eventespresso / event-espresso-core

core/domain/Domain.php

Indentation +41 added lines, -41 removed lines

@@ -19,54 +19,54 @@
 class Domain extends DomainBase implements CaffeinatedInterface
 {
 
-    /**
-     * URL path component used to denote an API request
-     */
-    const API_NAMESPACE = 'ee/v';
+	/**
+	 * URL path component used to denote an API request
+	 */
+	const API_NAMESPACE = 'ee/v';
 
-    /**
-     * Slug used for the context where a registration status is changed from a manual trigger in the Registration Admin
-     * Page ui.
-     */
-    const CONTEXT_REGISTRATION_STATUS_CHANGE_REGISTRATION_ADMIN
-        = 'manual_registration_status_change_from_registration_admin';
+	/**
+	 * Slug used for the context where a registration status is changed from a manual trigger in the Registration Admin
+	 * Page ui.
+	 */
+	const CONTEXT_REGISTRATION_STATUS_CHANGE_REGISTRATION_ADMIN
+		= 'manual_registration_status_change_from_registration_admin';
 
-    const CONTEXT_REGISTRATION_STATUS_CHANGE_REGISTRATION_ADMIN_NOTIFY
-        = 'manual_registration_status_change_from_registration_admin_and_notify';
+	const CONTEXT_REGISTRATION_STATUS_CHANGE_REGISTRATION_ADMIN_NOTIFY
+		= 'manual_registration_status_change_from_registration_admin_and_notify';
 
 
-    /**
-     * Whether or not EE core is the full premium version.
-     * @since $VID:$
-     * @var bool
-     */
-    private $caffeinated;
+	/**
+	 * Whether or not EE core is the full premium version.
+	 * @since $VID:$
+	 * @var bool
+	 */
+	private $caffeinated;
 
 
-    public function __construct(FilePath $plugin_file, Version $version)
-    {
-        parent::__construct($plugin_file, $version);
-        $this->setCaffeinated();
-    }
+	public function __construct(FilePath $plugin_file, Version $version)
+	{
+		parent::__construct($plugin_file, $version);
+		$this->setCaffeinated();
+	}
 
-    /**
-     * Whether or not EE core is the full premium version.
-     * @since $VID:$
-     * @return bool
-     */
-    public function isCaffeinated()
-    {
-        return $this->caffeinated;
-    }
+	/**
+	 * Whether or not EE core is the full premium version.
+	 * @since $VID:$
+	 * @return bool
+	 */
+	public function isCaffeinated()
+	{
+		return $this->caffeinated;
+	}
 
 
-    /**
-     * Setter for $is_caffeinated property.
-     * @since $VID:$
-     */
-    private function setCaffeinated()
-    {
-        $this->caffeinated = (! defined('EE_DECAF') || EE_DECAF !== true)
-            && is_readable($this->pluginPath() . 'caffeinated/brewing_regular.php');
-    }
+	/**
+	 * Setter for $is_caffeinated property.
+	 * @since $VID:$
+	 */
+	private function setCaffeinated()
+	{
+		$this->caffeinated = (! defined('EE_DECAF') || EE_DECAF !== true)
+			&& is_readable($this->pluginPath() . 'caffeinated/brewing_regular.php');
+	}
 }

Spacing +2 added lines, -2 removed lines

@@ -66,7 +66,7 @@
      */
     private function setCaffeinated()
     {
-        $this->caffeinated = (! defined('EE_DECAF') || EE_DECAF !== true)
-            && is_readable($this->pluginPath() . 'caffeinated/brewing_regular.php');
+        $this->caffeinated = ( ! defined('EE_DECAF') || EE_DECAF !== true)
+            && is_readable($this->pluginPath().'caffeinated/brewing_regular.php');
     }
 }

core/admin/EE_Admin.core.php

Indentation +915 added lines, -915 removed lines

@@ -23,458 +23,458 @@ 
 final class EE_Admin implements InterminableInterface
 {
 
-    /**
-     * @var EE_Admin $_instance
-     */
-    private static $_instance;
-
-    /**
-     * @var PersistentAdminNoticeManager $persistent_admin_notice_manager
-     */
-    private $persistent_admin_notice_manager;
-
-    /**
-     * @singleton method used to instantiate class object
-     * @return EE_Admin
-     * @throws EE_Error
-     */
-    public static function instance()
-    {
-        // check if class object is instantiated
-        if (! self::$_instance instanceof EE_Admin) {
-            self::$_instance = new self();
-        }
-        return self::$_instance;
-    }
-
-
-    /**
-     * @return EE_Admin
-     * @throws EE_Error
-     */
-    public static function reset()
-    {
-        self::$_instance = null;
-        return self::instance();
-    }
-
-
-    /**
-     * class constructor
-     *
-     * @throws EE_Error
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     * @throws InvalidArgumentException
-     */
-    protected function __construct()
-    {
-        // define global EE_Admin constants
-        $this->_define_all_constants();
-        // set autoloaders for our admin page classes based on included path information
-        EEH_Autoloader::instance()->register_autoloaders_for_each_file_in_folder(EE_ADMIN);
-        // admin hooks
-        add_filter('plugin_action_links', array($this, 'filter_plugin_actions'), 10, 2);
-        // load EE_Request_Handler early
-        add_action('AHEE__EE_System__core_loaded_and_ready', array($this, 'get_request'));
-        add_action('AHEE__EE_System__initialize_last', array($this, 'init'));
-        add_action('AHEE__EE_Admin_Page__route_admin_request', array($this, 'route_admin_request'), 100, 2);
-        add_action('wp_loaded', array($this, 'wp_loaded'), 100);
-        add_action('admin_init', array($this, 'admin_init'), 100);
-        add_action('admin_enqueue_scripts', array($this, 'enqueue_admin_scripts'), 20);
-        add_action('admin_notices', array($this, 'display_admin_notices'), 10);
-        add_action('network_admin_notices', array($this, 'display_admin_notices'), 10);
-        add_filter('pre_update_option', array($this, 'check_for_invalid_datetime_formats'), 100, 2);
-        add_filter('admin_footer_text', array($this, 'espresso_admin_footer'));
-        add_action('load-plugins.php', array($this, 'hookIntoWpPluginsPage'));
-        //reset Environment config (we only do this on admin page loads);
-        EE_Registry::instance()->CFG->environment->recheck_values();
-        do_action('AHEE__EE_Admin__loaded');
-    }
-
-
-
-    /**
-     * _define_all_constants
-     * define constants that are set globally for all admin pages
-     *
-     * @return void
-     */
-    private function _define_all_constants()
-    {
-        if (! defined('EE_ADMIN_URL')) {
-            define('EE_ADMIN_URL', EE_PLUGIN_DIR_URL . 'core/admin/');
-            define('EE_ADMIN_PAGES_URL', EE_PLUGIN_DIR_URL . 'admin_pages/');
-            define('EE_ADMIN_TEMPLATE', EE_ADMIN . 'templates' . DS);
-            define('WP_ADMIN_PATH', ABSPATH . 'wp-admin/');
-            define('WP_AJAX_URL', admin_url('admin-ajax.php'));
-        }
-    }
-
-
-    /**
-     * filter_plugin_actions - adds links to the Plugins page listing
-     *
-     * @param    array  $links
-     * @param    string $plugin
-     * @return    array
-     */
-    public function filter_plugin_actions($links, $plugin)
-    {
-        // set $main_file in stone
-        static $main_file;
-        // if $main_file is not set yet
-        if (! $main_file) {
-            $main_file = plugin_basename(EVENT_ESPRESSO_MAIN_FILE);
-        }
-        if ($plugin === $main_file) {
-            // compare current plugin to this one
-            if (EE_Maintenance_Mode::instance()->level() === EE_Maintenance_Mode::level_2_complete_maintenance) {
-                $maintenance_link = '<a href="admin.php?page=espresso_maintenance_settings"'
-                                    . ' title="Event Espresso is in maintenance mode.  Click this link to learn why.">'
-                                    . esc_html__('Maintenance Mode Active', 'event_espresso')
-                                    . '</a>';
-                array_unshift($links, $maintenance_link);
-            } else {
-                $org_settings_link = '<a href="admin.php?page=espresso_general_settings">'
-                                     . esc_html__('Settings', 'event_espresso')
-                                     . '</a>';
-                $events_link       = '<a href="admin.php?page=espresso_events">'
-                                     . esc_html__('Events', 'event_espresso')
-                                     . '</a>';
-                // add before other links
-                array_unshift($links, $org_settings_link, $events_link);
-            }
-        }
-        return $links;
-    }
-
-
-    /**
-     * _get_request
-     *
-     * @return void
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     * @throws ReflectionException
-     */
-    public function get_request()
-    {
-        EE_Registry::instance()->load_core('Request_Handler');
-        EE_Registry::instance()->load_core('CPT_Strategy');
-    }
-
-
-
-    /**
-     * hide_admin_pages_except_maintenance_mode
-     *
-     * @param array $admin_page_folder_names
-     * @return array
-     */
-    public function hide_admin_pages_except_maintenance_mode($admin_page_folder_names = array())
-    {
-        return array(
-            'maintenance' => EE_ADMIN_PAGES . 'maintenance' . DS,
-            'about'       => EE_ADMIN_PAGES . 'about' . DS,
-            'support'     => EE_ADMIN_PAGES . 'support' . DS,
-        );
-    }
-
-
-
-    /**
-     * init- should fire after shortcode, module,  addon, other plugin (default priority), and even
-     * EE_Front_Controller's init phases have run
-     *
-     * @return void
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     * @throws ReflectionException
-     * @throws ServiceNotFoundException
-     */
-    public function init()
-    {
-        //only enable most of the EE_Admin IF we're not in full maintenance mode
-        if (EE_Maintenance_Mode::instance()->models_can_query()) {
-            //ok so we want to enable the entire admin
-            $this->persistent_admin_notice_manager = LoaderFactory::getLoader()->getShared(
-                'EventEspresso\core\services\notifications\PersistentAdminNoticeManager'
-            );
-            $this->persistent_admin_notice_manager->setReturnUrl(
-                EE_Admin_Page::add_query_args_and_nonce(
-                    array(
-                        'page'   => EE_Registry::instance()->REQ->get('page', ''),
-                        'action' => EE_Registry::instance()->REQ->get('action', ''),
-                    ),
-                    EE_ADMIN_URL
-                )
-            );
-            $this->maybeSetDatetimeWarningNotice();
-            //at a glance dashboard widget
-            add_filter('dashboard_glance_items', array($this, 'dashboard_glance_items'), 10);
-            //filter for get_edit_post_link used on comments for custom post types
-            add_filter('get_edit_post_link', array($this, 'modify_edit_post_link'), 10, 2);
-        }
-        // run the admin page factory but ONLY if we are doing an ee admin ajax request
-        if (! defined('DOING_AJAX') || EE_ADMIN_AJAX) {
-            try {
-                //this loads the controller for the admin pages which will setup routing etc
-                EE_Registry::instance()->load_core('Admin_Page_Loader');
-            } catch (EE_Error $e) {
-                $e->get_error();
-            }
-        }
-        add_filter('content_save_pre', array($this, 'its_eSpresso'), 10, 1);
-        //make sure our CPTs and custom taxonomy metaboxes get shown for first time users
-        add_action('admin_head', array($this, 'enable_hidden_ee_nav_menu_metaboxes'), 10);
-        add_action('admin_head', array($this, 'register_custom_nav_menu_boxes'), 10);
-        //exclude EE critical pages from all nav menus and wp_list_pages
-        add_filter('nav_menu_meta_box_object', array($this, 'remove_pages_from_nav_menu'), 10);
-    }
-
-
-    /**
-     *    get_persistent_admin_notices
-     *
-     * @access    public
-     * @return void
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     */
-    public function maybeSetDatetimeWarningNotice()
-    {
-        //add dismissable notice for datetime changes.  Only valid if site does not have a timezone_string set.
-        //@todo This needs to stay in core for a bit to catch anyone upgrading from a version without this to a version
-        //with this.  But after enough time (indeterminate at this point) we can just remove this notice.
-        //this was added with https://events.codebasehq.com/projects/event-espresso/tickets/10626
-        if (apply_filters('FHEE__EE_Admin__maybeSetDatetimeWarningNotice', true)
-            && ! get_option('timezone_string')
-            && EEM_Event::instance()->count() > 0
-        ) {
-            new PersistentAdminNotice(
-                'datetime_fix_notice',
-                sprintf(
-                    esc_html__(
-                        '%1$sImportant announcement related to your install of Event Espresso%2$s: There are some changes made to your site that could affect how dates display for your events and other related items with dates and times.  Read more about it %3$shere%4$s. If your dates and times are displaying incorrectly (incorrect offset), you can fix it using the tool on %5$sthis page%4$s.',
-                        'event_espresso'
-                    ),
-                    '<strong>',
-                    '</strong>',
-                    '<a href="https://eventespresso.com/2017/08/important-upcoming-changes-dates-times">',
-                    '</a>',
-                    '<a href="' . EE_Admin_Page::add_query_args_and_nonce(
-                        array(
-                            'page' => 'espresso_maintenance_settings',
-                            'action' => 'datetime_tools'
-                        ),
-                        admin_url('admin.php')
-                    ) . '">'
-                ),
-                false,
-                'manage_options',
-                'datetime_fix_persistent_notice'
-            );
-        }
-    }
-
-
-
-    /**
-     * this simply hooks into the nav menu setup of pages metabox and makes sure that we remove EE critical pages from
-     * the list of options. the wp function "wp_nav_menu_item_post_type_meta_box" found in
-     * wp-admin/includes/nav-menu.php looks for the "_default_query" property on the post_type object and it uses that
-     * to override any queries found in the existing query for the given post type.  Note that _default_query is not a
-     * normal property on the post_type object.  It's found ONLY in this particular context.
-     *
-     * @param WP_Post $post_type WP post type object
-     * @return WP_Post
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     */
-    public function remove_pages_from_nav_menu($post_type)
-    {
-        //if this isn't the "pages" post type let's get out
-        if ($post_type->name !== 'page') {
-            return $post_type;
-        }
-        $critical_pages = EE_Registry::instance()->CFG->core->get_critical_pages_array();
-        $post_type->_default_query = array(
-            'post__not_in' => $critical_pages,
-        );
-        return $post_type;
-    }
-
-
-
-    /**
-     * WP by default only shows three metaboxes in "nav-menus.php" for first times users.  We want to make sure our
-     * metaboxes get shown as well
-     *
-     * @return void
-     */
-    public function enable_hidden_ee_nav_menu_metaboxes()
-    {
-        global $wp_meta_boxes, $pagenow;
-        if (! is_array($wp_meta_boxes) || $pagenow !== 'nav-menus.php') {
-            return;
-        }
-        $user = wp_get_current_user();
-        //has this been done yet?
-        if (get_user_option('ee_nav_menu_initialized', $user->ID)) {
-            return;
-        }
-
-        $hidden_meta_boxes  = get_user_option('metaboxhidden_nav-menus', $user->ID);
-        $initial_meta_boxes = apply_filters(
-            'FHEE__EE_Admin__enable_hidden_ee_nav_menu_boxes__initial_meta_boxes',
-            array(
-                'nav-menu-theme-locations',
-                'add-page',
-                'add-custom-links',
-                'add-category',
-                'add-espresso_events',
-                'add-espresso_venues',
-                'add-espresso_event_categories',
-                'add-espresso_venue_categories',
-                'add-post-type-post',
-                'add-post-type-page',
-            )
-        );
-
-        if (is_array($hidden_meta_boxes)) {
-            foreach ($hidden_meta_boxes as $key => $meta_box_id) {
-                if (in_array($meta_box_id, $initial_meta_boxes, true)) {
-                    unset($hidden_meta_boxes[$key]);
-                }
-            }
-        }
-        update_user_option($user->ID, 'metaboxhidden_nav-menus', $hidden_meta_boxes, true);
-        update_user_option($user->ID, 'ee_nav_menu_initialized', 1, true);
-    }
-
-
-
-    /**
-     * This method simply registers custom nav menu boxes for "nav_menus.php route"
-     * Currently EE is using this to make sure there are menu options for our CPT archive page routes.
-     *
-     * @todo   modify this so its more dynamic and automatic for all ee CPTs and setups and can also be hooked into by
-     *         addons etc.
-     * @return void
-     */
-    public function register_custom_nav_menu_boxes()
-    {
-        add_meta_box(
-            'add-extra-nav-menu-pages',
-            esc_html__('Event Espresso Pages', 'event_espresso'),
-            array($this, 'ee_cpt_archive_pages'),
-            'nav-menus',
-            'side',
-            'core'
-        );
-    }
-
-
-
-    /**
-     * Use this to edit the post link for our cpts so that the edit link points to the correct page.
-     *
-     * @since   4.3.0
-     * @param string $link the original link generated by wp
-     * @param int    $id   post id
-     * @return string  the (maybe) modified link
-     */
-    public function modify_edit_post_link($link, $id)
-    {
-        if (! $post = get_post($id)) {
-            return $link;
-        }
-        if ($post->post_type === 'espresso_attendees') {
-            $query_args = array(
-                'action' => 'edit_attendee',
-                'post'   => $id,
-            );
-            return EEH_URL::add_query_args_and_nonce(
-                $query_args,
-                admin_url('admin.php?page=espresso_registrations')
-            );
-        }
-        return $link;
-    }
-
-
-
-    public function ee_cpt_archive_pages()
-    {
-        global $nav_menu_selected_id;
-        $db_fields   = false;
-        $walker      = new Walker_Nav_Menu_Checklist($db_fields);
-        $current_tab = 'event-archives';
-        $removed_args = array(
-            'action',
-            'customlink-tab',
-            'edit-menu-item',
-            'menu-item',
-            'page-tab',
-            '_wpnonce',
-        );
-        ?>
+	/**
+	 * @var EE_Admin $_instance
+	 */
+	private static $_instance;
+
+	/**
+	 * @var PersistentAdminNoticeManager $persistent_admin_notice_manager
+	 */
+	private $persistent_admin_notice_manager;
+
+	/**
+	 * @singleton method used to instantiate class object
+	 * @return EE_Admin
+	 * @throws EE_Error
+	 */
+	public static function instance()
+	{
+		// check if class object is instantiated
+		if (! self::$_instance instanceof EE_Admin) {
+			self::$_instance = new self();
+		}
+		return self::$_instance;
+	}
+
+
+	/**
+	 * @return EE_Admin
+	 * @throws EE_Error
+	 */
+	public static function reset()
+	{
+		self::$_instance = null;
+		return self::instance();
+	}
+
+
+	/**
+	 * class constructor
+	 *
+	 * @throws EE_Error
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidArgumentException
+	 */
+	protected function __construct()
+	{
+		// define global EE_Admin constants
+		$this->_define_all_constants();
+		// set autoloaders for our admin page classes based on included path information
+		EEH_Autoloader::instance()->register_autoloaders_for_each_file_in_folder(EE_ADMIN);
+		// admin hooks
+		add_filter('plugin_action_links', array($this, 'filter_plugin_actions'), 10, 2);
+		// load EE_Request_Handler early
+		add_action('AHEE__EE_System__core_loaded_and_ready', array($this, 'get_request'));
+		add_action('AHEE__EE_System__initialize_last', array($this, 'init'));
+		add_action('AHEE__EE_Admin_Page__route_admin_request', array($this, 'route_admin_request'), 100, 2);
+		add_action('wp_loaded', array($this, 'wp_loaded'), 100);
+		add_action('admin_init', array($this, 'admin_init'), 100);
+		add_action('admin_enqueue_scripts', array($this, 'enqueue_admin_scripts'), 20);
+		add_action('admin_notices', array($this, 'display_admin_notices'), 10);
+		add_action('network_admin_notices', array($this, 'display_admin_notices'), 10);
+		add_filter('pre_update_option', array($this, 'check_for_invalid_datetime_formats'), 100, 2);
+		add_filter('admin_footer_text', array($this, 'espresso_admin_footer'));
+		add_action('load-plugins.php', array($this, 'hookIntoWpPluginsPage'));
+		//reset Environment config (we only do this on admin page loads);
+		EE_Registry::instance()->CFG->environment->recheck_values();
+		do_action('AHEE__EE_Admin__loaded');
+	}
+
+
+
+	/**
+	 * _define_all_constants
+	 * define constants that are set globally for all admin pages
+	 *
+	 * @return void
+	 */
+	private function _define_all_constants()
+	{
+		if (! defined('EE_ADMIN_URL')) {
+			define('EE_ADMIN_URL', EE_PLUGIN_DIR_URL . 'core/admin/');
+			define('EE_ADMIN_PAGES_URL', EE_PLUGIN_DIR_URL . 'admin_pages/');
+			define('EE_ADMIN_TEMPLATE', EE_ADMIN . 'templates' . DS);
+			define('WP_ADMIN_PATH', ABSPATH . 'wp-admin/');
+			define('WP_AJAX_URL', admin_url('admin-ajax.php'));
+		}
+	}
+
+
+	/**
+	 * filter_plugin_actions - adds links to the Plugins page listing
+	 *
+	 * @param    array  $links
+	 * @param    string $plugin
+	 * @return    array
+	 */
+	public function filter_plugin_actions($links, $plugin)
+	{
+		// set $main_file in stone
+		static $main_file;
+		// if $main_file is not set yet
+		if (! $main_file) {
+			$main_file = plugin_basename(EVENT_ESPRESSO_MAIN_FILE);
+		}
+		if ($plugin === $main_file) {
+			// compare current plugin to this one
+			if (EE_Maintenance_Mode::instance()->level() === EE_Maintenance_Mode::level_2_complete_maintenance) {
+				$maintenance_link = '<a href="admin.php?page=espresso_maintenance_settings"'
+									. ' title="Event Espresso is in maintenance mode.  Click this link to learn why.">'
+									. esc_html__('Maintenance Mode Active', 'event_espresso')
+									. '</a>';
+				array_unshift($links, $maintenance_link);
+			} else {
+				$org_settings_link = '<a href="admin.php?page=espresso_general_settings">'
+									 . esc_html__('Settings', 'event_espresso')
+									 . '</a>';
+				$events_link       = '<a href="admin.php?page=espresso_events">'
+									 . esc_html__('Events', 'event_espresso')
+									 . '</a>';
+				// add before other links
+				array_unshift($links, $org_settings_link, $events_link);
+			}
+		}
+		return $links;
+	}
+
+
+	/**
+	 * _get_request
+	 *
+	 * @return void
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 * @throws ReflectionException
+	 */
+	public function get_request()
+	{
+		EE_Registry::instance()->load_core('Request_Handler');
+		EE_Registry::instance()->load_core('CPT_Strategy');
+	}
+
+
+
+	/**
+	 * hide_admin_pages_except_maintenance_mode
+	 *
+	 * @param array $admin_page_folder_names
+	 * @return array
+	 */
+	public function hide_admin_pages_except_maintenance_mode($admin_page_folder_names = array())
+	{
+		return array(
+			'maintenance' => EE_ADMIN_PAGES . 'maintenance' . DS,
+			'about'       => EE_ADMIN_PAGES . 'about' . DS,
+			'support'     => EE_ADMIN_PAGES . 'support' . DS,
+		);
+	}
+
+
+
+	/**
+	 * init- should fire after shortcode, module,  addon, other plugin (default priority), and even
+	 * EE_Front_Controller's init phases have run
+	 *
+	 * @return void
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 * @throws ReflectionException
+	 * @throws ServiceNotFoundException
+	 */
+	public function init()
+	{
+		//only enable most of the EE_Admin IF we're not in full maintenance mode
+		if (EE_Maintenance_Mode::instance()->models_can_query()) {
+			//ok so we want to enable the entire admin
+			$this->persistent_admin_notice_manager = LoaderFactory::getLoader()->getShared(
+				'EventEspresso\core\services\notifications\PersistentAdminNoticeManager'
+			);
+			$this->persistent_admin_notice_manager->setReturnUrl(
+				EE_Admin_Page::add_query_args_and_nonce(
+					array(
+						'page'   => EE_Registry::instance()->REQ->get('page', ''),
+						'action' => EE_Registry::instance()->REQ->get('action', ''),
+					),
+					EE_ADMIN_URL
+				)
+			);
+			$this->maybeSetDatetimeWarningNotice();
+			//at a glance dashboard widget
+			add_filter('dashboard_glance_items', array($this, 'dashboard_glance_items'), 10);
+			//filter for get_edit_post_link used on comments for custom post types
+			add_filter('get_edit_post_link', array($this, 'modify_edit_post_link'), 10, 2);
+		}
+		// run the admin page factory but ONLY if we are doing an ee admin ajax request
+		if (! defined('DOING_AJAX') || EE_ADMIN_AJAX) {
+			try {
+				//this loads the controller for the admin pages which will setup routing etc
+				EE_Registry::instance()->load_core('Admin_Page_Loader');
+			} catch (EE_Error $e) {
+				$e->get_error();
+			}
+		}
+		add_filter('content_save_pre', array($this, 'its_eSpresso'), 10, 1);
+		//make sure our CPTs and custom taxonomy metaboxes get shown for first time users
+		add_action('admin_head', array($this, 'enable_hidden_ee_nav_menu_metaboxes'), 10);
+		add_action('admin_head', array($this, 'register_custom_nav_menu_boxes'), 10);
+		//exclude EE critical pages from all nav menus and wp_list_pages
+		add_filter('nav_menu_meta_box_object', array($this, 'remove_pages_from_nav_menu'), 10);
+	}
+
+
+	/**
+	 *    get_persistent_admin_notices
+	 *
+	 * @access    public
+	 * @return void
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 */
+	public function maybeSetDatetimeWarningNotice()
+	{
+		//add dismissable notice for datetime changes.  Only valid if site does not have a timezone_string set.
+		//@todo This needs to stay in core for a bit to catch anyone upgrading from a version without this to a version
+		//with this.  But after enough time (indeterminate at this point) we can just remove this notice.
+		//this was added with https://events.codebasehq.com/projects/event-espresso/tickets/10626
+		if (apply_filters('FHEE__EE_Admin__maybeSetDatetimeWarningNotice', true)
+			&& ! get_option('timezone_string')
+			&& EEM_Event::instance()->count() > 0
+		) {
+			new PersistentAdminNotice(
+				'datetime_fix_notice',
+				sprintf(
+					esc_html__(
+						'%1$sImportant announcement related to your install of Event Espresso%2$s: There are some changes made to your site that could affect how dates display for your events and other related items with dates and times.  Read more about it %3$shere%4$s. If your dates and times are displaying incorrectly (incorrect offset), you can fix it using the tool on %5$sthis page%4$s.',
+						'event_espresso'
+					),
+					'<strong>',
+					'</strong>',
+					'<a href="https://eventespresso.com/2017/08/important-upcoming-changes-dates-times">',
+					'</a>',
+					'<a href="' . EE_Admin_Page::add_query_args_and_nonce(
+						array(
+							'page' => 'espresso_maintenance_settings',
+							'action' => 'datetime_tools'
+						),
+						admin_url('admin.php')
+					) . '">'
+				),
+				false,
+				'manage_options',
+				'datetime_fix_persistent_notice'
+			);
+		}
+	}
+
+
+
+	/**
+	 * this simply hooks into the nav menu setup of pages metabox and makes sure that we remove EE critical pages from
+	 * the list of options. the wp function "wp_nav_menu_item_post_type_meta_box" found in
+	 * wp-admin/includes/nav-menu.php looks for the "_default_query" property on the post_type object and it uses that
+	 * to override any queries found in the existing query for the given post type.  Note that _default_query is not a
+	 * normal property on the post_type object.  It's found ONLY in this particular context.
+	 *
+	 * @param WP_Post $post_type WP post type object
+	 * @return WP_Post
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 */
+	public function remove_pages_from_nav_menu($post_type)
+	{
+		//if this isn't the "pages" post type let's get out
+		if ($post_type->name !== 'page') {
+			return $post_type;
+		}
+		$critical_pages = EE_Registry::instance()->CFG->core->get_critical_pages_array();
+		$post_type->_default_query = array(
+			'post__not_in' => $critical_pages,
+		);
+		return $post_type;
+	}
+
+
+
+	/**
+	 * WP by default only shows three metaboxes in "nav-menus.php" for first times users.  We want to make sure our
+	 * metaboxes get shown as well
+	 *
+	 * @return void
+	 */
+	public function enable_hidden_ee_nav_menu_metaboxes()
+	{
+		global $wp_meta_boxes, $pagenow;
+		if (! is_array($wp_meta_boxes) || $pagenow !== 'nav-menus.php') {
+			return;
+		}
+		$user = wp_get_current_user();
+		//has this been done yet?
+		if (get_user_option('ee_nav_menu_initialized', $user->ID)) {
+			return;
+		}
+
+		$hidden_meta_boxes  = get_user_option('metaboxhidden_nav-menus', $user->ID);
+		$initial_meta_boxes = apply_filters(
+			'FHEE__EE_Admin__enable_hidden_ee_nav_menu_boxes__initial_meta_boxes',
+			array(
+				'nav-menu-theme-locations',
+				'add-page',
+				'add-custom-links',
+				'add-category',
+				'add-espresso_events',
+				'add-espresso_venues',
+				'add-espresso_event_categories',
+				'add-espresso_venue_categories',
+				'add-post-type-post',
+				'add-post-type-page',
+			)
+		);
+
+		if (is_array($hidden_meta_boxes)) {
+			foreach ($hidden_meta_boxes as $key => $meta_box_id) {
+				if (in_array($meta_box_id, $initial_meta_boxes, true)) {
+					unset($hidden_meta_boxes[$key]);
+				}
+			}
+		}
+		update_user_option($user->ID, 'metaboxhidden_nav-menus', $hidden_meta_boxes, true);
+		update_user_option($user->ID, 'ee_nav_menu_initialized', 1, true);
+	}
+
+
+
+	/**
+	 * This method simply registers custom nav menu boxes for "nav_menus.php route"
+	 * Currently EE is using this to make sure there are menu options for our CPT archive page routes.
+	 *
+	 * @todo   modify this so its more dynamic and automatic for all ee CPTs and setups and can also be hooked into by
+	 *         addons etc.
+	 * @return void
+	 */
+	public function register_custom_nav_menu_boxes()
+	{
+		add_meta_box(
+			'add-extra-nav-menu-pages',
+			esc_html__('Event Espresso Pages', 'event_espresso'),
+			array($this, 'ee_cpt_archive_pages'),
+			'nav-menus',
+			'side',
+			'core'
+		);
+	}
+
+
+
+	/**
+	 * Use this to edit the post link for our cpts so that the edit link points to the correct page.
+	 *
+	 * @since   4.3.0
+	 * @param string $link the original link generated by wp
+	 * @param int    $id   post id
+	 * @return string  the (maybe) modified link
+	 */
+	public function modify_edit_post_link($link, $id)
+	{
+		if (! $post = get_post($id)) {
+			return $link;
+		}
+		if ($post->post_type === 'espresso_attendees') {
+			$query_args = array(
+				'action' => 'edit_attendee',
+				'post'   => $id,
+			);
+			return EEH_URL::add_query_args_and_nonce(
+				$query_args,
+				admin_url('admin.php?page=espresso_registrations')
+			);
+		}
+		return $link;
+	}
+
+
+
+	public function ee_cpt_archive_pages()
+	{
+		global $nav_menu_selected_id;
+		$db_fields   = false;
+		$walker      = new Walker_Nav_Menu_Checklist($db_fields);
+		$current_tab = 'event-archives';
+		$removed_args = array(
+			'action',
+			'customlink-tab',
+			'edit-menu-item',
+			'menu-item',
+			'page-tab',
+			'_wpnonce',
+		);
+		?>
         <div id="posttype-extra-nav-menu-pages" class="posttypediv">
             <ul id="posttype-extra-nav-menu-pages-tabs" class="posttype-tabs add-menu-item-tabs">
                 <li <?php echo('event-archives' === $current_tab ? ' class="tabs"' : ''); ?>>
                     <a class="nav-tab-link" data-type="tabs-panel-posttype-extra-nav-menu-pages-event-archives"
                        href="<?php if ($nav_menu_selected_id) {
-                            echo esc_url(
-                                add_query_arg(
-                                    'extra-nav-menu-pages-tab',
-                                    'event-archives',
-                                    remove_query_arg($removed_args)
-                                )
-                            );
-                       } ?>#tabs-panel-posttype-extra-nav-menu-pages-event-archives">
+							echo esc_url(
+								add_query_arg(
+									'extra-nav-menu-pages-tab',
+									'event-archives',
+									remove_query_arg($removed_args)
+								)
+							);
+					   } ?>#tabs-panel-posttype-extra-nav-menu-pages-event-archives">
                         <?php _e('Event Archive Pages', 'event_espresso'); ?>
                     </a>
                 </li>
             </ul><!-- .posttype-tabs -->
 
             <div id="tabs-panel-posttype-extra-nav-menu-pages-event-archives" class="tabs-panel <?php
-                echo('event-archives' === $current_tab ? 'tabs-panel-active' : 'tabs-panel-inactive');
-                ?>">
+				echo('event-archives' === $current_tab ? 'tabs-panel-active' : 'tabs-panel-inactive');
+				?>">
                     <ul id="extra-nav-menu-pageschecklist-event-archives" class="categorychecklist form-no-clear">
                         <?php
-                        $pages          = $this->_get_extra_nav_menu_pages_items();
-                        $args['walker'] = $walker;
-                        echo walk_nav_menu_tree(
-                            array_map(
-                                array($this, '_setup_extra_nav_menu_pages_items'),
-                                $pages
-                            ),
-                            0,
-                            (object) $args
-                        );
-                        ?>
+						$pages          = $this->_get_extra_nav_menu_pages_items();
+						$args['walker'] = $walker;
+						echo walk_nav_menu_tree(
+							array_map(
+								array($this, '_setup_extra_nav_menu_pages_items'),
+								$pages
+							),
+							0,
+							(object) $args
+						);
+						?>
                     </ul>
                 </div><!-- /.tabs-panel -->
 
                 <p class="button-controls">
                 <span class="list-controls">
                     <a href="<?php
-                    echo esc_url(add_query_arg(
-                        array(
-                            'extra-nav-menu-pages-tab' => 'event-archives',
-                            'selectall'                => 1,
-                        ),
-                        remove_query_arg($removed_args)
-                    ));
-                    ?>#posttype-extra-nav-menu-pages>" class="select-all"><?php _e('Select All'); ?></a>
+					echo esc_url(add_query_arg(
+						array(
+							'extra-nav-menu-pages-tab' => 'event-archives',
+							'selectall'                => 1,
+						),
+						remove_query_arg($removed_args)
+					));
+					?>#posttype-extra-nav-menu-pages>" class="select-all"><?php _e('Select All'); ?></a>
                 </span>
                 <span class="add-to-menu">
                     <input type="submit"<?php wp_nav_menu_disabled_check($nav_menu_selected_id); ?>
@@ -487,486 +487,486 @@ 
 
         </div><!-- /.posttypediv -->
         <?php
-    }
-
-
-    /**
-     * Returns an array of event archive nav items.
-     *
-     * @todo  for now this method is just in place so when it gets abstracted further we can substitute in whatever
-     *        method we use for getting the extra nav menu items
-     * @return array
-     */
-    private function _get_extra_nav_menu_pages_items()
-    {
-        $menuitems[] = array(
-            'title'       => esc_html__('Event List', 'event_espresso'),
-            'url'         => get_post_type_archive_link('espresso_events'),
-            'description' => esc_html__('Archive page for all events.', 'event_espresso'),
-        );
-        return apply_filters('FHEE__EE_Admin__get_extra_nav_menu_pages_items', $menuitems);
-    }
-
-
-    /**
-     * Setup nav menu walker item for usage in the event archive nav menu metabox.  It receives a menu_item array with
-     * the properties and converts it to the menu item object.
-     *
-     * @see wp_setup_nav_menu_item() in wp-includes/nav-menu.php
-     * @param $menu_item_values
-     * @return stdClass
-     */
-    private function _setup_extra_nav_menu_pages_items($menu_item_values)
-    {
-        $menu_item = new stdClass();
-        $keys      = array(
-            'ID'               => 0,
-            'db_id'            => 0,
-            'menu_item_parent' => 0,
-            'object_id'        => -1,
-            'post_parent'      => 0,
-            'type'             => 'custom',
-            'object'           => '',
-            'type_label'       => esc_html__('Extra Nav Menu Item', 'event_espresso'),
-            'title'            => '',
-            'url'              => '',
-            'target'           => '',
-            'attr_title'       => '',
-            'description'      => '',
-            'classes'          => array(),
-            'xfn'              => '',
-        );
-
-        foreach ($keys as $key => $value) {
-            $menu_item->{$key} = isset($menu_item_values[$key]) ? $menu_item_values[$key] : $value;
-        }
-        return $menu_item;
-    }
-
-
-    /**
-     * This is the action hook for the AHEE__EE_Admin_Page__route_admin_request hook that fires off right before an
-     * EE_Admin_Page route is called.
-     *
-     * @return void
-     */
-    public function route_admin_request()
-    {
-    }
-
-
-    /**
-     * wp_loaded should fire on the WordPress wp_loaded hook.  This fires on a VERY late priority.
-     *
-     * @return void
-     */
-    public function wp_loaded()
-    {
-    }
-
-
-    /**
-     * admin_init
-     *
-     * @return void
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     * @throws ReflectionException
-     */
-    public function admin_init()
-    {
-
-        /**
-         * our cpt models must be instantiated on WordPress post processing routes (wp-admin/post.php),
-         * so any hooking into core WP routes is taken care of.  So in this next few lines of code:
-         * - check if doing post processing.
-         * - check if doing post processing of one of EE CPTs
-         * - instantiate the corresponding EE CPT model for the post_type being processed.
-         */
-        if (isset($_POST['action'], $_POST['post_type']) && $_POST['action'] === 'editpost') {
-            EE_Registry::instance()->load_core('Register_CPTs');
-            EE_Register_CPTs::instantiate_cpt_models($_POST['post_type']);
-        }
-
-
-        /**
-         * This code excludes EE critical pages anywhere `wp_dropdown_pages` is used to create a dropdown for selecting
-         * critical pages.  The only place critical pages need included in a generated dropdown is on the "Critical
-         * Pages" tab in the EE General Settings Admin page.
-         * This is for user-proofing.
-         */
-        add_filter('wp_dropdown_pages', array($this, 'modify_dropdown_pages'));
-    }
-
-
-    /**
-     * Callback for wp_dropdown_pages hook to remove ee critical pages from the dropdown selection.
-     *
-     * @param string $output Current output.
-     * @return string
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     */
-    public function modify_dropdown_pages($output)
-    {
-        //get critical pages
-        $critical_pages = EE_Registry::instance()->CFG->core->get_critical_pages_array();
-
-        //split current output by line break for easier parsing.
-        $split_output = explode("\n", $output);
-
-        //loop through to remove any critical pages from the array.
-        foreach ($critical_pages as $page_id) {
-            $needle = 'value="' . $page_id . '"';
-            foreach ($split_output as $key => $haystack) {
-                if (strpos($haystack, $needle) !== false) {
-                    unset($split_output[$key]);
-                }
-            }
-        }
-        //replace output with the new contents
-        return implode("\n", $split_output);
-    }
-
-
-    /**
-     * enqueue all admin scripts that need loaded for admin pages
-     *
-     * @return void
-     */
-    public function enqueue_admin_scripts()
-    {
-        // this javascript is loaded on every admin page to catch any injections ee needs to add to wp run js.
-        // Note: the intention of this script is to only do TARGETED injections.  I.E, only injecting on certain script
-        // calls.
-        wp_enqueue_script(
-            'ee-inject-wp',
-            EE_ADMIN_URL . 'assets/ee-cpt-wp-injects.js',
-            array('jquery'),
-            EVENT_ESPRESSO_VERSION,
-            true
-        );
-        // register cookie script for future dependencies
-        wp_register_script(
-            'jquery-cookie',
-            EE_THIRD_PARTY_URL . 'joyride/jquery.cookie.js',
-            array('jquery'),
-            '2.1',
-            true
-        );
-        //joyride is turned OFF by default, but prior to the admin_enqueue_scripts hook, can be turned back on again
-        // via: add_filter('FHEE_load_joyride', '__return_true' );
-        if (apply_filters('FHEE_load_joyride', false)) {
-            //joyride style
-            wp_register_style('joyride-css', EE_THIRD_PARTY_URL . 'joyride/joyride-2.1.css', array(), '2.1');
-            wp_register_style(
-                'ee-joyride-css',
-                EE_GLOBAL_ASSETS_URL . 'css/ee-joyride-styles.css',
-                array('joyride-css'),
-                EVENT_ESPRESSO_VERSION
-            );
-            wp_register_script(
-                'joyride-modernizr',
-                EE_THIRD_PARTY_URL . 'joyride/modernizr.mq.js',
-                array(),
-                '2.1',
-                true
-            );
-            //joyride JS
-            wp_register_script(
-                'jquery-joyride',
-                EE_THIRD_PARTY_URL . 'joyride/jquery.joyride-2.1.js',
-                array('jquery-cookie', 'joyride-modernizr'),
-                '2.1',
-                true
-            );
-            // wanna go for a joyride?
-            wp_enqueue_style('ee-joyride-css');
-            wp_enqueue_script('jquery-joyride');
-        }
-    }
-
-
-    /**
-     * display_admin_notices
-     *
-     * @return void
-     */
-    public function display_admin_notices()
-    {
-        echo EE_Error::get_notices();
-    }
-
-
-
-    /**
-     * @param array $elements
-     * @return array
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     */
-    public function dashboard_glance_items($elements)
-    {
-        $elements                        = is_array($elements) ? $elements : array($elements);
-        $events                          = EEM_Event::instance()->count();
-        $items['events']['url']          = EE_Admin_Page::add_query_args_and_nonce(
-            array('page' => 'espresso_events'),
-            admin_url('admin.php')
-        );
-        $items['events']['text']         = sprintf(_n('%s Event', '%s Events', $events), number_format_i18n($events));
-        $items['events']['title']        = esc_html__('Click to view all Events', 'event_espresso');
-        $registrations                   = EEM_Registration::instance()->count(
-            array(
-                array(
-                    'STS_ID' => array('!=', EEM_Registration::status_id_incomplete),
-                ),
-            )
-        );
-        $items['registrations']['url']   = EE_Admin_Page::add_query_args_and_nonce(
-            array('page' => 'espresso_registrations'),
-            admin_url('admin.php')
-        );
-        $items['registrations']['text']  = sprintf(
-            _n('%s Registration', '%s Registrations', $registrations),
-            number_format_i18n($registrations)
-        );
-        $items['registrations']['title'] = esc_html__('Click to view all registrations', 'event_espresso');
-
-        $items = (array)apply_filters('FHEE__EE_Admin__dashboard_glance_items__items', $items);
-
-        foreach ($items as $type => $item_properties) {
-            $elements[] = sprintf(
-                '<a class="ee-dashboard-link-' . $type . '" href="%s" title="%s">%s</a>',
-                $item_properties['url'],
-                $item_properties['title'],
-                $item_properties['text']
-            );
-        }
-        return $elements;
-    }
-
-
-    /**
-     * check_for_invalid_datetime_formats
-     * if an admin changes their date or time format settings on the WP General Settings admin page, verify that
-     * their selected format can be parsed by PHP
-     *
-     * @param    $value
-     * @param    $option
-     * @throws EE_Error
-     * @return    string
-     */
-    public function check_for_invalid_datetime_formats($value, $option)
-    {
-        // check for date_format or time_format
-        switch ($option) {
-            case 'date_format':
-                $date_time_format = $value . ' ' . get_option('time_format');
-                break;
-            case 'time_format':
-                $date_time_format = get_option('date_format') . ' ' . $value;
-                break;
-            default:
-                $date_time_format = false;
-        }
-        // do we have a date_time format to check ?
-        if ($date_time_format) {
-            $error_msg = EEH_DTT_Helper::validate_format_string($date_time_format);
-
-            if (is_array($error_msg)) {
-                $msg = '<p>'
-                       . sprintf(
-                           esc_html__(
-                               'The following date time "%s" ( %s ) is difficult to be properly parsed by PHP for the following reasons:',
-                               'event_espresso'
-                           ),
-                           date($date_time_format),
-                           $date_time_format
-                       )
-                       . '</p><p><ul>';
-
-
-                foreach ($error_msg as $error) {
-                    $msg .= '<li>' . $error . '</li>';
-                }
-
-                $msg .= '</ul></p><p>'
-                        . sprintf(
-                            esc_html__(
-                                '%sPlease note that your date and time formats have been reset to "F j, Y" and "g:i a" respectively.%s',
-                                'event_espresso'
-                            ),
-                            '<span style="color:#D54E21;">',
-                            '</span>'
-                        )
-                        . '</p>';
-
-                // trigger WP settings error
-                add_settings_error(
-                    'date_format',
-                    'date_format',
-                    $msg
-                );
-
-                // set format to something valid
-                switch ($option) {
-                    case 'date_format':
-                        $value = 'F j, Y';
-                        break;
-                    case 'time_format':
-                        $value = 'g:i a';
-                        break;
-                }
-            }
-        }
-        return $value;
-    }
-
-
-    /**
-     * its_eSpresso - converts the less commonly used spelling of "Expresso" to "Espresso"
-     *
-     * @param $content
-     * @return    string
-     */
-    public function its_eSpresso($content)
-    {
-        return str_replace('[EXPRESSO_', '[ESPRESSO_', $content);
-    }
-
-
-    /**
-     * espresso_admin_footer
-     *
-     * @return    string
-     */
-    public function espresso_admin_footer()
-    {
-        return \EEH_Template::powered_by_event_espresso('aln-cntr', '', array('utm_content' => 'admin_footer'));
-    }
-
-
-    /**
-     * static method for registering ee admin page.
-     * This method is deprecated in favor of the new location in EE_Register_Admin_Page::register.
-     *
-     * @since      4.3.0
-     * @deprecated 4.3.0    Use EE_Register_Admin_Page::register() instead
-     * @see        EE_Register_Admin_Page::register()
-     * @param       $page_basename
-     * @param       $page_path
-     * @param array $config
-     * @return void
-     * @throws EE_Error
-     */
-    public static function register_ee_admin_page($page_basename, $page_path, $config = array())
-    {
-        EE_Error::doing_it_wrong(
-            __METHOD__,
-            sprintf(
-                esc_html__(
-                    'Usage is deprecated.  Use EE_Register_Admin_Page::register() for registering the %s admin page.',
-                    'event_espresso'
-                ),
-                $page_basename
-            ),
-            '4.3'
-        );
-        if (class_exists('EE_Register_Admin_Page')) {
-            $config['page_path'] = $page_path;
-        }
-        EE_Register_Admin_Page::register($page_basename, $config);
-    }
-
-
-    /**
-     * @deprecated 4.8.41
-     * @param  int      $post_ID
-     * @param  \WP_Post $post
-     * @return void
-     */
-    public static function parse_post_content_on_save($post_ID, $post)
-    {
-        EE_Error::doing_it_wrong(
-            __METHOD__,
-            esc_html__('Usage is deprecated', 'event_espresso'),
-            '4.8.41'
-        );
-    }
-
-
-    /**
-     * @deprecated 4.8.41
-     * @param  $option
-     * @param  $old_value
-     * @param  $value
-     * @return void
-     */
-    public function reset_page_for_posts_on_change($option, $old_value, $value)
-    {
-        EE_Error::doing_it_wrong(
-            __METHOD__,
-            esc_html__('Usage is deprecated', 'event_espresso'),
-            '4.8.41'
-        );
-    }
-
-
-
-    /**
-     * @deprecated 4.9.27
-     * @return void
-     */
-    public function get_persistent_admin_notices()
-    {
-        EE_Error::doing_it_wrong(
-            __METHOD__,
-            sprintf(
-                __('Usage is deprecated. Use "%1$s" instead.', 'event_espresso'),
-                '\EventEspresso\core\services\notifications\PersistentAdminNoticeManager'
-            ),
-            '4.9.27'
-        );
-    }
-
-
-
-    /**
-     * @deprecated 4.9.27
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws DomainException
-     */
-    public function dismiss_ee_nag_notice_callback()
-    {
-        EE_Error::doing_it_wrong(
-            __METHOD__,
-            sprintf(
-                __('Usage is deprecated. Use "%1$s" instead.', 'event_espresso'),
-                '\EventEspresso\core\services\notifications\PersistentAdminNoticeManager'
-            ),
-            '4.9.27'
-        );
-        $this->persistent_admin_notice_manager->dismissNotice();
-    }
-
-
-    /**
-     * Callback on load-plugins.php hook for setting up anything hooking into the wp plugins page.
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     */
-    public function hookIntoWpPluginsPage()
-    {
-        LoaderFactory::getLoader()->getShared('EventEspresso\core\domain\services\admin\ExitModal');
-        LoaderFactory::getLoader()
-                     ->getShared('EventEspresso\core\domain\services\admin\PluginUpsells')
-                     ->decafUpsells();
-    }
+	}
+
+
+	/**
+	 * Returns an array of event archive nav items.
+	 *
+	 * @todo  for now this method is just in place so when it gets abstracted further we can substitute in whatever
+	 *        method we use for getting the extra nav menu items
+	 * @return array
+	 */
+	private function _get_extra_nav_menu_pages_items()
+	{
+		$menuitems[] = array(
+			'title'       => esc_html__('Event List', 'event_espresso'),
+			'url'         => get_post_type_archive_link('espresso_events'),
+			'description' => esc_html__('Archive page for all events.', 'event_espresso'),
+		);
+		return apply_filters('FHEE__EE_Admin__get_extra_nav_menu_pages_items', $menuitems);
+	}
+
+
+	/**
+	 * Setup nav menu walker item for usage in the event archive nav menu metabox.  It receives a menu_item array with
+	 * the properties and converts it to the menu item object.
+	 *
+	 * @see wp_setup_nav_menu_item() in wp-includes/nav-menu.php
+	 * @param $menu_item_values
+	 * @return stdClass
+	 */
+	private function _setup_extra_nav_menu_pages_items($menu_item_values)
+	{
+		$menu_item = new stdClass();
+		$keys      = array(
+			'ID'               => 0,
+			'db_id'            => 0,
+			'menu_item_parent' => 0,
+			'object_id'        => -1,
+			'post_parent'      => 0,
+			'type'             => 'custom',
+			'object'           => '',
+			'type_label'       => esc_html__('Extra Nav Menu Item', 'event_espresso'),
+			'title'            => '',
+			'url'              => '',
+			'target'           => '',
+			'attr_title'       => '',
+			'description'      => '',
+			'classes'          => array(),
+			'xfn'              => '',
+		);
+
+		foreach ($keys as $key => $value) {
+			$menu_item->{$key} = isset($menu_item_values[$key]) ? $menu_item_values[$key] : $value;
+		}
+		return $menu_item;
+	}
+
+
+	/**
+	 * This is the action hook for the AHEE__EE_Admin_Page__route_admin_request hook that fires off right before an
+	 * EE_Admin_Page route is called.
+	 *
+	 * @return void
+	 */
+	public function route_admin_request()
+	{
+	}
+
+
+	/**
+	 * wp_loaded should fire on the WordPress wp_loaded hook.  This fires on a VERY late priority.
+	 *
+	 * @return void
+	 */
+	public function wp_loaded()
+	{
+	}
+
+
+	/**
+	 * admin_init
+	 *
+	 * @return void
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 * @throws ReflectionException
+	 */
+	public function admin_init()
+	{
+
+		/**
+		 * our cpt models must be instantiated on WordPress post processing routes (wp-admin/post.php),
+		 * so any hooking into core WP routes is taken care of.  So in this next few lines of code:
+		 * - check if doing post processing.
+		 * - check if doing post processing of one of EE CPTs
+		 * - instantiate the corresponding EE CPT model for the post_type being processed.
+		 */
+		if (isset($_POST['action'], $_POST['post_type']) && $_POST['action'] === 'editpost') {
+			EE_Registry::instance()->load_core('Register_CPTs');
+			EE_Register_CPTs::instantiate_cpt_models($_POST['post_type']);
+		}
+
+
+		/**
+		 * This code excludes EE critical pages anywhere `wp_dropdown_pages` is used to create a dropdown for selecting
+		 * critical pages.  The only place critical pages need included in a generated dropdown is on the "Critical
+		 * Pages" tab in the EE General Settings Admin page.
+		 * This is for user-proofing.
+		 */
+		add_filter('wp_dropdown_pages', array($this, 'modify_dropdown_pages'));
+	}
+
+
+	/**
+	 * Callback for wp_dropdown_pages hook to remove ee critical pages from the dropdown selection.
+	 *
+	 * @param string $output Current output.
+	 * @return string
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 */
+	public function modify_dropdown_pages($output)
+	{
+		//get critical pages
+		$critical_pages = EE_Registry::instance()->CFG->core->get_critical_pages_array();
+
+		//split current output by line break for easier parsing.
+		$split_output = explode("\n", $output);
+
+		//loop through to remove any critical pages from the array.
+		foreach ($critical_pages as $page_id) {
+			$needle = 'value="' . $page_id . '"';
+			foreach ($split_output as $key => $haystack) {
+				if (strpos($haystack, $needle) !== false) {
+					unset($split_output[$key]);
+				}
+			}
+		}
+		//replace output with the new contents
+		return implode("\n", $split_output);
+	}
+
+
+	/**
+	 * enqueue all admin scripts that need loaded for admin pages
+	 *
+	 * @return void
+	 */
+	public function enqueue_admin_scripts()
+	{
+		// this javascript is loaded on every admin page to catch any injections ee needs to add to wp run js.
+		// Note: the intention of this script is to only do TARGETED injections.  I.E, only injecting on certain script
+		// calls.
+		wp_enqueue_script(
+			'ee-inject-wp',
+			EE_ADMIN_URL . 'assets/ee-cpt-wp-injects.js',
+			array('jquery'),
+			EVENT_ESPRESSO_VERSION,
+			true
+		);
+		// register cookie script for future dependencies
+		wp_register_script(
+			'jquery-cookie',
+			EE_THIRD_PARTY_URL . 'joyride/jquery.cookie.js',
+			array('jquery'),
+			'2.1',
+			true
+		);
+		//joyride is turned OFF by default, but prior to the admin_enqueue_scripts hook, can be turned back on again
+		// via: add_filter('FHEE_load_joyride', '__return_true' );
+		if (apply_filters('FHEE_load_joyride', false)) {
+			//joyride style
+			wp_register_style('joyride-css', EE_THIRD_PARTY_URL . 'joyride/joyride-2.1.css', array(), '2.1');
+			wp_register_style(
+				'ee-joyride-css',
+				EE_GLOBAL_ASSETS_URL . 'css/ee-joyride-styles.css',
+				array('joyride-css'),
+				EVENT_ESPRESSO_VERSION
+			);
+			wp_register_script(
+				'joyride-modernizr',
+				EE_THIRD_PARTY_URL . 'joyride/modernizr.mq.js',
+				array(),
+				'2.1',
+				true
+			);
+			//joyride JS
+			wp_register_script(
+				'jquery-joyride',
+				EE_THIRD_PARTY_URL . 'joyride/jquery.joyride-2.1.js',
+				array('jquery-cookie', 'joyride-modernizr'),
+				'2.1',
+				true
+			);
+			// wanna go for a joyride?
+			wp_enqueue_style('ee-joyride-css');
+			wp_enqueue_script('jquery-joyride');
+		}
+	}
+
+
+	/**
+	 * display_admin_notices
+	 *
+	 * @return void
+	 */
+	public function display_admin_notices()
+	{
+		echo EE_Error::get_notices();
+	}
+
+
+
+	/**
+	 * @param array $elements
+	 * @return array
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 */
+	public function dashboard_glance_items($elements)
+	{
+		$elements                        = is_array($elements) ? $elements : array($elements);
+		$events                          = EEM_Event::instance()->count();
+		$items['events']['url']          = EE_Admin_Page::add_query_args_and_nonce(
+			array('page' => 'espresso_events'),
+			admin_url('admin.php')
+		);
+		$items['events']['text']         = sprintf(_n('%s Event', '%s Events', $events), number_format_i18n($events));
+		$items['events']['title']        = esc_html__('Click to view all Events', 'event_espresso');
+		$registrations                   = EEM_Registration::instance()->count(
+			array(
+				array(
+					'STS_ID' => array('!=', EEM_Registration::status_id_incomplete),
+				),
+			)
+		);
+		$items['registrations']['url']   = EE_Admin_Page::add_query_args_and_nonce(
+			array('page' => 'espresso_registrations'),
+			admin_url('admin.php')
+		);
+		$items['registrations']['text']  = sprintf(
+			_n('%s Registration', '%s Registrations', $registrations),
+			number_format_i18n($registrations)
+		);
+		$items['registrations']['title'] = esc_html__('Click to view all registrations', 'event_espresso');
+
+		$items = (array)apply_filters('FHEE__EE_Admin__dashboard_glance_items__items', $items);
+
+		foreach ($items as $type => $item_properties) {
+			$elements[] = sprintf(
+				'<a class="ee-dashboard-link-' . $type . '" href="%s" title="%s">%s</a>',
+				$item_properties['url'],
+				$item_properties['title'],
+				$item_properties['text']
+			);
+		}
+		return $elements;
+	}
+
+
+	/**
+	 * check_for_invalid_datetime_formats
+	 * if an admin changes their date or time format settings on the WP General Settings admin page, verify that
+	 * their selected format can be parsed by PHP
+	 *
+	 * @param    $value
+	 * @param    $option
+	 * @throws EE_Error
+	 * @return    string
+	 */
+	public function check_for_invalid_datetime_formats($value, $option)
+	{
+		// check for date_format or time_format
+		switch ($option) {
+			case 'date_format':
+				$date_time_format = $value . ' ' . get_option('time_format');
+				break;
+			case 'time_format':
+				$date_time_format = get_option('date_format') . ' ' . $value;
+				break;
+			default:
+				$date_time_format = false;
+		}
+		// do we have a date_time format to check ?
+		if ($date_time_format) {
+			$error_msg = EEH_DTT_Helper::validate_format_string($date_time_format);
+
+			if (is_array($error_msg)) {
+				$msg = '<p>'
+					   . sprintf(
+						   esc_html__(
+							   'The following date time "%s" ( %s ) is difficult to be properly parsed by PHP for the following reasons:',
+							   'event_espresso'
+						   ),
+						   date($date_time_format),
+						   $date_time_format
+					   )
+					   . '</p><p><ul>';
+
+
+				foreach ($error_msg as $error) {
+					$msg .= '<li>' . $error . '</li>';
+				}
+
+				$msg .= '</ul></p><p>'
+						. sprintf(
+							esc_html__(
+								'%sPlease note that your date and time formats have been reset to "F j, Y" and "g:i a" respectively.%s',
+								'event_espresso'
+							),
+							'<span style="color:#D54E21;">',
+							'</span>'
+						)
+						. '</p>';
+
+				// trigger WP settings error
+				add_settings_error(
+					'date_format',
+					'date_format',
+					$msg
+				);
+
+				// set format to something valid
+				switch ($option) {
+					case 'date_format':
+						$value = 'F j, Y';
+						break;
+					case 'time_format':
+						$value = 'g:i a';
+						break;
+				}
+			}
+		}
+		return $value;
+	}
+
+
+	/**
+	 * its_eSpresso - converts the less commonly used spelling of "Expresso" to "Espresso"
+	 *
+	 * @param $content
+	 * @return    string
+	 */
+	public function its_eSpresso($content)
+	{
+		return str_replace('[EXPRESSO_', '[ESPRESSO_', $content);
+	}
+
+
+	/**
+	 * espresso_admin_footer
+	 *
+	 * @return    string
+	 */
+	public function espresso_admin_footer()
+	{
+		return \EEH_Template::powered_by_event_espresso('aln-cntr', '', array('utm_content' => 'admin_footer'));
+	}
+
+
+	/**
+	 * static method for registering ee admin page.
+	 * This method is deprecated in favor of the new location in EE_Register_Admin_Page::register.
+	 *
+	 * @since      4.3.0
+	 * @deprecated 4.3.0    Use EE_Register_Admin_Page::register() instead
+	 * @see        EE_Register_Admin_Page::register()
+	 * @param       $page_basename
+	 * @param       $page_path
+	 * @param array $config
+	 * @return void
+	 * @throws EE_Error
+	 */
+	public static function register_ee_admin_page($page_basename, $page_path, $config = array())
+	{
+		EE_Error::doing_it_wrong(
+			__METHOD__,
+			sprintf(
+				esc_html__(
+					'Usage is deprecated.  Use EE_Register_Admin_Page::register() for registering the %s admin page.',
+					'event_espresso'
+				),
+				$page_basename
+			),
+			'4.3'
+		);
+		if (class_exists('EE_Register_Admin_Page')) {
+			$config['page_path'] = $page_path;
+		}
+		EE_Register_Admin_Page::register($page_basename, $config);
+	}
+
+
+	/**
+	 * @deprecated 4.8.41
+	 * @param  int      $post_ID
+	 * @param  \WP_Post $post
+	 * @return void
+	 */
+	public static function parse_post_content_on_save($post_ID, $post)
+	{
+		EE_Error::doing_it_wrong(
+			__METHOD__,
+			esc_html__('Usage is deprecated', 'event_espresso'),
+			'4.8.41'
+		);
+	}
+
+
+	/**
+	 * @deprecated 4.8.41
+	 * @param  $option
+	 * @param  $old_value
+	 * @param  $value
+	 * @return void
+	 */
+	public function reset_page_for_posts_on_change($option, $old_value, $value)
+	{
+		EE_Error::doing_it_wrong(
+			__METHOD__,
+			esc_html__('Usage is deprecated', 'event_espresso'),
+			'4.8.41'
+		);
+	}
+
+
+
+	/**
+	 * @deprecated 4.9.27
+	 * @return void
+	 */
+	public function get_persistent_admin_notices()
+	{
+		EE_Error::doing_it_wrong(
+			__METHOD__,
+			sprintf(
+				__('Usage is deprecated. Use "%1$s" instead.', 'event_espresso'),
+				'\EventEspresso\core\services\notifications\PersistentAdminNoticeManager'
+			),
+			'4.9.27'
+		);
+	}
+
+
+
+	/**
+	 * @deprecated 4.9.27
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws DomainException
+	 */
+	public function dismiss_ee_nag_notice_callback()
+	{
+		EE_Error::doing_it_wrong(
+			__METHOD__,
+			sprintf(
+				__('Usage is deprecated. Use "%1$s" instead.', 'event_espresso'),
+				'\EventEspresso\core\services\notifications\PersistentAdminNoticeManager'
+			),
+			'4.9.27'
+		);
+		$this->persistent_admin_notice_manager->dismissNotice();
+	}
+
+
+	/**
+	 * Callback on load-plugins.php hook for setting up anything hooking into the wp plugins page.
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 */
+	public function hookIntoWpPluginsPage()
+	{
+		LoaderFactory::getLoader()->getShared('EventEspresso\core\domain\services\admin\ExitModal');
+		LoaderFactory::getLoader()
+					 ->getShared('EventEspresso\core\domain\services\admin\PluginUpsells')
+					 ->decafUpsells();
+	}
 }

admin_pages/transactions/templates/txn_admin_details_header.template.php

Spacing +5 added lines, -5 removed lines

@@ -1,17 +1,17 @@
 
-		<h3 class="txn-navigation-strip"><?php echo $previous_transaction . '&nbsp;'; echo __( 'Transaction # ', 'event_espresso' ) . $txn_nmbr['value']; echo '&nbsp;' . $next_transaction; ?></h3>
-		<h2 id="txn-date-h2" class="txn-date-h2"><?php echo $txn_datetime['value'];?></h2>
+		<h3 class="txn-navigation-strip"><?php echo $previous_transaction.'&nbsp;'; echo __('Transaction # ', 'event_espresso').$txn_nmbr['value']; echo '&nbsp;'.$next_transaction; ?></h3>
+		<h2 id="txn-date-h2" class="txn-date-h2"><?php echo $txn_datetime['value']; ?></h2>
 		<h2 id="txn-status-h2" class="txn-status-h2">
-			<?php echo __( 'Transaction Status: ', 'event_espresso' );?><span id="txn-status" class="<?php echo $txn_status['class'];?>"><?php echo $txn_status['value'];?></span>
+			<?php echo __('Transaction Status: ', 'event_espresso'); ?><span id="txn-status" class="<?php echo $txn_status['class']; ?>"><?php echo $txn_status['value']; ?></span>
 		</h2>
 
 	<?php $attributes = $amount_due ? 'class="txn-amount-due-h2"' : 'class="txn-amount-due-h2 hidden"'; ?>
 		<h2 id="txn-amount-due-h2" <?php echo $attributes; ?>>
-			<?php echo __( 'Total Amount Due: ', 'event_espresso' );?><span id="txn-admin-total-amount-due" class="<?php echo $amount_due_class;?>"><?php echo $amount_due;?></span>
+			<?php echo __('Total Amount Due: ', 'event_espresso'); ?><span id="txn-admin-total-amount-due" class="<?php echo $amount_due_class; ?>"><?php echo $amount_due; ?></span>
 		</h2>
 
 		<h3 id="txn-selected-method-of-payment-h3" class="txn-selected-method-of-payment-h3">
-			<?php echo __( 'Last Method of Payment: ', 'event_espresso' );?><?php echo $method_of_payment_name;?>
+			<?php echo __('Last Method of Payment: ', 'event_espresso'); ?><?php echo $method_of_payment_name; ?>
 		</h3>
 
 

core/services/Benchmark.php

Indentation +304 added lines, -304 removed lines

@@ -20,310 +20,310 @@
 class Benchmark
 {
 
-    /**
-     * array containing the start time for the timers
-     */
-    private static $start_times;
-
-    /**
-     * array containing all the timer'd times, which can be outputted via show_times()
-     */
-    private static $times = array();
-
-    /**
-     * @var array
-     */
-    protected static $memory_usage = array();
-
-
-
-    /**
-     * whether to benchmark code or not
-     */
-    public static function doNotRun()
-    {
-        return ! WP_DEBUG || (defined('DOING_AJAX') && DOING_AJAX);
-    }
-
-
-
-    /**
-     * resetTimes
-     */
-    public static function resetTimes()
-    {
-        Benchmark::$times = array();
-    }
-
-
-
-    /**
-     * Add Benchmark::startTimer() before a block of code you want to measure the performance of
-     *
-     * @param null $timer_name
-     */
-    public static function startTimer($timer_name = null)
-    {
-        if (Benchmark::doNotRun()) {
-            return;
-        }
-        $timer_name = $timer_name !== '' ? $timer_name : get_called_class();
-        Benchmark::$start_times[$timer_name] = microtime(true);
-    }
-
-
-
-    /**
-     * Add Benchmark::stopTimer() after a block of code you want to measure the performance of
-     *
-     * @param string $timer_name
-     */
-    public static function stopTimer($timer_name = '')
-    {
-        if (Benchmark::doNotRun()) {
-            return;
-        }
-        $timer_name = $timer_name !== '' ? $timer_name : get_called_class();
-        if (isset(Benchmark::$start_times[$timer_name])) {
-            $start_time = Benchmark::$start_times[$timer_name];
-            unset(Benchmark::$start_times[$timer_name]);
-        } else {
-            $start_time = array_pop(Benchmark::$start_times);
-        }
-        Benchmark::$times[$timer_name] = number_format(microtime(true) - $start_time, 8);
-    }
-
-
-
-    /**
-     * Measure the memory usage by PHP so far.
-     *
-     * @param string  $label      The label to show for this time eg "Start of calling Some_Class::some_function"
-     * @param boolean $output_now whether to echo now, or wait until EEH_Debug_Tools::show_times() is called
-     * @param bool    $formatted
-     * @return void
-     */
-    public static function measureMemory($label = 'memory usage', $output_now = false, $formatted = true)
-    {
-        if (Benchmark::doNotRun()) {
-            return;
-        }
-        $memory_used = Benchmark::convert(memory_get_usage(true));
-        Benchmark::$memory_usage[$label] = $memory_used;
-        if ($output_now) {
-            echo $formatted
-                ? "<br>{$label} : {$memory_used}"
-                : "\n {$label} : {$memory_used}";
-        }
-    }
-
-
-
-    /**
-     * will display the benchmarking results at shutdown
-     *
-     * @param bool $formatted
-     * @return void
-     */
-    public static function displayResultsAtShutdown($formatted = true)
-    {
-        add_action(
-            'shutdown',
-            function () use ($formatted) {
-                Benchmark::displayResults(true, $formatted);
-            }
-        );
-    }
-
-
-
-    /**
-     * will display the benchmarking results at shutdown
-     *
-     * @param string $filepath
-     * @param bool   $formatted
-     * @param bool   $append
-     * @return void
-     */
-    public static function writeResultsAtShutdown($filepath = '', $formatted = true, $append = true)
-    {
-        add_action(
-            'shutdown',
-            function () use ($filepath, $formatted, $append) {
-                Benchmark::writeResultsToFile($filepath, $formatted, $append);
-            }
-        );
-    }
-
-
-
-    /**
-     * @param bool $formatted
-     * @return string
-     */
-    private static function generateResults($formatted = true)
-    {
-        if (Benchmark::doNotRun()) {
-            return '';
-        }
-        $output = '';
-        if (! empty(Benchmark::$times)) {
-            $total = 0;
-            $output .= $formatted
-                ? '<span style="color:#999999; font-size:.8em;">( time in milliseconds )</span><br />'
-                : '';
-            foreach (Benchmark::$times as $timer_name => $total_time) {
-                $output .= Benchmark::formatTime($timer_name, $total_time, $formatted);
-                $output .= $formatted ? '<br />'  : "\n";
-                $total += $total_time;
-            }
-            if($formatted) {
-                $output .= '<br />';
-                $output .= '<h4>TOTAL TIME</h4>';
-                $output .= Benchmark::formatTime('', $total, $formatted);
-                $output .= '<span style="color:#999999; font-size:.8em;"> milliseconds</span><br />';
-                $output .= '<br />';
-                $output .= '<h5>Performance scale (from best to worse)</h5>';
-                $output .= '<span style="color:mediumpurple">Like wow! How about a Scooby snack?</span><br />';
-                $output .= '<span style="color:deepskyblue">Like...no way man!</span><br />';
-                $output .= '<span style="color:limegreen">Like...groovy!</span><br />';
-                $output .= '<span style="color:gold">Ruh Oh</span><br />';
-                $output .= '<span style="color:darkorange">Zoinks!</span><br />';
-                $output .= '<span style="color:red">Like...HEEELLLP</span><br />';
-            }
-        }
-        if (! empty(Benchmark::$memory_usage)) {
-            $output .= $formatted
-                ? '<h5>Memory</h5>'
-                : "\nMemory";
-            foreach (Benchmark::$memory_usage as $label => $memory_usage) {
-                $output .= $formatted
-                    ? '<br />'
-                    : "\n";
-                $output .= "{$memory_usage} : {$label}";
-            }
-        }
-        if (empty($output)) {
-            return '';
-        }
-        $output = $formatted
-            ? '<div style="border:1px solid #dddddd; background-color:#ffffff;'
-              . (is_admin()
-                ? ' margin:2em 2em 2em 180px;'
-                : ' margin:2em;')
-              . ' padding:2em;">'
-              . '<h4>BENCHMARKING</h4>'
-              . $output
-              . '</div>'
-            : $output;
-        return $output;
-    }
-
-
-
-    /**
-     * @param bool $echo
-     * @param bool $formatted
-     * @return string
-     */
-    public static function displayResults($echo = true, $formatted = true)
-    {
-        $results = Benchmark::generateResults($formatted);
-        if ($echo) {
-            echo $results;
-            $results = '';
-        }
-        return $results;
-    }
-
-
-    /**
-     * @param string $filepath
-     * @param bool   $formatted
-     * @param bool   $append
-     * @throws EE_Error
-     */
-    public static function writeResultsToFile($filepath = '', $formatted = true, $append = true)
-    {
-        $filepath = ! empty($filepath) && is_readable(dirname($filepath))
-            ? $filepath
-            : '';
-        if( empty($filepath)) {
-            $filepath = EVENT_ESPRESSO_UPLOAD_DIR . 'logs/benchmarking-' . date('Y-m-d') . '.html';
-        }
-        EEH_File::ensure_file_exists_and_is_writable($filepath);
-        file_put_contents(
-            $filepath,
-            "\n" . date('Y-m-d H:i:s') . Benchmark::generateResults($formatted),
-            $append ? FILE_APPEND | LOCK_EX : LOCK_EX
-        );
-    }
-
-
-
-    /**
-     * Converts a measure of memory bytes into the most logical units (eg kb, mb, etc)
-     *
-     * @param int $size
-     * @return string
-     */
-    public static function convert($size)
-    {
-        $unit = array('b', 'kb', 'mb', 'gb', 'tb', 'pb');
-        return round(
-            $size / pow(1024, $i = floor(log($size, 1024))),
-            2
-        ) . ' ' . $unit[absint($i)];
-    }
-
-
-
-    /**
-     * @param string $timer_name
-     * @param float  $total_time
-     * @param bool   $formatted
-     * @return string
-     */
-    public static function formatTime($timer_name, $total_time, $formatted = true)
-    {
-        $total_time *= 1000;
-        switch ($total_time) {
-            case $total_time > 12500 :
-                $color = 'red';
-                $bold = 'bold';
-                break;
-            case $total_time > 2500 :
-                $color = 'darkorange';
-                $bold = 'bold';
-                break;
-            case $total_time > 500 :
-                $color = 'gold';
-                $bold = 'bold';
-                break;
-            case $total_time > 100 :
-                $color = 'limegreen';
-                $bold = 'normal';
-                break;
-            case $total_time > 20 :
-                $color = 'deepskyblue';
-                $bold = 'normal';
-                break;
-            default :
-                $color = 'mediumpurple';
-                $bold = 'normal';
-                break;
-        }
-        return $formatted
-            ? '<span style="min-width: 10px; margin:0 1em; color:'
-               . $color
-               . '; font-weight:'
-               . $bold
-               . '; font-size:1.2em;">'
-               . str_pad(number_format($total_time, 3), 9, '0', STR_PAD_LEFT)
-               . '</span> '
-               . $timer_name
-            :  str_pad(number_format($total_time, 3), 9, '0', STR_PAD_LEFT);
-    }
+	/**
+	 * array containing the start time for the timers
+	 */
+	private static $start_times;
+
+	/**
+	 * array containing all the timer'd times, which can be outputted via show_times()
+	 */
+	private static $times = array();
+
+	/**
+	 * @var array
+	 */
+	protected static $memory_usage = array();
+
+
+
+	/**
+	 * whether to benchmark code or not
+	 */
+	public static function doNotRun()
+	{
+		return ! WP_DEBUG || (defined('DOING_AJAX') && DOING_AJAX);
+	}
+
+
+
+	/**
+	 * resetTimes
+	 */
+	public static function resetTimes()
+	{
+		Benchmark::$times = array();
+	}
+
+
+
+	/**
+	 * Add Benchmark::startTimer() before a block of code you want to measure the performance of
+	 *
+	 * @param null $timer_name
+	 */
+	public static function startTimer($timer_name = null)
+	{
+		if (Benchmark::doNotRun()) {
+			return;
+		}
+		$timer_name = $timer_name !== '' ? $timer_name : get_called_class();
+		Benchmark::$start_times[$timer_name] = microtime(true);
+	}
+
+
+
+	/**
+	 * Add Benchmark::stopTimer() after a block of code you want to measure the performance of
+	 *
+	 * @param string $timer_name
+	 */
+	public static function stopTimer($timer_name = '')
+	{
+		if (Benchmark::doNotRun()) {
+			return;
+		}
+		$timer_name = $timer_name !== '' ? $timer_name : get_called_class();
+		if (isset(Benchmark::$start_times[$timer_name])) {
+			$start_time = Benchmark::$start_times[$timer_name];
+			unset(Benchmark::$start_times[$timer_name]);
+		} else {
+			$start_time = array_pop(Benchmark::$start_times);
+		}
+		Benchmark::$times[$timer_name] = number_format(microtime(true) - $start_time, 8);
+	}
+
+
+
+	/**
+	 * Measure the memory usage by PHP so far.
+	 *
+	 * @param string  $label      The label to show for this time eg "Start of calling Some_Class::some_function"
+	 * @param boolean $output_now whether to echo now, or wait until EEH_Debug_Tools::show_times() is called
+	 * @param bool    $formatted
+	 * @return void
+	 */
+	public static function measureMemory($label = 'memory usage', $output_now = false, $formatted = true)
+	{
+		if (Benchmark::doNotRun()) {
+			return;
+		}
+		$memory_used = Benchmark::convert(memory_get_usage(true));
+		Benchmark::$memory_usage[$label] = $memory_used;
+		if ($output_now) {
+			echo $formatted
+				? "<br>{$label} : {$memory_used}"
+				: "\n {$label} : {$memory_used}";
+		}
+	}
+
+
+
+	/**
+	 * will display the benchmarking results at shutdown
+	 *
+	 * @param bool $formatted
+	 * @return void
+	 */
+	public static function displayResultsAtShutdown($formatted = true)
+	{
+		add_action(
+			'shutdown',
+			function () use ($formatted) {
+				Benchmark::displayResults(true, $formatted);
+			}
+		);
+	}
+
+
+
+	/**
+	 * will display the benchmarking results at shutdown
+	 *
+	 * @param string $filepath
+	 * @param bool   $formatted
+	 * @param bool   $append
+	 * @return void
+	 */
+	public static function writeResultsAtShutdown($filepath = '', $formatted = true, $append = true)
+	{
+		add_action(
+			'shutdown',
+			function () use ($filepath, $formatted, $append) {
+				Benchmark::writeResultsToFile($filepath, $formatted, $append);
+			}
+		);
+	}
+
+
+
+	/**
+	 * @param bool $formatted
+	 * @return string
+	 */
+	private static function generateResults($formatted = true)
+	{
+		if (Benchmark::doNotRun()) {
+			return '';
+		}
+		$output = '';
+		if (! empty(Benchmark::$times)) {
+			$total = 0;
+			$output .= $formatted
+				? '<span style="color:#999999; font-size:.8em;">( time in milliseconds )</span><br />'
+				: '';
+			foreach (Benchmark::$times as $timer_name => $total_time) {
+				$output .= Benchmark::formatTime($timer_name, $total_time, $formatted);
+				$output .= $formatted ? '<br />'  : "\n";
+				$total += $total_time;
+			}
+			if($formatted) {
+				$output .= '<br />';
+				$output .= '<h4>TOTAL TIME</h4>';
+				$output .= Benchmark::formatTime('', $total, $formatted);
+				$output .= '<span style="color:#999999; font-size:.8em;"> milliseconds</span><br />';
+				$output .= '<br />';
+				$output .= '<h5>Performance scale (from best to worse)</h5>';
+				$output .= '<span style="color:mediumpurple">Like wow! How about a Scooby snack?</span><br />';
+				$output .= '<span style="color:deepskyblue">Like...no way man!</span><br />';
+				$output .= '<span style="color:limegreen">Like...groovy!</span><br />';
+				$output .= '<span style="color:gold">Ruh Oh</span><br />';
+				$output .= '<span style="color:darkorange">Zoinks!</span><br />';
+				$output .= '<span style="color:red">Like...HEEELLLP</span><br />';
+			}
+		}
+		if (! empty(Benchmark::$memory_usage)) {
+			$output .= $formatted
+				? '<h5>Memory</h5>'
+				: "\nMemory";
+			foreach (Benchmark::$memory_usage as $label => $memory_usage) {
+				$output .= $formatted
+					? '<br />'
+					: "\n";
+				$output .= "{$memory_usage} : {$label}";
+			}
+		}
+		if (empty($output)) {
+			return '';
+		}
+		$output = $formatted
+			? '<div style="border:1px solid #dddddd; background-color:#ffffff;'
+			  . (is_admin()
+				? ' margin:2em 2em 2em 180px;'
+				: ' margin:2em;')
+			  . ' padding:2em;">'
+			  . '<h4>BENCHMARKING</h4>'
+			  . $output
+			  . '</div>'
+			: $output;
+		return $output;
+	}
+
+
+
+	/**
+	 * @param bool $echo
+	 * @param bool $formatted
+	 * @return string
+	 */
+	public static function displayResults($echo = true, $formatted = true)
+	{
+		$results = Benchmark::generateResults($formatted);
+		if ($echo) {
+			echo $results;
+			$results = '';
+		}
+		return $results;
+	}
+
+
+	/**
+	 * @param string $filepath
+	 * @param bool   $formatted
+	 * @param bool   $append
+	 * @throws EE_Error
+	 */
+	public static function writeResultsToFile($filepath = '', $formatted = true, $append = true)
+	{
+		$filepath = ! empty($filepath) && is_readable(dirname($filepath))
+			? $filepath
+			: '';
+		if( empty($filepath)) {
+			$filepath = EVENT_ESPRESSO_UPLOAD_DIR . 'logs/benchmarking-' . date('Y-m-d') . '.html';
+		}
+		EEH_File::ensure_file_exists_and_is_writable($filepath);
+		file_put_contents(
+			$filepath,
+			"\n" . date('Y-m-d H:i:s') . Benchmark::generateResults($formatted),
+			$append ? FILE_APPEND | LOCK_EX : LOCK_EX
+		);
+	}
+
+
+
+	/**
+	 * Converts a measure of memory bytes into the most logical units (eg kb, mb, etc)
+	 *
+	 * @param int $size
+	 * @return string
+	 */
+	public static function convert($size)
+	{
+		$unit = array('b', 'kb', 'mb', 'gb', 'tb', 'pb');
+		return round(
+			$size / pow(1024, $i = floor(log($size, 1024))),
+			2
+		) . ' ' . $unit[absint($i)];
+	}
+
+
+
+	/**
+	 * @param string $timer_name
+	 * @param float  $total_time
+	 * @param bool   $formatted
+	 * @return string
+	 */
+	public static function formatTime($timer_name, $total_time, $formatted = true)
+	{
+		$total_time *= 1000;
+		switch ($total_time) {
+			case $total_time > 12500 :
+				$color = 'red';
+				$bold = 'bold';
+				break;
+			case $total_time > 2500 :
+				$color = 'darkorange';
+				$bold = 'bold';
+				break;
+			case $total_time > 500 :
+				$color = 'gold';
+				$bold = 'bold';
+				break;
+			case $total_time > 100 :
+				$color = 'limegreen';
+				$bold = 'normal';
+				break;
+			case $total_time > 20 :
+				$color = 'deepskyblue';
+				$bold = 'normal';
+				break;
+			default :
+				$color = 'mediumpurple';
+				$bold = 'normal';
+				break;
+		}
+		return $formatted
+			? '<span style="min-width: 10px; margin:0 1em; color:'
+			   . $color
+			   . '; font-weight:'
+			   . $bold
+			   . '; font-size:1.2em;">'
+			   . str_pad(number_format($total_time, 3), 9, '0', STR_PAD_LEFT)
+			   . '</span> '
+			   . $timer_name
+			:  str_pad(number_format($total_time, 3), 9, '0', STR_PAD_LEFT);
+	}
 
 
 

Spacing +10 added lines, -10 removed lines

@@ -129,7 +129,7 @@ 
     {
         add_action(
             'shutdown',
-            function () use ($formatted) {
+            function() use ($formatted) {
                 Benchmark::displayResults(true, $formatted);
             }
         );
@@ -149,7 +149,7 @@ 
     {
         add_action(
             'shutdown',
-            function () use ($filepath, $formatted, $append) {
+            function() use ($filepath, $formatted, $append) {
                 Benchmark::writeResultsToFile($filepath, $formatted, $append);
             }
         );
@@ -167,17 +167,17 @@ 
             return '';
         }
         $output = '';
-        if (! empty(Benchmark::$times)) {
+        if ( ! empty(Benchmark::$times)) {
             $total = 0;
             $output .= $formatted
                 ? '<span style="color:#999999; font-size:.8em;">( time in milliseconds )</span><br />'
                 : '';
             foreach (Benchmark::$times as $timer_name => $total_time) {
                 $output .= Benchmark::formatTime($timer_name, $total_time, $formatted);
-                $output .= $formatted ? '<br />'  : "\n";
+                $output .= $formatted ? '<br />' : "\n";
                 $total += $total_time;
             }
-            if($formatted) {
+            if ($formatted) {
                 $output .= '<br />';
                 $output .= '<h4>TOTAL TIME</h4>';
                 $output .= Benchmark::formatTime('', $total, $formatted);
@@ -192,7 +192,7 @@ 
                 $output .= '<span style="color:red">Like...HEEELLLP</span><br />';
             }
         }
-        if (! empty(Benchmark::$memory_usage)) {
+        if ( ! empty(Benchmark::$memory_usage)) {
             $output .= $formatted
                 ? '<h5>Memory</h5>'
                 : "\nMemory";
@@ -248,13 +248,13 @@ 
         $filepath = ! empty($filepath) && is_readable(dirname($filepath))
             ? $filepath
             : '';
-        if( empty($filepath)) {
-            $filepath = EVENT_ESPRESSO_UPLOAD_DIR . 'logs/benchmarking-' . date('Y-m-d') . '.html';
+        if (empty($filepath)) {
+            $filepath = EVENT_ESPRESSO_UPLOAD_DIR.'logs/benchmarking-'.date('Y-m-d').'.html';
         }
         EEH_File::ensure_file_exists_and_is_writable($filepath);
         file_put_contents(
             $filepath,
-            "\n" . date('Y-m-d H:i:s') . Benchmark::generateResults($formatted),
+            "\n".date('Y-m-d H:i:s').Benchmark::generateResults($formatted),
             $append ? FILE_APPEND | LOCK_EX : LOCK_EX
         );
     }
@@ -273,7 +273,7 @@ 
         return round(
             $size / pow(1024, $i = floor(log($size, 1024))),
             2
-        ) . ' ' . $unit[absint($i)];
+        ).' '.$unit[absint($i)];
     }
 
 

core/helpers/EEH_Activation.helper.php

Indentation +1581 added lines, -1581 removed lines

@@ -18,233 +18,233 @@ 
 class EEH_Activation implements ResettableInterface
 {
 
-    /**
-     * constant used to indicate a cron task is no longer in use
-     */
-    const cron_task_no_longer_in_use = 'no_longer_in_use';
-
-    /**
-     * WP_User->ID
-     *
-     * @var int
-     */
-    private static $_default_creator_id;
-
-    /**
-     * indicates whether or not we've already verified core's default data during this request,
-     * because after migrations are done, any addons activated while in maintenance mode
-     * will want to setup their own default data, and they might hook into core's default data
-     * and trigger core to setup its default data. In which case they might all ask for core to init its default data.
-     * This prevents doing that for EVERY single addon.
-     *
-     * @var boolean
-     */
-    protected static $_initialized_db_content_already_in_this_request = false;
-
-    /**
-     * @var \EventEspresso\core\services\database\TableAnalysis $table_analysis
-     */
-    private static $table_analysis;
-
-    /**
-     * @var \EventEspresso\core\services\database\TableManager $table_manager
-     */
-    private static $table_manager;
-
-
-    /**
-     * @return \EventEspresso\core\services\database\TableAnalysis
-     */
-    public static function getTableAnalysis()
-    {
-        if (! self::$table_analysis instanceof \EventEspresso\core\services\database\TableAnalysis) {
-            self::$table_analysis = EE_Registry::instance()->create('TableAnalysis', array(), true);
-        }
-        return self::$table_analysis;
-    }
-
-
-    /**
-     * @return \EventEspresso\core\services\database\TableManager
-     */
-    public static function getTableManager()
-    {
-        if (! self::$table_manager instanceof \EventEspresso\core\services\database\TableManager) {
-            self::$table_manager = EE_Registry::instance()->create('TableManager', array(), true);
-        }
-        return self::$table_manager;
-    }
-
-
-    /**
-     *    _ensure_table_name_has_prefix
-     *
-     * @deprecated instead use TableAnalysis::ensureTableNameHasPrefix()
-     * @access     public
-     * @static
-     * @param $table_name
-     * @return string
-     */
-    public static function ensure_table_name_has_prefix($table_name)
-    {
-        return \EEH_Activation::getTableAnalysis()->ensureTableNameHasPrefix($table_name);
-    }
-
-
-    /**
-     *    system_initialization
-     *    ensures the EE configuration settings are loaded with at least default options set
-     *    and that all critical EE pages have been generated with the appropriate shortcodes in place
-     *
-     * @access public
-     * @static
-     * @return void
-     */
-    public static function system_initialization()
-    {
-        EEH_Activation::reset_and_update_config();
-        //which is fired BEFORE activation of plugin anyways
-        EEH_Activation::verify_default_pages_exist();
-    }
-
-
-    /**
-     * Sets the database schema and creates folders. This should
-     * be called on plugin activation and reactivation
-     *
-     * @return boolean success, whether the database and folders are setup properly
-     * @throws \EE_Error
-     */
-    public static function initialize_db_and_folders()
-    {
-        return EEH_Activation::create_database_tables();
-    }
-
-
-    /**
-     * assuming we have an up-to-date database schema, this will populate it
-     * with default and initial data. This should be called
-     * upon activation of a new plugin, reactivation, and at the end
-     * of running migration scripts
-     *
-     * @throws \EE_Error
-     */
-    public static function initialize_db_content()
-    {
-        //let's avoid doing all this logic repeatedly, especially when addons are requesting it
-        if (EEH_Activation::$_initialized_db_content_already_in_this_request) {
-            return;
-        }
-        EEH_Activation::$_initialized_db_content_already_in_this_request = true;
-
-        EEH_Activation::initialize_system_questions();
-        EEH_Activation::insert_default_status_codes();
-        EEH_Activation::generate_default_message_templates();
-        EEH_Activation::create_no_ticket_prices_array();
-
-        EEH_Activation::validate_messages_system();
-        EEH_Activation::insert_default_payment_methods();
-        //in case we've
-        EEH_Activation::remove_cron_tasks();
-        EEH_Activation::create_cron_tasks();
-        // remove all TXN locks since that is being done via extra meta now
-        delete_option('ee_locked_transactions');
-        //also, check for CAF default db content
-        do_action('AHEE__EEH_Activation__initialize_db_content');
-        //also: EEM_Gateways::load_all_gateways() outputs a lot of success messages
-        //which users really won't care about on initial activation
-        EE_Error::overwrite_success();
-    }
-
-
-    /**
-     * Returns an array of cron tasks. Array values are the actions fired by the cron tasks (the "hooks"),
-     * values are the frequency (the "recurrence"). See http://codex.wordpress.org/Function_Reference/wp_schedule_event
-     * If the cron task should NO longer be used, it should have a value of EEH_Activation::cron_task_no_longer_in_use
-     * (null)
-     *
-     * @param string $which_to_include can be 'current' (ones that are currently in use),
-     *                                 'old' (only returns ones that should no longer be used),or 'all',
-     * @return array
-     * @throws \EE_Error
-     */
-    public static function get_cron_tasks($which_to_include)
-    {
-        $cron_tasks = apply_filters(
-            'FHEE__EEH_Activation__get_cron_tasks',
-            array(
-                'AHEE__EE_Cron_Tasks__clean_up_junk_transactions'      => 'hourly',
+	/**
+	 * constant used to indicate a cron task is no longer in use
+	 */
+	const cron_task_no_longer_in_use = 'no_longer_in_use';
+
+	/**
+	 * WP_User->ID
+	 *
+	 * @var int
+	 */
+	private static $_default_creator_id;
+
+	/**
+	 * indicates whether or not we've already verified core's default data during this request,
+	 * because after migrations are done, any addons activated while in maintenance mode
+	 * will want to setup their own default data, and they might hook into core's default data
+	 * and trigger core to setup its default data. In which case they might all ask for core to init its default data.
+	 * This prevents doing that for EVERY single addon.
+	 *
+	 * @var boolean
+	 */
+	protected static $_initialized_db_content_already_in_this_request = false;
+
+	/**
+	 * @var \EventEspresso\core\services\database\TableAnalysis $table_analysis
+	 */
+	private static $table_analysis;
+
+	/**
+	 * @var \EventEspresso\core\services\database\TableManager $table_manager
+	 */
+	private static $table_manager;
+
+
+	/**
+	 * @return \EventEspresso\core\services\database\TableAnalysis
+	 */
+	public static function getTableAnalysis()
+	{
+		if (! self::$table_analysis instanceof \EventEspresso\core\services\database\TableAnalysis) {
+			self::$table_analysis = EE_Registry::instance()->create('TableAnalysis', array(), true);
+		}
+		return self::$table_analysis;
+	}
+
+
+	/**
+	 * @return \EventEspresso\core\services\database\TableManager
+	 */
+	public static function getTableManager()
+	{
+		if (! self::$table_manager instanceof \EventEspresso\core\services\database\TableManager) {
+			self::$table_manager = EE_Registry::instance()->create('TableManager', array(), true);
+		}
+		return self::$table_manager;
+	}
+
+
+	/**
+	 *    _ensure_table_name_has_prefix
+	 *
+	 * @deprecated instead use TableAnalysis::ensureTableNameHasPrefix()
+	 * @access     public
+	 * @static
+	 * @param $table_name
+	 * @return string
+	 */
+	public static function ensure_table_name_has_prefix($table_name)
+	{
+		return \EEH_Activation::getTableAnalysis()->ensureTableNameHasPrefix($table_name);
+	}
+
+
+	/**
+	 *    system_initialization
+	 *    ensures the EE configuration settings are loaded with at least default options set
+	 *    and that all critical EE pages have been generated with the appropriate shortcodes in place
+	 *
+	 * @access public
+	 * @static
+	 * @return void
+	 */
+	public static function system_initialization()
+	{
+		EEH_Activation::reset_and_update_config();
+		//which is fired BEFORE activation of plugin anyways
+		EEH_Activation::verify_default_pages_exist();
+	}
+
+
+	/**
+	 * Sets the database schema and creates folders. This should
+	 * be called on plugin activation and reactivation
+	 *
+	 * @return boolean success, whether the database and folders are setup properly
+	 * @throws \EE_Error
+	 */
+	public static function initialize_db_and_folders()
+	{
+		return EEH_Activation::create_database_tables();
+	}
+
+
+	/**
+	 * assuming we have an up-to-date database schema, this will populate it
+	 * with default and initial data. This should be called
+	 * upon activation of a new plugin, reactivation, and at the end
+	 * of running migration scripts
+	 *
+	 * @throws \EE_Error
+	 */
+	public static function initialize_db_content()
+	{
+		//let's avoid doing all this logic repeatedly, especially when addons are requesting it
+		if (EEH_Activation::$_initialized_db_content_already_in_this_request) {
+			return;
+		}
+		EEH_Activation::$_initialized_db_content_already_in_this_request = true;
+
+		EEH_Activation::initialize_system_questions();
+		EEH_Activation::insert_default_status_codes();
+		EEH_Activation::generate_default_message_templates();
+		EEH_Activation::create_no_ticket_prices_array();
+
+		EEH_Activation::validate_messages_system();
+		EEH_Activation::insert_default_payment_methods();
+		//in case we've
+		EEH_Activation::remove_cron_tasks();
+		EEH_Activation::create_cron_tasks();
+		// remove all TXN locks since that is being done via extra meta now
+		delete_option('ee_locked_transactions');
+		//also, check for CAF default db content
+		do_action('AHEE__EEH_Activation__initialize_db_content');
+		//also: EEM_Gateways::load_all_gateways() outputs a lot of success messages
+		//which users really won't care about on initial activation
+		EE_Error::overwrite_success();
+	}
+
+
+	/**
+	 * Returns an array of cron tasks. Array values are the actions fired by the cron tasks (the "hooks"),
+	 * values are the frequency (the "recurrence"). See http://codex.wordpress.org/Function_Reference/wp_schedule_event
+	 * If the cron task should NO longer be used, it should have a value of EEH_Activation::cron_task_no_longer_in_use
+	 * (null)
+	 *
+	 * @param string $which_to_include can be 'current' (ones that are currently in use),
+	 *                                 'old' (only returns ones that should no longer be used),or 'all',
+	 * @return array
+	 * @throws \EE_Error
+	 */
+	public static function get_cron_tasks($which_to_include)
+	{
+		$cron_tasks = apply_filters(
+			'FHEE__EEH_Activation__get_cron_tasks',
+			array(
+				'AHEE__EE_Cron_Tasks__clean_up_junk_transactions'      => 'hourly',
 //				'AHEE__EE_Cron_Tasks__finalize_abandoned_transactions' => EEH_Activation::cron_task_no_longer_in_use, actually this is still in use
-                'AHEE__EE_Cron_Tasks__update_transaction_with_payment' => EEH_Activation::cron_task_no_longer_in_use,
-                //there may have been a bug which prevented from these cron tasks from getting unscheduled, so we might want to remove these for a few updates
-                'AHEE_EE_Cron_Tasks__clean_out_old_gateway_logs'       => 'daily',
-            )
-        );
-        if ($which_to_include === 'old') {
-            $cron_tasks = array_filter(
-                $cron_tasks,
-                function ($value) {
-                    return $value === EEH_Activation::cron_task_no_longer_in_use;
-                }
-            );
-        } elseif ($which_to_include === 'current') {
-            $cron_tasks = array_filter($cron_tasks);
-        } elseif (WP_DEBUG && $which_to_include !== 'all') {
-            throw new EE_Error(
-                sprintf(
-                    __(
-                        'Invalid argument of "%1$s" passed to EEH_Activation::get_cron_tasks. Valid values are "all", "old" and "current".',
-                        'event_espresso'
-                    ),
-                    $which_to_include
-                )
-            );
-        }
-        return $cron_tasks;
-    }
-
-
-    /**
-     * Ensure cron tasks are setup (the removal of crons should be done by remove_crons())
-     *
-     * @throws \EE_Error
-     */
-    public static function create_cron_tasks()
-    {
-
-        foreach (EEH_Activation::get_cron_tasks('current') as $hook_name => $frequency) {
-            if (! wp_next_scheduled($hook_name)) {
-                /**
-                 * This allows client code to define the initial start timestamp for this schedule.
-                 */
-                if (is_array($frequency)
-                    && count($frequency) === 2
-                    && isset($frequency[0], $frequency[1])
-                ) {
-                    $start_timestamp = $frequency[0];
-                    $frequency = $frequency[1];
-                } else {
-                    $start_timestamp = time();
-                }
-                wp_schedule_event($start_timestamp, $frequency, $hook_name);
-            }
-        }
-
-    }
-
-
-    /**
-     * Remove the currently-existing and now-removed cron tasks.
-     *
-     * @param boolean $remove_all whether to only remove the old ones, or remove absolutely ALL the EE ones
-     * @throws \EE_Error
-     */
-    public static function remove_cron_tasks($remove_all = true)
-    {
-        $cron_tasks_to_remove = $remove_all ? 'all' : 'old';
-        $crons                = _get_cron_array();
-        $crons                = is_array($crons) ? $crons : array();
-        /* reminder of what $crons look like:
+				'AHEE__EE_Cron_Tasks__update_transaction_with_payment' => EEH_Activation::cron_task_no_longer_in_use,
+				//there may have been a bug which prevented from these cron tasks from getting unscheduled, so we might want to remove these for a few updates
+				'AHEE_EE_Cron_Tasks__clean_out_old_gateway_logs'       => 'daily',
+			)
+		);
+		if ($which_to_include === 'old') {
+			$cron_tasks = array_filter(
+				$cron_tasks,
+				function ($value) {
+					return $value === EEH_Activation::cron_task_no_longer_in_use;
+				}
+			);
+		} elseif ($which_to_include === 'current') {
+			$cron_tasks = array_filter($cron_tasks);
+		} elseif (WP_DEBUG && $which_to_include !== 'all') {
+			throw new EE_Error(
+				sprintf(
+					__(
+						'Invalid argument of "%1$s" passed to EEH_Activation::get_cron_tasks. Valid values are "all", "old" and "current".',
+						'event_espresso'
+					),
+					$which_to_include
+				)
+			);
+		}
+		return $cron_tasks;
+	}
+
+
+	/**
+	 * Ensure cron tasks are setup (the removal of crons should be done by remove_crons())
+	 *
+	 * @throws \EE_Error
+	 */
+	public static function create_cron_tasks()
+	{
+
+		foreach (EEH_Activation::get_cron_tasks('current') as $hook_name => $frequency) {
+			if (! wp_next_scheduled($hook_name)) {
+				/**
+				 * This allows client code to define the initial start timestamp for this schedule.
+				 */
+				if (is_array($frequency)
+					&& count($frequency) === 2
+					&& isset($frequency[0], $frequency[1])
+				) {
+					$start_timestamp = $frequency[0];
+					$frequency = $frequency[1];
+				} else {
+					$start_timestamp = time();
+				}
+				wp_schedule_event($start_timestamp, $frequency, $hook_name);
+			}
+		}
+
+	}
+
+
+	/**
+	 * Remove the currently-existing and now-removed cron tasks.
+	 *
+	 * @param boolean $remove_all whether to only remove the old ones, or remove absolutely ALL the EE ones
+	 * @throws \EE_Error
+	 */
+	public static function remove_cron_tasks($remove_all = true)
+	{
+		$cron_tasks_to_remove = $remove_all ? 'all' : 'old';
+		$crons                = _get_cron_array();
+		$crons                = is_array($crons) ? $crons : array();
+		/* reminder of what $crons look like:
          * Top-level keys are timestamps, and their values are arrays.
          * The 2nd level arrays have keys with each of the cron task hook names to run at that time
          * and their values are arrays.
@@ -261,911 +261,911 @@ 
          *					...
          *      ...
          */
-        $ee_cron_tasks_to_remove = EEH_Activation::get_cron_tasks($cron_tasks_to_remove);
-        foreach ($crons as $timestamp => $hooks_to_fire_at_time) {
-            if (is_array($hooks_to_fire_at_time)) {
-                foreach ($hooks_to_fire_at_time as $hook_name => $hook_actions) {
-                    if (isset($ee_cron_tasks_to_remove[$hook_name])
-                        && is_array($ee_cron_tasks_to_remove[$hook_name])
-                    ) {
-                        unset($crons[$timestamp][$hook_name]);
-                    }
-                }
-                //also take care of any empty cron timestamps.
-                if (empty($hooks_to_fire_at_time)) {
-                    unset($crons[$timestamp]);
-                }
-            }
-        }
-        _set_cron_array($crons);
-    }
-
-
-    /**
-     *    CPT_initialization
-     *    registers all EE CPTs ( Custom Post Types ) then flushes rewrite rules so that all endpoints exist
-     *
-     * @access public
-     * @static
-     * @return void
-     */
-    public static function CPT_initialization()
-    {
-        // register Custom Post Types
-        EE_Registry::instance()->load_core('Register_CPTs');
-        flush_rewrite_rules();
-    }
-
-
-
-    /**
-     *    reset_and_update_config
-     * The following code was moved over from EE_Config so that it will no longer run on every request.
-     * If there is old calendar config data saved, then it will get converted on activation.
-     * This was basically a DMS before we had DMS's, and will get removed after a few more versions.
-     *
-     * @access public
-     * @static
-     * @return void
-     */
-    public static function reset_and_update_config()
-    {
-        do_action('AHEE__EE_Config___load_core_config__start', array('EEH_Activation', 'load_calendar_config'));
-        add_filter(
-            'FHEE__EE_Config___load_core_config__config_settings',
-            array('EEH_Activation', 'migrate_old_config_data'),
-            10,
-            3
-        );
-        //EE_Config::reset();
-        if (! EE_Config::logging_enabled()) {
-            delete_option(EE_Config::LOG_NAME);
-        }
-    }
-
-
-    /**
-     *    load_calendar_config
-     *
-     * @access    public
-     * @return    void
-     */
-    public static function load_calendar_config()
-    {
-        // grab array of all plugin folders and loop thru it
-        $plugins = glob(WP_PLUGIN_DIR . DS . '*', GLOB_ONLYDIR);
-        if (empty($plugins)) {
-            return;
-        }
-        foreach ($plugins as $plugin_path) {
-            // grab plugin folder name from path
-            $plugin = basename($plugin_path);
-            // drill down to Espresso plugins
-            // then to calendar related plugins
-            if (
-                strpos($plugin, 'espresso') !== false
-                || strpos($plugin, 'Espresso') !== false
-                || strpos($plugin, 'ee4') !== false
-                || strpos($plugin, 'EE4') !== false
-                || strpos($plugin, 'calendar') !== false
-            ) {
-                // this is what we are looking for
-                $calendar_config = $plugin_path . DS . 'EE_Calendar_Config.php';
-                // does it exist in this folder ?
-                if (is_readable($calendar_config)) {
-                    // YEAH! let's load it
-                    require_once($calendar_config);
-                }
-            }
-        }
-    }
-
-
-
-    /**
-     *    _migrate_old_config_data
-     *
-     * @access    public
-     * @param array|stdClass $settings
-     * @param string         $config
-     * @param \EE_Config     $EE_Config
-     * @return \stdClass
-     */
-    public static function migrate_old_config_data($settings = array(), $config = '', EE_Config $EE_Config)
-    {
-        $convert_from_array = array('addons');
-        // in case old settings were saved as an array
-        if (is_array($settings) && in_array($config, $convert_from_array)) {
-            // convert existing settings to an object
-            $config_array = $settings;
-            $settings = new stdClass();
-            foreach ($config_array as $key => $value) {
-                if ($key === 'calendar' && class_exists('EE_Calendar_Config')) {
-                    $EE_Config->set_config('addons', 'EE_Calendar', 'EE_Calendar_Config', $value);
-                } else {
-                    $settings->{$key} = $value;
-                }
-            }
-            add_filter('FHEE__EE_Config___load_core_config__update_espresso_config', '__return_true');
-        }
-        return $settings;
-    }
-
-
-    /**
-     * deactivate_event_espresso
-     *
-     * @access public
-     * @static
-     * @return void
-     */
-    public static function deactivate_event_espresso()
-    {
-        // check permissions
-        if (current_user_can('activate_plugins')) {
-            deactivate_plugins(EE_PLUGIN_BASENAME, true);
-        }
-    }
-
-
-
-    /**
-     * verify_default_pages_exist
-     *
-     * @access public
-     * @static
-     * @return void
-     * @throws InvalidDataTypeException
-     */
-    public static function verify_default_pages_exist()
-    {
-        $critical_page_problem = false;
-        $critical_pages = array(
-            array(
-                'id'   => 'reg_page_id',
-                'name' => __('Registration Checkout', 'event_espresso'),
-                'post' => null,
-                'code' => 'ESPRESSO_CHECKOUT',
-            ),
-            array(
-                'id'   => 'txn_page_id',
-                'name' => __('Transactions', 'event_espresso'),
-                'post' => null,
-                'code' => 'ESPRESSO_TXN_PAGE',
-            ),
-            array(
-                'id'   => 'thank_you_page_id',
-                'name' => __('Thank You', 'event_espresso'),
-                'post' => null,
-                'code' => 'ESPRESSO_THANK_YOU',
-            ),
-            array(
-                'id'   => 'cancel_page_id',
-                'name' => __('Registration Cancelled', 'event_espresso'),
-                'post' => null,
-                'code' => 'ESPRESSO_CANCELLED',
-            ),
-        );
-        $EE_Core_Config = EE_Registry::instance()->CFG->core;
-        foreach ($critical_pages as $critical_page) {
-            // is critical page ID set in config ?
-            if ($EE_Core_Config->{$critical_page['id']} !== false) {
-                // attempt to find post by ID
-                $critical_page['post'] = get_post($EE_Core_Config->{$critical_page['id']});
-            }
-            // no dice?
-            if ($critical_page['post'] === null) {
-                // attempt to find post by title
-                $critical_page['post'] = self::get_page_by_ee_shortcode($critical_page['code']);
-                // still nothing?
-                if ($critical_page['post'] === null) {
-                    $critical_page = EEH_Activation::create_critical_page($critical_page);
-                    // REALLY? Still nothing ??!?!?
-                    if ($critical_page['post'] === null) {
-                        $msg = __(
-                            'The Event Espresso critical page configuration settings could not be updated.',
-                            'event_espresso'
-                        );
-                        EE_Error::add_error($msg, __FILE__, __FUNCTION__, __LINE__);
-                        break;
-                    }
-                }
-            }
-            // check that Post ID matches critical page ID in config
-            if (
-                isset($critical_page['post']->ID)
-                && $critical_page['post']->ID !== $EE_Core_Config->{$critical_page['id']}
-            ) {
-                //update Config with post ID
-                $EE_Core_Config->{$critical_page['id']} = $critical_page['post']->ID;
-                if (! EE_Config::instance()->update_espresso_config(false, false)) {
-                    $msg = __(
-                        'The Event Espresso critical page configuration settings could not be updated.',
-                        'event_espresso'
-                    );
-                    EE_Error::add_error($msg, __FILE__, __FUNCTION__, __LINE__);
-                }
-            }
-            $critical_page_problem =
-                ! isset($critical_page['post']->post_status)
-                || $critical_page['post']->post_status !== 'publish'
-                || strpos($critical_page['post']->post_content, $critical_page['code']) === false
-                    ? true
-                    : $critical_page_problem;
-        }
-        if ($critical_page_problem) {
-            new PersistentAdminNotice(
-                'critical_page_problem',
-                sprintf(
-                    esc_html__(
-                        'A potential issue has been detected with one or more of your Event Espresso pages. Go to %s to view your Event Espresso pages.',
-                        'event_espresso'
-                    ),
-                    '<a href="' . admin_url('admin.php?page=espresso_general_settings&action=critical_pages') . '">'
-                    . __('Event Espresso Critical Pages Settings', 'event_espresso')
-                    . '</a>'
-                )
-            );
-        }
-        if (EE_Error::has_notices()) {
-            EE_Error::get_notices(false, true, true);
-        }
-    }
-
-
-
-    /**
-     * Returns the first post which uses the specified shortcode
-     *
-     * @param string $ee_shortcode usually one of the critical pages shortcodes, eg
-     *                             ESPRESSO_THANK_YOU. So we will search fora post with the content
-     *                             "[ESPRESSO_THANK_YOU"
-     *                             (we don't search for the closing shortcode bracket because they might have added
-     *                             parameter to the shortcode
-     * @return WP_Post or NULl
-     */
-    public static function get_page_by_ee_shortcode($ee_shortcode)
-    {
-        global $wpdb;
-        $shortcode_and_opening_bracket = '[' . $ee_shortcode;
-        $post_id = $wpdb->get_var("SELECT ID FROM {$wpdb->posts} WHERE post_content LIKE '%$shortcode_and_opening_bracket%' LIMIT 1");
-        if ($post_id) {
-            return get_post($post_id);
-        } else {
-            return null;
-        }
-    }
-
-
-    /**
-     *    This function generates a post for critical espresso pages
-     *
-     * @access public
-     * @static
-     * @param array $critical_page
-     * @return array
-     */
-    public static function create_critical_page($critical_page)
-    {
-
-        $post_args = array(
-            'post_title'     => $critical_page['name'],
-            'post_status'    => 'publish',
-            'post_type'      => 'page',
-            'comment_status' => 'closed',
-            'post_content'   => '[' . $critical_page['code'] . ']',
-        );
-
-        $post_id = wp_insert_post($post_args);
-        if (! $post_id) {
-            $msg = sprintf(
-                __('The Event Espresso  critical page entitled "%s" could not be created.', 'event_espresso'),
-                $critical_page['name']
-            );
-            EE_Error::add_error($msg, __FILE__, __FUNCTION__, __LINE__);
-            return $critical_page;
-        }
-        // get newly created post's details
-        if (! $critical_page['post'] = get_post($post_id)) {
-            $msg = sprintf(
-                __('The Event Espresso critical page entitled "%s" could not be retrieved.', 'event_espresso'),
-                $critical_page['name']
-            );
-            EE_Error::add_error($msg, __FILE__, __FUNCTION__, __LINE__);
-        }
-
-        return $critical_page;
-
-    }
-
-
-
-
-    /**
-     * Tries to find the oldest admin for this site.  If there are no admins for this site then return NULL.
-     * The role being used to check is filterable.
-     *
-     * @since  4.6.0
-     * @global WPDB $wpdb
-     * @return mixed null|int WP_user ID or NULL
-     */
-    public static function get_default_creator_id()
-    {
-        global $wpdb;
-        if ( ! empty(self::$_default_creator_id)) {
-            return self::$_default_creator_id;
-        }/**/
-        $role_to_check = apply_filters('FHEE__EEH_Activation__get_default_creator_id__role_to_check', 'administrator');
-        //let's allow pre_filtering for early exits by alternative methods for getting id.  We check for truthy result and if so then exit early.
-        $pre_filtered_id = apply_filters(
-            'FHEE__EEH_Activation__get_default_creator_id__pre_filtered_id',
-            false,
-            $role_to_check
-        );
-        if ($pre_filtered_id !== false) {
-            return (int)$pre_filtered_id;
-        }
-        $capabilities_key = \EEH_Activation::getTableAnalysis()->ensureTableNameHasPrefix('capabilities');
-        $query = $wpdb->prepare(
-            "SELECT user_id FROM $wpdb->usermeta WHERE meta_key = '$capabilities_key' AND meta_value LIKE %s ORDER BY user_id ASC LIMIT 0,1",
-            '%' . $role_to_check . '%'
-        );
-        $user_id = $wpdb->get_var($query);
-        $user_id = apply_filters('FHEE__EEH_Activation_Helper__get_default_creator_id__user_id', $user_id);
-        if ($user_id && (int)$user_id) {
-            self::$_default_creator_id = (int)$user_id;
-            return self::$_default_creator_id;
-        } else {
-            return null;
-        }
-    }
-
-
-
-    /**
-     * used by EE and EE addons during plugin activation to create tables.
-     * Its a wrapper for EventEspresso\core\services\database\TableManager::createTable,
-     * but includes extra logic regarding activations.
-     *
-     * @access public
-     * @static
-     * @param string  $table_name              without the $wpdb->prefix
-     * @param string  $sql                     SQL for creating the table (contents between brackets in an SQL create
-     *                                         table query)
-     * @param string  $engine                  like 'ENGINE=MyISAM' or 'ENGINE=InnoDB'
-     * @param boolean $drop_pre_existing_table set to TRUE when you want to make SURE the table is completely empty
-     *                                         and new once this function is done (ie, you really do want to CREATE a
-     *                                         table, and expect it to be empty once you're done) leave as FALSE when
-     *                                         you just want to verify the table exists and matches this definition
-     *                                         (and if it HAS data in it you want to leave it be)
-     * @return void
-     * @throws EE_Error if there are database errors
-     */
-    public static function create_table($table_name, $sql, $engine = 'ENGINE=MyISAM ', $drop_pre_existing_table = false)
-    {
-        if (apply_filters('FHEE__EEH_Activation__create_table__short_circuit', false, $table_name, $sql)) {
-            return;
-        }
-        do_action('AHEE_log', __FILE__, __FUNCTION__, '');
-        if ( ! function_exists('dbDelta')) {
-            require_once(ABSPATH . 'wp-admin/includes/upgrade.php');
-        }
-        $tableAnalysis = \EEH_Activation::getTableAnalysis();
-        $wp_table_name = $tableAnalysis->ensureTableNameHasPrefix($table_name);
-        // do we need to first delete an existing version of this table ?
-        if ($drop_pre_existing_table && $tableAnalysis->tableExists($wp_table_name)) {
-            // ok, delete the table... but ONLY if it's empty
-            $deleted_safely = EEH_Activation::delete_db_table_if_empty($wp_table_name);
-            // table is NOT empty, are you SURE you want to delete this table ???
-            if ( ! $deleted_safely && defined('EE_DROP_BAD_TABLES') && EE_DROP_BAD_TABLES) {
-                \EEH_Activation::getTableManager()->dropTable($wp_table_name);
-            } else if ( ! $deleted_safely) {
-                // so we should be more cautious rather than just dropping tables so easily
-                error_log(
-                    sprintf(
-                        __(
-                            'It appears that database table "%1$s" exists when it shouldn\'t, and therefore may contain erroneous data. If you have previously restored your database from a backup that didn\'t remove the old tables, then we recommend: %2$s 1. create a new COMPLETE backup of your database, %2$s 2. delete ALL tables from your database, %2$s 3. restore to your previous backup. %2$s If, however, you have not restored to a backup, then somehow your "%3$s" WordPress option could not be read. You can probably ignore this message, but should investigate why that option is being removed.',
-                            'event_espresso'
-                        ),
-                        $wp_table_name,
-                        '<br/>',
-                        'espresso_db_update'
-                    )
-                );
-            }
-        }
-        $engine = str_replace('ENGINE=', '', $engine);
-        \EEH_Activation::getTableManager()->createTable($table_name, $sql, $engine);
-    }
-
-
-
-    /**
-     *    add_column_if_it_doesn't_exist
-     *    Checks if this column already exists on the specified table. Handy for addons which want to add a column
-     *
-     * @access     public
-     * @static
-     * @deprecated instead use TableManager::addColumn()
-     * @param string $table_name  (without "wp_", eg "esp_attendee"
-     * @param string $column_name
-     * @param string $column_info if your SQL were 'ALTER TABLE table_name ADD price VARCHAR(10)', this would be
-     *                            'VARCHAR(10)'
-     * @return bool|int
-     */
-    public static function add_column_if_it_doesnt_exist(
-        $table_name,
-        $column_name,
-        $column_info = 'INT UNSIGNED NOT NULL'
-    ) {
-        return \EEH_Activation::getTableManager()->addColumn($table_name, $column_name, $column_info);
-    }
-
-
-    /**
-     * get_fields_on_table
-     * Gets all the fields on the database table.
-     *
-     * @access     public
-     * @deprecated instead use TableManager::getTableColumns()
-     * @static
-     * @param string $table_name , without prefixed $wpdb->prefix
-     * @return array of database column names
-     */
-    public static function get_fields_on_table($table_name = null)
-    {
-        return \EEH_Activation::getTableManager()->getTableColumns($table_name);
-    }
-
-
-    /**
-     * db_table_is_empty
-     *
-     * @access     public\
-     * @deprecated instead use TableAnalysis::tableIsEmpty()
-     * @static
-     * @param string $table_name
-     * @return bool
-     */
-    public static function db_table_is_empty($table_name)
-    {
-        return \EEH_Activation::getTableAnalysis()->tableIsEmpty($table_name);
-    }
-
-
-    /**
-     * delete_db_table_if_empty
-     *
-     * @access public
-     * @static
-     * @param string $table_name
-     * @return bool | int
-     */
-    public static function delete_db_table_if_empty($table_name)
-    {
-        if (\EEH_Activation::getTableAnalysis()->tableIsEmpty($table_name)) {
-            return \EEH_Activation::getTableManager()->dropTable($table_name);
-        }
-        return false;
-    }
-
-
-    /**
-     * delete_unused_db_table
-     *
-     * @access     public
-     * @static
-     * @deprecated instead use TableManager::dropTable()
-     * @param string $table_name
-     * @return bool | int
-     */
-    public static function delete_unused_db_table($table_name)
-    {
-        return \EEH_Activation::getTableManager()->dropTable($table_name);
-    }
-
-
-    /**
-     * drop_index
-     *
-     * @access     public
-     * @static
-     * @deprecated instead use TableManager::dropIndex()
-     * @param string $table_name
-     * @param string $index_name
-     * @return bool | int
-     */
-    public static function drop_index($table_name, $index_name)
-    {
-        return \EEH_Activation::getTableManager()->dropIndex($table_name, $index_name);
-    }
-
-
-
-    /**
-     * create_database_tables
-     *
-     * @access public
-     * @static
-     * @throws EE_Error
-     * @return boolean success (whether database is setup properly or not)
-     */
-    public static function create_database_tables()
-    {
-        EE_Registry::instance()->load_core('Data_Migration_Manager');
-        //find the migration script that sets the database to be compatible with the code
-        $dms_name = EE_Data_Migration_Manager::instance()->get_most_up_to_date_dms();
-        if ($dms_name) {
-            $current_data_migration_script = EE_Registry::instance()->load_dms($dms_name);
-            $current_data_migration_script->set_migrating(false);
-            $current_data_migration_script->schema_changes_before_migration();
-            $current_data_migration_script->schema_changes_after_migration();
-            if ($current_data_migration_script->get_errors()) {
-                if (WP_DEBUG) {
-                    foreach ($current_data_migration_script->get_errors() as $error) {
-                        EE_Error::add_error($error, __FILE__, __FUNCTION__, __LINE__);
-                    }
-                } else {
-                    EE_Error::add_error(
-                        __(
-                            'There were errors creating the Event Espresso database tables and Event Espresso has been 
+		$ee_cron_tasks_to_remove = EEH_Activation::get_cron_tasks($cron_tasks_to_remove);
+		foreach ($crons as $timestamp => $hooks_to_fire_at_time) {
+			if (is_array($hooks_to_fire_at_time)) {
+				foreach ($hooks_to_fire_at_time as $hook_name => $hook_actions) {
+					if (isset($ee_cron_tasks_to_remove[$hook_name])
+						&& is_array($ee_cron_tasks_to_remove[$hook_name])
+					) {
+						unset($crons[$timestamp][$hook_name]);
+					}
+				}
+				//also take care of any empty cron timestamps.
+				if (empty($hooks_to_fire_at_time)) {
+					unset($crons[$timestamp]);
+				}
+			}
+		}
+		_set_cron_array($crons);
+	}
+
+
+	/**
+	 *    CPT_initialization
+	 *    registers all EE CPTs ( Custom Post Types ) then flushes rewrite rules so that all endpoints exist
+	 *
+	 * @access public
+	 * @static
+	 * @return void
+	 */
+	public static function CPT_initialization()
+	{
+		// register Custom Post Types
+		EE_Registry::instance()->load_core('Register_CPTs');
+		flush_rewrite_rules();
+	}
+
+
+
+	/**
+	 *    reset_and_update_config
+	 * The following code was moved over from EE_Config so that it will no longer run on every request.
+	 * If there is old calendar config data saved, then it will get converted on activation.
+	 * This was basically a DMS before we had DMS's, and will get removed after a few more versions.
+	 *
+	 * @access public
+	 * @static
+	 * @return void
+	 */
+	public static function reset_and_update_config()
+	{
+		do_action('AHEE__EE_Config___load_core_config__start', array('EEH_Activation', 'load_calendar_config'));
+		add_filter(
+			'FHEE__EE_Config___load_core_config__config_settings',
+			array('EEH_Activation', 'migrate_old_config_data'),
+			10,
+			3
+		);
+		//EE_Config::reset();
+		if (! EE_Config::logging_enabled()) {
+			delete_option(EE_Config::LOG_NAME);
+		}
+	}
+
+
+	/**
+	 *    load_calendar_config
+	 *
+	 * @access    public
+	 * @return    void
+	 */
+	public static function load_calendar_config()
+	{
+		// grab array of all plugin folders and loop thru it
+		$plugins = glob(WP_PLUGIN_DIR . DS . '*', GLOB_ONLYDIR);
+		if (empty($plugins)) {
+			return;
+		}
+		foreach ($plugins as $plugin_path) {
+			// grab plugin folder name from path
+			$plugin = basename($plugin_path);
+			// drill down to Espresso plugins
+			// then to calendar related plugins
+			if (
+				strpos($plugin, 'espresso') !== false
+				|| strpos($plugin, 'Espresso') !== false
+				|| strpos($plugin, 'ee4') !== false
+				|| strpos($plugin, 'EE4') !== false
+				|| strpos($plugin, 'calendar') !== false
+			) {
+				// this is what we are looking for
+				$calendar_config = $plugin_path . DS . 'EE_Calendar_Config.php';
+				// does it exist in this folder ?
+				if (is_readable($calendar_config)) {
+					// YEAH! let's load it
+					require_once($calendar_config);
+				}
+			}
+		}
+	}
+
+
+
+	/**
+	 *    _migrate_old_config_data
+	 *
+	 * @access    public
+	 * @param array|stdClass $settings
+	 * @param string         $config
+	 * @param \EE_Config     $EE_Config
+	 * @return \stdClass
+	 */
+	public static function migrate_old_config_data($settings = array(), $config = '', EE_Config $EE_Config)
+	{
+		$convert_from_array = array('addons');
+		// in case old settings were saved as an array
+		if (is_array($settings) && in_array($config, $convert_from_array)) {
+			// convert existing settings to an object
+			$config_array = $settings;
+			$settings = new stdClass();
+			foreach ($config_array as $key => $value) {
+				if ($key === 'calendar' && class_exists('EE_Calendar_Config')) {
+					$EE_Config->set_config('addons', 'EE_Calendar', 'EE_Calendar_Config', $value);
+				} else {
+					$settings->{$key} = $value;
+				}
+			}
+			add_filter('FHEE__EE_Config___load_core_config__update_espresso_config', '__return_true');
+		}
+		return $settings;
+	}
+
+
+	/**
+	 * deactivate_event_espresso
+	 *
+	 * @access public
+	 * @static
+	 * @return void
+	 */
+	public static function deactivate_event_espresso()
+	{
+		// check permissions
+		if (current_user_can('activate_plugins')) {
+			deactivate_plugins(EE_PLUGIN_BASENAME, true);
+		}
+	}
+
+
+
+	/**
+	 * verify_default_pages_exist
+	 *
+	 * @access public
+	 * @static
+	 * @return void
+	 * @throws InvalidDataTypeException
+	 */
+	public static function verify_default_pages_exist()
+	{
+		$critical_page_problem = false;
+		$critical_pages = array(
+			array(
+				'id'   => 'reg_page_id',
+				'name' => __('Registration Checkout', 'event_espresso'),
+				'post' => null,
+				'code' => 'ESPRESSO_CHECKOUT',
+			),
+			array(
+				'id'   => 'txn_page_id',
+				'name' => __('Transactions', 'event_espresso'),
+				'post' => null,
+				'code' => 'ESPRESSO_TXN_PAGE',
+			),
+			array(
+				'id'   => 'thank_you_page_id',
+				'name' => __('Thank You', 'event_espresso'),
+				'post' => null,
+				'code' => 'ESPRESSO_THANK_YOU',
+			),
+			array(
+				'id'   => 'cancel_page_id',
+				'name' => __('Registration Cancelled', 'event_espresso'),
+				'post' => null,
+				'code' => 'ESPRESSO_CANCELLED',
+			),
+		);
+		$EE_Core_Config = EE_Registry::instance()->CFG->core;
+		foreach ($critical_pages as $critical_page) {
+			// is critical page ID set in config ?
+			if ($EE_Core_Config->{$critical_page['id']} !== false) {
+				// attempt to find post by ID
+				$critical_page['post'] = get_post($EE_Core_Config->{$critical_page['id']});
+			}
+			// no dice?
+			if ($critical_page['post'] === null) {
+				// attempt to find post by title
+				$critical_page['post'] = self::get_page_by_ee_shortcode($critical_page['code']);
+				// still nothing?
+				if ($critical_page['post'] === null) {
+					$critical_page = EEH_Activation::create_critical_page($critical_page);
+					// REALLY? Still nothing ??!?!?
+					if ($critical_page['post'] === null) {
+						$msg = __(
+							'The Event Espresso critical page configuration settings could not be updated.',
+							'event_espresso'
+						);
+						EE_Error::add_error($msg, __FILE__, __FUNCTION__, __LINE__);
+						break;
+					}
+				}
+			}
+			// check that Post ID matches critical page ID in config
+			if (
+				isset($critical_page['post']->ID)
+				&& $critical_page['post']->ID !== $EE_Core_Config->{$critical_page['id']}
+			) {
+				//update Config with post ID
+				$EE_Core_Config->{$critical_page['id']} = $critical_page['post']->ID;
+				if (! EE_Config::instance()->update_espresso_config(false, false)) {
+					$msg = __(
+						'The Event Espresso critical page configuration settings could not be updated.',
+						'event_espresso'
+					);
+					EE_Error::add_error($msg, __FILE__, __FUNCTION__, __LINE__);
+				}
+			}
+			$critical_page_problem =
+				! isset($critical_page['post']->post_status)
+				|| $critical_page['post']->post_status !== 'publish'
+				|| strpos($critical_page['post']->post_content, $critical_page['code']) === false
+					? true
+					: $critical_page_problem;
+		}
+		if ($critical_page_problem) {
+			new PersistentAdminNotice(
+				'critical_page_problem',
+				sprintf(
+					esc_html__(
+						'A potential issue has been detected with one or more of your Event Espresso pages. Go to %s to view your Event Espresso pages.',
+						'event_espresso'
+					),
+					'<a href="' . admin_url('admin.php?page=espresso_general_settings&action=critical_pages') . '">'
+					. __('Event Espresso Critical Pages Settings', 'event_espresso')
+					. '</a>'
+				)
+			);
+		}
+		if (EE_Error::has_notices()) {
+			EE_Error::get_notices(false, true, true);
+		}
+	}
+
+
+
+	/**
+	 * Returns the first post which uses the specified shortcode
+	 *
+	 * @param string $ee_shortcode usually one of the critical pages shortcodes, eg
+	 *                             ESPRESSO_THANK_YOU. So we will search fora post with the content
+	 *                             "[ESPRESSO_THANK_YOU"
+	 *                             (we don't search for the closing shortcode bracket because they might have added
+	 *                             parameter to the shortcode
+	 * @return WP_Post or NULl
+	 */
+	public static function get_page_by_ee_shortcode($ee_shortcode)
+	{
+		global $wpdb;
+		$shortcode_and_opening_bracket = '[' . $ee_shortcode;
+		$post_id = $wpdb->get_var("SELECT ID FROM {$wpdb->posts} WHERE post_content LIKE '%$shortcode_and_opening_bracket%' LIMIT 1");
+		if ($post_id) {
+			return get_post($post_id);
+		} else {
+			return null;
+		}
+	}
+
+
+	/**
+	 *    This function generates a post for critical espresso pages
+	 *
+	 * @access public
+	 * @static
+	 * @param array $critical_page
+	 * @return array
+	 */
+	public static function create_critical_page($critical_page)
+	{
+
+		$post_args = array(
+			'post_title'     => $critical_page['name'],
+			'post_status'    => 'publish',
+			'post_type'      => 'page',
+			'comment_status' => 'closed',
+			'post_content'   => '[' . $critical_page['code'] . ']',
+		);
+
+		$post_id = wp_insert_post($post_args);
+		if (! $post_id) {
+			$msg = sprintf(
+				__('The Event Espresso  critical page entitled "%s" could not be created.', 'event_espresso'),
+				$critical_page['name']
+			);
+			EE_Error::add_error($msg, __FILE__, __FUNCTION__, __LINE__);
+			return $critical_page;
+		}
+		// get newly created post's details
+		if (! $critical_page['post'] = get_post($post_id)) {
+			$msg = sprintf(
+				__('The Event Espresso critical page entitled "%s" could not be retrieved.', 'event_espresso'),
+				$critical_page['name']
+			);
+			EE_Error::add_error($msg, __FILE__, __FUNCTION__, __LINE__);
+		}
+
+		return $critical_page;
+
+	}
+
+
+
+
+	/**
+	 * Tries to find the oldest admin for this site.  If there are no admins for this site then return NULL.
+	 * The role being used to check is filterable.
+	 *
+	 * @since  4.6.0
+	 * @global WPDB $wpdb
+	 * @return mixed null|int WP_user ID or NULL
+	 */
+	public static function get_default_creator_id()
+	{
+		global $wpdb;
+		if ( ! empty(self::$_default_creator_id)) {
+			return self::$_default_creator_id;
+		}/**/
+		$role_to_check = apply_filters('FHEE__EEH_Activation__get_default_creator_id__role_to_check', 'administrator');
+		//let's allow pre_filtering for early exits by alternative methods for getting id.  We check for truthy result and if so then exit early.
+		$pre_filtered_id = apply_filters(
+			'FHEE__EEH_Activation__get_default_creator_id__pre_filtered_id',
+			false,
+			$role_to_check
+		);
+		if ($pre_filtered_id !== false) {
+			return (int)$pre_filtered_id;
+		}
+		$capabilities_key = \EEH_Activation::getTableAnalysis()->ensureTableNameHasPrefix('capabilities');
+		$query = $wpdb->prepare(
+			"SELECT user_id FROM $wpdb->usermeta WHERE meta_key = '$capabilities_key' AND meta_value LIKE %s ORDER BY user_id ASC LIMIT 0,1",
+			'%' . $role_to_check . '%'
+		);
+		$user_id = $wpdb->get_var($query);
+		$user_id = apply_filters('FHEE__EEH_Activation_Helper__get_default_creator_id__user_id', $user_id);
+		if ($user_id && (int)$user_id) {
+			self::$_default_creator_id = (int)$user_id;
+			return self::$_default_creator_id;
+		} else {
+			return null;
+		}
+	}
+
+
+
+	/**
+	 * used by EE and EE addons during plugin activation to create tables.
+	 * Its a wrapper for EventEspresso\core\services\database\TableManager::createTable,
+	 * but includes extra logic regarding activations.
+	 *
+	 * @access public
+	 * @static
+	 * @param string  $table_name              without the $wpdb->prefix
+	 * @param string  $sql                     SQL for creating the table (contents between brackets in an SQL create
+	 *                                         table query)
+	 * @param string  $engine                  like 'ENGINE=MyISAM' or 'ENGINE=InnoDB'
+	 * @param boolean $drop_pre_existing_table set to TRUE when you want to make SURE the table is completely empty
+	 *                                         and new once this function is done (ie, you really do want to CREATE a
+	 *                                         table, and expect it to be empty once you're done) leave as FALSE when
+	 *                                         you just want to verify the table exists and matches this definition
+	 *                                         (and if it HAS data in it you want to leave it be)
+	 * @return void
+	 * @throws EE_Error if there are database errors
+	 */
+	public static function create_table($table_name, $sql, $engine = 'ENGINE=MyISAM ', $drop_pre_existing_table = false)
+	{
+		if (apply_filters('FHEE__EEH_Activation__create_table__short_circuit', false, $table_name, $sql)) {
+			return;
+		}
+		do_action('AHEE_log', __FILE__, __FUNCTION__, '');
+		if ( ! function_exists('dbDelta')) {
+			require_once(ABSPATH . 'wp-admin/includes/upgrade.php');
+		}
+		$tableAnalysis = \EEH_Activation::getTableAnalysis();
+		$wp_table_name = $tableAnalysis->ensureTableNameHasPrefix($table_name);
+		// do we need to first delete an existing version of this table ?
+		if ($drop_pre_existing_table && $tableAnalysis->tableExists($wp_table_name)) {
+			// ok, delete the table... but ONLY if it's empty
+			$deleted_safely = EEH_Activation::delete_db_table_if_empty($wp_table_name);
+			// table is NOT empty, are you SURE you want to delete this table ???
+			if ( ! $deleted_safely && defined('EE_DROP_BAD_TABLES') && EE_DROP_BAD_TABLES) {
+				\EEH_Activation::getTableManager()->dropTable($wp_table_name);
+			} else if ( ! $deleted_safely) {
+				// so we should be more cautious rather than just dropping tables so easily
+				error_log(
+					sprintf(
+						__(
+							'It appears that database table "%1$s" exists when it shouldn\'t, and therefore may contain erroneous data. If you have previously restored your database from a backup that didn\'t remove the old tables, then we recommend: %2$s 1. create a new COMPLETE backup of your database, %2$s 2. delete ALL tables from your database, %2$s 3. restore to your previous backup. %2$s If, however, you have not restored to a backup, then somehow your "%3$s" WordPress option could not be read. You can probably ignore this message, but should investigate why that option is being removed.',
+							'event_espresso'
+						),
+						$wp_table_name,
+						'<br/>',
+						'espresso_db_update'
+					)
+				);
+			}
+		}
+		$engine = str_replace('ENGINE=', '', $engine);
+		\EEH_Activation::getTableManager()->createTable($table_name, $sql, $engine);
+	}
+
+
+
+	/**
+	 *    add_column_if_it_doesn't_exist
+	 *    Checks if this column already exists on the specified table. Handy for addons which want to add a column
+	 *
+	 * @access     public
+	 * @static
+	 * @deprecated instead use TableManager::addColumn()
+	 * @param string $table_name  (without "wp_", eg "esp_attendee"
+	 * @param string $column_name
+	 * @param string $column_info if your SQL were 'ALTER TABLE table_name ADD price VARCHAR(10)', this would be
+	 *                            'VARCHAR(10)'
+	 * @return bool|int
+	 */
+	public static function add_column_if_it_doesnt_exist(
+		$table_name,
+		$column_name,
+		$column_info = 'INT UNSIGNED NOT NULL'
+	) {
+		return \EEH_Activation::getTableManager()->addColumn($table_name, $column_name, $column_info);
+	}
+
+
+	/**
+	 * get_fields_on_table
+	 * Gets all the fields on the database table.
+	 *
+	 * @access     public
+	 * @deprecated instead use TableManager::getTableColumns()
+	 * @static
+	 * @param string $table_name , without prefixed $wpdb->prefix
+	 * @return array of database column names
+	 */
+	public static function get_fields_on_table($table_name = null)
+	{
+		return \EEH_Activation::getTableManager()->getTableColumns($table_name);
+	}
+
+
+	/**
+	 * db_table_is_empty
+	 *
+	 * @access     public\
+	 * @deprecated instead use TableAnalysis::tableIsEmpty()
+	 * @static
+	 * @param string $table_name
+	 * @return bool
+	 */
+	public static function db_table_is_empty($table_name)
+	{
+		return \EEH_Activation::getTableAnalysis()->tableIsEmpty($table_name);
+	}
+
+
+	/**
+	 * delete_db_table_if_empty
+	 *
+	 * @access public
+	 * @static
+	 * @param string $table_name
+	 * @return bool | int
+	 */
+	public static function delete_db_table_if_empty($table_name)
+	{
+		if (\EEH_Activation::getTableAnalysis()->tableIsEmpty($table_name)) {
+			return \EEH_Activation::getTableManager()->dropTable($table_name);
+		}
+		return false;
+	}
+
+
+	/**
+	 * delete_unused_db_table
+	 *
+	 * @access     public
+	 * @static
+	 * @deprecated instead use TableManager::dropTable()
+	 * @param string $table_name
+	 * @return bool | int
+	 */
+	public static function delete_unused_db_table($table_name)
+	{
+		return \EEH_Activation::getTableManager()->dropTable($table_name);
+	}
+
+
+	/**
+	 * drop_index
+	 *
+	 * @access     public
+	 * @static
+	 * @deprecated instead use TableManager::dropIndex()
+	 * @param string $table_name
+	 * @param string $index_name
+	 * @return bool | int
+	 */
+	public static function drop_index($table_name, $index_name)
+	{
+		return \EEH_Activation::getTableManager()->dropIndex($table_name, $index_name);
+	}
+
+
+
+	/**
+	 * create_database_tables
+	 *
+	 * @access public
+	 * @static
+	 * @throws EE_Error
+	 * @return boolean success (whether database is setup properly or not)
+	 */
+	public static function create_database_tables()
+	{
+		EE_Registry::instance()->load_core('Data_Migration_Manager');
+		//find the migration script that sets the database to be compatible with the code
+		$dms_name = EE_Data_Migration_Manager::instance()->get_most_up_to_date_dms();
+		if ($dms_name) {
+			$current_data_migration_script = EE_Registry::instance()->load_dms($dms_name);
+			$current_data_migration_script->set_migrating(false);
+			$current_data_migration_script->schema_changes_before_migration();
+			$current_data_migration_script->schema_changes_after_migration();
+			if ($current_data_migration_script->get_errors()) {
+				if (WP_DEBUG) {
+					foreach ($current_data_migration_script->get_errors() as $error) {
+						EE_Error::add_error($error, __FILE__, __FUNCTION__, __LINE__);
+					}
+				} else {
+					EE_Error::add_error(
+						__(
+							'There were errors creating the Event Espresso database tables and Event Espresso has been 
                             deactivated. To view the errors, please enable WP_DEBUG in your wp-config.php file.',
-                            'event_espresso'
-                        )
-                    );
-                }
-                return false;
-            }
-            EE_Data_Migration_Manager::instance()->update_current_database_state_to();
-        } else {
-            EE_Error::add_error(
-                __(
-                    'Could not determine most up-to-date data migration script from which to pull database schema
+							'event_espresso'
+						)
+					);
+				}
+				return false;
+			}
+			EE_Data_Migration_Manager::instance()->update_current_database_state_to();
+		} else {
+			EE_Error::add_error(
+				__(
+					'Could not determine most up-to-date data migration script from which to pull database schema
                      structure. So database is probably not setup properly',
-                    'event_espresso'
-                ),
-                __FILE__,
-                __FUNCTION__,
-                __LINE__
-            );
-            return false;
-        }
-        return true;
-    }
-
-
-
-    /**
-     * initialize_system_questions
-     *
-     * @access public
-     * @static
-     * @return void
-     */
-    public static function initialize_system_questions()
-    {
-        // QUESTION GROUPS
-        global $wpdb;
-        $table_name = \EEH_Activation::getTableAnalysis()->ensureTableNameHasPrefix('esp_question_group');
-        $SQL = "SELECT QSG_system FROM $table_name WHERE QSG_system != 0";
-        // what we have
-        $question_groups = $wpdb->get_col($SQL);
-        // check the response
-        $question_groups = is_array($question_groups) ? $question_groups : array();
-        // what we should have
-        $QSG_systems = array(1, 2);
-        // loop thru what we should have and compare to what we have
-        foreach ($QSG_systems as $QSG_system) {
-            // reset values array
-            $QSG_values = array();
-            // if we don't have what we should have (but use $QST_system as as string because that's what we got from the db)
-            if (! in_array("$QSG_system", $question_groups)) {
-                // add it
-                switch ($QSG_system) {
-                    case 1:
-                        $QSG_values = array(
-                            'QSG_name'            => __('Personal Information', 'event_espresso'),
-                            'QSG_identifier'      => 'personal-information-' . time(),
-                            'QSG_desc'            => '',
-                            'QSG_order'           => 1,
-                            'QSG_show_group_name' => 1,
-                            'QSG_show_group_desc' => 1,
-                            'QSG_system'          => EEM_Question_Group::system_personal,
-                            'QSG_deleted'         => 0,
-                        );
-                        break;
-                    case 2:
-                        $QSG_values = array(
-                            'QSG_name'            => __('Address Information', 'event_espresso'),
-                            'QSG_identifier'      => 'address-information-' . time(),
-                            'QSG_desc'            => '',
-                            'QSG_order'           => 2,
-                            'QSG_show_group_name' => 1,
-                            'QSG_show_group_desc' => 1,
-                            'QSG_system'          => EEM_Question_Group::system_address,
-                            'QSG_deleted'         => 0,
-                        );
-                        break;
-                }
-                // make sure we have some values before inserting them
-                if (! empty($QSG_values)) {
-                    // insert system question
-                    $wpdb->insert(
-                        $table_name,
-                        $QSG_values,
-                        array('%s', '%s', '%s', '%d', '%d', '%d', '%d', '%d')
-                    );
-                    $QSG_IDs[$QSG_system] = $wpdb->insert_id;
-                }
-            }
-        }
-        // QUESTIONS
-        global $wpdb;
-        $table_name = \EEH_Activation::getTableAnalysis()->ensureTableNameHasPrefix('esp_question');
-        $SQL = "SELECT QST_system FROM $table_name WHERE QST_system != ''";
-        // what we have
-        $questions = $wpdb->get_col($SQL);
-        // what we should have
-        $QST_systems = array(
-            'fname',
-            'lname',
-            'email',
-            'address',
-            'address2',
-            'city',
-            'country',
-            'state',
-            'zip',
-            'phone',
-        );
-        $order_for_group_1 = 1;
-        $order_for_group_2 = 1;
-        // loop thru what we should have and compare to what we have
-        foreach ($QST_systems as $QST_system) {
-            // reset values array
-            $QST_values = array();
-            // if we don't have what we should have
-            if (! in_array($QST_system, $questions)) {
-                // add it
-                switch ($QST_system) {
-                    case 'fname':
-                        $QST_values = array(
-                            'QST_display_text'  => __('First Name', 'event_espresso'),
-                            'QST_admin_label'   => __('First Name - System Question', 'event_espresso'),
-                            'QST_system'        => 'fname',
-                            'QST_type'          => 'TEXT',
-                            'QST_required'      => 1,
-                            'QST_required_text' => __('This field is required', 'event_espresso'),
-                            'QST_order'         => 1,
-                            'QST_admin_only'    => 0,
-                            'QST_max'           => EEM_Question::instance()->absolute_max_for_system_question($QST_system),
-                            'QST_wp_user'       => self::get_default_creator_id(),
-                            'QST_deleted'       => 0,
-                        );
-                        break;
-                    case 'lname':
-                        $QST_values = array(
-                            'QST_display_text'  => __('Last Name', 'event_espresso'),
-                            'QST_admin_label'   => __('Last Name - System Question', 'event_espresso'),
-                            'QST_system'        => 'lname',
-                            'QST_type'          => 'TEXT',
-                            'QST_required'      => 1,
-                            'QST_required_text' => __('This field is required', 'event_espresso'),
-                            'QST_order'         => 2,
-                            'QST_admin_only'    => 0,
-                            'QST_max'           => EEM_Question::instance()->absolute_max_for_system_question($QST_system),
-                            'QST_wp_user'       => self::get_default_creator_id(),
-                            'QST_deleted'       => 0,
-                        );
-                        break;
-                    case 'email':
-                        $QST_values = array(
-                            'QST_display_text'  => __('Email Address', 'event_espresso'),
-                            'QST_admin_label'   => __('Email Address - System Question', 'event_espresso'),
-                            'QST_system'        => 'email',
-                            'QST_type'          => 'EMAIL',
-                            'QST_required'      => 1,
-                            'QST_required_text' => __('This field is required', 'event_espresso'),
-                            'QST_order'         => 3,
-                            'QST_admin_only'    => 0,
-                            'QST_max'           => EEM_Question::instance()->absolute_max_for_system_question($QST_system),
-                            'QST_wp_user'       => self::get_default_creator_id(),
-                            'QST_deleted'       => 0,
-                        );
-                        break;
-                    case 'address':
-                        $QST_values = array(
-                            'QST_display_text'  => __('Address', 'event_espresso'),
-                            'QST_admin_label'   => __('Address - System Question', 'event_espresso'),
-                            'QST_system'        => 'address',
-                            'QST_type'          => 'TEXT',
-                            'QST_required'      => 0,
-                            'QST_required_text' => __('This field is required', 'event_espresso'),
-                            'QST_order'         => 4,
-                            'QST_admin_only'    => 0,
-                            'QST_max'           => EEM_Question::instance()->absolute_max_for_system_question($QST_system),
-                            'QST_wp_user'       => self::get_default_creator_id(),
-                            'QST_deleted'       => 0,
-                        );
-                        break;
-                    case 'address2':
-                        $QST_values = array(
-                            'QST_display_text'  => __('Address2', 'event_espresso'),
-                            'QST_admin_label'   => __('Address2 - System Question', 'event_espresso'),
-                            'QST_system'        => 'address2',
-                            'QST_type'          => 'TEXT',
-                            'QST_required'      => 0,
-                            'QST_required_text' => __('This field is required', 'event_espresso'),
-                            'QST_order'         => 5,
-                            'QST_admin_only'    => 0,
-                            'QST_max'           => EEM_Question::instance()->absolute_max_for_system_question($QST_system),
-                            'QST_wp_user'       => self::get_default_creator_id(),
-                            'QST_deleted'       => 0,
-                        );
-                        break;
-                    case 'city':
-                        $QST_values = array(
-                            'QST_display_text'  => __('City', 'event_espresso'),
-                            'QST_admin_label'   => __('City - System Question', 'event_espresso'),
-                            'QST_system'        => 'city',
-                            'QST_type'          => 'TEXT',
-                            'QST_required'      => 0,
-                            'QST_required_text' => __('This field is required', 'event_espresso'),
-                            'QST_order'         => 6,
-                            'QST_admin_only'    => 0,
-                            'QST_max'           => EEM_Question::instance()->absolute_max_for_system_question($QST_system),
-                            'QST_wp_user'       => self::get_default_creator_id(),
-                            'QST_deleted'       => 0,
-                        );
-                        break;
-                    case 'country':
-                        $QST_values = array(
-                            'QST_display_text'  => __('Country', 'event_espresso'),
-                            'QST_admin_label'   => __('Country - System Question', 'event_espresso'),
-                            'QST_system'        => 'country',
-                            'QST_type'          => 'COUNTRY',
-                            'QST_required'      => 0,
-                            'QST_required_text' => __('This field is required', 'event_espresso'),
-                            'QST_order'         => 7,
-                            'QST_admin_only'    => 0,
-                            'QST_wp_user'       => self::get_default_creator_id(),
-                            'QST_deleted'       => 0,
-                        );
-                        break;
-                    case 'state':
-                        $QST_values = array(
-                            'QST_display_text'  => __('State/Province', 'event_espresso'),
-                            'QST_admin_label'   => __('State/Province - System Question', 'event_espresso'),
-                            'QST_system'        => 'state',
-                            'QST_type'          => 'STATE',
-                            'QST_required'      => 0,
-                            'QST_required_text' => __('This field is required', 'event_espresso'),
-                            'QST_order'         => 8,
-                            'QST_admin_only'    => 0,
-                            'QST_wp_user'       => self::get_default_creator_id(),
-                            'QST_deleted'       => 0,
-                        );
-                        break;
-                    case 'zip':
-                        $QST_values = array(
-                            'QST_display_text'  => __('Zip/Postal Code', 'event_espresso'),
-                            'QST_admin_label'   => __('Zip/Postal Code - System Question', 'event_espresso'),
-                            'QST_system'        => 'zip',
-                            'QST_type'          => 'TEXT',
-                            'QST_required'      => 0,
-                            'QST_required_text' => __('This field is required', 'event_espresso'),
-                            'QST_order'         => 9,
-                            'QST_admin_only'    => 0,
-                            'QST_max'           => EEM_Question::instance()->absolute_max_for_system_question($QST_system),
-                            'QST_wp_user'       => self::get_default_creator_id(),
-                            'QST_deleted'       => 0,
-                        );
-                        break;
-                    case 'phone':
-                        $QST_values = array(
-                            'QST_display_text'  => __('Phone Number', 'event_espresso'),
-                            'QST_admin_label'   => __('Phone Number - System Question', 'event_espresso'),
-                            'QST_system'        => 'phone',
-                            'QST_type'          => 'TEXT',
-                            'QST_required'      => 0,
-                            'QST_required_text' => __('This field is required', 'event_espresso'),
-                            'QST_order'         => 10,
-                            'QST_admin_only'    => 0,
-                            'QST_max'           => EEM_Question::instance()->absolute_max_for_system_question($QST_system),
-                            'QST_wp_user'       => self::get_default_creator_id(),
-                            'QST_deleted'       => 0,
-                        );
-                        break;
-                }
-                if (! empty($QST_values)) {
-                    // insert system question
-                    $wpdb->insert(
-                        $table_name,
-                        $QST_values,
-                        array('%s', '%s', '%s', '%s', '%d', '%s', '%d', '%d', '%d', '%d')
-                    );
-                    $QST_ID = $wpdb->insert_id;
-                    // QUESTION GROUP QUESTIONS
-                    if (in_array($QST_system, array('fname', 'lname', 'email'))) {
-                        $system_question_we_want = EEM_Question_Group::system_personal;
-                    } else {
-                        $system_question_we_want = EEM_Question_Group::system_address;
-                    }
-                    if (isset($QSG_IDs[$system_question_we_want])) {
-                        $QSG_ID = $QSG_IDs[$system_question_we_want];
-                    } else {
-                        $id_col = EEM_Question_Group::instance()
-                                                    ->get_col(array(array('QSG_system' => $system_question_we_want)));
-                        if (is_array($id_col)) {
-                            $QSG_ID = reset($id_col);
-                        } else {
-                            //ok so we didn't find it in the db either?? that's weird because we should have inserted it at the start of this method
-                            EE_Log::instance()->log(
-                                __FILE__,
-                                __FUNCTION__,
-                                sprintf(
-                                    __(
-                                        'Could not associate question %1$s to a question group because no system question
+					'event_espresso'
+				),
+				__FILE__,
+				__FUNCTION__,
+				__LINE__
+			);
+			return false;
+		}
+		return true;
+	}
+
+
+
+	/**
+	 * initialize_system_questions
+	 *
+	 * @access public
+	 * @static
+	 * @return void
+	 */
+	public static function initialize_system_questions()
+	{
+		// QUESTION GROUPS
+		global $wpdb;
+		$table_name = \EEH_Activation::getTableAnalysis()->ensureTableNameHasPrefix('esp_question_group');
+		$SQL = "SELECT QSG_system FROM $table_name WHERE QSG_system != 0";
+		// what we have
+		$question_groups = $wpdb->get_col($SQL);
+		// check the response
+		$question_groups = is_array($question_groups) ? $question_groups : array();
+		// what we should have
+		$QSG_systems = array(1, 2);
+		// loop thru what we should have and compare to what we have
+		foreach ($QSG_systems as $QSG_system) {
+			// reset values array
+			$QSG_values = array();
+			// if we don't have what we should have (but use $QST_system as as string because that's what we got from the db)
+			if (! in_array("$QSG_system", $question_groups)) {
+				// add it
+				switch ($QSG_system) {
+					case 1:
+						$QSG_values = array(
+							'QSG_name'            => __('Personal Information', 'event_espresso'),
+							'QSG_identifier'      => 'personal-information-' . time(),
+							'QSG_desc'            => '',
+							'QSG_order'           => 1,
+							'QSG_show_group_name' => 1,
+							'QSG_show_group_desc' => 1,
+							'QSG_system'          => EEM_Question_Group::system_personal,
+							'QSG_deleted'         => 0,
+						);
+						break;
+					case 2:
+						$QSG_values = array(
+							'QSG_name'            => __('Address Information', 'event_espresso'),
+							'QSG_identifier'      => 'address-information-' . time(),
+							'QSG_desc'            => '',
+							'QSG_order'           => 2,
+							'QSG_show_group_name' => 1,
+							'QSG_show_group_desc' => 1,
+							'QSG_system'          => EEM_Question_Group::system_address,
+							'QSG_deleted'         => 0,
+						);
+						break;
+				}
+				// make sure we have some values before inserting them
+				if (! empty($QSG_values)) {
+					// insert system question
+					$wpdb->insert(
+						$table_name,
+						$QSG_values,
+						array('%s', '%s', '%s', '%d', '%d', '%d', '%d', '%d')
+					);
+					$QSG_IDs[$QSG_system] = $wpdb->insert_id;
+				}
+			}
+		}
+		// QUESTIONS
+		global $wpdb;
+		$table_name = \EEH_Activation::getTableAnalysis()->ensureTableNameHasPrefix('esp_question');
+		$SQL = "SELECT QST_system FROM $table_name WHERE QST_system != ''";
+		// what we have
+		$questions = $wpdb->get_col($SQL);
+		// what we should have
+		$QST_systems = array(
+			'fname',
+			'lname',
+			'email',
+			'address',
+			'address2',
+			'city',
+			'country',
+			'state',
+			'zip',
+			'phone',
+		);
+		$order_for_group_1 = 1;
+		$order_for_group_2 = 1;
+		// loop thru what we should have and compare to what we have
+		foreach ($QST_systems as $QST_system) {
+			// reset values array
+			$QST_values = array();
+			// if we don't have what we should have
+			if (! in_array($QST_system, $questions)) {
+				// add it
+				switch ($QST_system) {
+					case 'fname':
+						$QST_values = array(
+							'QST_display_text'  => __('First Name', 'event_espresso'),
+							'QST_admin_label'   => __('First Name - System Question', 'event_espresso'),
+							'QST_system'        => 'fname',
+							'QST_type'          => 'TEXT',
+							'QST_required'      => 1,
+							'QST_required_text' => __('This field is required', 'event_espresso'),
+							'QST_order'         => 1,
+							'QST_admin_only'    => 0,
+							'QST_max'           => EEM_Question::instance()->absolute_max_for_system_question($QST_system),
+							'QST_wp_user'       => self::get_default_creator_id(),
+							'QST_deleted'       => 0,
+						);
+						break;
+					case 'lname':
+						$QST_values = array(
+							'QST_display_text'  => __('Last Name', 'event_espresso'),
+							'QST_admin_label'   => __('Last Name - System Question', 'event_espresso'),
+							'QST_system'        => 'lname',
+							'QST_type'          => 'TEXT',
+							'QST_required'      => 1,
+							'QST_required_text' => __('This field is required', 'event_espresso'),
+							'QST_order'         => 2,
+							'QST_admin_only'    => 0,
+							'QST_max'           => EEM_Question::instance()->absolute_max_for_system_question($QST_system),
+							'QST_wp_user'       => self::get_default_creator_id(),
+							'QST_deleted'       => 0,
+						);
+						break;
+					case 'email':
+						$QST_values = array(
+							'QST_display_text'  => __('Email Address', 'event_espresso'),
+							'QST_admin_label'   => __('Email Address - System Question', 'event_espresso'),
+							'QST_system'        => 'email',
+							'QST_type'          => 'EMAIL',
+							'QST_required'      => 1,
+							'QST_required_text' => __('This field is required', 'event_espresso'),
+							'QST_order'         => 3,
+							'QST_admin_only'    => 0,
+							'QST_max'           => EEM_Question::instance()->absolute_max_for_system_question($QST_system),
+							'QST_wp_user'       => self::get_default_creator_id(),
+							'QST_deleted'       => 0,
+						);
+						break;
+					case 'address':
+						$QST_values = array(
+							'QST_display_text'  => __('Address', 'event_espresso'),
+							'QST_admin_label'   => __('Address - System Question', 'event_espresso'),
+							'QST_system'        => 'address',
+							'QST_type'          => 'TEXT',
+							'QST_required'      => 0,
+							'QST_required_text' => __('This field is required', 'event_espresso'),
+							'QST_order'         => 4,
+							'QST_admin_only'    => 0,
+							'QST_max'           => EEM_Question::instance()->absolute_max_for_system_question($QST_system),
+							'QST_wp_user'       => self::get_default_creator_id(),
+							'QST_deleted'       => 0,
+						);
+						break;
+					case 'address2':
+						$QST_values = array(
+							'QST_display_text'  => __('Address2', 'event_espresso'),
+							'QST_admin_label'   => __('Address2 - System Question', 'event_espresso'),
+							'QST_system'        => 'address2',
+							'QST_type'          => 'TEXT',
+							'QST_required'      => 0,
+							'QST_required_text' => __('This field is required', 'event_espresso'),
+							'QST_order'         => 5,
+							'QST_admin_only'    => 0,
+							'QST_max'           => EEM_Question::instance()->absolute_max_for_system_question($QST_system),
+							'QST_wp_user'       => self::get_default_creator_id(),
+							'QST_deleted'       => 0,
+						);
+						break;
+					case 'city':
+						$QST_values = array(
+							'QST_display_text'  => __('City', 'event_espresso'),
+							'QST_admin_label'   => __('City - System Question', 'event_espresso'),
+							'QST_system'        => 'city',
+							'QST_type'          => 'TEXT',
+							'QST_required'      => 0,
+							'QST_required_text' => __('This field is required', 'event_espresso'),
+							'QST_order'         => 6,
+							'QST_admin_only'    => 0,
+							'QST_max'           => EEM_Question::instance()->absolute_max_for_system_question($QST_system),
+							'QST_wp_user'       => self::get_default_creator_id(),
+							'QST_deleted'       => 0,
+						);
+						break;
+					case 'country':
+						$QST_values = array(
+							'QST_display_text'  => __('Country', 'event_espresso'),
+							'QST_admin_label'   => __('Country - System Question', 'event_espresso'),
+							'QST_system'        => 'country',
+							'QST_type'          => 'COUNTRY',
+							'QST_required'      => 0,
+							'QST_required_text' => __('This field is required', 'event_espresso'),
+							'QST_order'         => 7,
+							'QST_admin_only'    => 0,
+							'QST_wp_user'       => self::get_default_creator_id(),
+							'QST_deleted'       => 0,
+						);
+						break;
+					case 'state':
+						$QST_values = array(
+							'QST_display_text'  => __('State/Province', 'event_espresso'),
+							'QST_admin_label'   => __('State/Province - System Question', 'event_espresso'),
+							'QST_system'        => 'state',
+							'QST_type'          => 'STATE',
+							'QST_required'      => 0,
+							'QST_required_text' => __('This field is required', 'event_espresso'),
+							'QST_order'         => 8,
+							'QST_admin_only'    => 0,
+							'QST_wp_user'       => self::get_default_creator_id(),
+							'QST_deleted'       => 0,
+						);
+						break;
+					case 'zip':
+						$QST_values = array(
+							'QST_display_text'  => __('Zip/Postal Code', 'event_espresso'),
+							'QST_admin_label'   => __('Zip/Postal Code - System Question', 'event_espresso'),
+							'QST_system'        => 'zip',
+							'QST_type'          => 'TEXT',
+							'QST_required'      => 0,
+							'QST_required_text' => __('This field is required', 'event_espresso'),
+							'QST_order'         => 9,
+							'QST_admin_only'    => 0,
+							'QST_max'           => EEM_Question::instance()->absolute_max_for_system_question($QST_system),
+							'QST_wp_user'       => self::get_default_creator_id(),
+							'QST_deleted'       => 0,
+						);
+						break;
+					case 'phone':
+						$QST_values = array(
+							'QST_display_text'  => __('Phone Number', 'event_espresso'),
+							'QST_admin_label'   => __('Phone Number - System Question', 'event_espresso'),
+							'QST_system'        => 'phone',
+							'QST_type'          => 'TEXT',
+							'QST_required'      => 0,
+							'QST_required_text' => __('This field is required', 'event_espresso'),
+							'QST_order'         => 10,
+							'QST_admin_only'    => 0,
+							'QST_max'           => EEM_Question::instance()->absolute_max_for_system_question($QST_system),
+							'QST_wp_user'       => self::get_default_creator_id(),
+							'QST_deleted'       => 0,
+						);
+						break;
+				}
+				if (! empty($QST_values)) {
+					// insert system question
+					$wpdb->insert(
+						$table_name,
+						$QST_values,
+						array('%s', '%s', '%s', '%s', '%d', '%s', '%d', '%d', '%d', '%d')
+					);
+					$QST_ID = $wpdb->insert_id;
+					// QUESTION GROUP QUESTIONS
+					if (in_array($QST_system, array('fname', 'lname', 'email'))) {
+						$system_question_we_want = EEM_Question_Group::system_personal;
+					} else {
+						$system_question_we_want = EEM_Question_Group::system_address;
+					}
+					if (isset($QSG_IDs[$system_question_we_want])) {
+						$QSG_ID = $QSG_IDs[$system_question_we_want];
+					} else {
+						$id_col = EEM_Question_Group::instance()
+													->get_col(array(array('QSG_system' => $system_question_we_want)));
+						if (is_array($id_col)) {
+							$QSG_ID = reset($id_col);
+						} else {
+							//ok so we didn't find it in the db either?? that's weird because we should have inserted it at the start of this method
+							EE_Log::instance()->log(
+								__FILE__,
+								__FUNCTION__,
+								sprintf(
+									__(
+										'Could not associate question %1$s to a question group because no system question
                                          group existed',
-                                        'event_espresso'
-                                    ),
-                                    $QST_ID),
-                                'error');
-                            continue;
-                        }
-                    }
-                    // add system questions to groups
-                    $wpdb->insert(
-                        \EEH_Activation::getTableAnalysis()->ensureTableNameHasPrefix('esp_question_group_question'),
-                        array(
-                            'QSG_ID'    => $QSG_ID,
-                            'QST_ID'    => $QST_ID,
-                            'QGQ_order' => ($QSG_ID === 1) ? $order_for_group_1++ : $order_for_group_2++,
-                        ),
-                        array('%d', '%d', '%d')
-                    );
-                }
-            }
-        }
-    }
-
-
-    /**
-     * Makes sure the default payment method (Invoice) is active.
-     * This used to be done automatically as part of constructing the old gateways config
-     *
-     * @throws \EE_Error
-     */
-    public static function insert_default_payment_methods()
-    {
-        if (! EEM_Payment_Method::instance()->count_active(EEM_Payment_Method::scope_cart)) {
-            EE_Registry::instance()->load_lib('Payment_Method_Manager');
-            EE_Payment_Method_Manager::instance()->activate_a_payment_method_of_type('Invoice');
-        } else {
-            EEM_Payment_Method::instance()->verify_button_urls();
-        }
-    }
-
-    /**
-     * insert_default_status_codes
-     *
-     * @access public
-     * @static
-     * @return void
-     */
-    public static function insert_default_status_codes()
-    {
-
-        global $wpdb;
-
-        if (\EEH_Activation::getTableAnalysis()->tableExists(EEM_Status::instance()->table())) {
-
-            $table_name = EEM_Status::instance()->table();
-
-            $SQL = "DELETE FROM $table_name WHERE STS_ID IN ( 'ACT', 'NAC', 'NOP', 'OPN', 'CLS', 'PND', 'ONG', 'SEC', 'DRF', 'DEL', 'DEN', 'EXP', 'RPP', 'RCN', 'RDC', 'RAP', 'RNA', 'RWL', 'TAB', 'TIN', 'TFL', 'TCM', 'TOP', 'PAP', 'PCN', 'PFL', 'PDC', 'EDR', 'ESN', 'PPN', 'RIC', 'MSN', 'MFL', 'MID', 'MRS', 'MIC', 'MDO', 'MEX' );";
-            $wpdb->query($SQL);
-
-            $SQL = "INSERT INTO $table_name
+										'event_espresso'
+									),
+									$QST_ID),
+								'error');
+							continue;
+						}
+					}
+					// add system questions to groups
+					$wpdb->insert(
+						\EEH_Activation::getTableAnalysis()->ensureTableNameHasPrefix('esp_question_group_question'),
+						array(
+							'QSG_ID'    => $QSG_ID,
+							'QST_ID'    => $QST_ID,
+							'QGQ_order' => ($QSG_ID === 1) ? $order_for_group_1++ : $order_for_group_2++,
+						),
+						array('%d', '%d', '%d')
+					);
+				}
+			}
+		}
+	}
+
+
+	/**
+	 * Makes sure the default payment method (Invoice) is active.
+	 * This used to be done automatically as part of constructing the old gateways config
+	 *
+	 * @throws \EE_Error
+	 */
+	public static function insert_default_payment_methods()
+	{
+		if (! EEM_Payment_Method::instance()->count_active(EEM_Payment_Method::scope_cart)) {
+			EE_Registry::instance()->load_lib('Payment_Method_Manager');
+			EE_Payment_Method_Manager::instance()->activate_a_payment_method_of_type('Invoice');
+		} else {
+			EEM_Payment_Method::instance()->verify_button_urls();
+		}
+	}
+
+	/**
+	 * insert_default_status_codes
+	 *
+	 * @access public
+	 * @static
+	 * @return void
+	 */
+	public static function insert_default_status_codes()
+	{
+
+		global $wpdb;
+
+		if (\EEH_Activation::getTableAnalysis()->tableExists(EEM_Status::instance()->table())) {
+
+			$table_name = EEM_Status::instance()->table();
+
+			$SQL = "DELETE FROM $table_name WHERE STS_ID IN ( 'ACT', 'NAC', 'NOP', 'OPN', 'CLS', 'PND', 'ONG', 'SEC', 'DRF', 'DEL', 'DEN', 'EXP', 'RPP', 'RCN', 'RDC', 'RAP', 'RNA', 'RWL', 'TAB', 'TIN', 'TFL', 'TCM', 'TOP', 'PAP', 'PCN', 'PFL', 'PDC', 'EDR', 'ESN', 'PPN', 'RIC', 'MSN', 'MFL', 'MID', 'MRS', 'MIC', 'MDO', 'MEX' );";
+			$wpdb->query($SQL);
+
+			$SQL = "INSERT INTO $table_name
 					(STS_ID, STS_code, STS_type, STS_can_edit, STS_desc, STS_open) VALUES
 					('ACT', 'ACTIVE', 'event', 0, NULL, 1),
 					('NAC', 'NOT_ACTIVE', 'event', 0, NULL, 0),
@@ -1205,462 +1205,462 @@ 
 					('MID', 'IDLE', 'message', 0, NULL, 1),
 					('MRS', 'RESEND', 'message', 0, NULL, 1),
 					('MIC', 'INCOMPLETE', 'message', 0, NULL, 0);";
-            $wpdb->query($SQL);
-
-        }
-
-    }
-
-
-    /**
-     * generate_default_message_templates
-     *
-     * @static
-     * @throws EE_Error
-     * @return bool     true means new templates were created.
-     *                  false means no templates were created.
-     *                  This is NOT an error flag. To check for errors you will want
-     *                  to use either EE_Error or a try catch for an EE_Error exception.
-     */
-    public static function generate_default_message_templates()
-    {
-        /** @type EE_Message_Resource_Manager $message_resource_manager */
-        $message_resource_manager = EE_Registry::instance()->load_lib('Message_Resource_Manager');
-        /*
+			$wpdb->query($SQL);
+
+		}
+
+	}
+
+
+	/**
+	 * generate_default_message_templates
+	 *
+	 * @static
+	 * @throws EE_Error
+	 * @return bool     true means new templates were created.
+	 *                  false means no templates were created.
+	 *                  This is NOT an error flag. To check for errors you will want
+	 *                  to use either EE_Error or a try catch for an EE_Error exception.
+	 */
+	public static function generate_default_message_templates()
+	{
+		/** @type EE_Message_Resource_Manager $message_resource_manager */
+		$message_resource_manager = EE_Registry::instance()->load_lib('Message_Resource_Manager');
+		/*
          * This first method is taking care of ensuring any default messengers
          * that should be made active and have templates generated are done.
          */
-        $new_templates_created_for_messenger = self::_activate_and_generate_default_messengers_and_message_templates(
-            $message_resource_manager
-        );
-        /**
-         * This method is verifying there are no NEW default message types
-         * for ACTIVE messengers that need activated (and corresponding templates setup).
-         */
-        $new_templates_created_for_message_type = self::_activate_new_message_types_for_active_messengers_and_generate_default_templates(
-            $message_resource_manager
-        );
-        //after all is done, let's persist these changes to the db.
-        $message_resource_manager->update_has_activated_messengers_option();
-        $message_resource_manager->update_active_messengers_option();
-        // will return true if either of these are true.  Otherwise will return false.
-        return $new_templates_created_for_message_type || $new_templates_created_for_messenger;
-    }
-
-
-
-    /**
-     * @param \EE_Message_Resource_Manager $message_resource_manager
-     * @return array|bool
-     * @throws \EE_Error
-     */
-    protected static function _activate_new_message_types_for_active_messengers_and_generate_default_templates(
-        EE_Message_Resource_Manager $message_resource_manager
-    ) {
-        /** @type EE_messenger[] $active_messengers */
-        $active_messengers = $message_resource_manager->active_messengers();
-        $installed_message_types = $message_resource_manager->installed_message_types();
-        $templates_created = false;
-        foreach ($active_messengers as $active_messenger) {
-            $default_message_type_names_for_messenger = $active_messenger->get_default_message_types();
-            $default_message_type_names_to_activate = array();
-            // looping through each default message type reported by the messenger
-            // and setup the actual message types to activate.
-            foreach ($default_message_type_names_for_messenger as $default_message_type_name_for_messenger) {
-                // if already active or has already been activated before we skip
-                // (otherwise we might reactivate something user's intentionally deactivated.)
-                // we also skip if the message type is not installed.
-                if (
-                    $message_resource_manager->has_message_type_been_activated_for_messenger(
-                        $default_message_type_name_for_messenger,
-                        $active_messenger->name
-                    )
-                    || $message_resource_manager->is_message_type_active_for_messenger(
-                        $active_messenger->name,
-                        $default_message_type_name_for_messenger
-                    )
-                    || ! isset($installed_message_types[$default_message_type_name_for_messenger])
-                ) {
-                    continue;
-                }
-                $default_message_type_names_to_activate[] = $default_message_type_name_for_messenger;
-            }
-            //let's activate!
-            $message_resource_manager->ensure_message_types_are_active(
-                $default_message_type_names_to_activate,
-                $active_messenger->name,
-                false
-            );
-            //activate the templates for these message types
-            if ( ! empty($default_message_type_names_to_activate)) {
-                $templates_created = EEH_MSG_Template::generate_new_templates(
-                    $active_messenger->name,
-                    $default_message_type_names_for_messenger,
-                    '',
-                    true
-                );
-            }
-        }
-        return $templates_created;
-    }
-
-
-
-    /**
-     * This will activate and generate default messengers and default message types for those messengers.
-     *
-     * @param EE_message_Resource_Manager $message_resource_manager
-     * @return array|bool  True means there were default messengers and message type templates generated.
-     *                     False means that there were no templates generated
-     *                     (which could simply mean there are no default message types for a messenger).
-     * @throws EE_Error
-     */
-    protected static function _activate_and_generate_default_messengers_and_message_templates(
-        EE_Message_Resource_Manager $message_resource_manager
-    ) {
-        /** @type EE_messenger[] $messengers_to_generate */
-        $messengers_to_generate = self::_get_default_messengers_to_generate_on_activation($message_resource_manager);
-        $installed_message_types = $message_resource_manager->installed_message_types();
-        $templates_generated = false;
-        foreach ($messengers_to_generate as $messenger_to_generate) {
-            $default_message_type_names_for_messenger = $messenger_to_generate->get_default_message_types();
-            //verify the default message types match an installed message type.
-            foreach ($default_message_type_names_for_messenger as $key => $name) {
-                if (
-                    ! isset($installed_message_types[$name])
-                    || $message_resource_manager->has_message_type_been_activated_for_messenger(
-                        $name,
-                        $messenger_to_generate->name
-                    )
-                ) {
-                    unset($default_message_type_names_for_messenger[$key]);
-                }
-            }
-            // in previous iterations, the active_messengers option in the db
-            // needed updated before calling create templates. however with the changes this may not be necessary.
-            // This comment is left here just in case we discover that we _do_ need to update before
-            // passing off to create templates (after the refactor is done).
-            // @todo remove this comment when determined not necessary.
-            $message_resource_manager->activate_messenger(
-                $messenger_to_generate->name,
-                $default_message_type_names_for_messenger,
-                false
-            );
-            //create any templates needing created (or will reactivate templates already generated as necessary).
-            if ( ! empty($default_message_type_names_for_messenger)) {
-                $templates_generated = EEH_MSG_Template::generate_new_templates(
-                    $messenger_to_generate->name,
-                    $default_message_type_names_for_messenger,
-                    '',
-                    true
-                );
-            }
-        }
-        return $templates_generated;
-    }
-
-
-    /**
-     * This returns the default messengers to generate templates for on activation of EE.
-     * It considers:
-     * - whether a messenger is already active in the db.
-     * - whether a messenger has been made active at any time in the past.
-     *
-     * @static
-     * @param  EE_Message_Resource_Manager $message_resource_manager
-     * @return EE_messenger[]
-     */
-    protected static function _get_default_messengers_to_generate_on_activation(
-        EE_Message_Resource_Manager $message_resource_manager
-    ) {
-        $active_messengers    = $message_resource_manager->active_messengers();
-        $installed_messengers = $message_resource_manager->installed_messengers();
-        $has_activated        = $message_resource_manager->get_has_activated_messengers_option();
-
-        $messengers_to_generate = array();
-        foreach ($installed_messengers as $installed_messenger) {
-            //if installed messenger is a messenger that should be activated on install
-            //and is not already active
-            //and has never been activated
-            if (
-                ! $installed_messenger->activate_on_install
-                || isset($active_messengers[$installed_messenger->name])
-                || isset($has_activated[$installed_messenger->name])
-            ) {
-                continue;
-            }
-            $messengers_to_generate[$installed_messenger->name] = $installed_messenger;
-        }
-        return $messengers_to_generate;
-    }
-
-
-    /**
-     * This simply validates active message types to ensure they actually match installed
-     * message types.  If there's a mismatch then we deactivate the message type and ensure all related db
-     * rows are set inactive.
-     * Note: Messengers are no longer validated here as of 4.9.0 because they get validated automatically whenever
-     * EE_Messenger_Resource_Manager is constructed.  Message Types are a bit more resource heavy for validation so they
-     * are still handled in here.
-     *
-     * @since 4.3.1
-     * @return void
-     */
-    public static function validate_messages_system()
-    {
-        /** @type EE_Message_Resource_Manager $message_resource_manager */
-        $message_resource_manager = EE_Registry::instance()->load_lib('Message_Resource_Manager');
-        $message_resource_manager->validate_active_message_types_are_installed();
-        do_action('AHEE__EEH_Activation__validate_messages_system');
-    }
-
-
-    /**
-     * create_no_ticket_prices_array
-     *
-     * @access public
-     * @static
-     * @return void
-     */
-    public static function create_no_ticket_prices_array()
-    {
-        // this creates an array for tracking events that have no active ticket prices created
-        // this allows us to warn admins of the situation so that it can be corrected
-        $espresso_no_ticket_prices = get_option('ee_no_ticket_prices', false);
-        if (! $espresso_no_ticket_prices) {
-            add_option('ee_no_ticket_prices', array(), '', false);
-        }
-    }
-
-
-    /**
-     * plugin_deactivation
-     *
-     * @access public
-     * @static
-     * @return void
-     */
-    public static function plugin_deactivation()
-    {
-    }
-
-
-    /**
-     * Finds all our EE4 custom post types, and deletes them and their associated data
-     * (like post meta or term relations)
-     *
-     * @global wpdb $wpdb
-     * @throws \EE_Error
-     */
-    public static function delete_all_espresso_cpt_data()
-    {
-        global $wpdb;
-        //get all the CPT post_types
-        $ee_post_types = array();
-        foreach (EE_Registry::instance()->non_abstract_db_models as $model_name) {
-            if (method_exists($model_name, 'instance')) {
-                $model_obj = call_user_func(array($model_name, 'instance'));
-                if ($model_obj instanceof EEM_CPT_Base) {
-                    $ee_post_types[] = $wpdb->prepare("%s", $model_obj->post_type());
-                }
-            }
-        }
-        //get all our CPTs
-        $query   = "SELECT ID FROM {$wpdb->posts} WHERE post_type IN (" . implode(",", $ee_post_types) . ")";
-        $cpt_ids = $wpdb->get_col($query);
-        //delete each post meta and term relations too
-        foreach ($cpt_ids as $post_id) {
-            wp_delete_post($post_id, true);
-        }
-    }
-
-    /**
-     * Deletes all EE custom tables
-     *
-     * @return array
-     */
-    public static function drop_espresso_tables()
-    {
-        $tables = array();
-        // load registry
-        foreach (EE_Registry::instance()->non_abstract_db_models as $model_name) {
-            if (method_exists($model_name, 'instance')) {
-                $model_obj = call_user_func(array($model_name, 'instance'));
-                if ($model_obj instanceof EEM_Base) {
-                    foreach ($model_obj->get_tables() as $table) {
-                        if (strpos($table->get_table_name(), 'esp_')
-                            &&
-                            (
-                                is_main_site()//main site? nuke them all
-                                || ! $table->is_global()//not main site,but not global either. nuke it
-                            )
-                        ) {
-                            $tables[$table->get_table_name()] = $table->get_table_name();
-                        }
-                    }
-                }
-            }
-        }
-
-        //there are some tables whose models were removed.
-        //they should be removed when removing all EE core's data
-        $tables_without_models = array(
-            'esp_promotion',
-            'esp_promotion_applied',
-            'esp_promotion_object',
-            'esp_promotion_rule',
-            'esp_rule',
-        );
-        foreach ($tables_without_models as $table) {
-            $tables[$table] = $table;
-        }
-        return \EEH_Activation::getTableManager()->dropTables($tables);
-    }
-
-
-
-    /**
-     * Drops all the tables mentioned in a single MYSQL query. Double-checks
-     * each table name provided has a wpdb prefix attached, and that it exists.
-     * Returns the list actually deleted
-     *
-     * @deprecated in 4.9.13. Instead use TableManager::dropTables()
-     * @global WPDB $wpdb
-     * @param array $table_names
-     * @return array of table names which we deleted
-     */
-    public static function drop_tables($table_names)
-    {
-        return \EEH_Activation::getTableManager()->dropTables($table_names);
-    }
-
-
-
-    /**
-     * plugin_uninstall
-     *
-     * @access public
-     * @static
-     * @param bool $remove_all
-     * @return void
-     */
-    public static function delete_all_espresso_tables_and_data($remove_all = true)
-    {
-        global $wpdb;
-        self::drop_espresso_tables();
-        $wp_options_to_delete = array(
-            'ee_no_ticket_prices'                => true,
-            'ee_active_messengers'               => true,
-            'ee_has_activated_messenger'         => true,
-            'ee_flush_rewrite_rules'             => true,
-            'ee_config'                          => false,
-            'ee_data_migration_current_db_state' => true,
-            'ee_data_migration_mapping_'         => false,
-            'ee_data_migration_script_'          => false,
-            'ee_data_migrations'                 => true,
-            'ee_dms_map'                         => false,
-            'ee_notices'                         => true,
-            'lang_file_check_'                   => false,
-            'ee_maintenance_mode'                => true,
-            'ee_ueip_optin'                      => true,
-            'ee_ueip_has_notified'               => true,
-            'ee_plugin_activation_errors'        => true,
-            'ee_id_mapping_from'                 => false,
-            'espresso_persistent_admin_notices'  => true,
-            'ee_encryption_key'                  => true,
-            'pue_force_upgrade_'                 => false,
-            'pue_json_error_'                    => false,
-            'pue_install_key_'                   => false,
-            'pue_verification_error_'            => false,
-            'pu_dismissed_upgrade_'              => false,
-            'external_updates-'                  => false,
-            'ee_extra_data'                      => true,
-            'ee_ssn_'                            => false,
-            'ee_rss_'                            => false,
-            'ee_rte_n_tx_'                       => false,
-            'ee_pers_admin_notices'              => true,
-            'ee_job_parameters_'                 => false,
-            'ee_upload_directories_incomplete'   => true,
-            'ee_verified_db_collations'          => true,
-        );
-        if (is_main_site()) {
-            $wp_options_to_delete['ee_network_config'] = true;
-        }
-        $undeleted_options = array();
-        foreach ($wp_options_to_delete as $option_name => $no_wildcard) {
-            if ($no_wildcard) {
-                if ( ! delete_option($option_name)) {
-                    $undeleted_options[] = $option_name;
-                }
-            } else {
-                $option_names_to_delete_from_wildcard = $wpdb->get_col("SELECT option_name FROM $wpdb->options WHERE option_name LIKE '%$option_name%'");
-                foreach ($option_names_to_delete_from_wildcard as $option_name_from_wildcard) {
-                    if ( ! delete_option($option_name_from_wildcard)) {
-                        $undeleted_options[] = $option_name_from_wildcard;
-                    }
-                }
-            }
-        }
-        //also, let's make sure the "ee_config_option_names" wp option stays out by removing the action that adds it
-        remove_action('shutdown', array(EE_Config::instance(), 'shutdown'), 10);
-        if ($remove_all && $espresso_db_update = get_option('espresso_db_update')) {
-            $db_update_sans_ee4 = array();
-            foreach ($espresso_db_update as $version => $times_activated) {
-                if ((string)$version[0] === '3') {//if its NON EE4
-                    $db_update_sans_ee4[$version] = $times_activated;
-                }
-            }
-            update_option('espresso_db_update', $db_update_sans_ee4);
-        }
-        $errors = '';
-        if ( ! empty($undeleted_options)) {
-            $errors .= sprintf(
-                __('The following wp-options could not be deleted: %s%s', 'event_espresso'),
-                '<br/>',
-                implode(',<br/>', $undeleted_options)
-            );
-        }
-        if ( ! empty($errors)) {
-            EE_Error::add_attention($errors, __FILE__, __FUNCTION__, __LINE__);
-        }
-    }
-
-    /**
-     * Gets the mysql error code from the last used query by wpdb
-     *
-     * @return int mysql error code, see https://dev.mysql.com/doc/refman/5.5/en/error-messages-server.html
-     */
-    public static function last_wpdb_error_code()
-    {
-        global $wpdb;
-        if ($wpdb->use_mysqli) {
-            return mysqli_errno($wpdb->dbh);
-        } else {
-            return mysql_errno($wpdb->dbh);
-        }
-    }
-
-    /**
-     * Checks that the database table exists. Also works on temporary tables (for unit tests mostly).
-     *
-     * @global wpdb  $wpdb
-     * @deprecated instead use TableAnalysis::tableExists()
-     * @param string $table_name with or without $wpdb->prefix
-     * @return boolean
-     */
-    public static function table_exists($table_name)
-    {
-        return \EEH_Activation::getTableAnalysis()->tableExists($table_name);
-    }
-
-    /**
-     * Resets the cache on EEH_Activation
-     */
-    public static function reset()
-    {
-        self::$_default_creator_id                             = null;
-        self::$_initialized_db_content_already_in_this_request = false;
-    }
+		$new_templates_created_for_messenger = self::_activate_and_generate_default_messengers_and_message_templates(
+			$message_resource_manager
+		);
+		/**
+		 * This method is verifying there are no NEW default message types
+		 * for ACTIVE messengers that need activated (and corresponding templates setup).
+		 */
+		$new_templates_created_for_message_type = self::_activate_new_message_types_for_active_messengers_and_generate_default_templates(
+			$message_resource_manager
+		);
+		//after all is done, let's persist these changes to the db.
+		$message_resource_manager->update_has_activated_messengers_option();
+		$message_resource_manager->update_active_messengers_option();
+		// will return true if either of these are true.  Otherwise will return false.
+		return $new_templates_created_for_message_type || $new_templates_created_for_messenger;
+	}
+
+
+
+	/**
+	 * @param \EE_Message_Resource_Manager $message_resource_manager
+	 * @return array|bool
+	 * @throws \EE_Error
+	 */
+	protected static function _activate_new_message_types_for_active_messengers_and_generate_default_templates(
+		EE_Message_Resource_Manager $message_resource_manager
+	) {
+		/** @type EE_messenger[] $active_messengers */
+		$active_messengers = $message_resource_manager->active_messengers();
+		$installed_message_types = $message_resource_manager->installed_message_types();
+		$templates_created = false;
+		foreach ($active_messengers as $active_messenger) {
+			$default_message_type_names_for_messenger = $active_messenger->get_default_message_types();
+			$default_message_type_names_to_activate = array();
+			// looping through each default message type reported by the messenger
+			// and setup the actual message types to activate.
+			foreach ($default_message_type_names_for_messenger as $default_message_type_name_for_messenger) {
+				// if already active or has already been activated before we skip
+				// (otherwise we might reactivate something user's intentionally deactivated.)
+				// we also skip if the message type is not installed.
+				if (
+					$message_resource_manager->has_message_type_been_activated_for_messenger(
+						$default_message_type_name_for_messenger,
+						$active_messenger->name
+					)
+					|| $message_resource_manager->is_message_type_active_for_messenger(
+						$active_messenger->name,
+						$default_message_type_name_for_messenger
+					)
+					|| ! isset($installed_message_types[$default_message_type_name_for_messenger])
+				) {
+					continue;
+				}
+				$default_message_type_names_to_activate[] = $default_message_type_name_for_messenger;
+			}
+			//let's activate!
+			$message_resource_manager->ensure_message_types_are_active(
+				$default_message_type_names_to_activate,
+				$active_messenger->name,
+				false
+			);
+			//activate the templates for these message types
+			if ( ! empty($default_message_type_names_to_activate)) {
+				$templates_created = EEH_MSG_Template::generate_new_templates(
+					$active_messenger->name,
+					$default_message_type_names_for_messenger,
+					'',
+					true
+				);
+			}
+		}
+		return $templates_created;
+	}
+
+
+
+	/**
+	 * This will activate and generate default messengers and default message types for those messengers.
+	 *
+	 * @param EE_message_Resource_Manager $message_resource_manager
+	 * @return array|bool  True means there were default messengers and message type templates generated.
+	 *                     False means that there were no templates generated
+	 *                     (which could simply mean there are no default message types for a messenger).
+	 * @throws EE_Error
+	 */
+	protected static function _activate_and_generate_default_messengers_and_message_templates(
+		EE_Message_Resource_Manager $message_resource_manager
+	) {
+		/** @type EE_messenger[] $messengers_to_generate */
+		$messengers_to_generate = self::_get_default_messengers_to_generate_on_activation($message_resource_manager);
+		$installed_message_types = $message_resource_manager->installed_message_types();
+		$templates_generated = false;
+		foreach ($messengers_to_generate as $messenger_to_generate) {
+			$default_message_type_names_for_messenger = $messenger_to_generate->get_default_message_types();
+			//verify the default message types match an installed message type.
+			foreach ($default_message_type_names_for_messenger as $key => $name) {
+				if (
+					! isset($installed_message_types[$name])
+					|| $message_resource_manager->has_message_type_been_activated_for_messenger(
+						$name,
+						$messenger_to_generate->name
+					)
+				) {
+					unset($default_message_type_names_for_messenger[$key]);
+				}
+			}
+			// in previous iterations, the active_messengers option in the db
+			// needed updated before calling create templates. however with the changes this may not be necessary.
+			// This comment is left here just in case we discover that we _do_ need to update before
+			// passing off to create templates (after the refactor is done).
+			// @todo remove this comment when determined not necessary.
+			$message_resource_manager->activate_messenger(
+				$messenger_to_generate->name,
+				$default_message_type_names_for_messenger,
+				false
+			);
+			//create any templates needing created (or will reactivate templates already generated as necessary).
+			if ( ! empty($default_message_type_names_for_messenger)) {
+				$templates_generated = EEH_MSG_Template::generate_new_templates(
+					$messenger_to_generate->name,
+					$default_message_type_names_for_messenger,
+					'',
+					true
+				);
+			}
+		}
+		return $templates_generated;
+	}
+
+
+	/**
+	 * This returns the default messengers to generate templates for on activation of EE.
+	 * It considers:
+	 * - whether a messenger is already active in the db.
+	 * - whether a messenger has been made active at any time in the past.
+	 *
+	 * @static
+	 * @param  EE_Message_Resource_Manager $message_resource_manager
+	 * @return EE_messenger[]
+	 */
+	protected static function _get_default_messengers_to_generate_on_activation(
+		EE_Message_Resource_Manager $message_resource_manager
+	) {
+		$active_messengers    = $message_resource_manager->active_messengers();
+		$installed_messengers = $message_resource_manager->installed_messengers();
+		$has_activated        = $message_resource_manager->get_has_activated_messengers_option();
+
+		$messengers_to_generate = array();
+		foreach ($installed_messengers as $installed_messenger) {
+			//if installed messenger is a messenger that should be activated on install
+			//and is not already active
+			//and has never been activated
+			if (
+				! $installed_messenger->activate_on_install
+				|| isset($active_messengers[$installed_messenger->name])
+				|| isset($has_activated[$installed_messenger->name])
+			) {
+				continue;
+			}
+			$messengers_to_generate[$installed_messenger->name] = $installed_messenger;
+		}
+		return $messengers_to_generate;
+	}
+
+
+	/**
+	 * This simply validates active message types to ensure they actually match installed
+	 * message types.  If there's a mismatch then we deactivate the message type and ensure all related db
+	 * rows are set inactive.
+	 * Note: Messengers are no longer validated here as of 4.9.0 because they get validated automatically whenever
+	 * EE_Messenger_Resource_Manager is constructed.  Message Types are a bit more resource heavy for validation so they
+	 * are still handled in here.
+	 *
+	 * @since 4.3.1
+	 * @return void
+	 */
+	public static function validate_messages_system()
+	{
+		/** @type EE_Message_Resource_Manager $message_resource_manager */
+		$message_resource_manager = EE_Registry::instance()->load_lib('Message_Resource_Manager');
+		$message_resource_manager->validate_active_message_types_are_installed();
+		do_action('AHEE__EEH_Activation__validate_messages_system');
+	}
+
+
+	/**
+	 * create_no_ticket_prices_array
+	 *
+	 * @access public
+	 * @static
+	 * @return void
+	 */
+	public static function create_no_ticket_prices_array()
+	{
+		// this creates an array for tracking events that have no active ticket prices created
+		// this allows us to warn admins of the situation so that it can be corrected
+		$espresso_no_ticket_prices = get_option('ee_no_ticket_prices', false);
+		if (! $espresso_no_ticket_prices) {
+			add_option('ee_no_ticket_prices', array(), '', false);
+		}
+	}
+
+
+	/**
+	 * plugin_deactivation
+	 *
+	 * @access public
+	 * @static
+	 * @return void
+	 */
+	public static function plugin_deactivation()
+	{
+	}
+
+
+	/**
+	 * Finds all our EE4 custom post types, and deletes them and their associated data
+	 * (like post meta or term relations)
+	 *
+	 * @global wpdb $wpdb
+	 * @throws \EE_Error
+	 */
+	public static function delete_all_espresso_cpt_data()
+	{
+		global $wpdb;
+		//get all the CPT post_types
+		$ee_post_types = array();
+		foreach (EE_Registry::instance()->non_abstract_db_models as $model_name) {
+			if (method_exists($model_name, 'instance')) {
+				$model_obj = call_user_func(array($model_name, 'instance'));
+				if ($model_obj instanceof EEM_CPT_Base) {
+					$ee_post_types[] = $wpdb->prepare("%s", $model_obj->post_type());
+				}
+			}
+		}
+		//get all our CPTs
+		$query   = "SELECT ID FROM {$wpdb->posts} WHERE post_type IN (" . implode(",", $ee_post_types) . ")";
+		$cpt_ids = $wpdb->get_col($query);
+		//delete each post meta and term relations too
+		foreach ($cpt_ids as $post_id) {
+			wp_delete_post($post_id, true);
+		}
+	}
+
+	/**
+	 * Deletes all EE custom tables
+	 *
+	 * @return array
+	 */
+	public static function drop_espresso_tables()
+	{
+		$tables = array();
+		// load registry
+		foreach (EE_Registry::instance()->non_abstract_db_models as $model_name) {
+			if (method_exists($model_name, 'instance')) {
+				$model_obj = call_user_func(array($model_name, 'instance'));
+				if ($model_obj instanceof EEM_Base) {
+					foreach ($model_obj->get_tables() as $table) {
+						if (strpos($table->get_table_name(), 'esp_')
+							&&
+							(
+								is_main_site()//main site? nuke them all
+								|| ! $table->is_global()//not main site,but not global either. nuke it
+							)
+						) {
+							$tables[$table->get_table_name()] = $table->get_table_name();
+						}
+					}
+				}
+			}
+		}
+
+		//there are some tables whose models were removed.
+		//they should be removed when removing all EE core's data
+		$tables_without_models = array(
+			'esp_promotion',
+			'esp_promotion_applied',
+			'esp_promotion_object',
+			'esp_promotion_rule',
+			'esp_rule',
+		);
+		foreach ($tables_without_models as $table) {
+			$tables[$table] = $table;
+		}
+		return \EEH_Activation::getTableManager()->dropTables($tables);
+	}
+
+
+
+	/**
+	 * Drops all the tables mentioned in a single MYSQL query. Double-checks
+	 * each table name provided has a wpdb prefix attached, and that it exists.
+	 * Returns the list actually deleted
+	 *
+	 * @deprecated in 4.9.13. Instead use TableManager::dropTables()
+	 * @global WPDB $wpdb
+	 * @param array $table_names
+	 * @return array of table names which we deleted
+	 */
+	public static function drop_tables($table_names)
+	{
+		return \EEH_Activation::getTableManager()->dropTables($table_names);
+	}
+
+
+
+	/**
+	 * plugin_uninstall
+	 *
+	 * @access public
+	 * @static
+	 * @param bool $remove_all
+	 * @return void
+	 */
+	public static function delete_all_espresso_tables_and_data($remove_all = true)
+	{
+		global $wpdb;
+		self::drop_espresso_tables();
+		$wp_options_to_delete = array(
+			'ee_no_ticket_prices'                => true,
+			'ee_active_messengers'               => true,
+			'ee_has_activated_messenger'         => true,
+			'ee_flush_rewrite_rules'             => true,
+			'ee_config'                          => false,
+			'ee_data_migration_current_db_state' => true,
+			'ee_data_migration_mapping_'         => false,
+			'ee_data_migration_script_'          => false,
+			'ee_data_migrations'                 => true,
+			'ee_dms_map'                         => false,
+			'ee_notices'                         => true,
+			'lang_file_check_'                   => false,
+			'ee_maintenance_mode'                => true,
+			'ee_ueip_optin'                      => true,
+			'ee_ueip_has_notified'               => true,
+			'ee_plugin_activation_errors'        => true,
+			'ee_id_mapping_from'                 => false,
+			'espresso_persistent_admin_notices'  => true,
+			'ee_encryption_key'                  => true,
+			'pue_force_upgrade_'                 => false,
+			'pue_json_error_'                    => false,
+			'pue_install_key_'                   => false,
+			'pue_verification_error_'            => false,
+			'pu_dismissed_upgrade_'              => false,
+			'external_updates-'                  => false,
+			'ee_extra_data'                      => true,
+			'ee_ssn_'                            => false,
+			'ee_rss_'                            => false,
+			'ee_rte_n_tx_'                       => false,
+			'ee_pers_admin_notices'              => true,
+			'ee_job_parameters_'                 => false,
+			'ee_upload_directories_incomplete'   => true,
+			'ee_verified_db_collations'          => true,
+		);
+		if (is_main_site()) {
+			$wp_options_to_delete['ee_network_config'] = true;
+		}
+		$undeleted_options = array();
+		foreach ($wp_options_to_delete as $option_name => $no_wildcard) {
+			if ($no_wildcard) {
+				if ( ! delete_option($option_name)) {
+					$undeleted_options[] = $option_name;
+				}
+			} else {
+				$option_names_to_delete_from_wildcard = $wpdb->get_col("SELECT option_name FROM $wpdb->options WHERE option_name LIKE '%$option_name%'");
+				foreach ($option_names_to_delete_from_wildcard as $option_name_from_wildcard) {
+					if ( ! delete_option($option_name_from_wildcard)) {
+						$undeleted_options[] = $option_name_from_wildcard;
+					}
+				}
+			}
+		}
+		//also, let's make sure the "ee_config_option_names" wp option stays out by removing the action that adds it
+		remove_action('shutdown', array(EE_Config::instance(), 'shutdown'), 10);
+		if ($remove_all && $espresso_db_update = get_option('espresso_db_update')) {
+			$db_update_sans_ee4 = array();
+			foreach ($espresso_db_update as $version => $times_activated) {
+				if ((string)$version[0] === '3') {//if its NON EE4
+					$db_update_sans_ee4[$version] = $times_activated;
+				}
+			}
+			update_option('espresso_db_update', $db_update_sans_ee4);
+		}
+		$errors = '';
+		if ( ! empty($undeleted_options)) {
+			$errors .= sprintf(
+				__('The following wp-options could not be deleted: %s%s', 'event_espresso'),
+				'<br/>',
+				implode(',<br/>', $undeleted_options)
+			);
+		}
+		if ( ! empty($errors)) {
+			EE_Error::add_attention($errors, __FILE__, __FUNCTION__, __LINE__);
+		}
+	}
+
+	/**
+	 * Gets the mysql error code from the last used query by wpdb
+	 *
+	 * @return int mysql error code, see https://dev.mysql.com/doc/refman/5.5/en/error-messages-server.html
+	 */
+	public static function last_wpdb_error_code()
+	{
+		global $wpdb;
+		if ($wpdb->use_mysqli) {
+			return mysqli_errno($wpdb->dbh);
+		} else {
+			return mysql_errno($wpdb->dbh);
+		}
+	}
+
+	/**
+	 * Checks that the database table exists. Also works on temporary tables (for unit tests mostly).
+	 *
+	 * @global wpdb  $wpdb
+	 * @deprecated instead use TableAnalysis::tableExists()
+	 * @param string $table_name with or without $wpdb->prefix
+	 * @return boolean
+	 */
+	public static function table_exists($table_name)
+	{
+		return \EEH_Activation::getTableAnalysis()->tableExists($table_name);
+	}
+
+	/**
+	 * Resets the cache on EEH_Activation
+	 */
+	public static function reset()
+	{
+		self::$_default_creator_id                             = null;
+		self::$_initialized_db_content_already_in_this_request = false;
+	}
 }
 // End of file EEH_Activation.helper.php
 // Location: /helpers/EEH_Activation.core.php

Spacing +28 added lines, -28 removed lines

@@ -57,7 +57,7 @@ 
      */
     public static function getTableAnalysis()
     {
-        if (! self::$table_analysis instanceof \EventEspresso\core\services\database\TableAnalysis) {
+        if ( ! self::$table_analysis instanceof \EventEspresso\core\services\database\TableAnalysis) {
             self::$table_analysis = EE_Registry::instance()->create('TableAnalysis', array(), true);
         }
         return self::$table_analysis;
@@ -69,7 +69,7 @@ 
      */
     public static function getTableManager()
     {
-        if (! self::$table_manager instanceof \EventEspresso\core\services\database\TableManager) {
+        if ( ! self::$table_manager instanceof \EventEspresso\core\services\database\TableManager) {
             self::$table_manager = EE_Registry::instance()->create('TableManager', array(), true);
         }
         return self::$table_manager;
@@ -183,7 +183,7 @@ 
         if ($which_to_include === 'old') {
             $cron_tasks = array_filter(
                 $cron_tasks,
-                function ($value) {
+                function($value) {
                     return $value === EEH_Activation::cron_task_no_longer_in_use;
                 }
             );
@@ -213,7 +213,7 @@ 
     {
 
         foreach (EEH_Activation::get_cron_tasks('current') as $hook_name => $frequency) {
-            if (! wp_next_scheduled($hook_name)) {
+            if ( ! wp_next_scheduled($hook_name)) {
                 /**
                  * This allows client code to define the initial start timestamp for this schedule.
                  */
@@ -318,7 +318,7 @@ 
             3
         );
         //EE_Config::reset();
-        if (! EE_Config::logging_enabled()) {
+        if ( ! EE_Config::logging_enabled()) {
             delete_option(EE_Config::LOG_NAME);
         }
     }
@@ -333,7 +333,7 @@ 
     public static function load_calendar_config()
     {
         // grab array of all plugin folders and loop thru it
-        $plugins = glob(WP_PLUGIN_DIR . DS . '*', GLOB_ONLYDIR);
+        $plugins = glob(WP_PLUGIN_DIR.DS.'*', GLOB_ONLYDIR);
         if (empty($plugins)) {
             return;
         }
@@ -350,7 +350,7 @@ 
                 || strpos($plugin, 'calendar') !== false
             ) {
                 // this is what we are looking for
-                $calendar_config = $plugin_path . DS . 'EE_Calendar_Config.php';
+                $calendar_config = $plugin_path.DS.'EE_Calendar_Config.php';
                 // does it exist in this folder ?
                 if (is_readable($calendar_config)) {
                     // YEAH! let's load it
@@ -478,7 +478,7 @@ 
             ) {
                 //update Config with post ID
                 $EE_Core_Config->{$critical_page['id']} = $critical_page['post']->ID;
-                if (! EE_Config::instance()->update_espresso_config(false, false)) {
+                if ( ! EE_Config::instance()->update_espresso_config(false, false)) {
                     $msg = __(
                         'The Event Espresso critical page configuration settings could not be updated.',
                         'event_espresso'
@@ -501,7 +501,7 @@ 
                         'A potential issue has been detected with one or more of your Event Espresso pages. Go to %s to view your Event Espresso pages.',
                         'event_espresso'
                     ),
-                    '<a href="' . admin_url('admin.php?page=espresso_general_settings&action=critical_pages') . '">'
+                    '<a href="'.admin_url('admin.php?page=espresso_general_settings&action=critical_pages').'">'
                     . __('Event Espresso Critical Pages Settings', 'event_espresso')
                     . '</a>'
                 )
@@ -527,7 +527,7 @@ 
     public static function get_page_by_ee_shortcode($ee_shortcode)
     {
         global $wpdb;
-        $shortcode_and_opening_bracket = '[' . $ee_shortcode;
+        $shortcode_and_opening_bracket = '['.$ee_shortcode;
         $post_id = $wpdb->get_var("SELECT ID FROM {$wpdb->posts} WHERE post_content LIKE '%$shortcode_and_opening_bracket%' LIMIT 1");
         if ($post_id) {
             return get_post($post_id);
@@ -553,11 +553,11 @@ 
             'post_status'    => 'publish',
             'post_type'      => 'page',
             'comment_status' => 'closed',
-            'post_content'   => '[' . $critical_page['code'] . ']',
+            'post_content'   => '['.$critical_page['code'].']',
         );
 
         $post_id = wp_insert_post($post_args);
-        if (! $post_id) {
+        if ( ! $post_id) {
             $msg = sprintf(
                 __('The Event Espresso  critical page entitled "%s" could not be created.', 'event_espresso'),
                 $critical_page['name']
@@ -566,7 +566,7 @@ 
             return $critical_page;
         }
         // get newly created post's details
-        if (! $critical_page['post'] = get_post($post_id)) {
+        if ( ! $critical_page['post'] = get_post($post_id)) {
             $msg = sprintf(
                 __('The Event Espresso critical page entitled "%s" could not be retrieved.', 'event_espresso'),
                 $critical_page['name']
@@ -603,17 +603,17 @@ 
             $role_to_check
         );
         if ($pre_filtered_id !== false) {
-            return (int)$pre_filtered_id;
+            return (int) $pre_filtered_id;
         }
         $capabilities_key = \EEH_Activation::getTableAnalysis()->ensureTableNameHasPrefix('capabilities');
         $query = $wpdb->prepare(
             "SELECT user_id FROM $wpdb->usermeta WHERE meta_key = '$capabilities_key' AND meta_value LIKE %s ORDER BY user_id ASC LIMIT 0,1",
-            '%' . $role_to_check . '%'
+            '%'.$role_to_check.'%'
         );
         $user_id = $wpdb->get_var($query);
         $user_id = apply_filters('FHEE__EEH_Activation_Helper__get_default_creator_id__user_id', $user_id);
-        if ($user_id && (int)$user_id) {
-            self::$_default_creator_id = (int)$user_id;
+        if ($user_id && (int) $user_id) {
+            self::$_default_creator_id = (int) $user_id;
             return self::$_default_creator_id;
         } else {
             return null;
@@ -648,7 +648,7 @@ 
         }
         do_action('AHEE_log', __FILE__, __FUNCTION__, '');
         if ( ! function_exists('dbDelta')) {
-            require_once(ABSPATH . 'wp-admin/includes/upgrade.php');
+            require_once(ABSPATH.'wp-admin/includes/upgrade.php');
         }
         $tableAnalysis = \EEH_Activation::getTableAnalysis();
         $wp_table_name = $tableAnalysis->ensureTableNameHasPrefix($table_name);
@@ -859,13 +859,13 @@ 
             // reset values array
             $QSG_values = array();
             // if we don't have what we should have (but use $QST_system as as string because that's what we got from the db)
-            if (! in_array("$QSG_system", $question_groups)) {
+            if ( ! in_array("$QSG_system", $question_groups)) {
                 // add it
                 switch ($QSG_system) {
                     case 1:
                         $QSG_values = array(
                             'QSG_name'            => __('Personal Information', 'event_espresso'),
-                            'QSG_identifier'      => 'personal-information-' . time(),
+                            'QSG_identifier'      => 'personal-information-'.time(),
                             'QSG_desc'            => '',
                             'QSG_order'           => 1,
                             'QSG_show_group_name' => 1,
@@ -877,7 +877,7 @@ 
                     case 2:
                         $QSG_values = array(
                             'QSG_name'            => __('Address Information', 'event_espresso'),
-                            'QSG_identifier'      => 'address-information-' . time(),
+                            'QSG_identifier'      => 'address-information-'.time(),
                             'QSG_desc'            => '',
                             'QSG_order'           => 2,
                             'QSG_show_group_name' => 1,
@@ -888,7 +888,7 @@ 
                         break;
                 }
                 // make sure we have some values before inserting them
-                if (! empty($QSG_values)) {
+                if ( ! empty($QSG_values)) {
                     // insert system question
                     $wpdb->insert(
                         $table_name,
@@ -925,7 +925,7 @@ 
             // reset values array
             $QST_values = array();
             // if we don't have what we should have
-            if (! in_array($QST_system, $questions)) {
+            if ( ! in_array($QST_system, $questions)) {
                 // add it
                 switch ($QST_system) {
                     case 'fname':
@@ -1077,7 +1077,7 @@ 
                         );
                         break;
                 }
-                if (! empty($QST_values)) {
+                if ( ! empty($QST_values)) {
                     // insert system question
                     $wpdb->insert(
                         $table_name,
@@ -1138,7 +1138,7 @@ 
      */
     public static function insert_default_payment_methods()
     {
-        if (! EEM_Payment_Method::instance()->count_active(EEM_Payment_Method::scope_cart)) {
+        if ( ! EEM_Payment_Method::instance()->count_active(EEM_Payment_Method::scope_cart)) {
             EE_Registry::instance()->load_lib('Payment_Method_Manager');
             EE_Payment_Method_Manager::instance()->activate_a_payment_method_of_type('Invoice');
         } else {
@@ -1427,7 +1427,7 @@ 
         // this creates an array for tracking events that have no active ticket prices created
         // this allows us to warn admins of the situation so that it can be corrected
         $espresso_no_ticket_prices = get_option('ee_no_ticket_prices', false);
-        if (! $espresso_no_ticket_prices) {
+        if ( ! $espresso_no_ticket_prices) {
             add_option('ee_no_ticket_prices', array(), '', false);
         }
     }
@@ -1466,7 +1466,7 @@ 
             }
         }
         //get all our CPTs
-        $query   = "SELECT ID FROM {$wpdb->posts} WHERE post_type IN (" . implode(",", $ee_post_types) . ")";
+        $query   = "SELECT ID FROM {$wpdb->posts} WHERE post_type IN (".implode(",", $ee_post_types).")";
         $cpt_ids = $wpdb->get_col($query);
         //delete each post meta and term relations too
         foreach ($cpt_ids as $post_id) {
@@ -1606,7 +1606,7 @@ 
         if ($remove_all && $espresso_db_update = get_option('espresso_db_update')) {
             $db_update_sans_ee4 = array();
             foreach ($espresso_db_update as $version => $times_activated) {
-                if ((string)$version[0] === '3') {//if its NON EE4
+                if ((string) $version[0] === '3') {//if its NON EE4
                     $db_update_sans_ee4[$version] = $times_activated;
                 }
             }

modules/single_page_checkout/reg_steps/payment_options/EE_SPCO_Reg_Step_Payment_Options.class.php

Indentation +2870 added lines, -2870 removed lines

@@ -15,2874 +15,2874 @@
 class EE_SPCO_Reg_Step_Payment_Options extends EE_SPCO_Reg_Step
 {
 
-    /**
-     * @access protected
-     * @var EE_Line_Item_Display $Line_Item_Display
-     */
-    protected $line_item_display;
-
-    /**
-     * @access protected
-     * @var boolean $handle_IPN_in_this_request
-     */
-    protected $handle_IPN_in_this_request = false;
-
-
-    /**
-     *    set_hooks - for hooking into EE Core, other modules, etc
-     *
-     * @access    public
-     * @return    void
-     */
-    public static function set_hooks()
-    {
-        add_filter(
-            'FHEE__SPCO__EE_Line_Item_Filter_Collection',
-            array('EE_SPCO_Reg_Step_Payment_Options', 'add_spco_line_item_filters')
-        );
-        add_action(
-            'wp_ajax_switch_spco_billing_form',
-            array('EE_SPCO_Reg_Step_Payment_Options', 'switch_spco_billing_form')
-        );
-        add_action(
-            'wp_ajax_nopriv_switch_spco_billing_form',
-            array('EE_SPCO_Reg_Step_Payment_Options', 'switch_spco_billing_form')
-        );
-        add_action('wp_ajax_save_payer_details', array('EE_SPCO_Reg_Step_Payment_Options', 'save_payer_details'));
-        add_action(
-            'wp_ajax_nopriv_save_payer_details',
-            array('EE_SPCO_Reg_Step_Payment_Options', 'save_payer_details')
-        );
-        add_action(
-            'wp_ajax_get_transaction_details_for_gateways',
-            array('EE_SPCO_Reg_Step_Payment_Options', 'get_transaction_details')
-        );
-        add_action(
-            'wp_ajax_nopriv_get_transaction_details_for_gateways',
-            array('EE_SPCO_Reg_Step_Payment_Options', 'get_transaction_details')
-        );
-        add_filter(
-            'FHEE__EED_Recaptcha___bypass_recaptcha__bypass_request_params_array',
-            array('EE_SPCO_Reg_Step_Payment_Options', 'bypass_recaptcha_for_load_payment_method'),
-            10,
-            1
-        );
-    }
-
-
-    /**
-     *    ajax switch_spco_billing_form
-     *
-     * @throws \EE_Error
-     */
-    public static function switch_spco_billing_form()
-    {
-        EED_Single_Page_Checkout::process_ajax_request('switch_payment_method');
-    }
-
-
-    /**
-     *    ajax save_payer_details
-     *
-     * @throws \EE_Error
-     */
-    public static function save_payer_details()
-    {
-        EED_Single_Page_Checkout::process_ajax_request('save_payer_details_via_ajax');
-    }
-
-
-    /**
-     *    ajax get_transaction_details
-     *
-     * @throws \EE_Error
-     */
-    public static function get_transaction_details()
-    {
-        EED_Single_Page_Checkout::process_ajax_request('get_transaction_details_for_gateways');
-    }
-
-
-    /**
-     * bypass_recaptcha_for_load_payment_method
-     *
-     * @access public
-     * @return array
-     * @throws InvalidArgumentException
-     * @throws \EventEspresso\core\exceptions\InvalidDataTypeException
-     * @throws \EventEspresso\core\exceptions\InvalidInterfaceException
-     */
-    public static function bypass_recaptcha_for_load_payment_method()
-    {
-        return array(
-            'EESID'  => EE_Registry::instance()->SSN->id(),
-            'step'   => 'payment_options',
-            'action' => 'spco_billing_form',
-        );
-    }
-
-
-    /**
-     *    class constructor
-     *
-     * @access    public
-     * @param    EE_Checkout $checkout
-     */
-    public function __construct(EE_Checkout $checkout)
-    {
-        $this->_slug     = 'payment_options';
-        $this->_name     = esc_html__('Payment Options', 'event_espresso');
-        $this->_template = SPCO_REG_STEPS_PATH . $this->_slug . DS . 'payment_options_main.template.php';
-        $this->checkout  = $checkout;
-        $this->_reset_success_message();
-        $this->set_instructions(
-            esc_html__(
-                'Please select a method of payment and provide any necessary billing information before proceeding.',
-                'event_espresso'
-            )
-        );
-    }
-
-
-    /**
-     * @return null
-     */
-    public function line_item_display()
-    {
-        return $this->line_item_display;
-    }
-
-
-    /**
-     * @param null $line_item_display
-     */
-    public function set_line_item_display($line_item_display)
-    {
-        $this->line_item_display = $line_item_display;
-    }
-
-
-    /**
-     * @return boolean
-     */
-    public function handle_IPN_in_this_request()
-    {
-        return $this->handle_IPN_in_this_request;
-    }
-
-
-    /**
-     * @param boolean $handle_IPN_in_this_request
-     */
-    public function set_handle_IPN_in_this_request($handle_IPN_in_this_request)
-    {
-        $this->handle_IPN_in_this_request = filter_var($handle_IPN_in_this_request, FILTER_VALIDATE_BOOLEAN);
-    }
-
-
-    /**
-     * translate_js_strings
-     *
-     * @return void
-     */
-    public function translate_js_strings()
-    {
-        EE_Registry::$i18n_js_strings['no_payment_method']      = esc_html__(
-            'Please select a method of payment in order to continue.',
-            'event_espresso'
-        );
-        EE_Registry::$i18n_js_strings['invalid_payment_method'] = esc_html__(
-            'A valid method of payment could not be determined. Please refresh the page and try again.',
-            'event_espresso'
-        );
-        EE_Registry::$i18n_js_strings['forwarding_to_offsite']  = esc_html__(
-            'Forwarding to Secure Payment Provider.',
-            'event_espresso'
-        );
-    }
-
-
-    /**
-     * enqueue_styles_and_scripts
-     *
-     * @return void
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws \EventEspresso\core\exceptions\InvalidDataTypeException
-     * @throws \EventEspresso\core\exceptions\InvalidInterfaceException
-     */
-    public function enqueue_styles_and_scripts()
-    {
-        $transaction = $this->checkout->transaction;
-        //if the transaction isn't set or nothing is owed on it, don't enqueue any JS
-        if (! $transaction instanceof EE_Transaction || EEH_Money::compare_floats($transaction->remaining(), 0)) {
-            return;
-        }
-        foreach (EEM_Payment_Method::instance()->get_all_for_transaction($transaction, EEM_Payment_Method::scope_cart) as $payment_method) {
-            $type_obj = $payment_method->type_obj();
-            if ($type_obj instanceof EE_PMT_Base) {
-                $billing_form = $type_obj->generate_new_billing_form($transaction);
-                if ($billing_form instanceof EE_Form_Section_Proper) {
-                    $billing_form->enqueue_js();
-                }
-            }
-        }
-    }
-
-
-    /**
-     * initialize_reg_step
-     *
-     * @return bool
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws ReflectionException
-     * @throws \EventEspresso\core\exceptions\InvalidDataTypeException
-     * @throws \EventEspresso\core\exceptions\InvalidInterfaceException
-     */
-    public function initialize_reg_step()
-    {
-        // TODO: if /when we implement donations, then this will need overriding
-        if (// don't need payment options for:
-            // 	registrations made via the admin
-            // 	completed transactions
-            // 	overpaid transactions
-            // 	$ 0.00 transactions (no payment required)
-            ! $this->checkout->payment_required()
-            // but do NOT remove if current action being called belongs to this reg step
-            && ! is_callable(array($this, $this->checkout->action))
-            && ! $this->completed()
-        ) {
-            // and if so, then we no longer need the Payment Options step
-            if ($this->is_current_step()) {
-                $this->checkout->generate_reg_form = false;
-            }
-            $this->checkout->remove_reg_step($this->_slug);
-            // DEBUG LOG
-            //$this->checkout->log( __CLASS__, __FUNCTION__, __LINE__ );
-            return false;
-        }
-        // load EEM_Payment_Method
-        EE_Registry::instance()->load_model('Payment_Method');
-        // get all active payment methods
-        $this->checkout->available_payment_methods = EEM_Payment_Method::instance()->get_all_for_transaction(
-            $this->checkout->transaction,
-            EEM_Payment_Method::scope_cart
-        );
-        return true;
-    }
-
-
-    /**
-     * @return EE_Form_Section_Proper
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws ReflectionException
-     * @throws \EventEspresso\core\exceptions\EntityNotFoundException
-     * @throws \EventEspresso\core\exceptions\InvalidDataTypeException
-     * @throws \EventEspresso\core\exceptions\InvalidInterfaceException
-     * @throws \EventEspresso\core\exceptions\InvalidStatusException
-     */
-    public function generate_reg_form()
-    {
-        // reset in case someone changes their mind
-        $this->_reset_selected_method_of_payment();
-        // set some defaults
-        $this->checkout->selected_method_of_payment = 'payments_closed';
-        $registrations_requiring_payment            = array();
-        $registrations_for_free_events              = array();
-        $registrations_requiring_pre_approval       = array();
-        $sold_out_events                            = array();
-        $insufficient_spaces_available              = array();
-        $no_payment_required                        = true;
-        // loop thru registrations to gather info
-        $registrations         = $this->checkout->transaction->registrations($this->checkout->reg_cache_where_params);
-        $ejected_registrations = EE_SPCO_Reg_Step_Payment_Options::find_registrations_that_lost_their_space(
-            $registrations,
-            $this->checkout->revisit
-        );
-        foreach ($registrations as $REG_ID => $registration) {
-            /** @var $registration EE_Registration */
-            // has this registration lost it's space ?
-            if (isset($ejected_registrations[ $REG_ID ])) {
-                if ($registration->event()->is_sold_out() || $registration->event()->is_sold_out(true)) {
-                    $sold_out_events[ $registration->event()->ID() ] = $registration->event();
-                } else {
-                    $insufficient_spaces_available[ $registration->event()->ID() ] = $registration->event();
-                }
-                continue;
-            }
-            // event requires admin approval
-            if ($registration->status_ID() === EEM_Registration::status_id_not_approved) {
-                // add event to list of events with pre-approval reg status
-                $registrations_requiring_pre_approval[$REG_ID] = $registration;
-                do_action(
-                    'AHEE__EE_SPCO_Reg_Step_Payment_Options__generate_reg_form__event_requires_pre_approval',
-                    $registration->event(),
-                    $this
-                );
-                continue;
-            }
-            if ($this->checkout->revisit
-                && $registration->status_ID() !== EEM_Registration::status_id_approved
-                && (
-                    $registration->event()->is_sold_out()
-                    || $registration->event()->is_sold_out(true)
-                )
-            ) {
-                // add event to list of events that are sold out
-                $sold_out_events[$registration->event()->ID()] = $registration->event();
-                do_action(
-                    'AHEE__EE_SPCO_Reg_Step_Payment_Options__generate_reg_form__sold_out_event',
-                    $registration->event(),
-                    $this
-                );
-                continue;
-            }
-            // are they allowed to pay now and is there monies owing?
-            if ($registration->owes_monies_and_can_pay()) {
-                $registrations_requiring_payment[$REG_ID] = $registration;
-                do_action(
-                    'AHEE__EE_SPCO_Reg_Step_Payment_Options__generate_reg_form__event_requires_payment',
-                    $registration->event(),
-                    $this
-                );
-            } elseif (! $this->checkout->revisit
-                && $registration->status_ID() !== EEM_Registration::status_id_not_approved
-                && $registration->ticket()->is_free()
-            ) {
-                $registrations_for_free_events[$registration->event()->ID()] = $registration;
-            }
-        }
-        $subsections = array();
-        // now decide which template to load
-        if (! empty($sold_out_events)) {
-            $subsections['sold_out_events'] = $this->_sold_out_events($sold_out_events);
-        }
-        if (! empty($insufficient_spaces_available)) {
-            $subsections['insufficient_space'] = $this->_insufficient_spaces_available(
-                $insufficient_spaces_available
-            );
-        }
-        if (! empty($registrations_requiring_pre_approval)) {
-            $subsections['registrations_requiring_pre_approval'] = $this->_registrations_requiring_pre_approval(
-                $registrations_requiring_pre_approval
-            );
-        }
-        if (! empty($registrations_for_free_events)) {
-            $subsections['no_payment_required'] = $this->_no_payment_required($registrations_for_free_events);
-        }
-        if (! empty($registrations_requiring_payment)) {
-            if ($this->checkout->amount_owing > 0) {
-                // autoload Line_Item_Display classes
-                EEH_Autoloader::register_line_item_filter_autoloaders();
-                $line_item_filter_processor = new EE_Line_Item_Filter_Processor(
-                    apply_filters(
-                        'FHEE__SPCO__EE_Line_Item_Filter_Collection',
-                        new EE_Line_Item_Filter_Collection()
-                    ),
-                    $this->checkout->cart->get_grand_total()
-                );
-                /** @var EE_Line_Item $filtered_line_item_tree */
-                $filtered_line_item_tree = $line_item_filter_processor->process();
-                EEH_Autoloader::register_line_item_display_autoloaders();
-                $this->set_line_item_display(new EE_Line_Item_Display('spco'));
-                $subsections['payment_options'] = $this->_display_payment_options(
-                    $this->line_item_display->display_line_item(
-                        $filtered_line_item_tree,
-                        array('registrations' => $registrations)
-                    )
-                );
-                $this->checkout->amount_owing   = $filtered_line_item_tree->total();
-                $this->_apply_registration_payments_to_amount_owing($registrations);
-            }
-            $no_payment_required = false;
-        } else {
-            $this->_hide_reg_step_submit_button_if_revisit();
-        }
-        $this->_save_selected_method_of_payment();
-
-        $subsections['default_hidden_inputs'] = $this->reg_step_hidden_inputs();
-        $subsections['extra_hidden_inputs']   = $this->_extra_hidden_inputs($no_payment_required);
-
-        return new EE_Form_Section_Proper(
-            array(
-                'name'            => $this->reg_form_name(),
-                'html_id'         => $this->reg_form_name(),
-                'subsections'     => $subsections,
-                'layout_strategy' => new EE_No_Layout(),
-            )
-        );
-    }
-
-
-    /**
-     * add line item filters required for this reg step
-     * these filters are applied via this line in EE_SPCO_Reg_Step_Payment_Options::set_hooks():
-     *        add_filter( 'FHEE__SPCO__EE_Line_Item_Filter_Collection', array( 'EE_SPCO_Reg_Step_Payment_Options',
-     *        'add_spco_line_item_filters' ) ); so any code that wants to use the same set of filters during the
-     *        payment options reg step, can apply these filters via the following: apply_filters(
-     *        'FHEE__SPCO__EE_Line_Item_Filter_Collection', new EE_Line_Item_Filter_Collection() ) or to an existing
-     *        filter collection by passing that instead of instantiating a new collection
-     *
-     * @param \EE_Line_Item_Filter_Collection $line_item_filter_collection
-     * @return EE_Line_Item_Filter_Collection
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws ReflectionException
-     * @throws \EventEspresso\core\exceptions\EntityNotFoundException
-     * @throws \EventEspresso\core\exceptions\InvalidDataTypeException
-     * @throws \EventEspresso\core\exceptions\InvalidInterfaceException
-     * @throws \EventEspresso\core\exceptions\InvalidStatusException
-     */
-    public static function add_spco_line_item_filters(EE_Line_Item_Filter_Collection $line_item_filter_collection)
-    {
-        if (! EE_Registry::instance()->SSN instanceof EE_Session) {
-            return $line_item_filter_collection;
-        }
-        if (! EE_Registry::instance()->SSN->checkout() instanceof EE_Checkout) {
-            return $line_item_filter_collection;
-        }
-        if (! EE_Registry::instance()->SSN->checkout()->transaction instanceof EE_Transaction) {
-            return $line_item_filter_collection;
-        }
-        $line_item_filter_collection->add(
-            new EE_Billable_Line_Item_Filter(
-                EE_SPCO_Reg_Step_Payment_Options::remove_ejected_registrations(
-                    EE_Registry::instance()->SSN->checkout()->transaction->registrations(
-                        EE_Registry::instance()->SSN->checkout()->reg_cache_where_params
-                    )
-                )
-            )
-        );
-        $line_item_filter_collection->add(new EE_Non_Zero_Line_Item_Filter());
-        return $line_item_filter_collection;
-    }
-
-
-    /**
-     * remove_ejected_registrations
-     * if a registrant has lost their potential space at an event due to lack of payment,
-     * then this method removes them from the list of registrations being paid for during this request
-     *
-     * @param \EE_Registration[] $registrations
-     * @return EE_Registration[]
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws ReflectionException
-     * @throws \EventEspresso\core\exceptions\EntityNotFoundException
-     * @throws \EventEspresso\core\exceptions\InvalidDataTypeException
-     * @throws \EventEspresso\core\exceptions\InvalidInterfaceException
-     * @throws \EventEspresso\core\exceptions\InvalidStatusException
-     */
-    public static function remove_ejected_registrations(array $registrations)
-    {
-        $ejected_registrations = EE_SPCO_Reg_Step_Payment_Options::find_registrations_that_lost_their_space(
-            $registrations,
-            EE_Registry::instance()->SSN->checkout()->revisit
-        );
-        foreach ($registrations as $REG_ID => $registration) {
-            // has this registration lost it's space ?
-            if (isset($ejected_registrations[$REG_ID])) {
-                unset($registrations[$REG_ID]);
-                continue;
-            }
-        }
-        return $registrations;
-    }
-
-
-    /**
-     * find_registrations_that_lost_their_space
-     * If a registrant chooses an offline payment method like Invoice,
-     * then no space is reserved for them at the event until they fully pay fo that site
-     * (unless the event's default reg status is set to APPROVED)
-     * if a registrant then later returns to pay, but the number of spaces available has been reduced due to sales,
-     * then this method will determine which registrations have lost the ability to complete the reg process.
-     *
-     * @param \EE_Registration[] $registrations
-     * @param bool               $revisit
-     * @return array
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws ReflectionException
-     * @throws \EventEspresso\core\exceptions\EntityNotFoundException
-     * @throws \EventEspresso\core\exceptions\InvalidDataTypeException
-     * @throws \EventEspresso\core\exceptions\InvalidInterfaceException
-     * @throws \EventEspresso\core\exceptions\InvalidStatusException
-     */
-    public static function find_registrations_that_lost_their_space(array $registrations, $revisit = false)
-    {
-        // registrations per event
-        $event_reg_count = array();
-        // spaces left per event
-        $event_spaces_remaining = array();
-        // tickets left sorted by ID
-        $tickets_remaining = array();
-        // registrations that have lost their space
-        $ejected_registrations = array();
-        foreach ($registrations as $REG_ID => $registration) {
-            if ($registration->status_ID() === EEM_Registration::status_id_approved
-                || apply_filters(
-                    'FHEE__EE_SPCO_Reg_Step_Payment_Options__find_registrations_that_lost_their_space__allow_reg_payment',
-                    false,
-                    $registration,
-                    $revisit
-                )
-            ) {
-                continue;
-            }
-            $EVT_ID = $registration->event_ID();
-            $ticket = $registration->ticket();
-            if (! isset($tickets_remaining[$ticket->ID()])) {
-                $tickets_remaining[$ticket->ID()] = $ticket->remaining();
-            }
-            if ($tickets_remaining[$ticket->ID()] > 0) {
-                if (! isset($event_reg_count[$EVT_ID])) {
-                    $event_reg_count[$EVT_ID] = 0;
-                }
-                $event_reg_count[$EVT_ID]++;
-                if (! isset($event_spaces_remaining[$EVT_ID])) {
-                    $event_spaces_remaining[$EVT_ID] = $registration->event()->spaces_remaining_for_sale();
-                }
-            }
-            if ($revisit
-                && ($tickets_remaining[$ticket->ID()] === 0
-                    || $event_reg_count[$EVT_ID] > $event_spaces_remaining[$EVT_ID]
-                )
-            ) {
-                $ejected_registrations[$REG_ID] = $registration->event();
-                if ($registration->status_ID() !== EEM_Registration::status_id_wait_list) {
-                    /** @type EE_Registration_Processor $registration_processor */
-                    $registration_processor = EE_Registry::instance()->load_class('Registration_Processor');
-                    // at this point, we should have enough details about the registrant to consider the registration
-                    // NOT incomplete
-                    $registration_processor->manually_update_registration_status(
-                        $registration,
-                        EEM_Registration::status_id_wait_list
-                    );
-                }
-            }
-        }
-        return $ejected_registrations;
-    }
-
-
-    /**
-     * _hide_reg_step_submit_button
-     * removes the html for the reg step submit button
-     * by replacing it with an empty string via filter callback
-     *
-     * @return void
-     */
-    protected function _adjust_registration_status_if_event_old_sold()
-    {
-    }
-
-
-    /**
-     * _hide_reg_step_submit_button
-     * removes the html for the reg step submit button
-     * by replacing it with an empty string via filter callback
-     *
-     * @return void
-     */
-    protected function _hide_reg_step_submit_button_if_revisit()
-    {
-        if ($this->checkout->revisit) {
-            add_filter('FHEE__EE_SPCO_Reg_Step__reg_step_submit_button__sbmt_btn_html', '__return_empty_string');
-        }
-    }
-
-
-    /**
-     * sold_out_events
-     * displays notices regarding events that have sold out since hte registrant first signed up
-     *
-     * @param \EE_Event[] $sold_out_events_array
-     * @return \EE_Form_Section_Proper
-     * @throws \EE_Error
-     */
-    private function _sold_out_events($sold_out_events_array = array())
-    {
-        // set some defaults
-        $this->checkout->selected_method_of_payment = 'events_sold_out';
-        $sold_out_events                            = '';
-        foreach ($sold_out_events_array as $sold_out_event) {
-            $sold_out_events .= EEH_HTML::li(
-                EEH_HTML::span(
-                    '  ' . $sold_out_event->name(),
-                    '',
-                    'dashicons dashicons-marker ee-icon-size-16 pink-text'
-                )
-            );
-        }
-        return new EE_Form_Section_Proper(
-            array(
-                'layout_strategy' => new EE_Template_Layout(
-                    array(
-                        'layout_template_file' => SPCO_REG_STEPS_PATH
-                                                  . $this->_slug
-                                                  . DS
-                                                  . 'sold_out_events.template.php',
-                        'template_args'        => apply_filters(
-                            'FHEE__EE_SPCO_Reg_Step_Payment_Options___sold_out_events__template_args',
-                            array(
-                                'sold_out_events'     => $sold_out_events,
-                                'sold_out_events_msg' => apply_filters(
-                                    'FHEE__EE_SPCO_Reg_Step_Payment_Options___sold_out_events__sold_out_events_msg',
-                                    sprintf(
-                                        esc_html__(
-                                            'It appears that the event you were about to make a payment for has sold out since you first registered. If you have already made a partial payment towards this event, please contact the event administrator for a refund.%3$s%3$s%1$sPlease note that availability can change at any time due to cancellations, so please check back again later if registration for this event(s) is important to you.%2$s',
-                                            'event_espresso'
-                                        ),
-                                        '<strong>',
-                                        '</strong>',
-                                        '<br />'
-                                    )
-                                ),
-                            )
-                        ),
-                    )
-                ),
-            )
-        );
-    }
-
-
-    /**
-     * _insufficient_spaces_available
-     * displays notices regarding events that do not have enough remaining spaces
-     * to satisfy the current number of registrations looking to pay
-     *
-     * @param \EE_Event[] $insufficient_spaces_events_array
-     * @return \EE_Form_Section_Proper
-     * @throws \EE_Error
-     */
-    private function _insufficient_spaces_available($insufficient_spaces_events_array = array())
-    {
-        // set some defaults
-        $this->checkout->selected_method_of_payment = 'invoice';
-        $insufficient_space_events                  = '';
-        foreach ($insufficient_spaces_events_array as $event) {
-            if ($event instanceof EE_Event) {
-                $insufficient_space_events .= EEH_HTML::li(
-                    EEH_HTML::span(' ' . $event->name(), '', 'dashicons dashicons-marker ee-icon-size-16 pink-text')
-                );
-            }
-        }
-        return new EE_Form_Section_Proper(
-            array(
-                'subsections'     => array(
-                    'default_hidden_inputs' => $this->reg_step_hidden_inputs(),
-                    'extra_hidden_inputs'   => $this->_extra_hidden_inputs(),
-                ),
-                'layout_strategy' => new EE_Template_Layout(
-                    array(
-                        'layout_template_file' => SPCO_REG_STEPS_PATH
-                                                  . $this->_slug
-                                                  . DS
-                                                  . 'sold_out_events.template.php',
-                        'template_args'        => apply_filters(
-                            'FHEE__EE_SPCO_Reg_Step_Payment_Options___insufficient_spaces_available__template_args',
-                            array(
-                                'sold_out_events'     => $insufficient_space_events,
-                                'sold_out_events_msg' => apply_filters(
-                                    'FHEE__EE_SPCO_Reg_Step_Payment_Options___insufficient_spaces_available__insufficient_space_msg',
-                                    esc_html__(
-                                        'It appears that the event you were about to make a payment for has sold additional tickets since you first registered, and there are no longer enough spaces left to accommodate your selections. You may continue to pay and secure the available space(s) remaining, or simply cancel if you no longer wish to purchase. If you have already made a partial payment towards this event, please contact the event administrator for a refund.',
-                                        'event_espresso'
-                                    )
-                                ),
-                            )
-                        ),
-                    )
-                ),
-            )
-        );
-    }
-
-
-    /**
-     * registrations_requiring_pre_approval
-     *
-     * @param array $registrations_requiring_pre_approval
-     * @return EE_Form_Section_Proper
-     * @throws EE_Error
-     * @throws \EventEspresso\core\exceptions\EntityNotFoundException
-     */
-    private function _registrations_requiring_pre_approval($registrations_requiring_pre_approval = array())
-    {
-        $events_requiring_pre_approval = '';
-        foreach ($registrations_requiring_pre_approval as $registration) {
-            if ($registration instanceof EE_Registration && $registration->event() instanceof EE_Event) {
-                $events_requiring_pre_approval[$registration->event()->ID()] = EEH_HTML::li(
-                    EEH_HTML::span(
-                        '',
-                        '',
-                        'dashicons dashicons-marker ee-icon-size-16 orange-text'
-                    )
-                    . EEH_HTML::span($registration->event()->name(), '', 'orange-text')
-                );
-            }
-        }
-        return new EE_Form_Section_Proper(
-            array(
-                'layout_strategy' => new EE_Template_Layout(
-                    array(
-                        'layout_template_file' => SPCO_REG_STEPS_PATH
-                                                  . $this->_slug
-                                                  . DS
-                                                  . 'events_requiring_pre_approval.template.php', // layout_template
-                        'template_args'        => apply_filters(
-                            'FHEE__EE_SPCO_Reg_Step_Payment_Options___sold_out_events__template_args',
-                            array(
-                                'events_requiring_pre_approval'     => implode('', $events_requiring_pre_approval),
-                                'events_requiring_pre_approval_msg' => apply_filters(
-                                    'FHEE__EE_SPCO_Reg_Step_Payment_Options___events_requiring_pre_approval__events_requiring_pre_approval_msg',
-                                    esc_html__(
-                                        'The following events do not require payment at this time and will not be billed during this transaction. Billing will only occur after the attendee has been approved by the event organizer. You will be notified when your registration has been processed. If this is a free event, then no billing will occur.',
-                                        'event_espresso'
-                                    )
-                                ),
-                            )
-                        ),
-                    )
-                ),
-            )
-        );
-    }
-
-
-    /**
-     * _no_payment_required
-     *
-     * @param \EE_Event[] $registrations_for_free_events
-     * @return \EE_Form_Section_Proper
-     * @throws \EE_Error
-     */
-    private function _no_payment_required($registrations_for_free_events = array())
-    {
-        // set some defaults
-        $this->checkout->selected_method_of_payment = 'no_payment_required';
-        // generate no_payment_required form
-        return new EE_Form_Section_Proper(
-            array(
-                'layout_strategy' => new EE_Template_Layout(
-                    array(
-                        'layout_template_file' => SPCO_REG_STEPS_PATH
-                                                  . $this->_slug
-                                                  . DS
-                                                  . 'no_payment_required.template.php', // layout_template
-                        'template_args'        => apply_filters(
-                            'FHEE__EE_SPCO_Reg_Step_Payment_Options___no_payment_required__template_args',
-                            array(
-                                'revisit'                       => $this->checkout->revisit,
-                                'registrations'                 => array(),
-                                'ticket_count'                  => array(),
-                                'registrations_for_free_events' => $registrations_for_free_events,
-                                'no_payment_required_msg'       => EEH_HTML::p(
-                                    esc_html__('This is a free event, so no billing will occur.', 'event_espresso')
-                                ),
-                            )
-                        ),
-                    )
-                ),
-            )
-        );
-    }
-
-
-    /**
-     * _display_payment_options
-     *
-     * @param string $transaction_details
-     * @return EE_Form_Section_Proper
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws \EventEspresso\core\exceptions\InvalidDataTypeException
-     * @throws \EventEspresso\core\exceptions\InvalidInterfaceException
-     */
-    private function _display_payment_options($transaction_details = '')
-    {
-        // has method_of_payment been set by no-js user?
-        $this->checkout->selected_method_of_payment = $this->_get_selected_method_of_payment();
-        // build payment options form
-        return apply_filters(
-            'FHEE__EE_SPCO_Reg_Step_Payment_Options___display_payment_options__payment_options_form',
-            new EE_Form_Section_Proper(
-                array(
-                    'subsections'     => array(
-                        'before_payment_options' => apply_filters(
-                            'FHEE__EE_SPCO_Reg_Step_Payment_Options___display_payment_options__before_payment_options',
-                            new EE_Form_Section_Proper(
-                                array('layout_strategy' => new EE_Div_Per_Section_Layout())
-                            )
-                        ),
-                        'payment_options'        => $this->_setup_payment_options(),
-                        'after_payment_options'  => apply_filters(
-                            'FHEE__EE_SPCO_Reg_Step_Payment_Options___display_payment_options__after_payment_options',
-                            new EE_Form_Section_Proper(
-                                array('layout_strategy' => new EE_Div_Per_Section_Layout())
-                            )
-                        ),
-                    ),
-                    'layout_strategy' => new EE_Template_Layout(
-                        array(
-                            'layout_template_file' => $this->_template,
-                            'template_args'        => apply_filters(
-                                'FHEE__EE_SPCO_Reg_Step_Payment_Options___display_payment_options__template_args',
-                                array(
-                                    'reg_count'                 => $this->line_item_display->total_items(),
-                                    'transaction_details'       => $transaction_details,
-                                    'available_payment_methods' => array(),
-                                )
-                            ),
-                        )
-                    ),
-                )
-            )
-        );
-    }
-
-
-    /**
-     * _extra_hidden_inputs
-     *
-     * @param bool $no_payment_required
-     * @return \EE_Form_Section_Proper
-     * @throws \EE_Error
-     */
-    private function _extra_hidden_inputs($no_payment_required = true)
-    {
-        return new EE_Form_Section_Proper(
-            array(
-                'html_id'         => 'ee-' . $this->slug() . '-extra-hidden-inputs',
-                'layout_strategy' => new EE_Div_Per_Section_Layout(),
-                'subsections'     => array(
-                    'spco_no_payment_required' => new EE_Hidden_Input(
-                        array(
-                            'normalization_strategy' => new EE_Boolean_Normalization(),
-                            'html_name'              => 'spco_no_payment_required',
-                            'html_id'                => 'spco-no-payment-required-payment_options',
-                            'default'                => $no_payment_required,
-                        )
-                    ),
-                    'spco_transaction_id'      => new EE_Fixed_Hidden_Input(
-                        array(
-                            'normalization_strategy' => new EE_Int_Normalization(),
-                            'html_name'              => 'spco_transaction_id',
-                            'html_id'                => 'spco-transaction-id',
-                            'default'                => $this->checkout->transaction->ID(),
-                        )
-                    ),
-                ),
-            )
-        );
-    }
-
-
-    /**
-     *    _apply_registration_payments_to_amount_owing
-     *
-     * @access protected
-     * @param array $registrations
-     * @throws EE_Error
-     */
-    protected function _apply_registration_payments_to_amount_owing(array $registrations)
-    {
-        $payments = array();
-        foreach ($registrations as $registration) {
-            if ($registration instanceof EE_Registration && $registration->owes_monies_and_can_pay()) {
-                $payments += $registration->registration_payments();
-            }
-        }
-        if (! empty($payments)) {
-            foreach ($payments as $payment) {
-                if ($payment instanceof EE_Registration_Payment) {
-                    $this->checkout->amount_owing -= $payment->amount();
-                }
-            }
-        }
-    }
-
-
-    /**
-     *    _reset_selected_method_of_payment
-     *
-     * @access    private
-     * @param    bool $force_reset
-     * @return void
-     * @throws InvalidArgumentException
-     * @throws \EventEspresso\core\exceptions\InvalidDataTypeException
-     * @throws \EventEspresso\core\exceptions\InvalidInterfaceException
-     */
-    private function _reset_selected_method_of_payment($force_reset = false)
-    {
-        $reset_payment_method = $force_reset
-            ? true
-            : sanitize_text_field(EE_Registry::instance()->REQ->get('reset_payment_method', false));
-        if ($reset_payment_method) {
-            $this->checkout->selected_method_of_payment = null;
-            $this->checkout->payment_method             = null;
-            $this->checkout->billing_form               = null;
-            $this->_save_selected_method_of_payment();
-        }
-    }
-
-
-    /**
-     * _save_selected_method_of_payment
-     * stores the selected_method_of_payment in the session
-     * so that it's available for all subsequent requests including AJAX
-     *
-     * @access        private
-     * @param string $selected_method_of_payment
-     * @return void
-     * @throws InvalidArgumentException
-     * @throws \EventEspresso\core\exceptions\InvalidDataTypeException
-     * @throws \EventEspresso\core\exceptions\InvalidInterfaceException
-     */
-    private function _save_selected_method_of_payment($selected_method_of_payment = '')
-    {
-        $selected_method_of_payment = ! empty($selected_method_of_payment)
-            ? $selected_method_of_payment
-            : $this->checkout->selected_method_of_payment;
-        EE_Registry::instance()->SSN->set_session_data(
-            array('selected_method_of_payment' => $selected_method_of_payment)
-        );
-    }
-
-
-    /**
-     * _setup_payment_options
-     *
-     * @return EE_Form_Section_Proper
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws ReflectionException
-     * @throws \EventEspresso\core\exceptions\InvalidDataTypeException
-     * @throws \EventEspresso\core\exceptions\InvalidInterfaceException
-     */
-    public function _setup_payment_options()
-    {
-        // load payment method classes
-        $this->checkout->available_payment_methods = $this->_get_available_payment_methods();
-        if (empty($this->checkout->available_payment_methods)) {
-            EE_Error::add_error(
-                apply_filters(
-                    'FHEE__EE_SPCO_Reg_Step_Payment_Options___setup_payment_options__error_message_no_payment_methods',
-                    sprintf(
-                        esc_html__(
-                            'Sorry, you cannot complete your purchase because a payment method is not active.%1$s Please contact %2$s for assistance and provide a description of the problem.',
-                            'event_espresso'
-                        ),
-                        '<br>',
-                        EE_Registry::instance()->CFG->organization->get_pretty('email')
-                    )
-                ),
-                __FILE__,
-                __FUNCTION__,
-                __LINE__
-            );
-        }
-        // switch up header depending on number of available payment methods
-        $payment_method_header     = count($this->checkout->available_payment_methods) > 1
-            ? apply_filters(
-                'FHEE__registration_page_payment_options__method_of_payment_hdr',
-                esc_html__('Please Select Your Method of Payment', 'event_espresso')
-            )
-            : apply_filters(
-                'FHEE__registration_page_payment_options__method_of_payment_hdr',
-                esc_html__('Method of Payment', 'event_espresso')
-            );
-        $available_payment_methods = array(
-            // display the "Payment Method" header
-            'payment_method_header' => new EE_Form_Section_HTML(
-                EEH_HTML::h4($payment_method_header, 'method-of-payment-hdr')
-            ),
-        );
-        // the list of actual payment methods ( invoice, paypal, etc ) in a  ( slug => HTML )  format
-        $available_payment_method_options = array();
-        $default_payment_method_option    = array();
-        // additional instructions to be displayed and hidden below payment methods (adding a clearing div to start)
-        $payment_methods_billing_info = array(
-            new EE_Form_Section_HTML(
-                EEH_HTML::div('<br />', '', '', 'clear:both;')
-            ),
-        );
-        // loop through payment methods
-        foreach ($this->checkout->available_payment_methods as $payment_method) {
-            if ($payment_method instanceof EE_Payment_Method) {
-                $payment_method_button = EEH_HTML::img(
-                    $payment_method->button_url(),
-                    $payment_method->name(),
-                    'spco-payment-method-' . $payment_method->slug() . '-btn-img',
-                    'spco-payment-method-btn-img'
-                );
-                // check if any payment methods are set as default
-                // if payment method is already selected OR nothing is selected and this payment method should be
-                // open_by_default
-                if (($this->checkout->selected_method_of_payment === $payment_method->slug())
-                    || (! $this->checkout->selected_method_of_payment && $payment_method->open_by_default())
-                ) {
-                    $this->checkout->selected_method_of_payment = $payment_method->slug();
-                    $this->_save_selected_method_of_payment();
-                    $default_payment_method_option[$payment_method->slug()] = $payment_method_button;
-                } else {
-                    $available_payment_method_options[$payment_method->slug()] = $payment_method_button;
-                }
-                $payment_methods_billing_info[$payment_method->slug() . '-info'] = $this->_payment_method_billing_info(
-                    $payment_method
-                );
-            }
-        }
-        // prepend available_payment_method_options with default_payment_method_option so that it appears first in list
-        // of PMs
-        $available_payment_method_options = $default_payment_method_option + $available_payment_method_options;
-        // now generate the actual form  inputs
-        $available_payment_methods['available_payment_methods'] = $this->_available_payment_method_inputs(
-            $available_payment_method_options
-        );
-        $available_payment_methods                              += $payment_methods_billing_info;
-        // build the available payment methods form
-        return new EE_Form_Section_Proper(
-            array(
-                'html_id'         => 'spco-available-methods-of-payment-dv',
-                'subsections'     => $available_payment_methods,
-                'layout_strategy' => new EE_Div_Per_Section_Layout(),
-            )
-        );
-    }
-
-
-    /**
-     * _get_available_payment_methods
-     *
-     * @return EE_Payment_Method[]
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws ReflectionException
-     * @throws \EventEspresso\core\exceptions\InvalidDataTypeException
-     * @throws \EventEspresso\core\exceptions\InvalidInterfaceException
-     */
-    protected function _get_available_payment_methods()
-    {
-        if (! empty($this->checkout->available_payment_methods)) {
-            return $this->checkout->available_payment_methods;
-        }
-        $available_payment_methods = array();
-        // load EEM_Payment_Method
-        EE_Registry::instance()->load_model('Payment_Method');
-        /** @type EEM_Payment_Method $EEM_Payment_Method */
-        $EEM_Payment_Method = EE_Registry::instance()->LIB->EEM_Payment_Method;
-        // get all active payment methods
-        $payment_methods = $EEM_Payment_Method->get_all_for_transaction(
-            $this->checkout->transaction,
-            EEM_Payment_Method::scope_cart
-        );
-        foreach ($payment_methods as $payment_method) {
-            if ($payment_method instanceof EE_Payment_Method) {
-                $available_payment_methods[$payment_method->slug()] = $payment_method;
-            }
-        }
-        return $available_payment_methods;
-    }
-
-
-    /**
-     *    _available_payment_method_inputs
-     *
-     * @access    private
-     * @param    array $available_payment_method_options
-     * @return    \EE_Form_Section_Proper
-     */
-    private function _available_payment_method_inputs($available_payment_method_options = array())
-    {
-        // generate inputs
-        return new EE_Form_Section_Proper(
-            array(
-                'html_id'         => 'ee-available-payment-method-inputs',
-                'layout_strategy' => new EE_Div_Per_Section_Layout(),
-                'subsections'     => array(
-                    '' => new EE_Radio_Button_Input(
-                        $available_payment_method_options,
-                        array(
-                            'html_name'          => 'selected_method_of_payment',
-                            'html_class'         => 'spco-payment-method',
-                            'default'            => $this->checkout->selected_method_of_payment,
-                            'label_size'         => 11,
-                            'enforce_label_size' => true,
-                        )
-                    ),
-                ),
-            )
-        );
-    }
-
-
-    /**
-     *    _payment_method_billing_info
-     *
-     * @access    private
-     * @param    EE_Payment_Method $payment_method
-     * @return EE_Form_Section_Proper
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws \EventEspresso\core\exceptions\InvalidDataTypeException
-     * @throws \EventEspresso\core\exceptions\InvalidInterfaceException
-     */
-    private function _payment_method_billing_info(EE_Payment_Method $payment_method)
-    {
-        $currently_selected = $this->checkout->selected_method_of_payment === $payment_method->slug()
-            ? true
-            : false;
-        // generate the billing form for payment method
-        $billing_form                 = $currently_selected
-            ? $this->_get_billing_form_for_payment_method($payment_method)
-            : new EE_Form_Section_HTML();
-        $this->checkout->billing_form = $currently_selected
-            ? $billing_form
-            : $this->checkout->billing_form;
-        // it's all in the details
-        $info_html = EEH_HTML::h3(
-            esc_html__('Important information regarding your payment', 'event_espresso'),
-            '',
-            'spco-payment-method-hdr'
-        );
-        // add some info regarding the step, either from what's saved in the admin,
-        // or a default string depending on whether the PM has a billing form or not
-        if ($payment_method->description()) {
-            $payment_method_info = $payment_method->description();
-        } elseif ($billing_form instanceof EE_Billing_Info_Form) {
-            $payment_method_info = sprintf(
-                esc_html__(
-                    'Please provide the following billing information, then click the "%1$s" button below in order to proceed.',
-                    'event_espresso'
-                ),
-                $this->submit_button_text()
-            );
-        } else {
-            $payment_method_info = sprintf(
-                esc_html__('Please click the "%1$s" button below in order to proceed.', 'event_espresso'),
-                $this->submit_button_text()
-            );
-        }
-        $info_html .= EEH_HTML::p(
-            apply_filters(
-                'FHEE__EE_SPCO_Reg_Step_Payment_Options___payment_method_billing_info__payment_method_info',
-                $payment_method_info
-            ),
-            '',
-            'spco-payment-method-desc ee-attention'
-        );
-        return new EE_Form_Section_Proper(
-            array(
-                'html_id'         => 'spco-payment-method-info-' . $payment_method->slug(),
-                'html_class'      => 'spco-payment-method-info-dv',
-                // only display the selected or default PM
-                'html_style'      => $currently_selected ? '' : 'display:none;',
-                'layout_strategy' => new EE_Div_Per_Section_Layout(),
-                'subsections'     => array(
-                    'info'         => new EE_Form_Section_HTML($info_html),
-                    'billing_form' => $currently_selected ? $billing_form : new EE_Form_Section_HTML(),
-                ),
-            )
-        );
-    }
-
-
-    /**
-     * get_billing_form_html_for_payment_method
-     *
-     * @access public
-     * @return string
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws ReflectionException
-     * @throws \EventEspresso\core\exceptions\InvalidDataTypeException
-     * @throws \EventEspresso\core\exceptions\InvalidInterfaceException
-     */
-    public function get_billing_form_html_for_payment_method()
-    {
-        // how have they chosen to pay?
-        $this->checkout->selected_method_of_payment = $this->_get_selected_method_of_payment(true);
-        $this->checkout->payment_method             = $this->_get_payment_method_for_selected_method_of_payment();
-        if (! $this->checkout->payment_method instanceof EE_Payment_Method) {
-            return false;
-        }
-        if (apply_filters(
-            'FHEE__EE_SPCO_Reg_Step_Payment_Options__registration_checkout__selected_payment_method__display_success',
-            false
-        )) {
-            EE_Error::add_success(
-                apply_filters(
-                    'FHEE__Single_Page_Checkout__registration_checkout__selected_payment_method',
-                    sprintf(
-                        esc_html__(
-                            'You have selected "%s" as your method of payment. Please note the important payment information below.',
-                            'event_espresso'
-                        ),
-                        $this->checkout->payment_method->name()
-                    )
-                )
-            );
-        }
-        // now generate billing form for selected method of payment
-        $payment_method_billing_form = $this->_get_billing_form_for_payment_method($this->checkout->payment_method);
-        // fill form with attendee info if applicable
-        if ($payment_method_billing_form instanceof EE_Billing_Attendee_Info_Form
-            && $this->checkout->transaction_has_primary_registrant()
-        ) {
-            $payment_method_billing_form->populate_from_attendee(
-                $this->checkout->transaction->primary_registration()->attendee()
-            );
-        }
-        // and debug content
-        if ($payment_method_billing_form instanceof EE_Billing_Info_Form
-            && $this->checkout->payment_method->type_obj() instanceof EE_PMT_Base
-        ) {
-            $payment_method_billing_form =
-                $this->checkout->payment_method->type_obj()->apply_billing_form_debug_settings(
-                    $payment_method_billing_form
-                );
-        }
-        $billing_info = $payment_method_billing_form instanceof EE_Form_Section_Proper
-            ? $payment_method_billing_form->get_html()
-            : '';
-        $this->checkout->json_response->set_return_data(array('payment_method_info' => $billing_info));
-        // localize validation rules for main form
-        $this->checkout->current_step->reg_form->localize_validation_rules();
-        $this->checkout->json_response->add_validation_rules(EE_Form_Section_Proper::js_localization());
-        return true;
-    }
-
-
-    /**
-     * _get_billing_form_for_payment_method
-     *
-     * @access private
-     * @param EE_Payment_Method $payment_method
-     * @return EE_Billing_Info_Form|EE_Form_Section_HTML
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws \EventEspresso\core\exceptions\InvalidDataTypeException
-     * @throws \EventEspresso\core\exceptions\InvalidInterfaceException
-     */
-    private function _get_billing_form_for_payment_method(EE_Payment_Method $payment_method)
-    {
-        $billing_form = $payment_method->type_obj()->billing_form(
-            $this->checkout->transaction,
-            array('amount_owing' => $this->checkout->amount_owing)
-        );
-        if ($billing_form instanceof EE_Billing_Info_Form) {
-            if (apply_filters(
-                'FHEE__EE_SPCO_Reg_Step_Payment_Options__registration_checkout__selected_payment_method__display_success',
-                false
-            )
-                && EE_Registry::instance()->REQ->is_set('payment_method')
-            ) {
-                EE_Error::add_success(
-                    apply_filters(
-                        'FHEE__Single_Page_Checkout__registration_checkout__selected_payment_method',
-                        sprintf(
-                            esc_html__(
-                                'You have selected "%s" as your method of payment. Please note the important payment information below.',
-                                'event_espresso'
-                            ),
-                            $payment_method->name()
-                        )
-                    )
-                );
-            }
-            return apply_filters(
-                'FHEE__EE_SPCO_Reg_Step_Payment_Options___get_billing_form_for_payment_method__billing_form',
-                $billing_form,
-                $payment_method
-            );
-        }
-        // no actual billing form, so return empty HTML form section
-        return new EE_Form_Section_HTML();
-    }
-
-
-    /**
-     * _get_selected_method_of_payment
-     *
-     * @access private
-     * @param boolean $required whether to throw an error if the "selected_method_of_payment"
-     *                          is not found in the incoming request
-     * @param string  $request_param
-     * @return NULL|string
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws \EventEspresso\core\exceptions\InvalidDataTypeException
-     * @throws \EventEspresso\core\exceptions\InvalidInterfaceException
-     */
-    private function _get_selected_method_of_payment(
-        $required = false,
-        $request_param = 'selected_method_of_payment'
-    ) {
-        // is selected_method_of_payment set in the request ?
-        $selected_method_of_payment = EE_Registry::instance()->REQ->get($request_param, false);
-        if ($selected_method_of_payment) {
-            // sanitize it
-            $selected_method_of_payment = is_array($selected_method_of_payment)
-                ? array_shift($selected_method_of_payment)
-                : $selected_method_of_payment;
-            $selected_method_of_payment = sanitize_text_field($selected_method_of_payment);
-            // store it in the session so that it's available for all subsequent requests including AJAX
-            $this->_save_selected_method_of_payment($selected_method_of_payment);
-        } else {
-            // or is is set in the session ?
-            $selected_method_of_payment = EE_Registry::instance()->SSN->get_session_data(
-                'selected_method_of_payment'
-            );
-        }
-        // do ya really really gotta have it?
-        if (empty($selected_method_of_payment) && $required) {
-            EE_Error::add_error(
-                sprintf(
-                    esc_html__(
-                        'The selected method of payment could not be determined.%sPlease ensure that you have selected one before proceeding.%sIf you continue to experience difficulties, then refresh your browser and try again, or contact %s for assistance.',
-                        'event_espresso'
-                    ),
-                    '<br/>',
-                    '<br/>',
-                    EE_Registry::instance()->CFG->organization->get_pretty('email')
-                ),
-                __FILE__,
-                __FUNCTION__,
-                __LINE__
-            );
-            return null;
-        }
-        return $selected_method_of_payment;
-    }
-
-
-
-
-
-
-    /********************************************************************************************************/
-    /***********************************  SWITCH PAYMENT METHOD  ************************************/
-    /********************************************************************************************************/
-    /**
-     * switch_payment_method
-     *
-     * @access public
-     * @return string
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws \EventEspresso\core\exceptions\InvalidDataTypeException
-     * @throws \EventEspresso\core\exceptions\InvalidInterfaceException
-     */
-    public function switch_payment_method()
-    {
-        if (! $this->_verify_payment_method_is_set()) {
-            return false;
-        }
-        if (apply_filters(
-            'FHEE__EE_SPCO_Reg_Step_Payment_Options__registration_checkout__selected_payment_method__display_success',
-            false
-        )) {
-            EE_Error::add_success(
-                apply_filters(
-                    'FHEE__Single_Page_Checkout__registration_checkout__selected_payment_method',
-                    sprintf(
-                        esc_html__(
-                            'You have selected "%s" as your method of payment. Please note the important payment information below.',
-                            'event_espresso'
-                        ),
-                        $this->checkout->payment_method->name()
-                    )
-                )
-            );
-        }
-        // generate billing form for selected method of payment if it hasn't been done already
-        if ($this->checkout->payment_method->type_obj()->has_billing_form()) {
-            $this->checkout->billing_form = $this->_get_billing_form_for_payment_method(
-                $this->checkout->payment_method
-            );
-        }
-        // fill form with attendee info if applicable
-        if (apply_filters(
-            'FHEE__populate_billing_form_fields_from_attendee',
-            (
-                $this->checkout->billing_form instanceof EE_Billing_Attendee_Info_Form
-                && $this->checkout->transaction_has_primary_registrant()
-            ),
-            $this->checkout->billing_form,
-            $this->checkout->transaction
-        )
-        ) {
-            $this->checkout->billing_form->populate_from_attendee(
-                $this->checkout->transaction->primary_registration()->attendee()
-            );
-        }
-        // and debug content
-        if ($this->checkout->billing_form instanceof EE_Billing_Info_Form
-            && $this->checkout->payment_method->type_obj() instanceof EE_PMT_Base
-        ) {
-            $this->checkout->billing_form =
-                $this->checkout->payment_method->type_obj()->apply_billing_form_debug_settings(
-                    $this->checkout->billing_form
-                );
-        }
-        // get html and validation rules for form
-        if ($this->checkout->billing_form instanceof EE_Form_Section_Proper) {
-            $this->checkout->json_response->set_return_data(
-                array('payment_method_info' => $this->checkout->billing_form->get_html())
-            );
-            // localize validation rules for main form
-            $this->checkout->billing_form->localize_validation_rules(true);
-            $this->checkout->json_response->add_validation_rules(EE_Form_Section_Proper::js_localization());
-        } else {
-            $this->checkout->json_response->set_return_data(array('payment_method_info' => ''));
-        }
-        //prevents advancement to next step
-        $this->checkout->continue_reg = false;
-        return true;
-    }
-
-
-    /**
-     * _verify_payment_method_is_set
-     *
-     * @return bool
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws ReflectionException
-     * @throws \EventEspresso\core\exceptions\InvalidDataTypeException
-     * @throws \EventEspresso\core\exceptions\InvalidInterfaceException
-     */
-    protected function _verify_payment_method_is_set()
-    {
-        // generate billing form for selected method of payment if it hasn't been done already
-        if (empty($this->checkout->selected_method_of_payment)) {
-            // how have they chosen to pay?
-            $this->checkout->selected_method_of_payment = $this->_get_selected_method_of_payment(true);
-        } else {
-            // choose your own adventure based on method_of_payment
-            switch ($this->checkout->selected_method_of_payment) {
-                case 'events_sold_out' :
-                    EE_Error::add_attention(
-                        apply_filters(
-                            'FHEE__EE_SPCO_Reg_Step_Payment_Options___verify_payment_method_is_set__sold_out_events_msg',
-                            esc_html__(
-                                'It appears that the event you were about to make a payment for has sold out since this form first loaded. Please contact the event administrator if you believe this is an error.',
-                                'event_espresso'
-                            )
-                        ),
-                        __FILE__, __FUNCTION__, __LINE__
-                    );
-                    return false;
-                    break;
-                case 'payments_closed' :
-                    EE_Error::add_attention(
-                        apply_filters(
-                            'FHEE__EE_SPCO_Reg_Step_Payment_Options___verify_payment_method_is_set__payments_closed_msg',
-                            esc_html__(
-                                'It appears that the event you were about to make a payment for is not accepting payments at this time. Please contact the event administrator if you believe this is an error.',
-                                'event_espresso'
-                            )
-                        ),
-                        __FILE__, __FUNCTION__, __LINE__
-                    );
-                    return false;
-                    break;
-                case 'no_payment_required' :
-                    EE_Error::add_attention(
-                        apply_filters(
-                            'FHEE__EE_SPCO_Reg_Step_Payment_Options___verify_payment_method_is_set__no_payment_required_msg',
-                            esc_html__(
-                                'It appears that the event you were about to make a payment for does not require payment. Please contact the event administrator if you believe this is an error.',
-                                'event_espresso'
-                            )
-                        ),
-                        __FILE__, __FUNCTION__, __LINE__
-                    );
-                    return false;
-                    break;
-                default:
-            }
-        }
-        // verify payment method
-        if (! $this->checkout->payment_method instanceof EE_Payment_Method) {
-            // get payment method for selected method of payment
-            $this->checkout->payment_method = $this->_get_payment_method_for_selected_method_of_payment();
-        }
-        return $this->checkout->payment_method instanceof EE_Payment_Method ? true : false;
-    }
-
-
-
-    /********************************************************************************************************/
-    /***************************************  SAVE PAYER DETAILS  ****************************************/
-    /********************************************************************************************************/
-    /**
-     * save_payer_details_via_ajax
-     *
-     * @return void
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws ReflectionException
-     * @throws RuntimeException
-     * @throws \EventEspresso\core\exceptions\InvalidDataTypeException
-     * @throws \EventEspresso\core\exceptions\InvalidInterfaceException
-     */
-    public function save_payer_details_via_ajax()
-    {
-        if (! $this->_verify_payment_method_is_set()) {
-            return;
-        }
-        // generate billing form for selected method of payment if it hasn't been done already
-        if ($this->checkout->payment_method->type_obj()->has_billing_form()) {
-            $this->checkout->billing_form = $this->_get_billing_form_for_payment_method(
-                $this->checkout->payment_method
-            );
-        }
-        // generate primary attendee from payer info if applicable
-        if (! $this->checkout->transaction_has_primary_registrant()) {
-            $attendee = $this->_create_attendee_from_request_data();
-            if ($attendee instanceof EE_Attendee) {
-                foreach ($this->checkout->transaction->registrations() as $registration) {
-                    if ($registration->is_primary_registrant()) {
-                        $this->checkout->primary_attendee_obj = $attendee;
-                        $registration->_add_relation_to($attendee, 'Attendee');
-                        $registration->set_attendee_id($attendee->ID());
-                        $registration->update_cache_after_object_save('Attendee', $attendee);
-                    }
-                }
-            }
-        }
-    }
-
-
-    /**
-     * create_attendee_from_request_data
-     * uses info from alternate GET or POST data (such as AJAX) to create a new attendee
-     *
-     * @return EE_Attendee
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws ReflectionException
-     * @throws \EventEspresso\core\exceptions\InvalidDataTypeException
-     * @throws \EventEspresso\core\exceptions\InvalidInterfaceException
-     */
-    protected function _create_attendee_from_request_data()
-    {
-        // get State ID
-        $STA_ID = ! empty($_REQUEST['state']) ? sanitize_text_field($_REQUEST['state']) : '';
-        if (! empty($STA_ID)) {
-            // can we get state object from name ?
-            EE_Registry::instance()->load_model('State');
-            $state  = EEM_State::instance()->get_col(array(array('STA_name' => $STA_ID), 'limit' => 1), 'STA_ID');
-            $STA_ID = is_array($state) && ! empty($state) ? reset($state) : $STA_ID;
-        }
-        // get Country ISO
-        $CNT_ISO = ! empty($_REQUEST['country']) ? sanitize_text_field($_REQUEST['country']) : '';
-        if (! empty($CNT_ISO)) {
-            // can we get country object from name ?
-            EE_Registry::instance()->load_model('Country');
-            $country = EEM_Country::instance()->get_col(
-                array(array('CNT_name' => $CNT_ISO), 'limit' => 1),
-                'CNT_ISO'
-            );
-            $CNT_ISO = is_array($country) && ! empty($country) ? reset($country) : $CNT_ISO;
-        }
-        // grab attendee data
-        $attendee_data = array(
-            'ATT_fname'    => ! empty($_REQUEST['first_name']) ? sanitize_text_field($_REQUEST['first_name']) : '',
-            'ATT_lname'    => ! empty($_REQUEST['last_name']) ? sanitize_text_field($_REQUEST['last_name']) : '',
-            'ATT_email'    => ! empty($_REQUEST['email']) ? sanitize_email($_REQUEST['email']) : '',
-            'ATT_address'  => ! empty($_REQUEST['address']) ? sanitize_text_field($_REQUEST['address']) : '',
-            'ATT_address2' => ! empty($_REQUEST['address2']) ? sanitize_text_field($_REQUEST['address2']) : '',
-            'ATT_city'     => ! empty($_REQUEST['city']) ? sanitize_text_field($_REQUEST['city']) : '',
-            'STA_ID'       => $STA_ID,
-            'CNT_ISO'      => $CNT_ISO,
-            'ATT_zip'      => ! empty($_REQUEST['zip']) ? sanitize_text_field($_REQUEST['zip']) : '',
-            'ATT_phone'    => ! empty($_REQUEST['phone']) ? sanitize_text_field($_REQUEST['phone']) : '',
-        );
-        // validate the email address since it is the most important piece of info
-        if (empty($attendee_data['ATT_email']) || $attendee_data['ATT_email'] !== $_REQUEST['email']) {
-            EE_Error::add_error(
-                esc_html__('An invalid email address was submitted.', 'event_espresso'),
-                __FILE__,
-                __FUNCTION__,
-                __LINE__
-            );
-        }
-        // does this attendee already exist in the db ? we're searching using a combination of first name, last name,
-        // AND email address
-        if (! empty($attendee_data['ATT_fname'])
-            && ! empty($attendee_data['ATT_lname'])
-            && ! empty($attendee_data['ATT_email'])
-        ) {
-            $existing_attendee = EE_Registry::instance()->LIB->EEM_Attendee->find_existing_attendee(
-                array(
-                    'ATT_fname' => $attendee_data['ATT_fname'],
-                    'ATT_lname' => $attendee_data['ATT_lname'],
-                    'ATT_email' => $attendee_data['ATT_email'],
-                )
-            );
-            if ($existing_attendee instanceof EE_Attendee) {
-                return $existing_attendee;
-            }
-        }
-        // no existing attendee? kk let's create a new one
-        // kinda lame, but we need a first and last name to create an attendee, so use the email address if those
-        // don't exist
-        $attendee_data['ATT_fname'] = ! empty($attendee_data['ATT_fname'])
-            ? $attendee_data['ATT_fname']
-            : $attendee_data['ATT_email'];
-        $attendee_data['ATT_lname'] = ! empty($attendee_data['ATT_lname'])
-            ? $attendee_data['ATT_lname']
-            : $attendee_data['ATT_email'];
-        return EE_Attendee::new_instance($attendee_data);
-    }
-
-
-
-    /********************************************************************************************************/
-    /****************************************  PROCESS REG STEP  *****************************************/
-    /********************************************************************************************************/
-    /**
-     * process_reg_step
-     *
-     * @return bool
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws ReflectionException
-     * @throws \EventEspresso\core\exceptions\EntityNotFoundException
-     * @throws \EventEspresso\core\exceptions\InvalidDataTypeException
-     * @throws \EventEspresso\core\exceptions\InvalidInterfaceException
-     * @throws \EventEspresso\core\exceptions\InvalidStatusException
-     */
-    public function process_reg_step()
-    {
-        // how have they chosen to pay?
-        $this->checkout->selected_method_of_payment = $this->checkout->transaction->is_free()
-            ? 'no_payment_required'
-            : $this->_get_selected_method_of_payment(true);
-        // choose your own adventure based on method_of_payment
-        switch ($this->checkout->selected_method_of_payment) {
-
-            case 'events_sold_out' :
-                $this->checkout->redirect     = true;
-                $this->checkout->redirect_url = $this->checkout->cancel_page_url;
-                $this->checkout->json_response->set_redirect_url($this->checkout->redirect_url);
-                // mark this reg step as completed
-                $this->set_completed();
-                return false;
-                break;
-
-            case 'payments_closed' :
-                if (apply_filters(
-                    'FHEE__EE_SPCO_Reg_Step_Payment_Options__process_reg_step__payments_closed__display_success',
-                    false
-                )) {
-                    EE_Error::add_success(
-                        esc_html__('no payment required at this time.', 'event_espresso'),
-                        __FILE__,
-                        __FUNCTION__,
-                        __LINE__
-                    );
-                }
-                // mark this reg step as completed
-                $this->set_completed();
-                return true;
-                break;
-
-            case 'no_payment_required' :
-                if (apply_filters(
-                    'FHEE__EE_SPCO_Reg_Step_Payment_Options__process_reg_step__no_payment_required__display_success',
-                    false
-                )) {
-                    EE_Error::add_success(
-                        esc_html__('no payment required.', 'event_espresso'),
-                        __FILE__,
-                        __FUNCTION__,
-                        __LINE__
-                    );
-                }
-                // mark this reg step as completed
-                $this->set_completed();
-                return true;
-                break;
-
-            default:
-                $registrations         = EE_Registry::instance()->SSN->checkout()->transaction->registrations(
-                    EE_Registry::instance()->SSN->checkout()->reg_cache_where_params
-                );
-                $ejected_registrations = EE_SPCO_Reg_Step_Payment_Options::find_registrations_that_lost_their_space(
-                    $registrations,
-                    EE_Registry::instance()->SSN->checkout()->revisit
-                );
-                // calculate difference between the two arrays
-                $registrations = array_diff($registrations, $ejected_registrations);
-                if (empty($registrations)) {
-                    $this->_redirect_because_event_sold_out();
-                    return false;
-                }
-                $payment_successful = $this->_process_payment();
-                if ($payment_successful) {
-                    $this->checkout->continue_reg = true;
-                    $this->_maybe_set_completed($this->checkout->payment_method);
-                } else {
-                    $this->checkout->continue_reg = false;
-                }
-                return $payment_successful;
-        }
-    }
-
-
-    /**
-     * _redirect_because_event_sold_out
-     *
-     * @access protected
-     * @return void
-     */
-    protected function _redirect_because_event_sold_out()
-    {
-        $this->checkout->continue_reg = false;
-        // set redirect URL
-        $this->checkout->redirect_url = add_query_arg(
-            array('e_reg_url_link' => $this->checkout->reg_url_link),
-            $this->checkout->current_step->reg_step_url()
-        );
-        $this->checkout->json_response->set_redirect_url($this->checkout->redirect_url);
-    }
-
-
-    /**
-     * _maybe_set_completed
-     *
-     * @access protected
-     * @param \EE_Payment_Method $payment_method
-     * @return void
-     * @throws \EE_Error
-     */
-    protected function _maybe_set_completed(EE_Payment_Method $payment_method)
-    {
-        switch ($payment_method->type_obj()->payment_occurs()) {
-            case EE_PMT_Base::offsite :
-                break;
-            case EE_PMT_Base::onsite :
-            case EE_PMT_Base::offline :
-                // mark this reg step as completed
-                $this->set_completed();
-                break;
-        }
-    }
-
-
-    /**
-     *    update_reg_step
-     *    this is the final step after a user  revisits the site to retry a payment
-     *
-     * @return bool
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws ReflectionException
-     * @throws \EventEspresso\core\exceptions\EntityNotFoundException
-     * @throws \EventEspresso\core\exceptions\InvalidDataTypeException
-     * @throws \EventEspresso\core\exceptions\InvalidInterfaceException
-     * @throws \EventEspresso\core\exceptions\InvalidStatusException
-     */
-    public function update_reg_step()
-    {
-        $success = true;
-        // if payment required
-        if ($this->checkout->transaction->total() > 0) {
-            do_action(
-                'AHEE__EE_Single_Page_Checkout__process_finalize_registration__before_gateway',
-                $this->checkout->transaction
-            );
-            // attempt payment via payment method
-            $success = $this->process_reg_step();
-        }
-        if ($success && ! $this->checkout->redirect) {
-            $this->checkout->cart->get_grand_total()->save_this_and_descendants_to_txn(
-                $this->checkout->transaction->ID()
-            );
-            // set return URL
-            $this->checkout->redirect_url = add_query_arg(
-                array('e_reg_url_link' => $this->checkout->reg_url_link),
-                $this->checkout->thank_you_page_url
-            );
-        }
-        return $success;
-    }
-
-
-    /**
-     *    _process_payment
-     *
-     * @access private
-     * @return bool
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws ReflectionException
-     * @throws RuntimeException
-     * @throws \EventEspresso\core\exceptions\InvalidDataTypeException
-     * @throws \EventEspresso\core\exceptions\InvalidInterfaceException
-     */
-    private function _process_payment()
-    {
-        // basically confirm that the event hasn't sold out since they hit the page
-        if (! $this->_last_second_ticket_verifications()) {
-            return false;
-        }
-        // ya gotta make a choice man
-        if (empty($this->checkout->selected_method_of_payment)) {
-            $this->checkout->json_response->set_plz_select_method_of_payment(
-                esc_html__('Please select a method of payment before proceeding.', 'event_espresso')
-            );
-            return false;
-        }
-        // get EE_Payment_Method object
-        if (! $this->checkout->payment_method = $this->_get_payment_method_for_selected_method_of_payment()) {
-            return false;
-        }
-        // setup billing form
-        if ($this->checkout->payment_method->is_on_site()) {
-            $this->checkout->billing_form = $this->_get_billing_form_for_payment_method(
-                $this->checkout->payment_method
-            );
-            // bad billing form ?
-            if (! $this->_billing_form_is_valid()) {
-                return false;
-            }
-        }
-        // ensure primary registrant has been fully processed
-        if (! $this->_setup_primary_registrant_prior_to_payment()) {
-            return false;
-        }
-        // if session is close to expiring (under 10 minutes by default)
-        if ((time() - EE_Registry::instance()->SSN->expiration()) < EE_Registry::instance()->SSN->extension()) {
-            // add some time to session expiration so that payment can be completed
-            EE_Registry::instance()->SSN->extend_expiration();
-        }
-        /** @type EE_Transaction_Processor $transaction_processor */
-        //$transaction_processor = EE_Registry::instance()->load_class( 'Transaction_Processor' );
-        // in case a registrant leaves to an Off-Site Gateway and never returns, we want to approve any registrations
-        // for events with a default reg status of Approved
-        // $transaction_processor->toggle_registration_statuses_for_default_approved_events(
-        //      $this->checkout->transaction, $this->checkout->reg_cache_where_params
-        // );
-        // attempt payment
-        $payment = $this->_attempt_payment($this->checkout->payment_method);
-        // process results
-        $payment = $this->_validate_payment($payment);
-        $payment = $this->_post_payment_processing($payment);
-        // verify payment
-        if ($payment instanceof EE_Payment) {
-            // store that for later
-            $this->checkout->payment = $payment;
-            // we can also consider the TXN to not have been failed, so temporarily upgrade it's status to abandoned
-            $this->checkout->transaction->toggle_failed_transaction_status();
-            $payment_status = $payment->status();
-            if (
-                $payment_status === EEM_Payment::status_id_approved
-                || $payment_status === EEM_Payment::status_id_pending
-            ) {
-                return true;
-            } else {
-                return false;
-            }
-        } else if ($payment === true) {
-            // please note that offline payment methods will NOT make a payment,
-            // but instead just mark themselves as the PMD_ID on the transaction, and return true
-            $this->checkout->payment = $payment;
-            return true;
-        }
-        // where's my money?
-        return false;
-    }
-
-
-    /**
-     * _last_second_ticket_verifications
-     *
-     * @access public
-     * @return bool
-     * @throws EE_Error
-     */
-    protected function _last_second_ticket_verifications()
-    {
-        // don't bother re-validating if not a return visit
-        if (! $this->checkout->revisit) {
-            return true;
-        }
-        $registrations = $this->checkout->transaction->registrations();
-        if (empty($registrations)) {
-            return false;
-        }
-        foreach ($registrations as $registration) {
-            if ($registration instanceof EE_Registration && ! $registration->is_approved()) {
-                $event = $registration->event_obj();
-                if ($event instanceof EE_Event && $event->is_sold_out(true)) {
-                    EE_Error::add_error(
-                        apply_filters(
-                            'FHEE__EE_SPCO_Reg_Step_Payment_Options___last_second_ticket_verifications__sold_out_events_msg',
-                            sprintf(
-                                esc_html__(
-                                    'It appears that the %1$s event that you were about to make a payment for has sold out since you first registered and/or arrived at this page. Please refresh the page and try again. If you have already made a partial payment towards this event, please contact the event administrator for a refund.',
-                                    'event_espresso'
-                                ),
-                                $event->name()
-                            )
-                        ),
-                        __FILE__,
-                        __FUNCTION__,
-                        __LINE__
-                    );
-                    return false;
-                }
-            }
-        }
-        return true;
-    }
-
-
-    /**
-     * redirect_form
-     *
-     * @access public
-     * @return bool
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws ReflectionException
-     * @throws \EventEspresso\core\exceptions\InvalidDataTypeException
-     * @throws \EventEspresso\core\exceptions\InvalidInterfaceException
-     */
-    public function redirect_form()
-    {
-        $payment_method_billing_info = $this->_payment_method_billing_info(
-            $this->_get_payment_method_for_selected_method_of_payment()
-        );
-        $html                        = $payment_method_billing_info->get_html();
-        $html                        .= $this->checkout->redirect_form;
-        EE_Registry::instance()->REQ->add_output($html);
-        return true;
-    }
-
-
-    /**
-     * _billing_form_is_valid
-     *
-     * @access private
-     * @return bool
-     * @throws \EE_Error
-     */
-    private function _billing_form_is_valid()
-    {
-        if (! $this->checkout->payment_method->type_obj()->has_billing_form()) {
-            return true;
-        }
-        if ($this->checkout->billing_form instanceof EE_Billing_Info_Form) {
-            if ($this->checkout->billing_form->was_submitted()) {
-                $this->checkout->billing_form->receive_form_submission();
-                if ($this->checkout->billing_form->is_valid()) {
-                    return true;
-                }
-                $validation_errors = $this->checkout->billing_form->get_validation_errors_accumulated();
-                $error_strings     = array();
-                foreach ($validation_errors as $validation_error) {
-                    if ($validation_error instanceof EE_Validation_Error) {
-                        $form_section = $validation_error->get_form_section();
-                        if ($form_section instanceof EE_Form_Input_Base) {
-                            $label = $form_section->html_label_text();
-                        } elseif ($form_section instanceof EE_Form_Section_Base) {
-                            $label = $form_section->name();
-                        } else {
-                            $label = esc_html__('Validation Error', 'event_espresso');
-                        }
-                        $error_strings[] = sprintf('%1$s: %2$s', $label, $validation_error->getMessage());
-                    }
-                }
-                EE_Error::add_error(
-                    sprintf(
-                        esc_html__(
-                            'One or more billing form inputs are invalid and require correction before proceeding. %1$s %2$s',
-                            'event_espresso'
-                        ),
-                        '<br/>',
-                        implode('<br/>', $error_strings)
-                    ),
-                    __FILE__,
-                    __FUNCTION__,
-                    __LINE__
-                );
-            } else {
-                EE_Error::add_error(
-                    esc_html__(
-                        'The billing form was not submitted or something prevented it\'s submission.',
-                        'event_espresso'
-                    ),
-                    __FILE__,
-                    __FUNCTION__,
-                    __LINE__
-                );
-            }
-        } else {
-            EE_Error::add_error(
-                esc_html__('The submitted billing form is invalid possibly due to a technical reason.', 'event_espresso'),
-                __FILE__,
-                __FUNCTION__,
-                __LINE__
-            );
-        }
-        return false;
-    }
-
-
-    /**
-     * _setup_primary_registrant_prior_to_payment
-     * ensures that the primary registrant has a valid attendee object created with the critical details populated
-     * (first & last name & email) and that both the transaction object and primary registration object have been saved
-     * plz note that any other registrations will NOT be saved at this point (because they may not have any details
-     * yet)
-     *
-     * @access private
-     * @return bool
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws ReflectionException
-     * @throws RuntimeException
-     * @throws \EventEspresso\core\exceptions\InvalidDataTypeException
-     * @throws \EventEspresso\core\exceptions\InvalidInterfaceException
-     */
-    private function _setup_primary_registrant_prior_to_payment()
-    {
-        // check if transaction has a primary registrant and that it has a related Attendee object
-        // if not, then we need to at least gather some primary registrant data before attempting payment
-        if (
-            $this->checkout->billing_form instanceof EE_Billing_Attendee_Info_Form
-            && ! $this->checkout->transaction_has_primary_registrant()
-            && ! $this->_capture_primary_registration_data_from_billing_form()
-        ) {
-            return false;
-        }
-        // because saving an object clears it's cache, we need to do the chevy shuffle
-        // grab the primary_registration object
-        $primary_registration = $this->checkout->transaction->primary_registration();
-        // at this point we'll consider a TXN to not have been failed
-        $this->checkout->transaction->toggle_failed_transaction_status();
-        // save the TXN ( which clears cached copy of primary_registration)
-        $this->checkout->transaction->save();
-        // grab TXN ID and save it to the primary_registration
-        $primary_registration->set_transaction_id($this->checkout->transaction->ID());
-        // save what we have so far
-        $primary_registration->save();
-        return true;
-    }
-
-
-    /**
-     * _capture_primary_registration_data_from_billing_form
-     *
-     * @access private
-     * @return bool
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws ReflectionException
-     * @throws \EventEspresso\core\exceptions\InvalidDataTypeException
-     * @throws \EventEspresso\core\exceptions\InvalidInterfaceException
-     */
-    private function _capture_primary_registration_data_from_billing_form()
-    {
-        // convert billing form data into an attendee
-        $this->checkout->primary_attendee_obj = $this->checkout->billing_form->create_attendee_from_billing_form_data();
-        if (! $this->checkout->primary_attendee_obj instanceof EE_Attendee) {
-            EE_Error::add_error(
-                sprintf(
-                    esc_html__(
-                        'The billing form details could not be used for attendee details due to a technical issue.%sPlease try again or contact %s for assistance.',
-                        'event_espresso'
-                    ),
-                    '<br/>',
-                    EE_Registry::instance()->CFG->organization->get_pretty('email')
-                ),
-                __FILE__,
-                __FUNCTION__,
-                __LINE__
-            );
-            return false;
-        }
-        $primary_registration = $this->checkout->transaction->primary_registration();
-        if (! $primary_registration instanceof EE_Registration) {
-            EE_Error::add_error(
-                sprintf(
-                    esc_html__(
-                        'The primary registrant for this transaction could not be determined due to a technical issue.%sPlease try again or contact %s for assistance.',
-                        'event_espresso'
-                    ),
-                    '<br/>',
-                    EE_Registry::instance()->CFG->organization->get_pretty('email')
-                ),
-                __FILE__,
-                __FUNCTION__,
-                __LINE__
-            );
-            return false;
-        }
-        if (! $primary_registration->_add_relation_to($this->checkout->primary_attendee_obj, 'Attendee')
-              instanceof
-              EE_Attendee
-        ) {
-            EE_Error::add_error(
-                sprintf(
-                    esc_html__(
-                        'The primary registrant could not be associated with this transaction due to a technical issue.%sPlease try again or contact %s for assistance.',
-                        'event_espresso'
-                    ),
-                    '<br/>',
-                    EE_Registry::instance()->CFG->organization->get_pretty('email')
-                ),
-                __FILE__,
-                __FUNCTION__,
-                __LINE__
-            );
-            return false;
-        }
-        /** @type EE_Registration_Processor $registration_processor */
-        $registration_processor = EE_Registry::instance()->load_class('Registration_Processor');
-        // at this point, we should have enough details about the registrant to consider the registration NOT incomplete
-        $registration_processor->toggle_incomplete_registration_status_to_default($primary_registration);
-        return true;
-    }
-
-
-    /**
-     * _get_payment_method_for_selected_method_of_payment
-     * retrieves a valid payment method
-     *
-     * @access public
-     * @return EE_Payment_Method
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws ReflectionException
-     * @throws \EventEspresso\core\exceptions\InvalidDataTypeException
-     * @throws \EventEspresso\core\exceptions\InvalidInterfaceException
-     */
-    private function _get_payment_method_for_selected_method_of_payment()
-    {
-        if ($this->checkout->selected_method_of_payment === 'events_sold_out') {
-            $this->_redirect_because_event_sold_out();
-            return null;
-        }
-        // get EE_Payment_Method object
-        if (isset($this->checkout->available_payment_methods[$this->checkout->selected_method_of_payment])) {
-            $payment_method = $this->checkout->available_payment_methods[$this->checkout->selected_method_of_payment];
-        } else {
-            // load EEM_Payment_Method
-            EE_Registry::instance()->load_model('Payment_Method');
-            /** @type EEM_Payment_Method $EEM_Payment_Method */
-            $EEM_Payment_Method = EE_Registry::instance()->LIB->EEM_Payment_Method;
-            $payment_method     = $EEM_Payment_Method->get_one_by_slug($this->checkout->selected_method_of_payment);
-        }
-        // verify $payment_method
-        if (! $payment_method instanceof EE_Payment_Method) {
-            // not a payment
-            EE_Error::add_error(
-                sprintf(
-                    esc_html__(
-                        'The selected method of payment could not be determined due to a technical issue.%sPlease try again or contact %s for assistance.',
-                        'event_espresso'
-                    ),
-                    '<br/>',
-                    EE_Registry::instance()->CFG->organization->get_pretty('email')
-                ),
-                __FILE__,
-                __FUNCTION__,
-                __LINE__
-            );
-            return null;
-        }
-        // and verify it has a valid Payment_Method Type object
-        if (! $payment_method->type_obj() instanceof EE_PMT_Base) {
-            // not a payment
-            EE_Error::add_error(
-                sprintf(
-                    esc_html__(
-                        'A valid payment method could not be determined due to a technical issue.%sPlease try again or contact %s for assistance.',
-                        'event_espresso'
-                    ),
-                    '<br/>',
-                    EE_Registry::instance()->CFG->organization->get_pretty('email')
-                ),
-                __FILE__,
-                __FUNCTION__,
-                __LINE__
-            );
-            return null;
-        }
-        return $payment_method;
-    }
-
-
-    /**
-     *    _attempt_payment
-     *
-     * @access    private
-     * @type    EE_Payment_Method $payment_method
-     * @return mixed EE_Payment | boolean
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws ReflectionException
-     * @throws \EventEspresso\core\exceptions\InvalidDataTypeException
-     * @throws \EventEspresso\core\exceptions\InvalidInterfaceException
-     */
-    private function _attempt_payment(EE_Payment_Method $payment_method)
-    {
-        $payment = null;
-        $this->checkout->transaction->save();
-        $payment_processor = EE_Registry::instance()->load_core('Payment_Processor');
-        if (! $payment_processor instanceof EE_Payment_Processor) {
-            return false;
-        }
-        try {
-            $payment_processor->set_revisit($this->checkout->revisit);
-            // generate payment object
-            $payment = $payment_processor->process_payment(
-                $payment_method,
-                $this->checkout->transaction,
-                $this->checkout->amount_owing,
-                $this->checkout->billing_form,
-                $this->_get_return_url($payment_method),
-                'CART',
-                $this->checkout->admin_request,
-                true,
-                $this->reg_step_url()
-            );
-        } catch (Exception $e) {
-            $this->_handle_payment_processor_exception($e);
-        }
-        return $payment;
-    }
-
-
-    /**
-     * _handle_payment_processor_exception
-     *
-     * @access protected
-     * @param \Exception $e
-     * @return void
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws \EventEspresso\core\exceptions\InvalidDataTypeException
-     * @throws \EventEspresso\core\exceptions\InvalidInterfaceException
-     */
-    protected function _handle_payment_processor_exception(Exception $e)
-    {
-        EE_Error::add_error(
-            sprintf(
-                esc_html__(
-                    'The payment could not br processed due to a technical issue.%1$sPlease try again or contact %2$s for assistance.||The following Exception was thrown in %4$s on line %5$s:%1$s%3$s',
-                    'event_espresso'
-                ),
-                '<br/>',
-                EE_Registry::instance()->CFG->organization->get_pretty('email'),
-                $e->getMessage(),
-                $e->getFile(),
-                $e->getLine()
-            ),
-            __FILE__,
-            __FUNCTION__,
-            __LINE__
-        );
-    }
-
-
-    /**
-     * _get_return_url
-     *
-     * @access protected
-     * @param \EE_Payment_Method $payment_method
-     * @return string
-     * @throws \EE_Error
-     */
-    protected function _get_return_url(EE_Payment_Method $payment_method)
-    {
-        $return_url = '';
-        switch ($payment_method->type_obj()->payment_occurs()) {
-            case EE_PMT_Base::offsite :
-                $return_url = add_query_arg(
-                    array(
-                        'action'                     => 'process_gateway_response',
-                        'selected_method_of_payment' => $this->checkout->selected_method_of_payment,
-                        'spco_txn'                   => $this->checkout->transaction->ID(),
-                    ),
-                    $this->reg_step_url()
-                );
-                break;
-            case EE_PMT_Base::onsite :
-            case EE_PMT_Base::offline :
-                $return_url = $this->checkout->next_step->reg_step_url();
-                break;
-        }
-        return $return_url;
-    }
-
-
-    /**
-     * _validate_payment
-     *
-     * @access private
-     * @param EE_Payment $payment
-     * @return EE_Payment|FALSE
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws \EventEspresso\core\exceptions\InvalidDataTypeException
-     * @throws \EventEspresso\core\exceptions\InvalidInterfaceException
-     */
-    private function _validate_payment($payment = null)
-    {
-        if ($this->checkout->payment_method->is_off_line()) {
-            return true;
-        }
-        // verify payment object
-        if (! $payment instanceof EE_Payment) {
-            // not a payment
-            EE_Error::add_error(
-                sprintf(
-                    esc_html__(
-                        'A valid payment was not generated due to a technical issue.%1$sPlease try again or contact %2$s for assistance.',
-                        'event_espresso'
-                    ),
-                    '<br/>',
-                    EE_Registry::instance()->CFG->organization->get_pretty('email')
-                ),
-                __FILE__,
-                __FUNCTION__,
-                __LINE__
-            );
-            return false;
-        }
-        return $payment;
-    }
-
-
-    /**
-     * _post_payment_processing
-     *
-     * @access private
-     * @param EE_Payment|bool $payment
-     * @return bool
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws \EventEspresso\core\exceptions\InvalidDataTypeException
-     * @throws \EventEspresso\core\exceptions\InvalidInterfaceException
-     */
-    private function _post_payment_processing($payment = null)
-    {
-        // Off-Line payment?
-        if ($payment === true) {
-            //$this->_setup_redirect_for_next_step();
-            return true;
-            // On-Site payment?
-        } else if ($this->checkout->payment_method->is_on_site()) {
-            if (! $this->_process_payment_status($payment, EE_PMT_Base::onsite)) {
-                //$this->_setup_redirect_for_next_step();
-                $this->checkout->continue_reg = false;
-            }
-            // Off-Site payment?
-        } else if ($this->checkout->payment_method->is_off_site()) {
-            // if a payment object was made and it specifies a redirect url, then we'll setup that redirect info
-            if ($payment instanceof EE_Payment && $payment->redirect_url()) {
-                do_action('AHEE_log', __CLASS__, __FUNCTION__, $payment->redirect_url(), '$payment->redirect_url()');
-                $this->checkout->redirect      = true;
-                $this->checkout->redirect_form = $payment->redirect_form();
-                $this->checkout->redirect_url  = $this->reg_step_url('redirect_form');
-                // set JSON response
-                $this->checkout->json_response->set_redirect_form($this->checkout->redirect_form);
-                // and lastly, let's bump the payment status to pending
-                $payment->set_status(EEM_Payment::status_id_pending);
-                $payment->save();
-            } else {
-                // not a payment
-                $this->checkout->continue_reg = false;
-                EE_Error::add_error(
-                    sprintf(
-                        esc_html__(
-                            'It appears the Off Site Payment Method was not configured properly.%sPlease try again or contact %s for assistance.',
-                            'event_espresso'
-                        ),
-                        '<br/>',
-                        EE_Registry::instance()->CFG->organization->get_pretty('email')
-                    ),
-                    __FILE__,
-                    __FUNCTION__,
-                    __LINE__
-                );
-            }
-        } else {
-            // ummm ya... not Off-Line, not On-Site, not off-Site ????
-            $this->checkout->continue_reg = false;
-            return false;
-        }
-        return $payment;
-    }
-
-
-    /**
-     *    _process_payment_status
-     *
-     * @access private
-     * @type    EE_Payment $payment
-     * @param string       $payment_occurs
-     * @return bool
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws \EventEspresso\core\exceptions\InvalidDataTypeException
-     * @throws \EventEspresso\core\exceptions\InvalidInterfaceException
-     */
-    private function _process_payment_status($payment, $payment_occurs = EE_PMT_Base::offline)
-    {
-        // off-line payment? carry on
-        if ($payment_occurs === EE_PMT_Base::offline) {
-            return true;
-        }
-        // verify payment validity
-        if ($payment instanceof EE_Payment) {
-            do_action('AHEE_log', __CLASS__, __FUNCTION__, $payment->status(), '$payment->status()');
-            $msg = $payment->gateway_response();
-            // check results
-            switch ($payment->status()) {
-                // good payment
-                case EEM_Payment::status_id_approved :
-                    EE_Error::add_success(
-                        esc_html__('Your payment was processed successfully.', 'event_espresso'),
-                        __FILE__,
-                        __FUNCTION__,
-                        __LINE__
-                    );
-                    return true;
-                    break;
-                // slow payment
-                case EEM_Payment::status_id_pending :
-                    if (empty($msg)) {
-                        $msg = esc_html__(
-                            'Your payment appears to have been processed successfully, but the Instant Payment Notification has not yet been received. It should arrive shortly.',
-                            'event_espresso'
-                        );
-                    }
-                    EE_Error::add_success($msg, __FILE__, __FUNCTION__, __LINE__);
-                    return true;
-                    break;
-                // don't wanna payment
-                case EEM_Payment::status_id_cancelled :
-                    if (empty($msg)) {
-                        $msg = _n(
-                            'Payment cancelled. Please try again.',
-                            'Payment cancelled. Please try again or select another method of payment.',
-                            count($this->checkout->available_payment_methods),
-                            'event_espresso'
-                        );
-                    }
-                    EE_Error::add_attention($msg, __FILE__, __FUNCTION__, __LINE__);
-                    return false;
-                    break;
-                // not enough payment
-                case EEM_Payment::status_id_declined :
-                    if (empty($msg)) {
-                        $msg = _n(
-                            'We\'re sorry but your payment was declined. Please try again.',
-                            'We\'re sorry but your payment was declined. Please try again or select another method of payment.',
-                            count($this->checkout->available_payment_methods),
-                            'event_espresso'
-                        );
-                    }
-                    EE_Error::add_attention($msg, __FILE__, __FUNCTION__, __LINE__);
-                    return false;
-                    break;
-                // bad payment
-                case EEM_Payment::status_id_failed :
-                    if (! empty($msg)) {
-                        EE_Error::add_error($msg, __FILE__, __FUNCTION__, __LINE__);
-                        return false;
-                    }
-                    // default to error below
-                    break;
-            }
-        }
-        // off-site payment gateway responses are too unreliable, so let's just assume that
-        // the payment processing is just running slower than the registrant's request
-        if ($payment_occurs === EE_PMT_Base::offsite) {
-            return true;
-        }
-        EE_Error::add_error(
-            sprintf(
-                esc_html__(
-                    'Your payment could not be processed successfully due to a technical issue.%sPlease try again or contact %s for assistance.',
-                    'event_espresso'
-                ),
-                '<br/>',
-                EE_Registry::instance()->CFG->organization->get_pretty('email')
-            ),
-            __FILE__,
-            __FUNCTION__,
-            __LINE__
-        );
-        return false;
-    }
-
-
-
-
-
-
-    /********************************************************************************************************/
-    /**********************************  PROCESS GATEWAY RESPONSE  **********************************/
-    /********************************************************************************************************/
-    /**
-     * process_gateway_response
-     * this is the return point for Off-Site Payment Methods
-     * It will attempt to "handle the IPN" if it appears that this has not already occurred,
-     * otherwise, it will load up the last payment made for the TXN.
-     * If the payment retrieved looks good, it will then either:
-     *    complete the current step and allow advancement to the next reg step
-     *        or present the payment options again
-     *
-     * @access private
-     * @return EE_Payment|FALSE
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws ReflectionException
-     * @throws \EventEspresso\core\exceptions\InvalidDataTypeException
-     * @throws \EventEspresso\core\exceptions\InvalidInterfaceException
-     * @throws \EventEspresso\core\exceptions\InvalidSessionDataException
-     */
-    public function process_gateway_response()
-    {
-        $payment = null;
-        // how have they chosen to pay?
-        $this->checkout->selected_method_of_payment = $this->_get_selected_method_of_payment(true);
-        // get EE_Payment_Method object
-        if (! $this->checkout->payment_method = $this->_get_payment_method_for_selected_method_of_payment()) {
-            $this->checkout->continue_reg = false;
-            return false;
-        }
-        if (! $this->checkout->payment_method->is_off_site()) {
-            return false;
-        }
-        $this->_validate_offsite_return();
-        // DEBUG LOG
-        //$this->checkout->log(
-        //	__CLASS__, __FUNCTION__, __LINE__,
-        //	array(
-        //		'selected_method_of_payment' => $this->checkout->selected_method_of_payment,
-        //		'payment_method' => $this->checkout->payment_method,
-        //	),
-        //	true
-        //);
-        // verify TXN
-        if ($this->checkout->transaction instanceof EE_Transaction) {
-            $gateway = $this->checkout->payment_method->type_obj()->get_gateway();
-            if (! $gateway instanceof EE_Offsite_Gateway) {
-                $this->checkout->continue_reg = false;
-                return false;
-            }
-            $payment = $this->_process_off_site_payment($gateway);
-            $payment = $this->_process_cancelled_payments($payment);
-            $payment = $this->_validate_payment($payment);
-            // if payment was not declined by the payment gateway or cancelled by the registrant
-            if ($this->_process_payment_status($payment, EE_PMT_Base::offsite)) {
-                //$this->_setup_redirect_for_next_step();
-                // store that for later
-                $this->checkout->payment = $payment;
-                // mark this reg step as completed, as long as gateway doesn't use a separate IPN request,
-                // because we will complete this step during the IPN processing then
-                if ($gateway instanceof EE_Offsite_Gateway && ! $this->handle_IPN_in_this_request()) {
-                    $this->set_completed();
-                }
-                return true;
-            }
-        }
-        // DEBUG LOG
-        //$this->checkout->log( __CLASS__, __FUNCTION__, __LINE__,
-        //	array( 'payment' => $payment )
-        //);
-        $this->checkout->continue_reg = false;
-        return false;
-    }
-
-
-    /**
-     * _validate_return
-     *
-     * @access private
-     * @return void
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws \EventEspresso\core\exceptions\InvalidDataTypeException
-     * @throws \EventEspresso\core\exceptions\InvalidInterfaceException
-     * @throws \EventEspresso\core\exceptions\InvalidSessionDataException
-     */
-    private function _validate_offsite_return()
-    {
-        $TXN_ID = (int)EE_Registry::instance()->REQ->get('spco_txn', 0);
-        if ($TXN_ID !== $this->checkout->transaction->ID()) {
-            // Houston... we might have a problem
-            $invalid_TXN = false;
-            // first gather some info
-            $valid_TXN          = EEM_Transaction::instance()->get_one_by_ID($TXN_ID);
-            $primary_registrant = $valid_TXN instanceof EE_Transaction
-                ? $valid_TXN->primary_registration()
-                : null;
-            // let's start by retrieving the cart for this TXN
-            $cart = $this->checkout->get_cart_for_transaction($this->checkout->transaction);
-            if ($cart instanceof EE_Cart) {
-                // verify that the current cart has tickets
-                $tickets = $cart->get_tickets();
-                if (empty($tickets)) {
-                    $invalid_TXN = true;
-                }
-            } else {
-                $invalid_TXN = true;
-            }
-            $valid_TXN_SID = $primary_registrant instanceof EE_Registration
-                ? $primary_registrant->session_ID()
-                : null;
-            // validate current Session ID and compare against valid TXN session ID
-            if (
-                $invalid_TXN // if this is already true, then skip other checks
-                || EE_Session::instance()->id() === null
-                || (
-                    // WARNING !!!
-                    // this could be PayPal sending back duplicate requests (ya they do that)
-                    // or it **could** mean someone is simply registering AGAIN after having just done so
-                    // so now we need to determine if this current TXN looks valid or not
-                    // and whether this reg step has even been started ?
-                    EE_Session::instance()->id() === $valid_TXN_SID
-                    // really? you're half way through this reg step, but you never started it ?
-                    && $this->checkout->transaction->reg_step_completed($this->slug()) === false
-                )
-            ) {
-                $invalid_TXN = true;
-            }
-            if ($invalid_TXN) {
-                // is the valid TXN completed ?
-                if ($valid_TXN instanceof EE_Transaction) {
-                    // has this step even been started ?
-                    $reg_step_completed = $valid_TXN->reg_step_completed($this->slug());
-                    if ($reg_step_completed !== false && $reg_step_completed !== true) {
-                        // so it **looks** like this is a double request from PayPal
-                        // so let's try to pick up where we left off
-                        $this->checkout->transaction = $valid_TXN;
-                        $this->checkout->refresh_all_entities(true);
-                        return;
-                    }
-                }
-                // you appear to be lost?
-                $this->_redirect_wayward_request($primary_registrant);
-            }
-        }
-    }
-
-
-    /**
-     * _redirect_wayward_request
-     *
-     * @access private
-     * @param \EE_Registration|null $primary_registrant
-     * @return bool
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws \EventEspresso\core\exceptions\InvalidDataTypeException
-     * @throws \EventEspresso\core\exceptions\InvalidInterfaceException
-     */
-    private function _redirect_wayward_request(EE_Registration $primary_registrant)
-    {
-        if (! $primary_registrant instanceof EE_Registration) {
-            // try redirecting based on the current TXN
-            $primary_registrant = $this->checkout->transaction instanceof EE_Transaction
-                ? $this->checkout->transaction->primary_registration()
-                : null;
-        }
-        if (! $primary_registrant instanceof EE_Registration) {
-            EE_Error::add_error(
-                sprintf(
-                    esc_html__(
-                        'Invalid information was received from the Off-Site Payment Processor and your Transaction details could not be retrieved from the database.%1$sPlease try again or contact %2$s for assistance.',
-                        'event_espresso'
-                    ),
-                    '<br/>',
-                    EE_Registry::instance()->CFG->organization->get_pretty('email')
-                ),
-                __FILE__,
-                __FUNCTION__,
-                __LINE__
-            );
-            return false;
-        }
-        // make sure transaction is not locked
-        $this->checkout->transaction->unlock();
-        wp_safe_redirect(
-            add_query_arg(
-                array(
-                    'e_reg_url_link' => $primary_registrant->reg_url_link(),
-                ),
-                $this->checkout->thank_you_page_url
-            )
-        );
-        exit();
-    }
-
-
-    /**
-     * _process_off_site_payment
-     *
-     * @access private
-     * @param \EE_Offsite_Gateway $gateway
-     * @return EE_Payment
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws \EventEspresso\core\exceptions\InvalidDataTypeException
-     * @throws \EventEspresso\core\exceptions\InvalidInterfaceException
-     */
-    private function _process_off_site_payment(EE_Offsite_Gateway $gateway)
-    {
-        try {
-            $request_data = \EE_Registry::instance()->REQ->params();
-            // if gateway uses_separate_IPN_request, then we don't have to process the IPN manually
-            $this->set_handle_IPN_in_this_request(
-                $gateway->handle_IPN_in_this_request($request_data, false)
-            );
-            if ($this->handle_IPN_in_this_request()) {
-                // get payment details and process results
-                /** @type EE_Payment_Processor $payment_processor */
-                $payment_processor = EE_Registry::instance()->load_core('Payment_Processor');
-                $payment           = $payment_processor->process_ipn(
-                    $request_data,
-                    $this->checkout->transaction,
-                    $this->checkout->payment_method,
-                    true,
-                    false
-                );
-                //$payment_source = 'process_ipn';
-            } else {
-                $payment = $this->checkout->transaction->last_payment();
-                //$payment_source = 'last_payment';
-            }
-        } catch (Exception $e) {
-            // let's just eat the exception and try to move on using any previously set payment info
-            $payment = $this->checkout->transaction->last_payment();
-            //$payment_source = 'last_payment after Exception';
-            // but if we STILL don't have a payment object
-            if (! $payment instanceof EE_Payment) {
-                // then we'll object ! ( not object like a thing... but object like what a lawyer says ! )
-                $this->_handle_payment_processor_exception($e);
-            }
-        }
-        // DEBUG LOG
-        //$this->checkout->log( __CLASS__, __FUNCTION__, __LINE__,
-        //	array(
-        //		'process_ipn_payment' => $payment,
-        //		'payment_source'      => $payment_source,
-        //	)
-        //);
-        return $payment;
-    }
-
-
-    /**
-     * _process_cancelled_payments
-     * just makes sure that the payment status gets updated correctly
-     * so tha tan error isn't generated during payment validation
-     *
-     * @access private
-     * @param EE_Payment $payment
-     * @return EE_Payment | FALSE
-     * @throws \EE_Error
-     */
-    private function _process_cancelled_payments($payment = null)
-    {
-        if (
-            $payment instanceof EE_Payment
-            && isset($_REQUEST['ee_cancel_payment'])
-            && $payment->status() === EEM_Payment::status_id_failed
-        ) {
-            $payment->set_status(EEM_Payment::status_id_cancelled);
-        }
-        return $payment;
-    }
-
-
-    /**
-     *    get_transaction_details_for_gateways
-     *
-     * @access    public
-     * @return int
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws ReflectionException
-     * @throws \EventEspresso\core\exceptions\InvalidDataTypeException
-     * @throws \EventEspresso\core\exceptions\InvalidInterfaceException
-     */
-    public function get_transaction_details_for_gateways()
-    {
-        $txn_details = array();
-        // ya gotta make a choice man
-        if (empty($this->checkout->selected_method_of_payment)) {
-            $txn_details = array(
-                'error' => esc_html__('Please select a method of payment before proceeding.', 'event_espresso'),
-            );
-        }
-        // get EE_Payment_Method object
-        if (
-            empty($txn_details)
-            &&
-            ! $this->checkout->payment_method = $this->_get_payment_method_for_selected_method_of_payment()
-        ) {
-            $txn_details = array(
-                'selected_method_of_payment' => $this->checkout->selected_method_of_payment,
-                'error'                      => esc_html__(
-                    'A valid Payment Method could not be determined.',
-                    'event_espresso'
-                ),
-            );
-        }
-        if (empty($txn_details) && $this->checkout->transaction instanceof EE_Transaction) {
-            $return_url  = $this->_get_return_url($this->checkout->payment_method);
-            $txn_details = array(
-                'TXN_ID'         => $this->checkout->transaction->ID(),
-                'TXN_timestamp'  => $this->checkout->transaction->datetime(),
-                'TXN_total'      => $this->checkout->transaction->total(),
-                'TXN_paid'       => $this->checkout->transaction->paid(),
-                'TXN_reg_steps'  => $this->checkout->transaction->reg_steps(),
-                'STS_ID'         => $this->checkout->transaction->status_ID(),
-                'PMD_ID'         => $this->checkout->transaction->payment_method_ID(),
-                'payment_amount' => $this->checkout->amount_owing,
-                'return_url'     => $return_url,
-                'cancel_url'     => add_query_arg(array('ee_cancel_payment' => true), $return_url),
-                'notify_url'     => EE_Config::instance()->core->txn_page_url(
-                    array(
-                        'e_reg_url_link'    => $this->checkout->transaction->primary_registration()->reg_url_link(),
-                        'ee_payment_method' => $this->checkout->payment_method->slug(),
-                    )
-                ),
-            );
-        }
-        echo wp_json_encode($txn_details);
-        exit();
-    }
-
-
-    /**
-     *    __sleep
-     * to conserve db space, let's remove the reg_form and the EE_Checkout object from EE_SPCO_Reg_Step objects upon
-     * serialization EE_Checkout will handle the reimplementation of itself upon waking, but we won't bother with the
-     * reg form, because if needed, it will be regenerated anyways
-     *
-     * @return array
-     */
-    public function __sleep()
-    {
-        // remove the reg form and the checkout
-        return array_diff(array_keys(get_object_vars($this)), array('reg_form', 'checkout', 'line_item_display'));
-    }
+	/**
+	 * @access protected
+	 * @var EE_Line_Item_Display $Line_Item_Display
+	 */
+	protected $line_item_display;
+
+	/**
+	 * @access protected
+	 * @var boolean $handle_IPN_in_this_request
+	 */
+	protected $handle_IPN_in_this_request = false;
+
+
+	/**
+	 *    set_hooks - for hooking into EE Core, other modules, etc
+	 *
+	 * @access    public
+	 * @return    void
+	 */
+	public static function set_hooks()
+	{
+		add_filter(
+			'FHEE__SPCO__EE_Line_Item_Filter_Collection',
+			array('EE_SPCO_Reg_Step_Payment_Options', 'add_spco_line_item_filters')
+		);
+		add_action(
+			'wp_ajax_switch_spco_billing_form',
+			array('EE_SPCO_Reg_Step_Payment_Options', 'switch_spco_billing_form')
+		);
+		add_action(
+			'wp_ajax_nopriv_switch_spco_billing_form',
+			array('EE_SPCO_Reg_Step_Payment_Options', 'switch_spco_billing_form')
+		);
+		add_action('wp_ajax_save_payer_details', array('EE_SPCO_Reg_Step_Payment_Options', 'save_payer_details'));
+		add_action(
+			'wp_ajax_nopriv_save_payer_details',
+			array('EE_SPCO_Reg_Step_Payment_Options', 'save_payer_details')
+		);
+		add_action(
+			'wp_ajax_get_transaction_details_for_gateways',
+			array('EE_SPCO_Reg_Step_Payment_Options', 'get_transaction_details')
+		);
+		add_action(
+			'wp_ajax_nopriv_get_transaction_details_for_gateways',
+			array('EE_SPCO_Reg_Step_Payment_Options', 'get_transaction_details')
+		);
+		add_filter(
+			'FHEE__EED_Recaptcha___bypass_recaptcha__bypass_request_params_array',
+			array('EE_SPCO_Reg_Step_Payment_Options', 'bypass_recaptcha_for_load_payment_method'),
+			10,
+			1
+		);
+	}
+
+
+	/**
+	 *    ajax switch_spco_billing_form
+	 *
+	 * @throws \EE_Error
+	 */
+	public static function switch_spco_billing_form()
+	{
+		EED_Single_Page_Checkout::process_ajax_request('switch_payment_method');
+	}
+
+
+	/**
+	 *    ajax save_payer_details
+	 *
+	 * @throws \EE_Error
+	 */
+	public static function save_payer_details()
+	{
+		EED_Single_Page_Checkout::process_ajax_request('save_payer_details_via_ajax');
+	}
+
+
+	/**
+	 *    ajax get_transaction_details
+	 *
+	 * @throws \EE_Error
+	 */
+	public static function get_transaction_details()
+	{
+		EED_Single_Page_Checkout::process_ajax_request('get_transaction_details_for_gateways');
+	}
+
+
+	/**
+	 * bypass_recaptcha_for_load_payment_method
+	 *
+	 * @access public
+	 * @return array
+	 * @throws InvalidArgumentException
+	 * @throws \EventEspresso\core\exceptions\InvalidDataTypeException
+	 * @throws \EventEspresso\core\exceptions\InvalidInterfaceException
+	 */
+	public static function bypass_recaptcha_for_load_payment_method()
+	{
+		return array(
+			'EESID'  => EE_Registry::instance()->SSN->id(),
+			'step'   => 'payment_options',
+			'action' => 'spco_billing_form',
+		);
+	}
+
+
+	/**
+	 *    class constructor
+	 *
+	 * @access    public
+	 * @param    EE_Checkout $checkout
+	 */
+	public function __construct(EE_Checkout $checkout)
+	{
+		$this->_slug     = 'payment_options';
+		$this->_name     = esc_html__('Payment Options', 'event_espresso');
+		$this->_template = SPCO_REG_STEPS_PATH . $this->_slug . DS . 'payment_options_main.template.php';
+		$this->checkout  = $checkout;
+		$this->_reset_success_message();
+		$this->set_instructions(
+			esc_html__(
+				'Please select a method of payment and provide any necessary billing information before proceeding.',
+				'event_espresso'
+			)
+		);
+	}
+
+
+	/**
+	 * @return null
+	 */
+	public function line_item_display()
+	{
+		return $this->line_item_display;
+	}
+
+
+	/**
+	 * @param null $line_item_display
+	 */
+	public function set_line_item_display($line_item_display)
+	{
+		$this->line_item_display = $line_item_display;
+	}
+
+
+	/**
+	 * @return boolean
+	 */
+	public function handle_IPN_in_this_request()
+	{
+		return $this->handle_IPN_in_this_request;
+	}
+
+
+	/**
+	 * @param boolean $handle_IPN_in_this_request
+	 */
+	public function set_handle_IPN_in_this_request($handle_IPN_in_this_request)
+	{
+		$this->handle_IPN_in_this_request = filter_var($handle_IPN_in_this_request, FILTER_VALIDATE_BOOLEAN);
+	}
+
+
+	/**
+	 * translate_js_strings
+	 *
+	 * @return void
+	 */
+	public function translate_js_strings()
+	{
+		EE_Registry::$i18n_js_strings['no_payment_method']      = esc_html__(
+			'Please select a method of payment in order to continue.',
+			'event_espresso'
+		);
+		EE_Registry::$i18n_js_strings['invalid_payment_method'] = esc_html__(
+			'A valid method of payment could not be determined. Please refresh the page and try again.',
+			'event_espresso'
+		);
+		EE_Registry::$i18n_js_strings['forwarding_to_offsite']  = esc_html__(
+			'Forwarding to Secure Payment Provider.',
+			'event_espresso'
+		);
+	}
+
+
+	/**
+	 * enqueue_styles_and_scripts
+	 *
+	 * @return void
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws \EventEspresso\core\exceptions\InvalidDataTypeException
+	 * @throws \EventEspresso\core\exceptions\InvalidInterfaceException
+	 */
+	public function enqueue_styles_and_scripts()
+	{
+		$transaction = $this->checkout->transaction;
+		//if the transaction isn't set or nothing is owed on it, don't enqueue any JS
+		if (! $transaction instanceof EE_Transaction || EEH_Money::compare_floats($transaction->remaining(), 0)) {
+			return;
+		}
+		foreach (EEM_Payment_Method::instance()->get_all_for_transaction($transaction, EEM_Payment_Method::scope_cart) as $payment_method) {
+			$type_obj = $payment_method->type_obj();
+			if ($type_obj instanceof EE_PMT_Base) {
+				$billing_form = $type_obj->generate_new_billing_form($transaction);
+				if ($billing_form instanceof EE_Form_Section_Proper) {
+					$billing_form->enqueue_js();
+				}
+			}
+		}
+	}
+
+
+	/**
+	 * initialize_reg_step
+	 *
+	 * @return bool
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws ReflectionException
+	 * @throws \EventEspresso\core\exceptions\InvalidDataTypeException
+	 * @throws \EventEspresso\core\exceptions\InvalidInterfaceException
+	 */
+	public function initialize_reg_step()
+	{
+		// TODO: if /when we implement donations, then this will need overriding
+		if (// don't need payment options for:
+			// 	registrations made via the admin
+			// 	completed transactions
+			// 	overpaid transactions
+			// 	$ 0.00 transactions (no payment required)
+			! $this->checkout->payment_required()
+			// but do NOT remove if current action being called belongs to this reg step
+			&& ! is_callable(array($this, $this->checkout->action))
+			&& ! $this->completed()
+		) {
+			// and if so, then we no longer need the Payment Options step
+			if ($this->is_current_step()) {
+				$this->checkout->generate_reg_form = false;
+			}
+			$this->checkout->remove_reg_step($this->_slug);
+			// DEBUG LOG
+			//$this->checkout->log( __CLASS__, __FUNCTION__, __LINE__ );
+			return false;
+		}
+		// load EEM_Payment_Method
+		EE_Registry::instance()->load_model('Payment_Method');
+		// get all active payment methods
+		$this->checkout->available_payment_methods = EEM_Payment_Method::instance()->get_all_for_transaction(
+			$this->checkout->transaction,
+			EEM_Payment_Method::scope_cart
+		);
+		return true;
+	}
+
+
+	/**
+	 * @return EE_Form_Section_Proper
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws ReflectionException
+	 * @throws \EventEspresso\core\exceptions\EntityNotFoundException
+	 * @throws \EventEspresso\core\exceptions\InvalidDataTypeException
+	 * @throws \EventEspresso\core\exceptions\InvalidInterfaceException
+	 * @throws \EventEspresso\core\exceptions\InvalidStatusException
+	 */
+	public function generate_reg_form()
+	{
+		// reset in case someone changes their mind
+		$this->_reset_selected_method_of_payment();
+		// set some defaults
+		$this->checkout->selected_method_of_payment = 'payments_closed';
+		$registrations_requiring_payment            = array();
+		$registrations_for_free_events              = array();
+		$registrations_requiring_pre_approval       = array();
+		$sold_out_events                            = array();
+		$insufficient_spaces_available              = array();
+		$no_payment_required                        = true;
+		// loop thru registrations to gather info
+		$registrations         = $this->checkout->transaction->registrations($this->checkout->reg_cache_where_params);
+		$ejected_registrations = EE_SPCO_Reg_Step_Payment_Options::find_registrations_that_lost_their_space(
+			$registrations,
+			$this->checkout->revisit
+		);
+		foreach ($registrations as $REG_ID => $registration) {
+			/** @var $registration EE_Registration */
+			// has this registration lost it's space ?
+			if (isset($ejected_registrations[ $REG_ID ])) {
+				if ($registration->event()->is_sold_out() || $registration->event()->is_sold_out(true)) {
+					$sold_out_events[ $registration->event()->ID() ] = $registration->event();
+				} else {
+					$insufficient_spaces_available[ $registration->event()->ID() ] = $registration->event();
+				}
+				continue;
+			}
+			// event requires admin approval
+			if ($registration->status_ID() === EEM_Registration::status_id_not_approved) {
+				// add event to list of events with pre-approval reg status
+				$registrations_requiring_pre_approval[$REG_ID] = $registration;
+				do_action(
+					'AHEE__EE_SPCO_Reg_Step_Payment_Options__generate_reg_form__event_requires_pre_approval',
+					$registration->event(),
+					$this
+				);
+				continue;
+			}
+			if ($this->checkout->revisit
+				&& $registration->status_ID() !== EEM_Registration::status_id_approved
+				&& (
+					$registration->event()->is_sold_out()
+					|| $registration->event()->is_sold_out(true)
+				)
+			) {
+				// add event to list of events that are sold out
+				$sold_out_events[$registration->event()->ID()] = $registration->event();
+				do_action(
+					'AHEE__EE_SPCO_Reg_Step_Payment_Options__generate_reg_form__sold_out_event',
+					$registration->event(),
+					$this
+				);
+				continue;
+			}
+			// are they allowed to pay now and is there monies owing?
+			if ($registration->owes_monies_and_can_pay()) {
+				$registrations_requiring_payment[$REG_ID] = $registration;
+				do_action(
+					'AHEE__EE_SPCO_Reg_Step_Payment_Options__generate_reg_form__event_requires_payment',
+					$registration->event(),
+					$this
+				);
+			} elseif (! $this->checkout->revisit
+				&& $registration->status_ID() !== EEM_Registration::status_id_not_approved
+				&& $registration->ticket()->is_free()
+			) {
+				$registrations_for_free_events[$registration->event()->ID()] = $registration;
+			}
+		}
+		$subsections = array();
+		// now decide which template to load
+		if (! empty($sold_out_events)) {
+			$subsections['sold_out_events'] = $this->_sold_out_events($sold_out_events);
+		}
+		if (! empty($insufficient_spaces_available)) {
+			$subsections['insufficient_space'] = $this->_insufficient_spaces_available(
+				$insufficient_spaces_available
+			);
+		}
+		if (! empty($registrations_requiring_pre_approval)) {
+			$subsections['registrations_requiring_pre_approval'] = $this->_registrations_requiring_pre_approval(
+				$registrations_requiring_pre_approval
+			);
+		}
+		if (! empty($registrations_for_free_events)) {
+			$subsections['no_payment_required'] = $this->_no_payment_required($registrations_for_free_events);
+		}
+		if (! empty($registrations_requiring_payment)) {
+			if ($this->checkout->amount_owing > 0) {
+				// autoload Line_Item_Display classes
+				EEH_Autoloader::register_line_item_filter_autoloaders();
+				$line_item_filter_processor = new EE_Line_Item_Filter_Processor(
+					apply_filters(
+						'FHEE__SPCO__EE_Line_Item_Filter_Collection',
+						new EE_Line_Item_Filter_Collection()
+					),
+					$this->checkout->cart->get_grand_total()
+				);
+				/** @var EE_Line_Item $filtered_line_item_tree */
+				$filtered_line_item_tree = $line_item_filter_processor->process();
+				EEH_Autoloader::register_line_item_display_autoloaders();
+				$this->set_line_item_display(new EE_Line_Item_Display('spco'));
+				$subsections['payment_options'] = $this->_display_payment_options(
+					$this->line_item_display->display_line_item(
+						$filtered_line_item_tree,
+						array('registrations' => $registrations)
+					)
+				);
+				$this->checkout->amount_owing   = $filtered_line_item_tree->total();
+				$this->_apply_registration_payments_to_amount_owing($registrations);
+			}
+			$no_payment_required = false;
+		} else {
+			$this->_hide_reg_step_submit_button_if_revisit();
+		}
+		$this->_save_selected_method_of_payment();
+
+		$subsections['default_hidden_inputs'] = $this->reg_step_hidden_inputs();
+		$subsections['extra_hidden_inputs']   = $this->_extra_hidden_inputs($no_payment_required);
+
+		return new EE_Form_Section_Proper(
+			array(
+				'name'            => $this->reg_form_name(),
+				'html_id'         => $this->reg_form_name(),
+				'subsections'     => $subsections,
+				'layout_strategy' => new EE_No_Layout(),
+			)
+		);
+	}
+
+
+	/**
+	 * add line item filters required for this reg step
+	 * these filters are applied via this line in EE_SPCO_Reg_Step_Payment_Options::set_hooks():
+	 *        add_filter( 'FHEE__SPCO__EE_Line_Item_Filter_Collection', array( 'EE_SPCO_Reg_Step_Payment_Options',
+	 *        'add_spco_line_item_filters' ) ); so any code that wants to use the same set of filters during the
+	 *        payment options reg step, can apply these filters via the following: apply_filters(
+	 *        'FHEE__SPCO__EE_Line_Item_Filter_Collection', new EE_Line_Item_Filter_Collection() ) or to an existing
+	 *        filter collection by passing that instead of instantiating a new collection
+	 *
+	 * @param \EE_Line_Item_Filter_Collection $line_item_filter_collection
+	 * @return EE_Line_Item_Filter_Collection
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws ReflectionException
+	 * @throws \EventEspresso\core\exceptions\EntityNotFoundException
+	 * @throws \EventEspresso\core\exceptions\InvalidDataTypeException
+	 * @throws \EventEspresso\core\exceptions\InvalidInterfaceException
+	 * @throws \EventEspresso\core\exceptions\InvalidStatusException
+	 */
+	public static function add_spco_line_item_filters(EE_Line_Item_Filter_Collection $line_item_filter_collection)
+	{
+		if (! EE_Registry::instance()->SSN instanceof EE_Session) {
+			return $line_item_filter_collection;
+		}
+		if (! EE_Registry::instance()->SSN->checkout() instanceof EE_Checkout) {
+			return $line_item_filter_collection;
+		}
+		if (! EE_Registry::instance()->SSN->checkout()->transaction instanceof EE_Transaction) {
+			return $line_item_filter_collection;
+		}
+		$line_item_filter_collection->add(
+			new EE_Billable_Line_Item_Filter(
+				EE_SPCO_Reg_Step_Payment_Options::remove_ejected_registrations(
+					EE_Registry::instance()->SSN->checkout()->transaction->registrations(
+						EE_Registry::instance()->SSN->checkout()->reg_cache_where_params
+					)
+				)
+			)
+		);
+		$line_item_filter_collection->add(new EE_Non_Zero_Line_Item_Filter());
+		return $line_item_filter_collection;
+	}
+
+
+	/**
+	 * remove_ejected_registrations
+	 * if a registrant has lost their potential space at an event due to lack of payment,
+	 * then this method removes them from the list of registrations being paid for during this request
+	 *
+	 * @param \EE_Registration[] $registrations
+	 * @return EE_Registration[]
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws ReflectionException
+	 * @throws \EventEspresso\core\exceptions\EntityNotFoundException
+	 * @throws \EventEspresso\core\exceptions\InvalidDataTypeException
+	 * @throws \EventEspresso\core\exceptions\InvalidInterfaceException
+	 * @throws \EventEspresso\core\exceptions\InvalidStatusException
+	 */
+	public static function remove_ejected_registrations(array $registrations)
+	{
+		$ejected_registrations = EE_SPCO_Reg_Step_Payment_Options::find_registrations_that_lost_their_space(
+			$registrations,
+			EE_Registry::instance()->SSN->checkout()->revisit
+		);
+		foreach ($registrations as $REG_ID => $registration) {
+			// has this registration lost it's space ?
+			if (isset($ejected_registrations[$REG_ID])) {
+				unset($registrations[$REG_ID]);
+				continue;
+			}
+		}
+		return $registrations;
+	}
+
+
+	/**
+	 * find_registrations_that_lost_their_space
+	 * If a registrant chooses an offline payment method like Invoice,
+	 * then no space is reserved for them at the event until they fully pay fo that site
+	 * (unless the event's default reg status is set to APPROVED)
+	 * if a registrant then later returns to pay, but the number of spaces available has been reduced due to sales,
+	 * then this method will determine which registrations have lost the ability to complete the reg process.
+	 *
+	 * @param \EE_Registration[] $registrations
+	 * @param bool               $revisit
+	 * @return array
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws ReflectionException
+	 * @throws \EventEspresso\core\exceptions\EntityNotFoundException
+	 * @throws \EventEspresso\core\exceptions\InvalidDataTypeException
+	 * @throws \EventEspresso\core\exceptions\InvalidInterfaceException
+	 * @throws \EventEspresso\core\exceptions\InvalidStatusException
+	 */
+	public static function find_registrations_that_lost_their_space(array $registrations, $revisit = false)
+	{
+		// registrations per event
+		$event_reg_count = array();
+		// spaces left per event
+		$event_spaces_remaining = array();
+		// tickets left sorted by ID
+		$tickets_remaining = array();
+		// registrations that have lost their space
+		$ejected_registrations = array();
+		foreach ($registrations as $REG_ID => $registration) {
+			if ($registration->status_ID() === EEM_Registration::status_id_approved
+				|| apply_filters(
+					'FHEE__EE_SPCO_Reg_Step_Payment_Options__find_registrations_that_lost_their_space__allow_reg_payment',
+					false,
+					$registration,
+					$revisit
+				)
+			) {
+				continue;
+			}
+			$EVT_ID = $registration->event_ID();
+			$ticket = $registration->ticket();
+			if (! isset($tickets_remaining[$ticket->ID()])) {
+				$tickets_remaining[$ticket->ID()] = $ticket->remaining();
+			}
+			if ($tickets_remaining[$ticket->ID()] > 0) {
+				if (! isset($event_reg_count[$EVT_ID])) {
+					$event_reg_count[$EVT_ID] = 0;
+				}
+				$event_reg_count[$EVT_ID]++;
+				if (! isset($event_spaces_remaining[$EVT_ID])) {
+					$event_spaces_remaining[$EVT_ID] = $registration->event()->spaces_remaining_for_sale();
+				}
+			}
+			if ($revisit
+				&& ($tickets_remaining[$ticket->ID()] === 0
+					|| $event_reg_count[$EVT_ID] > $event_spaces_remaining[$EVT_ID]
+				)
+			) {
+				$ejected_registrations[$REG_ID] = $registration->event();
+				if ($registration->status_ID() !== EEM_Registration::status_id_wait_list) {
+					/** @type EE_Registration_Processor $registration_processor */
+					$registration_processor = EE_Registry::instance()->load_class('Registration_Processor');
+					// at this point, we should have enough details about the registrant to consider the registration
+					// NOT incomplete
+					$registration_processor->manually_update_registration_status(
+						$registration,
+						EEM_Registration::status_id_wait_list
+					);
+				}
+			}
+		}
+		return $ejected_registrations;
+	}
+
+
+	/**
+	 * _hide_reg_step_submit_button
+	 * removes the html for the reg step submit button
+	 * by replacing it with an empty string via filter callback
+	 *
+	 * @return void
+	 */
+	protected function _adjust_registration_status_if_event_old_sold()
+	{
+	}
+
+
+	/**
+	 * _hide_reg_step_submit_button
+	 * removes the html for the reg step submit button
+	 * by replacing it with an empty string via filter callback
+	 *
+	 * @return void
+	 */
+	protected function _hide_reg_step_submit_button_if_revisit()
+	{
+		if ($this->checkout->revisit) {
+			add_filter('FHEE__EE_SPCO_Reg_Step__reg_step_submit_button__sbmt_btn_html', '__return_empty_string');
+		}
+	}
+
+
+	/**
+	 * sold_out_events
+	 * displays notices regarding events that have sold out since hte registrant first signed up
+	 *
+	 * @param \EE_Event[] $sold_out_events_array
+	 * @return \EE_Form_Section_Proper
+	 * @throws \EE_Error
+	 */
+	private function _sold_out_events($sold_out_events_array = array())
+	{
+		// set some defaults
+		$this->checkout->selected_method_of_payment = 'events_sold_out';
+		$sold_out_events                            = '';
+		foreach ($sold_out_events_array as $sold_out_event) {
+			$sold_out_events .= EEH_HTML::li(
+				EEH_HTML::span(
+					'  ' . $sold_out_event->name(),
+					'',
+					'dashicons dashicons-marker ee-icon-size-16 pink-text'
+				)
+			);
+		}
+		return new EE_Form_Section_Proper(
+			array(
+				'layout_strategy' => new EE_Template_Layout(
+					array(
+						'layout_template_file' => SPCO_REG_STEPS_PATH
+												  . $this->_slug
+												  . DS
+												  . 'sold_out_events.template.php',
+						'template_args'        => apply_filters(
+							'FHEE__EE_SPCO_Reg_Step_Payment_Options___sold_out_events__template_args',
+							array(
+								'sold_out_events'     => $sold_out_events,
+								'sold_out_events_msg' => apply_filters(
+									'FHEE__EE_SPCO_Reg_Step_Payment_Options___sold_out_events__sold_out_events_msg',
+									sprintf(
+										esc_html__(
+											'It appears that the event you were about to make a payment for has sold out since you first registered. If you have already made a partial payment towards this event, please contact the event administrator for a refund.%3$s%3$s%1$sPlease note that availability can change at any time due to cancellations, so please check back again later if registration for this event(s) is important to you.%2$s',
+											'event_espresso'
+										),
+										'<strong>',
+										'</strong>',
+										'<br />'
+									)
+								),
+							)
+						),
+					)
+				),
+			)
+		);
+	}
+
+
+	/**
+	 * _insufficient_spaces_available
+	 * displays notices regarding events that do not have enough remaining spaces
+	 * to satisfy the current number of registrations looking to pay
+	 *
+	 * @param \EE_Event[] $insufficient_spaces_events_array
+	 * @return \EE_Form_Section_Proper
+	 * @throws \EE_Error
+	 */
+	private function _insufficient_spaces_available($insufficient_spaces_events_array = array())
+	{
+		// set some defaults
+		$this->checkout->selected_method_of_payment = 'invoice';
+		$insufficient_space_events                  = '';
+		foreach ($insufficient_spaces_events_array as $event) {
+			if ($event instanceof EE_Event) {
+				$insufficient_space_events .= EEH_HTML::li(
+					EEH_HTML::span(' ' . $event->name(), '', 'dashicons dashicons-marker ee-icon-size-16 pink-text')
+				);
+			}
+		}
+		return new EE_Form_Section_Proper(
+			array(
+				'subsections'     => array(
+					'default_hidden_inputs' => $this->reg_step_hidden_inputs(),
+					'extra_hidden_inputs'   => $this->_extra_hidden_inputs(),
+				),
+				'layout_strategy' => new EE_Template_Layout(
+					array(
+						'layout_template_file' => SPCO_REG_STEPS_PATH
+												  . $this->_slug
+												  . DS
+												  . 'sold_out_events.template.php',
+						'template_args'        => apply_filters(
+							'FHEE__EE_SPCO_Reg_Step_Payment_Options___insufficient_spaces_available__template_args',
+							array(
+								'sold_out_events'     => $insufficient_space_events,
+								'sold_out_events_msg' => apply_filters(
+									'FHEE__EE_SPCO_Reg_Step_Payment_Options___insufficient_spaces_available__insufficient_space_msg',
+									esc_html__(
+										'It appears that the event you were about to make a payment for has sold additional tickets since you first registered, and there are no longer enough spaces left to accommodate your selections. You may continue to pay and secure the available space(s) remaining, or simply cancel if you no longer wish to purchase. If you have already made a partial payment towards this event, please contact the event administrator for a refund.',
+										'event_espresso'
+									)
+								),
+							)
+						),
+					)
+				),
+			)
+		);
+	}
+
+
+	/**
+	 * registrations_requiring_pre_approval
+	 *
+	 * @param array $registrations_requiring_pre_approval
+	 * @return EE_Form_Section_Proper
+	 * @throws EE_Error
+	 * @throws \EventEspresso\core\exceptions\EntityNotFoundException
+	 */
+	private function _registrations_requiring_pre_approval($registrations_requiring_pre_approval = array())
+	{
+		$events_requiring_pre_approval = '';
+		foreach ($registrations_requiring_pre_approval as $registration) {
+			if ($registration instanceof EE_Registration && $registration->event() instanceof EE_Event) {
+				$events_requiring_pre_approval[$registration->event()->ID()] = EEH_HTML::li(
+					EEH_HTML::span(
+						'',
+						'',
+						'dashicons dashicons-marker ee-icon-size-16 orange-text'
+					)
+					. EEH_HTML::span($registration->event()->name(), '', 'orange-text')
+				);
+			}
+		}
+		return new EE_Form_Section_Proper(
+			array(
+				'layout_strategy' => new EE_Template_Layout(
+					array(
+						'layout_template_file' => SPCO_REG_STEPS_PATH
+												  . $this->_slug
+												  . DS
+												  . 'events_requiring_pre_approval.template.php', // layout_template
+						'template_args'        => apply_filters(
+							'FHEE__EE_SPCO_Reg_Step_Payment_Options___sold_out_events__template_args',
+							array(
+								'events_requiring_pre_approval'     => implode('', $events_requiring_pre_approval),
+								'events_requiring_pre_approval_msg' => apply_filters(
+									'FHEE__EE_SPCO_Reg_Step_Payment_Options___events_requiring_pre_approval__events_requiring_pre_approval_msg',
+									esc_html__(
+										'The following events do not require payment at this time and will not be billed during this transaction. Billing will only occur after the attendee has been approved by the event organizer. You will be notified when your registration has been processed. If this is a free event, then no billing will occur.',
+										'event_espresso'
+									)
+								),
+							)
+						),
+					)
+				),
+			)
+		);
+	}
+
+
+	/**
+	 * _no_payment_required
+	 *
+	 * @param \EE_Event[] $registrations_for_free_events
+	 * @return \EE_Form_Section_Proper
+	 * @throws \EE_Error
+	 */
+	private function _no_payment_required($registrations_for_free_events = array())
+	{
+		// set some defaults
+		$this->checkout->selected_method_of_payment = 'no_payment_required';
+		// generate no_payment_required form
+		return new EE_Form_Section_Proper(
+			array(
+				'layout_strategy' => new EE_Template_Layout(
+					array(
+						'layout_template_file' => SPCO_REG_STEPS_PATH
+												  . $this->_slug
+												  . DS
+												  . 'no_payment_required.template.php', // layout_template
+						'template_args'        => apply_filters(
+							'FHEE__EE_SPCO_Reg_Step_Payment_Options___no_payment_required__template_args',
+							array(
+								'revisit'                       => $this->checkout->revisit,
+								'registrations'                 => array(),
+								'ticket_count'                  => array(),
+								'registrations_for_free_events' => $registrations_for_free_events,
+								'no_payment_required_msg'       => EEH_HTML::p(
+									esc_html__('This is a free event, so no billing will occur.', 'event_espresso')
+								),
+							)
+						),
+					)
+				),
+			)
+		);
+	}
+
+
+	/**
+	 * _display_payment_options
+	 *
+	 * @param string $transaction_details
+	 * @return EE_Form_Section_Proper
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws \EventEspresso\core\exceptions\InvalidDataTypeException
+	 * @throws \EventEspresso\core\exceptions\InvalidInterfaceException
+	 */
+	private function _display_payment_options($transaction_details = '')
+	{
+		// has method_of_payment been set by no-js user?
+		$this->checkout->selected_method_of_payment = $this->_get_selected_method_of_payment();
+		// build payment options form
+		return apply_filters(
+			'FHEE__EE_SPCO_Reg_Step_Payment_Options___display_payment_options__payment_options_form',
+			new EE_Form_Section_Proper(
+				array(
+					'subsections'     => array(
+						'before_payment_options' => apply_filters(
+							'FHEE__EE_SPCO_Reg_Step_Payment_Options___display_payment_options__before_payment_options',
+							new EE_Form_Section_Proper(
+								array('layout_strategy' => new EE_Div_Per_Section_Layout())
+							)
+						),
+						'payment_options'        => $this->_setup_payment_options(),
+						'after_payment_options'  => apply_filters(
+							'FHEE__EE_SPCO_Reg_Step_Payment_Options___display_payment_options__after_payment_options',
+							new EE_Form_Section_Proper(
+								array('layout_strategy' => new EE_Div_Per_Section_Layout())
+							)
+						),
+					),
+					'layout_strategy' => new EE_Template_Layout(
+						array(
+							'layout_template_file' => $this->_template,
+							'template_args'        => apply_filters(
+								'FHEE__EE_SPCO_Reg_Step_Payment_Options___display_payment_options__template_args',
+								array(
+									'reg_count'                 => $this->line_item_display->total_items(),
+									'transaction_details'       => $transaction_details,
+									'available_payment_methods' => array(),
+								)
+							),
+						)
+					),
+				)
+			)
+		);
+	}
+
+
+	/**
+	 * _extra_hidden_inputs
+	 *
+	 * @param bool $no_payment_required
+	 * @return \EE_Form_Section_Proper
+	 * @throws \EE_Error
+	 */
+	private function _extra_hidden_inputs($no_payment_required = true)
+	{
+		return new EE_Form_Section_Proper(
+			array(
+				'html_id'         => 'ee-' . $this->slug() . '-extra-hidden-inputs',
+				'layout_strategy' => new EE_Div_Per_Section_Layout(),
+				'subsections'     => array(
+					'spco_no_payment_required' => new EE_Hidden_Input(
+						array(
+							'normalization_strategy' => new EE_Boolean_Normalization(),
+							'html_name'              => 'spco_no_payment_required',
+							'html_id'                => 'spco-no-payment-required-payment_options',
+							'default'                => $no_payment_required,
+						)
+					),
+					'spco_transaction_id'      => new EE_Fixed_Hidden_Input(
+						array(
+							'normalization_strategy' => new EE_Int_Normalization(),
+							'html_name'              => 'spco_transaction_id',
+							'html_id'                => 'spco-transaction-id',
+							'default'                => $this->checkout->transaction->ID(),
+						)
+					),
+				),
+			)
+		);
+	}
+
+
+	/**
+	 *    _apply_registration_payments_to_amount_owing
+	 *
+	 * @access protected
+	 * @param array $registrations
+	 * @throws EE_Error
+	 */
+	protected function _apply_registration_payments_to_amount_owing(array $registrations)
+	{
+		$payments = array();
+		foreach ($registrations as $registration) {
+			if ($registration instanceof EE_Registration && $registration->owes_monies_and_can_pay()) {
+				$payments += $registration->registration_payments();
+			}
+		}
+		if (! empty($payments)) {
+			foreach ($payments as $payment) {
+				if ($payment instanceof EE_Registration_Payment) {
+					$this->checkout->amount_owing -= $payment->amount();
+				}
+			}
+		}
+	}
+
+
+	/**
+	 *    _reset_selected_method_of_payment
+	 *
+	 * @access    private
+	 * @param    bool $force_reset
+	 * @return void
+	 * @throws InvalidArgumentException
+	 * @throws \EventEspresso\core\exceptions\InvalidDataTypeException
+	 * @throws \EventEspresso\core\exceptions\InvalidInterfaceException
+	 */
+	private function _reset_selected_method_of_payment($force_reset = false)
+	{
+		$reset_payment_method = $force_reset
+			? true
+			: sanitize_text_field(EE_Registry::instance()->REQ->get('reset_payment_method', false));
+		if ($reset_payment_method) {
+			$this->checkout->selected_method_of_payment = null;
+			$this->checkout->payment_method             = null;
+			$this->checkout->billing_form               = null;
+			$this->_save_selected_method_of_payment();
+		}
+	}
+
+
+	/**
+	 * _save_selected_method_of_payment
+	 * stores the selected_method_of_payment in the session
+	 * so that it's available for all subsequent requests including AJAX
+	 *
+	 * @access        private
+	 * @param string $selected_method_of_payment
+	 * @return void
+	 * @throws InvalidArgumentException
+	 * @throws \EventEspresso\core\exceptions\InvalidDataTypeException
+	 * @throws \EventEspresso\core\exceptions\InvalidInterfaceException
+	 */
+	private function _save_selected_method_of_payment($selected_method_of_payment = '')
+	{
+		$selected_method_of_payment = ! empty($selected_method_of_payment)
+			? $selected_method_of_payment
+			: $this->checkout->selected_method_of_payment;
+		EE_Registry::instance()->SSN->set_session_data(
+			array('selected_method_of_payment' => $selected_method_of_payment)
+		);
+	}
+
+
+	/**
+	 * _setup_payment_options
+	 *
+	 * @return EE_Form_Section_Proper
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws ReflectionException
+	 * @throws \EventEspresso\core\exceptions\InvalidDataTypeException
+	 * @throws \EventEspresso\core\exceptions\InvalidInterfaceException
+	 */
+	public function _setup_payment_options()
+	{
+		// load payment method classes
+		$this->checkout->available_payment_methods = $this->_get_available_payment_methods();
+		if (empty($this->checkout->available_payment_methods)) {
+			EE_Error::add_error(
+				apply_filters(
+					'FHEE__EE_SPCO_Reg_Step_Payment_Options___setup_payment_options__error_message_no_payment_methods',
+					sprintf(
+						esc_html__(
+							'Sorry, you cannot complete your purchase because a payment method is not active.%1$s Please contact %2$s for assistance and provide a description of the problem.',
+							'event_espresso'
+						),
+						'<br>',
+						EE_Registry::instance()->CFG->organization->get_pretty('email')
+					)
+				),
+				__FILE__,
+				__FUNCTION__,
+				__LINE__
+			);
+		}
+		// switch up header depending on number of available payment methods
+		$payment_method_header     = count($this->checkout->available_payment_methods) > 1
+			? apply_filters(
+				'FHEE__registration_page_payment_options__method_of_payment_hdr',
+				esc_html__('Please Select Your Method of Payment', 'event_espresso')
+			)
+			: apply_filters(
+				'FHEE__registration_page_payment_options__method_of_payment_hdr',
+				esc_html__('Method of Payment', 'event_espresso')
+			);
+		$available_payment_methods = array(
+			// display the "Payment Method" header
+			'payment_method_header' => new EE_Form_Section_HTML(
+				EEH_HTML::h4($payment_method_header, 'method-of-payment-hdr')
+			),
+		);
+		// the list of actual payment methods ( invoice, paypal, etc ) in a  ( slug => HTML )  format
+		$available_payment_method_options = array();
+		$default_payment_method_option    = array();
+		// additional instructions to be displayed and hidden below payment methods (adding a clearing div to start)
+		$payment_methods_billing_info = array(
+			new EE_Form_Section_HTML(
+				EEH_HTML::div('<br />', '', '', 'clear:both;')
+			),
+		);
+		// loop through payment methods
+		foreach ($this->checkout->available_payment_methods as $payment_method) {
+			if ($payment_method instanceof EE_Payment_Method) {
+				$payment_method_button = EEH_HTML::img(
+					$payment_method->button_url(),
+					$payment_method->name(),
+					'spco-payment-method-' . $payment_method->slug() . '-btn-img',
+					'spco-payment-method-btn-img'
+				);
+				// check if any payment methods are set as default
+				// if payment method is already selected OR nothing is selected and this payment method should be
+				// open_by_default
+				if (($this->checkout->selected_method_of_payment === $payment_method->slug())
+					|| (! $this->checkout->selected_method_of_payment && $payment_method->open_by_default())
+				) {
+					$this->checkout->selected_method_of_payment = $payment_method->slug();
+					$this->_save_selected_method_of_payment();
+					$default_payment_method_option[$payment_method->slug()] = $payment_method_button;
+				} else {
+					$available_payment_method_options[$payment_method->slug()] = $payment_method_button;
+				}
+				$payment_methods_billing_info[$payment_method->slug() . '-info'] = $this->_payment_method_billing_info(
+					$payment_method
+				);
+			}
+		}
+		// prepend available_payment_method_options with default_payment_method_option so that it appears first in list
+		// of PMs
+		$available_payment_method_options = $default_payment_method_option + $available_payment_method_options;
+		// now generate the actual form  inputs
+		$available_payment_methods['available_payment_methods'] = $this->_available_payment_method_inputs(
+			$available_payment_method_options
+		);
+		$available_payment_methods                              += $payment_methods_billing_info;
+		// build the available payment methods form
+		return new EE_Form_Section_Proper(
+			array(
+				'html_id'         => 'spco-available-methods-of-payment-dv',
+				'subsections'     => $available_payment_methods,
+				'layout_strategy' => new EE_Div_Per_Section_Layout(),
+			)
+		);
+	}
+
+
+	/**
+	 * _get_available_payment_methods
+	 *
+	 * @return EE_Payment_Method[]
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws ReflectionException
+	 * @throws \EventEspresso\core\exceptions\InvalidDataTypeException
+	 * @throws \EventEspresso\core\exceptions\InvalidInterfaceException
+	 */
+	protected function _get_available_payment_methods()
+	{
+		if (! empty($this->checkout->available_payment_methods)) {
+			return $this->checkout->available_payment_methods;
+		}
+		$available_payment_methods = array();
+		// load EEM_Payment_Method
+		EE_Registry::instance()->load_model('Payment_Method');
+		/** @type EEM_Payment_Method $EEM_Payment_Method */
+		$EEM_Payment_Method = EE_Registry::instance()->LIB->EEM_Payment_Method;
+		// get all active payment methods
+		$payment_methods = $EEM_Payment_Method->get_all_for_transaction(
+			$this->checkout->transaction,
+			EEM_Payment_Method::scope_cart
+		);
+		foreach ($payment_methods as $payment_method) {
+			if ($payment_method instanceof EE_Payment_Method) {
+				$available_payment_methods[$payment_method->slug()] = $payment_method;
+			}
+		}
+		return $available_payment_methods;
+	}
+
+
+	/**
+	 *    _available_payment_method_inputs
+	 *
+	 * @access    private
+	 * @param    array $available_payment_method_options
+	 * @return    \EE_Form_Section_Proper
+	 */
+	private function _available_payment_method_inputs($available_payment_method_options = array())
+	{
+		// generate inputs
+		return new EE_Form_Section_Proper(
+			array(
+				'html_id'         => 'ee-available-payment-method-inputs',
+				'layout_strategy' => new EE_Div_Per_Section_Layout(),
+				'subsections'     => array(
+					'' => new EE_Radio_Button_Input(
+						$available_payment_method_options,
+						array(
+							'html_name'          => 'selected_method_of_payment',
+							'html_class'         => 'spco-payment-method',
+							'default'            => $this->checkout->selected_method_of_payment,
+							'label_size'         => 11,
+							'enforce_label_size' => true,
+						)
+					),
+				),
+			)
+		);
+	}
+
+
+	/**
+	 *    _payment_method_billing_info
+	 *
+	 * @access    private
+	 * @param    EE_Payment_Method $payment_method
+	 * @return EE_Form_Section_Proper
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws \EventEspresso\core\exceptions\InvalidDataTypeException
+	 * @throws \EventEspresso\core\exceptions\InvalidInterfaceException
+	 */
+	private function _payment_method_billing_info(EE_Payment_Method $payment_method)
+	{
+		$currently_selected = $this->checkout->selected_method_of_payment === $payment_method->slug()
+			? true
+			: false;
+		// generate the billing form for payment method
+		$billing_form                 = $currently_selected
+			? $this->_get_billing_form_for_payment_method($payment_method)
+			: new EE_Form_Section_HTML();
+		$this->checkout->billing_form = $currently_selected
+			? $billing_form
+			: $this->checkout->billing_form;
+		// it's all in the details
+		$info_html = EEH_HTML::h3(
+			esc_html__('Important information regarding your payment', 'event_espresso'),
+			'',
+			'spco-payment-method-hdr'
+		);
+		// add some info regarding the step, either from what's saved in the admin,
+		// or a default string depending on whether the PM has a billing form or not
+		if ($payment_method->description()) {
+			$payment_method_info = $payment_method->description();
+		} elseif ($billing_form instanceof EE_Billing_Info_Form) {
+			$payment_method_info = sprintf(
+				esc_html__(
+					'Please provide the following billing information, then click the "%1$s" button below in order to proceed.',
+					'event_espresso'
+				),
+				$this->submit_button_text()
+			);
+		} else {
+			$payment_method_info = sprintf(
+				esc_html__('Please click the "%1$s" button below in order to proceed.', 'event_espresso'),
+				$this->submit_button_text()
+			);
+		}
+		$info_html .= EEH_HTML::p(
+			apply_filters(
+				'FHEE__EE_SPCO_Reg_Step_Payment_Options___payment_method_billing_info__payment_method_info',
+				$payment_method_info
+			),
+			'',
+			'spco-payment-method-desc ee-attention'
+		);
+		return new EE_Form_Section_Proper(
+			array(
+				'html_id'         => 'spco-payment-method-info-' . $payment_method->slug(),
+				'html_class'      => 'spco-payment-method-info-dv',
+				// only display the selected or default PM
+				'html_style'      => $currently_selected ? '' : 'display:none;',
+				'layout_strategy' => new EE_Div_Per_Section_Layout(),
+				'subsections'     => array(
+					'info'         => new EE_Form_Section_HTML($info_html),
+					'billing_form' => $currently_selected ? $billing_form : new EE_Form_Section_HTML(),
+				),
+			)
+		);
+	}
+
+
+	/**
+	 * get_billing_form_html_for_payment_method
+	 *
+	 * @access public
+	 * @return string
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws ReflectionException
+	 * @throws \EventEspresso\core\exceptions\InvalidDataTypeException
+	 * @throws \EventEspresso\core\exceptions\InvalidInterfaceException
+	 */
+	public function get_billing_form_html_for_payment_method()
+	{
+		// how have they chosen to pay?
+		$this->checkout->selected_method_of_payment = $this->_get_selected_method_of_payment(true);
+		$this->checkout->payment_method             = $this->_get_payment_method_for_selected_method_of_payment();
+		if (! $this->checkout->payment_method instanceof EE_Payment_Method) {
+			return false;
+		}
+		if (apply_filters(
+			'FHEE__EE_SPCO_Reg_Step_Payment_Options__registration_checkout__selected_payment_method__display_success',
+			false
+		)) {
+			EE_Error::add_success(
+				apply_filters(
+					'FHEE__Single_Page_Checkout__registration_checkout__selected_payment_method',
+					sprintf(
+						esc_html__(
+							'You have selected "%s" as your method of payment. Please note the important payment information below.',
+							'event_espresso'
+						),
+						$this->checkout->payment_method->name()
+					)
+				)
+			);
+		}
+		// now generate billing form for selected method of payment
+		$payment_method_billing_form = $this->_get_billing_form_for_payment_method($this->checkout->payment_method);
+		// fill form with attendee info if applicable
+		if ($payment_method_billing_form instanceof EE_Billing_Attendee_Info_Form
+			&& $this->checkout->transaction_has_primary_registrant()
+		) {
+			$payment_method_billing_form->populate_from_attendee(
+				$this->checkout->transaction->primary_registration()->attendee()
+			);
+		}
+		// and debug content
+		if ($payment_method_billing_form instanceof EE_Billing_Info_Form
+			&& $this->checkout->payment_method->type_obj() instanceof EE_PMT_Base
+		) {
+			$payment_method_billing_form =
+				$this->checkout->payment_method->type_obj()->apply_billing_form_debug_settings(
+					$payment_method_billing_form
+				);
+		}
+		$billing_info = $payment_method_billing_form instanceof EE_Form_Section_Proper
+			? $payment_method_billing_form->get_html()
+			: '';
+		$this->checkout->json_response->set_return_data(array('payment_method_info' => $billing_info));
+		// localize validation rules for main form
+		$this->checkout->current_step->reg_form->localize_validation_rules();
+		$this->checkout->json_response->add_validation_rules(EE_Form_Section_Proper::js_localization());
+		return true;
+	}
+
+
+	/**
+	 * _get_billing_form_for_payment_method
+	 *
+	 * @access private
+	 * @param EE_Payment_Method $payment_method
+	 * @return EE_Billing_Info_Form|EE_Form_Section_HTML
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws \EventEspresso\core\exceptions\InvalidDataTypeException
+	 * @throws \EventEspresso\core\exceptions\InvalidInterfaceException
+	 */
+	private function _get_billing_form_for_payment_method(EE_Payment_Method $payment_method)
+	{
+		$billing_form = $payment_method->type_obj()->billing_form(
+			$this->checkout->transaction,
+			array('amount_owing' => $this->checkout->amount_owing)
+		);
+		if ($billing_form instanceof EE_Billing_Info_Form) {
+			if (apply_filters(
+				'FHEE__EE_SPCO_Reg_Step_Payment_Options__registration_checkout__selected_payment_method__display_success',
+				false
+			)
+				&& EE_Registry::instance()->REQ->is_set('payment_method')
+			) {
+				EE_Error::add_success(
+					apply_filters(
+						'FHEE__Single_Page_Checkout__registration_checkout__selected_payment_method',
+						sprintf(
+							esc_html__(
+								'You have selected "%s" as your method of payment. Please note the important payment information below.',
+								'event_espresso'
+							),
+							$payment_method->name()
+						)
+					)
+				);
+			}
+			return apply_filters(
+				'FHEE__EE_SPCO_Reg_Step_Payment_Options___get_billing_form_for_payment_method__billing_form',
+				$billing_form,
+				$payment_method
+			);
+		}
+		// no actual billing form, so return empty HTML form section
+		return new EE_Form_Section_HTML();
+	}
+
+
+	/**
+	 * _get_selected_method_of_payment
+	 *
+	 * @access private
+	 * @param boolean $required whether to throw an error if the "selected_method_of_payment"
+	 *                          is not found in the incoming request
+	 * @param string  $request_param
+	 * @return NULL|string
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws \EventEspresso\core\exceptions\InvalidDataTypeException
+	 * @throws \EventEspresso\core\exceptions\InvalidInterfaceException
+	 */
+	private function _get_selected_method_of_payment(
+		$required = false,
+		$request_param = 'selected_method_of_payment'
+	) {
+		// is selected_method_of_payment set in the request ?
+		$selected_method_of_payment = EE_Registry::instance()->REQ->get($request_param, false);
+		if ($selected_method_of_payment) {
+			// sanitize it
+			$selected_method_of_payment = is_array($selected_method_of_payment)
+				? array_shift($selected_method_of_payment)
+				: $selected_method_of_payment;
+			$selected_method_of_payment = sanitize_text_field($selected_method_of_payment);
+			// store it in the session so that it's available for all subsequent requests including AJAX
+			$this->_save_selected_method_of_payment($selected_method_of_payment);
+		} else {
+			// or is is set in the session ?
+			$selected_method_of_payment = EE_Registry::instance()->SSN->get_session_data(
+				'selected_method_of_payment'
+			);
+		}
+		// do ya really really gotta have it?
+		if (empty($selected_method_of_payment) && $required) {
+			EE_Error::add_error(
+				sprintf(
+					esc_html__(
+						'The selected method of payment could not be determined.%sPlease ensure that you have selected one before proceeding.%sIf you continue to experience difficulties, then refresh your browser and try again, or contact %s for assistance.',
+						'event_espresso'
+					),
+					'<br/>',
+					'<br/>',
+					EE_Registry::instance()->CFG->organization->get_pretty('email')
+				),
+				__FILE__,
+				__FUNCTION__,
+				__LINE__
+			);
+			return null;
+		}
+		return $selected_method_of_payment;
+	}
+
+
+
+
+
+
+	/********************************************************************************************************/
+	/***********************************  SWITCH PAYMENT METHOD  ************************************/
+	/********************************************************************************************************/
+	/**
+	 * switch_payment_method
+	 *
+	 * @access public
+	 * @return string
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws \EventEspresso\core\exceptions\InvalidDataTypeException
+	 * @throws \EventEspresso\core\exceptions\InvalidInterfaceException
+	 */
+	public function switch_payment_method()
+	{
+		if (! $this->_verify_payment_method_is_set()) {
+			return false;
+		}
+		if (apply_filters(
+			'FHEE__EE_SPCO_Reg_Step_Payment_Options__registration_checkout__selected_payment_method__display_success',
+			false
+		)) {
+			EE_Error::add_success(
+				apply_filters(
+					'FHEE__Single_Page_Checkout__registration_checkout__selected_payment_method',
+					sprintf(
+						esc_html__(
+							'You have selected "%s" as your method of payment. Please note the important payment information below.',
+							'event_espresso'
+						),
+						$this->checkout->payment_method->name()
+					)
+				)
+			);
+		}
+		// generate billing form for selected method of payment if it hasn't been done already
+		if ($this->checkout->payment_method->type_obj()->has_billing_form()) {
+			$this->checkout->billing_form = $this->_get_billing_form_for_payment_method(
+				$this->checkout->payment_method
+			);
+		}
+		// fill form with attendee info if applicable
+		if (apply_filters(
+			'FHEE__populate_billing_form_fields_from_attendee',
+			(
+				$this->checkout->billing_form instanceof EE_Billing_Attendee_Info_Form
+				&& $this->checkout->transaction_has_primary_registrant()
+			),
+			$this->checkout->billing_form,
+			$this->checkout->transaction
+		)
+		) {
+			$this->checkout->billing_form->populate_from_attendee(
+				$this->checkout->transaction->primary_registration()->attendee()
+			);
+		}
+		// and debug content
+		if ($this->checkout->billing_form instanceof EE_Billing_Info_Form
+			&& $this->checkout->payment_method->type_obj() instanceof EE_PMT_Base
+		) {
+			$this->checkout->billing_form =
+				$this->checkout->payment_method->type_obj()->apply_billing_form_debug_settings(
+					$this->checkout->billing_form
+				);
+		}
+		// get html and validation rules for form
+		if ($this->checkout->billing_form instanceof EE_Form_Section_Proper) {
+			$this->checkout->json_response->set_return_data(
+				array('payment_method_info' => $this->checkout->billing_form->get_html())
+			);
+			// localize validation rules for main form
+			$this->checkout->billing_form->localize_validation_rules(true);
+			$this->checkout->json_response->add_validation_rules(EE_Form_Section_Proper::js_localization());
+		} else {
+			$this->checkout->json_response->set_return_data(array('payment_method_info' => ''));
+		}
+		//prevents advancement to next step
+		$this->checkout->continue_reg = false;
+		return true;
+	}
+
+
+	/**
+	 * _verify_payment_method_is_set
+	 *
+	 * @return bool
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws ReflectionException
+	 * @throws \EventEspresso\core\exceptions\InvalidDataTypeException
+	 * @throws \EventEspresso\core\exceptions\InvalidInterfaceException
+	 */
+	protected function _verify_payment_method_is_set()
+	{
+		// generate billing form for selected method of payment if it hasn't been done already
+		if (empty($this->checkout->selected_method_of_payment)) {
+			// how have they chosen to pay?
+			$this->checkout->selected_method_of_payment = $this->_get_selected_method_of_payment(true);
+		} else {
+			// choose your own adventure based on method_of_payment
+			switch ($this->checkout->selected_method_of_payment) {
+				case 'events_sold_out' :
+					EE_Error::add_attention(
+						apply_filters(
+							'FHEE__EE_SPCO_Reg_Step_Payment_Options___verify_payment_method_is_set__sold_out_events_msg',
+							esc_html__(
+								'It appears that the event you were about to make a payment for has sold out since this form first loaded. Please contact the event administrator if you believe this is an error.',
+								'event_espresso'
+							)
+						),
+						__FILE__, __FUNCTION__, __LINE__
+					);
+					return false;
+					break;
+				case 'payments_closed' :
+					EE_Error::add_attention(
+						apply_filters(
+							'FHEE__EE_SPCO_Reg_Step_Payment_Options___verify_payment_method_is_set__payments_closed_msg',
+							esc_html__(
+								'It appears that the event you were about to make a payment for is not accepting payments at this time. Please contact the event administrator if you believe this is an error.',
+								'event_espresso'
+							)
+						),
+						__FILE__, __FUNCTION__, __LINE__
+					);
+					return false;
+					break;
+				case 'no_payment_required' :
+					EE_Error::add_attention(
+						apply_filters(
+							'FHEE__EE_SPCO_Reg_Step_Payment_Options___verify_payment_method_is_set__no_payment_required_msg',
+							esc_html__(
+								'It appears that the event you were about to make a payment for does not require payment. Please contact the event administrator if you believe this is an error.',
+								'event_espresso'
+							)
+						),
+						__FILE__, __FUNCTION__, __LINE__
+					);
+					return false;
+					break;
+				default:
+			}
+		}
+		// verify payment method
+		if (! $this->checkout->payment_method instanceof EE_Payment_Method) {
+			// get payment method for selected method of payment
+			$this->checkout->payment_method = $this->_get_payment_method_for_selected_method_of_payment();
+		}
+		return $this->checkout->payment_method instanceof EE_Payment_Method ? true : false;
+	}
+
+
+
+	/********************************************************************************************************/
+	/***************************************  SAVE PAYER DETAILS  ****************************************/
+	/********************************************************************************************************/
+	/**
+	 * save_payer_details_via_ajax
+	 *
+	 * @return void
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws ReflectionException
+	 * @throws RuntimeException
+	 * @throws \EventEspresso\core\exceptions\InvalidDataTypeException
+	 * @throws \EventEspresso\core\exceptions\InvalidInterfaceException
+	 */
+	public function save_payer_details_via_ajax()
+	{
+		if (! $this->_verify_payment_method_is_set()) {
+			return;
+		}
+		// generate billing form for selected method of payment if it hasn't been done already
+		if ($this->checkout->payment_method->type_obj()->has_billing_form()) {
+			$this->checkout->billing_form = $this->_get_billing_form_for_payment_method(
+				$this->checkout->payment_method
+			);
+		}
+		// generate primary attendee from payer info if applicable
+		if (! $this->checkout->transaction_has_primary_registrant()) {
+			$attendee = $this->_create_attendee_from_request_data();
+			if ($attendee instanceof EE_Attendee) {
+				foreach ($this->checkout->transaction->registrations() as $registration) {
+					if ($registration->is_primary_registrant()) {
+						$this->checkout->primary_attendee_obj = $attendee;
+						$registration->_add_relation_to($attendee, 'Attendee');
+						$registration->set_attendee_id($attendee->ID());
+						$registration->update_cache_after_object_save('Attendee', $attendee);
+					}
+				}
+			}
+		}
+	}
+
+
+	/**
+	 * create_attendee_from_request_data
+	 * uses info from alternate GET or POST data (such as AJAX) to create a new attendee
+	 *
+	 * @return EE_Attendee
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws ReflectionException
+	 * @throws \EventEspresso\core\exceptions\InvalidDataTypeException
+	 * @throws \EventEspresso\core\exceptions\InvalidInterfaceException
+	 */
+	protected function _create_attendee_from_request_data()
+	{
+		// get State ID
+		$STA_ID = ! empty($_REQUEST['state']) ? sanitize_text_field($_REQUEST['state']) : '';
+		if (! empty($STA_ID)) {
+			// can we get state object from name ?
+			EE_Registry::instance()->load_model('State');
+			$state  = EEM_State::instance()->get_col(array(array('STA_name' => $STA_ID), 'limit' => 1), 'STA_ID');
+			$STA_ID = is_array($state) && ! empty($state) ? reset($state) : $STA_ID;
+		}
+		// get Country ISO
+		$CNT_ISO = ! empty($_REQUEST['country']) ? sanitize_text_field($_REQUEST['country']) : '';
+		if (! empty($CNT_ISO)) {
+			// can we get country object from name ?
+			EE_Registry::instance()->load_model('Country');
+			$country = EEM_Country::instance()->get_col(
+				array(array('CNT_name' => $CNT_ISO), 'limit' => 1),
+				'CNT_ISO'
+			);
+			$CNT_ISO = is_array($country) && ! empty($country) ? reset($country) : $CNT_ISO;
+		}
+		// grab attendee data
+		$attendee_data = array(
+			'ATT_fname'    => ! empty($_REQUEST['first_name']) ? sanitize_text_field($_REQUEST['first_name']) : '',
+			'ATT_lname'    => ! empty($_REQUEST['last_name']) ? sanitize_text_field($_REQUEST['last_name']) : '',
+			'ATT_email'    => ! empty($_REQUEST['email']) ? sanitize_email($_REQUEST['email']) : '',
+			'ATT_address'  => ! empty($_REQUEST['address']) ? sanitize_text_field($_REQUEST['address']) : '',
+			'ATT_address2' => ! empty($_REQUEST['address2']) ? sanitize_text_field($_REQUEST['address2']) : '',
+			'ATT_city'     => ! empty($_REQUEST['city']) ? sanitize_text_field($_REQUEST['city']) : '',
+			'STA_ID'       => $STA_ID,
+			'CNT_ISO'      => $CNT_ISO,
+			'ATT_zip'      => ! empty($_REQUEST['zip']) ? sanitize_text_field($_REQUEST['zip']) : '',
+			'ATT_phone'    => ! empty($_REQUEST['phone']) ? sanitize_text_field($_REQUEST['phone']) : '',
+		);
+		// validate the email address since it is the most important piece of info
+		if (empty($attendee_data['ATT_email']) || $attendee_data['ATT_email'] !== $_REQUEST['email']) {
+			EE_Error::add_error(
+				esc_html__('An invalid email address was submitted.', 'event_espresso'),
+				__FILE__,
+				__FUNCTION__,
+				__LINE__
+			);
+		}
+		// does this attendee already exist in the db ? we're searching using a combination of first name, last name,
+		// AND email address
+		if (! empty($attendee_data['ATT_fname'])
+			&& ! empty($attendee_data['ATT_lname'])
+			&& ! empty($attendee_data['ATT_email'])
+		) {
+			$existing_attendee = EE_Registry::instance()->LIB->EEM_Attendee->find_existing_attendee(
+				array(
+					'ATT_fname' => $attendee_data['ATT_fname'],
+					'ATT_lname' => $attendee_data['ATT_lname'],
+					'ATT_email' => $attendee_data['ATT_email'],
+				)
+			);
+			if ($existing_attendee instanceof EE_Attendee) {
+				return $existing_attendee;
+			}
+		}
+		// no existing attendee? kk let's create a new one
+		// kinda lame, but we need a first and last name to create an attendee, so use the email address if those
+		// don't exist
+		$attendee_data['ATT_fname'] = ! empty($attendee_data['ATT_fname'])
+			? $attendee_data['ATT_fname']
+			: $attendee_data['ATT_email'];
+		$attendee_data['ATT_lname'] = ! empty($attendee_data['ATT_lname'])
+			? $attendee_data['ATT_lname']
+			: $attendee_data['ATT_email'];
+		return EE_Attendee::new_instance($attendee_data);
+	}
+
+
+
+	/********************************************************************************************************/
+	/****************************************  PROCESS REG STEP  *****************************************/
+	/********************************************************************************************************/
+	/**
+	 * process_reg_step
+	 *
+	 * @return bool
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws ReflectionException
+	 * @throws \EventEspresso\core\exceptions\EntityNotFoundException
+	 * @throws \EventEspresso\core\exceptions\InvalidDataTypeException
+	 * @throws \EventEspresso\core\exceptions\InvalidInterfaceException
+	 * @throws \EventEspresso\core\exceptions\InvalidStatusException
+	 */
+	public function process_reg_step()
+	{
+		// how have they chosen to pay?
+		$this->checkout->selected_method_of_payment = $this->checkout->transaction->is_free()
+			? 'no_payment_required'
+			: $this->_get_selected_method_of_payment(true);
+		// choose your own adventure based on method_of_payment
+		switch ($this->checkout->selected_method_of_payment) {
+
+			case 'events_sold_out' :
+				$this->checkout->redirect     = true;
+				$this->checkout->redirect_url = $this->checkout->cancel_page_url;
+				$this->checkout->json_response->set_redirect_url($this->checkout->redirect_url);
+				// mark this reg step as completed
+				$this->set_completed();
+				return false;
+				break;
+
+			case 'payments_closed' :
+				if (apply_filters(
+					'FHEE__EE_SPCO_Reg_Step_Payment_Options__process_reg_step__payments_closed__display_success',
+					false
+				)) {
+					EE_Error::add_success(
+						esc_html__('no payment required at this time.', 'event_espresso'),
+						__FILE__,
+						__FUNCTION__,
+						__LINE__
+					);
+				}
+				// mark this reg step as completed
+				$this->set_completed();
+				return true;
+				break;
+
+			case 'no_payment_required' :
+				if (apply_filters(
+					'FHEE__EE_SPCO_Reg_Step_Payment_Options__process_reg_step__no_payment_required__display_success',
+					false
+				)) {
+					EE_Error::add_success(
+						esc_html__('no payment required.', 'event_espresso'),
+						__FILE__,
+						__FUNCTION__,
+						__LINE__
+					);
+				}
+				// mark this reg step as completed
+				$this->set_completed();
+				return true;
+				break;
+
+			default:
+				$registrations         = EE_Registry::instance()->SSN->checkout()->transaction->registrations(
+					EE_Registry::instance()->SSN->checkout()->reg_cache_where_params
+				);
+				$ejected_registrations = EE_SPCO_Reg_Step_Payment_Options::find_registrations_that_lost_their_space(
+					$registrations,
+					EE_Registry::instance()->SSN->checkout()->revisit
+				);
+				// calculate difference between the two arrays
+				$registrations = array_diff($registrations, $ejected_registrations);
+				if (empty($registrations)) {
+					$this->_redirect_because_event_sold_out();
+					return false;
+				}
+				$payment_successful = $this->_process_payment();
+				if ($payment_successful) {
+					$this->checkout->continue_reg = true;
+					$this->_maybe_set_completed($this->checkout->payment_method);
+				} else {
+					$this->checkout->continue_reg = false;
+				}
+				return $payment_successful;
+		}
+	}
+
+
+	/**
+	 * _redirect_because_event_sold_out
+	 *
+	 * @access protected
+	 * @return void
+	 */
+	protected function _redirect_because_event_sold_out()
+	{
+		$this->checkout->continue_reg = false;
+		// set redirect URL
+		$this->checkout->redirect_url = add_query_arg(
+			array('e_reg_url_link' => $this->checkout->reg_url_link),
+			$this->checkout->current_step->reg_step_url()
+		);
+		$this->checkout->json_response->set_redirect_url($this->checkout->redirect_url);
+	}
+
+
+	/**
+	 * _maybe_set_completed
+	 *
+	 * @access protected
+	 * @param \EE_Payment_Method $payment_method
+	 * @return void
+	 * @throws \EE_Error
+	 */
+	protected function _maybe_set_completed(EE_Payment_Method $payment_method)
+	{
+		switch ($payment_method->type_obj()->payment_occurs()) {
+			case EE_PMT_Base::offsite :
+				break;
+			case EE_PMT_Base::onsite :
+			case EE_PMT_Base::offline :
+				// mark this reg step as completed
+				$this->set_completed();
+				break;
+		}
+	}
+
+
+	/**
+	 *    update_reg_step
+	 *    this is the final step after a user  revisits the site to retry a payment
+	 *
+	 * @return bool
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws ReflectionException
+	 * @throws \EventEspresso\core\exceptions\EntityNotFoundException
+	 * @throws \EventEspresso\core\exceptions\InvalidDataTypeException
+	 * @throws \EventEspresso\core\exceptions\InvalidInterfaceException
+	 * @throws \EventEspresso\core\exceptions\InvalidStatusException
+	 */
+	public function update_reg_step()
+	{
+		$success = true;
+		// if payment required
+		if ($this->checkout->transaction->total() > 0) {
+			do_action(
+				'AHEE__EE_Single_Page_Checkout__process_finalize_registration__before_gateway',
+				$this->checkout->transaction
+			);
+			// attempt payment via payment method
+			$success = $this->process_reg_step();
+		}
+		if ($success && ! $this->checkout->redirect) {
+			$this->checkout->cart->get_grand_total()->save_this_and_descendants_to_txn(
+				$this->checkout->transaction->ID()
+			);
+			// set return URL
+			$this->checkout->redirect_url = add_query_arg(
+				array('e_reg_url_link' => $this->checkout->reg_url_link),
+				$this->checkout->thank_you_page_url
+			);
+		}
+		return $success;
+	}
+
+
+	/**
+	 *    _process_payment
+	 *
+	 * @access private
+	 * @return bool
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws ReflectionException
+	 * @throws RuntimeException
+	 * @throws \EventEspresso\core\exceptions\InvalidDataTypeException
+	 * @throws \EventEspresso\core\exceptions\InvalidInterfaceException
+	 */
+	private function _process_payment()
+	{
+		// basically confirm that the event hasn't sold out since they hit the page
+		if (! $this->_last_second_ticket_verifications()) {
+			return false;
+		}
+		// ya gotta make a choice man
+		if (empty($this->checkout->selected_method_of_payment)) {
+			$this->checkout->json_response->set_plz_select_method_of_payment(
+				esc_html__('Please select a method of payment before proceeding.', 'event_espresso')
+			);
+			return false;
+		}
+		// get EE_Payment_Method object
+		if (! $this->checkout->payment_method = $this->_get_payment_method_for_selected_method_of_payment()) {
+			return false;
+		}
+		// setup billing form
+		if ($this->checkout->payment_method->is_on_site()) {
+			$this->checkout->billing_form = $this->_get_billing_form_for_payment_method(
+				$this->checkout->payment_method
+			);
+			// bad billing form ?
+			if (! $this->_billing_form_is_valid()) {
+				return false;
+			}
+		}
+		// ensure primary registrant has been fully processed
+		if (! $this->_setup_primary_registrant_prior_to_payment()) {
+			return false;
+		}
+		// if session is close to expiring (under 10 minutes by default)
+		if ((time() - EE_Registry::instance()->SSN->expiration()) < EE_Registry::instance()->SSN->extension()) {
+			// add some time to session expiration so that payment can be completed
+			EE_Registry::instance()->SSN->extend_expiration();
+		}
+		/** @type EE_Transaction_Processor $transaction_processor */
+		//$transaction_processor = EE_Registry::instance()->load_class( 'Transaction_Processor' );
+		// in case a registrant leaves to an Off-Site Gateway and never returns, we want to approve any registrations
+		// for events with a default reg status of Approved
+		// $transaction_processor->toggle_registration_statuses_for_default_approved_events(
+		//      $this->checkout->transaction, $this->checkout->reg_cache_where_params
+		// );
+		// attempt payment
+		$payment = $this->_attempt_payment($this->checkout->payment_method);
+		// process results
+		$payment = $this->_validate_payment($payment);
+		$payment = $this->_post_payment_processing($payment);
+		// verify payment
+		if ($payment instanceof EE_Payment) {
+			// store that for later
+			$this->checkout->payment = $payment;
+			// we can also consider the TXN to not have been failed, so temporarily upgrade it's status to abandoned
+			$this->checkout->transaction->toggle_failed_transaction_status();
+			$payment_status = $payment->status();
+			if (
+				$payment_status === EEM_Payment::status_id_approved
+				|| $payment_status === EEM_Payment::status_id_pending
+			) {
+				return true;
+			} else {
+				return false;
+			}
+		} else if ($payment === true) {
+			// please note that offline payment methods will NOT make a payment,
+			// but instead just mark themselves as the PMD_ID on the transaction, and return true
+			$this->checkout->payment = $payment;
+			return true;
+		}
+		// where's my money?
+		return false;
+	}
+
+
+	/**
+	 * _last_second_ticket_verifications
+	 *
+	 * @access public
+	 * @return bool
+	 * @throws EE_Error
+	 */
+	protected function _last_second_ticket_verifications()
+	{
+		// don't bother re-validating if not a return visit
+		if (! $this->checkout->revisit) {
+			return true;
+		}
+		$registrations = $this->checkout->transaction->registrations();
+		if (empty($registrations)) {
+			return false;
+		}
+		foreach ($registrations as $registration) {
+			if ($registration instanceof EE_Registration && ! $registration->is_approved()) {
+				$event = $registration->event_obj();
+				if ($event instanceof EE_Event && $event->is_sold_out(true)) {
+					EE_Error::add_error(
+						apply_filters(
+							'FHEE__EE_SPCO_Reg_Step_Payment_Options___last_second_ticket_verifications__sold_out_events_msg',
+							sprintf(
+								esc_html__(
+									'It appears that the %1$s event that you were about to make a payment for has sold out since you first registered and/or arrived at this page. Please refresh the page and try again. If you have already made a partial payment towards this event, please contact the event administrator for a refund.',
+									'event_espresso'
+								),
+								$event->name()
+							)
+						),
+						__FILE__,
+						__FUNCTION__,
+						__LINE__
+					);
+					return false;
+				}
+			}
+		}
+		return true;
+	}
+
+
+	/**
+	 * redirect_form
+	 *
+	 * @access public
+	 * @return bool
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws ReflectionException
+	 * @throws \EventEspresso\core\exceptions\InvalidDataTypeException
+	 * @throws \EventEspresso\core\exceptions\InvalidInterfaceException
+	 */
+	public function redirect_form()
+	{
+		$payment_method_billing_info = $this->_payment_method_billing_info(
+			$this->_get_payment_method_for_selected_method_of_payment()
+		);
+		$html                        = $payment_method_billing_info->get_html();
+		$html                        .= $this->checkout->redirect_form;
+		EE_Registry::instance()->REQ->add_output($html);
+		return true;
+	}
+
+
+	/**
+	 * _billing_form_is_valid
+	 *
+	 * @access private
+	 * @return bool
+	 * @throws \EE_Error
+	 */
+	private function _billing_form_is_valid()
+	{
+		if (! $this->checkout->payment_method->type_obj()->has_billing_form()) {
+			return true;
+		}
+		if ($this->checkout->billing_form instanceof EE_Billing_Info_Form) {
+			if ($this->checkout->billing_form->was_submitted()) {
+				$this->checkout->billing_form->receive_form_submission();
+				if ($this->checkout->billing_form->is_valid()) {
+					return true;
+				}
+				$validation_errors = $this->checkout->billing_form->get_validation_errors_accumulated();
+				$error_strings     = array();
+				foreach ($validation_errors as $validation_error) {
+					if ($validation_error instanceof EE_Validation_Error) {
+						$form_section = $validation_error->get_form_section();
+						if ($form_section instanceof EE_Form_Input_Base) {
+							$label = $form_section->html_label_text();
+						} elseif ($form_section instanceof EE_Form_Section_Base) {
+							$label = $form_section->name();
+						} else {
+							$label = esc_html__('Validation Error', 'event_espresso');
+						}
+						$error_strings[] = sprintf('%1$s: %2$s', $label, $validation_error->getMessage());
+					}
+				}
+				EE_Error::add_error(
+					sprintf(
+						esc_html__(
+							'One or more billing form inputs are invalid and require correction before proceeding. %1$s %2$s',
+							'event_espresso'
+						),
+						'<br/>',
+						implode('<br/>', $error_strings)
+					),
+					__FILE__,
+					__FUNCTION__,
+					__LINE__
+				);
+			} else {
+				EE_Error::add_error(
+					esc_html__(
+						'The billing form was not submitted or something prevented it\'s submission.',
+						'event_espresso'
+					),
+					__FILE__,
+					__FUNCTION__,
+					__LINE__
+				);
+			}
+		} else {
+			EE_Error::add_error(
+				esc_html__('The submitted billing form is invalid possibly due to a technical reason.', 'event_espresso'),
+				__FILE__,
+				__FUNCTION__,
+				__LINE__
+			);
+		}
+		return false;
+	}
+
+
+	/**
+	 * _setup_primary_registrant_prior_to_payment
+	 * ensures that the primary registrant has a valid attendee object created with the critical details populated
+	 * (first & last name & email) and that both the transaction object and primary registration object have been saved
+	 * plz note that any other registrations will NOT be saved at this point (because they may not have any details
+	 * yet)
+	 *
+	 * @access private
+	 * @return bool
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws ReflectionException
+	 * @throws RuntimeException
+	 * @throws \EventEspresso\core\exceptions\InvalidDataTypeException
+	 * @throws \EventEspresso\core\exceptions\InvalidInterfaceException
+	 */
+	private function _setup_primary_registrant_prior_to_payment()
+	{
+		// check if transaction has a primary registrant and that it has a related Attendee object
+		// if not, then we need to at least gather some primary registrant data before attempting payment
+		if (
+			$this->checkout->billing_form instanceof EE_Billing_Attendee_Info_Form
+			&& ! $this->checkout->transaction_has_primary_registrant()
+			&& ! $this->_capture_primary_registration_data_from_billing_form()
+		) {
+			return false;
+		}
+		// because saving an object clears it's cache, we need to do the chevy shuffle
+		// grab the primary_registration object
+		$primary_registration = $this->checkout->transaction->primary_registration();
+		// at this point we'll consider a TXN to not have been failed
+		$this->checkout->transaction->toggle_failed_transaction_status();
+		// save the TXN ( which clears cached copy of primary_registration)
+		$this->checkout->transaction->save();
+		// grab TXN ID and save it to the primary_registration
+		$primary_registration->set_transaction_id($this->checkout->transaction->ID());
+		// save what we have so far
+		$primary_registration->save();
+		return true;
+	}
+
+
+	/**
+	 * _capture_primary_registration_data_from_billing_form
+	 *
+	 * @access private
+	 * @return bool
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws ReflectionException
+	 * @throws \EventEspresso\core\exceptions\InvalidDataTypeException
+	 * @throws \EventEspresso\core\exceptions\InvalidInterfaceException
+	 */
+	private function _capture_primary_registration_data_from_billing_form()
+	{
+		// convert billing form data into an attendee
+		$this->checkout->primary_attendee_obj = $this->checkout->billing_form->create_attendee_from_billing_form_data();
+		if (! $this->checkout->primary_attendee_obj instanceof EE_Attendee) {
+			EE_Error::add_error(
+				sprintf(
+					esc_html__(
+						'The billing form details could not be used for attendee details due to a technical issue.%sPlease try again or contact %s for assistance.',
+						'event_espresso'
+					),
+					'<br/>',
+					EE_Registry::instance()->CFG->organization->get_pretty('email')
+				),
+				__FILE__,
+				__FUNCTION__,
+				__LINE__
+			);
+			return false;
+		}
+		$primary_registration = $this->checkout->transaction->primary_registration();
+		if (! $primary_registration instanceof EE_Registration) {
+			EE_Error::add_error(
+				sprintf(
+					esc_html__(
+						'The primary registrant for this transaction could not be determined due to a technical issue.%sPlease try again or contact %s for assistance.',
+						'event_espresso'
+					),
+					'<br/>',
+					EE_Registry::instance()->CFG->organization->get_pretty('email')
+				),
+				__FILE__,
+				__FUNCTION__,
+				__LINE__
+			);
+			return false;
+		}
+		if (! $primary_registration->_add_relation_to($this->checkout->primary_attendee_obj, 'Attendee')
+			  instanceof
+			  EE_Attendee
+		) {
+			EE_Error::add_error(
+				sprintf(
+					esc_html__(
+						'The primary registrant could not be associated with this transaction due to a technical issue.%sPlease try again or contact %s for assistance.',
+						'event_espresso'
+					),
+					'<br/>',
+					EE_Registry::instance()->CFG->organization->get_pretty('email')
+				),
+				__FILE__,
+				__FUNCTION__,
+				__LINE__
+			);
+			return false;
+		}
+		/** @type EE_Registration_Processor $registration_processor */
+		$registration_processor = EE_Registry::instance()->load_class('Registration_Processor');
+		// at this point, we should have enough details about the registrant to consider the registration NOT incomplete
+		$registration_processor->toggle_incomplete_registration_status_to_default($primary_registration);
+		return true;
+	}
+
+
+	/**
+	 * _get_payment_method_for_selected_method_of_payment
+	 * retrieves a valid payment method
+	 *
+	 * @access public
+	 * @return EE_Payment_Method
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws ReflectionException
+	 * @throws \EventEspresso\core\exceptions\InvalidDataTypeException
+	 * @throws \EventEspresso\core\exceptions\InvalidInterfaceException
+	 */
+	private function _get_payment_method_for_selected_method_of_payment()
+	{
+		if ($this->checkout->selected_method_of_payment === 'events_sold_out') {
+			$this->_redirect_because_event_sold_out();
+			return null;
+		}
+		// get EE_Payment_Method object
+		if (isset($this->checkout->available_payment_methods[$this->checkout->selected_method_of_payment])) {
+			$payment_method = $this->checkout->available_payment_methods[$this->checkout->selected_method_of_payment];
+		} else {
+			// load EEM_Payment_Method
+			EE_Registry::instance()->load_model('Payment_Method');
+			/** @type EEM_Payment_Method $EEM_Payment_Method */
+			$EEM_Payment_Method = EE_Registry::instance()->LIB->EEM_Payment_Method;
+			$payment_method     = $EEM_Payment_Method->get_one_by_slug($this->checkout->selected_method_of_payment);
+		}
+		// verify $payment_method
+		if (! $payment_method instanceof EE_Payment_Method) {
+			// not a payment
+			EE_Error::add_error(
+				sprintf(
+					esc_html__(
+						'The selected method of payment could not be determined due to a technical issue.%sPlease try again or contact %s for assistance.',
+						'event_espresso'
+					),
+					'<br/>',
+					EE_Registry::instance()->CFG->organization->get_pretty('email')
+				),
+				__FILE__,
+				__FUNCTION__,
+				__LINE__
+			);
+			return null;
+		}
+		// and verify it has a valid Payment_Method Type object
+		if (! $payment_method->type_obj() instanceof EE_PMT_Base) {
+			// not a payment
+			EE_Error::add_error(
+				sprintf(
+					esc_html__(
+						'A valid payment method could not be determined due to a technical issue.%sPlease try again or contact %s for assistance.',
+						'event_espresso'
+					),
+					'<br/>',
+					EE_Registry::instance()->CFG->organization->get_pretty('email')
+				),
+				__FILE__,
+				__FUNCTION__,
+				__LINE__
+			);
+			return null;
+		}
+		return $payment_method;
+	}
+
+
+	/**
+	 *    _attempt_payment
+	 *
+	 * @access    private
+	 * @type    EE_Payment_Method $payment_method
+	 * @return mixed EE_Payment | boolean
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws ReflectionException
+	 * @throws \EventEspresso\core\exceptions\InvalidDataTypeException
+	 * @throws \EventEspresso\core\exceptions\InvalidInterfaceException
+	 */
+	private function _attempt_payment(EE_Payment_Method $payment_method)
+	{
+		$payment = null;
+		$this->checkout->transaction->save();
+		$payment_processor = EE_Registry::instance()->load_core('Payment_Processor');
+		if (! $payment_processor instanceof EE_Payment_Processor) {
+			return false;
+		}
+		try {
+			$payment_processor->set_revisit($this->checkout->revisit);
+			// generate payment object
+			$payment = $payment_processor->process_payment(
+				$payment_method,
+				$this->checkout->transaction,
+				$this->checkout->amount_owing,
+				$this->checkout->billing_form,
+				$this->_get_return_url($payment_method),
+				'CART',
+				$this->checkout->admin_request,
+				true,
+				$this->reg_step_url()
+			);
+		} catch (Exception $e) {
+			$this->_handle_payment_processor_exception($e);
+		}
+		return $payment;
+	}
+
+
+	/**
+	 * _handle_payment_processor_exception
+	 *
+	 * @access protected
+	 * @param \Exception $e
+	 * @return void
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws \EventEspresso\core\exceptions\InvalidDataTypeException
+	 * @throws \EventEspresso\core\exceptions\InvalidInterfaceException
+	 */
+	protected function _handle_payment_processor_exception(Exception $e)
+	{
+		EE_Error::add_error(
+			sprintf(
+				esc_html__(
+					'The payment could not br processed due to a technical issue.%1$sPlease try again or contact %2$s for assistance.||The following Exception was thrown in %4$s on line %5$s:%1$s%3$s',
+					'event_espresso'
+				),
+				'<br/>',
+				EE_Registry::instance()->CFG->organization->get_pretty('email'),
+				$e->getMessage(),
+				$e->getFile(),
+				$e->getLine()
+			),
+			__FILE__,
+			__FUNCTION__,
+			__LINE__
+		);
+	}
+
+
+	/**
+	 * _get_return_url
+	 *
+	 * @access protected
+	 * @param \EE_Payment_Method $payment_method
+	 * @return string
+	 * @throws \EE_Error
+	 */
+	protected function _get_return_url(EE_Payment_Method $payment_method)
+	{
+		$return_url = '';
+		switch ($payment_method->type_obj()->payment_occurs()) {
+			case EE_PMT_Base::offsite :
+				$return_url = add_query_arg(
+					array(
+						'action'                     => 'process_gateway_response',
+						'selected_method_of_payment' => $this->checkout->selected_method_of_payment,
+						'spco_txn'                   => $this->checkout->transaction->ID(),
+					),
+					$this->reg_step_url()
+				);
+				break;
+			case EE_PMT_Base::onsite :
+			case EE_PMT_Base::offline :
+				$return_url = $this->checkout->next_step->reg_step_url();
+				break;
+		}
+		return $return_url;
+	}
+
+
+	/**
+	 * _validate_payment
+	 *
+	 * @access private
+	 * @param EE_Payment $payment
+	 * @return EE_Payment|FALSE
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws \EventEspresso\core\exceptions\InvalidDataTypeException
+	 * @throws \EventEspresso\core\exceptions\InvalidInterfaceException
+	 */
+	private function _validate_payment($payment = null)
+	{
+		if ($this->checkout->payment_method->is_off_line()) {
+			return true;
+		}
+		// verify payment object
+		if (! $payment instanceof EE_Payment) {
+			// not a payment
+			EE_Error::add_error(
+				sprintf(
+					esc_html__(
+						'A valid payment was not generated due to a technical issue.%1$sPlease try again or contact %2$s for assistance.',
+						'event_espresso'
+					),
+					'<br/>',
+					EE_Registry::instance()->CFG->organization->get_pretty('email')
+				),
+				__FILE__,
+				__FUNCTION__,
+				__LINE__
+			);
+			return false;
+		}
+		return $payment;
+	}
+
+
+	/**
+	 * _post_payment_processing
+	 *
+	 * @access private
+	 * @param EE_Payment|bool $payment
+	 * @return bool
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws \EventEspresso\core\exceptions\InvalidDataTypeException
+	 * @throws \EventEspresso\core\exceptions\InvalidInterfaceException
+	 */
+	private function _post_payment_processing($payment = null)
+	{
+		// Off-Line payment?
+		if ($payment === true) {
+			//$this->_setup_redirect_for_next_step();
+			return true;
+			// On-Site payment?
+		} else if ($this->checkout->payment_method->is_on_site()) {
+			if (! $this->_process_payment_status($payment, EE_PMT_Base::onsite)) {
+				//$this->_setup_redirect_for_next_step();
+				$this->checkout->continue_reg = false;
+			}
+			// Off-Site payment?
+		} else if ($this->checkout->payment_method->is_off_site()) {
+			// if a payment object was made and it specifies a redirect url, then we'll setup that redirect info
+			if ($payment instanceof EE_Payment && $payment->redirect_url()) {
+				do_action('AHEE_log', __CLASS__, __FUNCTION__, $payment->redirect_url(), '$payment->redirect_url()');
+				$this->checkout->redirect      = true;
+				$this->checkout->redirect_form = $payment->redirect_form();
+				$this->checkout->redirect_url  = $this->reg_step_url('redirect_form');
+				// set JSON response
+				$this->checkout->json_response->set_redirect_form($this->checkout->redirect_form);
+				// and lastly, let's bump the payment status to pending
+				$payment->set_status(EEM_Payment::status_id_pending);
+				$payment->save();
+			} else {
+				// not a payment
+				$this->checkout->continue_reg = false;
+				EE_Error::add_error(
+					sprintf(
+						esc_html__(
+							'It appears the Off Site Payment Method was not configured properly.%sPlease try again or contact %s for assistance.',
+							'event_espresso'
+						),
+						'<br/>',
+						EE_Registry::instance()->CFG->organization->get_pretty('email')
+					),
+					__FILE__,
+					__FUNCTION__,
+					__LINE__
+				);
+			}
+		} else {
+			// ummm ya... not Off-Line, not On-Site, not off-Site ????
+			$this->checkout->continue_reg = false;
+			return false;
+		}
+		return $payment;
+	}
+
+
+	/**
+	 *    _process_payment_status
+	 *
+	 * @access private
+	 * @type    EE_Payment $payment
+	 * @param string       $payment_occurs
+	 * @return bool
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws \EventEspresso\core\exceptions\InvalidDataTypeException
+	 * @throws \EventEspresso\core\exceptions\InvalidInterfaceException
+	 */
+	private function _process_payment_status($payment, $payment_occurs = EE_PMT_Base::offline)
+	{
+		// off-line payment? carry on
+		if ($payment_occurs === EE_PMT_Base::offline) {
+			return true;
+		}
+		// verify payment validity
+		if ($payment instanceof EE_Payment) {
+			do_action('AHEE_log', __CLASS__, __FUNCTION__, $payment->status(), '$payment->status()');
+			$msg = $payment->gateway_response();
+			// check results
+			switch ($payment->status()) {
+				// good payment
+				case EEM_Payment::status_id_approved :
+					EE_Error::add_success(
+						esc_html__('Your payment was processed successfully.', 'event_espresso'),
+						__FILE__,
+						__FUNCTION__,
+						__LINE__
+					);
+					return true;
+					break;
+				// slow payment
+				case EEM_Payment::status_id_pending :
+					if (empty($msg)) {
+						$msg = esc_html__(
+							'Your payment appears to have been processed successfully, but the Instant Payment Notification has not yet been received. It should arrive shortly.',
+							'event_espresso'
+						);
+					}
+					EE_Error::add_success($msg, __FILE__, __FUNCTION__, __LINE__);
+					return true;
+					break;
+				// don't wanna payment
+				case EEM_Payment::status_id_cancelled :
+					if (empty($msg)) {
+						$msg = _n(
+							'Payment cancelled. Please try again.',
+							'Payment cancelled. Please try again or select another method of payment.',
+							count($this->checkout->available_payment_methods),
+							'event_espresso'
+						);
+					}
+					EE_Error::add_attention($msg, __FILE__, __FUNCTION__, __LINE__);
+					return false;
+					break;
+				// not enough payment
+				case EEM_Payment::status_id_declined :
+					if (empty($msg)) {
+						$msg = _n(
+							'We\'re sorry but your payment was declined. Please try again.',
+							'We\'re sorry but your payment was declined. Please try again or select another method of payment.',
+							count($this->checkout->available_payment_methods),
+							'event_espresso'
+						);
+					}
+					EE_Error::add_attention($msg, __FILE__, __FUNCTION__, __LINE__);
+					return false;
+					break;
+				// bad payment
+				case EEM_Payment::status_id_failed :
+					if (! empty($msg)) {
+						EE_Error::add_error($msg, __FILE__, __FUNCTION__, __LINE__);
+						return false;
+					}
+					// default to error below
+					break;
+			}
+		}
+		// off-site payment gateway responses are too unreliable, so let's just assume that
+		// the payment processing is just running slower than the registrant's request
+		if ($payment_occurs === EE_PMT_Base::offsite) {
+			return true;
+		}
+		EE_Error::add_error(
+			sprintf(
+				esc_html__(
+					'Your payment could not be processed successfully due to a technical issue.%sPlease try again or contact %s for assistance.',
+					'event_espresso'
+				),
+				'<br/>',
+				EE_Registry::instance()->CFG->organization->get_pretty('email')
+			),
+			__FILE__,
+			__FUNCTION__,
+			__LINE__
+		);
+		return false;
+	}
+
+
+
+
+
+
+	/********************************************************************************************************/
+	/**********************************  PROCESS GATEWAY RESPONSE  **********************************/
+	/********************************************************************************************************/
+	/**
+	 * process_gateway_response
+	 * this is the return point for Off-Site Payment Methods
+	 * It will attempt to "handle the IPN" if it appears that this has not already occurred,
+	 * otherwise, it will load up the last payment made for the TXN.
+	 * If the payment retrieved looks good, it will then either:
+	 *    complete the current step and allow advancement to the next reg step
+	 *        or present the payment options again
+	 *
+	 * @access private
+	 * @return EE_Payment|FALSE
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws ReflectionException
+	 * @throws \EventEspresso\core\exceptions\InvalidDataTypeException
+	 * @throws \EventEspresso\core\exceptions\InvalidInterfaceException
+	 * @throws \EventEspresso\core\exceptions\InvalidSessionDataException
+	 */
+	public function process_gateway_response()
+	{
+		$payment = null;
+		// how have they chosen to pay?
+		$this->checkout->selected_method_of_payment = $this->_get_selected_method_of_payment(true);
+		// get EE_Payment_Method object
+		if (! $this->checkout->payment_method = $this->_get_payment_method_for_selected_method_of_payment()) {
+			$this->checkout->continue_reg = false;
+			return false;
+		}
+		if (! $this->checkout->payment_method->is_off_site()) {
+			return false;
+		}
+		$this->_validate_offsite_return();
+		// DEBUG LOG
+		//$this->checkout->log(
+		//	__CLASS__, __FUNCTION__, __LINE__,
+		//	array(
+		//		'selected_method_of_payment' => $this->checkout->selected_method_of_payment,
+		//		'payment_method' => $this->checkout->payment_method,
+		//	),
+		//	true
+		//);
+		// verify TXN
+		if ($this->checkout->transaction instanceof EE_Transaction) {
+			$gateway = $this->checkout->payment_method->type_obj()->get_gateway();
+			if (! $gateway instanceof EE_Offsite_Gateway) {
+				$this->checkout->continue_reg = false;
+				return false;
+			}
+			$payment = $this->_process_off_site_payment($gateway);
+			$payment = $this->_process_cancelled_payments($payment);
+			$payment = $this->_validate_payment($payment);
+			// if payment was not declined by the payment gateway or cancelled by the registrant
+			if ($this->_process_payment_status($payment, EE_PMT_Base::offsite)) {
+				//$this->_setup_redirect_for_next_step();
+				// store that for later
+				$this->checkout->payment = $payment;
+				// mark this reg step as completed, as long as gateway doesn't use a separate IPN request,
+				// because we will complete this step during the IPN processing then
+				if ($gateway instanceof EE_Offsite_Gateway && ! $this->handle_IPN_in_this_request()) {
+					$this->set_completed();
+				}
+				return true;
+			}
+		}
+		// DEBUG LOG
+		//$this->checkout->log( __CLASS__, __FUNCTION__, __LINE__,
+		//	array( 'payment' => $payment )
+		//);
+		$this->checkout->continue_reg = false;
+		return false;
+	}
+
+
+	/**
+	 * _validate_return
+	 *
+	 * @access private
+	 * @return void
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws \EventEspresso\core\exceptions\InvalidDataTypeException
+	 * @throws \EventEspresso\core\exceptions\InvalidInterfaceException
+	 * @throws \EventEspresso\core\exceptions\InvalidSessionDataException
+	 */
+	private function _validate_offsite_return()
+	{
+		$TXN_ID = (int)EE_Registry::instance()->REQ->get('spco_txn', 0);
+		if ($TXN_ID !== $this->checkout->transaction->ID()) {
+			// Houston... we might have a problem
+			$invalid_TXN = false;
+			// first gather some info
+			$valid_TXN          = EEM_Transaction::instance()->get_one_by_ID($TXN_ID);
+			$primary_registrant = $valid_TXN instanceof EE_Transaction
+				? $valid_TXN->primary_registration()
+				: null;
+			// let's start by retrieving the cart for this TXN
+			$cart = $this->checkout->get_cart_for_transaction($this->checkout->transaction);
+			if ($cart instanceof EE_Cart) {
+				// verify that the current cart has tickets
+				$tickets = $cart->get_tickets();
+				if (empty($tickets)) {
+					$invalid_TXN = true;
+				}
+			} else {
+				$invalid_TXN = true;
+			}
+			$valid_TXN_SID = $primary_registrant instanceof EE_Registration
+				? $primary_registrant->session_ID()
+				: null;
+			// validate current Session ID and compare against valid TXN session ID
+			if (
+				$invalid_TXN // if this is already true, then skip other checks
+				|| EE_Session::instance()->id() === null
+				|| (
+					// WARNING !!!
+					// this could be PayPal sending back duplicate requests (ya they do that)
+					// or it **could** mean someone is simply registering AGAIN after having just done so
+					// so now we need to determine if this current TXN looks valid or not
+					// and whether this reg step has even been started ?
+					EE_Session::instance()->id() === $valid_TXN_SID
+					// really? you're half way through this reg step, but you never started it ?
+					&& $this->checkout->transaction->reg_step_completed($this->slug()) === false
+				)
+			) {
+				$invalid_TXN = true;
+			}
+			if ($invalid_TXN) {
+				// is the valid TXN completed ?
+				if ($valid_TXN instanceof EE_Transaction) {
+					// has this step even been started ?
+					$reg_step_completed = $valid_TXN->reg_step_completed($this->slug());
+					if ($reg_step_completed !== false && $reg_step_completed !== true) {
+						// so it **looks** like this is a double request from PayPal
+						// so let's try to pick up where we left off
+						$this->checkout->transaction = $valid_TXN;
+						$this->checkout->refresh_all_entities(true);
+						return;
+					}
+				}
+				// you appear to be lost?
+				$this->_redirect_wayward_request($primary_registrant);
+			}
+		}
+	}
+
+
+	/**
+	 * _redirect_wayward_request
+	 *
+	 * @access private
+	 * @param \EE_Registration|null $primary_registrant
+	 * @return bool
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws \EventEspresso\core\exceptions\InvalidDataTypeException
+	 * @throws \EventEspresso\core\exceptions\InvalidInterfaceException
+	 */
+	private function _redirect_wayward_request(EE_Registration $primary_registrant)
+	{
+		if (! $primary_registrant instanceof EE_Registration) {
+			// try redirecting based on the current TXN
+			$primary_registrant = $this->checkout->transaction instanceof EE_Transaction
+				? $this->checkout->transaction->primary_registration()
+				: null;
+		}
+		if (! $primary_registrant instanceof EE_Registration) {
+			EE_Error::add_error(
+				sprintf(
+					esc_html__(
+						'Invalid information was received from the Off-Site Payment Processor and your Transaction details could not be retrieved from the database.%1$sPlease try again or contact %2$s for assistance.',
+						'event_espresso'
+					),
+					'<br/>',
+					EE_Registry::instance()->CFG->organization->get_pretty('email')
+				),
+				__FILE__,
+				__FUNCTION__,
+				__LINE__
+			);
+			return false;
+		}
+		// make sure transaction is not locked
+		$this->checkout->transaction->unlock();
+		wp_safe_redirect(
+			add_query_arg(
+				array(
+					'e_reg_url_link' => $primary_registrant->reg_url_link(),
+				),
+				$this->checkout->thank_you_page_url
+			)
+		);
+		exit();
+	}
+
+
+	/**
+	 * _process_off_site_payment
+	 *
+	 * @access private
+	 * @param \EE_Offsite_Gateway $gateway
+	 * @return EE_Payment
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws \EventEspresso\core\exceptions\InvalidDataTypeException
+	 * @throws \EventEspresso\core\exceptions\InvalidInterfaceException
+	 */
+	private function _process_off_site_payment(EE_Offsite_Gateway $gateway)
+	{
+		try {
+			$request_data = \EE_Registry::instance()->REQ->params();
+			// if gateway uses_separate_IPN_request, then we don't have to process the IPN manually
+			$this->set_handle_IPN_in_this_request(
+				$gateway->handle_IPN_in_this_request($request_data, false)
+			);
+			if ($this->handle_IPN_in_this_request()) {
+				// get payment details and process results
+				/** @type EE_Payment_Processor $payment_processor */
+				$payment_processor = EE_Registry::instance()->load_core('Payment_Processor');
+				$payment           = $payment_processor->process_ipn(
+					$request_data,
+					$this->checkout->transaction,
+					$this->checkout->payment_method,
+					true,
+					false
+				);
+				//$payment_source = 'process_ipn';
+			} else {
+				$payment = $this->checkout->transaction->last_payment();
+				//$payment_source = 'last_payment';
+			}
+		} catch (Exception $e) {
+			// let's just eat the exception and try to move on using any previously set payment info
+			$payment = $this->checkout->transaction->last_payment();
+			//$payment_source = 'last_payment after Exception';
+			// but if we STILL don't have a payment object
+			if (! $payment instanceof EE_Payment) {
+				// then we'll object ! ( not object like a thing... but object like what a lawyer says ! )
+				$this->_handle_payment_processor_exception($e);
+			}
+		}
+		// DEBUG LOG
+		//$this->checkout->log( __CLASS__, __FUNCTION__, __LINE__,
+		//	array(
+		//		'process_ipn_payment' => $payment,
+		//		'payment_source'      => $payment_source,
+		//	)
+		//);
+		return $payment;
+	}
+
+
+	/**
+	 * _process_cancelled_payments
+	 * just makes sure that the payment status gets updated correctly
+	 * so tha tan error isn't generated during payment validation
+	 *
+	 * @access private
+	 * @param EE_Payment $payment
+	 * @return EE_Payment | FALSE
+	 * @throws \EE_Error
+	 */
+	private function _process_cancelled_payments($payment = null)
+	{
+		if (
+			$payment instanceof EE_Payment
+			&& isset($_REQUEST['ee_cancel_payment'])
+			&& $payment->status() === EEM_Payment::status_id_failed
+		) {
+			$payment->set_status(EEM_Payment::status_id_cancelled);
+		}
+		return $payment;
+	}
+
+
+	/**
+	 *    get_transaction_details_for_gateways
+	 *
+	 * @access    public
+	 * @return int
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws ReflectionException
+	 * @throws \EventEspresso\core\exceptions\InvalidDataTypeException
+	 * @throws \EventEspresso\core\exceptions\InvalidInterfaceException
+	 */
+	public function get_transaction_details_for_gateways()
+	{
+		$txn_details = array();
+		// ya gotta make a choice man
+		if (empty($this->checkout->selected_method_of_payment)) {
+			$txn_details = array(
+				'error' => esc_html__('Please select a method of payment before proceeding.', 'event_espresso'),
+			);
+		}
+		// get EE_Payment_Method object
+		if (
+			empty($txn_details)
+			&&
+			! $this->checkout->payment_method = $this->_get_payment_method_for_selected_method_of_payment()
+		) {
+			$txn_details = array(
+				'selected_method_of_payment' => $this->checkout->selected_method_of_payment,
+				'error'                      => esc_html__(
+					'A valid Payment Method could not be determined.',
+					'event_espresso'
+				),
+			);
+		}
+		if (empty($txn_details) && $this->checkout->transaction instanceof EE_Transaction) {
+			$return_url  = $this->_get_return_url($this->checkout->payment_method);
+			$txn_details = array(
+				'TXN_ID'         => $this->checkout->transaction->ID(),
+				'TXN_timestamp'  => $this->checkout->transaction->datetime(),
+				'TXN_total'      => $this->checkout->transaction->total(),
+				'TXN_paid'       => $this->checkout->transaction->paid(),
+				'TXN_reg_steps'  => $this->checkout->transaction->reg_steps(),
+				'STS_ID'         => $this->checkout->transaction->status_ID(),
+				'PMD_ID'         => $this->checkout->transaction->payment_method_ID(),
+				'payment_amount' => $this->checkout->amount_owing,
+				'return_url'     => $return_url,
+				'cancel_url'     => add_query_arg(array('ee_cancel_payment' => true), $return_url),
+				'notify_url'     => EE_Config::instance()->core->txn_page_url(
+					array(
+						'e_reg_url_link'    => $this->checkout->transaction->primary_registration()->reg_url_link(),
+						'ee_payment_method' => $this->checkout->payment_method->slug(),
+					)
+				),
+			);
+		}
+		echo wp_json_encode($txn_details);
+		exit();
+	}
+
+
+	/**
+	 *    __sleep
+	 * to conserve db space, let's remove the reg_form and the EE_Checkout object from EE_SPCO_Reg_Step objects upon
+	 * serialization EE_Checkout will handle the reimplementation of itself upon waking, but we won't bother with the
+	 * reg form, because if needed, it will be regenerated anyways
+	 *
+	 * @return array
+	 */
+	public function __sleep()
+	{
+		// remove the reg form and the checkout
+		return array_diff(array_keys(get_object_vars($this)), array('reg_form', 'checkout', 'line_item_display'));
+	}
 }

admin_pages/transactions/Transactions_Admin_Page.core.php

Indentation +2433 added lines, -2433 removed lines

@@ -16,2437 +16,2437 @@
 class Transactions_Admin_Page extends EE_Admin_Page
 {
 
-    /**
-     * @var EE_Transaction
-     */
-    private $_transaction;
-
-    /**
-     * @var EE_Session
-     */
-    private $_session;
-
-    /**
-     * @var array $_txn_status
-     */
-    private static $_txn_status;
-
-    /**
-     * @var array $_pay_status
-     */
-    private static $_pay_status;
-
-    /**
-     * @var array $_existing_reg_payment_REG_IDs
-     */
-    protected $_existing_reg_payment_REG_IDs = null;
-
-
-    /**
-     * @Constructor
-     * @access public
-     * @param bool $routing
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws ReflectionException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     */
-    public function __construct($routing = true)
-    {
-        parent::__construct($routing);
-    }
-
-
-    /**
-     *    _init_page_props
-     *
-     * @return void
-     */
-    protected function _init_page_props()
-    {
-        $this->page_slug        = TXN_PG_SLUG;
-        $this->page_label       = esc_html__('Transactions', 'event_espresso');
-        $this->_admin_base_url  = TXN_ADMIN_URL;
-        $this->_admin_base_path = TXN_ADMIN;
-    }
-
-
-    /**
-     *    _ajax_hooks
-     *
-     * @return void
-     */
-    protected function _ajax_hooks()
-    {
-        add_action('wp_ajax_espresso_apply_payment', array($this, 'apply_payments_or_refunds'));
-        add_action('wp_ajax_espresso_apply_refund', array($this, 'apply_payments_or_refunds'));
-        add_action('wp_ajax_espresso_delete_payment', array($this, 'delete_payment'));
-    }
-
-
-    /**
-     *    _define_page_props
-     *
-     * @return void
-     */
-    protected function _define_page_props()
-    {
-        $this->_admin_page_title = $this->page_label;
-        $this->_labels           = array(
-            'buttons' => array(
-                'add'    => esc_html__('Add New Transaction', 'event_espresso'),
-                'edit'   => esc_html__('Edit Transaction', 'event_espresso'),
-                'delete' => esc_html__('Delete Transaction', 'event_espresso'),
-            ),
-        );
-    }
-
-
-    /**
-     *        grab url requests and route them
-     *
-     * @access private
-     * @return void
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     */
-    public function _set_page_routes()
-    {
-
-        $this->_set_transaction_status_array();
-
-        $txn_id = ! empty($this->_req_data['TXN_ID'])
-                  && ! is_array($this->_req_data['TXN_ID'])
-            ? $this->_req_data['TXN_ID']
-            : 0;
-
-        $this->_page_routes = array(
-
-            'default' => array(
-                'func'       => '_transactions_overview_list_table',
-                'capability' => 'ee_read_transactions',
-            ),
-
-            'view_transaction' => array(
-                'func'       => '_transaction_details',
-                'capability' => 'ee_read_transaction',
-                'obj_id'     => $txn_id,
-            ),
-
-            'send_payment_reminder' => array(
-                'func'       => '_send_payment_reminder',
-                'noheader'   => true,
-                'capability' => 'ee_send_message',
-            ),
-
-            'espresso_apply_payment' => array(
-                'func'       => 'apply_payments_or_refunds',
-                'noheader'   => true,
-                'capability' => 'ee_edit_payments',
-            ),
-
-            'espresso_apply_refund' => array(
-                'func'       => 'apply_payments_or_refunds',
-                'noheader'   => true,
-                'capability' => 'ee_edit_payments',
-            ),
-
-            'espresso_delete_payment' => array(
-                'func'       => 'delete_payment',
-                'noheader'   => true,
-                'capability' => 'ee_delete_payments',
-            ),
-
-        );
-    }
-
-
-    protected function _set_page_config()
-    {
-        $this->_page_config = array(
-            'default'          => array(
-                'nav'           => array(
-                    'label' => esc_html__('Overview', 'event_espresso'),
-                    'order' => 10,
-                ),
-                'list_table'    => 'EE_Admin_Transactions_List_Table',
-                'help_tabs'     => array(
-                    'transactions_overview_help_tab'                       => array(
-                        'title'    => esc_html__('Transactions Overview', 'event_espresso'),
-                        'filename' => 'transactions_overview',
-                    ),
-                    'transactions_overview_table_column_headings_help_tab' => array(
-                        'title'    => esc_html__('Transactions Table Column Headings', 'event_espresso'),
-                        'filename' => 'transactions_overview_table_column_headings',
-                    ),
-                    'transactions_overview_views_filters_help_tab'         => array(
-                        'title'    => esc_html__('Transaction Views & Filters & Search', 'event_espresso'),
-                        'filename' => 'transactions_overview_views_filters_search',
-                    ),
-                ),
-                'help_tour'     => array('Transactions_Overview_Help_Tour'),
-                /**
-                 * commented out because currently we are not displaying tips for transaction list table status but this
-                 * may change in a later iteration so want to keep the code for then.
-                 */
-                //'qtips' => array( 'Transactions_List_Table_Tips' ),
-                'require_nonce' => false,
-            ),
-            'view_transaction' => array(
-                'nav'       => array(
-                    'label'      => esc_html__('View Transaction', 'event_espresso'),
-                    'order'      => 5,
-                    'url'        => isset($this->_req_data['TXN_ID'])
-                        ? add_query_arg(array('TXN_ID' => $this->_req_data['TXN_ID']), $this->_current_page_view_url)
-                        : $this->_admin_base_url,
-                    'persistent' => false,
-                ),
-                'help_tabs' => array(
-                    'transactions_view_transaction_help_tab'                                              => array(
-                        'title'    => esc_html__('View Transaction', 'event_espresso'),
-                        'filename' => 'transactions_view_transaction',
-                    ),
-                    'transactions_view_transaction_transaction_details_table_help_tab'                    => array(
-                        'title'    => esc_html__('Transaction Details Table', 'event_espresso'),
-                        'filename' => 'transactions_view_transaction_transaction_details_table',
-                    ),
-                    'transactions_view_transaction_attendees_registered_help_tab'                         => array(
-                        'title'    => esc_html__('Attendees Registered', 'event_espresso'),
-                        'filename' => 'transactions_view_transaction_attendees_registered',
-                    ),
-                    'transactions_view_transaction_views_primary_registrant_billing_information_help_tab' => array(
-                        'title'    => esc_html__('Primary Registrant & Billing Information', 'event_espresso'),
-                        'filename' => 'transactions_view_transaction_primary_registrant_billing_information',
-                    ),
-                ),
-                'qtips'     => array('Transaction_Details_Tips'),
-                'help_tour' => array('Transaction_Details_Help_Tour'),
-                'metaboxes' => array('_transaction_details_metaboxes'),
-
-                'require_nonce' => false,
-            ),
-        );
-    }
-
-
-    /**
-     * The below methods aren't used by this class currently
-     */
-    protected function _add_screen_options()
-    {
-        //noop
-    }
-
-    protected function _add_feature_pointers()
-    {
-        //noop
-    }
-
-    public function admin_init()
-    {
-        // IF a registration was JUST added via the admin...
-        if (isset(
-            $this->_req_data['redirect_from'],
-            $this->_req_data['EVT_ID'],
-            $this->_req_data['event_name']
-        )) {
-            // then set a cookie so that we can block any attempts to use
-            // the back button as a way to enter another registration.
-            setcookie(
-                'ee_registration_added',
-                $this->_req_data['EVT_ID'], time() + WEEK_IN_SECONDS, '/'
-            );
-            // and update the global
-            $_COOKIE['ee_registration_added'] = $this->_req_data['EVT_ID'];
-        }
-        EE_Registry::$i18n_js_strings['invalid_server_response'] = esc_html__(
-            'An error occurred! Your request may have been processed, but a valid response from the server was not received. Please refresh the page and try again.',
-            'event_espresso'
-        );
-        EE_Registry::$i18n_js_strings['error_occurred']          = esc_html__(
-            'An error occurred! Please refresh the page and try again.',
-            'event_espresso'
-        );
-        EE_Registry::$i18n_js_strings['txn_status_array']        = self::$_txn_status;
-        EE_Registry::$i18n_js_strings['pay_status_array']        = self::$_pay_status;
-        EE_Registry::$i18n_js_strings['payments_total']          = esc_html__('Payments Total', 'event_espresso');
-        EE_Registry::$i18n_js_strings['transaction_overpaid']    = esc_html__(
-            'This transaction has been overpaid ! Payments Total',
-            'event_espresso'
-        );
-    }
-
-    public function admin_notices()
-    {
-        //noop
-    }
-
-    public function admin_footer_scripts()
-    {
-        //noop
-    }
-
-
-    /**
-     * _set_transaction_status_array
-     * sets list of transaction statuses
-     *
-     * @access private
-     * @return void
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     */
-    private function _set_transaction_status_array()
-    {
-        self::$_txn_status = EEM_Transaction::instance()->status_array(true);
-    }
-
-
-    /**
-     * get_transaction_status_array
-     * return the transaction status array for wp_list_table
-     *
-     * @access public
-     * @return array
-     */
-    public function get_transaction_status_array()
-    {
-        return self::$_txn_status;
-    }
-
-
-    /**
-     *    get list of payment statuses
-     *
-     * @access private
-     * @return void
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     */
-    private function _get_payment_status_array()
-    {
-        self::$_pay_status                      = EEM_Payment::instance()->status_array(true);
-        $this->_template_args['payment_status'] = self::$_pay_status;
-
-    }
-
-
-    /**
-     *    _add_screen_options_default
-     *
-     * @access protected
-     * @return void
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     */
-    protected function _add_screen_options_default()
-    {
-        $this->_per_page_screen_option();
-    }
-
-
-    /**
-     * load_scripts_styles
-     *
-     * @access public
-     * @return void
-     */
-    public function load_scripts_styles()
-    {
-        //enqueue style
-        wp_register_style(
-            'espresso_txn',
-            TXN_ASSETS_URL . 'espresso_transactions_admin.css',
-            array(),
-            EVENT_ESPRESSO_VERSION
-        );
-        wp_enqueue_style('espresso_txn');
-        //scripts
-        wp_register_script('espresso_txn', TXN_ASSETS_URL . 'espresso_transactions_admin.js', array(
-            'ee_admin_js',
-            'ee-datepicker',
-            'jquery-ui-datepicker',
-            'jquery-ui-draggable',
-            'ee-dialog',
-            'ee-accounting',
-            'ee-serialize-full-array',
-        ), EVENT_ESPRESSO_VERSION, true);
-        wp_enqueue_script('espresso_txn');
-    }
-
-
-    /**
-     *    load_scripts_styles_view_transaction
-     *
-     * @access public
-     * @return void
-     */
-    public function load_scripts_styles_view_transaction()
-    {
-        //styles
-        wp_enqueue_style('espresso-ui-theme');
-    }
-
-
-    /**
-     *    load_scripts_styles_default
-     *
-     * @access public
-     * @return void
-     */
-    public function load_scripts_styles_default()
-    {
-        //styles
-        wp_enqueue_style('espresso-ui-theme');
-    }
-
-
-    /**
-     *    _set_list_table_views_default
-     *
-     * @access protected
-     * @return void
-     */
-    protected function _set_list_table_views_default()
-    {
-        $this->_views = array(
-            'all'       => array(
-                'slug'  => 'all',
-                'label' => esc_html__('View All Transactions', 'event_espresso'),
-                'count' => 0,
-            ),
-            'abandoned' => array(
-                'slug'  => 'abandoned',
-                'label' => esc_html__('Abandoned Transactions', 'event_espresso'),
-                'count' => 0,
-            ),
-            'failed'    => array(
-                'slug'  => 'failed',
-                'label' => esc_html__('Failed Transactions', 'event_espresso'),
-                'count' => 0,
-            ),
-        );
-    }
-
-
-    /**
-     * _set_transaction_object
-     * This sets the _transaction property for the transaction details screen
-     *
-     * @access private
-     * @return void
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws RuntimeException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     * @throws ReflectionException
-     */
-    private function _set_transaction_object()
-    {
-        if ($this->_transaction instanceof EE_Transaction) {
-            return;
-        } //get out we've already set the object
-
-        $TXN_ID = ! empty($this->_req_data['TXN_ID'])
-            ? absint($this->_req_data['TXN_ID'])
-            : false;
-
-        //get transaction object
-        $this->_transaction = EEM_Transaction::instance()->get_one_by_ID($TXN_ID);
-        $this->_session     = $this->_transaction instanceof EE_Transaction
-            ? $this->_transaction->get('TXN_session_data')
-            : null;
-        $this->_transaction->verify_abandoned_transaction_status();
-
-        if (! $this->_transaction instanceof EE_Transaction) {
-            $error_msg = sprintf(
-                esc_html__(
-                    'An error occurred and the details for the transaction with the ID # %d could not be retrieved.',
-                    'event_espresso'
-                ),
-                $TXN_ID
-            );
-            EE_Error::add_error($error_msg, __FILE__, __FUNCTION__, __LINE__);
-        }
-    }
-
-
-    /**
-     *    _transaction_legend_items
-     *
-     * @access protected
-     * @return array
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws ReflectionException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     */
-    protected function _transaction_legend_items()
-    {
-        EE_Registry::instance()->load_helper('MSG_Template');
-        $items = array();
-
-        if (EE_Registry::instance()->CAP->current_user_can(
-            'ee_read_global_messages',
-            'view_filtered_messages'
-        )) {
-            $related_for_icon = EEH_MSG_Template::get_message_action_icon('see_notifications_for');
-            if (is_array($related_for_icon)
-                && isset($related_for_icon['css_class'], $related_for_icon['label'])
-            ) {
-                $items['view_related_messages'] = array(
-                    'class' => $related_for_icon['css_class'],
-                    'desc'  => $related_for_icon['label'],
-                );
-            }
-        }
-
-        $items = apply_filters(
-            'FHEE__Transactions_Admin_Page___transaction_legend_items__items',
-            array_merge(
-                $items,
-                array(
-                    'view_details'          => array(
-                        'class' => 'dashicons dashicons-cart',
-                        'desc'  => esc_html__('View Transaction Details', 'event_espresso'),
-                    ),
-                    'view_invoice'          => array(
-                        'class' => 'dashicons dashicons-media-spreadsheet',
-                        'desc'  => esc_html__('View Transaction Invoice', 'event_espresso'),
-                    ),
-                    'view_receipt'          => array(
-                        'class' => 'dashicons dashicons-media-default',
-                        'desc'  => esc_html__('View Transaction Receipt', 'event_espresso'),
-                    ),
-                    'view_registration'     => array(
-                        'class' => 'dashicons dashicons-clipboard',
-                        'desc'  => esc_html__('View Registration Details', 'event_espresso'),
-                    ),
-                    'payment_overview_link' => array(
-                        'class' => 'dashicons dashicons-money',
-                        'desc'  => esc_html__('Make Payment on Frontend', 'event_espresso'),
-                    ),
-                )
-            )
-        );
-
-        if (EE_Registry::instance()->CAP->current_user_can(
-            'ee_send_message',
-            'espresso_transactions_send_payment_reminder'
-        )) {
-            if (EEH_MSG_Template::is_mt_active('payment_reminder')) {
-                $items['send_payment_reminder'] = array(
-                    'class' => 'dashicons dashicons-email-alt',
-                    'desc'  => esc_html__('Send Payment Reminder', 'event_espresso'),
-                );
-            } else {
-                $items['blank*'] = array(
-                    'class' => '',
-                    'desc'  => '',
-                );
-            }
-        } else {
-            $items['blank*'] = array(
-                'class' => '',
-                'desc'  => '',
-            );
-        }
-        $more_items = apply_filters(
-            'FHEE__Transactions_Admin_Page___transaction_legend_items__more_items',
-            array(
-                'overpaid'   => array(
-                    'class' => 'ee-status-legend ee-status-legend-' . EEM_Transaction::overpaid_status_code,
-                    'desc'  => EEH_Template::pretty_status(
-                        EEM_Transaction::overpaid_status_code,
-                        false,
-                        'sentence'
-                    ),
-                ),
-                'complete'   => array(
-                    'class' => 'ee-status-legend ee-status-legend-' . EEM_Transaction::complete_status_code,
-                    'desc'  => EEH_Template::pretty_status(
-                        EEM_Transaction::complete_status_code,
-                        false,
-                        'sentence'
-                    ),
-                ),
-                'incomplete' => array(
-                    'class' => 'ee-status-legend ee-status-legend-' . EEM_Transaction::incomplete_status_code,
-                    'desc'  => EEH_Template::pretty_status(
-                        EEM_Transaction::incomplete_status_code,
-                        false,
-                        'sentence'
-                    ),
-                ),
-                'abandoned'  => array(
-                    'class' => 'ee-status-legend ee-status-legend-' . EEM_Transaction::abandoned_status_code,
-                    'desc'  => EEH_Template::pretty_status(
-                        EEM_Transaction::abandoned_status_code,
-                        false,
-                        'sentence'
-                    ),
-                ),
-                'failed'     => array(
-                    'class' => 'ee-status-legend ee-status-legend-' . EEM_Transaction::failed_status_code,
-                    'desc'  => EEH_Template::pretty_status(
-                        EEM_Transaction::failed_status_code,
-                        false,
-                        'sentence'
-                    ),
-                ),
-            )
-        );
-
-        return array_merge($items, $more_items);
-    }
-
-
-    /**
-     *    _transactions_overview_list_table
-     *
-     * @access protected
-     * @return void
-     * @throws DomainException
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     * @throws ReflectionException
-     */
-    protected function _transactions_overview_list_table()
-    {
-        $this->_admin_page_title = esc_html__('Transactions', 'event_espresso');
-        $event = isset($this->_req_data['EVT_ID'])
-            ? EEM_Event::instance()->get_one_by_ID($this->_req_data['EVT_ID'])
-            : null;
-        $this->_template_args['admin_page_header'] = $event instanceof EE_Event
-            ? sprintf(
-                esc_html__(
-                    '%sViewing Transactions for the Event: %s%s',
-                    'event_espresso'
-                ),
-                '<h3>',
-                '<a href="'
-                . EE_Admin_Page::add_query_args_and_nonce(
-                    array('action' => 'edit', 'post' => $event->ID()),
-                    EVENTS_ADMIN_URL
-                )
-                . '" title="'
-                . esc_attr__(
-                    'Click to Edit event',
-                    'event_espresso'
-                )
-                . '">' . $event->get('EVT_name') . '</a>',
-                '</h3>'
-            )
-            : '';
-        $this->_template_args['after_list_table']  = $this->_display_legend($this->_transaction_legend_items());
-        $this->display_admin_list_table_page_with_no_sidebar();
-    }
-
-
-    /**
-     *    _transaction_details
-     * generates HTML for the View Transaction Details Admin page
-     *
-     * @access protected
-     * @return void
-     * @throws DomainException
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     * @throws RuntimeException
-     * @throws ReflectionException
-     */
-    protected function _transaction_details()
-    {
-        do_action('AHEE__Transactions_Admin_Page__transaction_details__start', $this->_transaction);
-
-        $this->_set_transaction_status_array();
-
-        $this->_template_args                      = array();
-        $this->_template_args['transactions_page'] = $this->_wp_page_slug;
-
-        $this->_set_transaction_object();
-
-        $primary_registration = $this->_transaction->primary_registration();
-        $attendee = $primary_registration instanceof EE_Registration
-            ? $primary_registration->attendee()
-            : null;
-
-        $this->_template_args['txn_nmbr']['value'] = $this->_transaction->ID();
-        $this->_template_args['txn_nmbr']['label'] = esc_html__('Transaction Number', 'event_espresso');
-
-        $this->_template_args['txn_datetime']['value'] = $this->_transaction->get_i18n_datetime('TXN_timestamp');
-        $this->_template_args['txn_datetime']['label'] = esc_html__('Date', 'event_espresso');
-
-        $this->_template_args['txn_status']['value'] = self::$_txn_status[$this->_transaction->get('STS_ID')];
-        $this->_template_args['txn_status']['label'] = esc_html__('Transaction Status', 'event_espresso');
-        $this->_template_args['txn_status']['class'] = 'status-' . $this->_transaction->get('STS_ID');
-
-        $this->_template_args['grand_total'] = $this->_transaction->get('TXN_total');
-        $this->_template_args['total_paid']  = $this->_transaction->get('TXN_paid');
-
-        $amount_due = $this->_transaction->get('TXN_total') - $this->_transaction->get('TXN_paid');
-        $this->_template_args['amount_due'] = EEH_Template::format_currency(
-            $amount_due,
-            true
-        );
-        if (EE_Registry::instance()->CFG->currency->sign_b4) {
-            $this->_template_args['amount_due'] = EE_Registry::instance()->CFG->currency->sign
-                                                  . $this->_template_args['amount_due'];
-        } else {
-            $this->_template_args['amount_due'] .= EE_Registry::instance()->CFG->currency->sign;
-        }
-        $this->_template_args['amount_due_class'] = '';
-
-        if ($this->_transaction->get('TXN_paid') == $this->_transaction->get('TXN_total')) {
-            // paid in full
-            $this->_template_args['amount_due'] = false;
-        } elseif ($this->_transaction->get('TXN_paid') > $this->_transaction->get('TXN_total')) {
-            // overpaid
-            $this->_template_args['amount_due_class'] = 'txn-overview-no-payment-spn';
-        } elseif ($this->_transaction->get('TXN_total') > 0
-                  && $this->_transaction->get('TXN_paid') > 0
-        ) {
-            // monies owing
-            $this->_template_args['amount_due_class'] = 'txn-overview-part-payment-spn';
-        } elseif ($this->_transaction->get('TXN_total') > 0
-                  && $this->_transaction->get('TXN_paid') == 0
-        ) {
-            // no payments made yet
-            $this->_template_args['amount_due_class'] = 'txn-overview-no-payment-spn';
-        } elseif ($this->_transaction->get('TXN_total') == 0) {
-            // free event
-            $this->_template_args['amount_due'] = false;
-        }
-
-        $payment_method = $this->_transaction->payment_method();
-
-        $this->_template_args['method_of_payment_name'] = $payment_method instanceof EE_Payment_Method
-            ? $payment_method->admin_name()
-            : esc_html__('Unknown', 'event_espresso');
-
-        $this->_template_args['currency_sign'] = EE_Registry::instance()->CFG->currency->sign;
-        // link back to overview
-        $this->_template_args['txn_overview_url'] = ! empty($_SERVER['HTTP_REFERER'])
-            ? $_SERVER['HTTP_REFERER']
-            : TXN_ADMIN_URL;
-
-
-        // next link
-        $next_txn                                 = $this->_transaction->next(
-            null,
-            array(array('STS_ID' => array('!=', EEM_Transaction::failed_status_code))),
-            'TXN_ID'
-        );
-        $this->_template_args['next_transaction'] = $next_txn
-            ? $this->_next_link(
-                EE_Admin_Page::add_query_args_and_nonce(
-                    array('action' => 'view_transaction', 'TXN_ID' => $next_txn['TXN_ID']),
-                    TXN_ADMIN_URL
-                ),
-                'dashicons dashicons-arrow-right ee-icon-size-22'
-            )
-            : '';
-        // previous link
-        $previous_txn                                 = $this->_transaction->previous(
-            null,
-            array(array('STS_ID' => array('!=', EEM_Transaction::failed_status_code))),
-            'TXN_ID'
-        );
-        $this->_template_args['previous_transaction'] = $previous_txn
-            ? $this->_previous_link(
-                EE_Admin_Page::add_query_args_and_nonce(
-                    array('action' => 'view_transaction', 'TXN_ID' => $previous_txn['TXN_ID']),
-                    TXN_ADMIN_URL
-                ),
-                'dashicons dashicons-arrow-left ee-icon-size-22'
-            )
-            : '';
-
-        // were we just redirected here after adding a new registration ???
-        if (isset(
-            $this->_req_data['redirect_from'],
-            $this->_req_data['EVT_ID'],
-            $this->_req_data['event_name']
-        )) {
-            if (EE_Registry::instance()->CAP->current_user_can(
-                'ee_edit_registrations',
-                'espresso_registrations_new_registration',
-                $this->_req_data['EVT_ID']
-            )) {
-                $this->_admin_page_title .= '<a id="add-new-registration" class="add-new-h2 button-primary" href="';
-                $this->_admin_page_title .= EE_Admin_Page::add_query_args_and_nonce(
-                    array(
-                        'page'     => 'espresso_registrations',
-                        'action'   => 'new_registration',
-                        'return'   => 'default',
-                        'TXN_ID'   => $this->_transaction->ID(),
-                        'event_id' => $this->_req_data['EVT_ID'],
-                    ),
-                    REG_ADMIN_URL
-                );
-                $this->_admin_page_title .= '">';
-
-                $this->_admin_page_title .= sprintf(
-                    esc_html__('Add Another New Registration to Event: "%1$s" ?', 'event_espresso'),
-                    htmlentities(urldecode($this->_req_data['event_name']), ENT_QUOTES, 'UTF-8')
-                );
-                $this->_admin_page_title .= '</a>';
-            }
-            EE_Registry::instance()->SSN->clear_session(__CLASS__, __FUNCTION__);
-        }
-        // grab messages at the last second
-        $this->_template_args['notices'] = EE_Error::get_notices();
-        // path to template
-        $template_path                             = TXN_TEMPLATE_PATH . 'txn_admin_details_header.template.php';
-        $this->_template_args['admin_page_header'] = EEH_Template::display_template(
-            $template_path,
-            $this->_template_args,
-            true
-        );
-
-        // the details template wrapper
-        $this->display_admin_page_with_sidebar();
-
-    }
-
-
-    /**
-     *        _transaction_details_metaboxes
-     *
-     * @access protected
-     * @return void
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     * @throws RuntimeException
-     * @throws ReflectionException
-     */
-    protected function _transaction_details_metaboxes()
-    {
-
-        $this->_set_transaction_object();
-
-        add_meta_box(
-            'edit-txn-details-mbox',
-            esc_html__('Transaction Details', 'event_espresso'),
-            array($this, 'txn_details_meta_box'),
-            $this->_wp_page_slug,
-            'normal',
-            'high'
-        );
-        add_meta_box(
-            'edit-txn-attendees-mbox',
-            esc_html__('Attendees Registered in this Transaction', 'event_espresso'),
-            array($this, 'txn_attendees_meta_box'),
-            $this->_wp_page_slug,
-            'normal',
-            'high',
-            array('TXN_ID' => $this->_transaction->ID())
-        );
-        add_meta_box(
-            'edit-txn-registrant-mbox',
-            esc_html__('Primary Contact', 'event_espresso'),
-            array($this, 'txn_registrant_side_meta_box'),
-            $this->_wp_page_slug,
-            'side',
-            'high'
-        );
-        add_meta_box(
-            'edit-txn-billing-info-mbox',
-            esc_html__('Billing Information', 'event_espresso'),
-            array($this, 'txn_billing_info_side_meta_box'),
-            $this->_wp_page_slug,
-            'side',
-            'high'
-        );
-    }
-
-
-    /**
-     * Callback for transaction actions metabox.
-     *
-     * @param EE_Transaction|null $transaction
-     * @throws DomainException
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     * @throws ReflectionException
-     * @throws RuntimeException
-     */
-    public function getActionButtons(EE_Transaction $transaction = null)
-    {
-        $content = '';
-        $actions = array();
-        if (! $transaction instanceof EE_Transaction) {
-            return $content;
-        }
-        /** @var EE_Registration $primary_registration */
-        $primary_registration = $transaction->primary_registration();
-        $attendee = $primary_registration instanceof EE_Registration
-            ? $primary_registration->attendee()
-            : null;
-
-        if ($attendee instanceof EE_Attendee
-            && EE_Registry::instance()->CAP->current_user_can(
-                'ee_send_message',
-                'espresso_transactions_send_payment_reminder'
-            )
-        ) {
-            $actions['payment_reminder'] =
-                EEH_MSG_Template::is_mt_active('payment_reminder')
-                && $this->_transaction->get('STS_ID') !== EEM_Transaction::complete_status_code
-                && $this->_transaction->get('STS_ID') !== EEM_Transaction::overpaid_status_code
-                    ? EEH_Template::get_button_or_link(
-                        EE_Admin_Page::add_query_args_and_nonce(
-                            array(
-                                'action'      => 'send_payment_reminder',
-                                'TXN_ID'      => $this->_transaction->ID(),
-                                'redirect_to' => 'view_transaction',
-                            ),
-                            TXN_ADMIN_URL
-                        ),
-                        esc_html__(' Send Payment Reminder', 'event_espresso'),
-                        'button secondary-button',
-                        'dashicons dashicons-email-alt'
-                    )
-                    : '';
-        }
-
-        if ($primary_registration instanceof EE_Registration
-            && EEH_MSG_Template::is_mt_active('receipt')
-        ) {
-            $actions['receipt'] = EEH_Template::get_button_or_link(
-                $primary_registration->receipt_url(),
-                esc_html__('View Receipt', 'event_espresso'),
-                'button secondary-button',
-                'dashicons dashicons-media-default'
-            );
-        }
-
-        if ($primary_registration instanceof EE_Registration
-            && EEH_MSG_Template::is_mt_active('invoice')
-        ) {
-            $actions['invoice'] = EEH_Template::get_button_or_link(
-                $primary_registration->invoice_url(),
-                esc_html__('View Invoice', 'event_espresso'),
-                'button secondary-button',
-                'dashicons dashicons-media-spreadsheet'
-            );
-        }
-        $actions = array_filter(
-            apply_filters('FHEE__Transactions_Admin_Page__getActionButtons__actions', $actions, $transaction)
-        );
-        if ($actions) {
-            $content = '<ul>';
-            $content .= '<li>' . implode('</li><li>', $actions) . '</li>';
-            $content .= '</uL>';
-        }
-        return $content;
-    }
-
-
-    /**
-     * txn_details_meta_box
-     * generates HTML for the Transaction main meta box
-     *
-     * @return void
-     * @throws DomainException
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     * @throws RuntimeException
-     * @throws ReflectionException
-     */
-    public function txn_details_meta_box()
-    {
-        $this->_set_transaction_object();
-        $this->_template_args['TXN_ID']   = $this->_transaction->ID();
-        $this->_template_args['attendee'] = $this->_transaction->primary_registration() instanceof EE_Registration
-            ? $this->_transaction->primary_registration()->attendee()
-            : null;
-        $this->_template_args['can_edit_payments'] = EE_Registry::instance()->CAP->current_user_can(
-            'ee_edit_payments',
-            'apply_payment_or_refund_from_registration_details'
-        );
-        $this->_template_args['can_delete_payments'] = EE_Registry::instance()->CAP->current_user_can(
-            'ee_delete_payments',
-            'delete_payment_from_registration_details'
-        );
-
-        //get line table
-        EEH_Autoloader::register_line_item_display_autoloaders();
-        $Line_Item_Display                       = new EE_Line_Item_Display(
-            'admin_table',
-            'EE_Admin_Table_Line_Item_Display_Strategy'
-        );
-        $this->_template_args['line_item_table'] = $Line_Item_Display->display_line_item(
-            $this->_transaction->total_line_item()
-        );
-        $this->_template_args['REG_code']        = $this->_transaction->get_first_related('Registration')
-                                                                      ->get('REG_code');
-
-        // process taxes
-        $taxes                         = $this->_transaction->get_many_related(
-            'Line_Item',
-            array(array('LIN_type' => EEM_Line_Item::type_tax))
-        );
-        $this->_template_args['taxes'] = ! empty($taxes) ? $taxes : false;
-
-        $this->_template_args['grand_total']     = EEH_Template::format_currency(
-            $this->_transaction->get('TXN_total'),
-            false,
-            false
-        );
-        $this->_template_args['grand_raw_total'] = $this->_transaction->get('TXN_total');
-        $this->_template_args['TXN_status']      = $this->_transaction->get('STS_ID');
-
-        // process payment details
-        $payments = $this->_transaction->get_many_related('Payment');
-        if (! empty($payments)) {
-            $this->_template_args['payments']              = $payments;
-            $this->_template_args['existing_reg_payments'] = $this->_get_registration_payment_IDs($payments);
-        } else {
-            $this->_template_args['payments']              = false;
-            $this->_template_args['existing_reg_payments'] = array();
-        }
-
-        $this->_template_args['edit_payment_url']   = add_query_arg(array('action' => 'edit_payment'), TXN_ADMIN_URL);
-        $this->_template_args['delete_payment_url'] = add_query_arg(
-            array('action' => 'espresso_delete_payment'),
-            TXN_ADMIN_URL
-        );
-
-        if (isset($txn_details['invoice_number'])) {
-            $this->_template_args['txn_details']['invoice_number']['value'] = $this->_template_args['REG_code'];
-            $this->_template_args['txn_details']['invoice_number']['label'] = esc_html__(
-                'Invoice Number',
-                'event_espresso'
-            );
-        }
-
-        $this->_template_args['txn_details']['registration_session']['value'] = $this->_transaction
-            ->get_first_related('Registration')
-            ->get('REG_session');
-        $this->_template_args['txn_details']['registration_session']['label'] = esc_html__(
-            'Registration Session',
-            'event_espresso'
-        );
-
-        $this->_template_args['txn_details']['ip_address']['value'] = isset($this->_session['ip_address'])
-            ? $this->_session['ip_address']
-            : '';
-        $this->_template_args['txn_details']['ip_address']['label'] = esc_html__(
-            'Transaction placed from IP',
-            'event_espresso'
-        );
-
-        $this->_template_args['txn_details']['user_agent']['value'] = isset($this->_session['user_agent'])
-            ? $this->_session['user_agent']
-            : '';
-        $this->_template_args['txn_details']['user_agent']['label'] = esc_html__(
-            'Registrant User Agent',
-            'event_espresso'
-        );
-
-        $reg_steps = '<ul>';
-        foreach ($this->_transaction->reg_steps() as $reg_step => $reg_step_status) {
-            if ($reg_step_status === true) {
-                $reg_steps .= '<li style="color:#70cc50">'
-                              . sprintf(
-                                  esc_html__('%1$s : Completed', 'event_espresso'),
-                                  ucwords(str_replace('_', ' ', $reg_step))
-                              )
-                              . '</li>';
-            } elseif (is_numeric($reg_step_status) && $reg_step_status !== false) {
-                $reg_steps .= '<li style="color:#2EA2CC">'
-                              . sprintf(
-                                  esc_html__('%1$s : Initiated %2$s', 'event_espresso'),
-                                  ucwords(str_replace('_', ' ', $reg_step)),
-                                  date(
-                                      get_option('date_format') . ' ' . get_option('time_format'),
-                                      ($reg_step_status + (get_option('gmt_offset') * HOUR_IN_SECONDS))
-                                  )
-                              )
-                              . '</li>';
-            } else {
-                $reg_steps .= '<li style="color:#E76700">'
-                              . sprintf(
-                                  esc_html__('%1$s : Never Initiated', 'event_espresso'),
-                                  ucwords(str_replace('_', ' ', $reg_step))
-                              )
-                              . '</li>';
-            }
-        }
-        $reg_steps                                                 .= '</ul>';
-        $this->_template_args['txn_details']['reg_steps']['value'] = $reg_steps;
-        $this->_template_args['txn_details']['reg_steps']['label'] = esc_html__(
-            'Registration Step Progress',
-            'event_espresso'
-        );
-
-
-        $this->_get_registrations_to_apply_payment_to();
-        $this->_get_payment_methods($payments);
-        $this->_get_payment_status_array();
-        $this->_get_reg_status_selection(); //sets up the template args for the reg status array for the transaction.
-
-        $this->_template_args['transaction_form_url']    = add_query_arg(array(
-            'action'  => 'edit_transaction',
-            'process' => 'transaction',
-        ), TXN_ADMIN_URL);
-        $this->_template_args['apply_payment_form_url']  = add_query_arg(array(
-            'page'   => 'espresso_transactions',
-            'action' => 'espresso_apply_payment',
-        ), WP_AJAX_URL);
-        $this->_template_args['delete_payment_form_url'] = add_query_arg(array(
-            'page'   => 'espresso_transactions',
-            'action' => 'espresso_delete_payment',
-        ), WP_AJAX_URL);
-
-        $this->_template_args['action_buttons'] = $this->getActionButtons($this->_transaction);
-
-        // 'espresso_delete_payment_nonce'
-
-        $template_path = TXN_TEMPLATE_PATH . 'txn_admin_details_main_meta_box_txn_details.template.php';
-        echo EEH_Template::display_template($template_path, $this->_template_args, true);
-    }
-
-
-    /**
-     * _get_registration_payment_IDs
-     *    generates an array of Payment IDs and their corresponding Registration IDs
-     *
-     * @access protected
-     * @param EE_Payment[] $payments
-     * @return array
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     * @throws ReflectionException
-     */
-    protected function _get_registration_payment_IDs($payments = array())
-    {
-        $existing_reg_payments = array();
-        // get all reg payments for these payments
-        $reg_payments = EEM_Registration_Payment::instance()->get_all(array(
-            array(
-                'PAY_ID' => array(
-                    'IN',
-                    array_keys($payments),
-                ),
-            ),
-        ));
-        if (! empty($reg_payments)) {
-            foreach ($payments as $payment) {
-                if (! $payment instanceof EE_Payment) {
-                    continue;
-                } elseif (! isset($existing_reg_payments[$payment->ID()])) {
-                    $existing_reg_payments[$payment->ID()] = array();
-                }
-                foreach ($reg_payments as $reg_payment) {
-                    if ($reg_payment instanceof EE_Registration_Payment
-                        && $reg_payment->payment_ID() === $payment->ID()
-                    ) {
-                        $existing_reg_payments[$payment->ID()][] = $reg_payment->registration_ID();
-                    }
-                }
-            }
-        }
-
-        return $existing_reg_payments;
-    }
-
-
-    /**
-     * _get_registrations_to_apply_payment_to
-     *    generates HTML for displaying a series of checkboxes in the admin payment modal window
-     * which allows the admin to only apply the payment to the specific registrations
-     *
-     * @access protected
-     * @return void
-     * @throws \EE_Error
-     */
-    protected function _get_registrations_to_apply_payment_to()
-    {
-        // we want any registration with an active status (ie: not deleted or cancelled)
-        $query_params                      = array(
-            array(
-                'STS_ID' => array(
-                    'IN',
-                    array(
-                        EEM_Registration::status_id_approved,
-                        EEM_Registration::status_id_pending_payment,
-                        EEM_Registration::status_id_not_approved,
-                    ),
-                ),
-            ),
-        );
-        $registrations_to_apply_payment_to = EEH_HTML::br()
-                                             . EEH_HTML::div(
-                                                 '',
-                                                 'txn-admin-apply-payment-to-registrations-dv',
-                                                 '',
-                                                 'clear: both; margin: 1.5em 0 0; display: none;'
-                                             );
-        $registrations_to_apply_payment_to .= EEH_HTML::br() . EEH_HTML::div('', '', 'admin-primary-mbox-tbl-wrap');
-        $registrations_to_apply_payment_to .= EEH_HTML::table('', '', 'admin-primary-mbox-tbl');
-        $registrations_to_apply_payment_to .= EEH_HTML::thead(
-            EEH_HTML::tr(
-                EEH_HTML::th(esc_html__('ID', 'event_espresso')) .
-                EEH_HTML::th(esc_html__('Registrant', 'event_espresso')) .
-                EEH_HTML::th(esc_html__('Ticket', 'event_espresso')) .
-                EEH_HTML::th(esc_html__('Event', 'event_espresso')) .
-                EEH_HTML::th(esc_html__('Paid', 'event_espresso'), '', 'txn-admin-payment-paid-td jst-cntr') .
-                EEH_HTML::th(esc_html__('Owing', 'event_espresso'), '', 'txn-admin-payment-owing-td jst-cntr') .
-                EEH_HTML::th(esc_html__('Apply', 'event_espresso'), '', 'jst-cntr')
-            )
-        );
-        $registrations_to_apply_payment_to .= EEH_HTML::tbody();
-        // get registrations for TXN
-        $registrations = $this->_transaction->registrations($query_params);
-        $existing_reg_payments = $this->_template_args['existing_reg_payments'];
-        foreach ($registrations as $registration) {
-            if ($registration instanceof EE_Registration) {
-                $attendee_name                     = $registration->attendee() instanceof EE_Attendee
-                    ? $registration->attendee()->full_name()
-                    : esc_html__('Unknown Attendee', 'event_espresso');
-                $owing                             = $registration->final_price() - $registration->paid();
-                $taxable                           = $registration->ticket()->taxable()
-                    ? ' <span class="smaller-text lt-grey-text"> ' . esc_html__('+ tax', 'event_espresso') . '</span>'
-                    : '';
-                $checked = empty($existing_reg_payments) || in_array($registration->ID(), $existing_reg_payments)
-                    ? ' checked="checked"'
-                    : '';
-                $disabled                          = $registration->final_price() > 0 ? '' : ' disabled';
-                $registrations_to_apply_payment_to .= EEH_HTML::tr(
-                    EEH_HTML::td($registration->ID()) .
-                    EEH_HTML::td($attendee_name) .
-                    EEH_HTML::td(
-                        $registration->ticket()->name() . ' : ' . $registration->ticket()->pretty_price() . $taxable
-                    ) .
-                    EEH_HTML::td($registration->event_name()) .
-                    EEH_HTML::td($registration->pretty_paid(), '', 'txn-admin-payment-paid-td jst-cntr') .
-                    EEH_HTML::td(EEH_Template::format_currency($owing), '', 'txn-admin-payment-owing-td jst-cntr') .
-                    EEH_HTML::td(
-                        '<input type="checkbox" value="' . $registration->ID()
-                        . '" name="txn_admin_payment[registrations]"'
-                        . $checked . $disabled . '>',
-                        '',
-                        'jst-cntr'
-                    ),
-                    'apply-payment-registration-row-' . $registration->ID()
-                );
-            }
-        }
-        $registrations_to_apply_payment_to                         .= EEH_HTML::tbodyx();
-        $registrations_to_apply_payment_to                         .= EEH_HTML::tablex();
-        $registrations_to_apply_payment_to                         .= EEH_HTML::divx();
-        $registrations_to_apply_payment_to                         .= EEH_HTML::p(
-            esc_html__(
-                'The payment will only be applied to the registrations that have a check mark in their corresponding check box. Checkboxes for free registrations have been disabled.',
-                'event_espresso'
-            ),
-            '',
-            'clear description'
-        );
-        $registrations_to_apply_payment_to                         .= EEH_HTML::divx();
-        $this->_template_args['registrations_to_apply_payment_to'] = $registrations_to_apply_payment_to;
-    }
-
-
-    /**
-     * _get_reg_status_selection
-     *
-     * @todo   this will need to be adjusted either once MER comes along OR we move default reg status to tickets
-     *         instead of events.
-     * @access protected
-     * @return void
-     * @throws EE_Error
-     */
-    protected function _get_reg_status_selection()
-    {
-        //first get all possible statuses
-        $statuses = EEM_Registration::reg_status_array(array(), true);
-        //let's add a "don't change" option.
-        $status_array['NAN']                                 = esc_html__('Leave the Same', 'event_espresso');
-        $status_array                                        = array_merge($status_array, $statuses);
-        $this->_template_args['status_change_select']        = EEH_Form_Fields::select_input(
-            'txn_reg_status_change[reg_status]',
-            $status_array,
-            'NAN',
-            'id="txn-admin-payment-reg-status-inp"',
-            'txn-reg-status-change-reg-status'
-        );
-        $this->_template_args['delete_status_change_select'] = EEH_Form_Fields::select_input(
-            'delete_txn_reg_status_change[reg_status]',
-            $status_array,
-            'NAN',
-            'delete-txn-admin-payment-reg-status-inp',
-            'delete-txn-reg-status-change-reg-status'
-        );
-    }
-
-
-    /**
-     *    _get_payment_methods
-     * Gets all the payment methods available generally, or the ones that are already
-     * selected on these payments (in case their payment methods are no longer active).
-     * Has the side-effect of updating the template args' payment_methods item
-     *
-     * @access private
-     * @param EE_Payment[] to show on this page
-     * @return void
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     * @throws ReflectionException
-     */
-    private function _get_payment_methods($payments = array())
-    {
-        $payment_methods_of_payments = array();
-        foreach ($payments as $payment) {
-            if ($payment instanceof EE_Payment) {
-                $payment_methods_of_payments[] = $payment->get('PMD_ID');
-            }
-        }
-        if ($payment_methods_of_payments) {
-            $query_args = array(
-                array(
-                    'OR*payment_method_for_payment' => array(
-                        'PMD_ID'    => array('IN', $payment_methods_of_payments),
-                        'PMD_scope' => array('LIKE', '%' . EEM_Payment_Method::scope_admin . '%'),
-                    ),
-                ),
-            );
-        } else {
-            $query_args = array(array('PMD_scope' => array('LIKE', '%' . EEM_Payment_Method::scope_admin . '%')));
-        }
-        $this->_template_args['payment_methods'] = EEM_Payment_Method::instance()->get_all($query_args);
-    }
-
-
-    /**
-     * txn_attendees_meta_box
-     *    generates HTML for the Attendees Transaction main meta box
-     *
-     * @access public
-     * @param WP_Post $post
-     * @param array   $metabox
-     * @return void
-     * @throws DomainException
-     * @throws EE_Error
-     */
-    public function txn_attendees_meta_box($post, $metabox = array('args' => array()))
-    {
-
-        /** @noinspection NonSecureExtractUsageInspection */
-        extract($metabox['args']);
-        $this->_template_args['post']            = $post;
-        $this->_template_args['event_attendees'] = array();
-        // process items in cart
-        $line_items = $this->_transaction->get_many_related(
-            'Line_Item',
-            array(array('LIN_type' => 'line-item'))
-        );
-        if (! empty($line_items)) {
-            foreach ($line_items as $item) {
-                if ($item instanceof EE_Line_Item) {
-                    switch ($item->OBJ_type()) {
-                        case 'Event':
-                            break;
-                        case 'Ticket':
-                            $ticket = $item->ticket();
-                            //right now we're only handling tickets here.
-                            //Cause its expected that only tickets will have attendees right?
-                            if (! $ticket instanceof EE_Ticket) {
-                                continue;
-                            }
-                            try {
-                                $event_name = $ticket->get_event_name();
-                            } catch (Exception $e) {
-                                EE_Error::add_error($e->getMessage(), __FILE__, __FUNCTION__, __LINE__);
-                                $event_name = esc_html__('Unknown Event', 'event_espresso');
-                            }
-                            $event_name   .= ' - ' . $item->get('LIN_name');
-                            $ticket_price = EEH_Template::format_currency($item->get('LIN_unit_price'));
-                            // now get all of the registrations for this transaction that use this ticket
-                            $registrations = $ticket->get_many_related(
-                                'Registration',
-                                array(array('TXN_ID' => $this->_transaction->ID()))
-                            );
-                            foreach ($registrations as $registration) {
-                                if (! $registration instanceof EE_Registration) {
-                                    continue;
-                                }
-                                $this->_template_args['event_attendees'][$registration->ID()]['STS_ID']
-                                    = $registration->status_ID();
-                                $this->_template_args['event_attendees'][$registration->ID()]['att_num']
-                                    = $registration->count();
-                                $this->_template_args['event_attendees'][$registration->ID()]['event_ticket_name']
-                                    = $event_name;
-                                $this->_template_args['event_attendees'][$registration->ID()]['ticket_price']
-                                    = $ticket_price;
-                                // attendee info
-                                $attendee = $registration->get_first_related('Attendee');
-                                if ($attendee instanceof EE_Attendee) {
-                                    $this->_template_args['event_attendees'][$registration->ID()]['att_id']
-                                        = $attendee->ID();
-                                    $this->_template_args['event_attendees'][$registration->ID()]['attendee']
-                                        = $attendee->full_name();
-                                    $this->_template_args['event_attendees'][$registration->ID()]['email']
-                                        = '<a href="mailto:' . $attendee->email() . '?subject=' . $event_name
-                                          . esc_html__(
-                                              ' Event',
-                                              'event_espresso'
-                                          )
-                                          . '">' . $attendee->email() . '</a>';
-                                    $this->_template_args['event_attendees'][$registration->ID()]['address']
-                                        = EEH_Address::format($attendee, 'inline', false, false);
-                                } else {
-                                    $this->_template_args['event_attendees'][$registration->ID()]['att_id']   = '';
-                                    $this->_template_args['event_attendees'][$registration->ID()]['attendee'] = '';
-                                    $this->_template_args['event_attendees'][$registration->ID()]['email']    = '';
-                                    $this->_template_args['event_attendees'][$registration->ID()]['address']  = '';
-                                }
-                            }
-                            break;
-
-                    }
-                }
-            }
-
-            $this->_template_args['transaction_form_url'] = add_query_arg(
-                array(
-                    'action'  => 'edit_transaction',
-                    'process' => 'attendees',
-                ),
-                TXN_ADMIN_URL
-            );
-            echo EEH_Template::display_template(
-                TXN_TEMPLATE_PATH . 'txn_admin_details_main_meta_box_attendees.template.php',
-                $this->_template_args,
-                true
-            );
-
-        } else {
-            echo sprintf(
-                esc_html__(
-                    '%1$sFor some reason, there are no attendees registered for this transaction. Likely the registration was abandoned in process.%2$s',
-                    'event_espresso'
-                ),
-                '<p class="important-notice">',
-                '</p>'
-            );
-        }
-    }
-
-
-    /**
-     * txn_registrant_side_meta_box
-     * generates HTML for the Edit Transaction side meta box
-     *
-     * @access public
-     * @return void
-     * @throws DomainException
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     * @throws ReflectionException
-     */
-    public function txn_registrant_side_meta_box()
-    {
-        $primary_att = $this->_transaction->primary_registration() instanceof EE_Registration
-            ? $this->_transaction->primary_registration()->get_first_related('Attendee')
-            : null;
-        if (! $primary_att instanceof EE_Attendee) {
-            $this->_template_args['no_attendee_message'] = esc_html__(
-                'There is no attached contact for this transaction.  The transaction either failed due to an error or was abandoned.',
-                'event_espresso'
-            );
-            $primary_att                                 = EEM_Attendee::instance()->create_default_object();
-        }
-        $this->_template_args['ATT_ID']            = $primary_att->ID();
-        $this->_template_args['prime_reg_fname']   = $primary_att->fname();
-        $this->_template_args['prime_reg_lname']   = $primary_att->lname();
-        $this->_template_args['prime_reg_email']   = $primary_att->email();
-        $this->_template_args['prime_reg_phone']   = $primary_att->phone();
-        $this->_template_args['edit_attendee_url'] = EE_Admin_Page::add_query_args_and_nonce(array(
-            'action' => 'edit_attendee',
-            'post'   => $primary_att->ID(),
-        ), REG_ADMIN_URL);
-        // get formatted address for registrant
-        $this->_template_args['formatted_address'] = EEH_Address::format($primary_att);
-        echo EEH_Template::display_template(
-            TXN_TEMPLATE_PATH . 'txn_admin_details_side_meta_box_registrant.template.php',
-            $this->_template_args,
-            true
-        );
-    }
-
-
-    /**
-     * txn_billing_info_side_meta_box
-     *    generates HTML for the Edit Transaction side meta box
-     *
-     * @access public
-     * @return void
-     * @throws DomainException
-     * @throws EE_Error
-     */
-    public function txn_billing_info_side_meta_box()
-    {
-
-        $this->_template_args['billing_form']     = $this->_transaction->billing_info();
-        $this->_template_args['billing_form_url'] = add_query_arg(
-            array('action' => 'edit_transaction', 'process' => 'billing'),
-            TXN_ADMIN_URL
-        );
-
-        $template_path = TXN_TEMPLATE_PATH . 'txn_admin_details_side_meta_box_billing_info.template.php';
-        echo EEH_Template::display_template($template_path, $this->_template_args, true);/**/
-    }
-
-
-    /**
-     * apply_payments_or_refunds
-     *    registers a payment or refund made towards a transaction
-     *
-     * @access public
-     * @return void
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws ReflectionException
-     * @throws RuntimeException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     */
-    public function apply_payments_or_refunds()
-    {
-        $json_response_data = array('return_data' => false);
-        $valid_data         = $this->_validate_payment_request_data();
-        $has_access = EE_Registry::instance()->CAP->current_user_can(
-            'ee_edit_payments',
-            'apply_payment_or_refund_from_registration_details'
-        );
-        if (! empty($valid_data) && $has_access) {
-            $PAY_ID = $valid_data['PAY_ID'];
-            //save  the new payment
-            $payment = $this->_create_payment_from_request_data($valid_data);
-            // get the TXN for this payment
-            $transaction = $payment->transaction();
-            // verify transaction
-            if ($transaction instanceof EE_Transaction) {
-                // calculate_total_payments_and_update_status
-                $this->_process_transaction_payments($transaction);
-                $REG_IDs = $this->_get_REG_IDs_to_apply_payment_to($payment);
-                $this->_remove_existing_registration_payments($payment, $PAY_ID);
-                // apply payment to registrations (if applicable)
-                if (! empty($REG_IDs)) {
-                    $this->_update_registration_payments($transaction, $payment, $REG_IDs);
-                    $this->_maybe_send_notifications();
-                    // now process status changes for the same registrations
-                    $this->_process_registration_status_change($transaction, $REG_IDs);
-                }
-                $this->_maybe_send_notifications($payment);
-                //prepare to render page
-                $json_response_data['return_data'] = $this->_build_payment_json_response($payment, $REG_IDs);
-                do_action(
-                    'AHEE__Transactions_Admin_Page__apply_payments_or_refund__after_recording',
-                    $transaction,
-                    $payment
-                );
-            } else {
-                EE_Error::add_error(
-                    esc_html__(
-                        'A valid Transaction for this payment could not be retrieved.',
-                        'event_espresso'
-                    ),
-                    __FILE__,
-                    __FUNCTION__,
-                    __LINE__
-                );
-            }
-        } else {
-            if ($has_access) {
-                EE_Error::add_error(
-                    esc_html__(
-                        'The payment form data could not be processed. Please try again.',
-                        'event_espresso'
-                    ),
-                    __FILE__,
-                    __FUNCTION__,
-                    __LINE__
-                );
-            } else {
-                EE_Error::add_error(
-                    esc_html__(
-                        'You do not have access to apply payments or refunds to a registration.',
-                        'event_espresso'
-                    ),
-                    __FILE__,
-                    __FUNCTION__,
-                    __LINE__
-                );
-            }
-        }
-        $notices              = EE_Error::get_notices(
-            false,
-            false,
-            false
-        );
-        $this->_template_args = array(
-            'data'    => $json_response_data,
-            'error'   => $notices['errors'],
-            'success' => $notices['success'],
-        );
-        $this->_return_json();
-    }
-
-
-    /**
-     * _validate_payment_request_data
-     *
-     * @return array
-     * @throws EE_Error
-     */
-    protected function _validate_payment_request_data()
-    {
-        if (! isset($this->_req_data['txn_admin_payment'])) {
-            return false;
-        }
-        $payment_form = $this->_generate_payment_form_section();
-        try {
-            if ($payment_form->was_submitted()) {
-                $payment_form->receive_form_submission();
-                if (! $payment_form->is_valid()) {
-                    $submission_error_messages = array();
-                    foreach ($payment_form->get_validation_errors_accumulated() as $validation_error) {
-                        if ($validation_error instanceof EE_Validation_Error) {
-                            $submission_error_messages[] = sprintf(
-                                _x('%s : %s', 'Form Section Name : Form Validation Error', 'event_espresso'),
-                                $validation_error->get_form_section()->html_label_text(),
-                                $validation_error->getMessage()
-                            );
-                        }
-                    }
-                    EE_Error::add_error(
-                        implode('<br />', $submission_error_messages),
-                        __FILE__,
-                        __FUNCTION__,
-                        __LINE__
-                    );
-
-                    return array();
-                }
-            }
-        } catch (EE_Error $e) {
-            EE_Error::add_error($e->getMessage(), __FILE__, __FUNCTION__, __LINE__);
-
-            return array();
-        }
-
-        return $payment_form->valid_data();
-    }
-
-
-    /**
-     * _generate_payment_form_section
-     *
-     * @return EE_Form_Section_Proper
-     * @throws EE_Error
-     */
-    protected function _generate_payment_form_section()
-    {
-        return new EE_Form_Section_Proper(
-            array(
-                'name'        => 'txn_admin_payment',
-                'subsections' => array(
-                    'PAY_ID'          => new EE_Text_Input(
-                        array(
-                            'default'               => 0,
-                            'required'              => false,
-                            'html_label_text'       => esc_html__('Payment ID', 'event_espresso'),
-                            'validation_strategies' => array(new EE_Int_Normalization()),
-                        )
-                    ),
-                    'TXN_ID'          => new EE_Text_Input(
-                        array(
-                            'default'               => 0,
-                            'required'              => true,
-                            'html_label_text'       => esc_html__('Transaction ID', 'event_espresso'),
-                            'validation_strategies' => array(new EE_Int_Normalization()),
-                        )
-                    ),
-                    'type'            => new EE_Text_Input(
-                        array(
-                            'default'               => 1,
-                            'required'              => true,
-                            'html_label_text'       => esc_html__('Payment or Refund', 'event_espresso'),
-                            'validation_strategies' => array(new EE_Int_Normalization()),
-                        )
-                    ),
-                    'amount'          => new EE_Text_Input(
-                        array(
-                            'default'               => 0,
-                            'required'              => true,
-                            'html_label_text'       => esc_html__('Payment amount', 'event_espresso'),
-                            'validation_strategies' => array(new EE_Float_Normalization()),
-                        )
-                    ),
-                    'status'          => new EE_Text_Input(
-                        array(
-                            'default'         => EEM_Payment::status_id_approved,
-                            'required'        => true,
-                            'html_label_text' => esc_html__('Payment status', 'event_espresso'),
-                        )
-                    ),
-                    'PMD_ID'          => new EE_Text_Input(
-                        array(
-                            'default'               => 2,
-                            'required'              => true,
-                            'html_label_text'       => esc_html__('Payment Method', 'event_espresso'),
-                            'validation_strategies' => array(new EE_Int_Normalization()),
-                        )
-                    ),
-                    'date'            => new EE_Text_Input(
-                        array(
-                            'default'         => time(),
-                            'required'        => true,
-                            'html_label_text' => esc_html__('Payment date', 'event_espresso'),
-                        )
-                    ),
-                    'txn_id_chq_nmbr' => new EE_Text_Input(
-                        array(
-                            'default'               => '',
-                            'required'              => false,
-                            'html_label_text'       => esc_html__('Transaction or Cheque Number', 'event_espresso'),
-                            'validation_strategies' => array(
-                                new EE_Max_Length_Validation_Strategy(
-                                    esc_html__('Input too long', 'event_espresso'),
-                                    100
-                                ),
-                            ),
-                        )
-                    ),
-                    'po_number'       => new EE_Text_Input(
-                        array(
-                            'default'               => '',
-                            'required'              => false,
-                            'html_label_text'       => esc_html__('Purchase Order Number', 'event_espresso'),
-                            'validation_strategies' => array(
-                                new EE_Max_Length_Validation_Strategy(
-                                    esc_html__('Input too long', 'event_espresso'),
-                                    100
-                                ),
-                            ),
-                        )
-                    ),
-                    'accounting'      => new EE_Text_Input(
-                        array(
-                            'default'               => '',
-                            'required'              => false,
-                            'html_label_text'       => esc_html__('Extra Field for Accounting', 'event_espresso'),
-                            'validation_strategies' => array(
-                                new EE_Max_Length_Validation_Strategy(
-                                    esc_html__('Input too long', 'event_espresso'),
-                                    100
-                                ),
-                            ),
-                        )
-                    ),
-                ),
-            )
-        );
-    }
-
-
-    /**
-     * _create_payment_from_request_data
-     *
-     * @param array $valid_data
-     * @return EE_Payment
-     * @throws EE_Error
-     */
-    protected function _create_payment_from_request_data($valid_data)
-    {
-        $PAY_ID = $valid_data['PAY_ID'];
-        // get payment amount
-        $amount = $valid_data['amount'] ? abs($valid_data['amount']) : 0;
-        // payments have a type value of 1 and refunds have a type value of -1
-        // so multiplying amount by type will give a positive value for payments, and negative values for refunds
-        $amount = $valid_data['type'] < 0 ? $amount * -1 : $amount;
-        // for some reason the date string coming in has extra spaces between the date and time.  This fixes that.
-        $date    = $valid_data['date']
-            ? preg_replace('/\s+/', ' ', $valid_data['date'])
-            : date('Y-m-d g:i a', current_time('timestamp'));
-        $payment = EE_Payment::new_instance(
-            array(
-                'TXN_ID'              => $valid_data['TXN_ID'],
-                'STS_ID'              => $valid_data['status'],
-                'PAY_timestamp'       => $date,
-                'PAY_source'          => EEM_Payment_Method::scope_admin,
-                'PMD_ID'              => $valid_data['PMD_ID'],
-                'PAY_amount'          => $amount,
-                'PAY_txn_id_chq_nmbr' => $valid_data['txn_id_chq_nmbr'],
-                'PAY_po_number'       => $valid_data['po_number'],
-                'PAY_extra_accntng'   => $valid_data['accounting'],
-                'PAY_details'         => $valid_data,
-                'PAY_ID'              => $PAY_ID,
-            ),
-            '',
-            array('Y-m-d', 'g:i a')
-        );
-
-        if (! $payment->save()) {
-            EE_Error::add_error(
-                sprintf(
-                    esc_html__('Payment %1$d has not been successfully saved to the database.', 'event_espresso'),
-                    $payment->ID()
-                ),
-                __FILE__, __FUNCTION__, __LINE__
-            );
-        }
-
-        return $payment;
-    }
-
-
-    /**
-     * _process_transaction_payments
-     *
-     * @param \EE_Transaction $transaction
-     * @return void
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws ReflectionException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     */
-    protected function _process_transaction_payments(EE_Transaction $transaction)
-    {
-        /** @type EE_Transaction_Payments $transaction_payments */
-        $transaction_payments = EE_Registry::instance()->load_class('Transaction_Payments');
-        //update the transaction with this payment
-        if ($transaction_payments->calculate_total_payments_and_update_status($transaction)) {
-            EE_Error::add_success(esc_html__(
-                'The payment has been processed successfully.', 'event_espresso'),
-                __FILE__,
-                __FUNCTION__,
-                __LINE__
-            );
-        } else {
-            EE_Error::add_error(
-                esc_html__(
-                    'The payment was processed successfully but the amount paid for the transaction was not updated.',
-                    'event_espresso'
-                )
-                ,
-                __FILE__,
-                __FUNCTION__,
-                __LINE__
-            );
-        }
-    }
-
-
-    /**
-     * _get_REG_IDs_to_apply_payment_to
-     * returns a list of registration IDs that the payment will apply to
-     *
-     * @param \EE_Payment $payment
-     * @return array
-     * @throws EE_Error
-     */
-    protected function _get_REG_IDs_to_apply_payment_to(EE_Payment $payment)
-    {
-        $REG_IDs = array();
-        // grab array of IDs for specific registrations to apply changes to
-        if (isset($this->_req_data['txn_admin_payment']['registrations'])) {
-            $REG_IDs = (array)$this->_req_data['txn_admin_payment']['registrations'];
-        }
-        //nothing specified ? then get all reg IDs
-        if (empty($REG_IDs)) {
-            $registrations = $payment->transaction()->registrations();
-            $REG_IDs       = ! empty($registrations)
-                ? array_keys($registrations)
-                : $this->_get_existing_reg_payment_REG_IDs($payment);
-        }
-
-        // ensure that REG_IDs are integers and NOT strings
-        return array_map('intval', $REG_IDs);
-    }
-
-
-    /**
-     * @return array
-     */
-    public function existing_reg_payment_REG_IDs()
-    {
-        return $this->_existing_reg_payment_REG_IDs;
-    }
-
-
-    /**
-     * @param array $existing_reg_payment_REG_IDs
-     */
-    public function set_existing_reg_payment_REG_IDs($existing_reg_payment_REG_IDs = null)
-    {
-        $this->_existing_reg_payment_REG_IDs = $existing_reg_payment_REG_IDs;
-    }
-
-
-    /**
-     * _get_existing_reg_payment_REG_IDs
-     * returns a list of registration IDs that the payment is currently related to
-     * as recorded in the database
-     *
-     * @param \EE_Payment $payment
-     * @return array
-     * @throws EE_Error
-     */
-    protected function _get_existing_reg_payment_REG_IDs(EE_Payment $payment)
-    {
-        if ($this->existing_reg_payment_REG_IDs() === null) {
-            // let's get any existing reg payment records for this payment
-            $existing_reg_payment_REG_IDs = $payment->get_many_related('Registration');
-            // but we only want the REG IDs, so grab the array keys
-            $existing_reg_payment_REG_IDs = ! empty($existing_reg_payment_REG_IDs)
-                ? array_keys($existing_reg_payment_REG_IDs)
-                : array();
-            $this->set_existing_reg_payment_REG_IDs($existing_reg_payment_REG_IDs);
-        }
-
-        return $this->existing_reg_payment_REG_IDs();
-    }
-
-
-    /**
-     * _remove_existing_registration_payments
-     * this calculates the difference between existing relations
-     * to the supplied payment and the new list registration IDs,
-     * removes any related registrations that no longer apply,
-     * and then updates the registration paid fields
-     *
-     * @param \EE_Payment $payment
-     * @param int         $PAY_ID
-     * @return bool;
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws ReflectionException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     */
-    protected function _remove_existing_registration_payments(EE_Payment $payment, $PAY_ID = 0)
-    {
-        // newly created payments will have nothing recorded for $PAY_ID
-        if ($PAY_ID == 0) {
-            return false;
-        }
-        $existing_reg_payment_REG_IDs = $this->_get_existing_reg_payment_REG_IDs($payment);
-        if (empty($existing_reg_payment_REG_IDs)) {
-            return false;
-        }
-        /** @type EE_Transaction_Payments $transaction_payments */
-        $transaction_payments = EE_Registry::instance()->load_class('Transaction_Payments');
-
-        return $transaction_payments->delete_registration_payments_and_update_registrations(
-            $payment,
-            array(
-                array(
-                    'PAY_ID' => $payment->ID(),
-                    'REG_ID' => array('IN', $existing_reg_payment_REG_IDs),
-                ),
-            )
-        );
-    }
-
-
-    /**
-     * _update_registration_payments
-     * this applies the payments to the selected registrations
-     * but only if they have not already been paid for
-     *
-     * @param  EE_Transaction $transaction
-     * @param \EE_Payment     $payment
-     * @param array           $REG_IDs
-     * @return void
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws ReflectionException
-     * @throws RuntimeException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     */
-    protected function _update_registration_payments(
-        EE_Transaction $transaction,
-        EE_Payment $payment,
-        $REG_IDs = array()
-    ) {
-        // we can pass our own custom set of registrations to EE_Payment_Processor::process_registration_payments()
-        // so let's do that using our set of REG_IDs from the form
-        $registration_query_where_params = array(
-            'REG_ID' => array('IN', $REG_IDs),
-        );
-        // but add in some conditions regarding payment,
-        // so that we don't apply payments to registrations that are free or have already been paid for
-        // but ONLY if the payment is NOT a refund ( ie: the payment amount is not negative )
-        if (! $payment->is_a_refund()) {
-            $registration_query_where_params['REG_final_price']  = array('!=', 0);
-            $registration_query_where_params['REG_final_price*'] = array('!=', 'REG_paid', true);
-        }
-        $registrations = $transaction->registrations(array($registration_query_where_params));
-        if (! empty($registrations)) {
-            /** @type EE_Payment_Processor $payment_processor */
-            $payment_processor = EE_Registry::instance()->load_core('Payment_Processor');
-            $payment_processor->process_registration_payments($transaction, $payment, $registrations);
-        }
-    }
-
-
-    /**
-     * _process_registration_status_change
-     * This processes requested registration status changes for all the registrations
-     * on a given transaction and (optionally) sends out notifications for the changes.
-     *
-     * @param  EE_Transaction $transaction
-     * @param array           $REG_IDs
-     * @return bool
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws ReflectionException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     */
-    protected function _process_registration_status_change(EE_Transaction $transaction, $REG_IDs = array())
-    {
-        // first if there is no change in status then we get out.
-        if (
-            ! isset($this->_req_data['txn_reg_status_change']['reg_status'])
-            || $this->_req_data['txn_reg_status_change']['reg_status'] === 'NAN'
-        ) {
-            //no error message, no change requested, just nothing to do man.
-            return false;
-        }
-        /** @type EE_Transaction_Processor $transaction_processor */
-        $transaction_processor = EE_Registry::instance()->load_class('Transaction_Processor');
-
-        // made it here dude?  Oh WOW.  K, let's take care of changing the statuses
-        return $transaction_processor->manually_update_registration_statuses(
-            $transaction,
-            sanitize_text_field($this->_req_data['txn_reg_status_change']['reg_status']),
-            array(array('REG_ID' => array('IN', $REG_IDs)))
-        );
-    }
-
-
-    /**
-     * _build_payment_json_response
-     *
-     * @access public
-     * @param \EE_Payment $payment
-     * @param array       $REG_IDs
-     * @param bool | null $delete_txn_reg_status_change
-     * @return array
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     * @throws ReflectionException
-     */
-    protected function _build_payment_json_response(
-        EE_Payment $payment,
-        $REG_IDs = array(),
-        $delete_txn_reg_status_change = null
-    ) {
-        // was the payment deleted ?
-        if (is_bool($delete_txn_reg_status_change)) {
-            return array(
-                'PAY_ID'                       => $payment->ID(),
-                'amount'                       => $payment->amount(),
-                'total_paid'                   => $payment->transaction()->paid(),
-                'txn_status'                   => $payment->transaction()->status_ID(),
-                'pay_status'                   => $payment->STS_ID(),
-                'registrations'                => $this->_registration_payment_data_array($REG_IDs),
-                'delete_txn_reg_status_change' => $delete_txn_reg_status_change,
-            );
-        } else {
-            $this->_get_payment_status_array();
-
-            return array(
-                'amount'           => $payment->amount(),
-                'total_paid'       => $payment->transaction()->paid(),
-                'txn_status'       => $payment->transaction()->status_ID(),
-                'pay_status'       => $payment->STS_ID(),
-                'PAY_ID'           => $payment->ID(),
-                'STS_ID'           => $payment->STS_ID(),
-                'status'           => self::$_pay_status[$payment->STS_ID()],
-                'date'             => $payment->timestamp('Y-m-d', 'h:i a'),
-                'method'           => strtoupper($payment->source()),
-                'PM_ID'            => $payment->payment_method() ? $payment->payment_method()->ID() : 1,
-                'gateway'          => $payment->payment_method()
-                    ? $payment->payment_method()->admin_name()
-                    : esc_html__("Unknown", 'event_espresso'),
-                'gateway_response' => $payment->gateway_response(),
-                'txn_id_chq_nmbr'  => $payment->txn_id_chq_nmbr(),
-                'po_number'        => $payment->po_number(),
-                'extra_accntng'    => $payment->extra_accntng(),
-                'registrations'    => $this->_registration_payment_data_array($REG_IDs),
-            );
-        }
-    }
-
-
-    /**
-     * delete_payment
-     *    delete a payment or refund made towards a transaction
-     *
-     * @access public
-     * @return void
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws ReflectionException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     */
-    public function delete_payment()
-    {
-        $json_response_data = array('return_data' => false);
-        $PAY_ID             = isset($this->_req_data['delete_txn_admin_payment']['PAY_ID'])
-            ? absint($this->_req_data['delete_txn_admin_payment']['PAY_ID'])
-            : 0;
-        $can_delete = EE_Registry::instance()->CAP->current_user_can(
-            'ee_delete_payments',
-            'delete_payment_from_registration_details'
-        );
-        if ($PAY_ID && $can_delete) {
-            $delete_txn_reg_status_change = isset($this->_req_data['delete_txn_reg_status_change'])
-                ? $this->_req_data['delete_txn_reg_status_change']
-                : false;
-            $payment                      = EEM_Payment::instance()->get_one_by_ID($PAY_ID);
-            if ($payment instanceof EE_Payment) {
-                $REG_IDs = $this->_get_existing_reg_payment_REG_IDs($payment);
-                /** @type EE_Transaction_Payments $transaction_payments */
-                $transaction_payments = EE_Registry::instance()->load_class('Transaction_Payments');
-                if ($transaction_payments->delete_payment_and_update_transaction($payment)) {
-                    $json_response_data['return_data'] = $this->_build_payment_json_response(
-                        $payment,
-                        $REG_IDs,
-                        $delete_txn_reg_status_change
-                    );
-                    if ($delete_txn_reg_status_change) {
-                        $this->_req_data['txn_reg_status_change'] = $delete_txn_reg_status_change;
-                        //MAKE sure we also add the delete_txn_req_status_change to the
-                        //$_REQUEST global because that's how messages will be looking for it.
-                        $_REQUEST['txn_reg_status_change'] = $delete_txn_reg_status_change;
-                        $this->_maybe_send_notifications();
-                        $this->_process_registration_status_change($payment->transaction(), $REG_IDs);
-                    }
-                }
-            } else {
-                EE_Error::add_error(
-                    esc_html__('Valid Payment data could not be retrieved from the database.', 'event_espresso'),
-                    __FILE__, __FUNCTION__, __LINE__
-                );
-            }
-        } else {
-            if ($can_delete) {
-                EE_Error::add_error(
-                    esc_html__(
-                        'A valid Payment ID was not received, therefore payment form data could not be loaded.',
-                        'event_espresso'
-                    ),
-                    __FILE__, __FUNCTION__, __LINE__
-                );
-            } else {
-                EE_Error::add_error(
-                    esc_html__(
-                        'You do not have access to delete a payment.',
-                        'event_espresso'
-                    ),
-                    __FILE__,
-                    __FUNCTION__,
-                    __LINE__
-                );
-            }
-        }
-        $notices              = EE_Error::get_notices(false, false, false);
-        $this->_template_args = array(
-            'data'      => $json_response_data,
-            'success'   => $notices['success'],
-            'error'     => $notices['errors'],
-            'attention' => $notices['attention'],
-        );
-        $this->_return_json();
-    }
-
-
-    /**
-     * _registration_payment_data_array
-     * adds info for 'owing' and 'paid' for each registration to the json response
-     *
-     * @access protected
-     * @param array $REG_IDs
-     * @return array
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     * @throws ReflectionException
-     */
-    protected function _registration_payment_data_array($REG_IDs)
-    {
-        $registration_payment_data = array();
-        //if non empty reg_ids lets get an array of registrations and update the values for the apply_payment/refund rows.
-        if (! empty($REG_IDs)) {
-            $registrations = EEM_Registration::instance()->get_all(array(array('REG_ID' => array('IN', $REG_IDs))));
-            foreach ($registrations as $registration) {
-                if ($registration instanceof EE_Registration) {
-                    $registration_payment_data[$registration->ID()] = array(
-                        'paid'  => $registration->pretty_paid(),
-                        'owing' => EEH_Template::format_currency($registration->final_price() - $registration->paid()),
-                    );
-                }
-            }
-        }
-
-        return $registration_payment_data;
-    }
-
-
-    /**
-     * _maybe_send_notifications
-     * determines whether or not the admin has indicated that notifications should be sent.
-     * If so, will toggle a filter switch for delivering registration notices.
-     * If passed an EE_Payment object, then it will trigger payment notifications instead.
-     *
-     * @access protected
-     * @param \EE_Payment | null $payment
-     */
-    protected function _maybe_send_notifications($payment = null)
-    {
-        switch ($payment instanceof EE_Payment) {
-            // payment notifications
-            case true :
-                if (
-                    isset(
-                        $this->_req_data['txn_payments'],
-                        $this->_req_data['txn_payments']['send_notifications']
-                    ) &&
-                    filter_var($this->_req_data['txn_payments']['send_notifications'], FILTER_VALIDATE_BOOLEAN)
-                ) {
-                    $this->_process_payment_notification($payment);
-                }
-                break;
-            // registration notifications
-            case false :
-                if (
-                    isset(
-                        $this->_req_data['txn_reg_status_change'],
-                        $this->_req_data['txn_reg_status_change']['send_notifications']
-                    ) &&
-                    filter_var($this->_req_data['txn_reg_status_change']['send_notifications'], FILTER_VALIDATE_BOOLEAN)
-                ) {
-                    add_filter('FHEE__EED_Messages___maybe_registration__deliver_notifications', '__return_true');
-                }
-                break;
-        }
-    }
-
-
-    /**
-     * _send_payment_reminder
-     *    generates HTML for the View Transaction Details Admin page
-     *
-     * @access protected
-     * @return void
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     */
-    protected function _send_payment_reminder()
-    {
-        $TXN_ID      = ! empty($this->_req_data['TXN_ID']) ? absint($this->_req_data['TXN_ID']) : false;
-        $transaction = EEM_Transaction::instance()->get_one_by_ID($TXN_ID);
-        $query_args  = isset($this->_req_data['redirect_to']) ? array(
-            'action' => $this->_req_data['redirect_to'],
-            'TXN_ID' => $this->_req_data['TXN_ID'],
-        ) : array();
-        do_action(
-            'AHEE__Transactions_Admin_Page___send_payment_reminder__process_admin_payment_reminder',
-            $transaction
-        );
-        $this->_redirect_after_action(
-            false,
-            esc_html__('payment reminder', 'event_espresso'),
-            esc_html__('sent', 'event_espresso'),
-            $query_args,
-            true
-        );
-    }
-
-
-    /**
-     *  get_transactions
-     *    get transactions for given parameters (used by list table)
-     *
-     * @param  int     $perpage how many transactions displayed per page
-     * @param  boolean $count   return the count or objects
-     * @param string   $view
-     * @return mixed int = count || array of transaction objects
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     */
-    public function get_transactions($perpage, $count = false, $view = '')
-    {
-
-        $TXN = EEM_Transaction::instance();
-
-        $start_date = isset($this->_req_data['txn-filter-start-date'])
-            ? wp_strip_all_tags($this->_req_data['txn-filter-start-date'])
-            : date(
-                'm/d/Y',
-                strtotime('-10 year')
-            );
-        $end_date   = isset($this->_req_data['txn-filter-end-date'])
-            ? wp_strip_all_tags($this->_req_data['txn-filter-end-date'])
-            : date('m/d/Y');
-
-        //make sure our timestamps start and end right at the boundaries for each day
-        $start_date = date('Y-m-d', strtotime($start_date)) . ' 00:00:00';
-        $end_date   = date('Y-m-d', strtotime($end_date)) . ' 23:59:59';
-
-
-        //convert to timestamps
-        $start_date = strtotime($start_date);
-        $end_date   = strtotime($end_date);
-
-        //makes sure start date is the lowest value and vice versa
-        $start_date = min($start_date, $end_date);
-        $end_date   = max($start_date, $end_date);
-
-        //convert to correct format for query
-        $start_date = EEM_Transaction::instance()->convert_datetime_for_query(
-            'TXN_timestamp',
-            date('Y-m-d H:i:s', $start_date),
-            'Y-m-d H:i:s'
-        );
-        $end_date   = EEM_Transaction::instance()->convert_datetime_for_query(
-            'TXN_timestamp',
-            date('Y-m-d H:i:s', $end_date),
-            'Y-m-d H:i:s'
-        );
-
-
-        //set orderby
-        $this->_req_data['orderby'] = ! empty($this->_req_data['orderby']) ? $this->_req_data['orderby'] : '';
-
-        switch ($this->_req_data['orderby']) {
-            case 'TXN_ID':
-                $orderby = 'TXN_ID';
-                break;
-            case 'ATT_fname':
-                $orderby = 'Registration.Attendee.ATT_fname';
-                break;
-            case 'event_name':
-                $orderby = 'Registration.Event.EVT_name';
-                break;
-            default: //'TXN_timestamp'
-                $orderby = 'TXN_timestamp';
-        }
-
-        $sort         = ! empty($this->_req_data['order']) ? $this->_req_data['order'] : 'DESC';
-        $current_page = ! empty($this->_req_data['paged']) ? $this->_req_data['paged'] : 1;
-        $per_page     = ! empty($perpage) ? $perpage : 10;
-        $per_page     = ! empty($this->_req_data['perpage']) ? $this->_req_data['perpage'] : $per_page;
-
-        $offset = ($current_page - 1) * $per_page;
-        $limit  = array($offset, $per_page);
-
-        $_where = array(
-            'TXN_timestamp'          => array('BETWEEN', array($start_date, $end_date)),
-            'Registration.REG_count' => 1,
-        );
-
-        if (isset($this->_req_data['EVT_ID'])) {
-            $_where['Registration.EVT_ID'] = $this->_req_data['EVT_ID'];
-        }
-
-        if (isset($this->_req_data['s'])) {
-            $search_string = '%' . $this->_req_data['s'] . '%';
-            $_where['OR']  = array(
-                'Registration.Event.EVT_name'         => array('LIKE', $search_string),
-                'Registration.Event.EVT_desc'         => array('LIKE', $search_string),
-                'Registration.Event.EVT_short_desc'   => array('LIKE', $search_string),
-                'Registration.Attendee.ATT_full_name' => array('LIKE', $search_string),
-                'Registration.Attendee.ATT_fname'     => array('LIKE', $search_string),
-                'Registration.Attendee.ATT_lname'     => array('LIKE', $search_string),
-                'Registration.Attendee.ATT_short_bio' => array('LIKE', $search_string),
-                'Registration.Attendee.ATT_email'     => array('LIKE', $search_string),
-                'Registration.Attendee.ATT_address'   => array('LIKE', $search_string),
-                'Registration.Attendee.ATT_address2'  => array('LIKE', $search_string),
-                'Registration.Attendee.ATT_city'      => array('LIKE', $search_string),
-                'Registration.REG_final_price'        => array('LIKE', $search_string),
-                'Registration.REG_code'               => array('LIKE', $search_string),
-                'Registration.REG_count'              => array('LIKE', $search_string),
-                'Registration.REG_group_size'         => array('LIKE', $search_string),
-                'Registration.Ticket.TKT_name'        => array('LIKE', $search_string),
-                'Registration.Ticket.TKT_description' => array('LIKE', $search_string),
-                'Payment.PAY_source'                  => array('LIKE', $search_string),
-                'Payment.Payment_Method.PMD_name'     => array('LIKE', $search_string),
-                'TXN_session_data'                    => array('LIKE', $search_string),
-                'Payment.PAY_txn_id_chq_nmbr'         => array('LIKE', $search_string),
-            );
-        }
-
-        //failed transactions
-        $failed    = (! empty($this->_req_data['status']) && $this->_req_data['status'] === 'failed' && ! $count)
-                     || ($count && $view === 'failed');
-        $abandoned = (! empty($this->_req_data['status']) && $this->_req_data['status'] === 'abandoned' && ! $count)
-                     || ($count && $view === 'abandoned');
-
-        if ($failed) {
-            $_where['STS_ID'] = EEM_Transaction::failed_status_code;
-        } else if ($abandoned) {
-            $_where['STS_ID'] = EEM_Transaction::abandoned_status_code;
-        } else {
-            $_where['STS_ID']  = array('!=', EEM_Transaction::failed_status_code);
-            $_where['STS_ID*'] = array('!=', EEM_Transaction::abandoned_status_code);
-        }
-
-        $query_params = array(
-            $_where,
-            'order_by'                 => array($orderby => $sort),
-            'limit'                    => $limit,
-            'default_where_conditions' => EEM_Base::default_where_conditions_this_only,
-        );
-
-        $transactions = $count
-            ? $TXN->count(array($_where), 'TXN_ID', true)
-            : $TXN->get_all($query_params);
-
-        return $transactions;
-    }
+	/**
+	 * @var EE_Transaction
+	 */
+	private $_transaction;
+
+	/**
+	 * @var EE_Session
+	 */
+	private $_session;
+
+	/**
+	 * @var array $_txn_status
+	 */
+	private static $_txn_status;
+
+	/**
+	 * @var array $_pay_status
+	 */
+	private static $_pay_status;
+
+	/**
+	 * @var array $_existing_reg_payment_REG_IDs
+	 */
+	protected $_existing_reg_payment_REG_IDs = null;
+
+
+	/**
+	 * @Constructor
+	 * @access public
+	 * @param bool $routing
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws ReflectionException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 */
+	public function __construct($routing = true)
+	{
+		parent::__construct($routing);
+	}
+
+
+	/**
+	 *    _init_page_props
+	 *
+	 * @return void
+	 */
+	protected function _init_page_props()
+	{
+		$this->page_slug        = TXN_PG_SLUG;
+		$this->page_label       = esc_html__('Transactions', 'event_espresso');
+		$this->_admin_base_url  = TXN_ADMIN_URL;
+		$this->_admin_base_path = TXN_ADMIN;
+	}
+
+
+	/**
+	 *    _ajax_hooks
+	 *
+	 * @return void
+	 */
+	protected function _ajax_hooks()
+	{
+		add_action('wp_ajax_espresso_apply_payment', array($this, 'apply_payments_or_refunds'));
+		add_action('wp_ajax_espresso_apply_refund', array($this, 'apply_payments_or_refunds'));
+		add_action('wp_ajax_espresso_delete_payment', array($this, 'delete_payment'));
+	}
+
+
+	/**
+	 *    _define_page_props
+	 *
+	 * @return void
+	 */
+	protected function _define_page_props()
+	{
+		$this->_admin_page_title = $this->page_label;
+		$this->_labels           = array(
+			'buttons' => array(
+				'add'    => esc_html__('Add New Transaction', 'event_espresso'),
+				'edit'   => esc_html__('Edit Transaction', 'event_espresso'),
+				'delete' => esc_html__('Delete Transaction', 'event_espresso'),
+			),
+		);
+	}
+
+
+	/**
+	 *        grab url requests and route them
+	 *
+	 * @access private
+	 * @return void
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 */
+	public function _set_page_routes()
+	{
+
+		$this->_set_transaction_status_array();
+
+		$txn_id = ! empty($this->_req_data['TXN_ID'])
+				  && ! is_array($this->_req_data['TXN_ID'])
+			? $this->_req_data['TXN_ID']
+			: 0;
+
+		$this->_page_routes = array(
+
+			'default' => array(
+				'func'       => '_transactions_overview_list_table',
+				'capability' => 'ee_read_transactions',
+			),
+
+			'view_transaction' => array(
+				'func'       => '_transaction_details',
+				'capability' => 'ee_read_transaction',
+				'obj_id'     => $txn_id,
+			),
+
+			'send_payment_reminder' => array(
+				'func'       => '_send_payment_reminder',
+				'noheader'   => true,
+				'capability' => 'ee_send_message',
+			),
+
+			'espresso_apply_payment' => array(
+				'func'       => 'apply_payments_or_refunds',
+				'noheader'   => true,
+				'capability' => 'ee_edit_payments',
+			),
+
+			'espresso_apply_refund' => array(
+				'func'       => 'apply_payments_or_refunds',
+				'noheader'   => true,
+				'capability' => 'ee_edit_payments',
+			),
+
+			'espresso_delete_payment' => array(
+				'func'       => 'delete_payment',
+				'noheader'   => true,
+				'capability' => 'ee_delete_payments',
+			),
+
+		);
+	}
+
+
+	protected function _set_page_config()
+	{
+		$this->_page_config = array(
+			'default'          => array(
+				'nav'           => array(
+					'label' => esc_html__('Overview', 'event_espresso'),
+					'order' => 10,
+				),
+				'list_table'    => 'EE_Admin_Transactions_List_Table',
+				'help_tabs'     => array(
+					'transactions_overview_help_tab'                       => array(
+						'title'    => esc_html__('Transactions Overview', 'event_espresso'),
+						'filename' => 'transactions_overview',
+					),
+					'transactions_overview_table_column_headings_help_tab' => array(
+						'title'    => esc_html__('Transactions Table Column Headings', 'event_espresso'),
+						'filename' => 'transactions_overview_table_column_headings',
+					),
+					'transactions_overview_views_filters_help_tab'         => array(
+						'title'    => esc_html__('Transaction Views & Filters & Search', 'event_espresso'),
+						'filename' => 'transactions_overview_views_filters_search',
+					),
+				),
+				'help_tour'     => array('Transactions_Overview_Help_Tour'),
+				/**
+				 * commented out because currently we are not displaying tips for transaction list table status but this
+				 * may change in a later iteration so want to keep the code for then.
+				 */
+				//'qtips' => array( 'Transactions_List_Table_Tips' ),
+				'require_nonce' => false,
+			),
+			'view_transaction' => array(
+				'nav'       => array(
+					'label'      => esc_html__('View Transaction', 'event_espresso'),
+					'order'      => 5,
+					'url'        => isset($this->_req_data['TXN_ID'])
+						? add_query_arg(array('TXN_ID' => $this->_req_data['TXN_ID']), $this->_current_page_view_url)
+						: $this->_admin_base_url,
+					'persistent' => false,
+				),
+				'help_tabs' => array(
+					'transactions_view_transaction_help_tab'                                              => array(
+						'title'    => esc_html__('View Transaction', 'event_espresso'),
+						'filename' => 'transactions_view_transaction',
+					),
+					'transactions_view_transaction_transaction_details_table_help_tab'                    => array(
+						'title'    => esc_html__('Transaction Details Table', 'event_espresso'),
+						'filename' => 'transactions_view_transaction_transaction_details_table',
+					),
+					'transactions_view_transaction_attendees_registered_help_tab'                         => array(
+						'title'    => esc_html__('Attendees Registered', 'event_espresso'),
+						'filename' => 'transactions_view_transaction_attendees_registered',
+					),
+					'transactions_view_transaction_views_primary_registrant_billing_information_help_tab' => array(
+						'title'    => esc_html__('Primary Registrant & Billing Information', 'event_espresso'),
+						'filename' => 'transactions_view_transaction_primary_registrant_billing_information',
+					),
+				),
+				'qtips'     => array('Transaction_Details_Tips'),
+				'help_tour' => array('Transaction_Details_Help_Tour'),
+				'metaboxes' => array('_transaction_details_metaboxes'),
+
+				'require_nonce' => false,
+			),
+		);
+	}
+
+
+	/**
+	 * The below methods aren't used by this class currently
+	 */
+	protected function _add_screen_options()
+	{
+		//noop
+	}
+
+	protected function _add_feature_pointers()
+	{
+		//noop
+	}
+
+	public function admin_init()
+	{
+		// IF a registration was JUST added via the admin...
+		if (isset(
+			$this->_req_data['redirect_from'],
+			$this->_req_data['EVT_ID'],
+			$this->_req_data['event_name']
+		)) {
+			// then set a cookie so that we can block any attempts to use
+			// the back button as a way to enter another registration.
+			setcookie(
+				'ee_registration_added',
+				$this->_req_data['EVT_ID'], time() + WEEK_IN_SECONDS, '/'
+			);
+			// and update the global
+			$_COOKIE['ee_registration_added'] = $this->_req_data['EVT_ID'];
+		}
+		EE_Registry::$i18n_js_strings['invalid_server_response'] = esc_html__(
+			'An error occurred! Your request may have been processed, but a valid response from the server was not received. Please refresh the page and try again.',
+			'event_espresso'
+		);
+		EE_Registry::$i18n_js_strings['error_occurred']          = esc_html__(
+			'An error occurred! Please refresh the page and try again.',
+			'event_espresso'
+		);
+		EE_Registry::$i18n_js_strings['txn_status_array']        = self::$_txn_status;
+		EE_Registry::$i18n_js_strings['pay_status_array']        = self::$_pay_status;
+		EE_Registry::$i18n_js_strings['payments_total']          = esc_html__('Payments Total', 'event_espresso');
+		EE_Registry::$i18n_js_strings['transaction_overpaid']    = esc_html__(
+			'This transaction has been overpaid ! Payments Total',
+			'event_espresso'
+		);
+	}
+
+	public function admin_notices()
+	{
+		//noop
+	}
+
+	public function admin_footer_scripts()
+	{
+		//noop
+	}
+
+
+	/**
+	 * _set_transaction_status_array
+	 * sets list of transaction statuses
+	 *
+	 * @access private
+	 * @return void
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 */
+	private function _set_transaction_status_array()
+	{
+		self::$_txn_status = EEM_Transaction::instance()->status_array(true);
+	}
+
+
+	/**
+	 * get_transaction_status_array
+	 * return the transaction status array for wp_list_table
+	 *
+	 * @access public
+	 * @return array
+	 */
+	public function get_transaction_status_array()
+	{
+		return self::$_txn_status;
+	}
+
+
+	/**
+	 *    get list of payment statuses
+	 *
+	 * @access private
+	 * @return void
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 */
+	private function _get_payment_status_array()
+	{
+		self::$_pay_status                      = EEM_Payment::instance()->status_array(true);
+		$this->_template_args['payment_status'] = self::$_pay_status;
+
+	}
+
+
+	/**
+	 *    _add_screen_options_default
+	 *
+	 * @access protected
+	 * @return void
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 */
+	protected function _add_screen_options_default()
+	{
+		$this->_per_page_screen_option();
+	}
+
+
+	/**
+	 * load_scripts_styles
+	 *
+	 * @access public
+	 * @return void
+	 */
+	public function load_scripts_styles()
+	{
+		//enqueue style
+		wp_register_style(
+			'espresso_txn',
+			TXN_ASSETS_URL . 'espresso_transactions_admin.css',
+			array(),
+			EVENT_ESPRESSO_VERSION
+		);
+		wp_enqueue_style('espresso_txn');
+		//scripts
+		wp_register_script('espresso_txn', TXN_ASSETS_URL . 'espresso_transactions_admin.js', array(
+			'ee_admin_js',
+			'ee-datepicker',
+			'jquery-ui-datepicker',
+			'jquery-ui-draggable',
+			'ee-dialog',
+			'ee-accounting',
+			'ee-serialize-full-array',
+		), EVENT_ESPRESSO_VERSION, true);
+		wp_enqueue_script('espresso_txn');
+	}
+
+
+	/**
+	 *    load_scripts_styles_view_transaction
+	 *
+	 * @access public
+	 * @return void
+	 */
+	public function load_scripts_styles_view_transaction()
+	{
+		//styles
+		wp_enqueue_style('espresso-ui-theme');
+	}
+
+
+	/**
+	 *    load_scripts_styles_default
+	 *
+	 * @access public
+	 * @return void
+	 */
+	public function load_scripts_styles_default()
+	{
+		//styles
+		wp_enqueue_style('espresso-ui-theme');
+	}
+
+
+	/**
+	 *    _set_list_table_views_default
+	 *
+	 * @access protected
+	 * @return void
+	 */
+	protected function _set_list_table_views_default()
+	{
+		$this->_views = array(
+			'all'       => array(
+				'slug'  => 'all',
+				'label' => esc_html__('View All Transactions', 'event_espresso'),
+				'count' => 0,
+			),
+			'abandoned' => array(
+				'slug'  => 'abandoned',
+				'label' => esc_html__('Abandoned Transactions', 'event_espresso'),
+				'count' => 0,
+			),
+			'failed'    => array(
+				'slug'  => 'failed',
+				'label' => esc_html__('Failed Transactions', 'event_espresso'),
+				'count' => 0,
+			),
+		);
+	}
+
+
+	/**
+	 * _set_transaction_object
+	 * This sets the _transaction property for the transaction details screen
+	 *
+	 * @access private
+	 * @return void
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws RuntimeException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 * @throws ReflectionException
+	 */
+	private function _set_transaction_object()
+	{
+		if ($this->_transaction instanceof EE_Transaction) {
+			return;
+		} //get out we've already set the object
+
+		$TXN_ID = ! empty($this->_req_data['TXN_ID'])
+			? absint($this->_req_data['TXN_ID'])
+			: false;
+
+		//get transaction object
+		$this->_transaction = EEM_Transaction::instance()->get_one_by_ID($TXN_ID);
+		$this->_session     = $this->_transaction instanceof EE_Transaction
+			? $this->_transaction->get('TXN_session_data')
+			: null;
+		$this->_transaction->verify_abandoned_transaction_status();
+
+		if (! $this->_transaction instanceof EE_Transaction) {
+			$error_msg = sprintf(
+				esc_html__(
+					'An error occurred and the details for the transaction with the ID # %d could not be retrieved.',
+					'event_espresso'
+				),
+				$TXN_ID
+			);
+			EE_Error::add_error($error_msg, __FILE__, __FUNCTION__, __LINE__);
+		}
+	}
+
+
+	/**
+	 *    _transaction_legend_items
+	 *
+	 * @access protected
+	 * @return array
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws ReflectionException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 */
+	protected function _transaction_legend_items()
+	{
+		EE_Registry::instance()->load_helper('MSG_Template');
+		$items = array();
+
+		if (EE_Registry::instance()->CAP->current_user_can(
+			'ee_read_global_messages',
+			'view_filtered_messages'
+		)) {
+			$related_for_icon = EEH_MSG_Template::get_message_action_icon('see_notifications_for');
+			if (is_array($related_for_icon)
+				&& isset($related_for_icon['css_class'], $related_for_icon['label'])
+			) {
+				$items['view_related_messages'] = array(
+					'class' => $related_for_icon['css_class'],
+					'desc'  => $related_for_icon['label'],
+				);
+			}
+		}
+
+		$items = apply_filters(
+			'FHEE__Transactions_Admin_Page___transaction_legend_items__items',
+			array_merge(
+				$items,
+				array(
+					'view_details'          => array(
+						'class' => 'dashicons dashicons-cart',
+						'desc'  => esc_html__('View Transaction Details', 'event_espresso'),
+					),
+					'view_invoice'          => array(
+						'class' => 'dashicons dashicons-media-spreadsheet',
+						'desc'  => esc_html__('View Transaction Invoice', 'event_espresso'),
+					),
+					'view_receipt'          => array(
+						'class' => 'dashicons dashicons-media-default',
+						'desc'  => esc_html__('View Transaction Receipt', 'event_espresso'),
+					),
+					'view_registration'     => array(
+						'class' => 'dashicons dashicons-clipboard',
+						'desc'  => esc_html__('View Registration Details', 'event_espresso'),
+					),
+					'payment_overview_link' => array(
+						'class' => 'dashicons dashicons-money',
+						'desc'  => esc_html__('Make Payment on Frontend', 'event_espresso'),
+					),
+				)
+			)
+		);
+
+		if (EE_Registry::instance()->CAP->current_user_can(
+			'ee_send_message',
+			'espresso_transactions_send_payment_reminder'
+		)) {
+			if (EEH_MSG_Template::is_mt_active('payment_reminder')) {
+				$items['send_payment_reminder'] = array(
+					'class' => 'dashicons dashicons-email-alt',
+					'desc'  => esc_html__('Send Payment Reminder', 'event_espresso'),
+				);
+			} else {
+				$items['blank*'] = array(
+					'class' => '',
+					'desc'  => '',
+				);
+			}
+		} else {
+			$items['blank*'] = array(
+				'class' => '',
+				'desc'  => '',
+			);
+		}
+		$more_items = apply_filters(
+			'FHEE__Transactions_Admin_Page___transaction_legend_items__more_items',
+			array(
+				'overpaid'   => array(
+					'class' => 'ee-status-legend ee-status-legend-' . EEM_Transaction::overpaid_status_code,
+					'desc'  => EEH_Template::pretty_status(
+						EEM_Transaction::overpaid_status_code,
+						false,
+						'sentence'
+					),
+				),
+				'complete'   => array(
+					'class' => 'ee-status-legend ee-status-legend-' . EEM_Transaction::complete_status_code,
+					'desc'  => EEH_Template::pretty_status(
+						EEM_Transaction::complete_status_code,
+						false,
+						'sentence'
+					),
+				),
+				'incomplete' => array(
+					'class' => 'ee-status-legend ee-status-legend-' . EEM_Transaction::incomplete_status_code,
+					'desc'  => EEH_Template::pretty_status(
+						EEM_Transaction::incomplete_status_code,
+						false,
+						'sentence'
+					),
+				),
+				'abandoned'  => array(
+					'class' => 'ee-status-legend ee-status-legend-' . EEM_Transaction::abandoned_status_code,
+					'desc'  => EEH_Template::pretty_status(
+						EEM_Transaction::abandoned_status_code,
+						false,
+						'sentence'
+					),
+				),
+				'failed'     => array(
+					'class' => 'ee-status-legend ee-status-legend-' . EEM_Transaction::failed_status_code,
+					'desc'  => EEH_Template::pretty_status(
+						EEM_Transaction::failed_status_code,
+						false,
+						'sentence'
+					),
+				),
+			)
+		);
+
+		return array_merge($items, $more_items);
+	}
+
+
+	/**
+	 *    _transactions_overview_list_table
+	 *
+	 * @access protected
+	 * @return void
+	 * @throws DomainException
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 * @throws ReflectionException
+	 */
+	protected function _transactions_overview_list_table()
+	{
+		$this->_admin_page_title = esc_html__('Transactions', 'event_espresso');
+		$event = isset($this->_req_data['EVT_ID'])
+			? EEM_Event::instance()->get_one_by_ID($this->_req_data['EVT_ID'])
+			: null;
+		$this->_template_args['admin_page_header'] = $event instanceof EE_Event
+			? sprintf(
+				esc_html__(
+					'%sViewing Transactions for the Event: %s%s',
+					'event_espresso'
+				),
+				'<h3>',
+				'<a href="'
+				. EE_Admin_Page::add_query_args_and_nonce(
+					array('action' => 'edit', 'post' => $event->ID()),
+					EVENTS_ADMIN_URL
+				)
+				. '" title="'
+				. esc_attr__(
+					'Click to Edit event',
+					'event_espresso'
+				)
+				. '">' . $event->get('EVT_name') . '</a>',
+				'</h3>'
+			)
+			: '';
+		$this->_template_args['after_list_table']  = $this->_display_legend($this->_transaction_legend_items());
+		$this->display_admin_list_table_page_with_no_sidebar();
+	}
+
+
+	/**
+	 *    _transaction_details
+	 * generates HTML for the View Transaction Details Admin page
+	 *
+	 * @access protected
+	 * @return void
+	 * @throws DomainException
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 * @throws RuntimeException
+	 * @throws ReflectionException
+	 */
+	protected function _transaction_details()
+	{
+		do_action('AHEE__Transactions_Admin_Page__transaction_details__start', $this->_transaction);
+
+		$this->_set_transaction_status_array();
+
+		$this->_template_args                      = array();
+		$this->_template_args['transactions_page'] = $this->_wp_page_slug;
+
+		$this->_set_transaction_object();
+
+		$primary_registration = $this->_transaction->primary_registration();
+		$attendee = $primary_registration instanceof EE_Registration
+			? $primary_registration->attendee()
+			: null;
+
+		$this->_template_args['txn_nmbr']['value'] = $this->_transaction->ID();
+		$this->_template_args['txn_nmbr']['label'] = esc_html__('Transaction Number', 'event_espresso');
+
+		$this->_template_args['txn_datetime']['value'] = $this->_transaction->get_i18n_datetime('TXN_timestamp');
+		$this->_template_args['txn_datetime']['label'] = esc_html__('Date', 'event_espresso');
+
+		$this->_template_args['txn_status']['value'] = self::$_txn_status[$this->_transaction->get('STS_ID')];
+		$this->_template_args['txn_status']['label'] = esc_html__('Transaction Status', 'event_espresso');
+		$this->_template_args['txn_status']['class'] = 'status-' . $this->_transaction->get('STS_ID');
+
+		$this->_template_args['grand_total'] = $this->_transaction->get('TXN_total');
+		$this->_template_args['total_paid']  = $this->_transaction->get('TXN_paid');
+
+		$amount_due = $this->_transaction->get('TXN_total') - $this->_transaction->get('TXN_paid');
+		$this->_template_args['amount_due'] = EEH_Template::format_currency(
+			$amount_due,
+			true
+		);
+		if (EE_Registry::instance()->CFG->currency->sign_b4) {
+			$this->_template_args['amount_due'] = EE_Registry::instance()->CFG->currency->sign
+												  . $this->_template_args['amount_due'];
+		} else {
+			$this->_template_args['amount_due'] .= EE_Registry::instance()->CFG->currency->sign;
+		}
+		$this->_template_args['amount_due_class'] = '';
+
+		if ($this->_transaction->get('TXN_paid') == $this->_transaction->get('TXN_total')) {
+			// paid in full
+			$this->_template_args['amount_due'] = false;
+		} elseif ($this->_transaction->get('TXN_paid') > $this->_transaction->get('TXN_total')) {
+			// overpaid
+			$this->_template_args['amount_due_class'] = 'txn-overview-no-payment-spn';
+		} elseif ($this->_transaction->get('TXN_total') > 0
+				  && $this->_transaction->get('TXN_paid') > 0
+		) {
+			// monies owing
+			$this->_template_args['amount_due_class'] = 'txn-overview-part-payment-spn';
+		} elseif ($this->_transaction->get('TXN_total') > 0
+				  && $this->_transaction->get('TXN_paid') == 0
+		) {
+			// no payments made yet
+			$this->_template_args['amount_due_class'] = 'txn-overview-no-payment-spn';
+		} elseif ($this->_transaction->get('TXN_total') == 0) {
+			// free event
+			$this->_template_args['amount_due'] = false;
+		}
+
+		$payment_method = $this->_transaction->payment_method();
+
+		$this->_template_args['method_of_payment_name'] = $payment_method instanceof EE_Payment_Method
+			? $payment_method->admin_name()
+			: esc_html__('Unknown', 'event_espresso');
+
+		$this->_template_args['currency_sign'] = EE_Registry::instance()->CFG->currency->sign;
+		// link back to overview
+		$this->_template_args['txn_overview_url'] = ! empty($_SERVER['HTTP_REFERER'])
+			? $_SERVER['HTTP_REFERER']
+			: TXN_ADMIN_URL;
+
+
+		// next link
+		$next_txn                                 = $this->_transaction->next(
+			null,
+			array(array('STS_ID' => array('!=', EEM_Transaction::failed_status_code))),
+			'TXN_ID'
+		);
+		$this->_template_args['next_transaction'] = $next_txn
+			? $this->_next_link(
+				EE_Admin_Page::add_query_args_and_nonce(
+					array('action' => 'view_transaction', 'TXN_ID' => $next_txn['TXN_ID']),
+					TXN_ADMIN_URL
+				),
+				'dashicons dashicons-arrow-right ee-icon-size-22'
+			)
+			: '';
+		// previous link
+		$previous_txn                                 = $this->_transaction->previous(
+			null,
+			array(array('STS_ID' => array('!=', EEM_Transaction::failed_status_code))),
+			'TXN_ID'
+		);
+		$this->_template_args['previous_transaction'] = $previous_txn
+			? $this->_previous_link(
+				EE_Admin_Page::add_query_args_and_nonce(
+					array('action' => 'view_transaction', 'TXN_ID' => $previous_txn['TXN_ID']),
+					TXN_ADMIN_URL
+				),
+				'dashicons dashicons-arrow-left ee-icon-size-22'
+			)
+			: '';
+
+		// were we just redirected here after adding a new registration ???
+		if (isset(
+			$this->_req_data['redirect_from'],
+			$this->_req_data['EVT_ID'],
+			$this->_req_data['event_name']
+		)) {
+			if (EE_Registry::instance()->CAP->current_user_can(
+				'ee_edit_registrations',
+				'espresso_registrations_new_registration',
+				$this->_req_data['EVT_ID']
+			)) {
+				$this->_admin_page_title .= '<a id="add-new-registration" class="add-new-h2 button-primary" href="';
+				$this->_admin_page_title .= EE_Admin_Page::add_query_args_and_nonce(
+					array(
+						'page'     => 'espresso_registrations',
+						'action'   => 'new_registration',
+						'return'   => 'default',
+						'TXN_ID'   => $this->_transaction->ID(),
+						'event_id' => $this->_req_data['EVT_ID'],
+					),
+					REG_ADMIN_URL
+				);
+				$this->_admin_page_title .= '">';
+
+				$this->_admin_page_title .= sprintf(
+					esc_html__('Add Another New Registration to Event: "%1$s" ?', 'event_espresso'),
+					htmlentities(urldecode($this->_req_data['event_name']), ENT_QUOTES, 'UTF-8')
+				);
+				$this->_admin_page_title .= '</a>';
+			}
+			EE_Registry::instance()->SSN->clear_session(__CLASS__, __FUNCTION__);
+		}
+		// grab messages at the last second
+		$this->_template_args['notices'] = EE_Error::get_notices();
+		// path to template
+		$template_path                             = TXN_TEMPLATE_PATH . 'txn_admin_details_header.template.php';
+		$this->_template_args['admin_page_header'] = EEH_Template::display_template(
+			$template_path,
+			$this->_template_args,
+			true
+		);
+
+		// the details template wrapper
+		$this->display_admin_page_with_sidebar();
+
+	}
+
+
+	/**
+	 *        _transaction_details_metaboxes
+	 *
+	 * @access protected
+	 * @return void
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 * @throws RuntimeException
+	 * @throws ReflectionException
+	 */
+	protected function _transaction_details_metaboxes()
+	{
+
+		$this->_set_transaction_object();
+
+		add_meta_box(
+			'edit-txn-details-mbox',
+			esc_html__('Transaction Details', 'event_espresso'),
+			array($this, 'txn_details_meta_box'),
+			$this->_wp_page_slug,
+			'normal',
+			'high'
+		);
+		add_meta_box(
+			'edit-txn-attendees-mbox',
+			esc_html__('Attendees Registered in this Transaction', 'event_espresso'),
+			array($this, 'txn_attendees_meta_box'),
+			$this->_wp_page_slug,
+			'normal',
+			'high',
+			array('TXN_ID' => $this->_transaction->ID())
+		);
+		add_meta_box(
+			'edit-txn-registrant-mbox',
+			esc_html__('Primary Contact', 'event_espresso'),
+			array($this, 'txn_registrant_side_meta_box'),
+			$this->_wp_page_slug,
+			'side',
+			'high'
+		);
+		add_meta_box(
+			'edit-txn-billing-info-mbox',
+			esc_html__('Billing Information', 'event_espresso'),
+			array($this, 'txn_billing_info_side_meta_box'),
+			$this->_wp_page_slug,
+			'side',
+			'high'
+		);
+	}
+
+
+	/**
+	 * Callback for transaction actions metabox.
+	 *
+	 * @param EE_Transaction|null $transaction
+	 * @throws DomainException
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 * @throws ReflectionException
+	 * @throws RuntimeException
+	 */
+	public function getActionButtons(EE_Transaction $transaction = null)
+	{
+		$content = '';
+		$actions = array();
+		if (! $transaction instanceof EE_Transaction) {
+			return $content;
+		}
+		/** @var EE_Registration $primary_registration */
+		$primary_registration = $transaction->primary_registration();
+		$attendee = $primary_registration instanceof EE_Registration
+			? $primary_registration->attendee()
+			: null;
+
+		if ($attendee instanceof EE_Attendee
+			&& EE_Registry::instance()->CAP->current_user_can(
+				'ee_send_message',
+				'espresso_transactions_send_payment_reminder'
+			)
+		) {
+			$actions['payment_reminder'] =
+				EEH_MSG_Template::is_mt_active('payment_reminder')
+				&& $this->_transaction->get('STS_ID') !== EEM_Transaction::complete_status_code
+				&& $this->_transaction->get('STS_ID') !== EEM_Transaction::overpaid_status_code
+					? EEH_Template::get_button_or_link(
+						EE_Admin_Page::add_query_args_and_nonce(
+							array(
+								'action'      => 'send_payment_reminder',
+								'TXN_ID'      => $this->_transaction->ID(),
+								'redirect_to' => 'view_transaction',
+							),
+							TXN_ADMIN_URL
+						),
+						esc_html__(' Send Payment Reminder', 'event_espresso'),
+						'button secondary-button',
+						'dashicons dashicons-email-alt'
+					)
+					: '';
+		}
+
+		if ($primary_registration instanceof EE_Registration
+			&& EEH_MSG_Template::is_mt_active('receipt')
+		) {
+			$actions['receipt'] = EEH_Template::get_button_or_link(
+				$primary_registration->receipt_url(),
+				esc_html__('View Receipt', 'event_espresso'),
+				'button secondary-button',
+				'dashicons dashicons-media-default'
+			);
+		}
+
+		if ($primary_registration instanceof EE_Registration
+			&& EEH_MSG_Template::is_mt_active('invoice')
+		) {
+			$actions['invoice'] = EEH_Template::get_button_or_link(
+				$primary_registration->invoice_url(),
+				esc_html__('View Invoice', 'event_espresso'),
+				'button secondary-button',
+				'dashicons dashicons-media-spreadsheet'
+			);
+		}
+		$actions = array_filter(
+			apply_filters('FHEE__Transactions_Admin_Page__getActionButtons__actions', $actions, $transaction)
+		);
+		if ($actions) {
+			$content = '<ul>';
+			$content .= '<li>' . implode('</li><li>', $actions) . '</li>';
+			$content .= '</uL>';
+		}
+		return $content;
+	}
+
+
+	/**
+	 * txn_details_meta_box
+	 * generates HTML for the Transaction main meta box
+	 *
+	 * @return void
+	 * @throws DomainException
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 * @throws RuntimeException
+	 * @throws ReflectionException
+	 */
+	public function txn_details_meta_box()
+	{
+		$this->_set_transaction_object();
+		$this->_template_args['TXN_ID']   = $this->_transaction->ID();
+		$this->_template_args['attendee'] = $this->_transaction->primary_registration() instanceof EE_Registration
+			? $this->_transaction->primary_registration()->attendee()
+			: null;
+		$this->_template_args['can_edit_payments'] = EE_Registry::instance()->CAP->current_user_can(
+			'ee_edit_payments',
+			'apply_payment_or_refund_from_registration_details'
+		);
+		$this->_template_args['can_delete_payments'] = EE_Registry::instance()->CAP->current_user_can(
+			'ee_delete_payments',
+			'delete_payment_from_registration_details'
+		);
+
+		//get line table
+		EEH_Autoloader::register_line_item_display_autoloaders();
+		$Line_Item_Display                       = new EE_Line_Item_Display(
+			'admin_table',
+			'EE_Admin_Table_Line_Item_Display_Strategy'
+		);
+		$this->_template_args['line_item_table'] = $Line_Item_Display->display_line_item(
+			$this->_transaction->total_line_item()
+		);
+		$this->_template_args['REG_code']        = $this->_transaction->get_first_related('Registration')
+																	  ->get('REG_code');
+
+		// process taxes
+		$taxes                         = $this->_transaction->get_many_related(
+			'Line_Item',
+			array(array('LIN_type' => EEM_Line_Item::type_tax))
+		);
+		$this->_template_args['taxes'] = ! empty($taxes) ? $taxes : false;
+
+		$this->_template_args['grand_total']     = EEH_Template::format_currency(
+			$this->_transaction->get('TXN_total'),
+			false,
+			false
+		);
+		$this->_template_args['grand_raw_total'] = $this->_transaction->get('TXN_total');
+		$this->_template_args['TXN_status']      = $this->_transaction->get('STS_ID');
+
+		// process payment details
+		$payments = $this->_transaction->get_many_related('Payment');
+		if (! empty($payments)) {
+			$this->_template_args['payments']              = $payments;
+			$this->_template_args['existing_reg_payments'] = $this->_get_registration_payment_IDs($payments);
+		} else {
+			$this->_template_args['payments']              = false;
+			$this->_template_args['existing_reg_payments'] = array();
+		}
+
+		$this->_template_args['edit_payment_url']   = add_query_arg(array('action' => 'edit_payment'), TXN_ADMIN_URL);
+		$this->_template_args['delete_payment_url'] = add_query_arg(
+			array('action' => 'espresso_delete_payment'),
+			TXN_ADMIN_URL
+		);
+
+		if (isset($txn_details['invoice_number'])) {
+			$this->_template_args['txn_details']['invoice_number']['value'] = $this->_template_args['REG_code'];
+			$this->_template_args['txn_details']['invoice_number']['label'] = esc_html__(
+				'Invoice Number',
+				'event_espresso'
+			);
+		}
+
+		$this->_template_args['txn_details']['registration_session']['value'] = $this->_transaction
+			->get_first_related('Registration')
+			->get('REG_session');
+		$this->_template_args['txn_details']['registration_session']['label'] = esc_html__(
+			'Registration Session',
+			'event_espresso'
+		);
+
+		$this->_template_args['txn_details']['ip_address']['value'] = isset($this->_session['ip_address'])
+			? $this->_session['ip_address']
+			: '';
+		$this->_template_args['txn_details']['ip_address']['label'] = esc_html__(
+			'Transaction placed from IP',
+			'event_espresso'
+		);
+
+		$this->_template_args['txn_details']['user_agent']['value'] = isset($this->_session['user_agent'])
+			? $this->_session['user_agent']
+			: '';
+		$this->_template_args['txn_details']['user_agent']['label'] = esc_html__(
+			'Registrant User Agent',
+			'event_espresso'
+		);
+
+		$reg_steps = '<ul>';
+		foreach ($this->_transaction->reg_steps() as $reg_step => $reg_step_status) {
+			if ($reg_step_status === true) {
+				$reg_steps .= '<li style="color:#70cc50">'
+							  . sprintf(
+								  esc_html__('%1$s : Completed', 'event_espresso'),
+								  ucwords(str_replace('_', ' ', $reg_step))
+							  )
+							  . '</li>';
+			} elseif (is_numeric($reg_step_status) && $reg_step_status !== false) {
+				$reg_steps .= '<li style="color:#2EA2CC">'
+							  . sprintf(
+								  esc_html__('%1$s : Initiated %2$s', 'event_espresso'),
+								  ucwords(str_replace('_', ' ', $reg_step)),
+								  date(
+									  get_option('date_format') . ' ' . get_option('time_format'),
+									  ($reg_step_status + (get_option('gmt_offset') * HOUR_IN_SECONDS))
+								  )
+							  )
+							  . '</li>';
+			} else {
+				$reg_steps .= '<li style="color:#E76700">'
+							  . sprintf(
+								  esc_html__('%1$s : Never Initiated', 'event_espresso'),
+								  ucwords(str_replace('_', ' ', $reg_step))
+							  )
+							  . '</li>';
+			}
+		}
+		$reg_steps                                                 .= '</ul>';
+		$this->_template_args['txn_details']['reg_steps']['value'] = $reg_steps;
+		$this->_template_args['txn_details']['reg_steps']['label'] = esc_html__(
+			'Registration Step Progress',
+			'event_espresso'
+		);
+
+
+		$this->_get_registrations_to_apply_payment_to();
+		$this->_get_payment_methods($payments);
+		$this->_get_payment_status_array();
+		$this->_get_reg_status_selection(); //sets up the template args for the reg status array for the transaction.
+
+		$this->_template_args['transaction_form_url']    = add_query_arg(array(
+			'action'  => 'edit_transaction',
+			'process' => 'transaction',
+		), TXN_ADMIN_URL);
+		$this->_template_args['apply_payment_form_url']  = add_query_arg(array(
+			'page'   => 'espresso_transactions',
+			'action' => 'espresso_apply_payment',
+		), WP_AJAX_URL);
+		$this->_template_args['delete_payment_form_url'] = add_query_arg(array(
+			'page'   => 'espresso_transactions',
+			'action' => 'espresso_delete_payment',
+		), WP_AJAX_URL);
+
+		$this->_template_args['action_buttons'] = $this->getActionButtons($this->_transaction);
+
+		// 'espresso_delete_payment_nonce'
+
+		$template_path = TXN_TEMPLATE_PATH . 'txn_admin_details_main_meta_box_txn_details.template.php';
+		echo EEH_Template::display_template($template_path, $this->_template_args, true);
+	}
+
+
+	/**
+	 * _get_registration_payment_IDs
+	 *    generates an array of Payment IDs and their corresponding Registration IDs
+	 *
+	 * @access protected
+	 * @param EE_Payment[] $payments
+	 * @return array
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 * @throws ReflectionException
+	 */
+	protected function _get_registration_payment_IDs($payments = array())
+	{
+		$existing_reg_payments = array();
+		// get all reg payments for these payments
+		$reg_payments = EEM_Registration_Payment::instance()->get_all(array(
+			array(
+				'PAY_ID' => array(
+					'IN',
+					array_keys($payments),
+				),
+			),
+		));
+		if (! empty($reg_payments)) {
+			foreach ($payments as $payment) {
+				if (! $payment instanceof EE_Payment) {
+					continue;
+				} elseif (! isset($existing_reg_payments[$payment->ID()])) {
+					$existing_reg_payments[$payment->ID()] = array();
+				}
+				foreach ($reg_payments as $reg_payment) {
+					if ($reg_payment instanceof EE_Registration_Payment
+						&& $reg_payment->payment_ID() === $payment->ID()
+					) {
+						$existing_reg_payments[$payment->ID()][] = $reg_payment->registration_ID();
+					}
+				}
+			}
+		}
+
+		return $existing_reg_payments;
+	}
+
+
+	/**
+	 * _get_registrations_to_apply_payment_to
+	 *    generates HTML for displaying a series of checkboxes in the admin payment modal window
+	 * which allows the admin to only apply the payment to the specific registrations
+	 *
+	 * @access protected
+	 * @return void
+	 * @throws \EE_Error
+	 */
+	protected function _get_registrations_to_apply_payment_to()
+	{
+		// we want any registration with an active status (ie: not deleted or cancelled)
+		$query_params                      = array(
+			array(
+				'STS_ID' => array(
+					'IN',
+					array(
+						EEM_Registration::status_id_approved,
+						EEM_Registration::status_id_pending_payment,
+						EEM_Registration::status_id_not_approved,
+					),
+				),
+			),
+		);
+		$registrations_to_apply_payment_to = EEH_HTML::br()
+											 . EEH_HTML::div(
+												 '',
+												 'txn-admin-apply-payment-to-registrations-dv',
+												 '',
+												 'clear: both; margin: 1.5em 0 0; display: none;'
+											 );
+		$registrations_to_apply_payment_to .= EEH_HTML::br() . EEH_HTML::div('', '', 'admin-primary-mbox-tbl-wrap');
+		$registrations_to_apply_payment_to .= EEH_HTML::table('', '', 'admin-primary-mbox-tbl');
+		$registrations_to_apply_payment_to .= EEH_HTML::thead(
+			EEH_HTML::tr(
+				EEH_HTML::th(esc_html__('ID', 'event_espresso')) .
+				EEH_HTML::th(esc_html__('Registrant', 'event_espresso')) .
+				EEH_HTML::th(esc_html__('Ticket', 'event_espresso')) .
+				EEH_HTML::th(esc_html__('Event', 'event_espresso')) .
+				EEH_HTML::th(esc_html__('Paid', 'event_espresso'), '', 'txn-admin-payment-paid-td jst-cntr') .
+				EEH_HTML::th(esc_html__('Owing', 'event_espresso'), '', 'txn-admin-payment-owing-td jst-cntr') .
+				EEH_HTML::th(esc_html__('Apply', 'event_espresso'), '', 'jst-cntr')
+			)
+		);
+		$registrations_to_apply_payment_to .= EEH_HTML::tbody();
+		// get registrations for TXN
+		$registrations = $this->_transaction->registrations($query_params);
+		$existing_reg_payments = $this->_template_args['existing_reg_payments'];
+		foreach ($registrations as $registration) {
+			if ($registration instanceof EE_Registration) {
+				$attendee_name                     = $registration->attendee() instanceof EE_Attendee
+					? $registration->attendee()->full_name()
+					: esc_html__('Unknown Attendee', 'event_espresso');
+				$owing                             = $registration->final_price() - $registration->paid();
+				$taxable                           = $registration->ticket()->taxable()
+					? ' <span class="smaller-text lt-grey-text"> ' . esc_html__('+ tax', 'event_espresso') . '</span>'
+					: '';
+				$checked = empty($existing_reg_payments) || in_array($registration->ID(), $existing_reg_payments)
+					? ' checked="checked"'
+					: '';
+				$disabled                          = $registration->final_price() > 0 ? '' : ' disabled';
+				$registrations_to_apply_payment_to .= EEH_HTML::tr(
+					EEH_HTML::td($registration->ID()) .
+					EEH_HTML::td($attendee_name) .
+					EEH_HTML::td(
+						$registration->ticket()->name() . ' : ' . $registration->ticket()->pretty_price() . $taxable
+					) .
+					EEH_HTML::td($registration->event_name()) .
+					EEH_HTML::td($registration->pretty_paid(), '', 'txn-admin-payment-paid-td jst-cntr') .
+					EEH_HTML::td(EEH_Template::format_currency($owing), '', 'txn-admin-payment-owing-td jst-cntr') .
+					EEH_HTML::td(
+						'<input type="checkbox" value="' . $registration->ID()
+						. '" name="txn_admin_payment[registrations]"'
+						. $checked . $disabled . '>',
+						'',
+						'jst-cntr'
+					),
+					'apply-payment-registration-row-' . $registration->ID()
+				);
+			}
+		}
+		$registrations_to_apply_payment_to                         .= EEH_HTML::tbodyx();
+		$registrations_to_apply_payment_to                         .= EEH_HTML::tablex();
+		$registrations_to_apply_payment_to                         .= EEH_HTML::divx();
+		$registrations_to_apply_payment_to                         .= EEH_HTML::p(
+			esc_html__(
+				'The payment will only be applied to the registrations that have a check mark in their corresponding check box. Checkboxes for free registrations have been disabled.',
+				'event_espresso'
+			),
+			'',
+			'clear description'
+		);
+		$registrations_to_apply_payment_to                         .= EEH_HTML::divx();
+		$this->_template_args['registrations_to_apply_payment_to'] = $registrations_to_apply_payment_to;
+	}
+
+
+	/**
+	 * _get_reg_status_selection
+	 *
+	 * @todo   this will need to be adjusted either once MER comes along OR we move default reg status to tickets
+	 *         instead of events.
+	 * @access protected
+	 * @return void
+	 * @throws EE_Error
+	 */
+	protected function _get_reg_status_selection()
+	{
+		//first get all possible statuses
+		$statuses = EEM_Registration::reg_status_array(array(), true);
+		//let's add a "don't change" option.
+		$status_array['NAN']                                 = esc_html__('Leave the Same', 'event_espresso');
+		$status_array                                        = array_merge($status_array, $statuses);
+		$this->_template_args['status_change_select']        = EEH_Form_Fields::select_input(
+			'txn_reg_status_change[reg_status]',
+			$status_array,
+			'NAN',
+			'id="txn-admin-payment-reg-status-inp"',
+			'txn-reg-status-change-reg-status'
+		);
+		$this->_template_args['delete_status_change_select'] = EEH_Form_Fields::select_input(
+			'delete_txn_reg_status_change[reg_status]',
+			$status_array,
+			'NAN',
+			'delete-txn-admin-payment-reg-status-inp',
+			'delete-txn-reg-status-change-reg-status'
+		);
+	}
+
+
+	/**
+	 *    _get_payment_methods
+	 * Gets all the payment methods available generally, or the ones that are already
+	 * selected on these payments (in case their payment methods are no longer active).
+	 * Has the side-effect of updating the template args' payment_methods item
+	 *
+	 * @access private
+	 * @param EE_Payment[] to show on this page
+	 * @return void
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 * @throws ReflectionException
+	 */
+	private function _get_payment_methods($payments = array())
+	{
+		$payment_methods_of_payments = array();
+		foreach ($payments as $payment) {
+			if ($payment instanceof EE_Payment) {
+				$payment_methods_of_payments[] = $payment->get('PMD_ID');
+			}
+		}
+		if ($payment_methods_of_payments) {
+			$query_args = array(
+				array(
+					'OR*payment_method_for_payment' => array(
+						'PMD_ID'    => array('IN', $payment_methods_of_payments),
+						'PMD_scope' => array('LIKE', '%' . EEM_Payment_Method::scope_admin . '%'),
+					),
+				),
+			);
+		} else {
+			$query_args = array(array('PMD_scope' => array('LIKE', '%' . EEM_Payment_Method::scope_admin . '%')));
+		}
+		$this->_template_args['payment_methods'] = EEM_Payment_Method::instance()->get_all($query_args);
+	}
+
+
+	/**
+	 * txn_attendees_meta_box
+	 *    generates HTML for the Attendees Transaction main meta box
+	 *
+	 * @access public
+	 * @param WP_Post $post
+	 * @param array   $metabox
+	 * @return void
+	 * @throws DomainException
+	 * @throws EE_Error
+	 */
+	public function txn_attendees_meta_box($post, $metabox = array('args' => array()))
+	{
+
+		/** @noinspection NonSecureExtractUsageInspection */
+		extract($metabox['args']);
+		$this->_template_args['post']            = $post;
+		$this->_template_args['event_attendees'] = array();
+		// process items in cart
+		$line_items = $this->_transaction->get_many_related(
+			'Line_Item',
+			array(array('LIN_type' => 'line-item'))
+		);
+		if (! empty($line_items)) {
+			foreach ($line_items as $item) {
+				if ($item instanceof EE_Line_Item) {
+					switch ($item->OBJ_type()) {
+						case 'Event':
+							break;
+						case 'Ticket':
+							$ticket = $item->ticket();
+							//right now we're only handling tickets here.
+							//Cause its expected that only tickets will have attendees right?
+							if (! $ticket instanceof EE_Ticket) {
+								continue;
+							}
+							try {
+								$event_name = $ticket->get_event_name();
+							} catch (Exception $e) {
+								EE_Error::add_error($e->getMessage(), __FILE__, __FUNCTION__, __LINE__);
+								$event_name = esc_html__('Unknown Event', 'event_espresso');
+							}
+							$event_name   .= ' - ' . $item->get('LIN_name');
+							$ticket_price = EEH_Template::format_currency($item->get('LIN_unit_price'));
+							// now get all of the registrations for this transaction that use this ticket
+							$registrations = $ticket->get_many_related(
+								'Registration',
+								array(array('TXN_ID' => $this->_transaction->ID()))
+							);
+							foreach ($registrations as $registration) {
+								if (! $registration instanceof EE_Registration) {
+									continue;
+								}
+								$this->_template_args['event_attendees'][$registration->ID()]['STS_ID']
+									= $registration->status_ID();
+								$this->_template_args['event_attendees'][$registration->ID()]['att_num']
+									= $registration->count();
+								$this->_template_args['event_attendees'][$registration->ID()]['event_ticket_name']
+									= $event_name;
+								$this->_template_args['event_attendees'][$registration->ID()]['ticket_price']
+									= $ticket_price;
+								// attendee info
+								$attendee = $registration->get_first_related('Attendee');
+								if ($attendee instanceof EE_Attendee) {
+									$this->_template_args['event_attendees'][$registration->ID()]['att_id']
+										= $attendee->ID();
+									$this->_template_args['event_attendees'][$registration->ID()]['attendee']
+										= $attendee->full_name();
+									$this->_template_args['event_attendees'][$registration->ID()]['email']
+										= '<a href="mailto:' . $attendee->email() . '?subject=' . $event_name
+										  . esc_html__(
+											  ' Event',
+											  'event_espresso'
+										  )
+										  . '">' . $attendee->email() . '</a>';
+									$this->_template_args['event_attendees'][$registration->ID()]['address']
+										= EEH_Address::format($attendee, 'inline', false, false);
+								} else {
+									$this->_template_args['event_attendees'][$registration->ID()]['att_id']   = '';
+									$this->_template_args['event_attendees'][$registration->ID()]['attendee'] = '';
+									$this->_template_args['event_attendees'][$registration->ID()]['email']    = '';
+									$this->_template_args['event_attendees'][$registration->ID()]['address']  = '';
+								}
+							}
+							break;
+
+					}
+				}
+			}
+
+			$this->_template_args['transaction_form_url'] = add_query_arg(
+				array(
+					'action'  => 'edit_transaction',
+					'process' => 'attendees',
+				),
+				TXN_ADMIN_URL
+			);
+			echo EEH_Template::display_template(
+				TXN_TEMPLATE_PATH . 'txn_admin_details_main_meta_box_attendees.template.php',
+				$this->_template_args,
+				true
+			);
+
+		} else {
+			echo sprintf(
+				esc_html__(
+					'%1$sFor some reason, there are no attendees registered for this transaction. Likely the registration was abandoned in process.%2$s',
+					'event_espresso'
+				),
+				'<p class="important-notice">',
+				'</p>'
+			);
+		}
+	}
+
+
+	/**
+	 * txn_registrant_side_meta_box
+	 * generates HTML for the Edit Transaction side meta box
+	 *
+	 * @access public
+	 * @return void
+	 * @throws DomainException
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 * @throws ReflectionException
+	 */
+	public function txn_registrant_side_meta_box()
+	{
+		$primary_att = $this->_transaction->primary_registration() instanceof EE_Registration
+			? $this->_transaction->primary_registration()->get_first_related('Attendee')
+			: null;
+		if (! $primary_att instanceof EE_Attendee) {
+			$this->_template_args['no_attendee_message'] = esc_html__(
+				'There is no attached contact for this transaction.  The transaction either failed due to an error or was abandoned.',
+				'event_espresso'
+			);
+			$primary_att                                 = EEM_Attendee::instance()->create_default_object();
+		}
+		$this->_template_args['ATT_ID']            = $primary_att->ID();
+		$this->_template_args['prime_reg_fname']   = $primary_att->fname();
+		$this->_template_args['prime_reg_lname']   = $primary_att->lname();
+		$this->_template_args['prime_reg_email']   = $primary_att->email();
+		$this->_template_args['prime_reg_phone']   = $primary_att->phone();
+		$this->_template_args['edit_attendee_url'] = EE_Admin_Page::add_query_args_and_nonce(array(
+			'action' => 'edit_attendee',
+			'post'   => $primary_att->ID(),
+		), REG_ADMIN_URL);
+		// get formatted address for registrant
+		$this->_template_args['formatted_address'] = EEH_Address::format($primary_att);
+		echo EEH_Template::display_template(
+			TXN_TEMPLATE_PATH . 'txn_admin_details_side_meta_box_registrant.template.php',
+			$this->_template_args,
+			true
+		);
+	}
+
+
+	/**
+	 * txn_billing_info_side_meta_box
+	 *    generates HTML for the Edit Transaction side meta box
+	 *
+	 * @access public
+	 * @return void
+	 * @throws DomainException
+	 * @throws EE_Error
+	 */
+	public function txn_billing_info_side_meta_box()
+	{
+
+		$this->_template_args['billing_form']     = $this->_transaction->billing_info();
+		$this->_template_args['billing_form_url'] = add_query_arg(
+			array('action' => 'edit_transaction', 'process' => 'billing'),
+			TXN_ADMIN_URL
+		);
+
+		$template_path = TXN_TEMPLATE_PATH . 'txn_admin_details_side_meta_box_billing_info.template.php';
+		echo EEH_Template::display_template($template_path, $this->_template_args, true);/**/
+	}
+
+
+	/**
+	 * apply_payments_or_refunds
+	 *    registers a payment or refund made towards a transaction
+	 *
+	 * @access public
+	 * @return void
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws ReflectionException
+	 * @throws RuntimeException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 */
+	public function apply_payments_or_refunds()
+	{
+		$json_response_data = array('return_data' => false);
+		$valid_data         = $this->_validate_payment_request_data();
+		$has_access = EE_Registry::instance()->CAP->current_user_can(
+			'ee_edit_payments',
+			'apply_payment_or_refund_from_registration_details'
+		);
+		if (! empty($valid_data) && $has_access) {
+			$PAY_ID = $valid_data['PAY_ID'];
+			//save  the new payment
+			$payment = $this->_create_payment_from_request_data($valid_data);
+			// get the TXN for this payment
+			$transaction = $payment->transaction();
+			// verify transaction
+			if ($transaction instanceof EE_Transaction) {
+				// calculate_total_payments_and_update_status
+				$this->_process_transaction_payments($transaction);
+				$REG_IDs = $this->_get_REG_IDs_to_apply_payment_to($payment);
+				$this->_remove_existing_registration_payments($payment, $PAY_ID);
+				// apply payment to registrations (if applicable)
+				if (! empty($REG_IDs)) {
+					$this->_update_registration_payments($transaction, $payment, $REG_IDs);
+					$this->_maybe_send_notifications();
+					// now process status changes for the same registrations
+					$this->_process_registration_status_change($transaction, $REG_IDs);
+				}
+				$this->_maybe_send_notifications($payment);
+				//prepare to render page
+				$json_response_data['return_data'] = $this->_build_payment_json_response($payment, $REG_IDs);
+				do_action(
+					'AHEE__Transactions_Admin_Page__apply_payments_or_refund__after_recording',
+					$transaction,
+					$payment
+				);
+			} else {
+				EE_Error::add_error(
+					esc_html__(
+						'A valid Transaction for this payment could not be retrieved.',
+						'event_espresso'
+					),
+					__FILE__,
+					__FUNCTION__,
+					__LINE__
+				);
+			}
+		} else {
+			if ($has_access) {
+				EE_Error::add_error(
+					esc_html__(
+						'The payment form data could not be processed. Please try again.',
+						'event_espresso'
+					),
+					__FILE__,
+					__FUNCTION__,
+					__LINE__
+				);
+			} else {
+				EE_Error::add_error(
+					esc_html__(
+						'You do not have access to apply payments or refunds to a registration.',
+						'event_espresso'
+					),
+					__FILE__,
+					__FUNCTION__,
+					__LINE__
+				);
+			}
+		}
+		$notices              = EE_Error::get_notices(
+			false,
+			false,
+			false
+		);
+		$this->_template_args = array(
+			'data'    => $json_response_data,
+			'error'   => $notices['errors'],
+			'success' => $notices['success'],
+		);
+		$this->_return_json();
+	}
+
+
+	/**
+	 * _validate_payment_request_data
+	 *
+	 * @return array
+	 * @throws EE_Error
+	 */
+	protected function _validate_payment_request_data()
+	{
+		if (! isset($this->_req_data['txn_admin_payment'])) {
+			return false;
+		}
+		$payment_form = $this->_generate_payment_form_section();
+		try {
+			if ($payment_form->was_submitted()) {
+				$payment_form->receive_form_submission();
+				if (! $payment_form->is_valid()) {
+					$submission_error_messages = array();
+					foreach ($payment_form->get_validation_errors_accumulated() as $validation_error) {
+						if ($validation_error instanceof EE_Validation_Error) {
+							$submission_error_messages[] = sprintf(
+								_x('%s : %s', 'Form Section Name : Form Validation Error', 'event_espresso'),
+								$validation_error->get_form_section()->html_label_text(),
+								$validation_error->getMessage()
+							);
+						}
+					}
+					EE_Error::add_error(
+						implode('<br />', $submission_error_messages),
+						__FILE__,
+						__FUNCTION__,
+						__LINE__
+					);
+
+					return array();
+				}
+			}
+		} catch (EE_Error $e) {
+			EE_Error::add_error($e->getMessage(), __FILE__, __FUNCTION__, __LINE__);
+
+			return array();
+		}
+
+		return $payment_form->valid_data();
+	}
+
+
+	/**
+	 * _generate_payment_form_section
+	 *
+	 * @return EE_Form_Section_Proper
+	 * @throws EE_Error
+	 */
+	protected function _generate_payment_form_section()
+	{
+		return new EE_Form_Section_Proper(
+			array(
+				'name'        => 'txn_admin_payment',
+				'subsections' => array(
+					'PAY_ID'          => new EE_Text_Input(
+						array(
+							'default'               => 0,
+							'required'              => false,
+							'html_label_text'       => esc_html__('Payment ID', 'event_espresso'),
+							'validation_strategies' => array(new EE_Int_Normalization()),
+						)
+					),
+					'TXN_ID'          => new EE_Text_Input(
+						array(
+							'default'               => 0,
+							'required'              => true,
+							'html_label_text'       => esc_html__('Transaction ID', 'event_espresso'),
+							'validation_strategies' => array(new EE_Int_Normalization()),
+						)
+					),
+					'type'            => new EE_Text_Input(
+						array(
+							'default'               => 1,
+							'required'              => true,
+							'html_label_text'       => esc_html__('Payment or Refund', 'event_espresso'),
+							'validation_strategies' => array(new EE_Int_Normalization()),
+						)
+					),
+					'amount'          => new EE_Text_Input(
+						array(
+							'default'               => 0,
+							'required'              => true,
+							'html_label_text'       => esc_html__('Payment amount', 'event_espresso'),
+							'validation_strategies' => array(new EE_Float_Normalization()),
+						)
+					),
+					'status'          => new EE_Text_Input(
+						array(
+							'default'         => EEM_Payment::status_id_approved,
+							'required'        => true,
+							'html_label_text' => esc_html__('Payment status', 'event_espresso'),
+						)
+					),
+					'PMD_ID'          => new EE_Text_Input(
+						array(
+							'default'               => 2,
+							'required'              => true,
+							'html_label_text'       => esc_html__('Payment Method', 'event_espresso'),
+							'validation_strategies' => array(new EE_Int_Normalization()),
+						)
+					),
+					'date'            => new EE_Text_Input(
+						array(
+							'default'         => time(),
+							'required'        => true,
+							'html_label_text' => esc_html__('Payment date', 'event_espresso'),
+						)
+					),
+					'txn_id_chq_nmbr' => new EE_Text_Input(
+						array(
+							'default'               => '',
+							'required'              => false,
+							'html_label_text'       => esc_html__('Transaction or Cheque Number', 'event_espresso'),
+							'validation_strategies' => array(
+								new EE_Max_Length_Validation_Strategy(
+									esc_html__('Input too long', 'event_espresso'),
+									100
+								),
+							),
+						)
+					),
+					'po_number'       => new EE_Text_Input(
+						array(
+							'default'               => '',
+							'required'              => false,
+							'html_label_text'       => esc_html__('Purchase Order Number', 'event_espresso'),
+							'validation_strategies' => array(
+								new EE_Max_Length_Validation_Strategy(
+									esc_html__('Input too long', 'event_espresso'),
+									100
+								),
+							),
+						)
+					),
+					'accounting'      => new EE_Text_Input(
+						array(
+							'default'               => '',
+							'required'              => false,
+							'html_label_text'       => esc_html__('Extra Field for Accounting', 'event_espresso'),
+							'validation_strategies' => array(
+								new EE_Max_Length_Validation_Strategy(
+									esc_html__('Input too long', 'event_espresso'),
+									100
+								),
+							),
+						)
+					),
+				),
+			)
+		);
+	}
+
+
+	/**
+	 * _create_payment_from_request_data
+	 *
+	 * @param array $valid_data
+	 * @return EE_Payment
+	 * @throws EE_Error
+	 */
+	protected function _create_payment_from_request_data($valid_data)
+	{
+		$PAY_ID = $valid_data['PAY_ID'];
+		// get payment amount
+		$amount = $valid_data['amount'] ? abs($valid_data['amount']) : 0;
+		// payments have a type value of 1 and refunds have a type value of -1
+		// so multiplying amount by type will give a positive value for payments, and negative values for refunds
+		$amount = $valid_data['type'] < 0 ? $amount * -1 : $amount;
+		// for some reason the date string coming in has extra spaces between the date and time.  This fixes that.
+		$date    = $valid_data['date']
+			? preg_replace('/\s+/', ' ', $valid_data['date'])
+			: date('Y-m-d g:i a', current_time('timestamp'));
+		$payment = EE_Payment::new_instance(
+			array(
+				'TXN_ID'              => $valid_data['TXN_ID'],
+				'STS_ID'              => $valid_data['status'],
+				'PAY_timestamp'       => $date,
+				'PAY_source'          => EEM_Payment_Method::scope_admin,
+				'PMD_ID'              => $valid_data['PMD_ID'],
+				'PAY_amount'          => $amount,
+				'PAY_txn_id_chq_nmbr' => $valid_data['txn_id_chq_nmbr'],
+				'PAY_po_number'       => $valid_data['po_number'],
+				'PAY_extra_accntng'   => $valid_data['accounting'],
+				'PAY_details'         => $valid_data,
+				'PAY_ID'              => $PAY_ID,
+			),
+			'',
+			array('Y-m-d', 'g:i a')
+		);
+
+		if (! $payment->save()) {
+			EE_Error::add_error(
+				sprintf(
+					esc_html__('Payment %1$d has not been successfully saved to the database.', 'event_espresso'),
+					$payment->ID()
+				),
+				__FILE__, __FUNCTION__, __LINE__
+			);
+		}
+
+		return $payment;
+	}
+
+
+	/**
+	 * _process_transaction_payments
+	 *
+	 * @param \EE_Transaction $transaction
+	 * @return void
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws ReflectionException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 */
+	protected function _process_transaction_payments(EE_Transaction $transaction)
+	{
+		/** @type EE_Transaction_Payments $transaction_payments */
+		$transaction_payments = EE_Registry::instance()->load_class('Transaction_Payments');
+		//update the transaction with this payment
+		if ($transaction_payments->calculate_total_payments_and_update_status($transaction)) {
+			EE_Error::add_success(esc_html__(
+				'The payment has been processed successfully.', 'event_espresso'),
+				__FILE__,
+				__FUNCTION__,
+				__LINE__
+			);
+		} else {
+			EE_Error::add_error(
+				esc_html__(
+					'The payment was processed successfully but the amount paid for the transaction was not updated.',
+					'event_espresso'
+				)
+				,
+				__FILE__,
+				__FUNCTION__,
+				__LINE__
+			);
+		}
+	}
+
+
+	/**
+	 * _get_REG_IDs_to_apply_payment_to
+	 * returns a list of registration IDs that the payment will apply to
+	 *
+	 * @param \EE_Payment $payment
+	 * @return array
+	 * @throws EE_Error
+	 */
+	protected function _get_REG_IDs_to_apply_payment_to(EE_Payment $payment)
+	{
+		$REG_IDs = array();
+		// grab array of IDs for specific registrations to apply changes to
+		if (isset($this->_req_data['txn_admin_payment']['registrations'])) {
+			$REG_IDs = (array)$this->_req_data['txn_admin_payment']['registrations'];
+		}
+		//nothing specified ? then get all reg IDs
+		if (empty($REG_IDs)) {
+			$registrations = $payment->transaction()->registrations();
+			$REG_IDs       = ! empty($registrations)
+				? array_keys($registrations)
+				: $this->_get_existing_reg_payment_REG_IDs($payment);
+		}
+
+		// ensure that REG_IDs are integers and NOT strings
+		return array_map('intval', $REG_IDs);
+	}
+
+
+	/**
+	 * @return array
+	 */
+	public function existing_reg_payment_REG_IDs()
+	{
+		return $this->_existing_reg_payment_REG_IDs;
+	}
+
+
+	/**
+	 * @param array $existing_reg_payment_REG_IDs
+	 */
+	public function set_existing_reg_payment_REG_IDs($existing_reg_payment_REG_IDs = null)
+	{
+		$this->_existing_reg_payment_REG_IDs = $existing_reg_payment_REG_IDs;
+	}
+
+
+	/**
+	 * _get_existing_reg_payment_REG_IDs
+	 * returns a list of registration IDs that the payment is currently related to
+	 * as recorded in the database
+	 *
+	 * @param \EE_Payment $payment
+	 * @return array
+	 * @throws EE_Error
+	 */
+	protected function _get_existing_reg_payment_REG_IDs(EE_Payment $payment)
+	{
+		if ($this->existing_reg_payment_REG_IDs() === null) {
+			// let's get any existing reg payment records for this payment
+			$existing_reg_payment_REG_IDs = $payment->get_many_related('Registration');
+			// but we only want the REG IDs, so grab the array keys
+			$existing_reg_payment_REG_IDs = ! empty($existing_reg_payment_REG_IDs)
+				? array_keys($existing_reg_payment_REG_IDs)
+				: array();
+			$this->set_existing_reg_payment_REG_IDs($existing_reg_payment_REG_IDs);
+		}
+
+		return $this->existing_reg_payment_REG_IDs();
+	}
+
+
+	/**
+	 * _remove_existing_registration_payments
+	 * this calculates the difference between existing relations
+	 * to the supplied payment and the new list registration IDs,
+	 * removes any related registrations that no longer apply,
+	 * and then updates the registration paid fields
+	 *
+	 * @param \EE_Payment $payment
+	 * @param int         $PAY_ID
+	 * @return bool;
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws ReflectionException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 */
+	protected function _remove_existing_registration_payments(EE_Payment $payment, $PAY_ID = 0)
+	{
+		// newly created payments will have nothing recorded for $PAY_ID
+		if ($PAY_ID == 0) {
+			return false;
+		}
+		$existing_reg_payment_REG_IDs = $this->_get_existing_reg_payment_REG_IDs($payment);
+		if (empty($existing_reg_payment_REG_IDs)) {
+			return false;
+		}
+		/** @type EE_Transaction_Payments $transaction_payments */
+		$transaction_payments = EE_Registry::instance()->load_class('Transaction_Payments');
+
+		return $transaction_payments->delete_registration_payments_and_update_registrations(
+			$payment,
+			array(
+				array(
+					'PAY_ID' => $payment->ID(),
+					'REG_ID' => array('IN', $existing_reg_payment_REG_IDs),
+				),
+			)
+		);
+	}
+
+
+	/**
+	 * _update_registration_payments
+	 * this applies the payments to the selected registrations
+	 * but only if they have not already been paid for
+	 *
+	 * @param  EE_Transaction $transaction
+	 * @param \EE_Payment     $payment
+	 * @param array           $REG_IDs
+	 * @return void
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws ReflectionException
+	 * @throws RuntimeException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 */
+	protected function _update_registration_payments(
+		EE_Transaction $transaction,
+		EE_Payment $payment,
+		$REG_IDs = array()
+	) {
+		// we can pass our own custom set of registrations to EE_Payment_Processor::process_registration_payments()
+		// so let's do that using our set of REG_IDs from the form
+		$registration_query_where_params = array(
+			'REG_ID' => array('IN', $REG_IDs),
+		);
+		// but add in some conditions regarding payment,
+		// so that we don't apply payments to registrations that are free or have already been paid for
+		// but ONLY if the payment is NOT a refund ( ie: the payment amount is not negative )
+		if (! $payment->is_a_refund()) {
+			$registration_query_where_params['REG_final_price']  = array('!=', 0);
+			$registration_query_where_params['REG_final_price*'] = array('!=', 'REG_paid', true);
+		}
+		$registrations = $transaction->registrations(array($registration_query_where_params));
+		if (! empty($registrations)) {
+			/** @type EE_Payment_Processor $payment_processor */
+			$payment_processor = EE_Registry::instance()->load_core('Payment_Processor');
+			$payment_processor->process_registration_payments($transaction, $payment, $registrations);
+		}
+	}
+
+
+	/**
+	 * _process_registration_status_change
+	 * This processes requested registration status changes for all the registrations
+	 * on a given transaction and (optionally) sends out notifications for the changes.
+	 *
+	 * @param  EE_Transaction $transaction
+	 * @param array           $REG_IDs
+	 * @return bool
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws ReflectionException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 */
+	protected function _process_registration_status_change(EE_Transaction $transaction, $REG_IDs = array())
+	{
+		// first if there is no change in status then we get out.
+		if (
+			! isset($this->_req_data['txn_reg_status_change']['reg_status'])
+			|| $this->_req_data['txn_reg_status_change']['reg_status'] === 'NAN'
+		) {
+			//no error message, no change requested, just nothing to do man.
+			return false;
+		}
+		/** @type EE_Transaction_Processor $transaction_processor */
+		$transaction_processor = EE_Registry::instance()->load_class('Transaction_Processor');
+
+		// made it here dude?  Oh WOW.  K, let's take care of changing the statuses
+		return $transaction_processor->manually_update_registration_statuses(
+			$transaction,
+			sanitize_text_field($this->_req_data['txn_reg_status_change']['reg_status']),
+			array(array('REG_ID' => array('IN', $REG_IDs)))
+		);
+	}
+
+
+	/**
+	 * _build_payment_json_response
+	 *
+	 * @access public
+	 * @param \EE_Payment $payment
+	 * @param array       $REG_IDs
+	 * @param bool | null $delete_txn_reg_status_change
+	 * @return array
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 * @throws ReflectionException
+	 */
+	protected function _build_payment_json_response(
+		EE_Payment $payment,
+		$REG_IDs = array(),
+		$delete_txn_reg_status_change = null
+	) {
+		// was the payment deleted ?
+		if (is_bool($delete_txn_reg_status_change)) {
+			return array(
+				'PAY_ID'                       => $payment->ID(),
+				'amount'                       => $payment->amount(),
+				'total_paid'                   => $payment->transaction()->paid(),
+				'txn_status'                   => $payment->transaction()->status_ID(),
+				'pay_status'                   => $payment->STS_ID(),
+				'registrations'                => $this->_registration_payment_data_array($REG_IDs),
+				'delete_txn_reg_status_change' => $delete_txn_reg_status_change,
+			);
+		} else {
+			$this->_get_payment_status_array();
+
+			return array(
+				'amount'           => $payment->amount(),
+				'total_paid'       => $payment->transaction()->paid(),
+				'txn_status'       => $payment->transaction()->status_ID(),
+				'pay_status'       => $payment->STS_ID(),
+				'PAY_ID'           => $payment->ID(),
+				'STS_ID'           => $payment->STS_ID(),
+				'status'           => self::$_pay_status[$payment->STS_ID()],
+				'date'             => $payment->timestamp('Y-m-d', 'h:i a'),
+				'method'           => strtoupper($payment->source()),
+				'PM_ID'            => $payment->payment_method() ? $payment->payment_method()->ID() : 1,
+				'gateway'          => $payment->payment_method()
+					? $payment->payment_method()->admin_name()
+					: esc_html__("Unknown", 'event_espresso'),
+				'gateway_response' => $payment->gateway_response(),
+				'txn_id_chq_nmbr'  => $payment->txn_id_chq_nmbr(),
+				'po_number'        => $payment->po_number(),
+				'extra_accntng'    => $payment->extra_accntng(),
+				'registrations'    => $this->_registration_payment_data_array($REG_IDs),
+			);
+		}
+	}
+
+
+	/**
+	 * delete_payment
+	 *    delete a payment or refund made towards a transaction
+	 *
+	 * @access public
+	 * @return void
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws ReflectionException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 */
+	public function delete_payment()
+	{
+		$json_response_data = array('return_data' => false);
+		$PAY_ID             = isset($this->_req_data['delete_txn_admin_payment']['PAY_ID'])
+			? absint($this->_req_data['delete_txn_admin_payment']['PAY_ID'])
+			: 0;
+		$can_delete = EE_Registry::instance()->CAP->current_user_can(
+			'ee_delete_payments',
+			'delete_payment_from_registration_details'
+		);
+		if ($PAY_ID && $can_delete) {
+			$delete_txn_reg_status_change = isset($this->_req_data['delete_txn_reg_status_change'])
+				? $this->_req_data['delete_txn_reg_status_change']
+				: false;
+			$payment                      = EEM_Payment::instance()->get_one_by_ID($PAY_ID);
+			if ($payment instanceof EE_Payment) {
+				$REG_IDs = $this->_get_existing_reg_payment_REG_IDs($payment);
+				/** @type EE_Transaction_Payments $transaction_payments */
+				$transaction_payments = EE_Registry::instance()->load_class('Transaction_Payments');
+				if ($transaction_payments->delete_payment_and_update_transaction($payment)) {
+					$json_response_data['return_data'] = $this->_build_payment_json_response(
+						$payment,
+						$REG_IDs,
+						$delete_txn_reg_status_change
+					);
+					if ($delete_txn_reg_status_change) {
+						$this->_req_data['txn_reg_status_change'] = $delete_txn_reg_status_change;
+						//MAKE sure we also add the delete_txn_req_status_change to the
+						//$_REQUEST global because that's how messages will be looking for it.
+						$_REQUEST['txn_reg_status_change'] = $delete_txn_reg_status_change;
+						$this->_maybe_send_notifications();
+						$this->_process_registration_status_change($payment->transaction(), $REG_IDs);
+					}
+				}
+			} else {
+				EE_Error::add_error(
+					esc_html__('Valid Payment data could not be retrieved from the database.', 'event_espresso'),
+					__FILE__, __FUNCTION__, __LINE__
+				);
+			}
+		} else {
+			if ($can_delete) {
+				EE_Error::add_error(
+					esc_html__(
+						'A valid Payment ID was not received, therefore payment form data could not be loaded.',
+						'event_espresso'
+					),
+					__FILE__, __FUNCTION__, __LINE__
+				);
+			} else {
+				EE_Error::add_error(
+					esc_html__(
+						'You do not have access to delete a payment.',
+						'event_espresso'
+					),
+					__FILE__,
+					__FUNCTION__,
+					__LINE__
+				);
+			}
+		}
+		$notices              = EE_Error::get_notices(false, false, false);
+		$this->_template_args = array(
+			'data'      => $json_response_data,
+			'success'   => $notices['success'],
+			'error'     => $notices['errors'],
+			'attention' => $notices['attention'],
+		);
+		$this->_return_json();
+	}
+
+
+	/**
+	 * _registration_payment_data_array
+	 * adds info for 'owing' and 'paid' for each registration to the json response
+	 *
+	 * @access protected
+	 * @param array $REG_IDs
+	 * @return array
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 * @throws ReflectionException
+	 */
+	protected function _registration_payment_data_array($REG_IDs)
+	{
+		$registration_payment_data = array();
+		//if non empty reg_ids lets get an array of registrations and update the values for the apply_payment/refund rows.
+		if (! empty($REG_IDs)) {
+			$registrations = EEM_Registration::instance()->get_all(array(array('REG_ID' => array('IN', $REG_IDs))));
+			foreach ($registrations as $registration) {
+				if ($registration instanceof EE_Registration) {
+					$registration_payment_data[$registration->ID()] = array(
+						'paid'  => $registration->pretty_paid(),
+						'owing' => EEH_Template::format_currency($registration->final_price() - $registration->paid()),
+					);
+				}
+			}
+		}
+
+		return $registration_payment_data;
+	}
+
+
+	/**
+	 * _maybe_send_notifications
+	 * determines whether or not the admin has indicated that notifications should be sent.
+	 * If so, will toggle a filter switch for delivering registration notices.
+	 * If passed an EE_Payment object, then it will trigger payment notifications instead.
+	 *
+	 * @access protected
+	 * @param \EE_Payment | null $payment
+	 */
+	protected function _maybe_send_notifications($payment = null)
+	{
+		switch ($payment instanceof EE_Payment) {
+			// payment notifications
+			case true :
+				if (
+					isset(
+						$this->_req_data['txn_payments'],
+						$this->_req_data['txn_payments']['send_notifications']
+					) &&
+					filter_var($this->_req_data['txn_payments']['send_notifications'], FILTER_VALIDATE_BOOLEAN)
+				) {
+					$this->_process_payment_notification($payment);
+				}
+				break;
+			// registration notifications
+			case false :
+				if (
+					isset(
+						$this->_req_data['txn_reg_status_change'],
+						$this->_req_data['txn_reg_status_change']['send_notifications']
+					) &&
+					filter_var($this->_req_data['txn_reg_status_change']['send_notifications'], FILTER_VALIDATE_BOOLEAN)
+				) {
+					add_filter('FHEE__EED_Messages___maybe_registration__deliver_notifications', '__return_true');
+				}
+				break;
+		}
+	}
+
+
+	/**
+	 * _send_payment_reminder
+	 *    generates HTML for the View Transaction Details Admin page
+	 *
+	 * @access protected
+	 * @return void
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 */
+	protected function _send_payment_reminder()
+	{
+		$TXN_ID      = ! empty($this->_req_data['TXN_ID']) ? absint($this->_req_data['TXN_ID']) : false;
+		$transaction = EEM_Transaction::instance()->get_one_by_ID($TXN_ID);
+		$query_args  = isset($this->_req_data['redirect_to']) ? array(
+			'action' => $this->_req_data['redirect_to'],
+			'TXN_ID' => $this->_req_data['TXN_ID'],
+		) : array();
+		do_action(
+			'AHEE__Transactions_Admin_Page___send_payment_reminder__process_admin_payment_reminder',
+			$transaction
+		);
+		$this->_redirect_after_action(
+			false,
+			esc_html__('payment reminder', 'event_espresso'),
+			esc_html__('sent', 'event_espresso'),
+			$query_args,
+			true
+		);
+	}
+
+
+	/**
+	 *  get_transactions
+	 *    get transactions for given parameters (used by list table)
+	 *
+	 * @param  int     $perpage how many transactions displayed per page
+	 * @param  boolean $count   return the count or objects
+	 * @param string   $view
+	 * @return mixed int = count || array of transaction objects
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 */
+	public function get_transactions($perpage, $count = false, $view = '')
+	{
+
+		$TXN = EEM_Transaction::instance();
+
+		$start_date = isset($this->_req_data['txn-filter-start-date'])
+			? wp_strip_all_tags($this->_req_data['txn-filter-start-date'])
+			: date(
+				'm/d/Y',
+				strtotime('-10 year')
+			);
+		$end_date   = isset($this->_req_data['txn-filter-end-date'])
+			? wp_strip_all_tags($this->_req_data['txn-filter-end-date'])
+			: date('m/d/Y');
+
+		//make sure our timestamps start and end right at the boundaries for each day
+		$start_date = date('Y-m-d', strtotime($start_date)) . ' 00:00:00';
+		$end_date   = date('Y-m-d', strtotime($end_date)) . ' 23:59:59';
+
+
+		//convert to timestamps
+		$start_date = strtotime($start_date);
+		$end_date   = strtotime($end_date);
+
+		//makes sure start date is the lowest value and vice versa
+		$start_date = min($start_date, $end_date);
+		$end_date   = max($start_date, $end_date);
+
+		//convert to correct format for query
+		$start_date = EEM_Transaction::instance()->convert_datetime_for_query(
+			'TXN_timestamp',
+			date('Y-m-d H:i:s', $start_date),
+			'Y-m-d H:i:s'
+		);
+		$end_date   = EEM_Transaction::instance()->convert_datetime_for_query(
+			'TXN_timestamp',
+			date('Y-m-d H:i:s', $end_date),
+			'Y-m-d H:i:s'
+		);
+
+
+		//set orderby
+		$this->_req_data['orderby'] = ! empty($this->_req_data['orderby']) ? $this->_req_data['orderby'] : '';
+
+		switch ($this->_req_data['orderby']) {
+			case 'TXN_ID':
+				$orderby = 'TXN_ID';
+				break;
+			case 'ATT_fname':
+				$orderby = 'Registration.Attendee.ATT_fname';
+				break;
+			case 'event_name':
+				$orderby = 'Registration.Event.EVT_name';
+				break;
+			default: //'TXN_timestamp'
+				$orderby = 'TXN_timestamp';
+		}
+
+		$sort         = ! empty($this->_req_data['order']) ? $this->_req_data['order'] : 'DESC';
+		$current_page = ! empty($this->_req_data['paged']) ? $this->_req_data['paged'] : 1;
+		$per_page     = ! empty($perpage) ? $perpage : 10;
+		$per_page     = ! empty($this->_req_data['perpage']) ? $this->_req_data['perpage'] : $per_page;
+
+		$offset = ($current_page - 1) * $per_page;
+		$limit  = array($offset, $per_page);
+
+		$_where = array(
+			'TXN_timestamp'          => array('BETWEEN', array($start_date, $end_date)),
+			'Registration.REG_count' => 1,
+		);
+
+		if (isset($this->_req_data['EVT_ID'])) {
+			$_where['Registration.EVT_ID'] = $this->_req_data['EVT_ID'];
+		}
+
+		if (isset($this->_req_data['s'])) {
+			$search_string = '%' . $this->_req_data['s'] . '%';
+			$_where['OR']  = array(
+				'Registration.Event.EVT_name'         => array('LIKE', $search_string),
+				'Registration.Event.EVT_desc'         => array('LIKE', $search_string),
+				'Registration.Event.EVT_short_desc'   => array('LIKE', $search_string),
+				'Registration.Attendee.ATT_full_name' => array('LIKE', $search_string),
+				'Registration.Attendee.ATT_fname'     => array('LIKE', $search_string),
+				'Registration.Attendee.ATT_lname'     => array('LIKE', $search_string),
+				'Registration.Attendee.ATT_short_bio' => array('LIKE', $search_string),
+				'Registration.Attendee.ATT_email'     => array('LIKE', $search_string),
+				'Registration.Attendee.ATT_address'   => array('LIKE', $search_string),
+				'Registration.Attendee.ATT_address2'  => array('LIKE', $search_string),
+				'Registration.Attendee.ATT_city'      => array('LIKE', $search_string),
+				'Registration.REG_final_price'        => array('LIKE', $search_string),
+				'Registration.REG_code'               => array('LIKE', $search_string),
+				'Registration.REG_count'              => array('LIKE', $search_string),
+				'Registration.REG_group_size'         => array('LIKE', $search_string),
+				'Registration.Ticket.TKT_name'        => array('LIKE', $search_string),
+				'Registration.Ticket.TKT_description' => array('LIKE', $search_string),
+				'Payment.PAY_source'                  => array('LIKE', $search_string),
+				'Payment.Payment_Method.PMD_name'     => array('LIKE', $search_string),
+				'TXN_session_data'                    => array('LIKE', $search_string),
+				'Payment.PAY_txn_id_chq_nmbr'         => array('LIKE', $search_string),
+			);
+		}
+
+		//failed transactions
+		$failed    = (! empty($this->_req_data['status']) && $this->_req_data['status'] === 'failed' && ! $count)
+					 || ($count && $view === 'failed');
+		$abandoned = (! empty($this->_req_data['status']) && $this->_req_data['status'] === 'abandoned' && ! $count)
+					 || ($count && $view === 'abandoned');
+
+		if ($failed) {
+			$_where['STS_ID'] = EEM_Transaction::failed_status_code;
+		} else if ($abandoned) {
+			$_where['STS_ID'] = EEM_Transaction::abandoned_status_code;
+		} else {
+			$_where['STS_ID']  = array('!=', EEM_Transaction::failed_status_code);
+			$_where['STS_ID*'] = array('!=', EEM_Transaction::abandoned_status_code);
+		}
+
+		$query_params = array(
+			$_where,
+			'order_by'                 => array($orderby => $sort),
+			'limit'                    => $limit,
+			'default_where_conditions' => EEM_Base::default_where_conditions_this_only,
+		);
+
+		$transactions = $count
+			? $TXN->count(array($_where), 'TXN_ID', true)
+			: $TXN->get_all($query_params);
+
+		return $transactions;
+	}
 }

Spacing +81 added lines, -81 removed lines

@@ -266,7 +266,7 @@ 
             'An error occurred! Your request may have been processed, but a valid response from the server was not received. Please refresh the page and try again.',
             'event_espresso'
         );
-        EE_Registry::$i18n_js_strings['error_occurred']          = esc_html__(
+        EE_Registry::$i18n_js_strings['error_occurred'] = esc_html__(
             'An error occurred! Please refresh the page and try again.',
             'event_espresso'
         );
@@ -364,13 +364,13 @@ 
         //enqueue style
         wp_register_style(
             'espresso_txn',
-            TXN_ASSETS_URL . 'espresso_transactions_admin.css',
+            TXN_ASSETS_URL.'espresso_transactions_admin.css',
             array(),
             EVENT_ESPRESSO_VERSION
         );
         wp_enqueue_style('espresso_txn');
         //scripts
-        wp_register_script('espresso_txn', TXN_ASSETS_URL . 'espresso_transactions_admin.js', array(
+        wp_register_script('espresso_txn', TXN_ASSETS_URL.'espresso_transactions_admin.js', array(
             'ee_admin_js',
             'ee-datepicker',
             'jquery-ui-datepicker',
@@ -467,7 +467,7 @@ 
             : null;
         $this->_transaction->verify_abandoned_transaction_status();
 
-        if (! $this->_transaction instanceof EE_Transaction) {
+        if ( ! $this->_transaction instanceof EE_Transaction) {
             $error_msg = sprintf(
                 esc_html__(
                     'An error occurred and the details for the transaction with the ID # %d could not be retrieved.',
@@ -565,7 +565,7 @@ 
             'FHEE__Transactions_Admin_Page___transaction_legend_items__more_items',
             array(
                 'overpaid'   => array(
-                    'class' => 'ee-status-legend ee-status-legend-' . EEM_Transaction::overpaid_status_code,
+                    'class' => 'ee-status-legend ee-status-legend-'.EEM_Transaction::overpaid_status_code,
                     'desc'  => EEH_Template::pretty_status(
                         EEM_Transaction::overpaid_status_code,
                         false,
@@ -573,7 +573,7 @@ 
                     ),
                 ),
                 'complete'   => array(
-                    'class' => 'ee-status-legend ee-status-legend-' . EEM_Transaction::complete_status_code,
+                    'class' => 'ee-status-legend ee-status-legend-'.EEM_Transaction::complete_status_code,
                     'desc'  => EEH_Template::pretty_status(
                         EEM_Transaction::complete_status_code,
                         false,
@@ -581,7 +581,7 @@ 
                     ),
                 ),
                 'incomplete' => array(
-                    'class' => 'ee-status-legend ee-status-legend-' . EEM_Transaction::incomplete_status_code,
+                    'class' => 'ee-status-legend ee-status-legend-'.EEM_Transaction::incomplete_status_code,
                     'desc'  => EEH_Template::pretty_status(
                         EEM_Transaction::incomplete_status_code,
                         false,
@@ -589,7 +589,7 @@ 
                     ),
                 ),
                 'abandoned'  => array(
-                    'class' => 'ee-status-legend ee-status-legend-' . EEM_Transaction::abandoned_status_code,
+                    'class' => 'ee-status-legend ee-status-legend-'.EEM_Transaction::abandoned_status_code,
                     'desc'  => EEH_Template::pretty_status(
                         EEM_Transaction::abandoned_status_code,
                         false,
@@ -597,7 +597,7 @@ 
                     ),
                 ),
                 'failed'     => array(
-                    'class' => 'ee-status-legend ee-status-legend-' . EEM_Transaction::failed_status_code,
+                    'class' => 'ee-status-legend ee-status-legend-'.EEM_Transaction::failed_status_code,
                     'desc'  => EEH_Template::pretty_status(
                         EEM_Transaction::failed_status_code,
                         false,
@@ -646,11 +646,11 @@ 
                     'Click to Edit event',
                     'event_espresso'
                 )
-                . '">' . $event->get('EVT_name') . '</a>',
+                . '">'.$event->get('EVT_name').'</a>',
                 '</h3>'
             )
             : '';
-        $this->_template_args['after_list_table']  = $this->_display_legend($this->_transaction_legend_items());
+        $this->_template_args['after_list_table'] = $this->_display_legend($this->_transaction_legend_items());
         $this->display_admin_list_table_page_with_no_sidebar();
     }
 
@@ -693,7 +693,7 @@ 
 
         $this->_template_args['txn_status']['value'] = self::$_txn_status[$this->_transaction->get('STS_ID')];
         $this->_template_args['txn_status']['label'] = esc_html__('Transaction Status', 'event_espresso');
-        $this->_template_args['txn_status']['class'] = 'status-' . $this->_transaction->get('STS_ID');
+        $this->_template_args['txn_status']['class'] = 'status-'.$this->_transaction->get('STS_ID');
 
         $this->_template_args['grand_total'] = $this->_transaction->get('TXN_total');
         $this->_template_args['total_paid']  = $this->_transaction->get('TXN_paid');
@@ -746,7 +746,7 @@ 
 
 
         // next link
-        $next_txn                                 = $this->_transaction->next(
+        $next_txn = $this->_transaction->next(
             null,
             array(array('STS_ID' => array('!=', EEM_Transaction::failed_status_code))),
             'TXN_ID'
@@ -761,7 +761,7 @@ 
             )
             : '';
         // previous link
-        $previous_txn                                 = $this->_transaction->previous(
+        $previous_txn = $this->_transaction->previous(
             null,
             array(array('STS_ID' => array('!=', EEM_Transaction::failed_status_code))),
             'TXN_ID'
@@ -811,7 +811,7 @@ 
         // grab messages at the last second
         $this->_template_args['notices'] = EE_Error::get_notices();
         // path to template
-        $template_path                             = TXN_TEMPLATE_PATH . 'txn_admin_details_header.template.php';
+        $template_path                             = TXN_TEMPLATE_PATH.'txn_admin_details_header.template.php';
         $this->_template_args['admin_page_header'] = EEH_Template::display_template(
             $template_path,
             $this->_template_args,
@@ -893,7 +893,7 @@ 
     {
         $content = '';
         $actions = array();
-        if (! $transaction instanceof EE_Transaction) {
+        if ( ! $transaction instanceof EE_Transaction) {
             return $content;
         }
         /** @var EE_Registration $primary_registration */
@@ -954,7 +954,7 @@ 
         );
         if ($actions) {
             $content = '<ul>';
-            $content .= '<li>' . implode('</li><li>', $actions) . '</li>';
+            $content .= '<li>'.implode('</li><li>', $actions).'</li>';
             $content .= '</uL>';
         }
         return $content;
@@ -992,7 +992,7 @@ 
 
         //get line table
         EEH_Autoloader::register_line_item_display_autoloaders();
-        $Line_Item_Display                       = new EE_Line_Item_Display(
+        $Line_Item_Display = new EE_Line_Item_Display(
             'admin_table',
             'EE_Admin_Table_Line_Item_Display_Strategy'
         );
@@ -1003,13 +1003,13 @@ 
                                                                       ->get('REG_code');
 
         // process taxes
-        $taxes                         = $this->_transaction->get_many_related(
+        $taxes = $this->_transaction->get_many_related(
             'Line_Item',
             array(array('LIN_type' => EEM_Line_Item::type_tax))
         );
         $this->_template_args['taxes'] = ! empty($taxes) ? $taxes : false;
 
-        $this->_template_args['grand_total']     = EEH_Template::format_currency(
+        $this->_template_args['grand_total'] = EEH_Template::format_currency(
             $this->_transaction->get('TXN_total'),
             false,
             false
@@ -1019,7 +1019,7 @@ 
 
         // process payment details
         $payments = $this->_transaction->get_many_related('Payment');
-        if (! empty($payments)) {
+        if ( ! empty($payments)) {
             $this->_template_args['payments']              = $payments;
             $this->_template_args['existing_reg_payments'] = $this->_get_registration_payment_IDs($payments);
         } else {
@@ -1080,7 +1080,7 @@ 
                                   esc_html__('%1$s : Initiated %2$s', 'event_espresso'),
                                   ucwords(str_replace('_', ' ', $reg_step)),
                                   date(
-                                      get_option('date_format') . ' ' . get_option('time_format'),
+                                      get_option('date_format').' '.get_option('time_format'),
                                       ($reg_step_status + (get_option('gmt_offset') * HOUR_IN_SECONDS))
                                   )
                               )
@@ -1094,7 +1094,7 @@ 
                               . '</li>';
             }
         }
-        $reg_steps                                                 .= '</ul>';
+        $reg_steps .= '</ul>';
         $this->_template_args['txn_details']['reg_steps']['value'] = $reg_steps;
         $this->_template_args['txn_details']['reg_steps']['label'] = esc_html__(
             'Registration Step Progress',
@@ -1107,11 +1107,11 @@ 
         $this->_get_payment_status_array();
         $this->_get_reg_status_selection(); //sets up the template args for the reg status array for the transaction.
 
-        $this->_template_args['transaction_form_url']    = add_query_arg(array(
+        $this->_template_args['transaction_form_url'] = add_query_arg(array(
             'action'  => 'edit_transaction',
             'process' => 'transaction',
         ), TXN_ADMIN_URL);
-        $this->_template_args['apply_payment_form_url']  = add_query_arg(array(
+        $this->_template_args['apply_payment_form_url'] = add_query_arg(array(
             'page'   => 'espresso_transactions',
             'action' => 'espresso_apply_payment',
         ), WP_AJAX_URL);
@@ -1124,7 +1124,7 @@ 
 
         // 'espresso_delete_payment_nonce'
 
-        $template_path = TXN_TEMPLATE_PATH . 'txn_admin_details_main_meta_box_txn_details.template.php';
+        $template_path = TXN_TEMPLATE_PATH.'txn_admin_details_main_meta_box_txn_details.template.php';
         echo EEH_Template::display_template($template_path, $this->_template_args, true);
     }
 
@@ -1154,11 +1154,11 @@ 
                 ),
             ),
         ));
-        if (! empty($reg_payments)) {
+        if ( ! empty($reg_payments)) {
             foreach ($payments as $payment) {
-                if (! $payment instanceof EE_Payment) {
+                if ( ! $payment instanceof EE_Payment) {
                     continue;
-                } elseif (! isset($existing_reg_payments[$payment->ID()])) {
+                } elseif ( ! isset($existing_reg_payments[$payment->ID()])) {
                     $existing_reg_payments[$payment->ID()] = array();
                 }
                 foreach ($reg_payments as $reg_payment) {
@@ -1187,7 +1187,7 @@ 
     protected function _get_registrations_to_apply_payment_to()
     {
         // we want any registration with an active status (ie: not deleted or cancelled)
-        $query_params                      = array(
+        $query_params = array(
             array(
                 'STS_ID' => array(
                     'IN',
@@ -1206,16 +1206,16 @@ 
                                                  '',
                                                  'clear: both; margin: 1.5em 0 0; display: none;'
                                              );
-        $registrations_to_apply_payment_to .= EEH_HTML::br() . EEH_HTML::div('', '', 'admin-primary-mbox-tbl-wrap');
+        $registrations_to_apply_payment_to .= EEH_HTML::br().EEH_HTML::div('', '', 'admin-primary-mbox-tbl-wrap');
         $registrations_to_apply_payment_to .= EEH_HTML::table('', '', 'admin-primary-mbox-tbl');
         $registrations_to_apply_payment_to .= EEH_HTML::thead(
             EEH_HTML::tr(
-                EEH_HTML::th(esc_html__('ID', 'event_espresso')) .
-                EEH_HTML::th(esc_html__('Registrant', 'event_espresso')) .
-                EEH_HTML::th(esc_html__('Ticket', 'event_espresso')) .
-                EEH_HTML::th(esc_html__('Event', 'event_espresso')) .
-                EEH_HTML::th(esc_html__('Paid', 'event_espresso'), '', 'txn-admin-payment-paid-td jst-cntr') .
-                EEH_HTML::th(esc_html__('Owing', 'event_espresso'), '', 'txn-admin-payment-owing-td jst-cntr') .
+                EEH_HTML::th(esc_html__('ID', 'event_espresso')).
+                EEH_HTML::th(esc_html__('Registrant', 'event_espresso')).
+                EEH_HTML::th(esc_html__('Ticket', 'event_espresso')).
+                EEH_HTML::th(esc_html__('Event', 'event_espresso')).
+                EEH_HTML::th(esc_html__('Paid', 'event_espresso'), '', 'txn-admin-payment-paid-td jst-cntr').
+                EEH_HTML::th(esc_html__('Owing', 'event_espresso'), '', 'txn-admin-payment-owing-td jst-cntr').
                 EEH_HTML::th(esc_html__('Apply', 'event_espresso'), '', 'jst-cntr')
             )
         );
@@ -1230,29 +1230,29 @@ 
                     : esc_html__('Unknown Attendee', 'event_espresso');
                 $owing                             = $registration->final_price() - $registration->paid();
                 $taxable                           = $registration->ticket()->taxable()
-                    ? ' <span class="smaller-text lt-grey-text"> ' . esc_html__('+ tax', 'event_espresso') . '</span>'
+                    ? ' <span class="smaller-text lt-grey-text"> '.esc_html__('+ tax', 'event_espresso').'</span>'
                     : '';
                 $checked = empty($existing_reg_payments) || in_array($registration->ID(), $existing_reg_payments)
                     ? ' checked="checked"'
                     : '';
-                $disabled                          = $registration->final_price() > 0 ? '' : ' disabled';
+                $disabled = $registration->final_price() > 0 ? '' : ' disabled';
                 $registrations_to_apply_payment_to .= EEH_HTML::tr(
-                    EEH_HTML::td($registration->ID()) .
-                    EEH_HTML::td($attendee_name) .
+                    EEH_HTML::td($registration->ID()).
+                    EEH_HTML::td($attendee_name).
                     EEH_HTML::td(
-                        $registration->ticket()->name() . ' : ' . $registration->ticket()->pretty_price() . $taxable
-                    ) .
-                    EEH_HTML::td($registration->event_name()) .
-                    EEH_HTML::td($registration->pretty_paid(), '', 'txn-admin-payment-paid-td jst-cntr') .
-                    EEH_HTML::td(EEH_Template::format_currency($owing), '', 'txn-admin-payment-owing-td jst-cntr') .
+                        $registration->ticket()->name().' : '.$registration->ticket()->pretty_price().$taxable
+                    ).
+                    EEH_HTML::td($registration->event_name()).
+                    EEH_HTML::td($registration->pretty_paid(), '', 'txn-admin-payment-paid-td jst-cntr').
+                    EEH_HTML::td(EEH_Template::format_currency($owing), '', 'txn-admin-payment-owing-td jst-cntr').
                     EEH_HTML::td(
-                        '<input type="checkbox" value="' . $registration->ID()
+                        '<input type="checkbox" value="'.$registration->ID()
                         . '" name="txn_admin_payment[registrations]"'
-                        . $checked . $disabled . '>',
+                        . $checked.$disabled.'>',
                         '',
                         'jst-cntr'
                     ),
-                    'apply-payment-registration-row-' . $registration->ID()
+                    'apply-payment-registration-row-'.$registration->ID()
                 );
             }
         }
@@ -1267,7 +1267,7 @@ 
             '',
             'clear description'
         );
-        $registrations_to_apply_payment_to                         .= EEH_HTML::divx();
+        $registrations_to_apply_payment_to .= EEH_HTML::divx();
         $this->_template_args['registrations_to_apply_payment_to'] = $registrations_to_apply_payment_to;
     }
 
@@ -1333,12 +1333,12 @@ 
                 array(
                     'OR*payment_method_for_payment' => array(
                         'PMD_ID'    => array('IN', $payment_methods_of_payments),
-                        'PMD_scope' => array('LIKE', '%' . EEM_Payment_Method::scope_admin . '%'),
+                        'PMD_scope' => array('LIKE', '%'.EEM_Payment_Method::scope_admin.'%'),
                     ),
                 ),
             );
         } else {
-            $query_args = array(array('PMD_scope' => array('LIKE', '%' . EEM_Payment_Method::scope_admin . '%')));
+            $query_args = array(array('PMD_scope' => array('LIKE', '%'.EEM_Payment_Method::scope_admin.'%')));
         }
         $this->_template_args['payment_methods'] = EEM_Payment_Method::instance()->get_all($query_args);
     }
@@ -1367,7 +1367,7 @@ 
             'Line_Item',
             array(array('LIN_type' => 'line-item'))
         );
-        if (! empty($line_items)) {
+        if ( ! empty($line_items)) {
             foreach ($line_items as $item) {
                 if ($item instanceof EE_Line_Item) {
                     switch ($item->OBJ_type()) {
@@ -1377,7 +1377,7 @@ 
                             $ticket = $item->ticket();
                             //right now we're only handling tickets here.
                             //Cause its expected that only tickets will have attendees right?
-                            if (! $ticket instanceof EE_Ticket) {
+                            if ( ! $ticket instanceof EE_Ticket) {
                                 continue;
                             }
                             try {
@@ -1386,7 +1386,7 @@ 
                                 EE_Error::add_error($e->getMessage(), __FILE__, __FUNCTION__, __LINE__);
                                 $event_name = esc_html__('Unknown Event', 'event_espresso');
                             }
-                            $event_name   .= ' - ' . $item->get('LIN_name');
+                            $event_name   .= ' - '.$item->get('LIN_name');
                             $ticket_price = EEH_Template::format_currency($item->get('LIN_unit_price'));
                             // now get all of the registrations for this transaction that use this ticket
                             $registrations = $ticket->get_many_related(
@@ -1394,7 +1394,7 @@ 
                                 array(array('TXN_ID' => $this->_transaction->ID()))
                             );
                             foreach ($registrations as $registration) {
-                                if (! $registration instanceof EE_Registration) {
+                                if ( ! $registration instanceof EE_Registration) {
                                     continue;
                                 }
                                 $this->_template_args['event_attendees'][$registration->ID()]['STS_ID']
@@ -1413,12 +1413,12 @@ 
                                     $this->_template_args['event_attendees'][$registration->ID()]['attendee']
                                         = $attendee->full_name();
                                     $this->_template_args['event_attendees'][$registration->ID()]['email']
-                                        = '<a href="mailto:' . $attendee->email() . '?subject=' . $event_name
+                                        = '<a href="mailto:'.$attendee->email().'?subject='.$event_name
                                           . esc_html__(
                                               ' Event',
                                               'event_espresso'
                                           )
-                                          . '">' . $attendee->email() . '</a>';
+                                          . '">'.$attendee->email().'</a>';
                                     $this->_template_args['event_attendees'][$registration->ID()]['address']
                                         = EEH_Address::format($attendee, 'inline', false, false);
                                 } else {
@@ -1442,7 +1442,7 @@ 
                 TXN_ADMIN_URL
             );
             echo EEH_Template::display_template(
-                TXN_TEMPLATE_PATH . 'txn_admin_details_main_meta_box_attendees.template.php',
+                TXN_TEMPLATE_PATH.'txn_admin_details_main_meta_box_attendees.template.php',
                 $this->_template_args,
                 true
             );
@@ -1478,12 +1478,12 @@ 
         $primary_att = $this->_transaction->primary_registration() instanceof EE_Registration
             ? $this->_transaction->primary_registration()->get_first_related('Attendee')
             : null;
-        if (! $primary_att instanceof EE_Attendee) {
+        if ( ! $primary_att instanceof EE_Attendee) {
             $this->_template_args['no_attendee_message'] = esc_html__(
                 'There is no attached contact for this transaction.  The transaction either failed due to an error or was abandoned.',
                 'event_espresso'
             );
-            $primary_att                                 = EEM_Attendee::instance()->create_default_object();
+            $primary_att = EEM_Attendee::instance()->create_default_object();
         }
         $this->_template_args['ATT_ID']            = $primary_att->ID();
         $this->_template_args['prime_reg_fname']   = $primary_att->fname();
@@ -1497,7 +1497,7 @@ 
         // get formatted address for registrant
         $this->_template_args['formatted_address'] = EEH_Address::format($primary_att);
         echo EEH_Template::display_template(
-            TXN_TEMPLATE_PATH . 'txn_admin_details_side_meta_box_registrant.template.php',
+            TXN_TEMPLATE_PATH.'txn_admin_details_side_meta_box_registrant.template.php',
             $this->_template_args,
             true
         );
@@ -1522,8 +1522,8 @@ 
             TXN_ADMIN_URL
         );
 
-        $template_path = TXN_TEMPLATE_PATH . 'txn_admin_details_side_meta_box_billing_info.template.php';
-        echo EEH_Template::display_template($template_path, $this->_template_args, true);/**/
+        $template_path = TXN_TEMPLATE_PATH.'txn_admin_details_side_meta_box_billing_info.template.php';
+        echo EEH_Template::display_template($template_path, $this->_template_args, true); /**/
     }
 
 
@@ -1548,7 +1548,7 @@ 
             'ee_edit_payments',
             'apply_payment_or_refund_from_registration_details'
         );
-        if (! empty($valid_data) && $has_access) {
+        if ( ! empty($valid_data) && $has_access) {
             $PAY_ID = $valid_data['PAY_ID'];
             //save  the new payment
             $payment = $this->_create_payment_from_request_data($valid_data);
@@ -1561,7 +1561,7 @@ 
                 $REG_IDs = $this->_get_REG_IDs_to_apply_payment_to($payment);
                 $this->_remove_existing_registration_payments($payment, $PAY_ID);
                 // apply payment to registrations (if applicable)
-                if (! empty($REG_IDs)) {
+                if ( ! empty($REG_IDs)) {
                     $this->_update_registration_payments($transaction, $payment, $REG_IDs);
                     $this->_maybe_send_notifications();
                     // now process status changes for the same registrations
@@ -1609,7 +1609,7 @@ 
                 );
             }
         }
-        $notices              = EE_Error::get_notices(
+        $notices = EE_Error::get_notices(
             false,
             false,
             false
@@ -1631,14 +1631,14 @@ 
      */
     protected function _validate_payment_request_data()
     {
-        if (! isset($this->_req_data['txn_admin_payment'])) {
+        if ( ! isset($this->_req_data['txn_admin_payment'])) {
             return false;
         }
         $payment_form = $this->_generate_payment_form_section();
         try {
             if ($payment_form->was_submitted()) {
                 $payment_form->receive_form_submission();
-                if (! $payment_form->is_valid()) {
+                if ( ! $payment_form->is_valid()) {
                     $submission_error_messages = array();
                     foreach ($payment_form->get_validation_errors_accumulated() as $validation_error) {
                         if ($validation_error instanceof EE_Validation_Error) {
@@ -1817,7 +1817,7 @@ 
             array('Y-m-d', 'g:i a')
         );
 
-        if (! $payment->save()) {
+        if ( ! $payment->save()) {
             EE_Error::add_error(
                 sprintf(
                     esc_html__('Payment %1$d has not been successfully saved to the database.', 'event_espresso'),
@@ -1882,7 +1882,7 @@ 
         $REG_IDs = array();
         // grab array of IDs for specific registrations to apply changes to
         if (isset($this->_req_data['txn_admin_payment']['registrations'])) {
-            $REG_IDs = (array)$this->_req_data['txn_admin_payment']['registrations'];
+            $REG_IDs = (array) $this->_req_data['txn_admin_payment']['registrations'];
         }
         //nothing specified ? then get all reg IDs
         if (empty($REG_IDs)) {
@@ -2010,12 +2010,12 @@ 
         // but add in some conditions regarding payment,
         // so that we don't apply payments to registrations that are free or have already been paid for
         // but ONLY if the payment is NOT a refund ( ie: the payment amount is not negative )
-        if (! $payment->is_a_refund()) {
+        if ( ! $payment->is_a_refund()) {
             $registration_query_where_params['REG_final_price']  = array('!=', 0);
             $registration_query_where_params['REG_final_price*'] = array('!=', 'REG_paid', true);
         }
         $registrations = $transaction->registrations(array($registration_query_where_params));
-        if (! empty($registrations)) {
+        if ( ! empty($registrations)) {
             /** @type EE_Payment_Processor $payment_processor */
             $payment_processor = EE_Registry::instance()->load_core('Payment_Processor');
             $payment_processor->process_registration_payments($transaction, $payment, $registrations);
@@ -2217,7 +2217,7 @@ 
     {
         $registration_payment_data = array();
         //if non empty reg_ids lets get an array of registrations and update the values for the apply_payment/refund rows.
-        if (! empty($REG_IDs)) {
+        if ( ! empty($REG_IDs)) {
             $registrations = EEM_Registration::instance()->get_all(array(array('REG_ID' => array('IN', $REG_IDs))));
             foreach ($registrations as $registration) {
                 if ($registration instanceof EE_Registration) {
@@ -2330,13 +2330,13 @@ 
                 'm/d/Y',
                 strtotime('-10 year')
             );
-        $end_date   = isset($this->_req_data['txn-filter-end-date'])
+        $end_date = isset($this->_req_data['txn-filter-end-date'])
             ? wp_strip_all_tags($this->_req_data['txn-filter-end-date'])
             : date('m/d/Y');
 
         //make sure our timestamps start and end right at the boundaries for each day
-        $start_date = date('Y-m-d', strtotime($start_date)) . ' 00:00:00';
-        $end_date   = date('Y-m-d', strtotime($end_date)) . ' 23:59:59';
+        $start_date = date('Y-m-d', strtotime($start_date)).' 00:00:00';
+        $end_date   = date('Y-m-d', strtotime($end_date)).' 23:59:59';
 
 
         //convert to timestamps
@@ -2353,7 +2353,7 @@ 
             date('Y-m-d H:i:s', $start_date),
             'Y-m-d H:i:s'
         );
-        $end_date   = EEM_Transaction::instance()->convert_datetime_for_query(
+        $end_date = EEM_Transaction::instance()->convert_datetime_for_query(
             'TXN_timestamp',
             date('Y-m-d H:i:s', $end_date),
             'Y-m-d H:i:s'
@@ -2395,7 +2395,7 @@ 
         }
 
         if (isset($this->_req_data['s'])) {
-            $search_string = '%' . $this->_req_data['s'] . '%';
+            $search_string = '%'.$this->_req_data['s'].'%';
             $_where['OR']  = array(
                 'Registration.Event.EVT_name'         => array('LIKE', $search_string),
                 'Registration.Event.EVT_desc'         => array('LIKE', $search_string),
@@ -2422,9 +2422,9 @@ 
         }
 
         //failed transactions
-        $failed    = (! empty($this->_req_data['status']) && $this->_req_data['status'] === 'failed' && ! $count)
+        $failed    = ( ! empty($this->_req_data['status']) && $this->_req_data['status'] === 'failed' && ! $count)
                      || ($count && $view === 'failed');
-        $abandoned = (! empty($this->_req_data['status']) && $this->_req_data['status'] === 'abandoned' && ! $count)
+        $abandoned = ( ! empty($this->_req_data['status']) && $this->_req_data['status'] === 'abandoned' && ! $count)
                      || ($count && $view === 'abandoned');
 
         if ($failed) {

core/request_stack/EE_Request.core.php

Indentation +363 added lines, -363 removed lines

@@ -22,369 +22,369 @@
 class EE_Request implements LegacyRequestInterface, InterminableInterface
 {
 
-    /**
-     * @var RequestInterface $request
-     */
-    private $request;
-
-    /**
-     * whether current request is for the admin but NOT via AJAX
-     *
-     * @var boolean $admin
-     */
-    public $admin = false;
-
-    /**
-     * whether current request is via AJAX
-     *
-     * @var boolean $ajax
-     */
-    public $ajax = false;
-
-    /**
-     * whether current request is via AJAX from the frontend of the site
-     *
-     * @var boolean $front_ajax
-     */
-    public $front_ajax = false;
-
-
-    /**
-     * @deprecated 4.9.53
-     * @param array $get
-     * @param array $post
-     * @param array $cookie
-     * @param array $server
-     */
-    public function __construct(
-        array $get = array(),
-        array $post = array(),
-        array $cookie = array(),
-        array $server = array()
-    ) {
-    }
-
-
-    /**
-     * @return RequestInterface
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     */
-    private function request()
-    {
-        if($this->request instanceof RequestInterface){
-            return $this->request;
-        }
-        $loader = LoaderFactory::getLoader();
-        $this->request = $loader->getShared('EventEspresso\core\services\request\RequestInterface');
-        return $this->request;
-    }
-
-
-    /**
-     * @param RequestInterface $request
-     */
-    public function setRequest(RequestInterface $request)
-    {
-        $this->request = $request;
-    }
-
-
-
-    /**
-     * @deprecated 4.9.53
-     * @return array
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     */
-    public function get_params()
-    {
-        return $this->request()->getParams();
-    }
-
-
-
-    /**
-     * @deprecated 4.9.53
-     * @return array
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     */
-    public function post_params()
-    {
-        return $this->request()->postParams();
-    }
-
-
-
-    /**
-     * @deprecated 4.9.53
-     * @return array
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     */
-    public function cookie_params()
-    {
-        return $this->request()->cookieParams();
-    }
-
-
-    /**
-     * @deprecated 4.9.53
-     * @return array
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     */
-    public function server_params()
-    {
-        return $this->request()->serverParams();
-    }
-
-
-
-    /**
-     * returns contents of $_REQUEST
-     *
-     * @deprecated 4.9.53
-     * @return array
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     */
-    public function params()
-    {
-        return $this->request()->requestParams();
-    }
-
-
-
-    /**
-     * @deprecated 4.9.53
-     * @param      $key
-     * @param      $value
-     * @param bool $override_ee
-     * @return void
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     */
-    public function set($key, $value, $override_ee = false)
-    {
-        $this->request()->setRequestParam($key, $value, $override_ee);
-    }
-
-
-
-    /**
-     * returns   the value for a request param if the given key exists
-     *
-     * @deprecated 4.9.53
-     * @param      $key
-     * @param null $default
-     * @return mixed
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     */
-    public function get($key, $default = null)
-    {
-        return $this->request()->getRequestParam($key, $default);
-    }
-
-
-
-    /**
-     * check if param exists
-     *
-     * @deprecated 4.9.53
-     * @param $key
-     * @return bool
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     */
-    public function is_set($key)
-    {
-        return $this->request()->requestParamIsSet($key);
-    }
-
-
-    /**
-     * remove param
-     *
-     * @deprecated 4.9.53
-     * @param      $key
-     * @param bool $unset_from_global_too
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     */
-    public function un_set($key, $unset_from_global_too = false)
-    {
-        $this->request()->unSetRequestParam($key, $unset_from_global_too);
-    }
-
-
-
-    /**
-     * @deprecated 4.9.53
-     * @return string
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     */
-    public function ip_address()
-    {
-        return $this->request()->ipAddress();
-    }
-
-
-    /**
-     * @deprecated 4.9.53
-     * @return bool
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     */
-    public function isAdmin()
-    {
-        return $this->request()->isAdmin();
-    }
-
-
-    /**
-     * @deprecated 4.9.53
-     * @return mixed
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     */
-    public function isAjax()
-    {
-        return $this->request()->isAjax();
-    }
-
-
-    /**
-     * @deprecated 4.9.53
-     * @return mixed
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     */
-    public function isFrontAjax()
-    {
-        return $this->request()->isFrontAjax();
-    }
-
-
-    /**
-     * @deprecated 4.9.53
-     * @return mixed|string
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     */
-    public function requestUri()
-    {
-        return $this->request()->requestUri();
-    }
-
-
-    /**
-     * @deprecated 4.9.53
-     * @return string
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     */
-    public function userAgent()
-    {
-        return $this->request()->userAgent();
-    }
-
-
-    /**
-     * @deprecated 4.9.53
-     * @param string $user_agent
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     */
-    public function setUserAgent($user_agent = '')
-    {
-        $this->request()->setUserAgent($user_agent);
-    }
-
-
-    /**
-     * @deprecated 4.9.53
-     * @return bool
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     */
-    public function isBot()
-    {
-        return $this->request()->isBot();
-    }
-
-
-    /**
-     * @deprecated 4.9.53
-     * @param bool $is_bot
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     */
-    public function setIsBot($is_bot)
-    {
-        $this->request()->setIsBot($is_bot);
-    }
-
-
-    /**
-     * check if a request parameter exists whose key that matches the supplied wildcard pattern
-     * and return the value for the first match found
-     * wildcards can be either of the following:
-     *      ? to represent a single character of any type
-     *      * to represent one or more characters of any type
-     *
-     * @param string     $pattern
-     * @param null|mixed $default
-     * @return false|int
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     */
-    public function getMatch($pattern, $default = null)
-    {
-        return $this->request()->getMatch($pattern, $default);
-    }
-
-
-    /**
-     * check if a request parameter exists whose key matches the supplied wildcard pattern
-     * wildcards can be either of the following:
-     *      ? to represent a single character of any type
-     *      * to represent one or more characters of any type
-     * returns true if a match is found or false if not
-     *
-     * @param string $pattern
-     * @return false|int
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     */
-    public function matches($pattern)
-    {
-        return $this->request()->matches($pattern);
-    }
+	/**
+	 * @var RequestInterface $request
+	 */
+	private $request;
+
+	/**
+	 * whether current request is for the admin but NOT via AJAX
+	 *
+	 * @var boolean $admin
+	 */
+	public $admin = false;
+
+	/**
+	 * whether current request is via AJAX
+	 *
+	 * @var boolean $ajax
+	 */
+	public $ajax = false;
+
+	/**
+	 * whether current request is via AJAX from the frontend of the site
+	 *
+	 * @var boolean $front_ajax
+	 */
+	public $front_ajax = false;
+
+
+	/**
+	 * @deprecated 4.9.53
+	 * @param array $get
+	 * @param array $post
+	 * @param array $cookie
+	 * @param array $server
+	 */
+	public function __construct(
+		array $get = array(),
+		array $post = array(),
+		array $cookie = array(),
+		array $server = array()
+	) {
+	}
+
+
+	/**
+	 * @return RequestInterface
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 */
+	private function request()
+	{
+		if($this->request instanceof RequestInterface){
+			return $this->request;
+		}
+		$loader = LoaderFactory::getLoader();
+		$this->request = $loader->getShared('EventEspresso\core\services\request\RequestInterface');
+		return $this->request;
+	}
+
+
+	/**
+	 * @param RequestInterface $request
+	 */
+	public function setRequest(RequestInterface $request)
+	{
+		$this->request = $request;
+	}
+
+
+
+	/**
+	 * @deprecated 4.9.53
+	 * @return array
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 */
+	public function get_params()
+	{
+		return $this->request()->getParams();
+	}
+
+
+
+	/**
+	 * @deprecated 4.9.53
+	 * @return array
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 */
+	public function post_params()
+	{
+		return $this->request()->postParams();
+	}
+
+
+
+	/**
+	 * @deprecated 4.9.53
+	 * @return array
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 */
+	public function cookie_params()
+	{
+		return $this->request()->cookieParams();
+	}
+
+
+	/**
+	 * @deprecated 4.9.53
+	 * @return array
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 */
+	public function server_params()
+	{
+		return $this->request()->serverParams();
+	}
+
+
+
+	/**
+	 * returns contents of $_REQUEST
+	 *
+	 * @deprecated 4.9.53
+	 * @return array
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 */
+	public function params()
+	{
+		return $this->request()->requestParams();
+	}
+
+
+
+	/**
+	 * @deprecated 4.9.53
+	 * @param      $key
+	 * @param      $value
+	 * @param bool $override_ee
+	 * @return void
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 */
+	public function set($key, $value, $override_ee = false)
+	{
+		$this->request()->setRequestParam($key, $value, $override_ee);
+	}
+
+
+
+	/**
+	 * returns   the value for a request param if the given key exists
+	 *
+	 * @deprecated 4.9.53
+	 * @param      $key
+	 * @param null $default
+	 * @return mixed
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 */
+	public function get($key, $default = null)
+	{
+		return $this->request()->getRequestParam($key, $default);
+	}
+
+
+
+	/**
+	 * check if param exists
+	 *
+	 * @deprecated 4.9.53
+	 * @param $key
+	 * @return bool
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 */
+	public function is_set($key)
+	{
+		return $this->request()->requestParamIsSet($key);
+	}
+
+
+	/**
+	 * remove param
+	 *
+	 * @deprecated 4.9.53
+	 * @param      $key
+	 * @param bool $unset_from_global_too
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 */
+	public function un_set($key, $unset_from_global_too = false)
+	{
+		$this->request()->unSetRequestParam($key, $unset_from_global_too);
+	}
+
+
+
+	/**
+	 * @deprecated 4.9.53
+	 * @return string
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 */
+	public function ip_address()
+	{
+		return $this->request()->ipAddress();
+	}
+
+
+	/**
+	 * @deprecated 4.9.53
+	 * @return bool
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 */
+	public function isAdmin()
+	{
+		return $this->request()->isAdmin();
+	}
+
+
+	/**
+	 * @deprecated 4.9.53
+	 * @return mixed
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 */
+	public function isAjax()
+	{
+		return $this->request()->isAjax();
+	}
+
+
+	/**
+	 * @deprecated 4.9.53
+	 * @return mixed
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 */
+	public function isFrontAjax()
+	{
+		return $this->request()->isFrontAjax();
+	}
+
+
+	/**
+	 * @deprecated 4.9.53
+	 * @return mixed|string
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 */
+	public function requestUri()
+	{
+		return $this->request()->requestUri();
+	}
+
+
+	/**
+	 * @deprecated 4.9.53
+	 * @return string
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 */
+	public function userAgent()
+	{
+		return $this->request()->userAgent();
+	}
+
+
+	/**
+	 * @deprecated 4.9.53
+	 * @param string $user_agent
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 */
+	public function setUserAgent($user_agent = '')
+	{
+		$this->request()->setUserAgent($user_agent);
+	}
+
+
+	/**
+	 * @deprecated 4.9.53
+	 * @return bool
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 */
+	public function isBot()
+	{
+		return $this->request()->isBot();
+	}
+
+
+	/**
+	 * @deprecated 4.9.53
+	 * @param bool $is_bot
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 */
+	public function setIsBot($is_bot)
+	{
+		$this->request()->setIsBot($is_bot);
+	}
+
+
+	/**
+	 * check if a request parameter exists whose key that matches the supplied wildcard pattern
+	 * and return the value for the first match found
+	 * wildcards can be either of the following:
+	 *      ? to represent a single character of any type
+	 *      * to represent one or more characters of any type
+	 *
+	 * @param string     $pattern
+	 * @param null|mixed $default
+	 * @return false|int
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 */
+	public function getMatch($pattern, $default = null)
+	{
+		return $this->request()->getMatch($pattern, $default);
+	}
+
+
+	/**
+	 * check if a request parameter exists whose key matches the supplied wildcard pattern
+	 * wildcards can be either of the following:
+	 *      ? to represent a single character of any type
+	 *      * to represent one or more characters of any type
+	 * returns true if a match is found or false if not
+	 *
+	 * @param string $pattern
+	 * @return false|int
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 */
+	public function matches($pattern)
+	{
+		return $this->request()->matches($pattern);
+	}
 
 
 }

core/libraries/iframe_display/Iframe.php

Indentation +347 added lines, -347 removed lines

@@ -7,7 +7,7 @@ 
 use EEH_Template;
 
 if ( ! defined( 'EVENT_ESPRESSO_VERSION' ) ) {
-    exit( 'No direct script access allowed' );
+	exit( 'No direct script access allowed' );
 }
 
 
@@ -23,387 +23,387 @@ 
 class Iframe
 {
 
-    /*
+	/*
     * HTML for notices and ajax gif
     * @var string $title
     */
-    protected $title = '';
+	protected $title = '';
 
-    /*
+	/*
     * HTML for the content being displayed
     * @var string $content
     */
-    protected $content = '';
+	protected $content = '';
 
-    /*
+	/*
     * whether or not to call wp_head() and wp_footer()
     * @var boolean $enqueue_wp_assets
     */
-    protected $enqueue_wp_assets = false;
+	protected $enqueue_wp_assets = false;
 
-    /*
+	/*
     * an array of CSS URLs
     * @var array $css
     */
-    protected $css = array();
+	protected $css = array();
 
-    /*
+	/*
     * an array of JS URLs to be set in the HTML header.
     * @var array $header_js
     */
-    protected $header_js = array();
+	protected $header_js = array();
 
-    /*
+	/*
     * an array of additional attributes to be added to <script> tags for header JS
     * @var array $footer_js
     */
-    protected $header_js_attributes = array();
+	protected $header_js_attributes = array();
 
-    /*
+	/*
     * an array of JS URLs to be displayed before the HTML </body> tag
     * @var array $footer_js
     */
-    protected $footer_js = array();
+	protected $footer_js = array();
 
-    /*
+	/*
     * an array of additional attributes to be added to <script> tags for footer JS
     * @var array $footer_js_attributes
     */
-    protected $footer_js_attributes = array();
+	protected $footer_js_attributes = array();
 
-    /*
+	/*
     * an array of JSON vars to be set in the HTML header.
     * @var array $localized_vars
     */
-    protected $localized_vars = array();
-
-
-
-    /**
-     * Iframe constructor
-     *
-     * @param string $title
-     * @param string $content
-     * @throws DomainException
-     */
-    public function __construct( $title, $content )
-    {
-        global $wp_version;
-        if ( ! defined( 'EE_IFRAME_DIR_URL' ) ) {
-            define( 'EE_IFRAME_DIR_URL', plugin_dir_url( __FILE__ ) );
-        }
-        $this->setContent( $content );
-        $this->setTitle( $title );
-        $this->addStylesheets(
-            apply_filters(
-                'FHEE___EventEspresso_core_libraries_iframe_display_Iframe__construct__default_css',
-                array(
-                    'site_theme'       => get_stylesheet_directory_uri() . DS
-                                          . 'style.css?ver=' . EVENT_ESPRESSO_VERSION,
-                    'dashicons'        => includes_url( 'css/dashicons.min.css?ver=' . $wp_version ),
-                    'espresso_default' => EE_GLOBAL_ASSETS_URL
-                                          . 'css/espresso_default.css?ver=' . EVENT_ESPRESSO_VERSION,
-                ),
-                $this
-            )
-        );
-        $this->addScripts(
-            apply_filters(
-                'FHEE___EventEspresso_core_libraries_iframe_display_Iframe__construct__default_js',
-                array(
-                    'jquery'        => includes_url( 'js/jquery/jquery.js?ver=' . $wp_version ),
-                    'espresso_core' => EE_GLOBAL_ASSETS_URL
-                                       . 'scripts/espresso_core.js?ver=' . EVENT_ESPRESSO_VERSION,
-                ),
-                $this
-            )
-        );
-        if (
-            apply_filters(
-                'FHEE___EventEspresso_core_libraries_iframe_display_Iframe__construct__load_default_theme_stylesheet',
-                false
-            )
-        ) {
-            $this->addStylesheets(
-                apply_filters(
-                    'FHEE___EventEspresso_core_libraries_iframe_display_Iframe__construct__default_theme_stylesheet',
-                    array('default_theme_stylesheet' => get_stylesheet_uri()),
-                    $this
-                )
-            );
-        }
-    }
-
-
-
-    /**
-     * @param string $title
-     * @throws DomainException
-     */
-    public function setTitle( $title )
-    {
-        if ( empty( $title ) ) {
-            throw new DomainException(
-                esc_html__( 'You must provide a page title in order to create an iframe.', 'event_espresso' )
-            );
-        }
-        $this->title = $title;
-    }
-
-
-
-    /**
-     * @param string $content
-     * @throws DomainException
-     */
-    public function setContent( $content )
-    {
-        if ( empty( $content ) ) {
-            throw new DomainException(
-                esc_html__( 'You must provide content in order to create an iframe.', 'event_espresso' )
-            );
-        }
-        $this->content = $content;
-    }
-
-
-
-    /**
-     * @param boolean $enqueue_wp_assets
-     */
-    public function setEnqueueWpAssets( $enqueue_wp_assets )
-    {
-        $this->enqueue_wp_assets = filter_var( $enqueue_wp_assets, FILTER_VALIDATE_BOOLEAN );
-    }
-
-
-
-    /**
-     * @param array $stylesheets
-     * @throws DomainException
-     */
-    public function addStylesheets( array $stylesheets )
-    {
-        if ( empty( $stylesheets ) ) {
-            throw new DomainException(
-                esc_html__(
-                    'A non-empty array of URLs, is required to add a CSS stylesheet to an iframe.',
-                    'event_espresso'
-                )
-            );
-        }
-        foreach ( $stylesheets as $handle => $stylesheet ) {
-            $this->css[ $handle ] = $stylesheet;
-        }
-    }
-
-
-
-    /**
-     * @param array $scripts
-     * @param bool  $add_to_header
-     * @throws DomainException
-     */
-    public function addScripts( array $scripts, $add_to_header = false )
-    {
-        if ( empty( $scripts ) ) {
-            throw new DomainException(
-                esc_html__(
-                    'A non-empty array of URLs, is required to add Javascript to an iframe.',
-                    'event_espresso'
-                )
-            );
-        }
-        foreach ( $scripts as $handle => $script ) {
-            if ( $add_to_header ) {
-                $this->header_js[ $handle ] = $script;
-            } else {
-                $this->footer_js[ $handle ] = $script;
-            }
-        }
-    }
-
-
-
-    /**
-     * @param array $script_attributes
-     * @param bool  $add_to_header
-     * @throws DomainException
-     */
-    public function addScriptAttributes( array $script_attributes, $add_to_header = false )
-    {
-        if ( empty($script_attributes ) ) {
-            throw new DomainException(
-                esc_html__(
-                    'A non-empty array of strings, is required to add attributes to iframe Javascript.',
-                    'event_espresso'
-                )
-            );
-        }
-        foreach ($script_attributes as $handle => $script_attribute ) {
-            if ( $add_to_header ) {
-                $this->header_js_attributes[ $handle ] = $script_attribute;
-            } else {
-                $this->footer_js_attributes[ $handle ] = $script_attribute;
-            }
-        }
-    }
-
-
-
-    /**
-     * @param array  $vars
-     * @param string $var_name
-     * @throws DomainException
-     */
-    public function addLocalizedVars( array $vars, $var_name = 'eei18n' )
-    {
-        if ( empty( $vars ) ) {
-            throw new DomainException(
-                esc_html__(
-                    'A non-empty array of vars, is required to add localized Javascript vars to an iframe.',
-                    'event_espresso'
-                )
-            );
-        }
-        foreach ( $vars as $handle => $var ) {
-            if ( $var_name === 'eei18n' ) {
-                EE_Registry::$i18n_js_strings[ $handle ] = $var;
-            } elseif ($var_name === 'eeCAL' && $handle === 'espresso_calendar') {
-                $this->localized_vars[ $var_name ] = $var;
-            } else {
-                if ( ! isset( $this->localized_vars[ $var_name ] ) ) {
-                    $this->localized_vars[ $var_name ] = array();
-                }
-                $this->localized_vars[ $var_name ][ $handle ] = $var;
-            }
-        }
-    }
-
-
-
-    /**
-     * @param string $utm_content
-     * @throws DomainException
-     */
-    public function display($utm_content = '')
-    {
-        $this->content .= EEH_Template::powered_by_event_espresso(
-            '',
-            '',
-            ! empty($utm_content) ? array('utm_content' => $utm_content) : array()
-        );
-        EE_System::do_not_cache();
-        echo $this->getTemplate();
-        exit;
-    }
-
-
-
-    /**
-     * @return string
-     * @throws DomainException
-     */
-    public function getTemplate()
-    {
-        return EEH_Template::display_template(
-            __DIR__ . DIRECTORY_SEPARATOR . 'iframe_wrapper.template.php',
-            array(
-                'title'             => apply_filters(
-                    'FHEE___EventEspresso_core_libraries_iframe_display_Iframe__getTemplate__title',
-                    $this->title,
-                    $this
-                ),
-                'content'           => apply_filters(
-                    'FHEE___EventEspresso_core_libraries_iframe_display_Iframe__getTemplate__content',
-                    $this->content,
-                    $this
-                ),
-                'enqueue_wp_assets' => apply_filters(
-                    'FHEE___EventEspresso_core_libraries_iframe_display_Iframe__getTemplate__enqueue_wp_assets',
-                    $this->enqueue_wp_assets,
-                    $this
-                ),
-                'css'               => (array)apply_filters(
-                    'FHEE___EventEspresso_core_libraries_iframe_display_Iframe__getTemplate__css_urls',
-                    $this->css,
-                    $this
-                ),
-                'header_js'         => (array)apply_filters(
-                    'FHEE___EventEspresso_core_libraries_iframe_display_Iframe__getTemplate__header_js_urls',
-                    $this->header_js,
-                    $this
-                ),
-                'header_js_attributes' => (array) apply_filters(
-                    'FHEE___EventEspresso_core_libraries_iframe_display_Iframe__getTemplate__header_js_attributes',
-                    $this->header_js_attributes,
-                    $this
-                ),
-                'footer_js'         => (array)apply_filters(
-                    'FHEE___EventEspresso_core_libraries_iframe_display_Iframe__getTemplate__footer_js_urls',
-                    $this->footer_js,
-                    $this
-                ),
-                'footer_js_attributes'         => (array)apply_filters(
-                    'FHEE___EventEspresso_core_libraries_iframe_display_Iframe__getTemplate__footer_js_attributes',
-                    $this->footer_js_attributes,
-                    $this
-                ),
-                'eei18n'            => apply_filters(
-                    'FHEE___EventEspresso_core_libraries_iframe_display_Iframe__getTemplate__eei18n_js_strings',
-                    EE_Registry::localize_i18n_js_strings() . $this->localizeJsonVars(),
-                    $this
-                ),
-                'notices'           => EEH_Template::display_template(
-                    EE_TEMPLATES . 'espresso-ajax-notices.template.php',
-                    array(),
-                    true
-                ),
-            ),
-            true,
-            true
-        );
-    }
-
-
-
-    /**
-     * localizeJsonVars
-     *
-     * @return string
-     */
-    public function localizeJsonVars()
-    {
-        $JSON = '';
-        foreach ( (array)$this->localized_vars as $var_name => $vars ) {
-            $this->localized_vars[ $var_name ] = $this->encodeJsonVars($vars );
-            $JSON .= "/* <![CDATA[ */ var {$var_name} = ";
-            $JSON .= wp_json_encode( $this->localized_vars[ $var_name ] );
-            $JSON .= '; /* ]]> */';
-        }
-        return $JSON;
-    }
-
-
-
-    /**
-     * @param bool|int|float|string|array $var
-     * @return array
-     */
-    public function encodeJsonVars( $var )
-    {
-        if ( is_array( $var ) ) {
-            $localized_vars = array();
-            foreach ( (array)$var as $key => $value ) {
-                $localized_vars[ $key ] = $this->encodeJsonVars( $value );
-            }
-            return $localized_vars;
-        }
-        if ( is_scalar( $var ) ) {
-            return html_entity_decode( (string)$var, ENT_QUOTES, 'UTF-8' );
-        }
-        return null;
-    }
+	protected $localized_vars = array();
+
+
+
+	/**
+	 * Iframe constructor
+	 *
+	 * @param string $title
+	 * @param string $content
+	 * @throws DomainException
+	 */
+	public function __construct( $title, $content )
+	{
+		global $wp_version;
+		if ( ! defined( 'EE_IFRAME_DIR_URL' ) ) {
+			define( 'EE_IFRAME_DIR_URL', plugin_dir_url( __FILE__ ) );
+		}
+		$this->setContent( $content );
+		$this->setTitle( $title );
+		$this->addStylesheets(
+			apply_filters(
+				'FHEE___EventEspresso_core_libraries_iframe_display_Iframe__construct__default_css',
+				array(
+					'site_theme'       => get_stylesheet_directory_uri() . DS
+										  . 'style.css?ver=' . EVENT_ESPRESSO_VERSION,
+					'dashicons'        => includes_url( 'css/dashicons.min.css?ver=' . $wp_version ),
+					'espresso_default' => EE_GLOBAL_ASSETS_URL
+										  . 'css/espresso_default.css?ver=' . EVENT_ESPRESSO_VERSION,
+				),
+				$this
+			)
+		);
+		$this->addScripts(
+			apply_filters(
+				'FHEE___EventEspresso_core_libraries_iframe_display_Iframe__construct__default_js',
+				array(
+					'jquery'        => includes_url( 'js/jquery/jquery.js?ver=' . $wp_version ),
+					'espresso_core' => EE_GLOBAL_ASSETS_URL
+									   . 'scripts/espresso_core.js?ver=' . EVENT_ESPRESSO_VERSION,
+				),
+				$this
+			)
+		);
+		if (
+			apply_filters(
+				'FHEE___EventEspresso_core_libraries_iframe_display_Iframe__construct__load_default_theme_stylesheet',
+				false
+			)
+		) {
+			$this->addStylesheets(
+				apply_filters(
+					'FHEE___EventEspresso_core_libraries_iframe_display_Iframe__construct__default_theme_stylesheet',
+					array('default_theme_stylesheet' => get_stylesheet_uri()),
+					$this
+				)
+			);
+		}
+	}
+
+
+
+	/**
+	 * @param string $title
+	 * @throws DomainException
+	 */
+	public function setTitle( $title )
+	{
+		if ( empty( $title ) ) {
+			throw new DomainException(
+				esc_html__( 'You must provide a page title in order to create an iframe.', 'event_espresso' )
+			);
+		}
+		$this->title = $title;
+	}
+
+
+
+	/**
+	 * @param string $content
+	 * @throws DomainException
+	 */
+	public function setContent( $content )
+	{
+		if ( empty( $content ) ) {
+			throw new DomainException(
+				esc_html__( 'You must provide content in order to create an iframe.', 'event_espresso' )
+			);
+		}
+		$this->content = $content;
+	}
+
+
+
+	/**
+	 * @param boolean $enqueue_wp_assets
+	 */
+	public function setEnqueueWpAssets( $enqueue_wp_assets )
+	{
+		$this->enqueue_wp_assets = filter_var( $enqueue_wp_assets, FILTER_VALIDATE_BOOLEAN );
+	}
+
+
+
+	/**
+	 * @param array $stylesheets
+	 * @throws DomainException
+	 */
+	public function addStylesheets( array $stylesheets )
+	{
+		if ( empty( $stylesheets ) ) {
+			throw new DomainException(
+				esc_html__(
+					'A non-empty array of URLs, is required to add a CSS stylesheet to an iframe.',
+					'event_espresso'
+				)
+			);
+		}
+		foreach ( $stylesheets as $handle => $stylesheet ) {
+			$this->css[ $handle ] = $stylesheet;
+		}
+	}
+
+
+
+	/**
+	 * @param array $scripts
+	 * @param bool  $add_to_header
+	 * @throws DomainException
+	 */
+	public function addScripts( array $scripts, $add_to_header = false )
+	{
+		if ( empty( $scripts ) ) {
+			throw new DomainException(
+				esc_html__(
+					'A non-empty array of URLs, is required to add Javascript to an iframe.',
+					'event_espresso'
+				)
+			);
+		}
+		foreach ( $scripts as $handle => $script ) {
+			if ( $add_to_header ) {
+				$this->header_js[ $handle ] = $script;
+			} else {
+				$this->footer_js[ $handle ] = $script;
+			}
+		}
+	}
+
+
+
+	/**
+	 * @param array $script_attributes
+	 * @param bool  $add_to_header
+	 * @throws DomainException
+	 */
+	public function addScriptAttributes( array $script_attributes, $add_to_header = false )
+	{
+		if ( empty($script_attributes ) ) {
+			throw new DomainException(
+				esc_html__(
+					'A non-empty array of strings, is required to add attributes to iframe Javascript.',
+					'event_espresso'
+				)
+			);
+		}
+		foreach ($script_attributes as $handle => $script_attribute ) {
+			if ( $add_to_header ) {
+				$this->header_js_attributes[ $handle ] = $script_attribute;
+			} else {
+				$this->footer_js_attributes[ $handle ] = $script_attribute;
+			}
+		}
+	}
+
+
+
+	/**
+	 * @param array  $vars
+	 * @param string $var_name
+	 * @throws DomainException
+	 */
+	public function addLocalizedVars( array $vars, $var_name = 'eei18n' )
+	{
+		if ( empty( $vars ) ) {
+			throw new DomainException(
+				esc_html__(
+					'A non-empty array of vars, is required to add localized Javascript vars to an iframe.',
+					'event_espresso'
+				)
+			);
+		}
+		foreach ( $vars as $handle => $var ) {
+			if ( $var_name === 'eei18n' ) {
+				EE_Registry::$i18n_js_strings[ $handle ] = $var;
+			} elseif ($var_name === 'eeCAL' && $handle === 'espresso_calendar') {
+				$this->localized_vars[ $var_name ] = $var;
+			} else {
+				if ( ! isset( $this->localized_vars[ $var_name ] ) ) {
+					$this->localized_vars[ $var_name ] = array();
+				}
+				$this->localized_vars[ $var_name ][ $handle ] = $var;
+			}
+		}
+	}
+
+
+
+	/**
+	 * @param string $utm_content
+	 * @throws DomainException
+	 */
+	public function display($utm_content = '')
+	{
+		$this->content .= EEH_Template::powered_by_event_espresso(
+			'',
+			'',
+			! empty($utm_content) ? array('utm_content' => $utm_content) : array()
+		);
+		EE_System::do_not_cache();
+		echo $this->getTemplate();
+		exit;
+	}
+
+
+
+	/**
+	 * @return string
+	 * @throws DomainException
+	 */
+	public function getTemplate()
+	{
+		return EEH_Template::display_template(
+			__DIR__ . DIRECTORY_SEPARATOR . 'iframe_wrapper.template.php',
+			array(
+				'title'             => apply_filters(
+					'FHEE___EventEspresso_core_libraries_iframe_display_Iframe__getTemplate__title',
+					$this->title,
+					$this
+				),
+				'content'           => apply_filters(
+					'FHEE___EventEspresso_core_libraries_iframe_display_Iframe__getTemplate__content',
+					$this->content,
+					$this
+				),
+				'enqueue_wp_assets' => apply_filters(
+					'FHEE___EventEspresso_core_libraries_iframe_display_Iframe__getTemplate__enqueue_wp_assets',
+					$this->enqueue_wp_assets,
+					$this
+				),
+				'css'               => (array)apply_filters(
+					'FHEE___EventEspresso_core_libraries_iframe_display_Iframe__getTemplate__css_urls',
+					$this->css,
+					$this
+				),
+				'header_js'         => (array)apply_filters(
+					'FHEE___EventEspresso_core_libraries_iframe_display_Iframe__getTemplate__header_js_urls',
+					$this->header_js,
+					$this
+				),
+				'header_js_attributes' => (array) apply_filters(
+					'FHEE___EventEspresso_core_libraries_iframe_display_Iframe__getTemplate__header_js_attributes',
+					$this->header_js_attributes,
+					$this
+				),
+				'footer_js'         => (array)apply_filters(
+					'FHEE___EventEspresso_core_libraries_iframe_display_Iframe__getTemplate__footer_js_urls',
+					$this->footer_js,
+					$this
+				),
+				'footer_js_attributes'         => (array)apply_filters(
+					'FHEE___EventEspresso_core_libraries_iframe_display_Iframe__getTemplate__footer_js_attributes',
+					$this->footer_js_attributes,
+					$this
+				),
+				'eei18n'            => apply_filters(
+					'FHEE___EventEspresso_core_libraries_iframe_display_Iframe__getTemplate__eei18n_js_strings',
+					EE_Registry::localize_i18n_js_strings() . $this->localizeJsonVars(),
+					$this
+				),
+				'notices'           => EEH_Template::display_template(
+					EE_TEMPLATES . 'espresso-ajax-notices.template.php',
+					array(),
+					true
+				),
+			),
+			true,
+			true
+		);
+	}
+
+
+
+	/**
+	 * localizeJsonVars
+	 *
+	 * @return string
+	 */
+	public function localizeJsonVars()
+	{
+		$JSON = '';
+		foreach ( (array)$this->localized_vars as $var_name => $vars ) {
+			$this->localized_vars[ $var_name ] = $this->encodeJsonVars($vars );
+			$JSON .= "/* <![CDATA[ */ var {$var_name} = ";
+			$JSON .= wp_json_encode( $this->localized_vars[ $var_name ] );
+			$JSON .= '; /* ]]> */';
+		}
+		return $JSON;
+	}
+
+
+
+	/**
+	 * @param bool|int|float|string|array $var
+	 * @return array
+	 */
+	public function encodeJsonVars( $var )
+	{
+		if ( is_array( $var ) ) {
+			$localized_vars = array();
+			foreach ( (array)$var as $key => $value ) {
+				$localized_vars[ $key ] = $this->encodeJsonVars( $value );
+			}
+			return $localized_vars;
+		}
+		if ( is_scalar( $var ) ) {
+			return html_entity_decode( (string)$var, ENT_QUOTES, 'UTF-8' );
+		}
+		return null;
+	}
 
 
 

Spacing +62 added lines, -62 removed lines

@@ -6,8 +6,8 @@ 
 use EE_System;
 use EEH_Template;
 
-if ( ! defined( 'EVENT_ESPRESSO_VERSION' ) ) {
-    exit( 'No direct script access allowed' );
+if ( ! defined('EVENT_ESPRESSO_VERSION')) {
+    exit('No direct script access allowed');
 }
 
 
@@ -86,23 +86,23 @@ 
      * @param string $content
      * @throws DomainException
      */
-    public function __construct( $title, $content )
+    public function __construct($title, $content)
     {
         global $wp_version;
-        if ( ! defined( 'EE_IFRAME_DIR_URL' ) ) {
-            define( 'EE_IFRAME_DIR_URL', plugin_dir_url( __FILE__ ) );
+        if ( ! defined('EE_IFRAME_DIR_URL')) {
+            define('EE_IFRAME_DIR_URL', plugin_dir_url(__FILE__));
         }
-        $this->setContent( $content );
-        $this->setTitle( $title );
+        $this->setContent($content);
+        $this->setTitle($title);
         $this->addStylesheets(
             apply_filters(
                 'FHEE___EventEspresso_core_libraries_iframe_display_Iframe__construct__default_css',
                 array(
-                    'site_theme'       => get_stylesheet_directory_uri() . DS
-                                          . 'style.css?ver=' . EVENT_ESPRESSO_VERSION,
-                    'dashicons'        => includes_url( 'css/dashicons.min.css?ver=' . $wp_version ),
+                    'site_theme'       => get_stylesheet_directory_uri().DS
+                                          . 'style.css?ver='.EVENT_ESPRESSO_VERSION,
+                    'dashicons'        => includes_url('css/dashicons.min.css?ver='.$wp_version),
                     'espresso_default' => EE_GLOBAL_ASSETS_URL
-                                          . 'css/espresso_default.css?ver=' . EVENT_ESPRESSO_VERSION,
+                                          . 'css/espresso_default.css?ver='.EVENT_ESPRESSO_VERSION,
                 ),
                 $this
             )
@@ -111,9 +111,9 @@ 
             apply_filters(
                 'FHEE___EventEspresso_core_libraries_iframe_display_Iframe__construct__default_js',
                 array(
-                    'jquery'        => includes_url( 'js/jquery/jquery.js?ver=' . $wp_version ),
+                    'jquery'        => includes_url('js/jquery/jquery.js?ver='.$wp_version),
                     'espresso_core' => EE_GLOBAL_ASSETS_URL
-                                       . 'scripts/espresso_core.js?ver=' . EVENT_ESPRESSO_VERSION,
+                                       . 'scripts/espresso_core.js?ver='.EVENT_ESPRESSO_VERSION,
                 ),
                 $this
             )
@@ -140,11 +140,11 @@ 
      * @param string $title
      * @throws DomainException
      */
-    public function setTitle( $title )
+    public function setTitle($title)
     {
-        if ( empty( $title ) ) {
+        if (empty($title)) {
             throw new DomainException(
-                esc_html__( 'You must provide a page title in order to create an iframe.', 'event_espresso' )
+                esc_html__('You must provide a page title in order to create an iframe.', 'event_espresso')
             );
         }
         $this->title = $title;
@@ -156,11 +156,11 @@ 
      * @param string $content
      * @throws DomainException
      */
-    public function setContent( $content )
+    public function setContent($content)
     {
-        if ( empty( $content ) ) {
+        if (empty($content)) {
             throw new DomainException(
-                esc_html__( 'You must provide content in order to create an iframe.', 'event_espresso' )
+                esc_html__('You must provide content in order to create an iframe.', 'event_espresso')
             );
         }
         $this->content = $content;
@@ -171,9 +171,9 @@ 
     /**
      * @param boolean $enqueue_wp_assets
      */
-    public function setEnqueueWpAssets( $enqueue_wp_assets )
+    public function setEnqueueWpAssets($enqueue_wp_assets)
     {
-        $this->enqueue_wp_assets = filter_var( $enqueue_wp_assets, FILTER_VALIDATE_BOOLEAN );
+        $this->enqueue_wp_assets = filter_var($enqueue_wp_assets, FILTER_VALIDATE_BOOLEAN);
     }
 
 
@@ -182,9 +182,9 @@ 
      * @param array $stylesheets
      * @throws DomainException
      */
-    public function addStylesheets( array $stylesheets )
+    public function addStylesheets(array $stylesheets)
     {
-        if ( empty( $stylesheets ) ) {
+        if (empty($stylesheets)) {
             throw new DomainException(
                 esc_html__(
                     'A non-empty array of URLs, is required to add a CSS stylesheet to an iframe.',
@@ -192,8 +192,8 @@ 
                 )
             );
         }
-        foreach ( $stylesheets as $handle => $stylesheet ) {
-            $this->css[ $handle ] = $stylesheet;
+        foreach ($stylesheets as $handle => $stylesheet) {
+            $this->css[$handle] = $stylesheet;
         }
     }
 
@@ -204,9 +204,9 @@ 
      * @param bool  $add_to_header
      * @throws DomainException
      */
-    public function addScripts( array $scripts, $add_to_header = false )
+    public function addScripts(array $scripts, $add_to_header = false)
     {
-        if ( empty( $scripts ) ) {
+        if (empty($scripts)) {
             throw new DomainException(
                 esc_html__(
                     'A non-empty array of URLs, is required to add Javascript to an iframe.',
@@ -214,11 +214,11 @@ 
                 )
             );
         }
-        foreach ( $scripts as $handle => $script ) {
-            if ( $add_to_header ) {
-                $this->header_js[ $handle ] = $script;
+        foreach ($scripts as $handle => $script) {
+            if ($add_to_header) {
+                $this->header_js[$handle] = $script;
             } else {
-                $this->footer_js[ $handle ] = $script;
+                $this->footer_js[$handle] = $script;
             }
         }
     }
@@ -230,9 +230,9 @@ 
      * @param bool  $add_to_header
      * @throws DomainException
      */
-    public function addScriptAttributes( array $script_attributes, $add_to_header = false )
+    public function addScriptAttributes(array $script_attributes, $add_to_header = false)
     {
-        if ( empty($script_attributes ) ) {
+        if (empty($script_attributes)) {
             throw new DomainException(
                 esc_html__(
                     'A non-empty array of strings, is required to add attributes to iframe Javascript.',
@@ -240,11 +240,11 @@ 
                 )
             );
         }
-        foreach ($script_attributes as $handle => $script_attribute ) {
-            if ( $add_to_header ) {
-                $this->header_js_attributes[ $handle ] = $script_attribute;
+        foreach ($script_attributes as $handle => $script_attribute) {
+            if ($add_to_header) {
+                $this->header_js_attributes[$handle] = $script_attribute;
             } else {
-                $this->footer_js_attributes[ $handle ] = $script_attribute;
+                $this->footer_js_attributes[$handle] = $script_attribute;
             }
         }
     }
@@ -256,9 +256,9 @@ 
      * @param string $var_name
      * @throws DomainException
      */
-    public function addLocalizedVars( array $vars, $var_name = 'eei18n' )
+    public function addLocalizedVars(array $vars, $var_name = 'eei18n')
     {
-        if ( empty( $vars ) ) {
+        if (empty($vars)) {
             throw new DomainException(
                 esc_html__(
                     'A non-empty array of vars, is required to add localized Javascript vars to an iframe.',
@@ -266,16 +266,16 @@ 
                 )
             );
         }
-        foreach ( $vars as $handle => $var ) {
-            if ( $var_name === 'eei18n' ) {
-                EE_Registry::$i18n_js_strings[ $handle ] = $var;
+        foreach ($vars as $handle => $var) {
+            if ($var_name === 'eei18n') {
+                EE_Registry::$i18n_js_strings[$handle] = $var;
             } elseif ($var_name === 'eeCAL' && $handle === 'espresso_calendar') {
-                $this->localized_vars[ $var_name ] = $var;
+                $this->localized_vars[$var_name] = $var;
             } else {
-                if ( ! isset( $this->localized_vars[ $var_name ] ) ) {
-                    $this->localized_vars[ $var_name ] = array();
+                if ( ! isset($this->localized_vars[$var_name])) {
+                    $this->localized_vars[$var_name] = array();
                 }
-                $this->localized_vars[ $var_name ][ $handle ] = $var;
+                $this->localized_vars[$var_name][$handle] = $var;
             }
         }
     }
@@ -307,7 +307,7 @@ 
     public function getTemplate()
     {
         return EEH_Template::display_template(
-            __DIR__ . DIRECTORY_SEPARATOR . 'iframe_wrapper.template.php',
+            __DIR__.DIRECTORY_SEPARATOR.'iframe_wrapper.template.php',
             array(
                 'title'             => apply_filters(
                     'FHEE___EventEspresso_core_libraries_iframe_display_Iframe__getTemplate__title',
@@ -324,12 +324,12 @@ 
                     $this->enqueue_wp_assets,
                     $this
                 ),
-                'css'               => (array)apply_filters(
+                'css'               => (array) apply_filters(
                     'FHEE___EventEspresso_core_libraries_iframe_display_Iframe__getTemplate__css_urls',
                     $this->css,
                     $this
                 ),
-                'header_js'         => (array)apply_filters(
+                'header_js'         => (array) apply_filters(
                     'FHEE___EventEspresso_core_libraries_iframe_display_Iframe__getTemplate__header_js_urls',
                     $this->header_js,
                     $this
@@ -339,23 +339,23 @@ 
                     $this->header_js_attributes,
                     $this
                 ),
-                'footer_js'         => (array)apply_filters(
+                'footer_js'         => (array) apply_filters(
                     'FHEE___EventEspresso_core_libraries_iframe_display_Iframe__getTemplate__footer_js_urls',
                     $this->footer_js,
                     $this
                 ),
-                'footer_js_attributes'         => (array)apply_filters(
+                'footer_js_attributes'         => (array) apply_filters(
                     'FHEE___EventEspresso_core_libraries_iframe_display_Iframe__getTemplate__footer_js_attributes',
                     $this->footer_js_attributes,
                     $this
                 ),
                 'eei18n'            => apply_filters(
                     'FHEE___EventEspresso_core_libraries_iframe_display_Iframe__getTemplate__eei18n_js_strings',
-                    EE_Registry::localize_i18n_js_strings() . $this->localizeJsonVars(),
+                    EE_Registry::localize_i18n_js_strings().$this->localizeJsonVars(),
                     $this
                 ),
                 'notices'           => EEH_Template::display_template(
-                    EE_TEMPLATES . 'espresso-ajax-notices.template.php',
+                    EE_TEMPLATES.'espresso-ajax-notices.template.php',
                     array(),
                     true
                 ),
@@ -375,10 +375,10 @@ 
     public function localizeJsonVars()
     {
         $JSON = '';
-        foreach ( (array)$this->localized_vars as $var_name => $vars ) {
-            $this->localized_vars[ $var_name ] = $this->encodeJsonVars($vars );
+        foreach ((array) $this->localized_vars as $var_name => $vars) {
+            $this->localized_vars[$var_name] = $this->encodeJsonVars($vars);
             $JSON .= "/* <![CDATA[ */ var {$var_name} = ";
-            $JSON .= wp_json_encode( $this->localized_vars[ $var_name ] );
+            $JSON .= wp_json_encode($this->localized_vars[$var_name]);
             $JSON .= '; /* ]]> */';
         }
         return $JSON;
@@ -390,17 +390,17 @@ 
      * @param bool|int|float|string|array $var
      * @return array
      */
-    public function encodeJsonVars( $var )
+    public function encodeJsonVars($var)
     {
-        if ( is_array( $var ) ) {
+        if (is_array($var)) {
             $localized_vars = array();
-            foreach ( (array)$var as $key => $value ) {
-                $localized_vars[ $key ] = $this->encodeJsonVars( $value );
+            foreach ((array) $var as $key => $value) {
+                $localized_vars[$key] = $this->encodeJsonVars($value);
             }
             return $localized_vars;
         }
-        if ( is_scalar( $var ) ) {
-            return html_entity_decode( (string)$var, ENT_QUOTES, 'UTF-8' );
+        if (is_scalar($var)) {
+            return html_entity_decode((string) $var, ENT_QUOTES, 'UTF-8');
         }
         return null;
     }