eventespresso / event-espresso-core

core/libraries/messages/validators/email/EE_Messages_Email_Registration_Validator.class.php

Indentation +23 added lines, -23 removed lines

@@ -15,31 +15,31 @@
 {
 
 
-    public function __construct($fields, $context)
-    {
-        $this->_m_name = 'email';
-        $this->_mt_name = 'registration';
+	public function __construct($fields, $context)
+	{
+		$this->_m_name = 'email';
+		$this->_mt_name = 'registration';
 
-        parent::__construct($fields, $context);
-    }
+		parent::__construct($fields, $context);
+	}
 
-    /**
-     * custom validator (restricting what was originally set by the messenger)
-     */
-    protected function _modify_validator()
-    {
-        $new_config = $this->_messenger->get_validator_config();
-        // modify just event_list
-        $new_config['event_list'] = array(
-            'shortcodes' => array('event', 'attendee_list', 'ticket_list', 'datetime_list', 'venue', 'organization', 'event_author', 'primary_registration_details', 'primary_registration_list', 'recipient_details', 'recipient_list'),
-            'required' => array('[EVENT_LIST]')
-            );
-        $this->_messenger->set_validator_config($new_config);
+	/**
+	 * custom validator (restricting what was originally set by the messenger)
+	 */
+	protected function _modify_validator()
+	{
+		$new_config = $this->_messenger->get_validator_config();
+		// modify just event_list
+		$new_config['event_list'] = array(
+			'shortcodes' => array('event', 'attendee_list', 'ticket_list', 'datetime_list', 'venue', 'organization', 'event_author', 'primary_registration_details', 'primary_registration_list', 'recipient_details', 'recipient_list'),
+			'required' => array('[EVENT_LIST]')
+			);
+		$this->_messenger->set_validator_config($new_config);
 
-        if ($this->_context != 'admin') {
-            $this->_valid_shortcodes_modifier[ $this->_context ]['event_list'] = array('event', 'attendee_list', 'ticket_list', 'datetime_list', 'venue', 'organization', 'event_author', 'primary_registration_details', 'primary_registration_list', 'recipient_details', 'recipient_list');
-        }
+		if ($this->_context != 'admin') {
+			$this->_valid_shortcodes_modifier[ $this->_context ]['event_list'] = array('event', 'attendee_list', 'ticket_list', 'datetime_list', 'venue', 'organization', 'event_author', 'primary_registration_details', 'primary_registration_list', 'recipient_details', 'recipient_list');
+		}
 
-        $this->_specific_shortcode_excludes['content'] = array('[DISPLAY_PDF_URL]', '[DISPLAY_PDF_BUTTON]');
-    }
+		$this->_specific_shortcode_excludes['content'] = array('[DISPLAY_PDF_URL]', '[DISPLAY_PDF_BUTTON]');
+	}
 }

Spacing +1 added lines, -1 removed lines

@@ -38,7 +38,7 @@
         $this->_messenger->set_validator_config($new_config);
 
         if ($this->_context != 'admin') {
-            $this->_valid_shortcodes_modifier[ $this->_context ]['event_list'] = array('event', 'attendee_list', 'ticket_list', 'datetime_list', 'venue', 'organization', 'event_author', 'primary_registration_details', 'primary_registration_list', 'recipient_details', 'recipient_list');
+            $this->_valid_shortcodes_modifier[$this->_context]['event_list'] = array('event', 'attendee_list', 'ticket_list', 'datetime_list', 'venue', 'organization', 'event_author', 'primary_registration_details', 'primary_registration_list', 'recipient_details', 'recipient_list');
         }
 
         $this->_specific_shortcode_excludes['content'] = array('[DISPLAY_PDF_URL]', '[DISPLAY_PDF_BUTTON]');

core/libraries/messages/validators/email/EE_Messages_Email_Not_Approved_Registration_Validator.class.php

Indentation +22 added lines, -22 removed lines

@@ -15,30 +15,30 @@
 {
 
 
-    public function __construct($fields, $context)
-    {
-        $this->_m_name = 'email';
-        $this->_mt_name = 'not_approved_registration';
+	public function __construct($fields, $context)
+	{
+		$this->_m_name = 'email';
+		$this->_mt_name = 'not_approved_registration';
 
-        parent::__construct($fields, $context);
-    }
+		parent::__construct($fields, $context);
+	}
 
-    /**
-     * custom validator (restricting what was originally set by the messenger)
-     */
-    protected function _modify_validator()
-    {
-        $new_config = $this->_messenger->get_validator_config();
-        $new_config['event_list'] = array(
-            'shortcodes' => array('event', 'attendee_list', 'ticket_list', 'datetime_list', 'venue', 'organization', 'event_author', 'primary_registration_details', 'primary_registration_list', 'recipient_details', 'recipient_list'),
-            'required' => array('[EVENT_LIST]')
-            );
-        $this->_messenger->set_validator_config($new_config);
+	/**
+	 * custom validator (restricting what was originally set by the messenger)
+	 */
+	protected function _modify_validator()
+	{
+		$new_config = $this->_messenger->get_validator_config();
+		$new_config['event_list'] = array(
+			'shortcodes' => array('event', 'attendee_list', 'ticket_list', 'datetime_list', 'venue', 'organization', 'event_author', 'primary_registration_details', 'primary_registration_list', 'recipient_details', 'recipient_list'),
+			'required' => array('[EVENT_LIST]')
+			);
+		$this->_messenger->set_validator_config($new_config);
 
-        if ($this->_context != 'admin') {
-            $this->_valid_shortcodes_modifier[ $this->_context ]['event_list'] = array('event', 'attendee_list', 'ticket_list', 'datetime_list', 'venue', 'organization', 'event_author', 'primary_registration_details', 'primary_registration_list', 'recipient_details', 'recipient_list');
-        }
+		if ($this->_context != 'admin') {
+			$this->_valid_shortcodes_modifier[ $this->_context ]['event_list'] = array('event', 'attendee_list', 'ticket_list', 'datetime_list', 'venue', 'organization', 'event_author', 'primary_registration_details', 'primary_registration_list', 'recipient_details', 'recipient_list');
+		}
 
-        $this->_specific_shortcode_excludes['content'] = array('[DISPLAY_PDF_URL]', '[DISPLAY_PDF_BUTTON]');
-    }
+		$this->_specific_shortcode_excludes['content'] = array('[DISPLAY_PDF_URL]', '[DISPLAY_PDF_BUTTON]');
+	}
 }

Spacing +1 added lines, -1 removed lines

@@ -38,7 +38,7 @@
         $this->_messenger->set_validator_config($new_config);
 
         if ($this->_context != 'admin') {
-            $this->_valid_shortcodes_modifier[ $this->_context ]['event_list'] = array('event', 'attendee_list', 'ticket_list', 'datetime_list', 'venue', 'organization', 'event_author', 'primary_registration_details', 'primary_registration_list', 'recipient_details', 'recipient_list');
+            $this->_valid_shortcodes_modifier[$this->_context]['event_list'] = array('event', 'attendee_list', 'ticket_list', 'datetime_list', 'venue', 'organization', 'event_author', 'primary_registration_details', 'primary_registration_list', 'recipient_details', 'recipient_list');
         }
 
         $this->_specific_shortcode_excludes['content'] = array('[DISPLAY_PDF_URL]', '[DISPLAY_PDF_BUTTON]');

core/libraries/messages/validators/email/EE_Messages_Email_Pending_Approval_Validator.class.php

Indentation +23 added lines, -23 removed lines

@@ -15,31 +15,31 @@
 {
 
 
-    public function __construct($fields, $context)
-    {
-        $this->_m_name = 'email';
-        $this->_mt_name = 'pending_approval';
+	public function __construct($fields, $context)
+	{
+		$this->_m_name = 'email';
+		$this->_mt_name = 'pending_approval';
 
-        parent::__construct($fields, $context);
-    }
+		parent::__construct($fields, $context);
+	}
 
-    /**
-     * custom validator (restricting what was originally set by the messenger)
-     */
-    protected function _modify_validator()
-    {
-        $new_config = $this->_messenger->get_validator_config();
-        // modify just event_list
-        $new_config['event_list'] = array(
-            'shortcodes' => array('event', 'attendee_list', 'ticket_list', 'datetime_list', 'venue', 'organization', 'event_author', 'primary_registration_details', 'primary_registration_list', 'recipient_details', 'recipient_list'),
-            'required' => array('[EVENT_LIST]')
-            );
-        $this->_messenger->set_validator_config($new_config);
+	/**
+	 * custom validator (restricting what was originally set by the messenger)
+	 */
+	protected function _modify_validator()
+	{
+		$new_config = $this->_messenger->get_validator_config();
+		// modify just event_list
+		$new_config['event_list'] = array(
+			'shortcodes' => array('event', 'attendee_list', 'ticket_list', 'datetime_list', 'venue', 'organization', 'event_author', 'primary_registration_details', 'primary_registration_list', 'recipient_details', 'recipient_list'),
+			'required' => array('[EVENT_LIST]')
+			);
+		$this->_messenger->set_validator_config($new_config);
 
-        if ($this->_context != 'admin') {
-            $this->_valid_shortcodes_modifier[ $this->_context ]['event_list'] = array('event', 'attendee_list', 'ticket_list', 'datetime_list', 'venue', 'organization', 'event_author', 'primary_registration_details', 'primary_registration_list', 'recipient_details', 'recipient_list');
-        }
+		if ($this->_context != 'admin') {
+			$this->_valid_shortcodes_modifier[ $this->_context ]['event_list'] = array('event', 'attendee_list', 'ticket_list', 'datetime_list', 'venue', 'organization', 'event_author', 'primary_registration_details', 'primary_registration_list', 'recipient_details', 'recipient_list');
+		}
 
-        $this->_specific_shortcode_excludes['content'] = array('[DISPLAY_PDF_URL]', '[DISPLAY_PDF_BUTTON]');
-    }
+		$this->_specific_shortcode_excludes['content'] = array('[DISPLAY_PDF_URL]', '[DISPLAY_PDF_BUTTON]');
+	}
 }

Spacing +1 added lines, -1 removed lines

@@ -38,7 +38,7 @@
         $this->_messenger->set_validator_config($new_config);
 
         if ($this->_context != 'admin') {
-            $this->_valid_shortcodes_modifier[ $this->_context ]['event_list'] = array('event', 'attendee_list', 'ticket_list', 'datetime_list', 'venue', 'organization', 'event_author', 'primary_registration_details', 'primary_registration_list', 'recipient_details', 'recipient_list');
+            $this->_valid_shortcodes_modifier[$this->_context]['event_list'] = array('event', 'attendee_list', 'ticket_list', 'datetime_list', 'venue', 'organization', 'event_author', 'primary_registration_details', 'primary_registration_list', 'recipient_details', 'recipient_list');
         }
 
         $this->_specific_shortcode_excludes['content'] = array('[DISPLAY_PDF_URL]', '[DISPLAY_PDF_BUTTON]');

core/libraries/messages/validators/email/EE_Messages_Email_Payment_Validator.class.php

Indentation +33 added lines, -33 removed lines

@@ -15,37 +15,37 @@
 {
 
 
-    public function __construct($fields, $context)
-    {
-        $this->_m_name = 'email';
-        $this->_mt_name = 'payment';
-
-        parent::__construct($fields, $context);
-    }
-
-    /**
-     * at this point no custom validation needed for this messenger/message_type combo.
-     */
-    protected function _modify_validator()
-    {
-        $new_config = $this->_messenger->get_validator_config();
-
-        // modify just event_list
-        $new_config['event_list'] = array(
-            'shortcodes' => array('event', 'attendee_list', 'ticket_list', 'datetime_list', 'venue', 'organization','recipient_details', 'recipient_list', 'event_author', 'primary_registration_details', 'primary_registration_list')
-            );
-        $new_config['ticket_list'] = array(
-            'shortcodes' => array('event_list', 'attendee_list', 'ticket', 'datetime_list', 'recipient_details', 'transaction')
-            );
-        $new_config['content'] = array(
-            'shortcodes' => array('event_list','attendee_list', 'ticket_list', 'organization', 'recipient_details', 'recipient_list', 'transaction', 'primary_registration_details', 'primary_registration_list', 'messenger')
-            );
-        $this->_messenger->set_validator_config($new_config);
-
-        if ($this->_context != 'admin') {
-            $this->_valid_shortcodes_modifier[ $this->_context ]['event_list'] = array('event', 'attendee_list', 'ticket_list', 'datetime_list', 'venue', 'organization', 'event_author', 'primary_registration_details', 'primary_registration_list', 'recipient_details', 'recipient_list');
-        }
-
-        $this->_specific_shortcode_excludes['content'] = array('[DISPLAY_PDF_URL]', '[DISPLAY_PDF_BUTTON]');
-    }
+	public function __construct($fields, $context)
+	{
+		$this->_m_name = 'email';
+		$this->_mt_name = 'payment';
+
+		parent::__construct($fields, $context);
+	}
+
+	/**
+	 * at this point no custom validation needed for this messenger/message_type combo.
+	 */
+	protected function _modify_validator()
+	{
+		$new_config = $this->_messenger->get_validator_config();
+
+		// modify just event_list
+		$new_config['event_list'] = array(
+			'shortcodes' => array('event', 'attendee_list', 'ticket_list', 'datetime_list', 'venue', 'organization','recipient_details', 'recipient_list', 'event_author', 'primary_registration_details', 'primary_registration_list')
+			);
+		$new_config['ticket_list'] = array(
+			'shortcodes' => array('event_list', 'attendee_list', 'ticket', 'datetime_list', 'recipient_details', 'transaction')
+			);
+		$new_config['content'] = array(
+			'shortcodes' => array('event_list','attendee_list', 'ticket_list', 'organization', 'recipient_details', 'recipient_list', 'transaction', 'primary_registration_details', 'primary_registration_list', 'messenger')
+			);
+		$this->_messenger->set_validator_config($new_config);
+
+		if ($this->_context != 'admin') {
+			$this->_valid_shortcodes_modifier[ $this->_context ]['event_list'] = array('event', 'attendee_list', 'ticket_list', 'datetime_list', 'venue', 'organization', 'event_author', 'primary_registration_details', 'primary_registration_list', 'recipient_details', 'recipient_list');
+		}
+
+		$this->_specific_shortcode_excludes['content'] = array('[DISPLAY_PDF_URL]', '[DISPLAY_PDF_BUTTON]');
+	}
 }

Spacing +3 added lines, -3 removed lines

@@ -32,18 +32,18 @@
 
         // modify just event_list
         $new_config['event_list'] = array(
-            'shortcodes' => array('event', 'attendee_list', 'ticket_list', 'datetime_list', 'venue', 'organization','recipient_details', 'recipient_list', 'event_author', 'primary_registration_details', 'primary_registration_list')
+            'shortcodes' => array('event', 'attendee_list', 'ticket_list', 'datetime_list', 'venue', 'organization', 'recipient_details', 'recipient_list', 'event_author', 'primary_registration_details', 'primary_registration_list')
             );
         $new_config['ticket_list'] = array(
             'shortcodes' => array('event_list', 'attendee_list', 'ticket', 'datetime_list', 'recipient_details', 'transaction')
             );
         $new_config['content'] = array(
-            'shortcodes' => array('event_list','attendee_list', 'ticket_list', 'organization', 'recipient_details', 'recipient_list', 'transaction', 'primary_registration_details', 'primary_registration_list', 'messenger')
+            'shortcodes' => array('event_list', 'attendee_list', 'ticket_list', 'organization', 'recipient_details', 'recipient_list', 'transaction', 'primary_registration_details', 'primary_registration_list', 'messenger')
             );
         $this->_messenger->set_validator_config($new_config);
 
         if ($this->_context != 'admin') {
-            $this->_valid_shortcodes_modifier[ $this->_context ]['event_list'] = array('event', 'attendee_list', 'ticket_list', 'datetime_list', 'venue', 'organization', 'event_author', 'primary_registration_details', 'primary_registration_list', 'recipient_details', 'recipient_list');
+            $this->_valid_shortcodes_modifier[$this->_context]['event_list'] = array('event', 'attendee_list', 'ticket_list', 'datetime_list', 'venue', 'organization', 'event_author', 'primary_registration_details', 'primary_registration_list', 'recipient_details', 'recipient_list');
         }
 
         $this->_specific_shortcode_excludes['content'] = array('[DISPLAY_PDF_URL]', '[DISPLAY_PDF_BUTTON]');

core/libraries/messages/validators/html/EE_Messages_Html_Invoice_Validator.class.php

Indentation +15 added lines, -15 removed lines

@@ -16,21 +16,21 @@
 class EE_Messages_Html_Invoice_Validator extends EE_Messages_Validator
 {
 
-    public function __construct($fields, $context)
-    {
-        $this->_m_name = 'html';
-        $this->_mt_name = 'invoice';
+	public function __construct($fields, $context)
+	{
+		$this->_m_name = 'html';
+		$this->_mt_name = 'invoice';
 
-        parent::__construct($fields, $context);
-    }
+		parent::__construct($fields, $context);
+	}
 
-    /**
-     * custom validator (restricting what was originally set by the messenger).
-     * Note nothing is currently done for this messenger and message type.
-     */
-    protected function _modify_validator()
-    {
-        $this->_specific_shortcode_excludes['content'] = array('[DISPLAY_HTML_URL]');
-        return;
-    }
+	/**
+	 * custom validator (restricting what was originally set by the messenger).
+	 * Note nothing is currently done for this messenger and message type.
+	 */
+	protected function _modify_validator()
+	{
+		$this->_specific_shortcode_excludes['content'] = array('[DISPLAY_HTML_URL]');
+		return;
+	}
 }

core/libraries/messages/validators/html/EE_Messages_Html_Receipt_Validator.class.php

Indentation +15 added lines, -15 removed lines

@@ -16,21 +16,21 @@
 class EE_Messages_Html_Receipt_Validator extends EE_Messages_Validator
 {
 
-    public function __construct($fields, $context)
-    {
-        $this->_m_name = 'html';
-        $this->_mt_name = 'receipt';
+	public function __construct($fields, $context)
+	{
+		$this->_m_name = 'html';
+		$this->_mt_name = 'receipt';
 
-        parent::__construct($fields, $context);
-    }
+		parent::__construct($fields, $context);
+	}
 
-    /**
-     * custom validator (restricting what was originally set by the messenger).
-     * Note nothing is currently done for this messenger and message type.
-     */
-    protected function _modify_validator()
-    {
-        $this->_specific_shortcode_excludes['content'] = array('[DISPLAY_HTML_URL]');
-        return;
-    }
+	/**
+	 * custom validator (restricting what was originally set by the messenger).
+	 * Note nothing is currently done for this messenger and message type.
+	 */
+	protected function _modify_validator()
+	{
+		$this->_specific_shortcode_excludes['content'] = array('[DISPLAY_HTML_URL]');
+		return;
+	}
 }

core/libraries/messages/EE_Messages_Base.lib.php

Indentation +264 added lines, -264 removed lines

@@ -14,44 +14,44 @@ 
 abstract class EE_Messages_Base extends EE_Base
 {
 
-    /** DETAILS PROPERTIES **/
-    /**
-     * The following are used to hold details on the type for reference (i.e. on admin screens)
-     * and also used by the EE_message_type object to figure out where to get template data.
-     */
-    public $name;
-    public $description;
-    protected $_messages_item_type; // messenger OR message_type?
-
-
-    /**
-     * This is an array describing the ui facing labels
-     * that will be used whenever the messenger is referenced in the ui
-     *
-     * array(
-     *  'singular' => __('something'),
-     *  'plural' => __('somethings')
-     * )
-     *
-     * @var array
-     */
-    public $label;
-
-
-
-
-    /**
-     * This property when set will hold the slugs of all EE admin pages that we will need to retrieve fields for
-     * (and used to determine which callback method to call from the child class)
-     *
-     * structure should be
-     * array(
-     * 'page_action' => true
-     * )
-     *
+	/** DETAILS PROPERTIES **/
+	/**
+	 * The following are used to hold details on the type for reference (i.e. on admin screens)
+	 * and also used by the EE_message_type object to figure out where to get template data.
+	 */
+	public $name;
+	public $description;
+	protected $_messages_item_type; // messenger OR message_type?
+
+
+	/**
+	 * This is an array describing the ui facing labels
+	 * that will be used whenever the messenger is referenced in the ui
+	 *
+	 * array(
+	 *  'singular' => __('something'),
+	 *  'plural' => __('somethings')
+	 * )
+	 *
+	 * @var array
+	 */
+	public $label;
+
+
+
+
+	/**
+	 * This property when set will hold the slugs of all EE admin pages that we will need to retrieve fields for
+	 * (and used to determine which callback method to call from the child class)
+	 *
+	 * structure should be
+	 * array(
+	 * 'page_action' => true
+	 * )
+	 *
 *@var array
-     */
-    public $admin_registered_pages = array();
+	 */
+	public $admin_registered_pages = array();
 
 
 
@@ -60,264 +60,264 @@ 
 
 
 
-    /**
-     * this property holds any specific fields for holding any settings related to a messenger (if any needed)
-     * @var array
-     */
-    protected $_admin_settings_fields = array();
+	/**
+	 * this property holds any specific fields for holding any settings related to a messenger (if any needed)
+	 * @var array
+	 */
+	protected $_admin_settings_fields = array();
 
 
 
 
 
-    /**
-     * this property will hold any existing settings that may have been set in the admin.
-     * @var array
-     */
-    protected $_existing_admin_settings = array();
+	/**
+	 * this property will hold any existing settings that may have been set in the admin.
+	 * @var array
+	 */
+	protected $_existing_admin_settings = array();
 
 
 
 
 
-    /**
-     * this property will hold an array of valid shortcodes for this message type and messengers.
-     * #For Message Types:
-     * This is an array of strings that correspond to defined EE_Shortcode libraries and per context.
-     * For example:
-     * array( 'admin' => array('transaction', 'event', 'attendee') )
-     * corresponds to 'EE_Transaction_Shortcodes.lib.php, EE_Event_Shortcodes.lib.php, EE_Attendee_Shortcodes.lib.php'
-     * for the admin context;
-     *
-     *
-     * #For Messengers:
-     * For example:
-     * array('subject' => array('transaction', 'event', 'attendee'))
-     * corresponds to 'EE_Transaction_Shortcodes.lib.php, EE_Event_Shortcodes.lib.php, EE_Attendee_Shortcodes.lib.php'
-     * for the 'subject' field;
-     * NOTE:  by default, with messengers, if the valid shortcodes for a field is left blank,
-     * that field will inherit whatever are set as valid shortcodes by message_type.
-     * This is so messenger can set specific valid codes for fields and leave other
-     * valid shortcodes up to the message type matched with the messenger.
-     *
-     * @access protected
-     * @var array
-     */
-    protected $_valid_shortcodes = array();
+	/**
+	 * this property will hold an array of valid shortcodes for this message type and messengers.
+	 * #For Message Types:
+	 * This is an array of strings that correspond to defined EE_Shortcode libraries and per context.
+	 * For example:
+	 * array( 'admin' => array('transaction', 'event', 'attendee') )
+	 * corresponds to 'EE_Transaction_Shortcodes.lib.php, EE_Event_Shortcodes.lib.php, EE_Attendee_Shortcodes.lib.php'
+	 * for the admin context;
+	 *
+	 *
+	 * #For Messengers:
+	 * For example:
+	 * array('subject' => array('transaction', 'event', 'attendee'))
+	 * corresponds to 'EE_Transaction_Shortcodes.lib.php, EE_Event_Shortcodes.lib.php, EE_Attendee_Shortcodes.lib.php'
+	 * for the 'subject' field;
+	 * NOTE:  by default, with messengers, if the valid shortcodes for a field is left blank,
+	 * that field will inherit whatever are set as valid shortcodes by message_type.
+	 * This is so messenger can set specific valid codes for fields and leave other
+	 * valid shortcodes up to the message type matched with the messenger.
+	 *
+	 * @access protected
+	 * @var array
+	 */
+	protected $_valid_shortcodes = array();
 
 
 
 
 
-    public function __construct()
-    {
-        $this->_set_admin_settings_fields();
-        $this->_set_valid_shortcodes();
-        $this->_set_admin_pages();
-    }
+	public function __construct()
+	{
+		$this->_set_admin_settings_fields();
+		$this->_set_valid_shortcodes();
+		$this->_set_admin_pages();
+	}
 
 
 
 
 
-    /**
-     * sets the _admin_settings_fields property which needs to be defined by child classes.
-     * You will want to set the _admin_settings_fields properties as a multi-dimensional array with the following format
-     * array(
-     *      {field_name - also used for setting index} => array(
-     *          'field_type' => {type of field: 'text', 'textarea', 'checkbox'},
-     *          'value_type' => {type of value: 'string', 'int', 'array', 'bool'},
-     *          'required' => {bool, required or not},
-     *          'validation' => {bool, true if we want validation, false if not},
-     *          'format' => {%d, or %s},
-     *          'label' => {label for the field, make sure it's localized},
-     *          'default' => {default value for the setting}
-     *      ),
-     * );
-     *
-     * @abstract
-     * @access protected
-     * @return void
-     */
-    abstract protected function _set_admin_settings_fields();
+	/**
+	 * sets the _admin_settings_fields property which needs to be defined by child classes.
+	 * You will want to set the _admin_settings_fields properties as a multi-dimensional array with the following format
+	 * array(
+	 *      {field_name - also used for setting index} => array(
+	 *          'field_type' => {type of field: 'text', 'textarea', 'checkbox'},
+	 *          'value_type' => {type of value: 'string', 'int', 'array', 'bool'},
+	 *          'required' => {bool, required or not},
+	 *          'validation' => {bool, true if we want validation, false if not},
+	 *          'format' => {%d, or %s},
+	 *          'label' => {label for the field, make sure it's localized},
+	 *          'default' => {default value for the setting}
+	 *      ),
+	 * );
+	 *
+	 * @abstract
+	 * @access protected
+	 * @return void
+	 */
+	abstract protected function _set_admin_settings_fields();
 
 
 
 
 
-    /**
-     * sets any properties on whether a message type or messenger interface shows up on a ee administration page.
-     * Child classes have to define this method but don't necessarily have to set the flags
-     * as they will be set to false by default.
-     *
-     * Child classes use this method to set the `_admin_registered_page` property.
-     * That property is to indicate what EE admin pages we have a corresponding callback for in the child class
-     * so Message Type/messenger fields/content is included on that admin page.
-     *
-     * @abstract
-     * @access protected
-     * @return void
-     */
-    abstract protected function _set_admin_pages();
+	/**
+	 * sets any properties on whether a message type or messenger interface shows up on a ee administration page.
+	 * Child classes have to define this method but don't necessarily have to set the flags
+	 * as they will be set to false by default.
+	 *
+	 * Child classes use this method to set the `_admin_registered_page` property.
+	 * That property is to indicate what EE admin pages we have a corresponding callback for in the child class
+	 * so Message Type/messenger fields/content is included on that admin page.
+	 *
+	 * @abstract
+	 * @access protected
+	 * @return void
+	 */
+	abstract protected function _set_admin_pages();
 
 
 
 
 
-    /**
-     * Child classes must declare the $_valid_shortcodes property using this method.
-     * See comments for $_valid_shortcodes property for details on what it is used for.
-     *
-     * @access protected
-     * @return void
-     */
-    abstract protected function _set_valid_shortcodes();
+	/**
+	 * Child classes must declare the $_valid_shortcodes property using this method.
+	 * See comments for $_valid_shortcodes property for details on what it is used for.
+	 *
+	 * @access protected
+	 * @return void
+	 */
+	abstract protected function _set_valid_shortcodes();
 
 
 
-    /**
-     * sets the _existing_admin_settings property can be overridden by child classes.
-     * We do this so we only do database calls if needed.
-     *
-     * @access protected
-     * @param string $messenger
-     */
-    protected function _set_existing_admin_settings($messenger = '')
-    {
-        /** @var EE_Message_Resource_Manager $Message_Resource_Manager */
-        $Message_Resource_Manager = EE_Registry::instance()->load_lib('Message_Resource_Manager');
-        $active_messengers = $Message_Resource_Manager->get_active_messengers_option();
-        $settings_to_use = $active_messengers;
-
-        /**
-         * This determines what will be used for the getting the settings.
-         */
-        if (! empty($messenger)
-            && $Message_Resource_Manager->is_message_type_active_for_messenger($messenger, $this->name)
-        ) {
-            $settings_to_use = $active_messengers[ $messenger ]['settings'][ $messenger . '-message_types' ];
-        }
-
-        $this->_existing_admin_settings = isset($settings_to_use[ $this->name ]['settings'])
-            ? $settings_to_use[ $this->name ]['settings']
-            : null;
-    }
-
-
-
-
-
-
-    /**
-     * get_existing_admin_settings
-     * (if needed) sets and returns the _existing_admin_settings property.
-     *
-     * @access public
-     * @param string $messenger
-     * @return array          settings
-     */
-    public function get_existing_admin_settings($messenger = '')
-    {
-        // if admin_settings property empty lets try setting it.
-        if (method_exists($this, '_set_existing_admin_settings') && empty($this->_existing_admin_settings)) {
-            $this->_set_existing_admin_settings($messenger);
-        }
-        return property_exists($this, '_existing_admin_settings')
-            ? $this->_existing_admin_settings
-            : null;
-    }
-
-
-
-
-
-
-    /**
-     * This returns the array of valid shortcodes for a message type or messenger as set by the child in the $_valid_shortcode property.
-     * @return array   an array of valid shortcodes.
-     */
-    public function get_valid_shortcodes()
-    {
-        $valid_shortcodes = apply_filters(
-            'FHEE__' . get_class($this) . '__get_valid_shortcodes',
-            $this->_valid_shortcodes,
-            $this
-        );
-        // The below filter applies to ALL messengers and message types so use with care!
-        $valid_shortcodes = apply_filters('FHEE__EE_Messages_Base__get_valid_shortcodes', $valid_shortcodes, $this);
-        return $valid_shortcodes;
-    }
-
-
-
-
-    /**
-     * getter that returns the protected admin_settings_fields property
-     *
-     * @access public
-     * @return array admin settings fields
-     */
-    public function get_admin_settings_fields()
-    {
-        return $this->_admin_settings_fields;
-    }
-
-
-
-
-
-    /**
-     * this public method accepts a page slug (for an EE_admin page)
-     * and will return the response from the child class callback function
-     * if that page is registered via the `_admin_registered_page` property set by the child class.
-     *
-     * @param string $page the slug of the EE admin page
-     * @param array $actives an array of active message type (or messenger) objects.
-     * @param string $action the page action (to allow for more specific handling - i.e. edit vs. add pages)
-     * @param array $extra This is just an extra argument that can be used
-     *                     to pass additional data for setting up page content.
-     * @access protected
-     * @return string $content for page.
-     */
-    protected function _get_admin_page_content($page, $action, $extra, $actives)
-    {
-        // we can also further refine the context by action (if present).
-        if (!empty($action)) {
-            $page = $page . '_' . $action;
-        }
-
-        if (!isset($this->admin_registered_pages[ $page ])) {
-            // todo: a place to throw an exception?
-            // We need to indicate there is no registered page so this function is not being called correctly.
-            return false;
-        }
-        // k made it here so let's call the method
-        $content = call_user_func_array(
-            array( $this, '_get_admin_content_' . $page ),
-            array( $actives, $extra )
-        );
-        if ($content === false) {
-            // todo this needs to be an exception once we've got exceptions in place.
-            return false;
-        }
-        return $content;
-    }
-
-
-    /**
-     * Allows a message type to specifically exclude template fields for the provided messenger.
-     * Filtered so this can be programmatically altered as well.
-     * @param string $messenger_name name of messenger
-     * @return array
-     */
-    public function excludedFieldsForMessenger($messenger_name)
-    {
-        return apply_filters(
-            'FHEE__EE_Messages_Base__excludedFieldForMessenger',
-            array(),
-            $messenger_name,
-            $this->name,
-            $this
-        );
-    }
+	/**
+	 * sets the _existing_admin_settings property can be overridden by child classes.
+	 * We do this so we only do database calls if needed.
+	 *
+	 * @access protected
+	 * @param string $messenger
+	 */
+	protected function _set_existing_admin_settings($messenger = '')
+	{
+		/** @var EE_Message_Resource_Manager $Message_Resource_Manager */
+		$Message_Resource_Manager = EE_Registry::instance()->load_lib('Message_Resource_Manager');
+		$active_messengers = $Message_Resource_Manager->get_active_messengers_option();
+		$settings_to_use = $active_messengers;
+
+		/**
+		 * This determines what will be used for the getting the settings.
+		 */
+		if (! empty($messenger)
+			&& $Message_Resource_Manager->is_message_type_active_for_messenger($messenger, $this->name)
+		) {
+			$settings_to_use = $active_messengers[ $messenger ]['settings'][ $messenger . '-message_types' ];
+		}
+
+		$this->_existing_admin_settings = isset($settings_to_use[ $this->name ]['settings'])
+			? $settings_to_use[ $this->name ]['settings']
+			: null;
+	}
+
+
+
+
+
+
+	/**
+	 * get_existing_admin_settings
+	 * (if needed) sets and returns the _existing_admin_settings property.
+	 *
+	 * @access public
+	 * @param string $messenger
+	 * @return array          settings
+	 */
+	public function get_existing_admin_settings($messenger = '')
+	{
+		// if admin_settings property empty lets try setting it.
+		if (method_exists($this, '_set_existing_admin_settings') && empty($this->_existing_admin_settings)) {
+			$this->_set_existing_admin_settings($messenger);
+		}
+		return property_exists($this, '_existing_admin_settings')
+			? $this->_existing_admin_settings
+			: null;
+	}
+
+
+
+
+
+
+	/**
+	 * This returns the array of valid shortcodes for a message type or messenger as set by the child in the $_valid_shortcode property.
+	 * @return array   an array of valid shortcodes.
+	 */
+	public function get_valid_shortcodes()
+	{
+		$valid_shortcodes = apply_filters(
+			'FHEE__' . get_class($this) . '__get_valid_shortcodes',
+			$this->_valid_shortcodes,
+			$this
+		);
+		// The below filter applies to ALL messengers and message types so use with care!
+		$valid_shortcodes = apply_filters('FHEE__EE_Messages_Base__get_valid_shortcodes', $valid_shortcodes, $this);
+		return $valid_shortcodes;
+	}
+
+
+
+
+	/**
+	 * getter that returns the protected admin_settings_fields property
+	 *
+	 * @access public
+	 * @return array admin settings fields
+	 */
+	public function get_admin_settings_fields()
+	{
+		return $this->_admin_settings_fields;
+	}
+
+
+
+
+
+	/**
+	 * this public method accepts a page slug (for an EE_admin page)
+	 * and will return the response from the child class callback function
+	 * if that page is registered via the `_admin_registered_page` property set by the child class.
+	 *
+	 * @param string $page the slug of the EE admin page
+	 * @param array $actives an array of active message type (or messenger) objects.
+	 * @param string $action the page action (to allow for more specific handling - i.e. edit vs. add pages)
+	 * @param array $extra This is just an extra argument that can be used
+	 *                     to pass additional data for setting up page content.
+	 * @access protected
+	 * @return string $content for page.
+	 */
+	protected function _get_admin_page_content($page, $action, $extra, $actives)
+	{
+		// we can also further refine the context by action (if present).
+		if (!empty($action)) {
+			$page = $page . '_' . $action;
+		}
+
+		if (!isset($this->admin_registered_pages[ $page ])) {
+			// todo: a place to throw an exception?
+			// We need to indicate there is no registered page so this function is not being called correctly.
+			return false;
+		}
+		// k made it here so let's call the method
+		$content = call_user_func_array(
+			array( $this, '_get_admin_content_' . $page ),
+			array( $actives, $extra )
+		);
+		if ($content === false) {
+			// todo this needs to be an exception once we've got exceptions in place.
+			return false;
+		}
+		return $content;
+	}
+
+
+	/**
+	 * Allows a message type to specifically exclude template fields for the provided messenger.
+	 * Filtered so this can be programmatically altered as well.
+	 * @param string $messenger_name name of messenger
+	 * @return array
+	 */
+	public function excludedFieldsForMessenger($messenger_name)
+	{
+		return apply_filters(
+			'FHEE__EE_Messages_Base__excludedFieldForMessenger',
+			array(),
+			$messenger_name,
+			$this->name,
+			$this
+		);
+	}
 }

Spacing +10 added lines, -10 removed lines

@@ -192,14 +192,14 @@ 
         /**
          * This determines what will be used for the getting the settings.
          */
-        if (! empty($messenger)
+        if ( ! empty($messenger)
             && $Message_Resource_Manager->is_message_type_active_for_messenger($messenger, $this->name)
         ) {
-            $settings_to_use = $active_messengers[ $messenger ]['settings'][ $messenger . '-message_types' ];
+            $settings_to_use = $active_messengers[$messenger]['settings'][$messenger.'-message_types'];
         }
 
-        $this->_existing_admin_settings = isset($settings_to_use[ $this->name ]['settings'])
-            ? $settings_to_use[ $this->name ]['settings']
+        $this->_existing_admin_settings = isset($settings_to_use[$this->name]['settings'])
+            ? $settings_to_use[$this->name]['settings']
             : null;
     }
 
@@ -239,7 +239,7 @@ 
     public function get_valid_shortcodes()
     {
         $valid_shortcodes = apply_filters(
-            'FHEE__' . get_class($this) . '__get_valid_shortcodes',
+            'FHEE__'.get_class($this).'__get_valid_shortcodes',
             $this->_valid_shortcodes,
             $this
         );
@@ -282,19 +282,19 @@ 
     protected function _get_admin_page_content($page, $action, $extra, $actives)
     {
         // we can also further refine the context by action (if present).
-        if (!empty($action)) {
-            $page = $page . '_' . $action;
+        if ( ! empty($action)) {
+            $page = $page.'_'.$action;
         }
 
-        if (!isset($this->admin_registered_pages[ $page ])) {
+        if ( ! isset($this->admin_registered_pages[$page])) {
             // todo: a place to throw an exception?
             // We need to indicate there is no registered page so this function is not being called correctly.
             return false;
         }
         // k made it here so let's call the method
         $content = call_user_func_array(
-            array( $this, '_get_admin_content_' . $page ),
-            array( $actives, $extra )
+            array($this, '_get_admin_content_'.$page),
+            array($actives, $extra)
         );
         if ($content === false) {
             // todo this needs to be an exception once we've got exceptions in place.

core/libraries/messages/EE_Messenger_Collection.lib.php

Indentation +179 added lines, -179 removed lines

@@ -14,183 +14,183 @@
 class EE_Messenger_Collection extends EE_Object_Collection
 {
 
-    /**
-     * EE_Messenger_Collection constructor.
-     */
-    public function __construct()
-    {
-        $this->interface = 'EE_messenger';
-    }
-
-
-
-    /**
-     * add
-     *
-     * attaches an object to the Collection
-     * and sets any supplied data associated with the current iterator entry
-     * by calling EE_Object_Collection::set_info()
-     *
-     * @access public
-     * @param object $object
-     * @param mixed  $info
-     * @return bool
-     */
-    public function add($object, $info = null)
-    {
-        $info = empty($info) && $object instanceof $this->interface ? $object->name : $info;
-        return parent::add($object, $info);
-    }
-
-
-
-    /**
-     * set_info
-     *
-     * Sets the data associated with an object in the Collection
-     * if no $info is supplied, then the spl_object_hash() is used
-     *
-     * @access public
-     * @param object $object
-     * @param mixed  $info
-     * @return bool
-     */
-    public function set_info($object, $info = null)
-    {
-        $info = empty($info) && $object instanceof $this->interface ? $object->name : $info;
-        return parent::set_info($object, $info);
-    }
-
-
-
-    /**
-     * get_by_info
-     *
-     * finds and returns an object in the Collection based on the info that was set using addObject()
-     * PLZ NOTE: the pointer is reset to the beginning of the collection before returning
-     *
-     * @access public
-     * @param mixed
-     * @return null | object
-     */
-    public function get_by_info($info)
-    {
-        return parent::get_by_info(str_replace(' ', '_', strtolower($info)));
-    }
-
-
-
-    /**
-     * has
-     *
-     * returns TRUE or FALSE depending on whether the supplied object is within the Collection
-     *
-     * @access public
-     * @param object $object
-     * @return bool
-     */
-    public function has($object)
-    {
-        return parent::has($object);
-    }
-
-
-
-    /**
-     * has_by_name
-     *
-     * returns TRUE or FALSE depending on whether the supplied messenger name is within the Collection
-     *
-     * @access public
-     * @param string $messenger_name
-     * @return bool
-     */
-    public function has_by_name($messenger_name)
-    {
-        return $this->get_by_info($messenger_name) instanceof $this->interface ? true : false;
-    }
-
-
-
-    /**
-     * remove
-     *
-     * detaches an object from the Collection
-     *
-     * @access public
-     * @param $object
-     * @return bool
-     */
-    public function remove($object)
-    {
-        return parent::remove($object);
-    }
-
-
-
-    /**
-     * current
-     *
-     * current object from the Collection
-     *
-     * @access public
-     * @return EE_messenger
-     */
-    public function current()
-    {
-        return parent::current();
-    }
-
-
-
-    /**
-     * set_current
-     *
-     * advances pointer to the provided object
-     *
-     * @access public
-     * @param $object
-     * @return void
-     */
-    public function set_current($object)
-    {
-        parent::set_current($object);
-    }
-
-
-
-    /**
-     * set_current_by_info
-     *
-     * advances pointer to the object whose info matches that which was provided
-     *
-     * @access public
-     * @param $info
-     * @return void
-     */
-    public function set_current_by_info($info)
-    {
-        parent::set_current_by_info($info);
-    }
-
-
-
-    /**
-     * show_collection_classes
-     *
-     * displays list of collection classes if WP_DEBUG is on
-     *
-     * @access public
-     * @return void
-     */
-    public function show_collection_classes()
-    {
-        if (WP_DEBUG) {
-            $this->rewind();
-            while ($this->valid()) {
-                echo '<h5 style="color:#2EA2CC;">' . __CLASS__ . ' class : . <span style="color:#E76700">' . $this->getInfo() . '</span></h5>';
-                $this->next();
-            }
-        }
-    }
+	/**
+	 * EE_Messenger_Collection constructor.
+	 */
+	public function __construct()
+	{
+		$this->interface = 'EE_messenger';
+	}
+
+
+
+	/**
+	 * add
+	 *
+	 * attaches an object to the Collection
+	 * and sets any supplied data associated with the current iterator entry
+	 * by calling EE_Object_Collection::set_info()
+	 *
+	 * @access public
+	 * @param object $object
+	 * @param mixed  $info
+	 * @return bool
+	 */
+	public function add($object, $info = null)
+	{
+		$info = empty($info) && $object instanceof $this->interface ? $object->name : $info;
+		return parent::add($object, $info);
+	}
+
+
+
+	/**
+	 * set_info
+	 *
+	 * Sets the data associated with an object in the Collection
+	 * if no $info is supplied, then the spl_object_hash() is used
+	 *
+	 * @access public
+	 * @param object $object
+	 * @param mixed  $info
+	 * @return bool
+	 */
+	public function set_info($object, $info = null)
+	{
+		$info = empty($info) && $object instanceof $this->interface ? $object->name : $info;
+		return parent::set_info($object, $info);
+	}
+
+
+
+	/**
+	 * get_by_info
+	 *
+	 * finds and returns an object in the Collection based on the info that was set using addObject()
+	 * PLZ NOTE: the pointer is reset to the beginning of the collection before returning
+	 *
+	 * @access public
+	 * @param mixed
+	 * @return null | object
+	 */
+	public function get_by_info($info)
+	{
+		return parent::get_by_info(str_replace(' ', '_', strtolower($info)));
+	}
+
+
+
+	/**
+	 * has
+	 *
+	 * returns TRUE or FALSE depending on whether the supplied object is within the Collection
+	 *
+	 * @access public
+	 * @param object $object
+	 * @return bool
+	 */
+	public function has($object)
+	{
+		return parent::has($object);
+	}
+
+
+
+	/**
+	 * has_by_name
+	 *
+	 * returns TRUE or FALSE depending on whether the supplied messenger name is within the Collection
+	 *
+	 * @access public
+	 * @param string $messenger_name
+	 * @return bool
+	 */
+	public function has_by_name($messenger_name)
+	{
+		return $this->get_by_info($messenger_name) instanceof $this->interface ? true : false;
+	}
+
+
+
+	/**
+	 * remove
+	 *
+	 * detaches an object from the Collection
+	 *
+	 * @access public
+	 * @param $object
+	 * @return bool
+	 */
+	public function remove($object)
+	{
+		return parent::remove($object);
+	}
+
+
+
+	/**
+	 * current
+	 *
+	 * current object from the Collection
+	 *
+	 * @access public
+	 * @return EE_messenger
+	 */
+	public function current()
+	{
+		return parent::current();
+	}
+
+
+
+	/**
+	 * set_current
+	 *
+	 * advances pointer to the provided object
+	 *
+	 * @access public
+	 * @param $object
+	 * @return void
+	 */
+	public function set_current($object)
+	{
+		parent::set_current($object);
+	}
+
+
+
+	/**
+	 * set_current_by_info
+	 *
+	 * advances pointer to the object whose info matches that which was provided
+	 *
+	 * @access public
+	 * @param $info
+	 * @return void
+	 */
+	public function set_current_by_info($info)
+	{
+		parent::set_current_by_info($info);
+	}
+
+
+
+	/**
+	 * show_collection_classes
+	 *
+	 * displays list of collection classes if WP_DEBUG is on
+	 *
+	 * @access public
+	 * @return void
+	 */
+	public function show_collection_classes()
+	{
+		if (WP_DEBUG) {
+			$this->rewind();
+			while ($this->valid()) {
+				echo '<h5 style="color:#2EA2CC;">' . __CLASS__ . ' class : . <span style="color:#E76700">' . $this->getInfo() . '</span></h5>';
+				$this->next();
+			}
+		}
+	}
 }

Spacing +1 added lines, -1 removed lines

@@ -188,7 +188,7 @@
         if (WP_DEBUG) {
             $this->rewind();
             while ($this->valid()) {
-                echo '<h5 style="color:#2EA2CC;">' . __CLASS__ . ' class : . <span style="color:#E76700">' . $this->getInfo() . '</span></h5>';
+                echo '<h5 style="color:#2EA2CC;">'.__CLASS__.' class : . <span style="color:#E76700">'.$this->getInfo().'</span></h5>';
                 $this->next();
             }
         }

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

Spacing +2 added lines, -2 removed lines

@@ -313,7 +313,7 @@ 
                     ),
                     'ticket_line_item_no_pms' => array(
                         'input' => 'textarea',
-                        'label' => '[TICKET_LINE_ITEM_LIST] <br>' . __(
+                        'label' => '[TICKET_LINE_ITEM_LIST] <br>'.__(
                             'Ticket Line Item List with no Price Modifiers',
                             'event_espresso'
                         ),
@@ -327,7 +327,7 @@ 
                     ),
                     'ticket_line_item_pms' => array(
                         'input' => 'textarea',
-                        'label' => '[TICKET_LINE_ITEM_LIST] <br>' . __(
+                        'label' => '[TICKET_LINE_ITEM_LIST] <br>'.__(
                             'Ticket Line Item List with Price Modifiers',
                             'event_espresso'
                         ),

Indentation +544 added lines, -544 removed lines

@@ -12,548 +12,548 @@
 {
 
 
-    /**
-     * The following are the properties that this messenger requires for displaying the html
-     */
-    /**
-     * This is the html body generated by the template via the message type.
-     *
-     * @var string
-     */
-    protected $_content;
-
-
-    /**
-     * This is for the page title that gets displayed.  (Why use "subject"?  Because the "title" tag in html is
-     * equivalent to the "subject" of the page.
-     *
-     * @var string
-     */
-    protected $_subject;
-
-
-    /**
-     * EE_Html_messenger constructor.
-     */
-    public function __construct()
-    {
-        // set properties
-        $this->name = 'html';
-        $this->description = __('This messenger outputs a message to a browser for display.', 'event_espresso');
-        $this->label = array(
-            'singular' => __('html', 'event_espresso'),
-            'plural' => __('html', 'event_espresso'),
-        );
-        $this->activate_on_install = true;
-        // add the "powered by EE" credit link to the HTML receipt and invoice
-        add_filter(
-            'FHEE__EE_Html_messenger___send_message__main_body',
-            array($this, 'add_powered_by_credit_link_to_receipt_and_invoice'),
-            10,
-            3
-        );
-        parent::__construct();
-    }
-
-
-    /**
-     * HTML Messenger desires execution immediately.
-     *
-     * @see    parent::send_now() for documentation.
-     * @since  4.9.0
-     * @return bool
-     */
-    public function send_now()
-    {
-        return true;
-    }
-
-
-    /**
-     * HTML Messenger allows an empty to field.
-     *
-     * @see    parent::allow_empty_to_field() for documentation
-     * @since  4.9.0
-     * @return bool
-     */
-    public function allow_empty_to_field()
-    {
-        return true;
-    }
-
-
-    /**
-     * @see abstract declaration in EE_messenger for details.
-     */
-    protected function _set_admin_pages()
-    {
-        $this->admin_registered_pages = array('events_edit' => true);
-    }
-
-
-    /**
-     * @see abstract declaration in EE_messenger for details.
-     */
-    protected function _set_valid_shortcodes()
-    {
-        $this->_valid_shortcodes = array();
-    }
-
-
-    /**
-     * @see abstract declaration in EE_messenger for details.
-     */
-    protected function _set_validator_config()
-    {
-        $this->_validator_config = array(
-            'subject' => array(
-                'shortcodes' => array('organization', 'primary_registration_details', 'email', 'transaction'),
-            ),
-            'content' => array(
-                'shortcodes' => array(
-                    'organization',
-                    'primary_registration_list',
-                    'primary_registration_details',
-                    'email',
-                    'transaction',
-                    'event_list',
-                    'payment_list',
-                    'venue',
-                    'line_item_list',
-                    'messenger',
-                    'ticket_list',
-                ),
-            ),
-            'event_list' => array(
-                'shortcodes' => array(
-                    'event',
-                    'ticket_list',
-                    'venue',
-                    'primary_registration_details',
-                    'primary_registration_list',
-                    'event_author',
-                ),
-                'required' => array('[EVENT_LIST]'),
-            ),
-            'ticket_list' => array(
-                'shortcodes' => array(
-                    'attendee_list',
-                    'ticket',
-                    'datetime_list',
-                    'primary_registration_details',
-                    'line_item_list',
-                    'venue',
-                ),
-                'required' => array('[TICKET_LIST]'),
-            ),
-            'ticket_line_item_no_pms' => array(
-                'shortcodes' => array('line_item', 'ticket'),
-                'required' => array('[TICKET_LINE_ITEM_LIST]'),
-            ),
-            'ticket_line_item_pms' => array(
-                'shortcodes' => array('line_item', 'ticket', 'line_item_list'),
-                'required' => array('[TICKET_LINE_ITEM_LIST]'),
-            ),
-            'price_modifier_line_item_list' => array(
-                'shortcodes' => array('line_item'),
-                'required' => array('[PRICE_MODIFIER_LINE_ITEM_LIST]'),
-            ),
-            'datetime_list' => array(
-                'shortcodes' => array('datetime'),
-                'required' => array('[DATETIME_LIST]'),
-            ),
-            'attendee_list' => array(
-                'shortcodes' => array('attendee'),
-                'required' => array('[ATTENDEE_LIST]'),
-            ),
-            'tax_line_item_list' => array(
-                'shortcodes' => array('line_item'),
-                'required' => array('[TAX_LINE_ITEM_LIST]'),
-            ),
-            'additional_line_item_list' => array(
-                'shortcodes' => array('line_item'),
-                'required' => array('[ADDITIONAL_LINE_ITEM_LIST]'),
-            ),
-            'payment_list' => array(
-                'shortcodes' => array('payment'),
-                'required' => array('[PAYMENT_LIST_*]'),
-            ),
-        );
-    }
-
-
-    /**
-     * This is a method called from EE_messages when this messenger is a generating messenger and the sending messenger
-     * is a different messenger.  Child messengers can set hooks for the sending messenger to callback on if necessary
-     * (i.e. swap out css files or something else).
-     *
-     * @since 4.5.0
-     * @param string $sending_messenger_name the name of the sending messenger so we only set the hooks needed.
-     * @return void
-     */
-    public function do_secondary_messenger_hooks($sending_messenger_name)
-    {
-        if ($sending_messenger_name === 'pdf') {
-            add_filter('EE_messenger__get_variation__variation', array($this, 'add_html_css'), 10, 8);
-        }
-    }
-
-
-    /**
-     * @param                            $variation_path
-     * @param \EE_Messages_Template_Pack $template_pack
-     * @param                            $messenger_name
-     * @param                            $message_type_name
-     * @param                            $url
-     * @param                            $type
-     * @param                            $variation
-     * @param                            $skip_filters
-     * @return string
-     */
-    public function add_html_css(
-        $variation_path,
-        EE_Messages_Template_Pack $template_pack,
-        $messenger_name,
-        $message_type_name,
-        $url,
-        $type,
-        $variation,
-        $skip_filters
-    ) {
-        $variation = $template_pack->get_variation(
-            $this->name,
-            $message_type_name,
-            $type,
-            $variation,
-            $url,
-            '.css',
-            $skip_filters
-        );
-        return $variation;
-    }
-
-
-    /**
-     * Takes care of enqueuing any necessary scripts or styles for the page.  A do_action() so message types using this
-     * messenger can add their own js.
-     *
-     * @return void.
-     */
-    public function enqueue_scripts_styles()
-    {
-        parent::enqueue_scripts_styles();
-        do_action('AHEE__EE_Html_messenger__enqueue_scripts_styles');
-    }
-
-
-    /**
-     * _set_template_fields
-     * This sets up the fields that a messenger requires for the message to go out.
-     *
-     * @access  protected
-     * @return void
-     */
-    protected function _set_template_fields()
-    {
-        // any extra template fields that are NOT used by the messenger
-        // but will get used by a messenger field for shortcode replacement
-        // get added to the 'extra' key in an associated array
-        // indexed by the messenger field they relate to.
-        // This is important for the Messages_admin to know what fields to display to the user.
-        // Also, notice that the "values" are equal to the field type
-        // that messages admin will use to know what kind of field to display.
-        // The values ALSO have one index labeled "shortcode".
-        // The values in that array indicate which ACTUAL SHORTCODE (i.e. [SHORTCODE])
-        // is required in order for this extra field to be displayed.
-        //  If the required shortcode isn't part of the shortcodes array
-        // then the field is not needed and will not be displayed/parsed.
-        $this->_template_fields = array(
-            'subject' => array(
-                'input' => 'text',
-                'label' => __('Page Title', 'event_espresso'),
-                'type' => 'string',
-                'required' => true,
-                'validation' => true,
-                'css_class' => 'large-text',
-                'format' => '%s',
-            ),
-            'content' => '',
-            // left empty b/c it is in the "extra array" but messenger still needs needs to know this is a field.
-            'extra' => array(
-                'content' => array(
-                    'main' => array(
-                        'input' => 'wp_editor',
-                        'label' => __('Main Content', 'event_espresso'),
-                        'type' => 'string',
-                        'required' => true,
-                        'validation' => true,
-                        'format' => '%s',
-                        'rows' => '15',
-                    ),
-                    'event_list' => array(
-                        'input' => 'wp_editor',
-                        'label' => '[EVENT_LIST]',
-                        'type' => 'string',
-                        'required' => true,
-                        'validation' => true,
-                        'format' => '%s',
-                        'rows' => '15',
-                        'shortcodes_required' => array('[EVENT_LIST]'),
-                    ),
-                    'ticket_list' => array(
-                        'input' => 'textarea',
-                        'label' => '[TICKET_LIST]',
-                        'type' => 'string',
-                        'required' => true,
-                        'validation' => true,
-                        'format' => '%s',
-                        'css_class' => 'large-text',
-                        'rows' => '10',
-                        'shortcodes_required' => array('[TICKET_LIST]'),
-                    ),
-                    'ticket_line_item_no_pms' => array(
-                        'input' => 'textarea',
-                        'label' => '[TICKET_LINE_ITEM_LIST] <br>' . __(
-                            'Ticket Line Item List with no Price Modifiers',
-                            'event_espresso'
-                        ),
-                        'type' => 'string',
-                        'required' => false,
-                        'validation' => true,
-                        'format' => '%s',
-                        'css_class' => 'large-text',
-                        'rows' => '5',
-                        'shortcodes_required' => array('[TICKET_LINE_ITEM_LIST]'),
-                    ),
-                    'ticket_line_item_pms' => array(
-                        'input' => 'textarea',
-                        'label' => '[TICKET_LINE_ITEM_LIST] <br>' . __(
-                            'Ticket Line Item List with Price Modifiers',
-                            'event_espresso'
-                        ),
-                        'type' => 'string',
-                        'required' => false,
-                        'validation' => true,
-                        'format' => '%s',
-                        'css_class' => 'large-text',
-                        'rows' => '5',
-                        'shortcodes_required' => array('[TICKET_LINE_ITEM_LIST]'),
-                    ),
-                    'price_modifier_line_item_list' => array(
-                        'input' => 'textarea',
-                        'label' => '[PRICE_MODIFIER_LINE_ITEM_LIST]',
-                        'type' => 'string',
-                        'required' => false,
-                        'validation' => true,
-                        'format' => '%s',
-                        'css_class' => 'large-text',
-                        'rows' => '5',
-                        'shortcodes_required' => array('[PRICE_MODIFIER_LINE_ITEM_LIST]'),
-                    ),
-                    'datetime_list' => array(
-                        'input' => 'textarea',
-                        'label' => '[DATETIME_LIST]',
-                        'type' => 'string',
-                        'required' => true,
-                        'validation' => true,
-                        'format' => '%s',
-                        'css_class' => 'large-text',
-                        'rows' => '5',
-                        'shortcodes_required' => array('[DATETIME_LIST]'),
-                    ),
-                    'attendee_list' => array(
-                        'input' => 'textarea',
-                        'label' => '[ATTENDEE_LIST]',
-                        'type' => 'string',
-                        'required' => true,
-                        'validation' => true,
-                        'format' => '%s',
-                        'css_class' => 'large-text',
-                        'rows' => '5',
-                        'shortcodes_required' => array('[ATTENDEE_LIST]'),
-                    ),
-                    'tax_line_item_list' => array(
-                        'input' => 'textarea',
-                        'label' => '[TAX_LINE_ITEM_LIST]',
-                        'type' => 'string',
-                        'required' => false,
-                        'validation' => true,
-                        'format' => '%s',
-                        'css_class' => 'large-text',
-                        'rows' => '5',
-                        'shortcodes_required' => array('[TAX_LINE_ITEM_LIST]'),
-                    ),
-                    'additional_line_item_list' => array(
-                        'input' => 'textarea',
-                        'label' => '[ADDITIONAL_LINE_ITEM_LIST]',
-                        'type' => 'string',
-                        'required' => false,
-                        'validation' => true,
-                        'format' => '%s',
-                        'css_class' => 'large-text',
-                        'rows' => '5',
-                        'shortcodes_required' => array('[ADDITIONAL_LINE_ITEM_LIST]'),
-                    ),
-                    'payment_list' => array(
-                        'input' => 'textarea',
-                        'label' => '[PAYMENT_LIST]',
-                        'type' => 'string',
-                        'required' => true,
-                        'validation' => true,
-                        'format' => '%s',
-                        'css_class' => 'large-text',
-                        'rows' => '5',
-                        'shortcodes_required' => array('[PAYMENT_LIST_*]'),
-                    ),
-                ),
-            ),
-        );
-    }
-
-
-    /**
-     * @see   definition of this method in parent
-     * @since 4.5.0
-     */
-    protected function _set_default_message_types()
-    {
-        $this->_default_message_types = array('receipt', 'invoice');
-    }
-
-
-    /**
-     * @see   definition of this method in parent
-     * @since 4.5.0
-     */
-    protected function _set_valid_message_types()
-    {
-        $this->_valid_message_types = array('receipt', 'invoice');
-    }
-
-
-    /**
-     * Displays the message in the browser.
-     *
-     * @since 4.5.0
-     * @return string.
-     */
-    protected function _send_message()
-    {
-        $this->_template_args = array(
-            'page_title' => $this->_subject,
-            'base_css' => $this->get_variation(
-                $this->_tmp_pack,
-                $this->_incoming_message_type->name,
-                true,
-                'base',
-                $this->_variation
-            ),
-            'print_css' => $this->get_variation(
-                $this->_tmp_pack,
-                $this->_incoming_message_type->name,
-                true,
-                'print',
-                $this->_variation
-            ),
-            'main_css' => $this->get_variation(
-                $this->_tmp_pack,
-                $this->_incoming_message_type->name,
-                true,
-                'main',
-                $this->_variation
-            ),
-            'main_body' => wpautop(
-                apply_filters(
-                    'FHEE__EE_Html_messenger___send_message__main_body',
-                    $this->_content,
-                    $this->_content,
-                    $this->_incoming_message_type
-                )
-            )
-        );
-        $this->_deregister_wp_hooks();
-        add_action('wp_enqueue_scripts', array($this, 'enqueue_scripts_styles'));
-        echo $this->_get_main_template();
-        exit();
-    }
-
-
-    /**
-     * The purpose of this function is to de register all actions hooked into wp_head and wp_footer so that it doesn't
-     * interfere with our templates.  If users want to add any custom styles or scripts they must use the
-     * AHEE__EE_Html_messenger__enqueue_scripts_styles hook.
-     *
-     * @since 4.5.0
-     * @return void
-     */
-    protected function _deregister_wp_hooks()
-    {
-        remove_all_actions('wp_head');
-        remove_all_actions('wp_footer');
-        remove_all_actions('wp_print_footer_scripts');
-        remove_all_actions('wp_enqueue_scripts');
-        global $wp_scripts, $wp_styles;
-        $wp_scripts = $wp_styles = array();
-        // just add back in wp_enqueue_scripts and wp_print_footer_scripts cause that's all we want to load.
-        add_action('wp_footer', 'wp_print_footer_scripts');
-        add_action('wp_print_footer_scripts', '_wp_footer_scripts');
-        add_action('wp_head', 'wp_enqueue_scripts');
-    }
-
-
-    /**
-     * Overwrite parent _get_main_template for display_html purposes.
-     *
-     * @since  4.5.0
-     * @param bool $preview
-     * @return string
-     */
-    protected function _get_main_template($preview = false)
-    {
-        $wrapper_template = $this->_tmp_pack->get_wrapper($this->name, 'main');
-        // include message type as a template arg
-        $this->_template_args['message_type'] = $this->_incoming_message_type;
-        return EEH_Template::display_template($wrapper_template, $this->_template_args, true);
-    }
-
-
-    /**
-     * @return string
-     */
-    protected function _preview()
-    {
-        return $this->_send_message();
-    }
-
-
-    protected function _set_admin_settings_fields()
-    {
-    }
-
-
-    /**
-     * add the "powered by EE" credit link to the HTML receipt and invoice
-     *
-     * @param string $content
-     * @param string $content_again
-     * @param \EE_message_type $incoming_message_type
-     * @return string
-     */
-    public function add_powered_by_credit_link_to_receipt_and_invoice(
-        $content = '',
-        $content_again = '',
-        EE_message_type $incoming_message_type
-    ) {
-        if (($incoming_message_type->name === 'invoice' || $incoming_message_type->name === 'receipt')
-            && apply_filters('FHEE_EE_Html_messenger__add_powered_by_credit_link_to_receipt_and_invoice', true)
-        ) {
-            $content .= \EEH_Template::powered_by_event_espresso(
-                'aln-cntr',
-                '',
-                array('utm_content' => 'messages_system')
-            )
-                . EEH_HTML::div(EEH_HTML::p('&nbsp;'));
-        }
-        return $content;
-    }
+	/**
+	 * The following are the properties that this messenger requires for displaying the html
+	 */
+	/**
+	 * This is the html body generated by the template via the message type.
+	 *
+	 * @var string
+	 */
+	protected $_content;
+
+
+	/**
+	 * This is for the page title that gets displayed.  (Why use "subject"?  Because the "title" tag in html is
+	 * equivalent to the "subject" of the page.
+	 *
+	 * @var string
+	 */
+	protected $_subject;
+
+
+	/**
+	 * EE_Html_messenger constructor.
+	 */
+	public function __construct()
+	{
+		// set properties
+		$this->name = 'html';
+		$this->description = __('This messenger outputs a message to a browser for display.', 'event_espresso');
+		$this->label = array(
+			'singular' => __('html', 'event_espresso'),
+			'plural' => __('html', 'event_espresso'),
+		);
+		$this->activate_on_install = true;
+		// add the "powered by EE" credit link to the HTML receipt and invoice
+		add_filter(
+			'FHEE__EE_Html_messenger___send_message__main_body',
+			array($this, 'add_powered_by_credit_link_to_receipt_and_invoice'),
+			10,
+			3
+		);
+		parent::__construct();
+	}
+
+
+	/**
+	 * HTML Messenger desires execution immediately.
+	 *
+	 * @see    parent::send_now() for documentation.
+	 * @since  4.9.0
+	 * @return bool
+	 */
+	public function send_now()
+	{
+		return true;
+	}
+
+
+	/**
+	 * HTML Messenger allows an empty to field.
+	 *
+	 * @see    parent::allow_empty_to_field() for documentation
+	 * @since  4.9.0
+	 * @return bool
+	 */
+	public function allow_empty_to_field()
+	{
+		return true;
+	}
+
+
+	/**
+	 * @see abstract declaration in EE_messenger for details.
+	 */
+	protected function _set_admin_pages()
+	{
+		$this->admin_registered_pages = array('events_edit' => true);
+	}
+
+
+	/**
+	 * @see abstract declaration in EE_messenger for details.
+	 */
+	protected function _set_valid_shortcodes()
+	{
+		$this->_valid_shortcodes = array();
+	}
+
+
+	/**
+	 * @see abstract declaration in EE_messenger for details.
+	 */
+	protected function _set_validator_config()
+	{
+		$this->_validator_config = array(
+			'subject' => array(
+				'shortcodes' => array('organization', 'primary_registration_details', 'email', 'transaction'),
+			),
+			'content' => array(
+				'shortcodes' => array(
+					'organization',
+					'primary_registration_list',
+					'primary_registration_details',
+					'email',
+					'transaction',
+					'event_list',
+					'payment_list',
+					'venue',
+					'line_item_list',
+					'messenger',
+					'ticket_list',
+				),
+			),
+			'event_list' => array(
+				'shortcodes' => array(
+					'event',
+					'ticket_list',
+					'venue',
+					'primary_registration_details',
+					'primary_registration_list',
+					'event_author',
+				),
+				'required' => array('[EVENT_LIST]'),
+			),
+			'ticket_list' => array(
+				'shortcodes' => array(
+					'attendee_list',
+					'ticket',
+					'datetime_list',
+					'primary_registration_details',
+					'line_item_list',
+					'venue',
+				),
+				'required' => array('[TICKET_LIST]'),
+			),
+			'ticket_line_item_no_pms' => array(
+				'shortcodes' => array('line_item', 'ticket'),
+				'required' => array('[TICKET_LINE_ITEM_LIST]'),
+			),
+			'ticket_line_item_pms' => array(
+				'shortcodes' => array('line_item', 'ticket', 'line_item_list'),
+				'required' => array('[TICKET_LINE_ITEM_LIST]'),
+			),
+			'price_modifier_line_item_list' => array(
+				'shortcodes' => array('line_item'),
+				'required' => array('[PRICE_MODIFIER_LINE_ITEM_LIST]'),
+			),
+			'datetime_list' => array(
+				'shortcodes' => array('datetime'),
+				'required' => array('[DATETIME_LIST]'),
+			),
+			'attendee_list' => array(
+				'shortcodes' => array('attendee'),
+				'required' => array('[ATTENDEE_LIST]'),
+			),
+			'tax_line_item_list' => array(
+				'shortcodes' => array('line_item'),
+				'required' => array('[TAX_LINE_ITEM_LIST]'),
+			),
+			'additional_line_item_list' => array(
+				'shortcodes' => array('line_item'),
+				'required' => array('[ADDITIONAL_LINE_ITEM_LIST]'),
+			),
+			'payment_list' => array(
+				'shortcodes' => array('payment'),
+				'required' => array('[PAYMENT_LIST_*]'),
+			),
+		);
+	}
+
+
+	/**
+	 * This is a method called from EE_messages when this messenger is a generating messenger and the sending messenger
+	 * is a different messenger.  Child messengers can set hooks for the sending messenger to callback on if necessary
+	 * (i.e. swap out css files or something else).
+	 *
+	 * @since 4.5.0
+	 * @param string $sending_messenger_name the name of the sending messenger so we only set the hooks needed.
+	 * @return void
+	 */
+	public function do_secondary_messenger_hooks($sending_messenger_name)
+	{
+		if ($sending_messenger_name === 'pdf') {
+			add_filter('EE_messenger__get_variation__variation', array($this, 'add_html_css'), 10, 8);
+		}
+	}
+
+
+	/**
+	 * @param                            $variation_path
+	 * @param \EE_Messages_Template_Pack $template_pack
+	 * @param                            $messenger_name
+	 * @param                            $message_type_name
+	 * @param                            $url
+	 * @param                            $type
+	 * @param                            $variation
+	 * @param                            $skip_filters
+	 * @return string
+	 */
+	public function add_html_css(
+		$variation_path,
+		EE_Messages_Template_Pack $template_pack,
+		$messenger_name,
+		$message_type_name,
+		$url,
+		$type,
+		$variation,
+		$skip_filters
+	) {
+		$variation = $template_pack->get_variation(
+			$this->name,
+			$message_type_name,
+			$type,
+			$variation,
+			$url,
+			'.css',
+			$skip_filters
+		);
+		return $variation;
+	}
+
+
+	/**
+	 * Takes care of enqueuing any necessary scripts or styles for the page.  A do_action() so message types using this
+	 * messenger can add their own js.
+	 *
+	 * @return void.
+	 */
+	public function enqueue_scripts_styles()
+	{
+		parent::enqueue_scripts_styles();
+		do_action('AHEE__EE_Html_messenger__enqueue_scripts_styles');
+	}
+
+
+	/**
+	 * _set_template_fields
+	 * This sets up the fields that a messenger requires for the message to go out.
+	 *
+	 * @access  protected
+	 * @return void
+	 */
+	protected function _set_template_fields()
+	{
+		// any extra template fields that are NOT used by the messenger
+		// but will get used by a messenger field for shortcode replacement
+		// get added to the 'extra' key in an associated array
+		// indexed by the messenger field they relate to.
+		// This is important for the Messages_admin to know what fields to display to the user.
+		// Also, notice that the "values" are equal to the field type
+		// that messages admin will use to know what kind of field to display.
+		// The values ALSO have one index labeled "shortcode".
+		// The values in that array indicate which ACTUAL SHORTCODE (i.e. [SHORTCODE])
+		// is required in order for this extra field to be displayed.
+		//  If the required shortcode isn't part of the shortcodes array
+		// then the field is not needed and will not be displayed/parsed.
+		$this->_template_fields = array(
+			'subject' => array(
+				'input' => 'text',
+				'label' => __('Page Title', 'event_espresso'),
+				'type' => 'string',
+				'required' => true,
+				'validation' => true,
+				'css_class' => 'large-text',
+				'format' => '%s',
+			),
+			'content' => '',
+			// left empty b/c it is in the "extra array" but messenger still needs needs to know this is a field.
+			'extra' => array(
+				'content' => array(
+					'main' => array(
+						'input' => 'wp_editor',
+						'label' => __('Main Content', 'event_espresso'),
+						'type' => 'string',
+						'required' => true,
+						'validation' => true,
+						'format' => '%s',
+						'rows' => '15',
+					),
+					'event_list' => array(
+						'input' => 'wp_editor',
+						'label' => '[EVENT_LIST]',
+						'type' => 'string',
+						'required' => true,
+						'validation' => true,
+						'format' => '%s',
+						'rows' => '15',
+						'shortcodes_required' => array('[EVENT_LIST]'),
+					),
+					'ticket_list' => array(
+						'input' => 'textarea',
+						'label' => '[TICKET_LIST]',
+						'type' => 'string',
+						'required' => true,
+						'validation' => true,
+						'format' => '%s',
+						'css_class' => 'large-text',
+						'rows' => '10',
+						'shortcodes_required' => array('[TICKET_LIST]'),
+					),
+					'ticket_line_item_no_pms' => array(
+						'input' => 'textarea',
+						'label' => '[TICKET_LINE_ITEM_LIST] <br>' . __(
+							'Ticket Line Item List with no Price Modifiers',
+							'event_espresso'
+						),
+						'type' => 'string',
+						'required' => false,
+						'validation' => true,
+						'format' => '%s',
+						'css_class' => 'large-text',
+						'rows' => '5',
+						'shortcodes_required' => array('[TICKET_LINE_ITEM_LIST]'),
+					),
+					'ticket_line_item_pms' => array(
+						'input' => 'textarea',
+						'label' => '[TICKET_LINE_ITEM_LIST] <br>' . __(
+							'Ticket Line Item List with Price Modifiers',
+							'event_espresso'
+						),
+						'type' => 'string',
+						'required' => false,
+						'validation' => true,
+						'format' => '%s',
+						'css_class' => 'large-text',
+						'rows' => '5',
+						'shortcodes_required' => array('[TICKET_LINE_ITEM_LIST]'),
+					),
+					'price_modifier_line_item_list' => array(
+						'input' => 'textarea',
+						'label' => '[PRICE_MODIFIER_LINE_ITEM_LIST]',
+						'type' => 'string',
+						'required' => false,
+						'validation' => true,
+						'format' => '%s',
+						'css_class' => 'large-text',
+						'rows' => '5',
+						'shortcodes_required' => array('[PRICE_MODIFIER_LINE_ITEM_LIST]'),
+					),
+					'datetime_list' => array(
+						'input' => 'textarea',
+						'label' => '[DATETIME_LIST]',
+						'type' => 'string',
+						'required' => true,
+						'validation' => true,
+						'format' => '%s',
+						'css_class' => 'large-text',
+						'rows' => '5',
+						'shortcodes_required' => array('[DATETIME_LIST]'),
+					),
+					'attendee_list' => array(
+						'input' => 'textarea',
+						'label' => '[ATTENDEE_LIST]',
+						'type' => 'string',
+						'required' => true,
+						'validation' => true,
+						'format' => '%s',
+						'css_class' => 'large-text',
+						'rows' => '5',
+						'shortcodes_required' => array('[ATTENDEE_LIST]'),
+					),
+					'tax_line_item_list' => array(
+						'input' => 'textarea',
+						'label' => '[TAX_LINE_ITEM_LIST]',
+						'type' => 'string',
+						'required' => false,
+						'validation' => true,
+						'format' => '%s',
+						'css_class' => 'large-text',
+						'rows' => '5',
+						'shortcodes_required' => array('[TAX_LINE_ITEM_LIST]'),
+					),
+					'additional_line_item_list' => array(
+						'input' => 'textarea',
+						'label' => '[ADDITIONAL_LINE_ITEM_LIST]',
+						'type' => 'string',
+						'required' => false,
+						'validation' => true,
+						'format' => '%s',
+						'css_class' => 'large-text',
+						'rows' => '5',
+						'shortcodes_required' => array('[ADDITIONAL_LINE_ITEM_LIST]'),
+					),
+					'payment_list' => array(
+						'input' => 'textarea',
+						'label' => '[PAYMENT_LIST]',
+						'type' => 'string',
+						'required' => true,
+						'validation' => true,
+						'format' => '%s',
+						'css_class' => 'large-text',
+						'rows' => '5',
+						'shortcodes_required' => array('[PAYMENT_LIST_*]'),
+					),
+				),
+			),
+		);
+	}
+
+
+	/**
+	 * @see   definition of this method in parent
+	 * @since 4.5.0
+	 */
+	protected function _set_default_message_types()
+	{
+		$this->_default_message_types = array('receipt', 'invoice');
+	}
+
+
+	/**
+	 * @see   definition of this method in parent
+	 * @since 4.5.0
+	 */
+	protected function _set_valid_message_types()
+	{
+		$this->_valid_message_types = array('receipt', 'invoice');
+	}
+
+
+	/**
+	 * Displays the message in the browser.
+	 *
+	 * @since 4.5.0
+	 * @return string.
+	 */
+	protected function _send_message()
+	{
+		$this->_template_args = array(
+			'page_title' => $this->_subject,
+			'base_css' => $this->get_variation(
+				$this->_tmp_pack,
+				$this->_incoming_message_type->name,
+				true,
+				'base',
+				$this->_variation
+			),
+			'print_css' => $this->get_variation(
+				$this->_tmp_pack,
+				$this->_incoming_message_type->name,
+				true,
+				'print',
+				$this->_variation
+			),
+			'main_css' => $this->get_variation(
+				$this->_tmp_pack,
+				$this->_incoming_message_type->name,
+				true,
+				'main',
+				$this->_variation
+			),
+			'main_body' => wpautop(
+				apply_filters(
+					'FHEE__EE_Html_messenger___send_message__main_body',
+					$this->_content,
+					$this->_content,
+					$this->_incoming_message_type
+				)
+			)
+		);
+		$this->_deregister_wp_hooks();
+		add_action('wp_enqueue_scripts', array($this, 'enqueue_scripts_styles'));
+		echo $this->_get_main_template();
+		exit();
+	}
+
+
+	/**
+	 * The purpose of this function is to de register all actions hooked into wp_head and wp_footer so that it doesn't
+	 * interfere with our templates.  If users want to add any custom styles or scripts they must use the
+	 * AHEE__EE_Html_messenger__enqueue_scripts_styles hook.
+	 *
+	 * @since 4.5.0
+	 * @return void
+	 */
+	protected function _deregister_wp_hooks()
+	{
+		remove_all_actions('wp_head');
+		remove_all_actions('wp_footer');
+		remove_all_actions('wp_print_footer_scripts');
+		remove_all_actions('wp_enqueue_scripts');
+		global $wp_scripts, $wp_styles;
+		$wp_scripts = $wp_styles = array();
+		// just add back in wp_enqueue_scripts and wp_print_footer_scripts cause that's all we want to load.
+		add_action('wp_footer', 'wp_print_footer_scripts');
+		add_action('wp_print_footer_scripts', '_wp_footer_scripts');
+		add_action('wp_head', 'wp_enqueue_scripts');
+	}
+
+
+	/**
+	 * Overwrite parent _get_main_template for display_html purposes.
+	 *
+	 * @since  4.5.0
+	 * @param bool $preview
+	 * @return string
+	 */
+	protected function _get_main_template($preview = false)
+	{
+		$wrapper_template = $this->_tmp_pack->get_wrapper($this->name, 'main');
+		// include message type as a template arg
+		$this->_template_args['message_type'] = $this->_incoming_message_type;
+		return EEH_Template::display_template($wrapper_template, $this->_template_args, true);
+	}
+
+
+	/**
+	 * @return string
+	 */
+	protected function _preview()
+	{
+		return $this->_send_message();
+	}
+
+
+	protected function _set_admin_settings_fields()
+	{
+	}
+
+
+	/**
+	 * add the "powered by EE" credit link to the HTML receipt and invoice
+	 *
+	 * @param string $content
+	 * @param string $content_again
+	 * @param \EE_message_type $incoming_message_type
+	 * @return string
+	 */
+	public function add_powered_by_credit_link_to_receipt_and_invoice(
+		$content = '',
+		$content_again = '',
+		EE_message_type $incoming_message_type
+	) {
+		if (($incoming_message_type->name === 'invoice' || $incoming_message_type->name === 'receipt')
+			&& apply_filters('FHEE_EE_Html_messenger__add_powered_by_credit_link_to_receipt_and_invoice', true)
+		) {
+			$content .= \EEH_Template::powered_by_event_espresso(
+				'aln-cntr',
+				'',
+				array('utm_content' => 'messages_system')
+			)
+				. EEH_HTML::div(EEH_HTML::p('&nbsp;'));
+		}
+		return $content;
+	}
 }