eventespresso / event-espresso-core

core/libraries/form_sections/strategies/layout/EE_Template_Layout.strategy.php

Indentation +196 added lines, -196 removed lines

@@ -23,200 +23,200 @@
 class EE_Template_Layout extends EE_Div_Per_Section_Layout
 {
 
-    protected $_layout_template_file       = null;
-
-    protected $_layout_begin_template_file = null;
-
-    protected $_input_template_file        = null;
-
-    protected $_subsection_template_file   = null;
-
-    protected $_layout_end_template_file   = null;
-
-    protected $_template_args              = array();
-
-
-
-    /**
-     * @param array $template_options {
-     * @type string $_layout_template_file
-     * @type string $_begin_template_file
-     * @type string $_input_template_file
-     * @type string $_subsection_template_file
-     * @type string $_end_template_file
-     * @type array  $_template_args
-     *                                }
-     */
-    public function __construct($template_options = array())
-    {
-        // loop through incoming options
-        foreach ($template_options as $key => $value) {
-            // add underscore to $key to match property names
-            $_key = '_' . $key;
-            if (property_exists($this, $_key)) {
-                $this->{$_key} = $value;
-            }
-        }
-        parent::__construct();
-    }
-
-
-
-    /**
-     * Also has the side effect of enqueuing any needed JS and CSS for
-     * this form.
-     * Creates all the HTML necessary for displaying this form, its inputs, and
-     * proper subsections.
-     * Returns the HTML
-     *
-     * @return string
-     */
-    public function layout_form()
-    {
-        if ($this->_layout_template_file) {
-            return EEH_Template::locate_template($this->_layout_template_file, $this->template_args(), true, true);
-        } else {
-            return parent::layout_form();
-        }
-    }
-
-
-
-    /**
-     * opening div tag for a form
-     *
-     * @return string
-     */
-    public function layout_form_begin()
-    {
-        if ($this->_layout_begin_template_file) {
-            return EEH_Template::locate_template(
-                $this->_layout_begin_template_file,
-                $this->template_args(),
-                true,
-                true
-            );
-        } else {
-            return parent::layout_form_begin();
-        }
-    }
-
-
-
-    /**
-     * If an input_template_file was provided upon construction, uses that to layout the input. Otherwise uses parent.
-     *
-     * @see EE_DIv_Per_Section_Layout::layout_input() for documentation
-     * @param EE_Form_Input_Base $input
-     * @return string
-     */
-    public function layout_input($input)
-    {
-        if ($this->_input_template_file) {
-            return EEH_Template::locate_template($this->_input_template_file, array('input' => $input), true, true);
-        }
-        return parent::layout_input($input);
-    }
-
-
-
-    /**
-     * If a subsection_template_file was provided upon construction, uses that to layout the subsection. Otherwise uses parent.
-     *
-     * @see EE_Div_Per_Section_Layout::layout_subsection() for documentation
-     * @param EE_Form_Section_Proper $form_section
-     * @return string
-     */
-    public function layout_subsection($form_section)
-    {
-        if ($this->_subsection_template_file) {
-            return EEH_Template::locate_template($this->_subsection_template_file, $this->template_args(), true, true);
-        }
-        return parent::layout_subsection($form_section);
-    }
-
-
-
-    /**
-     * closing div tag for a form
-     *
-     * @return string
-     */
-    public function layout_form_end()
-    {
-        if ($this->_layout_end_template_file) {
-            return EEH_Template::locate_template($this->_layout_end_template_file, $this->template_args(), true, true);
-        } else {
-            return parent::layout_form_end();
-        }
-    }
-
-
-
-    /**
-     * @param array $template_args
-     */
-    public function set_template_args($template_args = array())
-    {
-        $this->_template_args = $template_args;
-    }
-
-
-
-    /**
-     * @param array $template_args
-     */
-    public function add_template_args($template_args = array())
-    {
-        $this->_template_args = array_merge_recursive($this->_template_args, $template_args);
-    }
-
-
-
-    /**
-     * @return array
-     */
-    public function template_args()
-    {
-        foreach ($this->form_section()->subsections() as $subsection_name => $subsection) {
-            $subsection_name = self::prep_form_subsection_key_name($subsection_name);
-            if (strpos($subsection_name, '[') !== false) {
-                $sub_name = explode('[', $subsection_name);
-                $this->_template_args[ $sub_name[0] ][ rtrim($sub_name[1], ']') ] = $this->layout_subsection($subsection);
-            } else {
-                $this->_template_args[ $subsection_name ] = $this->layout_subsection($subsection);
-            }
-        }
-        //      d( $this->_template_args );
-        return $this->_template_args;
-    }
-
-
-
-    /**
-     * prep_form_section_key_name
-     *
-     * @access public
-     * @param string $subsection_name
-     * @return string
-     */
-    public static function prep_form_subsection_key_name($subsection_name = '')
-    {
-        $subsection_name = str_replace(array('-', ' '), array('', '_'), $subsection_name);
-        return is_numeric(substr($subsection_name, 0, 1)) ? 'form_' . $subsection_name : $subsection_name;
-    }
-
-
-
-    /**
-     * get_subform - just a wrapper for the above method
-     *
-     * @access public
-     * @param string $subsection_name
-     * @return string
-     */
-    public static function get_subform_name($subsection_name = '')
-    {
-        return EE_Template_Layout::prep_form_subsection_key_name($subsection_name);
-    }
+	protected $_layout_template_file       = null;
+
+	protected $_layout_begin_template_file = null;
+
+	protected $_input_template_file        = null;
+
+	protected $_subsection_template_file   = null;
+
+	protected $_layout_end_template_file   = null;
+
+	protected $_template_args              = array();
+
+
+
+	/**
+	 * @param array $template_options {
+	 * @type string $_layout_template_file
+	 * @type string $_begin_template_file
+	 * @type string $_input_template_file
+	 * @type string $_subsection_template_file
+	 * @type string $_end_template_file
+	 * @type array  $_template_args
+	 *                                }
+	 */
+	public function __construct($template_options = array())
+	{
+		// loop through incoming options
+		foreach ($template_options as $key => $value) {
+			// add underscore to $key to match property names
+			$_key = '_' . $key;
+			if (property_exists($this, $_key)) {
+				$this->{$_key} = $value;
+			}
+		}
+		parent::__construct();
+	}
+
+
+
+	/**
+	 * Also has the side effect of enqueuing any needed JS and CSS for
+	 * this form.
+	 * Creates all the HTML necessary for displaying this form, its inputs, and
+	 * proper subsections.
+	 * Returns the HTML
+	 *
+	 * @return string
+	 */
+	public function layout_form()
+	{
+		if ($this->_layout_template_file) {
+			return EEH_Template::locate_template($this->_layout_template_file, $this->template_args(), true, true);
+		} else {
+			return parent::layout_form();
+		}
+	}
+
+
+
+	/**
+	 * opening div tag for a form
+	 *
+	 * @return string
+	 */
+	public function layout_form_begin()
+	{
+		if ($this->_layout_begin_template_file) {
+			return EEH_Template::locate_template(
+				$this->_layout_begin_template_file,
+				$this->template_args(),
+				true,
+				true
+			);
+		} else {
+			return parent::layout_form_begin();
+		}
+	}
+
+
+
+	/**
+	 * If an input_template_file was provided upon construction, uses that to layout the input. Otherwise uses parent.
+	 *
+	 * @see EE_DIv_Per_Section_Layout::layout_input() for documentation
+	 * @param EE_Form_Input_Base $input
+	 * @return string
+	 */
+	public function layout_input($input)
+	{
+		if ($this->_input_template_file) {
+			return EEH_Template::locate_template($this->_input_template_file, array('input' => $input), true, true);
+		}
+		return parent::layout_input($input);
+	}
+
+
+
+	/**
+	 * If a subsection_template_file was provided upon construction, uses that to layout the subsection. Otherwise uses parent.
+	 *
+	 * @see EE_Div_Per_Section_Layout::layout_subsection() for documentation
+	 * @param EE_Form_Section_Proper $form_section
+	 * @return string
+	 */
+	public function layout_subsection($form_section)
+	{
+		if ($this->_subsection_template_file) {
+			return EEH_Template::locate_template($this->_subsection_template_file, $this->template_args(), true, true);
+		}
+		return parent::layout_subsection($form_section);
+	}
+
+
+
+	/**
+	 * closing div tag for a form
+	 *
+	 * @return string
+	 */
+	public function layout_form_end()
+	{
+		if ($this->_layout_end_template_file) {
+			return EEH_Template::locate_template($this->_layout_end_template_file, $this->template_args(), true, true);
+		} else {
+			return parent::layout_form_end();
+		}
+	}
+
+
+
+	/**
+	 * @param array $template_args
+	 */
+	public function set_template_args($template_args = array())
+	{
+		$this->_template_args = $template_args;
+	}
+
+
+
+	/**
+	 * @param array $template_args
+	 */
+	public function add_template_args($template_args = array())
+	{
+		$this->_template_args = array_merge_recursive($this->_template_args, $template_args);
+	}
+
+
+
+	/**
+	 * @return array
+	 */
+	public function template_args()
+	{
+		foreach ($this->form_section()->subsections() as $subsection_name => $subsection) {
+			$subsection_name = self::prep_form_subsection_key_name($subsection_name);
+			if (strpos($subsection_name, '[') !== false) {
+				$sub_name = explode('[', $subsection_name);
+				$this->_template_args[ $sub_name[0] ][ rtrim($sub_name[1], ']') ] = $this->layout_subsection($subsection);
+			} else {
+				$this->_template_args[ $subsection_name ] = $this->layout_subsection($subsection);
+			}
+		}
+		//      d( $this->_template_args );
+		return $this->_template_args;
+	}
+
+
+
+	/**
+	 * prep_form_section_key_name
+	 *
+	 * @access public
+	 * @param string $subsection_name
+	 * @return string
+	 */
+	public static function prep_form_subsection_key_name($subsection_name = '')
+	{
+		$subsection_name = str_replace(array('-', ' '), array('', '_'), $subsection_name);
+		return is_numeric(substr($subsection_name, 0, 1)) ? 'form_' . $subsection_name : $subsection_name;
+	}
+
+
+
+	/**
+	 * get_subform - just a wrapper for the above method
+	 *
+	 * @access public
+	 * @param string $subsection_name
+	 * @return string
+	 */
+	public static function get_subform_name($subsection_name = '')
+	{
+		return EE_Template_Layout::prep_form_subsection_key_name($subsection_name);
+	}
 }

caffeinated/admin/extend/registration_form/Extend_Registration_Form_Admin_Page.core.php

Indentation +1295 added lines, -1295 removed lines

@@ -14,1299 +14,1299 @@
 class Extend_Registration_Form_Admin_Page extends Registration_Form_Admin_Page
 {
 
-    /**
-     * @param bool $routing indicate whether we want to just load the object and handle routing or just load the object.
-     */
-    public function __construct($routing = true)
-    {
-        define('REGISTRATION_FORM_CAF_ADMIN', EE_CORE_CAF_ADMIN_EXTEND . 'registration_form' . DS);
-        define('REGISTRATION_FORM_CAF_ASSETS_PATH', REGISTRATION_FORM_CAF_ADMIN . 'assets' . DS);
-        define('REGISTRATION_FORM_CAF_ASSETS_URL', EE_CORE_CAF_ADMIN_EXTEND_URL . 'registration_form/assets/');
-        define('REGISTRATION_FORM_CAF_TEMPLATE_PATH', REGISTRATION_FORM_CAF_ADMIN . 'templates' . DS);
-        define('REGISTRATION_FORM_CAF_TEMPLATE_URL', EE_CORE_CAF_ADMIN_EXTEND_URL . 'registration_form/templates/');
-        parent::__construct($routing);
-    }
-
-
-    /**
-     * @return void
-     */
-    protected function _extend_page_config()
-    {
-        $this->_admin_base_path = REGISTRATION_FORM_CAF_ADMIN;
-        $qst_id = ! empty($this->_req_data['QST_ID']) && ! is_array($this->_req_data['QST_ID'])
-            ? $this->_req_data['QST_ID'] : 0;
-        $qsg_id = ! empty($this->_req_data['QSG_ID']) && ! is_array($this->_req_data['QSG_ID'])
-            ? $this->_req_data['QSG_ID'] : 0;
-
-        $new_page_routes = array(
-            'question_groups'    => array(
-                'func'       => '_question_groups_overview_list_table',
-                'capability' => 'ee_read_question_groups',
-            ),
-            'add_question'       => array(
-                'func'       => '_edit_question',
-                'capability' => 'ee_edit_questions',
-            ),
-            'insert_question'    => array(
-                'func'       => '_insert_or_update_question',
-                'args'       => array('new_question' => true),
-                'capability' => 'ee_edit_questions',
-                'noheader'   => true,
-            ),
-            'duplicate_question' => array(
-                'func'       => '_duplicate_question',
-                'capability' => 'ee_edit_questions',
-                'noheader'   => true,
-            ),
-            'trash_question'     => array(
-                'func'       => '_trash_question',
-                'capability' => 'ee_delete_question',
-                'obj_id'     => $qst_id,
-                'noheader'   => true,
-            ),
-
-            'restore_question' => array(
-                'func'       => '_trash_or_restore_questions',
-                'capability' => 'ee_delete_question',
-                'obj_id'     => $qst_id,
-                'args'       => array('trash' => false),
-                'noheader'   => true,
-            ),
-
-            'delete_question' => array(
-                'func'       => '_delete_question',
-                'capability' => 'ee_delete_question',
-                'obj_id'     => $qst_id,
-                'noheader'   => true,
-            ),
-
-            'trash_questions' => array(
-                'func'       => '_trash_or_restore_questions',
-                'capability' => 'ee_delete_questions',
-                'args'       => array('trash' => true),
-                'noheader'   => true,
-            ),
-
-            'restore_questions' => array(
-                'func'       => '_trash_or_restore_questions',
-                'capability' => 'ee_delete_questions',
-                'args'       => array('trash' => false),
-                'noheader'   => true,
-            ),
-
-            'delete_questions' => array(
-                'func'       => '_delete_questions',
-                'args'       => array(),
-                'capability' => 'ee_delete_questions',
-                'noheader'   => true,
-            ),
-
-            'add_question_group' => array(
-                'func'       => '_edit_question_group',
-                'capability' => 'ee_edit_question_groups',
-            ),
-
-            'edit_question_group' => array(
-                'func'       => '_edit_question_group',
-                'capability' => 'ee_edit_question_group',
-                'obj_id'     => $qsg_id,
-                'args'       => array('edit'),
-            ),
-
-            'delete_question_groups' => array(
-                'func'       => '_delete_question_groups',
-                'capability' => 'ee_delete_question_groups',
-                'noheader'   => true,
-            ),
-
-            'delete_question_group' => array(
-                'func'       => '_delete_question_groups',
-                'capability' => 'ee_delete_question_group',
-                'obj_id'     => $qsg_id,
-                'noheader'   => true,
-            ),
-
-            'trash_question_group' => array(
-                'func'       => '_trash_or_restore_question_groups',
-                'args'       => array('trash' => true),
-                'capability' => 'ee_delete_question_group',
-                'obj_id'     => $qsg_id,
-                'noheader'   => true,
-            ),
-
-            'restore_question_group' => array(
-                'func'       => '_trash_or_restore_question_groups',
-                'args'       => array('trash' => false),
-                'capability' => 'ee_delete_question_group',
-                'obj_id'     => $qsg_id,
-                'noheader'   => true,
-            ),
-
-            'insert_question_group' => array(
-                'func'       => '_insert_or_update_question_group',
-                'args'       => array('new_question_group' => true),
-                'capability' => 'ee_edit_question_groups',
-                'noheader'   => true,
-            ),
-
-            'update_question_group' => array(
-                'func'       => '_insert_or_update_question_group',
-                'args'       => array('new_question_group' => false),
-                'capability' => 'ee_edit_question_group',
-                'obj_id'     => $qsg_id,
-                'noheader'   => true,
-            ),
-
-            'trash_question_groups' => array(
-                'func'       => '_trash_or_restore_question_groups',
-                'args'       => array('trash' => true),
-                'capability' => 'ee_delete_question_groups',
-                'noheader'   => array('trash' => false),
-            ),
-
-            'restore_question_groups' => array(
-                'func'       => '_trash_or_restore_question_groups',
-                'args'       => array('trash' => false),
-                'capability' => 'ee_delete_question_groups',
-                'noheader'   => true,
-            ),
-
-
-            'espresso_update_question_group_order' => array(
-                'func'       => 'update_question_group_order',
-                'capability' => 'ee_edit_question_groups',
-                'noheader'   => true,
-            ),
-
-            'view_reg_form_settings' => array(
-                'func'       => '_reg_form_settings',
-                'capability' => 'manage_options',
-            ),
-
-            'update_reg_form_settings' => array(
-                'func'       => '_update_reg_form_settings',
-                'capability' => 'manage_options',
-                'noheader'   => true,
-            ),
-        );
-        $this->_page_routes = array_merge($this->_page_routes, $new_page_routes);
-
-        $new_page_config = array(
-
-            'question_groups' => array(
-                'nav'           => array(
-                    'label' => esc_html__('Question Groups', 'event_espresso'),
-                    'order' => 20,
-                ),
-                'list_table'    => 'Registration_Form_Question_Groups_Admin_List_Table',
-                'help_tabs'     => array(
-                    'registration_form_question_groups_help_tab'                           => array(
-                        'title'    => esc_html__('Question Groups', 'event_espresso'),
-                        'filename' => 'registration_form_question_groups',
-                    ),
-                    'registration_form_question_groups_table_column_headings_help_tab'     => array(
-                        'title'    => esc_html__('Question Groups Table Column Headings', 'event_espresso'),
-                        'filename' => 'registration_form_question_groups_table_column_headings',
-                    ),
-                    'registration_form_question_groups_views_bulk_actions_search_help_tab' => array(
-                        'title'    => esc_html__('Question Groups Views & Bulk Actions & Search', 'event_espresso'),
-                        'filename' => 'registration_form_question_groups_views_bulk_actions_search',
-                    ),
-                ),
-                'help_tour'     => array('Registration_Form_Question_Groups_Help_Tour'),
-                'metaboxes'     => $this->_default_espresso_metaboxes,
-                'require_nonce' => false,
-                'qtips'         => array(
-                    'EE_Registration_Form_Tips',
-                ),
-            ),
-
-            'add_question' => array(
-                'nav'           => array(
-                    'label'      => esc_html__('Add Question', 'event_espresso'),
-                    'order'      => 5,
-                    'persistent' => false,
-                ),
-                'metaboxes'     => array_merge($this->_default_espresso_metaboxes, array('_publish_post_box')),
-                'help_tabs'     => array(
-                    'registration_form_add_question_help_tab' => array(
-                        'title'    => esc_html__('Add Question', 'event_espresso'),
-                        'filename' => 'registration_form_add_question',
-                    ),
-                ),
-                'help_tour'     => array('Registration_Form_Add_Question_Help_Tour'),
-                'require_nonce' => false,
-            ),
-
-            'add_question_group' => array(
-                'nav'           => array(
-                    'label'      => esc_html__('Add Question Group', 'event_espresso'),
-                    'order'      => 5,
-                    'persistent' => false,
-                ),
-                'metaboxes'     => array_merge($this->_default_espresso_metaboxes, array('_publish_post_box')),
-                'help_tabs'     => array(
-                    'registration_form_add_question_group_help_tab' => array(
-                        'title'    => esc_html__('Add Question Group', 'event_espresso'),
-                        'filename' => 'registration_form_add_question_group',
-                    ),
-                ),
-                'help_tour'     => array('Registration_Form_Add_Question_Group_Help_Tour'),
-                'require_nonce' => false,
-            ),
-
-            'edit_question_group' => array(
-                'nav'           => array(
-                    'label'      => esc_html__('Edit Question Group', 'event_espresso'),
-                    'order'      => 5,
-                    'persistent' => false,
-                    'url'        => isset($this->_req_data['question_group_id']) ? add_query_arg(
-                        array('question_group_id' => $this->_req_data['question_group_id']),
-                        $this->_current_page_view_url
-                    ) : $this->_admin_base_url,
-                ),
-                'metaboxes'     => array_merge($this->_default_espresso_metaboxes, array('_publish_post_box')),
-                'help_tabs'     => array(
-                    'registration_form_edit_question_group_help_tab' => array(
-                        'title'    => esc_html__('Edit Question Group', 'event_espresso'),
-                        'filename' => 'registration_form_edit_question_group',
-                    ),
-                ),
-                'help_tour'     => array('Registration_Form_Edit_Question_Group_Help_Tour'),
-                'require_nonce' => false,
-            ),
-
-            'view_reg_form_settings' => array(
-                'nav'           => array(
-                    'label' => esc_html__('Reg Form Settings', 'event_espresso'),
-                    'order' => 40,
-                ),
-                'labels'        => array(
-                    'publishbox' => esc_html__('Update Settings', 'event_espresso'),
-                ),
-                'metaboxes'     => array_merge($this->_default_espresso_metaboxes, array('_publish_post_box')),
-                'help_tabs'     => array(
-                    'registration_form_reg_form_settings_help_tab' => array(
-                        'title'    => esc_html__('Registration Form Settings', 'event_espresso'),
-                        'filename' => 'registration_form_reg_form_settings',
-                    ),
-                ),
-                'help_tour'     => array('Registration_Form_Settings_Help_Tour'),
-                'require_nonce' => false,
-            ),
-
-        );
-        $this->_page_config = array_merge($this->_page_config, $new_page_config);
-
-        // change the list table we're going to use so it's the NEW list table!
-        $this->_page_config['default']['list_table'] = 'Extend_Registration_Form_Questions_Admin_List_Table';
-
-
-        // additional labels
-        $new_labels = array(
-            'add_question'          => esc_html__('Add New Question', 'event_espresso'),
-            'delete_question'       => esc_html__('Delete Question', 'event_espresso'),
-            'add_question_group'    => esc_html__('Add New Question Group', 'event_espresso'),
-            'edit_question_group'   => esc_html__('Edit Question Group', 'event_espresso'),
-            'delete_question_group' => esc_html__('Delete Question Group', 'event_espresso'),
-        );
-        $this->_labels['buttons'] = array_merge($this->_labels['buttons'], $new_labels);
-    }
-
-
-    /**
-     * @return void
-     */
-    protected function _ajax_hooks()
-    {
-        add_action('wp_ajax_espresso_update_question_group_order', array($this, 'update_question_group_order'));
-    }
-
-
-    /**
-     * @return void
-     */
-    public function load_scripts_styles_question_groups()
-    {
-        wp_enqueue_script('espresso_ajax_table_sorting');
-    }
-
-
-    /**
-     * @return void
-     */
-    public function load_scripts_styles_add_question_group()
-    {
-        $this->load_scripts_styles_forms();
-        $this->load_sortable_question_script();
-    }
-
-
-    /**
-     * @return void
-     */
-    public function load_scripts_styles_edit_question_group()
-    {
-        $this->load_scripts_styles_forms();
-        $this->load_sortable_question_script();
-    }
-
-
-    /**
-     * registers and enqueues script for questions
-     *
-     * @return void
-     */
-    public function load_sortable_question_script()
-    {
-        wp_register_script(
-            'ee-question-sortable',
-            REGISTRATION_FORM_CAF_ASSETS_URL . 'ee_question_order.js',
-            array('jquery-ui-sortable'),
-            EVENT_ESPRESSO_VERSION,
-            true
-        );
-        wp_enqueue_script('ee-question-sortable');
-    }
-
-
-    /**
-     * @return void
-     */
-    protected function _set_list_table_views_default()
-    {
-        $this->_views = array(
-            'all' => array(
-                'slug'        => 'all',
-                'label'       => esc_html__('View All Questions', 'event_espresso'),
-                'count'       => 0,
-                'bulk_action' => array(
-                    'trash_questions' => esc_html__('Trash', 'event_espresso'),
-                ),
-            ),
-        );
-
-        if (EE_Registry::instance()->CAP->current_user_can(
-            'ee_delete_questions',
-            'espresso_registration_form_trash_questions'
-        )
-        ) {
-            $this->_views['trash'] = array(
-                'slug'        => 'trash',
-                'label'       => esc_html__('Trash', 'event_espresso'),
-                'count'       => 0,
-                'bulk_action' => array(
-                    'delete_questions'  => esc_html__('Delete Permanently', 'event_espresso'),
-                    'restore_questions' => esc_html__('Restore', 'event_espresso'),
-                ),
-            );
-        }
-    }
-
-
-    /**
-     * @return void
-     */
-    protected function _set_list_table_views_question_groups()
-    {
-        $this->_views = array(
-            'all' => array(
-                'slug'        => 'all',
-                'label'       => esc_html__('All', 'event_espresso'),
-                'count'       => 0,
-                'bulk_action' => array(
-                    'trash_question_groups' => esc_html__('Trash', 'event_espresso'),
-                ),
-            ),
-        );
-
-        if (EE_Registry::instance()->CAP->current_user_can(
-            'ee_delete_question_groups',
-            'espresso_registration_form_trash_question_groups'
-        )
-        ) {
-            $this->_views['trash'] = array(
-                'slug'        => 'trash',
-                'label'       => esc_html__('Trash', 'event_espresso'),
-                'count'       => 0,
-                'bulk_action' => array(
-                    'delete_question_groups'  => esc_html__('Delete Permanently', 'event_espresso'),
-                    'restore_question_groups' => esc_html__('Restore', 'event_espresso'),
-                ),
-            );
-        }
-    }
-
-
-    /**
-     * @return void
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     */
-    protected function _questions_overview_list_table()
-    {
-        $this->_admin_page_title .= ' ' . $this->get_action_link_or_button(
-            'add_question',
-            'add_question',
-            array(),
-            'add-new-h2'
-        );
-        parent::_questions_overview_list_table();
-    }
-
-
-    /**
-     * @return void
-     * @throws DomainException
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     */
-    protected function _question_groups_overview_list_table()
-    {
-        $this->_search_btn_label = esc_html__('Question Groups', 'event_espresso');
-        $this->_admin_page_title .= ' ' . $this->get_action_link_or_button(
-            'add_question_group',
-            'add_question_group',
-            array(),
-            'add-new-h2'
-        );
-        $this->display_admin_list_table_page_with_sidebar();
-    }
-
-
-    /**
-     * @return void
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     */
-    protected function _delete_question()
-    {
-        $success = $this->_delete_items($this->_question_model);
-        $this->_redirect_after_action(
-            $success,
-            $this->_question_model->item_name($success),
-            'deleted',
-            array('action' => 'default', 'status' => 'all')
-        );
-    }
-
-
-    /**
-     * @return void
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     */
-    protected function _delete_questions()
-    {
-        $success = $this->_delete_items($this->_question_model);
-        $this->_redirect_after_action(
-            $success,
-            $this->_question_model->item_name($success),
-            'deleted permanently',
-            array('action' => 'default', 'status' => 'trash')
-        );
-    }
-
-
-    /**
-     * Performs the deletion of a single or multiple questions or question groups.
-     *
-     * @param EEM_Soft_Delete_Base $model
-     * @return int number of items deleted permanently
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     */
-    private function _delete_items(EEM_Soft_Delete_Base $model)
-    {
-        $success = 0;
-        do_action('AHEE_log', __FILE__, __FUNCTION__, '');
-        if (! empty($this->_req_data['checkbox']) && is_array($this->_req_data['checkbox'])) {
-            // if array has more than one element than success message should be plural
-            $success = count($this->_req_data['checkbox']) > 1 ? 2 : 1;
-            // cycle thru bulk action checkboxes
-            while (list($ID, $value) = each($this->_req_data['checkbox'])) {
-                if (! $this->_delete_item($ID, $model)) {
-                    $success = 0;
-                }
-            }
-        } elseif (! empty($this->_req_data['QSG_ID'])) {
-            $success = $this->_delete_item($this->_req_data['QSG_ID'], $model);
-        } elseif (! empty($this->_req_data['QST_ID'])) {
-            $success = $this->_delete_item($this->_req_data['QST_ID'], $model);
-        } else {
-            EE_Error::add_error(
-                sprintf(
-                    esc_html__(
-                        "No Questions or Question Groups were selected for deleting. This error usually shows when you've attempted to delete via bulk action but there were no selections.",
-                        "event_espresso"
-                    )
-                ),
-                __FILE__,
-                __FUNCTION__,
-                __LINE__
-            );
-        }
-        return $success;
-    }
-
-
-    /**
-     * Deletes the specified question (and its associated question options) or question group
-     *
-     * @param int                  $id
-     * @param EEM_Soft_Delete_Base $model
-     * @return boolean
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     */
-    protected function _delete_item($id, $model)
-    {
-        if ($model instanceof EEM_Question) {
-            EEM_Question_Option::instance()->delete_permanently(array(array('QST_ID' => absint($id))));
-        }
-        return $model->delete_permanently_by_ID(absint($id));
-    }
-
-
-    /******************************    QUESTION GROUPS    ******************************/
-
-
-    /**
-     * @param string $type
-     * @return void
-     * @throws DomainException
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     */
-    protected function _edit_question_group($type = 'add')
-    {
-        do_action('AHEE_log', __FILE__, __FUNCTION__, '');
-        $ID = isset($this->_req_data['QSG_ID']) && ! empty($this->_req_data['QSG_ID'])
-            ? absint($this->_req_data['QSG_ID'])
-            : false;
-
-        switch ($this->_req_action) {
-            case 'add_question_group':
-                $this->_admin_page_title = esc_html__('Add Question Group', 'event_espresso');
-                break;
-            case 'edit_question_group':
-                $this->_admin_page_title = esc_html__('Edit Question Group', 'event_espresso');
-                break;
-            default:
-                $this->_admin_page_title = ucwords(str_replace('_', ' ', $this->_req_action));
-        }
-        // add ID to title if editing
-        $this->_admin_page_title = $ID ? $this->_admin_page_title . ' # ' . $ID : $this->_admin_page_title;
-        if ($ID) {
-            /** @var EE_Question_Group $questionGroup */
-            $questionGroup = $this->_question_group_model->get_one_by_ID($ID);
-            $additional_hidden_fields = array('QSG_ID' => array('type' => 'hidden', 'value' => $ID));
-            $this->_set_add_edit_form_tags('update_question_group', $additional_hidden_fields);
-        } else {
-            /** @var EE_Question_Group $questionGroup */
-            $questionGroup = EEM_Question_Group::instance()->create_default_object();
-            $questionGroup->set_order_to_latest();
-            $this->_set_add_edit_form_tags('insert_question_group');
-        }
-        $this->_template_args['values'] = $this->_yes_no_values;
-        $this->_template_args['all_questions'] = $questionGroup->questions_in_and_not_in_group();
-        $this->_template_args['QSG_ID'] = $ID ? $ID : true;
-        $this->_template_args['question_group'] = $questionGroup;
-
-        $redirect_URL = add_query_arg(array('action' => 'question_groups'), $this->_admin_base_url);
-        $this->_set_publish_post_box_vars('id', $ID, false, $redirect_URL);
-        $this->_template_args['admin_page_content'] = EEH_Template::display_template(
-            REGISTRATION_FORM_CAF_TEMPLATE_PATH . 'question_groups_main_meta_box.template.php',
-            $this->_template_args,
-            true
-        );
-
-        // the details template wrapper
-        $this->display_admin_page_with_sidebar();
-    }
-
-
-    /**
-     * @return void
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     */
-    protected function _delete_question_groups()
-    {
-        $success = $this->_delete_items($this->_question_group_model);
-        $this->_redirect_after_action(
-            $success,
-            $this->_question_group_model->item_name($success),
-            'deleted permanently',
-            array('action' => 'question_groups', 'status' => 'trash')
-        );
-    }
-
-
-    /**
-     * @param bool $new_question_group
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     */
-    protected function _insert_or_update_question_group($new_question_group = true)
-    {
-        do_action('AHEE_log', __FILE__, __FUNCTION__, '');
-        $set_column_values = $this->_set_column_values_for($this->_question_group_model);
-        if ($new_question_group) {
-            $QSG_ID = $this->_question_group_model->insert($set_column_values);
-            $success = $QSG_ID ? 1 : 0;
-        } else {
-            $QSG_ID = absint($this->_req_data['QSG_ID']);
-            unset($set_column_values['QSG_ID']);
-            $success = $this->_question_group_model->update($set_column_values, array(array('QSG_ID' => $QSG_ID)));
-        }
-        $phone_question_id = EEM_Question::instance()->get_Question_ID_from_system_string(
-            EEM_Attendee::system_question_phone
-        );
-        // update the existing related questions
-        // BUT FIRST...  delete the phone question from the Question_Group_Question
-        // if it is being added to this question group (therefore removed from the existing group)
-        if (isset($this->_req_data['questions'], $this->_req_data['questions'][ $phone_question_id ])) {
-            // delete where QST ID = system phone question ID and Question Group ID is NOT this group
-            EEM_Question_Group_Question::instance()->delete(
-                array(
-                    array(
-                        'QST_ID' => $phone_question_id,
-                        'QSG_ID' => array('!=', $QSG_ID),
-                    ),
-                )
-            );
-        }
-        /** @type EE_Question_Group $question_group */
-        $question_group = $this->_question_group_model->get_one_by_ID($QSG_ID);
-        $questions = $question_group->questions();
-        // make sure system phone question is added to list of questions for this group
-        if (! isset($questions[ $phone_question_id ])) {
-            $questions[ $phone_question_id ] = EEM_Question::instance()->get_one_by_ID($phone_question_id);
-        }
-
-        foreach ($questions as $question_ID => $question) {
-            // first we always check for order.
-            if (! empty($this->_req_data['question_orders'][ $question_ID ])) {
-                // update question order
-                $question_group->update_question_order(
-                    $question_ID,
-                    $this->_req_data['question_orders'][ $question_ID ]
-                );
-            }
-
-            // then we always check if adding or removing.
-            if (isset($this->_req_data['questions'], $this->_req_data['questions'][ $question_ID ])) {
-                $question_group->add_question($question_ID);
-            } else {
-                // not found, remove it (but only if not a system question for the personal group
-                // with the exception of lname system question - we allow removal of it)
-                if (in_array(
-                    $question->system_ID(),
-                    EEM_Question::instance()->required_system_questions_in_system_question_group(
-                        $question_group->system_group()
-                    )
-                )) {
-                    continue;
-                } else {
-                    $question_group->remove_question($question_ID);
-                }
-            }
-        }
-        // save new related questions
-        if (isset($this->_req_data['questions'])) {
-            foreach ($this->_req_data['questions'] as $QST_ID) {
-                $question_group->add_question($QST_ID);
-                if (isset($this->_req_data['question_orders'][ $QST_ID ])) {
-                    $question_group->update_question_order($QST_ID, $this->_req_data['question_orders'][ $QST_ID ]);
-                }
-            }
-        }
-
-        if ($success !== false) {
-            $msg = $new_question_group
-                ? sprintf(
-                    esc_html__('The %s has been created', 'event_espresso'),
-                    $this->_question_group_model->item_name()
-                )
-                : sprintf(
-                    esc_html__(
-                        'The %s has been updated',
-                        'event_espresso'
-                    ),
-                    $this->_question_group_model->item_name()
-                );
-            EE_Error::add_success($msg);
-        }
-        $this->_redirect_after_action(
-            false,
-            '',
-            '',
-            array('action' => 'edit_question_group', 'QSG_ID' => $QSG_ID),
-            true
-        );
-    }
-
-
-    /**
-     * duplicates a question and all its question options and redirects to the new question.
-     *
-     * @return void
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws ReflectionException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     */
-    public function _duplicate_question()
-    {
-        $question_ID = (int) $this->_req_data['QST_ID'];
-        $question = EEM_Question::instance()->get_one_by_ID($question_ID);
-        if ($question instanceof EE_Question) {
-            $new_question = $question->duplicate();
-            if ($new_question instanceof EE_Question) {
-                $this->_redirect_after_action(
-                    true,
-                    esc_html__('Question', 'event_espresso'),
-                    esc_html__('Duplicated', 'event_espresso'),
-                    array('action' => 'edit_question', 'QST_ID' => $new_question->ID()),
-                    true
-                );
-            } else {
-                global $wpdb;
-                EE_Error::add_error(
-                    sprintf(
-                        esc_html__(
-                            'Could not duplicate question with ID %1$d because: %2$s',
-                            'event_espresso'
-                        ),
-                        $question_ID,
-                        $wpdb->last_error
-                    ),
-                    __FILE__,
-                    __FUNCTION__,
-                    __LINE__
-                );
-                $this->_redirect_after_action(false, '', '', array('action' => 'default'), false);
-            }
-        } else {
-            EE_Error::add_error(
-                sprintf(
-                    esc_html__(
-                        'Could not duplicate question with ID %d because it didn\'t exist!',
-                        'event_espresso'
-                    ),
-                    $question_ID
-                ),
-                __FILE__,
-                __FUNCTION__,
-                __LINE__
-            );
-            $this->_redirect_after_action(false, '', '', array('action' => 'default'), false);
-        }
-    }
-
-
-    /**
-     * @param bool $trash
-     * @throws EE_Error
-     */
-    protected function _trash_or_restore_question_groups($trash = true)
-    {
-        $this->_trash_or_restore_items($this->_question_group_model, $trash);
-    }
-
-
-    /**
-     *_trash_question
-     *
-     * @return void
-     * @throws EE_Error
-     */
-    protected function _trash_question()
-    {
-        $success = $this->_question_model->delete_by_ID((int) $this->_req_data['QST_ID']);
-        $query_args = array('action' => 'default', 'status' => 'all');
-        $this->_redirect_after_action($success, $this->_question_model->item_name($success), 'trashed', $query_args);
-    }
-
-
-    /**
-     * @param bool $trash
-     * @throws EE_Error
-     */
-    protected function _trash_or_restore_questions($trash = true)
-    {
-        $this->_trash_or_restore_items($this->_question_model, $trash);
-    }
-
-
-    /**
-     * Internally used to delete or restore items, using the request data. Meant to be
-     * flexible between question or question groups
-     *
-     * @param EEM_Soft_Delete_Base $model
-     * @param boolean              $trash whether to trash or restore
-     * @throws EE_Error
-     */
-    private function _trash_or_restore_items(EEM_Soft_Delete_Base $model, $trash = true)
-    {
-
-        do_action('AHEE_log', __FILE__, __FUNCTION__, '');
-
-        $success = 1;
-        // Checkboxes
-        // echo "trash $trash";
-        // var_dump($this->_req_data['checkbox']);die;
-        if (isset($this->_req_data['checkbox'])) {
-            if (! empty($this->_req_data['checkbox']) && is_array($this->_req_data['checkbox'])) {
-                // if array has more than one element than success message should be plural
-                $success = count($this->_req_data['checkbox']) > 1 ? 2 : 1;
-                // cycle thru bulk action checkboxes
-                while (list($ID, $value) = each($this->_req_data['checkbox'])) {
-                    if (! $model->delete_or_restore_by_ID($trash, absint($ID))) {
-                        $success = 0;
-                    }
-                }
-            } else {
-                // grab single id and delete
-                $ID = absint($this->_req_data['checkbox']);
-                if (! $model->delete_or_restore_by_ID($trash, $ID)) {
-                    $success = 0;
-                }
-            }
-        } else {
-            // delete via trash link
-            // grab single id and delete
-            $ID = absint($this->_req_data[ $model->primary_key_name() ]);
-            if (! $model->delete_or_restore_by_ID($trash, $ID)) {
-                $success = 0;
-            }
-        }
-
-
-        $action = $model instanceof EEM_Question ? 'default' : 'question_groups';// strtolower( $model->item_name(2) );
-        // echo "action :$action";
-        // $action = 'questions' ? 'default' : $action;
-        if ($trash) {
-            $action_desc = 'trashed';
-            $status = 'trash';
-        } else {
-            $action_desc = 'restored';
-            $status = 'all';
-        }
-        $this->_redirect_after_action(
-            $success,
-            $model->item_name($success),
-            $action_desc,
-            array('action' => $action, 'status' => $status)
-        );
-    }
-
-
-    /**
-     * @param            $per_page
-     * @param int        $current_page
-     * @param bool|false $count
-     * @return EE_Soft_Delete_Base_Class[]|int
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     */
-    public function get_trashed_questions($per_page, $current_page = 1, $count = false)
-    {
-        $query_params = $this->get_query_params(EEM_Question::instance(), $per_page, $current_page);
-
-        if ($count) {
-            // note: this a subclass of EEM_Soft_Delete_Base, so this is actually only getting non-trashed items
-            $where = isset($query_params[0]) ? array($query_params[0]) : array();
-            $results = $this->_question_model->count_deleted($where);
-        } else {
-            // note: this a subclass of EEM_Soft_Delete_Base, so this is actually only getting non-trashed items
-            $results = $this->_question_model->get_all_deleted($query_params);
-        }
-        return $results;
-    }
-
-
-    /**
-     * @param            $per_page
-     * @param int        $current_page
-     * @param bool|false $count
-     * @return EE_Soft_Delete_Base_Class[]|int
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     */
-    public function get_question_groups($per_page, $current_page = 1, $count = false)
-    {
-        $questionGroupModel = EEM_Question_Group::instance();
-        $query_params = $this->get_query_params($questionGroupModel, $per_page, $current_page);
-        if ($count) {
-            $where = isset($query_params[0]) ? array($query_params[0]) : array();
-            $results = $questionGroupModel->count($where);
-        } else {
-            $results = $questionGroupModel->get_all($query_params);
-        }
-        return $results;
-    }
-
-
-    /**
-     * @param      $per_page
-     * @param int  $current_page
-     * @param bool $count
-     * @return EE_Soft_Delete_Base_Class[]|int
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     */
-    public function get_trashed_question_groups($per_page, $current_page = 1, $count = false)
-    {
-        $questionGroupModel = EEM_Question_Group::instance();
-        $query_params = $this->get_query_params($questionGroupModel, $per_page, $current_page);
-        if ($count) {
-            $where = isset($query_params[0]) ? array($query_params[0]) : array();
-            $query_params['limit'] = null;
-            $results = $questionGroupModel->count_deleted($where);
-        } else {
-            $results = $questionGroupModel->get_all_deleted($query_params);
-        }
-        return $results;
-    }
-
-
-    /**
-     * method for performing updates to question order
-     *
-     * @return void results array
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     */
-    public function update_question_group_order()
-    {
-
-        $success = esc_html__('Question group order was updated successfully.', 'event_espresso');
-
-        // grab our row IDs
-        $row_ids = isset($this->_req_data['row_ids']) && ! empty($this->_req_data['row_ids'])
-            ? explode(',', rtrim($this->_req_data['row_ids'], ','))
-            : array();
-
-        $perpage = ! empty($this->_req_data['perpage'])
-            ? (int) $this->_req_data['perpage']
-            : null;
-        $curpage = ! empty($this->_req_data['curpage'])
-            ? (int) $this->_req_data['curpage']
-            : null;
-
-        if (! empty($row_ids)) {
-            // figure out where we start the row_id count at for the current page.
-            $qsgcount = empty($curpage) ? 0 : ($curpage - 1) * $perpage;
-
-            $row_count = count($row_ids);
-            for ($i = 0; $i < $row_count; $i++) {
-                // Update the questions when re-ordering
-                $updated = EEM_Question_Group::instance()->update(
-                    array('QSG_order' => $qsgcount),
-                    array(array('QSG_ID' => $row_ids[ $i ]))
-                );
-                if ($updated === false) {
-                    $success = false;
-                }
-                $qsgcount++;
-            }
-        } else {
-            $success = false;
-        }
-
-        $errors = ! $success
-            ? esc_html__('An error occurred. The question group order was not updated.', 'event_espresso')
-            : false;
-
-        echo wp_json_encode(array('return_data' => false, 'success' => $success, 'errors' => $errors));
-        die();
-    }
-
-
-
-    /***************************************       REGISTRATION SETTINGS       ***************************************/
-
-
-    /**
-     * @throws DomainException
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     */
-    protected function _reg_form_settings()
-    {
-        $this->_template_args['values'] = $this->_yes_no_values;
-        add_action(
-            'AHEE__Extend_Registration_Form_Admin_Page___reg_form_settings_template',
-            array($this, 'email_validation_settings_form'),
-            2
-        );
-        $this->_template_args = (array) apply_filters(
-            'FHEE__Extend_Registration_Form_Admin_Page___reg_form_settings___template_args',
-            $this->_template_args
-        );
-        $this->_set_add_edit_form_tags('update_reg_form_settings');
-        $this->_set_publish_post_box_vars(null, false, false, null, false);
-        $this->_template_args['admin_page_content'] = EEH_Template::display_template(
-            REGISTRATION_FORM_CAF_TEMPLATE_PATH . 'reg_form_settings.template.php',
-            $this->_template_args,
-            true
-        );
-        $this->display_admin_page_with_sidebar();
-    }
-
-
-    /**
-     * @return void
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws ReflectionException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     */
-    protected function _update_reg_form_settings()
-    {
-        EE_Registry::instance()->CFG->registration = $this->update_email_validation_settings_form(
-            EE_Registry::instance()->CFG->registration
-        );
-        EE_Registry::instance()->CFG->registration = apply_filters(
-            'FHEE__Extend_Registration_Form_Admin_Page___update_reg_form_settings__CFG_registration',
-            EE_Registry::instance()->CFG->registration
-        );
-        $success = $this->_update_espresso_configuration(
-            esc_html__('Registration Form Options', 'event_espresso'),
-            EE_Registry::instance()->CFG,
-            __FILE__,
-            __FUNCTION__,
-            __LINE__
-        );
-        $this->_redirect_after_action(
-            $success,
-            esc_html__('Registration Form Options', 'event_espresso'),
-            'updated',
-            array('action' => 'view_reg_form_settings')
-        );
-    }
-
-
-    /**
-     * @return void
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     */
-    public function email_validation_settings_form()
-    {
-        echo $this->_email_validation_settings_form()->get_html();
-    }
-
-
-    /**
-     * _email_validation_settings_form
-     *
-     * @access protected
-     * @return EE_Form_Section_Proper
-     * @throws \EE_Error
-     */
-    protected function _email_validation_settings_form()
-    {
-        return new EE_Form_Section_Proper(
-            array(
-                'name'            => 'email_validation_settings',
-                'html_id'         => 'email_validation_settings',
-                'layout_strategy' => new EE_Admin_Two_Column_Layout(),
-                'subsections'     => apply_filters(
-                    'FHEE__Extend_Registration_Form_Admin_Page___email_validation_settings_form__form_subsections',
-                    array(
-                        'email_validation_hdr'   => new EE_Form_Section_HTML(
-                            EEH_HTML::h2(esc_html__('Email Validation Settings', 'event_espresso'))
-                        ),
-                        'email_validation_level' => new EE_Select_Input(
-                            array(
-                                'basic'      => esc_html__('Basic', 'event_espresso'),
-                                'wp_default' => esc_html__('WordPress Default', 'event_espresso'),
-                                'i18n'       => esc_html__('International', 'event_espresso'),
-                                'i18n_dns'   => esc_html__('International + DNS Check', 'event_espresso'),
-                            ),
-                            array(
-                                'html_label_text' => esc_html__('Email Validation Level', 'event_espresso')
-                                                     . EEH_Template::get_help_tab_link('email_validation_info'),
-                                'html_help_text'  => esc_html__(
-                                    'These levels range from basic validation ( ie: text@text.text ) to more advanced checks against international email addresses (ie: üñîçøðé@example.com ) with additional MX and A record checks to confirm the domain actually exists. More information on on each level can be found within the help section.',
-                                    'event_espresso'
-                                ),
-                                'default'         => isset(
-                                    EE_Registry::instance()->CFG->registration->email_validation_level
-                                )
-                                    ? EE_Registry::instance()->CFG->registration->email_validation_level
-                                    : 'wp_default',
-                                'required'        => false,
-                            )
-                        ),
-                    )
-                ),
-            )
-        );
-    }
-
-
-    /**
-     * @param EE_Registration_Config $EE_Registration_Config
-     * @return EE_Registration_Config
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws ReflectionException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     */
-    public function update_email_validation_settings_form(EE_Registration_Config $EE_Registration_Config)
-    {
-        $prev_email_validation_level = $EE_Registration_Config->email_validation_level;
-        try {
-            $email_validation_settings_form = $this->_email_validation_settings_form();
-            // if not displaying a form, then check for form submission
-            if ($email_validation_settings_form->was_submitted()) {
-                // capture form data
-                $email_validation_settings_form->receive_form_submission();
-                // validate form data
-                if ($email_validation_settings_form->is_valid()) {
-                    // grab validated data from form
-                    $valid_data = $email_validation_settings_form->valid_data();
-                    if (isset($valid_data['email_validation_level'])) {
-                        $email_validation_level = $valid_data['email_validation_level'];
-                        // now if they want to use international email addresses
-                        if ($email_validation_level === 'i18n' || $email_validation_level === 'i18n_dns') {
-                            // in case we need to reset their email validation level,
-                            // make sure that the previous value wasn't already set to one of the i18n options.
-                            if ($prev_email_validation_level === 'i18n' || $prev_email_validation_level === 'i18n_dns') {
-                                // if so, then reset it back to "basic" since that is the only other option that,
-                                // despite offering poor validation, supports i18n email addresses
-                                $prev_email_validation_level = 'basic';
-                            }
-                            // confirm our i18n email validation will work on the server
-                            if (! $this->_verify_pcre_support($EE_Registration_Config, $email_validation_level)) {
-                                // or reset email validation level to previous value
-                                $email_validation_level = $prev_email_validation_level;
-                            }
-                        }
-                        $EE_Registration_Config->email_validation_level = $email_validation_level;
-                    } else {
-                        EE_Error::add_error(
-                            esc_html__(
-                                'Invalid or missing Email Validation settings. Please refresh the form and try again.',
-                                'event_espresso'
-                            ),
-                            __FILE__,
-                            __FUNCTION__,
-                            __LINE__
-                        );
-                    }
-                } else {
-                    if ($email_validation_settings_form->submission_error_message() !== '') {
-                        EE_Error::add_error(
-                            $email_validation_settings_form->submission_error_message(),
-                            __FILE__,
-                            __FUNCTION__,
-                            __LINE__
-                        );
-                    }
-                }
-            }
-        } catch (EE_Error $e) {
-            $e->get_error();
-        }
-        return $EE_Registration_Config;
-    }
-
-
-    /**
-     * confirms that the server's PHP version has the PCRE module enabled,
-     * and that the PCRE version works with our i18n email validation
-     *
-     * @param EE_Registration_Config $EE_Registration_Config
-     * @param string                 $email_validation_level
-     * @return bool
-     */
-    private function _verify_pcre_support(EE_Registration_Config $EE_Registration_Config, $email_validation_level)
-    {
-        // first check that PCRE is enabled
-        if (! defined('PREG_BAD_UTF8_ERROR')) {
-            EE_Error::add_error(
-                sprintf(
-                    esc_html__(
-                        'We\'re sorry, but it appears that your server\'s version of PHP was not compiled with PCRE unicode support.%1$sPlease contact your hosting company and ask them whether the PCRE compiled with your version of PHP on your server can be been built with the "--enable-unicode-properties" and "--enable-utf8" configuration switches to enable more complex regex expressions.%1$sIf they are unable, or unwilling to do so, then your server will not support international email addresses using UTF-8 unicode characters. This means you will either have to lower your email validation level to "Basic" or "WordPress Default", or switch to a hosting company that has/can enable PCRE unicode support on the server.',
-                        'event_espresso'
-                    ),
-                    '<br />'
-                ),
-                __FILE__,
-                __FUNCTION__,
-                __LINE__
-            );
-            return false;
-        } else {
-            // PCRE support is enabled, but let's still
-            // perform a test to see if the server will support it.
-            // but first, save the updated validation level to the config,
-            // so that the validation strategy picks it up.
-            // this will get bumped back down if it doesn't work
-            $EE_Registration_Config->email_validation_level = $email_validation_level;
-            try {
-                $email_validator = new EE_Email_Validation_Strategy();
-                $i18n_email_address = apply_filters(
-                    'FHEE__Extend_Registration_Form_Admin_Page__update_email_validation_settings_form__i18n_email_address',
-                    'jägerjürgen@deutschland.com'
-                );
-                $email_validator->validate($i18n_email_address);
-            } catch (Exception $e) {
-                EE_Error::add_error(
-                    sprintf(
-                        esc_html__(
-                            'We\'re sorry, but it appears that your server\'s configuration will not support the "International" or "International + DNS Check" email validation levels.%1$sTo correct this issue, please consult with your hosting company regarding your server\'s PCRE settings.%1$sIt is recommended that your PHP version be configured to use PCRE 8.10 or newer.%1$sMore information regarding PCRE versions and installation can be found here: %2$s',
-                            'event_espresso'
-                        ),
-                        '<br />',
-                        '<a href="http://php.net/manual/en/pcre.installation.php" target="_blank">http://php.net/manual/en/pcre.installation.php</a>'
-                    ),
-                    __FILE__,
-                    __FUNCTION__,
-                    __LINE__
-                );
-                return false;
-            }
-        }
-        return true;
-    }
+	/**
+	 * @param bool $routing indicate whether we want to just load the object and handle routing or just load the object.
+	 */
+	public function __construct($routing = true)
+	{
+		define('REGISTRATION_FORM_CAF_ADMIN', EE_CORE_CAF_ADMIN_EXTEND . 'registration_form' . DS);
+		define('REGISTRATION_FORM_CAF_ASSETS_PATH', REGISTRATION_FORM_CAF_ADMIN . 'assets' . DS);
+		define('REGISTRATION_FORM_CAF_ASSETS_URL', EE_CORE_CAF_ADMIN_EXTEND_URL . 'registration_form/assets/');
+		define('REGISTRATION_FORM_CAF_TEMPLATE_PATH', REGISTRATION_FORM_CAF_ADMIN . 'templates' . DS);
+		define('REGISTRATION_FORM_CAF_TEMPLATE_URL', EE_CORE_CAF_ADMIN_EXTEND_URL . 'registration_form/templates/');
+		parent::__construct($routing);
+	}
+
+
+	/**
+	 * @return void
+	 */
+	protected function _extend_page_config()
+	{
+		$this->_admin_base_path = REGISTRATION_FORM_CAF_ADMIN;
+		$qst_id = ! empty($this->_req_data['QST_ID']) && ! is_array($this->_req_data['QST_ID'])
+			? $this->_req_data['QST_ID'] : 0;
+		$qsg_id = ! empty($this->_req_data['QSG_ID']) && ! is_array($this->_req_data['QSG_ID'])
+			? $this->_req_data['QSG_ID'] : 0;
+
+		$new_page_routes = array(
+			'question_groups'    => array(
+				'func'       => '_question_groups_overview_list_table',
+				'capability' => 'ee_read_question_groups',
+			),
+			'add_question'       => array(
+				'func'       => '_edit_question',
+				'capability' => 'ee_edit_questions',
+			),
+			'insert_question'    => array(
+				'func'       => '_insert_or_update_question',
+				'args'       => array('new_question' => true),
+				'capability' => 'ee_edit_questions',
+				'noheader'   => true,
+			),
+			'duplicate_question' => array(
+				'func'       => '_duplicate_question',
+				'capability' => 'ee_edit_questions',
+				'noheader'   => true,
+			),
+			'trash_question'     => array(
+				'func'       => '_trash_question',
+				'capability' => 'ee_delete_question',
+				'obj_id'     => $qst_id,
+				'noheader'   => true,
+			),
+
+			'restore_question' => array(
+				'func'       => '_trash_or_restore_questions',
+				'capability' => 'ee_delete_question',
+				'obj_id'     => $qst_id,
+				'args'       => array('trash' => false),
+				'noheader'   => true,
+			),
+
+			'delete_question' => array(
+				'func'       => '_delete_question',
+				'capability' => 'ee_delete_question',
+				'obj_id'     => $qst_id,
+				'noheader'   => true,
+			),
+
+			'trash_questions' => array(
+				'func'       => '_trash_or_restore_questions',
+				'capability' => 'ee_delete_questions',
+				'args'       => array('trash' => true),
+				'noheader'   => true,
+			),
+
+			'restore_questions' => array(
+				'func'       => '_trash_or_restore_questions',
+				'capability' => 'ee_delete_questions',
+				'args'       => array('trash' => false),
+				'noheader'   => true,
+			),
+
+			'delete_questions' => array(
+				'func'       => '_delete_questions',
+				'args'       => array(),
+				'capability' => 'ee_delete_questions',
+				'noheader'   => true,
+			),
+
+			'add_question_group' => array(
+				'func'       => '_edit_question_group',
+				'capability' => 'ee_edit_question_groups',
+			),
+
+			'edit_question_group' => array(
+				'func'       => '_edit_question_group',
+				'capability' => 'ee_edit_question_group',
+				'obj_id'     => $qsg_id,
+				'args'       => array('edit'),
+			),
+
+			'delete_question_groups' => array(
+				'func'       => '_delete_question_groups',
+				'capability' => 'ee_delete_question_groups',
+				'noheader'   => true,
+			),
+
+			'delete_question_group' => array(
+				'func'       => '_delete_question_groups',
+				'capability' => 'ee_delete_question_group',
+				'obj_id'     => $qsg_id,
+				'noheader'   => true,
+			),
+
+			'trash_question_group' => array(
+				'func'       => '_trash_or_restore_question_groups',
+				'args'       => array('trash' => true),
+				'capability' => 'ee_delete_question_group',
+				'obj_id'     => $qsg_id,
+				'noheader'   => true,
+			),
+
+			'restore_question_group' => array(
+				'func'       => '_trash_or_restore_question_groups',
+				'args'       => array('trash' => false),
+				'capability' => 'ee_delete_question_group',
+				'obj_id'     => $qsg_id,
+				'noheader'   => true,
+			),
+
+			'insert_question_group' => array(
+				'func'       => '_insert_or_update_question_group',
+				'args'       => array('new_question_group' => true),
+				'capability' => 'ee_edit_question_groups',
+				'noheader'   => true,
+			),
+
+			'update_question_group' => array(
+				'func'       => '_insert_or_update_question_group',
+				'args'       => array('new_question_group' => false),
+				'capability' => 'ee_edit_question_group',
+				'obj_id'     => $qsg_id,
+				'noheader'   => true,
+			),
+
+			'trash_question_groups' => array(
+				'func'       => '_trash_or_restore_question_groups',
+				'args'       => array('trash' => true),
+				'capability' => 'ee_delete_question_groups',
+				'noheader'   => array('trash' => false),
+			),
+
+			'restore_question_groups' => array(
+				'func'       => '_trash_or_restore_question_groups',
+				'args'       => array('trash' => false),
+				'capability' => 'ee_delete_question_groups',
+				'noheader'   => true,
+			),
+
+
+			'espresso_update_question_group_order' => array(
+				'func'       => 'update_question_group_order',
+				'capability' => 'ee_edit_question_groups',
+				'noheader'   => true,
+			),
+
+			'view_reg_form_settings' => array(
+				'func'       => '_reg_form_settings',
+				'capability' => 'manage_options',
+			),
+
+			'update_reg_form_settings' => array(
+				'func'       => '_update_reg_form_settings',
+				'capability' => 'manage_options',
+				'noheader'   => true,
+			),
+		);
+		$this->_page_routes = array_merge($this->_page_routes, $new_page_routes);
+
+		$new_page_config = array(
+
+			'question_groups' => array(
+				'nav'           => array(
+					'label' => esc_html__('Question Groups', 'event_espresso'),
+					'order' => 20,
+				),
+				'list_table'    => 'Registration_Form_Question_Groups_Admin_List_Table',
+				'help_tabs'     => array(
+					'registration_form_question_groups_help_tab'                           => array(
+						'title'    => esc_html__('Question Groups', 'event_espresso'),
+						'filename' => 'registration_form_question_groups',
+					),
+					'registration_form_question_groups_table_column_headings_help_tab'     => array(
+						'title'    => esc_html__('Question Groups Table Column Headings', 'event_espresso'),
+						'filename' => 'registration_form_question_groups_table_column_headings',
+					),
+					'registration_form_question_groups_views_bulk_actions_search_help_tab' => array(
+						'title'    => esc_html__('Question Groups Views & Bulk Actions & Search', 'event_espresso'),
+						'filename' => 'registration_form_question_groups_views_bulk_actions_search',
+					),
+				),
+				'help_tour'     => array('Registration_Form_Question_Groups_Help_Tour'),
+				'metaboxes'     => $this->_default_espresso_metaboxes,
+				'require_nonce' => false,
+				'qtips'         => array(
+					'EE_Registration_Form_Tips',
+				),
+			),
+
+			'add_question' => array(
+				'nav'           => array(
+					'label'      => esc_html__('Add Question', 'event_espresso'),
+					'order'      => 5,
+					'persistent' => false,
+				),
+				'metaboxes'     => array_merge($this->_default_espresso_metaboxes, array('_publish_post_box')),
+				'help_tabs'     => array(
+					'registration_form_add_question_help_tab' => array(
+						'title'    => esc_html__('Add Question', 'event_espresso'),
+						'filename' => 'registration_form_add_question',
+					),
+				),
+				'help_tour'     => array('Registration_Form_Add_Question_Help_Tour'),
+				'require_nonce' => false,
+			),
+
+			'add_question_group' => array(
+				'nav'           => array(
+					'label'      => esc_html__('Add Question Group', 'event_espresso'),
+					'order'      => 5,
+					'persistent' => false,
+				),
+				'metaboxes'     => array_merge($this->_default_espresso_metaboxes, array('_publish_post_box')),
+				'help_tabs'     => array(
+					'registration_form_add_question_group_help_tab' => array(
+						'title'    => esc_html__('Add Question Group', 'event_espresso'),
+						'filename' => 'registration_form_add_question_group',
+					),
+				),
+				'help_tour'     => array('Registration_Form_Add_Question_Group_Help_Tour'),
+				'require_nonce' => false,
+			),
+
+			'edit_question_group' => array(
+				'nav'           => array(
+					'label'      => esc_html__('Edit Question Group', 'event_espresso'),
+					'order'      => 5,
+					'persistent' => false,
+					'url'        => isset($this->_req_data['question_group_id']) ? add_query_arg(
+						array('question_group_id' => $this->_req_data['question_group_id']),
+						$this->_current_page_view_url
+					) : $this->_admin_base_url,
+				),
+				'metaboxes'     => array_merge($this->_default_espresso_metaboxes, array('_publish_post_box')),
+				'help_tabs'     => array(
+					'registration_form_edit_question_group_help_tab' => array(
+						'title'    => esc_html__('Edit Question Group', 'event_espresso'),
+						'filename' => 'registration_form_edit_question_group',
+					),
+				),
+				'help_tour'     => array('Registration_Form_Edit_Question_Group_Help_Tour'),
+				'require_nonce' => false,
+			),
+
+			'view_reg_form_settings' => array(
+				'nav'           => array(
+					'label' => esc_html__('Reg Form Settings', 'event_espresso'),
+					'order' => 40,
+				),
+				'labels'        => array(
+					'publishbox' => esc_html__('Update Settings', 'event_espresso'),
+				),
+				'metaboxes'     => array_merge($this->_default_espresso_metaboxes, array('_publish_post_box')),
+				'help_tabs'     => array(
+					'registration_form_reg_form_settings_help_tab' => array(
+						'title'    => esc_html__('Registration Form Settings', 'event_espresso'),
+						'filename' => 'registration_form_reg_form_settings',
+					),
+				),
+				'help_tour'     => array('Registration_Form_Settings_Help_Tour'),
+				'require_nonce' => false,
+			),
+
+		);
+		$this->_page_config = array_merge($this->_page_config, $new_page_config);
+
+		// change the list table we're going to use so it's the NEW list table!
+		$this->_page_config['default']['list_table'] = 'Extend_Registration_Form_Questions_Admin_List_Table';
+
+
+		// additional labels
+		$new_labels = array(
+			'add_question'          => esc_html__('Add New Question', 'event_espresso'),
+			'delete_question'       => esc_html__('Delete Question', 'event_espresso'),
+			'add_question_group'    => esc_html__('Add New Question Group', 'event_espresso'),
+			'edit_question_group'   => esc_html__('Edit Question Group', 'event_espresso'),
+			'delete_question_group' => esc_html__('Delete Question Group', 'event_espresso'),
+		);
+		$this->_labels['buttons'] = array_merge($this->_labels['buttons'], $new_labels);
+	}
+
+
+	/**
+	 * @return void
+	 */
+	protected function _ajax_hooks()
+	{
+		add_action('wp_ajax_espresso_update_question_group_order', array($this, 'update_question_group_order'));
+	}
+
+
+	/**
+	 * @return void
+	 */
+	public function load_scripts_styles_question_groups()
+	{
+		wp_enqueue_script('espresso_ajax_table_sorting');
+	}
+
+
+	/**
+	 * @return void
+	 */
+	public function load_scripts_styles_add_question_group()
+	{
+		$this->load_scripts_styles_forms();
+		$this->load_sortable_question_script();
+	}
+
+
+	/**
+	 * @return void
+	 */
+	public function load_scripts_styles_edit_question_group()
+	{
+		$this->load_scripts_styles_forms();
+		$this->load_sortable_question_script();
+	}
+
+
+	/**
+	 * registers and enqueues script for questions
+	 *
+	 * @return void
+	 */
+	public function load_sortable_question_script()
+	{
+		wp_register_script(
+			'ee-question-sortable',
+			REGISTRATION_FORM_CAF_ASSETS_URL . 'ee_question_order.js',
+			array('jquery-ui-sortable'),
+			EVENT_ESPRESSO_VERSION,
+			true
+		);
+		wp_enqueue_script('ee-question-sortable');
+	}
+
+
+	/**
+	 * @return void
+	 */
+	protected function _set_list_table_views_default()
+	{
+		$this->_views = array(
+			'all' => array(
+				'slug'        => 'all',
+				'label'       => esc_html__('View All Questions', 'event_espresso'),
+				'count'       => 0,
+				'bulk_action' => array(
+					'trash_questions' => esc_html__('Trash', 'event_espresso'),
+				),
+			),
+		);
+
+		if (EE_Registry::instance()->CAP->current_user_can(
+			'ee_delete_questions',
+			'espresso_registration_form_trash_questions'
+		)
+		) {
+			$this->_views['trash'] = array(
+				'slug'        => 'trash',
+				'label'       => esc_html__('Trash', 'event_espresso'),
+				'count'       => 0,
+				'bulk_action' => array(
+					'delete_questions'  => esc_html__('Delete Permanently', 'event_espresso'),
+					'restore_questions' => esc_html__('Restore', 'event_espresso'),
+				),
+			);
+		}
+	}
+
+
+	/**
+	 * @return void
+	 */
+	protected function _set_list_table_views_question_groups()
+	{
+		$this->_views = array(
+			'all' => array(
+				'slug'        => 'all',
+				'label'       => esc_html__('All', 'event_espresso'),
+				'count'       => 0,
+				'bulk_action' => array(
+					'trash_question_groups' => esc_html__('Trash', 'event_espresso'),
+				),
+			),
+		);
+
+		if (EE_Registry::instance()->CAP->current_user_can(
+			'ee_delete_question_groups',
+			'espresso_registration_form_trash_question_groups'
+		)
+		) {
+			$this->_views['trash'] = array(
+				'slug'        => 'trash',
+				'label'       => esc_html__('Trash', 'event_espresso'),
+				'count'       => 0,
+				'bulk_action' => array(
+					'delete_question_groups'  => esc_html__('Delete Permanently', 'event_espresso'),
+					'restore_question_groups' => esc_html__('Restore', 'event_espresso'),
+				),
+			);
+		}
+	}
+
+
+	/**
+	 * @return void
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 */
+	protected function _questions_overview_list_table()
+	{
+		$this->_admin_page_title .= ' ' . $this->get_action_link_or_button(
+			'add_question',
+			'add_question',
+			array(),
+			'add-new-h2'
+		);
+		parent::_questions_overview_list_table();
+	}
+
+
+	/**
+	 * @return void
+	 * @throws DomainException
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 */
+	protected function _question_groups_overview_list_table()
+	{
+		$this->_search_btn_label = esc_html__('Question Groups', 'event_espresso');
+		$this->_admin_page_title .= ' ' . $this->get_action_link_or_button(
+			'add_question_group',
+			'add_question_group',
+			array(),
+			'add-new-h2'
+		);
+		$this->display_admin_list_table_page_with_sidebar();
+	}
+
+
+	/**
+	 * @return void
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 */
+	protected function _delete_question()
+	{
+		$success = $this->_delete_items($this->_question_model);
+		$this->_redirect_after_action(
+			$success,
+			$this->_question_model->item_name($success),
+			'deleted',
+			array('action' => 'default', 'status' => 'all')
+		);
+	}
+
+
+	/**
+	 * @return void
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 */
+	protected function _delete_questions()
+	{
+		$success = $this->_delete_items($this->_question_model);
+		$this->_redirect_after_action(
+			$success,
+			$this->_question_model->item_name($success),
+			'deleted permanently',
+			array('action' => 'default', 'status' => 'trash')
+		);
+	}
+
+
+	/**
+	 * Performs the deletion of a single or multiple questions or question groups.
+	 *
+	 * @param EEM_Soft_Delete_Base $model
+	 * @return int number of items deleted permanently
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 */
+	private function _delete_items(EEM_Soft_Delete_Base $model)
+	{
+		$success = 0;
+		do_action('AHEE_log', __FILE__, __FUNCTION__, '');
+		if (! empty($this->_req_data['checkbox']) && is_array($this->_req_data['checkbox'])) {
+			// if array has more than one element than success message should be plural
+			$success = count($this->_req_data['checkbox']) > 1 ? 2 : 1;
+			// cycle thru bulk action checkboxes
+			while (list($ID, $value) = each($this->_req_data['checkbox'])) {
+				if (! $this->_delete_item($ID, $model)) {
+					$success = 0;
+				}
+			}
+		} elseif (! empty($this->_req_data['QSG_ID'])) {
+			$success = $this->_delete_item($this->_req_data['QSG_ID'], $model);
+		} elseif (! empty($this->_req_data['QST_ID'])) {
+			$success = $this->_delete_item($this->_req_data['QST_ID'], $model);
+		} else {
+			EE_Error::add_error(
+				sprintf(
+					esc_html__(
+						"No Questions or Question Groups were selected for deleting. This error usually shows when you've attempted to delete via bulk action but there were no selections.",
+						"event_espresso"
+					)
+				),
+				__FILE__,
+				__FUNCTION__,
+				__LINE__
+			);
+		}
+		return $success;
+	}
+
+
+	/**
+	 * Deletes the specified question (and its associated question options) or question group
+	 *
+	 * @param int                  $id
+	 * @param EEM_Soft_Delete_Base $model
+	 * @return boolean
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 */
+	protected function _delete_item($id, $model)
+	{
+		if ($model instanceof EEM_Question) {
+			EEM_Question_Option::instance()->delete_permanently(array(array('QST_ID' => absint($id))));
+		}
+		return $model->delete_permanently_by_ID(absint($id));
+	}
+
+
+	/******************************    QUESTION GROUPS    ******************************/
+
+
+	/**
+	 * @param string $type
+	 * @return void
+	 * @throws DomainException
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 */
+	protected function _edit_question_group($type = 'add')
+	{
+		do_action('AHEE_log', __FILE__, __FUNCTION__, '');
+		$ID = isset($this->_req_data['QSG_ID']) && ! empty($this->_req_data['QSG_ID'])
+			? absint($this->_req_data['QSG_ID'])
+			: false;
+
+		switch ($this->_req_action) {
+			case 'add_question_group':
+				$this->_admin_page_title = esc_html__('Add Question Group', 'event_espresso');
+				break;
+			case 'edit_question_group':
+				$this->_admin_page_title = esc_html__('Edit Question Group', 'event_espresso');
+				break;
+			default:
+				$this->_admin_page_title = ucwords(str_replace('_', ' ', $this->_req_action));
+		}
+		// add ID to title if editing
+		$this->_admin_page_title = $ID ? $this->_admin_page_title . ' # ' . $ID : $this->_admin_page_title;
+		if ($ID) {
+			/** @var EE_Question_Group $questionGroup */
+			$questionGroup = $this->_question_group_model->get_one_by_ID($ID);
+			$additional_hidden_fields = array('QSG_ID' => array('type' => 'hidden', 'value' => $ID));
+			$this->_set_add_edit_form_tags('update_question_group', $additional_hidden_fields);
+		} else {
+			/** @var EE_Question_Group $questionGroup */
+			$questionGroup = EEM_Question_Group::instance()->create_default_object();
+			$questionGroup->set_order_to_latest();
+			$this->_set_add_edit_form_tags('insert_question_group');
+		}
+		$this->_template_args['values'] = $this->_yes_no_values;
+		$this->_template_args['all_questions'] = $questionGroup->questions_in_and_not_in_group();
+		$this->_template_args['QSG_ID'] = $ID ? $ID : true;
+		$this->_template_args['question_group'] = $questionGroup;
+
+		$redirect_URL = add_query_arg(array('action' => 'question_groups'), $this->_admin_base_url);
+		$this->_set_publish_post_box_vars('id', $ID, false, $redirect_URL);
+		$this->_template_args['admin_page_content'] = EEH_Template::display_template(
+			REGISTRATION_FORM_CAF_TEMPLATE_PATH . 'question_groups_main_meta_box.template.php',
+			$this->_template_args,
+			true
+		);
+
+		// the details template wrapper
+		$this->display_admin_page_with_sidebar();
+	}
+
+
+	/**
+	 * @return void
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 */
+	protected function _delete_question_groups()
+	{
+		$success = $this->_delete_items($this->_question_group_model);
+		$this->_redirect_after_action(
+			$success,
+			$this->_question_group_model->item_name($success),
+			'deleted permanently',
+			array('action' => 'question_groups', 'status' => 'trash')
+		);
+	}
+
+
+	/**
+	 * @param bool $new_question_group
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 */
+	protected function _insert_or_update_question_group($new_question_group = true)
+	{
+		do_action('AHEE_log', __FILE__, __FUNCTION__, '');
+		$set_column_values = $this->_set_column_values_for($this->_question_group_model);
+		if ($new_question_group) {
+			$QSG_ID = $this->_question_group_model->insert($set_column_values);
+			$success = $QSG_ID ? 1 : 0;
+		} else {
+			$QSG_ID = absint($this->_req_data['QSG_ID']);
+			unset($set_column_values['QSG_ID']);
+			$success = $this->_question_group_model->update($set_column_values, array(array('QSG_ID' => $QSG_ID)));
+		}
+		$phone_question_id = EEM_Question::instance()->get_Question_ID_from_system_string(
+			EEM_Attendee::system_question_phone
+		);
+		// update the existing related questions
+		// BUT FIRST...  delete the phone question from the Question_Group_Question
+		// if it is being added to this question group (therefore removed from the existing group)
+		if (isset($this->_req_data['questions'], $this->_req_data['questions'][ $phone_question_id ])) {
+			// delete where QST ID = system phone question ID and Question Group ID is NOT this group
+			EEM_Question_Group_Question::instance()->delete(
+				array(
+					array(
+						'QST_ID' => $phone_question_id,
+						'QSG_ID' => array('!=', $QSG_ID),
+					),
+				)
+			);
+		}
+		/** @type EE_Question_Group $question_group */
+		$question_group = $this->_question_group_model->get_one_by_ID($QSG_ID);
+		$questions = $question_group->questions();
+		// make sure system phone question is added to list of questions for this group
+		if (! isset($questions[ $phone_question_id ])) {
+			$questions[ $phone_question_id ] = EEM_Question::instance()->get_one_by_ID($phone_question_id);
+		}
+
+		foreach ($questions as $question_ID => $question) {
+			// first we always check for order.
+			if (! empty($this->_req_data['question_orders'][ $question_ID ])) {
+				// update question order
+				$question_group->update_question_order(
+					$question_ID,
+					$this->_req_data['question_orders'][ $question_ID ]
+				);
+			}
+
+			// then we always check if adding or removing.
+			if (isset($this->_req_data['questions'], $this->_req_data['questions'][ $question_ID ])) {
+				$question_group->add_question($question_ID);
+			} else {
+				// not found, remove it (but only if not a system question for the personal group
+				// with the exception of lname system question - we allow removal of it)
+				if (in_array(
+					$question->system_ID(),
+					EEM_Question::instance()->required_system_questions_in_system_question_group(
+						$question_group->system_group()
+					)
+				)) {
+					continue;
+				} else {
+					$question_group->remove_question($question_ID);
+				}
+			}
+		}
+		// save new related questions
+		if (isset($this->_req_data['questions'])) {
+			foreach ($this->_req_data['questions'] as $QST_ID) {
+				$question_group->add_question($QST_ID);
+				if (isset($this->_req_data['question_orders'][ $QST_ID ])) {
+					$question_group->update_question_order($QST_ID, $this->_req_data['question_orders'][ $QST_ID ]);
+				}
+			}
+		}
+
+		if ($success !== false) {
+			$msg = $new_question_group
+				? sprintf(
+					esc_html__('The %s has been created', 'event_espresso'),
+					$this->_question_group_model->item_name()
+				)
+				: sprintf(
+					esc_html__(
+						'The %s has been updated',
+						'event_espresso'
+					),
+					$this->_question_group_model->item_name()
+				);
+			EE_Error::add_success($msg);
+		}
+		$this->_redirect_after_action(
+			false,
+			'',
+			'',
+			array('action' => 'edit_question_group', 'QSG_ID' => $QSG_ID),
+			true
+		);
+	}
+
+
+	/**
+	 * duplicates a question and all its question options and redirects to the new question.
+	 *
+	 * @return void
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws ReflectionException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 */
+	public function _duplicate_question()
+	{
+		$question_ID = (int) $this->_req_data['QST_ID'];
+		$question = EEM_Question::instance()->get_one_by_ID($question_ID);
+		if ($question instanceof EE_Question) {
+			$new_question = $question->duplicate();
+			if ($new_question instanceof EE_Question) {
+				$this->_redirect_after_action(
+					true,
+					esc_html__('Question', 'event_espresso'),
+					esc_html__('Duplicated', 'event_espresso'),
+					array('action' => 'edit_question', 'QST_ID' => $new_question->ID()),
+					true
+				);
+			} else {
+				global $wpdb;
+				EE_Error::add_error(
+					sprintf(
+						esc_html__(
+							'Could not duplicate question with ID %1$d because: %2$s',
+							'event_espresso'
+						),
+						$question_ID,
+						$wpdb->last_error
+					),
+					__FILE__,
+					__FUNCTION__,
+					__LINE__
+				);
+				$this->_redirect_after_action(false, '', '', array('action' => 'default'), false);
+			}
+		} else {
+			EE_Error::add_error(
+				sprintf(
+					esc_html__(
+						'Could not duplicate question with ID %d because it didn\'t exist!',
+						'event_espresso'
+					),
+					$question_ID
+				),
+				__FILE__,
+				__FUNCTION__,
+				__LINE__
+			);
+			$this->_redirect_after_action(false, '', '', array('action' => 'default'), false);
+		}
+	}
+
+
+	/**
+	 * @param bool $trash
+	 * @throws EE_Error
+	 */
+	protected function _trash_or_restore_question_groups($trash = true)
+	{
+		$this->_trash_or_restore_items($this->_question_group_model, $trash);
+	}
+
+
+	/**
+	 *_trash_question
+	 *
+	 * @return void
+	 * @throws EE_Error
+	 */
+	protected function _trash_question()
+	{
+		$success = $this->_question_model->delete_by_ID((int) $this->_req_data['QST_ID']);
+		$query_args = array('action' => 'default', 'status' => 'all');
+		$this->_redirect_after_action($success, $this->_question_model->item_name($success), 'trashed', $query_args);
+	}
+
+
+	/**
+	 * @param bool $trash
+	 * @throws EE_Error
+	 */
+	protected function _trash_or_restore_questions($trash = true)
+	{
+		$this->_trash_or_restore_items($this->_question_model, $trash);
+	}
+
+
+	/**
+	 * Internally used to delete or restore items, using the request data. Meant to be
+	 * flexible between question or question groups
+	 *
+	 * @param EEM_Soft_Delete_Base $model
+	 * @param boolean              $trash whether to trash or restore
+	 * @throws EE_Error
+	 */
+	private function _trash_or_restore_items(EEM_Soft_Delete_Base $model, $trash = true)
+	{
+
+		do_action('AHEE_log', __FILE__, __FUNCTION__, '');
+
+		$success = 1;
+		// Checkboxes
+		// echo "trash $trash";
+		// var_dump($this->_req_data['checkbox']);die;
+		if (isset($this->_req_data['checkbox'])) {
+			if (! empty($this->_req_data['checkbox']) && is_array($this->_req_data['checkbox'])) {
+				// if array has more than one element than success message should be plural
+				$success = count($this->_req_data['checkbox']) > 1 ? 2 : 1;
+				// cycle thru bulk action checkboxes
+				while (list($ID, $value) = each($this->_req_data['checkbox'])) {
+					if (! $model->delete_or_restore_by_ID($trash, absint($ID))) {
+						$success = 0;
+					}
+				}
+			} else {
+				// grab single id and delete
+				$ID = absint($this->_req_data['checkbox']);
+				if (! $model->delete_or_restore_by_ID($trash, $ID)) {
+					$success = 0;
+				}
+			}
+		} else {
+			// delete via trash link
+			// grab single id and delete
+			$ID = absint($this->_req_data[ $model->primary_key_name() ]);
+			if (! $model->delete_or_restore_by_ID($trash, $ID)) {
+				$success = 0;
+			}
+		}
+
+
+		$action = $model instanceof EEM_Question ? 'default' : 'question_groups';// strtolower( $model->item_name(2) );
+		// echo "action :$action";
+		// $action = 'questions' ? 'default' : $action;
+		if ($trash) {
+			$action_desc = 'trashed';
+			$status = 'trash';
+		} else {
+			$action_desc = 'restored';
+			$status = 'all';
+		}
+		$this->_redirect_after_action(
+			$success,
+			$model->item_name($success),
+			$action_desc,
+			array('action' => $action, 'status' => $status)
+		);
+	}
+
+
+	/**
+	 * @param            $per_page
+	 * @param int        $current_page
+	 * @param bool|false $count
+	 * @return EE_Soft_Delete_Base_Class[]|int
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 */
+	public function get_trashed_questions($per_page, $current_page = 1, $count = false)
+	{
+		$query_params = $this->get_query_params(EEM_Question::instance(), $per_page, $current_page);
+
+		if ($count) {
+			// note: this a subclass of EEM_Soft_Delete_Base, so this is actually only getting non-trashed items
+			$where = isset($query_params[0]) ? array($query_params[0]) : array();
+			$results = $this->_question_model->count_deleted($where);
+		} else {
+			// note: this a subclass of EEM_Soft_Delete_Base, so this is actually only getting non-trashed items
+			$results = $this->_question_model->get_all_deleted($query_params);
+		}
+		return $results;
+	}
+
+
+	/**
+	 * @param            $per_page
+	 * @param int        $current_page
+	 * @param bool|false $count
+	 * @return EE_Soft_Delete_Base_Class[]|int
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 */
+	public function get_question_groups($per_page, $current_page = 1, $count = false)
+	{
+		$questionGroupModel = EEM_Question_Group::instance();
+		$query_params = $this->get_query_params($questionGroupModel, $per_page, $current_page);
+		if ($count) {
+			$where = isset($query_params[0]) ? array($query_params[0]) : array();
+			$results = $questionGroupModel->count($where);
+		} else {
+			$results = $questionGroupModel->get_all($query_params);
+		}
+		return $results;
+	}
+
+
+	/**
+	 * @param      $per_page
+	 * @param int  $current_page
+	 * @param bool $count
+	 * @return EE_Soft_Delete_Base_Class[]|int
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 */
+	public function get_trashed_question_groups($per_page, $current_page = 1, $count = false)
+	{
+		$questionGroupModel = EEM_Question_Group::instance();
+		$query_params = $this->get_query_params($questionGroupModel, $per_page, $current_page);
+		if ($count) {
+			$where = isset($query_params[0]) ? array($query_params[0]) : array();
+			$query_params['limit'] = null;
+			$results = $questionGroupModel->count_deleted($where);
+		} else {
+			$results = $questionGroupModel->get_all_deleted($query_params);
+		}
+		return $results;
+	}
+
+
+	/**
+	 * method for performing updates to question order
+	 *
+	 * @return void results array
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 */
+	public function update_question_group_order()
+	{
+
+		$success = esc_html__('Question group order was updated successfully.', 'event_espresso');
+
+		// grab our row IDs
+		$row_ids = isset($this->_req_data['row_ids']) && ! empty($this->_req_data['row_ids'])
+			? explode(',', rtrim($this->_req_data['row_ids'], ','))
+			: array();
+
+		$perpage = ! empty($this->_req_data['perpage'])
+			? (int) $this->_req_data['perpage']
+			: null;
+		$curpage = ! empty($this->_req_data['curpage'])
+			? (int) $this->_req_data['curpage']
+			: null;
+
+		if (! empty($row_ids)) {
+			// figure out where we start the row_id count at for the current page.
+			$qsgcount = empty($curpage) ? 0 : ($curpage - 1) * $perpage;
+
+			$row_count = count($row_ids);
+			for ($i = 0; $i < $row_count; $i++) {
+				// Update the questions when re-ordering
+				$updated = EEM_Question_Group::instance()->update(
+					array('QSG_order' => $qsgcount),
+					array(array('QSG_ID' => $row_ids[ $i ]))
+				);
+				if ($updated === false) {
+					$success = false;
+				}
+				$qsgcount++;
+			}
+		} else {
+			$success = false;
+		}
+
+		$errors = ! $success
+			? esc_html__('An error occurred. The question group order was not updated.', 'event_espresso')
+			: false;
+
+		echo wp_json_encode(array('return_data' => false, 'success' => $success, 'errors' => $errors));
+		die();
+	}
+
+
+
+	/***************************************       REGISTRATION SETTINGS       ***************************************/
+
+
+	/**
+	 * @throws DomainException
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 */
+	protected function _reg_form_settings()
+	{
+		$this->_template_args['values'] = $this->_yes_no_values;
+		add_action(
+			'AHEE__Extend_Registration_Form_Admin_Page___reg_form_settings_template',
+			array($this, 'email_validation_settings_form'),
+			2
+		);
+		$this->_template_args = (array) apply_filters(
+			'FHEE__Extend_Registration_Form_Admin_Page___reg_form_settings___template_args',
+			$this->_template_args
+		);
+		$this->_set_add_edit_form_tags('update_reg_form_settings');
+		$this->_set_publish_post_box_vars(null, false, false, null, false);
+		$this->_template_args['admin_page_content'] = EEH_Template::display_template(
+			REGISTRATION_FORM_CAF_TEMPLATE_PATH . 'reg_form_settings.template.php',
+			$this->_template_args,
+			true
+		);
+		$this->display_admin_page_with_sidebar();
+	}
+
+
+	/**
+	 * @return void
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws ReflectionException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 */
+	protected function _update_reg_form_settings()
+	{
+		EE_Registry::instance()->CFG->registration = $this->update_email_validation_settings_form(
+			EE_Registry::instance()->CFG->registration
+		);
+		EE_Registry::instance()->CFG->registration = apply_filters(
+			'FHEE__Extend_Registration_Form_Admin_Page___update_reg_form_settings__CFG_registration',
+			EE_Registry::instance()->CFG->registration
+		);
+		$success = $this->_update_espresso_configuration(
+			esc_html__('Registration Form Options', 'event_espresso'),
+			EE_Registry::instance()->CFG,
+			__FILE__,
+			__FUNCTION__,
+			__LINE__
+		);
+		$this->_redirect_after_action(
+			$success,
+			esc_html__('Registration Form Options', 'event_espresso'),
+			'updated',
+			array('action' => 'view_reg_form_settings')
+		);
+	}
+
+
+	/**
+	 * @return void
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 */
+	public function email_validation_settings_form()
+	{
+		echo $this->_email_validation_settings_form()->get_html();
+	}
+
+
+	/**
+	 * _email_validation_settings_form
+	 *
+	 * @access protected
+	 * @return EE_Form_Section_Proper
+	 * @throws \EE_Error
+	 */
+	protected function _email_validation_settings_form()
+	{
+		return new EE_Form_Section_Proper(
+			array(
+				'name'            => 'email_validation_settings',
+				'html_id'         => 'email_validation_settings',
+				'layout_strategy' => new EE_Admin_Two_Column_Layout(),
+				'subsections'     => apply_filters(
+					'FHEE__Extend_Registration_Form_Admin_Page___email_validation_settings_form__form_subsections',
+					array(
+						'email_validation_hdr'   => new EE_Form_Section_HTML(
+							EEH_HTML::h2(esc_html__('Email Validation Settings', 'event_espresso'))
+						),
+						'email_validation_level' => new EE_Select_Input(
+							array(
+								'basic'      => esc_html__('Basic', 'event_espresso'),
+								'wp_default' => esc_html__('WordPress Default', 'event_espresso'),
+								'i18n'       => esc_html__('International', 'event_espresso'),
+								'i18n_dns'   => esc_html__('International + DNS Check', 'event_espresso'),
+							),
+							array(
+								'html_label_text' => esc_html__('Email Validation Level', 'event_espresso')
+													 . EEH_Template::get_help_tab_link('email_validation_info'),
+								'html_help_text'  => esc_html__(
+									'These levels range from basic validation ( ie: text@text.text ) to more advanced checks against international email addresses (ie: üñîçøðé@example.com ) with additional MX and A record checks to confirm the domain actually exists. More information on on each level can be found within the help section.',
+									'event_espresso'
+								),
+								'default'         => isset(
+									EE_Registry::instance()->CFG->registration->email_validation_level
+								)
+									? EE_Registry::instance()->CFG->registration->email_validation_level
+									: 'wp_default',
+								'required'        => false,
+							)
+						),
+					)
+				),
+			)
+		);
+	}
+
+
+	/**
+	 * @param EE_Registration_Config $EE_Registration_Config
+	 * @return EE_Registration_Config
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws ReflectionException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 */
+	public function update_email_validation_settings_form(EE_Registration_Config $EE_Registration_Config)
+	{
+		$prev_email_validation_level = $EE_Registration_Config->email_validation_level;
+		try {
+			$email_validation_settings_form = $this->_email_validation_settings_form();
+			// if not displaying a form, then check for form submission
+			if ($email_validation_settings_form->was_submitted()) {
+				// capture form data
+				$email_validation_settings_form->receive_form_submission();
+				// validate form data
+				if ($email_validation_settings_form->is_valid()) {
+					// grab validated data from form
+					$valid_data = $email_validation_settings_form->valid_data();
+					if (isset($valid_data['email_validation_level'])) {
+						$email_validation_level = $valid_data['email_validation_level'];
+						// now if they want to use international email addresses
+						if ($email_validation_level === 'i18n' || $email_validation_level === 'i18n_dns') {
+							// in case we need to reset their email validation level,
+							// make sure that the previous value wasn't already set to one of the i18n options.
+							if ($prev_email_validation_level === 'i18n' || $prev_email_validation_level === 'i18n_dns') {
+								// if so, then reset it back to "basic" since that is the only other option that,
+								// despite offering poor validation, supports i18n email addresses
+								$prev_email_validation_level = 'basic';
+							}
+							// confirm our i18n email validation will work on the server
+							if (! $this->_verify_pcre_support($EE_Registration_Config, $email_validation_level)) {
+								// or reset email validation level to previous value
+								$email_validation_level = $prev_email_validation_level;
+							}
+						}
+						$EE_Registration_Config->email_validation_level = $email_validation_level;
+					} else {
+						EE_Error::add_error(
+							esc_html__(
+								'Invalid or missing Email Validation settings. Please refresh the form and try again.',
+								'event_espresso'
+							),
+							__FILE__,
+							__FUNCTION__,
+							__LINE__
+						);
+					}
+				} else {
+					if ($email_validation_settings_form->submission_error_message() !== '') {
+						EE_Error::add_error(
+							$email_validation_settings_form->submission_error_message(),
+							__FILE__,
+							__FUNCTION__,
+							__LINE__
+						);
+					}
+				}
+			}
+		} catch (EE_Error $e) {
+			$e->get_error();
+		}
+		return $EE_Registration_Config;
+	}
+
+
+	/**
+	 * confirms that the server's PHP version has the PCRE module enabled,
+	 * and that the PCRE version works with our i18n email validation
+	 *
+	 * @param EE_Registration_Config $EE_Registration_Config
+	 * @param string                 $email_validation_level
+	 * @return bool
+	 */
+	private function _verify_pcre_support(EE_Registration_Config $EE_Registration_Config, $email_validation_level)
+	{
+		// first check that PCRE is enabled
+		if (! defined('PREG_BAD_UTF8_ERROR')) {
+			EE_Error::add_error(
+				sprintf(
+					esc_html__(
+						'We\'re sorry, but it appears that your server\'s version of PHP was not compiled with PCRE unicode support.%1$sPlease contact your hosting company and ask them whether the PCRE compiled with your version of PHP on your server can be been built with the "--enable-unicode-properties" and "--enable-utf8" configuration switches to enable more complex regex expressions.%1$sIf they are unable, or unwilling to do so, then your server will not support international email addresses using UTF-8 unicode characters. This means you will either have to lower your email validation level to "Basic" or "WordPress Default", or switch to a hosting company that has/can enable PCRE unicode support on the server.',
+						'event_espresso'
+					),
+					'<br />'
+				),
+				__FILE__,
+				__FUNCTION__,
+				__LINE__
+			);
+			return false;
+		} else {
+			// PCRE support is enabled, but let's still
+			// perform a test to see if the server will support it.
+			// but first, save the updated validation level to the config,
+			// so that the validation strategy picks it up.
+			// this will get bumped back down if it doesn't work
+			$EE_Registration_Config->email_validation_level = $email_validation_level;
+			try {
+				$email_validator = new EE_Email_Validation_Strategy();
+				$i18n_email_address = apply_filters(
+					'FHEE__Extend_Registration_Form_Admin_Page__update_email_validation_settings_form__i18n_email_address',
+					'jägerjürgen@deutschland.com'
+				);
+				$email_validator->validate($i18n_email_address);
+			} catch (Exception $e) {
+				EE_Error::add_error(
+					sprintf(
+						esc_html__(
+							'We\'re sorry, but it appears that your server\'s configuration will not support the "International" or "International + DNS Check" email validation levels.%1$sTo correct this issue, please consult with your hosting company regarding your server\'s PCRE settings.%1$sIt is recommended that your PHP version be configured to use PCRE 8.10 or newer.%1$sMore information regarding PCRE versions and installation can be found here: %2$s',
+							'event_espresso'
+						),
+						'<br />',
+						'<a href="http://php.net/manual/en/pcre.installation.php" target="_blank">http://php.net/manual/en/pcre.installation.php</a>'
+					),
+					__FILE__,
+					__FUNCTION__,
+					__LINE__
+				);
+				return false;
+			}
+		}
+		return true;
+	}
 }

core/db_models/EEM_CPT_Base.model.php

Indentation +558 added lines, -558 removed lines

@@ -16,562 +16,562 @@
 abstract class EEM_CPT_Base extends EEM_Soft_Delete_Base
 {
 
-    const EVENT_CATEGORY_TAXONOMY = 'espresso_event_categories';
-
-    /**
-     * @var string post_status_publish - the wp post status for published cpts
-     */
-    const post_status_publish = 'publish';
-
-    /**
-     * @var string post_status_future - the wp post status for scheduled cpts
-     */
-    const post_status_future = 'future';
-
-    /**
-     * @var string post_status_draft - the wp post status for draft cpts
-     */
-    const post_status_draft = 'draft';
-
-    /**
-     * @var string post_status_pending - the wp post status for pending cpts
-     */
-    const post_status_pending = 'pending';
-
-    /**
-     * @var string post_status_private - the wp post status for private cpts
-     */
-    const post_status_private = 'private';
-
-    /**
-     * @var string post_status_trashed - the wp post status for trashed cpts
-     */
-    const post_status_trashed = 'trash';
-
-    /**
-     * This is an array of custom statuses for the given CPT model (modified by children)
-     * format:
-     * array(
-     *        'status_name' => array(
-     *            'label' => __('Status Name', 'event_espresso'),
-     *            'public' => TRUE //whether a public status or not.
-     *        )
-     * )
-     *
-     * @var array
-     */
-    protected $_custom_stati = array();
-
-
-    /**
-     * Adds a relationship to Term_Taxonomy for each CPT_Base
-     *
-     * @param string $timezone
-     * @throws \EE_Error
-     */
-    protected function __construct($timezone = null)
-    {
-        // adds a relationship to Term_Taxonomy for all these models. For this to work
-        // Term_Relationship must have a relation to each model subclassing EE_CPT_Base explicitly
-        // eg, in EEM_Term_Relationship, inside the _model_relations array, there must be an entry
-        // with key equalling the subclassing model's model name (eg 'Event' or 'Venue'), and the value
-        // must also be new EE_HABTM_Relation('Term_Relationship');
-        $this->_model_relations['Term_Taxonomy'] = new EE_HABTM_Relation('Term_Relationship');
-        $primary_table_name = null;
-        // add  the common _status field to all CPT primary tables.
-        foreach ($this->_tables as $alias => $table_obj) {
-            if ($table_obj instanceof EE_Primary_Table) {
-                $primary_table_name = $alias;
-            }
-        }
-        // set default wp post statuses if child has not already set.
-        if (! isset($this->_fields[ $primary_table_name ]['status'])) {
-            $this->_fields[ $primary_table_name ]['status'] = new EE_WP_Post_Status_Field(
-                'post_status',
-                __("Event Status", "event_espresso"),
-                false,
-                'draft'
-            );
-        }
-        if (! isset($this->_fields[ $primary_table_name ]['to_ping'])) {
-            $this->_fields[ $primary_table_name ]['to_ping'] = new EE_DB_Only_Text_Field(
-                'to_ping',
-                __('To Ping', 'event_espresso'),
-                false,
-                ''
-            );
-        }
-        if (! isset($this->_fields[ $primary_table_name ]['pinged'])) {
-            $this->_fields[ $primary_table_name ]['pinged'] = new EE_DB_Only_Text_Field(
-                'pinged',
-                __('Pinged', 'event_espresso'),
-                false,
-                ''
-            );
-        }
-        if (! isset($this->_fields[ $primary_table_name ]['comment_status'])) {
-            $this->_fields[ $primary_table_name ]['comment_status'] = new EE_Plain_Text_Field(
-                'comment_status',
-                __('Comment Status', 'event_espresso'),
-                false,
-                'open'
-            );
-        }
-        if (! isset($this->_fields[ $primary_table_name ]['ping_status'])) {
-            $this->_fields[ $primary_table_name ]['ping_status'] = new EE_Plain_Text_Field(
-                'ping_status',
-                __('Ping Status', 'event_espresso'),
-                false,
-                'open'
-            );
-        }
-        if (! isset($this->_fields[ $primary_table_name ]['post_content_filtered'])) {
-            $this->_fields[ $primary_table_name ]['post_content_filtered'] = new EE_DB_Only_Text_Field(
-                'post_content_filtered',
-                __('Post Content Filtered', 'event_espresso'),
-                false,
-                ''
-            );
-        }
-        if (! isset($this->_model_relations['Post_Meta'])) {
-            // don't block deletes though because we want to maintain the current behaviour
-            $this->_model_relations['Post_Meta'] = new EE_Has_Many_Relation(false);
-        }
-        if (! $this->_minimum_where_conditions_strategy instanceof EE_Default_Where_Conditions) {
-            // nothing was set during child constructor, so set default
-            $this->_minimum_where_conditions_strategy = new EE_CPT_Minimum_Where_Conditions($this->post_type());
-        }
-        if (! $this->_default_where_conditions_strategy instanceof EE_Default_Where_Conditions) {
-            // nothing was set during child constructor, so set default
-            // it's ok for child classes to specify this, but generally this is more DRY
-            $this->_default_where_conditions_strategy = new EE_CPT_Where_Conditions($this->post_type());
-        }
-        parent::__construct($timezone);
-    }
-
-
-    /**
-     * @return array
-     */
-    public function public_event_stati()
-    {
-        // @see wp-includes/post.php
-        return get_post_stati(array('public' => true));
-    }
-
-
-    /**
-     * Searches for field on this model of type 'deleted_flag'. if it is found,
-     * returns it's name. BUT That doesn't apply to CPTs. We should instead use post_status_field_name
-     *
-     * @return string
-     * @throws EE_Error
-     */
-    public function deleted_field_name()
-    {
-        throw new EE_Error(
-            sprintf(
-                __(
-                    "EEM_CPT_Base should nto call deleted_field_name! It should instead use post_status_field_name",
-                    "event_espresso"
-                )
-            )
-        );
-    }
-
-
-    /**
-     * Gets the field's name that sets the post status
-     *
-     * @return string
-     * @throws EE_Error
-     */
-    public function post_status_field_name()
-    {
-        $field = $this->get_a_field_of_type('EE_WP_Post_Status_Field');
-        if ($field) {
-            return $field->get_name();
-        } else {
-            throw new EE_Error(
-                sprintf(
-                    __(
-                        'We are trying to find the post status flag field on %s, but none was found. Are you sure there is a field of type EE_Trashed_Flag_Field in %s constructor?',
-                        'event_espresso'
-                    ),
-                    get_class($this),
-                    get_class($this)
-                )
-            );
-        }
-    }
-
-
-    /**
-     * Alters the query params so that only trashed/soft-deleted items are considered
-     *
-     * @param array $query_params like EEM_Base::get_all's $query_params
-     * @return array like EEM_Base::get_all's $query_params
-     */
-    protected function _alter_query_params_so_only_trashed_items_included($query_params)
-    {
-        $post_status_field_name = $this->post_status_field_name();
-        $query_params[0][ $post_status_field_name ] = self::post_status_trashed;
-        return $query_params;
-    }
-
-
-    /**
-     * Alters the query params so each item's deleted status is ignored.
-     *
-     * @param array $query_params
-     * @return array
-     */
-    protected function _alter_query_params_so_deleted_and_undeleted_items_included($query_params)
-    {
-        $query_params['default_where_conditions'] = 'minimum';
-        return $query_params;
-    }
-
-
-    /**
-     * Performs deletes or restores on items. Both soft-deleted and non-soft-deleted items considered.
-     *
-     * @param boolean $delete       true to indicate deletion, false to indicate restoration
-     * @param array   $query_params like EEM_Base::get_all
-     * @return boolean success
-     */
-    public function delete_or_restore($delete = true, $query_params = array())
-    {
-        $post_status_field_name = $this->post_status_field_name();
-        $query_params = $this->_alter_query_params_so_deleted_and_undeleted_items_included($query_params);
-        $new_status = $delete ? self::post_status_trashed : 'draft';
-        if ($this->update(array($post_status_field_name => $new_status), $query_params)) {
-            return true;
-        } else {
-            return false;
-        }
-    }
-
-
-    /**
-     * meta_table
-     * returns first EE_Secondary_Table table name
-     *
-     * @access public
-     * @return string
-     */
-    public function meta_table()
-    {
-        $meta_table = $this->_get_other_tables();
-        $meta_table = reset($meta_table);
-        return $meta_table instanceof EE_Secondary_Table ? $meta_table->get_table_name() : null;
-    }
-
-
-    /**
-     * This simply returns an array of the meta table fields (useful for when we just need to update those fields)
-     *
-     * @param  bool $all triggers whether we include DB_Only fields or JUST non DB_Only fields.  Defaults to false (no
-     *                   db only fields)
-     * @return array
-     */
-    public function get_meta_table_fields($all = false)
-    {
-        $all_fields = $fields_to_return = array();
-        foreach ($this->_tables as $alias => $table_obj) {
-            if ($table_obj instanceof EE_Secondary_Table) {
-                $all_fields = array_merge($this->_get_fields_for_table($alias), $all_fields);
-            }
-        }
-        if (! $all) {
-            foreach ($all_fields as $name => $obj) {
-                if ($obj instanceof EE_DB_Only_Field_Base) {
-                    continue;
-                }
-                $fields_to_return[] = $name;
-            }
-        } else {
-            $fields_to_return = array_keys($all_fields);
-        }
-        return $fields_to_return;
-    }
-
-
-    /**
-     * Adds an event category with the specified name and description to the specified
-     * $cpt_model_object. Intelligently adds a term if necessary, and adds a term_taxonomy if necessary,
-     * and adds an entry in the term_relationship if necessary.
-     *
-     * @param EE_CPT_Base $cpt_model_object
-     * @param string      $category_name (used to derive the term slug too)
-     * @param string      $category_description
-     * @param int         $parent_term_taxonomy_id
-     * @return EE_Term_Taxonomy
-     */
-    public function add_event_category(
-        EE_CPT_Base $cpt_model_object,
-        $category_name,
-        $category_description = '',
-        $parent_term_taxonomy_id = null
-    ) {
-        // create term
-        require_once(EE_MODELS . 'EEM_Term.model.php');
-        // first, check for a term by the same name or slug
-        $category_slug = sanitize_title($category_name);
-        $term = EEM_Term::instance()->get_one(
-            array(
-                array(
-                    'OR' => array(
-                        'name' => $category_name,
-                        'slug' => $category_slug,
-                    ),
-                    'Term_Taxonomy.taxonomy' => self::EVENT_CATEGORY_TAXONOMY
-                ),
-            )
-        );
-        if (! $term) {
-            $term = EE_Term::new_instance(
-                array(
-                    'name' => $category_name,
-                    'slug' => $category_slug,
-                )
-            );
-            $term->save();
-        }
-        // make sure there's a term-taxonomy entry too
-        require_once(EE_MODELS . 'EEM_Term_Taxonomy.model.php');
-        $term_taxonomy = EEM_Term_Taxonomy::instance()->get_one(
-            array(
-                array(
-                    'term_id'  => $term->ID(),
-                    'taxonomy' => self::EVENT_CATEGORY_TAXONOMY,
-                ),
-            )
-        );
-        /** @var $term_taxonomy EE_Term_Taxonomy */
-        if (! $term_taxonomy) {
-            $term_taxonomy = EE_Term_Taxonomy::new_instance(
-                array(
-                    'term_id'     => $term->ID(),
-                    'taxonomy'    => self::EVENT_CATEGORY_TAXONOMY,
-                    'description' => $category_description,
-                    'term_count'       => 1,
-                    'parent'      => $parent_term_taxonomy_id,
-                )
-            );
-            $term_taxonomy->save();
-        } else {
-            $term_taxonomy->set_count($term_taxonomy->count() + 1);
-            $term_taxonomy->save();
-        }
-        return $this->add_relationship_to($cpt_model_object, $term_taxonomy, 'Term_Taxonomy');
-    }
-
-
-    /**
-     * Removed the category specified by name as having a relation to this event.
-     * Does not remove the term or term_taxonomy.
-     *
-     * @param EE_CPT_Base $cpt_model_object_event
-     * @param string      $category_name name of the event category (term)
-     * @return bool
-     */
-    public function remove_event_category(EE_CPT_Base $cpt_model_object_event, $category_name)
-    {
-        // find the term_taxonomy by that name
-        $term_taxonomy = $this->get_first_related(
-            $cpt_model_object_event,
-            'Term_Taxonomy',
-            array(array('Term.name' => $category_name, 'taxonomy' => self::EVENT_CATEGORY_TAXONOMY))
-        );
-        /** @var $term_taxonomy EE_Term_Taxonomy */
-        if ($term_taxonomy) {
-            $term_taxonomy->set_count($term_taxonomy->count() - 1);
-            $term_taxonomy->save();
-        }
-        return $this->remove_relationship_to($cpt_model_object_event, $term_taxonomy, 'Term_Taxonomy');
-    }
-
-
-    /**
-     * This is a wrapper for the WordPress get_the_post_thumbnail() function that returns the feature image for the
-     * given CPT ID.  It accepts the same params as what get_the_post_thumbnail() accepts.
-     *
-     * @link   http://codex.wordpress.org/Function_Reference/get_the_post_thumbnail
-     * @access public
-     * @param int          $id   the ID for the cpt we want the feature image for
-     * @param string|array $size (optional) Image size. Defaults to 'post-thumbnail' but can also be a 2-item array
-     *                           representing width and height in pixels (i.e. array(32,32) ).
-     * @param string|array $attr Optional. Query string or array of attributes.
-     * @return string HTML image element
-     */
-    public function get_feature_image($id, $size = 'thumbnail', $attr = '')
-    {
-        return get_the_post_thumbnail($id, $size, $attr);
-    }
-
-
-    /**
-     * Just a handy way to get the list of post statuses currently registered with WP.
-     *
-     * @global array $wp_post_statuses set in wp core for storing all the post stati
-     * @return array
-     */
-    public function get_post_statuses()
-    {
-        global $wp_post_statuses;
-        $statuses = array();
-        foreach ($wp_post_statuses as $post_status => $args_object) {
-            $statuses[ $post_status ] = $args_object->label;
-        }
-        return $statuses;
-    }
-
-
-    /**
-     * public method that can be used to retrieve the protected status array on the instantiated cpt model
-     *
-     * @return array array of statuses.
-     */
-    public function get_status_array()
-    {
-        $statuses = $this->get_post_statuses();
-        // first the global filter
-        $statuses = apply_filters('FHEE_EEM_CPT_Base__get_status_array', $statuses);
-        // now the class specific filter
-        $statuses = apply_filters('FHEE_EEM_' . get_class($this) . '__get_status_array', $statuses);
-        return $statuses;
-    }
-
-
-    /**
-     * this returns the post statuses that are NOT the default wordpress status
-     *
-     * @return array
-     */
-    public function get_custom_post_statuses()
-    {
-        $new_stati = array();
-        foreach ($this->_custom_stati as $status => $props) {
-            $new_stati[ $status ] = $props['label'];
-        }
-        return $new_stati;
-    }
-
-
-    /**
-     * Creates a child of EE_CPT_Base given a WP_Post or array of wpdb results which
-     * are a row from the posts table. If we're missing any fields required for the model,
-     * we just fetch the entire entry from the DB (ie, if you want to use this to save DB queries,
-     * make sure you are attaching all the model's fields onto the post)
-     *
-     * @param WP_Post|array $post
-     * @return EE_Base_Class|EE_Soft_Delete_Base_Class
-     */
-    public function instantiate_class_from_post_object_orig($post)
-    {
-        $post = (array) $post;
-        $has_all_necessary_fields_for_table = true;
-        // check if the post has fields on the meta table already
-        foreach ($this->_get_other_tables() as $table_obj) {
-            $fields_for_that_table = $this->_get_fields_for_table($table_obj->get_table_alias());
-            foreach ($fields_for_that_table as $field_obj) {
-                if (! isset($post[ $field_obj->get_table_column() ])
-                    && ! isset($post[ $field_obj->get_qualified_column() ])
-                ) {
-                    $has_all_necessary_fields_for_table = false;
-                }
-            }
-        }
-        // if we don't have all the fields we need, then just fetch the proper model from the DB
-        if (! $has_all_necessary_fields_for_table) {
-            return $this->get_one_by_ID($post['ID']);
-        } else {
-            return $this->instantiate_class_from_array_or_object($post);
-        }
-    }
-
-
-    /**
-     * @param null $post
-     * @return EE_Base_Class|EE_Soft_Delete_Base_Class
-     */
-    public function instantiate_class_from_post_object($post = null)
-    {
-        if (empty($post)) {
-            global $post;
-        }
-        $post = (array) $post;
-        $tables_needing_to_be_queried = array();
-        // check if the post has fields on the meta table already
-        foreach ($this->get_tables() as $table_obj) {
-            $fields_for_that_table = $this->_get_fields_for_table($table_obj->get_table_alias());
-            foreach ($fields_for_that_table as $field_obj) {
-                if (! isset($post[ $field_obj->get_table_column() ])
-                    && ! isset($post[ $field_obj->get_qualified_column() ])
-                ) {
-                    $tables_needing_to_be_queried[ $table_obj->get_table_alias() ] = $table_obj;
-                }
-            }
-        }
-        // if we don't have all the fields we need, then just fetch the proper model from the DB
-        if ($tables_needing_to_be_queried) {
-            if (count($tables_needing_to_be_queried) == 1
-                && reset($tables_needing_to_be_queried)
-                   instanceof
-                   EE_Secondary_Table
-            ) {
-                // so we're only missing data from a secondary table. Well that's not too hard to query for
-                $table_to_query = reset($tables_needing_to_be_queried);
-                $missing_data = $this->_do_wpdb_query(
-                    'get_row',
-                    array(
-                        'SELECT * FROM '
-                        . $table_to_query->get_table_name()
-                        . ' WHERE '
-                        . $table_to_query->get_fk_on_table()
-                        . ' = '
-                        . $post['ID'],
-                        ARRAY_A,
-                    )
-                );
-                if (! empty($missing_data)) {
-                    $post = array_merge($post, $missing_data);
-                }
-            } else {
-                return $this->get_one_by_ID($post['ID']);
-            }
-        }
-        return $this->instantiate_class_from_array_or_object($post);
-    }
-
-
-    /**
-     * Gets the post type associated with this
-     *
-     * @throws EE_Error
-     * @return string
-     */
-    public function post_type()
-    {
-        $post_type_field = null;
-        foreach ($this->field_settings(true) as $field_obj) {
-            if ($field_obj instanceof EE_WP_Post_Type_Field) {
-                $post_type_field = $field_obj;
-                break;
-            }
-        }
-        if ($post_type_field == null) {
-            throw new EE_Error(
-                sprintf(
-                    __(
-                        "CPT Model %s should have a field of type EE_WP_Post_Type, but doesnt",
-                        "event_espresso"
-                    ),
-                    get_class($this)
-                )
-            );
-        }
-        return $post_type_field->get_default_value();
-    }
+	const EVENT_CATEGORY_TAXONOMY = 'espresso_event_categories';
+
+	/**
+	 * @var string post_status_publish - the wp post status for published cpts
+	 */
+	const post_status_publish = 'publish';
+
+	/**
+	 * @var string post_status_future - the wp post status for scheduled cpts
+	 */
+	const post_status_future = 'future';
+
+	/**
+	 * @var string post_status_draft - the wp post status for draft cpts
+	 */
+	const post_status_draft = 'draft';
+
+	/**
+	 * @var string post_status_pending - the wp post status for pending cpts
+	 */
+	const post_status_pending = 'pending';
+
+	/**
+	 * @var string post_status_private - the wp post status for private cpts
+	 */
+	const post_status_private = 'private';
+
+	/**
+	 * @var string post_status_trashed - the wp post status for trashed cpts
+	 */
+	const post_status_trashed = 'trash';
+
+	/**
+	 * This is an array of custom statuses for the given CPT model (modified by children)
+	 * format:
+	 * array(
+	 *        'status_name' => array(
+	 *            'label' => __('Status Name', 'event_espresso'),
+	 *            'public' => TRUE //whether a public status or not.
+	 *        )
+	 * )
+	 *
+	 * @var array
+	 */
+	protected $_custom_stati = array();
+
+
+	/**
+	 * Adds a relationship to Term_Taxonomy for each CPT_Base
+	 *
+	 * @param string $timezone
+	 * @throws \EE_Error
+	 */
+	protected function __construct($timezone = null)
+	{
+		// adds a relationship to Term_Taxonomy for all these models. For this to work
+		// Term_Relationship must have a relation to each model subclassing EE_CPT_Base explicitly
+		// eg, in EEM_Term_Relationship, inside the _model_relations array, there must be an entry
+		// with key equalling the subclassing model's model name (eg 'Event' or 'Venue'), and the value
+		// must also be new EE_HABTM_Relation('Term_Relationship');
+		$this->_model_relations['Term_Taxonomy'] = new EE_HABTM_Relation('Term_Relationship');
+		$primary_table_name = null;
+		// add  the common _status field to all CPT primary tables.
+		foreach ($this->_tables as $alias => $table_obj) {
+			if ($table_obj instanceof EE_Primary_Table) {
+				$primary_table_name = $alias;
+			}
+		}
+		// set default wp post statuses if child has not already set.
+		if (! isset($this->_fields[ $primary_table_name ]['status'])) {
+			$this->_fields[ $primary_table_name ]['status'] = new EE_WP_Post_Status_Field(
+				'post_status',
+				__("Event Status", "event_espresso"),
+				false,
+				'draft'
+			);
+		}
+		if (! isset($this->_fields[ $primary_table_name ]['to_ping'])) {
+			$this->_fields[ $primary_table_name ]['to_ping'] = new EE_DB_Only_Text_Field(
+				'to_ping',
+				__('To Ping', 'event_espresso'),
+				false,
+				''
+			);
+		}
+		if (! isset($this->_fields[ $primary_table_name ]['pinged'])) {
+			$this->_fields[ $primary_table_name ]['pinged'] = new EE_DB_Only_Text_Field(
+				'pinged',
+				__('Pinged', 'event_espresso'),
+				false,
+				''
+			);
+		}
+		if (! isset($this->_fields[ $primary_table_name ]['comment_status'])) {
+			$this->_fields[ $primary_table_name ]['comment_status'] = new EE_Plain_Text_Field(
+				'comment_status',
+				__('Comment Status', 'event_espresso'),
+				false,
+				'open'
+			);
+		}
+		if (! isset($this->_fields[ $primary_table_name ]['ping_status'])) {
+			$this->_fields[ $primary_table_name ]['ping_status'] = new EE_Plain_Text_Field(
+				'ping_status',
+				__('Ping Status', 'event_espresso'),
+				false,
+				'open'
+			);
+		}
+		if (! isset($this->_fields[ $primary_table_name ]['post_content_filtered'])) {
+			$this->_fields[ $primary_table_name ]['post_content_filtered'] = new EE_DB_Only_Text_Field(
+				'post_content_filtered',
+				__('Post Content Filtered', 'event_espresso'),
+				false,
+				''
+			);
+		}
+		if (! isset($this->_model_relations['Post_Meta'])) {
+			// don't block deletes though because we want to maintain the current behaviour
+			$this->_model_relations['Post_Meta'] = new EE_Has_Many_Relation(false);
+		}
+		if (! $this->_minimum_where_conditions_strategy instanceof EE_Default_Where_Conditions) {
+			// nothing was set during child constructor, so set default
+			$this->_minimum_where_conditions_strategy = new EE_CPT_Minimum_Where_Conditions($this->post_type());
+		}
+		if (! $this->_default_where_conditions_strategy instanceof EE_Default_Where_Conditions) {
+			// nothing was set during child constructor, so set default
+			// it's ok for child classes to specify this, but generally this is more DRY
+			$this->_default_where_conditions_strategy = new EE_CPT_Where_Conditions($this->post_type());
+		}
+		parent::__construct($timezone);
+	}
+
+
+	/**
+	 * @return array
+	 */
+	public function public_event_stati()
+	{
+		// @see wp-includes/post.php
+		return get_post_stati(array('public' => true));
+	}
+
+
+	/**
+	 * Searches for field on this model of type 'deleted_flag'. if it is found,
+	 * returns it's name. BUT That doesn't apply to CPTs. We should instead use post_status_field_name
+	 *
+	 * @return string
+	 * @throws EE_Error
+	 */
+	public function deleted_field_name()
+	{
+		throw new EE_Error(
+			sprintf(
+				__(
+					"EEM_CPT_Base should nto call deleted_field_name! It should instead use post_status_field_name",
+					"event_espresso"
+				)
+			)
+		);
+	}
+
+
+	/**
+	 * Gets the field's name that sets the post status
+	 *
+	 * @return string
+	 * @throws EE_Error
+	 */
+	public function post_status_field_name()
+	{
+		$field = $this->get_a_field_of_type('EE_WP_Post_Status_Field');
+		if ($field) {
+			return $field->get_name();
+		} else {
+			throw new EE_Error(
+				sprintf(
+					__(
+						'We are trying to find the post status flag field on %s, but none was found. Are you sure there is a field of type EE_Trashed_Flag_Field in %s constructor?',
+						'event_espresso'
+					),
+					get_class($this),
+					get_class($this)
+				)
+			);
+		}
+	}
+
+
+	/**
+	 * Alters the query params so that only trashed/soft-deleted items are considered
+	 *
+	 * @param array $query_params like EEM_Base::get_all's $query_params
+	 * @return array like EEM_Base::get_all's $query_params
+	 */
+	protected function _alter_query_params_so_only_trashed_items_included($query_params)
+	{
+		$post_status_field_name = $this->post_status_field_name();
+		$query_params[0][ $post_status_field_name ] = self::post_status_trashed;
+		return $query_params;
+	}
+
+
+	/**
+	 * Alters the query params so each item's deleted status is ignored.
+	 *
+	 * @param array $query_params
+	 * @return array
+	 */
+	protected function _alter_query_params_so_deleted_and_undeleted_items_included($query_params)
+	{
+		$query_params['default_where_conditions'] = 'minimum';
+		return $query_params;
+	}
+
+
+	/**
+	 * Performs deletes or restores on items. Both soft-deleted and non-soft-deleted items considered.
+	 *
+	 * @param boolean $delete       true to indicate deletion, false to indicate restoration
+	 * @param array   $query_params like EEM_Base::get_all
+	 * @return boolean success
+	 */
+	public function delete_or_restore($delete = true, $query_params = array())
+	{
+		$post_status_field_name = $this->post_status_field_name();
+		$query_params = $this->_alter_query_params_so_deleted_and_undeleted_items_included($query_params);
+		$new_status = $delete ? self::post_status_trashed : 'draft';
+		if ($this->update(array($post_status_field_name => $new_status), $query_params)) {
+			return true;
+		} else {
+			return false;
+		}
+	}
+
+
+	/**
+	 * meta_table
+	 * returns first EE_Secondary_Table table name
+	 *
+	 * @access public
+	 * @return string
+	 */
+	public function meta_table()
+	{
+		$meta_table = $this->_get_other_tables();
+		$meta_table = reset($meta_table);
+		return $meta_table instanceof EE_Secondary_Table ? $meta_table->get_table_name() : null;
+	}
+
+
+	/**
+	 * This simply returns an array of the meta table fields (useful for when we just need to update those fields)
+	 *
+	 * @param  bool $all triggers whether we include DB_Only fields or JUST non DB_Only fields.  Defaults to false (no
+	 *                   db only fields)
+	 * @return array
+	 */
+	public function get_meta_table_fields($all = false)
+	{
+		$all_fields = $fields_to_return = array();
+		foreach ($this->_tables as $alias => $table_obj) {
+			if ($table_obj instanceof EE_Secondary_Table) {
+				$all_fields = array_merge($this->_get_fields_for_table($alias), $all_fields);
+			}
+		}
+		if (! $all) {
+			foreach ($all_fields as $name => $obj) {
+				if ($obj instanceof EE_DB_Only_Field_Base) {
+					continue;
+				}
+				$fields_to_return[] = $name;
+			}
+		} else {
+			$fields_to_return = array_keys($all_fields);
+		}
+		return $fields_to_return;
+	}
+
+
+	/**
+	 * Adds an event category with the specified name and description to the specified
+	 * $cpt_model_object. Intelligently adds a term if necessary, and adds a term_taxonomy if necessary,
+	 * and adds an entry in the term_relationship if necessary.
+	 *
+	 * @param EE_CPT_Base $cpt_model_object
+	 * @param string      $category_name (used to derive the term slug too)
+	 * @param string      $category_description
+	 * @param int         $parent_term_taxonomy_id
+	 * @return EE_Term_Taxonomy
+	 */
+	public function add_event_category(
+		EE_CPT_Base $cpt_model_object,
+		$category_name,
+		$category_description = '',
+		$parent_term_taxonomy_id = null
+	) {
+		// create term
+		require_once(EE_MODELS . 'EEM_Term.model.php');
+		// first, check for a term by the same name or slug
+		$category_slug = sanitize_title($category_name);
+		$term = EEM_Term::instance()->get_one(
+			array(
+				array(
+					'OR' => array(
+						'name' => $category_name,
+						'slug' => $category_slug,
+					),
+					'Term_Taxonomy.taxonomy' => self::EVENT_CATEGORY_TAXONOMY
+				),
+			)
+		);
+		if (! $term) {
+			$term = EE_Term::new_instance(
+				array(
+					'name' => $category_name,
+					'slug' => $category_slug,
+				)
+			);
+			$term->save();
+		}
+		// make sure there's a term-taxonomy entry too
+		require_once(EE_MODELS . 'EEM_Term_Taxonomy.model.php');
+		$term_taxonomy = EEM_Term_Taxonomy::instance()->get_one(
+			array(
+				array(
+					'term_id'  => $term->ID(),
+					'taxonomy' => self::EVENT_CATEGORY_TAXONOMY,
+				),
+			)
+		);
+		/** @var $term_taxonomy EE_Term_Taxonomy */
+		if (! $term_taxonomy) {
+			$term_taxonomy = EE_Term_Taxonomy::new_instance(
+				array(
+					'term_id'     => $term->ID(),
+					'taxonomy'    => self::EVENT_CATEGORY_TAXONOMY,
+					'description' => $category_description,
+					'term_count'       => 1,
+					'parent'      => $parent_term_taxonomy_id,
+				)
+			);
+			$term_taxonomy->save();
+		} else {
+			$term_taxonomy->set_count($term_taxonomy->count() + 1);
+			$term_taxonomy->save();
+		}
+		return $this->add_relationship_to($cpt_model_object, $term_taxonomy, 'Term_Taxonomy');
+	}
+
+
+	/**
+	 * Removed the category specified by name as having a relation to this event.
+	 * Does not remove the term or term_taxonomy.
+	 *
+	 * @param EE_CPT_Base $cpt_model_object_event
+	 * @param string      $category_name name of the event category (term)
+	 * @return bool
+	 */
+	public function remove_event_category(EE_CPT_Base $cpt_model_object_event, $category_name)
+	{
+		// find the term_taxonomy by that name
+		$term_taxonomy = $this->get_first_related(
+			$cpt_model_object_event,
+			'Term_Taxonomy',
+			array(array('Term.name' => $category_name, 'taxonomy' => self::EVENT_CATEGORY_TAXONOMY))
+		);
+		/** @var $term_taxonomy EE_Term_Taxonomy */
+		if ($term_taxonomy) {
+			$term_taxonomy->set_count($term_taxonomy->count() - 1);
+			$term_taxonomy->save();
+		}
+		return $this->remove_relationship_to($cpt_model_object_event, $term_taxonomy, 'Term_Taxonomy');
+	}
+
+
+	/**
+	 * This is a wrapper for the WordPress get_the_post_thumbnail() function that returns the feature image for the
+	 * given CPT ID.  It accepts the same params as what get_the_post_thumbnail() accepts.
+	 *
+	 * @link   http://codex.wordpress.org/Function_Reference/get_the_post_thumbnail
+	 * @access public
+	 * @param int          $id   the ID for the cpt we want the feature image for
+	 * @param string|array $size (optional) Image size. Defaults to 'post-thumbnail' but can also be a 2-item array
+	 *                           representing width and height in pixels (i.e. array(32,32) ).
+	 * @param string|array $attr Optional. Query string or array of attributes.
+	 * @return string HTML image element
+	 */
+	public function get_feature_image($id, $size = 'thumbnail', $attr = '')
+	{
+		return get_the_post_thumbnail($id, $size, $attr);
+	}
+
+
+	/**
+	 * Just a handy way to get the list of post statuses currently registered with WP.
+	 *
+	 * @global array $wp_post_statuses set in wp core for storing all the post stati
+	 * @return array
+	 */
+	public function get_post_statuses()
+	{
+		global $wp_post_statuses;
+		$statuses = array();
+		foreach ($wp_post_statuses as $post_status => $args_object) {
+			$statuses[ $post_status ] = $args_object->label;
+		}
+		return $statuses;
+	}
+
+
+	/**
+	 * public method that can be used to retrieve the protected status array on the instantiated cpt model
+	 *
+	 * @return array array of statuses.
+	 */
+	public function get_status_array()
+	{
+		$statuses = $this->get_post_statuses();
+		// first the global filter
+		$statuses = apply_filters('FHEE_EEM_CPT_Base__get_status_array', $statuses);
+		// now the class specific filter
+		$statuses = apply_filters('FHEE_EEM_' . get_class($this) . '__get_status_array', $statuses);
+		return $statuses;
+	}
+
+
+	/**
+	 * this returns the post statuses that are NOT the default wordpress status
+	 *
+	 * @return array
+	 */
+	public function get_custom_post_statuses()
+	{
+		$new_stati = array();
+		foreach ($this->_custom_stati as $status => $props) {
+			$new_stati[ $status ] = $props['label'];
+		}
+		return $new_stati;
+	}
+
+
+	/**
+	 * Creates a child of EE_CPT_Base given a WP_Post or array of wpdb results which
+	 * are a row from the posts table. If we're missing any fields required for the model,
+	 * we just fetch the entire entry from the DB (ie, if you want to use this to save DB queries,
+	 * make sure you are attaching all the model's fields onto the post)
+	 *
+	 * @param WP_Post|array $post
+	 * @return EE_Base_Class|EE_Soft_Delete_Base_Class
+	 */
+	public function instantiate_class_from_post_object_orig($post)
+	{
+		$post = (array) $post;
+		$has_all_necessary_fields_for_table = true;
+		// check if the post has fields on the meta table already
+		foreach ($this->_get_other_tables() as $table_obj) {
+			$fields_for_that_table = $this->_get_fields_for_table($table_obj->get_table_alias());
+			foreach ($fields_for_that_table as $field_obj) {
+				if (! isset($post[ $field_obj->get_table_column() ])
+					&& ! isset($post[ $field_obj->get_qualified_column() ])
+				) {
+					$has_all_necessary_fields_for_table = false;
+				}
+			}
+		}
+		// if we don't have all the fields we need, then just fetch the proper model from the DB
+		if (! $has_all_necessary_fields_for_table) {
+			return $this->get_one_by_ID($post['ID']);
+		} else {
+			return $this->instantiate_class_from_array_or_object($post);
+		}
+	}
+
+
+	/**
+	 * @param null $post
+	 * @return EE_Base_Class|EE_Soft_Delete_Base_Class
+	 */
+	public function instantiate_class_from_post_object($post = null)
+	{
+		if (empty($post)) {
+			global $post;
+		}
+		$post = (array) $post;
+		$tables_needing_to_be_queried = array();
+		// check if the post has fields on the meta table already
+		foreach ($this->get_tables() as $table_obj) {
+			$fields_for_that_table = $this->_get_fields_for_table($table_obj->get_table_alias());
+			foreach ($fields_for_that_table as $field_obj) {
+				if (! isset($post[ $field_obj->get_table_column() ])
+					&& ! isset($post[ $field_obj->get_qualified_column() ])
+				) {
+					$tables_needing_to_be_queried[ $table_obj->get_table_alias() ] = $table_obj;
+				}
+			}
+		}
+		// if we don't have all the fields we need, then just fetch the proper model from the DB
+		if ($tables_needing_to_be_queried) {
+			if (count($tables_needing_to_be_queried) == 1
+				&& reset($tables_needing_to_be_queried)
+				   instanceof
+				   EE_Secondary_Table
+			) {
+				// so we're only missing data from a secondary table. Well that's not too hard to query for
+				$table_to_query = reset($tables_needing_to_be_queried);
+				$missing_data = $this->_do_wpdb_query(
+					'get_row',
+					array(
+						'SELECT * FROM '
+						. $table_to_query->get_table_name()
+						. ' WHERE '
+						. $table_to_query->get_fk_on_table()
+						. ' = '
+						. $post['ID'],
+						ARRAY_A,
+					)
+				);
+				if (! empty($missing_data)) {
+					$post = array_merge($post, $missing_data);
+				}
+			} else {
+				return $this->get_one_by_ID($post['ID']);
+			}
+		}
+		return $this->instantiate_class_from_array_or_object($post);
+	}
+
+
+	/**
+	 * Gets the post type associated with this
+	 *
+	 * @throws EE_Error
+	 * @return string
+	 */
+	public function post_type()
+	{
+		$post_type_field = null;
+		foreach ($this->field_settings(true) as $field_obj) {
+			if ($field_obj instanceof EE_WP_Post_Type_Field) {
+				$post_type_field = $field_obj;
+				break;
+			}
+		}
+		if ($post_type_field == null) {
+			throw new EE_Error(
+				sprintf(
+					__(
+						"CPT Model %s should have a field of type EE_WP_Post_Type, but doesnt",
+						"event_espresso"
+					),
+					get_class($this)
+				)
+			);
+		}
+		return $post_type_field->get_default_value();
+	}
 }

core/EE_Cron_Tasks.core.php

Unused Use Statements -1 removed lines

@@ -2,7 +2,6 @@
 
 use EventEspresso\core\exceptions\InvalidDataTypeException;
 use EventEspresso\core\exceptions\InvalidInterfaceException;
-use EventEspresso\core\services\loaders\Loader;
 use EventEspresso\core\services\loaders\LoaderFactory;
 
 /**

Indentation +586 added lines, -586 removed lines

@@ -15,590 +15,590 @@
 class EE_Cron_Tasks extends EE_Base
 {
 
-    /**
-     * WordPress doesn't allow duplicate crons within 10 minutes of the original,
-     * so we'll set our retry time for just over 10 minutes to avoid that
-     */
-    const reschedule_timeout = 605;
-
-
-    /**
-     * @var EE_Cron_Tasks
-     */
-    private static $_instance;
-
-
-    /**
-     * @return EE_Cron_Tasks
-     * @throws ReflectionException
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     */
-    public static function instance()
-    {
-        if (! self::$_instance instanceof EE_Cron_Tasks) {
-            self::$_instance = new self();
-        }
-        return self::$_instance;
-    }
-
-
-    /**
-     * @access private
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     * @throws InvalidArgumentException
-     * @throws EE_Error
-     * @throws ReflectionException
-     */
-    private function __construct()
-    {
-        do_action('AHEE_log', __CLASS__, __FUNCTION__);
-        // verify that WP Cron is enabled
-        if (defined('DISABLE_WP_CRON')
-            && DISABLE_WP_CRON
-            && is_admin()
-            && ! get_option('ee_disabled_wp_cron_check')
-        ) {
-            /**
-             * This needs to be delayed until after the config is loaded because EE_Cron_Tasks is constructed before
-             * config is loaded.
-             * This is intentionally using a anonymous function so that its not easily de-registered.  Client code
-             * wanting to not have this functionality can just register its own action at a priority after this one to
-             * reverse any changes.
-             */
-            add_action(
-                'AHEE__EE_System__load_core_configuration__complete',
-                function () {
-                    EE_Registry::instance()->NET_CFG->core->do_messages_on_same_request = true;
-                    EE_Registry::instance()->NET_CFG->update_config(true, false);
-                    add_option('ee_disabled_wp_cron_check', 1, '', false);
-                }
-            );
-        }
-        // UPDATE TRANSACTION WITH PAYMENT
-        add_action(
-            'AHEE__EE_Cron_Tasks__update_transaction_with_payment_2',
-            array('EE_Cron_Tasks', 'setup_update_for_transaction_with_payment'),
-            10,
-            2
-        );
-        // ABANDONED / EXPIRED TRANSACTION CHECK
-        add_action(
-            'AHEE__EE_Cron_Tasks__expired_transaction_check',
-            array('EE_Cron_Tasks', 'expired_transaction_check'),
-            10,
-            1
-        );
-        // CLEAN OUT JUNK TRANSACTIONS AND RELATED DATA
-        add_action(
-            'AHEE__EE_Cron_Tasks__clean_up_junk_transactions',
-            array('EE_Cron_Tasks', 'clean_out_junk_transactions')
-        );
-        // logging
-        add_action(
-            'AHEE__EE_System__load_core_configuration__complete',
-            array('EE_Cron_Tasks', 'log_scheduled_ee_crons')
-        );
-        EE_Registry::instance()->load_lib('Messages_Scheduler');
-        // clean out old gateway logs
-        add_action(
-            'AHEE_EE_Cron_Tasks__clean_out_old_gateway_logs',
-            array('EE_Cron_Tasks', 'clean_out_old_gateway_logs')
-        );
-    }
-
-
-    /**
-     * @access protected
-     * @return void
-     */
-    public static function log_scheduled_ee_crons()
-    {
-        $ee_crons = array(
-            'AHEE__EE_Cron_Tasks__update_transaction_with_payment',
-            'AHEE__EE_Cron_Tasks__finalize_abandoned_transactions',
-            'AHEE__EE_Cron_Tasks__clean_up_junk_transactions',
-        );
-        $crons = (array) get_option('cron');
-        if (! is_array($crons)) {
-            return;
-        }
-        foreach ($crons as $timestamp => $cron) {
-            /** @var array[] $cron */
-            foreach ($ee_crons as $ee_cron) {
-                if (isset($cron[ $ee_cron ]) && is_array($cron[ $ee_cron ])) {
-                    do_action('AHEE_log', __CLASS__, __FUNCTION__, $ee_cron, 'scheduled EE cron');
-                    foreach ($cron[ $ee_cron ] as $ee_cron_details) {
-                        if (! empty($ee_cron_details['args'])) {
-                            do_action(
-                                'AHEE_log',
-                                __CLASS__,
-                                __FUNCTION__,
-                                print_r($ee_cron_details['args'], true),
-                                "{$ee_cron} args"
-                            );
-                        }
-                    }
-                }
-            }
-        }
-    }
-
-
-    /**
-     * reschedule_cron_for_transactions_if_maintenance_mode
-     * if Maintenance Mode is active, this will reschedule a cron to run again in 10 minutes
-     *
-     * @param string $cron_task
-     * @param array  $TXN_IDs
-     * @return bool
-     * @throws DomainException
-     */
-    public static function reschedule_cron_for_transactions_if_maintenance_mode($cron_task, array $TXN_IDs)
-    {
-        if (! method_exists('EE_Cron_Tasks', $cron_task)) {
-            throw new DomainException(
-                sprintf(
-                    __('"%1$s" is not valid method on EE_Cron_Tasks.', 'event_espresso'),
-                    $cron_task
-                )
-            );
-        }
-        // reschedule the cron if we can't hit the db right now
-        if (! EE_Maintenance_Mode::instance()->models_can_query()) {
-            foreach ($TXN_IDs as $TXN_ID => $additional_vars) {
-                // ensure $additional_vars is an array
-                $additional_vars = is_array($additional_vars) ? $additional_vars : array($additional_vars);
-                // reset cron job for the TXN
-                call_user_func_array(
-                    array('EE_Cron_Tasks', $cron_task),
-                    array_merge(
-                        array(
-                            time() + (10 * MINUTE_IN_SECONDS),
-                            $TXN_ID,
-                        ),
-                        $additional_vars
-                    )
-                );
-            }
-            return true;
-        }
-        return false;
-    }
-
-
-
-
-    /****************  UPDATE TRANSACTION WITH PAYMENT ****************/
-
-
-    /**
-     * array of TXN IDs and the payment
-     *
-     * @var array
-     */
-    protected static $_update_transactions_with_payment = array();
-
-
-    /**
-     * schedule_update_transaction_with_payment
-     * sets a wp_schedule_single_event() for updating any TXNs that may
-     * require updating due to recently received payments
-     *
-     * @param int $timestamp
-     * @param int $TXN_ID
-     * @param int $PAY_ID
-     */
-    public static function schedule_update_transaction_with_payment(
-        $timestamp,
-        $TXN_ID,
-        $PAY_ID
-    ) {
-        do_action('AHEE_log', __CLASS__, __FUNCTION__);
-        // validate $TXN_ID and $timestamp
-        $TXN_ID = absint($TXN_ID);
-        $timestamp = absint($timestamp);
-        if ($TXN_ID && $timestamp) {
-            wp_schedule_single_event(
-                $timestamp,
-                'AHEE__EE_Cron_Tasks__update_transaction_with_payment_2',
-                array($TXN_ID, $PAY_ID)
-            );
-        }
-    }
-
-
-    /**
-     * setup_update_for_transaction_with_payment
-     * this is the callback for the action hook:
-     * 'AHEE__EE_Cron_Tasks__update_transaction_with_payment'
-     * which is setup by EE_Cron_Tasks::schedule_update_transaction_with_payment().
-     * The passed TXN_ID and associated payment gets added to an array, and then
-     * the EE_Cron_Tasks::update_transaction_with_payment() function is hooked into
-     * 'shutdown' which will actually handle the processing of any
-     * transactions requiring updating, because doing so now would be too early
-     * and the required resources may not be available
-     *
-     * @param int $TXN_ID
-     * @param int $PAY_ID
-     */
-    public static function setup_update_for_transaction_with_payment($TXN_ID = 0, $PAY_ID = 0)
-    {
-        do_action('AHEE_log', __CLASS__, __FUNCTION__, $TXN_ID, '$TXN_ID');
-        if (absint($TXN_ID)) {
-            self::$_update_transactions_with_payment[ $TXN_ID ] = $PAY_ID;
-            add_action(
-                'shutdown',
-                array('EE_Cron_Tasks', 'update_transaction_with_payment'),
-                5
-            );
-        }
-    }
-
-
-    /**
-     * update_transaction_with_payment
-     * loops through the self::$_abandoned_transactions array
-     * and attempts to finalize any TXNs that have not been completed
-     * but have had their sessions expired, most likely due to a user not
-     * returning from an off-site payment gateway
-     *
-     * @throws EE_Error
-     * @throws DomainException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     * @throws InvalidArgumentException
-     * @throws ReflectionException
-     * @throws RuntimeException
-     */
-    public static function update_transaction_with_payment()
-    {
-        do_action('AHEE_log', __CLASS__, __FUNCTION__);
-        if (// are there any TXNs that need cleaning up ?
-            empty(self::$_update_transactions_with_payment)
-            // reschedule the cron if we can't hit the db right now
-            || EE_Cron_Tasks::reschedule_cron_for_transactions_if_maintenance_mode(
-                'schedule_update_transaction_with_payment',
-                self::$_update_transactions_with_payment
-            )
-        ) {
-            return;
-        }
-        /** @type EE_Payment_Processor $payment_processor */
-        $payment_processor = EE_Registry::instance()->load_core('Payment_Processor');
-        // set revisit flag for payment processor
-        $payment_processor->set_revisit();
-        // load EEM_Transaction
-        EE_Registry::instance()->load_model('Transaction');
-        foreach (self::$_update_transactions_with_payment as $TXN_ID => $PAY_ID) {
-            // reschedule the cron if we can't hit the db right now
-            if (! EE_Maintenance_Mode::instance()->models_can_query()) {
-                // reset cron job for updating the TXN
-                EE_Cron_Tasks::schedule_update_transaction_with_payment(
-                    time() + EE_Cron_Tasks::reschedule_timeout,
-                    $TXN_ID,
-                    $PAY_ID
-                );
-                continue;
-            }
-            $transaction = EEM_Transaction::instance()->get_one_by_ID($TXN_ID);
-            $payment = EEM_Payment::instance()->get_one_by_ID($PAY_ID);
-            // verify transaction
-            if ($transaction instanceof EE_Transaction && $payment instanceof EE_Payment) {
-                // now try to update the TXN with any payments
-                $payment_processor->update_txn_based_on_payment($transaction, $payment, true, true);
-            }
-            unset(self::$_update_transactions_with_payment[ $TXN_ID ]);
-        }
-    }
-
-
-
-    /************  END OF UPDATE TRANSACTION WITH PAYMENT  ************/
-
-
-    /*****************  EXPIRED TRANSACTION CHECK *****************/
-
-
-    /**
-     * array of TXN IDs
-     *
-     * @var array
-     */
-    protected static $_expired_transactions = array();
-
-
-    /**
-     * schedule_expired_transaction_check
-     * sets a wp_schedule_single_event() for following up on TXNs after their session has expired
-     *
-     * @param int $timestamp
-     * @param int $TXN_ID
-     */
-    public static function schedule_expired_transaction_check(
-        $timestamp,
-        $TXN_ID
-    ) {
-        // validate $TXN_ID and $timestamp
-        $TXN_ID = absint($TXN_ID);
-        $timestamp = absint($timestamp);
-        if ($TXN_ID && $timestamp) {
-            wp_schedule_single_event(
-                $timestamp,
-                'AHEE__EE_Cron_Tasks__expired_transaction_check',
-                array($TXN_ID)
-            );
-        }
-    }
-
-
-    /**
-     * expired_transaction_check
-     * this is the callback for the action hook:
-     * 'AHEE__EE_Cron_Tasks__transaction_session_expiration_check'
-     * which is utilized by wp_schedule_single_event()
-     * in \EED_Single_Page_Checkout::_initialize_transaction().
-     * The passed TXN_ID gets added to an array, and then the
-     * process_expired_transactions() function is hooked into
-     * 'AHEE__EE_System__core_loaded_and_ready' which will actually handle the
-     * processing of any failed transactions, because doing so now would be
-     * too early and the required resources may not be available
-     *
-     * @param int $TXN_ID
-     */
-    public static function expired_transaction_check($TXN_ID = 0)
-    {
-        if (absint($TXN_ID)) {
-            self::$_expired_transactions[ $TXN_ID ] = $TXN_ID;
-            add_action(
-                'shutdown',
-                array('EE_Cron_Tasks', 'process_expired_transactions'),
-                5
-            );
-        }
-    }
-
-
-    /**
-     * process_expired_transactions
-     * loops through the self::$_expired_transactions array and processes any failed TXNs
-     *
-     * @throws EE_Error
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     * @throws InvalidArgumentException
-     * @throws ReflectionException
-     * @throws DomainException
-     * @throws RuntimeException
-     */
-    public static function process_expired_transactions()
-    {
-        if (// are there any TXNs that need cleaning up ?
-            empty(self::$_expired_transactions)
-            // reschedule the cron if we can't hit the db right now
-            || EE_Cron_Tasks::reschedule_cron_for_transactions_if_maintenance_mode(
-                'schedule_expired_transaction_check',
-                self::$_expired_transactions
-            )
-        ) {
-            return;
-        }
-        /** @type EE_Transaction_Processor $transaction_processor */
-        $transaction_processor = EE_Registry::instance()->load_class('Transaction_Processor');
-        // set revisit flag for txn processor
-        $transaction_processor->set_revisit();
-        // load EEM_Transaction
-        EE_Registry::instance()->load_model('Transaction');
-        foreach (self::$_expired_transactions as $TXN_ID) {
-            $transaction = EEM_Transaction::instance()->get_one_by_ID($TXN_ID);
-            // verify transaction and whether it is failed or not
-            if ($transaction instanceof EE_Transaction) {
-                switch ($transaction->status_ID()) {
-                    // Completed TXNs
-                    case EEM_Transaction::complete_status_code:
-                        do_action(
-                            'AHEE__EE_Cron_Tasks__process_expired_transactions__completed_transaction',
-                            $transaction
-                        );
-                        break;
-                    // Overpaid TXNs
-                    case EEM_Transaction::overpaid_status_code:
-                        do_action(
-                            'AHEE__EE_Cron_Tasks__process_expired_transactions__overpaid_transaction',
-                            $transaction
-                        );
-                        break;
-                    // Incomplete TXNs
-                    case EEM_Transaction::incomplete_status_code:
-                        do_action(
-                            'AHEE__EE_Cron_Tasks__process_expired_transactions__incomplete_transaction',
-                            $transaction
-                        );
-                        // todo : move business logic into EE_Transaction_Processor for finalizing abandoned transactions
-                        break;
-                    // Abandoned TXNs
-                    case EEM_Transaction::abandoned_status_code:
-                        // run hook before updating transaction, primarily so
-                        // EED_Ticket_Sales_Monitor::process_abandoned_transactions() can release reserved tickets
-                        do_action(
-                            'AHEE__EE_Cron_Tasks__process_expired_transactions__abandoned_transaction',
-                            $transaction
-                        );
-                        // don't finalize the TXN if it has already been completed
-                        if ($transaction->all_reg_steps_completed() !== true) {
-                            /** @type EE_Payment_Processor $payment_processor */
-                            $payment_processor = EE_Registry::instance()->load_core('Payment_Processor');
-                            // let's simulate an IPN here which will trigger any notifications that need to go out
-                            $payment_processor->update_txn_based_on_payment(
-                                $transaction,
-                                $transaction->last_payment(),
-                                true,
-                                true
-                            );
-                        }
-                        break;
-                    // Failed TXNs
-                    case EEM_Transaction::failed_status_code:
-                        do_action(
-                            'AHEE__EE_Cron_Tasks__process_expired_transactions__failed_transaction',
-                            $transaction
-                        );
-                        // todo :
-                        // perform garbage collection here and remove clean_out_junk_transactions()
-                        // $registrations = $transaction->registrations();
-                        // if (! empty($registrations)) {
-                        //     foreach ($registrations as $registration) {
-                        //         if ($registration instanceof EE_Registration) {
-                        //             $delete_registration = true;
-                        //             if ($registration->attendee() instanceof EE_Attendee) {
-                        //                 $delete_registration = false;
-                        //             }
-                        //             if ($delete_registration) {
-                        //                 $registration->delete_permanently();
-                        //                 $registration->delete_related_permanently();
-                        //             }
-                        //         }
-                        //     }
-                        // }
-                        break;
-                }
-            }
-            unset(self::$_expired_transactions[ $TXN_ID ]);
-        }
-    }
-
-
-
-    /*************  END OF EXPIRED TRANSACTION CHECK  *************/
-
-
-    /************* START CLEAN UP BOT TRANSACTIONS **********************/
-
-
-    /**
-     * callback for 'AHEE__EE_Cron_Tasks__clean_up_junk_transactions'
-     * which is setup during activation to run on an hourly cron
-     *
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     * @throws DomainException
-     */
-    public static function clean_out_junk_transactions()
-    {
-        if (EE_Maintenance_Mode::instance()->models_can_query()) {
-            EED_Ticket_Sales_Monitor::reset_reservation_counts();
-            EEM_Transaction::instance('')->delete_junk_transactions();
-            EEM_Registration::instance('')->delete_registrations_with_no_transaction();
-            EEM_Line_Item::instance('')->delete_line_items_with_no_transaction();
-        }
-    }
-
-
-    /**
-     * Deletes old gateway logs. After about a week we usually don't need them for debugging. But folks can filter that.
-     *
-     * @throws EE_Error
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     * @throws InvalidArgumentException
-     */
-    public static function clean_out_old_gateway_logs()
-    {
-        if (EE_Maintenance_Mode::instance()->models_can_query()) {
-            $reg_config = LoaderFactory::getLoader()->load('EE_Registration_Config');
-            $time_diff_for_comparison = apply_filters(
-                'FHEE__EE_Cron_Tasks__clean_out_old_gateway_logs__time_diff_for_comparison',
-                '-' . $reg_config->gateway_log_lifespan
-            );
-            EEM_Change_Log::instance()->delete_gateway_logs_older_than(new DateTime($time_diff_for_comparison));
-        }
-    }
-
-
-    /*****************  FINALIZE ABANDONED TRANSACTIONS *****************/
-
-
-    /**
-     * @var array
-     */
-    protected static $_abandoned_transactions = array();
-
-
-    /**
-     * @deprecated
-     * @param int $timestamp
-     * @param int $TXN_ID
-     */
-    public static function schedule_finalize_abandoned_transactions_check($timestamp, $TXN_ID)
-    {
-        EE_Cron_Tasks::schedule_expired_transaction_check($timestamp, $TXN_ID);
-    }
-
-
-    /**
-     * @deprecated
-     * @param int $TXN_ID
-     */
-    public static function check_for_abandoned_transactions($TXN_ID = 0)
-    {
-        EE_Cron_Tasks::expired_transaction_check($TXN_ID);
-    }
-
-
-    /**
-     * @deprecated
-     * @throws EE_Error
-     * @throws DomainException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     * @throws InvalidArgumentException
-     * @throws ReflectionException
-     * @throws RuntimeException
-     */
-    public static function finalize_abandoned_transactions()
-    {
-        do_action('AHEE_log', __CLASS__, __FUNCTION__);
-        if (// are there any TXNs that need cleaning up ?
-            empty(self::$_abandoned_transactions)
-            // reschedule the cron if we can't hit the db right now
-            || EE_Cron_Tasks::reschedule_cron_for_transactions_if_maintenance_mode(
-                'schedule_expired_transaction_check',
-                self::$_abandoned_transactions
-            )
-        ) {
-            return;
-        }
-        // combine our arrays of transaction IDs
-        self::$_expired_transactions = self::$_abandoned_transactions + self::$_expired_transactions;
-        // and deal with abandoned transactions here now...
-        EE_Cron_Tasks::process_expired_transactions();
-    }
-
-
-    /*************  END OF FINALIZE ABANDONED TRANSACTIONS  *************/
+	/**
+	 * WordPress doesn't allow duplicate crons within 10 minutes of the original,
+	 * so we'll set our retry time for just over 10 minutes to avoid that
+	 */
+	const reschedule_timeout = 605;
+
+
+	/**
+	 * @var EE_Cron_Tasks
+	 */
+	private static $_instance;
+
+
+	/**
+	 * @return EE_Cron_Tasks
+	 * @throws ReflectionException
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 */
+	public static function instance()
+	{
+		if (! self::$_instance instanceof EE_Cron_Tasks) {
+			self::$_instance = new self();
+		}
+		return self::$_instance;
+	}
+
+
+	/**
+	 * @access private
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidArgumentException
+	 * @throws EE_Error
+	 * @throws ReflectionException
+	 */
+	private function __construct()
+	{
+		do_action('AHEE_log', __CLASS__, __FUNCTION__);
+		// verify that WP Cron is enabled
+		if (defined('DISABLE_WP_CRON')
+			&& DISABLE_WP_CRON
+			&& is_admin()
+			&& ! get_option('ee_disabled_wp_cron_check')
+		) {
+			/**
+			 * This needs to be delayed until after the config is loaded because EE_Cron_Tasks is constructed before
+			 * config is loaded.
+			 * This is intentionally using a anonymous function so that its not easily de-registered.  Client code
+			 * wanting to not have this functionality can just register its own action at a priority after this one to
+			 * reverse any changes.
+			 */
+			add_action(
+				'AHEE__EE_System__load_core_configuration__complete',
+				function () {
+					EE_Registry::instance()->NET_CFG->core->do_messages_on_same_request = true;
+					EE_Registry::instance()->NET_CFG->update_config(true, false);
+					add_option('ee_disabled_wp_cron_check', 1, '', false);
+				}
+			);
+		}
+		// UPDATE TRANSACTION WITH PAYMENT
+		add_action(
+			'AHEE__EE_Cron_Tasks__update_transaction_with_payment_2',
+			array('EE_Cron_Tasks', 'setup_update_for_transaction_with_payment'),
+			10,
+			2
+		);
+		// ABANDONED / EXPIRED TRANSACTION CHECK
+		add_action(
+			'AHEE__EE_Cron_Tasks__expired_transaction_check',
+			array('EE_Cron_Tasks', 'expired_transaction_check'),
+			10,
+			1
+		);
+		// CLEAN OUT JUNK TRANSACTIONS AND RELATED DATA
+		add_action(
+			'AHEE__EE_Cron_Tasks__clean_up_junk_transactions',
+			array('EE_Cron_Tasks', 'clean_out_junk_transactions')
+		);
+		// logging
+		add_action(
+			'AHEE__EE_System__load_core_configuration__complete',
+			array('EE_Cron_Tasks', 'log_scheduled_ee_crons')
+		);
+		EE_Registry::instance()->load_lib('Messages_Scheduler');
+		// clean out old gateway logs
+		add_action(
+			'AHEE_EE_Cron_Tasks__clean_out_old_gateway_logs',
+			array('EE_Cron_Tasks', 'clean_out_old_gateway_logs')
+		);
+	}
+
+
+	/**
+	 * @access protected
+	 * @return void
+	 */
+	public static function log_scheduled_ee_crons()
+	{
+		$ee_crons = array(
+			'AHEE__EE_Cron_Tasks__update_transaction_with_payment',
+			'AHEE__EE_Cron_Tasks__finalize_abandoned_transactions',
+			'AHEE__EE_Cron_Tasks__clean_up_junk_transactions',
+		);
+		$crons = (array) get_option('cron');
+		if (! is_array($crons)) {
+			return;
+		}
+		foreach ($crons as $timestamp => $cron) {
+			/** @var array[] $cron */
+			foreach ($ee_crons as $ee_cron) {
+				if (isset($cron[ $ee_cron ]) && is_array($cron[ $ee_cron ])) {
+					do_action('AHEE_log', __CLASS__, __FUNCTION__, $ee_cron, 'scheduled EE cron');
+					foreach ($cron[ $ee_cron ] as $ee_cron_details) {
+						if (! empty($ee_cron_details['args'])) {
+							do_action(
+								'AHEE_log',
+								__CLASS__,
+								__FUNCTION__,
+								print_r($ee_cron_details['args'], true),
+								"{$ee_cron} args"
+							);
+						}
+					}
+				}
+			}
+		}
+	}
+
+
+	/**
+	 * reschedule_cron_for_transactions_if_maintenance_mode
+	 * if Maintenance Mode is active, this will reschedule a cron to run again in 10 minutes
+	 *
+	 * @param string $cron_task
+	 * @param array  $TXN_IDs
+	 * @return bool
+	 * @throws DomainException
+	 */
+	public static function reschedule_cron_for_transactions_if_maintenance_mode($cron_task, array $TXN_IDs)
+	{
+		if (! method_exists('EE_Cron_Tasks', $cron_task)) {
+			throw new DomainException(
+				sprintf(
+					__('"%1$s" is not valid method on EE_Cron_Tasks.', 'event_espresso'),
+					$cron_task
+				)
+			);
+		}
+		// reschedule the cron if we can't hit the db right now
+		if (! EE_Maintenance_Mode::instance()->models_can_query()) {
+			foreach ($TXN_IDs as $TXN_ID => $additional_vars) {
+				// ensure $additional_vars is an array
+				$additional_vars = is_array($additional_vars) ? $additional_vars : array($additional_vars);
+				// reset cron job for the TXN
+				call_user_func_array(
+					array('EE_Cron_Tasks', $cron_task),
+					array_merge(
+						array(
+							time() + (10 * MINUTE_IN_SECONDS),
+							$TXN_ID,
+						),
+						$additional_vars
+					)
+				);
+			}
+			return true;
+		}
+		return false;
+	}
+
+
+
+
+	/****************  UPDATE TRANSACTION WITH PAYMENT ****************/
+
+
+	/**
+	 * array of TXN IDs and the payment
+	 *
+	 * @var array
+	 */
+	protected static $_update_transactions_with_payment = array();
+
+
+	/**
+	 * schedule_update_transaction_with_payment
+	 * sets a wp_schedule_single_event() for updating any TXNs that may
+	 * require updating due to recently received payments
+	 *
+	 * @param int $timestamp
+	 * @param int $TXN_ID
+	 * @param int $PAY_ID
+	 */
+	public static function schedule_update_transaction_with_payment(
+		$timestamp,
+		$TXN_ID,
+		$PAY_ID
+	) {
+		do_action('AHEE_log', __CLASS__, __FUNCTION__);
+		// validate $TXN_ID and $timestamp
+		$TXN_ID = absint($TXN_ID);
+		$timestamp = absint($timestamp);
+		if ($TXN_ID && $timestamp) {
+			wp_schedule_single_event(
+				$timestamp,
+				'AHEE__EE_Cron_Tasks__update_transaction_with_payment_2',
+				array($TXN_ID, $PAY_ID)
+			);
+		}
+	}
+
+
+	/**
+	 * setup_update_for_transaction_with_payment
+	 * this is the callback for the action hook:
+	 * 'AHEE__EE_Cron_Tasks__update_transaction_with_payment'
+	 * which is setup by EE_Cron_Tasks::schedule_update_transaction_with_payment().
+	 * The passed TXN_ID and associated payment gets added to an array, and then
+	 * the EE_Cron_Tasks::update_transaction_with_payment() function is hooked into
+	 * 'shutdown' which will actually handle the processing of any
+	 * transactions requiring updating, because doing so now would be too early
+	 * and the required resources may not be available
+	 *
+	 * @param int $TXN_ID
+	 * @param int $PAY_ID
+	 */
+	public static function setup_update_for_transaction_with_payment($TXN_ID = 0, $PAY_ID = 0)
+	{
+		do_action('AHEE_log', __CLASS__, __FUNCTION__, $TXN_ID, '$TXN_ID');
+		if (absint($TXN_ID)) {
+			self::$_update_transactions_with_payment[ $TXN_ID ] = $PAY_ID;
+			add_action(
+				'shutdown',
+				array('EE_Cron_Tasks', 'update_transaction_with_payment'),
+				5
+			);
+		}
+	}
+
+
+	/**
+	 * update_transaction_with_payment
+	 * loops through the self::$_abandoned_transactions array
+	 * and attempts to finalize any TXNs that have not been completed
+	 * but have had their sessions expired, most likely due to a user not
+	 * returning from an off-site payment gateway
+	 *
+	 * @throws EE_Error
+	 * @throws DomainException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidArgumentException
+	 * @throws ReflectionException
+	 * @throws RuntimeException
+	 */
+	public static function update_transaction_with_payment()
+	{
+		do_action('AHEE_log', __CLASS__, __FUNCTION__);
+		if (// are there any TXNs that need cleaning up ?
+			empty(self::$_update_transactions_with_payment)
+			// reschedule the cron if we can't hit the db right now
+			|| EE_Cron_Tasks::reschedule_cron_for_transactions_if_maintenance_mode(
+				'schedule_update_transaction_with_payment',
+				self::$_update_transactions_with_payment
+			)
+		) {
+			return;
+		}
+		/** @type EE_Payment_Processor $payment_processor */
+		$payment_processor = EE_Registry::instance()->load_core('Payment_Processor');
+		// set revisit flag for payment processor
+		$payment_processor->set_revisit();
+		// load EEM_Transaction
+		EE_Registry::instance()->load_model('Transaction');
+		foreach (self::$_update_transactions_with_payment as $TXN_ID => $PAY_ID) {
+			// reschedule the cron if we can't hit the db right now
+			if (! EE_Maintenance_Mode::instance()->models_can_query()) {
+				// reset cron job for updating the TXN
+				EE_Cron_Tasks::schedule_update_transaction_with_payment(
+					time() + EE_Cron_Tasks::reschedule_timeout,
+					$TXN_ID,
+					$PAY_ID
+				);
+				continue;
+			}
+			$transaction = EEM_Transaction::instance()->get_one_by_ID($TXN_ID);
+			$payment = EEM_Payment::instance()->get_one_by_ID($PAY_ID);
+			// verify transaction
+			if ($transaction instanceof EE_Transaction && $payment instanceof EE_Payment) {
+				// now try to update the TXN with any payments
+				$payment_processor->update_txn_based_on_payment($transaction, $payment, true, true);
+			}
+			unset(self::$_update_transactions_with_payment[ $TXN_ID ]);
+		}
+	}
+
+
+
+	/************  END OF UPDATE TRANSACTION WITH PAYMENT  ************/
+
+
+	/*****************  EXPIRED TRANSACTION CHECK *****************/
+
+
+	/**
+	 * array of TXN IDs
+	 *
+	 * @var array
+	 */
+	protected static $_expired_transactions = array();
+
+
+	/**
+	 * schedule_expired_transaction_check
+	 * sets a wp_schedule_single_event() for following up on TXNs after their session has expired
+	 *
+	 * @param int $timestamp
+	 * @param int $TXN_ID
+	 */
+	public static function schedule_expired_transaction_check(
+		$timestamp,
+		$TXN_ID
+	) {
+		// validate $TXN_ID and $timestamp
+		$TXN_ID = absint($TXN_ID);
+		$timestamp = absint($timestamp);
+		if ($TXN_ID && $timestamp) {
+			wp_schedule_single_event(
+				$timestamp,
+				'AHEE__EE_Cron_Tasks__expired_transaction_check',
+				array($TXN_ID)
+			);
+		}
+	}
+
+
+	/**
+	 * expired_transaction_check
+	 * this is the callback for the action hook:
+	 * 'AHEE__EE_Cron_Tasks__transaction_session_expiration_check'
+	 * which is utilized by wp_schedule_single_event()
+	 * in \EED_Single_Page_Checkout::_initialize_transaction().
+	 * The passed TXN_ID gets added to an array, and then the
+	 * process_expired_transactions() function is hooked into
+	 * 'AHEE__EE_System__core_loaded_and_ready' which will actually handle the
+	 * processing of any failed transactions, because doing so now would be
+	 * too early and the required resources may not be available
+	 *
+	 * @param int $TXN_ID
+	 */
+	public static function expired_transaction_check($TXN_ID = 0)
+	{
+		if (absint($TXN_ID)) {
+			self::$_expired_transactions[ $TXN_ID ] = $TXN_ID;
+			add_action(
+				'shutdown',
+				array('EE_Cron_Tasks', 'process_expired_transactions'),
+				5
+			);
+		}
+	}
+
+
+	/**
+	 * process_expired_transactions
+	 * loops through the self::$_expired_transactions array and processes any failed TXNs
+	 *
+	 * @throws EE_Error
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidArgumentException
+	 * @throws ReflectionException
+	 * @throws DomainException
+	 * @throws RuntimeException
+	 */
+	public static function process_expired_transactions()
+	{
+		if (// are there any TXNs that need cleaning up ?
+			empty(self::$_expired_transactions)
+			// reschedule the cron if we can't hit the db right now
+			|| EE_Cron_Tasks::reschedule_cron_for_transactions_if_maintenance_mode(
+				'schedule_expired_transaction_check',
+				self::$_expired_transactions
+			)
+		) {
+			return;
+		}
+		/** @type EE_Transaction_Processor $transaction_processor */
+		$transaction_processor = EE_Registry::instance()->load_class('Transaction_Processor');
+		// set revisit flag for txn processor
+		$transaction_processor->set_revisit();
+		// load EEM_Transaction
+		EE_Registry::instance()->load_model('Transaction');
+		foreach (self::$_expired_transactions as $TXN_ID) {
+			$transaction = EEM_Transaction::instance()->get_one_by_ID($TXN_ID);
+			// verify transaction and whether it is failed or not
+			if ($transaction instanceof EE_Transaction) {
+				switch ($transaction->status_ID()) {
+					// Completed TXNs
+					case EEM_Transaction::complete_status_code:
+						do_action(
+							'AHEE__EE_Cron_Tasks__process_expired_transactions__completed_transaction',
+							$transaction
+						);
+						break;
+					// Overpaid TXNs
+					case EEM_Transaction::overpaid_status_code:
+						do_action(
+							'AHEE__EE_Cron_Tasks__process_expired_transactions__overpaid_transaction',
+							$transaction
+						);
+						break;
+					// Incomplete TXNs
+					case EEM_Transaction::incomplete_status_code:
+						do_action(
+							'AHEE__EE_Cron_Tasks__process_expired_transactions__incomplete_transaction',
+							$transaction
+						);
+						// todo : move business logic into EE_Transaction_Processor for finalizing abandoned transactions
+						break;
+					// Abandoned TXNs
+					case EEM_Transaction::abandoned_status_code:
+						// run hook before updating transaction, primarily so
+						// EED_Ticket_Sales_Monitor::process_abandoned_transactions() can release reserved tickets
+						do_action(
+							'AHEE__EE_Cron_Tasks__process_expired_transactions__abandoned_transaction',
+							$transaction
+						);
+						// don't finalize the TXN if it has already been completed
+						if ($transaction->all_reg_steps_completed() !== true) {
+							/** @type EE_Payment_Processor $payment_processor */
+							$payment_processor = EE_Registry::instance()->load_core('Payment_Processor');
+							// let's simulate an IPN here which will trigger any notifications that need to go out
+							$payment_processor->update_txn_based_on_payment(
+								$transaction,
+								$transaction->last_payment(),
+								true,
+								true
+							);
+						}
+						break;
+					// Failed TXNs
+					case EEM_Transaction::failed_status_code:
+						do_action(
+							'AHEE__EE_Cron_Tasks__process_expired_transactions__failed_transaction',
+							$transaction
+						);
+						// todo :
+						// perform garbage collection here and remove clean_out_junk_transactions()
+						// $registrations = $transaction->registrations();
+						// if (! empty($registrations)) {
+						//     foreach ($registrations as $registration) {
+						//         if ($registration instanceof EE_Registration) {
+						//             $delete_registration = true;
+						//             if ($registration->attendee() instanceof EE_Attendee) {
+						//                 $delete_registration = false;
+						//             }
+						//             if ($delete_registration) {
+						//                 $registration->delete_permanently();
+						//                 $registration->delete_related_permanently();
+						//             }
+						//         }
+						//     }
+						// }
+						break;
+				}
+			}
+			unset(self::$_expired_transactions[ $TXN_ID ]);
+		}
+	}
+
+
+
+	/*************  END OF EXPIRED TRANSACTION CHECK  *************/
+
+
+	/************* START CLEAN UP BOT TRANSACTIONS **********************/
+
+
+	/**
+	 * callback for 'AHEE__EE_Cron_Tasks__clean_up_junk_transactions'
+	 * which is setup during activation to run on an hourly cron
+	 *
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 * @throws DomainException
+	 */
+	public static function clean_out_junk_transactions()
+	{
+		if (EE_Maintenance_Mode::instance()->models_can_query()) {
+			EED_Ticket_Sales_Monitor::reset_reservation_counts();
+			EEM_Transaction::instance('')->delete_junk_transactions();
+			EEM_Registration::instance('')->delete_registrations_with_no_transaction();
+			EEM_Line_Item::instance('')->delete_line_items_with_no_transaction();
+		}
+	}
+
+
+	/**
+	 * Deletes old gateway logs. After about a week we usually don't need them for debugging. But folks can filter that.
+	 *
+	 * @throws EE_Error
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidArgumentException
+	 */
+	public static function clean_out_old_gateway_logs()
+	{
+		if (EE_Maintenance_Mode::instance()->models_can_query()) {
+			$reg_config = LoaderFactory::getLoader()->load('EE_Registration_Config');
+			$time_diff_for_comparison = apply_filters(
+				'FHEE__EE_Cron_Tasks__clean_out_old_gateway_logs__time_diff_for_comparison',
+				'-' . $reg_config->gateway_log_lifespan
+			);
+			EEM_Change_Log::instance()->delete_gateway_logs_older_than(new DateTime($time_diff_for_comparison));
+		}
+	}
+
+
+	/*****************  FINALIZE ABANDONED TRANSACTIONS *****************/
+
+
+	/**
+	 * @var array
+	 */
+	protected static $_abandoned_transactions = array();
+
+
+	/**
+	 * @deprecated
+	 * @param int $timestamp
+	 * @param int $TXN_ID
+	 */
+	public static function schedule_finalize_abandoned_transactions_check($timestamp, $TXN_ID)
+	{
+		EE_Cron_Tasks::schedule_expired_transaction_check($timestamp, $TXN_ID);
+	}
+
+
+	/**
+	 * @deprecated
+	 * @param int $TXN_ID
+	 */
+	public static function check_for_abandoned_transactions($TXN_ID = 0)
+	{
+		EE_Cron_Tasks::expired_transaction_check($TXN_ID);
+	}
+
+
+	/**
+	 * @deprecated
+	 * @throws EE_Error
+	 * @throws DomainException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidArgumentException
+	 * @throws ReflectionException
+	 * @throws RuntimeException
+	 */
+	public static function finalize_abandoned_transactions()
+	{
+		do_action('AHEE_log', __CLASS__, __FUNCTION__);
+		if (// are there any TXNs that need cleaning up ?
+			empty(self::$_abandoned_transactions)
+			// reschedule the cron if we can't hit the db right now
+			|| EE_Cron_Tasks::reschedule_cron_for_transactions_if_maintenance_mode(
+				'schedule_expired_transaction_check',
+				self::$_abandoned_transactions
+			)
+		) {
+			return;
+		}
+		// combine our arrays of transaction IDs
+		self::$_expired_transactions = self::$_abandoned_transactions + self::$_expired_transactions;
+		// and deal with abandoned transactions here now...
+		EE_Cron_Tasks::process_expired_transactions();
+	}
+
+
+	/*************  END OF FINALIZE ABANDONED TRANSACTIONS  *************/
 }

Spacing +14 added lines, -14 removed lines

@@ -38,7 +38,7 @@ 
      */
     public static function instance()
     {
-        if (! self::$_instance instanceof EE_Cron_Tasks) {
+        if ( ! self::$_instance instanceof EE_Cron_Tasks) {
             self::$_instance = new self();
         }
         return self::$_instance;
@@ -71,7 +71,7 @@ 
              */
             add_action(
                 'AHEE__EE_System__load_core_configuration__complete',
-                function () {
+                function() {
                     EE_Registry::instance()->NET_CFG->core->do_messages_on_same_request = true;
                     EE_Registry::instance()->NET_CFG->update_config(true, false);
                     add_option('ee_disabled_wp_cron_check', 1, '', false);
@@ -123,16 +123,16 @@ 
             'AHEE__EE_Cron_Tasks__clean_up_junk_transactions',
         );
         $crons = (array) get_option('cron');
-        if (! is_array($crons)) {
+        if ( ! is_array($crons)) {
             return;
         }
         foreach ($crons as $timestamp => $cron) {
             /** @var array[] $cron */
             foreach ($ee_crons as $ee_cron) {
-                if (isset($cron[ $ee_cron ]) && is_array($cron[ $ee_cron ])) {
+                if (isset($cron[$ee_cron]) && is_array($cron[$ee_cron])) {
                     do_action('AHEE_log', __CLASS__, __FUNCTION__, $ee_cron, 'scheduled EE cron');
-                    foreach ($cron[ $ee_cron ] as $ee_cron_details) {
-                        if (! empty($ee_cron_details['args'])) {
+                    foreach ($cron[$ee_cron] as $ee_cron_details) {
+                        if ( ! empty($ee_cron_details['args'])) {
                             do_action(
                                 'AHEE_log',
                                 __CLASS__,
@@ -159,7 +159,7 @@ 
      */
     public static function reschedule_cron_for_transactions_if_maintenance_mode($cron_task, array $TXN_IDs)
     {
-        if (! method_exists('EE_Cron_Tasks', $cron_task)) {
+        if ( ! method_exists('EE_Cron_Tasks', $cron_task)) {
             throw new DomainException(
                 sprintf(
                     __('"%1$s" is not valid method on EE_Cron_Tasks.', 'event_espresso'),
@@ -168,7 +168,7 @@ 
             );
         }
         // reschedule the cron if we can't hit the db right now
-        if (! EE_Maintenance_Mode::instance()->models_can_query()) {
+        if ( ! EE_Maintenance_Mode::instance()->models_can_query()) {
             foreach ($TXN_IDs as $TXN_ID => $additional_vars) {
                 // ensure $additional_vars is an array
                 $additional_vars = is_array($additional_vars) ? $additional_vars : array($additional_vars);
@@ -249,7 +249,7 @@ 
     {
         do_action('AHEE_log', __CLASS__, __FUNCTION__, $TXN_ID, '$TXN_ID');
         if (absint($TXN_ID)) {
-            self::$_update_transactions_with_payment[ $TXN_ID ] = $PAY_ID;
+            self::$_update_transactions_with_payment[$TXN_ID] = $PAY_ID;
             add_action(
                 'shutdown',
                 array('EE_Cron_Tasks', 'update_transaction_with_payment'),
@@ -295,7 +295,7 @@ 
         EE_Registry::instance()->load_model('Transaction');
         foreach (self::$_update_transactions_with_payment as $TXN_ID => $PAY_ID) {
             // reschedule the cron if we can't hit the db right now
-            if (! EE_Maintenance_Mode::instance()->models_can_query()) {
+            if ( ! EE_Maintenance_Mode::instance()->models_can_query()) {
                 // reset cron job for updating the TXN
                 EE_Cron_Tasks::schedule_update_transaction_with_payment(
                     time() + EE_Cron_Tasks::reschedule_timeout,
@@ -311,7 +311,7 @@ 
                 // now try to update the TXN with any payments
                 $payment_processor->update_txn_based_on_payment($transaction, $payment, true, true);
             }
-            unset(self::$_update_transactions_with_payment[ $TXN_ID ]);
+            unset(self::$_update_transactions_with_payment[$TXN_ID]);
         }
     }
 
@@ -372,7 +372,7 @@ 
     public static function expired_transaction_check($TXN_ID = 0)
     {
         if (absint($TXN_ID)) {
-            self::$_expired_transactions[ $TXN_ID ] = $TXN_ID;
+            self::$_expired_transactions[$TXN_ID] = $TXN_ID;
             add_action(
                 'shutdown',
                 array('EE_Cron_Tasks', 'process_expired_transactions'),
@@ -486,7 +486,7 @@ 
                         break;
                 }
             }
-            unset(self::$_expired_transactions[ $TXN_ID ]);
+            unset(self::$_expired_transactions[$TXN_ID]);
         }
     }
 
@@ -533,7 +533,7 @@ 
             $reg_config = LoaderFactory::getLoader()->load('EE_Registration_Config');
             $time_diff_for_comparison = apply_filters(
                 'FHEE__EE_Cron_Tasks__clean_out_old_gateway_logs__time_diff_for_comparison',
-                '-' . $reg_config->gateway_log_lifespan
+                '-'.$reg_config->gateway_log_lifespan
             );
             EEM_Change_Log::instance()->delete_gateway_logs_older_than(new DateTime($time_diff_for_comparison));
         }

core/EE_Dependency_Map.core.php

Spacing +33 added lines, -33 removed lines

@@ -122,7 +122,7 @@ 
     public static function instance(ClassInterfaceCache $class_cache = null)
     {
         // check if class object is instantiated, and instantiated properly
-        if (! self::$_instance instanceof EE_Dependency_Map
+        if ( ! self::$_instance instanceof EE_Dependency_Map
             && $class_cache instanceof ClassInterfaceCache
         ) {
             self::$_instance = new EE_Dependency_Map($class_cache);
@@ -203,18 +203,18 @@ 
     ) {
         $class = trim($class, '\\');
         $registered = false;
-        if (empty(self::$_instance->_dependency_map[ $class ])) {
-            self::$_instance->_dependency_map[ $class ] = array();
+        if (empty(self::$_instance->_dependency_map[$class])) {
+            self::$_instance->_dependency_map[$class] = array();
         }
         // we need to make sure that any aliases used when registering a dependency
         // get resolved to the correct class name
         foreach ($dependencies as $dependency => $load_source) {
             $alias = self::$_instance->getFqnForAlias($dependency);
             if ($overwrite === EE_Dependency_Map::OVERWRITE_DEPENDENCIES
-                || ! isset(self::$_instance->_dependency_map[ $class ][ $alias ])
+                || ! isset(self::$_instance->_dependency_map[$class][$alias])
             ) {
-                unset($dependencies[ $dependency ]);
-                $dependencies[ $alias ] = $load_source;
+                unset($dependencies[$dependency]);
+                $dependencies[$alias] = $load_source;
                 $registered = true;
             }
         }
@@ -224,13 +224,13 @@ 
         // ie: with A = B + C, entries in B take precedence over duplicate entries in C
         // Union is way faster than array_merge() but should be used with caution...
         // especially with numerically indexed arrays
-        $dependencies += self::$_instance->_dependency_map[ $class ];
+        $dependencies += self::$_instance->_dependency_map[$class];
         // now we need to ensure that the resulting dependencies
         // array only has the entries that are required for the class
         // so first count how many dependencies were originally registered for the class
-        $dependency_count = count(self::$_instance->_dependency_map[ $class ]);
+        $dependency_count = count(self::$_instance->_dependency_map[$class]);
         // if that count is non-zero (meaning dependencies were already registered)
-        self::$_instance->_dependency_map[ $class ] = $dependency_count
+        self::$_instance->_dependency_map[$class] = $dependency_count
             // then truncate the  final array to match that count
             ? array_slice($dependencies, 0, $dependency_count)
             // otherwise just take the incoming array because nothing previously existed
@@ -247,13 +247,13 @@ 
      */
     public static function register_class_loader($class_name, $loader = 'load_core')
     {
-        if (! $loader instanceof Closure && strpos($class_name, '\\') !== false) {
+        if ( ! $loader instanceof Closure && strpos($class_name, '\\') !== false) {
             throw new DomainException(
                 esc_html__('Don\'t use class loaders for FQCNs.', 'event_espresso')
             );
         }
         // check that loader is callable or method starts with "load_" and exists in EE_Registry
-        if (! is_callable($loader)
+        if ( ! is_callable($loader)
             && (
                 strpos($loader, 'load_') !== 0
                 || ! method_exists('EE_Registry', $loader)
@@ -270,8 +270,8 @@ 
             );
         }
         $class_name = self::$_instance->getFqnForAlias($class_name);
-        if (! isset(self::$_instance->_class_loaders[ $class_name ])) {
-            self::$_instance->_class_loaders[ $class_name ] = $loader;
+        if ( ! isset(self::$_instance->_class_loaders[$class_name])) {
+            self::$_instance->_class_loaders[$class_name] = $loader;
             return true;
         }
         return false;
@@ -299,7 +299,7 @@ 
         if (strpos($class_name, 'EEM_') === 0) {
             $class_name = 'LEGACY_MODELS';
         }
-        return isset($this->_dependency_map[ $class_name ]) ? true : false;
+        return isset($this->_dependency_map[$class_name]) ? true : false;
     }
 
 
@@ -317,7 +317,7 @@ 
             $class_name = 'LEGACY_MODELS';
         }
         $dependency = $this->getFqnForAlias($dependency, $class_name);
-        return isset($this->_dependency_map[ $class_name ][ $dependency ])
+        return isset($this->_dependency_map[$class_name][$dependency])
             ? true
             : false;
     }
@@ -338,7 +338,7 @@ 
         }
         $dependency = $this->getFqnForAlias($dependency);
         return $this->has_dependency_for_class($class_name, $dependency)
-            ? $this->_dependency_map[ $class_name ][ $dependency ]
+            ? $this->_dependency_map[$class_name][$dependency]
             : EE_Dependency_Map::not_registered;
     }
 
@@ -354,7 +354,7 @@ 
             return 'load_model';
         }
         $class_name = $this->getFqnForAlias($class_name);
-        return isset($this->_class_loaders[ $class_name ]) ? $this->_class_loaders[ $class_name ] : '';
+        return isset($this->_class_loaders[$class_name]) ? $this->_class_loaders[$class_name] : '';
     }
 
 
@@ -788,13 +788,13 @@ 
             'EE_Front_Controller'                          => 'load_core',
             'EE_Module_Request_Router'                     => 'load_core',
             'EE_Registry'                                  => 'load_core',
-            'EE_Request'                                   => function () use (&$legacy_request) {
+            'EE_Request'                                   => function() use (&$legacy_request) {
                 return $legacy_request;
             },
-            'EventEspresso\core\services\request\Request'  => function () use (&$request) {
+            'EventEspresso\core\services\request\Request'  => function() use (&$request) {
                 return $request;
             },
-            'EventEspresso\core\services\request\Response' => function () use (&$response) {
+            'EventEspresso\core\services\request\Response' => function() use (&$response) {
                 return $response;
             },
             'EE_Base'                                      => 'load_core',
@@ -818,7 +818,7 @@ 
             'EE_Messages_Data_Handler_Collection'          => 'load_lib',
             'EE_Message_Template_Group_Collection'         => 'load_lib',
             'EE_Payment_Method_Manager'                    => 'load_lib',
-            'EE_Messages_Generator'                        => function () {
+            'EE_Messages_Generator'                        => function() {
                 return EE_Registry::instance()->load_lib(
                     'Messages_Generator',
                     array(),
@@ -826,7 +826,7 @@ 
                     false
                 );
             },
-            'EE_Messages_Template_Defaults'                => function ($arguments = array()) {
+            'EE_Messages_Template_Defaults'                => function($arguments = array()) {
                 return EE_Registry::instance()->load_lib(
                     'Messages_Template_Defaults',
                     $arguments,
@@ -835,37 +835,37 @@ 
                 );
             },
             // load_helper
-            'EEH_Parse_Shortcodes'                         => function () {
+            'EEH_Parse_Shortcodes'                         => function() {
                 if (EE_Registry::instance()->load_helper('Parse_Shortcodes')) {
                     return new EEH_Parse_Shortcodes();
                 }
                 return null;
             },
-            'EE_Template_Config'                           => function () {
+            'EE_Template_Config'                           => function() {
                 return EE_Config::instance()->template_settings;
             },
-            'EE_Currency_Config'                           => function () {
+            'EE_Currency_Config'                           => function() {
                 return EE_Config::instance()->currency;
             },
-            'EE_Registration_Config'                       => function () {
+            'EE_Registration_Config'                       => function() {
                 return EE_Config::instance()->registration;
             },
-            'EE_Core_Config'                               => function () {
+            'EE_Core_Config'                               => function() {
                 return EE_Config::instance()->core;
             },
-            'EventEspresso\core\services\loaders\Loader'   => function () {
+            'EventEspresso\core\services\loaders\Loader'   => function() {
                 return LoaderFactory::getLoader();
             },
-            'EE_Network_Config'                            => function () {
+            'EE_Network_Config'                            => function() {
                 return EE_Network_Config::instance();
             },
-            'EE_Config'                                    => function () {
+            'EE_Config'                                    => function() {
                 return EE_Config::instance();
             },
-            'EventEspresso\core\domain\Domain'             => function () {
+            'EventEspresso\core\domain\Domain'             => function() {
                 return DomainFactory::getEventEspressoCoreDomain();
             },
-            'EE_Admin_Config'                              => function () {
+            'EE_Admin_Config'                              => function() {
                 return EE_Config::instance()->admin;
             }
         );
@@ -927,7 +927,7 @@ 
             }
             $this->class_cache->addAlias($fqn, $alias);
         }
-        if (! (defined('DOING_AJAX') && DOING_AJAX) && is_admin()) {
+        if ( ! (defined('DOING_AJAX') && DOING_AJAX) && is_admin()) {
             $this->class_cache->addAlias(
                 'EventEspresso\core\services\notices\ConvertNoticesToAdminNotices',
                 'EventEspresso\core\services\notices\NoticeConverterInterface'

Indentation +979 added lines, -979 removed lines

@@ -20,983 +20,983 @@
 class EE_Dependency_Map
 {
 
-    /**
-     * This means that the requested class dependency is not present in the dependency map
-     */
-    const not_registered = 0;
-
-    /**
-     * This instructs class loaders to ALWAYS return a newly instantiated object for the requested class.
-     */
-    const load_new_object = 1;
-
-    /**
-     * This instructs class loaders to return a previously instantiated and cached object for the requested class.
-     * IF a previously instantiated object does not exist, a new one will be created and added to the cache.
-     */
-    const load_from_cache = 2;
-
-    /**
-     * When registering a dependency,
-     * this indicates to keep any existing dependencies that already exist,
-     * and simply discard any new dependencies declared in the incoming data
-     */
-    const KEEP_EXISTING_DEPENDENCIES = 0;
-
-    /**
-     * When registering a dependency,
-     * this indicates to overwrite any existing dependencies that already exist using the incoming data
-     */
-    const OVERWRITE_DEPENDENCIES = 1;
-
-
-    /**
-     * @type EE_Dependency_Map $_instance
-     */
-    protected static $_instance;
-
-    /**
-     * @var ClassInterfaceCache $class_cache
-     */
-    private $class_cache;
-
-    /**
-     * @type RequestInterface $request
-     */
-    protected $request;
-
-    /**
-     * @type LegacyRequestInterface $legacy_request
-     */
-    protected $legacy_request;
-
-    /**
-     * @type ResponseInterface $response
-     */
-    protected $response;
-
-    /**
-     * @type LoaderInterface $loader
-     */
-    protected $loader;
-
-    /**
-     * @type array $_dependency_map
-     */
-    protected $_dependency_map = array();
-
-    /**
-     * @type array $_class_loaders
-     */
-    protected $_class_loaders = array();
-
-
-    /**
-     * EE_Dependency_Map constructor.
-     *
-     * @param ClassInterfaceCache $class_cache
-     */
-    protected function __construct(ClassInterfaceCache $class_cache)
-    {
-        $this->class_cache = $class_cache;
-        do_action('EE_Dependency_Map____construct', $this);
-    }
-
-
-    /**
-     * @return void
-     */
-    public function initialize()
-    {
-        $this->_register_core_dependencies();
-        $this->_register_core_class_loaders();
-        $this->_register_core_aliases();
-    }
-
-
-    /**
-     * @singleton method used to instantiate class object
-     * @param ClassInterfaceCache|null $class_cache
-     * @return EE_Dependency_Map
-     */
-    public static function instance(ClassInterfaceCache $class_cache = null)
-    {
-        // check if class object is instantiated, and instantiated properly
-        if (! self::$_instance instanceof EE_Dependency_Map
-            && $class_cache instanceof ClassInterfaceCache
-        ) {
-            self::$_instance = new EE_Dependency_Map($class_cache);
-        }
-        return self::$_instance;
-    }
-
-
-    /**
-     * @param RequestInterface $request
-     */
-    public function setRequest(RequestInterface $request)
-    {
-        $this->request = $request;
-    }
-
-
-    /**
-     * @param LegacyRequestInterface $legacy_request
-     */
-    public function setLegacyRequest(LegacyRequestInterface $legacy_request)
-    {
-        $this->legacy_request = $legacy_request;
-    }
-
-
-    /**
-     * @param ResponseInterface $response
-     */
-    public function setResponse(ResponseInterface $response)
-    {
-        $this->response = $response;
-    }
-
-
-    /**
-     * @param LoaderInterface $loader
-     */
-    public function setLoader(LoaderInterface $loader)
-    {
-        $this->loader = $loader;
-    }
-
-
-    /**
-     * @param string $class
-     * @param array  $dependencies
-     * @param int    $overwrite
-     * @return bool
-     */
-    public static function register_dependencies(
-        $class,
-        array $dependencies,
-        $overwrite = EE_Dependency_Map::KEEP_EXISTING_DEPENDENCIES
-    ) {
-        return self::$_instance->registerDependencies($class, $dependencies, $overwrite);
-    }
-
-
-    /**
-     * Assigns an array of class names and corresponding load sources (new or cached)
-     * to the class specified by the first parameter.
-     * IMPORTANT !!!
-     * The order of elements in the incoming $dependencies array MUST match
-     * the order of the constructor parameters for the class in question.
-     * This is especially important when overriding any existing dependencies that are registered.
-     * the third parameter controls whether any duplicate dependencies are overwritten or not.
-     *
-     * @param string $class
-     * @param array  $dependencies
-     * @param int    $overwrite
-     * @return bool
-     */
-    public function registerDependencies(
-        $class,
-        array $dependencies,
-        $overwrite = EE_Dependency_Map::KEEP_EXISTING_DEPENDENCIES
-    ) {
-        $class = trim($class, '\\');
-        $registered = false;
-        if (empty(self::$_instance->_dependency_map[ $class ])) {
-            self::$_instance->_dependency_map[ $class ] = array();
-        }
-        // we need to make sure that any aliases used when registering a dependency
-        // get resolved to the correct class name
-        foreach ($dependencies as $dependency => $load_source) {
-            $alias = self::$_instance->getFqnForAlias($dependency);
-            if ($overwrite === EE_Dependency_Map::OVERWRITE_DEPENDENCIES
-                || ! isset(self::$_instance->_dependency_map[ $class ][ $alias ])
-            ) {
-                unset($dependencies[ $dependency ]);
-                $dependencies[ $alias ] = $load_source;
-                $registered = true;
-            }
-        }
-        // now add our two lists of dependencies together.
-        // using Union (+=) favours the arrays in precedence from left to right,
-        // so $dependencies is NOT overwritten because it is listed first
-        // ie: with A = B + C, entries in B take precedence over duplicate entries in C
-        // Union is way faster than array_merge() but should be used with caution...
-        // especially with numerically indexed arrays
-        $dependencies += self::$_instance->_dependency_map[ $class ];
-        // now we need to ensure that the resulting dependencies
-        // array only has the entries that are required for the class
-        // so first count how many dependencies were originally registered for the class
-        $dependency_count = count(self::$_instance->_dependency_map[ $class ]);
-        // if that count is non-zero (meaning dependencies were already registered)
-        self::$_instance->_dependency_map[ $class ] = $dependency_count
-            // then truncate the  final array to match that count
-            ? array_slice($dependencies, 0, $dependency_count)
-            // otherwise just take the incoming array because nothing previously existed
-            : $dependencies;
-        return $registered;
-    }
-
-
-    /**
-     * @param string $class_name
-     * @param string $loader
-     * @return bool
-     * @throws DomainException
-     */
-    public static function register_class_loader($class_name, $loader = 'load_core')
-    {
-        if (! $loader instanceof Closure && strpos($class_name, '\\') !== false) {
-            throw new DomainException(
-                esc_html__('Don\'t use class loaders for FQCNs.', 'event_espresso')
-            );
-        }
-        // check that loader is callable or method starts with "load_" and exists in EE_Registry
-        if (! is_callable($loader)
-            && (
-                strpos($loader, 'load_') !== 0
-                || ! method_exists('EE_Registry', $loader)
-            )
-        ) {
-            throw new DomainException(
-                sprintf(
-                    esc_html__(
-                        '"%1$s" is not a valid loader method on EE_Registry.',
-                        'event_espresso'
-                    ),
-                    $loader
-                )
-            );
-        }
-        $class_name = self::$_instance->getFqnForAlias($class_name);
-        if (! isset(self::$_instance->_class_loaders[ $class_name ])) {
-            self::$_instance->_class_loaders[ $class_name ] = $loader;
-            return true;
-        }
-        return false;
-    }
-
-
-    /**
-     * @return array
-     */
-    public function dependency_map()
-    {
-        return $this->_dependency_map;
-    }
-
-
-    /**
-     * returns TRUE if dependency map contains a listing for the provided class name
-     *
-     * @param string $class_name
-     * @return boolean
-     */
-    public function has($class_name = '')
-    {
-        // all legacy models have the same dependencies
-        if (strpos($class_name, 'EEM_') === 0) {
-            $class_name = 'LEGACY_MODELS';
-        }
-        return isset($this->_dependency_map[ $class_name ]) ? true : false;
-    }
-
-
-    /**
-     * returns TRUE if dependency map contains a listing for the provided class name AND dependency
-     *
-     * @param string $class_name
-     * @param string $dependency
-     * @return bool
-     */
-    public function has_dependency_for_class($class_name = '', $dependency = '')
-    {
-        // all legacy models have the same dependencies
-        if (strpos($class_name, 'EEM_') === 0) {
-            $class_name = 'LEGACY_MODELS';
-        }
-        $dependency = $this->getFqnForAlias($dependency, $class_name);
-        return isset($this->_dependency_map[ $class_name ][ $dependency ])
-            ? true
-            : false;
-    }
-
-
-    /**
-     * returns loading strategy for whether a previously cached dependency should be loaded or a new instance returned
-     *
-     * @param string $class_name
-     * @param string $dependency
-     * @return int
-     */
-    public function loading_strategy_for_class_dependency($class_name = '', $dependency = '')
-    {
-        // all legacy models have the same dependencies
-        if (strpos($class_name, 'EEM_') === 0) {
-            $class_name = 'LEGACY_MODELS';
-        }
-        $dependency = $this->getFqnForAlias($dependency);
-        return $this->has_dependency_for_class($class_name, $dependency)
-            ? $this->_dependency_map[ $class_name ][ $dependency ]
-            : EE_Dependency_Map::not_registered;
-    }
-
-
-    /**
-     * @param string $class_name
-     * @return string | Closure
-     */
-    public function class_loader($class_name)
-    {
-        // all legacy models use load_model()
-        if (strpos($class_name, 'EEM_') === 0) {
-            return 'load_model';
-        }
-        $class_name = $this->getFqnForAlias($class_name);
-        return isset($this->_class_loaders[ $class_name ]) ? $this->_class_loaders[ $class_name ] : '';
-    }
-
-
-    /**
-     * @return array
-     */
-    public function class_loaders()
-    {
-        return $this->_class_loaders;
-    }
-
-
-    /**
-     * adds an alias for a classname
-     *
-     * @param string $fqcn      the class name that should be used (concrete class to replace interface)
-     * @param string $alias     the class name that would be type hinted for (abstract parent or interface)
-     * @param string $for_class the class that has the dependency (is type hinting for the interface)
-     */
-    public function add_alias($fqcn, $alias, $for_class = '')
-    {
-        $this->class_cache->addAlias($fqcn, $alias, $for_class);
-    }
-
-
-    /**
-     * Returns TRUE if the provided fully qualified name IS an alias
-     * WHY?
-     * Because if a class is type hinting for a concretion,
-     * then why would we need to find another class to supply it?
-     * ie: if a class asks for `Fully/Qualified/Namespace/SpecificClassName`,
-     * then give it an instance of `Fully/Qualified/Namespace/SpecificClassName`.
-     * Don't go looking for some substitute.
-     * Whereas if a class is type hinting for an interface...
-     * then we need to find an actual class to use.
-     * So the interface IS the alias for some other FQN,
-     * and we need to find out if `Fully/Qualified/Namespace/SomeInterface`
-     * represents some other class.
-     *
-     * @param string $fqn
-     * @param string $for_class
-     * @return bool
-     */
-    public function isAlias($fqn = '', $for_class = '')
-    {
-        return $this->class_cache->isAlias($fqn, $for_class);
-    }
-
-
-    /**
-     * Returns a FQN for provided alias if one exists, otherwise returns the original $alias
-     * functions recursively, so that multiple aliases can be used to drill down to a FQN
-     *  for example:
-     *      if the following two entries were added to the _aliases array:
-     *          array(
-     *              'interface_alias'           => 'some\namespace\interface'
-     *              'some\namespace\interface'  => 'some\namespace\classname'
-     *          )
-     *      then one could use EE_Registry::instance()->create( 'interface_alias' )
-     *      to load an instance of 'some\namespace\classname'
-     *
-     * @param string $alias
-     * @param string $for_class
-     * @return string
-     */
-    public function getFqnForAlias($alias = '', $for_class = '')
-    {
-        return (string) $this->class_cache->getFqnForAlias($alias, $for_class);
-    }
-
-
-    /**
-     * Registers the core dependencies and whether a previously instantiated object should be loaded from the cache,
-     * if one exists, or whether a new object should be generated every time the requested class is loaded.
-     * This is done by using the following class constants:
-     *        EE_Dependency_Map::load_from_cache - loads previously instantiated object
-     *        EE_Dependency_Map::load_new_object - generates a new object every time
-     */
-    protected function _register_core_dependencies()
-    {
-        $this->_dependency_map = array(
-            'EE_Request_Handler'                                                                                          => array(
-                'EE_Request' => EE_Dependency_Map::load_from_cache,
-            ),
-            'EE_System'                                                                                                   => array(
-                'EE_Registry'                                 => EE_Dependency_Map::load_from_cache,
-                'EventEspresso\core\services\loaders\Loader'  => EE_Dependency_Map::load_from_cache,
-                'EventEspresso\core\services\request\Request' => EE_Dependency_Map::load_from_cache,
-                'EE_Maintenance_Mode'                         => EE_Dependency_Map::load_from_cache,
-            ),
-            'EE_Session'                                                                                                  => array(
-                'EventEspresso\core\services\cache\TransientCacheStorage'  => EE_Dependency_Map::load_from_cache,
-                'EventEspresso\core\domain\values\session\SessionLifespan' => EE_Dependency_Map::load_from_cache,
-                'EventEspresso\core\services\request\Request'              => EE_Dependency_Map::load_from_cache,
-                'EE_Encryption'                                            => EE_Dependency_Map::load_from_cache,
-            ),
-            'EE_Cart'                                                                                                     => array(
-                'EE_Session' => EE_Dependency_Map::load_from_cache,
-            ),
-            'EE_Front_Controller'                                                                                         => array(
-                'EE_Registry'              => EE_Dependency_Map::load_from_cache,
-                'EE_Request_Handler'       => EE_Dependency_Map::load_from_cache,
-                'EE_Module_Request_Router' => EE_Dependency_Map::load_from_cache,
-            ),
-            'EE_Messenger_Collection_Loader'                                                                              => array(
-                'EE_Messenger_Collection' => EE_Dependency_Map::load_new_object,
-            ),
-            'EE_Message_Type_Collection_Loader'                                                                           => array(
-                'EE_Message_Type_Collection' => EE_Dependency_Map::load_new_object,
-            ),
-            'EE_Message_Resource_Manager'                                                                                 => array(
-                'EE_Messenger_Collection_Loader'    => EE_Dependency_Map::load_new_object,
-                'EE_Message_Type_Collection_Loader' => EE_Dependency_Map::load_new_object,
-                'EEM_Message_Template_Group'        => EE_Dependency_Map::load_from_cache,
-            ),
-            'EE_Message_Factory'                                                                                          => array(
-                'EE_Message_Resource_Manager' => EE_Dependency_Map::load_from_cache,
-            ),
-            'EE_messages'                                                                                                 => array(
-                'EE_Message_Resource_Manager' => EE_Dependency_Map::load_from_cache,
-            ),
-            'EE_Messages_Generator'                                                                                       => array(
-                'EE_Messages_Queue'                    => EE_Dependency_Map::load_new_object,
-                'EE_Messages_Data_Handler_Collection'  => EE_Dependency_Map::load_new_object,
-                'EE_Message_Template_Group_Collection' => EE_Dependency_Map::load_new_object,
-                'EEH_Parse_Shortcodes'                 => EE_Dependency_Map::load_from_cache,
-            ),
-            'EE_Messages_Processor'                                                                                       => array(
-                'EE_Message_Resource_Manager' => EE_Dependency_Map::load_from_cache,
-            ),
-            'EE_Messages_Queue'                                                                                           => array(
-                'EE_Message_Repository' => EE_Dependency_Map::load_new_object,
-            ),
-            'EE_Messages_Template_Defaults'                                                                               => array(
-                'EEM_Message_Template_Group' => EE_Dependency_Map::load_from_cache,
-                'EEM_Message_Template'       => EE_Dependency_Map::load_from_cache,
-            ),
-            'EE_Message_To_Generate_From_Request'                                                                         => array(
-                'EE_Message_Resource_Manager' => EE_Dependency_Map::load_from_cache,
-                'EE_Request_Handler'          => EE_Dependency_Map::load_from_cache,
-            ),
-            'EventEspresso\core\services\commands\CommandBus'                                                             => array(
-                'EventEspresso\core\services\commands\CommandHandlerManager' => EE_Dependency_Map::load_from_cache,
-            ),
-            'EventEspresso\services\commands\CommandHandler'                                                              => array(
-                'EE_Registry'         => EE_Dependency_Map::load_from_cache,
-                'CommandBusInterface' => EE_Dependency_Map::load_from_cache,
-            ),
-            'EventEspresso\core\services\commands\CommandHandlerManager'                                                  => array(
-                'EventEspresso\core\services\loaders\Loader' => EE_Dependency_Map::load_from_cache,
-            ),
-            'EventEspresso\core\services\commands\CompositeCommandHandler'                                                => array(
-                'EventEspresso\core\services\commands\CommandBus'     => EE_Dependency_Map::load_from_cache,
-                'EventEspresso\core\services\commands\CommandFactory' => EE_Dependency_Map::load_from_cache,
-            ),
-            'EventEspresso\core\services\commands\CommandFactory'                                                         => array(
-                'EventEspresso\core\services\loaders\Loader' => EE_Dependency_Map::load_from_cache,
-            ),
-            'EventEspresso\core\services\commands\middleware\CapChecker'                                                  => array(
-                'EventEspresso\core\domain\services\capabilities\CapabilitiesChecker' => EE_Dependency_Map::load_from_cache,
-            ),
-            'EventEspresso\core\domain\services\capabilities\CapabilitiesChecker'                                         => array(
-                'EE_Capabilities' => EE_Dependency_Map::load_from_cache,
-            ),
-            'EventEspresso\core\domain\services\capabilities\RegistrationsCapChecker'                                     => array(
-                'EE_Capabilities' => EE_Dependency_Map::load_from_cache,
-            ),
-            'EventEspresso\core\services\commands\registration\CreateRegistrationCommandHandler'                          => array(
-                'EventEspresso\core\domain\services\registration\CreateRegistrationService' => EE_Dependency_Map::load_from_cache,
-            ),
-            'EventEspresso\core\services\commands\registration\CopyRegistrationDetailsCommandHandler'                     => array(
-                'EventEspresso\core\domain\services\registration\CopyRegistrationService' => EE_Dependency_Map::load_from_cache,
-            ),
-            'EventEspresso\core\services\commands\registration\CopyRegistrationPaymentsCommandHandler'                    => array(
-                'EventEspresso\core\domain\services\registration\CopyRegistrationService' => EE_Dependency_Map::load_from_cache,
-            ),
-            'EventEspresso\core\services\commands\registration\CancelRegistrationAndTicketLineItemCommandHandler'         => array(
-                'EventEspresso\core\domain\services\registration\CancelTicketLineItemService' => EE_Dependency_Map::load_from_cache,
-            ),
-            'EventEspresso\core\services\commands\registration\UpdateRegistrationAndTransactionAfterChangeCommandHandler' => array(
-                'EventEspresso\core\domain\services\registration\UpdateRegistrationService' => EE_Dependency_Map::load_from_cache,
-            ),
-            'EventEspresso\core\services\commands\ticket\CreateTicketLineItemCommandHandler'                              => array(
-                'EventEspresso\core\domain\services\ticket\CreateTicketLineItemService' => EE_Dependency_Map::load_from_cache,
-            ),
-            'EventEspresso\core\services\commands\ticket\CancelTicketLineItemCommandHandler'                              => array(
-                'EventEspresso\core\domain\services\ticket\CancelTicketLineItemService' => EE_Dependency_Map::load_from_cache,
-            ),
-            'EventEspresso\core\domain\services\registration\CancelRegistrationService'                                   => array(
-                'EventEspresso\core\domain\services\ticket\CancelTicketLineItemService' => EE_Dependency_Map::load_from_cache,
-            ),
-            'EventEspresso\core\services\commands\attendee\CreateAttendeeCommandHandler'                                  => array(
-                'EEM_Attendee' => EE_Dependency_Map::load_from_cache,
-            ),
-            'EventEspresso\core\services\database\TableManager'                                                           => array(
-                'EventEspresso\core\services\database\TableAnalysis' => EE_Dependency_Map::load_from_cache,
-            ),
-            'EE_Data_Migration_Class_Base'                                                                                => array(
-                'EventEspresso\core\services\database\TableAnalysis' => EE_Dependency_Map::load_from_cache,
-                'EventEspresso\core\services\database\TableManager'  => EE_Dependency_Map::load_from_cache,
-            ),
-            'EE_DMS_Core_4_1_0'                                                                                           => array(
-                'EventEspresso\core\services\database\TableAnalysis' => EE_Dependency_Map::load_from_cache,
-                'EventEspresso\core\services\database\TableManager'  => EE_Dependency_Map::load_from_cache,
-            ),
-            'EE_DMS_Core_4_2_0'                                                                                           => array(
-                'EventEspresso\core\services\database\TableAnalysis' => EE_Dependency_Map::load_from_cache,
-                'EventEspresso\core\services\database\TableManager'  => EE_Dependency_Map::load_from_cache,
-            ),
-            'EE_DMS_Core_4_3_0'                                                                                           => array(
-                'EventEspresso\core\services\database\TableAnalysis' => EE_Dependency_Map::load_from_cache,
-                'EventEspresso\core\services\database\TableManager'  => EE_Dependency_Map::load_from_cache,
-            ),
-            'EE_DMS_Core_4_4_0'                                                                                           => array(
-                'EventEspresso\core\services\database\TableAnalysis' => EE_Dependency_Map::load_from_cache,
-                'EventEspresso\core\services\database\TableManager'  => EE_Dependency_Map::load_from_cache,
-            ),
-            'EE_DMS_Core_4_5_0'                                                                                           => array(
-                'EventEspresso\core\services\database\TableAnalysis' => EE_Dependency_Map::load_from_cache,
-                'EventEspresso\core\services\database\TableManager'  => EE_Dependency_Map::load_from_cache,
-            ),
-            'EE_DMS_Core_4_6_0'                                                                                           => array(
-                'EventEspresso\core\services\database\TableAnalysis' => EE_Dependency_Map::load_from_cache,
-                'EventEspresso\core\services\database\TableManager'  => EE_Dependency_Map::load_from_cache,
-            ),
-            'EE_DMS_Core_4_7_0'                                                                                           => array(
-                'EventEspresso\core\services\database\TableAnalysis' => EE_Dependency_Map::load_from_cache,
-                'EventEspresso\core\services\database\TableManager'  => EE_Dependency_Map::load_from_cache,
-            ),
-            'EE_DMS_Core_4_8_0'                                                                                           => array(
-                'EventEspresso\core\services\database\TableAnalysis' => EE_Dependency_Map::load_from_cache,
-                'EventEspresso\core\services\database\TableManager'  => EE_Dependency_Map::load_from_cache,
-            ),
-            'EE_DMS_Core_4_9_0'                                                                                           => array(
-                'EventEspresso\core\services\database\TableAnalysis' => EE_Dependency_Map::load_from_cache,
-                'EventEspresso\core\services\database\TableManager'  => EE_Dependency_Map::load_from_cache,
-            ),
-            'EventEspresso\core\services\assets\I18nRegistry'                                                             => array(
-                array(),
-                'EventEspresso\core\domain\Domain' => EE_Dependency_Map::load_from_cache,
-            ),
-            'EventEspresso\core\services\assets\Registry'                                                                 => array(
-                'EventEspresso\core\services\assets\AssetCollection' => EE_Dependency_Map::load_from_cache,
-                'EventEspresso\core\services\assets\I18nRegistry'    => EE_Dependency_Map::load_from_cache,
-            ),
-            'EventEspresso\core\domain\entities\shortcodes\EspressoCancelled'                                             => array(
-                'EventEspresso\core\services\cache\PostRelatedCacheManager' => EE_Dependency_Map::load_from_cache,
-            ),
-            'EventEspresso\core\domain\entities\shortcodes\EspressoCheckout'                                              => array(
-                'EventEspresso\core\services\cache\PostRelatedCacheManager' => EE_Dependency_Map::load_from_cache,
-            ),
-            'EventEspresso\core\domain\entities\shortcodes\EspressoEventAttendees'                                        => array(
-                'EventEspresso\core\services\cache\PostRelatedCacheManager' => EE_Dependency_Map::load_from_cache,
-            ),
-            'EventEspresso\core\domain\entities\shortcodes\EspressoEvents'                                                => array(
-                'EventEspresso\core\services\cache\PostRelatedCacheManager' => EE_Dependency_Map::load_from_cache,
-            ),
-            'EventEspresso\core\domain\entities\shortcodes\EspressoThankYou'                                              => array(
-                'EventEspresso\core\services\cache\PostRelatedCacheManager' => EE_Dependency_Map::load_from_cache,
-            ),
-            'EventEspresso\core\domain\entities\shortcodes\EspressoTicketSelector'                                        => array(
-                'EventEspresso\core\services\cache\PostRelatedCacheManager' => EE_Dependency_Map::load_from_cache,
-            ),
-            'EventEspresso\core\domain\entities\shortcodes\EspressoTxnPage'                                               => array(
-                'EventEspresso\core\services\cache\PostRelatedCacheManager' => EE_Dependency_Map::load_from_cache,
-            ),
-            'EventEspresso\core\services\cache\BasicCacheManager'                                                         => array(
-                'EventEspresso\core\services\cache\TransientCacheStorage' => EE_Dependency_Map::load_from_cache,
-            ),
-            'EventEspresso\core\services\cache\PostRelatedCacheManager'                                                   => array(
-                'EventEspresso\core\services\cache\TransientCacheStorage' => EE_Dependency_Map::load_from_cache,
-            ),
-            'EventEspresso\core\domain\services\validation\email\EmailValidationService'                                  => array(
-                'EE_Registration_Config'                     => EE_Dependency_Map::load_from_cache,
-                'EventEspresso\core\services\loaders\Loader' => EE_Dependency_Map::load_from_cache,
-            ),
-            'EventEspresso\core\domain\values\EmailAddress'                                                               => array(
-                null,
-                'EventEspresso\core\domain\services\validation\email\EmailValidationService' => EE_Dependency_Map::load_from_cache,
-            ),
-            'EventEspresso\core\services\orm\ModelFieldFactory'                                                           => array(
-                'EventEspresso\core\services\loaders\Loader' => EE_Dependency_Map::load_from_cache,
-            ),
-            'LEGACY_MODELS'                                                                                               => array(
-                null,
-                'EventEspresso\core\services\database\ModelFieldFactory' => EE_Dependency_Map::load_from_cache,
-            ),
-            'EE_Module_Request_Router'                                                                                    => array(
-                'EE_Request' => EE_Dependency_Map::load_from_cache,
-            ),
-            'EE_Registration_Processor'                                                                                   => array(
-                'EE_Request' => EE_Dependency_Map::load_from_cache,
-            ),
-            'EventEspresso\core\services\notifications\PersistentAdminNoticeManager'                                      => array(
-                null,
-                'EventEspresso\core\domain\services\capabilities\CapabilitiesChecker' => EE_Dependency_Map::load_from_cache,
-                'EE_Request'                                                          => EE_Dependency_Map::load_from_cache,
-            ),
-            'EventEspresso\core\services\licensing\LicenseService'                                                        => array(
-                'EventEspresso\core\domain\services\pue\Stats'  => EE_Dependency_Map::load_from_cache,
-                'EventEspresso\core\domain\services\pue\Config' => EE_Dependency_Map::load_from_cache,
-            ),
-            'EE_Admin_Transactions_List_Table'                                                                            => array(
-                null,
-                'EventEspresso\core\domain\values\session\SessionLifespan' => EE_Dependency_Map::load_from_cache,
-            ),
-            'EventEspresso\core\domain\services\pue\Stats'                                                                => array(
-                'EventEspresso\core\domain\services\pue\Config'        => EE_Dependency_Map::load_from_cache,
-                'EE_Maintenance_Mode'                                  => EE_Dependency_Map::load_from_cache,
-                'EventEspresso\core\domain\services\pue\StatsGatherer' => EE_Dependency_Map::load_from_cache,
-            ),
-            'EventEspresso\core\domain\services\pue\Config'                                                               => array(
-                'EE_Network_Config' => EE_Dependency_Map::load_from_cache,
-                'EE_Config'         => EE_Dependency_Map::load_from_cache,
-            ),
-            'EventEspresso\core\domain\services\pue\StatsGatherer'                                                        => array(
-                'EEM_Payment_Method' => EE_Dependency_Map::load_from_cache,
-                'EEM_Event'          => EE_Dependency_Map::load_from_cache,
-                'EEM_Datetime'       => EE_Dependency_Map::load_from_cache,
-                'EEM_Ticket'         => EE_Dependency_Map::load_from_cache,
-                'EEM_Registration'   => EE_Dependency_Map::load_from_cache,
-                'EEM_Transaction'    => EE_Dependency_Map::load_from_cache,
-                'EE_Config'          => EE_Dependency_Map::load_from_cache,
-            ),
-            'EventEspresso\core\domain\services\admin\ExitModal'                                                          => array(
-                'EventEspresso\core\services\assets\Registry' => EE_Dependency_Map::load_from_cache,
-            ),
-            'EventEspresso\core\domain\services\admin\PluginUpsells'                                                      => array(
-                'EventEspresso\core\domain\Domain' => EE_Dependency_Map::load_from_cache,
-            ),
-            'EventEspresso\caffeinated\modules\recaptcha_invisible\InvisibleRecaptcha'                                    => array(
-                'EE_Registration_Config' => EE_Dependency_Map::load_from_cache,
-                'EE_Session'             => EE_Dependency_Map::load_from_cache,
-            ),
-            'EventEspresso\caffeinated\modules\recaptcha_invisible\RecaptchaAdminSettings'                                => array(
-                'EE_Registration_Config' => EE_Dependency_Map::load_from_cache,
-            ),
-            'EventEspresso\modules\ticket_selector\ProcessTicketSelector'                                                 => array(
-                'EE_Core_Config'                                                          => EE_Dependency_Map::load_from_cache,
-                'EventEspresso\core\services\request\Request'                             => EE_Dependency_Map::load_from_cache,
-                'EE_Session'                                                              => EE_Dependency_Map::load_from_cache,
-                'EEM_Ticket'                                                              => EE_Dependency_Map::load_from_cache,
-                'EventEspresso\modules\ticket_selector\TicketDatetimeAvailabilityTracker' => EE_Dependency_Map::load_from_cache,
-            ),
-            'EventEspresso\modules\ticket_selector\TicketDatetimeAvailabilityTracker'                                     => array(
-                'EEM_Datetime' => EE_Dependency_Map::load_from_cache,
-            ),
-            'EventEspresso\core\domain\entities\custom_post_types\CustomPostTypeDefinitions'                              => array(
-                'EE_Core_Config'                             => EE_Dependency_Map::load_from_cache,
-                'EventEspresso\core\services\loaders\Loader' => EE_Dependency_Map::load_from_cache,
-            ),
-            'EventEspresso\core\domain\services\custom_post_types\RegisterCustomPostTypes'                                => array(
-                'EventEspresso\core\domain\entities\custom_post_types\CustomPostTypeDefinitions' => EE_Dependency_Map::load_from_cache,
-            ),
-            'EventEspresso\core\domain\services\custom_post_types\RegisterCustomTaxonomies'                               => array(
-                'EventEspresso\core\domain\entities\custom_post_types\CustomTaxonomyDefinitions' => EE_Dependency_Map::load_from_cache,
-            ),
-            'EE_CPT_Strategy'                                                                                             => array(
-                'EventEspresso\core\domain\entities\custom_post_types\CustomPostTypeDefinitions' => EE_Dependency_Map::load_from_cache,
-                'EventEspresso\core\domain\entities\custom_post_types\CustomTaxonomyDefinitions' => EE_Dependency_Map::load_from_cache,
-            ),
-            'EventEspresso\core\services\loaders\ObjectIdentifier'                                                        => array(
-                'EventEspresso\core\services\loaders\ClassInterfaceCache' => EE_Dependency_Map::load_from_cache,
-            ),
-            'EventEspresso\core\domain\services\assets\CoreAssetManager'                                                  => array(
-                'EventEspresso\core\services\assets\AssetCollection' => EE_Dependency_Map::load_from_cache,
-                'EE_Currency_Config'                                 => EE_Dependency_Map::load_from_cache,
-                'EE_Template_Config'                                 => EE_Dependency_Map::load_from_cache,
-                'EventEspresso\core\domain\Domain'                   => EE_Dependency_Map::load_from_cache,
-                'EventEspresso\core\services\assets\Registry'        => EE_Dependency_Map::load_from_cache,
-            ),
-            'EventEspresso\core\domain\services\admin\privacy\policy\PrivacyPolicy' => array(
-                'EEM_Payment_Method' => EE_Dependency_Map::load_from_cache,
-                'EventEspresso\core\domain\values\session\SessionLifespan' => EE_Dependency_Map::load_from_cache
-            ),
-            'EventEspresso\core\domain\services\admin\privacy\export\ExportAttendee' => array(
-                'EEM_Attendee' => EE_Dependency_Map::load_from_cache,
-            ),
-            'EventEspresso\core\domain\services\admin\privacy\export\ExportAttendeeBillingData' => array(
-                'EEM_Attendee' => EE_Dependency_Map::load_from_cache,
-                'EEM_Payment_Method' => EE_Dependency_Map::load_from_cache
-            ),
-            'EventEspresso\core\domain\services\admin\privacy\export\ExportCheckins' => array(
-                'EEM_Checkin' => EE_Dependency_Map::load_from_cache,
-            ),
-            'EventEspresso\core\domain\services\admin\privacy\export\ExportRegistration' => array(
-                'EEM_Registration' => EE_Dependency_Map::load_from_cache,
-            ),
-            'EventEspresso\core\domain\services\admin\privacy\export\ExportTransaction' => array(
-                'EEM_Transaction' => EE_Dependency_Map::load_from_cache,
-            ),
-            'EventEspresso\core\domain\services\admin\privacy\erasure\EraseAttendeeData' => array(
-                'EEM_Attendee' => EE_Dependency_Map::load_from_cache,
-            ),
-            'EventEspresso\core\domain\services\admin\privacy\erasure\EraseAnswers' => array(
-                'EEM_Answer' => EE_Dependency_Map::load_from_cache,
-                'EEM_Question' => EE_Dependency_Map::load_from_cache,
-            ),
-            'EventEspresso\core\domain\services\admin\privacy\forms\PrivacySettingsFormHandler' => array(
-                'EE_Registry' => EE_Dependency_Map::load_from_cache,
-                'EE_Config' => EE_Dependency_Map::load_from_cache
-            )
-        );
-    }
-
-
-    /**
-     * Registers how core classes are loaded.
-     * This can either be done by simply providing the name of one of the EE_Registry loader methods such as:
-     *        'EE_Request_Handler' => 'load_core'
-     *        'EE_Messages_Queue'  => 'load_lib'
-     *        'EEH_Debug_Tools'    => 'load_helper'
-     * or, if greater control is required, by providing a custom closure. For example:
-     *        'Some_Class' => function () {
-     *            return new Some_Class();
-     *        },
-     * This is required for instantiating dependencies
-     * where an interface has been type hinted in a class constructor. For example:
-     *        'Required_Interface' => function () {
-     *            return new A_Class_That_Implements_Required_Interface();
-     *        },
-     */
-    protected function _register_core_class_loaders()
-    {
-        // for PHP5.3 compat, we need to register any properties called here in a variable because `$this` cannot
-        // be used in a closure.
-        $request = &$this->request;
-        $response = &$this->response;
-        $legacy_request = &$this->legacy_request;
-        // $loader = &$this->loader;
-        $this->_class_loaders = array(
-            // load_core
-            'EE_Capabilities'                              => 'load_core',
-            'EE_Encryption'                                => 'load_core',
-            'EE_Front_Controller'                          => 'load_core',
-            'EE_Module_Request_Router'                     => 'load_core',
-            'EE_Registry'                                  => 'load_core',
-            'EE_Request'                                   => function () use (&$legacy_request) {
-                return $legacy_request;
-            },
-            'EventEspresso\core\services\request\Request'  => function () use (&$request) {
-                return $request;
-            },
-            'EventEspresso\core\services\request\Response' => function () use (&$response) {
-                return $response;
-            },
-            'EE_Base'                                      => 'load_core',
-            'EE_Request_Handler'                           => 'load_core',
-            'EE_Session'                                   => 'load_core',
-            'EE_Cron_Tasks'                                => 'load_core',
-            'EE_System'                                    => 'load_core',
-            'EE_Maintenance_Mode'                          => 'load_core',
-            'EE_Register_CPTs'                             => 'load_core',
-            'EE_Admin'                                     => 'load_core',
-            'EE_CPT_Strategy'                              => 'load_core',
-            // load_lib
-            'EE_Message_Resource_Manager'                  => 'load_lib',
-            'EE_Message_Type_Collection'                   => 'load_lib',
-            'EE_Message_Type_Collection_Loader'            => 'load_lib',
-            'EE_Messenger_Collection'                      => 'load_lib',
-            'EE_Messenger_Collection_Loader'               => 'load_lib',
-            'EE_Messages_Processor'                        => 'load_lib',
-            'EE_Message_Repository'                        => 'load_lib',
-            'EE_Messages_Queue'                            => 'load_lib',
-            'EE_Messages_Data_Handler_Collection'          => 'load_lib',
-            'EE_Message_Template_Group_Collection'         => 'load_lib',
-            'EE_Payment_Method_Manager'                    => 'load_lib',
-            'EE_Messages_Generator'                        => function () {
-                return EE_Registry::instance()->load_lib(
-                    'Messages_Generator',
-                    array(),
-                    false,
-                    false
-                );
-            },
-            'EE_Messages_Template_Defaults'                => function ($arguments = array()) {
-                return EE_Registry::instance()->load_lib(
-                    'Messages_Template_Defaults',
-                    $arguments,
-                    false,
-                    false
-                );
-            },
-            // load_helper
-            'EEH_Parse_Shortcodes'                         => function () {
-                if (EE_Registry::instance()->load_helper('Parse_Shortcodes')) {
-                    return new EEH_Parse_Shortcodes();
-                }
-                return null;
-            },
-            'EE_Template_Config'                           => function () {
-                return EE_Config::instance()->template_settings;
-            },
-            'EE_Currency_Config'                           => function () {
-                return EE_Config::instance()->currency;
-            },
-            'EE_Registration_Config'                       => function () {
-                return EE_Config::instance()->registration;
-            },
-            'EE_Core_Config'                               => function () {
-                return EE_Config::instance()->core;
-            },
-            'EventEspresso\core\services\loaders\Loader'   => function () {
-                return LoaderFactory::getLoader();
-            },
-            'EE_Network_Config'                            => function () {
-                return EE_Network_Config::instance();
-            },
-            'EE_Config'                                    => function () {
-                return EE_Config::instance();
-            },
-            'EventEspresso\core\domain\Domain'             => function () {
-                return DomainFactory::getEventEspressoCoreDomain();
-            },
-            'EE_Admin_Config'                              => function () {
-                return EE_Config::instance()->admin;
-            }
-        );
-    }
-
-
-    /**
-     * can be used for supplying alternate names for classes,
-     * or for connecting interface names to instantiable classes
-     */
-    protected function _register_core_aliases()
-    {
-        $aliases = array(
-            'CommandBusInterface'                                                          => 'EventEspresso\core\services\commands\CommandBusInterface',
-            'EventEspresso\core\services\commands\CommandBusInterface'                     => 'EventEspresso\core\services\commands\CommandBus',
-            'CommandHandlerManagerInterface'                                               => 'EventEspresso\core\services\commands\CommandHandlerManagerInterface',
-            'EventEspresso\core\services\commands\CommandHandlerManagerInterface'          => 'EventEspresso\core\services\commands\CommandHandlerManager',
-            'CapChecker'                                                                   => 'EventEspresso\core\services\commands\middleware\CapChecker',
-            'AddActionHook'                                                                => 'EventEspresso\core\services\commands\middleware\AddActionHook',
-            'CapabilitiesChecker'                                                          => 'EventEspresso\core\domain\services\capabilities\CapabilitiesChecker',
-            'CapabilitiesCheckerInterface'                                                 => 'EventEspresso\core\domain\services\capabilities\CapabilitiesCheckerInterface',
-            'EventEspresso\core\domain\services\capabilities\CapabilitiesCheckerInterface' => 'EventEspresso\core\domain\services\capabilities\CapabilitiesChecker',
-            'CreateRegistrationService'                                                    => 'EventEspresso\core\domain\services\registration\CreateRegistrationService',
-            'CreateRegistrationCommandHandler'                                             => 'EventEspresso\core\services\commands\registration\CreateRegistrationCommand',
-            'CopyRegistrationDetailsCommandHandler'                                        => 'EventEspresso\core\services\commands\registration\CopyRegistrationDetailsCommand',
-            'CopyRegistrationPaymentsCommandHandler'                                       => 'EventEspresso\core\services\commands\registration\CopyRegistrationPaymentsCommand',
-            'CancelRegistrationAndTicketLineItemCommandHandler'                            => 'EventEspresso\core\services\commands\registration\CancelRegistrationAndTicketLineItemCommandHandler',
-            'UpdateRegistrationAndTransactionAfterChangeCommandHandler'                    => 'EventEspresso\core\services\commands\registration\UpdateRegistrationAndTransactionAfterChangeCommandHandler',
-            'CreateTicketLineItemCommandHandler'                                           => 'EventEspresso\core\services\commands\ticket\CreateTicketLineItemCommand',
-            'CreateTransactionCommandHandler'                                              => 'EventEspresso\core\services\commands\transaction\CreateTransactionCommandHandler',
-            'CreateAttendeeCommandHandler'                                                 => 'EventEspresso\core\services\commands\attendee\CreateAttendeeCommandHandler',
-            'TableManager'                                                                 => 'EventEspresso\core\services\database\TableManager',
-            'TableAnalysis'                                                                => 'EventEspresso\core\services\database\TableAnalysis',
-            'EspressoShortcode'                                                            => 'EventEspresso\core\services\shortcodes\EspressoShortcode',
-            'ShortcodeInterface'                                                           => 'EventEspresso\core\services\shortcodes\ShortcodeInterface',
-            'EventEspresso\core\services\shortcodes\ShortcodeInterface'                    => 'EventEspresso\core\services\shortcodes\EspressoShortcode',
-            'EventEspresso\core\services\cache\CacheStorageInterface'                      => 'EventEspresso\core\services\cache\TransientCacheStorage',
-            'LoaderInterface'                                                              => 'EventEspresso\core\services\loaders\LoaderInterface',
-            'EventEspresso\core\services\loaders\LoaderInterface'                          => 'EventEspresso\core\services\loaders\Loader',
-            'CommandFactoryInterface'                                                      => 'EventEspresso\core\services\commands\CommandFactoryInterface',
-            'EventEspresso\core\services\commands\CommandFactoryInterface'                 => 'EventEspresso\core\services\commands\CommandFactory',
-            'EventEspresso\core\domain\services\session\SessionIdentifierInterface'        => 'EE_Session',
-            'EmailValidatorInterface'                                                      => 'EventEspresso\core\domain\services\validation\email\EmailValidatorInterface',
-            'EventEspresso\core\domain\services\validation\email\EmailValidatorInterface'  => 'EventEspresso\core\domain\services\validation\email\EmailValidationService',
-            'NoticeConverterInterface'                                                     => 'EventEspresso\core\services\notices\NoticeConverterInterface',
-            'EventEspresso\core\services\notices\NoticeConverterInterface'                 => 'EventEspresso\core\services\notices\ConvertNoticesToEeErrors',
-            'NoticesContainerInterface'                                                    => 'EventEspresso\core\services\notices\NoticesContainerInterface',
-            'EventEspresso\core\services\notices\NoticesContainerInterface'                => 'EventEspresso\core\services\notices\NoticesContainer',
-            'EventEspresso\core\services\request\RequestInterface'                         => 'EventEspresso\core\services\request\Request',
-            'EventEspresso\core\services\request\ResponseInterface'                        => 'EventEspresso\core\services\request\Response',
-            'EventEspresso\core\domain\DomainInterface'                                    => 'EventEspresso\core\domain\Domain',
-        );
-        foreach ($aliases as $alias => $fqn) {
-            if (is_array($fqn)) {
-                foreach ($fqn as $class => $for_class) {
-                    $this->class_cache->addAlias($class, $alias, $for_class);
-                }
-                continue;
-            }
-            $this->class_cache->addAlias($fqn, $alias);
-        }
-        if (! (defined('DOING_AJAX') && DOING_AJAX) && is_admin()) {
-            $this->class_cache->addAlias(
-                'EventEspresso\core\services\notices\ConvertNoticesToAdminNotices',
-                'EventEspresso\core\services\notices\NoticeConverterInterface'
-            );
-        }
-    }
-
-
-    /**
-     * This is used to reset the internal map and class_loaders to their original default state at the beginning of the
-     * request Primarily used by unit tests.
-     */
-    public function reset()
-    {
-        $this->_register_core_class_loaders();
-        $this->_register_core_dependencies();
-    }
-
-
-    /**
-     * PLZ NOTE: a better name for this method would be is_alias()
-     * because it returns TRUE if the provided fully qualified name IS an alias
-     * WHY?
-     * Because if a class is type hinting for a concretion,
-     * then why would we need to find another class to supply it?
-     * ie: if a class asks for `Fully/Qualified/Namespace/SpecificClassName`,
-     * then give it an instance of `Fully/Qualified/Namespace/SpecificClassName`.
-     * Don't go looking for some substitute.
-     * Whereas if a class is type hinting for an interface...
-     * then we need to find an actual class to use.
-     * So the interface IS the alias for some other FQN,
-     * and we need to find out if `Fully/Qualified/Namespace/SomeInterface`
-     * represents some other class.
-     *
-     * @deprecated 4.9.62.p
-     * @param string $fqn
-     * @param string $for_class
-     * @return bool
-     */
-    public function has_alias($fqn = '', $for_class = '')
-    {
-        return $this->isAlias($fqn, $for_class);
-    }
-
-
-    /**
-     * PLZ NOTE: a better name for this method would be get_fqn_for_alias()
-     * because it returns a FQN for provided alias if one exists, otherwise returns the original $alias
-     * functions recursively, so that multiple aliases can be used to drill down to a FQN
-     *  for example:
-     *      if the following two entries were added to the _aliases array:
-     *          array(
-     *              'interface_alias'           => 'some\namespace\interface'
-     *              'some\namespace\interface'  => 'some\namespace\classname'
-     *          )
-     *      then one could use EE_Registry::instance()->create( 'interface_alias' )
-     *      to load an instance of 'some\namespace\classname'
-     *
-     * @deprecated 4.9.62.p
-     * @param string $alias
-     * @param string $for_class
-     * @return string
-     */
-    public function get_alias($alias = '', $for_class = '')
-    {
-        return $this->getFqnForAlias($alias, $for_class);
-    }
+	/**
+	 * This means that the requested class dependency is not present in the dependency map
+	 */
+	const not_registered = 0;
+
+	/**
+	 * This instructs class loaders to ALWAYS return a newly instantiated object for the requested class.
+	 */
+	const load_new_object = 1;
+
+	/**
+	 * This instructs class loaders to return a previously instantiated and cached object for the requested class.
+	 * IF a previously instantiated object does not exist, a new one will be created and added to the cache.
+	 */
+	const load_from_cache = 2;
+
+	/**
+	 * When registering a dependency,
+	 * this indicates to keep any existing dependencies that already exist,
+	 * and simply discard any new dependencies declared in the incoming data
+	 */
+	const KEEP_EXISTING_DEPENDENCIES = 0;
+
+	/**
+	 * When registering a dependency,
+	 * this indicates to overwrite any existing dependencies that already exist using the incoming data
+	 */
+	const OVERWRITE_DEPENDENCIES = 1;
+
+
+	/**
+	 * @type EE_Dependency_Map $_instance
+	 */
+	protected static $_instance;
+
+	/**
+	 * @var ClassInterfaceCache $class_cache
+	 */
+	private $class_cache;
+
+	/**
+	 * @type RequestInterface $request
+	 */
+	protected $request;
+
+	/**
+	 * @type LegacyRequestInterface $legacy_request
+	 */
+	protected $legacy_request;
+
+	/**
+	 * @type ResponseInterface $response
+	 */
+	protected $response;
+
+	/**
+	 * @type LoaderInterface $loader
+	 */
+	protected $loader;
+
+	/**
+	 * @type array $_dependency_map
+	 */
+	protected $_dependency_map = array();
+
+	/**
+	 * @type array $_class_loaders
+	 */
+	protected $_class_loaders = array();
+
+
+	/**
+	 * EE_Dependency_Map constructor.
+	 *
+	 * @param ClassInterfaceCache $class_cache
+	 */
+	protected function __construct(ClassInterfaceCache $class_cache)
+	{
+		$this->class_cache = $class_cache;
+		do_action('EE_Dependency_Map____construct', $this);
+	}
+
+
+	/**
+	 * @return void
+	 */
+	public function initialize()
+	{
+		$this->_register_core_dependencies();
+		$this->_register_core_class_loaders();
+		$this->_register_core_aliases();
+	}
+
+
+	/**
+	 * @singleton method used to instantiate class object
+	 * @param ClassInterfaceCache|null $class_cache
+	 * @return EE_Dependency_Map
+	 */
+	public static function instance(ClassInterfaceCache $class_cache = null)
+	{
+		// check if class object is instantiated, and instantiated properly
+		if (! self::$_instance instanceof EE_Dependency_Map
+			&& $class_cache instanceof ClassInterfaceCache
+		) {
+			self::$_instance = new EE_Dependency_Map($class_cache);
+		}
+		return self::$_instance;
+	}
+
+
+	/**
+	 * @param RequestInterface $request
+	 */
+	public function setRequest(RequestInterface $request)
+	{
+		$this->request = $request;
+	}
+
+
+	/**
+	 * @param LegacyRequestInterface $legacy_request
+	 */
+	public function setLegacyRequest(LegacyRequestInterface $legacy_request)
+	{
+		$this->legacy_request = $legacy_request;
+	}
+
+
+	/**
+	 * @param ResponseInterface $response
+	 */
+	public function setResponse(ResponseInterface $response)
+	{
+		$this->response = $response;
+	}
+
+
+	/**
+	 * @param LoaderInterface $loader
+	 */
+	public function setLoader(LoaderInterface $loader)
+	{
+		$this->loader = $loader;
+	}
+
+
+	/**
+	 * @param string $class
+	 * @param array  $dependencies
+	 * @param int    $overwrite
+	 * @return bool
+	 */
+	public static function register_dependencies(
+		$class,
+		array $dependencies,
+		$overwrite = EE_Dependency_Map::KEEP_EXISTING_DEPENDENCIES
+	) {
+		return self::$_instance->registerDependencies($class, $dependencies, $overwrite);
+	}
+
+
+	/**
+	 * Assigns an array of class names and corresponding load sources (new or cached)
+	 * to the class specified by the first parameter.
+	 * IMPORTANT !!!
+	 * The order of elements in the incoming $dependencies array MUST match
+	 * the order of the constructor parameters for the class in question.
+	 * This is especially important when overriding any existing dependencies that are registered.
+	 * the third parameter controls whether any duplicate dependencies are overwritten or not.
+	 *
+	 * @param string $class
+	 * @param array  $dependencies
+	 * @param int    $overwrite
+	 * @return bool
+	 */
+	public function registerDependencies(
+		$class,
+		array $dependencies,
+		$overwrite = EE_Dependency_Map::KEEP_EXISTING_DEPENDENCIES
+	) {
+		$class = trim($class, '\\');
+		$registered = false;
+		if (empty(self::$_instance->_dependency_map[ $class ])) {
+			self::$_instance->_dependency_map[ $class ] = array();
+		}
+		// we need to make sure that any aliases used when registering a dependency
+		// get resolved to the correct class name
+		foreach ($dependencies as $dependency => $load_source) {
+			$alias = self::$_instance->getFqnForAlias($dependency);
+			if ($overwrite === EE_Dependency_Map::OVERWRITE_DEPENDENCIES
+				|| ! isset(self::$_instance->_dependency_map[ $class ][ $alias ])
+			) {
+				unset($dependencies[ $dependency ]);
+				$dependencies[ $alias ] = $load_source;
+				$registered = true;
+			}
+		}
+		// now add our two lists of dependencies together.
+		// using Union (+=) favours the arrays in precedence from left to right,
+		// so $dependencies is NOT overwritten because it is listed first
+		// ie: with A = B + C, entries in B take precedence over duplicate entries in C
+		// Union is way faster than array_merge() but should be used with caution...
+		// especially with numerically indexed arrays
+		$dependencies += self::$_instance->_dependency_map[ $class ];
+		// now we need to ensure that the resulting dependencies
+		// array only has the entries that are required for the class
+		// so first count how many dependencies were originally registered for the class
+		$dependency_count = count(self::$_instance->_dependency_map[ $class ]);
+		// if that count is non-zero (meaning dependencies were already registered)
+		self::$_instance->_dependency_map[ $class ] = $dependency_count
+			// then truncate the  final array to match that count
+			? array_slice($dependencies, 0, $dependency_count)
+			// otherwise just take the incoming array because nothing previously existed
+			: $dependencies;
+		return $registered;
+	}
+
+
+	/**
+	 * @param string $class_name
+	 * @param string $loader
+	 * @return bool
+	 * @throws DomainException
+	 */
+	public static function register_class_loader($class_name, $loader = 'load_core')
+	{
+		if (! $loader instanceof Closure && strpos($class_name, '\\') !== false) {
+			throw new DomainException(
+				esc_html__('Don\'t use class loaders for FQCNs.', 'event_espresso')
+			);
+		}
+		// check that loader is callable or method starts with "load_" and exists in EE_Registry
+		if (! is_callable($loader)
+			&& (
+				strpos($loader, 'load_') !== 0
+				|| ! method_exists('EE_Registry', $loader)
+			)
+		) {
+			throw new DomainException(
+				sprintf(
+					esc_html__(
+						'"%1$s" is not a valid loader method on EE_Registry.',
+						'event_espresso'
+					),
+					$loader
+				)
+			);
+		}
+		$class_name = self::$_instance->getFqnForAlias($class_name);
+		if (! isset(self::$_instance->_class_loaders[ $class_name ])) {
+			self::$_instance->_class_loaders[ $class_name ] = $loader;
+			return true;
+		}
+		return false;
+	}
+
+
+	/**
+	 * @return array
+	 */
+	public function dependency_map()
+	{
+		return $this->_dependency_map;
+	}
+
+
+	/**
+	 * returns TRUE if dependency map contains a listing for the provided class name
+	 *
+	 * @param string $class_name
+	 * @return boolean
+	 */
+	public function has($class_name = '')
+	{
+		// all legacy models have the same dependencies
+		if (strpos($class_name, 'EEM_') === 0) {
+			$class_name = 'LEGACY_MODELS';
+		}
+		return isset($this->_dependency_map[ $class_name ]) ? true : false;
+	}
+
+
+	/**
+	 * returns TRUE if dependency map contains a listing for the provided class name AND dependency
+	 *
+	 * @param string $class_name
+	 * @param string $dependency
+	 * @return bool
+	 */
+	public function has_dependency_for_class($class_name = '', $dependency = '')
+	{
+		// all legacy models have the same dependencies
+		if (strpos($class_name, 'EEM_') === 0) {
+			$class_name = 'LEGACY_MODELS';
+		}
+		$dependency = $this->getFqnForAlias($dependency, $class_name);
+		return isset($this->_dependency_map[ $class_name ][ $dependency ])
+			? true
+			: false;
+	}
+
+
+	/**
+	 * returns loading strategy for whether a previously cached dependency should be loaded or a new instance returned
+	 *
+	 * @param string $class_name
+	 * @param string $dependency
+	 * @return int
+	 */
+	public function loading_strategy_for_class_dependency($class_name = '', $dependency = '')
+	{
+		// all legacy models have the same dependencies
+		if (strpos($class_name, 'EEM_') === 0) {
+			$class_name = 'LEGACY_MODELS';
+		}
+		$dependency = $this->getFqnForAlias($dependency);
+		return $this->has_dependency_for_class($class_name, $dependency)
+			? $this->_dependency_map[ $class_name ][ $dependency ]
+			: EE_Dependency_Map::not_registered;
+	}
+
+
+	/**
+	 * @param string $class_name
+	 * @return string | Closure
+	 */
+	public function class_loader($class_name)
+	{
+		// all legacy models use load_model()
+		if (strpos($class_name, 'EEM_') === 0) {
+			return 'load_model';
+		}
+		$class_name = $this->getFqnForAlias($class_name);
+		return isset($this->_class_loaders[ $class_name ]) ? $this->_class_loaders[ $class_name ] : '';
+	}
+
+
+	/**
+	 * @return array
+	 */
+	public function class_loaders()
+	{
+		return $this->_class_loaders;
+	}
+
+
+	/**
+	 * adds an alias for a classname
+	 *
+	 * @param string $fqcn      the class name that should be used (concrete class to replace interface)
+	 * @param string $alias     the class name that would be type hinted for (abstract parent or interface)
+	 * @param string $for_class the class that has the dependency (is type hinting for the interface)
+	 */
+	public function add_alias($fqcn, $alias, $for_class = '')
+	{
+		$this->class_cache->addAlias($fqcn, $alias, $for_class);
+	}
+
+
+	/**
+	 * Returns TRUE if the provided fully qualified name IS an alias
+	 * WHY?
+	 * Because if a class is type hinting for a concretion,
+	 * then why would we need to find another class to supply it?
+	 * ie: if a class asks for `Fully/Qualified/Namespace/SpecificClassName`,
+	 * then give it an instance of `Fully/Qualified/Namespace/SpecificClassName`.
+	 * Don't go looking for some substitute.
+	 * Whereas if a class is type hinting for an interface...
+	 * then we need to find an actual class to use.
+	 * So the interface IS the alias for some other FQN,
+	 * and we need to find out if `Fully/Qualified/Namespace/SomeInterface`
+	 * represents some other class.
+	 *
+	 * @param string $fqn
+	 * @param string $for_class
+	 * @return bool
+	 */
+	public function isAlias($fqn = '', $for_class = '')
+	{
+		return $this->class_cache->isAlias($fqn, $for_class);
+	}
+
+
+	/**
+	 * Returns a FQN for provided alias if one exists, otherwise returns the original $alias
+	 * functions recursively, so that multiple aliases can be used to drill down to a FQN
+	 *  for example:
+	 *      if the following two entries were added to the _aliases array:
+	 *          array(
+	 *              'interface_alias'           => 'some\namespace\interface'
+	 *              'some\namespace\interface'  => 'some\namespace\classname'
+	 *          )
+	 *      then one could use EE_Registry::instance()->create( 'interface_alias' )
+	 *      to load an instance of 'some\namespace\classname'
+	 *
+	 * @param string $alias
+	 * @param string $for_class
+	 * @return string
+	 */
+	public function getFqnForAlias($alias = '', $for_class = '')
+	{
+		return (string) $this->class_cache->getFqnForAlias($alias, $for_class);
+	}
+
+
+	/**
+	 * Registers the core dependencies and whether a previously instantiated object should be loaded from the cache,
+	 * if one exists, or whether a new object should be generated every time the requested class is loaded.
+	 * This is done by using the following class constants:
+	 *        EE_Dependency_Map::load_from_cache - loads previously instantiated object
+	 *        EE_Dependency_Map::load_new_object - generates a new object every time
+	 */
+	protected function _register_core_dependencies()
+	{
+		$this->_dependency_map = array(
+			'EE_Request_Handler'                                                                                          => array(
+				'EE_Request' => EE_Dependency_Map::load_from_cache,
+			),
+			'EE_System'                                                                                                   => array(
+				'EE_Registry'                                 => EE_Dependency_Map::load_from_cache,
+				'EventEspresso\core\services\loaders\Loader'  => EE_Dependency_Map::load_from_cache,
+				'EventEspresso\core\services\request\Request' => EE_Dependency_Map::load_from_cache,
+				'EE_Maintenance_Mode'                         => EE_Dependency_Map::load_from_cache,
+			),
+			'EE_Session'                                                                                                  => array(
+				'EventEspresso\core\services\cache\TransientCacheStorage'  => EE_Dependency_Map::load_from_cache,
+				'EventEspresso\core\domain\values\session\SessionLifespan' => EE_Dependency_Map::load_from_cache,
+				'EventEspresso\core\services\request\Request'              => EE_Dependency_Map::load_from_cache,
+				'EE_Encryption'                                            => EE_Dependency_Map::load_from_cache,
+			),
+			'EE_Cart'                                                                                                     => array(
+				'EE_Session' => EE_Dependency_Map::load_from_cache,
+			),
+			'EE_Front_Controller'                                                                                         => array(
+				'EE_Registry'              => EE_Dependency_Map::load_from_cache,
+				'EE_Request_Handler'       => EE_Dependency_Map::load_from_cache,
+				'EE_Module_Request_Router' => EE_Dependency_Map::load_from_cache,
+			),
+			'EE_Messenger_Collection_Loader'                                                                              => array(
+				'EE_Messenger_Collection' => EE_Dependency_Map::load_new_object,
+			),
+			'EE_Message_Type_Collection_Loader'                                                                           => array(
+				'EE_Message_Type_Collection' => EE_Dependency_Map::load_new_object,
+			),
+			'EE_Message_Resource_Manager'                                                                                 => array(
+				'EE_Messenger_Collection_Loader'    => EE_Dependency_Map::load_new_object,
+				'EE_Message_Type_Collection_Loader' => EE_Dependency_Map::load_new_object,
+				'EEM_Message_Template_Group'        => EE_Dependency_Map::load_from_cache,
+			),
+			'EE_Message_Factory'                                                                                          => array(
+				'EE_Message_Resource_Manager' => EE_Dependency_Map::load_from_cache,
+			),
+			'EE_messages'                                                                                                 => array(
+				'EE_Message_Resource_Manager' => EE_Dependency_Map::load_from_cache,
+			),
+			'EE_Messages_Generator'                                                                                       => array(
+				'EE_Messages_Queue'                    => EE_Dependency_Map::load_new_object,
+				'EE_Messages_Data_Handler_Collection'  => EE_Dependency_Map::load_new_object,
+				'EE_Message_Template_Group_Collection' => EE_Dependency_Map::load_new_object,
+				'EEH_Parse_Shortcodes'                 => EE_Dependency_Map::load_from_cache,
+			),
+			'EE_Messages_Processor'                                                                                       => array(
+				'EE_Message_Resource_Manager' => EE_Dependency_Map::load_from_cache,
+			),
+			'EE_Messages_Queue'                                                                                           => array(
+				'EE_Message_Repository' => EE_Dependency_Map::load_new_object,
+			),
+			'EE_Messages_Template_Defaults'                                                                               => array(
+				'EEM_Message_Template_Group' => EE_Dependency_Map::load_from_cache,
+				'EEM_Message_Template'       => EE_Dependency_Map::load_from_cache,
+			),
+			'EE_Message_To_Generate_From_Request'                                                                         => array(
+				'EE_Message_Resource_Manager' => EE_Dependency_Map::load_from_cache,
+				'EE_Request_Handler'          => EE_Dependency_Map::load_from_cache,
+			),
+			'EventEspresso\core\services\commands\CommandBus'                                                             => array(
+				'EventEspresso\core\services\commands\CommandHandlerManager' => EE_Dependency_Map::load_from_cache,
+			),
+			'EventEspresso\services\commands\CommandHandler'                                                              => array(
+				'EE_Registry'         => EE_Dependency_Map::load_from_cache,
+				'CommandBusInterface' => EE_Dependency_Map::load_from_cache,
+			),
+			'EventEspresso\core\services\commands\CommandHandlerManager'                                                  => array(
+				'EventEspresso\core\services\loaders\Loader' => EE_Dependency_Map::load_from_cache,
+			),
+			'EventEspresso\core\services\commands\CompositeCommandHandler'                                                => array(
+				'EventEspresso\core\services\commands\CommandBus'     => EE_Dependency_Map::load_from_cache,
+				'EventEspresso\core\services\commands\CommandFactory' => EE_Dependency_Map::load_from_cache,
+			),
+			'EventEspresso\core\services\commands\CommandFactory'                                                         => array(
+				'EventEspresso\core\services\loaders\Loader' => EE_Dependency_Map::load_from_cache,
+			),
+			'EventEspresso\core\services\commands\middleware\CapChecker'                                                  => array(
+				'EventEspresso\core\domain\services\capabilities\CapabilitiesChecker' => EE_Dependency_Map::load_from_cache,
+			),
+			'EventEspresso\core\domain\services\capabilities\CapabilitiesChecker'                                         => array(
+				'EE_Capabilities' => EE_Dependency_Map::load_from_cache,
+			),
+			'EventEspresso\core\domain\services\capabilities\RegistrationsCapChecker'                                     => array(
+				'EE_Capabilities' => EE_Dependency_Map::load_from_cache,
+			),
+			'EventEspresso\core\services\commands\registration\CreateRegistrationCommandHandler'                          => array(
+				'EventEspresso\core\domain\services\registration\CreateRegistrationService' => EE_Dependency_Map::load_from_cache,
+			),
+			'EventEspresso\core\services\commands\registration\CopyRegistrationDetailsCommandHandler'                     => array(
+				'EventEspresso\core\domain\services\registration\CopyRegistrationService' => EE_Dependency_Map::load_from_cache,
+			),
+			'EventEspresso\core\services\commands\registration\CopyRegistrationPaymentsCommandHandler'                    => array(
+				'EventEspresso\core\domain\services\registration\CopyRegistrationService' => EE_Dependency_Map::load_from_cache,
+			),
+			'EventEspresso\core\services\commands\registration\CancelRegistrationAndTicketLineItemCommandHandler'         => array(
+				'EventEspresso\core\domain\services\registration\CancelTicketLineItemService' => EE_Dependency_Map::load_from_cache,
+			),
+			'EventEspresso\core\services\commands\registration\UpdateRegistrationAndTransactionAfterChangeCommandHandler' => array(
+				'EventEspresso\core\domain\services\registration\UpdateRegistrationService' => EE_Dependency_Map::load_from_cache,
+			),
+			'EventEspresso\core\services\commands\ticket\CreateTicketLineItemCommandHandler'                              => array(
+				'EventEspresso\core\domain\services\ticket\CreateTicketLineItemService' => EE_Dependency_Map::load_from_cache,
+			),
+			'EventEspresso\core\services\commands\ticket\CancelTicketLineItemCommandHandler'                              => array(
+				'EventEspresso\core\domain\services\ticket\CancelTicketLineItemService' => EE_Dependency_Map::load_from_cache,
+			),
+			'EventEspresso\core\domain\services\registration\CancelRegistrationService'                                   => array(
+				'EventEspresso\core\domain\services\ticket\CancelTicketLineItemService' => EE_Dependency_Map::load_from_cache,
+			),
+			'EventEspresso\core\services\commands\attendee\CreateAttendeeCommandHandler'                                  => array(
+				'EEM_Attendee' => EE_Dependency_Map::load_from_cache,
+			),
+			'EventEspresso\core\services\database\TableManager'                                                           => array(
+				'EventEspresso\core\services\database\TableAnalysis' => EE_Dependency_Map::load_from_cache,
+			),
+			'EE_Data_Migration_Class_Base'                                                                                => array(
+				'EventEspresso\core\services\database\TableAnalysis' => EE_Dependency_Map::load_from_cache,
+				'EventEspresso\core\services\database\TableManager'  => EE_Dependency_Map::load_from_cache,
+			),
+			'EE_DMS_Core_4_1_0'                                                                                           => array(
+				'EventEspresso\core\services\database\TableAnalysis' => EE_Dependency_Map::load_from_cache,
+				'EventEspresso\core\services\database\TableManager'  => EE_Dependency_Map::load_from_cache,
+			),
+			'EE_DMS_Core_4_2_0'                                                                                           => array(
+				'EventEspresso\core\services\database\TableAnalysis' => EE_Dependency_Map::load_from_cache,
+				'EventEspresso\core\services\database\TableManager'  => EE_Dependency_Map::load_from_cache,
+			),
+			'EE_DMS_Core_4_3_0'                                                                                           => array(
+				'EventEspresso\core\services\database\TableAnalysis' => EE_Dependency_Map::load_from_cache,
+				'EventEspresso\core\services\database\TableManager'  => EE_Dependency_Map::load_from_cache,
+			),
+			'EE_DMS_Core_4_4_0'                                                                                           => array(
+				'EventEspresso\core\services\database\TableAnalysis' => EE_Dependency_Map::load_from_cache,
+				'EventEspresso\core\services\database\TableManager'  => EE_Dependency_Map::load_from_cache,
+			),
+			'EE_DMS_Core_4_5_0'                                                                                           => array(
+				'EventEspresso\core\services\database\TableAnalysis' => EE_Dependency_Map::load_from_cache,
+				'EventEspresso\core\services\database\TableManager'  => EE_Dependency_Map::load_from_cache,
+			),
+			'EE_DMS_Core_4_6_0'                                                                                           => array(
+				'EventEspresso\core\services\database\TableAnalysis' => EE_Dependency_Map::load_from_cache,
+				'EventEspresso\core\services\database\TableManager'  => EE_Dependency_Map::load_from_cache,
+			),
+			'EE_DMS_Core_4_7_0'                                                                                           => array(
+				'EventEspresso\core\services\database\TableAnalysis' => EE_Dependency_Map::load_from_cache,
+				'EventEspresso\core\services\database\TableManager'  => EE_Dependency_Map::load_from_cache,
+			),
+			'EE_DMS_Core_4_8_0'                                                                                           => array(
+				'EventEspresso\core\services\database\TableAnalysis' => EE_Dependency_Map::load_from_cache,
+				'EventEspresso\core\services\database\TableManager'  => EE_Dependency_Map::load_from_cache,
+			),
+			'EE_DMS_Core_4_9_0'                                                                                           => array(
+				'EventEspresso\core\services\database\TableAnalysis' => EE_Dependency_Map::load_from_cache,
+				'EventEspresso\core\services\database\TableManager'  => EE_Dependency_Map::load_from_cache,
+			),
+			'EventEspresso\core\services\assets\I18nRegistry'                                                             => array(
+				array(),
+				'EventEspresso\core\domain\Domain' => EE_Dependency_Map::load_from_cache,
+			),
+			'EventEspresso\core\services\assets\Registry'                                                                 => array(
+				'EventEspresso\core\services\assets\AssetCollection' => EE_Dependency_Map::load_from_cache,
+				'EventEspresso\core\services\assets\I18nRegistry'    => EE_Dependency_Map::load_from_cache,
+			),
+			'EventEspresso\core\domain\entities\shortcodes\EspressoCancelled'                                             => array(
+				'EventEspresso\core\services\cache\PostRelatedCacheManager' => EE_Dependency_Map::load_from_cache,
+			),
+			'EventEspresso\core\domain\entities\shortcodes\EspressoCheckout'                                              => array(
+				'EventEspresso\core\services\cache\PostRelatedCacheManager' => EE_Dependency_Map::load_from_cache,
+			),
+			'EventEspresso\core\domain\entities\shortcodes\EspressoEventAttendees'                                        => array(
+				'EventEspresso\core\services\cache\PostRelatedCacheManager' => EE_Dependency_Map::load_from_cache,
+			),
+			'EventEspresso\core\domain\entities\shortcodes\EspressoEvents'                                                => array(
+				'EventEspresso\core\services\cache\PostRelatedCacheManager' => EE_Dependency_Map::load_from_cache,
+			),
+			'EventEspresso\core\domain\entities\shortcodes\EspressoThankYou'                                              => array(
+				'EventEspresso\core\services\cache\PostRelatedCacheManager' => EE_Dependency_Map::load_from_cache,
+			),
+			'EventEspresso\core\domain\entities\shortcodes\EspressoTicketSelector'                                        => array(
+				'EventEspresso\core\services\cache\PostRelatedCacheManager' => EE_Dependency_Map::load_from_cache,
+			),
+			'EventEspresso\core\domain\entities\shortcodes\EspressoTxnPage'                                               => array(
+				'EventEspresso\core\services\cache\PostRelatedCacheManager' => EE_Dependency_Map::load_from_cache,
+			),
+			'EventEspresso\core\services\cache\BasicCacheManager'                                                         => array(
+				'EventEspresso\core\services\cache\TransientCacheStorage' => EE_Dependency_Map::load_from_cache,
+			),
+			'EventEspresso\core\services\cache\PostRelatedCacheManager'                                                   => array(
+				'EventEspresso\core\services\cache\TransientCacheStorage' => EE_Dependency_Map::load_from_cache,
+			),
+			'EventEspresso\core\domain\services\validation\email\EmailValidationService'                                  => array(
+				'EE_Registration_Config'                     => EE_Dependency_Map::load_from_cache,
+				'EventEspresso\core\services\loaders\Loader' => EE_Dependency_Map::load_from_cache,
+			),
+			'EventEspresso\core\domain\values\EmailAddress'                                                               => array(
+				null,
+				'EventEspresso\core\domain\services\validation\email\EmailValidationService' => EE_Dependency_Map::load_from_cache,
+			),
+			'EventEspresso\core\services\orm\ModelFieldFactory'                                                           => array(
+				'EventEspresso\core\services\loaders\Loader' => EE_Dependency_Map::load_from_cache,
+			),
+			'LEGACY_MODELS'                                                                                               => array(
+				null,
+				'EventEspresso\core\services\database\ModelFieldFactory' => EE_Dependency_Map::load_from_cache,
+			),
+			'EE_Module_Request_Router'                                                                                    => array(
+				'EE_Request' => EE_Dependency_Map::load_from_cache,
+			),
+			'EE_Registration_Processor'                                                                                   => array(
+				'EE_Request' => EE_Dependency_Map::load_from_cache,
+			),
+			'EventEspresso\core\services\notifications\PersistentAdminNoticeManager'                                      => array(
+				null,
+				'EventEspresso\core\domain\services\capabilities\CapabilitiesChecker' => EE_Dependency_Map::load_from_cache,
+				'EE_Request'                                                          => EE_Dependency_Map::load_from_cache,
+			),
+			'EventEspresso\core\services\licensing\LicenseService'                                                        => array(
+				'EventEspresso\core\domain\services\pue\Stats'  => EE_Dependency_Map::load_from_cache,
+				'EventEspresso\core\domain\services\pue\Config' => EE_Dependency_Map::load_from_cache,
+			),
+			'EE_Admin_Transactions_List_Table'                                                                            => array(
+				null,
+				'EventEspresso\core\domain\values\session\SessionLifespan' => EE_Dependency_Map::load_from_cache,
+			),
+			'EventEspresso\core\domain\services\pue\Stats'                                                                => array(
+				'EventEspresso\core\domain\services\pue\Config'        => EE_Dependency_Map::load_from_cache,
+				'EE_Maintenance_Mode'                                  => EE_Dependency_Map::load_from_cache,
+				'EventEspresso\core\domain\services\pue\StatsGatherer' => EE_Dependency_Map::load_from_cache,
+			),
+			'EventEspresso\core\domain\services\pue\Config'                                                               => array(
+				'EE_Network_Config' => EE_Dependency_Map::load_from_cache,
+				'EE_Config'         => EE_Dependency_Map::load_from_cache,
+			),
+			'EventEspresso\core\domain\services\pue\StatsGatherer'                                                        => array(
+				'EEM_Payment_Method' => EE_Dependency_Map::load_from_cache,
+				'EEM_Event'          => EE_Dependency_Map::load_from_cache,
+				'EEM_Datetime'       => EE_Dependency_Map::load_from_cache,
+				'EEM_Ticket'         => EE_Dependency_Map::load_from_cache,
+				'EEM_Registration'   => EE_Dependency_Map::load_from_cache,
+				'EEM_Transaction'    => EE_Dependency_Map::load_from_cache,
+				'EE_Config'          => EE_Dependency_Map::load_from_cache,
+			),
+			'EventEspresso\core\domain\services\admin\ExitModal'                                                          => array(
+				'EventEspresso\core\services\assets\Registry' => EE_Dependency_Map::load_from_cache,
+			),
+			'EventEspresso\core\domain\services\admin\PluginUpsells'                                                      => array(
+				'EventEspresso\core\domain\Domain' => EE_Dependency_Map::load_from_cache,
+			),
+			'EventEspresso\caffeinated\modules\recaptcha_invisible\InvisibleRecaptcha'                                    => array(
+				'EE_Registration_Config' => EE_Dependency_Map::load_from_cache,
+				'EE_Session'             => EE_Dependency_Map::load_from_cache,
+			),
+			'EventEspresso\caffeinated\modules\recaptcha_invisible\RecaptchaAdminSettings'                                => array(
+				'EE_Registration_Config' => EE_Dependency_Map::load_from_cache,
+			),
+			'EventEspresso\modules\ticket_selector\ProcessTicketSelector'                                                 => array(
+				'EE_Core_Config'                                                          => EE_Dependency_Map::load_from_cache,
+				'EventEspresso\core\services\request\Request'                             => EE_Dependency_Map::load_from_cache,
+				'EE_Session'                                                              => EE_Dependency_Map::load_from_cache,
+				'EEM_Ticket'                                                              => EE_Dependency_Map::load_from_cache,
+				'EventEspresso\modules\ticket_selector\TicketDatetimeAvailabilityTracker' => EE_Dependency_Map::load_from_cache,
+			),
+			'EventEspresso\modules\ticket_selector\TicketDatetimeAvailabilityTracker'                                     => array(
+				'EEM_Datetime' => EE_Dependency_Map::load_from_cache,
+			),
+			'EventEspresso\core\domain\entities\custom_post_types\CustomPostTypeDefinitions'                              => array(
+				'EE_Core_Config'                             => EE_Dependency_Map::load_from_cache,
+				'EventEspresso\core\services\loaders\Loader' => EE_Dependency_Map::load_from_cache,
+			),
+			'EventEspresso\core\domain\services\custom_post_types\RegisterCustomPostTypes'                                => array(
+				'EventEspresso\core\domain\entities\custom_post_types\CustomPostTypeDefinitions' => EE_Dependency_Map::load_from_cache,
+			),
+			'EventEspresso\core\domain\services\custom_post_types\RegisterCustomTaxonomies'                               => array(
+				'EventEspresso\core\domain\entities\custom_post_types\CustomTaxonomyDefinitions' => EE_Dependency_Map::load_from_cache,
+			),
+			'EE_CPT_Strategy'                                                                                             => array(
+				'EventEspresso\core\domain\entities\custom_post_types\CustomPostTypeDefinitions' => EE_Dependency_Map::load_from_cache,
+				'EventEspresso\core\domain\entities\custom_post_types\CustomTaxonomyDefinitions' => EE_Dependency_Map::load_from_cache,
+			),
+			'EventEspresso\core\services\loaders\ObjectIdentifier'                                                        => array(
+				'EventEspresso\core\services\loaders\ClassInterfaceCache' => EE_Dependency_Map::load_from_cache,
+			),
+			'EventEspresso\core\domain\services\assets\CoreAssetManager'                                                  => array(
+				'EventEspresso\core\services\assets\AssetCollection' => EE_Dependency_Map::load_from_cache,
+				'EE_Currency_Config'                                 => EE_Dependency_Map::load_from_cache,
+				'EE_Template_Config'                                 => EE_Dependency_Map::load_from_cache,
+				'EventEspresso\core\domain\Domain'                   => EE_Dependency_Map::load_from_cache,
+				'EventEspresso\core\services\assets\Registry'        => EE_Dependency_Map::load_from_cache,
+			),
+			'EventEspresso\core\domain\services\admin\privacy\policy\PrivacyPolicy' => array(
+				'EEM_Payment_Method' => EE_Dependency_Map::load_from_cache,
+				'EventEspresso\core\domain\values\session\SessionLifespan' => EE_Dependency_Map::load_from_cache
+			),
+			'EventEspresso\core\domain\services\admin\privacy\export\ExportAttendee' => array(
+				'EEM_Attendee' => EE_Dependency_Map::load_from_cache,
+			),
+			'EventEspresso\core\domain\services\admin\privacy\export\ExportAttendeeBillingData' => array(
+				'EEM_Attendee' => EE_Dependency_Map::load_from_cache,
+				'EEM_Payment_Method' => EE_Dependency_Map::load_from_cache
+			),
+			'EventEspresso\core\domain\services\admin\privacy\export\ExportCheckins' => array(
+				'EEM_Checkin' => EE_Dependency_Map::load_from_cache,
+			),
+			'EventEspresso\core\domain\services\admin\privacy\export\ExportRegistration' => array(
+				'EEM_Registration' => EE_Dependency_Map::load_from_cache,
+			),
+			'EventEspresso\core\domain\services\admin\privacy\export\ExportTransaction' => array(
+				'EEM_Transaction' => EE_Dependency_Map::load_from_cache,
+			),
+			'EventEspresso\core\domain\services\admin\privacy\erasure\EraseAttendeeData' => array(
+				'EEM_Attendee' => EE_Dependency_Map::load_from_cache,
+			),
+			'EventEspresso\core\domain\services\admin\privacy\erasure\EraseAnswers' => array(
+				'EEM_Answer' => EE_Dependency_Map::load_from_cache,
+				'EEM_Question' => EE_Dependency_Map::load_from_cache,
+			),
+			'EventEspresso\core\domain\services\admin\privacy\forms\PrivacySettingsFormHandler' => array(
+				'EE_Registry' => EE_Dependency_Map::load_from_cache,
+				'EE_Config' => EE_Dependency_Map::load_from_cache
+			)
+		);
+	}
+
+
+	/**
+	 * Registers how core classes are loaded.
+	 * This can either be done by simply providing the name of one of the EE_Registry loader methods such as:
+	 *        'EE_Request_Handler' => 'load_core'
+	 *        'EE_Messages_Queue'  => 'load_lib'
+	 *        'EEH_Debug_Tools'    => 'load_helper'
+	 * or, if greater control is required, by providing a custom closure. For example:
+	 *        'Some_Class' => function () {
+	 *            return new Some_Class();
+	 *        },
+	 * This is required for instantiating dependencies
+	 * where an interface has been type hinted in a class constructor. For example:
+	 *        'Required_Interface' => function () {
+	 *            return new A_Class_That_Implements_Required_Interface();
+	 *        },
+	 */
+	protected function _register_core_class_loaders()
+	{
+		// for PHP5.3 compat, we need to register any properties called here in a variable because `$this` cannot
+		// be used in a closure.
+		$request = &$this->request;
+		$response = &$this->response;
+		$legacy_request = &$this->legacy_request;
+		// $loader = &$this->loader;
+		$this->_class_loaders = array(
+			// load_core
+			'EE_Capabilities'                              => 'load_core',
+			'EE_Encryption'                                => 'load_core',
+			'EE_Front_Controller'                          => 'load_core',
+			'EE_Module_Request_Router'                     => 'load_core',
+			'EE_Registry'                                  => 'load_core',
+			'EE_Request'                                   => function () use (&$legacy_request) {
+				return $legacy_request;
+			},
+			'EventEspresso\core\services\request\Request'  => function () use (&$request) {
+				return $request;
+			},
+			'EventEspresso\core\services\request\Response' => function () use (&$response) {
+				return $response;
+			},
+			'EE_Base'                                      => 'load_core',
+			'EE_Request_Handler'                           => 'load_core',
+			'EE_Session'                                   => 'load_core',
+			'EE_Cron_Tasks'                                => 'load_core',
+			'EE_System'                                    => 'load_core',
+			'EE_Maintenance_Mode'                          => 'load_core',
+			'EE_Register_CPTs'                             => 'load_core',
+			'EE_Admin'                                     => 'load_core',
+			'EE_CPT_Strategy'                              => 'load_core',
+			// load_lib
+			'EE_Message_Resource_Manager'                  => 'load_lib',
+			'EE_Message_Type_Collection'                   => 'load_lib',
+			'EE_Message_Type_Collection_Loader'            => 'load_lib',
+			'EE_Messenger_Collection'                      => 'load_lib',
+			'EE_Messenger_Collection_Loader'               => 'load_lib',
+			'EE_Messages_Processor'                        => 'load_lib',
+			'EE_Message_Repository'                        => 'load_lib',
+			'EE_Messages_Queue'                            => 'load_lib',
+			'EE_Messages_Data_Handler_Collection'          => 'load_lib',
+			'EE_Message_Template_Group_Collection'         => 'load_lib',
+			'EE_Payment_Method_Manager'                    => 'load_lib',
+			'EE_Messages_Generator'                        => function () {
+				return EE_Registry::instance()->load_lib(
+					'Messages_Generator',
+					array(),
+					false,
+					false
+				);
+			},
+			'EE_Messages_Template_Defaults'                => function ($arguments = array()) {
+				return EE_Registry::instance()->load_lib(
+					'Messages_Template_Defaults',
+					$arguments,
+					false,
+					false
+				);
+			},
+			// load_helper
+			'EEH_Parse_Shortcodes'                         => function () {
+				if (EE_Registry::instance()->load_helper('Parse_Shortcodes')) {
+					return new EEH_Parse_Shortcodes();
+				}
+				return null;
+			},
+			'EE_Template_Config'                           => function () {
+				return EE_Config::instance()->template_settings;
+			},
+			'EE_Currency_Config'                           => function () {
+				return EE_Config::instance()->currency;
+			},
+			'EE_Registration_Config'                       => function () {
+				return EE_Config::instance()->registration;
+			},
+			'EE_Core_Config'                               => function () {
+				return EE_Config::instance()->core;
+			},
+			'EventEspresso\core\services\loaders\Loader'   => function () {
+				return LoaderFactory::getLoader();
+			},
+			'EE_Network_Config'                            => function () {
+				return EE_Network_Config::instance();
+			},
+			'EE_Config'                                    => function () {
+				return EE_Config::instance();
+			},
+			'EventEspresso\core\domain\Domain'             => function () {
+				return DomainFactory::getEventEspressoCoreDomain();
+			},
+			'EE_Admin_Config'                              => function () {
+				return EE_Config::instance()->admin;
+			}
+		);
+	}
+
+
+	/**
+	 * can be used for supplying alternate names for classes,
+	 * or for connecting interface names to instantiable classes
+	 */
+	protected function _register_core_aliases()
+	{
+		$aliases = array(
+			'CommandBusInterface'                                                          => 'EventEspresso\core\services\commands\CommandBusInterface',
+			'EventEspresso\core\services\commands\CommandBusInterface'                     => 'EventEspresso\core\services\commands\CommandBus',
+			'CommandHandlerManagerInterface'                                               => 'EventEspresso\core\services\commands\CommandHandlerManagerInterface',
+			'EventEspresso\core\services\commands\CommandHandlerManagerInterface'          => 'EventEspresso\core\services\commands\CommandHandlerManager',
+			'CapChecker'                                                                   => 'EventEspresso\core\services\commands\middleware\CapChecker',
+			'AddActionHook'                                                                => 'EventEspresso\core\services\commands\middleware\AddActionHook',
+			'CapabilitiesChecker'                                                          => 'EventEspresso\core\domain\services\capabilities\CapabilitiesChecker',
+			'CapabilitiesCheckerInterface'                                                 => 'EventEspresso\core\domain\services\capabilities\CapabilitiesCheckerInterface',
+			'EventEspresso\core\domain\services\capabilities\CapabilitiesCheckerInterface' => 'EventEspresso\core\domain\services\capabilities\CapabilitiesChecker',
+			'CreateRegistrationService'                                                    => 'EventEspresso\core\domain\services\registration\CreateRegistrationService',
+			'CreateRegistrationCommandHandler'                                             => 'EventEspresso\core\services\commands\registration\CreateRegistrationCommand',
+			'CopyRegistrationDetailsCommandHandler'                                        => 'EventEspresso\core\services\commands\registration\CopyRegistrationDetailsCommand',
+			'CopyRegistrationPaymentsCommandHandler'                                       => 'EventEspresso\core\services\commands\registration\CopyRegistrationPaymentsCommand',
+			'CancelRegistrationAndTicketLineItemCommandHandler'                            => 'EventEspresso\core\services\commands\registration\CancelRegistrationAndTicketLineItemCommandHandler',
+			'UpdateRegistrationAndTransactionAfterChangeCommandHandler'                    => 'EventEspresso\core\services\commands\registration\UpdateRegistrationAndTransactionAfterChangeCommandHandler',
+			'CreateTicketLineItemCommandHandler'                                           => 'EventEspresso\core\services\commands\ticket\CreateTicketLineItemCommand',
+			'CreateTransactionCommandHandler'                                              => 'EventEspresso\core\services\commands\transaction\CreateTransactionCommandHandler',
+			'CreateAttendeeCommandHandler'                                                 => 'EventEspresso\core\services\commands\attendee\CreateAttendeeCommandHandler',
+			'TableManager'                                                                 => 'EventEspresso\core\services\database\TableManager',
+			'TableAnalysis'                                                                => 'EventEspresso\core\services\database\TableAnalysis',
+			'EspressoShortcode'                                                            => 'EventEspresso\core\services\shortcodes\EspressoShortcode',
+			'ShortcodeInterface'                                                           => 'EventEspresso\core\services\shortcodes\ShortcodeInterface',
+			'EventEspresso\core\services\shortcodes\ShortcodeInterface'                    => 'EventEspresso\core\services\shortcodes\EspressoShortcode',
+			'EventEspresso\core\services\cache\CacheStorageInterface'                      => 'EventEspresso\core\services\cache\TransientCacheStorage',
+			'LoaderInterface'                                                              => 'EventEspresso\core\services\loaders\LoaderInterface',
+			'EventEspresso\core\services\loaders\LoaderInterface'                          => 'EventEspresso\core\services\loaders\Loader',
+			'CommandFactoryInterface'                                                      => 'EventEspresso\core\services\commands\CommandFactoryInterface',
+			'EventEspresso\core\services\commands\CommandFactoryInterface'                 => 'EventEspresso\core\services\commands\CommandFactory',
+			'EventEspresso\core\domain\services\session\SessionIdentifierInterface'        => 'EE_Session',
+			'EmailValidatorInterface'                                                      => 'EventEspresso\core\domain\services\validation\email\EmailValidatorInterface',
+			'EventEspresso\core\domain\services\validation\email\EmailValidatorInterface'  => 'EventEspresso\core\domain\services\validation\email\EmailValidationService',
+			'NoticeConverterInterface'                                                     => 'EventEspresso\core\services\notices\NoticeConverterInterface',
+			'EventEspresso\core\services\notices\NoticeConverterInterface'                 => 'EventEspresso\core\services\notices\ConvertNoticesToEeErrors',
+			'NoticesContainerInterface'                                                    => 'EventEspresso\core\services\notices\NoticesContainerInterface',
+			'EventEspresso\core\services\notices\NoticesContainerInterface'                => 'EventEspresso\core\services\notices\NoticesContainer',
+			'EventEspresso\core\services\request\RequestInterface'                         => 'EventEspresso\core\services\request\Request',
+			'EventEspresso\core\services\request\ResponseInterface'                        => 'EventEspresso\core\services\request\Response',
+			'EventEspresso\core\domain\DomainInterface'                                    => 'EventEspresso\core\domain\Domain',
+		);
+		foreach ($aliases as $alias => $fqn) {
+			if (is_array($fqn)) {
+				foreach ($fqn as $class => $for_class) {
+					$this->class_cache->addAlias($class, $alias, $for_class);
+				}
+				continue;
+			}
+			$this->class_cache->addAlias($fqn, $alias);
+		}
+		if (! (defined('DOING_AJAX') && DOING_AJAX) && is_admin()) {
+			$this->class_cache->addAlias(
+				'EventEspresso\core\services\notices\ConvertNoticesToAdminNotices',
+				'EventEspresso\core\services\notices\NoticeConverterInterface'
+			);
+		}
+	}
+
+
+	/**
+	 * This is used to reset the internal map and class_loaders to their original default state at the beginning of the
+	 * request Primarily used by unit tests.
+	 */
+	public function reset()
+	{
+		$this->_register_core_class_loaders();
+		$this->_register_core_dependencies();
+	}
+
+
+	/**
+	 * PLZ NOTE: a better name for this method would be is_alias()
+	 * because it returns TRUE if the provided fully qualified name IS an alias
+	 * WHY?
+	 * Because if a class is type hinting for a concretion,
+	 * then why would we need to find another class to supply it?
+	 * ie: if a class asks for `Fully/Qualified/Namespace/SpecificClassName`,
+	 * then give it an instance of `Fully/Qualified/Namespace/SpecificClassName`.
+	 * Don't go looking for some substitute.
+	 * Whereas if a class is type hinting for an interface...
+	 * then we need to find an actual class to use.
+	 * So the interface IS the alias for some other FQN,
+	 * and we need to find out if `Fully/Qualified/Namespace/SomeInterface`
+	 * represents some other class.
+	 *
+	 * @deprecated 4.9.62.p
+	 * @param string $fqn
+	 * @param string $for_class
+	 * @return bool
+	 */
+	public function has_alias($fqn = '', $for_class = '')
+	{
+		return $this->isAlias($fqn, $for_class);
+	}
+
+
+	/**
+	 * PLZ NOTE: a better name for this method would be get_fqn_for_alias()
+	 * because it returns a FQN for provided alias if one exists, otherwise returns the original $alias
+	 * functions recursively, so that multiple aliases can be used to drill down to a FQN
+	 *  for example:
+	 *      if the following two entries were added to the _aliases array:
+	 *          array(
+	 *              'interface_alias'           => 'some\namespace\interface'
+	 *              'some\namespace\interface'  => 'some\namespace\classname'
+	 *          )
+	 *      then one could use EE_Registry::instance()->create( 'interface_alias' )
+	 *      to load an instance of 'some\namespace\classname'
+	 *
+	 * @deprecated 4.9.62.p
+	 * @param string $alias
+	 * @param string $for_class
+	 * @return string
+	 */
+	public function get_alias($alias = '', $for_class = '')
+	{
+		return $this->getFqnForAlias($alias, $for_class);
+	}
 }

core/libraries/plugin_api/EE_Register_CPT.lib.php

Indentation +230 added lines, -230 removed lines

@@ -13,257 +13,257 @@
 class EE_Register_CPT implements EEI_Plugin_API
 {
 
-    /**
-     * Holds values for registered variations
-     *
-     * @since 4.5.0
-     *
-     * @var array[][][]
-     */
-    protected static $_registry = array();
+	/**
+	 * Holds values for registered variations
+	 *
+	 * @since 4.5.0
+	 *
+	 * @var array[][][]
+	 */
+	protected static $_registry = array();
 
 
-    /**
-     * Used to register new CPTs and Taxonomies.
-     *
-     * @param string $cpt_ref                 reference used for the addon registering cpts and cts
-     * @param array  $setup_args              {
-     *                                        An array of required values for registering the cpts and taxonomies
-     * @type array   $cpts                    {
-     *                                        An array of cpts and their arguments.(short example below)
-     * @see CustomPostTypeDefinitions::setDefinitions for a more complete example.
-     *                                        'people' => array(
-     *                                        'singular_name' => __('People', 'event_espresso'),
-     *                                        'plural_name' => __('People', 'event_espresso'),
-     *                                        'singular_slug' => __('people', 'event_espresso'),
-     *                                        'plural_slug' => __('peoples', 'event_espresso'),
-     *                                        'class_name' => 'EE_People'
-     *                                        )
-     *                                        },
-     * @type array   $cts                     {
-     *                                        An array of custom taxonomies and their arguments (short example below).
-     * @see CustomTaxonomyDefinitions::setTaxonomies() for a more complete example.
-     *                                        'espresso_people_type' => array(
-     *                                        'singular_name' => __('People Type', 'event_espresso'),
-     *                                        'plural_name' => __('People Types', 'event_espresso'),
-     *                                        'args' => array()
-     *                                        )
-     *                                        },
-     * @type array   $default_terms           {
-     *                                        An array of terms to set as the default for a given taxonomy and the
-     *                                        custom post types applied to.
-     *                                        'taxonomy_name' => array(
-     *                                        'term' => array( 'cpt_a_name', 'cpt_b_name' )
-     *                                        )
-     *                                        }
-     *                                        }
-     * @throws  EE_Error
-     * @return void
-     */
-    public static function register($cpt_ref = null, $setup_args = array())
-    {
+	/**
+	 * Used to register new CPTs and Taxonomies.
+	 *
+	 * @param string $cpt_ref                 reference used for the addon registering cpts and cts
+	 * @param array  $setup_args              {
+	 *                                        An array of required values for registering the cpts and taxonomies
+	 * @type array   $cpts                    {
+	 *                                        An array of cpts and their arguments.(short example below)
+	 * @see CustomPostTypeDefinitions::setDefinitions for a more complete example.
+	 *                                        'people' => array(
+	 *                                        'singular_name' => __('People', 'event_espresso'),
+	 *                                        'plural_name' => __('People', 'event_espresso'),
+	 *                                        'singular_slug' => __('people', 'event_espresso'),
+	 *                                        'plural_slug' => __('peoples', 'event_espresso'),
+	 *                                        'class_name' => 'EE_People'
+	 *                                        )
+	 *                                        },
+	 * @type array   $cts                     {
+	 *                                        An array of custom taxonomies and their arguments (short example below).
+	 * @see CustomTaxonomyDefinitions::setTaxonomies() for a more complete example.
+	 *                                        'espresso_people_type' => array(
+	 *                                        'singular_name' => __('People Type', 'event_espresso'),
+	 *                                        'plural_name' => __('People Types', 'event_espresso'),
+	 *                                        'args' => array()
+	 *                                        )
+	 *                                        },
+	 * @type array   $default_terms           {
+	 *                                        An array of terms to set as the default for a given taxonomy and the
+	 *                                        custom post types applied to.
+	 *                                        'taxonomy_name' => array(
+	 *                                        'term' => array( 'cpt_a_name', 'cpt_b_name' )
+	 *                                        )
+	 *                                        }
+	 *                                        }
+	 * @throws  EE_Error
+	 * @return void
+	 */
+	public static function register($cpt_ref = null, $setup_args = array())
+	{
 
-        // check for required params
-        if (empty($cpt_ref)) {
-            throw new EE_Error(
-                __(
-                    'In order to register custom post types and custom taxonomies, you must include a value to reference what had been registered',
-                    'event_espresso'
-                )
-            );
-        }
+		// check for required params
+		if (empty($cpt_ref)) {
+			throw new EE_Error(
+				__(
+					'In order to register custom post types and custom taxonomies, you must include a value to reference what had been registered',
+					'event_espresso'
+				)
+			);
+		}
 
-        if (! is_array($setup_args) || (empty($setup_args['cpts']) && empty($setup_args['cts']))) {
-            throw new EE_Error(
-                __(
-                    'In order to register custom post types or custom taxonomies, you must include an array containing either an array of custom post types to register (key "cpts"), an array of custom taxonomies ("cts") or both.',
-                    'event_espresso'
-                )
-            );
-        }
+		if (! is_array($setup_args) || (empty($setup_args['cpts']) && empty($setup_args['cts']))) {
+			throw new EE_Error(
+				__(
+					'In order to register custom post types or custom taxonomies, you must include an array containing either an array of custom post types to register (key "cpts"), an array of custom taxonomies ("cts") or both.',
+					'event_espresso'
+				)
+			);
+		}
 
-        // make sure we don't register twice
-        if (isset(self::$_registry[ $cpt_ref ])) {
-            return;
-        }
+		// make sure we don't register twice
+		if (isset(self::$_registry[ $cpt_ref ])) {
+			return;
+		}
 
-        // make sure cpt ref is unique.
-        if (isset(self::$_registry[ $cpt_ref ])) {
-            $cpt_ref = uniqid() . '_' . $cpt_ref;
-        }
+		// make sure cpt ref is unique.
+		if (isset(self::$_registry[ $cpt_ref ])) {
+			$cpt_ref = uniqid() . '_' . $cpt_ref;
+		}
 
-        // make sure this was called in the right place!
-        if (did_action('AHEE__EE_System__load_CPTs_and_session__complete')) {
-            EE_Error::doing_it_wrong(
-                __METHOD__,
-                sprintf(
-                    __(
-                        'EE_Register_CPT has been called and given a reference of "%s".  It may or may not work because it should be called on or before "AHEE__EE_System__load_CPTs_and_session__complete" action hook.',
-                        'event_espresso'
-                    ),
-                    $cpt_ref
-                ),
-                '4.5.0'
-            );
-        }
-        // validate incoming args
-        $validated = array(
-            'cpts'          => isset($setup_args['cpts'])
-                ? (array) $setup_args['cpts']
-                : array(),
-            'cts'           => isset($setup_args['cts'])
-                ? (array) $setup_args['cts']
-                : array(),
-            'default_terms' => isset($setup_args['default_terms'])
-                ? (array) $setup_args['default_terms']
-                : array(),
-        );
+		// make sure this was called in the right place!
+		if (did_action('AHEE__EE_System__load_CPTs_and_session__complete')) {
+			EE_Error::doing_it_wrong(
+				__METHOD__,
+				sprintf(
+					__(
+						'EE_Register_CPT has been called and given a reference of "%s".  It may or may not work because it should be called on or before "AHEE__EE_System__load_CPTs_and_session__complete" action hook.',
+						'event_espresso'
+					),
+					$cpt_ref
+				),
+				'4.5.0'
+			);
+		}
+		// validate incoming args
+		$validated = array(
+			'cpts'          => isset($setup_args['cpts'])
+				? (array) $setup_args['cpts']
+				: array(),
+			'cts'           => isset($setup_args['cts'])
+				? (array) $setup_args['cts']
+				: array(),
+			'default_terms' => isset($setup_args['default_terms'])
+				? (array) $setup_args['default_terms']
+				: array(),
+		);
 
-        self::$_registry[ $cpt_ref ] = $validated;
+		self::$_registry[ $cpt_ref ] = $validated;
 
-        // hook into to cpt system
-        add_filter(
-            'FHEE__EventEspresso_core_domain_entities_custom_post_types_CustomPostTypeDefinitions__getCustomPostTypes',
-            array(__CLASS__, 'filterCustomPostTypeDefinitions'),
-            5
-        );
-        add_filter(
-            'FHEE__EventEspresso_core_domain_entities_custom_post_types_TaxonomyDefinitions__getTaxonomies',
-            array(__CLASS__, 'filterCustomTaxonomyDefinitions'),
-            5
-        );
-        add_action(
-            'AHEE__EventEspresso_core_domain_services_custom_post_types_RegisterCustomTaxonomyTerms__construct_end',
-            array(__CLASS__, 'registerCustomTaxonomyTerm'),
-            5
-        );
-    }
+		// hook into to cpt system
+		add_filter(
+			'FHEE__EventEspresso_core_domain_entities_custom_post_types_CustomPostTypeDefinitions__getCustomPostTypes',
+			array(__CLASS__, 'filterCustomPostTypeDefinitions'),
+			5
+		);
+		add_filter(
+			'FHEE__EventEspresso_core_domain_entities_custom_post_types_TaxonomyDefinitions__getTaxonomies',
+			array(__CLASS__, 'filterCustomTaxonomyDefinitions'),
+			5
+		);
+		add_action(
+			'AHEE__EventEspresso_core_domain_services_custom_post_types_RegisterCustomTaxonomyTerms__construct_end',
+			array(__CLASS__, 'registerCustomTaxonomyTerm'),
+			5
+		);
+	}
 
 
-    /**
-     * Callback for
-     * FHEE__EventEspresso_core_domain_entities_custom_post_types_CustomPostTypeDefinitions__getCustomPostTypes
-     * that adds additional custom post types to be registered.
-     *
-     * @param array $custom_post_type_definitions array of cpts that are already set
-     * @return array new array of cpts and their registration information
-     */
-    public static function filterCustomPostTypeDefinitions($custom_post_type_definitions)
-    {
-        foreach (self::$_registry as $registries) {
-            foreach ($registries['cpts'] as $cpt_name => $cpt_settings) {
-                $custom_post_type_definitions[ $cpt_name ] = $cpt_settings;
-            }
-        }
-        return $custom_post_type_definitions;
-    }
+	/**
+	 * Callback for
+	 * FHEE__EventEspresso_core_domain_entities_custom_post_types_CustomPostTypeDefinitions__getCustomPostTypes
+	 * that adds additional custom post types to be registered.
+	 *
+	 * @param array $custom_post_type_definitions array of cpts that are already set
+	 * @return array new array of cpts and their registration information
+	 */
+	public static function filterCustomPostTypeDefinitions($custom_post_type_definitions)
+	{
+		foreach (self::$_registry as $registries) {
+			foreach ($registries['cpts'] as $cpt_name => $cpt_settings) {
+				$custom_post_type_definitions[ $cpt_name ] = $cpt_settings;
+			}
+		}
+		return $custom_post_type_definitions;
+	}
 
 
-    /**
-     * Callback for
-     * FHEE__EventEspresso_core_domain_entities_custom_post_types_TaxonomyDefinitions__getTaxonomies
-     * that adds additional custom taxonomies to be registered.
-     *
-     * @param array $custom_taxonomy_definitions array of cts that are already set.
-     * @return array new array of cts and their registration information.
-     */
-    public static function filterCustomTaxonomyDefinitions($custom_taxonomy_definitions)
-    {
-        foreach (self::$_registry as $registries) {
-            foreach ($registries['cts'] as $ct_name => $ct_settings) {
-                $custom_taxonomy_definitions[ $ct_name ] = $ct_settings;
-            }
-        }
-        return $custom_taxonomy_definitions;
-    }
+	/**
+	 * Callback for
+	 * FHEE__EventEspresso_core_domain_entities_custom_post_types_TaxonomyDefinitions__getTaxonomies
+	 * that adds additional custom taxonomies to be registered.
+	 *
+	 * @param array $custom_taxonomy_definitions array of cts that are already set.
+	 * @return array new array of cts and their registration information.
+	 */
+	public static function filterCustomTaxonomyDefinitions($custom_taxonomy_definitions)
+	{
+		foreach (self::$_registry as $registries) {
+			foreach ($registries['cts'] as $ct_name => $ct_settings) {
+				$custom_taxonomy_definitions[ $ct_name ] = $ct_settings;
+			}
+		}
+		return $custom_taxonomy_definitions;
+	}
 
 
-    /**
-     * Callback for
-     * AHEE__EventEspresso_core_domain_services_custom_post_types_RegisterCustomTaxonomyTerms__construct_end
-     * which is used to set the default terms
-     *
-     * @param RegisterCustomTaxonomyTerms $register_custom_taxonomy_terms
-     * @return void
-     */
-    public static function registerCustomTaxonomyTerm(RegisterCustomTaxonomyTerms $register_custom_taxonomy_terms)
-    {
-        foreach (self::$_registry as $registries) {
-            foreach ($registries['default_terms'] as $taxonomy => $terms) {
-                foreach ($terms as $term => $cpts) {
-                    $register_custom_taxonomy_terms->registerCustomTaxonomyTerm(
-                        $taxonomy,
-                        $term,
-                        $cpts
-                    );
-                }
-            }
-        }
-    }
+	/**
+	 * Callback for
+	 * AHEE__EventEspresso_core_domain_services_custom_post_types_RegisterCustomTaxonomyTerms__construct_end
+	 * which is used to set the default terms
+	 *
+	 * @param RegisterCustomTaxonomyTerms $register_custom_taxonomy_terms
+	 * @return void
+	 */
+	public static function registerCustomTaxonomyTerm(RegisterCustomTaxonomyTerms $register_custom_taxonomy_terms)
+	{
+		foreach (self::$_registry as $registries) {
+			foreach ($registries['default_terms'] as $taxonomy => $terms) {
+				foreach ($terms as $term => $cpts) {
+					$register_custom_taxonomy_terms->registerCustomTaxonomyTerm(
+						$taxonomy,
+						$term,
+						$cpts
+					);
+				}
+			}
+		}
+	}
 
 
-    /**
-     * @deprecated 4.9.62.p
-     * @param array $cpts array of cpts that are already set
-     * @return array new array of cpts and their registration information
-     */
-    public static function filter_cpts($cpts)
-    {
-        foreach (self::$_registry as $registries) {
-            foreach ($registries['cpts'] as $cpt_name => $cpt_settings) {
-                $cpts[ $cpt_name ] = $cpt_settings;
-            }
-        }
-        return $cpts;
-    }
+	/**
+	 * @deprecated 4.9.62.p
+	 * @param array $cpts array of cpts that are already set
+	 * @return array new array of cpts and their registration information
+	 */
+	public static function filter_cpts($cpts)
+	{
+		foreach (self::$_registry as $registries) {
+			foreach ($registries['cpts'] as $cpt_name => $cpt_settings) {
+				$cpts[ $cpt_name ] = $cpt_settings;
+			}
+		}
+		return $cpts;
+	}
 
 
-    /**
-     * @deprecated 4.9.62.p
-     * @param array $cts array of cts that are already set.
-     * @return array new array of cts and their registration information.
-     */
-    public static function filter_cts($cts)
-    {
-        foreach (self::$_registry as $registries) {
-            foreach ($registries['cts'] as $ct_name => $ct_settings) {
-                $cts[ $ct_name ] = $ct_settings;
-            }
-        }
-        return $cts;
-    }
+	/**
+	 * @deprecated 4.9.62.p
+	 * @param array $cts array of cts that are already set.
+	 * @return array new array of cts and their registration information.
+	 */
+	public static function filter_cts($cts)
+	{
+		foreach (self::$_registry as $registries) {
+			foreach ($registries['cts'] as $ct_name => $ct_settings) {
+				$cts[ $ct_name ] = $ct_settings;
+			}
+		}
+		return $cts;
+	}
 
 
-    /**
-     * @deprecated 4.9.62.p
-     * @param EE_Register_CPTs $cpt_class
-     * @return void
-     */
-    public static function default_terms(EE_Register_CPTs $cpt_class)
-    {
-        foreach (self::$_registry as $registries) {
-            foreach ($registries['default_terms'] as $taxonomy => $terms) {
-                foreach ($terms as $term => $cpts) {
-                    $cpt_class->set_default_term($taxonomy, $term, $cpts);
-                }
-            }
-        }
-    }
+	/**
+	 * @deprecated 4.9.62.p
+	 * @param EE_Register_CPTs $cpt_class
+	 * @return void
+	 */
+	public static function default_terms(EE_Register_CPTs $cpt_class)
+	{
+		foreach (self::$_registry as $registries) {
+			foreach ($registries['default_terms'] as $taxonomy => $terms) {
+				foreach ($terms as $term => $cpts) {
+					$cpt_class->set_default_term($taxonomy, $term, $cpts);
+				}
+			}
+		}
+	}
 
 
-    /**
-     * This deregisters whats been registered on this class (for the given slug).
-     *
-     * @since 4.5.0
-     *
-     * @param string $cpt_ref The reference for the item registered to be removed.
-     *
-     * @return void
-     */
-    public static function deregister($cpt_ref = null)
-    {
-        if (! empty(self::$_registry[ $cpt_ref ])) {
-            unset(self::$_registry[ $cpt_ref ]);
-        }
-    }
+	/**
+	 * This deregisters whats been registered on this class (for the given slug).
+	 *
+	 * @since 4.5.0
+	 *
+	 * @param string $cpt_ref The reference for the item registered to be removed.
+	 *
+	 * @return void
+	 */
+	public static function deregister($cpt_ref = null)
+	{
+		if (! empty(self::$_registry[ $cpt_ref ])) {
+			unset(self::$_registry[ $cpt_ref ]);
+		}
+	}
 }

core/EE_Registry.core.php

Indentation +1660 added lines, -1660 removed lines

@@ -23,1664 +23,1664 @@
 class EE_Registry implements ResettableInterface
 {
 
-    /**
-     * @var EE_Registry $_instance
-     */
-    private static $_instance;
-
-    /**
-     * @var EE_Dependency_Map $_dependency_map
-     */
-    protected $_dependency_map;
-
-    /**
-     * @var Mirror
-     */
-    private $mirror;
-
-    /**
-     * @var ClassInterfaceCache $class_cache
-     */
-    private $class_cache;
-
-    /**
-     * @var array $_class_abbreviations
-     */
-    protected $_class_abbreviations = array();
-
-    /**
-     * @var CommandBusInterface $BUS
-     */
-    public $BUS;
-
-    /**
-     * @var EE_Cart $CART
-     */
-    public $CART;
-
-    /**
-     * @var EE_Config $CFG
-     */
-    public $CFG;
-
-    /**
-     * @var EE_Network_Config $NET_CFG
-     */
-    public $NET_CFG;
-
-    /**
-     * StdClass object for storing library classes in
-     *
-     * @var RegistryContainer $LIB
-     */
-    public $LIB;
-
-    /**
-     * @var EE_Request_Handler $REQ
-     */
-    public $REQ;
-
-    /**
-     * @var EE_Session $SSN
-     */
-    public $SSN;
-
-    /**
-     * @since 4.5.0
-     * @var EE_Capabilities $CAP
-     */
-    public $CAP;
-
-    /**
-     * @since 4.9.0
-     * @var EE_Message_Resource_Manager $MRM
-     */
-    public $MRM;
-
-    /**
-     * @var Registry $AssetsRegistry
-     */
-    public $AssetsRegistry;
-
-    /**
-     * StdClass object for holding addons which have registered themselves to work with EE core
-     *
-     * @var EE_Addon[] $addons
-     */
-    public $addons;
-
-    /**
-     * keys are 'short names' (eg Event), values are class names (eg 'EEM_Event')
-     *
-     * @var EEM_Base[] $models
-     */
-    public $models = array();
-
-    /**
-     * @var EED_Module[] $modules
-     */
-    public $modules;
-
-    /**
-     * @var EES_Shortcode[] $shortcodes
-     */
-    public $shortcodes;
-
-    /**
-     * @var WP_Widget[] $widgets
-     */
-    public $widgets;
-
-    /**
-     * this is an array of all implemented model names (i.e. not the parent abstract models, or models
-     * which don't actually fetch items from the DB in the normal way (ie, are not children of EEM_Base)).
-     * Keys are model "short names" (eg "Event") as used in model relations, and values are
-     * classnames (eg "EEM_Event")
-     *
-     * @var array $non_abstract_db_models
-     */
-    public $non_abstract_db_models = array();
-
-    /**
-     * internationalization for JS strings
-     *    usage:   EE_Registry::i18n_js_strings['string_key'] = esc_html__( 'string to translate.', 'event_espresso' );
-     *    in js file:  var translatedString = eei18n.string_key;
-     *
-     * @var array $i18n_js_strings
-     */
-    public static $i18n_js_strings = array();
-
-    /**
-     * $main_file - path to espresso.php
-     *
-     * @var array $main_file
-     */
-    public $main_file;
-
-    /**
-     * array of ReflectionClass objects where the key is the class name
-     *
-     * @deprecated 4.9.62.p
-     * @var ReflectionClass[] $_reflectors
-     */
-    public $_reflectors;
-
-    /**
-     * boolean flag to indicate whether or not to load/save dependencies from/to the cache
-     *
-     * @var boolean $_cache_on
-     */
-    protected $_cache_on = true;
-
-    /**
-     * @var ObjectIdentifier
-     */
-    private $object_identifier;
-
-
-    /**
-     * @singleton method used to instantiate class object
-     * @param EE_Dependency_Map|null   $dependency_map
-     * @param Mirror|null              $mirror
-     * @param ClassInterfaceCache|null $class_cache
-     * @param ObjectIdentifier|null    $object_identifier
-     * @return EE_Registry instance
-     */
-    public static function instance(
-        EE_Dependency_Map $dependency_map = null,
-        Mirror $mirror = null,
-        ClassInterfaceCache $class_cache = null,
-        ObjectIdentifier $object_identifier = null
-    ) {
-        // check if class object is instantiated
-        if (! self::$_instance instanceof EE_Registry
-            && $dependency_map instanceof EE_Dependency_Map
-            && $mirror instanceof Mirror
-            && $class_cache instanceof ClassInterfaceCache
-            && $object_identifier instanceof ObjectIdentifier
-        ) {
-            self::$_instance = new self(
-                $dependency_map,
-                $mirror,
-                $class_cache,
-                $object_identifier
-            );
-        }
-        return self::$_instance;
-    }
-
-
-    /**
-     * protected constructor to prevent direct creation
-     *
-     * @Constructor
-     * @param  EE_Dependency_Map  $dependency_map
-     * @param Mirror              $mirror
-     * @param ClassInterfaceCache $class_cache
-     * @param ObjectIdentifier    $object_identifier
-     */
-    protected function __construct(
-        EE_Dependency_Map $dependency_map,
-        Mirror $mirror,
-        ClassInterfaceCache $class_cache,
-        ObjectIdentifier $object_identifier
-    ) {
-        $this->_dependency_map = $dependency_map;
-        $this->mirror = $mirror;
-        $this->class_cache = $class_cache;
-        $this->object_identifier = $object_identifier;
-        // $registry_container = new RegistryContainer();
-        $this->LIB = new RegistryContainer();
-        $this->addons = new RegistryContainer();
-        $this->modules = new RegistryContainer();
-        $this->shortcodes = new RegistryContainer();
-        $this->widgets = new RegistryContainer();
-        add_action('EE_Load_Espresso_Core__handle_request__initialize_core_loading', array($this, 'initialize'));
-    }
-
-
-    /**
-     * initialize
-     *
-     * @throws OutOfBoundsException
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     * @throws ReflectionException
-     */
-    public function initialize()
-    {
-        $this->_class_abbreviations = apply_filters(
-            'FHEE__EE_Registry____construct___class_abbreviations',
-            array(
-                'EE_Config'                                       => 'CFG',
-                'EE_Session'                                      => 'SSN',
-                'EE_Capabilities'                                 => 'CAP',
-                'EE_Cart'                                         => 'CART',
-                'EE_Network_Config'                               => 'NET_CFG',
-                'EE_Request_Handler'                              => 'REQ',
-                'EE_Message_Resource_Manager'                     => 'MRM',
-                'EventEspresso\core\services\commands\CommandBus' => 'BUS',
-                'EventEspresso\core\services\assets\Registry'     => 'AssetsRegistry',
-            )
-        );
-        $this->load_core('Base', array(), true);
-        // add our request and response objects to the cache
-        $request_loader = $this->_dependency_map->class_loader(
-            'EventEspresso\core\services\request\Request'
-        );
-        $this->_set_cached_class(
-            $request_loader(),
-            'EventEspresso\core\services\request\Request'
-        );
-        $response_loader = $this->_dependency_map->class_loader(
-            'EventEspresso\core\services\request\Response'
-        );
-        $this->_set_cached_class(
-            $response_loader(),
-            'EventEspresso\core\services\request\Response'
-        );
-        add_action('AHEE__EE_System__set_hooks_for_core', array($this, 'init'));
-    }
-
-
-    /**
-     * @return void
-     */
-    public function init()
-    {
-        // Get current page protocol
-        $protocol = isset($_SERVER['HTTPS']) ? 'https://' : 'http://';
-        // Output admin-ajax.php URL with same protocol as current page
-        self::$i18n_js_strings['ajax_url'] = admin_url('admin-ajax.php', $protocol);
-        self::$i18n_js_strings['wp_debug'] = defined('WP_DEBUG') ? WP_DEBUG : false;
-    }
-
-
-    /**
-     * localize_i18n_js_strings
-     *
-     * @return string
-     */
-    public static function localize_i18n_js_strings()
-    {
-        $i18n_js_strings = (array) self::$i18n_js_strings;
-        foreach ($i18n_js_strings as $key => $value) {
-            if (is_scalar($value)) {
-                $i18n_js_strings[ $key ] = html_entity_decode((string) $value, ENT_QUOTES, 'UTF-8');
-            }
-        }
-        return '/* <![CDATA[ */ var eei18n = ' . wp_json_encode($i18n_js_strings) . '; /* ]]> */';
-    }
-
-
-    /**
-     * @param mixed string | EED_Module $module
-     * @throws OutOfBoundsException
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     * @throws ReflectionException
-     */
-    public function add_module($module)
-    {
-        if ($module instanceof EED_Module) {
-            $module_class = get_class($module);
-            $this->modules->{$module_class} = $module;
-        } else {
-            if (! class_exists('EE_Module_Request_Router', false)) {
-                $this->load_core('Module_Request_Router');
-            }
-            EE_Module_Request_Router::module_factory($module);
-        }
-    }
-
-
-    /**
-     * @param string $module_name
-     * @return mixed EED_Module | NULL
-     */
-    public function get_module($module_name = '')
-    {
-        return isset($this->modules->{$module_name})
-            ? $this->modules->{$module_name}
-            : null;
-    }
-
-
-    /**
-     * loads core classes - must be singletons
-     *
-     * @param string $class_name - simple class name ie: session
-     * @param mixed  $arguments
-     * @param bool   $load_only
-     * @return mixed
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     * @throws ReflectionException
-     * @throws InvalidArgumentException
-     */
-    public function load_core($class_name, $arguments = array(), $load_only = false)
-    {
-        $core_paths = apply_filters(
-            'FHEE__EE_Registry__load_core__core_paths',
-            array(
-                EE_CORE,
-                EE_ADMIN,
-                EE_CPTS,
-                EE_CORE . 'data_migration_scripts' . DS,
-                EE_CORE . 'capabilities' . DS,
-                EE_CORE . 'request_stack' . DS,
-                EE_CORE . 'middleware' . DS,
-            )
-        );
-        // retrieve instantiated class
-        return $this->_load(
-            $core_paths,
-            'EE_',
-            $class_name,
-            'core',
-            $arguments,
-            false,
-            true,
-            $load_only
-        );
-    }
-
-
-    /**
-     * loads service classes
-     *
-     * @param string $class_name - simple class name ie: session
-     * @param mixed  $arguments
-     * @param bool   $load_only
-     * @return mixed
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     * @throws ReflectionException
-     * @throws InvalidArgumentException
-     */
-    public function load_service($class_name, $arguments = array(), $load_only = false)
-    {
-        $service_paths = apply_filters(
-            'FHEE__EE_Registry__load_service__service_paths',
-            array(
-                EE_CORE . 'services' . DS,
-            )
-        );
-        // retrieve instantiated class
-        return $this->_load(
-            $service_paths,
-            'EE_',
-            $class_name,
-            'class',
-            $arguments,
-            false,
-            true,
-            $load_only
-        );
-    }
-
-
-    /**
-     * loads data_migration_scripts
-     *
-     * @param string $class_name - class name for the DMS ie: EE_DMS_Core_4_2_0
-     * @param mixed  $arguments
-     * @return EE_Data_Migration_Script_Base|mixed
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     * @throws ReflectionException
-     * @throws InvalidArgumentException
-     */
-    public function load_dms($class_name, $arguments = array())
-    {
-        // retrieve instantiated class
-        return $this->_load(
-            EE_Data_Migration_Manager::instance()->get_data_migration_script_folders(),
-            'EE_DMS_',
-            $class_name,
-            'dms',
-            $arguments,
-            false,
-            false
-        );
-    }
-
-
-    /**
-     * loads object creating classes - must be singletons
-     *
-     * @param string $class_name - simple class name ie: attendee
-     * @param mixed  $arguments  - an array of arguments to pass to the class
-     * @param bool   $from_db    - some classes are instantiated from the db and thus call a different method to
-     *                           instantiate
-     * @param bool   $cache      if you don't want the class to be stored in the internal cache (non-persistent) then
-     *                           set this to FALSE (ie. when instantiating model objects from client in a loop)
-     * @param bool   $load_only  whether or not to just load the file and NOT instantiate, or load AND instantiate
-     *                           (default)
-     * @return EE_Base_Class | bool
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     * @throws ReflectionException
-     * @throws InvalidArgumentException
-     */
-    public function load_class($class_name, $arguments = array(), $from_db = false, $cache = true, $load_only = false)
-    {
-        $paths = apply_filters(
-            'FHEE__EE_Registry__load_class__paths',
-            array(
-                EE_CORE,
-                EE_CLASSES,
-                EE_BUSINESS,
-            )
-        );
-        // retrieve instantiated class
-        return $this->_load(
-            $paths,
-            'EE_',
-            $class_name,
-            'class',
-            $arguments,
-            $from_db,
-            $cache,
-            $load_only
-        );
-    }
-
-
-    /**
-     * loads helper classes - must be singletons
-     *
-     * @param string $class_name - simple class name ie: price
-     * @param mixed  $arguments
-     * @param bool   $load_only
-     * @return EEH_Base | bool
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     * @throws ReflectionException
-     * @throws InvalidArgumentException
-     */
-    public function load_helper($class_name, $arguments = array(), $load_only = true)
-    {
-        // todo: add doing_it_wrong() in a few versions after all addons have had calls to this method removed
-        $helper_paths = apply_filters('FHEE__EE_Registry__load_helper__helper_paths', array(EE_HELPERS));
-        // retrieve instantiated class
-        return $this->_load(
-            $helper_paths,
-            'EEH_',
-            $class_name,
-            'helper',
-            $arguments,
-            false,
-            true,
-            $load_only
-        );
-    }
-
-
-    /**
-     * loads core classes - must be singletons
-     *
-     * @param string $class_name - simple class name ie: session
-     * @param mixed  $arguments
-     * @param bool   $load_only
-     * @param bool   $cache      whether to cache the object or not.
-     * @return mixed
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     * @throws ReflectionException
-     * @throws InvalidArgumentException
-     */
-    public function load_lib($class_name, $arguments = array(), $load_only = false, $cache = true)
-    {
-        $paths = array(
-            EE_LIBRARIES,
-            EE_LIBRARIES . 'messages' . DS,
-            EE_LIBRARIES . 'shortcodes' . DS,
-            EE_LIBRARIES . 'qtips' . DS,
-            EE_LIBRARIES . 'payment_methods' . DS,
-        );
-        // retrieve instantiated class
-        return $this->_load(
-            $paths,
-            'EE_',
-            $class_name,
-            'lib',
-            $arguments,
-            false,
-            $cache,
-            $load_only
-        );
-    }
-
-
-    /**
-     * loads model classes - must be singletons
-     *
-     * @param string $class_name - simple class name ie: price
-     * @param mixed  $arguments
-     * @param bool   $load_only
-     * @return EEM_Base | bool
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     * @throws ReflectionException
-     * @throws InvalidArgumentException
-     */
-    public function load_model($class_name, $arguments = array(), $load_only = false)
-    {
-        $paths = apply_filters(
-            'FHEE__EE_Registry__load_model__paths',
-            array(
-                EE_MODELS,
-                EE_CORE,
-            )
-        );
-        // retrieve instantiated class
-        return $this->_load(
-            $paths,
-            'EEM_',
-            $class_name,
-            'model',
-            $arguments,
-            false,
-            true,
-            $load_only
-        );
-    }
-
-
-    /**
-     * loads model classes - must be singletons
-     *
-     * @param string $class_name - simple class name ie: price
-     * @param mixed  $arguments
-     * @param bool   $load_only
-     * @return mixed | bool
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     * @throws ReflectionException
-     * @throws InvalidArgumentException
-     */
-    public function load_model_class($class_name, $arguments = array(), $load_only = true)
-    {
-        $paths = array(
-            EE_MODELS . 'fields' . DS,
-            EE_MODELS . 'helpers' . DS,
-            EE_MODELS . 'relations' . DS,
-            EE_MODELS . 'strategies' . DS,
-        );
-        // retrieve instantiated class
-        return $this->_load(
-            $paths,
-            'EE_',
-            $class_name,
-            '',
-            $arguments,
-            false,
-            true,
-            $load_only
-        );
-    }
-
-
-    /**
-     * Determines if $model_name is the name of an actual EE model.
-     *
-     * @param string $model_name like Event, Attendee, Question_Group_Question, etc.
-     * @return boolean
-     */
-    public function is_model_name($model_name)
-    {
-        return isset($this->models[ $model_name ]);
-    }
-
-
-    /**
-     * generic class loader
-     *
-     * @param string $path_to_file - directory path to file location, not including filename
-     * @param string $file_name    - file name  ie:  my_file.php, including extension
-     * @param string $type         - file type - core? class? helper? model?
-     * @param mixed  $arguments
-     * @param bool   $load_only
-     * @return mixed
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     * @throws ReflectionException
-     * @throws InvalidArgumentException
-     */
-    public function load_file($path_to_file, $file_name, $type = '', $arguments = array(), $load_only = true)
-    {
-        // retrieve instantiated class
-        return $this->_load(
-            $path_to_file,
-            '',
-            $file_name,
-            $type,
-            $arguments,
-            false,
-            true,
-            $load_only
-        );
-    }
-
-
-    /**
-     * @param string $path_to_file - directory path to file location, not including filename
-     * @param string $class_name   - full class name  ie:  My_Class
-     * @param string $type         - file type - core? class? helper? model?
-     * @param mixed  $arguments
-     * @param bool   $load_only
-     * @return bool|EE_Addon|object
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     * @throws ReflectionException
-     * @throws InvalidArgumentException
-     */
-    public function load_addon($path_to_file, $class_name, $type = 'class', $arguments = array(), $load_only = false)
-    {
-        // retrieve instantiated class
-        return $this->_load(
-            $path_to_file,
-            'addon',
-            $class_name,
-            $type,
-            $arguments,
-            false,
-            true,
-            $load_only
-        );
-    }
-
-
-    /**
-     * instantiates, caches, and automatically resolves dependencies
-     * for classes that use a Fully Qualified Class Name.
-     * if the class is not capable of being loaded using PSR-4 autoloading,
-     * then you need to use one of the existing load_*() methods
-     * which can resolve the classname and filepath from the passed arguments
-     *
-     * @param bool|string $class_name   Fully Qualified Class Name
-     * @param array       $arguments    an argument, or array of arguments to pass to the class upon instantiation
-     * @param bool        $cache        whether to cache the instantiated object for reuse
-     * @param bool        $from_db      some classes are instantiated from the db
-     *                                  and thus call a different method to instantiate
-     * @param bool        $load_only    if true, will only load the file, but will NOT instantiate an object
-     * @param bool|string $addon        if true, will cache the object in the EE_Registry->$addons array
-     * @return bool|null|mixed          null = failure to load or instantiate class object.
-     *                                  object = class loaded and instantiated successfully.
-     *                                  bool = fail or success when $load_only is true
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     * @throws ReflectionException
-     * @throws InvalidArgumentException
-     */
-    public function create(
-        $class_name = false,
-        $arguments = array(),
-        $cache = false,
-        $from_db = false,
-        $load_only = false,
-        $addon = false
-    ) {
-        $class_name = ltrim($class_name, '\\');
-        $class_name = $this->class_cache->getFqnForAlias($class_name);
-        $class_exists = $this->loadOrVerifyClassExists($class_name, $arguments);
-        // if a non-FQCN was passed, then
-        // verifyClassExists() might return an object
-        // or it could return null if the class just could not be found anywhere
-        if ($class_exists instanceof $class_name || $class_exists === null) {
-            // either way, return the results
-            return $class_exists;
-        }
-        $class_name = $class_exists;
-        // if we're only loading the class and it already exists, then let's just return true immediately
-        if ($load_only) {
-            return true;
-        }
-        $addon = $addon ? 'addon' : '';
-        // $this->_cache_on is toggled during the recursive loading that can occur with dependency injection
-        // $cache is controlled by individual calls to separate Registry loader methods like load_class()
-        // $load_only is also controlled by individual calls to separate Registry loader methods like load_file()
-        if ($this->_cache_on && $cache && ! $load_only) {
-            // return object if it's already cached
-            $cached_class = $this->_get_cached_class($class_name, $addon, $arguments);
-            if ($cached_class !== null) {
-                return $cached_class;
-            }
-        }// obtain the loader method from the dependency map
-        $loader = $this->_dependency_map->class_loader($class_name);// instantiate the requested object
-        if ($loader instanceof Closure) {
-            $class_obj = $loader($arguments);
-        } else {
-            if ($loader && method_exists($this, $loader)) {
-                $class_obj = $this->{$loader}($class_name, $arguments);
-            } else {
-                $class_obj = $this->_create_object($class_name, $arguments, $addon, $from_db);
-            }
-        }
-        if (($this->_cache_on && $cache) || $this->get_class_abbreviation($class_name, '')) {
-            // save it for later... kinda like gum  { : $
-            $this->_set_cached_class(
-                $class_obj,
-                $class_name,
-                $addon,
-                $from_db,
-                $arguments
-            );
-        }
-        $this->_cache_on = true;
-        return $class_obj;
-    }
-
-
-    /**
-     * Recursively checks that a class exists and potentially attempts to load classes with non-FQCNs
-     *
-     * @param string|object $class_name
-     * @param array         $arguments
-     * @param int           $attempt
-     * @return mixed
-     */
-    private function loadOrVerifyClassExists($class_name, array $arguments, $attempt = 1)
-    {
-        if (is_object($class_name) || class_exists($class_name)) {
-            return $class_name;
-        }
-        switch ($attempt) {
-            case 1:
-                // if it's a FQCN then maybe the class is registered with a preceding \
-                $class_name = strpos($class_name, '\\') !== false
-                    ? '\\' . ltrim($class_name, '\\')
-                    : $class_name;
-                break;
-            case 2:
-                //
-                $loader = $this->_dependency_map->class_loader($class_name);
-                if ($loader && method_exists($this, $loader)) {
-                    return $this->{$loader}($class_name, $arguments);
-                }
-                break;
-            case 3:
-            default:
-                return null;
-        }
-        $attempt++;
-        return $this->loadOrVerifyClassExists($class_name, $arguments, $attempt);
-    }
-
-
-    /**
-     * instantiates, caches, and injects dependencies for classes
-     *
-     * @param array       $file_paths   an array of paths to folders to look in
-     * @param string      $class_prefix EE  or EEM or... ???
-     * @param bool|string $class_name   $class name
-     * @param string      $type         file type - core? class? helper? model?
-     * @param mixed       $arguments    an argument or array of arguments to pass to the class upon instantiation
-     * @param bool        $from_db      some classes are instantiated from the db
-     *                                  and thus call a different method to instantiate
-     * @param bool        $cache        whether to cache the instantiated object for reuse
-     * @param bool        $load_only    if true, will only load the file, but will NOT instantiate an object
-     * @return bool|null|object null = failure to load or instantiate class object.
-     *                                  object = class loaded and instantiated successfully.
-     *                                  bool = fail or success when $load_only is true
-     * @throws EE_Error
-     * @throws ReflectionException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws InvalidArgumentException
-     */
-    protected function _load(
-        $file_paths = array(),
-        $class_prefix = 'EE_',
-        $class_name = false,
-        $type = 'class',
-        $arguments = array(),
-        $from_db = false,
-        $cache = true,
-        $load_only = false
-    ) {
-        $class_name = ltrim($class_name, '\\');
-        // strip php file extension
-        $class_name = str_replace('.php', '', trim($class_name));
-        // does the class have a prefix ?
-        if (! empty($class_prefix) && $class_prefix !== 'addon') {
-            // make sure $class_prefix is uppercase
-            $class_prefix = strtoupper(trim($class_prefix));
-            // add class prefix ONCE!!!
-            $class_name = $class_prefix . str_replace($class_prefix, '', $class_name);
-        }
-        $class_name = $this->class_cache->getFqnForAlias($class_name);
-        $class_exists = class_exists($class_name, false);
-        // if we're only loading the class and it already exists, then let's just return true immediately
-        if ($load_only && $class_exists) {
-            return true;
-        }
-        $arguments = is_array($arguments) ? $arguments : array($arguments);
-        // $this->_cache_on is toggled during the recursive loading that can occur with dependency injection
-        // $cache is controlled by individual calls to separate Registry loader methods like load_class()
-        // $load_only is also controlled by individual calls to separate Registry loader methods like load_file()
-        if ($this->_cache_on && $cache && ! $load_only) {
-            // return object if it's already cached
-            $cached_class = $this->_get_cached_class($class_name, $class_prefix, $arguments);
-            if ($cached_class !== null) {
-                return $cached_class;
-            }
-        }
-        // if the class doesn't already exist.. then we need to try and find the file and load it
-        if (! $class_exists) {
-            // get full path to file
-            $path = $this->_resolve_path($class_name, $type, $file_paths);
-            // load the file
-            $loaded = $this->_require_file($path, $class_name, $type, $file_paths);
-            // if we are only loading a file but NOT instantiating an object
-            // then return boolean for whether class was loaded or not
-            if ($load_only) {
-                return $loaded;
-            }
-            // if an object was expected but loading failed, then return nothing
-            if (! $loaded) {
-                return null;
-            }
-        }
-        // instantiate the requested object
-        $class_obj = $this->_create_object($class_name, $arguments, $type, $from_db);
-        if ($this->_cache_on && $cache) {
-            // save it for later... kinda like gum  { : $
-            $this->_set_cached_class(
-                $class_obj,
-                $class_name,
-                $class_prefix,
-                $from_db,
-                $arguments
-            );
-        }
-        $this->_cache_on = true;
-        return $class_obj;
-    }
-
-
-    /**
-     * @param string $class_name
-     * @param string $default have to specify something, but not anything that will conflict
-     * @return mixed|string
-     */
-    protected function get_class_abbreviation($class_name, $default = 'FANCY_BATMAN_PANTS')
-    {
-        return isset($this->_class_abbreviations[ $class_name ])
-            ? $this->_class_abbreviations[ $class_name ]
-            : $default;
-    }
-
-
-    /**
-     * attempts to find a cached version of the requested class
-     * by looking in the following places:
-     *        $this->{$class_abbreviation}            ie:    $this->CART
-     *        $this->{$class_name}                        ie:    $this->Some_Class
-     *        $this->LIB->{$class_name}                ie:    $this->LIB->Some_Class
-     *        $this->addon->{$class_name}    ie:    $this->addon->Some_Addon_Class
-     *
-     * @param string $class_name
-     * @param string $class_prefix
-     * @param array  $arguments
-     * @return mixed
-     */
-    protected function _get_cached_class(
-        $class_name,
-        $class_prefix = '',
-        $arguments = array()
-    ) {
-        if ($class_name === 'EE_Registry') {
-            return $this;
-        }
-        $class_abbreviation = $this->get_class_abbreviation($class_name);
-        // check if class has already been loaded, and return it if it has been
-        if (isset($this->{$class_abbreviation})) {
-            return $this->{$class_abbreviation};
-        }
-        $class_name = str_replace('\\', '_', $class_name);
-        if (isset($this->{$class_name})) {
-            return $this->{$class_name};
-        }
-        if ($class_prefix === 'addon' && isset($this->addons->{$class_name})) {
-            return $this->addons->{$class_name};
-        }
-        $object_identifier = $this->object_identifier->getIdentifier($class_name, $arguments);
-        if (isset($this->LIB->{$object_identifier})) {
-            return $this->LIB->{$object_identifier};
-        }
-        foreach ($this->LIB as $key => $object) {
-            if (// request does not contain new arguments and therefore no args identifier
-                ! $this->object_identifier->hasArguments($object_identifier)
-                // but previously cached class with args was found
-                && $this->object_identifier->fqcnMatchesObjectIdentifier($class_name, $key)
-            ) {
-                return $object;
-            }
-        }
-        return null;
-    }
-
-
-    /**
-     * removes a cached version of the requested class
-     *
-     * @param string  $class_name
-     * @param boolean $addon
-     * @param array   $arguments
-     * @return boolean
-     */
-    public function clear_cached_class(
-        $class_name,
-        $addon = false,
-        $arguments = array()
-    ) {
-        $class_abbreviation = $this->get_class_abbreviation($class_name);
-        // check if class has already been loaded, and return it if it has been
-        if (isset($this->{$class_abbreviation})) {
-            $this->{$class_abbreviation} = null;
-            return true;
-        }
-        $class_name = str_replace('\\', '_', $class_name);
-        if (isset($this->{$class_name})) {
-            $this->{$class_name} = null;
-            return true;
-        }
-        if ($addon && isset($this->addons->{$class_name})) {
-            unset($this->addons->{$class_name});
-            return true;
-        }
-        $class_name = $this->object_identifier->getIdentifier($class_name, $arguments);
-        if (isset($this->LIB->{$class_name})) {
-            unset($this->LIB->{$class_name});
-            return true;
-        }
-        return false;
-    }
-
-
-    /**
-     * _set_cached_class
-     * attempts to cache the instantiated class locally
-     * in one of the following places, in the following order:
-     *        $this->{class_abbreviation}   ie:    $this->CART
-     *        $this->{$class_name}          ie:    $this->Some_Class
-     *        $this->addon->{$$class_name}    ie:    $this->addon->Some_Addon_Class
-     *        $this->LIB->{$class_name}     ie:    $this->LIB->Some_Class
-     *
-     * @param object $class_obj
-     * @param string $class_name
-     * @param string $class_prefix
-     * @param bool   $from_db
-     * @param array  $arguments
-     * @return void
-     */
-    protected function _set_cached_class(
-        $class_obj,
-        $class_name,
-        $class_prefix = '',
-        $from_db = false,
-        $arguments = array()
-    ) {
-        if ($class_name === 'EE_Registry' || empty($class_obj)) {
-            return;
-        }
-        // return newly instantiated class
-        $class_abbreviation = $this->get_class_abbreviation($class_name, '');
-        if ($class_abbreviation) {
-            $this->{$class_abbreviation} = $class_obj;
-            return;
-        }
-        $class_name = str_replace('\\', '_', $class_name);
-        if (property_exists($this, $class_name)) {
-            $this->{$class_name} = $class_obj;
-            return;
-        }
-        if ($class_prefix === 'addon') {
-            $this->addons->{$class_name} = $class_obj;
-            return;
-        }
-        if (! $from_db) {
-            $class_name = $this->object_identifier->getIdentifier($class_name, $arguments);
-            $this->LIB->{$class_name} = $class_obj;
-        }
-    }
-
-
-    /**
-     * attempts to find a full valid filepath for the requested class.
-     * loops thru each of the base paths in the $file_paths array and appends : "{classname} . {file type} . php"
-     * then returns that path if the target file has been found and is readable
-     *
-     * @param string $class_name
-     * @param string $type
-     * @param array  $file_paths
-     * @return string | bool
-     */
-    protected function _resolve_path($class_name, $type = '', $file_paths = array())
-    {
-        // make sure $file_paths is an array
-        $file_paths = is_array($file_paths)
-            ? $file_paths
-            : array($file_paths);
-        // cycle thru paths
-        foreach ($file_paths as $key => $file_path) {
-            // convert all separators to proper DS, if no filepath, then use EE_CLASSES
-            $file_path = $file_path
-                ? str_replace(array('/', '\\'), DS, $file_path)
-                : EE_CLASSES;
-            // prep file type
-            $type = ! empty($type)
-                ? trim($type, '.') . '.'
-                : '';
-            // build full file path
-            $file_paths[ $key ] = rtrim($file_path, DS) . DS . $class_name . '.' . $type . 'php';
-            // does the file exist and can be read ?
-            if (is_readable($file_paths[ $key ])) {
-                return $file_paths[ $key ];
-            }
-        }
-        return false;
-    }
-
-
-    /**
-     * basically just performs a require_once()
-     * but with some error handling
-     *
-     * @param  string $path
-     * @param  string $class_name
-     * @param  string $type
-     * @param  array  $file_paths
-     * @return bool
-     * @throws EE_Error
-     * @throws ReflectionException
-     */
-    protected function _require_file($path, $class_name, $type = '', $file_paths = array())
-    {
-        $this->resolve_legacy_class_parent($class_name);
-        // don't give up! you gotta...
-        try {
-            // does the file exist and can it be read ?
-            if (! $path) {
-                // just in case the file has already been autoloaded,
-                // but discrepancies in the naming schema are preventing it from
-                // being loaded via one of the EE_Registry::load_*() methods,
-                // then let's try one last hail mary before throwing an exception
-                // and call class_exists() again, but with autoloading turned ON
-                if (class_exists($class_name)) {
-                    return true;
-                }
-                // so sorry, can't find the file
-                throw new EE_Error(
-                    sprintf(
-                        esc_html__(
-                            'The %1$s file %2$s could not be located or is not readable due to file permissions. Please ensure that the following filepath(s) are correct: %3$s',
-                            'event_espresso'
-                        ),
-                        trim($type, '.'),
-                        $class_name,
-                        '<br />' . implode(',<br />', $file_paths)
-                    )
-                );
-            }
-            // get the file
-            require_once($path);
-            // if the class isn't already declared somewhere
-            if (class_exists($class_name, false) === false) {
-                // so sorry, not a class
-                throw new EE_Error(
-                    sprintf(
-                        esc_html__(
-                            'The %s file %s does not appear to contain the %s Class.',
-                            'event_espresso'
-                        ),
-                        $type,
-                        $path,
-                        $class_name
-                    )
-                );
-            }
-        } catch (EE_Error $e) {
-            $e->get_error();
-            return false;
-        }
-        return true;
-    }
-
-
-    /**
-     * Some of our legacy classes that extended a parent class would simply use a require() statement
-     * before their class declaration in order to ensure that the parent class was loaded.
-     * This is not ideal, but it's nearly impossible to determine the parent class of a non-namespaced class,
-     * without triggering a fatal error because the parent class has yet to be loaded and therefore doesn't exist.
-     *
-     * @param string $class_name
-     */
-    protected function resolve_legacy_class_parent($class_name = '')
-    {
-        try {
-            $legacy_parent_class_map = array(
-                'EE_Payment_Processor' => 'core/business/EE_Processor_Base.class.php',
-            );
-            if (isset($legacy_parent_class_map[ $class_name ])) {
-                require_once EE_PLUGIN_DIR_PATH . $legacy_parent_class_map[ $class_name ];
-            }
-        } catch (Exception $exception) {
-        }
-    }
-
-
-    /**
-     * _create_object
-     * Attempts to instantiate the requested class via any of the
-     * commonly used instantiation methods employed throughout EE.
-     * The priority for instantiation is as follows:
-     *        - abstract classes or any class flagged as "load only" (no instantiation occurs)
-     *        - model objects via their 'new_instance_from_db' method
-     *        - model objects via their 'new_instance' method
-     *        - "singleton" classes" via their 'instance' method
-     *    - standard instantiable classes via their __constructor
-     * Prior to instantiation, if the classname exists in the dependency_map,
-     * then the constructor for the requested class will be examined to determine
-     * if any dependencies exist, and if they can be injected.
-     * If so, then those classes will be added to the array of arguments passed to the constructor
-     *
-     * @param string $class_name
-     * @param array  $arguments
-     * @param string $type
-     * @param bool   $from_db
-     * @return null|object|bool
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws EE_Error
-     * @throws ReflectionException
-     * @throws InvalidDataTypeException
-     */
-    protected function _create_object($class_name, $arguments = array(), $type = '', $from_db = false)
-    {
-        // create reflection
-        $reflector = $this->mirror->getReflectionClass($class_name);
-        // make sure arguments are an array
-        $arguments = is_array($arguments)
-            ? $arguments
-            : array($arguments);
-        // and if arguments array is numerically and sequentially indexed, then we want it to remain as is,
-        // else wrap it in an additional array so that it doesn't get split into multiple parameters
-        $arguments = $this->_array_is_numerically_and_sequentially_indexed($arguments)
-            ? $arguments
-            : array($arguments);
-        // attempt to inject dependencies ?
-        if ($this->_dependency_map->has($class_name)) {
-            $arguments = $this->_resolve_dependencies($reflector, $class_name, $arguments);
-        }
-        // instantiate the class if possible
-        if ($reflector->isAbstract()) {
-            // nothing to instantiate, loading file was enough
-            // does not throw an exception so $instantiation_mode is unused
-            // $instantiation_mode = "1) no constructor abstract class";
-            return true;
-        }
-        if (empty($arguments)
-            && $this->mirror->getConstructorFromReflection($reflector) === null
-            && $reflector->isInstantiable()
-        ) {
-            // no constructor = static methods only... nothing to instantiate, loading file was enough
-            // $instantiation_mode = "2) no constructor but instantiable";
-            return $reflector->newInstance();
-        }
-        if ($from_db && method_exists($class_name, 'new_instance_from_db')) {
-            // $instantiation_mode = "3) new_instance_from_db()";
-            return call_user_func_array(array($class_name, 'new_instance_from_db'), $arguments);
-        }
-        if (method_exists($class_name, 'new_instance')) {
-            // $instantiation_mode = "4) new_instance()";
-            return call_user_func_array(array($class_name, 'new_instance'), $arguments);
-        }
-        if (method_exists($class_name, 'instance')) {
-            // $instantiation_mode = "5) instance()";
-            return call_user_func_array(array($class_name, 'instance'), $arguments);
-        }
-        if ($reflector->isInstantiable()) {
-            // $instantiation_mode = "6) constructor";
-            return $reflector->newInstanceArgs($arguments);
-        }
-        // heh ? something's not right !
-        throw new EE_Error(
-            sprintf(
-                __('The %s file %s could not be instantiated.', 'event_espresso'),
-                $type,
-                $class_name
-            )
-        );
-    }
-
-
-    /**
-     * @see http://stackoverflow.com/questions/173400/how-to-check-if-php-array-is-associative-or-sequential
-     * @param array $array
-     * @return bool
-     */
-    protected function _array_is_numerically_and_sequentially_indexed(array $array)
-    {
-        return ! empty($array)
-            ? array_keys($array) === range(0, count($array) - 1)
-            : true;
-    }
-
-
-    /**
-     * _resolve_dependencies
-     * examines the constructor for the requested class to determine
-     * if any dependencies exist, and if they can be injected.
-     * If so, then those classes will be added to the array of arguments passed to the constructor
-     * PLZ NOTE: this is achieved by type hinting the constructor params
-     * For example:
-     *        if attempting to load a class "Foo" with the following constructor:
-     *        __construct( Bar $bar_class, Fighter $grohl_class )
-     *        then $bar_class and $grohl_class will be added to the $arguments array,
-     *        but only IF they are NOT already present in the incoming arguments array,
-     *        and the correct classes can be loaded
-     *
-     * @param ReflectionClass $reflector
-     * @param string          $class_name
-     * @param array           $arguments
-     * @return array
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     * @throws ReflectionException
-     */
-    protected function _resolve_dependencies(ReflectionClass $reflector, $class_name, array $arguments = array())
-    {
-        // let's examine the constructor
-        $constructor = $this->mirror->getConstructorFromReflection($reflector);
-        // whu? huh? nothing?
-        if (! $constructor) {
-            return $arguments;
-        }
-        // get constructor parameters
-        $params = $this->mirror->getParametersFromReflection($reflector);
-        // and the keys for the incoming arguments array so that we can compare existing arguments with what is expected
-        $argument_keys = array_keys($arguments);
-        // now loop thru all of the constructors expected parameters
-        foreach ($params as $index => $param) {
-            // is this a dependency for a specific class ?
-            $param_class = $this->mirror->getParameterClassName($param, $class_name, $index);
-            // BUT WAIT !!! This class may be an alias for something else (or getting replaced at runtime)
-            $param_class = $this->class_cache->isAlias($param_class, $class_name)
-                ? $this->class_cache->getFqnForAlias($param_class, $class_name)
-                : $param_class;
-            if (// param is not even a class
-                $param_class === null
-                // and something already exists in the incoming arguments for this param
-                && array_key_exists($index, $argument_keys)
-                && array_key_exists($argument_keys[ $index ], $arguments)
-            ) {
-                // so let's skip this argument and move on to the next
-                continue;
-            }
-            if (// parameter is type hinted as a class, exists as an incoming argument, AND it's the correct class
-                $param_class !== null
-                && isset($argument_keys[ $index ], $arguments[ $argument_keys[ $index ] ])
-                && $arguments[ $argument_keys[ $index ] ] instanceof $param_class
-            ) {
-                // skip this argument and move on to the next
-                continue;
-            }
-            if (// parameter is type hinted as a class, and should be injected
-                $param_class !== null
-                && $this->_dependency_map->has_dependency_for_class($class_name, $param_class)
-            ) {
-                $arguments = $this->_resolve_dependency(
-                    $class_name,
-                    $param_class,
-                    $arguments,
-                    $index
-                );
-            } else {
-                $arguments[ $index ] = $this->mirror->getParameterDefaultValue(
-                    $param,
-                    $class_name,
-                    $index
-                );
-            }
-        }
-        return $arguments;
-    }
-
-
-    /**
-     * @param string $class_name
-     * @param string $param_class
-     * @param array  $arguments
-     * @param mixed  $index
-     * @return array
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     */
-    protected function _resolve_dependency($class_name, $param_class, $arguments, $index)
-    {
-        $dependency = null;
-        // should dependency be loaded from cache ?
-        $cache_on = $this->_dependency_map->loading_strategy_for_class_dependency(
-            $class_name,
-            $param_class
-        );
-        $cache_on = $cache_on !== EE_Dependency_Map::load_new_object;
-        // we might have a dependency...
-        // let's MAYBE try and find it in our cache if that's what's been requested
-        $cached_class = $cache_on
-            ? $this->_get_cached_class($param_class)
-            : null;
-        // and grab it if it exists
-        if ($cached_class instanceof $param_class) {
-            $dependency = $cached_class;
-        } elseif ($param_class !== $class_name) {
-            // obtain the loader method from the dependency map
-            $loader = $this->_dependency_map->class_loader($param_class);
-            // is loader a custom closure ?
-            if ($loader instanceof Closure) {
-                $dependency = $loader($arguments);
-            } else {
-                // set the cache on property for the recursive loading call
-                $this->_cache_on = $cache_on;
-                // if not, then let's try and load it via the registry
-                if ($loader && method_exists($this, $loader)) {
-                    $dependency = $this->{$loader}($param_class);
-                } else {
-                    $dependency = LoaderFactory::getLoader()->load(
-                        $param_class,
-                        array(),
-                        $cache_on
-                    );
-                }
-            }
-        }
-        // did we successfully find the correct dependency ?
-        if ($dependency instanceof $param_class) {
-            // then let's inject it into the incoming array of arguments at the correct location
-            $arguments[ $index ] = $dependency;
-        }
-        return $arguments;
-    }
-
-
-    /**
-     * call any loader that's been registered in the EE_Dependency_Map::$_class_loaders array
-     *
-     * @param string $classname PLEASE NOTE: the class name needs to match what's registered
-     *                          in the EE_Dependency_Map::$_class_loaders array,
-     *                          including the class prefix, ie: "EE_", "EEM_", "EEH_", etc
-     * @param array  $arguments
-     * @return object
-     */
-    public static function factory($classname, $arguments = array())
-    {
-        $loader = self::instance()->_dependency_map->class_loader($classname);
-        if ($loader instanceof Closure) {
-            return $loader($arguments);
-        }
-        if (method_exists(self::instance(), $loader)) {
-            return self::instance()->{$loader}($classname, $arguments);
-        }
-        return null;
-    }
-
-
-    /**
-     * Gets the addon by its class name
-     *
-     * @param string $class_name
-     * @return EE_Addon
-     */
-    public function getAddon($class_name)
-    {
-        $class_name = str_replace('\\', '_', $class_name);
-        return $this->addons->{$class_name};
-    }
-
-
-    /**
-     * removes the addon from the internal cache
-     *
-     * @param string $class_name
-     * @return void
-     */
-    public function removeAddon($class_name)
-    {
-        $class_name = str_replace('\\', '_', $class_name);
-        unset($this->addons->{$class_name});
-    }
-
-
-    /**
-     * Gets the addon by its name/slug (not classname. For that, just
-     * use the get_addon() method above
-     *
-     * @param string $name
-     * @return EE_Addon
-     */
-    public function get_addon_by_name($name)
-    {
-        foreach ($this->addons as $addon) {
-            if ($addon->name() === $name) {
-                return $addon;
-            }
-        }
-        return null;
-    }
-
-
-    /**
-     * Gets an array of all the registered addons, where the keys are their names.
-     * (ie, what each returns for their name() function)
-     * They're already available on EE_Registry::instance()->addons as properties,
-     * where each property's name is the addon's classname,
-     * So if you just want to get the addon by classname,
-     * OR use the get_addon() method above.
-     * PLEASE  NOTE:
-     * addons with Fully Qualified Class Names
-     * have had the namespace separators converted to underscores,
-     * so a classname like Fully\Qualified\ClassName
-     * would have been converted to Fully_Qualified_ClassName
-     *
-     * @return EE_Addon[] where the KEYS are the addon's name()
-     */
-    public function get_addons_by_name()
-    {
-        $addons = array();
-        foreach ($this->addons as $addon) {
-            $addons[ $addon->name() ] = $addon;
-        }
-        return $addons;
-    }
-
-
-    /**
-     * Resets the specified model's instance AND makes sure EE_Registry doesn't keep
-     * a stale copy of it around
-     *
-     * @param string $model_name
-     * @return \EEM_Base
-     * @throws \EE_Error
-     */
-    public function reset_model($model_name)
-    {
-        $model_class_name = strpos($model_name, 'EEM_') !== 0
-            ? "EEM_{$model_name}"
-            : $model_name;
-        if (! isset($this->LIB->{$model_class_name}) || ! $this->LIB->{$model_class_name} instanceof EEM_Base) {
-            return null;
-        }
-        // get that model reset it and make sure we nuke the old reference to it
-        if ($this->LIB->{$model_class_name} instanceof $model_class_name
-            && is_callable(
-                array($model_class_name, 'reset')
-            )) {
-            $this->LIB->{$model_class_name} = $this->LIB->{$model_class_name}->reset();
-        } else {
-            throw new EE_Error(
-                sprintf(
-                    esc_html__('Model %s does not have a method "reset"', 'event_espresso'),
-                    $model_name
-                )
-            );
-        }
-        return $this->LIB->{$model_class_name};
-    }
-
-
-    /**
-     * Resets the registry.
-     * The criteria for what gets reset is based on what can be shared between sites on the same request when
-     * switch_to_blog is used in a multisite install.  Here is a list of things that are NOT reset.
-     * - $_dependency_map
-     * - $_class_abbreviations
-     * - $NET_CFG (EE_Network_Config): The config is shared network wide so no need to reset.
-     * - $REQ:  Still on the same request so no need to change.
-     * - $CAP: There is no site specific state in the EE_Capability class.
-     * - $SSN: Although ideally, the session should not be shared between site switches, we can't reset it because only
-     * one Session can be active in a single request.  Resetting could resolve in "headers already sent" errors.
-     * - $addons:  In multisite, the state of the addons is something controlled via hooks etc in a normal request.  So
-     *             for now, we won't reset the addons because it could break calls to an add-ons class/methods in the
-     *             switch or on the restore.
-     * - $modules
-     * - $shortcodes
-     * - $widgets
-     *
-     * @param boolean $hard             [deprecated]
-     * @param boolean $reinstantiate    whether to create new instances of EE_Registry's singletons too,
-     *                                  or just reset without re-instantiating (handy to set to FALSE if you're not
-     *                                  sure if you CAN currently reinstantiate the singletons at the moment)
-     * @param   bool  $reset_models     Defaults to true.  When false, then the models are not reset.  This is so
-     *                                  client
-     *                                  code instead can just change the model context to a different blog id if
-     *                                  necessary
-     * @return EE_Registry
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     * @throws ReflectionException
-     * @throws InvalidArgumentException
-     */
-    public static function reset($hard = false, $reinstantiate = true, $reset_models = true)
-    {
-        $instance = self::instance();
-        $instance->_cache_on = true;
-        // reset some "special" classes
-        EEH_Activation::reset();
-        $hard = apply_filters('FHEE__EE_Registry__reset__hard', $hard);
-        $instance->CFG = EE_Config::reset($hard, $reinstantiate);
-        $instance->CART = null;
-        $instance->MRM = null;
-        $instance->AssetsRegistry = LoaderFactory::getLoader()->getShared(
-            'EventEspresso\core\services\assets\Registry'
-        );
-        // messages reset
-        EED_Messages::reset();
-        // handle of objects cached on LIB
-        foreach (array('LIB', 'modules') as $cache) {
-            foreach ($instance->{$cache} as $class_name => $class) {
-                if (self::_reset_and_unset_object($class, $reset_models)) {
-                    unset($instance->{$cache}->{$class_name});
-                }
-            }
-        }
-        return $instance;
-    }
-
-
-    /**
-     * if passed object implements ResettableInterface, then call it's reset() method
-     * if passed object implements InterminableInterface, then return false,
-     * to indicate that it should NOT be cleared from the Registry cache
-     *
-     * @param      $object
-     * @param bool $reset_models
-     * @return bool returns true if cached object should be unset
-     */
-    private static function _reset_and_unset_object($object, $reset_models)
-    {
-        if (! is_object($object)) {
-            // don't unset anything that's not an object
-            return false;
-        }
-        if ($object instanceof EED_Module) {
-            $object::reset();
-            // don't unset modules
-            return false;
-        }
-        if ($object instanceof ResettableInterface) {
-            if ($object instanceof EEM_Base) {
-                if ($reset_models) {
-                    $object->reset();
-                    return true;
-                }
-                return false;
-            }
-            $object->reset();
-            return true;
-        }
-        if (! $object instanceof InterminableInterface) {
-            return true;
-        }
-        return false;
-    }
-
-
-    /**
-     * Gets all the custom post type models defined
-     *
-     * @return array keys are model "short names" (Eg "Event") and keys are classnames (eg "EEM_Event")
-     */
-    public function cpt_models()
-    {
-        $cpt_models = array();
-        foreach ($this->non_abstract_db_models as $short_name => $classname) {
-            if (is_subclass_of($classname, 'EEM_CPT_Base')) {
-                $cpt_models[ $short_name ] = $classname;
-            }
-        }
-        return $cpt_models;
-    }
-
-
-    /**
-     * @return \EE_Config
-     */
-    public static function CFG()
-    {
-        return self::instance()->CFG;
-    }
-
-
-    /**
-     * @deprecated 4.9.62.p
-     * @param string $class_name
-     * @return ReflectionClass
-     * @throws ReflectionException
-     * @throws InvalidDataTypeException
-     */
-    public function get_ReflectionClass($class_name)
-    {
-        return $this->mirror->getReflectionClass($class_name);
-    }
+	/**
+	 * @var EE_Registry $_instance
+	 */
+	private static $_instance;
+
+	/**
+	 * @var EE_Dependency_Map $_dependency_map
+	 */
+	protected $_dependency_map;
+
+	/**
+	 * @var Mirror
+	 */
+	private $mirror;
+
+	/**
+	 * @var ClassInterfaceCache $class_cache
+	 */
+	private $class_cache;
+
+	/**
+	 * @var array $_class_abbreviations
+	 */
+	protected $_class_abbreviations = array();
+
+	/**
+	 * @var CommandBusInterface $BUS
+	 */
+	public $BUS;
+
+	/**
+	 * @var EE_Cart $CART
+	 */
+	public $CART;
+
+	/**
+	 * @var EE_Config $CFG
+	 */
+	public $CFG;
+
+	/**
+	 * @var EE_Network_Config $NET_CFG
+	 */
+	public $NET_CFG;
+
+	/**
+	 * StdClass object for storing library classes in
+	 *
+	 * @var RegistryContainer $LIB
+	 */
+	public $LIB;
+
+	/**
+	 * @var EE_Request_Handler $REQ
+	 */
+	public $REQ;
+
+	/**
+	 * @var EE_Session $SSN
+	 */
+	public $SSN;
+
+	/**
+	 * @since 4.5.0
+	 * @var EE_Capabilities $CAP
+	 */
+	public $CAP;
+
+	/**
+	 * @since 4.9.0
+	 * @var EE_Message_Resource_Manager $MRM
+	 */
+	public $MRM;
+
+	/**
+	 * @var Registry $AssetsRegistry
+	 */
+	public $AssetsRegistry;
+
+	/**
+	 * StdClass object for holding addons which have registered themselves to work with EE core
+	 *
+	 * @var EE_Addon[] $addons
+	 */
+	public $addons;
+
+	/**
+	 * keys are 'short names' (eg Event), values are class names (eg 'EEM_Event')
+	 *
+	 * @var EEM_Base[] $models
+	 */
+	public $models = array();
+
+	/**
+	 * @var EED_Module[] $modules
+	 */
+	public $modules;
+
+	/**
+	 * @var EES_Shortcode[] $shortcodes
+	 */
+	public $shortcodes;
+
+	/**
+	 * @var WP_Widget[] $widgets
+	 */
+	public $widgets;
+
+	/**
+	 * this is an array of all implemented model names (i.e. not the parent abstract models, or models
+	 * which don't actually fetch items from the DB in the normal way (ie, are not children of EEM_Base)).
+	 * Keys are model "short names" (eg "Event") as used in model relations, and values are
+	 * classnames (eg "EEM_Event")
+	 *
+	 * @var array $non_abstract_db_models
+	 */
+	public $non_abstract_db_models = array();
+
+	/**
+	 * internationalization for JS strings
+	 *    usage:   EE_Registry::i18n_js_strings['string_key'] = esc_html__( 'string to translate.', 'event_espresso' );
+	 *    in js file:  var translatedString = eei18n.string_key;
+	 *
+	 * @var array $i18n_js_strings
+	 */
+	public static $i18n_js_strings = array();
+
+	/**
+	 * $main_file - path to espresso.php
+	 *
+	 * @var array $main_file
+	 */
+	public $main_file;
+
+	/**
+	 * array of ReflectionClass objects where the key is the class name
+	 *
+	 * @deprecated 4.9.62.p
+	 * @var ReflectionClass[] $_reflectors
+	 */
+	public $_reflectors;
+
+	/**
+	 * boolean flag to indicate whether or not to load/save dependencies from/to the cache
+	 *
+	 * @var boolean $_cache_on
+	 */
+	protected $_cache_on = true;
+
+	/**
+	 * @var ObjectIdentifier
+	 */
+	private $object_identifier;
+
+
+	/**
+	 * @singleton method used to instantiate class object
+	 * @param EE_Dependency_Map|null   $dependency_map
+	 * @param Mirror|null              $mirror
+	 * @param ClassInterfaceCache|null $class_cache
+	 * @param ObjectIdentifier|null    $object_identifier
+	 * @return EE_Registry instance
+	 */
+	public static function instance(
+		EE_Dependency_Map $dependency_map = null,
+		Mirror $mirror = null,
+		ClassInterfaceCache $class_cache = null,
+		ObjectIdentifier $object_identifier = null
+	) {
+		// check if class object is instantiated
+		if (! self::$_instance instanceof EE_Registry
+			&& $dependency_map instanceof EE_Dependency_Map
+			&& $mirror instanceof Mirror
+			&& $class_cache instanceof ClassInterfaceCache
+			&& $object_identifier instanceof ObjectIdentifier
+		) {
+			self::$_instance = new self(
+				$dependency_map,
+				$mirror,
+				$class_cache,
+				$object_identifier
+			);
+		}
+		return self::$_instance;
+	}
+
+
+	/**
+	 * protected constructor to prevent direct creation
+	 *
+	 * @Constructor
+	 * @param  EE_Dependency_Map  $dependency_map
+	 * @param Mirror              $mirror
+	 * @param ClassInterfaceCache $class_cache
+	 * @param ObjectIdentifier    $object_identifier
+	 */
+	protected function __construct(
+		EE_Dependency_Map $dependency_map,
+		Mirror $mirror,
+		ClassInterfaceCache $class_cache,
+		ObjectIdentifier $object_identifier
+	) {
+		$this->_dependency_map = $dependency_map;
+		$this->mirror = $mirror;
+		$this->class_cache = $class_cache;
+		$this->object_identifier = $object_identifier;
+		// $registry_container = new RegistryContainer();
+		$this->LIB = new RegistryContainer();
+		$this->addons = new RegistryContainer();
+		$this->modules = new RegistryContainer();
+		$this->shortcodes = new RegistryContainer();
+		$this->widgets = new RegistryContainer();
+		add_action('EE_Load_Espresso_Core__handle_request__initialize_core_loading', array($this, 'initialize'));
+	}
+
+
+	/**
+	 * initialize
+	 *
+	 * @throws OutOfBoundsException
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 * @throws ReflectionException
+	 */
+	public function initialize()
+	{
+		$this->_class_abbreviations = apply_filters(
+			'FHEE__EE_Registry____construct___class_abbreviations',
+			array(
+				'EE_Config'                                       => 'CFG',
+				'EE_Session'                                      => 'SSN',
+				'EE_Capabilities'                                 => 'CAP',
+				'EE_Cart'                                         => 'CART',
+				'EE_Network_Config'                               => 'NET_CFG',
+				'EE_Request_Handler'                              => 'REQ',
+				'EE_Message_Resource_Manager'                     => 'MRM',
+				'EventEspresso\core\services\commands\CommandBus' => 'BUS',
+				'EventEspresso\core\services\assets\Registry'     => 'AssetsRegistry',
+			)
+		);
+		$this->load_core('Base', array(), true);
+		// add our request and response objects to the cache
+		$request_loader = $this->_dependency_map->class_loader(
+			'EventEspresso\core\services\request\Request'
+		);
+		$this->_set_cached_class(
+			$request_loader(),
+			'EventEspresso\core\services\request\Request'
+		);
+		$response_loader = $this->_dependency_map->class_loader(
+			'EventEspresso\core\services\request\Response'
+		);
+		$this->_set_cached_class(
+			$response_loader(),
+			'EventEspresso\core\services\request\Response'
+		);
+		add_action('AHEE__EE_System__set_hooks_for_core', array($this, 'init'));
+	}
+
+
+	/**
+	 * @return void
+	 */
+	public function init()
+	{
+		// Get current page protocol
+		$protocol = isset($_SERVER['HTTPS']) ? 'https://' : 'http://';
+		// Output admin-ajax.php URL with same protocol as current page
+		self::$i18n_js_strings['ajax_url'] = admin_url('admin-ajax.php', $protocol);
+		self::$i18n_js_strings['wp_debug'] = defined('WP_DEBUG') ? WP_DEBUG : false;
+	}
+
+
+	/**
+	 * localize_i18n_js_strings
+	 *
+	 * @return string
+	 */
+	public static function localize_i18n_js_strings()
+	{
+		$i18n_js_strings = (array) self::$i18n_js_strings;
+		foreach ($i18n_js_strings as $key => $value) {
+			if (is_scalar($value)) {
+				$i18n_js_strings[ $key ] = html_entity_decode((string) $value, ENT_QUOTES, 'UTF-8');
+			}
+		}
+		return '/* <![CDATA[ */ var eei18n = ' . wp_json_encode($i18n_js_strings) . '; /* ]]> */';
+	}
+
+
+	/**
+	 * @param mixed string | EED_Module $module
+	 * @throws OutOfBoundsException
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 * @throws ReflectionException
+	 */
+	public function add_module($module)
+	{
+		if ($module instanceof EED_Module) {
+			$module_class = get_class($module);
+			$this->modules->{$module_class} = $module;
+		} else {
+			if (! class_exists('EE_Module_Request_Router', false)) {
+				$this->load_core('Module_Request_Router');
+			}
+			EE_Module_Request_Router::module_factory($module);
+		}
+	}
+
+
+	/**
+	 * @param string $module_name
+	 * @return mixed EED_Module | NULL
+	 */
+	public function get_module($module_name = '')
+	{
+		return isset($this->modules->{$module_name})
+			? $this->modules->{$module_name}
+			: null;
+	}
+
+
+	/**
+	 * loads core classes - must be singletons
+	 *
+	 * @param string $class_name - simple class name ie: session
+	 * @param mixed  $arguments
+	 * @param bool   $load_only
+	 * @return mixed
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 * @throws ReflectionException
+	 * @throws InvalidArgumentException
+	 */
+	public function load_core($class_name, $arguments = array(), $load_only = false)
+	{
+		$core_paths = apply_filters(
+			'FHEE__EE_Registry__load_core__core_paths',
+			array(
+				EE_CORE,
+				EE_ADMIN,
+				EE_CPTS,
+				EE_CORE . 'data_migration_scripts' . DS,
+				EE_CORE . 'capabilities' . DS,
+				EE_CORE . 'request_stack' . DS,
+				EE_CORE . 'middleware' . DS,
+			)
+		);
+		// retrieve instantiated class
+		return $this->_load(
+			$core_paths,
+			'EE_',
+			$class_name,
+			'core',
+			$arguments,
+			false,
+			true,
+			$load_only
+		);
+	}
+
+
+	/**
+	 * loads service classes
+	 *
+	 * @param string $class_name - simple class name ie: session
+	 * @param mixed  $arguments
+	 * @param bool   $load_only
+	 * @return mixed
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 * @throws ReflectionException
+	 * @throws InvalidArgumentException
+	 */
+	public function load_service($class_name, $arguments = array(), $load_only = false)
+	{
+		$service_paths = apply_filters(
+			'FHEE__EE_Registry__load_service__service_paths',
+			array(
+				EE_CORE . 'services' . DS,
+			)
+		);
+		// retrieve instantiated class
+		return $this->_load(
+			$service_paths,
+			'EE_',
+			$class_name,
+			'class',
+			$arguments,
+			false,
+			true,
+			$load_only
+		);
+	}
+
+
+	/**
+	 * loads data_migration_scripts
+	 *
+	 * @param string $class_name - class name for the DMS ie: EE_DMS_Core_4_2_0
+	 * @param mixed  $arguments
+	 * @return EE_Data_Migration_Script_Base|mixed
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 * @throws ReflectionException
+	 * @throws InvalidArgumentException
+	 */
+	public function load_dms($class_name, $arguments = array())
+	{
+		// retrieve instantiated class
+		return $this->_load(
+			EE_Data_Migration_Manager::instance()->get_data_migration_script_folders(),
+			'EE_DMS_',
+			$class_name,
+			'dms',
+			$arguments,
+			false,
+			false
+		);
+	}
+
+
+	/**
+	 * loads object creating classes - must be singletons
+	 *
+	 * @param string $class_name - simple class name ie: attendee
+	 * @param mixed  $arguments  - an array of arguments to pass to the class
+	 * @param bool   $from_db    - some classes are instantiated from the db and thus call a different method to
+	 *                           instantiate
+	 * @param bool   $cache      if you don't want the class to be stored in the internal cache (non-persistent) then
+	 *                           set this to FALSE (ie. when instantiating model objects from client in a loop)
+	 * @param bool   $load_only  whether or not to just load the file and NOT instantiate, or load AND instantiate
+	 *                           (default)
+	 * @return EE_Base_Class | bool
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 * @throws ReflectionException
+	 * @throws InvalidArgumentException
+	 */
+	public function load_class($class_name, $arguments = array(), $from_db = false, $cache = true, $load_only = false)
+	{
+		$paths = apply_filters(
+			'FHEE__EE_Registry__load_class__paths',
+			array(
+				EE_CORE,
+				EE_CLASSES,
+				EE_BUSINESS,
+			)
+		);
+		// retrieve instantiated class
+		return $this->_load(
+			$paths,
+			'EE_',
+			$class_name,
+			'class',
+			$arguments,
+			$from_db,
+			$cache,
+			$load_only
+		);
+	}
+
+
+	/**
+	 * loads helper classes - must be singletons
+	 *
+	 * @param string $class_name - simple class name ie: price
+	 * @param mixed  $arguments
+	 * @param bool   $load_only
+	 * @return EEH_Base | bool
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 * @throws ReflectionException
+	 * @throws InvalidArgumentException
+	 */
+	public function load_helper($class_name, $arguments = array(), $load_only = true)
+	{
+		// todo: add doing_it_wrong() in a few versions after all addons have had calls to this method removed
+		$helper_paths = apply_filters('FHEE__EE_Registry__load_helper__helper_paths', array(EE_HELPERS));
+		// retrieve instantiated class
+		return $this->_load(
+			$helper_paths,
+			'EEH_',
+			$class_name,
+			'helper',
+			$arguments,
+			false,
+			true,
+			$load_only
+		);
+	}
+
+
+	/**
+	 * loads core classes - must be singletons
+	 *
+	 * @param string $class_name - simple class name ie: session
+	 * @param mixed  $arguments
+	 * @param bool   $load_only
+	 * @param bool   $cache      whether to cache the object or not.
+	 * @return mixed
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 * @throws ReflectionException
+	 * @throws InvalidArgumentException
+	 */
+	public function load_lib($class_name, $arguments = array(), $load_only = false, $cache = true)
+	{
+		$paths = array(
+			EE_LIBRARIES,
+			EE_LIBRARIES . 'messages' . DS,
+			EE_LIBRARIES . 'shortcodes' . DS,
+			EE_LIBRARIES . 'qtips' . DS,
+			EE_LIBRARIES . 'payment_methods' . DS,
+		);
+		// retrieve instantiated class
+		return $this->_load(
+			$paths,
+			'EE_',
+			$class_name,
+			'lib',
+			$arguments,
+			false,
+			$cache,
+			$load_only
+		);
+	}
+
+
+	/**
+	 * loads model classes - must be singletons
+	 *
+	 * @param string $class_name - simple class name ie: price
+	 * @param mixed  $arguments
+	 * @param bool   $load_only
+	 * @return EEM_Base | bool
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 * @throws ReflectionException
+	 * @throws InvalidArgumentException
+	 */
+	public function load_model($class_name, $arguments = array(), $load_only = false)
+	{
+		$paths = apply_filters(
+			'FHEE__EE_Registry__load_model__paths',
+			array(
+				EE_MODELS,
+				EE_CORE,
+			)
+		);
+		// retrieve instantiated class
+		return $this->_load(
+			$paths,
+			'EEM_',
+			$class_name,
+			'model',
+			$arguments,
+			false,
+			true,
+			$load_only
+		);
+	}
+
+
+	/**
+	 * loads model classes - must be singletons
+	 *
+	 * @param string $class_name - simple class name ie: price
+	 * @param mixed  $arguments
+	 * @param bool   $load_only
+	 * @return mixed | bool
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 * @throws ReflectionException
+	 * @throws InvalidArgumentException
+	 */
+	public function load_model_class($class_name, $arguments = array(), $load_only = true)
+	{
+		$paths = array(
+			EE_MODELS . 'fields' . DS,
+			EE_MODELS . 'helpers' . DS,
+			EE_MODELS . 'relations' . DS,
+			EE_MODELS . 'strategies' . DS,
+		);
+		// retrieve instantiated class
+		return $this->_load(
+			$paths,
+			'EE_',
+			$class_name,
+			'',
+			$arguments,
+			false,
+			true,
+			$load_only
+		);
+	}
+
+
+	/**
+	 * Determines if $model_name is the name of an actual EE model.
+	 *
+	 * @param string $model_name like Event, Attendee, Question_Group_Question, etc.
+	 * @return boolean
+	 */
+	public function is_model_name($model_name)
+	{
+		return isset($this->models[ $model_name ]);
+	}
+
+
+	/**
+	 * generic class loader
+	 *
+	 * @param string $path_to_file - directory path to file location, not including filename
+	 * @param string $file_name    - file name  ie:  my_file.php, including extension
+	 * @param string $type         - file type - core? class? helper? model?
+	 * @param mixed  $arguments
+	 * @param bool   $load_only
+	 * @return mixed
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 * @throws ReflectionException
+	 * @throws InvalidArgumentException
+	 */
+	public function load_file($path_to_file, $file_name, $type = '', $arguments = array(), $load_only = true)
+	{
+		// retrieve instantiated class
+		return $this->_load(
+			$path_to_file,
+			'',
+			$file_name,
+			$type,
+			$arguments,
+			false,
+			true,
+			$load_only
+		);
+	}
+
+
+	/**
+	 * @param string $path_to_file - directory path to file location, not including filename
+	 * @param string $class_name   - full class name  ie:  My_Class
+	 * @param string $type         - file type - core? class? helper? model?
+	 * @param mixed  $arguments
+	 * @param bool   $load_only
+	 * @return bool|EE_Addon|object
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 * @throws ReflectionException
+	 * @throws InvalidArgumentException
+	 */
+	public function load_addon($path_to_file, $class_name, $type = 'class', $arguments = array(), $load_only = false)
+	{
+		// retrieve instantiated class
+		return $this->_load(
+			$path_to_file,
+			'addon',
+			$class_name,
+			$type,
+			$arguments,
+			false,
+			true,
+			$load_only
+		);
+	}
+
+
+	/**
+	 * instantiates, caches, and automatically resolves dependencies
+	 * for classes that use a Fully Qualified Class Name.
+	 * if the class is not capable of being loaded using PSR-4 autoloading,
+	 * then you need to use one of the existing load_*() methods
+	 * which can resolve the classname and filepath from the passed arguments
+	 *
+	 * @param bool|string $class_name   Fully Qualified Class Name
+	 * @param array       $arguments    an argument, or array of arguments to pass to the class upon instantiation
+	 * @param bool        $cache        whether to cache the instantiated object for reuse
+	 * @param bool        $from_db      some classes are instantiated from the db
+	 *                                  and thus call a different method to instantiate
+	 * @param bool        $load_only    if true, will only load the file, but will NOT instantiate an object
+	 * @param bool|string $addon        if true, will cache the object in the EE_Registry->$addons array
+	 * @return bool|null|mixed          null = failure to load or instantiate class object.
+	 *                                  object = class loaded and instantiated successfully.
+	 *                                  bool = fail or success when $load_only is true
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 * @throws ReflectionException
+	 * @throws InvalidArgumentException
+	 */
+	public function create(
+		$class_name = false,
+		$arguments = array(),
+		$cache = false,
+		$from_db = false,
+		$load_only = false,
+		$addon = false
+	) {
+		$class_name = ltrim($class_name, '\\');
+		$class_name = $this->class_cache->getFqnForAlias($class_name);
+		$class_exists = $this->loadOrVerifyClassExists($class_name, $arguments);
+		// if a non-FQCN was passed, then
+		// verifyClassExists() might return an object
+		// or it could return null if the class just could not be found anywhere
+		if ($class_exists instanceof $class_name || $class_exists === null) {
+			// either way, return the results
+			return $class_exists;
+		}
+		$class_name = $class_exists;
+		// if we're only loading the class and it already exists, then let's just return true immediately
+		if ($load_only) {
+			return true;
+		}
+		$addon = $addon ? 'addon' : '';
+		// $this->_cache_on is toggled during the recursive loading that can occur with dependency injection
+		// $cache is controlled by individual calls to separate Registry loader methods like load_class()
+		// $load_only is also controlled by individual calls to separate Registry loader methods like load_file()
+		if ($this->_cache_on && $cache && ! $load_only) {
+			// return object if it's already cached
+			$cached_class = $this->_get_cached_class($class_name, $addon, $arguments);
+			if ($cached_class !== null) {
+				return $cached_class;
+			}
+		}// obtain the loader method from the dependency map
+		$loader = $this->_dependency_map->class_loader($class_name);// instantiate the requested object
+		if ($loader instanceof Closure) {
+			$class_obj = $loader($arguments);
+		} else {
+			if ($loader && method_exists($this, $loader)) {
+				$class_obj = $this->{$loader}($class_name, $arguments);
+			} else {
+				$class_obj = $this->_create_object($class_name, $arguments, $addon, $from_db);
+			}
+		}
+		if (($this->_cache_on && $cache) || $this->get_class_abbreviation($class_name, '')) {
+			// save it for later... kinda like gum  { : $
+			$this->_set_cached_class(
+				$class_obj,
+				$class_name,
+				$addon,
+				$from_db,
+				$arguments
+			);
+		}
+		$this->_cache_on = true;
+		return $class_obj;
+	}
+
+
+	/**
+	 * Recursively checks that a class exists and potentially attempts to load classes with non-FQCNs
+	 *
+	 * @param string|object $class_name
+	 * @param array         $arguments
+	 * @param int           $attempt
+	 * @return mixed
+	 */
+	private function loadOrVerifyClassExists($class_name, array $arguments, $attempt = 1)
+	{
+		if (is_object($class_name) || class_exists($class_name)) {
+			return $class_name;
+		}
+		switch ($attempt) {
+			case 1:
+				// if it's a FQCN then maybe the class is registered with a preceding \
+				$class_name = strpos($class_name, '\\') !== false
+					? '\\' . ltrim($class_name, '\\')
+					: $class_name;
+				break;
+			case 2:
+				//
+				$loader = $this->_dependency_map->class_loader($class_name);
+				if ($loader && method_exists($this, $loader)) {
+					return $this->{$loader}($class_name, $arguments);
+				}
+				break;
+			case 3:
+			default:
+				return null;
+		}
+		$attempt++;
+		return $this->loadOrVerifyClassExists($class_name, $arguments, $attempt);
+	}
+
+
+	/**
+	 * instantiates, caches, and injects dependencies for classes
+	 *
+	 * @param array       $file_paths   an array of paths to folders to look in
+	 * @param string      $class_prefix EE  or EEM or... ???
+	 * @param bool|string $class_name   $class name
+	 * @param string      $type         file type - core? class? helper? model?
+	 * @param mixed       $arguments    an argument or array of arguments to pass to the class upon instantiation
+	 * @param bool        $from_db      some classes are instantiated from the db
+	 *                                  and thus call a different method to instantiate
+	 * @param bool        $cache        whether to cache the instantiated object for reuse
+	 * @param bool        $load_only    if true, will only load the file, but will NOT instantiate an object
+	 * @return bool|null|object null = failure to load or instantiate class object.
+	 *                                  object = class loaded and instantiated successfully.
+	 *                                  bool = fail or success when $load_only is true
+	 * @throws EE_Error
+	 * @throws ReflectionException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidArgumentException
+	 */
+	protected function _load(
+		$file_paths = array(),
+		$class_prefix = 'EE_',
+		$class_name = false,
+		$type = 'class',
+		$arguments = array(),
+		$from_db = false,
+		$cache = true,
+		$load_only = false
+	) {
+		$class_name = ltrim($class_name, '\\');
+		// strip php file extension
+		$class_name = str_replace('.php', '', trim($class_name));
+		// does the class have a prefix ?
+		if (! empty($class_prefix) && $class_prefix !== 'addon') {
+			// make sure $class_prefix is uppercase
+			$class_prefix = strtoupper(trim($class_prefix));
+			// add class prefix ONCE!!!
+			$class_name = $class_prefix . str_replace($class_prefix, '', $class_name);
+		}
+		$class_name = $this->class_cache->getFqnForAlias($class_name);
+		$class_exists = class_exists($class_name, false);
+		// if we're only loading the class and it already exists, then let's just return true immediately
+		if ($load_only && $class_exists) {
+			return true;
+		}
+		$arguments = is_array($arguments) ? $arguments : array($arguments);
+		// $this->_cache_on is toggled during the recursive loading that can occur with dependency injection
+		// $cache is controlled by individual calls to separate Registry loader methods like load_class()
+		// $load_only is also controlled by individual calls to separate Registry loader methods like load_file()
+		if ($this->_cache_on && $cache && ! $load_only) {
+			// return object if it's already cached
+			$cached_class = $this->_get_cached_class($class_name, $class_prefix, $arguments);
+			if ($cached_class !== null) {
+				return $cached_class;
+			}
+		}
+		// if the class doesn't already exist.. then we need to try and find the file and load it
+		if (! $class_exists) {
+			// get full path to file
+			$path = $this->_resolve_path($class_name, $type, $file_paths);
+			// load the file
+			$loaded = $this->_require_file($path, $class_name, $type, $file_paths);
+			// if we are only loading a file but NOT instantiating an object
+			// then return boolean for whether class was loaded or not
+			if ($load_only) {
+				return $loaded;
+			}
+			// if an object was expected but loading failed, then return nothing
+			if (! $loaded) {
+				return null;
+			}
+		}
+		// instantiate the requested object
+		$class_obj = $this->_create_object($class_name, $arguments, $type, $from_db);
+		if ($this->_cache_on && $cache) {
+			// save it for later... kinda like gum  { : $
+			$this->_set_cached_class(
+				$class_obj,
+				$class_name,
+				$class_prefix,
+				$from_db,
+				$arguments
+			);
+		}
+		$this->_cache_on = true;
+		return $class_obj;
+	}
+
+
+	/**
+	 * @param string $class_name
+	 * @param string $default have to specify something, but not anything that will conflict
+	 * @return mixed|string
+	 */
+	protected function get_class_abbreviation($class_name, $default = 'FANCY_BATMAN_PANTS')
+	{
+		return isset($this->_class_abbreviations[ $class_name ])
+			? $this->_class_abbreviations[ $class_name ]
+			: $default;
+	}
+
+
+	/**
+	 * attempts to find a cached version of the requested class
+	 * by looking in the following places:
+	 *        $this->{$class_abbreviation}            ie:    $this->CART
+	 *        $this->{$class_name}                        ie:    $this->Some_Class
+	 *        $this->LIB->{$class_name}                ie:    $this->LIB->Some_Class
+	 *        $this->addon->{$class_name}    ie:    $this->addon->Some_Addon_Class
+	 *
+	 * @param string $class_name
+	 * @param string $class_prefix
+	 * @param array  $arguments
+	 * @return mixed
+	 */
+	protected function _get_cached_class(
+		$class_name,
+		$class_prefix = '',
+		$arguments = array()
+	) {
+		if ($class_name === 'EE_Registry') {
+			return $this;
+		}
+		$class_abbreviation = $this->get_class_abbreviation($class_name);
+		// check if class has already been loaded, and return it if it has been
+		if (isset($this->{$class_abbreviation})) {
+			return $this->{$class_abbreviation};
+		}
+		$class_name = str_replace('\\', '_', $class_name);
+		if (isset($this->{$class_name})) {
+			return $this->{$class_name};
+		}
+		if ($class_prefix === 'addon' && isset($this->addons->{$class_name})) {
+			return $this->addons->{$class_name};
+		}
+		$object_identifier = $this->object_identifier->getIdentifier($class_name, $arguments);
+		if (isset($this->LIB->{$object_identifier})) {
+			return $this->LIB->{$object_identifier};
+		}
+		foreach ($this->LIB as $key => $object) {
+			if (// request does not contain new arguments and therefore no args identifier
+				! $this->object_identifier->hasArguments($object_identifier)
+				// but previously cached class with args was found
+				&& $this->object_identifier->fqcnMatchesObjectIdentifier($class_name, $key)
+			) {
+				return $object;
+			}
+		}
+		return null;
+	}
+
+
+	/**
+	 * removes a cached version of the requested class
+	 *
+	 * @param string  $class_name
+	 * @param boolean $addon
+	 * @param array   $arguments
+	 * @return boolean
+	 */
+	public function clear_cached_class(
+		$class_name,
+		$addon = false,
+		$arguments = array()
+	) {
+		$class_abbreviation = $this->get_class_abbreviation($class_name);
+		// check if class has already been loaded, and return it if it has been
+		if (isset($this->{$class_abbreviation})) {
+			$this->{$class_abbreviation} = null;
+			return true;
+		}
+		$class_name = str_replace('\\', '_', $class_name);
+		if (isset($this->{$class_name})) {
+			$this->{$class_name} = null;
+			return true;
+		}
+		if ($addon && isset($this->addons->{$class_name})) {
+			unset($this->addons->{$class_name});
+			return true;
+		}
+		$class_name = $this->object_identifier->getIdentifier($class_name, $arguments);
+		if (isset($this->LIB->{$class_name})) {
+			unset($this->LIB->{$class_name});
+			return true;
+		}
+		return false;
+	}
+
+
+	/**
+	 * _set_cached_class
+	 * attempts to cache the instantiated class locally
+	 * in one of the following places, in the following order:
+	 *        $this->{class_abbreviation}   ie:    $this->CART
+	 *        $this->{$class_name}          ie:    $this->Some_Class
+	 *        $this->addon->{$$class_name}    ie:    $this->addon->Some_Addon_Class
+	 *        $this->LIB->{$class_name}     ie:    $this->LIB->Some_Class
+	 *
+	 * @param object $class_obj
+	 * @param string $class_name
+	 * @param string $class_prefix
+	 * @param bool   $from_db
+	 * @param array  $arguments
+	 * @return void
+	 */
+	protected function _set_cached_class(
+		$class_obj,
+		$class_name,
+		$class_prefix = '',
+		$from_db = false,
+		$arguments = array()
+	) {
+		if ($class_name === 'EE_Registry' || empty($class_obj)) {
+			return;
+		}
+		// return newly instantiated class
+		$class_abbreviation = $this->get_class_abbreviation($class_name, '');
+		if ($class_abbreviation) {
+			$this->{$class_abbreviation} = $class_obj;
+			return;
+		}
+		$class_name = str_replace('\\', '_', $class_name);
+		if (property_exists($this, $class_name)) {
+			$this->{$class_name} = $class_obj;
+			return;
+		}
+		if ($class_prefix === 'addon') {
+			$this->addons->{$class_name} = $class_obj;
+			return;
+		}
+		if (! $from_db) {
+			$class_name = $this->object_identifier->getIdentifier($class_name, $arguments);
+			$this->LIB->{$class_name} = $class_obj;
+		}
+	}
+
+
+	/**
+	 * attempts to find a full valid filepath for the requested class.
+	 * loops thru each of the base paths in the $file_paths array and appends : "{classname} . {file type} . php"
+	 * then returns that path if the target file has been found and is readable
+	 *
+	 * @param string $class_name
+	 * @param string $type
+	 * @param array  $file_paths
+	 * @return string | bool
+	 */
+	protected function _resolve_path($class_name, $type = '', $file_paths = array())
+	{
+		// make sure $file_paths is an array
+		$file_paths = is_array($file_paths)
+			? $file_paths
+			: array($file_paths);
+		// cycle thru paths
+		foreach ($file_paths as $key => $file_path) {
+			// convert all separators to proper DS, if no filepath, then use EE_CLASSES
+			$file_path = $file_path
+				? str_replace(array('/', '\\'), DS, $file_path)
+				: EE_CLASSES;
+			// prep file type
+			$type = ! empty($type)
+				? trim($type, '.') . '.'
+				: '';
+			// build full file path
+			$file_paths[ $key ] = rtrim($file_path, DS) . DS . $class_name . '.' . $type . 'php';
+			// does the file exist and can be read ?
+			if (is_readable($file_paths[ $key ])) {
+				return $file_paths[ $key ];
+			}
+		}
+		return false;
+	}
+
+
+	/**
+	 * basically just performs a require_once()
+	 * but with some error handling
+	 *
+	 * @param  string $path
+	 * @param  string $class_name
+	 * @param  string $type
+	 * @param  array  $file_paths
+	 * @return bool
+	 * @throws EE_Error
+	 * @throws ReflectionException
+	 */
+	protected function _require_file($path, $class_name, $type = '', $file_paths = array())
+	{
+		$this->resolve_legacy_class_parent($class_name);
+		// don't give up! you gotta...
+		try {
+			// does the file exist and can it be read ?
+			if (! $path) {
+				// just in case the file has already been autoloaded,
+				// but discrepancies in the naming schema are preventing it from
+				// being loaded via one of the EE_Registry::load_*() methods,
+				// then let's try one last hail mary before throwing an exception
+				// and call class_exists() again, but with autoloading turned ON
+				if (class_exists($class_name)) {
+					return true;
+				}
+				// so sorry, can't find the file
+				throw new EE_Error(
+					sprintf(
+						esc_html__(
+							'The %1$s file %2$s could not be located or is not readable due to file permissions. Please ensure that the following filepath(s) are correct: %3$s',
+							'event_espresso'
+						),
+						trim($type, '.'),
+						$class_name,
+						'<br />' . implode(',<br />', $file_paths)
+					)
+				);
+			}
+			// get the file
+			require_once($path);
+			// if the class isn't already declared somewhere
+			if (class_exists($class_name, false) === false) {
+				// so sorry, not a class
+				throw new EE_Error(
+					sprintf(
+						esc_html__(
+							'The %s file %s does not appear to contain the %s Class.',
+							'event_espresso'
+						),
+						$type,
+						$path,
+						$class_name
+					)
+				);
+			}
+		} catch (EE_Error $e) {
+			$e->get_error();
+			return false;
+		}
+		return true;
+	}
+
+
+	/**
+	 * Some of our legacy classes that extended a parent class would simply use a require() statement
+	 * before their class declaration in order to ensure that the parent class was loaded.
+	 * This is not ideal, but it's nearly impossible to determine the parent class of a non-namespaced class,
+	 * without triggering a fatal error because the parent class has yet to be loaded and therefore doesn't exist.
+	 *
+	 * @param string $class_name
+	 */
+	protected function resolve_legacy_class_parent($class_name = '')
+	{
+		try {
+			$legacy_parent_class_map = array(
+				'EE_Payment_Processor' => 'core/business/EE_Processor_Base.class.php',
+			);
+			if (isset($legacy_parent_class_map[ $class_name ])) {
+				require_once EE_PLUGIN_DIR_PATH . $legacy_parent_class_map[ $class_name ];
+			}
+		} catch (Exception $exception) {
+		}
+	}
+
+
+	/**
+	 * _create_object
+	 * Attempts to instantiate the requested class via any of the
+	 * commonly used instantiation methods employed throughout EE.
+	 * The priority for instantiation is as follows:
+	 *        - abstract classes or any class flagged as "load only" (no instantiation occurs)
+	 *        - model objects via their 'new_instance_from_db' method
+	 *        - model objects via their 'new_instance' method
+	 *        - "singleton" classes" via their 'instance' method
+	 *    - standard instantiable classes via their __constructor
+	 * Prior to instantiation, if the classname exists in the dependency_map,
+	 * then the constructor for the requested class will be examined to determine
+	 * if any dependencies exist, and if they can be injected.
+	 * If so, then those classes will be added to the array of arguments passed to the constructor
+	 *
+	 * @param string $class_name
+	 * @param array  $arguments
+	 * @param string $type
+	 * @param bool   $from_db
+	 * @return null|object|bool
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws EE_Error
+	 * @throws ReflectionException
+	 * @throws InvalidDataTypeException
+	 */
+	protected function _create_object($class_name, $arguments = array(), $type = '', $from_db = false)
+	{
+		// create reflection
+		$reflector = $this->mirror->getReflectionClass($class_name);
+		// make sure arguments are an array
+		$arguments = is_array($arguments)
+			? $arguments
+			: array($arguments);
+		// and if arguments array is numerically and sequentially indexed, then we want it to remain as is,
+		// else wrap it in an additional array so that it doesn't get split into multiple parameters
+		$arguments = $this->_array_is_numerically_and_sequentially_indexed($arguments)
+			? $arguments
+			: array($arguments);
+		// attempt to inject dependencies ?
+		if ($this->_dependency_map->has($class_name)) {
+			$arguments = $this->_resolve_dependencies($reflector, $class_name, $arguments);
+		}
+		// instantiate the class if possible
+		if ($reflector->isAbstract()) {
+			// nothing to instantiate, loading file was enough
+			// does not throw an exception so $instantiation_mode is unused
+			// $instantiation_mode = "1) no constructor abstract class";
+			return true;
+		}
+		if (empty($arguments)
+			&& $this->mirror->getConstructorFromReflection($reflector) === null
+			&& $reflector->isInstantiable()
+		) {
+			// no constructor = static methods only... nothing to instantiate, loading file was enough
+			// $instantiation_mode = "2) no constructor but instantiable";
+			return $reflector->newInstance();
+		}
+		if ($from_db && method_exists($class_name, 'new_instance_from_db')) {
+			// $instantiation_mode = "3) new_instance_from_db()";
+			return call_user_func_array(array($class_name, 'new_instance_from_db'), $arguments);
+		}
+		if (method_exists($class_name, 'new_instance')) {
+			// $instantiation_mode = "4) new_instance()";
+			return call_user_func_array(array($class_name, 'new_instance'), $arguments);
+		}
+		if (method_exists($class_name, 'instance')) {
+			// $instantiation_mode = "5) instance()";
+			return call_user_func_array(array($class_name, 'instance'), $arguments);
+		}
+		if ($reflector->isInstantiable()) {
+			// $instantiation_mode = "6) constructor";
+			return $reflector->newInstanceArgs($arguments);
+		}
+		// heh ? something's not right !
+		throw new EE_Error(
+			sprintf(
+				__('The %s file %s could not be instantiated.', 'event_espresso'),
+				$type,
+				$class_name
+			)
+		);
+	}
+
+
+	/**
+	 * @see http://stackoverflow.com/questions/173400/how-to-check-if-php-array-is-associative-or-sequential
+	 * @param array $array
+	 * @return bool
+	 */
+	protected function _array_is_numerically_and_sequentially_indexed(array $array)
+	{
+		return ! empty($array)
+			? array_keys($array) === range(0, count($array) - 1)
+			: true;
+	}
+
+
+	/**
+	 * _resolve_dependencies
+	 * examines the constructor for the requested class to determine
+	 * if any dependencies exist, and if they can be injected.
+	 * If so, then those classes will be added to the array of arguments passed to the constructor
+	 * PLZ NOTE: this is achieved by type hinting the constructor params
+	 * For example:
+	 *        if attempting to load a class "Foo" with the following constructor:
+	 *        __construct( Bar $bar_class, Fighter $grohl_class )
+	 *        then $bar_class and $grohl_class will be added to the $arguments array,
+	 *        but only IF they are NOT already present in the incoming arguments array,
+	 *        and the correct classes can be loaded
+	 *
+	 * @param ReflectionClass $reflector
+	 * @param string          $class_name
+	 * @param array           $arguments
+	 * @return array
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 * @throws ReflectionException
+	 */
+	protected function _resolve_dependencies(ReflectionClass $reflector, $class_name, array $arguments = array())
+	{
+		// let's examine the constructor
+		$constructor = $this->mirror->getConstructorFromReflection($reflector);
+		// whu? huh? nothing?
+		if (! $constructor) {
+			return $arguments;
+		}
+		// get constructor parameters
+		$params = $this->mirror->getParametersFromReflection($reflector);
+		// and the keys for the incoming arguments array so that we can compare existing arguments with what is expected
+		$argument_keys = array_keys($arguments);
+		// now loop thru all of the constructors expected parameters
+		foreach ($params as $index => $param) {
+			// is this a dependency for a specific class ?
+			$param_class = $this->mirror->getParameterClassName($param, $class_name, $index);
+			// BUT WAIT !!! This class may be an alias for something else (or getting replaced at runtime)
+			$param_class = $this->class_cache->isAlias($param_class, $class_name)
+				? $this->class_cache->getFqnForAlias($param_class, $class_name)
+				: $param_class;
+			if (// param is not even a class
+				$param_class === null
+				// and something already exists in the incoming arguments for this param
+				&& array_key_exists($index, $argument_keys)
+				&& array_key_exists($argument_keys[ $index ], $arguments)
+			) {
+				// so let's skip this argument and move on to the next
+				continue;
+			}
+			if (// parameter is type hinted as a class, exists as an incoming argument, AND it's the correct class
+				$param_class !== null
+				&& isset($argument_keys[ $index ], $arguments[ $argument_keys[ $index ] ])
+				&& $arguments[ $argument_keys[ $index ] ] instanceof $param_class
+			) {
+				// skip this argument and move on to the next
+				continue;
+			}
+			if (// parameter is type hinted as a class, and should be injected
+				$param_class !== null
+				&& $this->_dependency_map->has_dependency_for_class($class_name, $param_class)
+			) {
+				$arguments = $this->_resolve_dependency(
+					$class_name,
+					$param_class,
+					$arguments,
+					$index
+				);
+			} else {
+				$arguments[ $index ] = $this->mirror->getParameterDefaultValue(
+					$param,
+					$class_name,
+					$index
+				);
+			}
+		}
+		return $arguments;
+	}
+
+
+	/**
+	 * @param string $class_name
+	 * @param string $param_class
+	 * @param array  $arguments
+	 * @param mixed  $index
+	 * @return array
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 */
+	protected function _resolve_dependency($class_name, $param_class, $arguments, $index)
+	{
+		$dependency = null;
+		// should dependency be loaded from cache ?
+		$cache_on = $this->_dependency_map->loading_strategy_for_class_dependency(
+			$class_name,
+			$param_class
+		);
+		$cache_on = $cache_on !== EE_Dependency_Map::load_new_object;
+		// we might have a dependency...
+		// let's MAYBE try and find it in our cache if that's what's been requested
+		$cached_class = $cache_on
+			? $this->_get_cached_class($param_class)
+			: null;
+		// and grab it if it exists
+		if ($cached_class instanceof $param_class) {
+			$dependency = $cached_class;
+		} elseif ($param_class !== $class_name) {
+			// obtain the loader method from the dependency map
+			$loader = $this->_dependency_map->class_loader($param_class);
+			// is loader a custom closure ?
+			if ($loader instanceof Closure) {
+				$dependency = $loader($arguments);
+			} else {
+				// set the cache on property for the recursive loading call
+				$this->_cache_on = $cache_on;
+				// if not, then let's try and load it via the registry
+				if ($loader && method_exists($this, $loader)) {
+					$dependency = $this->{$loader}($param_class);
+				} else {
+					$dependency = LoaderFactory::getLoader()->load(
+						$param_class,
+						array(),
+						$cache_on
+					);
+				}
+			}
+		}
+		// did we successfully find the correct dependency ?
+		if ($dependency instanceof $param_class) {
+			// then let's inject it into the incoming array of arguments at the correct location
+			$arguments[ $index ] = $dependency;
+		}
+		return $arguments;
+	}
+
+
+	/**
+	 * call any loader that's been registered in the EE_Dependency_Map::$_class_loaders array
+	 *
+	 * @param string $classname PLEASE NOTE: the class name needs to match what's registered
+	 *                          in the EE_Dependency_Map::$_class_loaders array,
+	 *                          including the class prefix, ie: "EE_", "EEM_", "EEH_", etc
+	 * @param array  $arguments
+	 * @return object
+	 */
+	public static function factory($classname, $arguments = array())
+	{
+		$loader = self::instance()->_dependency_map->class_loader($classname);
+		if ($loader instanceof Closure) {
+			return $loader($arguments);
+		}
+		if (method_exists(self::instance(), $loader)) {
+			return self::instance()->{$loader}($classname, $arguments);
+		}
+		return null;
+	}
+
+
+	/**
+	 * Gets the addon by its class name
+	 *
+	 * @param string $class_name
+	 * @return EE_Addon
+	 */
+	public function getAddon($class_name)
+	{
+		$class_name = str_replace('\\', '_', $class_name);
+		return $this->addons->{$class_name};
+	}
+
+
+	/**
+	 * removes the addon from the internal cache
+	 *
+	 * @param string $class_name
+	 * @return void
+	 */
+	public function removeAddon($class_name)
+	{
+		$class_name = str_replace('\\', '_', $class_name);
+		unset($this->addons->{$class_name});
+	}
+
+
+	/**
+	 * Gets the addon by its name/slug (not classname. For that, just
+	 * use the get_addon() method above
+	 *
+	 * @param string $name
+	 * @return EE_Addon
+	 */
+	public function get_addon_by_name($name)
+	{
+		foreach ($this->addons as $addon) {
+			if ($addon->name() === $name) {
+				return $addon;
+			}
+		}
+		return null;
+	}
+
+
+	/**
+	 * Gets an array of all the registered addons, where the keys are their names.
+	 * (ie, what each returns for their name() function)
+	 * They're already available on EE_Registry::instance()->addons as properties,
+	 * where each property's name is the addon's classname,
+	 * So if you just want to get the addon by classname,
+	 * OR use the get_addon() method above.
+	 * PLEASE  NOTE:
+	 * addons with Fully Qualified Class Names
+	 * have had the namespace separators converted to underscores,
+	 * so a classname like Fully\Qualified\ClassName
+	 * would have been converted to Fully_Qualified_ClassName
+	 *
+	 * @return EE_Addon[] where the KEYS are the addon's name()
+	 */
+	public function get_addons_by_name()
+	{
+		$addons = array();
+		foreach ($this->addons as $addon) {
+			$addons[ $addon->name() ] = $addon;
+		}
+		return $addons;
+	}
+
+
+	/**
+	 * Resets the specified model's instance AND makes sure EE_Registry doesn't keep
+	 * a stale copy of it around
+	 *
+	 * @param string $model_name
+	 * @return \EEM_Base
+	 * @throws \EE_Error
+	 */
+	public function reset_model($model_name)
+	{
+		$model_class_name = strpos($model_name, 'EEM_') !== 0
+			? "EEM_{$model_name}"
+			: $model_name;
+		if (! isset($this->LIB->{$model_class_name}) || ! $this->LIB->{$model_class_name} instanceof EEM_Base) {
+			return null;
+		}
+		// get that model reset it and make sure we nuke the old reference to it
+		if ($this->LIB->{$model_class_name} instanceof $model_class_name
+			&& is_callable(
+				array($model_class_name, 'reset')
+			)) {
+			$this->LIB->{$model_class_name} = $this->LIB->{$model_class_name}->reset();
+		} else {
+			throw new EE_Error(
+				sprintf(
+					esc_html__('Model %s does not have a method "reset"', 'event_espresso'),
+					$model_name
+				)
+			);
+		}
+		return $this->LIB->{$model_class_name};
+	}
+
+
+	/**
+	 * Resets the registry.
+	 * The criteria for what gets reset is based on what can be shared between sites on the same request when
+	 * switch_to_blog is used in a multisite install.  Here is a list of things that are NOT reset.
+	 * - $_dependency_map
+	 * - $_class_abbreviations
+	 * - $NET_CFG (EE_Network_Config): The config is shared network wide so no need to reset.
+	 * - $REQ:  Still on the same request so no need to change.
+	 * - $CAP: There is no site specific state in the EE_Capability class.
+	 * - $SSN: Although ideally, the session should not be shared between site switches, we can't reset it because only
+	 * one Session can be active in a single request.  Resetting could resolve in "headers already sent" errors.
+	 * - $addons:  In multisite, the state of the addons is something controlled via hooks etc in a normal request.  So
+	 *             for now, we won't reset the addons because it could break calls to an add-ons class/methods in the
+	 *             switch or on the restore.
+	 * - $modules
+	 * - $shortcodes
+	 * - $widgets
+	 *
+	 * @param boolean $hard             [deprecated]
+	 * @param boolean $reinstantiate    whether to create new instances of EE_Registry's singletons too,
+	 *                                  or just reset without re-instantiating (handy to set to FALSE if you're not
+	 *                                  sure if you CAN currently reinstantiate the singletons at the moment)
+	 * @param   bool  $reset_models     Defaults to true.  When false, then the models are not reset.  This is so
+	 *                                  client
+	 *                                  code instead can just change the model context to a different blog id if
+	 *                                  necessary
+	 * @return EE_Registry
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 * @throws ReflectionException
+	 * @throws InvalidArgumentException
+	 */
+	public static function reset($hard = false, $reinstantiate = true, $reset_models = true)
+	{
+		$instance = self::instance();
+		$instance->_cache_on = true;
+		// reset some "special" classes
+		EEH_Activation::reset();
+		$hard = apply_filters('FHEE__EE_Registry__reset__hard', $hard);
+		$instance->CFG = EE_Config::reset($hard, $reinstantiate);
+		$instance->CART = null;
+		$instance->MRM = null;
+		$instance->AssetsRegistry = LoaderFactory::getLoader()->getShared(
+			'EventEspresso\core\services\assets\Registry'
+		);
+		// messages reset
+		EED_Messages::reset();
+		// handle of objects cached on LIB
+		foreach (array('LIB', 'modules') as $cache) {
+			foreach ($instance->{$cache} as $class_name => $class) {
+				if (self::_reset_and_unset_object($class, $reset_models)) {
+					unset($instance->{$cache}->{$class_name});
+				}
+			}
+		}
+		return $instance;
+	}
+
+
+	/**
+	 * if passed object implements ResettableInterface, then call it's reset() method
+	 * if passed object implements InterminableInterface, then return false,
+	 * to indicate that it should NOT be cleared from the Registry cache
+	 *
+	 * @param      $object
+	 * @param bool $reset_models
+	 * @return bool returns true if cached object should be unset
+	 */
+	private static function _reset_and_unset_object($object, $reset_models)
+	{
+		if (! is_object($object)) {
+			// don't unset anything that's not an object
+			return false;
+		}
+		if ($object instanceof EED_Module) {
+			$object::reset();
+			// don't unset modules
+			return false;
+		}
+		if ($object instanceof ResettableInterface) {
+			if ($object instanceof EEM_Base) {
+				if ($reset_models) {
+					$object->reset();
+					return true;
+				}
+				return false;
+			}
+			$object->reset();
+			return true;
+		}
+		if (! $object instanceof InterminableInterface) {
+			return true;
+		}
+		return false;
+	}
+
+
+	/**
+	 * Gets all the custom post type models defined
+	 *
+	 * @return array keys are model "short names" (Eg "Event") and keys are classnames (eg "EEM_Event")
+	 */
+	public function cpt_models()
+	{
+		$cpt_models = array();
+		foreach ($this->non_abstract_db_models as $short_name => $classname) {
+			if (is_subclass_of($classname, 'EEM_CPT_Base')) {
+				$cpt_models[ $short_name ] = $classname;
+			}
+		}
+		return $cpt_models;
+	}
+
+
+	/**
+	 * @return \EE_Config
+	 */
+	public static function CFG()
+	{
+		return self::instance()->CFG;
+	}
+
+
+	/**
+	 * @deprecated 4.9.62.p
+	 * @param string $class_name
+	 * @return ReflectionClass
+	 * @throws ReflectionException
+	 * @throws InvalidDataTypeException
+	 */
+	public function get_ReflectionClass($class_name)
+	{
+		return $this->mirror->getReflectionClass($class_name);
+	}
 }

core/services/assets/AssetManagerInterface.php

Indentation +81 added lines, -81 removed lines

@@ -20,85 +20,85 @@
 interface AssetManagerInterface
 {
 
-    /**
-     * @since 4.9.62.p
-     */
-    public function addAssets();
-
-
-    /**
-     * @return ManifestFile
-     * @throws DuplicateCollectionIdentifierException
-     * @throws InvalidDataTypeException
-     * @throws InvalidEntityException
-     * @since 4.9.62.p
-     */
-    public function addManifestFile();
-
-
-    /**
-     * @return ManifestFile[]
-     * @since 4.9.62.p
-     */
-    public function getManifestFile();
-
-
-    /**
-     * @param string $handle
-     * @param string $source
-     * @param array  $dependencies
-     * @param bool   $load_in_footer
-     * @return JavascriptAsset
-     * @throws DuplicateCollectionIdentifierException
-     * @throws InvalidDataTypeException
-     * @throws InvalidEntityException
-     * @since 4.9.62.p
-     */
-    public function addJavascript(
-        $handle,
-        $source,
-        array $dependencies = array(),
-        $load_in_footer = true
-    );
-
-
-    /**
-     * @return JavascriptAsset[]
-     * @since 4.9.62.p
-     */
-    public function getJavascriptAssets();
-
-
-    /**
-     * @param string $handle
-     * @param string $source
-     * @param array  $dependencies
-     * @param string $media
-     * @return StylesheetAsset
-     * @throws DuplicateCollectionIdentifierException
-     * @throws InvalidDataTypeException
-     * @throws InvalidEntityException
-     * @since 4.9.62.p
-     */
-    public function addStylesheet(
-        $handle,
-        $source,
-        array $dependencies = array(),
-        $media = 'all'
-    );
-
-
-    /**
-     * @return StylesheetAsset[]
-     * @since 4.9.62.p
-     */
-    public function getStylesheetAssets();
-
-
-    /**
-     * @param string $handle
-     * @return bool
-     * @since 4.9.62.p
-     */
-    public function enqueueAsset($handle);
+	/**
+	 * @since 4.9.62.p
+	 */
+	public function addAssets();
+
+
+	/**
+	 * @return ManifestFile
+	 * @throws DuplicateCollectionIdentifierException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidEntityException
+	 * @since 4.9.62.p
+	 */
+	public function addManifestFile();
+
+
+	/**
+	 * @return ManifestFile[]
+	 * @since 4.9.62.p
+	 */
+	public function getManifestFile();
+
+
+	/**
+	 * @param string $handle
+	 * @param string $source
+	 * @param array  $dependencies
+	 * @param bool   $load_in_footer
+	 * @return JavascriptAsset
+	 * @throws DuplicateCollectionIdentifierException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidEntityException
+	 * @since 4.9.62.p
+	 */
+	public function addJavascript(
+		$handle,
+		$source,
+		array $dependencies = array(),
+		$load_in_footer = true
+	);
+
+
+	/**
+	 * @return JavascriptAsset[]
+	 * @since 4.9.62.p
+	 */
+	public function getJavascriptAssets();
+
+
+	/**
+	 * @param string $handle
+	 * @param string $source
+	 * @param array  $dependencies
+	 * @param string $media
+	 * @return StylesheetAsset
+	 * @throws DuplicateCollectionIdentifierException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidEntityException
+	 * @since 4.9.62.p
+	 */
+	public function addStylesheet(
+		$handle,
+		$source,
+		array $dependencies = array(),
+		$media = 'all'
+	);
+
+
+	/**
+	 * @return StylesheetAsset[]
+	 * @since 4.9.62.p
+	 */
+	public function getStylesheetAssets();
+
+
+	/**
+	 * @param string $handle
+	 * @return bool
+	 * @since 4.9.62.p
+	 */
+	public function enqueueAsset($handle);
 }

core/services/assets/AssetManager.php

Indentation +157 added lines, -157 removed lines

@@ -21,161 +21,161 @@
 abstract class AssetManager implements AssetManagerInterface
 {
 
-    /**
-     * @var AssetCollection $assets
-     */
-    protected $assets;
-
-    /**
-     * @var DomainInterface
-     */
-    protected $domain;
-
-    /**
-     * @var Registry $registry
-     */
-    protected $registry;
-
-
-    /**
-     * AssetRegister constructor.
-     *
-     * @param DomainInterface $domain
-     * @param AssetCollection $assets
-     * @param Registry        $registry
-     */
-    public function __construct(DomainInterface $domain, AssetCollection $assets, Registry $registry)
-    {
-        $this->domain = $domain;
-        $this->assets = $assets;
-        $this->registry = $registry;
-        add_action('wp_enqueue_scripts', array($this, 'addManifestFile'), 0);
-        add_action('admin_enqueue_scripts', array($this, 'addManifestFile'), 0);
-        add_action('wp_enqueue_scripts', array($this, 'addAssets'), 2);
-        add_action('admin_enqueue_scripts', array($this, 'addAssets'), 2);
-    }
-
-
-    /**
-     * @return void
-     * @throws DuplicateCollectionIdentifierException
-     * @throws InvalidDataTypeException
-     * @throws InvalidEntityException
-     * @since 4.9.62.p
-     */
-    public function addManifestFile()
-    {
-        // if a manifest file has already been added for this domain, then just return that one
-        if ($this->assets->has($this->domain->assetNamespace())) {
-            return;
-        }
-        $asset = new ManifestFile($this->domain);
-        $this->assets->add($asset, $this->domain->assetNamespace());
-    }
-
-
-    /**
-     * @return ManifestFile[]
-     * @since 4.9.62.p
-     */
-    public function getManifestFile()
-    {
-        return $this->assets->getManifestFiles();
-    }
-
-
-    /**
-     * @param string $handle
-     * @param string $source
-     * @param array  $dependencies
-     * @param bool   $load_in_footer
-     * @return JavascriptAsset
-     * @throws DuplicateCollectionIdentifierException
-     * @throws InvalidDataTypeException
-     * @throws InvalidEntityException
-     * @since 4.9.62.p
-     */
-    public function addJavascript(
-        $handle,
-        $source,
-        array $dependencies = array(),
-        $load_in_footer = true
-    ) {
-        $asset = new JavascriptAsset(
-            $handle,
-            $source,
-            $dependencies,
-            $load_in_footer,
-            $this->domain
-        );
-        $this->assets->add($asset, $handle);
-        return $asset;
-    }
-
-
-    /**
-     * @return JavascriptAsset[]
-     * @since 4.9.62.p
-     */
-    public function getJavascriptAssets()
-    {
-        return $this->assets->getJavascriptAssets();
-    }
-
-
-    /**
-     * @param string $handle
-     * @param string $source
-     * @param array  $dependencies
-     * @param string $media
-     * @return StylesheetAsset
-     * @throws DuplicateCollectionIdentifierException
-     * @throws InvalidDataTypeException
-     * @throws InvalidEntityException
-     * @since 4.9.62.p
-     */
-    public function addStylesheet(
-        $handle,
-        $source,
-        array $dependencies = array(),
-        $media = 'all'
-    ) {
-        $asset = new StylesheetAsset(
-            $handle,
-            $source,
-            $dependencies,
-            $this->domain,
-            $media
-        );
-        $this->assets->add($asset, $handle);
-        return $asset;
-    }
-
-
-    /**
-     * @return StylesheetAsset[]
-     * @since 4.9.62.p
-     */
-    public function getStylesheetAssets()
-    {
-        return $this->assets->getStylesheetAssets();
-    }
-
-
-    /**
-     * @param string $handle
-     * @return bool
-     * @since 4.9.62.p
-     */
-    public function enqueueAsset($handle)
-    {
-        if ($this->assets->has($handle)) {
-            $asset = $this->assets->get($handle);
-            if ($asset->isRegistered()) {
-                $asset->enqueueAsset();
-                return true;
-            }
-        }
-        return false;
-    }
+	/**
+	 * @var AssetCollection $assets
+	 */
+	protected $assets;
+
+	/**
+	 * @var DomainInterface
+	 */
+	protected $domain;
+
+	/**
+	 * @var Registry $registry
+	 */
+	protected $registry;
+
+
+	/**
+	 * AssetRegister constructor.
+	 *
+	 * @param DomainInterface $domain
+	 * @param AssetCollection $assets
+	 * @param Registry        $registry
+	 */
+	public function __construct(DomainInterface $domain, AssetCollection $assets, Registry $registry)
+	{
+		$this->domain = $domain;
+		$this->assets = $assets;
+		$this->registry = $registry;
+		add_action('wp_enqueue_scripts', array($this, 'addManifestFile'), 0);
+		add_action('admin_enqueue_scripts', array($this, 'addManifestFile'), 0);
+		add_action('wp_enqueue_scripts', array($this, 'addAssets'), 2);
+		add_action('admin_enqueue_scripts', array($this, 'addAssets'), 2);
+	}
+
+
+	/**
+	 * @return void
+	 * @throws DuplicateCollectionIdentifierException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidEntityException
+	 * @since 4.9.62.p
+	 */
+	public function addManifestFile()
+	{
+		// if a manifest file has already been added for this domain, then just return that one
+		if ($this->assets->has($this->domain->assetNamespace())) {
+			return;
+		}
+		$asset = new ManifestFile($this->domain);
+		$this->assets->add($asset, $this->domain->assetNamespace());
+	}
+
+
+	/**
+	 * @return ManifestFile[]
+	 * @since 4.9.62.p
+	 */
+	public function getManifestFile()
+	{
+		return $this->assets->getManifestFiles();
+	}
+
+
+	/**
+	 * @param string $handle
+	 * @param string $source
+	 * @param array  $dependencies
+	 * @param bool   $load_in_footer
+	 * @return JavascriptAsset
+	 * @throws DuplicateCollectionIdentifierException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidEntityException
+	 * @since 4.9.62.p
+	 */
+	public function addJavascript(
+		$handle,
+		$source,
+		array $dependencies = array(),
+		$load_in_footer = true
+	) {
+		$asset = new JavascriptAsset(
+			$handle,
+			$source,
+			$dependencies,
+			$load_in_footer,
+			$this->domain
+		);
+		$this->assets->add($asset, $handle);
+		return $asset;
+	}
+
+
+	/**
+	 * @return JavascriptAsset[]
+	 * @since 4.9.62.p
+	 */
+	public function getJavascriptAssets()
+	{
+		return $this->assets->getJavascriptAssets();
+	}
+
+
+	/**
+	 * @param string $handle
+	 * @param string $source
+	 * @param array  $dependencies
+	 * @param string $media
+	 * @return StylesheetAsset
+	 * @throws DuplicateCollectionIdentifierException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidEntityException
+	 * @since 4.9.62.p
+	 */
+	public function addStylesheet(
+		$handle,
+		$source,
+		array $dependencies = array(),
+		$media = 'all'
+	) {
+		$asset = new StylesheetAsset(
+			$handle,
+			$source,
+			$dependencies,
+			$this->domain,
+			$media
+		);
+		$this->assets->add($asset, $handle);
+		return $asset;
+	}
+
+
+	/**
+	 * @return StylesheetAsset[]
+	 * @since 4.9.62.p
+	 */
+	public function getStylesheetAssets()
+	{
+		return $this->assets->getStylesheetAssets();
+	}
+
+
+	/**
+	 * @param string $handle
+	 * @return bool
+	 * @since 4.9.62.p
+	 */
+	public function enqueueAsset($handle)
+	{
+		if ($this->assets->has($handle)) {
+			$asset = $this->assets->get($handle);
+			if ($asset->isRegistered()) {
+				$asset->enqueueAsset();
+				return true;
+			}
+		}
+		return false;
+	}
 }