espresso');
-        $this->_supports_labels->template_variation = esc_html__('Template Style', 'event_espresso');
-        $this->_supports_labels->template_pack_description = esc_html__('Template Structure options are bundled structural changes for templates.', 'event_espresso');
+	/**
+	 * Sets the defaults for the _supports_labels property.
+	 *
+	 * @since 4.5.0
+	 *
+	 * @return void
+	 */
+	private function _set_supports_labels_defaults()
+	{
+		$this->_supports_labels->template_pack = esc_html__('Template Structure', 'event_espresso');
+		$this->_supports_labels->template_variation = esc_html__('Template Style', 'event_espresso');
+		$this->_supports_labels->template_pack_description = esc_html__('Template Structure options are bundled structural changes for templates.', 'event_espresso');
 
-        $this->_supports_labels->template_variation_description = esc_html__('These are different styles to choose from for the selected template structure.  Usually these affect things like font style, color, borders etc.  In some cases the styles will also make minor layout changes.', 'event_espresso');
+		$this->_supports_labels->template_variation_description = esc_html__('These are different styles to choose from for the selected template structure.  Usually these affect things like font style, color, borders etc.  In some cases the styles will also make minor layout changes.', 'event_espresso');
 
-        $this->_supports_labels = apply_filters('FHEE__EE_messenger___set_supports_labels_defaults___supports_labels', $this->_supports_labels, $this);
-    }
+		$this->_supports_labels = apply_filters('FHEE__EE_messenger___set_supports_labels_defaults___supports_labels', $this->_supports_labels, $this);
+	}
 
 
 
 
 
-    /**
-     * This returns the _supports_labels property.
-     *
-     * @since 4.5.0
-     *
-     * @return stdClass
-     */
-    public function get_supports_labels()
-    {
-        if (empty($this->_supports_labels->template_pack) || empty($this->_supports_labels->template_variation)) {
-            $this->_set_supports_labels_defaults();
-        }
-        return apply_filters('FHEE__EE_messenger__get_supports_labels', $this->_supports_labels, $this);
-    }
+	/**
+	 * This returns the _supports_labels property.
+	 *
+	 * @since 4.5.0
+	 *
+	 * @return stdClass
+	 */
+	public function get_supports_labels()
+	{
+		if (empty($this->_supports_labels->template_pack) || empty($this->_supports_labels->template_variation)) {
+			$this->_set_supports_labels_defaults();
+		}
+		return apply_filters('FHEE__EE_messenger__get_supports_labels', $this->_supports_labels, $this);
+	}
 
 
 
 
-    /**
-     * Used to retrieve a variation (typically the path/url to a css file)
-     *
-     * @since 4.5.0
-     *
-     * @param EE_Messages_Template_Pack $pack   The template pack used for retrieving the variation.
-     * @param string                    $message_type_name The name property of the message type that we need the variation for.
-     * @param bool                      $url   Whether to return url (true) or path (false). Default is false.
-     * @param string                    $type What variation type to return. Default is 'main'.
-     * @param string               $variation What variation for the template pack
-     * @param bool             $skip_filters This allows messengers to add a filter for another messengers get_variation but call skip filters on the callback so there is no recursion on apply_filters.
-     *
-     * @return string                    path or url for the requested variation.
-     */
-    public function get_variation(EE_Messages_Template_Pack $pack, $message_type_name, $url = false, $type = 'main', $variation = 'default', $skip_filters = false)
-    {
-        $this->_tmp_pack = $pack;
-        $variation_path = apply_filters('EE_messenger__get_variation__variation', false, $pack, $this->name, $message_type_name, $url, $type, $variation, $skip_filters);
-        $variation_path = empty($variation_path) ? $this->_tmp_pack->get_variation($this->name, $message_type_name, $type, $variation, $url, '.css', $skip_filters) : $variation_path;
-        return $variation_path;
-    }
+	/**
+	 * Used to retrieve a variation (typically the path/url to a css file)
+	 *
+	 * @since 4.5.0
+	 *
+	 * @param EE_Messages_Template_Pack $pack   The template pack used for retrieving the variation.
+	 * @param string                    $message_type_name The name property of the message type that we need the variation for.
+	 * @param bool                      $url   Whether to return url (true) or path (false). Default is false.
+	 * @param string                    $type What variation type to return. Default is 'main'.
+	 * @param string               $variation What variation for the template pack
+	 * @param bool             $skip_filters This allows messengers to add a filter for another messengers get_variation but call skip filters on the callback so there is no recursion on apply_filters.
+	 *
+	 * @return string                    path or url for the requested variation.
+	 */
+	public function get_variation(EE_Messages_Template_Pack $pack, $message_type_name, $url = false, $type = 'main', $variation = 'default', $skip_filters = false)
+	{
+		$this->_tmp_pack = $pack;
+		$variation_path = apply_filters('EE_messenger__get_variation__variation', false, $pack, $this->name, $message_type_name, $url, $type, $variation, $skip_filters);
+		$variation_path = empty($variation_path) ? $this->_tmp_pack->get_variation($this->name, $message_type_name, $type, $variation, $url, '.css', $skip_filters) : $variation_path;
+		return $variation_path;
+	}
 
 
 
@@ -404,205 +404,205 @@ 
 
 
 
-    /**
-     * This just returns the default message types associated with this messenger when it is first activated.
-     *
-     * @access public
-     * @return array
-     */
-    public function get_default_message_types()
-    {
-        $class = get_class($this);
+	/**
+	 * This just returns the default message types associated with this messenger when it is first activated.
+	 *
+	 * @access public
+	 * @return array
+	 */
+	public function get_default_message_types()
+	{
+		$class = get_class($this);
 
-        // messenger specific filter
-        $default_types = apply_filters('FHEE__' . $class . '__get_default_message_types__default_types', $this->_default_message_types, $this);
+		// messenger specific filter
+		$default_types = apply_filters('FHEE__' . $class . '__get_default_message_types__default_types', $this->_default_message_types, $this);
 
-        // all messengers filter
-        $default_types = apply_filters('FHEE__EE_messenger__get_default_message_types__default_types', $default_types, $this);
-        return $default_types;
-    }
+		// all messengers filter
+		$default_types = apply_filters('FHEE__EE_messenger__get_default_message_types__default_types', $default_types, $this);
+		return $default_types;
+	}
 
 
 
 
-    /**
-     * Returns the valid message types associated with this messenger.
-     *
-     * @since 4.5.0
-     *
-     * @return array
-     */
-    public function get_valid_message_types()
-    {
-        $class = get_class($this);
-
-        // messenger specific filter
-        // messenger specific filter
-        $valid_types = apply_filters('FHEE__' . $class . '__get_valid_message_types__valid_types', $this->_valid_message_types, $this);
-
-        // all messengers filter
-        $valid_types = apply_filters('FHEE__EE_messenger__get_valid_message_types__valid_types', $valid_types, $this);
-        return $valid_types;
-    }
-
-
-
-
-
-    /**
-     * this is just used by the custom validators (EE_Messages_Validator classes) to modify the _validator_config for certain message_type/messenger combos where a context may only use certain shortcodes etc.
-     *
-     * @access public
-     * @param array $new_config Whatever is put in here will reset the _validator_config property
-     */
-    public function set_validator_config($new_config)
-    {
-        $this->_validator_config = $new_config;
-    }
-
-
-
-
-    /**
-     * This returns the _validator_config property
-     *
-     * @access public
-     * @return array
-     */
-    public function get_validator_config()
-    {
-        $class = get_class($this);
-
-        $config = apply_filters('FHEE__' . $class . '__get_validator_config', $this->_validator_config, $this);
-        $config = apply_filters('FHEE__EE_messenger__get_validator_config', $config, $this);
-        return $config;
-    }
-
-
-
-
-    /**
-     * this public method accepts a page slug (for an EE_admin page) and will return the response from the child class callback function if that page is registered via the `_admin_registered_page` property set by the child class.
-     *
-     * @param string $page the slug of the EE admin page
-     * @param array $message_types an array of active message type objects
-     * @param string $action the page action (to allow for more specific handling - i.e. edit vs. add pages)
-     * @param array $extra  This is just an extra argument that can be used to pass additional data for setting up page content.
-     * @access public
-     * @return string content for page
-     */
-    public function get_messenger_admin_page_content($page, $action = null, $extra = array(), $message_types = array())
-    {
-        return $this->_get_admin_page_content($page, $action, $extra, $message_types);
-    }
-
-
-
-    /**
-     * @param $message_types
-     * @param array $extra
-     * @return mixed|string
-     */
-    protected function _get_admin_content_events_edit($message_types, $extra)
-    {
-        // defaults
-        $template_args = array();
-        $selector_rows = '';
-
-        // we don't need message types here so we're just going to ignore. we do, however, expect the event id here. The event id is needed to provide a link to setup a custom template for this event.
-        $event_id = isset($extra['event']) ? $extra['event'] : null;
-
-        $template_wrapper_path = EE_LIBRARIES . 'messages/messenger/admin_templates/event_switcher_wrapper.template.php';
-        $template_row_path = EE_LIBRARIES . 'messages/messenger/admin_templates/event_switcher_row.template.php';
-
-        // array of template objects for global and custom (non-trashed) (but remember just for this messenger!)
-        $global_templates = EEM_Message_Template_Group::instance()->get_all(
-            array( array( 'MTP_messenger' => $this->name, 'MTP_is_global' => true, 'MTP_is_active' => true ) )
-        );
-        $templates_for_event = EEM_Message_Template_Group::instance()->get_all_custom_templates_by_event(
-            $event_id,
-            array(
-                'MTP_messenger' => $this->name,
-                'MTP_is_active' => true
-            )
-        );
-        $templates_for_event = !empty($templates_for_event) ? $templates_for_event : array();
-
-        $msg_type_status_map = [
-            'payment' => 'PAP',
-            'payment_refund' => 'PRF',
-            'payment_reminder' => 'PPN',
-            'registration' => 'RAP',
-            'not_approved_registration' => 'RNA',
-            'pending_approval' => 'RPP',
-            'payment_declined' => 'PDC',
-            'declined_registration' => 'RDC',
-            'cancelled_registration' => 'RCN',
-            'payment_failed' => 'PFL',
-            'payment_cancelled' => 'PCN',
-        ];
-
-        // so we need to setup the rows for the selectors and we use the global mtpgs (cause those will the active message template groups)
-        foreach ($global_templates as $mtpgID => $mtpg) {
-            if ($mtpg instanceof EE_Message_Template_Group) {
-                // verify this message type is supposed to show on this page
-                $mtp_obj = $mtpg->message_type_obj();
-                if (! $mtp_obj instanceof EE_message_type) {
-                    continue;
-                }
-                $mtp_obj->admin_registered_pages = (array) $mtp_obj->admin_registered_pages;
-                if (! in_array('events_edit', $mtp_obj->admin_registered_pages)) {
-                    continue;
-                }
-                $select_values = array();
-                $select_values[ $mtpgID ] = esc_html__('Global', 'event_espresso');
-                $default_value = array_key_exists($mtpgID, $templates_for_event) && ! $mtpg->get('MTP_is_override') ? $mtpgID : null;
-                // if the override has been set for the global template, then that means even if there are custom templates already created we ignore them because of the set override.
-                if (! $mtpg->get('MTP_is_override')) {
-                    // any custom templates for this message type?
-                    $custom_templates = EEM_Message_Template_Group::instance()->get_custom_message_template_by_m_and_mt($this->name, $mtpg->message_type());
-                    foreach ($custom_templates as $cmtpgID => $cmtpg) {
-                        $select_values[ $cmtpgID ] = $cmtpg->name();
-                        $default_value = array_key_exists($cmtpgID, $templates_for_event) ? $cmtpgID : $default_value;
-                    }
-                }
-                // if there is no $default_value then we set it as the global
-                $default_value = empty($default_value) ? $mtpgID : $default_value;
-                $c_config = $mtpg->contexts_config();
-                $edit_context = key(array_slice($c_config, -1));
-                $edit_url_query_args = [
-                    'page' => 'espresso_messages',
-                    'action' => 'edit_message_template',
-                    'id' => $default_value,
-                    'evt_id' => $event_id,
-                    'context' => $edit_context,
-                ];
-                $edit_url = EEH_URL::add_query_args_and_nonce($edit_url_query_args, admin_url('admin.php'));
-                $create_url_query_args = [
-                    'page' => 'espresso_messages',
-                    'action' => 'add_new_message_template',
-                    'GRP_ID' => $default_value,
-                    'message_type' => $mtpg->message_type(),
-                    'messenger' => $this->name
-                ];
-                $mt_slug = $mtpg->message_type();
-                $create_url = EEH_URL::add_query_args_and_nonce($create_url_query_args, admin_url('admin.php'));
-                $st_args['mtpgID'] = $mtpgID;
-                $st_args['mt_name'] = ucwords($mtp_obj->label['singular']);
-                $st_args['mt_slug'] = $mt_slug;
-                $st_args['messenger_slug'] = $this->name;
-                $st_args['status_code'] = $msg_type_status_map[ $mt_slug ] ?? '';
-                $st_args['selector'] = EEH_Form_Fields::select_input(
-                    'event_message_templates_relation[' . $mtpgID . ']',
-                    $select_values,
-                    $default_value,
-                    'data-messenger="' . $this->name . '" data-messagetype="' . $mt_slug . '"',
-                    'message-template-selector'
-                );
-                // note that  message template group that has override_all_custom set will remove the ability to set a custom message template based off of the global (and that also in turn overrides any other custom templates).
-                $st_args['create_button'] = $mtpg->get('MTP_is_override')
-                    ? ''
-                    : '
+	/**
+	 * Returns the valid message types associated with this messenger.
+	 *
+	 * @since 4.5.0
+	 *
+	 * @return array
+	 */
+	public function get_valid_message_types()
+	{
+		$class = get_class($this);
+
+		// messenger specific filter
+		// messenger specific filter
+		$valid_types = apply_filters('FHEE__' . $class . '__get_valid_message_types__valid_types', $this->_valid_message_types, $this);
+
+		// all messengers filter
+		$valid_types = apply_filters('FHEE__EE_messenger__get_valid_message_types__valid_types', $valid_types, $this);
+		return $valid_types;
+	}
+
+
+
+
+
+	/**
+	 * this is just used by the custom validators (EE_Messages_Validator classes) to modify the _validator_config for certain message_type/messenger combos where a context may only use certain shortcodes etc.
+	 *
+	 * @access public
+	 * @param array $new_config Whatever is put in here will reset the _validator_config property
+	 */
+	public function set_validator_config($new_config)
+	{
+		$this->_validator_config = $new_config;
+	}
+
+
+
+
+	/**
+	 * This returns the _validator_config property
+	 *
+	 * @access public
+	 * @return array
+	 */
+	public function get_validator_config()
+	{
+		$class = get_class($this);
+
+		$config = apply_filters('FHEE__' . $class . '__get_validator_config', $this->_validator_config, $this);
+		$config = apply_filters('FHEE__EE_messenger__get_validator_config', $config, $this);
+		return $config;
+	}
+
+
+
+
+	/**
+	 * this public method accepts a page slug (for an EE_admin page) and will return the response from the child class callback function if that page is registered via the `_admin_registered_page` property set by the child class.
+	 *
+	 * @param string $page the slug of the EE admin page
+	 * @param array $message_types an array of active message type objects
+	 * @param string $action the page action (to allow for more specific handling - i.e. edit vs. add pages)
+	 * @param array $extra  This is just an extra argument that can be used to pass additional data for setting up page content.
+	 * @access public
+	 * @return string content for page
+	 */
+	public function get_messenger_admin_page_content($page, $action = null, $extra = array(), $message_types = array())
+	{
+		return $this->_get_admin_page_content($page, $action, $extra, $message_types);
+	}
+
+
+
+	/**
+	 * @param $message_types
+	 * @param array $extra
+	 * @return mixed|string
+	 */
+	protected function _get_admin_content_events_edit($message_types, $extra)
+	{
+		// defaults
+		$template_args = array();
+		$selector_rows = '';
+
+		// we don't need message types here so we're just going to ignore. we do, however, expect the event id here. The event id is needed to provide a link to setup a custom template for this event.
+		$event_id = isset($extra['event']) ? $extra['event'] : null;
+
+		$template_wrapper_path = EE_LIBRARIES . 'messages/messenger/admin_templates/event_switcher_wrapper.template.php';
+		$template_row_path = EE_LIBRARIES . 'messages/messenger/admin_templates/event_switcher_row.template.php';
+
+		// array of template objects for global and custom (non-trashed) (but remember just for this messenger!)
+		$global_templates = EEM_Message_Template_Group::instance()->get_all(
+			array( array( 'MTP_messenger' => $this->name, 'MTP_is_global' => true, 'MTP_is_active' => true ) )
+		);
+		$templates_for_event = EEM_Message_Template_Group::instance()->get_all_custom_templates_by_event(
+			$event_id,
+			array(
+				'MTP_messenger' => $this->name,
+				'MTP_is_active' => true
+			)
+		);
+		$templates_for_event = !empty($templates_for_event) ? $templates_for_event : array();
+
+		$msg_type_status_map = [
+			'payment' => 'PAP',
+			'payment_refund' => 'PRF',
+			'payment_reminder' => 'PPN',
+			'registration' => 'RAP',
+			'not_approved_registration' => 'RNA',
+			'pending_approval' => 'RPP',
+			'payment_declined' => 'PDC',
+			'declined_registration' => 'RDC',
+			'cancelled_registration' => 'RCN',
+			'payment_failed' => 'PFL',
+			'payment_cancelled' => 'PCN',
+		];
+
+		// so we need to setup the rows for the selectors and we use the global mtpgs (cause those will the active message template groups)
+		foreach ($global_templates as $mtpgID => $mtpg) {
+			if ($mtpg instanceof EE_Message_Template_Group) {
+				// verify this message type is supposed to show on this page
+				$mtp_obj = $mtpg->message_type_obj();
+				if (! $mtp_obj instanceof EE_message_type) {
+					continue;
+				}
+				$mtp_obj->admin_registered_pages = (array) $mtp_obj->admin_registered_pages;
+				if (! in_array('events_edit', $mtp_obj->admin_registered_pages)) {
+					continue;
+				}
+				$select_values = array();
+				$select_values[ $mtpgID ] = esc_html__('Global', 'event_espresso');
+				$default_value = array_key_exists($mtpgID, $templates_for_event) && ! $mtpg->get('MTP_is_override') ? $mtpgID : null;
+				// if the override has been set for the global template, then that means even if there are custom templates already created we ignore them because of the set override.
+				if (! $mtpg->get('MTP_is_override')) {
+					// any custom templates for this message type?
+					$custom_templates = EEM_Message_Template_Group::instance()->get_custom_message_template_by_m_and_mt($this->name, $mtpg->message_type());
+					foreach ($custom_templates as $cmtpgID => $cmtpg) {
+						$select_values[ $cmtpgID ] = $cmtpg->name();
+						$default_value = array_key_exists($cmtpgID, $templates_for_event) ? $cmtpgID : $default_value;
+					}
+				}
+				// if there is no $default_value then we set it as the global
+				$default_value = empty($default_value) ? $mtpgID : $default_value;
+				$c_config = $mtpg->contexts_config();
+				$edit_context = key(array_slice($c_config, -1));
+				$edit_url_query_args = [
+					'page' => 'espresso_messages',
+					'action' => 'edit_message_template',
+					'id' => $default_value,
+					'evt_id' => $event_id,
+					'context' => $edit_context,
+				];
+				$edit_url = EEH_URL::add_query_args_and_nonce($edit_url_query_args, admin_url('admin.php'));
+				$create_url_query_args = [
+					'page' => 'espresso_messages',
+					'action' => 'add_new_message_template',
+					'GRP_ID' => $default_value,
+					'message_type' => $mtpg->message_type(),
+					'messenger' => $this->name
+				];
+				$mt_slug = $mtpg->message_type();
+				$create_url = EEH_URL::add_query_args_and_nonce($create_url_query_args, admin_url('admin.php'));
+				$st_args['mtpgID'] = $mtpgID;
+				$st_args['mt_name'] = ucwords($mtp_obj->label['singular']);
+				$st_args['mt_slug'] = $mt_slug;
+				$st_args['messenger_slug'] = $this->name;
+				$st_args['status_code'] = $msg_type_status_map[ $mt_slug ] ?? '';
+				$st_args['selector'] = EEH_Form_Fields::select_input(
+					'event_message_templates_relation[' . $mtpgID . ']',
+					$select_values,
+					$default_value,
+					'data-messenger="' . $this->name . '" data-messagetype="' . $mt_slug . '"',
+					'message-template-selector'
+				);
+				// note that  message template group that has override_all_custom set will remove the ability to set a custom message template based off of the global (and that also in turn overrides any other custom templates).
+				$st_args['create_button'] = $mtpg->get('MTP_is_override')
+					? ''
+					: '
                     <a data-messenger="' . $this->name . '"
                        data-messagetype="' . $mt_slug . '"
                        data-grpid="' . $default_value . '"
@@ -612,18 +612,18 @@ 
                     >
                         ' . esc_html__('Create New Custom', 'event_espresso') . '
                     </a>';
-                $st_args['create_button'] = EE_Registry::instance()->CAP->current_user_can(
-                    'ee_edit_messages',
-                    'espresso_messages_add_new_message_template'
-                )
-                    ? $st_args['create_button']
-                    : '';
-                $st_args['edit_button']   = EE_Registry::instance()->CAP->current_user_can(
-                    'ee_edit_message',
-                    'espresso_messages_edit_message_template',
-                    $mtpgID
-                )
-                    ? '
+				$st_args['create_button'] = EE_Registry::instance()->CAP->current_user_can(
+					'ee_edit_messages',
+					'espresso_messages_add_new_message_template'
+				)
+					? $st_args['create_button']
+					: '';
+				$st_args['edit_button']   = EE_Registry::instance()->CAP->current_user_can(
+					'ee_edit_message',
+					'espresso_messages_edit_message_template',
+					$mtpgID
+				)
+					? '
                     <a data-messagetype="' . $mt_slug . '"
                        data-grpid="' . $default_value . '"
                        target="_blank"
@@ -632,326 +632,326 @@ 
                     >
                         ' . esc_html__('Edit', 'event_espresso') . '
                     </a>'
-                    : '';
-                $selector_rows .= EEH_Template::display_template($template_row_path, $st_args, true);
-            }
-        }
-
-        // if no selectors present then get out.
-        if (empty($selector_rows)) {
-            return '';
-        }
-
-        $template_args['selector_rows'] = $selector_rows;
-        return EEH_Template::display_template($template_wrapper_path, $template_args, true);
-    }
-
-
-
-
-
-
-    /**
-     * returns $this->_template_fields,
-     * filtered first by child class specific filter named something like
-     * FHEE__EE_Email_messenger__get_template_fields,
-     * followed by global FHEE__EE_messenger__get_template_fields filter
-     *
-     * @return array
-     */
-    public function get_template_fields(): array
-    {
-        return (array) apply_filters(
-            'FHEE__EE_messenger__get_template_fields',
-            apply_filters('FHEE__' . get_class($this) . '__get_template_fields', $this->_template_fields, $this),
-            $this
-        );
-    }
-
-
-
-
-    /** SETUP METHODS **/
-    /**
-     * The following method doesn't NEED to be used by child classes but might be modified by the specific messenger
-     * @param string $item
-     * @param mixed $value
-     */
-    protected function _set_template_value($item, $value)
-    {
-        if (array_key_exists($item, $this->_template_fields)) {
-            $prop = '_' . $item;
-            $this->{$prop} = $value;
-        }
-    }
-
-    /**
-     * Sets up the message for sending.
-     *
-     * @param  EE_message $message the message object that contains details about the message.
-     * @param EE_message_type $message_type The message type object used in combination with this messenger to generate the provided message.
-     *
-     * @return bool Very important that all messengers return bool for successful send or not.  Error messages can be
-     *              added to EE_Error.
-     *              true = message sent successfully
-     *              false = message not sent but can be retried (i.e. the failure might be just due to communication issues at the time of send).
-     *              Throwing a SendMessageException means the message failed sending and cannot be retried.
-     *
-     * @throws SendMessageException
-     */
-    final public function send_message($message, EE_message_type $message_type)
-    {
-        try {
-            $this->_validate_and_setup($message);
-            $this->_incoming_message_type = $message_type;
-            $response = $this->_send_message();
-            if ($response instanceof WP_Error) {
-                EE_Error::add_error($response->get_error_message(), __FILE__, __FUNCTION__, __LINE__);
-                $response = false;
-            }
-        } catch (\Exception $e) {
-            // convert to an instance of SendMessageException
-            throw new SendMessageException($e->getMessage());
-        }
-        return $response;
-    }
-
-
-
-    /**
-     * Sets up and returns message preview
-     * @param  EE_Message $message incoming message object
-     * @param EE_message_type $message_type This is whatever message type was used in combination with this messenger to generate the message.
-     * @param  bool   $send    true we will actually use the _send method (for test sends). FALSE we just return preview
-     * @return string          return the message html content
-     */
-    public function get_preview(EE_Message $message, EE_message_type $message_type, $send = false)
-    {
-        $this->_validate_and_setup($message);
-
-        $this->_incoming_message_type = $message_type;
-
-        if ($send) {
-            // are we overriding any existing template fields?
-            $settings = apply_filters(
-                'FHEE__EE_messenger__get_preview__messenger_test_settings',
-                $this->get_existing_test_settings(),
-                $this,
-                $send,
-                $message,
-                $message_type
-            );
-            if (! empty($settings)) {
-                foreach ($settings as $field => $value) {
-                    $this->_set_template_value($field, $value);
-                }
-            }
-        }
-
-        // enqueue preview js so that any links/buttons on the page are disabled.
-        if (! $send) {
-            // the below may seem like duplication.  However, typically if a messenger enqueues scripts/styles,
-            // it deregisters all existing wp scripts and styles first.  So the second hook ensures our previewer still gets setup.
-            add_action('admin_enqueue_scripts', array( $this, 'add_preview_script' ), 10);
-            add_action('wp_enqueue_scripts', array( $this, 'add_preview_script' ), 10);
-            add_action('AHEE__EE_messenger__enqueue_scripts_styles', array( $this, 'add_preview_script' ), 10);
-        }
-
-        return $send ? $this->_send_message() : $this->_preview();
-    }
-
-
-
-
-    /**
-     * Callback for enqueue_scripts so that we setup the preview script for all previews.
-     *
-     * @since 4.5.0
-     *
-     * @return void
-     */
-    public function add_preview_script()
-    {
-        // error message
-        EE_Registry::$i18n_js_strings['links_disabled'] = wp_strip_all_tags(
-            __('All the links on this page have been disabled because this is a generated preview message for the purpose of ensuring layout, style, and content setup.  To test generated links, you must trigger an actual message notification.', 'event_espresso')
-        );
-        wp_register_script('ee-messages-preview-js', EE_LIBRARIES_URL . 'messages/messenger/assets/js/ee-messages-preview.js', array( 'jquery' ), EVENT_ESPRESSO_VERSION, true);
-        wp_localize_script('ee-messages-preview-js', 'eei18n', EE_Registry::$i18n_js_strings);
-        wp_enqueue_script('ee-messages-preview-js');
-    }
-
-
-
-
-    /**
-     * simply validates the incoming message object and then sets up the properties for the messenger
-     * @param  EE_Message $message
-     * @throws EE_Error
-     */
-    protected function _validate_and_setup(EE_Message $message)
-    {
-        $template_pack = $message->get_template_pack();
-        $variation = $message->get_template_pack_variation();
-
-        // verify we have the required template pack value on the $message object.
-        if (! $template_pack instanceof EE_Messages_Template_Pack) {
-            throw new EE_Error(esc_html__('Incoming $message object must have an EE_Messages_Template_Pack object available.', 'event_espresso'));
-        }
-
-        $this->_tmp_pack = $template_pack;
-
-        $this->_variation = $variation ? $variation : 'default';
-
-        $template_fields = $this->get_template_fields();
-
-        foreach ($template_fields as $template => $value) {
-            if ($template !== 'extra') {
-                $column_value = $message->get_field_or_extra_meta('MSG_' . $template);
-                $message_template_value = $column_value ? $column_value : null;
-                $this->_set_template_value($template, $message_template_value);
-            }
-        }
-    }
-
-
-
-    /**
-     * Utility method for child classes to get the contents of a template file and return
-     *
-     * We're assuming the child messenger class has already setup template args!
-     * @param  bool $preview if true we use the preview wrapper otherwise we use main wrapper.
-     * @return string
-     * @throws \EE_Error
-     */
-    protected function _get_main_template($preview = false)
-    {
-        $type = $preview ? 'preview' : 'main';
-
-        $wrapper_template = $this->_tmp_pack->get_wrapper($this->name, $type);
-
-        // check file exists and is readable
-        if (!is_readable($wrapper_template)) {
-            throw new EE_Error(sprintf(esc_html__('Unable to access the template file for the %s messenger main content wrapper.  The location being attempted is %s.', 'event_espresso'), ucwords($this->label['singular']), $wrapper_template));
-        }
-
-        // add message type to template args
-        $this->_template_args['message_type'] = $this->_incoming_message_type;
-
-        return EEH_Template::display_template($wrapper_template, $this->_template_args, true);
-    }
-
-
-
-    /**
-     * set the _test_settings_fields property
-     *
-     * @access protected
-     * @return void
-     */
-    protected function _set_test_settings_fields()
-    {
-        $this->_test_settings_fields = array();
-    }
-
-
-
-    /**
-     * return the _test_settings_fields property
-     * @return array
-     */
-    public function get_test_settings_fields()
-    {
-        return $this->_test_settings_fields;
-    }
-
-
-
-
-    /**
-     * This just returns any existing test settings that might be saved in the database
-     *
-     * @access public
-     * @return array
-     */
-    public function get_existing_test_settings()
-    {
-        /** @var EE_Message_Resource_Manager $Message_Resource_Manager */
-        $Message_Resource_Manager = EE_Registry::instance()->load_lib('Message_Resource_Manager');
-        $settings = $Message_Resource_Manager->get_active_messengers_option();
-        return isset($settings[ $this->name ]['test_settings']) ? $settings[ $this->name ]['test_settings'] : array();
-    }
-
-
-
-    /**
-     * All this does is set the existing test settings (in the db) for the messenger
-     *
-     * @access public
-     * @param $settings
-     * @return bool success/fail
-     */
-    public function set_existing_test_settings($settings)
-    {
-        /** @var EE_Message_Resource_Manager $Message_Resource_Manager */
-        $Message_Resource_Manager = EE_Registry::instance()->load_lib('Message_Resource_Manager');
-        $existing = $Message_Resource_Manager->get_active_messengers_option();
-        $existing[ $this->name ]['test_settings'] = $settings;
-        return $Message_Resource_Manager->update_active_messengers_option($existing);
-    }
-
-
-
-    /**
-     * This just returns the field label for a given field setup in the _template_fields property.
-     *
-     * @since   4.3.0
-     *
-     * @param string $field The field to retrieve the label for
-     * @return string             The label
-     */
-    public function get_field_label($field)
-    {
-        // first let's see if the field requests is in the top level array.
-        if (isset($this->_template_fields[ $field ]) && !empty($this->_template_fields[ $field ]['label'])) {
-            return $this->_template[ $field ]['label'];
-        }
-
-        // nope so let's look in the extra array to see if it's there HOWEVER if the field exists as a top level index in the extra array then we know the label is in the 'main' index.
-        if (isset($this->_template_fields['extra']) && !empty($this->_template_fields['extra'][ $field ]) && !empty($this->_template_fields['extra'][ $field ]['main']['label'])) {
-            return $this->_template_fields['extra'][ $field ]['main']['label'];
-        }
-
-        // now it's possible this field may just be existing in any of the extra array items.
-        if (!empty($this->_template_fields['extra']) && is_array($this->_template_fields['extra'])) {
-            foreach ($this->_template_fields['extra'] as $main_field => $subfields) {
-                if (!is_array($subfields)) {
-                    continue;
-                }
-                if (isset($subfields[ $field ]) && !empty($subfields[ $field ]['label'])) {
-                    return $subfields[ $field ]['label'];
-                }
-            }
-        }
-
-        // if we made it here then there's no label set so let's just return the $field.
-        return $field;
-    }
-
-
-
-
-    /**
-     * This is a method called from EE_messages when this messenger is a generating messenger and the sending messenger is a different messenger.  Child messengers can set hooks for the sending messenger to callback on if necessary (i.e. swap out css files or something else).
-     *
-     * @since 4.5.0
-     *
-     * @param string $sending_messenger_name the name of the sending messenger so we only set the hooks needed.
-     *
-     * @return void
-     */
-    public function do_secondary_messenger_hooks($sending_messenger_name)
-    {
-        return;
-    }
+					: '';
+				$selector_rows .= EEH_Template::display_template($template_row_path, $st_args, true);
+			}
+		}
+
+		// if no selectors present then get out.
+		if (empty($selector_rows)) {
+			return '';
+		}
+
+		$template_args['selector_rows'] = $selector_rows;
+		return EEH_Template::display_template($template_wrapper_path, $template_args, true);
+	}
+
+
+
+
+
+
+	/**
+	 * returns $this->_template_fields,
+	 * filtered first by child class specific filter named something like
+	 * FHEE__EE_Email_messenger__get_template_fields,
+	 * followed by global FHEE__EE_messenger__get_template_fields filter
+	 *
+	 * @return array
+	 */
+	public function get_template_fields(): array
+	{
+		return (array) apply_filters(
+			'FHEE__EE_messenger__get_template_fields',
+			apply_filters('FHEE__' . get_class($this) . '__get_template_fields', $this->_template_fields, $this),
+			$this
+		);
+	}
+
+
+
+
+	/** SETUP METHODS **/
+	/**
+	 * The following method doesn't NEED to be used by child classes but might be modified by the specific messenger
+	 * @param string $item
+	 * @param mixed $value
+	 */
+	protected function _set_template_value($item, $value)
+	{
+		if (array_key_exists($item, $this->_template_fields)) {
+			$prop = '_' . $item;
+			$this->{$prop} = $value;
+		}
+	}
+
+	/**
+	 * Sets up the message for sending.
+	 *
+	 * @param  EE_message $message the message object that contains details about the message.
+	 * @param EE_message_type $message_type The message type object used in combination with this messenger to generate the provided message.
+	 *
+	 * @return bool Very important that all messengers return bool for successful send or not.  Error messages can be
+	 *              added to EE_Error.
+	 *              true = message sent successfully
+	 *              false = message not sent but can be retried (i.e. the failure might be just due to communication issues at the time of send).
+	 *              Throwing a SendMessageException means the message failed sending and cannot be retried.
+	 *
+	 * @throws SendMessageException
+	 */
+	final public function send_message($message, EE_message_type $message_type)
+	{
+		try {
+			$this->_validate_and_setup($message);
+			$this->_incoming_message_type = $message_type;
+			$response = $this->_send_message();
+			if ($response instanceof WP_Error) {
+				EE_Error::add_error($response->get_error_message(), __FILE__, __FUNCTION__, __LINE__);
+				$response = false;
+			}
+		} catch (\Exception $e) {
+			// convert to an instance of SendMessageException
+			throw new SendMessageException($e->getMessage());
+		}
+		return $response;
+	}
+
+
+
+	/**
+	 * Sets up and returns message preview
+	 * @param  EE_Message $message incoming message object
+	 * @param EE_message_type $message_type This is whatever message type was used in combination with this messenger to generate the message.
+	 * @param  bool   $send    true we will actually use the _send method (for test sends). FALSE we just return preview
+	 * @return string          return the message html content
+	 */
+	public function get_preview(EE_Message $message, EE_message_type $message_type, $send = false)
+	{
+		$this->_validate_and_setup($message);
+
+		$this->_incoming_message_type = $message_type;
+
+		if ($send) {
+			// are we overriding any existing template fields?
+			$settings = apply_filters(
+				'FHEE__EE_messenger__get_preview__messenger_test_settings',
+				$this->get_existing_test_settings(),
+				$this,
+				$send,
+				$message,
+				$message_type
+			);
+			if (! empty($settings)) {
+				foreach ($settings as $field => $value) {
+					$this->_set_template_value($field, $value);
+				}
+			}
+		}
+
+		// enqueue preview js so that any links/buttons on the page are disabled.
+		if (! $send) {
+			// the below may seem like duplication.  However, typically if a messenger enqueues scripts/styles,
+			// it deregisters all existing wp scripts and styles first.  So the second hook ensures our previewer still gets setup.
+			add_action('admin_enqueue_scripts', array( $this, 'add_preview_script' ), 10);
+			add_action('wp_enqueue_scripts', array( $this, 'add_preview_script' ), 10);
+			add_action('AHEE__EE_messenger__enqueue_scripts_styles', array( $this, 'add_preview_script' ), 10);
+		}
+
+		return $send ? $this->_send_message() : $this->_preview();
+	}
+
+
+
+
+	/**
+	 * Callback for enqueue_scripts so that we setup the preview script for all previews.
+	 *
+	 * @since 4.5.0
+	 *
+	 * @return void
+	 */
+	public function add_preview_script()
+	{
+		// error message
+		EE_Registry::$i18n_js_strings['links_disabled'] = wp_strip_all_tags(
+			__('All the links on this page have been disabled because this is a generated preview message for the purpose of ensuring layout, style, and content setup.  To test generated links, you must trigger an actual message notification.', 'event_espresso')
+		);
+		wp_register_script('ee-messages-preview-js', EE_LIBRARIES_URL . 'messages/messenger/assets/js/ee-messages-preview.js', array( 'jquery' ), EVENT_ESPRESSO_VERSION, true);
+		wp_localize_script('ee-messages-preview-js', 'eei18n', EE_Registry::$i18n_js_strings);
+		wp_enqueue_script('ee-messages-preview-js');
+	}
+
+
+
+
+	/**
+	 * simply validates the incoming message object and then sets up the properties for the messenger
+	 * @param  EE_Message $message
+	 * @throws EE_Error
+	 */
+	protected function _validate_and_setup(EE_Message $message)
+	{
+		$template_pack = $message->get_template_pack();
+		$variation = $message->get_template_pack_variation();
+
+		// verify we have the required template pack value on the $message object.
+		if (! $template_pack instanceof EE_Messages_Template_Pack) {
+			throw new EE_Error(esc_html__('Incoming $message object must have an EE_Messages_Template_Pack object available.', 'event_espresso'));
+		}
+
+		$this->_tmp_pack = $template_pack;
+
+		$this->_variation = $variation ? $variation : 'default';
+
+		$template_fields = $this->get_template_fields();
+
+		foreach ($template_fields as $template => $value) {
+			if ($template !== 'extra') {
+				$column_value = $message->get_field_or_extra_meta('MSG_' . $template);
+				$message_template_value = $column_value ? $column_value : null;
+				$this->_set_template_value($template, $message_template_value);
+			}
+		}
+	}
+
+
+
+	/**
+	 * Utility method for child classes to get the contents of a template file and return
+	 *
+	 * We're assuming the child messenger class has already setup template args!
+	 * @param  bool $preview if true we use the preview wrapper otherwise we use main wrapper.
+	 * @return string
+	 * @throws \EE_Error
+	 */
+	protected function _get_main_template($preview = false)
+	{
+		$type = $preview ? 'preview' : 'main';
+
+		$wrapper_template = $this->_tmp_pack->get_wrapper($this->name, $type);
+
+		// check file exists and is readable
+		if (!is_readable($wrapper_template)) {
+			throw new EE_Error(sprintf(esc_html__('Unable to access the template file for the %s messenger main content wrapper.  The location being attempted is %s.', 'event_espresso'), ucwords($this->label['singular']), $wrapper_template));
+		}
+
+		// add message type to template args
+		$this->_template_args['message_type'] = $this->_incoming_message_type;
+
+		return EEH_Template::display_template($wrapper_template, $this->_template_args, true);
+	}
+
+
+
+	/**
+	 * set the _test_settings_fields property
+	 *
+	 * @access protected
+	 * @return void
+	 */
+	protected function _set_test_settings_fields()
+	{
+		$this->_test_settings_fields = array();
+	}
+
+
+
+	/**
+	 * return the _test_settings_fields property
+	 * @return array
+	 */
+	public function get_test_settings_fields()
+	{
+		return $this->_test_settings_fields;
+	}
+
+
+
+
+	/**
+	 * This just returns any existing test settings that might be saved in the database
+	 *
+	 * @access public
+	 * @return array
+	 */
+	public function get_existing_test_settings()
+	{
+		/** @var EE_Message_Resource_Manager $Message_Resource_Manager */
+		$Message_Resource_Manager = EE_Registry::instance()->load_lib('Message_Resource_Manager');
+		$settings = $Message_Resource_Manager->get_active_messengers_option();
+		return isset($settings[ $this->name ]['test_settings']) ? $settings[ $this->name ]['test_settings'] : array();
+	}
+
+
+
+	/**
+	 * All this does is set the existing test settings (in the db) for the messenger
+	 *
+	 * @access public
+	 * @param $settings
+	 * @return bool success/fail
+	 */
+	public function set_existing_test_settings($settings)
+	{
+		/** @var EE_Message_Resource_Manager $Message_Resource_Manager */
+		$Message_Resource_Manager = EE_Registry::instance()->load_lib('Message_Resource_Manager');
+		$existing = $Message_Resource_Manager->get_active_messengers_option();
+		$existing[ $this->name ]['test_settings'] = $settings;
+		return $Message_Resource_Manager->update_active_messengers_option($existing);
+	}
+
+
+
+	/**
+	 * This just returns the field label for a given field setup in the _template_fields property.
+	 *
+	 * @since   4.3.0
+	 *
+	 * @param string $field The field to retrieve the label for
+	 * @return string             The label
+	 */
+	public function get_field_label($field)
+	{
+		// first let's see if the field requests is in the top level array.
+		if (isset($this->_template_fields[ $field ]) && !empty($this->_template_fields[ $field ]['label'])) {
+			return $this->_template[ $field ]['label'];
+		}
+
+		// nope so let's look in the extra array to see if it's there HOWEVER if the field exists as a top level index in the extra array then we know the label is in the 'main' index.
+		if (isset($this->_template_fields['extra']) && !empty($this->_template_fields['extra'][ $field ]) && !empty($this->_template_fields['extra'][ $field ]['main']['label'])) {
+			return $this->_template_fields['extra'][ $field ]['main']['label'];
+		}
+
+		// now it's possible this field may just be existing in any of the extra array items.
+		if (!empty($this->_template_fields['extra']) && is_array($this->_template_fields['extra'])) {
+			foreach ($this->_template_fields['extra'] as $main_field => $subfields) {
+				if (!is_array($subfields)) {
+					continue;
+				}
+				if (isset($subfields[ $field ]) && !empty($subfields[ $field ]['label'])) {
+					return $subfields[ $field ]['label'];
+				}
+			}
+		}
+
+		// if we made it here then there's no label set so let's just return the $field.
+		return $field;
+	}
+
+
+
+
+	/**
+	 * This is a method called from EE_messages when this messenger is a generating messenger and the sending messenger is a different messenger.  Child messengers can set hooks for the sending messenger to callback on if necessary (i.e. swap out css files or something else).
+	 *
+	 * @since 4.5.0
+	 *
+	 * @param string $sending_messenger_name the name of the sending messenger so we only set the hooks needed.
+	 *
+	 * @return void
+	 */
+	public function do_secondary_messenger_hooks($sending_messenger_name)
+	{
+		return;
+	}
 }

Spacing +46 added lines, -46 removed lines

@@ -415,7 +415,7 @@ 
         $class = get_class($this);
 
         // messenger specific filter
-        $default_types = apply_filters('FHEE__' . $class . '__get_default_message_types__default_types', $this->_default_message_types, $this);
+        $default_types = apply_filters('FHEE__'.$class.'__get_default_message_types__default_types', $this->_default_message_types, $this);
 
         // all messengers filter
         $default_types = apply_filters('FHEE__EE_messenger__get_default_message_types__default_types', $default_types, $this);
@@ -438,7 +438,7 @@ 
 
         // messenger specific filter
         // messenger specific filter
-        $valid_types = apply_filters('FHEE__' . $class . '__get_valid_message_types__valid_types', $this->_valid_message_types, $this);
+        $valid_types = apply_filters('FHEE__'.$class.'__get_valid_message_types__valid_types', $this->_valid_message_types, $this);
 
         // all messengers filter
         $valid_types = apply_filters('FHEE__EE_messenger__get_valid_message_types__valid_types', $valid_types, $this);
@@ -473,7 +473,7 @@ 
     {
         $class = get_class($this);
 
-        $config = apply_filters('FHEE__' . $class . '__get_validator_config', $this->_validator_config, $this);
+        $config = apply_filters('FHEE__'.$class.'__get_validator_config', $this->_validator_config, $this);
         $config = apply_filters('FHEE__EE_messenger__get_validator_config', $config, $this);
         return $config;
     }
@@ -512,12 +512,12 @@ 
         // we don't need message types here so we're just going to ignore. we do, however, expect the event id here. The event id is needed to provide a link to setup a custom template for this event.
         $event_id = isset($extra['event']) ? $extra['event'] : null;
 
-        $template_wrapper_path = EE_LIBRARIES . 'messages/messenger/admin_templates/event_switcher_wrapper.template.php';
-        $template_row_path = EE_LIBRARIES . 'messages/messenger/admin_templates/event_switcher_row.template.php';
+        $template_wrapper_path = EE_LIBRARIES.'messages/messenger/admin_templates/event_switcher_wrapper.template.php';
+        $template_row_path = EE_LIBRARIES.'messages/messenger/admin_templates/event_switcher_row.template.php';
 
         // array of template objects for global and custom (non-trashed) (but remember just for this messenger!)
         $global_templates = EEM_Message_Template_Group::instance()->get_all(
-            array( array( 'MTP_messenger' => $this->name, 'MTP_is_global' => true, 'MTP_is_active' => true ) )
+            array(array('MTP_messenger' => $this->name, 'MTP_is_global' => true, 'MTP_is_active' => true))
         );
         $templates_for_event = EEM_Message_Template_Group::instance()->get_all_custom_templates_by_event(
             $event_id,
@@ -526,7 +526,7 @@ 
                 'MTP_is_active' => true
             )
         );
-        $templates_for_event = !empty($templates_for_event) ? $templates_for_event : array();
+        $templates_for_event = ! empty($templates_for_event) ? $templates_for_event : array();
 
         $msg_type_status_map = [
             'payment' => 'PAP',
@@ -547,22 +547,22 @@ 
             if ($mtpg instanceof EE_Message_Template_Group) {
                 // verify this message type is supposed to show on this page
                 $mtp_obj = $mtpg->message_type_obj();
-                if (! $mtp_obj instanceof EE_message_type) {
+                if ( ! $mtp_obj instanceof EE_message_type) {
                     continue;
                 }
                 $mtp_obj->admin_registered_pages = (array) $mtp_obj->admin_registered_pages;
-                if (! in_array('events_edit', $mtp_obj->admin_registered_pages)) {
+                if ( ! in_array('events_edit', $mtp_obj->admin_registered_pages)) {
                     continue;
                 }
                 $select_values = array();
-                $select_values[ $mtpgID ] = esc_html__('Global', 'event_espresso');
+                $select_values[$mtpgID] = esc_html__('Global', 'event_espresso');
                 $default_value = array_key_exists($mtpgID, $templates_for_event) && ! $mtpg->get('MTP_is_override') ? $mtpgID : null;
                 // if the override has been set for the global template, then that means even if there are custom templates already created we ignore them because of the set override.
-                if (! $mtpg->get('MTP_is_override')) {
+                if ( ! $mtpg->get('MTP_is_override')) {
                     // any custom templates for this message type?
                     $custom_templates = EEM_Message_Template_Group::instance()->get_custom_message_template_by_m_and_mt($this->name, $mtpg->message_type());
                     foreach ($custom_templates as $cmtpgID => $cmtpg) {
-                        $select_values[ $cmtpgID ] = $cmtpg->name();
+                        $select_values[$cmtpgID] = $cmtpg->name();
                         $default_value = array_key_exists($cmtpgID, $templates_for_event) ? $cmtpgID : $default_value;
                     }
                 }
@@ -591,26 +591,26 @@ 
                 $st_args['mt_name'] = ucwords($mtp_obj->label['singular']);
                 $st_args['mt_slug'] = $mt_slug;
                 $st_args['messenger_slug'] = $this->name;
-                $st_args['status_code'] = $msg_type_status_map[ $mt_slug ] ?? '';
+                $st_args['status_code'] = $msg_type_status_map[$mt_slug] ?? '';
                 $st_args['selector'] = EEH_Form_Fields::select_input(
-                    'event_message_templates_relation[' . $mtpgID . ']',
+                    'event_message_templates_relation['.$mtpgID.']',
                     $select_values,
                     $default_value,
-                    'data-messenger="' . $this->name . '" data-messagetype="' . $mt_slug . '"',
+                    'data-messenger="'.$this->name.'" data-messagetype="'.$mt_slug.'"',
                     'message-template-selector'
                 );
                 // note that  message template group that has override_all_custom set will remove the ability to set a custom message template based off of the global (and that also in turn overrides any other custom templates).
                 $st_args['create_button'] = $mtpg->get('MTP_is_override')
                     ? ''
                     : '
-                    <a data-messenger="' . $this->name . '"
-                       data-messagetype="' . $mt_slug . '"
-                       data-grpid="' . $default_value . '"
+                    <a data-messenger="' . $this->name.'"
+                       data-messagetype="' . $mt_slug.'"
+                       data-grpid="' . $default_value.'"
                        target="_blank"
-                       href="' . $create_url . '"
+                       href="' . $create_url.'"
                        class="button button--secondary button--tiny create-mtpg-button"
                     >
-                        ' . esc_html__('Create New Custom', 'event_espresso') . '
+                        ' . esc_html__('Create New Custom', 'event_espresso').'
                     </a>';
                 $st_args['create_button'] = EE_Registry::instance()->CAP->current_user_can(
                     'ee_edit_messages',
@@ -618,19 +618,19 @@ 
                 )
                     ? $st_args['create_button']
                     : '';
-                $st_args['edit_button']   = EE_Registry::instance()->CAP->current_user_can(
+                $st_args['edit_button'] = EE_Registry::instance()->CAP->current_user_can(
                     'ee_edit_message',
                     'espresso_messages_edit_message_template',
                     $mtpgID
                 )
                     ? '
-                    <a data-messagetype="' . $mt_slug . '"
-                       data-grpid="' . $default_value . '"
+                    <a data-messagetype="' . $mt_slug.'"
+                       data-grpid="' . $default_value.'"
                        target="_blank"
-                       href="' . $edit_url . '"
+                       href="' . $edit_url.'"
                        class="button button--secondary button--tiny edit-mtpg-button"
                     >
-                        ' . esc_html__('Edit', 'event_espresso') . '
+                        ' . esc_html__('Edit', 'event_espresso').'
                     </a>'
                     : '';
                 $selector_rows .= EEH_Template::display_template($template_row_path, $st_args, true);
@@ -663,7 +663,7 @@ 
     {
         return (array) apply_filters(
             'FHEE__EE_messenger__get_template_fields',
-            apply_filters('FHEE__' . get_class($this) . '__get_template_fields', $this->_template_fields, $this),
+            apply_filters('FHEE__'.get_class($this).'__get_template_fields', $this->_template_fields, $this),
             $this
         );
     }
@@ -680,7 +680,7 @@ 
     protected function _set_template_value($item, $value)
     {
         if (array_key_exists($item, $this->_template_fields)) {
-            $prop = '_' . $item;
+            $prop = '_'.$item;
             $this->{$prop} = $value;
         }
     }
@@ -741,7 +741,7 @@ 
                 $message,
                 $message_type
             );
-            if (! empty($settings)) {
+            if ( ! empty($settings)) {
                 foreach ($settings as $field => $value) {
                     $this->_set_template_value($field, $value);
                 }
@@ -749,12 +749,12 @@ 
         }
 
         // enqueue preview js so that any links/buttons on the page are disabled.
-        if (! $send) {
+        if ( ! $send) {
             // the below may seem like duplication.  However, typically if a messenger enqueues scripts/styles,
             // it deregisters all existing wp scripts and styles first.  So the second hook ensures our previewer still gets setup.
-            add_action('admin_enqueue_scripts', array( $this, 'add_preview_script' ), 10);
-            add_action('wp_enqueue_scripts', array( $this, 'add_preview_script' ), 10);
-            add_action('AHEE__EE_messenger__enqueue_scripts_styles', array( $this, 'add_preview_script' ), 10);
+            add_action('admin_enqueue_scripts', array($this, 'add_preview_script'), 10);
+            add_action('wp_enqueue_scripts', array($this, 'add_preview_script'), 10);
+            add_action('AHEE__EE_messenger__enqueue_scripts_styles', array($this, 'add_preview_script'), 10);
         }
 
         return $send ? $this->_send_message() : $this->_preview();
@@ -776,7 +776,7 @@ 
         EE_Registry::$i18n_js_strings['links_disabled'] = wp_strip_all_tags(
             __('All the links on this page have been disabled because this is a generated preview message for the purpose of ensuring layout, style, and content setup.  To test generated links, you must trigger an actual message notification.', 'event_espresso')
         );
-        wp_register_script('ee-messages-preview-js', EE_LIBRARIES_URL . 'messages/messenger/assets/js/ee-messages-preview.js', array( 'jquery' ), EVENT_ESPRESSO_VERSION, true);
+        wp_register_script('ee-messages-preview-js', EE_LIBRARIES_URL.'messages/messenger/assets/js/ee-messages-preview.js', array('jquery'), EVENT_ESPRESSO_VERSION, true);
         wp_localize_script('ee-messages-preview-js', 'eei18n', EE_Registry::$i18n_js_strings);
         wp_enqueue_script('ee-messages-preview-js');
     }
@@ -795,7 +795,7 @@ 
         $variation = $message->get_template_pack_variation();
 
         // verify we have the required template pack value on the $message object.
-        if (! $template_pack instanceof EE_Messages_Template_Pack) {
+        if ( ! $template_pack instanceof EE_Messages_Template_Pack) {
             throw new EE_Error(esc_html__('Incoming $message object must have an EE_Messages_Template_Pack object available.', 'event_espresso'));
         }
 
@@ -807,7 +807,7 @@ 
 
         foreach ($template_fields as $template => $value) {
             if ($template !== 'extra') {
-                $column_value = $message->get_field_or_extra_meta('MSG_' . $template);
+                $column_value = $message->get_field_or_extra_meta('MSG_'.$template);
                 $message_template_value = $column_value ? $column_value : null;
                 $this->_set_template_value($template, $message_template_value);
             }
@@ -831,7 +831,7 @@ 
         $wrapper_template = $this->_tmp_pack->get_wrapper($this->name, $type);
 
         // check file exists and is readable
-        if (!is_readable($wrapper_template)) {
+        if ( ! is_readable($wrapper_template)) {
             throw new EE_Error(sprintf(esc_html__('Unable to access the template file for the %s messenger main content wrapper.  The location being attempted is %s.', 'event_espresso'), ucwords($this->label['singular']), $wrapper_template));
         }
 
@@ -879,7 +879,7 @@ 
         /** @var EE_Message_Resource_Manager $Message_Resource_Manager */
         $Message_Resource_Manager = EE_Registry::instance()->load_lib('Message_Resource_Manager');
         $settings = $Message_Resource_Manager->get_active_messengers_option();
-        return isset($settings[ $this->name ]['test_settings']) ? $settings[ $this->name ]['test_settings'] : array();
+        return isset($settings[$this->name]['test_settings']) ? $settings[$this->name]['test_settings'] : array();
     }
 
 
@@ -896,7 +896,7 @@ 
         /** @var EE_Message_Resource_Manager $Message_Resource_Manager */
         $Message_Resource_Manager = EE_Registry::instance()->load_lib('Message_Resource_Manager');
         $existing = $Message_Resource_Manager->get_active_messengers_option();
-        $existing[ $this->name ]['test_settings'] = $settings;
+        $existing[$this->name]['test_settings'] = $settings;
         return $Message_Resource_Manager->update_active_messengers_option($existing);
     }
 
@@ -913,23 +913,23 @@ 
     public function get_field_label($field)
     {
         // first let's see if the field requests is in the top level array.
-        if (isset($this->_template_fields[ $field ]) && !empty($this->_template_fields[ $field ]['label'])) {
-            return $this->_template[ $field ]['label'];
+        if (isset($this->_template_fields[$field]) && ! empty($this->_template_fields[$field]['label'])) {
+            return $this->_template[$field]['label'];
         }
 
         // nope so let's look in the extra array to see if it's there HOWEVER if the field exists as a top level index in the extra array then we know the label is in the 'main' index.
-        if (isset($this->_template_fields['extra']) && !empty($this->_template_fields['extra'][ $field ]) && !empty($this->_template_fields['extra'][ $field ]['main']['label'])) {
-            return $this->_template_fields['extra'][ $field ]['main']['label'];
+        if (isset($this->_template_fields['extra']) && ! empty($this->_template_fields['extra'][$field]) && ! empty($this->_template_fields['extra'][$field]['main']['label'])) {
+            return $this->_template_fields['extra'][$field]['main']['label'];
         }
 
         // now it's possible this field may just be existing in any of the extra array items.
-        if (!empty($this->_template_fields['extra']) && is_array($this->_template_fields['extra'])) {
+        if ( ! empty($this->_template_fields['extra']) && is_array($this->_template_fields['extra'])) {
             foreach ($this->_template_fields['extra'] as $main_field => $subfields) {
-                if (!is_array($subfields)) {
+                if ( ! is_array($subfields)) {
                     continue;
                 }
-                if (isset($subfields[ $field ]) && !empty($subfields[ $field ]['label'])) {
-                    return $subfields[ $field ]['label'];
+                if (isset($subfields[$field]) && ! empty($subfields[$field]['label'])) {
+                    return $subfields[$field]['label'];
                 }
             }
         }

core/helpers/EEH_MSG_Template.helper.php

Indentation +1259 added lines, -1259 removed lines

@@ -13,1266 +13,1266 @@
  */
 class EEH_MSG_Template
 {
-    /**
-     * Holds a collection of EE_Message_Template_Pack objects.
-     * @type EE_Messages_Template_Pack_Collection
-     */
-    protected static $_template_pack_collection;
-
-
-    /**
-     * @throws EE_Error
-     */
-    private static function _set_autoloader()
-    {
-        EED_Messages::set_autoloaders();
-    }
-
-
-    /**
-     * generate_new_templates
-     * This will handle the messenger, message_type selection when "adding a new custom template" for an event and will
-     * automatically create the defaults for the event.  The user would then be redirected to edit the default context
-     * for the event.
-     *
-     * @access protected
-     * @param string $messenger     the messenger we are generating templates for
-     * @param array  $message_types array of message types that the templates are generated for.
-     * @param int    $GRP_ID        If a non global template is being generated then it is expected we'll have a GRP_ID
-     *                              to use as the base for the new generated template.
-     * @param bool   $global        true indicates generating templates on messenger activation. false requires GRP_ID
-     *                              for event specific template generation.
-     * @return array  @see EEH_MSG_Template::_create_new_templates for the return value of each element in the array
-     *                for templates that are generated.  If this is an empty array then it means no templates were
-     *                generated which usually means there was an error.  Anything in the array with an empty value for
-     *                `MTP_context` means that it was not a new generated template but just reactivated (which only
-     *                happens for global templates that already exist in the database.
-     * @throws EE_Error
-     * @throws ReflectionException
-     */
-    public static function generate_new_templates($messenger, $message_types, $GRP_ID = 0, $global = false)
-    {
-        // make sure message_type is an array.
-        $message_types = (array) $message_types;
-        $templates = array();
-
-        if (empty($messenger)) {
-            throw new EE_Error(esc_html__('We need a messenger to generate templates!', 'event_espresso'));
-        }
-
-        // if we STILL have empty $message_types then we need to generate an error message b/c we NEED message types to do the template files.
-        if (empty($message_types)) {
-            throw new EE_Error(esc_html__('We need at least one message type to generate templates!', 'event_espresso'));
-        }
-
-        EEH_MSG_Template::_set_autoloader();
-        foreach ($message_types as $message_type) {
-            // if this is global template generation.
-            if ($global) {
-                // let's attempt to get the GRP_ID for this combo IF GRP_ID is empty.
-                if (empty($GRP_ID)) {
-                    $GRP_ID = EEM_Message_Template_Group::instance()->get_one(
-                        array(
-                            array(
-                                'MTP_messenger'    => $messenger,
-                                'MTP_message_type' => $message_type,
-                                'MTP_is_global'    => true,
-                            ),
-                        )
-                    );
-                    $GRP_ID = $GRP_ID instanceof EE_Message_Template_Group ? $GRP_ID->ID() : 0;
-                }
-                // First let's determine if we already HAVE global templates for this messenger and message_type combination.
-                //  If we do then NO generation!!
-                if (EEH_MSG_Template::already_generated($messenger, $message_type, $GRP_ID)) {
-                    $templates[] = array(
-                        'GRP_ID' => $GRP_ID,
-                        'MTP_context' => '',
-                    );
-                    // we already have generated templates for this so let's go to the next message type.
-                    continue;
-                }
-            }
-            $new_message_template_group = EEH_MSG_Template::create_new_templates($messenger, $message_type, $GRP_ID, $global);
-
-            if (! $new_message_template_group) {
-                continue;
-            }
-            $templates[] = $new_message_template_group;
-        }
-
-        return $templates;
-    }
-
-
-    /**
-     * The purpose of this method is to determine if there are already generated templates in the database for the
-     * given variables.
-     *
-     * @param string $messenger    messenger
-     * @param string $message_type message type
-     * @param int    $GRP_ID       GRP ID ( if a custom template) (if not provided then we're just doing global
-     *                             template check)
-     * @return bool                true = generated, false = hasn't been generated.
-     * @throws EE_Error
-     */
-    public static function already_generated($messenger, $message_type, $GRP_ID = 0)
-    {
-        EEH_MSG_Template::_set_autoloader();
-        // what method we use depends on whether we have an GRP_ID or not
-        $count = empty($GRP_ID)
-            ? EEM_Message_Template::instance()->count(
-                array(
-                    array(
-                        'Message_Template_Group.MTP_messenger'    => $messenger,
-                        'Message_Template_Group.MTP_message_type' => $message_type,
-                        'Message_Template_Group.MTP_is_global'    => true
-                    )
-                )
-            )
-            : EEM_Message_Template::instance()->count(array( array( 'GRP_ID' => $GRP_ID ) ));
-
-        return $count > 0;
-    }
-
-
-    /**
-     * Updates all message templates matching the incoming messengers and message types to active status.
-     *
-     * @static
-     * @param array $messenger_names    Messenger slug
-     * @param array $message_type_names Message type slug
-     * @return  int                         count of updated records.
-     * @throws EE_Error
-     */
-    public static function update_to_active($messenger_names, $message_type_names)
-    {
-        $messenger_names = is_array($messenger_names) ? $messenger_names : array( $messenger_names );
-        $message_type_names = is_array($message_type_names) ? $message_type_names : array( $message_type_names );
-        return EEM_Message_Template_Group::instance()->update(
-            array( 'MTP_is_active' => 1 ),
-            array(
-                array(
-                    'MTP_messenger'     => array( 'IN', $messenger_names ),
-                    'MTP_message_type'  => array( 'IN', $message_type_names )
-                )
-            )
-        );
-    }
-
-
-    /**
-     * Updates all message template groups matching the incoming arguments to inactive status.
-     *
-     * @static
-     * @param array $messenger_names    The messenger slugs.
-     *                                  If empty then all templates matching the message types are marked inactive.
-     *                                  Otherwise only templates matching the messengers and message types.
-     * @param array $message_type_names The message type slugs.
-     *                                  If empty then all templates matching the messengers are marked inactive.
-     *                                  Otherwise only templates matching the messengers and message types.
-     *
-     * @return int  count of updated records.
-     * @throws EE_Error
-     */
-    public static function update_to_inactive($messenger_names = array(), $message_type_names = array())
-    {
-        return EEM_Message_Template_Group::instance()->deactivate_message_template_groups_for(
-            $messenger_names,
-            $message_type_names
-        );
-    }
-
-
-    /**
-     * The purpose of this function is to return all installed message objects
-     * (messengers and message type regardless of whether they are ACTIVE or not)
-     *
-     * @param string $type
-     * @return array array consisting of installed messenger objects and installed message type objects.
-     * @throws EE_Error
-     * @throws ReflectionException
-     * @deprecated 4.9.0
-     * @static
-     */
-    public static function get_installed_message_objects($type = 'all')
-    {
-        self::_set_autoloader();
-        $message_resource_manager = EE_Registry::instance()->load_lib('Message_Resource_Manager');
-        return array(
-            'messenger' => $message_resource_manager->installed_messengers(),
-            'message_type' => $message_resource_manager->installed_message_types()
-        );
-    }
-
-
-    /**
-     * This will return an array of shortcodes => labels from the
-     * messenger and message_type objects associated with this
-     * template.
-     *
-     * @param string $message_type
-     * @param string $messenger
-     * @param array  $fields                        What fields we're returning valid shortcodes for.
-     *                                              If empty then we assume all fields are to be returned. Optional.
-     * @param string $context                       What context we're going to return shortcodes for. Optional.
-     * @param bool   $merged                        If TRUE then we don't return shortcodes indexed by field,
-     *                                              but instead an array of the unique shortcodes for all the given (
-     *                                              or all) fields. Optional.
-     * @return array                                an array of shortcodes in the format
-     *                                              array( '[shortcode] => 'label')
-     *                                              OR
-     *                                              FALSE if no shortcodes found.
-     * @throws ReflectionException
-     * @throws EE_Error*@since 4.3.0
-     *
-     */
-    public static function get_shortcodes(
-        $message_type,
-        $messenger,
-        $fields = array(),
-        $context = 'admin',
-        $merged = false
-    ) {
-        $messenger_name = str_replace(' ', '_', ucwords(str_replace('_', ' ', $messenger)));
-        $mt_name = str_replace(' ', '_', ucwords(str_replace('_', ' ', $message_type)));
-        /** @var EE_Message_Resource_Manager $message_resource_manager */
-        $message_resource_manager = EE_Registry::instance()->load_lib('Message_Resource_Manager');
-        // convert slug to object
-        $messenger = $message_resource_manager->get_messenger($messenger);
-
-        // if messenger isn't a EE_messenger resource then bail.
-        if (! $messenger instanceof EE_messenger) {
-            return array();
-        }
-
-        // validate class for getting our list of shortcodes
-        $classname = 'EE_Messages_' . $messenger_name . '_' . $mt_name . '_Validator';
-        if (! class_exists($classname)) {
-            $msg[] = esc_html__('The Validator class was unable to load', 'event_espresso');
-            $msg[] = sprintf(
-                esc_html__('The class name compiled was %s. Please check and make sure the spelling and case is correct for the class name and that there is an autoloader in place for this class', 'event_espresso'),
-                $classname
-            );
-            throw new EE_Error(implode('||', $msg));
-        }
-
-        /** @type EE_Messages_Validator $_VLD */
-        $_VLD = new $classname(array(), $context);
-        $valid_shortcodes = $_VLD->get_validators();
-
-        // let's make sure we're only getting the shortcode part of the validators
-        $shortcodes = array();
-        foreach ($valid_shortcodes as $field => $validators) {
-            $shortcodes[ $field ] = $validators['shortcodes'];
-        }
-        $valid_shortcodes = $shortcodes;
-
-        // if not all fields let's make sure we ONLY include the shortcodes for the specified fields.
-        if (! empty($fields)) {
-            $specified_shortcodes = array();
-            foreach ($fields as $field) {
-                if (isset($valid_shortcodes[ $field ])) {
-                    $specified_shortcodes[ $field ] = $valid_shortcodes[ $field ];
-                }
-            }
-            $valid_shortcodes = $specified_shortcodes;
-        }
-
-        // if not merged then let's replace the fields with the localized fields
-        if (! $merged) {
-            // let's get all the fields for the set messenger so that we can get the localized label and use that in the returned array.
-            $field_settings = $messenger->get_template_fields();
-            $localized = array();
-            foreach ($valid_shortcodes as $field => $shortcodes) {
-                // get localized field label
-                if (isset($field_settings[ $field ])) {
-                    // possible that this is used as a main field.
-                    if (empty($field_settings[ $field ])) {
-                        if (isset($field_settings['extra'][ $field ])) {
-                            $_field = $field_settings['extra'][ $field ]['main']['label'];
-                        } else {
-                            $_field = $field;
-                        }
-                    } else {
-                        $_field = $field_settings[ $field ]['label'];
-                    }
-                } elseif (isset($field_settings['extra'])) {
-                    // loop through extra "main fields" and see if any of their children have our field
-                    foreach ($field_settings['extra'] as $fields) {
-                        if (isset($fields[ $field ])) {
-                            $_field = $fields[ $field ]['label'];
-                        } else {
-                            $_field = $field;
-                        }
-                    }
-                } else {
-                    $_field = $field;
-                }
-                if (isset($_field)) {
-                    $localized[ (string) $_field ] = $shortcodes;
-                }
-            }
-            $valid_shortcodes = $localized;
-        }
-
-        // if $merged then let's merge all the shortcodes into one list NOT indexed by field.
-        if ($merged) {
-            $merged_codes = array();
-            foreach ($valid_shortcodes as $shortcode) {
-                foreach ($shortcode as $code => $label) {
-                    if (isset($merged_codes[ $code ])) {
-                        continue;
-                    } else {
-                        $merged_codes[ $code ] = $label;
-                    }
-                }
-            }
-            $valid_shortcodes = $merged_codes;
-        }
-
-        return $valid_shortcodes;
-    }
-
-
-    /**
-     * Get Messenger object.
-     *
-     * @param string $messenger messenger slug for the messenger object we want to retrieve.
-     * @return EE_messenger
-     * @throws ReflectionException
-     * @throws EE_Error*@since 4.3.0
-     * @deprecated 4.9.0
-     */
-    public static function messenger_obj($messenger)
-    {
-        /** @type EE_Message_Resource_Manager $Message_Resource_Manager */
-        $Message_Resource_Manager = EE_Registry::instance()->load_lib('Message_Resource_Manager');
-        return $Message_Resource_Manager->get_messenger($messenger);
-    }
-
-
-    /**
-     * get Message type object
-     *
-     * @param string $message_type the slug for the message type object to retrieve
-     * @return EE_message_type
-     * @throws ReflectionException
-     * @throws EE_Error*@since 4.3.0
-     * @deprecated 4.9.0
-     */
-    public static function message_type_obj($message_type)
-    {
-        /** @type EE_Message_Resource_Manager $Message_Resource_Manager */
-        $Message_Resource_Manager = EE_Registry::instance()->load_lib('Message_Resource_Manager');
-        return $Message_Resource_Manager->get_message_type($message_type);
-    }
-
-
-    /**
-     * Given a message_type slug, will return whether that message type is active in the system or not.
-     *
-     * @since    4.3.0
-     * @param string $message_type message type to check for.
-     * @return boolean
-     * @throws EE_Error
-     * @throws ReflectionException
-     */
-    public static function is_mt_active($message_type)
-    {
-        /** @type EE_Message_Resource_Manager $Message_Resource_Manager */
-        $Message_Resource_Manager = EE_Registry::instance()->load_lib('Message_Resource_Manager');
-        $active_mts = $Message_Resource_Manager->list_of_active_message_types();
-        return in_array($message_type, $active_mts);
-    }
-
-
-    /**
-     * Given a messenger slug, will return whether that messenger is active in the system or not.
-     *
-     * @since    4.3.0
-     *
-     * @param string $messenger slug for messenger to check.
-     * @return boolean
-     * @throws EE_Error
-     * @throws ReflectionException
-     */
-    public static function is_messenger_active($messenger)
-    {
-        /** @type EE_Message_Resource_Manager $Message_Resource_Manager */
-        $Message_Resource_Manager = EE_Registry::instance()->load_lib('Message_Resource_Manager');
-        $active_messenger = $Message_Resource_Manager->get_active_messenger($messenger);
-        return $active_messenger instanceof EE_messenger;
-    }
-
-
-    /**
-     * Used to return active messengers array stored in the wp options table.
-     * If no value is present in the option then an empty array is returned.
-     *
-     * @deprecated 4.9
-     * @since      4.3.1
-     *
-     * @return array
-     * @throws EE_Error
-     * @throws ReflectionException
-     */
-    public static function get_active_messengers_in_db()
-    {
-        EE_Error::doing_it_wrong(
-            __METHOD__,
-            esc_html__('Please use EE_Message_Resource_Manager::get_active_messengers_option() instead.', 'event_espresso'),
-            '4.9.0'
-        );
-        /** @var EE_Message_Resource_Manager $Message_Resource_Manager */
-        $Message_Resource_Manager = EE_Registry::instance()->load_lib('Message_Resource_Manager');
-        return $Message_Resource_Manager->get_active_messengers_option();
-    }
-
-
-    /**
-     * Used to update the active messengers array stored in the wp options table.
-     *
-     * @since      4.3.1
-     * @deprecated 4.9.0
-     *
-     * @param array $data_to_save Incoming data to save.
-     *
-     * @return bool FALSE if not updated, TRUE if updated.
-     * @throws EE_Error
-     * @throws ReflectionException
-     */
-    public static function update_active_messengers_in_db($data_to_save)
-    {
-        EE_Error::doing_it_wrong(
-            __METHOD__,
-            esc_html__('Please use EE_Message_Resource_Manager::update_active_messengers_option() instead.', 'event_espresso'),
-            '4.9.0'
-        );
-        /** @var EE_Message_Resource_Manager $Message_Resource_Manager */
-        $Message_Resource_Manager = EE_Registry::instance()->load_lib('Message_Resource_Manager');
-        return $Message_Resource_Manager->update_active_messengers_option($data_to_save);
-    }
-
-
-    /**
-     * This does some validation of incoming params, determines what type of url is being prepped and returns the
-     * appropriate url trigger
-     *
-     * @param EE_message_type $message_type
-     * @param EE_Message $message
-     * @param EE_Registration | null $registration  The registration object must be included if this
-     *                                              is going to be a registration trigger url.
-     * @param string $sending_messenger             The (optional) sending messenger for the url.
-     *
-     * @return string
-     * @throws EE_Error
-     */
-    public static function get_url_trigger(
-        EE_message_type $message_type,
-        EE_Message $message,
-        $registration = null,
-        $sending_messenger = ''
-    ) {
-        // first determine if the url can be to the EE_Message object.
-        if (! $message_type->always_generate()) {
-            return EEH_MSG_Template::generate_browser_trigger($message);
-        }
-
-        // if $registration object is not valid then exit early because there's nothing that can be generated.
-        if (! $registration instanceof EE_Registration) {
-            throw new EE_Error(
-                esc_html__('Incoming value for registration is not a valid EE_Registration object.', 'event_espresso')
-            );
-        }
-
-        // validate given context
-        $contexts = $message_type->get_contexts();
-        if ($message->context() !== '' && ! isset($contexts[ $message->context() ])) {
-            throw new EE_Error(
-                sprintf(
-                    esc_html__('The context %s is not a valid context for %s.', 'event_espresso'),
-                    $message->context(),
-                    get_class($message_type)
-                )
-            );
-        }
-
-        // valid sending messenger but only if sending messenger set.  Otherwise generating messenger is used.
-        if (! empty($sending_messenger)) {
-            $with_messengers = $message_type->with_messengers();
-            if (
-                ! isset($with_messengers[ $message->messenger() ])
-                 || ! in_array($sending_messenger, $with_messengers[ $message->messenger() ])
-            ) {
-                throw new EE_Error(
-                    sprintf(
-                        esc_html__(
-                            'The given sending messenger string (%1$s) does not match a valid sending messenger with the %2$s.  If this is incorrect, make sure that the message type has defined this messenger as a sending messenger in its $_with_messengers array.',
-                            'event_espresso'
-                        ),
-                        $sending_messenger,
-                        get_class($message_type)
-                    )
-                );
-            }
-        } else {
-            $sending_messenger = $message->messenger();
-        }
-        return EEH_MSG_Template::generate_url_trigger(
-            $sending_messenger,
-            $message->messenger(),
-            $message->context(),
-            $message->message_type(),
-            $registration,
-            $message->GRP_ID()
-        );
-    }
-
-
-    /**
-     * This returns the url for triggering a in browser view of a specific EE_Message object.
-     * @param EE_Message $message
-     * @return string.
-     */
-    public static function generate_browser_trigger(EE_Message $message)
-    {
-        $query_args = array(
-            'ee' => 'msg_browser_trigger',
-            'token' => $message->MSG_token()
-        );
-        return apply_filters(
-            'FHEE__EEH_MSG_Template__generate_browser_trigger',
-            add_query_arg($query_args, site_url()),
-            $message
-        );
-    }
-
-
-
-
-
-
-    /**
-     * This returns the url for triggering an in browser view of the error saved on the incoming message object.
-     * @param EE_Message $message
-     * @return string
-     */
-    public static function generate_error_display_trigger(EE_Message $message)
-    {
-        return apply_filters(
-            'FHEE__EEH_MSG_Template__generate_error_display_trigger',
-            add_query_arg(
-                array(
-                    'ee' => 'msg_browser_error_trigger',
-                    'token' => $message->MSG_token()
-                ),
-                site_url()
-            ),
-            $message
-        );
-    }
-
-
-    /**
-     * This generates a url trigger for the msg_url_trigger route using the given arguments
-     *
-     * @param string          $sending_messenger      The sending messenger slug.
-     * @param string          $generating_messenger   The generating messenger slug.
-     * @param string          $context                The context for the template.
-     * @param string          $message_type           The message type slug
-     * @param EE_Registration $registration
-     * @param integer         $message_template_group id   The EE_Message_Template_Group ID for the template.
-     * @param integer         $data_id                The id to the EE_Base_Class for getting the data used by the
-     *                                                trigger.
-     * @return string          The generated url.
-     * @throws EE_Error
-     */
-    public static function generate_url_trigger(
-        $sending_messenger,
-        $generating_messenger,
-        $context,
-        $message_type,
-        EE_Registration $registration,
-        $message_template_group,
-        $data_id = 0
-    ) {
-        $query_args = array(
-            'ee' => 'msg_url_trigger',
-            'snd_msgr' => $sending_messenger,
-            'gen_msgr' => $generating_messenger,
-            'message_type' => $message_type,
-            'context' => $context,
-            'token' => $registration->reg_url_link(),
-            'GRP_ID' => $message_template_group,
-            'id' => $data_id
-            );
-        $url = add_query_arg($query_args, get_home_url());
-
-        // made it here so now we can just get the url and filter it.  Filtered globally and by message type.
-        return apply_filters(
-            'FHEE__EEH_MSG_Template__generate_url_trigger',
-            $url,
-            $sending_messenger,
-            $generating_messenger,
-            $context,
-            $message_type,
-            $registration,
-            $message_template_group,
-            $data_id
-        );
-    }
-
-
-
-
-    /**
-     * Return the specific css for the action icon given.
-     *
-     * @param string $type  What action to return.
-     * @return string[]
-     * @since 4.9.0
-     */
-    public static function get_message_action_icon($type)
-    {
-        $action_icons = self::get_message_action_icons();
-        return isset($action_icons[ $type ]) ? $action_icons[ $type ] : [];
-    }
-
-
-    /**
-     * This is used for retrieving the css classes used for the icons representing message actions.
-     *
-     * @since 4.9.0
-     *
-     * @return array
-     */
-    public static function get_message_action_icons()
-    {
-        return apply_filters(
-            'FHEE__EEH_MSG_Template__message_action_icons',
-            array(
-                'view' => array(
-                    'label' => esc_html__('View Message', 'event_espresso'),
-                    'css_class' => 'dashicons dashicons-visibility',
-                ),
-                'error' => array(
-                    'label' => esc_html__('View Error Message', 'event_espresso'),
-                    'css_class' => 'dashicons dashicons-info',
-                ),
-                'see_notifications_for' => array(
-                    'label' => esc_html__('View Related Messages', 'event_espresso'),
-                    'css_class' => 'dashicons dashicons-megaphone',
-                ),
-                'generate_now' => array(
-                    'label' => esc_html__('Generate the message now.', 'event_espresso'),
-                    'css_class' => 'dashicons dashicons-admin-tools',
-                ),
-                'send_now' => array(
-                    'label' => esc_html__('Send Immediately', 'event_espresso'),
-                    'css_class' => 'dashicons dashicons-controls-forward',
-                ),
-                'queue_for_resending' => array(
-                    'label' => esc_html__('Queue for Resending', 'event_espresso'),
-                    'css_class' => 'dashicons dashicons-controls-repeat',
-                ),
-                'view_transaction' => array(
-                    'label' => esc_html__('View related Transaction', 'event_espresso'),
-                    'css_class' => 'dashicons dashicons-cart',
-                )
-            )
-        );
-    }
-
-
-    /**
-     * This returns the url for a given action related to EE_Message.
-     *
-     * @param string     $type         What type of action to return the url for.
-     * @param EE_Message $message      Required for generating the correct url for some types.
-     * @param array      $query_params Any additional query params to be included with the generated url.
-     *
-     * @return string
-     * @throws EE_Error
-     * @throws ReflectionException
-     * @since 4.9.0
-     *
-     */
-    public static function get_message_action_url($type, EE_Message $message = null, $query_params = array())
-    {
-        $action_urls = self::get_message_action_urls($message, $query_params);
-        return isset($action_urls[ $type ])  ? $action_urls[ $type ] : '';
-    }
-
-
-    /**
-     * This returns all the current urls for EE_Message actions.
-     *
-     * @since 4.9.0
-     *
-     * @param EE_Message $message      The EE_Message object required to generate correct urls for some types.
-     * @param array      $query_params Any additional query_params to be included with the generated url.
-     *
-     * @return array
-     * @throws EE_Error
-     * @throws ReflectionException
-     */
-    public static function get_message_action_urls(EE_Message $message = null, $query_params = array())
-    {
-        EE_Registry::instance()->load_helper('URL');
-        // if $message is not an instance of EE_Message then let's just do a dummy.
-        $message = empty($message) ? EE_Message_Factory::create() : $message;
-        $action_urls =  apply_filters(
-            'FHEE__EEH_MSG_Template__get_message_action_url',
-            array(
-                'view' => EEH_MSG_Template::generate_browser_trigger($message),
-                'error' => EEH_MSG_Template::generate_error_display_trigger($message),
-                'see_notifications_for' => EEH_URL::add_query_args_and_nonce(
-                    array_merge(
-                        array(
-                            'page' => 'espresso_messages',
-                            'action' => 'default',
-                            'filterby' => 1,
-                        ),
-                        $query_params
-                    ),
-                    admin_url('admin.php')
-                ),
-                'generate_now' => EEH_URL::add_query_args_and_nonce(
-                    array(
-                        'page' => 'espresso_messages',
-                        'action' => 'generate_now',
-                        'MSG_ID' => $message->ID()
-                    ),
-                    admin_url('admin.php')
-                ),
-                'send_now' => EEH_URL::add_query_args_and_nonce(
-                    array(
-                        'page' => 'espresso_messages',
-                        'action' => 'send_now',
-                        'MSG_ID' => $message->ID()
-                    ),
-                    admin_url('admin.php')
-                ),
-                'queue_for_resending' => EEH_URL::add_query_args_and_nonce(
-                    array(
-                        'page' => 'espresso_messages',
-                        'action' => 'queue_for_resending',
-                        'MSG_ID' => $message->ID()
-                    ),
-                    admin_url('admin.php')
-                ),
-            )
-        );
-        if (
-            $message->TXN_ID() > 0
-            && EE_Registry::instance()->CAP->current_user_can(
-                'ee_read_transaction',
-                'espresso_transactions_default',
-                $message->TXN_ID()
-            )
-        ) {
-            $action_urls['view_transaction'] = EEH_URL::add_query_args_and_nonce(
-                array(
-                    'page' => 'espresso_transactions',
-                    'action' => 'view_transaction',
-                    'TXN_ID' => $message->TXN_ID()
-                ),
-                admin_url('admin.php')
-            );
-        } else {
-            $action_urls['view_transaction'] = '';
-        }
-        return $action_urls;
-    }
-
-
-    /**
-     * This returns a generated link html including the icon used for the action link for EE_Message actions.
-     *
-     * @param string          $type         What type of action the link is for (if invalid type is passed in then an
-     *                                      empty string is returned)
-     * @param EE_Message|null $message      The EE_Message object (required for some actions to generate correctly)
-     * @param array           $query_params Any extra query params to include in the generated link.
-     *
-     * @return string
-     * @throws EE_Error
-     * @throws ReflectionException
-     * @since 4.9.0
-     *
-     */
-    public static function get_message_action_link($type, EE_Message $message = null, $query_params = array())
-    {
-        $url = EEH_MSG_Template::get_message_action_url($type, $message, $query_params);
-        $icon_css = EEH_MSG_Template::get_message_action_icon($type);
-        $label = $icon_css['label'] ?? null;
-        $label = $label ? 'aria-label="' . $label . '"' : '';
-        $class = $label ? ' ee-aria-tooltip' : '';
-
-        if (empty($url) || empty($icon_css) || ! isset($icon_css['css_class'])) {
-            return '';
-        }
-
-        $icon_css['css_class'] .= esc_attr(
-            apply_filters(
-                'FHEE__EEH_MSG_Template__get_message_action_link__icon_css_class',
-                ' js-ee-message-action-link ee-message-action-link-' . $type,
-                $type,
-                $message,
-                $query_params
-            )
-        );
-
-        return '
+	/**
+	 * Holds a collection of EE_Message_Template_Pack objects.
+	 * @type EE_Messages_Template_Pack_Collection
+	 */
+	protected static $_template_pack_collection;
+
+
+	/**
+	 * @throws EE_Error
+	 */
+	private static function _set_autoloader()
+	{
+		EED_Messages::set_autoloaders();
+	}
+
+
+	/**
+	 * generate_new_templates
+	 * This will handle the messenger, message_type selection when "adding a new custom template" for an event and will
+	 * automatically create the defaults for the event.  The user would then be redirected to edit the default context
+	 * for the event.
+	 *
+	 * @access protected
+	 * @param string $messenger     the messenger we are generating templates for
+	 * @param array  $message_types array of message types that the templates are generated for.
+	 * @param int    $GRP_ID        If a non global template is being generated then it is expected we'll have a GRP_ID
+	 *                              to use as the base for the new generated template.
+	 * @param bool   $global        true indicates generating templates on messenger activation. false requires GRP_ID
+	 *                              for event specific template generation.
+	 * @return array  @see EEH_MSG_Template::_create_new_templates for the return value of each element in the array
+	 *                for templates that are generated.  If this is an empty array then it means no templates were
+	 *                generated which usually means there was an error.  Anything in the array with an empty value for
+	 *                `MTP_context` means that it was not a new generated template but just reactivated (which only
+	 *                happens for global templates that already exist in the database.
+	 * @throws EE_Error
+	 * @throws ReflectionException
+	 */
+	public static function generate_new_templates($messenger, $message_types, $GRP_ID = 0, $global = false)
+	{
+		// make sure message_type is an array.
+		$message_types = (array) $message_types;
+		$templates = array();
+
+		if (empty($messenger)) {
+			throw new EE_Error(esc_html__('We need a messenger to generate templates!', 'event_espresso'));
+		}
+
+		// if we STILL have empty $message_types then we need to generate an error message b/c we NEED message types to do the template files.
+		if (empty($message_types)) {
+			throw new EE_Error(esc_html__('We need at least one message type to generate templates!', 'event_espresso'));
+		}
+
+		EEH_MSG_Template::_set_autoloader();
+		foreach ($message_types as $message_type) {
+			// if this is global template generation.
+			if ($global) {
+				// let's attempt to get the GRP_ID for this combo IF GRP_ID is empty.
+				if (empty($GRP_ID)) {
+					$GRP_ID = EEM_Message_Template_Group::instance()->get_one(
+						array(
+							array(
+								'MTP_messenger'    => $messenger,
+								'MTP_message_type' => $message_type,
+								'MTP_is_global'    => true,
+							),
+						)
+					);
+					$GRP_ID = $GRP_ID instanceof EE_Message_Template_Group ? $GRP_ID->ID() : 0;
+				}
+				// First let's determine if we already HAVE global templates for this messenger and message_type combination.
+				//  If we do then NO generation!!
+				if (EEH_MSG_Template::already_generated($messenger, $message_type, $GRP_ID)) {
+					$templates[] = array(
+						'GRP_ID' => $GRP_ID,
+						'MTP_context' => '',
+					);
+					// we already have generated templates for this so let's go to the next message type.
+					continue;
+				}
+			}
+			$new_message_template_group = EEH_MSG_Template::create_new_templates($messenger, $message_type, $GRP_ID, $global);
+
+			if (! $new_message_template_group) {
+				continue;
+			}
+			$templates[] = $new_message_template_group;
+		}
+
+		return $templates;
+	}
+
+
+	/**
+	 * The purpose of this method is to determine if there are already generated templates in the database for the
+	 * given variables.
+	 *
+	 * @param string $messenger    messenger
+	 * @param string $message_type message type
+	 * @param int    $GRP_ID       GRP ID ( if a custom template) (if not provided then we're just doing global
+	 *                             template check)
+	 * @return bool                true = generated, false = hasn't been generated.
+	 * @throws EE_Error
+	 */
+	public static function already_generated($messenger, $message_type, $GRP_ID = 0)
+	{
+		EEH_MSG_Template::_set_autoloader();
+		// what method we use depends on whether we have an GRP_ID or not
+		$count = empty($GRP_ID)
+			? EEM_Message_Template::instance()->count(
+				array(
+					array(
+						'Message_Template_Group.MTP_messenger'    => $messenger,
+						'Message_Template_Group.MTP_message_type' => $message_type,
+						'Message_Template_Group.MTP_is_global'    => true
+					)
+				)
+			)
+			: EEM_Message_Template::instance()->count(array( array( 'GRP_ID' => $GRP_ID ) ));
+
+		return $count > 0;
+	}
+
+
+	/**
+	 * Updates all message templates matching the incoming messengers and message types to active status.
+	 *
+	 * @static
+	 * @param array $messenger_names    Messenger slug
+	 * @param array $message_type_names Message type slug
+	 * @return  int                         count of updated records.
+	 * @throws EE_Error
+	 */
+	public static function update_to_active($messenger_names, $message_type_names)
+	{
+		$messenger_names = is_array($messenger_names) ? $messenger_names : array( $messenger_names );
+		$message_type_names = is_array($message_type_names) ? $message_type_names : array( $message_type_names );
+		return EEM_Message_Template_Group::instance()->update(
+			array( 'MTP_is_active' => 1 ),
+			array(
+				array(
+					'MTP_messenger'     => array( 'IN', $messenger_names ),
+					'MTP_message_type'  => array( 'IN', $message_type_names )
+				)
+			)
+		);
+	}
+
+
+	/**
+	 * Updates all message template groups matching the incoming arguments to inactive status.
+	 *
+	 * @static
+	 * @param array $messenger_names    The messenger slugs.
+	 *                                  If empty then all templates matching the message types are marked inactive.
+	 *                                  Otherwise only templates matching the messengers and message types.
+	 * @param array $message_type_names The message type slugs.
+	 *                                  If empty then all templates matching the messengers are marked inactive.
+	 *                                  Otherwise only templates matching the messengers and message types.
+	 *
+	 * @return int  count of updated records.
+	 * @throws EE_Error
+	 */
+	public static function update_to_inactive($messenger_names = array(), $message_type_names = array())
+	{
+		return EEM_Message_Template_Group::instance()->deactivate_message_template_groups_for(
+			$messenger_names,
+			$message_type_names
+		);
+	}
+
+
+	/**
+	 * The purpose of this function is to return all installed message objects
+	 * (messengers and message type regardless of whether they are ACTIVE or not)
+	 *
+	 * @param string $type
+	 * @return array array consisting of installed messenger objects and installed message type objects.
+	 * @throws EE_Error
+	 * @throws ReflectionException
+	 * @deprecated 4.9.0
+	 * @static
+	 */
+	public static function get_installed_message_objects($type = 'all')
+	{
+		self::_set_autoloader();
+		$message_resource_manager = EE_Registry::instance()->load_lib('Message_Resource_Manager');
+		return array(
+			'messenger' => $message_resource_manager->installed_messengers(),
+			'message_type' => $message_resource_manager->installed_message_types()
+		);
+	}
+
+
+	/**
+	 * This will return an array of shortcodes => labels from the
+	 * messenger and message_type objects associated with this
+	 * template.
+	 *
+	 * @param string $message_type
+	 * @param string $messenger
+	 * @param array  $fields                        What fields we're returning valid shortcodes for.
+	 *                                              If empty then we assume all fields are to be returned. Optional.
+	 * @param string $context                       What context we're going to return shortcodes for. Optional.
+	 * @param bool   $merged                        If TRUE then we don't return shortcodes indexed by field,
+	 *                                              but instead an array of the unique shortcodes for all the given (
+	 *                                              or all) fields. Optional.
+	 * @return array                                an array of shortcodes in the format
+	 *                                              array( '[shortcode] => 'label')
+	 *                                              OR
+	 *                                              FALSE if no shortcodes found.
+	 * @throws ReflectionException
+	 * @throws EE_Error*@since 4.3.0
+	 *
+	 */
+	public static function get_shortcodes(
+		$message_type,
+		$messenger,
+		$fields = array(),
+		$context = 'admin',
+		$merged = false
+	) {
+		$messenger_name = str_replace(' ', '_', ucwords(str_replace('_', ' ', $messenger)));
+		$mt_name = str_replace(' ', '_', ucwords(str_replace('_', ' ', $message_type)));
+		/** @var EE_Message_Resource_Manager $message_resource_manager */
+		$message_resource_manager = EE_Registry::instance()->load_lib('Message_Resource_Manager');
+		// convert slug to object
+		$messenger = $message_resource_manager->get_messenger($messenger);
+
+		// if messenger isn't a EE_messenger resource then bail.
+		if (! $messenger instanceof EE_messenger) {
+			return array();
+		}
+
+		// validate class for getting our list of shortcodes
+		$classname = 'EE_Messages_' . $messenger_name . '_' . $mt_name . '_Validator';
+		if (! class_exists($classname)) {
+			$msg[] = esc_html__('The Validator class was unable to load', 'event_espresso');
+			$msg[] = sprintf(
+				esc_html__('The class name compiled was %s. Please check and make sure the spelling and case is correct for the class name and that there is an autoloader in place for this class', 'event_espresso'),
+				$classname
+			);
+			throw new EE_Error(implode('||', $msg));
+		}
+
+		/** @type EE_Messages_Validator $_VLD */
+		$_VLD = new $classname(array(), $context);
+		$valid_shortcodes = $_VLD->get_validators();
+
+		// let's make sure we're only getting the shortcode part of the validators
+		$shortcodes = array();
+		foreach ($valid_shortcodes as $field => $validators) {
+			$shortcodes[ $field ] = $validators['shortcodes'];
+		}
+		$valid_shortcodes = $shortcodes;
+
+		// if not all fields let's make sure we ONLY include the shortcodes for the specified fields.
+		if (! empty($fields)) {
+			$specified_shortcodes = array();
+			foreach ($fields as $field) {
+				if (isset($valid_shortcodes[ $field ])) {
+					$specified_shortcodes[ $field ] = $valid_shortcodes[ $field ];
+				}
+			}
+			$valid_shortcodes = $specified_shortcodes;
+		}
+
+		// if not merged then let's replace the fields with the localized fields
+		if (! $merged) {
+			// let's get all the fields for the set messenger so that we can get the localized label and use that in the returned array.
+			$field_settings = $messenger->get_template_fields();
+			$localized = array();
+			foreach ($valid_shortcodes as $field => $shortcodes) {
+				// get localized field label
+				if (isset($field_settings[ $field ])) {
+					// possible that this is used as a main field.
+					if (empty($field_settings[ $field ])) {
+						if (isset($field_settings['extra'][ $field ])) {
+							$_field = $field_settings['extra'][ $field ]['main']['label'];
+						} else {
+							$_field = $field;
+						}
+					} else {
+						$_field = $field_settings[ $field ]['label'];
+					}
+				} elseif (isset($field_settings['extra'])) {
+					// loop through extra "main fields" and see if any of their children have our field
+					foreach ($field_settings['extra'] as $fields) {
+						if (isset($fields[ $field ])) {
+							$_field = $fields[ $field ]['label'];
+						} else {
+							$_field = $field;
+						}
+					}
+				} else {
+					$_field = $field;
+				}
+				if (isset($_field)) {
+					$localized[ (string) $_field ] = $shortcodes;
+				}
+			}
+			$valid_shortcodes = $localized;
+		}
+
+		// if $merged then let's merge all the shortcodes into one list NOT indexed by field.
+		if ($merged) {
+			$merged_codes = array();
+			foreach ($valid_shortcodes as $shortcode) {
+				foreach ($shortcode as $code => $label) {
+					if (isset($merged_codes[ $code ])) {
+						continue;
+					} else {
+						$merged_codes[ $code ] = $label;
+					}
+				}
+			}
+			$valid_shortcodes = $merged_codes;
+		}
+
+		return $valid_shortcodes;
+	}
+
+
+	/**
+	 * Get Messenger object.
+	 *
+	 * @param string $messenger messenger slug for the messenger object we want to retrieve.
+	 * @return EE_messenger
+	 * @throws ReflectionException
+	 * @throws EE_Error*@since 4.3.0
+	 * @deprecated 4.9.0
+	 */
+	public static function messenger_obj($messenger)
+	{
+		/** @type EE_Message_Resource_Manager $Message_Resource_Manager */
+		$Message_Resource_Manager = EE_Registry::instance()->load_lib('Message_Resource_Manager');
+		return $Message_Resource_Manager->get_messenger($messenger);
+	}
+
+
+	/**
+	 * get Message type object
+	 *
+	 * @param string $message_type the slug for the message type object to retrieve
+	 * @return EE_message_type
+	 * @throws ReflectionException
+	 * @throws EE_Error*@since 4.3.0
+	 * @deprecated 4.9.0
+	 */
+	public static function message_type_obj($message_type)
+	{
+		/** @type EE_Message_Resource_Manager $Message_Resource_Manager */
+		$Message_Resource_Manager = EE_Registry::instance()->load_lib('Message_Resource_Manager');
+		return $Message_Resource_Manager->get_message_type($message_type);
+	}
+
+
+	/**
+	 * Given a message_type slug, will return whether that message type is active in the system or not.
+	 *
+	 * @since    4.3.0
+	 * @param string $message_type message type to check for.
+	 * @return boolean
+	 * @throws EE_Error
+	 * @throws ReflectionException
+	 */
+	public static function is_mt_active($message_type)
+	{
+		/** @type EE_Message_Resource_Manager $Message_Resource_Manager */
+		$Message_Resource_Manager = EE_Registry::instance()->load_lib('Message_Resource_Manager');
+		$active_mts = $Message_Resource_Manager->list_of_active_message_types();
+		return in_array($message_type, $active_mts);
+	}
+
+
+	/**
+	 * Given a messenger slug, will return whether that messenger is active in the system or not.
+	 *
+	 * @since    4.3.0
+	 *
+	 * @param string $messenger slug for messenger to check.
+	 * @return boolean
+	 * @throws EE_Error
+	 * @throws ReflectionException
+	 */
+	public static function is_messenger_active($messenger)
+	{
+		/** @type EE_Message_Resource_Manager $Message_Resource_Manager */
+		$Message_Resource_Manager = EE_Registry::instance()->load_lib('Message_Resource_Manager');
+		$active_messenger = $Message_Resource_Manager->get_active_messenger($messenger);
+		return $active_messenger instanceof EE_messenger;
+	}
+
+
+	/**
+	 * Used to return active messengers array stored in the wp options table.
+	 * If no value is present in the option then an empty array is returned.
+	 *
+	 * @deprecated 4.9
+	 * @since      4.3.1
+	 *
+	 * @return array
+	 * @throws EE_Error
+	 * @throws ReflectionException
+	 */
+	public static function get_active_messengers_in_db()
+	{
+		EE_Error::doing_it_wrong(
+			__METHOD__,
+			esc_html__('Please use EE_Message_Resource_Manager::get_active_messengers_option() instead.', 'event_espresso'),
+			'4.9.0'
+		);
+		/** @var EE_Message_Resource_Manager $Message_Resource_Manager */
+		$Message_Resource_Manager = EE_Registry::instance()->load_lib('Message_Resource_Manager');
+		return $Message_Resource_Manager->get_active_messengers_option();
+	}
+
+
+	/**
+	 * Used to update the active messengers array stored in the wp options table.
+	 *
+	 * @since      4.3.1
+	 * @deprecated 4.9.0
+	 *
+	 * @param array $data_to_save Incoming data to save.
+	 *
+	 * @return bool FALSE if not updated, TRUE if updated.
+	 * @throws EE_Error
+	 * @throws ReflectionException
+	 */
+	public static function update_active_messengers_in_db($data_to_save)
+	{
+		EE_Error::doing_it_wrong(
+			__METHOD__,
+			esc_html__('Please use EE_Message_Resource_Manager::update_active_messengers_option() instead.', 'event_espresso'),
+			'4.9.0'
+		);
+		/** @var EE_Message_Resource_Manager $Message_Resource_Manager */
+		$Message_Resource_Manager = EE_Registry::instance()->load_lib('Message_Resource_Manager');
+		return $Message_Resource_Manager->update_active_messengers_option($data_to_save);
+	}
+
+
+	/**
+	 * This does some validation of incoming params, determines what type of url is being prepped and returns the
+	 * appropriate url trigger
+	 *
+	 * @param EE_message_type $message_type
+	 * @param EE_Message $message
+	 * @param EE_Registration | null $registration  The registration object must be included if this
+	 *                                              is going to be a registration trigger url.
+	 * @param string $sending_messenger             The (optional) sending messenger for the url.
+	 *
+	 * @return string
+	 * @throws EE_Error
+	 */
+	public static function get_url_trigger(
+		EE_message_type $message_type,
+		EE_Message $message,
+		$registration = null,
+		$sending_messenger = ''
+	) {
+		// first determine if the url can be to the EE_Message object.
+		if (! $message_type->always_generate()) {
+			return EEH_MSG_Template::generate_browser_trigger($message);
+		}
+
+		// if $registration object is not valid then exit early because there's nothing that can be generated.
+		if (! $registration instanceof EE_Registration) {
+			throw new EE_Error(
+				esc_html__('Incoming value for registration is not a valid EE_Registration object.', 'event_espresso')
+			);
+		}
+
+		// validate given context
+		$contexts = $message_type->get_contexts();
+		if ($message->context() !== '' && ! isset($contexts[ $message->context() ])) {
+			throw new EE_Error(
+				sprintf(
+					esc_html__('The context %s is not a valid context for %s.', 'event_espresso'),
+					$message->context(),
+					get_class($message_type)
+				)
+			);
+		}
+
+		// valid sending messenger but only if sending messenger set.  Otherwise generating messenger is used.
+		if (! empty($sending_messenger)) {
+			$with_messengers = $message_type->with_messengers();
+			if (
+				! isset($with_messengers[ $message->messenger() ])
+				 || ! in_array($sending_messenger, $with_messengers[ $message->messenger() ])
+			) {
+				throw new EE_Error(
+					sprintf(
+						esc_html__(
+							'The given sending messenger string (%1$s) does not match a valid sending messenger with the %2$s.  If this is incorrect, make sure that the message type has defined this messenger as a sending messenger in its $_with_messengers array.',
+							'event_espresso'
+						),
+						$sending_messenger,
+						get_class($message_type)
+					)
+				);
+			}
+		} else {
+			$sending_messenger = $message->messenger();
+		}
+		return EEH_MSG_Template::generate_url_trigger(
+			$sending_messenger,
+			$message->messenger(),
+			$message->context(),
+			$message->message_type(),
+			$registration,
+			$message->GRP_ID()
+		);
+	}
+
+
+	/**
+	 * This returns the url for triggering a in browser view of a specific EE_Message object.
+	 * @param EE_Message $message
+	 * @return string.
+	 */
+	public static function generate_browser_trigger(EE_Message $message)
+	{
+		$query_args = array(
+			'ee' => 'msg_browser_trigger',
+			'token' => $message->MSG_token()
+		);
+		return apply_filters(
+			'FHEE__EEH_MSG_Template__generate_browser_trigger',
+			add_query_arg($query_args, site_url()),
+			$message
+		);
+	}
+
+
+
+
+
+
+	/**
+	 * This returns the url for triggering an in browser view of the error saved on the incoming message object.
+	 * @param EE_Message $message
+	 * @return string
+	 */
+	public static function generate_error_display_trigger(EE_Message $message)
+	{
+		return apply_filters(
+			'FHEE__EEH_MSG_Template__generate_error_display_trigger',
+			add_query_arg(
+				array(
+					'ee' => 'msg_browser_error_trigger',
+					'token' => $message->MSG_token()
+				),
+				site_url()
+			),
+			$message
+		);
+	}
+
+
+	/**
+	 * This generates a url trigger for the msg_url_trigger route using the given arguments
+	 *
+	 * @param string          $sending_messenger      The sending messenger slug.
+	 * @param string          $generating_messenger   The generating messenger slug.
+	 * @param string          $context                The context for the template.
+	 * @param string          $message_type           The message type slug
+	 * @param EE_Registration $registration
+	 * @param integer         $message_template_group id   The EE_Message_Template_Group ID for the template.
+	 * @param integer         $data_id                The id to the EE_Base_Class for getting the data used by the
+	 *                                                trigger.
+	 * @return string          The generated url.
+	 * @throws EE_Error
+	 */
+	public static function generate_url_trigger(
+		$sending_messenger,
+		$generating_messenger,
+		$context,
+		$message_type,
+		EE_Registration $registration,
+		$message_template_group,
+		$data_id = 0
+	) {
+		$query_args = array(
+			'ee' => 'msg_url_trigger',
+			'snd_msgr' => $sending_messenger,
+			'gen_msgr' => $generating_messenger,
+			'message_type' => $message_type,
+			'context' => $context,
+			'token' => $registration->reg_url_link(),
+			'GRP_ID' => $message_template_group,
+			'id' => $data_id
+			);
+		$url = add_query_arg($query_args, get_home_url());
+
+		// made it here so now we can just get the url and filter it.  Filtered globally and by message type.
+		return apply_filters(
+			'FHEE__EEH_MSG_Template__generate_url_trigger',
+			$url,
+			$sending_messenger,
+			$generating_messenger,
+			$context,
+			$message_type,
+			$registration,
+			$message_template_group,
+			$data_id
+		);
+	}
+
+
+
+
+	/**
+	 * Return the specific css for the action icon given.
+	 *
+	 * @param string $type  What action to return.
+	 * @return string[]
+	 * @since 4.9.0
+	 */
+	public static function get_message_action_icon($type)
+	{
+		$action_icons = self::get_message_action_icons();
+		return isset($action_icons[ $type ]) ? $action_icons[ $type ] : [];
+	}
+
+
+	/**
+	 * This is used for retrieving the css classes used for the icons representing message actions.
+	 *
+	 * @since 4.9.0
+	 *
+	 * @return array
+	 */
+	public static function get_message_action_icons()
+	{
+		return apply_filters(
+			'FHEE__EEH_MSG_Template__message_action_icons',
+			array(
+				'view' => array(
+					'label' => esc_html__('View Message', 'event_espresso'),
+					'css_class' => 'dashicons dashicons-visibility',
+				),
+				'error' => array(
+					'label' => esc_html__('View Error Message', 'event_espresso'),
+					'css_class' => 'dashicons dashicons-info',
+				),
+				'see_notifications_for' => array(
+					'label' => esc_html__('View Related Messages', 'event_espresso'),
+					'css_class' => 'dashicons dashicons-megaphone',
+				),
+				'generate_now' => array(
+					'label' => esc_html__('Generate the message now.', 'event_espresso'),
+					'css_class' => 'dashicons dashicons-admin-tools',
+				),
+				'send_now' => array(
+					'label' => esc_html__('Send Immediately', 'event_espresso'),
+					'css_class' => 'dashicons dashicons-controls-forward',
+				),
+				'queue_for_resending' => array(
+					'label' => esc_html__('Queue for Resending', 'event_espresso'),
+					'css_class' => 'dashicons dashicons-controls-repeat',
+				),
+				'view_transaction' => array(
+					'label' => esc_html__('View related Transaction', 'event_espresso'),
+					'css_class' => 'dashicons dashicons-cart',
+				)
+			)
+		);
+	}
+
+
+	/**
+	 * This returns the url for a given action related to EE_Message.
+	 *
+	 * @param string     $type         What type of action to return the url for.
+	 * @param EE_Message $message      Required for generating the correct url for some types.
+	 * @param array      $query_params Any additional query params to be included with the generated url.
+	 *
+	 * @return string
+	 * @throws EE_Error
+	 * @throws ReflectionException
+	 * @since 4.9.0
+	 *
+	 */
+	public static function get_message_action_url($type, EE_Message $message = null, $query_params = array())
+	{
+		$action_urls = self::get_message_action_urls($message, $query_params);
+		return isset($action_urls[ $type ])  ? $action_urls[ $type ] : '';
+	}
+
+
+	/**
+	 * This returns all the current urls for EE_Message actions.
+	 *
+	 * @since 4.9.0
+	 *
+	 * @param EE_Message $message      The EE_Message object required to generate correct urls for some types.
+	 * @param array      $query_params Any additional query_params to be included with the generated url.
+	 *
+	 * @return array
+	 * @throws EE_Error
+	 * @throws ReflectionException
+	 */
+	public static function get_message_action_urls(EE_Message $message = null, $query_params = array())
+	{
+		EE_Registry::instance()->load_helper('URL');
+		// if $message is not an instance of EE_Message then let's just do a dummy.
+		$message = empty($message) ? EE_Message_Factory::create() : $message;
+		$action_urls =  apply_filters(
+			'FHEE__EEH_MSG_Template__get_message_action_url',
+			array(
+				'view' => EEH_MSG_Template::generate_browser_trigger($message),
+				'error' => EEH_MSG_Template::generate_error_display_trigger($message),
+				'see_notifications_for' => EEH_URL::add_query_args_and_nonce(
+					array_merge(
+						array(
+							'page' => 'espresso_messages',
+							'action' => 'default',
+							'filterby' => 1,
+						),
+						$query_params
+					),
+					admin_url('admin.php')
+				),
+				'generate_now' => EEH_URL::add_query_args_and_nonce(
+					array(
+						'page' => 'espresso_messages',
+						'action' => 'generate_now',
+						'MSG_ID' => $message->ID()
+					),
+					admin_url('admin.php')
+				),
+				'send_now' => EEH_URL::add_query_args_and_nonce(
+					array(
+						'page' => 'espresso_messages',
+						'action' => 'send_now',
+						'MSG_ID' => $message->ID()
+					),
+					admin_url('admin.php')
+				),
+				'queue_for_resending' => EEH_URL::add_query_args_and_nonce(
+					array(
+						'page' => 'espresso_messages',
+						'action' => 'queue_for_resending',
+						'MSG_ID' => $message->ID()
+					),
+					admin_url('admin.php')
+				),
+			)
+		);
+		if (
+			$message->TXN_ID() > 0
+			&& EE_Registry::instance()->CAP->current_user_can(
+				'ee_read_transaction',
+				'espresso_transactions_default',
+				$message->TXN_ID()
+			)
+		) {
+			$action_urls['view_transaction'] = EEH_URL::add_query_args_and_nonce(
+				array(
+					'page' => 'espresso_transactions',
+					'action' => 'view_transaction',
+					'TXN_ID' => $message->TXN_ID()
+				),
+				admin_url('admin.php')
+			);
+		} else {
+			$action_urls['view_transaction'] = '';
+		}
+		return $action_urls;
+	}
+
+
+	/**
+	 * This returns a generated link html including the icon used for the action link for EE_Message actions.
+	 *
+	 * @param string          $type         What type of action the link is for (if invalid type is passed in then an
+	 *                                      empty string is returned)
+	 * @param EE_Message|null $message      The EE_Message object (required for some actions to generate correctly)
+	 * @param array           $query_params Any extra query params to include in the generated link.
+	 *
+	 * @return string
+	 * @throws EE_Error
+	 * @throws ReflectionException
+	 * @since 4.9.0
+	 *
+	 */
+	public static function get_message_action_link($type, EE_Message $message = null, $query_params = array())
+	{
+		$url = EEH_MSG_Template::get_message_action_url($type, $message, $query_params);
+		$icon_css = EEH_MSG_Template::get_message_action_icon($type);
+		$label = $icon_css['label'] ?? null;
+		$label = $label ? 'aria-label="' . $label . '"' : '';
+		$class = $label ? ' ee-aria-tooltip' : '';
+
+		if (empty($url) || empty($icon_css) || ! isset($icon_css['css_class'])) {
+			return '';
+		}
+
+		$icon_css['css_class'] .= esc_attr(
+			apply_filters(
+				'FHEE__EEH_MSG_Template__get_message_action_link__icon_css_class',
+				' js-ee-message-action-link ee-message-action-link-' . $type,
+				$type,
+				$message,
+				$query_params
+			)
+		);
+
+		return '
             <a href="' . $url . '" ' . $label . ' class="button button--icon-only' . $class . '">
                 <span class="' . esc_attr($icon_css['css_class']) . '"></span>
             </a>';
-    }
-
-
-
-
-
-    /**
-     * This returns an array with keys as reg statuses and values as the corresponding message type slug (filtered).
-     *
-     * @since 4.9.0
-     * @return array
-     */
-    public static function reg_status_to_message_type_array()
-    {
-        return (array) apply_filters(
-            'FHEE__EEH_MSG_Template__reg_status_to_message_type_array',
-            array(
-                EEM_Registration::status_id_approved => 'registration',
-                EEM_Registration::status_id_pending_payment => 'pending_approval',
-                EEM_Registration::status_id_not_approved => 'not_approved_registration',
-                EEM_Registration::status_id_cancelled => 'cancelled_registration',
-                EEM_Registration::status_id_declined => 'declined_registration'
-            )
-        );
-    }
-
-
-
-
-    /**
-     * This returns the corresponding registration message type slug to the given reg status. If there isn't a
-     * match, then returns an empty string.
-     *
-     * @since 4.9.0
-     * @param $reg_status
-     * @return string
-     */
-    public static function convert_reg_status_to_message_type($reg_status)
-    {
-        $reg_status_array = self::reg_status_to_message_type_array();
-        return isset($reg_status_array[ $reg_status ]) ? $reg_status_array[ $reg_status ] : '';
-    }
-
-
-    /**
-     * This returns an array with keys as payment stati and values as the corresponding message type slug (filtered).
-     *
-     * @since 4.9.0
-     * @return array
-     */
-    public static function payment_status_to_message_type_array()
-    {
-        return (array) apply_filters(
-            'FHEE__EEH_MSG_Template__payment_status_to_message_type_array',
-            array(
-                EEM_Payment::status_id_approved => 'payment',
-                EEM_Payment::status_id_pending => 'payment_pending',
-                EEM_Payment::status_id_cancelled => 'payment_cancelled',
-                EEM_Payment::status_id_declined => 'payment_declined',
-                EEM_Payment::status_id_failed => 'payment_failed'
-            )
-        );
-    }
-
-
-
-
-    /**
-     * This returns the corresponding payment message type slug to the given payment status. If there isn't a match then
-     * an empty string is returned
-     *
-     * @since 4.9.0
-     * @param $payment_status
-     * @return string
-     */
-    public static function convert_payment_status_to_message_type($payment_status)
-    {
-        $payment_status_array = self::payment_status_to_message_type_array();
-        return isset($payment_status_array[ $payment_status ]) ? $payment_status_array[ $payment_status ] : '';
-    }
-
-
-    /**
-     * This is used to retrieve the template pack for the given name.
-     *
-     * @param string $template_pack_name  should match the set `dbref` property value on the EE_Messages_Template_Pack.
-     *
-     * @return EE_Messages_Template_Pack
-     */
-    public static function get_template_pack($template_pack_name)
-    {
-        if (! self::$_template_pack_collection instanceof EE_Object_Collection) {
-            self::$_template_pack_collection = new EE_Messages_Template_Pack_Collection();
-        }
-
-        // first see if in collection already
-        $template_pack = self::$_template_pack_collection->get_by_name($template_pack_name);
-
-        if ($template_pack instanceof EE_Messages_Template_Pack) {
-            return $template_pack;
-        }
-
-        // nope...let's get it.
-        // not set yet so let's attempt to get it.
-        $pack_class_name = 'EE_Messages_Template_Pack_' . str_replace(
-            ' ',
-            '_',
-            ucwords(
-                str_replace('_', ' ', $template_pack_name)
-            )
-        );
-        if (! class_exists($pack_class_name) && $template_pack_name !== 'default') {
-            return self::get_template_pack('default');
-        } else {
-            $template_pack = new $pack_class_name();
-            self::$_template_pack_collection->add($template_pack);
-            return $template_pack;
-        }
-    }
-
-
-
-
-    /**
-     * Globs template packs installed in core and returns the template pack collection with all installed template packs
-     * in it.
-     *
-     * @since 4.9.0
-     *
-     * @return EE_Messages_Template_Pack_Collection
-     */
-    public static function get_template_pack_collection()
-    {
-        $new_collection = false;
-        if (! self::$_template_pack_collection instanceof EE_Messages_Template_Pack_Collection) {
-            self::$_template_pack_collection = new EE_Messages_Template_Pack_Collection();
-            $new_collection = true;
-        }
-
-        // glob the defaults directory for messages
-        $templates = glob(EE_LIBRARIES . 'messages/defaults/*', GLOB_ONLYDIR);
-        foreach ($templates as $template_path) {
-            // grab folder name
-            $template = basename($template_path);
-
-            if (! $new_collection) {
-                // already have it?
-                if (self::$_template_pack_collection->get_by_name($template) instanceof EE_Messages_Template_Pack) {
-                    continue;
-                }
-            }
-
-            // setup classname.
-            $template_pack_class_name = 'EE_Messages_Template_Pack_' . str_replace(
-                ' ',
-                '_',
-                ucwords(
-                    str_replace(
-                        '_',
-                        ' ',
-                        $template
-                    )
-                )
-            );
-            if (! class_exists($template_pack_class_name)) {
-                continue;
-            }
-            self::$_template_pack_collection->add(new $template_pack_class_name());
-        }
-
-        /**
-         * Filter for plugins to add in any additional template packs
-         * Note the filter name here is for backward compat, this used to be found in EED_Messages.
-         */
-        $additional_template_packs = apply_filters('FHEE__EED_Messages__get_template_packs__template_packs', array());
-        foreach ((array) $additional_template_packs as $template_pack) {
-            if (
-                self::$_template_pack_collection->get_by_name(
-                    $template_pack->dbref
-                ) instanceof EE_Messages_Template_Pack
-            ) {
-                continue;
-            }
-            self::$_template_pack_collection->add($template_pack);
-        }
-        return self::$_template_pack_collection;
-    }
-
-
-    /**
-     * This is a wrapper for the protected _create_new_templates function
-     *
-     * @param string $messenger_name
-     * @param string $message_type_name message type that the templates are being created for
-     * @param int    $GRP_ID
-     * @param bool   $global
-     * @return array
-     * @throws EE_Error
-     * @throws ReflectionException
-     */
-    public static function create_new_templates($messenger_name, $message_type_name, $GRP_ID = 0, $global = false)
-    {
-        /** @type EE_Message_Resource_Manager $Message_Resource_Manager */
-        $Message_Resource_Manager = EE_Registry::instance()->load_lib('Message_Resource_Manager');
-        $messenger = $Message_Resource_Manager->valid_messenger($messenger_name);
-        $message_type = $Message_Resource_Manager->valid_message_type($message_type_name);
-        if (! EEH_MSG_Template::message_type_has_active_templates_for_messenger($messenger, $message_type, $global)) {
-            return array();
-        }
-        // whew made it this far!  Okay, let's go ahead and create the templates then
-        return EEH_MSG_Template::_create_new_templates($messenger, $message_type, $GRP_ID, $global);
-    }
-
-
-    /**
-     * @param EE_messenger     $messenger
-     * @param EE_message_type  $message_type
-     * @param                  $GRP_ID
-     * @param                  $global
-     * @return array|mixed
-     * @throws EE_Error
-     * @throws ReflectionException
-     */
-    protected static function _create_new_templates(EE_messenger $messenger, EE_message_type $message_type, $GRP_ID, $global)
-    {
-        // if we're creating a custom template then we don't need to use the defaults class
-        if (! $global) {
-            return EEH_MSG_Template::_create_custom_template_group($messenger, $message_type, $GRP_ID);
-        }
-        /** @type EE_Messages_Template_Defaults $Message_Template_Defaults */
-        $Message_Template_Defaults = EE_Registry::factory(
-            'EE_Messages_Template_Defaults',
-            array( $messenger, $message_type, $GRP_ID )
-        );
-        // generate templates
-        $success = $Message_Template_Defaults->create_new_templates();
-
-        // if creating the template failed.  Then we should deactivate the related message_type for the messenger because
-        // its not active if it doesn't have a template.  Note this is only happening for GLOBAL template creation
-        // attempts.
-        if (! $success) {
-            /** @var EE_Message_Resource_Manager $message_resource_manager */
-            $message_resource_manager = EE_Registry::instance()->load_lib('Message_Resource_Manager');
-            $message_resource_manager->deactivate_message_type_for_messenger($message_type->name, $messenger->name);
-        }
-
-        /**
-         * $success is in an array in the following format
-         * array(
-         *    'GRP_ID' => $new_grp_id,
-         *    'MTP_context' => $first_context_in_new_templates,
-         * )
-         */
-        return $success;
-    }
-
-
-    /**
-     * This creates a custom template using the incoming GRP_ID
-     *
-     * @param EE_messenger    $messenger
-     * @param EE_message_type $message_type
-     * @param int             $GRP_ID           GRP_ID for the template_group being used as the base
-     * @return  array $success              This will be an array in the format:
-     *                                          array(
-     *                                          'GRP_ID' => $new_grp_id,
-     *                                          'MTP_context' => $first_context_in_created_template
-     *                                          )
-     * @throws EE_Error
-     * @throws ReflectionException
-     * @access private
-     */
-    private static function _create_custom_template_group(EE_messenger $messenger, EE_message_type $message_type, $GRP_ID)
-    {
-        // defaults
-        $success = array( 'GRP_ID' => null, 'MTP_context' => '' );
-        // get the template group to use as a template from the db.  If $GRP_ID is empty then we'll assume the base will be the global template matching the messenger and message type.
-        $Message_Template_Group = empty($GRP_ID)
-            ? EEM_Message_Template_Group::instance()->get_one(
-                array(
-                    array(
-                        'MTP_messenger'    => $messenger->name,
-                        'MTP_message_type' => $message_type->name,
-                        'MTP_is_global'    => true
-                    )
-                )
-            )
-            : EEM_Message_Template_Group::instance()->get_one_by_ID($GRP_ID);
-        // if we don't have a mtg at this point then we need to bail.
-        if (! $Message_Template_Group instanceof EE_Message_Template_Group) {
-            EE_Error::add_error(
-                sprintf(
-                    esc_html__(
-                        'Something went wrong with generating the custom template from this group id: %s.  This usually happens when there is no matching message template group in the db.',
-                        'event_espresso'
-                    ),
-                    $GRP_ID
-                ),
-                __FILE__,
-                __FUNCTION__,
-                __LINE__
-            );
-            return $success;
-        }
-        // let's get all the related message_template objects for this group.
-        $message_templates = $Message_Template_Group->message_templates();
-        // now we have what we need to setup the new template
-        $new_mtg = clone $Message_Template_Group;
-        $new_mtg->set('GRP_ID', 0);
-        $new_mtg->set('MTP_is_global', false);
-
-        /** @var RequestInterface $request */
-        $request = LoaderFactory::getLoader()->getShared(RequestInterface::class);
-        $template_name = $request->isAjax() && $request->requestParamIsSet('templateName')
-            ? $request->getRequestParam('templateName')
-            : esc_html__('New Custom Template', 'event_espresso');
-        $template_description = $request->isAjax() && $request->requestParamIsSet('templateDescription')
-            ? $request->getRequestParam('templateDescription')
-            : sprintf(
-                esc_html__(
-                    'This is a custom template that was created for the %s messenger and %s message type.',
-                    'event_espresso'
-                ),
-                $new_mtg->messenger_obj()->label['singular'],
-                $new_mtg->message_type_obj()->label['singular']
-            );
-        $new_mtg->set('MTP_name', $template_name);
-        $new_mtg->set('MTP_description', $template_description);
-        // remove ALL relations on this template group so they don't get saved!
-        $new_mtg->_remove_relations('Message_Template');
-        $new_mtg->save();
-        $success['GRP_ID'] = $new_mtg->ID();
-        $success['template_name'] = $template_name;
-        // add new message templates and add relation to.
-        foreach ($message_templates as $message_template) {
-            if (! $message_template instanceof EE_Message_Template) {
-                continue;
-            }
-            $new_message_template = clone $message_template;
-            $new_message_template->set('MTP_ID', 0);
-            $new_message_template->set('GRP_ID', $new_mtg->ID()); // relation
-            $new_message_template->save();
-            if (empty($success['MTP_context']) && $new_message_template->get('MTP_context') !== 'admin') {
-                $success['MTP_context'] = $new_message_template->get('MTP_context');
-            }
-        }
-        return $success;
-    }
-
-
-    /**
-     * message_type_has_active_templates_for_messenger
-     *
-     * @param EE_messenger    $messenger
-     * @param EE_message_type $message_type
-     * @param bool            $global
-     * @return bool
-     * @throws EE_Error
-     */
-    public static function message_type_has_active_templates_for_messenger(
-        EE_messenger $messenger,
-        EE_message_type $message_type,
-        $global = false
-    ) {
-        // is given message_type valid for given messenger (if this is not a global save)
-        if ($global) {
-            return true;
-        }
-        $active_templates = EEM_Message_Template_Group::instance()->count(
-            array(
-                array(
-                    'MTP_is_active'    => true,
-                    'MTP_messenger'    => $messenger->name,
-                    'MTP_message_type' => $message_type->name
-                )
-            )
-        );
-        if ($active_templates > 0) {
-            return true;
-        }
-        EE_Error::add_error(
-            sprintf(
-                esc_html__(
-                    'The %1$s message type is not registered with the %2$s messenger. Please visit the Messenger activation page to assign this message type first if you want to use it.',
-                    'event_espresso'
-                ),
-                $message_type->name,
-                $messenger->name
-            ),
-            __FILE__,
-            __FUNCTION__,
-            __LINE__
-        );
-        return false;
-    }
-
-
-    /**
-     * get_fields
-     * This takes a given messenger and message type
-     * and returns all the template fields indexed by context with field type.
-     *
-     * @param string $messenger_name    name of EE_messenger
-     * @param string $message_type_name name of EE_message_type
-     * @param string $current_context   current context [optional]
-     * @return array
-     * @throws EE_Error
-     * @throws ReflectionException
-     */
-    public static function get_fields(
-        string $messenger_name,
-        string $message_type_name,
-        string $current_context = ''
-    ): array {
-        $template_fields = [];
-        /** @type EE_Message_Resource_Manager $Message_Resource_Manager */
-        $Message_Resource_Manager = EE_Registry::instance()->load_lib('Message_Resource_Manager');
-        $messenger                = $Message_Resource_Manager->valid_messenger($messenger_name);
-        $message_type             = $Message_Resource_Manager->valid_message_type($message_type_name);
-        if (! EEH_MSG_Template::message_type_has_active_templates_for_messenger($messenger, $message_type)) {
-            return [];
-        }
-
-        $excluded_fields_for_messenger = $message_type->excludedFieldsForMessenger($messenger_name);
-
-        // okay now let's assemble an array with the messenger template fields added to the message_type contexts.
-        foreach ($message_type->get_contexts() as $context => $details) {
-            if ($current_context && $current_context !== $context) {
-                continue;
-            }
-            foreach ($messenger->get_template_fields() as $field => $value) {
-                if (in_array($field, $excluded_fields_for_messenger, true)) {
-                    continue;
-                }
-                $template_fields[ $context ][ $field ] = $value;
-            }
-        }
-        if (empty($template_fields)) {
-            EE_Error::add_error(
-                esc_html__('Something went wrong and we couldn\'t get any templates assembled', 'event_espresso'),
-                __FILE__,
-                __FUNCTION__,
-                __LINE__
-            );
-            return [];
-        }
-        return $template_fields;
-    }
+	}
+
+
+
+
+
+	/**
+	 * This returns an array with keys as reg statuses and values as the corresponding message type slug (filtered).
+	 *
+	 * @since 4.9.0
+	 * @return array
+	 */
+	public static function reg_status_to_message_type_array()
+	{
+		return (array) apply_filters(
+			'FHEE__EEH_MSG_Template__reg_status_to_message_type_array',
+			array(
+				EEM_Registration::status_id_approved => 'registration',
+				EEM_Registration::status_id_pending_payment => 'pending_approval',
+				EEM_Registration::status_id_not_approved => 'not_approved_registration',
+				EEM_Registration::status_id_cancelled => 'cancelled_registration',
+				EEM_Registration::status_id_declined => 'declined_registration'
+			)
+		);
+	}
+
+
+
+
+	/**
+	 * This returns the corresponding registration message type slug to the given reg status. If there isn't a
+	 * match, then returns an empty string.
+	 *
+	 * @since 4.9.0
+	 * @param $reg_status
+	 * @return string
+	 */
+	public static function convert_reg_status_to_message_type($reg_status)
+	{
+		$reg_status_array = self::reg_status_to_message_type_array();
+		return isset($reg_status_array[ $reg_status ]) ? $reg_status_array[ $reg_status ] : '';
+	}
+
+
+	/**
+	 * This returns an array with keys as payment stati and values as the corresponding message type slug (filtered).
+	 *
+	 * @since 4.9.0
+	 * @return array
+	 */
+	public static function payment_status_to_message_type_array()
+	{
+		return (array) apply_filters(
+			'FHEE__EEH_MSG_Template__payment_status_to_message_type_array',
+			array(
+				EEM_Payment::status_id_approved => 'payment',
+				EEM_Payment::status_id_pending => 'payment_pending',
+				EEM_Payment::status_id_cancelled => 'payment_cancelled',
+				EEM_Payment::status_id_declined => 'payment_declined',
+				EEM_Payment::status_id_failed => 'payment_failed'
+			)
+		);
+	}
+
+
+
+
+	/**
+	 * This returns the corresponding payment message type slug to the given payment status. If there isn't a match then
+	 * an empty string is returned
+	 *
+	 * @since 4.9.0
+	 * @param $payment_status
+	 * @return string
+	 */
+	public static function convert_payment_status_to_message_type($payment_status)
+	{
+		$payment_status_array = self::payment_status_to_message_type_array();
+		return isset($payment_status_array[ $payment_status ]) ? $payment_status_array[ $payment_status ] : '';
+	}
+
+
+	/**
+	 * This is used to retrieve the template pack for the given name.
+	 *
+	 * @param string $template_pack_name  should match the set `dbref` property value on the EE_Messages_Template_Pack.
+	 *
+	 * @return EE_Messages_Template_Pack
+	 */
+	public static function get_template_pack($template_pack_name)
+	{
+		if (! self::$_template_pack_collection instanceof EE_Object_Collection) {
+			self::$_template_pack_collection = new EE_Messages_Template_Pack_Collection();
+		}
+
+		// first see if in collection already
+		$template_pack = self::$_template_pack_collection->get_by_name($template_pack_name);
+
+		if ($template_pack instanceof EE_Messages_Template_Pack) {
+			return $template_pack;
+		}
+
+		// nope...let's get it.
+		// not set yet so let's attempt to get it.
+		$pack_class_name = 'EE_Messages_Template_Pack_' . str_replace(
+			' ',
+			'_',
+			ucwords(
+				str_replace('_', ' ', $template_pack_name)
+			)
+		);
+		if (! class_exists($pack_class_name) && $template_pack_name !== 'default') {
+			return self::get_template_pack('default');
+		} else {
+			$template_pack = new $pack_class_name();
+			self::$_template_pack_collection->add($template_pack);
+			return $template_pack;
+		}
+	}
+
+
+
+
+	/**
+	 * Globs template packs installed in core and returns the template pack collection with all installed template packs
+	 * in it.
+	 *
+	 * @since 4.9.0
+	 *
+	 * @return EE_Messages_Template_Pack_Collection
+	 */
+	public static function get_template_pack_collection()
+	{
+		$new_collection = false;
+		if (! self::$_template_pack_collection instanceof EE_Messages_Template_Pack_Collection) {
+			self::$_template_pack_collection = new EE_Messages_Template_Pack_Collection();
+			$new_collection = true;
+		}
+
+		// glob the defaults directory for messages
+		$templates = glob(EE_LIBRARIES . 'messages/defaults/*', GLOB_ONLYDIR);
+		foreach ($templates as $template_path) {
+			// grab folder name
+			$template = basename($template_path);
+
+			if (! $new_collection) {
+				// already have it?
+				if (self::$_template_pack_collection->get_by_name($template) instanceof EE_Messages_Template_Pack) {
+					continue;
+				}
+			}
+
+			// setup classname.
+			$template_pack_class_name = 'EE_Messages_Template_Pack_' . str_replace(
+				' ',
+				'_',
+				ucwords(
+					str_replace(
+						'_',
+						' ',
+						$template
+					)
+				)
+			);
+			if (! class_exists($template_pack_class_name)) {
+				continue;
+			}
+			self::$_template_pack_collection->add(new $template_pack_class_name());
+		}
+
+		/**
+		 * Filter for plugins to add in any additional template packs
+		 * Note the filter name here is for backward compat, this used to be found in EED_Messages.
+		 */
+		$additional_template_packs = apply_filters('FHEE__EED_Messages__get_template_packs__template_packs', array());
+		foreach ((array) $additional_template_packs as $template_pack) {
+			if (
+				self::$_template_pack_collection->get_by_name(
+					$template_pack->dbref
+				) instanceof EE_Messages_Template_Pack
+			) {
+				continue;
+			}
+			self::$_template_pack_collection->add($template_pack);
+		}
+		return self::$_template_pack_collection;
+	}
+
+
+	/**
+	 * This is a wrapper for the protected _create_new_templates function
+	 *
+	 * @param string $messenger_name
+	 * @param string $message_type_name message type that the templates are being created for
+	 * @param int    $GRP_ID
+	 * @param bool   $global
+	 * @return array
+	 * @throws EE_Error
+	 * @throws ReflectionException
+	 */
+	public static function create_new_templates($messenger_name, $message_type_name, $GRP_ID = 0, $global = false)
+	{
+		/** @type EE_Message_Resource_Manager $Message_Resource_Manager */
+		$Message_Resource_Manager = EE_Registry::instance()->load_lib('Message_Resource_Manager');
+		$messenger = $Message_Resource_Manager->valid_messenger($messenger_name);
+		$message_type = $Message_Resource_Manager->valid_message_type($message_type_name);
+		if (! EEH_MSG_Template::message_type_has_active_templates_for_messenger($messenger, $message_type, $global)) {
+			return array();
+		}
+		// whew made it this far!  Okay, let's go ahead and create the templates then
+		return EEH_MSG_Template::_create_new_templates($messenger, $message_type, $GRP_ID, $global);
+	}
+
+
+	/**
+	 * @param EE_messenger     $messenger
+	 * @param EE_message_type  $message_type
+	 * @param                  $GRP_ID
+	 * @param                  $global
+	 * @return array|mixed
+	 * @throws EE_Error
+	 * @throws ReflectionException
+	 */
+	protected static function _create_new_templates(EE_messenger $messenger, EE_message_type $message_type, $GRP_ID, $global)
+	{
+		// if we're creating a custom template then we don't need to use the defaults class
+		if (! $global) {
+			return EEH_MSG_Template::_create_custom_template_group($messenger, $message_type, $GRP_ID);
+		}
+		/** @type EE_Messages_Template_Defaults $Message_Template_Defaults */
+		$Message_Template_Defaults = EE_Registry::factory(
+			'EE_Messages_Template_Defaults',
+			array( $messenger, $message_type, $GRP_ID )
+		);
+		// generate templates
+		$success = $Message_Template_Defaults->create_new_templates();
+
+		// if creating the template failed.  Then we should deactivate the related message_type for the messenger because
+		// its not active if it doesn't have a template.  Note this is only happening for GLOBAL template creation
+		// attempts.
+		if (! $success) {
+			/** @var EE_Message_Resource_Manager $message_resource_manager */
+			$message_resource_manager = EE_Registry::instance()->load_lib('Message_Resource_Manager');
+			$message_resource_manager->deactivate_message_type_for_messenger($message_type->name, $messenger->name);
+		}
+
+		/**
+		 * $success is in an array in the following format
+		 * array(
+		 *    'GRP_ID' => $new_grp_id,
+		 *    'MTP_context' => $first_context_in_new_templates,
+		 * )
+		 */
+		return $success;
+	}
+
+
+	/**
+	 * This creates a custom template using the incoming GRP_ID
+	 *
+	 * @param EE_messenger    $messenger
+	 * @param EE_message_type $message_type
+	 * @param int             $GRP_ID           GRP_ID for the template_group being used as the base
+	 * @return  array $success              This will be an array in the format:
+	 *                                          array(
+	 *                                          'GRP_ID' => $new_grp_id,
+	 *                                          'MTP_context' => $first_context_in_created_template
+	 *                                          )
+	 * @throws EE_Error
+	 * @throws ReflectionException
+	 * @access private
+	 */
+	private static function _create_custom_template_group(EE_messenger $messenger, EE_message_type $message_type, $GRP_ID)
+	{
+		// defaults
+		$success = array( 'GRP_ID' => null, 'MTP_context' => '' );
+		// get the template group to use as a template from the db.  If $GRP_ID is empty then we'll assume the base will be the global template matching the messenger and message type.
+		$Message_Template_Group = empty($GRP_ID)
+			? EEM_Message_Template_Group::instance()->get_one(
+				array(
+					array(
+						'MTP_messenger'    => $messenger->name,
+						'MTP_message_type' => $message_type->name,
+						'MTP_is_global'    => true
+					)
+				)
+			)
+			: EEM_Message_Template_Group::instance()->get_one_by_ID($GRP_ID);
+		// if we don't have a mtg at this point then we need to bail.
+		if (! $Message_Template_Group instanceof EE_Message_Template_Group) {
+			EE_Error::add_error(
+				sprintf(
+					esc_html__(
+						'Something went wrong with generating the custom template from this group id: %s.  This usually happens when there is no matching message template group in the db.',
+						'event_espresso'
+					),
+					$GRP_ID
+				),
+				__FILE__,
+				__FUNCTION__,
+				__LINE__
+			);
+			return $success;
+		}
+		// let's get all the related message_template objects for this group.
+		$message_templates = $Message_Template_Group->message_templates();
+		// now we have what we need to setup the new template
+		$new_mtg = clone $Message_Template_Group;
+		$new_mtg->set('GRP_ID', 0);
+		$new_mtg->set('MTP_is_global', false);
+
+		/** @var RequestInterface $request */
+		$request = LoaderFactory::getLoader()->getShared(RequestInterface::class);
+		$template_name = $request->isAjax() && $request->requestParamIsSet('templateName')
+			? $request->getRequestParam('templateName')
+			: esc_html__('New Custom Template', 'event_espresso');
+		$template_description = $request->isAjax() && $request->requestParamIsSet('templateDescription')
+			? $request->getRequestParam('templateDescription')
+			: sprintf(
+				esc_html__(
+					'This is a custom template that was created for the %s messenger and %s message type.',
+					'event_espresso'
+				),
+				$new_mtg->messenger_obj()->label['singular'],
+				$new_mtg->message_type_obj()->label['singular']
+			);
+		$new_mtg->set('MTP_name', $template_name);
+		$new_mtg->set('MTP_description', $template_description);
+		// remove ALL relations on this template group so they don't get saved!
+		$new_mtg->_remove_relations('Message_Template');
+		$new_mtg->save();
+		$success['GRP_ID'] = $new_mtg->ID();
+		$success['template_name'] = $template_name;
+		// add new message templates and add relation to.
+		foreach ($message_templates as $message_template) {
+			if (! $message_template instanceof EE_Message_Template) {
+				continue;
+			}
+			$new_message_template = clone $message_template;
+			$new_message_template->set('MTP_ID', 0);
+			$new_message_template->set('GRP_ID', $new_mtg->ID()); // relation
+			$new_message_template->save();
+			if (empty($success['MTP_context']) && $new_message_template->get('MTP_context') !== 'admin') {
+				$success['MTP_context'] = $new_message_template->get('MTP_context');
+			}
+		}
+		return $success;
+	}
+
+
+	/**
+	 * message_type_has_active_templates_for_messenger
+	 *
+	 * @param EE_messenger    $messenger
+	 * @param EE_message_type $message_type
+	 * @param bool            $global
+	 * @return bool
+	 * @throws EE_Error
+	 */
+	public static function message_type_has_active_templates_for_messenger(
+		EE_messenger $messenger,
+		EE_message_type $message_type,
+		$global = false
+	) {
+		// is given message_type valid for given messenger (if this is not a global save)
+		if ($global) {
+			return true;
+		}
+		$active_templates = EEM_Message_Template_Group::instance()->count(
+			array(
+				array(
+					'MTP_is_active'    => true,
+					'MTP_messenger'    => $messenger->name,
+					'MTP_message_type' => $message_type->name
+				)
+			)
+		);
+		if ($active_templates > 0) {
+			return true;
+		}
+		EE_Error::add_error(
+			sprintf(
+				esc_html__(
+					'The %1$s message type is not registered with the %2$s messenger. Please visit the Messenger activation page to assign this message type first if you want to use it.',
+					'event_espresso'
+				),
+				$message_type->name,
+				$messenger->name
+			),
+			__FILE__,
+			__FUNCTION__,
+			__LINE__
+		);
+		return false;
+	}
+
+
+	/**
+	 * get_fields
+	 * This takes a given messenger and message type
+	 * and returns all the template fields indexed by context with field type.
+	 *
+	 * @param string $messenger_name    name of EE_messenger
+	 * @param string $message_type_name name of EE_message_type
+	 * @param string $current_context   current context [optional]
+	 * @return array
+	 * @throws EE_Error
+	 * @throws ReflectionException
+	 */
+	public static function get_fields(
+		string $messenger_name,
+		string $message_type_name,
+		string $current_context = ''
+	): array {
+		$template_fields = [];
+		/** @type EE_Message_Resource_Manager $Message_Resource_Manager */
+		$Message_Resource_Manager = EE_Registry::instance()->load_lib('Message_Resource_Manager');
+		$messenger                = $Message_Resource_Manager->valid_messenger($messenger_name);
+		$message_type             = $Message_Resource_Manager->valid_message_type($message_type_name);
+		if (! EEH_MSG_Template::message_type_has_active_templates_for_messenger($messenger, $message_type)) {
+			return [];
+		}
+
+		$excluded_fields_for_messenger = $message_type->excludedFieldsForMessenger($messenger_name);
+
+		// okay now let's assemble an array with the messenger template fields added to the message_type contexts.
+		foreach ($message_type->get_contexts() as $context => $details) {
+			if ($current_context && $current_context !== $context) {
+				continue;
+			}
+			foreach ($messenger->get_template_fields() as $field => $value) {
+				if (in_array($field, $excluded_fields_for_messenger, true)) {
+					continue;
+				}
+				$template_fields[ $context ][ $field ] = $value;
+			}
+		}
+		if (empty($template_fields)) {
+			EE_Error::add_error(
+				esc_html__('Something went wrong and we couldn\'t get any templates assembled', 'event_espresso'),
+				__FILE__,
+				__FUNCTION__,
+				__LINE__
+			);
+			return [];
+		}
+		return $template_fields;
+	}
 }

Spacing +57 added lines, -57 removed lines

@@ -95,7 +95,7 @@ 
             }
             $new_message_template_group = EEH_MSG_Template::create_new_templates($messenger, $message_type, $GRP_ID, $global);
 
-            if (! $new_message_template_group) {
+            if ( ! $new_message_template_group) {
                 continue;
             }
             $templates[] = $new_message_template_group;
@@ -130,7 +130,7 @@ 
                     )
                 )
             )
-            : EEM_Message_Template::instance()->count(array( array( 'GRP_ID' => $GRP_ID ) ));
+            : EEM_Message_Template::instance()->count(array(array('GRP_ID' => $GRP_ID)));
 
         return $count > 0;
     }
@@ -147,14 +147,14 @@ 
      */
     public static function update_to_active($messenger_names, $message_type_names)
     {
-        $messenger_names = is_array($messenger_names) ? $messenger_names : array( $messenger_names );
-        $message_type_names = is_array($message_type_names) ? $message_type_names : array( $message_type_names );
+        $messenger_names = is_array($messenger_names) ? $messenger_names : array($messenger_names);
+        $message_type_names = is_array($message_type_names) ? $message_type_names : array($message_type_names);
         return EEM_Message_Template_Group::instance()->update(
-            array( 'MTP_is_active' => 1 ),
+            array('MTP_is_active' => 1),
             array(
                 array(
-                    'MTP_messenger'     => array( 'IN', $messenger_names ),
-                    'MTP_message_type'  => array( 'IN', $message_type_names )
+                    'MTP_messenger'     => array('IN', $messenger_names),
+                    'MTP_message_type'  => array('IN', $message_type_names)
                 )
             )
         );
@@ -242,13 +242,13 @@ 
         $messenger = $message_resource_manager->get_messenger($messenger);
 
         // if messenger isn't a EE_messenger resource then bail.
-        if (! $messenger instanceof EE_messenger) {
+        if ( ! $messenger instanceof EE_messenger) {
             return array();
         }
 
         // validate class for getting our list of shortcodes
-        $classname = 'EE_Messages_' . $messenger_name . '_' . $mt_name . '_Validator';
-        if (! class_exists($classname)) {
+        $classname = 'EE_Messages_'.$messenger_name.'_'.$mt_name.'_Validator';
+        if ( ! class_exists($classname)) {
             $msg[] = esc_html__('The Validator class was unable to load', 'event_espresso');
             $msg[] = sprintf(
                 esc_html__('The class name compiled was %s. Please check and make sure the spelling and case is correct for the class name and that there is an autoloader in place for this class', 'event_espresso'),
@@ -264,44 +264,44 @@ 
         // let's make sure we're only getting the shortcode part of the validators
         $shortcodes = array();
         foreach ($valid_shortcodes as $field => $validators) {
-            $shortcodes[ $field ] = $validators['shortcodes'];
+            $shortcodes[$field] = $validators['shortcodes'];
         }
         $valid_shortcodes = $shortcodes;
 
         // if not all fields let's make sure we ONLY include the shortcodes for the specified fields.
-        if (! empty($fields)) {
+        if ( ! empty($fields)) {
             $specified_shortcodes = array();
             foreach ($fields as $field) {
-                if (isset($valid_shortcodes[ $field ])) {
-                    $specified_shortcodes[ $field ] = $valid_shortcodes[ $field ];
+                if (isset($valid_shortcodes[$field])) {
+                    $specified_shortcodes[$field] = $valid_shortcodes[$field];
                 }
             }
             $valid_shortcodes = $specified_shortcodes;
         }
 
         // if not merged then let's replace the fields with the localized fields
-        if (! $merged) {
+        if ( ! $merged) {
             // let's get all the fields for the set messenger so that we can get the localized label and use that in the returned array.
             $field_settings = $messenger->get_template_fields();
             $localized = array();
             foreach ($valid_shortcodes as $field => $shortcodes) {
                 // get localized field label
-                if (isset($field_settings[ $field ])) {
+                if (isset($field_settings[$field])) {
                     // possible that this is used as a main field.
-                    if (empty($field_settings[ $field ])) {
-                        if (isset($field_settings['extra'][ $field ])) {
-                            $_field = $field_settings['extra'][ $field ]['main']['label'];
+                    if (empty($field_settings[$field])) {
+                        if (isset($field_settings['extra'][$field])) {
+                            $_field = $field_settings['extra'][$field]['main']['label'];
                         } else {
                             $_field = $field;
                         }
                     } else {
-                        $_field = $field_settings[ $field ]['label'];
+                        $_field = $field_settings[$field]['label'];
                     }
                 } elseif (isset($field_settings['extra'])) {
                     // loop through extra "main fields" and see if any of their children have our field
                     foreach ($field_settings['extra'] as $fields) {
-                        if (isset($fields[ $field ])) {
-                            $_field = $fields[ $field ]['label'];
+                        if (isset($fields[$field])) {
+                            $_field = $fields[$field]['label'];
                         } else {
                             $_field = $field;
                         }
@@ -310,7 +310,7 @@ 
                     $_field = $field;
                 }
                 if (isset($_field)) {
-                    $localized[ (string) $_field ] = $shortcodes;
+                    $localized[(string) $_field] = $shortcodes;
                 }
             }
             $valid_shortcodes = $localized;
@@ -321,10 +321,10 @@ 
             $merged_codes = array();
             foreach ($valid_shortcodes as $shortcode) {
                 foreach ($shortcode as $code => $label) {
-                    if (isset($merged_codes[ $code ])) {
+                    if (isset($merged_codes[$code])) {
                         continue;
                     } else {
-                        $merged_codes[ $code ] = $label;
+                        $merged_codes[$code] = $label;
                     }
                 }
             }
@@ -475,12 +475,12 @@ 
         $sending_messenger = ''
     ) {
         // first determine if the url can be to the EE_Message object.
-        if (! $message_type->always_generate()) {
+        if ( ! $message_type->always_generate()) {
             return EEH_MSG_Template::generate_browser_trigger($message);
         }
 
         // if $registration object is not valid then exit early because there's nothing that can be generated.
-        if (! $registration instanceof EE_Registration) {
+        if ( ! $registration instanceof EE_Registration) {
             throw new EE_Error(
                 esc_html__('Incoming value for registration is not a valid EE_Registration object.', 'event_espresso')
             );
@@ -488,7 +488,7 @@ 
 
         // validate given context
         $contexts = $message_type->get_contexts();
-        if ($message->context() !== '' && ! isset($contexts[ $message->context() ])) {
+        if ($message->context() !== '' && ! isset($contexts[$message->context()])) {
             throw new EE_Error(
                 sprintf(
                     esc_html__('The context %s is not a valid context for %s.', 'event_espresso'),
@@ -499,11 +499,11 @@ 
         }
 
         // valid sending messenger but only if sending messenger set.  Otherwise generating messenger is used.
-        if (! empty($sending_messenger)) {
+        if ( ! empty($sending_messenger)) {
             $with_messengers = $message_type->with_messengers();
             if (
-                ! isset($with_messengers[ $message->messenger() ])
-                 || ! in_array($sending_messenger, $with_messengers[ $message->messenger() ])
+                ! isset($with_messengers[$message->messenger()])
+                 || ! in_array($sending_messenger, $with_messengers[$message->messenger()])
             ) {
                 throw new EE_Error(
                     sprintf(
@@ -636,7 +636,7 @@ 
     public static function get_message_action_icon($type)
     {
         $action_icons = self::get_message_action_icons();
-        return isset($action_icons[ $type ]) ? $action_icons[ $type ] : [];
+        return isset($action_icons[$type]) ? $action_icons[$type] : [];
     }
 
 
@@ -701,7 +701,7 @@ 
     public static function get_message_action_url($type, EE_Message $message = null, $query_params = array())
     {
         $action_urls = self::get_message_action_urls($message, $query_params);
-        return isset($action_urls[ $type ])  ? $action_urls[ $type ] : '';
+        return isset($action_urls[$type]) ? $action_urls[$type] : '';
     }
 
 
@@ -722,7 +722,7 @@ 
         EE_Registry::instance()->load_helper('URL');
         // if $message is not an instance of EE_Message then let's just do a dummy.
         $message = empty($message) ? EE_Message_Factory::create() : $message;
-        $action_urls =  apply_filters(
+        $action_urls = apply_filters(
             'FHEE__EEH_MSG_Template__get_message_action_url',
             array(
                 'view' => EEH_MSG_Template::generate_browser_trigger($message),
@@ -806,7 +806,7 @@ 
         $url = EEH_MSG_Template::get_message_action_url($type, $message, $query_params);
         $icon_css = EEH_MSG_Template::get_message_action_icon($type);
         $label = $icon_css['label'] ?? null;
-        $label = $label ? 'aria-label="' . $label . '"' : '';
+        $label = $label ? 'aria-label="'.$label.'"' : '';
         $class = $label ? ' ee-aria-tooltip' : '';
 
         if (empty($url) || empty($icon_css) || ! isset($icon_css['css_class'])) {
@@ -816,7 +816,7 @@ 
         $icon_css['css_class'] .= esc_attr(
             apply_filters(
                 'FHEE__EEH_MSG_Template__get_message_action_link__icon_css_class',
-                ' js-ee-message-action-link ee-message-action-link-' . $type,
+                ' js-ee-message-action-link ee-message-action-link-'.$type,
                 $type,
                 $message,
                 $query_params
@@ -824,8 +824,8 @@ 
         );
 
         return '
-            <a href="' . $url . '" ' . $label . ' class="button button--icon-only' . $class . '">
-                <span class="' . esc_attr($icon_css['css_class']) . '"></span>
+            <a href="' . $url.'" '.$label.' class="button button--icon-only'.$class.'">
+                <span class="' . esc_attr($icon_css['css_class']).'"></span>
             </a>';
     }
 
@@ -867,7 +867,7 @@ 
     public static function convert_reg_status_to_message_type($reg_status)
     {
         $reg_status_array = self::reg_status_to_message_type_array();
-        return isset($reg_status_array[ $reg_status ]) ? $reg_status_array[ $reg_status ] : '';
+        return isset($reg_status_array[$reg_status]) ? $reg_status_array[$reg_status] : '';
     }
 
 
@@ -905,7 +905,7 @@ 
     public static function convert_payment_status_to_message_type($payment_status)
     {
         $payment_status_array = self::payment_status_to_message_type_array();
-        return isset($payment_status_array[ $payment_status ]) ? $payment_status_array[ $payment_status ] : '';
+        return isset($payment_status_array[$payment_status]) ? $payment_status_array[$payment_status] : '';
     }
 
 
@@ -918,7 +918,7 @@ 
      */
     public static function get_template_pack($template_pack_name)
     {
-        if (! self::$_template_pack_collection instanceof EE_Object_Collection) {
+        if ( ! self::$_template_pack_collection instanceof EE_Object_Collection) {
             self::$_template_pack_collection = new EE_Messages_Template_Pack_Collection();
         }
 
@@ -931,14 +931,14 @@ 
 
         // nope...let's get it.
         // not set yet so let's attempt to get it.
-        $pack_class_name = 'EE_Messages_Template_Pack_' . str_replace(
+        $pack_class_name = 'EE_Messages_Template_Pack_'.str_replace(
             ' ',
             '_',
             ucwords(
                 str_replace('_', ' ', $template_pack_name)
             )
         );
-        if (! class_exists($pack_class_name) && $template_pack_name !== 'default') {
+        if ( ! class_exists($pack_class_name) && $template_pack_name !== 'default') {
             return self::get_template_pack('default');
         } else {
             $template_pack = new $pack_class_name();
@@ -961,18 +961,18 @@ 
     public static function get_template_pack_collection()
     {
         $new_collection = false;
-        if (! self::$_template_pack_collection instanceof EE_Messages_Template_Pack_Collection) {
+        if ( ! self::$_template_pack_collection instanceof EE_Messages_Template_Pack_Collection) {
             self::$_template_pack_collection = new EE_Messages_Template_Pack_Collection();
             $new_collection = true;
         }
 
         // glob the defaults directory for messages
-        $templates = glob(EE_LIBRARIES . 'messages/defaults/*', GLOB_ONLYDIR);
+        $templates = glob(EE_LIBRARIES.'messages/defaults/*', GLOB_ONLYDIR);
         foreach ($templates as $template_path) {
             // grab folder name
             $template = basename($template_path);
 
-            if (! $new_collection) {
+            if ( ! $new_collection) {
                 // already have it?
                 if (self::$_template_pack_collection->get_by_name($template) instanceof EE_Messages_Template_Pack) {
                     continue;
@@ -980,7 +980,7 @@ 
             }
 
             // setup classname.
-            $template_pack_class_name = 'EE_Messages_Template_Pack_' . str_replace(
+            $template_pack_class_name = 'EE_Messages_Template_Pack_'.str_replace(
                 ' ',
                 '_',
                 ucwords(
@@ -991,7 +991,7 @@ 
                     )
                 )
             );
-            if (! class_exists($template_pack_class_name)) {
+            if ( ! class_exists($template_pack_class_name)) {
                 continue;
             }
             self::$_template_pack_collection->add(new $template_pack_class_name());
@@ -1033,7 +1033,7 @@ 
         $Message_Resource_Manager = EE_Registry::instance()->load_lib('Message_Resource_Manager');
         $messenger = $Message_Resource_Manager->valid_messenger($messenger_name);
         $message_type = $Message_Resource_Manager->valid_message_type($message_type_name);
-        if (! EEH_MSG_Template::message_type_has_active_templates_for_messenger($messenger, $message_type, $global)) {
+        if ( ! EEH_MSG_Template::message_type_has_active_templates_for_messenger($messenger, $message_type, $global)) {
             return array();
         }
         // whew made it this far!  Okay, let's go ahead and create the templates then
@@ -1053,13 +1053,13 @@ 
     protected static function _create_new_templates(EE_messenger $messenger, EE_message_type $message_type, $GRP_ID, $global)
     {
         // if we're creating a custom template then we don't need to use the defaults class
-        if (! $global) {
+        if ( ! $global) {
             return EEH_MSG_Template::_create_custom_template_group($messenger, $message_type, $GRP_ID);
         }
         /** @type EE_Messages_Template_Defaults $Message_Template_Defaults */
         $Message_Template_Defaults = EE_Registry::factory(
             'EE_Messages_Template_Defaults',
-            array( $messenger, $message_type, $GRP_ID )
+            array($messenger, $message_type, $GRP_ID)
         );
         // generate templates
         $success = $Message_Template_Defaults->create_new_templates();
@@ -1067,7 +1067,7 @@ 
         // if creating the template failed.  Then we should deactivate the related message_type for the messenger because
         // its not active if it doesn't have a template.  Note this is only happening for GLOBAL template creation
         // attempts.
-        if (! $success) {
+        if ( ! $success) {
             /** @var EE_Message_Resource_Manager $message_resource_manager */
             $message_resource_manager = EE_Registry::instance()->load_lib('Message_Resource_Manager');
             $message_resource_manager->deactivate_message_type_for_messenger($message_type->name, $messenger->name);
@@ -1102,7 +1102,7 @@ 
     private static function _create_custom_template_group(EE_messenger $messenger, EE_message_type $message_type, $GRP_ID)
     {
         // defaults
-        $success = array( 'GRP_ID' => null, 'MTP_context' => '' );
+        $success = array('GRP_ID' => null, 'MTP_context' => '');
         // get the template group to use as a template from the db.  If $GRP_ID is empty then we'll assume the base will be the global template matching the messenger and message type.
         $Message_Template_Group = empty($GRP_ID)
             ? EEM_Message_Template_Group::instance()->get_one(
@@ -1116,7 +1116,7 @@ 
             )
             : EEM_Message_Template_Group::instance()->get_one_by_ID($GRP_ID);
         // if we don't have a mtg at this point then we need to bail.
-        if (! $Message_Template_Group instanceof EE_Message_Template_Group) {
+        if ( ! $Message_Template_Group instanceof EE_Message_Template_Group) {
             EE_Error::add_error(
                 sprintf(
                     esc_html__(
@@ -1162,7 +1162,7 @@ 
         $success['template_name'] = $template_name;
         // add new message templates and add relation to.
         foreach ($message_templates as $message_template) {
-            if (! $message_template instanceof EE_Message_Template) {
+            if ( ! $message_template instanceof EE_Message_Template) {
                 continue;
             }
             $new_message_template = clone $message_template;
@@ -1246,7 +1246,7 @@ 
         $Message_Resource_Manager = EE_Registry::instance()->load_lib('Message_Resource_Manager');
         $messenger                = $Message_Resource_Manager->valid_messenger($messenger_name);
         $message_type             = $Message_Resource_Manager->valid_message_type($message_type_name);
-        if (! EEH_MSG_Template::message_type_has_active_templates_for_messenger($messenger, $message_type)) {
+        if ( ! EEH_MSG_Template::message_type_has_active_templates_for_messenger($messenger, $message_type)) {
             return [];
         }
 
@@ -1261,7 +1261,7 @@ 
                 if (in_array($field, $excluded_fields_for_messenger, true)) {
                     continue;
                 }
-                $template_fields[ $context ][ $field ] = $value;
+                $template_fields[$context][$field] = $value;
             }
         }
         if (empty($template_fields)) {