eventespresso / event-espresso-core

admin_pages/transactions/EE_Admin_Transactions_List_Table.class.php

Doc Comments +2 added lines, -2 removed lines

@@ -102,7 +102,7 @@ 
      *
      * @abstract
      * @access protected
-     * @return array
+     * @return string[]
      */
     protected function _get_table_filters()
     {
@@ -265,7 +265,7 @@ 
      *    column_TXN_paid
      *
      * @param \EE_Transaction $transaction
-     * @return mixed|string
+     * @return string
      * @throws \EE_Error
      */
     public function column_TXN_paid(EE_Transaction $transaction)

Indentation +606 added lines, -606 removed lines

@@ -13,114 +13,114 @@ 
 class EE_Admin_Transactions_List_Table extends EE_Admin_List_Table
 {
 
-    private $_status;
-
-
-    /**
-     * @param \Transactions_Admin_Page $admin_page
-     */
-    public function __construct(\Transactions_Admin_Page $admin_page)
-    {
-        parent::__construct($admin_page);
-        $this->_status = $this->_admin_page->get_transaction_status_array();
-    }
-
-
-    /**
-     *_setup_data
-     */
-    protected function _setup_data()
-    {
-        $this->_data           = $this->_admin_page->get_transactions($this->_per_page);
-        $status                = ! empty($this->_req_data['status']) ? $this->_req_data['status'] : 'all';
-        $this->_all_data_count = $this->_admin_page->get_transactions($this->_per_page, true, $status);
-    }
-
-
-    /**
-     *_set_properties
-     */
-    protected function _set_properties()
-    {
-        $this->_wp_list_args = array(
-            'singular' => __('transaction', 'event_espresso'),
-            'plural'   => __('transactions', 'event_espresso'),
-            'ajax'     => true,
-            'screen'   => $this->_admin_page->get_current_screen()->id,
-        );
-        $ID_column_name      = __('ID', 'event_espresso');
-        $ID_column_name      .= ' : <span class="show-on-mobile-view-only" style="float:none">';
-        $ID_column_name      .= __('Transaction Date', 'event_espresso');
-        $ID_column_name      .= '</span> ';
-        $this->_columns      = array(
-            'TXN_ID'        => $ID_column_name,
-            'TXN_timestamp' => __('Transaction Date', 'event_espresso'),
-            'TXN_total'     => __('Total', 'event_espresso'),
-            'TXN_paid'      => __('Paid', 'event_espresso'),
-            'ATT_fname'     => __('Primary Registrant', 'event_espresso'),
-            'event_name'    => __('Event', 'event_espresso'),
-            'actions'       => __('Actions', 'event_espresso'),
-        );
-
-        $this->_sortable_columns = array(
-            'TXN_ID'        => array('TXN_ID' => false),
-            'event_name'    => array('event_name' => false),
-            'ATT_fname'     => array('ATT_fname' => false),
-            'TXN_timestamp' => array('TXN_timestamp' => true) //true means its already sorted
-        );
-
-        $this->_primary_column = 'TXN_ID';
-
-        $this->_hidden_columns = array();
-    }
-
-
-    /**
-     * This simply sets up the row class for the table rows.
-     * Allows for easier overriding of child methods for setting up sorting.
-     *
-     * @param  EE_Transaction $transaction the current item
-     * @return string
-     * @throws \EE_Error
-     */
-    protected function _get_row_class($transaction)
-    {
-        $class = parent::_get_row_class($transaction);
-        //add status class
-        $class .= ' ee-status-strip txn-status-' . $transaction->status_ID();
-        if ($this->_has_checkbox_column) {
-            $class .= ' has-checkbox-column';
-        }
-        return $class;
-    }
-
-
-    /**
-     * _get_table_filters
-     * We use this to assemble and return any filters that are associated with this table that help further refine what
-     * get's shown in the table.
-     *
-     * @abstract
-     * @access protected
-     * @return array
-     */
-    protected function _get_table_filters()
-    {
-        $filters    = array();
-        $start_date = isset($this->_req_data['txn-filter-start-date'])
-            ? wp_strip_all_tags($this->_req_data['txn-filter-start-date'])
-            : date(
-                'm/d/Y',
-                strtotime('-10 year')
-            );
-        $end_date   = isset($this->_req_data['txn-filter-end-date'])
-            ? wp_strip_all_tags($this->_req_data['txn-filter-end-date'])
-            : date(
-                'm/d/Y',
-                current_time('timestamp')
-            );
-        ob_start();
-        ?>
+	private $_status;
+
+
+	/**
+	 * @param \Transactions_Admin_Page $admin_page
+	 */
+	public function __construct(\Transactions_Admin_Page $admin_page)
+	{
+		parent::__construct($admin_page);
+		$this->_status = $this->_admin_page->get_transaction_status_array();
+	}
+
+
+	/**
+	 *_setup_data
+	 */
+	protected function _setup_data()
+	{
+		$this->_data           = $this->_admin_page->get_transactions($this->_per_page);
+		$status                = ! empty($this->_req_data['status']) ? $this->_req_data['status'] : 'all';
+		$this->_all_data_count = $this->_admin_page->get_transactions($this->_per_page, true, $status);
+	}
+
+
+	/**
+	 *_set_properties
+	 */
+	protected function _set_properties()
+	{
+		$this->_wp_list_args = array(
+			'singular' => __('transaction', 'event_espresso'),
+			'plural'   => __('transactions', 'event_espresso'),
+			'ajax'     => true,
+			'screen'   => $this->_admin_page->get_current_screen()->id,
+		);
+		$ID_column_name      = __('ID', 'event_espresso');
+		$ID_column_name      .= ' : <span class="show-on-mobile-view-only" style="float:none">';
+		$ID_column_name      .= __('Transaction Date', 'event_espresso');
+		$ID_column_name      .= '</span> ';
+		$this->_columns      = array(
+			'TXN_ID'        => $ID_column_name,
+			'TXN_timestamp' => __('Transaction Date', 'event_espresso'),
+			'TXN_total'     => __('Total', 'event_espresso'),
+			'TXN_paid'      => __('Paid', 'event_espresso'),
+			'ATT_fname'     => __('Primary Registrant', 'event_espresso'),
+			'event_name'    => __('Event', 'event_espresso'),
+			'actions'       => __('Actions', 'event_espresso'),
+		);
+
+		$this->_sortable_columns = array(
+			'TXN_ID'        => array('TXN_ID' => false),
+			'event_name'    => array('event_name' => false),
+			'ATT_fname'     => array('ATT_fname' => false),
+			'TXN_timestamp' => array('TXN_timestamp' => true) //true means its already sorted
+		);
+
+		$this->_primary_column = 'TXN_ID';
+
+		$this->_hidden_columns = array();
+	}
+
+
+	/**
+	 * This simply sets up the row class for the table rows.
+	 * Allows for easier overriding of child methods for setting up sorting.
+	 *
+	 * @param  EE_Transaction $transaction the current item
+	 * @return string
+	 * @throws \EE_Error
+	 */
+	protected function _get_row_class($transaction)
+	{
+		$class = parent::_get_row_class($transaction);
+		//add status class
+		$class .= ' ee-status-strip txn-status-' . $transaction->status_ID();
+		if ($this->_has_checkbox_column) {
+			$class .= ' has-checkbox-column';
+		}
+		return $class;
+	}
+
+
+	/**
+	 * _get_table_filters
+	 * We use this to assemble and return any filters that are associated with this table that help further refine what
+	 * get's shown in the table.
+	 *
+	 * @abstract
+	 * @access protected
+	 * @return array
+	 */
+	protected function _get_table_filters()
+	{
+		$filters    = array();
+		$start_date = isset($this->_req_data['txn-filter-start-date'])
+			? wp_strip_all_tags($this->_req_data['txn-filter-start-date'])
+			: date(
+				'm/d/Y',
+				strtotime('-10 year')
+			);
+		$end_date   = isset($this->_req_data['txn-filter-end-date'])
+			? wp_strip_all_tags($this->_req_data['txn-filter-end-date'])
+			: date(
+				'm/d/Y',
+				current_time('timestamp')
+			);
+		ob_start();
+		?>
         <label for="txn-filter-start-date">Display Transactions from </label>
         <input id="txn-filter-start-date" class="datepicker" type="text" value="<?php echo $start_date; ?>"
                name="txn-filter-start-date" size="15"/>
@@ -128,534 +128,534 @@ 
         <input id="txn-filter-end-date" class="datepicker" type="text" value="<?php echo $end_date; ?>"
                name="txn-filter-end-date" size="15"/>
         <?php
-        $filters[] = ob_get_contents();
-        ob_end_clean();
-        return $filters;
-    }
-
-
-    /**
-     *_add_view_counts
-     */
-    protected function _add_view_counts()
-    {
-        $this->_views['all']['count']       = $this->_admin_page->get_transactions($this->_per_page, true, 'all');
-        $this->_views['abandoned']['count'] = $this->_admin_page->get_transactions($this->_per_page, true, 'abandoned');
-        $this->_views['failed']['count']    = $this->_admin_page->get_transactions($this->_per_page, true, 'failed');
-    }
-
-
-    /**
-     *    column TXN_ID
-     *
-     * @param \EE_Transaction $transaction
-     * @return string
-     * @throws \EE_Error
-     */
-    public function column_TXN_ID(EE_Transaction $transaction)
-    {
-        $view_lnk_url = EE_Admin_Page::add_query_args_and_nonce(array(
-            'action' => 'view_transaction',
-            'TXN_ID' => $transaction->ID(),
-        ), TXN_ADMIN_URL);
-        $content      = '<a href="' . $view_lnk_url . '"'
-                        . ' title="' . esc_attr__('Go to Transaction Details', 'event_espresso') . '">'
-                        . $transaction->ID()
-                        . '</a>';
-
-        //txn timestamp
-        $content .= '  <span class="show-on-mobile-view-only">' . $this->_get_txn_timestamp($transaction) . '</span>';
-        return $content;
-    }
-
-
-    /**
-     * @param \EE_Transaction $transaction
-     * @return string
-     * @throws \EE_Error
-     */
-    protected function _get_txn_timestamp(EE_Transaction $transaction)
-    {
-        //txn timestamp
-        // is TXN less than 2 hours old ?
-        if (($transaction->failed() || $transaction->is_abandoned())
-            && (
-                (time() - EE_Registry::instance()->SSN->lifespan()) < $transaction->datetime(false, true)
-            )
-        ) {
-            $timestamp = esc_html__('TXN in progress...', 'event_espresso');
-        } else {
-            $timestamp = $transaction->get_i18n_datetime('TXN_timestamp');
-        }
-        return $timestamp;
-    }
-
-
-    /**
-     *    column_cb
-     *
-     * @param \EE_Transaction $transaction
-     * @return string
-     * @throws \EE_Error
-     */
-    public function column_cb($transaction)
-    {
-        return sprintf(
-            '<input type="checkbox" name="%1$s[]" value="%2$s" />',
-            $this->_wp_list_args['singular'],
-            $transaction->ID()
-        );
-    }
-
-
-    /**
-     *    column_TXN_timestamp
-     *
-     * @param \EE_Transaction $transaction
-     * @return string
-     * @throws \EE_Error
-     */
-    public function column_TXN_timestamp(EE_Transaction $transaction)
-    {
-        $view_lnk_url = EE_Admin_Page::add_query_args_and_nonce(array(
-            'action' => 'view_transaction',
-            'TXN_ID' => $transaction->ID(),
-        ), TXN_ADMIN_URL);
-        $txn_date     = '<a href="' . $view_lnk_url . '"'
-                        . ' title="'
-                        . esc_attr__('View Transaction Details for TXN #', 'event_espresso') . $transaction->ID() . '">'
-                        . $this->_get_txn_timestamp($transaction)
-                        . '</a>';
-        //status
-        $txn_date .= '<br><span class="ee-status-text-small">'
-                     . EEH_Template::pretty_status(
-                         $transaction->status_ID(),
-                         false,
-                         'sentence'
-                     )
-                     . '</span>';
-        return $txn_date;
-    }
-
-
-    /**
-     *    column_TXN_total
-     *
-     * @param \EE_Transaction $transaction
-     * @return string
-     * @throws \EE_Error
-     */
-    public function column_TXN_total(EE_Transaction $transaction)
-    {
-        if ($transaction->get('TXN_total') > 0) {
-            return '<span class="txn-pad-rght">'
-                   . apply_filters(
-                       'FHEE__EE_Admin_Transactions_List_Table__column_TXN_total__TXN_total',
-                       $transaction->get_pretty('TXN_total'),
-                       $transaction
-                   )
-                   . '</span>';
-        } else {
-            return '<span class="txn-overview-free-event-spn">' . esc_html__('free', 'event_espresso') . '</span>';
-        }
-    }
-
-
-    /**
-     *    column_TXN_paid
-     *
-     * @param \EE_Transaction $transaction
-     * @return mixed|string
-     * @throws \EE_Error
-     */
-    public function column_TXN_paid(EE_Transaction $transaction)
-    {
-        $transaction_total = $transaction->get('TXN_total');
-        $transaction_paid  = $transaction->get('TXN_paid');
-
-        if (\EEH_Money::compare_floats($transaction_total, 0, '>')) {
-            // monies owing
-            $span_class = 'txn-overview-part-payment-spn';
-            if (\EEH_Money::compare_floats($transaction_paid, $transaction_total, '>=')) {
-                // paid in full
-                $span_class = 'txn-overview-full-payment-spn';
-            } elseif (\EEH_Money::compare_floats($transaction_paid, 0, '==')) {
-                // no payments made
-                $span_class = 'txn-overview-no-payment-spn';
-            }
-        } else {
-            $span_class       = 'txn-overview-free-event-spn';
-            $transaction_paid = 0;
-        }
-
-        $payment_method      = $transaction->payment_method();
-        $payment_method_name = $payment_method instanceof EE_Payment_Method
-            ? $payment_method->admin_name()
-            : esc_html__('Unknown', 'event_espresso');
-        $transaction_paid_content = $transaction_paid !== 0 ? $transaction->get_pretty('TXN_paid') : $transaction_paid;
-
-        $content = '<span class="' . $span_class . ' txn-pad-rght">'
-                   . $transaction_paid_content
-                   . '</span>';
-        if ($transaction_paid > 0) {
-            $content .= '<br><span class="ee-status-text-small">'
-                        . sprintf(
-                            esc_html__('...via %s', 'event_espresso'),
-                            $payment_method_name
-                        )
-                        . '</span>';
-        }
-        return $content;
-    }
-
-
-    /**
-     *    column_ATT_fname
-     *
-     * @param \EE_Transaction $transaction
-     * @return string
-     * @throws \EE_Error
-     */
-    public function column_ATT_fname(EE_Transaction $transaction)
-    {
-        $primary_reg = $transaction->primary_registration();
-        $attendee    = $primary_reg->get_first_related('Attendee');
-        if ($attendee instanceof EE_Attendee) {
-            $edit_lnk_url = EE_Admin_Page::add_query_args_and_nonce(array(
-                'action'  => 'view_registration',
-                '_REG_ID' => $primary_reg->ID(),
-            ), REG_ADMIN_URL);
-            $content      = EE_Registry::instance()->CAP->current_user_can(
-                'ee_read_registration',
-                'espresso_registrations_view_registration',
-                $primary_reg->ID()
-            )
-                ? '<a href="' . $edit_lnk_url . '"'
-                    . ' title="' . esc_attr__('View Registration Details', 'event_espresso') . '">'
-                    . $attendee->full_name()
-                    . '</a>'
-                : $attendee->full_name();
-            $content      .= '<br>' . $attendee->email();
-            return $content;
-        }
-        return $transaction->failed() || $transaction->is_abandoned()
-            ? esc_html__('no contact record.', 'event_espresso')
-            : esc_html__(
-                'No contact record, because the transaction was abandoned or the registration process failed.',
-                'event_espresso'
-            );
-    }
-
-
-    /**
-     *    column_ATT_email
-     *
-     * @param \EE_Transaction $transaction
-     * @return string
-     * @throws \EE_Error
-     */
-    public function column_ATT_email(EE_Transaction $transaction)
-    {
-        $attendee = $transaction->primary_registration()->get_first_related('Attendee');
-        if (! empty($attendee)) {
-            return '<a href="mailto:' . $attendee->get('ATT_email') . '">'
-                   . $attendee->get('ATT_email')
-                   . '</a>';
-        } else {
-            return $transaction->failed() || $transaction->is_abandoned()
-                ? esc_html__('no contact record.', 'event_espresso')
-                : esc_html__(
-                    'No contact record, because the transaction was abandoned or the registration process failed.',
-                    'event_espresso'
-                );
-        }
-    }
-
-
-    /**
-     *    column_event_name
-     *
-     * @param \EE_Transaction $transaction
-     * @return string
-     * @throws \EE_Error
-     */
-    public function column_event_name(EE_Transaction $transaction)
-    {
-        $actions = array();
-        $event   = $transaction->primary_registration()->get_first_related('Event');
-        if (! empty($event)) {
-            $edit_event_url = EE_Admin_Page::add_query_args_and_nonce(
-                array('action' => 'edit', 'post' => $event->ID()),
-                EVENTS_ADMIN_URL
-            );
-            $event_name     = $event->get('EVT_name');
-
-            //filter this view by transactions for this event
-            $txn_by_event_lnk = EE_Admin_Page::add_query_args_and_nonce(array(
-                'action' => 'default',
-                'EVT_ID' => $event->ID(),
-            ));
-            if (EE_Registry::instance()->CAP->current_user_can(
-                'ee_edit_event',
-                'espresso_events_edit',
-                $event->ID()
-            )) {
-                $actions['filter_by_event'] = '<a href="' . $txn_by_event_lnk . '"'
-                        . ' title="' . esc_attr__('Filter transactions by this event', 'event_espresso') . '">'
-                        . esc_html__('View Transactions for this event', 'event_espresso')
-                        . '</a>';
-            }
-
-            return sprintf(
-                '%1$s %2$s',
-                EE_Registry::instance()->CAP->current_user_can(
-                    'ee_edit_event',
-                    'espresso_events_edit',
-                    $event->ID()
-                )
-                    ? '<a href="' . $edit_event_url . '"'
-                        . ' title="'
-                        . sprintf(
-                            esc_attr__('Edit Event: %s', 'event_espresso'),
-                            $event->get('EVT_name')
-                        )
-                        . '">'
-                        . wp_trim_words(
-                            $event_name,
-                            30,
-                            '...'
-                        )
-                        . '</a>'
-                        : wp_trim_words($event_name, 30, '...'),
-                $this->row_actions($actions)
-            );
-        } else {
-            return esc_html__(
-                'The event associated with this transaction via the primary registration cannot be retrieved.',
-                'event_espresso'
-            );
-        }
-    }
-
-
-    /**
-     *    column_actions
-     *
-     * @param \EE_Transaction $transaction
-     * @return string
-     * @throws \EE_Error
-     */
-    public function column_actions(EE_Transaction $transaction)
-    {
-        return $this->_action_string(
-            $this->get_transaction_details_link($transaction)
-            . $this->get_invoice_link($transaction)
-            . $this->get_receipt_link($transaction)
-            . $this->get_primary_registration_details_link($transaction)
-            . $this->get_send_payment_reminder_trigger_link($transaction)
-            . $this->get_payment_overview_link($transaction)
-            . $this->get_related_messages_link($transaction),
-            $transaction,
-            'ul',
-            'txn-overview-actions-ul'
-        );
-    }
-
-
-    /**
-     * Get the transaction details link.
-     * @param EE_Transaction $transaction
-     * @return string
-     * @throws EE_Error
-     */
-    protected function get_transaction_details_link(EE_Transaction $transaction)
-    {
-        $url          = EE_Admin_Page::add_query_args_and_nonce(array(
-            'action' => 'view_transaction',
-            'TXN_ID' => $transaction->ID(),
-        ), TXN_ADMIN_URL);
-        return '
+		$filters[] = ob_get_contents();
+		ob_end_clean();
+		return $filters;
+	}
+
+
+	/**
+	 *_add_view_counts
+	 */
+	protected function _add_view_counts()
+	{
+		$this->_views['all']['count']       = $this->_admin_page->get_transactions($this->_per_page, true, 'all');
+		$this->_views['abandoned']['count'] = $this->_admin_page->get_transactions($this->_per_page, true, 'abandoned');
+		$this->_views['failed']['count']    = $this->_admin_page->get_transactions($this->_per_page, true, 'failed');
+	}
+
+
+	/**
+	 *    column TXN_ID
+	 *
+	 * @param \EE_Transaction $transaction
+	 * @return string
+	 * @throws \EE_Error
+	 */
+	public function column_TXN_ID(EE_Transaction $transaction)
+	{
+		$view_lnk_url = EE_Admin_Page::add_query_args_and_nonce(array(
+			'action' => 'view_transaction',
+			'TXN_ID' => $transaction->ID(),
+		), TXN_ADMIN_URL);
+		$content      = '<a href="' . $view_lnk_url . '"'
+						. ' title="' . esc_attr__('Go to Transaction Details', 'event_espresso') . '">'
+						. $transaction->ID()
+						. '</a>';
+
+		//txn timestamp
+		$content .= '  <span class="show-on-mobile-view-only">' . $this->_get_txn_timestamp($transaction) . '</span>';
+		return $content;
+	}
+
+
+	/**
+	 * @param \EE_Transaction $transaction
+	 * @return string
+	 * @throws \EE_Error
+	 */
+	protected function _get_txn_timestamp(EE_Transaction $transaction)
+	{
+		//txn timestamp
+		// is TXN less than 2 hours old ?
+		if (($transaction->failed() || $transaction->is_abandoned())
+			&& (
+				(time() - EE_Registry::instance()->SSN->lifespan()) < $transaction->datetime(false, true)
+			)
+		) {
+			$timestamp = esc_html__('TXN in progress...', 'event_espresso');
+		} else {
+			$timestamp = $transaction->get_i18n_datetime('TXN_timestamp');
+		}
+		return $timestamp;
+	}
+
+
+	/**
+	 *    column_cb
+	 *
+	 * @param \EE_Transaction $transaction
+	 * @return string
+	 * @throws \EE_Error
+	 */
+	public function column_cb($transaction)
+	{
+		return sprintf(
+			'<input type="checkbox" name="%1$s[]" value="%2$s" />',
+			$this->_wp_list_args['singular'],
+			$transaction->ID()
+		);
+	}
+
+
+	/**
+	 *    column_TXN_timestamp
+	 *
+	 * @param \EE_Transaction $transaction
+	 * @return string
+	 * @throws \EE_Error
+	 */
+	public function column_TXN_timestamp(EE_Transaction $transaction)
+	{
+		$view_lnk_url = EE_Admin_Page::add_query_args_and_nonce(array(
+			'action' => 'view_transaction',
+			'TXN_ID' => $transaction->ID(),
+		), TXN_ADMIN_URL);
+		$txn_date     = '<a href="' . $view_lnk_url . '"'
+						. ' title="'
+						. esc_attr__('View Transaction Details for TXN #', 'event_espresso') . $transaction->ID() . '">'
+						. $this->_get_txn_timestamp($transaction)
+						. '</a>';
+		//status
+		$txn_date .= '<br><span class="ee-status-text-small">'
+					 . EEH_Template::pretty_status(
+						 $transaction->status_ID(),
+						 false,
+						 'sentence'
+					 )
+					 . '</span>';
+		return $txn_date;
+	}
+
+
+	/**
+	 *    column_TXN_total
+	 *
+	 * @param \EE_Transaction $transaction
+	 * @return string
+	 * @throws \EE_Error
+	 */
+	public function column_TXN_total(EE_Transaction $transaction)
+	{
+		if ($transaction->get('TXN_total') > 0) {
+			return '<span class="txn-pad-rght">'
+				   . apply_filters(
+					   'FHEE__EE_Admin_Transactions_List_Table__column_TXN_total__TXN_total',
+					   $transaction->get_pretty('TXN_total'),
+					   $transaction
+				   )
+				   . '</span>';
+		} else {
+			return '<span class="txn-overview-free-event-spn">' . esc_html__('free', 'event_espresso') . '</span>';
+		}
+	}
+
+
+	/**
+	 *    column_TXN_paid
+	 *
+	 * @param \EE_Transaction $transaction
+	 * @return mixed|string
+	 * @throws \EE_Error
+	 */
+	public function column_TXN_paid(EE_Transaction $transaction)
+	{
+		$transaction_total = $transaction->get('TXN_total');
+		$transaction_paid  = $transaction->get('TXN_paid');
+
+		if (\EEH_Money::compare_floats($transaction_total, 0, '>')) {
+			// monies owing
+			$span_class = 'txn-overview-part-payment-spn';
+			if (\EEH_Money::compare_floats($transaction_paid, $transaction_total, '>=')) {
+				// paid in full
+				$span_class = 'txn-overview-full-payment-spn';
+			} elseif (\EEH_Money::compare_floats($transaction_paid, 0, '==')) {
+				// no payments made
+				$span_class = 'txn-overview-no-payment-spn';
+			}
+		} else {
+			$span_class       = 'txn-overview-free-event-spn';
+			$transaction_paid = 0;
+		}
+
+		$payment_method      = $transaction->payment_method();
+		$payment_method_name = $payment_method instanceof EE_Payment_Method
+			? $payment_method->admin_name()
+			: esc_html__('Unknown', 'event_espresso');
+		$transaction_paid_content = $transaction_paid !== 0 ? $transaction->get_pretty('TXN_paid') : $transaction_paid;
+
+		$content = '<span class="' . $span_class . ' txn-pad-rght">'
+				   . $transaction_paid_content
+				   . '</span>';
+		if ($transaction_paid > 0) {
+			$content .= '<br><span class="ee-status-text-small">'
+						. sprintf(
+							esc_html__('...via %s', 'event_espresso'),
+							$payment_method_name
+						)
+						. '</span>';
+		}
+		return $content;
+	}
+
+
+	/**
+	 *    column_ATT_fname
+	 *
+	 * @param \EE_Transaction $transaction
+	 * @return string
+	 * @throws \EE_Error
+	 */
+	public function column_ATT_fname(EE_Transaction $transaction)
+	{
+		$primary_reg = $transaction->primary_registration();
+		$attendee    = $primary_reg->get_first_related('Attendee');
+		if ($attendee instanceof EE_Attendee) {
+			$edit_lnk_url = EE_Admin_Page::add_query_args_and_nonce(array(
+				'action'  => 'view_registration',
+				'_REG_ID' => $primary_reg->ID(),
+			), REG_ADMIN_URL);
+			$content      = EE_Registry::instance()->CAP->current_user_can(
+				'ee_read_registration',
+				'espresso_registrations_view_registration',
+				$primary_reg->ID()
+			)
+				? '<a href="' . $edit_lnk_url . '"'
+					. ' title="' . esc_attr__('View Registration Details', 'event_espresso') . '">'
+					. $attendee->full_name()
+					. '</a>'
+				: $attendee->full_name();
+			$content      .= '<br>' . $attendee->email();
+			return $content;
+		}
+		return $transaction->failed() || $transaction->is_abandoned()
+			? esc_html__('no contact record.', 'event_espresso')
+			: esc_html__(
+				'No contact record, because the transaction was abandoned or the registration process failed.',
+				'event_espresso'
+			);
+	}
+
+
+	/**
+	 *    column_ATT_email
+	 *
+	 * @param \EE_Transaction $transaction
+	 * @return string
+	 * @throws \EE_Error
+	 */
+	public function column_ATT_email(EE_Transaction $transaction)
+	{
+		$attendee = $transaction->primary_registration()->get_first_related('Attendee');
+		if (! empty($attendee)) {
+			return '<a href="mailto:' . $attendee->get('ATT_email') . '">'
+				   . $attendee->get('ATT_email')
+				   . '</a>';
+		} else {
+			return $transaction->failed() || $transaction->is_abandoned()
+				? esc_html__('no contact record.', 'event_espresso')
+				: esc_html__(
+					'No contact record, because the transaction was abandoned or the registration process failed.',
+					'event_espresso'
+				);
+		}
+	}
+
+
+	/**
+	 *    column_event_name
+	 *
+	 * @param \EE_Transaction $transaction
+	 * @return string
+	 * @throws \EE_Error
+	 */
+	public function column_event_name(EE_Transaction $transaction)
+	{
+		$actions = array();
+		$event   = $transaction->primary_registration()->get_first_related('Event');
+		if (! empty($event)) {
+			$edit_event_url = EE_Admin_Page::add_query_args_and_nonce(
+				array('action' => 'edit', 'post' => $event->ID()),
+				EVENTS_ADMIN_URL
+			);
+			$event_name     = $event->get('EVT_name');
+
+			//filter this view by transactions for this event
+			$txn_by_event_lnk = EE_Admin_Page::add_query_args_and_nonce(array(
+				'action' => 'default',
+				'EVT_ID' => $event->ID(),
+			));
+			if (EE_Registry::instance()->CAP->current_user_can(
+				'ee_edit_event',
+				'espresso_events_edit',
+				$event->ID()
+			)) {
+				$actions['filter_by_event'] = '<a href="' . $txn_by_event_lnk . '"'
+						. ' title="' . esc_attr__('Filter transactions by this event', 'event_espresso') . '">'
+						. esc_html__('View Transactions for this event', 'event_espresso')
+						. '</a>';
+			}
+
+			return sprintf(
+				'%1$s %2$s',
+				EE_Registry::instance()->CAP->current_user_can(
+					'ee_edit_event',
+					'espresso_events_edit',
+					$event->ID()
+				)
+					? '<a href="' . $edit_event_url . '"'
+						. ' title="'
+						. sprintf(
+							esc_attr__('Edit Event: %s', 'event_espresso'),
+							$event->get('EVT_name')
+						)
+						. '">'
+						. wp_trim_words(
+							$event_name,
+							30,
+							'...'
+						)
+						. '</a>'
+						: wp_trim_words($event_name, 30, '...'),
+				$this->row_actions($actions)
+			);
+		} else {
+			return esc_html__(
+				'The event associated with this transaction via the primary registration cannot be retrieved.',
+				'event_espresso'
+			);
+		}
+	}
+
+
+	/**
+	 *    column_actions
+	 *
+	 * @param \EE_Transaction $transaction
+	 * @return string
+	 * @throws \EE_Error
+	 */
+	public function column_actions(EE_Transaction $transaction)
+	{
+		return $this->_action_string(
+			$this->get_transaction_details_link($transaction)
+			. $this->get_invoice_link($transaction)
+			. $this->get_receipt_link($transaction)
+			. $this->get_primary_registration_details_link($transaction)
+			. $this->get_send_payment_reminder_trigger_link($transaction)
+			. $this->get_payment_overview_link($transaction)
+			. $this->get_related_messages_link($transaction),
+			$transaction,
+			'ul',
+			'txn-overview-actions-ul'
+		);
+	}
+
+
+	/**
+	 * Get the transaction details link.
+	 * @param EE_Transaction $transaction
+	 * @return string
+	 * @throws EE_Error
+	 */
+	protected function get_transaction_details_link(EE_Transaction $transaction)
+	{
+		$url          = EE_Admin_Page::add_query_args_and_nonce(array(
+			'action' => 'view_transaction',
+			'TXN_ID' => $transaction->ID(),
+		), TXN_ADMIN_URL);
+		return '
 			<li>
 				<a href="' . $url . '"'
-                    . ' title="' . esc_attr__('View Transaction Details', 'event_espresso') . '" class="tiny-text">
+					. ' title="' . esc_attr__('View Transaction Details', 'event_espresso') . '" class="tiny-text">
 					<span class="dashicons dashicons-cart"></span>
 				</a>
 			</li>';
-    }
-
-
-    /**
-     * Get the invoice link for the given registration.
-     * @param EE_Transaction $transaction
-     * @return string
-     * @throws EE_Error
-     */
-    protected function get_invoice_link(EE_Transaction $transaction)
-    {
-        $registration = $transaction->primary_registration();
-        if ($registration instanceof EE_Registration) {
-            $url = $registration->invoice_url();
-            //only show invoice link if message type is active.
-            if ($registration->attendee() instanceof EE_Attendee
-                && EEH_MSG_Template::is_mt_active('invoice')
-            ) {
-                return '
+	}
+
+
+	/**
+	 * Get the invoice link for the given registration.
+	 * @param EE_Transaction $transaction
+	 * @return string
+	 * @throws EE_Error
+	 */
+	protected function get_invoice_link(EE_Transaction $transaction)
+	{
+		$registration = $transaction->primary_registration();
+		if ($registration instanceof EE_Registration) {
+			$url = $registration->invoice_url();
+			//only show invoice link if message type is active.
+			if ($registration->attendee() instanceof EE_Attendee
+				&& EEH_MSG_Template::is_mt_active('invoice')
+			) {
+				return '
                 <li>
                     <a title="' . esc_attr__('View Transaction Invoice', 'event_espresso') . '"'
-                       . ' target="_blank" href="' . $url . '" class="tiny-text">
+					   . ' target="_blank" href="' . $url . '" class="tiny-text">
                         <span class="dashicons dashicons-media-spreadsheet ee-icon-size-18"></span>
                     </a>
                 </li>';
-            }
-        }
-        return '';
-    }
-
-
-    /**
-     * Get the receipt link for the transaction.
-     * @param EE_Transaction $transaction
-     * @return string
-     * @throws EE_Error
-     */
-    protected function get_receipt_link(EE_Transaction $transaction)
-    {
-        $registration = $transaction->primary_registration();
-        if ($registration instanceof EE_Registration) {
-            $url = $registration->receipt_url();
-            //only show receipt link if message type is active.
-            if ($registration->attendee() instanceof EE_Attendee
-                && EEH_MSG_Template::is_mt_active('receipt')) {
-                return '
+			}
+		}
+		return '';
+	}
+
+
+	/**
+	 * Get the receipt link for the transaction.
+	 * @param EE_Transaction $transaction
+	 * @return string
+	 * @throws EE_Error
+	 */
+	protected function get_receipt_link(EE_Transaction $transaction)
+	{
+		$registration = $transaction->primary_registration();
+		if ($registration instanceof EE_Registration) {
+			$url = $registration->receipt_url();
+			//only show receipt link if message type is active.
+			if ($registration->attendee() instanceof EE_Attendee
+				&& EEH_MSG_Template::is_mt_active('receipt')) {
+				return '
 			<li>
 				<a title="' . esc_attr__('View Transaction Receipt', 'event_espresso') . '"'
-                                  . ' target="_blank" href="' . $url . '" class="tiny-text">
+								  . ' target="_blank" href="' . $url . '" class="tiny-text">
 					<span class="dashicons dashicons-media-default ee-icon-size-18"></span>
 				</a>
 			</li>';
-            }
-        }
-        return '';
-    }
-
-
-    /**
-     * Get the link to view the details for the primary registration.
-     * @param EE_Transaction $transaction
-     * @return string
-     * @throws EE_Error
-     */
-    protected function get_primary_registration_details_link(EE_Transaction $transaction)
-    {
-        $registration = $transaction->primary_registration();
-        if ($registration instanceof EE_Registration) {
-            $url      = EE_Admin_Page::add_query_args_and_nonce(array(
-                'action'  => 'view_registration',
-                '_REG_ID' => $registration->ID(),
-            ), REG_ADMIN_URL);
-            return EE_Registry::instance()->CAP->current_user_can(
-                'ee_read_registration',
-                'espresso_registrations_view_registration',
-                $registration->ID()
-            )
-                ? '
+			}
+		}
+		return '';
+	}
+
+
+	/**
+	 * Get the link to view the details for the primary registration.
+	 * @param EE_Transaction $transaction
+	 * @return string
+	 * @throws EE_Error
+	 */
+	protected function get_primary_registration_details_link(EE_Transaction $transaction)
+	{
+		$registration = $transaction->primary_registration();
+		if ($registration instanceof EE_Registration) {
+			$url      = EE_Admin_Page::add_query_args_and_nonce(array(
+				'action'  => 'view_registration',
+				'_REG_ID' => $registration->ID(),
+			), REG_ADMIN_URL);
+			return EE_Registry::instance()->CAP->current_user_can(
+				'ee_read_registration',
+				'espresso_registrations_view_registration',
+				$registration->ID()
+			)
+				? '
 				<li>
 					<a href="' . $url . '"'
-                  . ' title="' . esc_attr__('View Registration Details', 'event_espresso') . '" class="tiny-text">
+				  . ' title="' . esc_attr__('View Registration Details', 'event_espresso') . '" class="tiny-text">
 						<span class="dashicons dashicons-clipboard"></span>
 					</a>
 				</li>'
-                : '';
-        }
-        return '';
-    }
-
-
-    /**
-     * Get send payment reminder trigger link
-     * @param EE_Transaction $transaction
-     * @return string
-     * @throws EE_Error
-     */
-    protected function get_send_payment_reminder_trigger_link(EE_Transaction $transaction)
-    {
-        $registration = $transaction->primary_registration();
-        if ($registration instanceof EE_Registration
-            && $registration->attendee() instanceof EE_Attendee
-            && EEH_MSG_Template::is_mt_active('payment_reminder')
-            && ! in_array(
-                $transaction->status_ID(),
-                array(EEM_Transaction::complete_status_code, EEM_Transaction::overpaid_status_code),
-                true
-            )
-            && EE_Registry::instance()->CAP->current_user_can(
-                'ee_send_message',
-                'espresso_transactions_send_payment_reminder'
-            )
-        ) {
-            $url = EE_Admin_Page::add_query_args_and_nonce(array(
-                'action' => 'send_payment_reminder',
-                'TXN_ID' => $transaction->ID(),
-            ), TXN_ADMIN_URL);
-            return  '
+				: '';
+		}
+		return '';
+	}
+
+
+	/**
+	 * Get send payment reminder trigger link
+	 * @param EE_Transaction $transaction
+	 * @return string
+	 * @throws EE_Error
+	 */
+	protected function get_send_payment_reminder_trigger_link(EE_Transaction $transaction)
+	{
+		$registration = $transaction->primary_registration();
+		if ($registration instanceof EE_Registration
+			&& $registration->attendee() instanceof EE_Attendee
+			&& EEH_MSG_Template::is_mt_active('payment_reminder')
+			&& ! in_array(
+				$transaction->status_ID(),
+				array(EEM_Transaction::complete_status_code, EEM_Transaction::overpaid_status_code),
+				true
+			)
+			&& EE_Registry::instance()->CAP->current_user_can(
+				'ee_send_message',
+				'espresso_transactions_send_payment_reminder'
+			)
+		) {
+			$url = EE_Admin_Page::add_query_args_and_nonce(array(
+				'action' => 'send_payment_reminder',
+				'TXN_ID' => $transaction->ID(),
+			), TXN_ADMIN_URL);
+			return  '
             <li>
                 <a href="' . $url . '"'
-                  . ' title="' . esc_attr__('Send Payment Reminder', 'event_espresso') . '" class="tiny-text">
+				  . ' title="' . esc_attr__('Send Payment Reminder', 'event_espresso') . '" class="tiny-text">
                     <span class="dashicons dashicons-email-alt"></span>
                 </a>
             </li>';
-        }
-        return '';
-    }
-
-
-
-    /**
-     * Get link to filtered view in the message activity list table of messages for this transaction.
-     * @param EE_Transaction $transaction
-     * @return string
-     * @throws EE_Error
-     */
-    protected function get_related_messages_link(EE_Transaction $transaction)
-    {
-        $url = EEH_MSG_Template::get_message_action_link(
-            'see_notifications_for',
-            null,
-            array('TXN_ID' => $transaction->ID())
-        );
-        return EE_Registry::instance()->CAP->current_user_can(
-            'ee_read_global_messages',
-            'view_filtered_messages'
-        )
-            ? '<li>' . $url . '</li>'
-            : '';
-    }
-
-
-    /**
-     * Return the link to make a payment on the frontend
-     * @param EE_Transaction $transaction
-     * @return string
-     * @throws EE_Error
-     */
-    protected function get_payment_overview_link(EE_Transaction $transaction)
-    {
-        $registration = $transaction->primary_registration();
-        if ($registration instanceof EE_Registration
-            && $transaction->status_ID() !== EEM_Transaction::complete_status_code
-            && $registration->owes_monies_and_can_pay()
-        ) {
-            return '
+		}
+		return '';
+	}
+
+
+
+	/**
+	 * Get link to filtered view in the message activity list table of messages for this transaction.
+	 * @param EE_Transaction $transaction
+	 * @return string
+	 * @throws EE_Error
+	 */
+	protected function get_related_messages_link(EE_Transaction $transaction)
+	{
+		$url = EEH_MSG_Template::get_message_action_link(
+			'see_notifications_for',
+			null,
+			array('TXN_ID' => $transaction->ID())
+		);
+		return EE_Registry::instance()->CAP->current_user_can(
+			'ee_read_global_messages',
+			'view_filtered_messages'
+		)
+			? '<li>' . $url . '</li>'
+			: '';
+	}
+
+
+	/**
+	 * Return the link to make a payment on the frontend
+	 * @param EE_Transaction $transaction
+	 * @return string
+	 * @throws EE_Error
+	 */
+	protected function get_payment_overview_link(EE_Transaction $transaction)
+	{
+		$registration = $transaction->primary_registration();
+		if ($registration instanceof EE_Registration
+			&& $transaction->status_ID() !== EEM_Transaction::complete_status_code
+			&& $registration->owes_monies_and_can_pay()
+		) {
+			return '
             <li>
                 <a title="' . esc_attr__('Make Payment from the Frontend.', 'event_espresso') . '"'
-                    . ' target="_blank" href="' . $registration->payment_overview_url(true) . '"'
-                    . ' class="tiny-text">
+					. ' target="_blank" href="' . $registration->payment_overview_url(true) . '"'
+					. ' class="tiny-text">
                     <span class="dashicons dashicons-money ee-icon-size-18"></span>
                 </a>
             </li>
             ';
 
-        }
-        return '';
-    }
+		}
+		return '';
+	}
 }

Spacing +36 added lines, -36 removed lines

@@ -48,11 +48,11 @@ 
             'ajax'     => true,
             'screen'   => $this->_admin_page->get_current_screen()->id,
         );
-        $ID_column_name      = __('ID', 'event_espresso');
+        $ID_column_name = __('ID', 'event_espresso');
         $ID_column_name      .= ' : <span class="show-on-mobile-view-only" style="float:none">';
         $ID_column_name      .= __('Transaction Date', 'event_espresso');
         $ID_column_name      .= '</span> ';
-        $this->_columns      = array(
+        $this->_columns = array(
             'TXN_ID'        => $ID_column_name,
             'TXN_timestamp' => __('Transaction Date', 'event_espresso'),
             'TXN_total'     => __('Total', 'event_espresso'),
@@ -87,7 +87,7 @@ 
     {
         $class = parent::_get_row_class($transaction);
         //add status class
-        $class .= ' ee-status-strip txn-status-' . $transaction->status_ID();
+        $class .= ' ee-status-strip txn-status-'.$transaction->status_ID();
         if ($this->_has_checkbox_column) {
             $class .= ' has-checkbox-column';
         }
@@ -113,7 +113,7 @@ 
                 'm/d/Y',
                 strtotime('-10 year')
             );
-        $end_date   = isset($this->_req_data['txn-filter-end-date'])
+        $end_date = isset($this->_req_data['txn-filter-end-date'])
             ? wp_strip_all_tags($this->_req_data['txn-filter-end-date'])
             : date(
                 'm/d/Y',
@@ -158,13 +158,13 @@ 
             'action' => 'view_transaction',
             'TXN_ID' => $transaction->ID(),
         ), TXN_ADMIN_URL);
-        $content      = '<a href="' . $view_lnk_url . '"'
-                        . ' title="' . esc_attr__('Go to Transaction Details', 'event_espresso') . '">'
+        $content = '<a href="'.$view_lnk_url.'"'
+                        . ' title="'.esc_attr__('Go to Transaction Details', 'event_espresso').'">'
                         . $transaction->ID()
                         . '</a>';
 
         //txn timestamp
-        $content .= '  <span class="show-on-mobile-view-only">' . $this->_get_txn_timestamp($transaction) . '</span>';
+        $content .= '  <span class="show-on-mobile-view-only">'.$this->_get_txn_timestamp($transaction).'</span>';
         return $content;
     }
 
@@ -221,9 +221,9 @@ 
             'action' => 'view_transaction',
             'TXN_ID' => $transaction->ID(),
         ), TXN_ADMIN_URL);
-        $txn_date     = '<a href="' . $view_lnk_url . '"'
+        $txn_date = '<a href="'.$view_lnk_url.'"'
                         . ' title="'
-                        . esc_attr__('View Transaction Details for TXN #', 'event_espresso') . $transaction->ID() . '">'
+                        . esc_attr__('View Transaction Details for TXN #', 'event_espresso').$transaction->ID().'">'
                         . $this->_get_txn_timestamp($transaction)
                         . '</a>';
         //status
@@ -256,7 +256,7 @@ 
                    )
                    . '</span>';
         } else {
-            return '<span class="txn-overview-free-event-spn">' . esc_html__('free', 'event_espresso') . '</span>';
+            return '<span class="txn-overview-free-event-spn">'.esc_html__('free', 'event_espresso').'</span>';
         }
     }
 
@@ -294,7 +294,7 @@ 
             : esc_html__('Unknown', 'event_espresso');
         $transaction_paid_content = $transaction_paid !== 0 ? $transaction->get_pretty('TXN_paid') : $transaction_paid;
 
-        $content = '<span class="' . $span_class . ' txn-pad-rght">'
+        $content = '<span class="'.$span_class.' txn-pad-rght">'
                    . $transaction_paid_content
                    . '</span>';
         if ($transaction_paid > 0) {
@@ -325,17 +325,17 @@ 
                 'action'  => 'view_registration',
                 '_REG_ID' => $primary_reg->ID(),
             ), REG_ADMIN_URL);
-            $content      = EE_Registry::instance()->CAP->current_user_can(
+            $content = EE_Registry::instance()->CAP->current_user_can(
                 'ee_read_registration',
                 'espresso_registrations_view_registration',
                 $primary_reg->ID()
             )
-                ? '<a href="' . $edit_lnk_url . '"'
-                    . ' title="' . esc_attr__('View Registration Details', 'event_espresso') . '">'
+                ? '<a href="'.$edit_lnk_url.'"'
+                    . ' title="'.esc_attr__('View Registration Details', 'event_espresso').'">'
                     . $attendee->full_name()
                     . '</a>'
                 : $attendee->full_name();
-            $content      .= '<br>' . $attendee->email();
+            $content .= '<br>'.$attendee->email();
             return $content;
         }
         return $transaction->failed() || $transaction->is_abandoned()
@@ -357,8 +357,8 @@ 
     public function column_ATT_email(EE_Transaction $transaction)
     {
         $attendee = $transaction->primary_registration()->get_first_related('Attendee');
-        if (! empty($attendee)) {
-            return '<a href="mailto:' . $attendee->get('ATT_email') . '">'
+        if ( ! empty($attendee)) {
+            return '<a href="mailto:'.$attendee->get('ATT_email').'">'
                    . $attendee->get('ATT_email')
                    . '</a>';
         } else {
@@ -383,12 +383,12 @@ 
     {
         $actions = array();
         $event   = $transaction->primary_registration()->get_first_related('Event');
-        if (! empty($event)) {
+        if ( ! empty($event)) {
             $edit_event_url = EE_Admin_Page::add_query_args_and_nonce(
                 array('action' => 'edit', 'post' => $event->ID()),
                 EVENTS_ADMIN_URL
             );
-            $event_name     = $event->get('EVT_name');
+            $event_name = $event->get('EVT_name');
 
             //filter this view by transactions for this event
             $txn_by_event_lnk = EE_Admin_Page::add_query_args_and_nonce(array(
@@ -400,8 +400,8 @@ 
                 'espresso_events_edit',
                 $event->ID()
             )) {
-                $actions['filter_by_event'] = '<a href="' . $txn_by_event_lnk . '"'
-                        . ' title="' . esc_attr__('Filter transactions by this event', 'event_espresso') . '">'
+                $actions['filter_by_event'] = '<a href="'.$txn_by_event_lnk.'"'
+                        . ' title="'.esc_attr__('Filter transactions by this event', 'event_espresso').'">'
                         . esc_html__('View Transactions for this event', 'event_espresso')
                         . '</a>';
             }
@@ -413,7 +413,7 @@ 
                     'espresso_events_edit',
                     $event->ID()
                 )
-                    ? '<a href="' . $edit_event_url . '"'
+                    ? '<a href="'.$edit_event_url.'"'
                         . ' title="'
                         . sprintf(
                             esc_attr__('Edit Event: %s', 'event_espresso'),
@@ -470,14 +470,14 @@ 
      */
     protected function get_transaction_details_link(EE_Transaction $transaction)
     {
-        $url          = EE_Admin_Page::add_query_args_and_nonce(array(
+        $url = EE_Admin_Page::add_query_args_and_nonce(array(
             'action' => 'view_transaction',
             'TXN_ID' => $transaction->ID(),
         ), TXN_ADMIN_URL);
         return '
 			<li>
-				<a href="' . $url . '"'
-                    . ' title="' . esc_attr__('View Transaction Details', 'event_espresso') . '" class="tiny-text">
+				<a href="' . $url.'"'
+                    . ' title="'.esc_attr__('View Transaction Details', 'event_espresso').'" class="tiny-text">
 					<span class="dashicons dashicons-cart"></span>
 				</a>
 			</li>';
@@ -501,8 +501,8 @@ 
             ) {
                 return '
                 <li>
-                    <a title="' . esc_attr__('View Transaction Invoice', 'event_espresso') . '"'
-                       . ' target="_blank" href="' . $url . '" class="tiny-text">
+                    <a title="' . esc_attr__('View Transaction Invoice', 'event_espresso').'"'
+                       . ' target="_blank" href="'.$url.'" class="tiny-text">
                         <span class="dashicons dashicons-media-spreadsheet ee-icon-size-18"></span>
                     </a>
                 </li>';
@@ -528,8 +528,8 @@ 
                 && EEH_MSG_Template::is_mt_active('receipt')) {
                 return '
 			<li>
-				<a title="' . esc_attr__('View Transaction Receipt', 'event_espresso') . '"'
-                                  . ' target="_blank" href="' . $url . '" class="tiny-text">
+				<a title="' . esc_attr__('View Transaction Receipt', 'event_espresso').'"'
+                                  . ' target="_blank" href="'.$url.'" class="tiny-text">
 					<span class="dashicons dashicons-media-default ee-icon-size-18"></span>
 				</a>
 			</li>';
@@ -560,8 +560,8 @@ 
             )
                 ? '
 				<li>
-					<a href="' . $url . '"'
-                  . ' title="' . esc_attr__('View Registration Details', 'event_espresso') . '" class="tiny-text">
+					<a href="' . $url.'"'
+                  . ' title="'.esc_attr__('View Registration Details', 'event_espresso').'" class="tiny-text">
 						<span class="dashicons dashicons-clipboard"></span>
 					</a>
 				</li>'
@@ -599,8 +599,8 @@ 
             ), TXN_ADMIN_URL);
             return  '
             <li>
-                <a href="' . $url . '"'
-                  . ' title="' . esc_attr__('Send Payment Reminder', 'event_espresso') . '" class="tiny-text">
+                <a href="' . $url.'"'
+                  . ' title="'.esc_attr__('Send Payment Reminder', 'event_espresso').'" class="tiny-text">
                     <span class="dashicons dashicons-email-alt"></span>
                 </a>
             </li>';
@@ -627,7 +627,7 @@ 
             'ee_read_global_messages',
             'view_filtered_messages'
         )
-            ? '<li>' . $url . '</li>'
+            ? '<li>'.$url.'</li>'
             : '';
     }
 
@@ -647,8 +647,8 @@ 
         ) {
             return '
             <li>
-                <a title="' . esc_attr__('Make Payment from the Frontend.', 'event_espresso') . '"'
-                    . ' target="_blank" href="' . $registration->payment_overview_url(true) . '"'
+                <a title="' . esc_attr__('Make Payment from the Frontend.', 'event_espresso').'"'
+                    . ' target="_blank" href="'.$registration->payment_overview_url(true).'"'
                     . ' class="tiny-text">
                     <span class="dashicons dashicons-money ee-icon-size-18"></span>
                 </a>

core/db_classes/EE_Registration.class.php

Doc Comments +4 added lines, -3 removed lines

@@ -1159,7 +1159,7 @@ 
      * Sets deleted
      *
      * @param boolean $deleted
-     * @return bool
+     * @return boolean|null
      * @throws EE_Error
      * @throws RuntimeException
      */
@@ -1217,6 +1217,7 @@ 
      * @param int | EE_Datetime $DTT_OR_ID      The datetime the registration is being checked against
      * @param bool              $check_approved This is used to indicate whether the caller wants can_checkin to also
      *                                          consider registration status as well as datetime access.
+     * @param integer $DTT_OR_ID
      * @return bool
      * @throws EE_Error
      */
@@ -1387,7 +1388,7 @@ 
      * Returns the latest datetime related to this registration (via the ticket attached to the registration).
      * "Latest" is defined by the `DTT_EVT_start` column.
      *
-     * @return EE_Datetime|null
+     * @return null|EE_Base_Class
      * @throws \EE_Error
      */
     public function get_latest_related_datetime()
@@ -1680,7 +1681,7 @@ 
      * This grabs the payment method corresponding to the last payment made for the amount owing on the registration.
      * Note: if there are no payments on the registration there will be no payment method returned.
      *
-     * @return EE_Payment_Method|null
+     * @return null|EE_Base_Class
      */
     public function payment_method()
     {

Spacing +12 added lines, -12 removed lines

@@ -109,7 +109,7 @@ 
     {
         switch ($field_name) {
             case 'REG_code':
-                if (! empty($field_value) && $this->reg_code() === null) {
+                if ( ! empty($field_value) && $this->reg_code() === null) {
                     $this->set_reg_code($field_value, $use_default);
                 }
                 break;
@@ -284,7 +284,7 @@ 
     public function event()
     {
         $event = $this->get_first_related('Event');
-        if (! $event instanceof \EE_Event) {
+        if ( ! $event instanceof \EE_Event) {
             throw new EntityNotFoundException('Event ID', $this->event_ID());
         }
         return $event;
@@ -973,7 +973,7 @@ 
             false,
             'sentence'
         );
-        $icon   = '';
+        $icon = '';
         switch ($this->status_ID()) {
             case EEM_Registration::status_id_approved:
                 $icon = $show_icons
@@ -1011,7 +1011,7 @@ 
                     : '';
                 break;
         }
-        return $icon . $status[$this->status_ID()];
+        return $icon.$status[$this->status_ID()];
     }
 
 
@@ -1229,7 +1229,7 @@ 
             return false;
         }
         //is there a datetime ticket that matches this dtt_ID?
-        if (! (EEM_Datetime_Ticket::instance()->exists(array(
+        if ( ! (EEM_Datetime_Ticket::instance()->exists(array(
             array(
                 'TKT_ID' => $this->get('TKT_ID'),
                 'DTT_ID' => $DTT_ID,
@@ -1258,7 +1258,7 @@ 
     {
         $DTT_ID = EEM_Datetime::instance()->ensure_is_ID($DTT_OR_ID);
 
-        if (! $DTT_ID) {
+        if ( ! $DTT_ID) {
             return false;
         }
 
@@ -1266,7 +1266,7 @@ 
 
         // if max uses is not set or equals infinity then return true cause its not a factor for whether user can
         // check-in or not.
-        if (! $max_uses || $max_uses === EE_INF) {
+        if ( ! $max_uses || $max_uses === EE_INF) {
             return true;
         }
 
@@ -1322,7 +1322,7 @@ 
             $datetime = $this->get_latest_related_datetime();
             $DTT_ID   = $datetime instanceof EE_Datetime ? $datetime->ID() : 0;
             // verify the registration can checkin for the given DTT_ID
-        } elseif (! $this->can_checkin($DTT_ID, $verify)) {
+        } elseif ( ! $this->can_checkin($DTT_ID, $verify)) {
             EE_Error::add_error(
                 sprintf(
                     esc_html__(
@@ -1505,7 +1505,7 @@ 
     public function transaction()
     {
         $transaction = $this->get_first_related('Transaction');
-        if (! $transaction instanceof \EE_Transaction) {
+        if ( ! $transaction instanceof \EE_Transaction) {
             throw new EntityNotFoundException('Transaction ID', $this->transaction_ID());
         }
         return $transaction;
@@ -1559,11 +1559,11 @@ 
             );
             return;
         }
-        if (! $this->reg_code()) {
+        if ( ! $this->reg_code()) {
             parent::set('REG_code', $REG_code, $use_default);
         } else {
             EE_Error::doing_it_wrong(
-                __CLASS__ . '::' . __FUNCTION__,
+                __CLASS__.'::'.__FUNCTION__,
                 esc_html__('Can not change a registration REG_code once it has been set.', 'event_espresso'),
                 '4.6.0'
             );
@@ -1713,7 +1713,7 @@ 
                 break;
             }
         }
-        if (! ($line_item instanceof \EE_Line_Item && $line_item->OBJ_type() === 'Ticket')) {
+        if ( ! ($line_item instanceof \EE_Line_Item && $line_item->OBJ_type() === 'Ticket')) {
             throw new EntityNotFoundException('Line Item Ticket ID', $ticket->ID());
         }
         return $line_item;

Indentation +1786 added lines, -1786 removed lines

@@ -15,1792 +15,1792 @@
 {
 
 
-    /**
-     * Used to reference when a registration has never been checked in.
-     *
-     * @type int
-     */
-    const checkin_status_never = 2;
-
-    /**
-     * Used to reference when a registration has been checked in.
-     *
-     * @type int
-     */
-    const checkin_status_in = 1;
-
-
-    /**
-     * Used to reference when a registration has been checked out.
-     *
-     * @type int
-     */
-    const checkin_status_out = 0;
-
-
-    /**
-     * extra meta key for tracking reg status os trashed registrations
-     *
-     * @type string
-     */
-    const PRE_TRASH_REG_STATUS_KEY = 'pre_trash_registration_status';
-
-
-    /**
-     * extra meta key for tracking if registration has reserved ticket
-     *
-     * @type string
-     */
-    const HAS_RESERVED_TICKET_KEY = 'has_reserved_ticket';
-
-
-
-    /**
-     * Set Event ID
-     *
-     * @param int $EVT_ID Event ID
-     * @throws EE_Error
-     * @throws RuntimeException
-     */
-    public function set_event($EVT_ID = 0)
-    {
-        $this->set('EVT_ID', $EVT_ID);
-    }
-
-
-
-    /**
-     * Overrides parent set() method so that all calls to set( 'REG_code', $REG_code ) OR set( 'STS_ID', $STS_ID ) can
-     * be routed to internal methods
-     *
-     * @param string $field_name
-     * @param mixed  $field_value
-     * @param bool   $use_default
-     * @throws \EE_Error
-     * @throws \RuntimeException
-     */
-    public function set($field_name, $field_value, $use_default = false)
-    {
-        switch ($field_name) {
-            case 'REG_code':
-                if (! empty($field_value) && $this->reg_code() === null) {
-                    $this->set_reg_code($field_value, $use_default);
-                }
-                break;
-            case 'STS_ID':
-                $this->set_status($field_value, $use_default);
-                break;
-            default:
-                parent::set($field_name, $field_value, $use_default);
-        }
-    }
-
-
-    /**
-     * Set Status ID
-     * updates the registration status and ALSO...
-     * calls reserve_registration_space() if the reg status changes TO approved from any other reg status
-     * calls release_registration_space() if the reg status changes FROM approved to any other reg status
-     *
-     * @param string  $new_STS_ID
-     * @param boolean $use_default
-     * @return bool
-     * @throws \RuntimeException
-     * @throws \EE_Error
-     */
-    public function set_status($new_STS_ID = null, $use_default = false)
-    {
-        // get current REG_Status
-        $old_STS_ID = $this->status_ID();
-        // if status has changed
-        if ($old_STS_ID !== $new_STS_ID // and that status has actually changed
-            && ! empty($old_STS_ID) // and that old status is actually set
-            && ! empty($new_STS_ID) // as well as the new status
-            && $this->ID() // ensure registration is in the db
-        ) {
-            // TO approved
-            if ($new_STS_ID === EEM_Registration::status_id_approved) {
-                // reserve a space by incrementing ticket and datetime sold values
-                $this->_reserve_registration_space();
-                do_action('AHEE__EE_Registration__set_status__to_approved', $this, $old_STS_ID, $new_STS_ID);
-                // OR FROM  approved
-            } elseif ($old_STS_ID === EEM_Registration::status_id_approved) {
-                // release a space by decrementing ticket and datetime sold values
-                $this->_release_registration_space();
-                do_action('AHEE__EE_Registration__set_status__from_approved', $this, $old_STS_ID, $new_STS_ID);
-            }
-            // update status
-            parent::set('STS_ID', $new_STS_ID, $use_default);
-            $this->_update_if_canceled_or_declined($new_STS_ID, $old_STS_ID);
-            /** @type EE_Transaction_Payments $transaction_payments */
-            $transaction_payments = EE_Registry::instance()->load_class('Transaction_Payments');
-            $transaction_payments->recalculate_transaction_total($this->transaction(), false);
-            $this->transaction()->update_status_based_on_total_paid(true);
-            do_action('AHEE__EE_Registration__set_status__after_update', $this, $old_STS_ID, $new_STS_ID);
-            return true;
-        }
-        //even though the old value matches the new value, it's still good to
-        //allow the parent set method to have a say
-        parent::set('STS_ID', $new_STS_ID, $use_default);
-        return true;
-    }
-
-
-    /**
-     * update REGs and TXN when cancelled or declined registrations involved
-     *
-     * @param string $new_STS_ID
-     * @param string $old_STS_ID
-     * @throws \EE_Error
-     */
-    private function _update_if_canceled_or_declined($new_STS_ID, $old_STS_ID)
-    {
-        // these reg statuses should not be considered in any calculations involving monies owing
-        $closed_reg_statuses = EEM_Registration::closed_reg_statuses();
-        // true if registration has been cancelled or declined
-        if (in_array($new_STS_ID, $closed_reg_statuses, true)
-            && ! in_array($old_STS_ID, $closed_reg_statuses, true)
-        ) {
-            /** @type EE_Registration_Processor $registration_processor */
-            $registration_processor = EE_Registry::instance()->load_class('Registration_Processor');
-            /** @type EE_Transaction_Processor $transaction_processor */
-            $transaction_processor = EE_Registry::instance()->load_class('Transaction_Processor');
-            // cancelled or declined registration
-            $registration_processor->update_registration_after_being_canceled_or_declined(
-                $this,
-                $closed_reg_statuses
-            );
-            $transaction_processor->update_transaction_after_canceled_or_declined_registration(
-                $this,
-                $closed_reg_statuses,
-                false
-            );
-            do_action('AHEE__EE_Registration__set_status__canceled_or_declined', $this, $old_STS_ID, $new_STS_ID);
-            return;
-        }
-        // true if reinstating cancelled or declined registration
-        if (in_array($old_STS_ID, $closed_reg_statuses, true)
-            && ! in_array($new_STS_ID, $closed_reg_statuses, true)
-        ) {
-            /** @type EE_Registration_Processor $registration_processor */
-            $registration_processor = EE_Registry::instance()->load_class('Registration_Processor');
-            /** @type EE_Transaction_Processor $transaction_processor */
-            $transaction_processor = EE_Registry::instance()->load_class('Transaction_Processor');
-            // reinstating cancelled or declined registration
-            $registration_processor->update_canceled_or_declined_registration_after_being_reinstated(
-                $this,
-                $closed_reg_statuses
-            );
-            $transaction_processor->update_transaction_after_reinstating_canceled_registration(
-                $this,
-                $closed_reg_statuses,
-                false
-            );
-            do_action('AHEE__EE_Registration__set_status__after_reinstated', $this, $old_STS_ID, $new_STS_ID);
-        }
-    }
-
-
-    /**
-     *        get Status ID
-     */
-    public function status_ID()
-    {
-        return $this->get('STS_ID');
-    }
-
-
-    /**
-     * increments this registration's related ticket sold and corresponding datetime sold values
-     *
-     * @return void
-     * @throws EE_Error
-     * @throws EntityNotFoundException
-     */
-    private function _reserve_registration_space()
-    {
-        // reserved ticket and datetime counts will be decremented as sold counts are incremented
-        // so stop tracking that this reg has a ticket reserved
-        $this->release_reserved_ticket();
-        $ticket = $this->ticket();
-        $ticket->increase_sold();
-        $ticket->save();
-        // possibly set event status to sold out
-        $this->event()->perform_sold_out_status_check();
-    }
-
-
-    /**
-     * Gets the ticket this registration is for
-     *
-     * @param boolean $include_archived whether to include archived tickets or not.
-     * @return EE_Ticket|EE_Base_Class
-     * @throws \EE_Error
-     */
-    public function ticket($include_archived = true)
-    {
-        $query_params = array();
-        if ($include_archived) {
-            $query_params['default_where_conditions'] = 'none';
-        }
-        return $this->get_first_related('Ticket', $query_params);
-    }
-
-
-    /**
-     * Gets the event this registration is for
-     *
-     * @return EE_Event
-     * @throws EE_Error
-     * @throws EntityNotFoundException
-     */
-    public function event()
-    {
-        $event = $this->get_first_related('Event');
-        if (! $event instanceof \EE_Event) {
-            throw new EntityNotFoundException('Event ID', $this->event_ID());
-        }
-        return $event;
-    }
-
-
-    /**
-     * Gets the "author" of the registration.  Note that for the purposes of registrations, the author will correspond
-     * with the author of the event this registration is for.
-     *
-     * @since 4.5.0
-     * @return int
-     * @throws EE_Error
-     * @throws EntityNotFoundException
-     */
-    public function wp_user()
-    {
-        $event = $this->event();
-        if ($event instanceof EE_Event) {
-            return $event->wp_user();
-        }
-        return 0;
-    }
-
-
-    /**
-     * decrements (subtracts) this registration's related ticket sold and corresponding datetime sold values
-     *
-     * @return void
-     * @throws \EE_Error
-     */
-    private function _release_registration_space()
-    {
-        $ticket = $this->ticket();
-        $ticket->decrease_sold();
-        $ticket->save();
-    }
-
-
-    /**
-     * tracks this registration's ticket reservation in extra meta
-     * and can increment related ticket reserved and corresponding datetime reserved values
-     *
-     * @param bool $update_ticket if true, will increment ticket and datetime reserved count
-     * @return void
-     * @throws \EE_Error
-     */
-    public function reserve_ticket($update_ticket = false)
-    {
-        if ($this->get_extra_meta(EE_Registration::HAS_RESERVED_TICKET_KEY, true, false) === false) {
-            // PLZ NOTE: although checking $update_ticket first would be more efficient,
-            // we NEED to ALWAYS call update_extra_meta(), which is why that is done first
-            if ($this->update_extra_meta(EE_Registration::HAS_RESERVED_TICKET_KEY, true, false) && $update_ticket) {
-                $ticket = $this->ticket();
-                $ticket->increase_reserved();
-                $ticket->save();
-            }
-        }
-    }
-
-
-    /**
-     * stops tracking this registration's ticket reservation in extra meta
-     * decrements (subtracts) related ticket reserved and corresponding datetime reserved values
-     *
-     * @param bool $update_ticket if true, will decrement ticket and datetime reserved count
-     * @return void
-     * @throws \EE_Error
-     */
-    public function release_reserved_ticket($update_ticket = false)
-    {
-        if ($this->get_extra_meta(EE_Registration::HAS_RESERVED_TICKET_KEY, true, false) !== false) {
-            // PLZ NOTE: although checking $update_ticket first would be more efficient,
-            // we NEED to ALWAYS call delete_extra_meta(), which is why that is done first
-            if ($this->delete_extra_meta(EE_Registration::HAS_RESERVED_TICKET_KEY) && $update_ticket) {
-                $ticket = $this->ticket();
-                $ticket->decrease_reserved();
-                $ticket->save();
-            }
-        }
-    }
-
-
-    /**
-     * Set Attendee ID
-     *
-     * @param        int $ATT_ID Attendee ID
-     * @throws EE_Error
-     * @throws RuntimeException
-     */
-    public function set_attendee_id($ATT_ID = 0)
-    {
-        $this->set('ATT_ID', $ATT_ID);
-    }
-
-
-    /**
-     *        Set Transaction ID
-     *
-     * @param        int $TXN_ID Transaction ID
-     * @throws EE_Error
-     * @throws RuntimeException
-     */
-    public function set_transaction_id($TXN_ID = 0)
-    {
-        $this->set('TXN_ID', $TXN_ID);
-    }
-
-
-    /**
-     *        Set Session
-     *
-     * @param    string $REG_session PHP Session ID
-     * @throws EE_Error
-     * @throws RuntimeException
-     */
-    public function set_session($REG_session = '')
-    {
-        $this->set('REG_session', $REG_session);
-    }
-
-
-    /**
-     *        Set Registration URL Link
-     *
-     * @param    string $REG_url_link Registration URL Link
-     * @throws EE_Error
-     * @throws RuntimeException
-     */
-    public function set_reg_url_link($REG_url_link = '')
-    {
-        $this->set('REG_url_link', $REG_url_link);
-    }
-
-
-    /**
-     *        Set Attendee Counter
-     *
-     * @param        int $REG_count Primary Attendee
-     * @throws EE_Error
-     * @throws RuntimeException
-     */
-    public function set_count($REG_count = 1)
-    {
-        $this->set('REG_count', $REG_count);
-    }
-
-
-    /**
-     *        Set Group Size
-     *
-     * @param        boolean $REG_group_size Group Registration
-     * @throws EE_Error
-     * @throws RuntimeException
-     */
-    public function set_group_size($REG_group_size = false)
-    {
-        $this->set('REG_group_size', $REG_group_size);
-    }
-
-
-    /**
-     *    is_not_approved -  convenience method that returns TRUE if REG status ID ==
-     *    EEM_Registration::status_id_not_approved
-     *
-     * @return        boolean
-     */
-    public function is_not_approved()
-    {
-        return $this->status_ID() == EEM_Registration::status_id_not_approved ? true : false;
-    }
-
-
-    /**
-     *    is_pending_payment -  convenience method that returns TRUE if REG status ID ==
-     *    EEM_Registration::status_id_pending_payment
-     *
-     * @return        boolean
-     */
-    public function is_pending_payment()
-    {
-        return $this->status_ID() == EEM_Registration::status_id_pending_payment ? true : false;
-    }
-
-
-    /**
-     *    is_approved -  convenience method that returns TRUE if REG status ID == EEM_Registration::status_id_approved
-     *
-     * @return        boolean
-     */
-    public function is_approved()
-    {
-        return $this->status_ID() == EEM_Registration::status_id_approved ? true : false;
-    }
-
-
-    /**
-     *    is_cancelled -  convenience method that returns TRUE if REG status ID == EEM_Registration::status_id_cancelled
-     *
-     * @return        boolean
-     */
-    public function is_cancelled()
-    {
-        return $this->status_ID() == EEM_Registration::status_id_cancelled ? true : false;
-    }
-
-
-    /**
-     *    is_declined -  convenience method that returns TRUE if REG status ID == EEM_Registration::status_id_declined
-     *
-     * @return        boolean
-     */
-    public function is_declined()
-    {
-        return $this->status_ID() == EEM_Registration::status_id_declined ? true : false;
-    }
-
-
-    /**
-     *    is_incomplete -  convenience method that returns TRUE if REG status ID ==
-     *    EEM_Registration::status_id_incomplete
-     *
-     * @return        boolean
-     */
-    public function is_incomplete()
-    {
-        return $this->status_ID() == EEM_Registration::status_id_incomplete ? true : false;
-    }
-
-
-    /**
-     *        Set Registration Date
-     *
-     * @param        mixed ( int or string ) $REG_date Registration Date - Unix timestamp or string representation of
-     *                                                 Date
-     * @throws EE_Error
-     * @throws RuntimeException
-     */
-    public function set_reg_date($REG_date = false)
-    {
-        $this->set('REG_date', $REG_date);
-    }
-
-
-    /**
-     *    Set final price owing for this registration after all ticket/price modifications
-     *
-     * @access    public
-     * @param    float $REG_final_price
-     * @throws EE_Error
-     * @throws RuntimeException
-     */
-    public function set_final_price($REG_final_price = 0.00)
-    {
-        $this->set('REG_final_price', $REG_final_price);
-    }
-
-
-    /**
-     *    Set amount paid towards this registration's final price
-     *
-     * @access    public
-     * @param    float $REG_paid
-     * @throws EE_Error
-     * @throws RuntimeException
-     */
-    public function set_paid($REG_paid = 0.00)
-    {
-        $this->set('REG_paid', $REG_paid);
-    }
-
-
-    /**
-     *        Attendee Is Going
-     *
-     * @param        boolean $REG_att_is_going Attendee Is Going
-     * @throws EE_Error
-     * @throws RuntimeException
-     */
-    public function set_att_is_going($REG_att_is_going = false)
-    {
-        $this->set('REG_att_is_going', $REG_att_is_going);
-    }
-
-
-    /**
-     * Gets the related attendee
-     *
-     * @return EE_Attendee
-     * @throws EE_Error
-     */
-    public function attendee()
-    {
-        return $this->get_first_related('Attendee');
-    }
-
-
-    /**
-     *        get Event ID
-     */
-    public function event_ID()
-    {
-        return $this->get('EVT_ID');
-    }
-
-
-    /**
-     *        get Event ID
-     */
-    public function event_name()
-    {
-        $event = $this->event_obj();
-        if ($event) {
-            return $event->name();
-        } else {
-            return null;
-        }
-    }
-
-
-    /**
-     * Fetches the event this registration is for
-     *
-     * @return EE_Event
-     * @throws EE_Error
-     */
-    public function event_obj()
-    {
-        return $this->get_first_related('Event');
-    }
-
-
-    /**
-     *        get Attendee ID
-     */
-    public function attendee_ID()
-    {
-        return $this->get('ATT_ID');
-    }
-
-
-    /**
-     *        get PHP Session ID
-     */
-    public function session_ID()
-    {
-        return $this->get('REG_session');
-    }
-
-
-    /**
-     * Gets the string which represents the URL trigger for the receipt template in the message template system.
-     *
-     * @param string $messenger 'pdf' or 'html'.  Default 'html'.
-     * @return string
-     */
-    public function receipt_url($messenger = 'html')
-    {
-
-        /**
-         * The below will be deprecated one version after this.  We check first if there is a custom receipt template
-         * already in use on old system.  If there is then we just return the standard url for it.
-         *
-         * @since 4.5.0
-         */
-        $template_relative_path = 'modules/gateways/Invoice/lib/templates/receipt_body.template.php';
-        $has_custom             = EEH_Template::locate_template(
-            $template_relative_path,
-            array(),
-            true,
-            true,
-            true
-        );
-
-        if ($has_custom) {
-            return add_query_arg(array('receipt' => 'true'), $this->invoice_url('launch'));
-        }
-        return apply_filters('FHEE__EE_Registration__receipt_url__receipt_url', '', $this, $messenger, 'receipt');
-    }
-
-
-    /**
-     * Gets the string which represents the URL trigger for the invoice template in the message template system.
-     *
-     * @param string $messenger 'pdf' or 'html'.  Default 'html'.
-     * @return string
-     * @throws EE_Error
-     */
-    public function invoice_url($messenger = 'html')
-    {
-        /**
-         * The below will be deprecated one version after this.  We check first if there is a custom invoice template
-         * already in use on old system.  If there is then we just return the standard url for it.
-         *
-         * @since 4.5.0
-         */
-        $template_relative_path = 'modules/gateways/Invoice/lib/templates/invoice_body.template.php';
-        $has_custom             = EEH_Template::locate_template(
-            $template_relative_path,
-            array(),
-            true,
-            true,
-            true
-        );
-
-        if ($has_custom) {
-            if ($messenger == 'html') {
-                return $this->invoice_url('launch');
-            }
-            $route = $messenger == 'download' || $messenger == 'pdf' ? 'download_invoice' : 'launch_invoice';
-
-            $query_args = array('ee' => $route, 'id' => $this->reg_url_link());
-            if ($messenger == 'html') {
-                $query_args['html'] = true;
-            }
-            return add_query_arg($query_args, get_permalink(EE_Registry::instance()->CFG->core->thank_you_page_id));
-        }
-        return apply_filters('FHEE__EE_Registration__invoice_url__invoice_url', '', $this, $messenger, 'invoice');
-    }
-
-
-    /**
-     * get Registration URL Link
-     *
-     * @access public
-     * @return string
-     * @throws \EE_Error
-     */
-    public function reg_url_link()
-    {
-        return (string) $this->get('REG_url_link');
-    }
-
-
-    /**
-     * Echoes out invoice_url()
-     *
-     * @param string $type 'download','launch', or 'html' (default is 'launch')
-     * @return void
-     * @throws EE_Error
-     */
-    public function e_invoice_url($type = 'launch')
-    {
-        echo $this->invoice_url($type);
-    }
-
-
-    /**
-     * Echoes out payment_overview_url
-     */
-    public function e_payment_overview_url()
-    {
-        echo $this->payment_overview_url();
-    }
-
-
-    /**
-     * Gets the URL of the thank you page with this registration REG_url_link added as
-     * a query parameter
-     *
-     * @param bool $clear_session Set to true when you want to clear the session on revisiting the
-     *                            payment overview url.
-     * @return string
-     * @throws EE_Error
-     */
-    public function payment_overview_url($clear_session = false)
-    {
-        return add_query_arg(array(
-            'e_reg_url_link' => $this->reg_url_link(),
-            'step'           => 'payment_options',
-            'revisit'        => true,
-            'clear_session' => (bool) $clear_session
-        ), EE_Registry::instance()->CFG->core->reg_page_url());
-    }
-
-
-    /**
-     * Gets the URL of the thank you page with this registration REG_url_link added as
-     * a query parameter
-     *
-     * @return string
-     * @throws EE_Error
-     */
-    public function edit_attendee_information_url()
-    {
-        return add_query_arg(array(
-            'e_reg_url_link' => $this->reg_url_link(),
-            'step'           => 'attendee_information',
-            'revisit'        => true,
-        ), EE_Registry::instance()->CFG->core->reg_page_url());
-    }
-
-
-    /**
-     * Simply generates and returns the appropriate admin_url link to edit this registration
-     *
-     * @return string
-     * @throws EE_Error
-     */
-    public function get_admin_edit_url()
-    {
-        return EEH_URL::add_query_args_and_nonce(array(
-            'page'    => 'espresso_registrations',
-            'action'  => 'view_registration',
-            '_REG_ID' => $this->ID(),
-        ), admin_url('admin.php'));
-    }
-
-
-    /**
-     *    is_primary_registrant?
-     */
-    public function is_primary_registrant()
-    {
-        return $this->get('REG_count') == 1 ? true : false;
-    }
-
-
-    /**
-     * This returns the primary registration object for this registration group (which may be this object).
-     *
-     * @return EE_Registration
-     * @throws EE_Error
-     */
-    public function get_primary_registration()
-    {
-        if ($this->is_primary_registrant()) {
-            return $this;
-        }
-
-        //k reg_count !== 1 so let's get the EE_Registration object matching this txn_id and reg_count == 1
-        /** @var EE_Registration $primary_registrant */
-        $primary_registrant = EEM_Registration::instance()->get_one(array(
-            array(
-                'TXN_ID'    => $this->transaction_ID(),
-                'REG_count' => 1,
-            ),
-        ));
-        return $primary_registrant;
-    }
-
-
-    /**
-     *        get  Attendee Number
-     *
-     * @access        public
-     */
-    public function count()
-    {
-        return $this->get('REG_count');
-    }
-
-
-    /**
-     *        get Group Size
-     */
-    public function group_size()
-    {
-        return $this->get('REG_group_size');
-    }
-
-
-    /**
-     *        get Registration Date
-     */
-    public function date()
-    {
-        return $this->get('REG_date');
-    }
-
-
-    /**
-     * gets a pretty date
-     *
-     * @param string $date_format
-     * @param string $time_format
-     * @return string
-     * @throws EE_Error
-     */
-    public function pretty_date($date_format = null, $time_format = null)
-    {
-        return $this->get_datetime('REG_date', $date_format, $time_format);
-    }
-
-
-    /**
-     * final_price
-     * the registration's share of the transaction total, so that the
-     * sum of all the transaction's REG_final_prices equal the transaction's total
-     *
-     * @return float
-     * @throws EE_Error
-     */
-    public function final_price()
-    {
-        return $this->get('REG_final_price');
-    }
-
-
-    /**
-     * pretty_final_price
-     *  final price as formatted string, with correct decimal places and currency symbol
-     *
-     * @return string
-     * @throws EE_Error
-     */
-    public function pretty_final_price()
-    {
-        return $this->get_pretty('REG_final_price');
-    }
-
-
-    /**
-     * get paid (yeah)
-     *
-     * @return float
-     * @throws EE_Error
-     */
-    public function paid()
-    {
-        return $this->get('REG_paid');
-    }
-
-
-    /**
-     * pretty_paid
-     *
-     * @return float
-     * @throws EE_Error
-     */
-    public function pretty_paid()
-    {
-        return $this->get_pretty('REG_paid');
-    }
-
-
-    /**
-     * owes_monies_and_can_pay
-     * whether or not this registration has monies owing and it's' status allows payment
-     *
-     * @param array $requires_payment
-     * @return bool
-     * @throws EE_Error
-     */
-    public function owes_monies_and_can_pay($requires_payment = array())
-    {
-        // these reg statuses require payment (if event is not free)
-        $requires_payment = ! empty($requires_payment)
-            ? $requires_payment
-            : EEM_Registration::reg_statuses_that_allow_payment();
-        if (in_array($this->status_ID(), $requires_payment) &&
-            $this->final_price() != 0 &&
-            $this->final_price() != $this->paid()
-        ) {
-            return true;
-        } else {
-            return false;
-        }
-    }
-
-
-    /**
-     * Prints out the return value of $this->pretty_status()
-     *
-     * @param bool $show_icons
-     * @return void
-     * @throws EE_Error
-     */
-    public function e_pretty_status($show_icons = false)
-    {
-        echo $this->pretty_status($show_icons);
-    }
-
-
-    /**
-     * Returns a nice version of the status for displaying to customers
-     *
-     * @param bool $show_icons
-     * @return string
-     * @throws EE_Error
-     */
-    public function pretty_status($show_icons = false)
-    {
-        $status = EEM_Status::instance()->localized_status(
-            array($this->status_ID() => esc_html__('unknown', 'event_espresso')),
-            false,
-            'sentence'
-        );
-        $icon   = '';
-        switch ($this->status_ID()) {
-            case EEM_Registration::status_id_approved:
-                $icon = $show_icons
-                    ? '<span class="dashicons dashicons-star-filled ee-icon-size-16 green-text"></span>'
-                    : '';
-                break;
-            case EEM_Registration::status_id_pending_payment:
-                $icon = $show_icons
-                    ? '<span class="dashicons dashicons-star-half ee-icon-size-16 orange-text"></span>'
-                    : '';
-                break;
-            case EEM_Registration::status_id_not_approved:
-                $icon = $show_icons
-                    ? '<span class="dashicons dashicons-marker ee-icon-size-16 orange-text"></span>'
-                    : '';
-                break;
-            case EEM_Registration::status_id_cancelled:
-                $icon = $show_icons
-                    ? '<span class="dashicons dashicons-no ee-icon-size-16 lt-grey-text"></span>'
-                    : '';
-                break;
-            case EEM_Registration::status_id_incomplete:
-                $icon = $show_icons
-                    ? '<span class="dashicons dashicons-no ee-icon-size-16 lt-orange-text"></span>'
-                    : '';
-                break;
-            case EEM_Registration::status_id_declined:
-                $icon = $show_icons
-                    ? '<span class="dashicons dashicons-no ee-icon-size-16 red-text"></span>'
-                    : '';
-                break;
-            case EEM_Registration::status_id_wait_list:
-                $icon = $show_icons
-                    ? '<span class="dashicons dashicons-clipboard ee-icon-size-16 purple-text"></span>'
-                    : '';
-                break;
-        }
-        return $icon . $status[$this->status_ID()];
-    }
-
-
-    /**
-     *        get Attendee Is Going
-     */
-    public function att_is_going()
-    {
-        return $this->get('REG_att_is_going');
-    }
-
-
-    /**
-     * Gets related answers
-     *
-     * @param array $query_params like EEM_Base::get_all
-     * @return EE_Answer[]
-     * @throws EE_Error
-     */
-    public function answers($query_params = null)
-    {
-        return $this->get_many_related('Answer', $query_params);
-    }
-
-
-    /**
-     * Gets the registration's answer value to the specified question
-     * (either the question's ID or a question object)
-     *
-     * @param EE_Question|int $question
-     * @param bool            $pretty_value
-     * @return array|string if pretty_value= true, the result will always be a string
-     * (because the answer might be an array of answer values, so passing pretty_value=true
-     * will convert it into some kind of string)
-     * @throws EE_Error
-     */
-    public function answer_value_to_question($question, $pretty_value = true)
-    {
-        $question_id = EEM_Question::instance()->ensure_is_ID($question);
-        return EEM_Answer::instance()->get_answer_value_to_question($this, $question_id, $pretty_value);
-    }
-
-
-    /**
-     * question_groups
-     * returns an array of EE_Question_Group objects for this registration
-     *
-     * @return EE_Question_Group[]
-     * @throws EE_Error
-     * @throws EntityNotFoundException
-     */
-    public function question_groups()
-    {
-        $question_groups = array();
-        if ($this->event() instanceof EE_Event) {
-            $question_groups = $this->event()->question_groups(
-                array(
-                    array(
-                        'Event_Question_Group.EQG_primary' => $this->count() == 1 ? true : false,
-                    ),
-                    'order_by' => array('QSG_order' => 'ASC'),
-                )
-            );
-        }
-        return $question_groups;
-    }
-
-
-    /**
-     * count_question_groups
-     * returns a count of the number of EE_Question_Group objects for this registration
-     *
-     * @return int
-     * @throws EE_Error
-     * @throws EntityNotFoundException
-     */
-    public function count_question_groups()
-    {
-        $qg_count = 0;
-        if ($this->event() instanceof EE_Event) {
-            $qg_count = $this->event()->count_related(
-                'Question_Group',
-                array(
-                    array(
-                        'Event_Question_Group.EQG_primary' => $this->count() == 1 ? true : false,
-                    ),
-                )
-            );
-        }
-        return $qg_count;
-    }
-
-
-    /**
-     * Returns the registration date in the 'standard' string format
-     * (function may be improved in the future to allow for different formats and timezones)
-     *
-     * @return string
-     * @throws EE_Error
-     */
-    public function reg_date()
-    {
-        return $this->get_datetime('REG_date');
-    }
-
-
-    /**
-     * Gets the datetime-ticket for this registration (ie, it can be used to isolate
-     * the ticket this registration purchased, or the datetime they have registered
-     * to attend)
-     *
-     * @return EE_Datetime_Ticket
-     * @throws EE_Error
-     */
-    public function datetime_ticket()
-    {
-        return $this->get_first_related('Datetime_Ticket');
-    }
-
-
-    /**
-     * Sets the registration's datetime_ticket.
-     *
-     * @param EE_Datetime_Ticket $datetime_ticket
-     * @return EE_Datetime_Ticket
-     * @throws EE_Error
-     */
-    public function set_datetime_ticket($datetime_ticket)
-    {
-        return $this->_add_relation_to($datetime_ticket, 'Datetime_Ticket');
-    }
-
-    /**
-     * Gets deleted
-     *
-     * @return bool
-     * @throws EE_Error
-     */
-    public function deleted()
-    {
-        return $this->get('REG_deleted');
-    }
-
-    /**
-     * Sets deleted
-     *
-     * @param boolean $deleted
-     * @return bool
-     * @throws EE_Error
-     * @throws RuntimeException
-     */
-    public function set_deleted($deleted)
-    {
-        if ($deleted) {
-            $this->delete();
-        } else {
-            $this->restore();
-        }
-    }
-
-
-    /**
-     * Get the status object of this object
-     *
-     * @return EE_Status
-     * @throws EE_Error
-     */
-    public function status_obj()
-    {
-        return $this->get_first_related('Status');
-    }
-
-
-    /**
-     * Returns the number of times this registration has checked into any of the datetimes
-     * its available for
-     *
-     * @return int
-     * @throws EE_Error
-     */
-    public function count_checkins()
-    {
-        return $this->get_model()->count_related($this, 'Checkin');
-    }
-
-
-    /**
-     * Returns the number of current Check-ins this registration is checked into for any of the datetimes the
-     * registration is for.  Note, this is ONLY checked in (does not include checkedout)
-     *
-     * @return int
-     * @throws EE_Error
-     */
-    public function count_checkins_not_checkedout()
-    {
-        return $this->get_model()->count_related($this, 'Checkin', array(array('CHK_in' => 1)));
-    }
-
-
-    /**
-     * The purpose of this method is simply to check whether this registration can checkin to the given datetime.
-     *
-     * @param int | EE_Datetime $DTT_OR_ID      The datetime the registration is being checked against
-     * @param bool              $check_approved This is used to indicate whether the caller wants can_checkin to also
-     *                                          consider registration status as well as datetime access.
-     * @return bool
-     * @throws EE_Error
-     */
-    public function can_checkin($DTT_OR_ID, $check_approved = true)
-    {
-        $DTT_ID = EEM_Datetime::instance()->ensure_is_ID($DTT_OR_ID);
-
-        //first check registration status
-        if (($check_approved && ! $this->is_approved()) || ! $DTT_ID) {
-            return false;
-        }
-        //is there a datetime ticket that matches this dtt_ID?
-        if (! (EEM_Datetime_Ticket::instance()->exists(array(
-            array(
-                'TKT_ID' => $this->get('TKT_ID'),
-                'DTT_ID' => $DTT_ID,
-            ),
-        )))
-        ) {
-            return false;
-        }
-
-        //final check is against TKT_uses
-        return $this->verify_can_checkin_against_TKT_uses($DTT_ID);
-    }
-
-
-    /**
-     * This method verifies whether the user can checkin for the given datetime considering the max uses value set on
-     * the ticket. To do this,  a query is done to get the count of the datetime records already checked into.  If the
-     * datetime given does not have a check-in record and checking in for that datetime will exceed the allowed uses,
-     * then return false.  Otherwise return true.
-     *
-     * @param int | EE_Datetime $DTT_OR_ID The datetime the registration is being checked against
-     * @return bool true means can checkin.  false means cannot checkin.
-     * @throws EE_Error
-     */
-    public function verify_can_checkin_against_TKT_uses($DTT_OR_ID)
-    {
-        $DTT_ID = EEM_Datetime::instance()->ensure_is_ID($DTT_OR_ID);
-
-        if (! $DTT_ID) {
-            return false;
-        }
-
-        $max_uses = $this->ticket() instanceof EE_Ticket ? $this->ticket()->uses() : EE_INF;
-
-        // if max uses is not set or equals infinity then return true cause its not a factor for whether user can
-        // check-in or not.
-        if (! $max_uses || $max_uses === EE_INF) {
-            return true;
-        }
-
-        //does this datetime have a checkin record?  If so, then the dtt count has already been verified so we can just
-        //go ahead and toggle.
-        if (EEM_Checkin::instance()->exists(array(array('REG_ID' => $this->ID(), 'DTT_ID' => $DTT_ID)))) {
-            return true;
-        }
-
-        //made it here so the last check is whether the number of checkins per unique datetime on this registration
-        //disallows further check-ins.
-        $count_unique_dtt_checkins = EEM_Checkin::instance()->count(array(
-            array(
-                'REG_ID' => $this->ID(),
-                'CHK_in' => true,
-            ),
-        ), 'DTT_ID', true);
-        // checkins have already reached their max number of uses
-        // so registrant can NOT checkin
-        if ($count_unique_dtt_checkins >= $max_uses) {
-            EE_Error::add_error(
-                esc_html__(
-                    'Check-in denied because number of datetime uses for the ticket has been reached or exceeded.',
-                    'event_espresso'
-                ),
-                __FILE__,
-                __FUNCTION__,
-                __LINE__
-            );
-            return false;
-        }
-        return true;
-    }
-
-
-    /**
-     * toggle Check-in status for this registration
-     * Check-ins are toggled in the following order:
-     * never checked in -> checked in
-     * checked in -> checked out
-     * checked out -> checked in
-     *
-     * @param  int $DTT_ID  include specific datetime to toggle Check-in for.
-     *                      If not included or null, then it is assumed latest datetime is being toggled.
-     * @param bool $verify  If true then can_checkin() is used to verify whether the person
-     *                      can be checked in or not.  Otherwise this forces change in checkin status.
-     * @return bool|int     the chk_in status toggled to OR false if nothing got changed.
-     * @throws EE_Error
-     */
-    public function toggle_checkin_status($DTT_ID = null, $verify = false)
-    {
-        if (empty($DTT_ID)) {
-            $datetime = $this->get_latest_related_datetime();
-            $DTT_ID   = $datetime instanceof EE_Datetime ? $datetime->ID() : 0;
-            // verify the registration can checkin for the given DTT_ID
-        } elseif (! $this->can_checkin($DTT_ID, $verify)) {
-            EE_Error::add_error(
-                sprintf(
-                    esc_html__(
-                        'The given registration (ID:%1$d) can not be checked in to the given DTT_ID (%2$d), because the registration does not have access',
-                        'event_espresso'
-                    ),
-                    $this->ID(),
-                    $DTT_ID
-                ),
-                __FILE__,
-                __FUNCTION__,
-                __LINE__
-            );
-            return false;
-        }
-        $status_paths = array(
-            EE_Registration::checkin_status_never => EE_Registration::checkin_status_in,
-            EE_Registration::checkin_status_in    => EE_Registration::checkin_status_out,
-            EE_Registration::checkin_status_out   => EE_Registration::checkin_status_in,
-        );
-        //start by getting the current status so we know what status we'll be changing to.
-        $cur_status = $this->check_in_status_for_datetime($DTT_ID, null);
-        $status_to  = $status_paths[$cur_status];
-        // database only records true for checked IN or false for checked OUT
-        // no record ( null ) means checked in NEVER, but we obviously don't save that
-        $new_status = $status_to === EE_Registration::checkin_status_in ? true : false;
-        // add relation - note Check-ins are always creating new rows
-        // because we are keeping track of Check-ins over time.
-        // Eventually we'll probably want to show a list table
-        // for the individual Check-ins so that they can be managed.
-        $checkin = EE_Checkin::new_instance(array(
-            'REG_ID' => $this->ID(),
-            'DTT_ID' => $DTT_ID,
-            'CHK_in' => $new_status,
-        ));
-        // if the record could not be saved then return false
-        if ($checkin->save() === 0) {
-            if (WP_DEBUG) {
-                global $wpdb;
-                $error = sprintf(
-                    esc_html__(
-                        'Registration check in update failed because of the following database error: %1$s%2$s',
-                        'event_espresso'
-                    ),
-                    '<br />',
-                    $wpdb->last_error
-                );
-            } else {
-                $error = esc_html__(
-                    'Registration check in update failed because of an unknown database error',
-                    'event_espresso'
-                );
-            }
-            EE_Error::add_error($error, __FILE__, __FUNCTION__, __LINE__);
-            return false;
-        }
-        return $status_to;
-    }
-
-
-    /**
-     * Returns the latest datetime related to this registration (via the ticket attached to the registration).
-     * "Latest" is defined by the `DTT_EVT_start` column.
-     *
-     * @return EE_Datetime|null
-     * @throws \EE_Error
-     */
-    public function get_latest_related_datetime()
-    {
-        return EEM_Datetime::instance()->get_one(
-            array(
-                array(
-                    'Ticket.Registration.REG_ID' => $this->ID(),
-                ),
-                'order_by' => array('DTT_EVT_start' => 'DESC'),
-            )
-        );
-    }
-
-
-    /**
-     * Returns the earliest datetime related to this registration (via the ticket attached to the registration).
-     * "Earliest" is defined by the `DTT_EVT_start` column.
-     *
-     * @throws \EE_Error
-     */
-    public function get_earliest_related_datetime()
-    {
-        return EEM_Datetime::instance()->get_one(
-            array(
-                array(
-                    'Ticket.Registration.REG_ID' => $this->ID(),
-                ),
-                'order_by' => array('DTT_EVT_start' => 'ASC'),
-            )
-        );
-    }
-
-
-    /**
-     * This method simply returns the check-in status for this registration and the given datetime.
-     * If neither the datetime nor the checkin values are provided as arguments,
-     * then this will return the LATEST check-in status for the registration across all datetimes it belongs to.
-     *
-     * @param  int       $DTT_ID  The ID of the datetime we're checking against
-     *                            (if empty we'll get the primary datetime for
-     *                            this registration (via event) and use it's ID);
-     * @param EE_Checkin $checkin If present, we use the given checkin object rather than the dtt_id.
-     * @return int                Integer representing Check-in status.
-     * @throws \EE_Error
-     */
-    public function check_in_status_for_datetime($DTT_ID = 0, $checkin = null)
-    {
-        $checkin_query_params = array(
-            'order_by' => array('CHK_timestamp' => 'DESC'),
-        );
-
-        if ($DTT_ID > 0) {
-            $checkin_query_params[0] = array('DTT_ID' => $DTT_ID);
-        }
-
-        //get checkin object (if exists)
-        $checkin = $checkin instanceof EE_Checkin
-            ? $checkin
-            : $this->get_first_related('Checkin', $checkin_query_params);
-        if ($checkin instanceof EE_Checkin) {
-            if ($checkin->get('CHK_in')) {
-                return EE_Registration::checkin_status_in; //checked in
-            }
-            return EE_Registration::checkin_status_out; //had checked in but is now checked out.
-        }
-        return EE_Registration::checkin_status_never; //never been checked in
-    }
-
-
-    /**
-     * This method returns a localized message for the toggled Check-in message.
-     *
-     * @param  int $DTT_ID include specific datetime to get the correct Check-in message.  If not included or null,
-     *                     then it is assumed Check-in for primary datetime was toggled.
-     * @param bool $error  This just flags that you want an error message returned. This is put in so that the error
-     *                     message can be customized with the attendee name.
-     * @return string internationalized message
-     * @throws EE_Error
-     */
-    public function get_checkin_msg($DTT_ID, $error = false)
-    {
-        //let's get the attendee first so we can include the name of the attendee
-        $attendee = $this->get_first_related('Attendee');
-        if ($attendee instanceof EE_Attendee) {
-            if ($error) {
-                return sprintf(__("%s's check-in status was not changed.", "event_espresso"), $attendee->full_name());
-            }
-            $cur_status = $this->check_in_status_for_datetime($DTT_ID);
-            //what is the status message going to be?
-            switch ($cur_status) {
-                case EE_Registration::checkin_status_never:
-                    return sprintf(__("%s has been removed from Check-in records", "event_espresso"),
-                        $attendee->full_name());
-                    break;
-                case EE_Registration::checkin_status_in:
-                    return sprintf(__('%s has been checked in', 'event_espresso'), $attendee->full_name());
-                    break;
-                case EE_Registration::checkin_status_out:
-                    return sprintf(__('%s has been checked out', 'event_espresso'), $attendee->full_name());
-                    break;
-            }
-        }
-        return esc_html__("The check-in status could not be determined.", "event_espresso");
-    }
-
-
-    /**
-     * Returns the related EE_Transaction to this registration
-     *
-     * @return EE_Transaction
-     * @throws EE_Error
-     * @throws EntityNotFoundException
-     */
-    public function transaction()
-    {
-        $transaction = $this->get_first_related('Transaction');
-        if (! $transaction instanceof \EE_Transaction) {
-            throw new EntityNotFoundException('Transaction ID', $this->transaction_ID());
-        }
-        return $transaction;
-    }
-
-
-    /**
-     *        get Registration Code
-     */
-    public function reg_code()
-    {
-        return $this->get('REG_code');
-    }
-
-
-    /**
-     *        get Transaction ID
-     */
-    public function transaction_ID()
-    {
-        return $this->get('TXN_ID');
-    }
-
-
-    /**
-     * @return int
-     * @throws EE_Error
-     */
-    public function ticket_ID()
-    {
-        return $this->get('TKT_ID');
-    }
-
-
-    /**
-     *        Set Registration Code
-     *
-     * @access    public
-     * @param    string  $REG_code Registration Code
-     * @param    boolean $use_default
-     * @throws EE_Error
-     */
-    public function set_reg_code($REG_code, $use_default = false)
-    {
-        if (empty($REG_code)) {
-            EE_Error::add_error(
-                esc_html__('REG_code can not be empty.', 'event_espresso'),
-                __FILE__,
-                __FUNCTION__,
-                __LINE__
-            );
-            return;
-        }
-        if (! $this->reg_code()) {
-            parent::set('REG_code', $REG_code, $use_default);
-        } else {
-            EE_Error::doing_it_wrong(
-                __CLASS__ . '::' . __FUNCTION__,
-                esc_html__('Can not change a registration REG_code once it has been set.', 'event_espresso'),
-                '4.6.0'
-            );
-        }
-    }
-
-
-    /**
-     * Returns all other registrations in the same group as this registrant who have the same ticket option.
-     * Note, if you want to just get all registrations in the same transaction (group), use:
-     *    $registration->transaction()->registrations();
-     *
-     * @since 4.5.0
-     * @return EE_Registration[] or empty array if this isn't a group registration.
-     * @throws EE_Error
-     */
-    public function get_all_other_registrations_in_group()
-    {
-        if ($this->group_size() < 2) {
-            return array();
-        }
-
-        $query[0] = array(
-            'TXN_ID' => $this->transaction_ID(),
-            'REG_ID' => array('!=', $this->ID()),
-            'TKT_ID' => $this->ticket_ID(),
-        );
-        /** @var EE_Registration[] $registrations */
-        $registrations = $this->get_model()->get_all($query);
-        return $registrations;
-    }
-
-    /**
-     * Return the link to the admin details for the object.
-     *
-     * @return string
-     * @throws EE_Error
-     */
-    public function get_admin_details_link()
-    {
-        EE_Registry::instance()->load_helper('URL');
-        return EEH_URL::add_query_args_and_nonce(
-            array(
-                'page'    => 'espresso_registrations',
-                'action'  => 'view_registration',
-                '_REG_ID' => $this->ID(),
-            ),
-            admin_url('admin.php')
-        );
-    }
-
-    /**
-     * Returns the link to the editor for the object.  Sometimes this is the same as the details.
-     *
-     * @return string
-     * @throws EE_Error
-     */
-    public function get_admin_edit_link()
-    {
-        return $this->get_admin_details_link();
-    }
-
-    /**
-     * Returns the link to a settings page for the object.
-     *
-     * @return string
-     * @throws EE_Error
-     */
-    public function get_admin_settings_link()
-    {
-        return $this->get_admin_details_link();
-    }
-
-    /**
-     * Returns the link to the "overview" for the object (typically the "list table" view).
-     *
-     * @return string
-     */
-    public function get_admin_overview_link()
-    {
-        EE_Registry::instance()->load_helper('URL');
-        return EEH_URL::add_query_args_and_nonce(
-            array(
-                'page' => 'espresso_registrations',
-            ),
-            admin_url('admin.php')
-        );
-    }
-
-
-    /**
-     * @param array $query_params
-     * @return \EE_Registration[]
-     * @throws \EE_Error
-     */
-    public function payments($query_params = array())
-    {
-        return $this->get_many_related('Payment', $query_params);
-    }
-
-
-    /**
-     * @param array $query_params
-     * @return \EE_Registration_Payment[]
-     * @throws \EE_Error
-     */
-    public function registration_payments($query_params = array())
-    {
-        return $this->get_many_related('Registration_Payment', $query_params);
-    }
-
-
-    /**
-     * This grabs the payment method corresponding to the last payment made for the amount owing on the registration.
-     * Note: if there are no payments on the registration there will be no payment method returned.
-     *
-     * @return EE_Payment_Method|null
-     */
-    public function payment_method()
-    {
-        return EEM_Payment_Method::instance()->get_last_used_for_registration($this);
-    }
-
-
-    /**
-     * @return \EE_Line_Item
-     * @throws EntityNotFoundException
-     * @throws \EE_Error
-     */
-    public function ticket_line_item()
-    {
-        $ticket            = $this->ticket();
-        $transaction       = $this->transaction();
-        $line_item         = null;
-        $ticket_line_items = \EEH_Line_Item::get_line_items_by_object_type_and_IDs(
-            $transaction->total_line_item(),
-            'Ticket',
-            array($ticket->ID())
-        );
-        foreach ($ticket_line_items as $ticket_line_item) {
-            if (
-                $ticket_line_item instanceof \EE_Line_Item
-                && $ticket_line_item->OBJ_type() === 'Ticket'
-                && $ticket_line_item->OBJ_ID() === $ticket->ID()
-            ) {
-                $line_item = $ticket_line_item;
-                break;
-            }
-        }
-        if (! ($line_item instanceof \EE_Line_Item && $line_item->OBJ_type() === 'Ticket')) {
-            throw new EntityNotFoundException('Line Item Ticket ID', $ticket->ID());
-        }
-        return $line_item;
-    }
-
-
-    /**
-     * Soft Deletes this model object.
-     *
-     * @return boolean | int
-     * @throws \RuntimeException
-     * @throws \EE_Error
-     */
-    public function delete()
-    {
-        if ($this->update_extra_meta(EE_Registration::PRE_TRASH_REG_STATUS_KEY, $this->status_ID()) === true) {
-            $this->set_status(EEM_Registration::status_id_cancelled);
-        }
-        return parent::delete();
-    }
-
-
-    /**
-     * Restores whatever the previous status was on a registration before it was trashed (if possible)
-     *
-     * @throws \EE_Error
-     * @throws \RuntimeException
-     */
-    public function restore()
-    {
-        $previous_status = $this->get_extra_meta(
-            EE_Registration::PRE_TRASH_REG_STATUS_KEY,
-            true,
-            EEM_Registration::status_id_cancelled
-        );
-        if ($previous_status) {
-            $this->delete_extra_meta(EE_Registration::PRE_TRASH_REG_STATUS_KEY);
-            $this->set_status($previous_status);
-        }
-        return parent::restore();
-    }
-
-
-
-    /*************************** DEPRECATED ***************************/
-
-
-    /**
-     * @deprecated
-     * @since     4.7.0
-     * @access    public
-     */
-    public function price_paid()
-    {
-        EE_Error::doing_it_wrong('EE_Registration::price_paid()',
-            esc_html__('This method is deprecated, please use EE_Registration::final_price() instead.', 'event_espresso'),
-            '4.7.0');
-        return $this->final_price();
-    }
-
-
-    /**
-     * @deprecated
-     * @since     4.7.0
-     * @access    public
-     * @param    float $REG_final_price
-     * @throws EE_Error
-     * @throws RuntimeException
-     */
-    public function set_price_paid($REG_final_price = 0.00)
-    {
-        EE_Error::doing_it_wrong('EE_Registration::set_price_paid()',
-            esc_html__('This method is deprecated, please use EE_Registration::set_final_price() instead.', 'event_espresso'),
-            '4.7.0');
-        $this->set_final_price($REG_final_price);
-    }
-
-
-    /**
-     * @deprecated
-     * @since 4.7.0
-     * @return string
-     * @throws EE_Error
-     */
-    public function pretty_price_paid()
-    {
-        EE_Error::doing_it_wrong('EE_Registration::pretty_price_paid()',
-            esc_html__('This method is deprecated, please use EE_Registration::pretty_final_price() instead.',
-                'event_espresso'), '4.7.0');
-        return $this->pretty_final_price();
-    }
-
-
-    /**
-     * Gets the primary datetime related to this registration via the related Event to this registration
-     *
-     * @deprecated 4.9.17
-     * @return EE_Datetime
-     * @throws EE_Error
-     * @throws EntityNotFoundException
-     */
-    public function get_related_primary_datetime()
-    {
-        EE_Error::doing_it_wrong(
-            __METHOD__,
-            esc_html__(
-                'Use EE_Registration::get_latest_related_datetime() or EE_Registration::get_earliest_related_datetime()',
-                'event_espresso'
-            ),
-            '4.9.17',
-            '5.0.0'
-        );
-        return $this->event()->primary_datetime();
-    }
+	/**
+	 * Used to reference when a registration has never been checked in.
+	 *
+	 * @type int
+	 */
+	const checkin_status_never = 2;
+
+	/**
+	 * Used to reference when a registration has been checked in.
+	 *
+	 * @type int
+	 */
+	const checkin_status_in = 1;
+
+
+	/**
+	 * Used to reference when a registration has been checked out.
+	 *
+	 * @type int
+	 */
+	const checkin_status_out = 0;
+
+
+	/**
+	 * extra meta key for tracking reg status os trashed registrations
+	 *
+	 * @type string
+	 */
+	const PRE_TRASH_REG_STATUS_KEY = 'pre_trash_registration_status';
+
+
+	/**
+	 * extra meta key for tracking if registration has reserved ticket
+	 *
+	 * @type string
+	 */
+	const HAS_RESERVED_TICKET_KEY = 'has_reserved_ticket';
+
+
+
+	/**
+	 * Set Event ID
+	 *
+	 * @param int $EVT_ID Event ID
+	 * @throws EE_Error
+	 * @throws RuntimeException
+	 */
+	public function set_event($EVT_ID = 0)
+	{
+		$this->set('EVT_ID', $EVT_ID);
+	}
+
+
+
+	/**
+	 * Overrides parent set() method so that all calls to set( 'REG_code', $REG_code ) OR set( 'STS_ID', $STS_ID ) can
+	 * be routed to internal methods
+	 *
+	 * @param string $field_name
+	 * @param mixed  $field_value
+	 * @param bool   $use_default
+	 * @throws \EE_Error
+	 * @throws \RuntimeException
+	 */
+	public function set($field_name, $field_value, $use_default = false)
+	{
+		switch ($field_name) {
+			case 'REG_code':
+				if (! empty($field_value) && $this->reg_code() === null) {
+					$this->set_reg_code($field_value, $use_default);
+				}
+				break;
+			case 'STS_ID':
+				$this->set_status($field_value, $use_default);
+				break;
+			default:
+				parent::set($field_name, $field_value, $use_default);
+		}
+	}
+
+
+	/**
+	 * Set Status ID
+	 * updates the registration status and ALSO...
+	 * calls reserve_registration_space() if the reg status changes TO approved from any other reg status
+	 * calls release_registration_space() if the reg status changes FROM approved to any other reg status
+	 *
+	 * @param string  $new_STS_ID
+	 * @param boolean $use_default
+	 * @return bool
+	 * @throws \RuntimeException
+	 * @throws \EE_Error
+	 */
+	public function set_status($new_STS_ID = null, $use_default = false)
+	{
+		// get current REG_Status
+		$old_STS_ID = $this->status_ID();
+		// if status has changed
+		if ($old_STS_ID !== $new_STS_ID // and that status has actually changed
+			&& ! empty($old_STS_ID) // and that old status is actually set
+			&& ! empty($new_STS_ID) // as well as the new status
+			&& $this->ID() // ensure registration is in the db
+		) {
+			// TO approved
+			if ($new_STS_ID === EEM_Registration::status_id_approved) {
+				// reserve a space by incrementing ticket and datetime sold values
+				$this->_reserve_registration_space();
+				do_action('AHEE__EE_Registration__set_status__to_approved', $this, $old_STS_ID, $new_STS_ID);
+				// OR FROM  approved
+			} elseif ($old_STS_ID === EEM_Registration::status_id_approved) {
+				// release a space by decrementing ticket and datetime sold values
+				$this->_release_registration_space();
+				do_action('AHEE__EE_Registration__set_status__from_approved', $this, $old_STS_ID, $new_STS_ID);
+			}
+			// update status
+			parent::set('STS_ID', $new_STS_ID, $use_default);
+			$this->_update_if_canceled_or_declined($new_STS_ID, $old_STS_ID);
+			/** @type EE_Transaction_Payments $transaction_payments */
+			$transaction_payments = EE_Registry::instance()->load_class('Transaction_Payments');
+			$transaction_payments->recalculate_transaction_total($this->transaction(), false);
+			$this->transaction()->update_status_based_on_total_paid(true);
+			do_action('AHEE__EE_Registration__set_status__after_update', $this, $old_STS_ID, $new_STS_ID);
+			return true;
+		}
+		//even though the old value matches the new value, it's still good to
+		//allow the parent set method to have a say
+		parent::set('STS_ID', $new_STS_ID, $use_default);
+		return true;
+	}
+
+
+	/**
+	 * update REGs and TXN when cancelled or declined registrations involved
+	 *
+	 * @param string $new_STS_ID
+	 * @param string $old_STS_ID
+	 * @throws \EE_Error
+	 */
+	private function _update_if_canceled_or_declined($new_STS_ID, $old_STS_ID)
+	{
+		// these reg statuses should not be considered in any calculations involving monies owing
+		$closed_reg_statuses = EEM_Registration::closed_reg_statuses();
+		// true if registration has been cancelled or declined
+		if (in_array($new_STS_ID, $closed_reg_statuses, true)
+			&& ! in_array($old_STS_ID, $closed_reg_statuses, true)
+		) {
+			/** @type EE_Registration_Processor $registration_processor */
+			$registration_processor = EE_Registry::instance()->load_class('Registration_Processor');
+			/** @type EE_Transaction_Processor $transaction_processor */
+			$transaction_processor = EE_Registry::instance()->load_class('Transaction_Processor');
+			// cancelled or declined registration
+			$registration_processor->update_registration_after_being_canceled_or_declined(
+				$this,
+				$closed_reg_statuses
+			);
+			$transaction_processor->update_transaction_after_canceled_or_declined_registration(
+				$this,
+				$closed_reg_statuses,
+				false
+			);
+			do_action('AHEE__EE_Registration__set_status__canceled_or_declined', $this, $old_STS_ID, $new_STS_ID);
+			return;
+		}
+		// true if reinstating cancelled or declined registration
+		if (in_array($old_STS_ID, $closed_reg_statuses, true)
+			&& ! in_array($new_STS_ID, $closed_reg_statuses, true)
+		) {
+			/** @type EE_Registration_Processor $registration_processor */
+			$registration_processor = EE_Registry::instance()->load_class('Registration_Processor');
+			/** @type EE_Transaction_Processor $transaction_processor */
+			$transaction_processor = EE_Registry::instance()->load_class('Transaction_Processor');
+			// reinstating cancelled or declined registration
+			$registration_processor->update_canceled_or_declined_registration_after_being_reinstated(
+				$this,
+				$closed_reg_statuses
+			);
+			$transaction_processor->update_transaction_after_reinstating_canceled_registration(
+				$this,
+				$closed_reg_statuses,
+				false
+			);
+			do_action('AHEE__EE_Registration__set_status__after_reinstated', $this, $old_STS_ID, $new_STS_ID);
+		}
+	}
+
+
+	/**
+	 *        get Status ID
+	 */
+	public function status_ID()
+	{
+		return $this->get('STS_ID');
+	}
+
+
+	/**
+	 * increments this registration's related ticket sold and corresponding datetime sold values
+	 *
+	 * @return void
+	 * @throws EE_Error
+	 * @throws EntityNotFoundException
+	 */
+	private function _reserve_registration_space()
+	{
+		// reserved ticket and datetime counts will be decremented as sold counts are incremented
+		// so stop tracking that this reg has a ticket reserved
+		$this->release_reserved_ticket();
+		$ticket = $this->ticket();
+		$ticket->increase_sold();
+		$ticket->save();
+		// possibly set event status to sold out
+		$this->event()->perform_sold_out_status_check();
+	}
+
+
+	/**
+	 * Gets the ticket this registration is for
+	 *
+	 * @param boolean $include_archived whether to include archived tickets or not.
+	 * @return EE_Ticket|EE_Base_Class
+	 * @throws \EE_Error
+	 */
+	public function ticket($include_archived = true)
+	{
+		$query_params = array();
+		if ($include_archived) {
+			$query_params['default_where_conditions'] = 'none';
+		}
+		return $this->get_first_related('Ticket', $query_params);
+	}
+
+
+	/**
+	 * Gets the event this registration is for
+	 *
+	 * @return EE_Event
+	 * @throws EE_Error
+	 * @throws EntityNotFoundException
+	 */
+	public function event()
+	{
+		$event = $this->get_first_related('Event');
+		if (! $event instanceof \EE_Event) {
+			throw new EntityNotFoundException('Event ID', $this->event_ID());
+		}
+		return $event;
+	}
+
+
+	/**
+	 * Gets the "author" of the registration.  Note that for the purposes of registrations, the author will correspond
+	 * with the author of the event this registration is for.
+	 *
+	 * @since 4.5.0
+	 * @return int
+	 * @throws EE_Error
+	 * @throws EntityNotFoundException
+	 */
+	public function wp_user()
+	{
+		$event = $this->event();
+		if ($event instanceof EE_Event) {
+			return $event->wp_user();
+		}
+		return 0;
+	}
+
+
+	/**
+	 * decrements (subtracts) this registration's related ticket sold and corresponding datetime sold values
+	 *
+	 * @return void
+	 * @throws \EE_Error
+	 */
+	private function _release_registration_space()
+	{
+		$ticket = $this->ticket();
+		$ticket->decrease_sold();
+		$ticket->save();
+	}
+
+
+	/**
+	 * tracks this registration's ticket reservation in extra meta
+	 * and can increment related ticket reserved and corresponding datetime reserved values
+	 *
+	 * @param bool $update_ticket if true, will increment ticket and datetime reserved count
+	 * @return void
+	 * @throws \EE_Error
+	 */
+	public function reserve_ticket($update_ticket = false)
+	{
+		if ($this->get_extra_meta(EE_Registration::HAS_RESERVED_TICKET_KEY, true, false) === false) {
+			// PLZ NOTE: although checking $update_ticket first would be more efficient,
+			// we NEED to ALWAYS call update_extra_meta(), which is why that is done first
+			if ($this->update_extra_meta(EE_Registration::HAS_RESERVED_TICKET_KEY, true, false) && $update_ticket) {
+				$ticket = $this->ticket();
+				$ticket->increase_reserved();
+				$ticket->save();
+			}
+		}
+	}
+
+
+	/**
+	 * stops tracking this registration's ticket reservation in extra meta
+	 * decrements (subtracts) related ticket reserved and corresponding datetime reserved values
+	 *
+	 * @param bool $update_ticket if true, will decrement ticket and datetime reserved count
+	 * @return void
+	 * @throws \EE_Error
+	 */
+	public function release_reserved_ticket($update_ticket = false)
+	{
+		if ($this->get_extra_meta(EE_Registration::HAS_RESERVED_TICKET_KEY, true, false) !== false) {
+			// PLZ NOTE: although checking $update_ticket first would be more efficient,
+			// we NEED to ALWAYS call delete_extra_meta(), which is why that is done first
+			if ($this->delete_extra_meta(EE_Registration::HAS_RESERVED_TICKET_KEY) && $update_ticket) {
+				$ticket = $this->ticket();
+				$ticket->decrease_reserved();
+				$ticket->save();
+			}
+		}
+	}
+
+
+	/**
+	 * Set Attendee ID
+	 *
+	 * @param        int $ATT_ID Attendee ID
+	 * @throws EE_Error
+	 * @throws RuntimeException
+	 */
+	public function set_attendee_id($ATT_ID = 0)
+	{
+		$this->set('ATT_ID', $ATT_ID);
+	}
+
+
+	/**
+	 *        Set Transaction ID
+	 *
+	 * @param        int $TXN_ID Transaction ID
+	 * @throws EE_Error
+	 * @throws RuntimeException
+	 */
+	public function set_transaction_id($TXN_ID = 0)
+	{
+		$this->set('TXN_ID', $TXN_ID);
+	}
+
+
+	/**
+	 *        Set Session
+	 *
+	 * @param    string $REG_session PHP Session ID
+	 * @throws EE_Error
+	 * @throws RuntimeException
+	 */
+	public function set_session($REG_session = '')
+	{
+		$this->set('REG_session', $REG_session);
+	}
+
+
+	/**
+	 *        Set Registration URL Link
+	 *
+	 * @param    string $REG_url_link Registration URL Link
+	 * @throws EE_Error
+	 * @throws RuntimeException
+	 */
+	public function set_reg_url_link($REG_url_link = '')
+	{
+		$this->set('REG_url_link', $REG_url_link);
+	}
+
+
+	/**
+	 *        Set Attendee Counter
+	 *
+	 * @param        int $REG_count Primary Attendee
+	 * @throws EE_Error
+	 * @throws RuntimeException
+	 */
+	public function set_count($REG_count = 1)
+	{
+		$this->set('REG_count', $REG_count);
+	}
+
+
+	/**
+	 *        Set Group Size
+	 *
+	 * @param        boolean $REG_group_size Group Registration
+	 * @throws EE_Error
+	 * @throws RuntimeException
+	 */
+	public function set_group_size($REG_group_size = false)
+	{
+		$this->set('REG_group_size', $REG_group_size);
+	}
+
+
+	/**
+	 *    is_not_approved -  convenience method that returns TRUE if REG status ID ==
+	 *    EEM_Registration::status_id_not_approved
+	 *
+	 * @return        boolean
+	 */
+	public function is_not_approved()
+	{
+		return $this->status_ID() == EEM_Registration::status_id_not_approved ? true : false;
+	}
+
+
+	/**
+	 *    is_pending_payment -  convenience method that returns TRUE if REG status ID ==
+	 *    EEM_Registration::status_id_pending_payment
+	 *
+	 * @return        boolean
+	 */
+	public function is_pending_payment()
+	{
+		return $this->status_ID() == EEM_Registration::status_id_pending_payment ? true : false;
+	}
+
+
+	/**
+	 *    is_approved -  convenience method that returns TRUE if REG status ID == EEM_Registration::status_id_approved
+	 *
+	 * @return        boolean
+	 */
+	public function is_approved()
+	{
+		return $this->status_ID() == EEM_Registration::status_id_approved ? true : false;
+	}
+
+
+	/**
+	 *    is_cancelled -  convenience method that returns TRUE if REG status ID == EEM_Registration::status_id_cancelled
+	 *
+	 * @return        boolean
+	 */
+	public function is_cancelled()
+	{
+		return $this->status_ID() == EEM_Registration::status_id_cancelled ? true : false;
+	}
+
+
+	/**
+	 *    is_declined -  convenience method that returns TRUE if REG status ID == EEM_Registration::status_id_declined
+	 *
+	 * @return        boolean
+	 */
+	public function is_declined()
+	{
+		return $this->status_ID() == EEM_Registration::status_id_declined ? true : false;
+	}
+
+
+	/**
+	 *    is_incomplete -  convenience method that returns TRUE if REG status ID ==
+	 *    EEM_Registration::status_id_incomplete
+	 *
+	 * @return        boolean
+	 */
+	public function is_incomplete()
+	{
+		return $this->status_ID() == EEM_Registration::status_id_incomplete ? true : false;
+	}
+
+
+	/**
+	 *        Set Registration Date
+	 *
+	 * @param        mixed ( int or string ) $REG_date Registration Date - Unix timestamp or string representation of
+	 *                                                 Date
+	 * @throws EE_Error
+	 * @throws RuntimeException
+	 */
+	public function set_reg_date($REG_date = false)
+	{
+		$this->set('REG_date', $REG_date);
+	}
+
+
+	/**
+	 *    Set final price owing for this registration after all ticket/price modifications
+	 *
+	 * @access    public
+	 * @param    float $REG_final_price
+	 * @throws EE_Error
+	 * @throws RuntimeException
+	 */
+	public function set_final_price($REG_final_price = 0.00)
+	{
+		$this->set('REG_final_price', $REG_final_price);
+	}
+
+
+	/**
+	 *    Set amount paid towards this registration's final price
+	 *
+	 * @access    public
+	 * @param    float $REG_paid
+	 * @throws EE_Error
+	 * @throws RuntimeException
+	 */
+	public function set_paid($REG_paid = 0.00)
+	{
+		$this->set('REG_paid', $REG_paid);
+	}
+
+
+	/**
+	 *        Attendee Is Going
+	 *
+	 * @param        boolean $REG_att_is_going Attendee Is Going
+	 * @throws EE_Error
+	 * @throws RuntimeException
+	 */
+	public function set_att_is_going($REG_att_is_going = false)
+	{
+		$this->set('REG_att_is_going', $REG_att_is_going);
+	}
+
+
+	/**
+	 * Gets the related attendee
+	 *
+	 * @return EE_Attendee
+	 * @throws EE_Error
+	 */
+	public function attendee()
+	{
+		return $this->get_first_related('Attendee');
+	}
+
+
+	/**
+	 *        get Event ID
+	 */
+	public function event_ID()
+	{
+		return $this->get('EVT_ID');
+	}
+
+
+	/**
+	 *        get Event ID
+	 */
+	public function event_name()
+	{
+		$event = $this->event_obj();
+		if ($event) {
+			return $event->name();
+		} else {
+			return null;
+		}
+	}
+
+
+	/**
+	 * Fetches the event this registration is for
+	 *
+	 * @return EE_Event
+	 * @throws EE_Error
+	 */
+	public function event_obj()
+	{
+		return $this->get_first_related('Event');
+	}
+
+
+	/**
+	 *        get Attendee ID
+	 */
+	public function attendee_ID()
+	{
+		return $this->get('ATT_ID');
+	}
+
+
+	/**
+	 *        get PHP Session ID
+	 */
+	public function session_ID()
+	{
+		return $this->get('REG_session');
+	}
+
+
+	/**
+	 * Gets the string which represents the URL trigger for the receipt template in the message template system.
+	 *
+	 * @param string $messenger 'pdf' or 'html'.  Default 'html'.
+	 * @return string
+	 */
+	public function receipt_url($messenger = 'html')
+	{
+
+		/**
+		 * The below will be deprecated one version after this.  We check first if there is a custom receipt template
+		 * already in use on old system.  If there is then we just return the standard url for it.
+		 *
+		 * @since 4.5.0
+		 */
+		$template_relative_path = 'modules/gateways/Invoice/lib/templates/receipt_body.template.php';
+		$has_custom             = EEH_Template::locate_template(
+			$template_relative_path,
+			array(),
+			true,
+			true,
+			true
+		);
+
+		if ($has_custom) {
+			return add_query_arg(array('receipt' => 'true'), $this->invoice_url('launch'));
+		}
+		return apply_filters('FHEE__EE_Registration__receipt_url__receipt_url', '', $this, $messenger, 'receipt');
+	}
+
+
+	/**
+	 * Gets the string which represents the URL trigger for the invoice template in the message template system.
+	 *
+	 * @param string $messenger 'pdf' or 'html'.  Default 'html'.
+	 * @return string
+	 * @throws EE_Error
+	 */
+	public function invoice_url($messenger = 'html')
+	{
+		/**
+		 * The below will be deprecated one version after this.  We check first if there is a custom invoice template
+		 * already in use on old system.  If there is then we just return the standard url for it.
+		 *
+		 * @since 4.5.0
+		 */
+		$template_relative_path = 'modules/gateways/Invoice/lib/templates/invoice_body.template.php';
+		$has_custom             = EEH_Template::locate_template(
+			$template_relative_path,
+			array(),
+			true,
+			true,
+			true
+		);
+
+		if ($has_custom) {
+			if ($messenger == 'html') {
+				return $this->invoice_url('launch');
+			}
+			$route = $messenger == 'download' || $messenger == 'pdf' ? 'download_invoice' : 'launch_invoice';
+
+			$query_args = array('ee' => $route, 'id' => $this->reg_url_link());
+			if ($messenger == 'html') {
+				$query_args['html'] = true;
+			}
+			return add_query_arg($query_args, get_permalink(EE_Registry::instance()->CFG->core->thank_you_page_id));
+		}
+		return apply_filters('FHEE__EE_Registration__invoice_url__invoice_url', '', $this, $messenger, 'invoice');
+	}
+
+
+	/**
+	 * get Registration URL Link
+	 *
+	 * @access public
+	 * @return string
+	 * @throws \EE_Error
+	 */
+	public function reg_url_link()
+	{
+		return (string) $this->get('REG_url_link');
+	}
+
+
+	/**
+	 * Echoes out invoice_url()
+	 *
+	 * @param string $type 'download','launch', or 'html' (default is 'launch')
+	 * @return void
+	 * @throws EE_Error
+	 */
+	public function e_invoice_url($type = 'launch')
+	{
+		echo $this->invoice_url($type);
+	}
+
+
+	/**
+	 * Echoes out payment_overview_url
+	 */
+	public function e_payment_overview_url()
+	{
+		echo $this->payment_overview_url();
+	}
+
+
+	/**
+	 * Gets the URL of the thank you page with this registration REG_url_link added as
+	 * a query parameter
+	 *
+	 * @param bool $clear_session Set to true when you want to clear the session on revisiting the
+	 *                            payment overview url.
+	 * @return string
+	 * @throws EE_Error
+	 */
+	public function payment_overview_url($clear_session = false)
+	{
+		return add_query_arg(array(
+			'e_reg_url_link' => $this->reg_url_link(),
+			'step'           => 'payment_options',
+			'revisit'        => true,
+			'clear_session' => (bool) $clear_session
+		), EE_Registry::instance()->CFG->core->reg_page_url());
+	}
+
+
+	/**
+	 * Gets the URL of the thank you page with this registration REG_url_link added as
+	 * a query parameter
+	 *
+	 * @return string
+	 * @throws EE_Error
+	 */
+	public function edit_attendee_information_url()
+	{
+		return add_query_arg(array(
+			'e_reg_url_link' => $this->reg_url_link(),
+			'step'           => 'attendee_information',
+			'revisit'        => true,
+		), EE_Registry::instance()->CFG->core->reg_page_url());
+	}
+
+
+	/**
+	 * Simply generates and returns the appropriate admin_url link to edit this registration
+	 *
+	 * @return string
+	 * @throws EE_Error
+	 */
+	public function get_admin_edit_url()
+	{
+		return EEH_URL::add_query_args_and_nonce(array(
+			'page'    => 'espresso_registrations',
+			'action'  => 'view_registration',
+			'_REG_ID' => $this->ID(),
+		), admin_url('admin.php'));
+	}
+
+
+	/**
+	 *    is_primary_registrant?
+	 */
+	public function is_primary_registrant()
+	{
+		return $this->get('REG_count') == 1 ? true : false;
+	}
+
+
+	/**
+	 * This returns the primary registration object for this registration group (which may be this object).
+	 *
+	 * @return EE_Registration
+	 * @throws EE_Error
+	 */
+	public function get_primary_registration()
+	{
+		if ($this->is_primary_registrant()) {
+			return $this;
+		}
+
+		//k reg_count !== 1 so let's get the EE_Registration object matching this txn_id and reg_count == 1
+		/** @var EE_Registration $primary_registrant */
+		$primary_registrant = EEM_Registration::instance()->get_one(array(
+			array(
+				'TXN_ID'    => $this->transaction_ID(),
+				'REG_count' => 1,
+			),
+		));
+		return $primary_registrant;
+	}
+
+
+	/**
+	 *        get  Attendee Number
+	 *
+	 * @access        public
+	 */
+	public function count()
+	{
+		return $this->get('REG_count');
+	}
+
+
+	/**
+	 *        get Group Size
+	 */
+	public function group_size()
+	{
+		return $this->get('REG_group_size');
+	}
+
+
+	/**
+	 *        get Registration Date
+	 */
+	public function date()
+	{
+		return $this->get('REG_date');
+	}
+
+
+	/**
+	 * gets a pretty date
+	 *
+	 * @param string $date_format
+	 * @param string $time_format
+	 * @return string
+	 * @throws EE_Error
+	 */
+	public function pretty_date($date_format = null, $time_format = null)
+	{
+		return $this->get_datetime('REG_date', $date_format, $time_format);
+	}
+
+
+	/**
+	 * final_price
+	 * the registration's share of the transaction total, so that the
+	 * sum of all the transaction's REG_final_prices equal the transaction's total
+	 *
+	 * @return float
+	 * @throws EE_Error
+	 */
+	public function final_price()
+	{
+		return $this->get('REG_final_price');
+	}
+
+
+	/**
+	 * pretty_final_price
+	 *  final price as formatted string, with correct decimal places and currency symbol
+	 *
+	 * @return string
+	 * @throws EE_Error
+	 */
+	public function pretty_final_price()
+	{
+		return $this->get_pretty('REG_final_price');
+	}
+
+
+	/**
+	 * get paid (yeah)
+	 *
+	 * @return float
+	 * @throws EE_Error
+	 */
+	public function paid()
+	{
+		return $this->get('REG_paid');
+	}
+
+
+	/**
+	 * pretty_paid
+	 *
+	 * @return float
+	 * @throws EE_Error
+	 */
+	public function pretty_paid()
+	{
+		return $this->get_pretty('REG_paid');
+	}
+
+
+	/**
+	 * owes_monies_and_can_pay
+	 * whether or not this registration has monies owing and it's' status allows payment
+	 *
+	 * @param array $requires_payment
+	 * @return bool
+	 * @throws EE_Error
+	 */
+	public function owes_monies_and_can_pay($requires_payment = array())
+	{
+		// these reg statuses require payment (if event is not free)
+		$requires_payment = ! empty($requires_payment)
+			? $requires_payment
+			: EEM_Registration::reg_statuses_that_allow_payment();
+		if (in_array($this->status_ID(), $requires_payment) &&
+			$this->final_price() != 0 &&
+			$this->final_price() != $this->paid()
+		) {
+			return true;
+		} else {
+			return false;
+		}
+	}
+
+
+	/**
+	 * Prints out the return value of $this->pretty_status()
+	 *
+	 * @param bool $show_icons
+	 * @return void
+	 * @throws EE_Error
+	 */
+	public function e_pretty_status($show_icons = false)
+	{
+		echo $this->pretty_status($show_icons);
+	}
+
+
+	/**
+	 * Returns a nice version of the status for displaying to customers
+	 *
+	 * @param bool $show_icons
+	 * @return string
+	 * @throws EE_Error
+	 */
+	public function pretty_status($show_icons = false)
+	{
+		$status = EEM_Status::instance()->localized_status(
+			array($this->status_ID() => esc_html__('unknown', 'event_espresso')),
+			false,
+			'sentence'
+		);
+		$icon   = '';
+		switch ($this->status_ID()) {
+			case EEM_Registration::status_id_approved:
+				$icon = $show_icons
+					? '<span class="dashicons dashicons-star-filled ee-icon-size-16 green-text"></span>'
+					: '';
+				break;
+			case EEM_Registration::status_id_pending_payment:
+				$icon = $show_icons
+					? '<span class="dashicons dashicons-star-half ee-icon-size-16 orange-text"></span>'
+					: '';
+				break;
+			case EEM_Registration::status_id_not_approved:
+				$icon = $show_icons
+					? '<span class="dashicons dashicons-marker ee-icon-size-16 orange-text"></span>'
+					: '';
+				break;
+			case EEM_Registration::status_id_cancelled:
+				$icon = $show_icons
+					? '<span class="dashicons dashicons-no ee-icon-size-16 lt-grey-text"></span>'
+					: '';
+				break;
+			case EEM_Registration::status_id_incomplete:
+				$icon = $show_icons
+					? '<span class="dashicons dashicons-no ee-icon-size-16 lt-orange-text"></span>'
+					: '';
+				break;
+			case EEM_Registration::status_id_declined:
+				$icon = $show_icons
+					? '<span class="dashicons dashicons-no ee-icon-size-16 red-text"></span>'
+					: '';
+				break;
+			case EEM_Registration::status_id_wait_list:
+				$icon = $show_icons
+					? '<span class="dashicons dashicons-clipboard ee-icon-size-16 purple-text"></span>'
+					: '';
+				break;
+		}
+		return $icon . $status[$this->status_ID()];
+	}
+
+
+	/**
+	 *        get Attendee Is Going
+	 */
+	public function att_is_going()
+	{
+		return $this->get('REG_att_is_going');
+	}
+
+
+	/**
+	 * Gets related answers
+	 *
+	 * @param array $query_params like EEM_Base::get_all
+	 * @return EE_Answer[]
+	 * @throws EE_Error
+	 */
+	public function answers($query_params = null)
+	{
+		return $this->get_many_related('Answer', $query_params);
+	}
+
+
+	/**
+	 * Gets the registration's answer value to the specified question
+	 * (either the question's ID or a question object)
+	 *
+	 * @param EE_Question|int $question
+	 * @param bool            $pretty_value
+	 * @return array|string if pretty_value= true, the result will always be a string
+	 * (because the answer might be an array of answer values, so passing pretty_value=true
+	 * will convert it into some kind of string)
+	 * @throws EE_Error
+	 */
+	public function answer_value_to_question($question, $pretty_value = true)
+	{
+		$question_id = EEM_Question::instance()->ensure_is_ID($question);
+		return EEM_Answer::instance()->get_answer_value_to_question($this, $question_id, $pretty_value);
+	}
+
+
+	/**
+	 * question_groups
+	 * returns an array of EE_Question_Group objects for this registration
+	 *
+	 * @return EE_Question_Group[]
+	 * @throws EE_Error
+	 * @throws EntityNotFoundException
+	 */
+	public function question_groups()
+	{
+		$question_groups = array();
+		if ($this->event() instanceof EE_Event) {
+			$question_groups = $this->event()->question_groups(
+				array(
+					array(
+						'Event_Question_Group.EQG_primary' => $this->count() == 1 ? true : false,
+					),
+					'order_by' => array('QSG_order' => 'ASC'),
+				)
+			);
+		}
+		return $question_groups;
+	}
+
+
+	/**
+	 * count_question_groups
+	 * returns a count of the number of EE_Question_Group objects for this registration
+	 *
+	 * @return int
+	 * @throws EE_Error
+	 * @throws EntityNotFoundException
+	 */
+	public function count_question_groups()
+	{
+		$qg_count = 0;
+		if ($this->event() instanceof EE_Event) {
+			$qg_count = $this->event()->count_related(
+				'Question_Group',
+				array(
+					array(
+						'Event_Question_Group.EQG_primary' => $this->count() == 1 ? true : false,
+					),
+				)
+			);
+		}
+		return $qg_count;
+	}
+
+
+	/**
+	 * Returns the registration date in the 'standard' string format
+	 * (function may be improved in the future to allow for different formats and timezones)
+	 *
+	 * @return string
+	 * @throws EE_Error
+	 */
+	public function reg_date()
+	{
+		return $this->get_datetime('REG_date');
+	}
+
+
+	/**
+	 * Gets the datetime-ticket for this registration (ie, it can be used to isolate
+	 * the ticket this registration purchased, or the datetime they have registered
+	 * to attend)
+	 *
+	 * @return EE_Datetime_Ticket
+	 * @throws EE_Error
+	 */
+	public function datetime_ticket()
+	{
+		return $this->get_first_related('Datetime_Ticket');
+	}
+
+
+	/**
+	 * Sets the registration's datetime_ticket.
+	 *
+	 * @param EE_Datetime_Ticket $datetime_ticket
+	 * @return EE_Datetime_Ticket
+	 * @throws EE_Error
+	 */
+	public function set_datetime_ticket($datetime_ticket)
+	{
+		return $this->_add_relation_to($datetime_ticket, 'Datetime_Ticket');
+	}
+
+	/**
+	 * Gets deleted
+	 *
+	 * @return bool
+	 * @throws EE_Error
+	 */
+	public function deleted()
+	{
+		return $this->get('REG_deleted');
+	}
+
+	/**
+	 * Sets deleted
+	 *
+	 * @param boolean $deleted
+	 * @return bool
+	 * @throws EE_Error
+	 * @throws RuntimeException
+	 */
+	public function set_deleted($deleted)
+	{
+		if ($deleted) {
+			$this->delete();
+		} else {
+			$this->restore();
+		}
+	}
+
+
+	/**
+	 * Get the status object of this object
+	 *
+	 * @return EE_Status
+	 * @throws EE_Error
+	 */
+	public function status_obj()
+	{
+		return $this->get_first_related('Status');
+	}
+
+
+	/**
+	 * Returns the number of times this registration has checked into any of the datetimes
+	 * its available for
+	 *
+	 * @return int
+	 * @throws EE_Error
+	 */
+	public function count_checkins()
+	{
+		return $this->get_model()->count_related($this, 'Checkin');
+	}
+
+
+	/**
+	 * Returns the number of current Check-ins this registration is checked into for any of the datetimes the
+	 * registration is for.  Note, this is ONLY checked in (does not include checkedout)
+	 *
+	 * @return int
+	 * @throws EE_Error
+	 */
+	public function count_checkins_not_checkedout()
+	{
+		return $this->get_model()->count_related($this, 'Checkin', array(array('CHK_in' => 1)));
+	}
+
+
+	/**
+	 * The purpose of this method is simply to check whether this registration can checkin to the given datetime.
+	 *
+	 * @param int | EE_Datetime $DTT_OR_ID      The datetime the registration is being checked against
+	 * @param bool              $check_approved This is used to indicate whether the caller wants can_checkin to also
+	 *                                          consider registration status as well as datetime access.
+	 * @return bool
+	 * @throws EE_Error
+	 */
+	public function can_checkin($DTT_OR_ID, $check_approved = true)
+	{
+		$DTT_ID = EEM_Datetime::instance()->ensure_is_ID($DTT_OR_ID);
+
+		//first check registration status
+		if (($check_approved && ! $this->is_approved()) || ! $DTT_ID) {
+			return false;
+		}
+		//is there a datetime ticket that matches this dtt_ID?
+		if (! (EEM_Datetime_Ticket::instance()->exists(array(
+			array(
+				'TKT_ID' => $this->get('TKT_ID'),
+				'DTT_ID' => $DTT_ID,
+			),
+		)))
+		) {
+			return false;
+		}
+
+		//final check is against TKT_uses
+		return $this->verify_can_checkin_against_TKT_uses($DTT_ID);
+	}
+
+
+	/**
+	 * This method verifies whether the user can checkin for the given datetime considering the max uses value set on
+	 * the ticket. To do this,  a query is done to get the count of the datetime records already checked into.  If the
+	 * datetime given does not have a check-in record and checking in for that datetime will exceed the allowed uses,
+	 * then return false.  Otherwise return true.
+	 *
+	 * @param int | EE_Datetime $DTT_OR_ID The datetime the registration is being checked against
+	 * @return bool true means can checkin.  false means cannot checkin.
+	 * @throws EE_Error
+	 */
+	public function verify_can_checkin_against_TKT_uses($DTT_OR_ID)
+	{
+		$DTT_ID = EEM_Datetime::instance()->ensure_is_ID($DTT_OR_ID);
+
+		if (! $DTT_ID) {
+			return false;
+		}
+
+		$max_uses = $this->ticket() instanceof EE_Ticket ? $this->ticket()->uses() : EE_INF;
+
+		// if max uses is not set or equals infinity then return true cause its not a factor for whether user can
+		// check-in or not.
+		if (! $max_uses || $max_uses === EE_INF) {
+			return true;
+		}
+
+		//does this datetime have a checkin record?  If so, then the dtt count has already been verified so we can just
+		//go ahead and toggle.
+		if (EEM_Checkin::instance()->exists(array(array('REG_ID' => $this->ID(), 'DTT_ID' => $DTT_ID)))) {
+			return true;
+		}
+
+		//made it here so the last check is whether the number of checkins per unique datetime on this registration
+		//disallows further check-ins.
+		$count_unique_dtt_checkins = EEM_Checkin::instance()->count(array(
+			array(
+				'REG_ID' => $this->ID(),
+				'CHK_in' => true,
+			),
+		), 'DTT_ID', true);
+		// checkins have already reached their max number of uses
+		// so registrant can NOT checkin
+		if ($count_unique_dtt_checkins >= $max_uses) {
+			EE_Error::add_error(
+				esc_html__(
+					'Check-in denied because number of datetime uses for the ticket has been reached or exceeded.',
+					'event_espresso'
+				),
+				__FILE__,
+				__FUNCTION__,
+				__LINE__
+			);
+			return false;
+		}
+		return true;
+	}
+
+
+	/**
+	 * toggle Check-in status for this registration
+	 * Check-ins are toggled in the following order:
+	 * never checked in -> checked in
+	 * checked in -> checked out
+	 * checked out -> checked in
+	 *
+	 * @param  int $DTT_ID  include specific datetime to toggle Check-in for.
+	 *                      If not included or null, then it is assumed latest datetime is being toggled.
+	 * @param bool $verify  If true then can_checkin() is used to verify whether the person
+	 *                      can be checked in or not.  Otherwise this forces change in checkin status.
+	 * @return bool|int     the chk_in status toggled to OR false if nothing got changed.
+	 * @throws EE_Error
+	 */
+	public function toggle_checkin_status($DTT_ID = null, $verify = false)
+	{
+		if (empty($DTT_ID)) {
+			$datetime = $this->get_latest_related_datetime();
+			$DTT_ID   = $datetime instanceof EE_Datetime ? $datetime->ID() : 0;
+			// verify the registration can checkin for the given DTT_ID
+		} elseif (! $this->can_checkin($DTT_ID, $verify)) {
+			EE_Error::add_error(
+				sprintf(
+					esc_html__(
+						'The given registration (ID:%1$d) can not be checked in to the given DTT_ID (%2$d), because the registration does not have access',
+						'event_espresso'
+					),
+					$this->ID(),
+					$DTT_ID
+				),
+				__FILE__,
+				__FUNCTION__,
+				__LINE__
+			);
+			return false;
+		}
+		$status_paths = array(
+			EE_Registration::checkin_status_never => EE_Registration::checkin_status_in,
+			EE_Registration::checkin_status_in    => EE_Registration::checkin_status_out,
+			EE_Registration::checkin_status_out   => EE_Registration::checkin_status_in,
+		);
+		//start by getting the current status so we know what status we'll be changing to.
+		$cur_status = $this->check_in_status_for_datetime($DTT_ID, null);
+		$status_to  = $status_paths[$cur_status];
+		// database only records true for checked IN or false for checked OUT
+		// no record ( null ) means checked in NEVER, but we obviously don't save that
+		$new_status = $status_to === EE_Registration::checkin_status_in ? true : false;
+		// add relation - note Check-ins are always creating new rows
+		// because we are keeping track of Check-ins over time.
+		// Eventually we'll probably want to show a list table
+		// for the individual Check-ins so that they can be managed.
+		$checkin = EE_Checkin::new_instance(array(
+			'REG_ID' => $this->ID(),
+			'DTT_ID' => $DTT_ID,
+			'CHK_in' => $new_status,
+		));
+		// if the record could not be saved then return false
+		if ($checkin->save() === 0) {
+			if (WP_DEBUG) {
+				global $wpdb;
+				$error = sprintf(
+					esc_html__(
+						'Registration check in update failed because of the following database error: %1$s%2$s',
+						'event_espresso'
+					),
+					'<br />',
+					$wpdb->last_error
+				);
+			} else {
+				$error = esc_html__(
+					'Registration check in update failed because of an unknown database error',
+					'event_espresso'
+				);
+			}
+			EE_Error::add_error($error, __FILE__, __FUNCTION__, __LINE__);
+			return false;
+		}
+		return $status_to;
+	}
+
+
+	/**
+	 * Returns the latest datetime related to this registration (via the ticket attached to the registration).
+	 * "Latest" is defined by the `DTT_EVT_start` column.
+	 *
+	 * @return EE_Datetime|null
+	 * @throws \EE_Error
+	 */
+	public function get_latest_related_datetime()
+	{
+		return EEM_Datetime::instance()->get_one(
+			array(
+				array(
+					'Ticket.Registration.REG_ID' => $this->ID(),
+				),
+				'order_by' => array('DTT_EVT_start' => 'DESC'),
+			)
+		);
+	}
+
+
+	/**
+	 * Returns the earliest datetime related to this registration (via the ticket attached to the registration).
+	 * "Earliest" is defined by the `DTT_EVT_start` column.
+	 *
+	 * @throws \EE_Error
+	 */
+	public function get_earliest_related_datetime()
+	{
+		return EEM_Datetime::instance()->get_one(
+			array(
+				array(
+					'Ticket.Registration.REG_ID' => $this->ID(),
+				),
+				'order_by' => array('DTT_EVT_start' => 'ASC'),
+			)
+		);
+	}
+
+
+	/**
+	 * This method simply returns the check-in status for this registration and the given datetime.
+	 * If neither the datetime nor the checkin values are provided as arguments,
+	 * then this will return the LATEST check-in status for the registration across all datetimes it belongs to.
+	 *
+	 * @param  int       $DTT_ID  The ID of the datetime we're checking against
+	 *                            (if empty we'll get the primary datetime for
+	 *                            this registration (via event) and use it's ID);
+	 * @param EE_Checkin $checkin If present, we use the given checkin object rather than the dtt_id.
+	 * @return int                Integer representing Check-in status.
+	 * @throws \EE_Error
+	 */
+	public function check_in_status_for_datetime($DTT_ID = 0, $checkin = null)
+	{
+		$checkin_query_params = array(
+			'order_by' => array('CHK_timestamp' => 'DESC'),
+		);
+
+		if ($DTT_ID > 0) {
+			$checkin_query_params[0] = array('DTT_ID' => $DTT_ID);
+		}
+
+		//get checkin object (if exists)
+		$checkin = $checkin instanceof EE_Checkin
+			? $checkin
+			: $this->get_first_related('Checkin', $checkin_query_params);
+		if ($checkin instanceof EE_Checkin) {
+			if ($checkin->get('CHK_in')) {
+				return EE_Registration::checkin_status_in; //checked in
+			}
+			return EE_Registration::checkin_status_out; //had checked in but is now checked out.
+		}
+		return EE_Registration::checkin_status_never; //never been checked in
+	}
+
+
+	/**
+	 * This method returns a localized message for the toggled Check-in message.
+	 *
+	 * @param  int $DTT_ID include specific datetime to get the correct Check-in message.  If not included or null,
+	 *                     then it is assumed Check-in for primary datetime was toggled.
+	 * @param bool $error  This just flags that you want an error message returned. This is put in so that the error
+	 *                     message can be customized with the attendee name.
+	 * @return string internationalized message
+	 * @throws EE_Error
+	 */
+	public function get_checkin_msg($DTT_ID, $error = false)
+	{
+		//let's get the attendee first so we can include the name of the attendee
+		$attendee = $this->get_first_related('Attendee');
+		if ($attendee instanceof EE_Attendee) {
+			if ($error) {
+				return sprintf(__("%s's check-in status was not changed.", "event_espresso"), $attendee->full_name());
+			}
+			$cur_status = $this->check_in_status_for_datetime($DTT_ID);
+			//what is the status message going to be?
+			switch ($cur_status) {
+				case EE_Registration::checkin_status_never:
+					return sprintf(__("%s has been removed from Check-in records", "event_espresso"),
+						$attendee->full_name());
+					break;
+				case EE_Registration::checkin_status_in:
+					return sprintf(__('%s has been checked in', 'event_espresso'), $attendee->full_name());
+					break;
+				case EE_Registration::checkin_status_out:
+					return sprintf(__('%s has been checked out', 'event_espresso'), $attendee->full_name());
+					break;
+			}
+		}
+		return esc_html__("The check-in status could not be determined.", "event_espresso");
+	}
+
+
+	/**
+	 * Returns the related EE_Transaction to this registration
+	 *
+	 * @return EE_Transaction
+	 * @throws EE_Error
+	 * @throws EntityNotFoundException
+	 */
+	public function transaction()
+	{
+		$transaction = $this->get_first_related('Transaction');
+		if (! $transaction instanceof \EE_Transaction) {
+			throw new EntityNotFoundException('Transaction ID', $this->transaction_ID());
+		}
+		return $transaction;
+	}
+
+
+	/**
+	 *        get Registration Code
+	 */
+	public function reg_code()
+	{
+		return $this->get('REG_code');
+	}
+
+
+	/**
+	 *        get Transaction ID
+	 */
+	public function transaction_ID()
+	{
+		return $this->get('TXN_ID');
+	}
+
+
+	/**
+	 * @return int
+	 * @throws EE_Error
+	 */
+	public function ticket_ID()
+	{
+		return $this->get('TKT_ID');
+	}
+
+
+	/**
+	 *        Set Registration Code
+	 *
+	 * @access    public
+	 * @param    string  $REG_code Registration Code
+	 * @param    boolean $use_default
+	 * @throws EE_Error
+	 */
+	public function set_reg_code($REG_code, $use_default = false)
+	{
+		if (empty($REG_code)) {
+			EE_Error::add_error(
+				esc_html__('REG_code can not be empty.', 'event_espresso'),
+				__FILE__,
+				__FUNCTION__,
+				__LINE__
+			);
+			return;
+		}
+		if (! $this->reg_code()) {
+			parent::set('REG_code', $REG_code, $use_default);
+		} else {
+			EE_Error::doing_it_wrong(
+				__CLASS__ . '::' . __FUNCTION__,
+				esc_html__('Can not change a registration REG_code once it has been set.', 'event_espresso'),
+				'4.6.0'
+			);
+		}
+	}
+
+
+	/**
+	 * Returns all other registrations in the same group as this registrant who have the same ticket option.
+	 * Note, if you want to just get all registrations in the same transaction (group), use:
+	 *    $registration->transaction()->registrations();
+	 *
+	 * @since 4.5.0
+	 * @return EE_Registration[] or empty array if this isn't a group registration.
+	 * @throws EE_Error
+	 */
+	public function get_all_other_registrations_in_group()
+	{
+		if ($this->group_size() < 2) {
+			return array();
+		}
+
+		$query[0] = array(
+			'TXN_ID' => $this->transaction_ID(),
+			'REG_ID' => array('!=', $this->ID()),
+			'TKT_ID' => $this->ticket_ID(),
+		);
+		/** @var EE_Registration[] $registrations */
+		$registrations = $this->get_model()->get_all($query);
+		return $registrations;
+	}
+
+	/**
+	 * Return the link to the admin details for the object.
+	 *
+	 * @return string
+	 * @throws EE_Error
+	 */
+	public function get_admin_details_link()
+	{
+		EE_Registry::instance()->load_helper('URL');
+		return EEH_URL::add_query_args_and_nonce(
+			array(
+				'page'    => 'espresso_registrations',
+				'action'  => 'view_registration',
+				'_REG_ID' => $this->ID(),
+			),
+			admin_url('admin.php')
+		);
+	}
+
+	/**
+	 * Returns the link to the editor for the object.  Sometimes this is the same as the details.
+	 *
+	 * @return string
+	 * @throws EE_Error
+	 */
+	public function get_admin_edit_link()
+	{
+		return $this->get_admin_details_link();
+	}
+
+	/**
+	 * Returns the link to a settings page for the object.
+	 *
+	 * @return string
+	 * @throws EE_Error
+	 */
+	public function get_admin_settings_link()
+	{
+		return $this->get_admin_details_link();
+	}
+
+	/**
+	 * Returns the link to the "overview" for the object (typically the "list table" view).
+	 *
+	 * @return string
+	 */
+	public function get_admin_overview_link()
+	{
+		EE_Registry::instance()->load_helper('URL');
+		return EEH_URL::add_query_args_and_nonce(
+			array(
+				'page' => 'espresso_registrations',
+			),
+			admin_url('admin.php')
+		);
+	}
+
+
+	/**
+	 * @param array $query_params
+	 * @return \EE_Registration[]
+	 * @throws \EE_Error
+	 */
+	public function payments($query_params = array())
+	{
+		return $this->get_many_related('Payment', $query_params);
+	}
+
+
+	/**
+	 * @param array $query_params
+	 * @return \EE_Registration_Payment[]
+	 * @throws \EE_Error
+	 */
+	public function registration_payments($query_params = array())
+	{
+		return $this->get_many_related('Registration_Payment', $query_params);
+	}
+
+
+	/**
+	 * This grabs the payment method corresponding to the last payment made for the amount owing on the registration.
+	 * Note: if there are no payments on the registration there will be no payment method returned.
+	 *
+	 * @return EE_Payment_Method|null
+	 */
+	public function payment_method()
+	{
+		return EEM_Payment_Method::instance()->get_last_used_for_registration($this);
+	}
+
+
+	/**
+	 * @return \EE_Line_Item
+	 * @throws EntityNotFoundException
+	 * @throws \EE_Error
+	 */
+	public function ticket_line_item()
+	{
+		$ticket            = $this->ticket();
+		$transaction       = $this->transaction();
+		$line_item         = null;
+		$ticket_line_items = \EEH_Line_Item::get_line_items_by_object_type_and_IDs(
+			$transaction->total_line_item(),
+			'Ticket',
+			array($ticket->ID())
+		);
+		foreach ($ticket_line_items as $ticket_line_item) {
+			if (
+				$ticket_line_item instanceof \EE_Line_Item
+				&& $ticket_line_item->OBJ_type() === 'Ticket'
+				&& $ticket_line_item->OBJ_ID() === $ticket->ID()
+			) {
+				$line_item = $ticket_line_item;
+				break;
+			}
+		}
+		if (! ($line_item instanceof \EE_Line_Item && $line_item->OBJ_type() === 'Ticket')) {
+			throw new EntityNotFoundException('Line Item Ticket ID', $ticket->ID());
+		}
+		return $line_item;
+	}
+
+
+	/**
+	 * Soft Deletes this model object.
+	 *
+	 * @return boolean | int
+	 * @throws \RuntimeException
+	 * @throws \EE_Error
+	 */
+	public function delete()
+	{
+		if ($this->update_extra_meta(EE_Registration::PRE_TRASH_REG_STATUS_KEY, $this->status_ID()) === true) {
+			$this->set_status(EEM_Registration::status_id_cancelled);
+		}
+		return parent::delete();
+	}
+
+
+	/**
+	 * Restores whatever the previous status was on a registration before it was trashed (if possible)
+	 *
+	 * @throws \EE_Error
+	 * @throws \RuntimeException
+	 */
+	public function restore()
+	{
+		$previous_status = $this->get_extra_meta(
+			EE_Registration::PRE_TRASH_REG_STATUS_KEY,
+			true,
+			EEM_Registration::status_id_cancelled
+		);
+		if ($previous_status) {
+			$this->delete_extra_meta(EE_Registration::PRE_TRASH_REG_STATUS_KEY);
+			$this->set_status($previous_status);
+		}
+		return parent::restore();
+	}
+
+
+
+	/*************************** DEPRECATED ***************************/
+
+
+	/**
+	 * @deprecated
+	 * @since     4.7.0
+	 * @access    public
+	 */
+	public function price_paid()
+	{
+		EE_Error::doing_it_wrong('EE_Registration::price_paid()',
+			esc_html__('This method is deprecated, please use EE_Registration::final_price() instead.', 'event_espresso'),
+			'4.7.0');
+		return $this->final_price();
+	}
+
+
+	/**
+	 * @deprecated
+	 * @since     4.7.0
+	 * @access    public
+	 * @param    float $REG_final_price
+	 * @throws EE_Error
+	 * @throws RuntimeException
+	 */
+	public function set_price_paid($REG_final_price = 0.00)
+	{
+		EE_Error::doing_it_wrong('EE_Registration::set_price_paid()',
+			esc_html__('This method is deprecated, please use EE_Registration::set_final_price() instead.', 'event_espresso'),
+			'4.7.0');
+		$this->set_final_price($REG_final_price);
+	}
+
+
+	/**
+	 * @deprecated
+	 * @since 4.7.0
+	 * @return string
+	 * @throws EE_Error
+	 */
+	public function pretty_price_paid()
+	{
+		EE_Error::doing_it_wrong('EE_Registration::pretty_price_paid()',
+			esc_html__('This method is deprecated, please use EE_Registration::pretty_final_price() instead.',
+				'event_espresso'), '4.7.0');
+		return $this->pretty_final_price();
+	}
+
+
+	/**
+	 * Gets the primary datetime related to this registration via the related Event to this registration
+	 *
+	 * @deprecated 4.9.17
+	 * @return EE_Datetime
+	 * @throws EE_Error
+	 * @throws EntityNotFoundException
+	 */
+	public function get_related_primary_datetime()
+	{
+		EE_Error::doing_it_wrong(
+			__METHOD__,
+			esc_html__(
+				'Use EE_Registration::get_latest_related_datetime() or EE_Registration::get_earliest_related_datetime()',
+				'event_espresso'
+			),
+			'4.9.17',
+			'5.0.0'
+		);
+		return $this->event()->primary_datetime();
+	}
 
 
 }

modules/single_page_checkout/EED_Single_Page_Checkout.module.php

Indentation +1856 added lines, -1856 removed lines

@@ -5,7 +5,7 @@ 
 use EventEspresso\core\exceptions\InvalidEntityException;
 
 if ( ! defined('EVENT_ESPRESSO_VERSION')) {
-    exit('No direct script access allowed');
+	exit('No direct script access allowed');
 }
 
 
@@ -20,1861 +20,1861 @@ 
 class EED_Single_Page_Checkout extends EED_Module
 {
 
-    /**
-     * $_initialized - has the SPCO controller already been initialized ?
-     *
-     * @access private
-     * @var bool $_initialized
-     */
-    private static $_initialized = false;
-
-
-    /**
-     * $_checkout_verified - is the EE_Checkout verified as correct for this request ?
-     *
-     * @access private
-     * @var bool $_valid_checkout
-     */
-    private static $_checkout_verified = true;
-
-    /**
-     *    $_reg_steps_array - holds initial array of reg steps
-     *
-     * @access private
-     * @var array $_reg_steps_array
-     */
-    private static $_reg_steps_array = array();
-
-    /**
-     *    $checkout - EE_Checkout object for handling the properties of the current checkout process
-     *
-     * @access public
-     * @var EE_Checkout $checkout
-     */
-    public $checkout;
-
-
-
-    /**
-     * @return EED_Module|EED_Single_Page_Checkout
-     */
-    public static function instance()
-    {
-        add_filter('EED_Single_Page_Checkout__SPCO_active', '__return_true');
-        return parent::get_instance(__CLASS__);
-    }
-
-
-
-    /**
-     * @return EE_CART
-     */
-    public function cart()
-    {
-        return $this->checkout->cart;
-    }
-
-
-
-    /**
-     * @return EE_Transaction
-     */
-    public function transaction()
-    {
-        return $this->checkout->transaction;
-    }
-
-
-
-    /**
-     *    set_hooks - for hooking into EE Core, other modules, etc
-     *
-     * @access    public
-     * @return    void
-     * @throws EE_Error
-     */
-    public static function set_hooks()
-    {
-        EED_Single_Page_Checkout::set_definitions();
-    }
-
-
-
-    /**
-     *    set_hooks_admin - for hooking into EE Admin Core, other modules, etc
-     *
-     * @access    public
-     * @return    void
-     * @throws EE_Error
-     */
-    public static function set_hooks_admin()
-    {
-        EED_Single_Page_Checkout::set_definitions();
-        if ( ! (defined('DOING_AJAX') && DOING_AJAX)) {
-            return;
-        }
-        // going to start an output buffer in case anything gets accidentally output
-        // that might disrupt our JSON response
-        ob_start();
-        EED_Single_Page_Checkout::load_request_handler();
-        EED_Single_Page_Checkout::load_reg_steps();
-        // set ajax hooks
-        add_action('wp_ajax_process_reg_step', array('EED_Single_Page_Checkout', 'process_reg_step'));
-        add_action('wp_ajax_nopriv_process_reg_step', array('EED_Single_Page_Checkout', 'process_reg_step'));
-        add_action('wp_ajax_display_spco_reg_step', array('EED_Single_Page_Checkout', 'display_reg_step'));
-        add_action('wp_ajax_nopriv_display_spco_reg_step', array('EED_Single_Page_Checkout', 'display_reg_step'));
-        add_action('wp_ajax_update_reg_step', array('EED_Single_Page_Checkout', 'update_reg_step'));
-        add_action('wp_ajax_nopriv_update_reg_step', array('EED_Single_Page_Checkout', 'update_reg_step'));
-    }
-
-
-
-    /**
-     *    process ajax request
-     *
-     * @param string $ajax_action
-     * @throws EE_Error
-     */
-    public static function process_ajax_request($ajax_action)
-    {
-        EE_Registry::instance()->REQ->set('action', $ajax_action);
-        EED_Single_Page_Checkout::instance()->_initialize();
-    }
-
-
-
-    /**
-     *    ajax display registration step
-     *
-     * @throws EE_Error
-     */
-    public static function display_reg_step()
-    {
-        EED_Single_Page_Checkout::process_ajax_request('display_spco_reg_step');
-    }
-
-
-
-    /**
-     *    ajax process registration step
-     *
-     * @throws EE_Error
-     */
-    public static function process_reg_step()
-    {
-        EED_Single_Page_Checkout::process_ajax_request('process_reg_step');
-    }
-
-
-
-    /**
-     *    ajax process registration step
-     *
-     * @throws EE_Error
-     */
-    public static function update_reg_step()
-    {
-        EED_Single_Page_Checkout::process_ajax_request('update_reg_step');
-    }
-
-
-
-    /**
-     *   update_checkout
-     *
-     * @access public
-     * @return void
-     * @throws EE_Error
-     */
-    public static function update_checkout()
-    {
-        EED_Single_Page_Checkout::process_ajax_request('update_checkout');
-    }
-
-
-
-    /**
-     *    load_request_handler
-     *
-     * @access    public
-     * @return    void
-     */
-    public static function load_request_handler()
-    {
-        // load core Request_Handler class
-        if (EE_Registry::instance()->REQ !== null) {
-            EE_Registry::instance()->load_core('Request_Handler');
-        }
-    }
-
-
-
-    /**
-     *    set_definitions
-     *
-     * @access    public
-     * @return    void
-     * @throws EE_Error
-     */
-    public static function set_definitions()
-    {
-        if(defined('SPCO_BASE_PATH')) {
-            return;
-        }
-        define(
-            'SPCO_BASE_PATH',
-            rtrim(str_replace(array('\\', '/'), DS, plugin_dir_path(__FILE__)), DS) . DS
-        );
-        define('SPCO_CSS_URL', plugin_dir_url(__FILE__) . 'css' . DS);
-        define('SPCO_IMG_URL', plugin_dir_url(__FILE__) . 'img' . DS);
-        define('SPCO_JS_URL', plugin_dir_url(__FILE__) . 'js' . DS);
-        define('SPCO_INC_PATH', SPCO_BASE_PATH . 'inc' . DS);
-        define('SPCO_REG_STEPS_PATH', SPCO_BASE_PATH . 'reg_steps' . DS);
-        define('SPCO_TEMPLATES_PATH', SPCO_BASE_PATH . 'templates' . DS);
-        EEH_Autoloader::register_autoloaders_for_each_file_in_folder(SPCO_BASE_PATH, true);
-        EE_Registry::$i18n_js_strings['registration_expiration_notice'] = sprintf(
-            __('%1$sWe\'re sorry, but you\'re registration time has expired.%2$s%4$sIf you still wish to complete your registration, please return to the %5$sEvent List%6$sEvent List%7$s and reselect your tickets if available. Please except our apologies for any inconvenience this may have caused.%8$s',
-                'event_espresso'),
-            '<h4 class="important-notice">',
-            '</h4>',
-            '<br />',
-            '<p>',
-            '<a href="' . get_post_type_archive_link('espresso_events') . '" title="',
-            '">',
-            '</a>',
-            '</p>'
-        );
-    }
-
-
-
-    /**
-     * load_reg_steps
-     * loads and instantiates each reg step based on the EE_Registry::instance()->CFG->registration->reg_steps array
-     *
-     * @access    private
-     * @throws EE_Error
-     */
-    public static function load_reg_steps()
-    {
-        static $reg_steps_loaded = false;
-        if ($reg_steps_loaded) {
-            return;
-        }
-        // filter list of reg_steps
-        $reg_steps_to_load = (array)apply_filters(
-            'AHEE__SPCO__load_reg_steps__reg_steps_to_load',
-            EED_Single_Page_Checkout::get_reg_steps()
-        );
-        // sort by key (order)
-        ksort($reg_steps_to_load);
-        // loop through folders
-        foreach ($reg_steps_to_load as $order => $reg_step) {
-            // we need a
-            if (isset($reg_step['file_path'], $reg_step['class_name'], $reg_step['slug'])) {
-                // copy over to the reg_steps_array
-                EED_Single_Page_Checkout::$_reg_steps_array[$order] = $reg_step;
-                // register custom key route for each reg step
-                // ie: step=>"slug" - this is the entire reason we load the reg steps array now
-                EE_Config::register_route(
-                    $reg_step['slug'],
-                    'EED_Single_Page_Checkout',
-                    'run',
-                    'step'
-                );
-                // add AJAX or other hooks
-                if (isset($reg_step['has_hooks']) && $reg_step['has_hooks']) {
-                    // setup autoloaders if necessary
-                    if ( ! class_exists($reg_step['class_name'])) {
-                        EEH_Autoloader::register_autoloaders_for_each_file_in_folder(
-                            $reg_step['file_path'],
-                            true
-                        );
-                    }
-                    if (is_callable($reg_step['class_name'], 'set_hooks')) {
-                        call_user_func(array($reg_step['class_name'], 'set_hooks'));
-                    }
-                }
-            }
-        }
-        $reg_steps_loaded = true;
-    }
-
-
-
-    /**
-     *    get_reg_steps
-     *
-     * @access    public
-     * @return    array
-     */
-    public static function get_reg_steps()
-    {
-        $reg_steps = EE_Registry::instance()->CFG->registration->reg_steps;
-        if (empty($reg_steps)) {
-            $reg_steps = array(
-                10  => array(
-                    'file_path'  => SPCO_REG_STEPS_PATH . 'attendee_information',
-                    'class_name' => 'EE_SPCO_Reg_Step_Attendee_Information',
-                    'slug'       => 'attendee_information',
-                    'has_hooks'  => false,
-                ),
-                20  => array(
-                    'file_path'  => SPCO_REG_STEPS_PATH . 'registration_confirmation',
-                    'class_name' => 'EE_SPCO_Reg_Step_Registration_Confirmation',
-                    'slug'       => 'registration_confirmation',
-                    'has_hooks'  => false,
-                ),
-                30  => array(
-                    'file_path'  => SPCO_REG_STEPS_PATH . 'payment_options',
-                    'class_name' => 'EE_SPCO_Reg_Step_Payment_Options',
-                    'slug'       => 'payment_options',
-                    'has_hooks'  => true,
-                ),
-                999 => array(
-                    'file_path'  => SPCO_REG_STEPS_PATH . 'finalize_registration',
-                    'class_name' => 'EE_SPCO_Reg_Step_Finalize_Registration',
-                    'slug'       => 'finalize_registration',
-                    'has_hooks'  => false,
-                ),
-            );
-        }
-        return $reg_steps;
-    }
-
-
-
-    /**
-     *    registration_checkout_for_admin
-     *
-     * @access    public
-     * @return    string
-     * @throws EE_Error
-     */
-    public static function registration_checkout_for_admin()
-    {
-        EED_Single_Page_Checkout::load_request_handler();
-        EE_Registry::instance()->REQ->set('step', 'attendee_information');
-        EE_Registry::instance()->REQ->set('action', 'display_spco_reg_step');
-        EE_Registry::instance()->REQ->set('process_form_submission', false);
-        EED_Single_Page_Checkout::instance()->_initialize();
-        EED_Single_Page_Checkout::instance()->_display_spco_reg_form();
-        return EE_Registry::instance()->REQ->get_output();
-    }
-
-
-
-    /**
-     * process_registration_from_admin
-     *
-     * @access public
-     * @return \EE_Transaction
-     * @throws EE_Error
-     */
-    public static function process_registration_from_admin()
-    {
-        EED_Single_Page_Checkout::load_request_handler();
-        EE_Registry::instance()->REQ->set('step', 'attendee_information');
-        EE_Registry::instance()->REQ->set('action', 'process_reg_step');
-        EE_Registry::instance()->REQ->set('process_form_submission', true);
-        EED_Single_Page_Checkout::instance()->_initialize();
-        if (EED_Single_Page_Checkout::instance()->checkout->current_step->completed()) {
-            $final_reg_step = end(EED_Single_Page_Checkout::instance()->checkout->reg_steps);
-            if ($final_reg_step instanceof EE_SPCO_Reg_Step_Finalize_Registration) {
-                EED_Single_Page_Checkout::instance()->checkout->set_reg_step_initiated($final_reg_step);
-                if ($final_reg_step->process_reg_step()) {
-                    $final_reg_step->set_completed();
-                    EED_Single_Page_Checkout::instance()->checkout->update_txn_reg_steps_array();
-                    return EED_Single_Page_Checkout::instance()->checkout->transaction;
-                }
-            }
-        }
-        return null;
-    }
-
-
-
-    /**
-     *    run
-     *
-     * @access    public
-     * @param WP_Query $WP_Query
-     * @return    void
-     * @throws EE_Error
-     */
-    public function run($WP_Query)
-    {
-        if (
-            $WP_Query instanceof WP_Query
-            && $WP_Query->is_main_query()
-            && apply_filters('FHEE__EED_Single_Page_Checkout__run', true)
-            && $this->_is_reg_checkout()
-        ) {
-            $this->_initialize();
-        }
-    }
-
-
-
-    /**
-     * determines whether current url matches reg page url
-     *
-     * @return bool
-     */
-    protected function _is_reg_checkout()
-    {
-        // get current permalink for reg page without any extra query args
-        $reg_page_url = \get_permalink(EE_Config::instance()->core->reg_page_id);
-        // get request URI for current request, but without the scheme or host
-        $current_request_uri = \EEH_URL::filter_input_server_url('REQUEST_URI');
-        $current_request_uri = html_entity_decode($current_request_uri);
-        // get array of query args from the current request URI
-        $query_args = \EEH_URL::get_query_string($current_request_uri);
-        // grab page id if it is set
-        $page_id = isset($query_args['page_id']) ? absint($query_args['page_id']) : 0;
-        // and remove the page id from the query args (we will re-add it later)
-        unset($query_args['page_id']);
-        // now strip all query args from current request URI
-        $current_request_uri = remove_query_arg(array_keys($query_args), $current_request_uri);
-        // and re-add the page id if it was set
-        if ($page_id) {
-            $current_request_uri = add_query_arg('page_id', $page_id, $current_request_uri);
-        }
-        // remove slashes and ?
-        $current_request_uri = trim($current_request_uri, '?/');
-        // is current request URI part of the known full reg page URL ?
-        return ! empty($current_request_uri) && strpos($reg_page_url, $current_request_uri) !== false;
-    }
-
-
-
-    /**
-     * @param WP_Query $wp_query
-     * @return    void
-     * @throws EE_Error
-     */
-    public static function init($wp_query)
-    {
-        EED_Single_Page_Checkout::instance()->run($wp_query);
-    }
-
-
-
-    /**
-     *    _initialize - initial module setup
-     *
-     * @access    private
-     * @throws EE_Error
-     * @return    void
-     */
-    private function _initialize()
-    {
-        // ensure SPCO doesn't run twice
-        if (EED_Single_Page_Checkout::$_initialized) {
-            return;
-        }
-        try {
-            EED_Single_Page_Checkout::load_reg_steps();
-            $this->_verify_session();
-            // setup the EE_Checkout object
-            $this->checkout = $this->_initialize_checkout();
-            // filter checkout
-            $this->checkout = apply_filters('FHEE__EED_Single_Page_Checkout___initialize__checkout', $this->checkout);
-            // get the $_GET
-            $this->_get_request_vars();
-            if ($this->_block_bots()) {
-                return;
-            }
-            // filter continue_reg
-            $this->checkout->continue_reg = apply_filters(
-                'FHEE__EED_Single_Page_Checkout__init___continue_reg',
-                true,
-                $this->checkout
-            );
-            // load the reg steps array
-            if ( ! $this->_load_and_instantiate_reg_steps()) {
-                EED_Single_Page_Checkout::$_initialized = true;
-                return;
-            }
-            // set the current step
-            $this->checkout->set_current_step($this->checkout->step);
-            // and the next step
-            $this->checkout->set_next_step();
-            // verify that everything has been setup correctly
-            if ( ! ($this->_verify_transaction_and_get_registrations() && $this->_final_verifications())) {
-                EED_Single_Page_Checkout::$_initialized = true;
-                return;
-            }
-            // lock the transaction
-            $this->checkout->transaction->lock();
-            // make sure all of our cached objects are added to their respective model entity mappers
-            $this->checkout->refresh_all_entities();
-            // set amount owing
-            $this->checkout->amount_owing = $this->checkout->transaction->remaining();
-            // initialize each reg step, which gives them the chance to potentially alter the process
-            $this->_initialize_reg_steps();
-            // DEBUG LOG
-            //$this->checkout->log( __CLASS__, __FUNCTION__, __LINE__ );
-            // get reg form
-            if( ! $this->_check_form_submission()) {
-                EED_Single_Page_Checkout::$_initialized = true;
-                return;
-            }
-            // checkout the action!!!
-            $this->_process_form_action();
-            // add some style and make it dance
-            $this->add_styles_and_scripts();
-            // kk... SPCO has successfully run
-            EED_Single_Page_Checkout::$_initialized = true;
-            // set no cache headers and constants
-            EE_System::do_not_cache();
-            // add anchor
-            add_action('loop_start', array($this, 'set_checkout_anchor'), 1);
-            // remove transaction lock
-            add_action('shutdown', array($this, 'unlock_transaction'), 1);
-        } catch (Exception $e) {
-            EE_Error::add_error($e->getMessage(), __FILE__, __FUNCTION__, __LINE__);
-        }
-    }
-
-
-
-    /**
-     *    _verify_session
-     * checks that the session is valid and not expired
-     *
-     * @access    private
-     * @throws EE_Error
-     */
-    private function _verify_session()
-    {
-        if ( ! EE_Registry::instance()->SSN instanceof EE_Session) {
-            throw new EE_Error(__('The EE_Session class could not be loaded.', 'event_espresso'));
-        }
-        $clear_session_requested = filter_var(
-            EE_Registry::instance()->REQ->get('clear_session', false),
-            FILTER_VALIDATE_BOOLEAN
-        );
-        // is session still valid ?
-        if ($clear_session_requested
-            || ( EE_Registry::instance()->SSN->expired()
-              && EE_Registry::instance()->REQ->get('e_reg_url_link', '') === ''
-            )
-        ) {
-            $this->checkout = new EE_Checkout();
-            EE_Registry::instance()->SSN->clear_session(__CLASS__, __FUNCTION__);
-            // EE_Registry::instance()->SSN->reset_cart();
-            // EE_Registry::instance()->SSN->reset_checkout();
-            // EE_Registry::instance()->SSN->reset_transaction();
-            if (! $clear_session_requested) {
-                EE_Error::add_attention(
-                    EE_Registry::$i18n_js_strings['registration_expiration_notice'],
-                    __FILE__, __FUNCTION__, __LINE__
-                );
-            }
-            // EE_Registry::instance()->SSN->reset_expired();
-        }
-    }
-
-
-
-    /**
-     *    _initialize_checkout
-     * loads and instantiates EE_Checkout
-     *
-     * @access    private
-     * @throws EE_Error
-     * @return EE_Checkout
-     */
-    private function _initialize_checkout()
-    {
-        // look in session for existing checkout
-        /** @type EE_Checkout $checkout */
-        $checkout = EE_Registry::instance()->SSN->checkout();
-        // verify
-        if ( ! $checkout instanceof EE_Checkout) {
-            // instantiate EE_Checkout object for handling the properties of the current checkout process
-            $checkout = EE_Registry::instance()->load_file(
-                SPCO_INC_PATH,
-                'EE_Checkout',
-                'class', array(),
-                false
-            );
-        } else {
-            if ($checkout->current_step->is_final_step() && $checkout->exit_spco() === true) {
-                $this->unlock_transaction();
-                wp_safe_redirect($checkout->redirect_url);
-                exit();
-            }
-        }
-        $checkout = apply_filters('FHEE__EED_Single_Page_Checkout___initialize_checkout__checkout', $checkout);
-        // verify again
-        if ( ! $checkout instanceof EE_Checkout) {
-            throw new EE_Error(__('The EE_Checkout class could not be loaded.', 'event_espresso'));
-        }
-        // reset anything that needs a clean slate for each request
-        $checkout->reset_for_current_request();
-        return $checkout;
-    }
-
-
-
-    /**
-     *    _get_request_vars
-     *
-     * @access    private
-     * @return    void
-     * @throws EE_Error
-     */
-    private function _get_request_vars()
-    {
-        // load classes
-        EED_Single_Page_Checkout::load_request_handler();
-        //make sure this request is marked as belonging to EE
-        EE_Registry::instance()->REQ->set_espresso_page(true);
-        // which step is being requested ?
-        $this->checkout->step = EE_Registry::instance()->REQ->get('step', $this->_get_first_step());
-        // which step is being edited ?
-        $this->checkout->edit_step = EE_Registry::instance()->REQ->get('edit_step', '');
-        // and what we're doing on the current step
-        $this->checkout->action = EE_Registry::instance()->REQ->get('action', 'display_spco_reg_step');
-        // timestamp
-        $this->checkout->uts = EE_Registry::instance()->REQ->get('uts', 0);
-        // returning to edit ?
-        $this->checkout->reg_url_link = EE_Registry::instance()->REQ->get('e_reg_url_link', '');
-        // or some other kind of revisit ?
-        $this->checkout->revisit = filter_var(
-            EE_Registry::instance()->REQ->get('revisit', false),
-            FILTER_VALIDATE_BOOLEAN
-        );
-        // and whether or not to generate a reg form for this request
-        $this->checkout->generate_reg_form = filter_var(
-            EE_Registry::instance()->REQ->get('generate_reg_form', true),
-            FILTER_VALIDATE_BOOLEAN
-        );
-        // and whether or not to process a reg form submission for this request
-        $this->checkout->process_form_submission = filter_var(
-            EE_Registry::instance()->REQ->get(
-                'process_form_submission',
-                $this->checkout->action === 'process_reg_step'
-            ),
-            FILTER_VALIDATE_BOOLEAN
-        );
-        $this->checkout->process_form_submission = filter_var(
-            $this->checkout->action !== 'display_spco_reg_step'
-                ? $this->checkout->process_form_submission
-                : false,
-            FILTER_VALIDATE_BOOLEAN
-        );
-        // $this->_display_request_vars();
-    }
-
-
-
-    /**
-     *  _display_request_vars
-     *
-     * @access    protected
-     * @return    void
-     */
-    protected function _display_request_vars()
-    {
-        if ( ! WP_DEBUG) {
-            return;
-        }
-        EEH_Debug_Tools::printr($_REQUEST, '$_REQUEST', __FILE__, __LINE__);
-        EEH_Debug_Tools::printr($this->checkout->step, '$this->checkout->step', __FILE__, __LINE__);
-        EEH_Debug_Tools::printr($this->checkout->edit_step, '$this->checkout->edit_step', __FILE__, __LINE__);
-        EEH_Debug_Tools::printr($this->checkout->action, '$this->checkout->action', __FILE__, __LINE__);
-        EEH_Debug_Tools::printr($this->checkout->reg_url_link, '$this->checkout->reg_url_link', __FILE__, __LINE__);
-        EEH_Debug_Tools::printr($this->checkout->revisit, '$this->checkout->revisit', __FILE__, __LINE__);
-        EEH_Debug_Tools::printr($this->checkout->generate_reg_form, '$this->checkout->generate_reg_form', __FILE__, __LINE__);
-        EEH_Debug_Tools::printr($this->checkout->process_form_submission, '$this->checkout->process_form_submission', __FILE__, __LINE__);
-    }
-
-
-
-    /**
-     * _block_bots
-     * checks that the incoming request has either of the following set:
-     *  a uts (unix timestamp) which indicates that the request was redirected from the Ticket Selector
-     *  a REG URL Link, which indicates that the request is a return visit to SPCO for a valid TXN
-     * so if you're not coming from the Ticket Selector nor returning for a valid IP...
-     * then where you coming from man?
-     *
-     * @return boolean
-     */
-    private function _block_bots()
-    {
-        $invalid_checkout_access = EED_Invalid_Checkout_Access::getInvalidCheckoutAccess();
-        if ($invalid_checkout_access->checkoutAccessIsInvalid($this->checkout)) {
-            return true;
-        }
-        return false;
-    }
-
-
-
-    /**
-     *    _get_first_step
-     *  gets slug for first step in $_reg_steps_array
-     *
-     * @access    private
-     * @throws EE_Error
-     * @return    string
-     */
-    private function _get_first_step()
-    {
-        $first_step = reset(EED_Single_Page_Checkout::$_reg_steps_array);
-        return isset($first_step['slug']) ? $first_step['slug'] : 'attendee_information';
-    }
-
-
-
-    /**
-     *    _load_and_instantiate_reg_steps
-     *  instantiates each reg step based on the loaded reg_steps array
-     *
-     * @access    private
-     * @throws EE_Error
-     * @return    bool
-     */
-    private function _load_and_instantiate_reg_steps()
-    {
-        do_action('AHEE__Single_Page_Checkout___load_and_instantiate_reg_steps__start', $this->checkout);
-        // have reg_steps already been instantiated ?
-        if (
-            empty($this->checkout->reg_steps)
-            || apply_filters('FHEE__Single_Page_Checkout__load_reg_steps__reload_reg_steps', false, $this->checkout)
-        ) {
-            // if not, then loop through raw reg steps array
-            foreach (EED_Single_Page_Checkout::$_reg_steps_array as $order => $reg_step) {
-                if ( ! $this->_load_and_instantiate_reg_step($reg_step, $order)) {
-                    return false;
-                }
-            }
-            EE_Registry::instance()->CFG->registration->skip_reg_confirmation = true;
-            EE_Registry::instance()->CFG->registration->reg_confirmation_last = true;
-            // skip the registration_confirmation page ?
-            if (EE_Registry::instance()->CFG->registration->skip_reg_confirmation) {
-                // just remove it from the reg steps array
-                $this->checkout->remove_reg_step('registration_confirmation', false);
-            } else if (
-                isset($this->checkout->reg_steps['registration_confirmation'])
-                && EE_Registry::instance()->CFG->registration->reg_confirmation_last
-            ) {
-                // set the order to something big like 100
-                $this->checkout->set_reg_step_order('registration_confirmation', 100);
-            }
-            // filter the array for good luck
-            $this->checkout->reg_steps = apply_filters(
-                'FHEE__Single_Page_Checkout__load_reg_steps__reg_steps',
-                $this->checkout->reg_steps
-            );
-            // finally re-sort based on the reg step class order properties
-            $this->checkout->sort_reg_steps();
-        } else {
-            foreach ($this->checkout->reg_steps as $reg_step) {
-                // set all current step stati to FALSE
-                $reg_step->set_is_current_step(false);
-            }
-        }
-        if (empty($this->checkout->reg_steps)) {
-            EE_Error::add_error(
-                __('No Reg Steps were loaded..', 'event_espresso'),
-                __FILE__, __FUNCTION__, __LINE__
-            );
-            return false;
-        }
-        // make reg step details available to JS
-        $this->checkout->set_reg_step_JSON_info();
-        return true;
-    }
-
-
-
-    /**
-     *     _load_and_instantiate_reg_step
-     *
-     * @access    private
-     * @param array $reg_step
-     * @param int   $order
-     * @return bool
-     */
-    private function _load_and_instantiate_reg_step($reg_step = array(), $order = 0)
-    {
-        // we need a file_path, class_name, and slug to add a reg step
-        if (isset($reg_step['file_path'], $reg_step['class_name'], $reg_step['slug'])) {
-            // if editing a specific step, but this is NOT that step... (and it's not the 'finalize_registration' step)
-            if (
-                $this->checkout->reg_url_link
-                && $this->checkout->step !== $reg_step['slug']
-                && $reg_step['slug'] !== 'finalize_registration'
-                // normally at this point we would NOT load the reg step, but this filter can change that
-                && apply_filters(
-                    'FHEE__Single_Page_Checkout___load_and_instantiate_reg_step__bypass_reg_step',
-                    true,
-                    $reg_step,
-                    $this->checkout
-                )
-            ) {
-                return true;
-            }
-            // instantiate step class using file path and class name
-            $reg_step_obj = EE_Registry::instance()->load_file(
-                $reg_step['file_path'],
-                $reg_step['class_name'],
-                'class',
-                $this->checkout,
-                false
-            );
-            // did we gets the goods ?
-            if ($reg_step_obj instanceof EE_SPCO_Reg_Step) {
-                // set reg step order based on config
-                $reg_step_obj->set_order($order);
-                // add instantiated reg step object to the master reg steps array
-                $this->checkout->add_reg_step($reg_step_obj);
-            } else {
-                EE_Error::add_error(
-                    __('The current step could not be set.', 'event_espresso'),
-                    __FILE__, __FUNCTION__, __LINE__
-                );
-                return false;
-            }
-        } else {
-            if (WP_DEBUG) {
-                EE_Error::add_error(
-                    sprintf(
-                        __(
-                            'A registration step could not be loaded. One or more of the following data points is invalid:%4$s%5$sFile Path: %1$s%6$s%5$sClass Name: %2$s%6$s%5$sSlug: %3$s%6$s%7$s',
-                            'event_espresso'
-                        ),
-                        isset($reg_step['file_path']) ? $reg_step['file_path'] : '',
-                        isset($reg_step['class_name']) ? $reg_step['class_name'] : '',
-                        isset($reg_step['slug']) ? $reg_step['slug'] : '',
-                        '<ul>',
-                        '<li>',
-                        '</li>',
-                        '</ul>'
-                    ),
-                    __FILE__, __FUNCTION__, __LINE__
-                );
-            }
-            return false;
-        }
-        return true;
-    }
-
-
-    /**
-     * _verify_transaction_and_get_registrations
-     *
-     * @access private
-     * @return bool
-     * @throws InvalidDataTypeException
-     * @throws InvalidEntityException
-     * @throws EE_Error
-     */
-    private function _verify_transaction_and_get_registrations()
-    {
-        // was there already a valid transaction in the checkout from the session ?
-        if ( ! $this->checkout->transaction instanceof EE_Transaction) {
-            // get transaction from db or session
-            $this->checkout->transaction = $this->checkout->reg_url_link && ! is_admin()
-                ? $this->_get_transaction_and_cart_for_previous_visit()
-                : $this->_get_cart_for_current_session_and_setup_new_transaction();
-            if ( ! $this->checkout->transaction instanceof EE_Transaction) {
-                EE_Error::add_error(
-                    __('Your Registration and Transaction information could not be retrieved from the db.',
-                        'event_espresso'),
-                    __FILE__, __FUNCTION__, __LINE__
-                );
-                $this->checkout->transaction = EE_Transaction::new_instance();
-                // add some style and make it dance
-                $this->add_styles_and_scripts();
-                EED_Single_Page_Checkout::$_initialized = true;
-                return false;
-            }
-            // and the registrations for the transaction
-            $this->_get_registrations($this->checkout->transaction);
-        }
-        return true;
-    }
-
-
-
-    /**
-     * _get_transaction_and_cart_for_previous_visit
-     *
-     * @access private
-     * @return mixed EE_Transaction|NULL
-     */
-    private function _get_transaction_and_cart_for_previous_visit()
-    {
-        /** @var $TXN_model EEM_Transaction */
-        $TXN_model = EE_Registry::instance()->load_model('Transaction');
-        // because the reg_url_link is present in the request,
-        // this is a return visit to SPCO, so we'll get the transaction data from the db
-        $transaction = $TXN_model->get_transaction_from_reg_url_link($this->checkout->reg_url_link);
-        // verify transaction
-        if ($transaction instanceof EE_Transaction) {
-            // and get the cart that was used for that transaction
-            $this->checkout->cart = $this->_get_cart_for_transaction($transaction);
-            return $transaction;
-        }
-        EE_Error::add_error(
-            __('Your Registration and Transaction information could not be retrieved from the db.', 'event_espresso'),
-            __FILE__, __FUNCTION__, __LINE__
-        );
-        return null;
-
-    }
-
-
-
-    /**
-     * _get_cart_for_transaction
-     *
-     * @access private
-     * @param EE_Transaction $transaction
-     * @return EE_Cart
-     */
-    private function _get_cart_for_transaction($transaction)
-    {
-        return $this->checkout->get_cart_for_transaction($transaction);
-    }
-
-
-
-    /**
-     * get_cart_for_transaction
-     *
-     * @access public
-     * @param EE_Transaction $transaction
-     * @return EE_Cart
-     */
-    public function get_cart_for_transaction(EE_Transaction $transaction)
-    {
-        return $this->checkout->get_cart_for_transaction($transaction);
-    }
-
-
-
-    /**
-     * _get_transaction_and_cart_for_current_session
-     *    generates a new EE_Transaction object and adds it to the $_transaction property.
-     *
-     * @access private
-     * @return EE_Transaction
-     * @throws EE_Error
-     */
-    private function _get_cart_for_current_session_and_setup_new_transaction()
-    {
-        //  if there's no transaction, then this is the FIRST visit to SPCO
-        // so load up the cart ( passing nothing for the TXN because it doesn't exist yet )
-        $this->checkout->cart = $this->_get_cart_for_transaction(null);
-        // and then create a new transaction
-        $transaction = $this->_initialize_transaction();
-        // verify transaction
-        if ($transaction instanceof EE_Transaction) {
-            // save it so that we have an ID for other objects to use
-            $transaction->save();
-            // and save TXN data to the cart
-            $this->checkout->cart->get_grand_total()->save_this_and_descendants_to_txn($transaction->ID());
-        } else {
-            EE_Error::add_error(
-                __('A Valid Transaction could not be initialized.', 'event_espresso'),
-                __FILE__, __FUNCTION__, __LINE__
-            );
-        }
-        return $transaction;
-    }
-
-
-
-    /**
-     *    generates a new EE_Transaction object and adds it to the $_transaction property.
-     *
-     * @access private
-     * @return mixed EE_Transaction|NULL
-     */
-    private function _initialize_transaction()
-    {
-        try {
-            // ensure cart totals have been calculated
-            $this->checkout->cart->get_grand_total()->recalculate_total_including_taxes();
-            // grab the cart grand total
-            $cart_total = $this->checkout->cart->get_cart_grand_total();
-            // create new TXN
-            $transaction = EE_Transaction::new_instance(
-                array(
-                    'TXN_reg_steps' => $this->checkout->initialize_txn_reg_steps_array(),
-                    'TXN_total'     => $cart_total > 0 ? $cart_total : 0,
-                    'TXN_paid'      => 0,
-                    'STS_ID'        => EEM_Transaction::failed_status_code,
-                )
-            );
-            // save it so that we have an ID for other objects to use
-            $transaction->save();
-            // set cron job for following up on TXNs after their session has expired
-            EE_Cron_Tasks::schedule_expired_transaction_check(
-                EE_Registry::instance()->SSN->expiration() + 1,
-                $transaction->ID()
-            );
-            return $transaction;
-        } catch (Exception $e) {
-            EE_Error::add_error($e->getMessage(), __FILE__, __FUNCTION__, __LINE__);
-        }
-        return null;
-    }
-
-
-    /**
-     * _get_registrations
-     *
-     * @access private
-     * @param EE_Transaction $transaction
-     * @return void
-     * @throws InvalidDataTypeException
-     * @throws InvalidEntityException
-     * @throws EE_Error
-     */
-    private function _get_registrations(EE_Transaction $transaction)
-    {
-        // first step: grab the registrants  { : o
-        $registrations = $transaction->registrations($this->checkout->reg_cache_where_params, true);
-        // verify registrations have been set
-        if (empty($registrations)) {
-            // if no cached registrations, then check the db
-            $registrations = $transaction->registrations($this->checkout->reg_cache_where_params, false);
-            // still nothing ? well as long as this isn't a revisit
-            if (empty($registrations) && ! $this->checkout->revisit) {
-                // generate new registrations from scratch
-                $registrations = $this->_initialize_registrations($transaction);
-            }
-        }
-        // sort by their original registration order
-        usort($registrations, array('EED_Single_Page_Checkout', 'sort_registrations_by_REG_count'));
-        // then loop thru the array
-        foreach ($registrations as $registration) {
-            // verify each registration
-            if ($registration instanceof EE_Registration) {
-                // we display all attendee info for the primary registrant
-                if ($this->checkout->reg_url_link === $registration->reg_url_link()
-                    && $registration->is_primary_registrant()
-                ) {
-                    $this->checkout->primary_revisit = true;
-                    break;
-                }
-                if ($this->checkout->revisit
-                           && $this->checkout->reg_url_link !== $registration->reg_url_link()
-                ) {
-                    // but hide info if it doesn't belong to you
-                    $transaction->clear_cache('Registration', $registration->ID());
-                }
-                $this->checkout->set_reg_status_updated($registration->ID(), false);
-            }
-        }
-    }
-
-
-    /**
-     *    adds related EE_Registration objects for each ticket in the cart to the current EE_Transaction object
-     *
-     * @access private
-     * @param EE_Transaction $transaction
-     * @return    array
-     * @throws InvalidDataTypeException
-     * @throws InvalidEntityException
-     * @throws EE_Error
-     */
-    private function _initialize_registrations(EE_Transaction $transaction)
-    {
-        $att_nmbr = 0;
-        $registrations = array();
-        if ($transaction instanceof EE_Transaction) {
-            /** @type EE_Registration_Processor $registration_processor */
-            $registration_processor = EE_Registry::instance()->load_class('Registration_Processor');
-            $this->checkout->total_ticket_count = $this->checkout->cart->all_ticket_quantity_count();
-            // now let's add the cart items to the $transaction
-            foreach ($this->checkout->cart->get_tickets() as $line_item) {
-                //do the following for each ticket of this type they selected
-                for ($x = 1; $x <= $line_item->quantity(); $x++) {
-                    $att_nmbr++;
-                    /** @var EventEspresso\core\services\commands\registration\CreateRegistrationCommand $CreateRegistrationCommand */
-                    $CreateRegistrationCommand = EE_Registry::instance()->create(
-                        'EventEspresso\core\services\commands\registration\CreateRegistrationCommand',
-                        array(
-                            $transaction,
-                            $line_item,
-                            $att_nmbr,
-                            $this->checkout->total_ticket_count,
-                        )
-                    );
-                    // override capabilities for frontend registrations
-                    if ( ! is_admin()) {
-                        $CreateRegistrationCommand->setCapCheck(
-                            new PublicCapabilities('', 'create_new_registration')
-                        );
-                    }
-                    $registration = EE_Registry::instance()->BUS->execute($CreateRegistrationCommand);
-                    if ( ! $registration instanceof EE_Registration) {
-                        throw new InvalidEntityException($registration, 'EE_Registration');
-                    }
-                    $registrations[ $registration->ID() ] = $registration;
-                }
-            }
-            $registration_processor->fix_reg_final_price_rounding_issue($transaction);
-        }
-        return $registrations;
-    }
-
-
-
-    /**
-     * sorts registrations by REG_count
-     *
-     * @access public
-     * @param EE_Registration $reg_A
-     * @param EE_Registration $reg_B
-     * @return int
-     */
-    public static function sort_registrations_by_REG_count(EE_Registration $reg_A, EE_Registration $reg_B)
-    {
-        // this shouldn't ever happen within the same TXN, but oh well
-        if ($reg_A->count() === $reg_B->count()) {
-            return 0;
-        }
-        return ($reg_A->count() > $reg_B->count()) ? 1 : -1;
-    }
-
-
-
-    /**
-     *    _final_verifications
-     * just makes sure that everything is set up correctly before proceeding
-     *
-     * @access    private
-     * @return    bool
-     * @throws EE_Error
-     */
-    private function _final_verifications()
-    {
-        // filter checkout
-        $this->checkout = apply_filters(
-            'FHEE__EED_Single_Page_Checkout___final_verifications__checkout',
-            $this->checkout
-        );
-        //verify that current step is still set correctly
-        if ( ! $this->checkout->current_step instanceof EE_SPCO_Reg_Step) {
-            EE_Error::add_error(
-                __('We\'re sorry but the registration process can not proceed because one or more registration steps were not setup correctly. Please refresh the page and try again or contact support.', 'event_espresso'),
-                __FILE__,
-                __FUNCTION__,
-                __LINE__
-            );
-            return false;
-        }
-        // if returning to SPCO, then verify that primary registrant is set
-        if ( ! empty($this->checkout->reg_url_link)) {
-            $valid_registrant = $this->checkout->transaction->primary_registration();
-            if ( ! $valid_registrant instanceof EE_Registration) {
-                EE_Error::add_error(
-                    __('We\'re sorry but there appears to be an error with the "reg_url_link" or the primary registrant for this transaction. Please refresh the page and try again or contact support.', 'event_espresso'),
-                    __FILE__,
-                    __FUNCTION__,
-                    __LINE__
-                );
-                return false;
-            }
-            $valid_registrant = null;
-            foreach (
-                $this->checkout->transaction->registrations($this->checkout->reg_cache_where_params) as $registration
-            ) {
-                if (
-                    $registration instanceof EE_Registration
-                    && $registration->reg_url_link() === $this->checkout->reg_url_link
-                ) {
-                    $valid_registrant = $registration;
-                }
-            }
-            if ( ! $valid_registrant instanceof EE_Registration) {
-                // hmmm... maybe we have the wrong session because the user is opening multiple tabs ?
-                if (EED_Single_Page_Checkout::$_checkout_verified) {
-                    // clear the session, mark the checkout as unverified, and try again
-                    EE_Registry::instance()->SSN->clear_session(__CLASS__, __FUNCTION__);
-                    EED_Single_Page_Checkout::$_initialized = false;
-                    EED_Single_Page_Checkout::$_checkout_verified = false;
-                    $this->_initialize();
-                    EE_Error::reset_notices();
-                    return false;
-                }
-                EE_Error::add_error(
-                    __(
-                        'We\'re sorry but there appears to be an error with the "reg_url_link" or the transaction itself. Please refresh the page and try again or contact support.',
-                        'event_espresso'
-                    ),
-                    __FILE__,
-                    __FUNCTION__,
-                    __LINE__
-                );
-                return false;
-            }
-        }
-        // now that things have been kinda sufficiently verified,
-        // let's add the checkout to the session so that it's available to other systems
-        EE_Registry::instance()->SSN->set_checkout($this->checkout);
-        return true;
-    }
-
-
-
-    /**
-     *    _initialize_reg_steps
-     * first makes sure that EE_Transaction_Processor::set_reg_step_initiated() is called as required
-     * then loops thru all of the active reg steps and calls the initialize_reg_step() method
-     *
-     * @access    private
-     * @param bool $reinitializing
-     * @throws EE_Error
-     */
-    private function _initialize_reg_steps($reinitializing = false)
-    {
-        $this->checkout->set_reg_step_initiated($this->checkout->current_step);
-        // loop thru all steps to call their individual "initialize" methods and set i18n strings for JS
-        foreach ($this->checkout->reg_steps as $reg_step) {
-            if ( ! $reg_step->initialize_reg_step()) {
-                // if not initialized then maybe this step is being removed...
-                if ( ! $reinitializing && $reg_step->is_current_step()) {
-                    // if it was the current step, then we need to start over here
-                    $this->_initialize_reg_steps(true);
-                    return;
-                }
-                continue;
-            }
-            // add css and JS for current step
-            $reg_step->enqueue_styles_and_scripts();
-            // i18n
-            $reg_step->translate_js_strings();
-            if ($reg_step->is_current_step()) {
-                // the text that appears on the reg step form submit button
-                $reg_step->set_submit_button_text();
-            }
-        }
-        // dynamically creates hook point like: AHEE__Single_Page_Checkout___initialize_reg_step__attendee_information
-        do_action(
-            "AHEE__Single_Page_Checkout___initialize_reg_step__{$this->checkout->current_step->slug()}",
-            $this->checkout->current_step
-        );
-    }
-
-
-
-    /**
-     * _check_form_submission
-     *
-     * @access private
-     * @return boolean
-     */
-    private function _check_form_submission()
-    {
-        //does this request require the reg form to be generated ?
-        if ($this->checkout->generate_reg_form) {
-            // ever heard that song by Blue Rodeo ?
-            try {
-                $this->checkout->current_step->reg_form = $this->checkout->current_step->generate_reg_form();
-                // if not displaying a form, then check for form submission
-                if (
-                    $this->checkout->process_form_submission
-                    && $this->checkout->current_step->reg_form->was_submitted()
-                ) {
-                    // clear out any old data in case this step is being run again
-                    $this->checkout->current_step->set_valid_data(array());
-                    // capture submitted form data
-                    $this->checkout->current_step->reg_form->receive_form_submission(
-                        apply_filters(
-                            'FHEE__Single_Page_Checkout___check_form_submission__request_params',
-                            EE_Registry::instance()->REQ->params(),
-                            $this->checkout
-                        )
-                    );
-                    // validate submitted form data
-                    if ( ! $this->checkout->continue_reg || ! $this->checkout->current_step->reg_form->is_valid()) {
-                        // thou shall not pass !!!
-                        $this->checkout->continue_reg = false;
-                        // any form validation errors?
-                        if ($this->checkout->current_step->reg_form->submission_error_message() !== '') {
-                            $submission_error_messages = array();
-                            // bad, bad, bad registrant
-                            foreach (
-                                $this->checkout->current_step->reg_form->get_validation_errors_accumulated()
-                                as $validation_error
-                            ) {
-                                if ($validation_error instanceof EE_Validation_Error) {
-                                    $submission_error_messages[] = sprintf(
-                                        __('%s : %s', 'event_espresso'),
-                                        $validation_error->get_form_section()->html_label_text(),
-                                        $validation_error->getMessage()
-                                    );
-                                }
-                            }
-                            EE_Error::add_error(
-                                implode('<br />', $submission_error_messages),
-                                __FILE__, __FUNCTION__, __LINE__
-                            );
-                        }
-                        // well not really... what will happen is
-                        // we'll just get redirected back to redo the current step
-                        $this->go_to_next_step();
-                        return false;
-                    }
-                }
-            } catch (EE_Error $e) {
-                $e->get_error();
-            }
-        }
-        return true;
-    }
-
-
-
-    /**
-     * _process_action
-     *
-     * @access private
-     * @return void
-     * @throws EE_Error
-     */
-    private function _process_form_action()
-    {
-        // what cha wanna do?
-        switch ($this->checkout->action) {
-            // AJAX next step reg form
-            case 'display_spco_reg_step' :
-                $this->checkout->redirect = false;
-                if (EE_Registry::instance()->REQ->ajax) {
-                    $this->checkout->json_response->set_reg_step_html(
-                        $this->checkout->current_step->display_reg_form()
-                    );
-                }
-                break;
-            default :
-                // meh... do one of those other steps first
-                if (
-                    ! empty($this->checkout->action)
-                    && is_callable(array($this->checkout->current_step, $this->checkout->action))
-                ) {
-                    // dynamically creates hook point like:
-                    //   AHEE__Single_Page_Checkout__before_attendee_information__process_reg_step
-                    do_action(
-                        "AHEE__Single_Page_Checkout__before_{$this->checkout->current_step->slug()}__{$this->checkout->action}",
-                        $this->checkout->current_step
-                    );
-                    // call action on current step
-                    if (call_user_func(array($this->checkout->current_step, $this->checkout->action))) {
-                        // good registrant, you get to proceed
-                        if (
-                            $this->checkout->current_step->success_message() !== ''
-                            && apply_filters(
-                                'FHEE__Single_Page_Checkout___process_form_action__display_success',
-                                false
-                            )
-                        ) {
-                            EE_Error::add_success(
-                                $this->checkout->current_step->success_message()
-                                . '<br />' . $this->checkout->next_step->_instructions()
-                            );
-                        }
-                        // pack it up, pack it in...
-                        $this->_setup_redirect();
-                    }
-                    // dynamically creates hook point like:
-                    //  AHEE__Single_Page_Checkout__after_payment_options__process_reg_step
-                    do_action(
-                        "AHEE__Single_Page_Checkout__after_{$this->checkout->current_step->slug()}__{$this->checkout->action}",
-                        $this->checkout->current_step
-                    );
-                } else {
-                    EE_Error::add_error(
-                        sprintf(
-                            __(
-                                'The requested form action "%s" does not exist for the current "%s" registration step.',
-                                'event_espresso'
-                            ),
-                            $this->checkout->action,
-                            $this->checkout->current_step->name()
-                        ),
-                        __FILE__,
-                        __FUNCTION__,
-                        __LINE__
-                    );
-                }
-            // end default
-        }
-        // store our progress so far
-        $this->checkout->stash_transaction_and_checkout();
-        // advance to the next step! If you pass GO, collect $200
-        $this->go_to_next_step();
-    }
-
-
-
-    /**
-     *        add_styles_and_scripts
-     *
-     * @access        public
-     * @return        void
-     */
-    public function add_styles_and_scripts()
-    {
-        // i18n
-        $this->translate_js_strings();
-        if ($this->checkout->admin_request) {
-            add_action('admin_enqueue_scripts', array($this, 'enqueue_styles_and_scripts'), 10);
-        } else {
-            add_action('wp_enqueue_scripts', array($this, 'enqueue_styles_and_scripts'), 10);
-        }
-    }
-
-
-
-    /**
-     *        translate_js_strings
-     *
-     * @access        public
-     * @return        void
-     */
-    public function translate_js_strings()
-    {
-        EE_Registry::$i18n_js_strings['revisit'] = $this->checkout->revisit;
-        EE_Registry::$i18n_js_strings['e_reg_url_link'] = $this->checkout->reg_url_link;
-        EE_Registry::$i18n_js_strings['server_error'] = __(
-            'An unknown error occurred on the server while attempting to process your request. Please refresh the page and try again or contact support.',
-            'event_espresso'
-        );
-        EE_Registry::$i18n_js_strings['invalid_json_response'] = __(
-            'An invalid response was returned from the server while attempting to process your request. Please refresh the page and try again or contact support.',
-            'event_espresso'
-        );
-        EE_Registry::$i18n_js_strings['validation_error'] = __(
-            'There appears to be a problem with the form validation configuration! Please check the admin settings or contact support.',
-            'event_espresso'
-        );
-        EE_Registry::$i18n_js_strings['invalid_payment_method'] = __(
-            'There appears to be a problem with the payment method configuration! Please refresh the page and try again or contact support.',
-            'event_espresso'
-        );
-        EE_Registry::$i18n_js_strings['reg_step_error'] = __(
-            'This registration step could not be completed. Please refresh the page and try again.',
-            'event_espresso'
-        );
-        EE_Registry::$i18n_js_strings['invalid_coupon'] = __(
-            'We\'re sorry but that coupon code does not appear to be valid. If this is incorrect, please contact the site administrator.',
-            'event_espresso'
-        );
-        EE_Registry::$i18n_js_strings['process_registration'] = sprintf(
-            __(
-                'Please wait while we process your registration.%sDo not refresh the page or navigate away while this is happening.%sThank you for your patience.',
-                'event_espresso'
-            ),
-            '<br/>',
-            '<br/>'
-        );
-        EE_Registry::$i18n_js_strings['language'] = get_bloginfo('language');
-        EE_Registry::$i18n_js_strings['EESID'] = EE_Registry::instance()->SSN->id();
-        EE_Registry::$i18n_js_strings['currency'] = EE_Registry::instance()->CFG->currency;
-        EE_Registry::$i18n_js_strings['datepicker_yearRange'] = '-150:+20';
-        EE_Registry::$i18n_js_strings['timer_years'] = __('years', 'event_espresso');
-        EE_Registry::$i18n_js_strings['timer_months'] = __('months', 'event_espresso');
-        EE_Registry::$i18n_js_strings['timer_weeks'] = __('weeks', 'event_espresso');
-        EE_Registry::$i18n_js_strings['timer_days'] = __('days', 'event_espresso');
-        EE_Registry::$i18n_js_strings['timer_hours'] = __('hours', 'event_espresso');
-        EE_Registry::$i18n_js_strings['timer_minutes'] = __('minutes', 'event_espresso');
-        EE_Registry::$i18n_js_strings['timer_seconds'] = __('seconds', 'event_espresso');
-        EE_Registry::$i18n_js_strings['timer_year'] = __('year', 'event_espresso');
-        EE_Registry::$i18n_js_strings['timer_month'] = __('month', 'event_espresso');
-        EE_Registry::$i18n_js_strings['timer_week'] = __('week', 'event_espresso');
-        EE_Registry::$i18n_js_strings['timer_day'] = __('day', 'event_espresso');
-        EE_Registry::$i18n_js_strings['timer_hour'] = __('hour', 'event_espresso');
-        EE_Registry::$i18n_js_strings['timer_minute'] = __('minute', 'event_espresso');
-        EE_Registry::$i18n_js_strings['timer_second'] = __('second', 'event_espresso');
-        EE_Registry::$i18n_js_strings['registration_expiration_notice'] = sprintf(
-            __(
-                '%1$sWe\'re sorry, but your registration time has expired.%2$s%3$s%4$sIf you still wish to complete your registration, please return to the %5$sEvent List%6$sEvent List%7$s and reselect your tickets if available. Please except our apologies for any inconvenience this may have caused.%8$s',
-                'event_espresso'
-            ),
-            '<h4 class="important-notice">',
-            '</h4>',
-            '<br />',
-            '<p>',
-            '<a href="' . get_post_type_archive_link('espresso_events') . '" title="',
-            '">',
-            '</a>',
-            '</p>'
-        );
-        EE_Registry::$i18n_js_strings['ajax_submit'] = apply_filters(
-            'FHEE__Single_Page_Checkout__translate_js_strings__ajax_submit',
-            true
-        );
-        EE_Registry::$i18n_js_strings['session_extension'] = absint(
-            apply_filters('FHEE__EE_Session__extend_expiration__seconds_added', 10 * MINUTE_IN_SECONDS)
-        );
-        EE_Registry::$i18n_js_strings['session_expiration'] = gmdate(
-            'M d, Y H:i:s',
-            EE_Registry::instance()->SSN->expiration() + (get_option('gmt_offset') * HOUR_IN_SECONDS)
-        );
-    }
-
-
-
-    /**
-     *    enqueue_styles_and_scripts
-     *
-     * @access        public
-     * @return        void
-     * @throws EE_Error
-     */
-    public function enqueue_styles_and_scripts()
-    {
-        // load css
-        wp_register_style(
-            'single_page_checkout',
-            SPCO_CSS_URL . 'single_page_checkout.css',
-            array('espresso_default'),
-            EVENT_ESPRESSO_VERSION
-        );
-        wp_enqueue_style('single_page_checkout');
-        // load JS
-        wp_register_script(
-            'jquery_plugin',
-            EE_THIRD_PARTY_URL . 'jquery	.plugin.min.js',
-            array('jquery'),
-            '1.0.1',
-            true
-        );
-        wp_register_script(
-            'jquery_countdown',
-            EE_THIRD_PARTY_URL . 'jquery	.countdown.min.js',
-            array('jquery_plugin'),
-            '2.0.2',
-            true
-        );
-        wp_register_script(
-            'single_page_checkout',
-            SPCO_JS_URL . 'single_page_checkout.js',
-            array('espresso_core', 'underscore', 'ee_form_section_validation', 'jquery_countdown'),
-            EVENT_ESPRESSO_VERSION,
-            true
-        );
-        if ($this->checkout->registration_form instanceof EE_Form_Section_Proper) {
-            $this->checkout->registration_form->enqueue_js();
-        }
-        if ($this->checkout->current_step->reg_form instanceof EE_Form_Section_Proper) {
-            $this->checkout->current_step->reg_form->enqueue_js();
-        }
-        wp_enqueue_script('single_page_checkout');
-        /**
-         * global action hook for enqueueing styles and scripts with
-         * spco calls.
-         */
-        do_action('AHEE__EED_Single_Page_Checkout__enqueue_styles_and_scripts', $this);
-        /**
-         * dynamic action hook for enqueueing styles and scripts with spco calls.
-         * The hook will end up being something like:
-         *      AHEE__EED_Single_Page_Checkout__enqueue_styles_and_scripts__attendee_information
-         */
-        do_action(
-            'AHEE__EED_Single_Page_Checkout__enqueue_styles_and_scripts__' . $this->checkout->current_step->slug(),
-            $this
-        );
-    }
-
-
-
-    /**
-     *    display the Registration Single Page Checkout Form
-     *
-     * @access    private
-     * @return    void
-     * @throws EE_Error
-     */
-    private function _display_spco_reg_form()
-    {
-        // if registering via the admin, just display the reg form for the current step
-        if ($this->checkout->admin_request) {
-            EE_Registry::instance()->REQ->add_output($this->checkout->current_step->display_reg_form());
-        } else {
-            // add powered by EE msg
-            add_action('AHEE__SPCO__reg_form_footer', array('EED_Single_Page_Checkout', 'display_registration_footer'));
-            $empty_cart = count(
-                $this->checkout->transaction->registrations($this->checkout->reg_cache_where_params)
-            ) < 1;
-            EE_Registry::$i18n_js_strings['empty_cart'] = $empty_cart;
-            $cookies_not_set_msg = '';
-            if ($empty_cart && ! isset($_COOKIE['ee_cookie_test'])) {
-                $cookies_not_set_msg = apply_filters(
-                    'FHEE__Single_Page_Checkout__display_spco_reg_form__cookies_not_set_msg',
-                    sprintf(
-                        __(
-                            '%1$s%3$sIt appears your browser is not currently set to accept Cookies%4$s%5$sIn order to register for events, you need to enable cookies.%7$sIf you require assistance, then click the following link to learn how to %8$senable cookies%9$s%6$s%2$s',
-                            'event_espresso'
-                        ),
-                        '<div class="ee-attention">',
-                        '</div>',
-                        '<h6 class="important-notice">',
-                        '</h6>',
-                        '<p>',
-                        '</p>',
-                        '<br />',
-                        '<a href="http://www.whatarecookies.com/enable.asp" target="_blank">',
-                        '</a>'
-                    )
-                );
-            }
-            $this->checkout->registration_form = new EE_Form_Section_Proper(
-                array(
-                    'name'            => 'single-page-checkout',
-                    'html_id'         => 'ee-single-page-checkout-dv',
-                    'layout_strategy' =>
-                        new EE_Template_Layout(
-                            array(
-                                'layout_template_file' => SPCO_TEMPLATES_PATH . 'registration_page_wrapper.template.php',
-                                'template_args'        => array(
-                                    'empty_cart'              => $empty_cart,
-                                    'revisit'                 => $this->checkout->revisit,
-                                    'reg_steps'               => $this->checkout->reg_steps,
-                                    'next_step'               => $this->checkout->next_step instanceof EE_SPCO_Reg_Step
-                                        ? $this->checkout->next_step->slug()
-                                        : '',
-                                    'cancel_page_url'         => $this->checkout->cancel_page_url,
-                                    'empty_msg'               => apply_filters(
-                                        'FHEE__Single_Page_Checkout__display_spco_reg_form__empty_msg',
-                                        sprintf(
-                                            __(
-                                                'You need to %1$sReturn to Events list%2$sselect at least one event%3$s before you can proceed with the registration process.',
-                                                'event_espresso'
-                                            ),
-                                            '<a href="'
-                                            . get_post_type_archive_link('espresso_events')
-                                            . '" title="',
-                                            '">',
-                                            '</a>'
-                                        )
-                                    ),
-                                    'cookies_not_set_msg'     => $cookies_not_set_msg,
-                                    'registration_time_limit' => $this->checkout->get_registration_time_limit(),
-                                    'session_expiration'      => gmdate(
-                                        'M d, Y H:i:s',
-                                        EE_Registry::instance()->SSN->expiration()
-                                        + (get_option('gmt_offset') * HOUR_IN_SECONDS)
-                                    ),
-                                ),
-                            )
-                        ),
-                )
-            );
-            // load template and add to output sent that gets filtered into the_content()
-            EE_Registry::instance()->REQ->add_output($this->checkout->registration_form->get_html());
-        }
-    }
-
-
-
-    /**
-     *    add_extra_finalize_registration_inputs
-     *
-     * @access    public
-     * @param $next_step
-     * @internal  param string $label
-     * @return void
-     */
-    public function add_extra_finalize_registration_inputs($next_step)
-    {
-        if ($next_step === 'finalize_registration') {
-            echo '<div id="spco-extra-finalize_registration-inputs-dv"></div>';
-        }
-    }
-
-
-
-    /**
-     *    display_registration_footer
-     *
-     * @access    public
-     * @return    string
-     */
-    public static function display_registration_footer()
-    {
-        if (
-        apply_filters(
-            'FHEE__EE_Front__Controller__show_reg_footer',
-            EE_Registry::instance()->CFG->admin->show_reg_footer
-        )
-        ) {
-            add_filter(
-                'FHEE__EEH_Template__powered_by_event_espresso__url',
-                function ($url) {
-                    return apply_filters('FHEE__EE_Front_Controller__registration_footer__url', $url);
-                }
-            );
-            echo apply_filters(
-                'FHEE__EE_Front_Controller__display_registration_footer',
-                \EEH_Template::powered_by_event_espresso(
-                    '',
-                    'espresso-registration-footer-dv',
-                    array('utm_content' => 'registration_checkout')
-                )
-            );
-        }
-        return '';
-    }
-
-
-
-    /**
-     *    unlock_transaction
-     *
-     * @access    public
-     * @return    void
-     * @throws EE_Error
-     */
-    public function unlock_transaction()
-    {
-        if ($this->checkout->transaction instanceof EE_Transaction) {
-            $this->checkout->transaction->unlock();
-        }
-    }
-
-
-
-    /**
-     *        _setup_redirect
-     *
-     * @access    private
-     * @return void
-     */
-    private function _setup_redirect()
-    {
-        if ($this->checkout->continue_reg && $this->checkout->next_step instanceof EE_SPCO_Reg_Step) {
-            $this->checkout->redirect = true;
-            if (empty($this->checkout->redirect_url)) {
-                $this->checkout->redirect_url = $this->checkout->next_step->reg_step_url();
-            }
-            $this->checkout->redirect_url = apply_filters(
-                'FHEE__EED_Single_Page_Checkout___setup_redirect__checkout_redirect_url',
-                $this->checkout->redirect_url,
-                $this->checkout
-            );
-        }
-    }
-
-
-
-    /**
-     *   handle ajax message responses and redirects
-     *
-     * @access public
-     * @return void
-     * @throws EE_Error
-     */
-    public function go_to_next_step()
-    {
-        if (EE_Registry::instance()->REQ->ajax) {
-            // capture contents of output buffer we started earlier in the request, and insert into JSON response
-            $this->checkout->json_response->set_unexpected_errors(ob_get_clean());
-        }
-        $this->unlock_transaction();
-        // just return for these conditions
-        if (
-            $this->checkout->admin_request
-            || $this->checkout->action === 'redirect_form'
-            || $this->checkout->action === 'update_checkout'
-        ) {
-            return;
-        }
-        // AJAX response
-        $this->_handle_json_response();
-        // redirect to next step or the Thank You page
-        $this->_handle_html_redirects();
-        // hmmm... must be something wrong, so let's just display the form again !
-        $this->_display_spco_reg_form();
-    }
-
-
-
-    /**
-     *   _handle_json_response
-     *
-     * @access protected
-     * @return void
-     */
-    protected function _handle_json_response()
-    {
-        // if this is an ajax request
-        if (EE_Registry::instance()->REQ->ajax) {
-            // DEBUG LOG
-            //$this->checkout->log(
-            //	__CLASS__, __FUNCTION__, __LINE__,
-            //	array(
-            //		'json_response_redirect_url' => $this->checkout->json_response->redirect_url(),
-            //		'redirect'                   => $this->checkout->redirect,
-            //		'continue_reg'               => $this->checkout->continue_reg,
-            //	)
-            //);
-            $this->checkout->json_response->set_registration_time_limit(
-                $this->checkout->get_registration_time_limit()
-            );
-            $this->checkout->json_response->set_payment_amount($this->checkout->amount_owing);
-            // just send the ajax (
-            $json_response = apply_filters(
-                'FHEE__EE_Single_Page_Checkout__JSON_response',
-                $this->checkout->json_response
-            );
-            echo $json_response;
-            exit();
-        }
-    }
-
-
-
-    /**
-     *   _handle_redirects
-     *
-     * @access protected
-     * @return void
-     */
-    protected function _handle_html_redirects()
-    {
-        // going somewhere ?
-        if ($this->checkout->redirect && ! empty($this->checkout->redirect_url)) {
-            // store notices in a transient
-            EE_Error::get_notices(false, true, true);
-            // DEBUG LOG
-            //$this->checkout->log(
-            //	__CLASS__, __FUNCTION__, __LINE__,
-            //	array(
-            //		'headers_sent' => headers_sent(),
-            //		'redirect_url'     => $this->checkout->redirect_url,
-            //		'headers_list'    => headers_list(),
-            //	)
-            //);
-            wp_safe_redirect($this->checkout->redirect_url);
-            exit();
-        }
-    }
-
-
-
-    /**
-     *   set_checkout_anchor
-     *
-     * @access public
-     * @return void
-     */
-    public function set_checkout_anchor()
-    {
-        echo '<a id="checkout" style="float: left; margin-left: -999em;"></a>';
-    }
+	/**
+	 * $_initialized - has the SPCO controller already been initialized ?
+	 *
+	 * @access private
+	 * @var bool $_initialized
+	 */
+	private static $_initialized = false;
+
+
+	/**
+	 * $_checkout_verified - is the EE_Checkout verified as correct for this request ?
+	 *
+	 * @access private
+	 * @var bool $_valid_checkout
+	 */
+	private static $_checkout_verified = true;
+
+	/**
+	 *    $_reg_steps_array - holds initial array of reg steps
+	 *
+	 * @access private
+	 * @var array $_reg_steps_array
+	 */
+	private static $_reg_steps_array = array();
+
+	/**
+	 *    $checkout - EE_Checkout object for handling the properties of the current checkout process
+	 *
+	 * @access public
+	 * @var EE_Checkout $checkout
+	 */
+	public $checkout;
+
+
+
+	/**
+	 * @return EED_Module|EED_Single_Page_Checkout
+	 */
+	public static function instance()
+	{
+		add_filter('EED_Single_Page_Checkout__SPCO_active', '__return_true');
+		return parent::get_instance(__CLASS__);
+	}
+
+
+
+	/**
+	 * @return EE_CART
+	 */
+	public function cart()
+	{
+		return $this->checkout->cart;
+	}
+
+
+
+	/**
+	 * @return EE_Transaction
+	 */
+	public function transaction()
+	{
+		return $this->checkout->transaction;
+	}
+
+
+
+	/**
+	 *    set_hooks - for hooking into EE Core, other modules, etc
+	 *
+	 * @access    public
+	 * @return    void
+	 * @throws EE_Error
+	 */
+	public static function set_hooks()
+	{
+		EED_Single_Page_Checkout::set_definitions();
+	}
+
+
+
+	/**
+	 *    set_hooks_admin - for hooking into EE Admin Core, other modules, etc
+	 *
+	 * @access    public
+	 * @return    void
+	 * @throws EE_Error
+	 */
+	public static function set_hooks_admin()
+	{
+		EED_Single_Page_Checkout::set_definitions();
+		if ( ! (defined('DOING_AJAX') && DOING_AJAX)) {
+			return;
+		}
+		// going to start an output buffer in case anything gets accidentally output
+		// that might disrupt our JSON response
+		ob_start();
+		EED_Single_Page_Checkout::load_request_handler();
+		EED_Single_Page_Checkout::load_reg_steps();
+		// set ajax hooks
+		add_action('wp_ajax_process_reg_step', array('EED_Single_Page_Checkout', 'process_reg_step'));
+		add_action('wp_ajax_nopriv_process_reg_step', array('EED_Single_Page_Checkout', 'process_reg_step'));
+		add_action('wp_ajax_display_spco_reg_step', array('EED_Single_Page_Checkout', 'display_reg_step'));
+		add_action('wp_ajax_nopriv_display_spco_reg_step', array('EED_Single_Page_Checkout', 'display_reg_step'));
+		add_action('wp_ajax_update_reg_step', array('EED_Single_Page_Checkout', 'update_reg_step'));
+		add_action('wp_ajax_nopriv_update_reg_step', array('EED_Single_Page_Checkout', 'update_reg_step'));
+	}
+
+
+
+	/**
+	 *    process ajax request
+	 *
+	 * @param string $ajax_action
+	 * @throws EE_Error
+	 */
+	public static function process_ajax_request($ajax_action)
+	{
+		EE_Registry::instance()->REQ->set('action', $ajax_action);
+		EED_Single_Page_Checkout::instance()->_initialize();
+	}
+
+
+
+	/**
+	 *    ajax display registration step
+	 *
+	 * @throws EE_Error
+	 */
+	public static function display_reg_step()
+	{
+		EED_Single_Page_Checkout::process_ajax_request('display_spco_reg_step');
+	}
+
+
+
+	/**
+	 *    ajax process registration step
+	 *
+	 * @throws EE_Error
+	 */
+	public static function process_reg_step()
+	{
+		EED_Single_Page_Checkout::process_ajax_request('process_reg_step');
+	}
+
+
+
+	/**
+	 *    ajax process registration step
+	 *
+	 * @throws EE_Error
+	 */
+	public static function update_reg_step()
+	{
+		EED_Single_Page_Checkout::process_ajax_request('update_reg_step');
+	}
+
+
+
+	/**
+	 *   update_checkout
+	 *
+	 * @access public
+	 * @return void
+	 * @throws EE_Error
+	 */
+	public static function update_checkout()
+	{
+		EED_Single_Page_Checkout::process_ajax_request('update_checkout');
+	}
+
+
+
+	/**
+	 *    load_request_handler
+	 *
+	 * @access    public
+	 * @return    void
+	 */
+	public static function load_request_handler()
+	{
+		// load core Request_Handler class
+		if (EE_Registry::instance()->REQ !== null) {
+			EE_Registry::instance()->load_core('Request_Handler');
+		}
+	}
+
+
+
+	/**
+	 *    set_definitions
+	 *
+	 * @access    public
+	 * @return    void
+	 * @throws EE_Error
+	 */
+	public static function set_definitions()
+	{
+		if(defined('SPCO_BASE_PATH')) {
+			return;
+		}
+		define(
+			'SPCO_BASE_PATH',
+			rtrim(str_replace(array('\\', '/'), DS, plugin_dir_path(__FILE__)), DS) . DS
+		);
+		define('SPCO_CSS_URL', plugin_dir_url(__FILE__) . 'css' . DS);
+		define('SPCO_IMG_URL', plugin_dir_url(__FILE__) . 'img' . DS);
+		define('SPCO_JS_URL', plugin_dir_url(__FILE__) . 'js' . DS);
+		define('SPCO_INC_PATH', SPCO_BASE_PATH . 'inc' . DS);
+		define('SPCO_REG_STEPS_PATH', SPCO_BASE_PATH . 'reg_steps' . DS);
+		define('SPCO_TEMPLATES_PATH', SPCO_BASE_PATH . 'templates' . DS);
+		EEH_Autoloader::register_autoloaders_for_each_file_in_folder(SPCO_BASE_PATH, true);
+		EE_Registry::$i18n_js_strings['registration_expiration_notice'] = sprintf(
+			__('%1$sWe\'re sorry, but you\'re registration time has expired.%2$s%4$sIf you still wish to complete your registration, please return to the %5$sEvent List%6$sEvent List%7$s and reselect your tickets if available. Please except our apologies for any inconvenience this may have caused.%8$s',
+				'event_espresso'),
+			'<h4 class="important-notice">',
+			'</h4>',
+			'<br />',
+			'<p>',
+			'<a href="' . get_post_type_archive_link('espresso_events') . '" title="',
+			'">',
+			'</a>',
+			'</p>'
+		);
+	}
+
+
+
+	/**
+	 * load_reg_steps
+	 * loads and instantiates each reg step based on the EE_Registry::instance()->CFG->registration->reg_steps array
+	 *
+	 * @access    private
+	 * @throws EE_Error
+	 */
+	public static function load_reg_steps()
+	{
+		static $reg_steps_loaded = false;
+		if ($reg_steps_loaded) {
+			return;
+		}
+		// filter list of reg_steps
+		$reg_steps_to_load = (array)apply_filters(
+			'AHEE__SPCO__load_reg_steps__reg_steps_to_load',
+			EED_Single_Page_Checkout::get_reg_steps()
+		);
+		// sort by key (order)
+		ksort($reg_steps_to_load);
+		// loop through folders
+		foreach ($reg_steps_to_load as $order => $reg_step) {
+			// we need a
+			if (isset($reg_step['file_path'], $reg_step['class_name'], $reg_step['slug'])) {
+				// copy over to the reg_steps_array
+				EED_Single_Page_Checkout::$_reg_steps_array[$order] = $reg_step;
+				// register custom key route for each reg step
+				// ie: step=>"slug" - this is the entire reason we load the reg steps array now
+				EE_Config::register_route(
+					$reg_step['slug'],
+					'EED_Single_Page_Checkout',
+					'run',
+					'step'
+				);
+				// add AJAX or other hooks
+				if (isset($reg_step['has_hooks']) && $reg_step['has_hooks']) {
+					// setup autoloaders if necessary
+					if ( ! class_exists($reg_step['class_name'])) {
+						EEH_Autoloader::register_autoloaders_for_each_file_in_folder(
+							$reg_step['file_path'],
+							true
+						);
+					}
+					if (is_callable($reg_step['class_name'], 'set_hooks')) {
+						call_user_func(array($reg_step['class_name'], 'set_hooks'));
+					}
+				}
+			}
+		}
+		$reg_steps_loaded = true;
+	}
+
+
+
+	/**
+	 *    get_reg_steps
+	 *
+	 * @access    public
+	 * @return    array
+	 */
+	public static function get_reg_steps()
+	{
+		$reg_steps = EE_Registry::instance()->CFG->registration->reg_steps;
+		if (empty($reg_steps)) {
+			$reg_steps = array(
+				10  => array(
+					'file_path'  => SPCO_REG_STEPS_PATH . 'attendee_information',
+					'class_name' => 'EE_SPCO_Reg_Step_Attendee_Information',
+					'slug'       => 'attendee_information',
+					'has_hooks'  => false,
+				),
+				20  => array(
+					'file_path'  => SPCO_REG_STEPS_PATH . 'registration_confirmation',
+					'class_name' => 'EE_SPCO_Reg_Step_Registration_Confirmation',
+					'slug'       => 'registration_confirmation',
+					'has_hooks'  => false,
+				),
+				30  => array(
+					'file_path'  => SPCO_REG_STEPS_PATH . 'payment_options',
+					'class_name' => 'EE_SPCO_Reg_Step_Payment_Options',
+					'slug'       => 'payment_options',
+					'has_hooks'  => true,
+				),
+				999 => array(
+					'file_path'  => SPCO_REG_STEPS_PATH . 'finalize_registration',
+					'class_name' => 'EE_SPCO_Reg_Step_Finalize_Registration',
+					'slug'       => 'finalize_registration',
+					'has_hooks'  => false,
+				),
+			);
+		}
+		return $reg_steps;
+	}
+
+
+
+	/**
+	 *    registration_checkout_for_admin
+	 *
+	 * @access    public
+	 * @return    string
+	 * @throws EE_Error
+	 */
+	public static function registration_checkout_for_admin()
+	{
+		EED_Single_Page_Checkout::load_request_handler();
+		EE_Registry::instance()->REQ->set('step', 'attendee_information');
+		EE_Registry::instance()->REQ->set('action', 'display_spco_reg_step');
+		EE_Registry::instance()->REQ->set('process_form_submission', false);
+		EED_Single_Page_Checkout::instance()->_initialize();
+		EED_Single_Page_Checkout::instance()->_display_spco_reg_form();
+		return EE_Registry::instance()->REQ->get_output();
+	}
+
+
+
+	/**
+	 * process_registration_from_admin
+	 *
+	 * @access public
+	 * @return \EE_Transaction
+	 * @throws EE_Error
+	 */
+	public static function process_registration_from_admin()
+	{
+		EED_Single_Page_Checkout::load_request_handler();
+		EE_Registry::instance()->REQ->set('step', 'attendee_information');
+		EE_Registry::instance()->REQ->set('action', 'process_reg_step');
+		EE_Registry::instance()->REQ->set('process_form_submission', true);
+		EED_Single_Page_Checkout::instance()->_initialize();
+		if (EED_Single_Page_Checkout::instance()->checkout->current_step->completed()) {
+			$final_reg_step = end(EED_Single_Page_Checkout::instance()->checkout->reg_steps);
+			if ($final_reg_step instanceof EE_SPCO_Reg_Step_Finalize_Registration) {
+				EED_Single_Page_Checkout::instance()->checkout->set_reg_step_initiated($final_reg_step);
+				if ($final_reg_step->process_reg_step()) {
+					$final_reg_step->set_completed();
+					EED_Single_Page_Checkout::instance()->checkout->update_txn_reg_steps_array();
+					return EED_Single_Page_Checkout::instance()->checkout->transaction;
+				}
+			}
+		}
+		return null;
+	}
+
+
+
+	/**
+	 *    run
+	 *
+	 * @access    public
+	 * @param WP_Query $WP_Query
+	 * @return    void
+	 * @throws EE_Error
+	 */
+	public function run($WP_Query)
+	{
+		if (
+			$WP_Query instanceof WP_Query
+			&& $WP_Query->is_main_query()
+			&& apply_filters('FHEE__EED_Single_Page_Checkout__run', true)
+			&& $this->_is_reg_checkout()
+		) {
+			$this->_initialize();
+		}
+	}
+
+
+
+	/**
+	 * determines whether current url matches reg page url
+	 *
+	 * @return bool
+	 */
+	protected function _is_reg_checkout()
+	{
+		// get current permalink for reg page without any extra query args
+		$reg_page_url = \get_permalink(EE_Config::instance()->core->reg_page_id);
+		// get request URI for current request, but without the scheme or host
+		$current_request_uri = \EEH_URL::filter_input_server_url('REQUEST_URI');
+		$current_request_uri = html_entity_decode($current_request_uri);
+		// get array of query args from the current request URI
+		$query_args = \EEH_URL::get_query_string($current_request_uri);
+		// grab page id if it is set
+		$page_id = isset($query_args['page_id']) ? absint($query_args['page_id']) : 0;
+		// and remove the page id from the query args (we will re-add it later)
+		unset($query_args['page_id']);
+		// now strip all query args from current request URI
+		$current_request_uri = remove_query_arg(array_keys($query_args), $current_request_uri);
+		// and re-add the page id if it was set
+		if ($page_id) {
+			$current_request_uri = add_query_arg('page_id', $page_id, $current_request_uri);
+		}
+		// remove slashes and ?
+		$current_request_uri = trim($current_request_uri, '?/');
+		// is current request URI part of the known full reg page URL ?
+		return ! empty($current_request_uri) && strpos($reg_page_url, $current_request_uri) !== false;
+	}
+
+
+
+	/**
+	 * @param WP_Query $wp_query
+	 * @return    void
+	 * @throws EE_Error
+	 */
+	public static function init($wp_query)
+	{
+		EED_Single_Page_Checkout::instance()->run($wp_query);
+	}
+
+
+
+	/**
+	 *    _initialize - initial module setup
+	 *
+	 * @access    private
+	 * @throws EE_Error
+	 * @return    void
+	 */
+	private function _initialize()
+	{
+		// ensure SPCO doesn't run twice
+		if (EED_Single_Page_Checkout::$_initialized) {
+			return;
+		}
+		try {
+			EED_Single_Page_Checkout::load_reg_steps();
+			$this->_verify_session();
+			// setup the EE_Checkout object
+			$this->checkout = $this->_initialize_checkout();
+			// filter checkout
+			$this->checkout = apply_filters('FHEE__EED_Single_Page_Checkout___initialize__checkout', $this->checkout);
+			// get the $_GET
+			$this->_get_request_vars();
+			if ($this->_block_bots()) {
+				return;
+			}
+			// filter continue_reg
+			$this->checkout->continue_reg = apply_filters(
+				'FHEE__EED_Single_Page_Checkout__init___continue_reg',
+				true,
+				$this->checkout
+			);
+			// load the reg steps array
+			if ( ! $this->_load_and_instantiate_reg_steps()) {
+				EED_Single_Page_Checkout::$_initialized = true;
+				return;
+			}
+			// set the current step
+			$this->checkout->set_current_step($this->checkout->step);
+			// and the next step
+			$this->checkout->set_next_step();
+			// verify that everything has been setup correctly
+			if ( ! ($this->_verify_transaction_and_get_registrations() && $this->_final_verifications())) {
+				EED_Single_Page_Checkout::$_initialized = true;
+				return;
+			}
+			// lock the transaction
+			$this->checkout->transaction->lock();
+			// make sure all of our cached objects are added to their respective model entity mappers
+			$this->checkout->refresh_all_entities();
+			// set amount owing
+			$this->checkout->amount_owing = $this->checkout->transaction->remaining();
+			// initialize each reg step, which gives them the chance to potentially alter the process
+			$this->_initialize_reg_steps();
+			// DEBUG LOG
+			//$this->checkout->log( __CLASS__, __FUNCTION__, __LINE__ );
+			// get reg form
+			if( ! $this->_check_form_submission()) {
+				EED_Single_Page_Checkout::$_initialized = true;
+				return;
+			}
+			// checkout the action!!!
+			$this->_process_form_action();
+			// add some style and make it dance
+			$this->add_styles_and_scripts();
+			// kk... SPCO has successfully run
+			EED_Single_Page_Checkout::$_initialized = true;
+			// set no cache headers and constants
+			EE_System::do_not_cache();
+			// add anchor
+			add_action('loop_start', array($this, 'set_checkout_anchor'), 1);
+			// remove transaction lock
+			add_action('shutdown', array($this, 'unlock_transaction'), 1);
+		} catch (Exception $e) {
+			EE_Error::add_error($e->getMessage(), __FILE__, __FUNCTION__, __LINE__);
+		}
+	}
+
+
+
+	/**
+	 *    _verify_session
+	 * checks that the session is valid and not expired
+	 *
+	 * @access    private
+	 * @throws EE_Error
+	 */
+	private function _verify_session()
+	{
+		if ( ! EE_Registry::instance()->SSN instanceof EE_Session) {
+			throw new EE_Error(__('The EE_Session class could not be loaded.', 'event_espresso'));
+		}
+		$clear_session_requested = filter_var(
+			EE_Registry::instance()->REQ->get('clear_session', false),
+			FILTER_VALIDATE_BOOLEAN
+		);
+		// is session still valid ?
+		if ($clear_session_requested
+			|| ( EE_Registry::instance()->SSN->expired()
+			  && EE_Registry::instance()->REQ->get('e_reg_url_link', '') === ''
+			)
+		) {
+			$this->checkout = new EE_Checkout();
+			EE_Registry::instance()->SSN->clear_session(__CLASS__, __FUNCTION__);
+			// EE_Registry::instance()->SSN->reset_cart();
+			// EE_Registry::instance()->SSN->reset_checkout();
+			// EE_Registry::instance()->SSN->reset_transaction();
+			if (! $clear_session_requested) {
+				EE_Error::add_attention(
+					EE_Registry::$i18n_js_strings['registration_expiration_notice'],
+					__FILE__, __FUNCTION__, __LINE__
+				);
+			}
+			// EE_Registry::instance()->SSN->reset_expired();
+		}
+	}
+
+
+
+	/**
+	 *    _initialize_checkout
+	 * loads and instantiates EE_Checkout
+	 *
+	 * @access    private
+	 * @throws EE_Error
+	 * @return EE_Checkout
+	 */
+	private function _initialize_checkout()
+	{
+		// look in session for existing checkout
+		/** @type EE_Checkout $checkout */
+		$checkout = EE_Registry::instance()->SSN->checkout();
+		// verify
+		if ( ! $checkout instanceof EE_Checkout) {
+			// instantiate EE_Checkout object for handling the properties of the current checkout process
+			$checkout = EE_Registry::instance()->load_file(
+				SPCO_INC_PATH,
+				'EE_Checkout',
+				'class', array(),
+				false
+			);
+		} else {
+			if ($checkout->current_step->is_final_step() && $checkout->exit_spco() === true) {
+				$this->unlock_transaction();
+				wp_safe_redirect($checkout->redirect_url);
+				exit();
+			}
+		}
+		$checkout = apply_filters('FHEE__EED_Single_Page_Checkout___initialize_checkout__checkout', $checkout);
+		// verify again
+		if ( ! $checkout instanceof EE_Checkout) {
+			throw new EE_Error(__('The EE_Checkout class could not be loaded.', 'event_espresso'));
+		}
+		// reset anything that needs a clean slate for each request
+		$checkout->reset_for_current_request();
+		return $checkout;
+	}
+
+
+
+	/**
+	 *    _get_request_vars
+	 *
+	 * @access    private
+	 * @return    void
+	 * @throws EE_Error
+	 */
+	private function _get_request_vars()
+	{
+		// load classes
+		EED_Single_Page_Checkout::load_request_handler();
+		//make sure this request is marked as belonging to EE
+		EE_Registry::instance()->REQ->set_espresso_page(true);
+		// which step is being requested ?
+		$this->checkout->step = EE_Registry::instance()->REQ->get('step', $this->_get_first_step());
+		// which step is being edited ?
+		$this->checkout->edit_step = EE_Registry::instance()->REQ->get('edit_step', '');
+		// and what we're doing on the current step
+		$this->checkout->action = EE_Registry::instance()->REQ->get('action', 'display_spco_reg_step');
+		// timestamp
+		$this->checkout->uts = EE_Registry::instance()->REQ->get('uts', 0);
+		// returning to edit ?
+		$this->checkout->reg_url_link = EE_Registry::instance()->REQ->get('e_reg_url_link', '');
+		// or some other kind of revisit ?
+		$this->checkout->revisit = filter_var(
+			EE_Registry::instance()->REQ->get('revisit', false),
+			FILTER_VALIDATE_BOOLEAN
+		);
+		// and whether or not to generate a reg form for this request
+		$this->checkout->generate_reg_form = filter_var(
+			EE_Registry::instance()->REQ->get('generate_reg_form', true),
+			FILTER_VALIDATE_BOOLEAN
+		);
+		// and whether or not to process a reg form submission for this request
+		$this->checkout->process_form_submission = filter_var(
+			EE_Registry::instance()->REQ->get(
+				'process_form_submission',
+				$this->checkout->action === 'process_reg_step'
+			),
+			FILTER_VALIDATE_BOOLEAN
+		);
+		$this->checkout->process_form_submission = filter_var(
+			$this->checkout->action !== 'display_spco_reg_step'
+				? $this->checkout->process_form_submission
+				: false,
+			FILTER_VALIDATE_BOOLEAN
+		);
+		// $this->_display_request_vars();
+	}
+
+
+
+	/**
+	 *  _display_request_vars
+	 *
+	 * @access    protected
+	 * @return    void
+	 */
+	protected function _display_request_vars()
+	{
+		if ( ! WP_DEBUG) {
+			return;
+		}
+		EEH_Debug_Tools::printr($_REQUEST, '$_REQUEST', __FILE__, __LINE__);
+		EEH_Debug_Tools::printr($this->checkout->step, '$this->checkout->step', __FILE__, __LINE__);
+		EEH_Debug_Tools::printr($this->checkout->edit_step, '$this->checkout->edit_step', __FILE__, __LINE__);
+		EEH_Debug_Tools::printr($this->checkout->action, '$this->checkout->action', __FILE__, __LINE__);
+		EEH_Debug_Tools::printr($this->checkout->reg_url_link, '$this->checkout->reg_url_link', __FILE__, __LINE__);
+		EEH_Debug_Tools::printr($this->checkout->revisit, '$this->checkout->revisit', __FILE__, __LINE__);
+		EEH_Debug_Tools::printr($this->checkout->generate_reg_form, '$this->checkout->generate_reg_form', __FILE__, __LINE__);
+		EEH_Debug_Tools::printr($this->checkout->process_form_submission, '$this->checkout->process_form_submission', __FILE__, __LINE__);
+	}
+
+
+
+	/**
+	 * _block_bots
+	 * checks that the incoming request has either of the following set:
+	 *  a uts (unix timestamp) which indicates that the request was redirected from the Ticket Selector
+	 *  a REG URL Link, which indicates that the request is a return visit to SPCO for a valid TXN
+	 * so if you're not coming from the Ticket Selector nor returning for a valid IP...
+	 * then where you coming from man?
+	 *
+	 * @return boolean
+	 */
+	private function _block_bots()
+	{
+		$invalid_checkout_access = EED_Invalid_Checkout_Access::getInvalidCheckoutAccess();
+		if ($invalid_checkout_access->checkoutAccessIsInvalid($this->checkout)) {
+			return true;
+		}
+		return false;
+	}
+
+
+
+	/**
+	 *    _get_first_step
+	 *  gets slug for first step in $_reg_steps_array
+	 *
+	 * @access    private
+	 * @throws EE_Error
+	 * @return    string
+	 */
+	private function _get_first_step()
+	{
+		$first_step = reset(EED_Single_Page_Checkout::$_reg_steps_array);
+		return isset($first_step['slug']) ? $first_step['slug'] : 'attendee_information';
+	}
+
+
+
+	/**
+	 *    _load_and_instantiate_reg_steps
+	 *  instantiates each reg step based on the loaded reg_steps array
+	 *
+	 * @access    private
+	 * @throws EE_Error
+	 * @return    bool
+	 */
+	private function _load_and_instantiate_reg_steps()
+	{
+		do_action('AHEE__Single_Page_Checkout___load_and_instantiate_reg_steps__start', $this->checkout);
+		// have reg_steps already been instantiated ?
+		if (
+			empty($this->checkout->reg_steps)
+			|| apply_filters('FHEE__Single_Page_Checkout__load_reg_steps__reload_reg_steps', false, $this->checkout)
+		) {
+			// if not, then loop through raw reg steps array
+			foreach (EED_Single_Page_Checkout::$_reg_steps_array as $order => $reg_step) {
+				if ( ! $this->_load_and_instantiate_reg_step($reg_step, $order)) {
+					return false;
+				}
+			}
+			EE_Registry::instance()->CFG->registration->skip_reg_confirmation = true;
+			EE_Registry::instance()->CFG->registration->reg_confirmation_last = true;
+			// skip the registration_confirmation page ?
+			if (EE_Registry::instance()->CFG->registration->skip_reg_confirmation) {
+				// just remove it from the reg steps array
+				$this->checkout->remove_reg_step('registration_confirmation', false);
+			} else if (
+				isset($this->checkout->reg_steps['registration_confirmation'])
+				&& EE_Registry::instance()->CFG->registration->reg_confirmation_last
+			) {
+				// set the order to something big like 100
+				$this->checkout->set_reg_step_order('registration_confirmation', 100);
+			}
+			// filter the array for good luck
+			$this->checkout->reg_steps = apply_filters(
+				'FHEE__Single_Page_Checkout__load_reg_steps__reg_steps',
+				$this->checkout->reg_steps
+			);
+			// finally re-sort based on the reg step class order properties
+			$this->checkout->sort_reg_steps();
+		} else {
+			foreach ($this->checkout->reg_steps as $reg_step) {
+				// set all current step stati to FALSE
+				$reg_step->set_is_current_step(false);
+			}
+		}
+		if (empty($this->checkout->reg_steps)) {
+			EE_Error::add_error(
+				__('No Reg Steps were loaded..', 'event_espresso'),
+				__FILE__, __FUNCTION__, __LINE__
+			);
+			return false;
+		}
+		// make reg step details available to JS
+		$this->checkout->set_reg_step_JSON_info();
+		return true;
+	}
+
+
+
+	/**
+	 *     _load_and_instantiate_reg_step
+	 *
+	 * @access    private
+	 * @param array $reg_step
+	 * @param int   $order
+	 * @return bool
+	 */
+	private function _load_and_instantiate_reg_step($reg_step = array(), $order = 0)
+	{
+		// we need a file_path, class_name, and slug to add a reg step
+		if (isset($reg_step['file_path'], $reg_step['class_name'], $reg_step['slug'])) {
+			// if editing a specific step, but this is NOT that step... (and it's not the 'finalize_registration' step)
+			if (
+				$this->checkout->reg_url_link
+				&& $this->checkout->step !== $reg_step['slug']
+				&& $reg_step['slug'] !== 'finalize_registration'
+				// normally at this point we would NOT load the reg step, but this filter can change that
+				&& apply_filters(
+					'FHEE__Single_Page_Checkout___load_and_instantiate_reg_step__bypass_reg_step',
+					true,
+					$reg_step,
+					$this->checkout
+				)
+			) {
+				return true;
+			}
+			// instantiate step class using file path and class name
+			$reg_step_obj = EE_Registry::instance()->load_file(
+				$reg_step['file_path'],
+				$reg_step['class_name'],
+				'class',
+				$this->checkout,
+				false
+			);
+			// did we gets the goods ?
+			if ($reg_step_obj instanceof EE_SPCO_Reg_Step) {
+				// set reg step order based on config
+				$reg_step_obj->set_order($order);
+				// add instantiated reg step object to the master reg steps array
+				$this->checkout->add_reg_step($reg_step_obj);
+			} else {
+				EE_Error::add_error(
+					__('The current step could not be set.', 'event_espresso'),
+					__FILE__, __FUNCTION__, __LINE__
+				);
+				return false;
+			}
+		} else {
+			if (WP_DEBUG) {
+				EE_Error::add_error(
+					sprintf(
+						__(
+							'A registration step could not be loaded. One or more of the following data points is invalid:%4$s%5$sFile Path: %1$s%6$s%5$sClass Name: %2$s%6$s%5$sSlug: %3$s%6$s%7$s',
+							'event_espresso'
+						),
+						isset($reg_step['file_path']) ? $reg_step['file_path'] : '',
+						isset($reg_step['class_name']) ? $reg_step['class_name'] : '',
+						isset($reg_step['slug']) ? $reg_step['slug'] : '',
+						'<ul>',
+						'<li>',
+						'</li>',
+						'</ul>'
+					),
+					__FILE__, __FUNCTION__, __LINE__
+				);
+			}
+			return false;
+		}
+		return true;
+	}
+
+
+	/**
+	 * _verify_transaction_and_get_registrations
+	 *
+	 * @access private
+	 * @return bool
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidEntityException
+	 * @throws EE_Error
+	 */
+	private function _verify_transaction_and_get_registrations()
+	{
+		// was there already a valid transaction in the checkout from the session ?
+		if ( ! $this->checkout->transaction instanceof EE_Transaction) {
+			// get transaction from db or session
+			$this->checkout->transaction = $this->checkout->reg_url_link && ! is_admin()
+				? $this->_get_transaction_and_cart_for_previous_visit()
+				: $this->_get_cart_for_current_session_and_setup_new_transaction();
+			if ( ! $this->checkout->transaction instanceof EE_Transaction) {
+				EE_Error::add_error(
+					__('Your Registration and Transaction information could not be retrieved from the db.',
+						'event_espresso'),
+					__FILE__, __FUNCTION__, __LINE__
+				);
+				$this->checkout->transaction = EE_Transaction::new_instance();
+				// add some style and make it dance
+				$this->add_styles_and_scripts();
+				EED_Single_Page_Checkout::$_initialized = true;
+				return false;
+			}
+			// and the registrations for the transaction
+			$this->_get_registrations($this->checkout->transaction);
+		}
+		return true;
+	}
+
+
+
+	/**
+	 * _get_transaction_and_cart_for_previous_visit
+	 *
+	 * @access private
+	 * @return mixed EE_Transaction|NULL
+	 */
+	private function _get_transaction_and_cart_for_previous_visit()
+	{
+		/** @var $TXN_model EEM_Transaction */
+		$TXN_model = EE_Registry::instance()->load_model('Transaction');
+		// because the reg_url_link is present in the request,
+		// this is a return visit to SPCO, so we'll get the transaction data from the db
+		$transaction = $TXN_model->get_transaction_from_reg_url_link($this->checkout->reg_url_link);
+		// verify transaction
+		if ($transaction instanceof EE_Transaction) {
+			// and get the cart that was used for that transaction
+			$this->checkout->cart = $this->_get_cart_for_transaction($transaction);
+			return $transaction;
+		}
+		EE_Error::add_error(
+			__('Your Registration and Transaction information could not be retrieved from the db.', 'event_espresso'),
+			__FILE__, __FUNCTION__, __LINE__
+		);
+		return null;
+
+	}
+
+
+
+	/**
+	 * _get_cart_for_transaction
+	 *
+	 * @access private
+	 * @param EE_Transaction $transaction
+	 * @return EE_Cart
+	 */
+	private function _get_cart_for_transaction($transaction)
+	{
+		return $this->checkout->get_cart_for_transaction($transaction);
+	}
+
+
+
+	/**
+	 * get_cart_for_transaction
+	 *
+	 * @access public
+	 * @param EE_Transaction $transaction
+	 * @return EE_Cart
+	 */
+	public function get_cart_for_transaction(EE_Transaction $transaction)
+	{
+		return $this->checkout->get_cart_for_transaction($transaction);
+	}
+
+
+
+	/**
+	 * _get_transaction_and_cart_for_current_session
+	 *    generates a new EE_Transaction object and adds it to the $_transaction property.
+	 *
+	 * @access private
+	 * @return EE_Transaction
+	 * @throws EE_Error
+	 */
+	private function _get_cart_for_current_session_and_setup_new_transaction()
+	{
+		//  if there's no transaction, then this is the FIRST visit to SPCO
+		// so load up the cart ( passing nothing for the TXN because it doesn't exist yet )
+		$this->checkout->cart = $this->_get_cart_for_transaction(null);
+		// and then create a new transaction
+		$transaction = $this->_initialize_transaction();
+		// verify transaction
+		if ($transaction instanceof EE_Transaction) {
+			// save it so that we have an ID for other objects to use
+			$transaction->save();
+			// and save TXN data to the cart
+			$this->checkout->cart->get_grand_total()->save_this_and_descendants_to_txn($transaction->ID());
+		} else {
+			EE_Error::add_error(
+				__('A Valid Transaction could not be initialized.', 'event_espresso'),
+				__FILE__, __FUNCTION__, __LINE__
+			);
+		}
+		return $transaction;
+	}
+
+
+
+	/**
+	 *    generates a new EE_Transaction object and adds it to the $_transaction property.
+	 *
+	 * @access private
+	 * @return mixed EE_Transaction|NULL
+	 */
+	private function _initialize_transaction()
+	{
+		try {
+			// ensure cart totals have been calculated
+			$this->checkout->cart->get_grand_total()->recalculate_total_including_taxes();
+			// grab the cart grand total
+			$cart_total = $this->checkout->cart->get_cart_grand_total();
+			// create new TXN
+			$transaction = EE_Transaction::new_instance(
+				array(
+					'TXN_reg_steps' => $this->checkout->initialize_txn_reg_steps_array(),
+					'TXN_total'     => $cart_total > 0 ? $cart_total : 0,
+					'TXN_paid'      => 0,
+					'STS_ID'        => EEM_Transaction::failed_status_code,
+				)
+			);
+			// save it so that we have an ID for other objects to use
+			$transaction->save();
+			// set cron job for following up on TXNs after their session has expired
+			EE_Cron_Tasks::schedule_expired_transaction_check(
+				EE_Registry::instance()->SSN->expiration() + 1,
+				$transaction->ID()
+			);
+			return $transaction;
+		} catch (Exception $e) {
+			EE_Error::add_error($e->getMessage(), __FILE__, __FUNCTION__, __LINE__);
+		}
+		return null;
+	}
+
+
+	/**
+	 * _get_registrations
+	 *
+	 * @access private
+	 * @param EE_Transaction $transaction
+	 * @return void
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidEntityException
+	 * @throws EE_Error
+	 */
+	private function _get_registrations(EE_Transaction $transaction)
+	{
+		// first step: grab the registrants  { : o
+		$registrations = $transaction->registrations($this->checkout->reg_cache_where_params, true);
+		// verify registrations have been set
+		if (empty($registrations)) {
+			// if no cached registrations, then check the db
+			$registrations = $transaction->registrations($this->checkout->reg_cache_where_params, false);
+			// still nothing ? well as long as this isn't a revisit
+			if (empty($registrations) && ! $this->checkout->revisit) {
+				// generate new registrations from scratch
+				$registrations = $this->_initialize_registrations($transaction);
+			}
+		}
+		// sort by their original registration order
+		usort($registrations, array('EED_Single_Page_Checkout', 'sort_registrations_by_REG_count'));
+		// then loop thru the array
+		foreach ($registrations as $registration) {
+			// verify each registration
+			if ($registration instanceof EE_Registration) {
+				// we display all attendee info for the primary registrant
+				if ($this->checkout->reg_url_link === $registration->reg_url_link()
+					&& $registration->is_primary_registrant()
+				) {
+					$this->checkout->primary_revisit = true;
+					break;
+				}
+				if ($this->checkout->revisit
+						   && $this->checkout->reg_url_link !== $registration->reg_url_link()
+				) {
+					// but hide info if it doesn't belong to you
+					$transaction->clear_cache('Registration', $registration->ID());
+				}
+				$this->checkout->set_reg_status_updated($registration->ID(), false);
+			}
+		}
+	}
+
+
+	/**
+	 *    adds related EE_Registration objects for each ticket in the cart to the current EE_Transaction object
+	 *
+	 * @access private
+	 * @param EE_Transaction $transaction
+	 * @return    array
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidEntityException
+	 * @throws EE_Error
+	 */
+	private function _initialize_registrations(EE_Transaction $transaction)
+	{
+		$att_nmbr = 0;
+		$registrations = array();
+		if ($transaction instanceof EE_Transaction) {
+			/** @type EE_Registration_Processor $registration_processor */
+			$registration_processor = EE_Registry::instance()->load_class('Registration_Processor');
+			$this->checkout->total_ticket_count = $this->checkout->cart->all_ticket_quantity_count();
+			// now let's add the cart items to the $transaction
+			foreach ($this->checkout->cart->get_tickets() as $line_item) {
+				//do the following for each ticket of this type they selected
+				for ($x = 1; $x <= $line_item->quantity(); $x++) {
+					$att_nmbr++;
+					/** @var EventEspresso\core\services\commands\registration\CreateRegistrationCommand $CreateRegistrationCommand */
+					$CreateRegistrationCommand = EE_Registry::instance()->create(
+						'EventEspresso\core\services\commands\registration\CreateRegistrationCommand',
+						array(
+							$transaction,
+							$line_item,
+							$att_nmbr,
+							$this->checkout->total_ticket_count,
+						)
+					);
+					// override capabilities for frontend registrations
+					if ( ! is_admin()) {
+						$CreateRegistrationCommand->setCapCheck(
+							new PublicCapabilities('', 'create_new_registration')
+						);
+					}
+					$registration = EE_Registry::instance()->BUS->execute($CreateRegistrationCommand);
+					if ( ! $registration instanceof EE_Registration) {
+						throw new InvalidEntityException($registration, 'EE_Registration');
+					}
+					$registrations[ $registration->ID() ] = $registration;
+				}
+			}
+			$registration_processor->fix_reg_final_price_rounding_issue($transaction);
+		}
+		return $registrations;
+	}
+
+
+
+	/**
+	 * sorts registrations by REG_count
+	 *
+	 * @access public
+	 * @param EE_Registration $reg_A
+	 * @param EE_Registration $reg_B
+	 * @return int
+	 */
+	public static function sort_registrations_by_REG_count(EE_Registration $reg_A, EE_Registration $reg_B)
+	{
+		// this shouldn't ever happen within the same TXN, but oh well
+		if ($reg_A->count() === $reg_B->count()) {
+			return 0;
+		}
+		return ($reg_A->count() > $reg_B->count()) ? 1 : -1;
+	}
+
+
+
+	/**
+	 *    _final_verifications
+	 * just makes sure that everything is set up correctly before proceeding
+	 *
+	 * @access    private
+	 * @return    bool
+	 * @throws EE_Error
+	 */
+	private function _final_verifications()
+	{
+		// filter checkout
+		$this->checkout = apply_filters(
+			'FHEE__EED_Single_Page_Checkout___final_verifications__checkout',
+			$this->checkout
+		);
+		//verify that current step is still set correctly
+		if ( ! $this->checkout->current_step instanceof EE_SPCO_Reg_Step) {
+			EE_Error::add_error(
+				__('We\'re sorry but the registration process can not proceed because one or more registration steps were not setup correctly. Please refresh the page and try again or contact support.', 'event_espresso'),
+				__FILE__,
+				__FUNCTION__,
+				__LINE__
+			);
+			return false;
+		}
+		// if returning to SPCO, then verify that primary registrant is set
+		if ( ! empty($this->checkout->reg_url_link)) {
+			$valid_registrant = $this->checkout->transaction->primary_registration();
+			if ( ! $valid_registrant instanceof EE_Registration) {
+				EE_Error::add_error(
+					__('We\'re sorry but there appears to be an error with the "reg_url_link" or the primary registrant for this transaction. Please refresh the page and try again or contact support.', 'event_espresso'),
+					__FILE__,
+					__FUNCTION__,
+					__LINE__
+				);
+				return false;
+			}
+			$valid_registrant = null;
+			foreach (
+				$this->checkout->transaction->registrations($this->checkout->reg_cache_where_params) as $registration
+			) {
+				if (
+					$registration instanceof EE_Registration
+					&& $registration->reg_url_link() === $this->checkout->reg_url_link
+				) {
+					$valid_registrant = $registration;
+				}
+			}
+			if ( ! $valid_registrant instanceof EE_Registration) {
+				// hmmm... maybe we have the wrong session because the user is opening multiple tabs ?
+				if (EED_Single_Page_Checkout::$_checkout_verified) {
+					// clear the session, mark the checkout as unverified, and try again
+					EE_Registry::instance()->SSN->clear_session(__CLASS__, __FUNCTION__);
+					EED_Single_Page_Checkout::$_initialized = false;
+					EED_Single_Page_Checkout::$_checkout_verified = false;
+					$this->_initialize();
+					EE_Error::reset_notices();
+					return false;
+				}
+				EE_Error::add_error(
+					__(
+						'We\'re sorry but there appears to be an error with the "reg_url_link" or the transaction itself. Please refresh the page and try again or contact support.',
+						'event_espresso'
+					),
+					__FILE__,
+					__FUNCTION__,
+					__LINE__
+				);
+				return false;
+			}
+		}
+		// now that things have been kinda sufficiently verified,
+		// let's add the checkout to the session so that it's available to other systems
+		EE_Registry::instance()->SSN->set_checkout($this->checkout);
+		return true;
+	}
+
+
+
+	/**
+	 *    _initialize_reg_steps
+	 * first makes sure that EE_Transaction_Processor::set_reg_step_initiated() is called as required
+	 * then loops thru all of the active reg steps and calls the initialize_reg_step() method
+	 *
+	 * @access    private
+	 * @param bool $reinitializing
+	 * @throws EE_Error
+	 */
+	private function _initialize_reg_steps($reinitializing = false)
+	{
+		$this->checkout->set_reg_step_initiated($this->checkout->current_step);
+		// loop thru all steps to call their individual "initialize" methods and set i18n strings for JS
+		foreach ($this->checkout->reg_steps as $reg_step) {
+			if ( ! $reg_step->initialize_reg_step()) {
+				// if not initialized then maybe this step is being removed...
+				if ( ! $reinitializing && $reg_step->is_current_step()) {
+					// if it was the current step, then we need to start over here
+					$this->_initialize_reg_steps(true);
+					return;
+				}
+				continue;
+			}
+			// add css and JS for current step
+			$reg_step->enqueue_styles_and_scripts();
+			// i18n
+			$reg_step->translate_js_strings();
+			if ($reg_step->is_current_step()) {
+				// the text that appears on the reg step form submit button
+				$reg_step->set_submit_button_text();
+			}
+		}
+		// dynamically creates hook point like: AHEE__Single_Page_Checkout___initialize_reg_step__attendee_information
+		do_action(
+			"AHEE__Single_Page_Checkout___initialize_reg_step__{$this->checkout->current_step->slug()}",
+			$this->checkout->current_step
+		);
+	}
+
+
+
+	/**
+	 * _check_form_submission
+	 *
+	 * @access private
+	 * @return boolean
+	 */
+	private function _check_form_submission()
+	{
+		//does this request require the reg form to be generated ?
+		if ($this->checkout->generate_reg_form) {
+			// ever heard that song by Blue Rodeo ?
+			try {
+				$this->checkout->current_step->reg_form = $this->checkout->current_step->generate_reg_form();
+				// if not displaying a form, then check for form submission
+				if (
+					$this->checkout->process_form_submission
+					&& $this->checkout->current_step->reg_form->was_submitted()
+				) {
+					// clear out any old data in case this step is being run again
+					$this->checkout->current_step->set_valid_data(array());
+					// capture submitted form data
+					$this->checkout->current_step->reg_form->receive_form_submission(
+						apply_filters(
+							'FHEE__Single_Page_Checkout___check_form_submission__request_params',
+							EE_Registry::instance()->REQ->params(),
+							$this->checkout
+						)
+					);
+					// validate submitted form data
+					if ( ! $this->checkout->continue_reg || ! $this->checkout->current_step->reg_form->is_valid()) {
+						// thou shall not pass !!!
+						$this->checkout->continue_reg = false;
+						// any form validation errors?
+						if ($this->checkout->current_step->reg_form->submission_error_message() !== '') {
+							$submission_error_messages = array();
+							// bad, bad, bad registrant
+							foreach (
+								$this->checkout->current_step->reg_form->get_validation_errors_accumulated()
+								as $validation_error
+							) {
+								if ($validation_error instanceof EE_Validation_Error) {
+									$submission_error_messages[] = sprintf(
+										__('%s : %s', 'event_espresso'),
+										$validation_error->get_form_section()->html_label_text(),
+										$validation_error->getMessage()
+									);
+								}
+							}
+							EE_Error::add_error(
+								implode('<br />', $submission_error_messages),
+								__FILE__, __FUNCTION__, __LINE__
+							);
+						}
+						// well not really... what will happen is
+						// we'll just get redirected back to redo the current step
+						$this->go_to_next_step();
+						return false;
+					}
+				}
+			} catch (EE_Error $e) {
+				$e->get_error();
+			}
+		}
+		return true;
+	}
+
+
+
+	/**
+	 * _process_action
+	 *
+	 * @access private
+	 * @return void
+	 * @throws EE_Error
+	 */
+	private function _process_form_action()
+	{
+		// what cha wanna do?
+		switch ($this->checkout->action) {
+			// AJAX next step reg form
+			case 'display_spco_reg_step' :
+				$this->checkout->redirect = false;
+				if (EE_Registry::instance()->REQ->ajax) {
+					$this->checkout->json_response->set_reg_step_html(
+						$this->checkout->current_step->display_reg_form()
+					);
+				}
+				break;
+			default :
+				// meh... do one of those other steps first
+				if (
+					! empty($this->checkout->action)
+					&& is_callable(array($this->checkout->current_step, $this->checkout->action))
+				) {
+					// dynamically creates hook point like:
+					//   AHEE__Single_Page_Checkout__before_attendee_information__process_reg_step
+					do_action(
+						"AHEE__Single_Page_Checkout__before_{$this->checkout->current_step->slug()}__{$this->checkout->action}",
+						$this->checkout->current_step
+					);
+					// call action on current step
+					if (call_user_func(array($this->checkout->current_step, $this->checkout->action))) {
+						// good registrant, you get to proceed
+						if (
+							$this->checkout->current_step->success_message() !== ''
+							&& apply_filters(
+								'FHEE__Single_Page_Checkout___process_form_action__display_success',
+								false
+							)
+						) {
+							EE_Error::add_success(
+								$this->checkout->current_step->success_message()
+								. '<br />' . $this->checkout->next_step->_instructions()
+							);
+						}
+						// pack it up, pack it in...
+						$this->_setup_redirect();
+					}
+					// dynamically creates hook point like:
+					//  AHEE__Single_Page_Checkout__after_payment_options__process_reg_step
+					do_action(
+						"AHEE__Single_Page_Checkout__after_{$this->checkout->current_step->slug()}__{$this->checkout->action}",
+						$this->checkout->current_step
+					);
+				} else {
+					EE_Error::add_error(
+						sprintf(
+							__(
+								'The requested form action "%s" does not exist for the current "%s" registration step.',
+								'event_espresso'
+							),
+							$this->checkout->action,
+							$this->checkout->current_step->name()
+						),
+						__FILE__,
+						__FUNCTION__,
+						__LINE__
+					);
+				}
+			// end default
+		}
+		// store our progress so far
+		$this->checkout->stash_transaction_and_checkout();
+		// advance to the next step! If you pass GO, collect $200
+		$this->go_to_next_step();
+	}
+
+
+
+	/**
+	 *        add_styles_and_scripts
+	 *
+	 * @access        public
+	 * @return        void
+	 */
+	public function add_styles_and_scripts()
+	{
+		// i18n
+		$this->translate_js_strings();
+		if ($this->checkout->admin_request) {
+			add_action('admin_enqueue_scripts', array($this, 'enqueue_styles_and_scripts'), 10);
+		} else {
+			add_action('wp_enqueue_scripts', array($this, 'enqueue_styles_and_scripts'), 10);
+		}
+	}
+
+
+
+	/**
+	 *        translate_js_strings
+	 *
+	 * @access        public
+	 * @return        void
+	 */
+	public function translate_js_strings()
+	{
+		EE_Registry::$i18n_js_strings['revisit'] = $this->checkout->revisit;
+		EE_Registry::$i18n_js_strings['e_reg_url_link'] = $this->checkout->reg_url_link;
+		EE_Registry::$i18n_js_strings['server_error'] = __(
+			'An unknown error occurred on the server while attempting to process your request. Please refresh the page and try again or contact support.',
+			'event_espresso'
+		);
+		EE_Registry::$i18n_js_strings['invalid_json_response'] = __(
+			'An invalid response was returned from the server while attempting to process your request. Please refresh the page and try again or contact support.',
+			'event_espresso'
+		);
+		EE_Registry::$i18n_js_strings['validation_error'] = __(
+			'There appears to be a problem with the form validation configuration! Please check the admin settings or contact support.',
+			'event_espresso'
+		);
+		EE_Registry::$i18n_js_strings['invalid_payment_method'] = __(
+			'There appears to be a problem with the payment method configuration! Please refresh the page and try again or contact support.',
+			'event_espresso'
+		);
+		EE_Registry::$i18n_js_strings['reg_step_error'] = __(
+			'This registration step could not be completed. Please refresh the page and try again.',
+			'event_espresso'
+		);
+		EE_Registry::$i18n_js_strings['invalid_coupon'] = __(
+			'We\'re sorry but that coupon code does not appear to be valid. If this is incorrect, please contact the site administrator.',
+			'event_espresso'
+		);
+		EE_Registry::$i18n_js_strings['process_registration'] = sprintf(
+			__(
+				'Please wait while we process your registration.%sDo not refresh the page or navigate away while this is happening.%sThank you for your patience.',
+				'event_espresso'
+			),
+			'<br/>',
+			'<br/>'
+		);
+		EE_Registry::$i18n_js_strings['language'] = get_bloginfo('language');
+		EE_Registry::$i18n_js_strings['EESID'] = EE_Registry::instance()->SSN->id();
+		EE_Registry::$i18n_js_strings['currency'] = EE_Registry::instance()->CFG->currency;
+		EE_Registry::$i18n_js_strings['datepicker_yearRange'] = '-150:+20';
+		EE_Registry::$i18n_js_strings['timer_years'] = __('years', 'event_espresso');
+		EE_Registry::$i18n_js_strings['timer_months'] = __('months', 'event_espresso');
+		EE_Registry::$i18n_js_strings['timer_weeks'] = __('weeks', 'event_espresso');
+		EE_Registry::$i18n_js_strings['timer_days'] = __('days', 'event_espresso');
+		EE_Registry::$i18n_js_strings['timer_hours'] = __('hours', 'event_espresso');
+		EE_Registry::$i18n_js_strings['timer_minutes'] = __('minutes', 'event_espresso');
+		EE_Registry::$i18n_js_strings['timer_seconds'] = __('seconds', 'event_espresso');
+		EE_Registry::$i18n_js_strings['timer_year'] = __('year', 'event_espresso');
+		EE_Registry::$i18n_js_strings['timer_month'] = __('month', 'event_espresso');
+		EE_Registry::$i18n_js_strings['timer_week'] = __('week', 'event_espresso');
+		EE_Registry::$i18n_js_strings['timer_day'] = __('day', 'event_espresso');
+		EE_Registry::$i18n_js_strings['timer_hour'] = __('hour', 'event_espresso');
+		EE_Registry::$i18n_js_strings['timer_minute'] = __('minute', 'event_espresso');
+		EE_Registry::$i18n_js_strings['timer_second'] = __('second', 'event_espresso');
+		EE_Registry::$i18n_js_strings['registration_expiration_notice'] = sprintf(
+			__(
+				'%1$sWe\'re sorry, but your registration time has expired.%2$s%3$s%4$sIf you still wish to complete your registration, please return to the %5$sEvent List%6$sEvent List%7$s and reselect your tickets if available. Please except our apologies for any inconvenience this may have caused.%8$s',
+				'event_espresso'
+			),
+			'<h4 class="important-notice">',
+			'</h4>',
+			'<br />',
+			'<p>',
+			'<a href="' . get_post_type_archive_link('espresso_events') . '" title="',
+			'">',
+			'</a>',
+			'</p>'
+		);
+		EE_Registry::$i18n_js_strings['ajax_submit'] = apply_filters(
+			'FHEE__Single_Page_Checkout__translate_js_strings__ajax_submit',
+			true
+		);
+		EE_Registry::$i18n_js_strings['session_extension'] = absint(
+			apply_filters('FHEE__EE_Session__extend_expiration__seconds_added', 10 * MINUTE_IN_SECONDS)
+		);
+		EE_Registry::$i18n_js_strings['session_expiration'] = gmdate(
+			'M d, Y H:i:s',
+			EE_Registry::instance()->SSN->expiration() + (get_option('gmt_offset') * HOUR_IN_SECONDS)
+		);
+	}
+
+
+
+	/**
+	 *    enqueue_styles_and_scripts
+	 *
+	 * @access        public
+	 * @return        void
+	 * @throws EE_Error
+	 */
+	public function enqueue_styles_and_scripts()
+	{
+		// load css
+		wp_register_style(
+			'single_page_checkout',
+			SPCO_CSS_URL . 'single_page_checkout.css',
+			array('espresso_default'),
+			EVENT_ESPRESSO_VERSION
+		);
+		wp_enqueue_style('single_page_checkout');
+		// load JS
+		wp_register_script(
+			'jquery_plugin',
+			EE_THIRD_PARTY_URL . 'jquery	.plugin.min.js',
+			array('jquery'),
+			'1.0.1',
+			true
+		);
+		wp_register_script(
+			'jquery_countdown',
+			EE_THIRD_PARTY_URL . 'jquery	.countdown.min.js',
+			array('jquery_plugin'),
+			'2.0.2',
+			true
+		);
+		wp_register_script(
+			'single_page_checkout',
+			SPCO_JS_URL . 'single_page_checkout.js',
+			array('espresso_core', 'underscore', 'ee_form_section_validation', 'jquery_countdown'),
+			EVENT_ESPRESSO_VERSION,
+			true
+		);
+		if ($this->checkout->registration_form instanceof EE_Form_Section_Proper) {
+			$this->checkout->registration_form->enqueue_js();
+		}
+		if ($this->checkout->current_step->reg_form instanceof EE_Form_Section_Proper) {
+			$this->checkout->current_step->reg_form->enqueue_js();
+		}
+		wp_enqueue_script('single_page_checkout');
+		/**
+		 * global action hook for enqueueing styles and scripts with
+		 * spco calls.
+		 */
+		do_action('AHEE__EED_Single_Page_Checkout__enqueue_styles_and_scripts', $this);
+		/**
+		 * dynamic action hook for enqueueing styles and scripts with spco calls.
+		 * The hook will end up being something like:
+		 *      AHEE__EED_Single_Page_Checkout__enqueue_styles_and_scripts__attendee_information
+		 */
+		do_action(
+			'AHEE__EED_Single_Page_Checkout__enqueue_styles_and_scripts__' . $this->checkout->current_step->slug(),
+			$this
+		);
+	}
+
+
+
+	/**
+	 *    display the Registration Single Page Checkout Form
+	 *
+	 * @access    private
+	 * @return    void
+	 * @throws EE_Error
+	 */
+	private function _display_spco_reg_form()
+	{
+		// if registering via the admin, just display the reg form for the current step
+		if ($this->checkout->admin_request) {
+			EE_Registry::instance()->REQ->add_output($this->checkout->current_step->display_reg_form());
+		} else {
+			// add powered by EE msg
+			add_action('AHEE__SPCO__reg_form_footer', array('EED_Single_Page_Checkout', 'display_registration_footer'));
+			$empty_cart = count(
+				$this->checkout->transaction->registrations($this->checkout->reg_cache_where_params)
+			) < 1;
+			EE_Registry::$i18n_js_strings['empty_cart'] = $empty_cart;
+			$cookies_not_set_msg = '';
+			if ($empty_cart && ! isset($_COOKIE['ee_cookie_test'])) {
+				$cookies_not_set_msg = apply_filters(
+					'FHEE__Single_Page_Checkout__display_spco_reg_form__cookies_not_set_msg',
+					sprintf(
+						__(
+							'%1$s%3$sIt appears your browser is not currently set to accept Cookies%4$s%5$sIn order to register for events, you need to enable cookies.%7$sIf you require assistance, then click the following link to learn how to %8$senable cookies%9$s%6$s%2$s',
+							'event_espresso'
+						),
+						'<div class="ee-attention">',
+						'</div>',
+						'<h6 class="important-notice">',
+						'</h6>',
+						'<p>',
+						'</p>',
+						'<br />',
+						'<a href="http://www.whatarecookies.com/enable.asp" target="_blank">',
+						'</a>'
+					)
+				);
+			}
+			$this->checkout->registration_form = new EE_Form_Section_Proper(
+				array(
+					'name'            => 'single-page-checkout',
+					'html_id'         => 'ee-single-page-checkout-dv',
+					'layout_strategy' =>
+						new EE_Template_Layout(
+							array(
+								'layout_template_file' => SPCO_TEMPLATES_PATH . 'registration_page_wrapper.template.php',
+								'template_args'        => array(
+									'empty_cart'              => $empty_cart,
+									'revisit'                 => $this->checkout->revisit,
+									'reg_steps'               => $this->checkout->reg_steps,
+									'next_step'               => $this->checkout->next_step instanceof EE_SPCO_Reg_Step
+										? $this->checkout->next_step->slug()
+										: '',
+									'cancel_page_url'         => $this->checkout->cancel_page_url,
+									'empty_msg'               => apply_filters(
+										'FHEE__Single_Page_Checkout__display_spco_reg_form__empty_msg',
+										sprintf(
+											__(
+												'You need to %1$sReturn to Events list%2$sselect at least one event%3$s before you can proceed with the registration process.',
+												'event_espresso'
+											),
+											'<a href="'
+											. get_post_type_archive_link('espresso_events')
+											. '" title="',
+											'">',
+											'</a>'
+										)
+									),
+									'cookies_not_set_msg'     => $cookies_not_set_msg,
+									'registration_time_limit' => $this->checkout->get_registration_time_limit(),
+									'session_expiration'      => gmdate(
+										'M d, Y H:i:s',
+										EE_Registry::instance()->SSN->expiration()
+										+ (get_option('gmt_offset') * HOUR_IN_SECONDS)
+									),
+								),
+							)
+						),
+				)
+			);
+			// load template and add to output sent that gets filtered into the_content()
+			EE_Registry::instance()->REQ->add_output($this->checkout->registration_form->get_html());
+		}
+	}
+
+
+
+	/**
+	 *    add_extra_finalize_registration_inputs
+	 *
+	 * @access    public
+	 * @param $next_step
+	 * @internal  param string $label
+	 * @return void
+	 */
+	public function add_extra_finalize_registration_inputs($next_step)
+	{
+		if ($next_step === 'finalize_registration') {
+			echo '<div id="spco-extra-finalize_registration-inputs-dv"></div>';
+		}
+	}
+
+
+
+	/**
+	 *    display_registration_footer
+	 *
+	 * @access    public
+	 * @return    string
+	 */
+	public static function display_registration_footer()
+	{
+		if (
+		apply_filters(
+			'FHEE__EE_Front__Controller__show_reg_footer',
+			EE_Registry::instance()->CFG->admin->show_reg_footer
+		)
+		) {
+			add_filter(
+				'FHEE__EEH_Template__powered_by_event_espresso__url',
+				function ($url) {
+					return apply_filters('FHEE__EE_Front_Controller__registration_footer__url', $url);
+				}
+			);
+			echo apply_filters(
+				'FHEE__EE_Front_Controller__display_registration_footer',
+				\EEH_Template::powered_by_event_espresso(
+					'',
+					'espresso-registration-footer-dv',
+					array('utm_content' => 'registration_checkout')
+				)
+			);
+		}
+		return '';
+	}
+
+
+
+	/**
+	 *    unlock_transaction
+	 *
+	 * @access    public
+	 * @return    void
+	 * @throws EE_Error
+	 */
+	public function unlock_transaction()
+	{
+		if ($this->checkout->transaction instanceof EE_Transaction) {
+			$this->checkout->transaction->unlock();
+		}
+	}
+
+
+
+	/**
+	 *        _setup_redirect
+	 *
+	 * @access    private
+	 * @return void
+	 */
+	private function _setup_redirect()
+	{
+		if ($this->checkout->continue_reg && $this->checkout->next_step instanceof EE_SPCO_Reg_Step) {
+			$this->checkout->redirect = true;
+			if (empty($this->checkout->redirect_url)) {
+				$this->checkout->redirect_url = $this->checkout->next_step->reg_step_url();
+			}
+			$this->checkout->redirect_url = apply_filters(
+				'FHEE__EED_Single_Page_Checkout___setup_redirect__checkout_redirect_url',
+				$this->checkout->redirect_url,
+				$this->checkout
+			);
+		}
+	}
+
+
+
+	/**
+	 *   handle ajax message responses and redirects
+	 *
+	 * @access public
+	 * @return void
+	 * @throws EE_Error
+	 */
+	public function go_to_next_step()
+	{
+		if (EE_Registry::instance()->REQ->ajax) {
+			// capture contents of output buffer we started earlier in the request, and insert into JSON response
+			$this->checkout->json_response->set_unexpected_errors(ob_get_clean());
+		}
+		$this->unlock_transaction();
+		// just return for these conditions
+		if (
+			$this->checkout->admin_request
+			|| $this->checkout->action === 'redirect_form'
+			|| $this->checkout->action === 'update_checkout'
+		) {
+			return;
+		}
+		// AJAX response
+		$this->_handle_json_response();
+		// redirect to next step or the Thank You page
+		$this->_handle_html_redirects();
+		// hmmm... must be something wrong, so let's just display the form again !
+		$this->_display_spco_reg_form();
+	}
+
+
+
+	/**
+	 *   _handle_json_response
+	 *
+	 * @access protected
+	 * @return void
+	 */
+	protected function _handle_json_response()
+	{
+		// if this is an ajax request
+		if (EE_Registry::instance()->REQ->ajax) {
+			// DEBUG LOG
+			//$this->checkout->log(
+			//	__CLASS__, __FUNCTION__, __LINE__,
+			//	array(
+			//		'json_response_redirect_url' => $this->checkout->json_response->redirect_url(),
+			//		'redirect'                   => $this->checkout->redirect,
+			//		'continue_reg'               => $this->checkout->continue_reg,
+			//	)
+			//);
+			$this->checkout->json_response->set_registration_time_limit(
+				$this->checkout->get_registration_time_limit()
+			);
+			$this->checkout->json_response->set_payment_amount($this->checkout->amount_owing);
+			// just send the ajax (
+			$json_response = apply_filters(
+				'FHEE__EE_Single_Page_Checkout__JSON_response',
+				$this->checkout->json_response
+			);
+			echo $json_response;
+			exit();
+		}
+	}
+
+
+
+	/**
+	 *   _handle_redirects
+	 *
+	 * @access protected
+	 * @return void
+	 */
+	protected function _handle_html_redirects()
+	{
+		// going somewhere ?
+		if ($this->checkout->redirect && ! empty($this->checkout->redirect_url)) {
+			// store notices in a transient
+			EE_Error::get_notices(false, true, true);
+			// DEBUG LOG
+			//$this->checkout->log(
+			//	__CLASS__, __FUNCTION__, __LINE__,
+			//	array(
+			//		'headers_sent' => headers_sent(),
+			//		'redirect_url'     => $this->checkout->redirect_url,
+			//		'headers_list'    => headers_list(),
+			//	)
+			//);
+			wp_safe_redirect($this->checkout->redirect_url);
+			exit();
+		}
+	}
+
+
+
+	/**
+	 *   set_checkout_anchor
+	 *
+	 * @access public
+	 * @return void
+	 */
+	public function set_checkout_anchor()
+	{
+		echo '<a id="checkout" style="float: left; margin-left: -999em;"></a>';
+	}
 
 
 

Spacing +27 added lines, -27 removed lines

@@ -218,19 +218,19 @@ 
      */
     public static function set_definitions()
     {
-        if(defined('SPCO_BASE_PATH')) {
+        if (defined('SPCO_BASE_PATH')) {
             return;
         }
         define(
             'SPCO_BASE_PATH',
-            rtrim(str_replace(array('\\', '/'), DS, plugin_dir_path(__FILE__)), DS) . DS
+            rtrim(str_replace(array('\\', '/'), DS, plugin_dir_path(__FILE__)), DS).DS
         );
-        define('SPCO_CSS_URL', plugin_dir_url(__FILE__) . 'css' . DS);
-        define('SPCO_IMG_URL', plugin_dir_url(__FILE__) . 'img' . DS);
-        define('SPCO_JS_URL', plugin_dir_url(__FILE__) . 'js' . DS);
-        define('SPCO_INC_PATH', SPCO_BASE_PATH . 'inc' . DS);
-        define('SPCO_REG_STEPS_PATH', SPCO_BASE_PATH . 'reg_steps' . DS);
-        define('SPCO_TEMPLATES_PATH', SPCO_BASE_PATH . 'templates' . DS);
+        define('SPCO_CSS_URL', plugin_dir_url(__FILE__).'css'.DS);
+        define('SPCO_IMG_URL', plugin_dir_url(__FILE__).'img'.DS);
+        define('SPCO_JS_URL', plugin_dir_url(__FILE__).'js'.DS);
+        define('SPCO_INC_PATH', SPCO_BASE_PATH.'inc'.DS);
+        define('SPCO_REG_STEPS_PATH', SPCO_BASE_PATH.'reg_steps'.DS);
+        define('SPCO_TEMPLATES_PATH', SPCO_BASE_PATH.'templates'.DS);
         EEH_Autoloader::register_autoloaders_for_each_file_in_folder(SPCO_BASE_PATH, true);
         EE_Registry::$i18n_js_strings['registration_expiration_notice'] = sprintf(
             __('%1$sWe\'re sorry, but you\'re registration time has expired.%2$s%4$sIf you still wish to complete your registration, please return to the %5$sEvent List%6$sEvent List%7$s and reselect your tickets if available. Please except our apologies for any inconvenience this may have caused.%8$s',
@@ -239,7 +239,7 @@ 
             '</h4>',
             '<br />',
             '<p>',
-            '<a href="' . get_post_type_archive_link('espresso_events') . '" title="',
+            '<a href="'.get_post_type_archive_link('espresso_events').'" title="',
             '">',
             '</a>',
             '</p>'
@@ -262,7 +262,7 @@ 
             return;
         }
         // filter list of reg_steps
-        $reg_steps_to_load = (array)apply_filters(
+        $reg_steps_to_load = (array) apply_filters(
             'AHEE__SPCO__load_reg_steps__reg_steps_to_load',
             EED_Single_Page_Checkout::get_reg_steps()
         );
@@ -314,25 +314,25 @@ 
         if (empty($reg_steps)) {
             $reg_steps = array(
                 10  => array(
-                    'file_path'  => SPCO_REG_STEPS_PATH . 'attendee_information',
+                    'file_path'  => SPCO_REG_STEPS_PATH.'attendee_information',
                     'class_name' => 'EE_SPCO_Reg_Step_Attendee_Information',
                     'slug'       => 'attendee_information',
                     'has_hooks'  => false,
                 ),
                 20  => array(
-                    'file_path'  => SPCO_REG_STEPS_PATH . 'registration_confirmation',
+                    'file_path'  => SPCO_REG_STEPS_PATH.'registration_confirmation',
                     'class_name' => 'EE_SPCO_Reg_Step_Registration_Confirmation',
                     'slug'       => 'registration_confirmation',
                     'has_hooks'  => false,
                 ),
                 30  => array(
-                    'file_path'  => SPCO_REG_STEPS_PATH . 'payment_options',
+                    'file_path'  => SPCO_REG_STEPS_PATH.'payment_options',
                     'class_name' => 'EE_SPCO_Reg_Step_Payment_Options',
                     'slug'       => 'payment_options',
                     'has_hooks'  => true,
                 ),
                 999 => array(
-                    'file_path'  => SPCO_REG_STEPS_PATH . 'finalize_registration',
+                    'file_path'  => SPCO_REG_STEPS_PATH.'finalize_registration',
                     'class_name' => 'EE_SPCO_Reg_Step_Finalize_Registration',
                     'slug'       => 'finalize_registration',
                     'has_hooks'  => false,
@@ -516,7 +516,7 @@ 
             // DEBUG LOG
             //$this->checkout->log( __CLASS__, __FUNCTION__, __LINE__ );
             // get reg form
-            if( ! $this->_check_form_submission()) {
+            if ( ! $this->_check_form_submission()) {
                 EED_Single_Page_Checkout::$_initialized = true;
                 return;
             }
@@ -557,7 +557,7 @@ 
         );
         // is session still valid ?
         if ($clear_session_requested
-            || ( EE_Registry::instance()->SSN->expired()
+            || (EE_Registry::instance()->SSN->expired()
               && EE_Registry::instance()->REQ->get('e_reg_url_link', '') === ''
             )
         ) {
@@ -566,7 +566,7 @@ 
             // EE_Registry::instance()->SSN->reset_cart();
             // EE_Registry::instance()->SSN->reset_checkout();
             // EE_Registry::instance()->SSN->reset_transaction();
-            if (! $clear_session_requested) {
+            if ( ! $clear_session_requested) {
                 EE_Error::add_attention(
                     EE_Registry::$i18n_js_strings['registration_expiration_notice'],
                     __FILE__, __FUNCTION__, __LINE__
@@ -1121,7 +1121,7 @@ 
                     if ( ! $registration instanceof EE_Registration) {
                         throw new InvalidEntityException($registration, 'EE_Registration');
                     }
-                    $registrations[ $registration->ID() ] = $registration;
+                    $registrations[$registration->ID()] = $registration;
                 }
             }
             $registration_processor->fix_reg_final_price_rounding_issue($transaction);
@@ -1382,7 +1382,7 @@ 
                         ) {
                             EE_Error::add_success(
                                 $this->checkout->current_step->success_message()
-                                . '<br />' . $this->checkout->next_step->_instructions()
+                                . '<br />'.$this->checkout->next_step->_instructions()
                             );
                         }
                         // pack it up, pack it in...
@@ -1507,7 +1507,7 @@ 
             '</h4>',
             '<br />',
             '<p>',
-            '<a href="' . get_post_type_archive_link('espresso_events') . '" title="',
+            '<a href="'.get_post_type_archive_link('espresso_events').'" title="',
             '">',
             '</a>',
             '</p>'
@@ -1539,7 +1539,7 @@ 
         // load css
         wp_register_style(
             'single_page_checkout',
-            SPCO_CSS_URL . 'single_page_checkout.css',
+            SPCO_CSS_URL.'single_page_checkout.css',
             array('espresso_default'),
             EVENT_ESPRESSO_VERSION
         );
@@ -1547,21 +1547,21 @@ 
         // load JS
         wp_register_script(
             'jquery_plugin',
-            EE_THIRD_PARTY_URL . 'jquery	.plugin.min.js',
+            EE_THIRD_PARTY_URL.'jquery	.plugin.min.js',
             array('jquery'),
             '1.0.1',
             true
         );
         wp_register_script(
             'jquery_countdown',
-            EE_THIRD_PARTY_URL . 'jquery	.countdown.min.js',
+            EE_THIRD_PARTY_URL.'jquery	.countdown.min.js',
             array('jquery_plugin'),
             '2.0.2',
             true
         );
         wp_register_script(
             'single_page_checkout',
-            SPCO_JS_URL . 'single_page_checkout.js',
+            SPCO_JS_URL.'single_page_checkout.js',
             array('espresso_core', 'underscore', 'ee_form_section_validation', 'jquery_countdown'),
             EVENT_ESPRESSO_VERSION,
             true
@@ -1584,7 +1584,7 @@ 
          *      AHEE__EED_Single_Page_Checkout__enqueue_styles_and_scripts__attendee_information
          */
         do_action(
-            'AHEE__EED_Single_Page_Checkout__enqueue_styles_and_scripts__' . $this->checkout->current_step->slug(),
+            'AHEE__EED_Single_Page_Checkout__enqueue_styles_and_scripts__'.$this->checkout->current_step->slug(),
             $this
         );
     }
@@ -1638,7 +1638,7 @@ 
                     'layout_strategy' =>
                         new EE_Template_Layout(
                             array(
-                                'layout_template_file' => SPCO_TEMPLATES_PATH . 'registration_page_wrapper.template.php',
+                                'layout_template_file' => SPCO_TEMPLATES_PATH.'registration_page_wrapper.template.php',
                                 'template_args'        => array(
                                     'empty_cart'              => $empty_cart,
                                     'revisit'                 => $this->checkout->revisit,
@@ -1713,7 +1713,7 @@ 
         ) {
             add_filter(
                 'FHEE__EEH_Template__powered_by_event_espresso__url',
-                function ($url) {
+                function($url) {
                     return apply_filters('FHEE__EE_Front_Controller__registration_footer__url', $url);
                 }
             );

admin_pages/transactions/Transactions_Admin_Page.core.php

Indentation +1967 added lines, -1967 removed lines

@@ -1,5 +1,5 @@ 
 <?php if ( ! defined('EVENT_ESPRESSO_VERSION')) {
-    exit('No direct script access allowed');
+	exit('No direct script access allowed');
 }
 
 /**
@@ -27,1975 +27,1975 @@ 
 class Transactions_Admin_Page extends EE_Admin_Page
 {
 
-    /**
-     * @var EE_Transaction
-     */
-    private $_transaction;
-
-    /**
-     * @var EE_Session
-     */
-    private $_session;
-
-    /**
-     * @var array $_txn_status
-     */
-    private static $_txn_status;
-
-    /**
-     * @var array $_pay_status
-     */
-    private static $_pay_status;
-
-    /**
-     * @var array $_existing_reg_payment_REG_IDs
-     */
-    protected $_existing_reg_payment_REG_IDs = null;
-
-
-    /**
-     * @Constructor
-     * @access public
-     *
-     * @param bool $routing
-     *
-     * @return Transactions_Admin_Page
-     */
-    public function __construct($routing = true)
-    {
-        parent::__construct($routing);
-    }
-
-
-    /**
-     *    _init_page_props
-     * @return void
-     */
-    protected function _init_page_props()
-    {
-        $this->page_slug        = TXN_PG_SLUG;
-        $this->page_label       = esc_html__('Transactions', 'event_espresso');
-        $this->_admin_base_url  = TXN_ADMIN_URL;
-        $this->_admin_base_path = TXN_ADMIN;
-    }
-
-
-    /**
-     *    _ajax_hooks
-     * @return void
-     */
-    protected function _ajax_hooks()
-    {
-        add_action('wp_ajax_espresso_apply_payment', array($this, 'apply_payments_or_refunds'));
-        add_action('wp_ajax_espresso_apply_refund', array($this, 'apply_payments_or_refunds'));
-        add_action('wp_ajax_espresso_delete_payment', array($this, 'delete_payment'));
-    }
-
-
-    /**
-     *    _define_page_props
-     * @return void
-     */
-    protected function _define_page_props()
-    {
-        $this->_admin_page_title = $this->page_label;
-        $this->_labels           = array(
-            'buttons' => array(
-                'add'    => esc_html__('Add New Transaction', 'event_espresso'),
-                'edit'   => esc_html__('Edit Transaction', 'event_espresso'),
-                'delete' => esc_html__('Delete Transaction', 'event_espresso'),
-            )
-        );
-    }
-
-
-    /**
-     *        grab url requests and route them
-     * @access private
-     * @return void
-     */
-    public function _set_page_routes()
-    {
-
-        $this->_set_transaction_status_array();
-
-        $txn_id = ! empty($this->_req_data['TXN_ID']) && ! is_array($this->_req_data['TXN_ID']) ? $this->_req_data['TXN_ID'] : 0;
-
-        $this->_page_routes = array(
-
-            'default' => array(
-                'func'       => '_transactions_overview_list_table',
-                'capability' => 'ee_read_transactions'
-            ),
-
-            'view_transaction' => array(
-                'func'       => '_transaction_details',
-                'capability' => 'ee_read_transaction',
-                'obj_id'     => $txn_id
-            ),
-
-            'send_payment_reminder' => array(
-                'func'       => '_send_payment_reminder',
-                'noheader'   => true,
-                'capability' => 'ee_send_message'
-            ),
-
-            'espresso_apply_payment' => array(
-                'func'       => 'apply_payments_or_refunds',
-                'noheader'   => true,
-                'capability' => 'ee_edit_payments'
-            ),
-
-            'espresso_apply_refund' => array(
-                'func'       => 'apply_payments_or_refunds',
-                'noheader'   => true,
-                'capability' => 'ee_edit_payments'
-            ),
-
-            'espresso_delete_payment' => array(
-                'func'       => 'delete_payment',
-                'noheader'   => true,
-                'capability' => 'ee_delete_payments'
-            ),
-
-        );
-
-    }
-
-
-    protected function _set_page_config()
-    {
-        $this->_page_config = array(
-            'default'          => array(
-                'nav'           => array(
-                    'label' => esc_html__('Overview', 'event_espresso'),
-                    'order' => 10
-                ),
-                'list_table'    => 'EE_Admin_Transactions_List_Table',
-                'help_tabs'     => array(
-                    'transactions_overview_help_tab'                       => array(
-                        'title'    => esc_html__('Transactions Overview', 'event_espresso'),
-                        'filename' => 'transactions_overview'
-                    ),
-                    'transactions_overview_table_column_headings_help_tab' => array(
-                        'title'    => esc_html__('Transactions Table Column Headings', 'event_espresso'),
-                        'filename' => 'transactions_overview_table_column_headings'
-                    ),
-                    'transactions_overview_views_filters_help_tab'         => array(
-                        'title'    => esc_html__('Transaction Views & Filters & Search', 'event_espresso'),
-                        'filename' => 'transactions_overview_views_filters_search'
-                    ),
-                ),
-                'help_tour'     => array('Transactions_Overview_Help_Tour'),
-                /**
-                 * commented out because currently we are not displaying tips for transaction list table status but this
-                 * may change in a later iteration so want to keep the code for then.
-                 */
-                //'qtips' => array( 'Transactions_List_Table_Tips' ),
-                'require_nonce' => false
-            ),
-            'view_transaction' => array(
-                'nav'       => array(
-                    'label'      => esc_html__('View Transaction', 'event_espresso'),
-                    'order'      => 5,
-                    'url'        => isset($this->_req_data['TXN_ID']) ? add_query_arg(array('TXN_ID' => $this->_req_data['TXN_ID']),
-                        $this->_current_page_view_url) : $this->_admin_base_url,
-                    'persistent' => false
-                ),
-                'help_tabs' => array(
-                    'transactions_view_transaction_help_tab'                                              => array(
-                        'title'    => esc_html__('View Transaction', 'event_espresso'),
-                        'filename' => 'transactions_view_transaction'
-                    ),
-                    'transactions_view_transaction_transaction_details_table_help_tab'                    => array(
-                        'title'    => esc_html__('Transaction Details Table', 'event_espresso'),
-                        'filename' => 'transactions_view_transaction_transaction_details_table'
-                    ),
-                    'transactions_view_transaction_attendees_registered_help_tab'                         => array(
-                        'title'    => esc_html__('Attendees Registered', 'event_espresso'),
-                        'filename' => 'transactions_view_transaction_attendees_registered'
-                    ),
-                    'transactions_view_transaction_views_primary_registrant_billing_information_help_tab' => array(
-                        'title'    => esc_html__('Primary Registrant & Billing Information', 'event_espresso'),
-                        'filename' => 'transactions_view_transaction_primary_registrant_billing_information'
-                    ),
-                ),
-                'qtips'     => array('Transaction_Details_Tips'),
-                'help_tour' => array('Transaction_Details_Help_Tour'),
-                'metaboxes' => array('_transaction_details_metaboxes'),
-
-                'require_nonce' => false
-            )
-        );
-    }
-
-
-    /**
-     * The below methods aren't used by this class currently
-     */
-    protected function _add_screen_options()
-    {
-    }
-
-    protected function _add_feature_pointers()
-    {
-    }
-
-    public function admin_init()
-    {
-        // IF a registration was JUST added via the admin...
-        if (
-        isset(
-            $this->_req_data['redirect_from'],
-            $this->_req_data['EVT_ID'],
-            $this->_req_data['event_name']
-        )
-        ) {
-            // then set a cookie so that we can block any attempts to use
-            // the back button as a way to enter another registration.
-            setcookie('ee_registration_added', $this->_req_data['EVT_ID'], time() + WEEK_IN_SECONDS, '/');
-            // and update the global
-            $_COOKIE['ee_registration_added'] = $this->_req_data['EVT_ID'];
-        }
-        EE_Registry::$i18n_js_strings['invalid_server_response'] = esc_html__('An error occurred! Your request may have been processed, but a valid response from the server was not received. Please refresh the page and try again.',
-            'event_espresso');
-        EE_Registry::$i18n_js_strings['error_occurred']          = esc_html__('An error occurred! Please refresh the page and try again.',
-            'event_espresso');
-        EE_Registry::$i18n_js_strings['txn_status_array']        = self::$_txn_status;
-        EE_Registry::$i18n_js_strings['pay_status_array']        = self::$_pay_status;
-        EE_Registry::$i18n_js_strings['payments_total']          = esc_html__('Payments Total', 'event_espresso');
-        EE_Registry::$i18n_js_strings['transaction_overpaid']    = esc_html__('This transaction has been overpaid ! Payments Total',
-            'event_espresso');
-    }
-
-    public function admin_notices()
-    {
-    }
-
-    public function admin_footer_scripts()
-    {
-    }
-
-
-    /**
-     * _set_transaction_status_array
-     * sets list of transaction statuses
-     *
-     * @access private
-     * @return void
-     */
-    private function _set_transaction_status_array()
-    {
-        self::$_txn_status = EEM_Transaction::instance()->status_array(true);
-    }
-
-
-    /**
-     * get_transaction_status_array
-     * return the transaction status array for wp_list_table
-     *
-     * @access public
-     * @return array
-     */
-    public function get_transaction_status_array()
-    {
-        return self::$_txn_status;
-    }
-
-
-    /**
-     *    get list of payment statuses
-     *
-     * @access private
-     * @return void
-     */
-    private function _get_payment_status_array()
-    {
-        self::$_pay_status                      = EEM_Payment::instance()->status_array(true);
-        $this->_template_args['payment_status'] = self::$_pay_status;
-
-    }
-
-
-    /**
-     *    _add_screen_options_default
-     *
-     * @access protected
-     * @return void
-     */
-    protected function _add_screen_options_default()
-    {
-        $this->_per_page_screen_option();
-    }
-
-
-    /**
-     * load_scripts_styles
-     *
-     * @access public
-     * @return void
-     */
-    public function load_scripts_styles()
-    {
-        //enqueue style
-        wp_register_style('espresso_txn', TXN_ASSETS_URL . 'espresso_transactions_admin.css', array(),
-            EVENT_ESPRESSO_VERSION);
-        wp_enqueue_style('espresso_txn');
-        //scripts
-        wp_register_script('espresso_txn', TXN_ASSETS_URL . 'espresso_transactions_admin.js', array(
-            'ee_admin_js',
-            'ee-datepicker',
-            'jquery-ui-datepicker',
-            'jquery-ui-draggable',
-            'ee-dialog',
-            'ee-accounting',
-            'ee-serialize-full-array'
-        ), EVENT_ESPRESSO_VERSION, true);
-        wp_enqueue_script('espresso_txn');
-
-    }
-
-
-    /**
-     *    load_scripts_styles_view_transaction
-     *
-     * @access public
-     * @return void
-     */
-    public function load_scripts_styles_view_transaction()
-    {
-        //styles
-        wp_enqueue_style('espresso-ui-theme');
-    }
-
-
-    /**
-     *    load_scripts_styles_default
-     *
-     * @access public
-     * @return void
-     */
-    public function load_scripts_styles_default()
-    {
-        //styles
-        wp_enqueue_style('espresso-ui-theme');
-    }
-
-
-    /**
-     *    _set_list_table_views_default
-     *
-     * @access protected
-     * @return void
-     */
-    protected function _set_list_table_views_default()
-    {
-        $this->_views = array(
-            'all'       => array(
-                'slug'  => 'all',
-                'label' => esc_html__('View All Transactions', 'event_espresso'),
-                'count' => 0
-            ),
-            'abandoned' => array(
-                'slug'  => 'abandoned',
-                'label' => esc_html__('Abandoned Transactions', 'event_espresso'),
-                'count' => 0
-            ),
-            'failed'    => array(
-                'slug'  => 'failed',
-                'label' => esc_html__('Failed Transactions', 'event_espresso'),
-                'count' => 0
-            )
-        );
-    }
-
-
-    /**
-     * _set_transaction_object
-     * This sets the _transaction property for the transaction details screen
-     *
-     * @access private
-     * @return void
-     */
-    private function _set_transaction_object()
-    {
-        if (is_object($this->_transaction)) {
-            return;
-        } //get out we've already set the object
-
-        $TXN = EEM_Transaction::instance();
-
-        $TXN_ID = ( ! empty($this->_req_data['TXN_ID'])) ? absint($this->_req_data['TXN_ID']) : false;
-
-        //get transaction object
-        $this->_transaction = $TXN->get_one_by_ID($TXN_ID);
-        $this->_session     = ! empty($this->_transaction) ? $this->_transaction->get('TXN_session_data') : null;
-        $this->_transaction->verify_abandoned_transaction_status();
-
-        if (empty($this->_transaction)) {
-            $error_msg = esc_html__('An error occurred and the details for Transaction ID #',
-                    'event_espresso') . $TXN_ID . esc_html__(' could not be retrieved.', 'event_espresso');
-            EE_Error::add_error($error_msg, __FILE__, __FUNCTION__, __LINE__);
-        }
-    }
-
-
-    /**
-     *    _transaction_legend_items
-     *
-     * @access protected
-     * @return array
-     */
-    protected function _transaction_legend_items()
-    {
-        EE_Registry::instance()->load_helper('MSG_Template');
-        $items = array();
-
-        if (EE_Registry::instance()->CAP->current_user_can('ee_read_global_messages', 'view_filtered_messages')) {
-            $related_for_icon = EEH_MSG_Template::get_message_action_icon('see_notifications_for');
-            if (isset($related_for_icon['css_class']) && isset($related_for_icon['label'])) {
-                $items['view_related_messages'] = array(
-                    'class' => $related_for_icon['css_class'],
-                    'desc'  => $related_for_icon['label'],
-                );
-            }
-        }
-
-        $items = apply_filters(
-            'FHEE__Transactions_Admin_Page___transaction_legend_items__items',
-            array_merge($items,
-                array(
-                    'view_details'      => array(
-                        'class' => 'dashicons dashicons-cart',
-                        'desc'  => esc_html__('View Transaction Details', 'event_espresso')
-                    ),
-                    'view_invoice'      => array(
-                        'class' => 'dashicons dashicons-media-spreadsheet',
-                        'desc'  => esc_html__('View Transaction Invoice', 'event_espresso')
-                    ),
-                    'view_receipt'      => array(
-                        'class' => 'dashicons dashicons-media-default',
-                        'desc'  => esc_html__('View Transaction Receipt', 'event_espresso')
-                    ),
-                    'view_registration' => array(
-                        'class' => 'dashicons dashicons-clipboard',
-                        'desc'  => esc_html__('View Registration Details', 'event_espresso')
-                    ),
-                    'payment_overview_link' => array(
-                        'class' => 'dashicons dashicons-money',
-                        'desc' => esc_html__('Make Payment on Frontend', 'event_espresso')
-                    )
-                )
-            )
-        );
-
-        if (EE_Registry::instance()->CAP->current_user_can('ee_send_message',
-            'espresso_transactions_send_payment_reminder')
-        ) {
-            if (EEH_MSG_Template::is_mt_active('payment_reminder')) {
-                $items['send_payment_reminder'] = array(
-                    'class' => 'dashicons dashicons-email-alt',
-                    'desc'  => esc_html__('Send Payment Reminder', 'event_espresso')
-                );
-            } else {
-                $items['blank*'] = array(
-                    'class' => '',
-                    'desc'  => ''
-                );
-            }
-        } else {
-            $items['blank*'] = array(
-                'class' => '',
-                'desc'  => ''
-            );
-        }
-        $more_items = apply_filters(
-            'FHEE__Transactions_Admin_Page___transaction_legend_items__more_items',
-            array(
-                'overpaid'   => array(
-                    'class' => 'ee-status-legend ee-status-legend-' . EEM_Transaction::overpaid_status_code,
-                    'desc'  => EEH_Template::pretty_status(EEM_Transaction::overpaid_status_code, false, 'sentence')
-                ),
-                'complete'   => array(
-                    'class' => 'ee-status-legend ee-status-legend-' . EEM_Transaction::complete_status_code,
-                    'desc'  => EEH_Template::pretty_status(EEM_Transaction::complete_status_code, false, 'sentence')
-                ),
-                'incomplete' => array(
-                    'class' => 'ee-status-legend ee-status-legend-' . EEM_Transaction::incomplete_status_code,
-                    'desc'  => EEH_Template::pretty_status(EEM_Transaction::incomplete_status_code, false, 'sentence')
-                ),
-                'abandoned'  => array(
-                    'class' => 'ee-status-legend ee-status-legend-' . EEM_Transaction::abandoned_status_code,
-                    'desc'  => EEH_Template::pretty_status(EEM_Transaction::abandoned_status_code, false, 'sentence')
-                ),
-                'failed'     => array(
-                    'class' => 'ee-status-legend ee-status-legend-' . EEM_Transaction::failed_status_code,
-                    'desc'  => EEH_Template::pretty_status(EEM_Transaction::failed_status_code, false, 'sentence')
-                )
-            )
-        );
-
-        return array_merge($items, $more_items);
-    }
-
-
-    /**
-     *    _transactions_overview_list_table
-     *
-     * @access protected
-     * @return void
-     */
-    protected function _transactions_overview_list_table()
-    {
-        $this->_admin_page_title                   = esc_html__('Transactions', 'event_espresso');
-        $event                                     = isset($this->_req_data['EVT_ID']) ? EEM_Event::instance()->get_one_by_ID($this->_req_data['EVT_ID']) : null;
-        $this->_template_args['admin_page_header'] = $event instanceof EE_Event ? sprintf(esc_html__('%sViewing Transactions for the Event: %s%s',
-            'event_espresso'), '<h3>',
-            '<a href="' . EE_Admin_Page::add_query_args_and_nonce(array('action' => 'edit', 'post' => $event->ID()),
-                EVENTS_ADMIN_URL) . '" title="' . esc_attr__('Click to Edit event',
-                'event_espresso') . '">' . $event->get('EVT_name') . '</a>', '</h3>') : '';
-        $this->_template_args['after_list_table']  = $this->_display_legend($this->_transaction_legend_items());
-        $this->display_admin_list_table_page_with_no_sidebar();
-    }
-
-
-    /**
-     *    _transaction_details
-     * generates HTML for the View Transaction Details Admin page
-     *
-     * @access protected
-     * @return void
-     */
-    protected function _transaction_details()
-    {
-        do_action('AHEE__Transactions_Admin_Page__transaction_details__start', $this->_transaction);
-
-        $this->_set_transaction_status_array();
-
-        $this->_template_args                      = array();
-        $this->_template_args['transactions_page'] = $this->_wp_page_slug;
-
-        $this->_set_transaction_object();
-
-        $primary_registration = $this->_transaction->primary_registration();
-        $attendee             = $primary_registration instanceof EE_Registration ? $primary_registration->attendee() : null;
-
-        $this->_template_args['txn_nmbr']['value'] = $this->_transaction->ID();
-        $this->_template_args['txn_nmbr']['label'] = esc_html__('Transaction Number', 'event_espresso');
-
-        $this->_template_args['txn_datetime']['value'] = $this->_transaction->get_i18n_datetime('TXN_timestamp');
-        $this->_template_args['txn_datetime']['label'] = esc_html__('Date', 'event_espresso');
-
-        $this->_template_args['txn_status']['value'] = self::$_txn_status[$this->_transaction->get('STS_ID')];
-        $this->_template_args['txn_status']['label'] = esc_html__('Transaction Status', 'event_espresso');
-        $this->_template_args['txn_status']['class'] = 'status-' . $this->_transaction->get('STS_ID');
-
-        $this->_template_args['grand_total'] = $this->_transaction->get('TXN_total');
-        $this->_template_args['total_paid']  = $this->_transaction->get('TXN_paid');
-
-        if (
-            $attendee instanceof EE_Attendee
-            && EE_Registry::instance()->CAP->current_user_can(
-                'ee_send_message',
-                'espresso_transactions_send_payment_reminder'
-            )
-        ) {
-            $this->_template_args['send_payment_reminder_button'] =
-                EEH_MSG_Template::is_mt_active('payment_reminder')
-                && $this->_transaction->get('STS_ID') != EEM_Transaction::complete_status_code
-                && $this->_transaction->get('STS_ID') != EEM_Transaction::overpaid_status_code
-                    ? EEH_Template::get_button_or_link(
-                    EE_Admin_Page::add_query_args_and_nonce(
-                        array(
-                            'action'      => 'send_payment_reminder',
-                            'TXN_ID'      => $this->_transaction->ID(),
-                            'redirect_to' => 'view_transaction'
-                        ),
-                        TXN_ADMIN_URL
-                    ),
-                    __(' Send Payment Reminder', 'event_espresso'),
-                    'button secondary-button right',
-                    'dashicons dashicons-email-alt'
-                )
-                    : '';
-        } else {
-            $this->_template_args['send_payment_reminder_button'] = '';
-        }
-
-        $amount_due                         = $this->_transaction->get('TXN_total') - $this->_transaction->get('TXN_paid');
-        $this->_template_args['amount_due'] = EEH_Template::format_currency($amount_due, true);
-        if (EE_Registry::instance()->CFG->currency->sign_b4) {
-            $this->_template_args['amount_due'] = EE_Registry::instance()->CFG->currency->sign . $this->_template_args['amount_due'];
-        } else {
-            $this->_template_args['amount_due'] = $this->_template_args['amount_due'] . EE_Registry::instance()->CFG->currency->sign;
-        }
-        $this->_template_args['amount_due_class'] = '';
-
-        if ($this->_transaction->get('TXN_paid') == $this->_transaction->get('TXN_total')) {
-            // paid in full
-            $this->_template_args['amount_due'] = false;
-        } elseif ($this->_transaction->get('TXN_paid') > $this->_transaction->get('TXN_total')) {
-            // overpaid
-            $this->_template_args['amount_due_class'] = 'txn-overview-no-payment-spn';
-        } elseif (($this->_transaction->get('TXN_total') > 0) && ($this->_transaction->get('TXN_paid') > 0)) {
-            // monies owing
-            $this->_template_args['amount_due_class'] = 'txn-overview-part-payment-spn';
-        } elseif (($this->_transaction->get('TXN_total') > 0) && ($this->_transaction->get('TXN_paid') == 0)) {
-            // no payments made yet
-            $this->_template_args['amount_due_class'] = 'txn-overview-no-payment-spn';
-        } elseif ($this->_transaction->get('TXN_total') == 0) {
-            // free event
-            $this->_template_args['amount_due'] = false;
-        }
-
-        $payment_method = $this->_transaction->payment_method();
-
-        $this->_template_args['method_of_payment_name'] = $payment_method instanceof EE_Payment_Method
-            ? $payment_method->admin_name()
-            : esc_html__('Unknown', 'event_espresso');
-
-        $this->_template_args['currency_sign'] = EE_Registry::instance()->CFG->currency->sign;
-        // link back to overview
-        $this->_template_args['txn_overview_url'] = ! empty ($_SERVER['HTTP_REFERER'])
-            ? $_SERVER['HTTP_REFERER']
-            : TXN_ADMIN_URL;
-
-
-        // next link
-        $next_txn                                 = $this->_transaction->next(
-            null,
-            array(array('STS_ID' => array('!=', EEM_Transaction::failed_status_code))),
-            'TXN_ID'
-        );
-        $this->_template_args['next_transaction'] = $next_txn
-            ? $this->_next_link(
-                EE_Admin_Page::add_query_args_and_nonce(
-                    array('action' => 'view_transaction', 'TXN_ID' => $next_txn['TXN_ID']),
-                    TXN_ADMIN_URL
-                ),
-                'dashicons dashicons-arrow-right ee-icon-size-22'
-            )
-            : '';
-        // previous link
-        $previous_txn                                 = $this->_transaction->previous(
-            null,
-            array(array('STS_ID' => array('!=', EEM_Transaction::failed_status_code))),
-            'TXN_ID'
-        );
-        $this->_template_args['previous_transaction'] = $previous_txn
-            ? $this->_previous_link(
-                EE_Admin_Page::add_query_args_and_nonce(
-                    array('action' => 'view_transaction', 'TXN_ID' => $previous_txn['TXN_ID']),
-                    TXN_ADMIN_URL
-                ),
-                'dashicons dashicons-arrow-left ee-icon-size-22'
-            )
-            : '';
-
-        // were we just redirected here after adding a new registration ???
-        if (
-        isset(
-            $this->_req_data['redirect_from'],
-            $this->_req_data['EVT_ID'],
-            $this->_req_data['event_name']
-        )
-        ) {
-            if (
-            EE_Registry::instance()->CAP->current_user_can(
-                'ee_edit_registrations',
-                'espresso_registrations_new_registration',
-                $this->_req_data['EVT_ID']
-            )
-            ) {
-                $this->_admin_page_title .= '<a id="add-new-registration" class="add-new-h2 button-primary" href="';
-                $this->_admin_page_title .= EE_Admin_Page::add_query_args_and_nonce(
-                    array(
-                        'page'     => 'espresso_registrations',
-                        'action'   => 'new_registration',
-                        'return'   => 'default',
-                        'TXN_ID'   => $this->_transaction->ID(),
-                        'event_id' => $this->_req_data['EVT_ID'],
-                    ),
-                    REG_ADMIN_URL
-                );
-                $this->_admin_page_title .= '">';
-
-                $this->_admin_page_title .= sprintf(
-                    esc_html__('Add Another New Registration to Event: "%1$s" ?', 'event_espresso'),
-                    htmlentities(urldecode($this->_req_data['event_name']), ENT_QUOTES, 'UTF-8')
-                );
-                $this->_admin_page_title .= '</a>';
-            }
-            EE_Registry::instance()->SSN->clear_session(__CLASS__, __FUNCTION__);
-        }
-        // grab messages at the last second
-        $this->_template_args['notices'] = EE_Error::get_notices();
-        // path to template
-        $template_path                             = TXN_TEMPLATE_PATH . 'txn_admin_details_header.template.php';
-        $this->_template_args['admin_page_header'] = EEH_Template::display_template($template_path,
-            $this->_template_args, true);
-
-        // the details template wrapper
-        $this->display_admin_page_with_sidebar();
-
-    }
-
-
-    /**
-     *        _transaction_details_metaboxes
-     *
-     * @access protected
-     * @return void
-     */
-    protected function _transaction_details_metaboxes()
-    {
-
-        $this->_set_transaction_object();
-
-        add_meta_box('edit-txn-details-mbox', esc_html__('Transaction Details', 'event_espresso'),
-            array($this, 'txn_details_meta_box'), $this->_wp_page_slug, 'normal', 'high');
-        add_meta_box(
-            'edit-txn-attendees-mbox',
-            esc_html__('Attendees Registered in this Transaction', 'event_espresso'),
-            array($this, 'txn_attendees_meta_box'),
-            $this->_wp_page_slug,
-            'normal',
-            'high',
-            array('TXN_ID' => $this->_transaction->ID())
-        );
-        add_meta_box('edit-txn-registrant-mbox', esc_html__('Primary Contact', 'event_espresso'),
-            array($this, 'txn_registrant_side_meta_box'), $this->_wp_page_slug, 'side', 'high');
-        add_meta_box('edit-txn-billing-info-mbox', esc_html__('Billing Information', 'event_espresso'),
-            array($this, 'txn_billing_info_side_meta_box'), $this->_wp_page_slug, 'side', 'high');
-
-    }
-
-
-    /**
-     * txn_details_meta_box
-     * generates HTML for the Transaction main meta box
-     *
-     * @access public
-     * @return void
-     */
-    public function txn_details_meta_box()
-    {
-
-        $this->_set_transaction_object();
-        $this->_template_args['TXN_ID']   = $this->_transaction->ID();
-        $this->_template_args['attendee'] = $this->_transaction->primary_registration() instanceof EE_Registration ? $this->_transaction->primary_registration()->attendee() : null;
-
-        //get line table
-        EEH_Autoloader::register_line_item_display_autoloaders();
-        $Line_Item_Display                       = new EE_Line_Item_Display('admin_table',
-            'EE_Admin_Table_Line_Item_Display_Strategy');
-        $this->_template_args['line_item_table'] = $Line_Item_Display->display_line_item($this->_transaction->total_line_item());
-        $this->_template_args['REG_code']        = $this->_transaction->get_first_related('Registration')->get('REG_code');
-
-        // process taxes
-        $taxes                         = $this->_transaction->get_many_related('Line_Item',
-            array(array('LIN_type' => EEM_Line_Item::type_tax)));
-        $this->_template_args['taxes'] = ! empty($taxes) ? $taxes : false;
-
-        $this->_template_args['grand_total']     = EEH_Template::format_currency($this->_transaction->get('TXN_total'),
-            false, false);
-        $this->_template_args['grand_raw_total'] = $this->_transaction->get('TXN_total');
-        $this->_template_args['TXN_status']      = $this->_transaction->get('STS_ID');
+	/**
+	 * @var EE_Transaction
+	 */
+	private $_transaction;
+
+	/**
+	 * @var EE_Session
+	 */
+	private $_session;
+
+	/**
+	 * @var array $_txn_status
+	 */
+	private static $_txn_status;
+
+	/**
+	 * @var array $_pay_status
+	 */
+	private static $_pay_status;
+
+	/**
+	 * @var array $_existing_reg_payment_REG_IDs
+	 */
+	protected $_existing_reg_payment_REG_IDs = null;
+
+
+	/**
+	 * @Constructor
+	 * @access public
+	 *
+	 * @param bool $routing
+	 *
+	 * @return Transactions_Admin_Page
+	 */
+	public function __construct($routing = true)
+	{
+		parent::__construct($routing);
+	}
+
+
+	/**
+	 *    _init_page_props
+	 * @return void
+	 */
+	protected function _init_page_props()
+	{
+		$this->page_slug        = TXN_PG_SLUG;
+		$this->page_label       = esc_html__('Transactions', 'event_espresso');
+		$this->_admin_base_url  = TXN_ADMIN_URL;
+		$this->_admin_base_path = TXN_ADMIN;
+	}
+
+
+	/**
+	 *    _ajax_hooks
+	 * @return void
+	 */
+	protected function _ajax_hooks()
+	{
+		add_action('wp_ajax_espresso_apply_payment', array($this, 'apply_payments_or_refunds'));
+		add_action('wp_ajax_espresso_apply_refund', array($this, 'apply_payments_or_refunds'));
+		add_action('wp_ajax_espresso_delete_payment', array($this, 'delete_payment'));
+	}
+
+
+	/**
+	 *    _define_page_props
+	 * @return void
+	 */
+	protected function _define_page_props()
+	{
+		$this->_admin_page_title = $this->page_label;
+		$this->_labels           = array(
+			'buttons' => array(
+				'add'    => esc_html__('Add New Transaction', 'event_espresso'),
+				'edit'   => esc_html__('Edit Transaction', 'event_espresso'),
+				'delete' => esc_html__('Delete Transaction', 'event_espresso'),
+			)
+		);
+	}
+
+
+	/**
+	 *        grab url requests and route them
+	 * @access private
+	 * @return void
+	 */
+	public function _set_page_routes()
+	{
+
+		$this->_set_transaction_status_array();
+
+		$txn_id = ! empty($this->_req_data['TXN_ID']) && ! is_array($this->_req_data['TXN_ID']) ? $this->_req_data['TXN_ID'] : 0;
+
+		$this->_page_routes = array(
+
+			'default' => array(
+				'func'       => '_transactions_overview_list_table',
+				'capability' => 'ee_read_transactions'
+			),
+
+			'view_transaction' => array(
+				'func'       => '_transaction_details',
+				'capability' => 'ee_read_transaction',
+				'obj_id'     => $txn_id
+			),
+
+			'send_payment_reminder' => array(
+				'func'       => '_send_payment_reminder',
+				'noheader'   => true,
+				'capability' => 'ee_send_message'
+			),
+
+			'espresso_apply_payment' => array(
+				'func'       => 'apply_payments_or_refunds',
+				'noheader'   => true,
+				'capability' => 'ee_edit_payments'
+			),
+
+			'espresso_apply_refund' => array(
+				'func'       => 'apply_payments_or_refunds',
+				'noheader'   => true,
+				'capability' => 'ee_edit_payments'
+			),
+
+			'espresso_delete_payment' => array(
+				'func'       => 'delete_payment',
+				'noheader'   => true,
+				'capability' => 'ee_delete_payments'
+			),
+
+		);
+
+	}
+
+
+	protected function _set_page_config()
+	{
+		$this->_page_config = array(
+			'default'          => array(
+				'nav'           => array(
+					'label' => esc_html__('Overview', 'event_espresso'),
+					'order' => 10
+				),
+				'list_table'    => 'EE_Admin_Transactions_List_Table',
+				'help_tabs'     => array(
+					'transactions_overview_help_tab'                       => array(
+						'title'    => esc_html__('Transactions Overview', 'event_espresso'),
+						'filename' => 'transactions_overview'
+					),
+					'transactions_overview_table_column_headings_help_tab' => array(
+						'title'    => esc_html__('Transactions Table Column Headings', 'event_espresso'),
+						'filename' => 'transactions_overview_table_column_headings'
+					),
+					'transactions_overview_views_filters_help_tab'         => array(
+						'title'    => esc_html__('Transaction Views & Filters & Search', 'event_espresso'),
+						'filename' => 'transactions_overview_views_filters_search'
+					),
+				),
+				'help_tour'     => array('Transactions_Overview_Help_Tour'),
+				/**
+				 * commented out because currently we are not displaying tips for transaction list table status but this
+				 * may change in a later iteration so want to keep the code for then.
+				 */
+				//'qtips' => array( 'Transactions_List_Table_Tips' ),
+				'require_nonce' => false
+			),
+			'view_transaction' => array(
+				'nav'       => array(
+					'label'      => esc_html__('View Transaction', 'event_espresso'),
+					'order'      => 5,
+					'url'        => isset($this->_req_data['TXN_ID']) ? add_query_arg(array('TXN_ID' => $this->_req_data['TXN_ID']),
+						$this->_current_page_view_url) : $this->_admin_base_url,
+					'persistent' => false
+				),
+				'help_tabs' => array(
+					'transactions_view_transaction_help_tab'                                              => array(
+						'title'    => esc_html__('View Transaction', 'event_espresso'),
+						'filename' => 'transactions_view_transaction'
+					),
+					'transactions_view_transaction_transaction_details_table_help_tab'                    => array(
+						'title'    => esc_html__('Transaction Details Table', 'event_espresso'),
+						'filename' => 'transactions_view_transaction_transaction_details_table'
+					),
+					'transactions_view_transaction_attendees_registered_help_tab'                         => array(
+						'title'    => esc_html__('Attendees Registered', 'event_espresso'),
+						'filename' => 'transactions_view_transaction_attendees_registered'
+					),
+					'transactions_view_transaction_views_primary_registrant_billing_information_help_tab' => array(
+						'title'    => esc_html__('Primary Registrant & Billing Information', 'event_espresso'),
+						'filename' => 'transactions_view_transaction_primary_registrant_billing_information'
+					),
+				),
+				'qtips'     => array('Transaction_Details_Tips'),
+				'help_tour' => array('Transaction_Details_Help_Tour'),
+				'metaboxes' => array('_transaction_details_metaboxes'),
+
+				'require_nonce' => false
+			)
+		);
+	}
+
+
+	/**
+	 * The below methods aren't used by this class currently
+	 */
+	protected function _add_screen_options()
+	{
+	}
+
+	protected function _add_feature_pointers()
+	{
+	}
+
+	public function admin_init()
+	{
+		// IF a registration was JUST added via the admin...
+		if (
+		isset(
+			$this->_req_data['redirect_from'],
+			$this->_req_data['EVT_ID'],
+			$this->_req_data['event_name']
+		)
+		) {
+			// then set a cookie so that we can block any attempts to use
+			// the back button as a way to enter another registration.
+			setcookie('ee_registration_added', $this->_req_data['EVT_ID'], time() + WEEK_IN_SECONDS, '/');
+			// and update the global
+			$_COOKIE['ee_registration_added'] = $this->_req_data['EVT_ID'];
+		}
+		EE_Registry::$i18n_js_strings['invalid_server_response'] = esc_html__('An error occurred! Your request may have been processed, but a valid response from the server was not received. Please refresh the page and try again.',
+			'event_espresso');
+		EE_Registry::$i18n_js_strings['error_occurred']          = esc_html__('An error occurred! Please refresh the page and try again.',
+			'event_espresso');
+		EE_Registry::$i18n_js_strings['txn_status_array']        = self::$_txn_status;
+		EE_Registry::$i18n_js_strings['pay_status_array']        = self::$_pay_status;
+		EE_Registry::$i18n_js_strings['payments_total']          = esc_html__('Payments Total', 'event_espresso');
+		EE_Registry::$i18n_js_strings['transaction_overpaid']    = esc_html__('This transaction has been overpaid ! Payments Total',
+			'event_espresso');
+	}
+
+	public function admin_notices()
+	{
+	}
+
+	public function admin_footer_scripts()
+	{
+	}
+
+
+	/**
+	 * _set_transaction_status_array
+	 * sets list of transaction statuses
+	 *
+	 * @access private
+	 * @return void
+	 */
+	private function _set_transaction_status_array()
+	{
+		self::$_txn_status = EEM_Transaction::instance()->status_array(true);
+	}
+
+
+	/**
+	 * get_transaction_status_array
+	 * return the transaction status array for wp_list_table
+	 *
+	 * @access public
+	 * @return array
+	 */
+	public function get_transaction_status_array()
+	{
+		return self::$_txn_status;
+	}
+
+
+	/**
+	 *    get list of payment statuses
+	 *
+	 * @access private
+	 * @return void
+	 */
+	private function _get_payment_status_array()
+	{
+		self::$_pay_status                      = EEM_Payment::instance()->status_array(true);
+		$this->_template_args['payment_status'] = self::$_pay_status;
+
+	}
+
+
+	/**
+	 *    _add_screen_options_default
+	 *
+	 * @access protected
+	 * @return void
+	 */
+	protected function _add_screen_options_default()
+	{
+		$this->_per_page_screen_option();
+	}
+
+
+	/**
+	 * load_scripts_styles
+	 *
+	 * @access public
+	 * @return void
+	 */
+	public function load_scripts_styles()
+	{
+		//enqueue style
+		wp_register_style('espresso_txn', TXN_ASSETS_URL . 'espresso_transactions_admin.css', array(),
+			EVENT_ESPRESSO_VERSION);
+		wp_enqueue_style('espresso_txn');
+		//scripts
+		wp_register_script('espresso_txn', TXN_ASSETS_URL . 'espresso_transactions_admin.js', array(
+			'ee_admin_js',
+			'ee-datepicker',
+			'jquery-ui-datepicker',
+			'jquery-ui-draggable',
+			'ee-dialog',
+			'ee-accounting',
+			'ee-serialize-full-array'
+		), EVENT_ESPRESSO_VERSION, true);
+		wp_enqueue_script('espresso_txn');
+
+	}
+
+
+	/**
+	 *    load_scripts_styles_view_transaction
+	 *
+	 * @access public
+	 * @return void
+	 */
+	public function load_scripts_styles_view_transaction()
+	{
+		//styles
+		wp_enqueue_style('espresso-ui-theme');
+	}
+
+
+	/**
+	 *    load_scripts_styles_default
+	 *
+	 * @access public
+	 * @return void
+	 */
+	public function load_scripts_styles_default()
+	{
+		//styles
+		wp_enqueue_style('espresso-ui-theme');
+	}
+
+
+	/**
+	 *    _set_list_table_views_default
+	 *
+	 * @access protected
+	 * @return void
+	 */
+	protected function _set_list_table_views_default()
+	{
+		$this->_views = array(
+			'all'       => array(
+				'slug'  => 'all',
+				'label' => esc_html__('View All Transactions', 'event_espresso'),
+				'count' => 0
+			),
+			'abandoned' => array(
+				'slug'  => 'abandoned',
+				'label' => esc_html__('Abandoned Transactions', 'event_espresso'),
+				'count' => 0
+			),
+			'failed'    => array(
+				'slug'  => 'failed',
+				'label' => esc_html__('Failed Transactions', 'event_espresso'),
+				'count' => 0
+			)
+		);
+	}
+
+
+	/**
+	 * _set_transaction_object
+	 * This sets the _transaction property for the transaction details screen
+	 *
+	 * @access private
+	 * @return void
+	 */
+	private function _set_transaction_object()
+	{
+		if (is_object($this->_transaction)) {
+			return;
+		} //get out we've already set the object
+
+		$TXN = EEM_Transaction::instance();
+
+		$TXN_ID = ( ! empty($this->_req_data['TXN_ID'])) ? absint($this->_req_data['TXN_ID']) : false;
+
+		//get transaction object
+		$this->_transaction = $TXN->get_one_by_ID($TXN_ID);
+		$this->_session     = ! empty($this->_transaction) ? $this->_transaction->get('TXN_session_data') : null;
+		$this->_transaction->verify_abandoned_transaction_status();
+
+		if (empty($this->_transaction)) {
+			$error_msg = esc_html__('An error occurred and the details for Transaction ID #',
+					'event_espresso') . $TXN_ID . esc_html__(' could not be retrieved.', 'event_espresso');
+			EE_Error::add_error($error_msg, __FILE__, __FUNCTION__, __LINE__);
+		}
+	}
+
+
+	/**
+	 *    _transaction_legend_items
+	 *
+	 * @access protected
+	 * @return array
+	 */
+	protected function _transaction_legend_items()
+	{
+		EE_Registry::instance()->load_helper('MSG_Template');
+		$items = array();
+
+		if (EE_Registry::instance()->CAP->current_user_can('ee_read_global_messages', 'view_filtered_messages')) {
+			$related_for_icon = EEH_MSG_Template::get_message_action_icon('see_notifications_for');
+			if (isset($related_for_icon['css_class']) && isset($related_for_icon['label'])) {
+				$items['view_related_messages'] = array(
+					'class' => $related_for_icon['css_class'],
+					'desc'  => $related_for_icon['label'],
+				);
+			}
+		}
+
+		$items = apply_filters(
+			'FHEE__Transactions_Admin_Page___transaction_legend_items__items',
+			array_merge($items,
+				array(
+					'view_details'      => array(
+						'class' => 'dashicons dashicons-cart',
+						'desc'  => esc_html__('View Transaction Details', 'event_espresso')
+					),
+					'view_invoice'      => array(
+						'class' => 'dashicons dashicons-media-spreadsheet',
+						'desc'  => esc_html__('View Transaction Invoice', 'event_espresso')
+					),
+					'view_receipt'      => array(
+						'class' => 'dashicons dashicons-media-default',
+						'desc'  => esc_html__('View Transaction Receipt', 'event_espresso')
+					),
+					'view_registration' => array(
+						'class' => 'dashicons dashicons-clipboard',
+						'desc'  => esc_html__('View Registration Details', 'event_espresso')
+					),
+					'payment_overview_link' => array(
+						'class' => 'dashicons dashicons-money',
+						'desc' => esc_html__('Make Payment on Frontend', 'event_espresso')
+					)
+				)
+			)
+		);
+
+		if (EE_Registry::instance()->CAP->current_user_can('ee_send_message',
+			'espresso_transactions_send_payment_reminder')
+		) {
+			if (EEH_MSG_Template::is_mt_active('payment_reminder')) {
+				$items['send_payment_reminder'] = array(
+					'class' => 'dashicons dashicons-email-alt',
+					'desc'  => esc_html__('Send Payment Reminder', 'event_espresso')
+				);
+			} else {
+				$items['blank*'] = array(
+					'class' => '',
+					'desc'  => ''
+				);
+			}
+		} else {
+			$items['blank*'] = array(
+				'class' => '',
+				'desc'  => ''
+			);
+		}
+		$more_items = apply_filters(
+			'FHEE__Transactions_Admin_Page___transaction_legend_items__more_items',
+			array(
+				'overpaid'   => array(
+					'class' => 'ee-status-legend ee-status-legend-' . EEM_Transaction::overpaid_status_code,
+					'desc'  => EEH_Template::pretty_status(EEM_Transaction::overpaid_status_code, false, 'sentence')
+				),
+				'complete'   => array(
+					'class' => 'ee-status-legend ee-status-legend-' . EEM_Transaction::complete_status_code,
+					'desc'  => EEH_Template::pretty_status(EEM_Transaction::complete_status_code, false, 'sentence')
+				),
+				'incomplete' => array(
+					'class' => 'ee-status-legend ee-status-legend-' . EEM_Transaction::incomplete_status_code,
+					'desc'  => EEH_Template::pretty_status(EEM_Transaction::incomplete_status_code, false, 'sentence')
+				),
+				'abandoned'  => array(
+					'class' => 'ee-status-legend ee-status-legend-' . EEM_Transaction::abandoned_status_code,
+					'desc'  => EEH_Template::pretty_status(EEM_Transaction::abandoned_status_code, false, 'sentence')
+				),
+				'failed'     => array(
+					'class' => 'ee-status-legend ee-status-legend-' . EEM_Transaction::failed_status_code,
+					'desc'  => EEH_Template::pretty_status(EEM_Transaction::failed_status_code, false, 'sentence')
+				)
+			)
+		);
+
+		return array_merge($items, $more_items);
+	}
+
+
+	/**
+	 *    _transactions_overview_list_table
+	 *
+	 * @access protected
+	 * @return void
+	 */
+	protected function _transactions_overview_list_table()
+	{
+		$this->_admin_page_title                   = esc_html__('Transactions', 'event_espresso');
+		$event                                     = isset($this->_req_data['EVT_ID']) ? EEM_Event::instance()->get_one_by_ID($this->_req_data['EVT_ID']) : null;
+		$this->_template_args['admin_page_header'] = $event instanceof EE_Event ? sprintf(esc_html__('%sViewing Transactions for the Event: %s%s',
+			'event_espresso'), '<h3>',
+			'<a href="' . EE_Admin_Page::add_query_args_and_nonce(array('action' => 'edit', 'post' => $event->ID()),
+				EVENTS_ADMIN_URL) . '" title="' . esc_attr__('Click to Edit event',
+				'event_espresso') . '">' . $event->get('EVT_name') . '</a>', '</h3>') : '';
+		$this->_template_args['after_list_table']  = $this->_display_legend($this->_transaction_legend_items());
+		$this->display_admin_list_table_page_with_no_sidebar();
+	}
+
+
+	/**
+	 *    _transaction_details
+	 * generates HTML for the View Transaction Details Admin page
+	 *
+	 * @access protected
+	 * @return void
+	 */
+	protected function _transaction_details()
+	{
+		do_action('AHEE__Transactions_Admin_Page__transaction_details__start', $this->_transaction);
+
+		$this->_set_transaction_status_array();
+
+		$this->_template_args                      = array();
+		$this->_template_args['transactions_page'] = $this->_wp_page_slug;
+
+		$this->_set_transaction_object();
+
+		$primary_registration = $this->_transaction->primary_registration();
+		$attendee             = $primary_registration instanceof EE_Registration ? $primary_registration->attendee() : null;
+
+		$this->_template_args['txn_nmbr']['value'] = $this->_transaction->ID();
+		$this->_template_args['txn_nmbr']['label'] = esc_html__('Transaction Number', 'event_espresso');
+
+		$this->_template_args['txn_datetime']['value'] = $this->_transaction->get_i18n_datetime('TXN_timestamp');
+		$this->_template_args['txn_datetime']['label'] = esc_html__('Date', 'event_espresso');
+
+		$this->_template_args['txn_status']['value'] = self::$_txn_status[$this->_transaction->get('STS_ID')];
+		$this->_template_args['txn_status']['label'] = esc_html__('Transaction Status', 'event_espresso');
+		$this->_template_args['txn_status']['class'] = 'status-' . $this->_transaction->get('STS_ID');
+
+		$this->_template_args['grand_total'] = $this->_transaction->get('TXN_total');
+		$this->_template_args['total_paid']  = $this->_transaction->get('TXN_paid');
+
+		if (
+			$attendee instanceof EE_Attendee
+			&& EE_Registry::instance()->CAP->current_user_can(
+				'ee_send_message',
+				'espresso_transactions_send_payment_reminder'
+			)
+		) {
+			$this->_template_args['send_payment_reminder_button'] =
+				EEH_MSG_Template::is_mt_active('payment_reminder')
+				&& $this->_transaction->get('STS_ID') != EEM_Transaction::complete_status_code
+				&& $this->_transaction->get('STS_ID') != EEM_Transaction::overpaid_status_code
+					? EEH_Template::get_button_or_link(
+					EE_Admin_Page::add_query_args_and_nonce(
+						array(
+							'action'      => 'send_payment_reminder',
+							'TXN_ID'      => $this->_transaction->ID(),
+							'redirect_to' => 'view_transaction'
+						),
+						TXN_ADMIN_URL
+					),
+					__(' Send Payment Reminder', 'event_espresso'),
+					'button secondary-button right',
+					'dashicons dashicons-email-alt'
+				)
+					: '';
+		} else {
+			$this->_template_args['send_payment_reminder_button'] = '';
+		}
+
+		$amount_due                         = $this->_transaction->get('TXN_total') - $this->_transaction->get('TXN_paid');
+		$this->_template_args['amount_due'] = EEH_Template::format_currency($amount_due, true);
+		if (EE_Registry::instance()->CFG->currency->sign_b4) {
+			$this->_template_args['amount_due'] = EE_Registry::instance()->CFG->currency->sign . $this->_template_args['amount_due'];
+		} else {
+			$this->_template_args['amount_due'] = $this->_template_args['amount_due'] . EE_Registry::instance()->CFG->currency->sign;
+		}
+		$this->_template_args['amount_due_class'] = '';
+
+		if ($this->_transaction->get('TXN_paid') == $this->_transaction->get('TXN_total')) {
+			// paid in full
+			$this->_template_args['amount_due'] = false;
+		} elseif ($this->_transaction->get('TXN_paid') > $this->_transaction->get('TXN_total')) {
+			// overpaid
+			$this->_template_args['amount_due_class'] = 'txn-overview-no-payment-spn';
+		} elseif (($this->_transaction->get('TXN_total') > 0) && ($this->_transaction->get('TXN_paid') > 0)) {
+			// monies owing
+			$this->_template_args['amount_due_class'] = 'txn-overview-part-payment-spn';
+		} elseif (($this->_transaction->get('TXN_total') > 0) && ($this->_transaction->get('TXN_paid') == 0)) {
+			// no payments made yet
+			$this->_template_args['amount_due_class'] = 'txn-overview-no-payment-spn';
+		} elseif ($this->_transaction->get('TXN_total') == 0) {
+			// free event
+			$this->_template_args['amount_due'] = false;
+		}
+
+		$payment_method = $this->_transaction->payment_method();
+
+		$this->_template_args['method_of_payment_name'] = $payment_method instanceof EE_Payment_Method
+			? $payment_method->admin_name()
+			: esc_html__('Unknown', 'event_espresso');
+
+		$this->_template_args['currency_sign'] = EE_Registry::instance()->CFG->currency->sign;
+		// link back to overview
+		$this->_template_args['txn_overview_url'] = ! empty ($_SERVER['HTTP_REFERER'])
+			? $_SERVER['HTTP_REFERER']
+			: TXN_ADMIN_URL;
+
+
+		// next link
+		$next_txn                                 = $this->_transaction->next(
+			null,
+			array(array('STS_ID' => array('!=', EEM_Transaction::failed_status_code))),
+			'TXN_ID'
+		);
+		$this->_template_args['next_transaction'] = $next_txn
+			? $this->_next_link(
+				EE_Admin_Page::add_query_args_and_nonce(
+					array('action' => 'view_transaction', 'TXN_ID' => $next_txn['TXN_ID']),
+					TXN_ADMIN_URL
+				),
+				'dashicons dashicons-arrow-right ee-icon-size-22'
+			)
+			: '';
+		// previous link
+		$previous_txn                                 = $this->_transaction->previous(
+			null,
+			array(array('STS_ID' => array('!=', EEM_Transaction::failed_status_code))),
+			'TXN_ID'
+		);
+		$this->_template_args['previous_transaction'] = $previous_txn
+			? $this->_previous_link(
+				EE_Admin_Page::add_query_args_and_nonce(
+					array('action' => 'view_transaction', 'TXN_ID' => $previous_txn['TXN_ID']),
+					TXN_ADMIN_URL
+				),
+				'dashicons dashicons-arrow-left ee-icon-size-22'
+			)
+			: '';
+
+		// were we just redirected here after adding a new registration ???
+		if (
+		isset(
+			$this->_req_data['redirect_from'],
+			$this->_req_data['EVT_ID'],
+			$this->_req_data['event_name']
+		)
+		) {
+			if (
+			EE_Registry::instance()->CAP->current_user_can(
+				'ee_edit_registrations',
+				'espresso_registrations_new_registration',
+				$this->_req_data['EVT_ID']
+			)
+			) {
+				$this->_admin_page_title .= '<a id="add-new-registration" class="add-new-h2 button-primary" href="';
+				$this->_admin_page_title .= EE_Admin_Page::add_query_args_and_nonce(
+					array(
+						'page'     => 'espresso_registrations',
+						'action'   => 'new_registration',
+						'return'   => 'default',
+						'TXN_ID'   => $this->_transaction->ID(),
+						'event_id' => $this->_req_data['EVT_ID'],
+					),
+					REG_ADMIN_URL
+				);
+				$this->_admin_page_title .= '">';
+
+				$this->_admin_page_title .= sprintf(
+					esc_html__('Add Another New Registration to Event: "%1$s" ?', 'event_espresso'),
+					htmlentities(urldecode($this->_req_data['event_name']), ENT_QUOTES, 'UTF-8')
+				);
+				$this->_admin_page_title .= '</a>';
+			}
+			EE_Registry::instance()->SSN->clear_session(__CLASS__, __FUNCTION__);
+		}
+		// grab messages at the last second
+		$this->_template_args['notices'] = EE_Error::get_notices();
+		// path to template
+		$template_path                             = TXN_TEMPLATE_PATH . 'txn_admin_details_header.template.php';
+		$this->_template_args['admin_page_header'] = EEH_Template::display_template($template_path,
+			$this->_template_args, true);
+
+		// the details template wrapper
+		$this->display_admin_page_with_sidebar();
+
+	}
+
+
+	/**
+	 *        _transaction_details_metaboxes
+	 *
+	 * @access protected
+	 * @return void
+	 */
+	protected function _transaction_details_metaboxes()
+	{
+
+		$this->_set_transaction_object();
+
+		add_meta_box('edit-txn-details-mbox', esc_html__('Transaction Details', 'event_espresso'),
+			array($this, 'txn_details_meta_box'), $this->_wp_page_slug, 'normal', 'high');
+		add_meta_box(
+			'edit-txn-attendees-mbox',
+			esc_html__('Attendees Registered in this Transaction', 'event_espresso'),
+			array($this, 'txn_attendees_meta_box'),
+			$this->_wp_page_slug,
+			'normal',
+			'high',
+			array('TXN_ID' => $this->_transaction->ID())
+		);
+		add_meta_box('edit-txn-registrant-mbox', esc_html__('Primary Contact', 'event_espresso'),
+			array($this, 'txn_registrant_side_meta_box'), $this->_wp_page_slug, 'side', 'high');
+		add_meta_box('edit-txn-billing-info-mbox', esc_html__('Billing Information', 'event_espresso'),
+			array($this, 'txn_billing_info_side_meta_box'), $this->_wp_page_slug, 'side', 'high');
+
+	}
+
+
+	/**
+	 * txn_details_meta_box
+	 * generates HTML for the Transaction main meta box
+	 *
+	 * @access public
+	 * @return void
+	 */
+	public function txn_details_meta_box()
+	{
+
+		$this->_set_transaction_object();
+		$this->_template_args['TXN_ID']   = $this->_transaction->ID();
+		$this->_template_args['attendee'] = $this->_transaction->primary_registration() instanceof EE_Registration ? $this->_transaction->primary_registration()->attendee() : null;
+
+		//get line table
+		EEH_Autoloader::register_line_item_display_autoloaders();
+		$Line_Item_Display                       = new EE_Line_Item_Display('admin_table',
+			'EE_Admin_Table_Line_Item_Display_Strategy');
+		$this->_template_args['line_item_table'] = $Line_Item_Display->display_line_item($this->_transaction->total_line_item());
+		$this->_template_args['REG_code']        = $this->_transaction->get_first_related('Registration')->get('REG_code');
+
+		// process taxes
+		$taxes                         = $this->_transaction->get_many_related('Line_Item',
+			array(array('LIN_type' => EEM_Line_Item::type_tax)));
+		$this->_template_args['taxes'] = ! empty($taxes) ? $taxes : false;
+
+		$this->_template_args['grand_total']     = EEH_Template::format_currency($this->_transaction->get('TXN_total'),
+			false, false);
+		$this->_template_args['grand_raw_total'] = $this->_transaction->get('TXN_total');
+		$this->_template_args['TXN_status']      = $this->_transaction->get('STS_ID');
 
 //		$txn_status_class = 'status-' . $this->_transaction->get('STS_ID');
 
-        // process payment details
-        $payments = $this->_transaction->get_many_related('Payment');
-        if ( ! empty($payments)) {
-            $this->_template_args['payments']              = $payments;
-            $this->_template_args['existing_reg_payments'] = $this->_get_registration_payment_IDs($payments);
-        } else {
-            $this->_template_args['payments']              = false;
-            $this->_template_args['existing_reg_payments'] = array();
-        }
-
-        $this->_template_args['edit_payment_url']   = add_query_arg(array('action' => 'edit_payment'), TXN_ADMIN_URL);
-        $this->_template_args['delete_payment_url'] = add_query_arg(array('action' => 'espresso_delete_payment'),
-            TXN_ADMIN_URL);
-
-        if (isset($txn_details['invoice_number'])) {
-            $this->_template_args['txn_details']['invoice_number']['value'] = $this->_template_args['REG_code'];
-            $this->_template_args['txn_details']['invoice_number']['label'] = esc_html__('Invoice Number',
-                'event_espresso');
-        }
-
-        $this->_template_args['txn_details']['registration_session']['value'] = $this->_transaction->get_first_related('Registration')->get('REG_session');
-        $this->_template_args['txn_details']['registration_session']['label'] = esc_html__('Registration Session',
-            'event_espresso');
-
-        $this->_template_args['txn_details']['ip_address']['value'] = isset($this->_session['ip_address']) ? $this->_session['ip_address'] : '';
-        $this->_template_args['txn_details']['ip_address']['label'] = esc_html__('Transaction placed from IP',
-            'event_espresso');
-
-        $this->_template_args['txn_details']['user_agent']['value'] = isset($this->_session['user_agent']) ? $this->_session['user_agent'] : '';
-        $this->_template_args['txn_details']['user_agent']['label'] = esc_html__('Registrant User Agent',
-            'event_espresso');
-
-        $reg_steps = '<ul>';
-        foreach ($this->_transaction->reg_steps() as $reg_step => $reg_step_status) {
-            if ($reg_step_status === true) {
-                $reg_steps .= '<li style="color:#70cc50">' . sprintf(esc_html__('%1$s : Completed', 'event_espresso'),
-                        ucwords(str_replace('_', ' ', $reg_step))) . '</li>';
-            } else if (is_numeric($reg_step_status) && $reg_step_status !== false) {
-                $reg_steps .= '<li style="color:#2EA2CC">' . sprintf(
-                        esc_html__('%1$s : Initiated %2$s', 'event_espresso'),
-                        ucwords(str_replace('_', ' ', $reg_step)),
-                        date(get_option('date_format') . ' ' . get_option('time_format'),
-                            ($reg_step_status + (get_option('gmt_offset') * HOUR_IN_SECONDS)))
-                    ) . '</li>';
-            } else {
-                $reg_steps .= '<li style="color:#E76700">' . sprintf(esc_html__('%1$s : Never Initiated',
-                        'event_espresso'), ucwords(str_replace('_', ' ', $reg_step))) . '</li>';
-            }
-        }
-        $reg_steps .= '</ul>';
-        $this->_template_args['txn_details']['reg_steps']['value'] = $reg_steps;
-        $this->_template_args['txn_details']['reg_steps']['label'] = esc_html__('Registration Step Progress',
-            'event_espresso');
-
-
-        $this->_get_registrations_to_apply_payment_to();
-        $this->_get_payment_methods($payments);
-        $this->_get_payment_status_array();
-        $this->_get_reg_status_selection(); //sets up the template args for the reg status array for the transaction.
-
-        $this->_template_args['transaction_form_url']    = add_query_arg(array(
-            'action'  => 'edit_transaction',
-            'process' => 'transaction'
-        ), TXN_ADMIN_URL);
-        $this->_template_args['apply_payment_form_url']  = add_query_arg(array(
-            'page'   => 'espresso_transactions',
-            'action' => 'espresso_apply_payment'
-        ), WP_AJAX_URL);
-        $this->_template_args['delete_payment_form_url'] = add_query_arg(array(
-            'page'   => 'espresso_transactions',
-            'action' => 'espresso_delete_payment'
-        ), WP_AJAX_URL);
-
-        // 'espresso_delete_payment_nonce'
-
-        $template_path = TXN_TEMPLATE_PATH . 'txn_admin_details_main_meta_box_txn_details.template.php';
-        echo EEH_Template::display_template($template_path, $this->_template_args, true);
-
-    }
-
-
-    /**
-     * _get_registration_payment_IDs
-     *
-     *    generates an array of Payment IDs and their corresponding Registration IDs
-     *
-     * @access protected
-     *
-     * @param EE_Payment[] $payments
-     *
-     * @return array
-     */
-    protected function _get_registration_payment_IDs($payments = array())
-    {
-        $existing_reg_payments = array();
-        // get all reg payments for these payments
-        $reg_payments = EEM_Registration_Payment::instance()->get_all(array(
-            array(
-                'PAY_ID' => array(
-                    'IN',
-                    array_keys($payments)
-                )
-            )
-        ));
-        if ( ! empty($reg_payments)) {
-            foreach ($payments as $payment) {
-                if ( ! $payment instanceof EE_Payment) {
-                    continue;
-                } else if ( ! isset($existing_reg_payments[$payment->ID()])) {
-                    $existing_reg_payments[$payment->ID()] = array();
-                }
-                foreach ($reg_payments as $reg_payment) {
-                    if ($reg_payment instanceof EE_Registration_Payment && $reg_payment->payment_ID() === $payment->ID()) {
-                        $existing_reg_payments[$payment->ID()][] = $reg_payment->registration_ID();
-                    }
-                }
-            }
-        }
-
-        return $existing_reg_payments;
-    }
-
-
-    /**
-     * _get_registrations_to_apply_payment_to
-     *    generates HTML for displaying a series of checkboxes in the admin payment modal window
-     * which allows the admin to only apply the payment to the specific registrations
-     *
-     * @access protected
-     * @return void
-     * @throws \EE_Error
-     */
-    protected function _get_registrations_to_apply_payment_to()
-    {
-        // we want any registration with an active status (ie: not deleted or cancelled)
-        $query_params                      = array(
-            array(
-                'STS_ID' => array(
-                    'IN',
-                    array(
-                        EEM_Registration::status_id_approved,
-                        EEM_Registration::status_id_pending_payment,
-                        EEM_Registration::status_id_not_approved,
-                    )
-                )
-            )
-        );
-        $registrations_to_apply_payment_to = EEH_HTML::br() . EEH_HTML::div(
-                '', 'txn-admin-apply-payment-to-registrations-dv', '', 'clear: both; margin: 1.5em 0 0; display: none;'
-            );
-        $registrations_to_apply_payment_to .= EEH_HTML::br() . EEH_HTML::div('', '', 'admin-primary-mbox-tbl-wrap');
-        $registrations_to_apply_payment_to .= EEH_HTML::table('', '', 'admin-primary-mbox-tbl');
-        $registrations_to_apply_payment_to .= EEH_HTML::thead(
-            EEH_HTML::tr(
-                EEH_HTML::th(esc_html__('ID', 'event_espresso')) .
-                EEH_HTML::th(esc_html__('Registrant', 'event_espresso')) .
-                EEH_HTML::th(esc_html__('Ticket', 'event_espresso')) .
-                EEH_HTML::th(esc_html__('Event', 'event_espresso')) .
-                EEH_HTML::th(esc_html__('Paid', 'event_espresso'), '', 'txn-admin-payment-paid-td jst-cntr') .
-                EEH_HTML::th(esc_html__('Owing', 'event_espresso'), '', 'txn-admin-payment-owing-td jst-cntr') .
-                EEH_HTML::th(esc_html__('Apply', 'event_espresso'), '', 'jst-cntr')
-            )
-        );
-        $registrations_to_apply_payment_to .= EEH_HTML::tbody();
-        // get registrations for TXN
-        $registrations = $this->_transaction->registrations($query_params);
-        foreach ($registrations as $registration) {
-            if ($registration instanceof EE_Registration) {
-                $attendee_name = $registration->attendee() instanceof EE_Attendee
-                    ? $registration->attendee()->full_name()
-                    : esc_html__('Unknown Attendee', 'event_espresso');
-                $owing         = $registration->final_price() - $registration->paid();
-                $taxable       = $registration->ticket()->taxable()
-                    ? ' <span class="smaller-text lt-grey-text"> ' . esc_html__('+ tax', 'event_espresso') . '</span>'
-                    : '';
-                $checked       = empty($existing_reg_payments) || in_array($registration->ID(), $existing_reg_payments)
-                    ? ' checked="checked"'
-                    : '';
-                $disabled      = $registration->final_price() > 0 ? '' : ' disabled';
-                $registrations_to_apply_payment_to .= EEH_HTML::tr(
-                    EEH_HTML::td($registration->ID()) .
-                    EEH_HTML::td($attendee_name) .
-                    EEH_HTML::td(
-                        $registration->ticket()->name() . ' : ' . $registration->ticket()->pretty_price() . $taxable
-                    ) .
-                    EEH_HTML::td($registration->event_name()) .
-                    EEH_HTML::td($registration->pretty_paid(), '', 'txn-admin-payment-paid-td jst-cntr') .
-                    EEH_HTML::td(EEH_Template::format_currency($owing), '', 'txn-admin-payment-owing-td jst-cntr') .
-                    EEH_HTML::td(
-                        '<input type="checkbox" value="' . $registration->ID()
-                        . '" name="txn_admin_payment[registrations]"'
-                        . $checked . $disabled . '>',
-                        '', 'jst-cntr'
-                    ),
-                    'apply-payment-registration-row-' . $registration->ID()
-                );
-            }
-        }
-        $registrations_to_apply_payment_to .= EEH_HTML::tbodyx();
-        $registrations_to_apply_payment_to .= EEH_HTML::tablex();
-        $registrations_to_apply_payment_to .= EEH_HTML::divx();
-        $registrations_to_apply_payment_to .= EEH_HTML::p(
-            esc_html__(
-                'The payment will only be applied to the registrations that have a check mark in their corresponding check box. Checkboxes for free registrations have been disabled.',
-                'event_espresso'
-            ),
-            '', 'clear description'
-        );
-        $registrations_to_apply_payment_to .= EEH_HTML::divx();
-        $this->_template_args['registrations_to_apply_payment_to'] = $registrations_to_apply_payment_to;
-    }
-
-
-    /**
-     * _get_reg_status_selection
-     *
-     * @todo   this will need to be adjusted either once MER comes along OR we move default reg status to tickets
-     *         instead of events.
-     * @access protected
-     * @return void
-     */
-    protected function _get_reg_status_selection()
-    {
-        //first get all possible statuses
-        $statuses = EEM_Registration::reg_status_array(array(), true);
-        //let's add a "don't change" option.
-        $status_array['NAN']                                 = esc_html__('Leave the Same', 'event_espresso');
-        $status_array                                        = array_merge($status_array, $statuses);
-        $this->_template_args['status_change_select']        = EEH_Form_Fields::select_input('txn_reg_status_change[reg_status]',
-            $status_array, 'NAN', 'id="txn-admin-payment-reg-status-inp"', 'txn-reg-status-change-reg-status');
-        $this->_template_args['delete_status_change_select'] = EEH_Form_Fields::select_input('delete_txn_reg_status_change[reg_status]',
-            $status_array, 'NAN', 'delete-txn-admin-payment-reg-status-inp', 'delete-txn-reg-status-change-reg-status');
-
-    }
-
-
-    /**
-     *    _get_payment_methods
-     * Gets all the payment methods available generally, or the ones that are already
-     * selected on these payments (in case their payment methods are no longer active).
-     * Has the side-effect of updating the template args' payment_methods item
-     * @access private
-     *
-     * @param EE_Payment[] to show on this page
-     *
-     * @return void
-     */
-    private function _get_payment_methods($payments = array())
-    {
-        $payment_methods_of_payments = array();
-        foreach ($payments as $payment) {
-            if ($payment instanceof EE_Payment) {
-                $payment_methods_of_payments[] = $payment->get('PMD_ID');
-            }
-        }
-        if ($payment_methods_of_payments) {
-            $query_args = array(
-                array(
-                    'OR*payment_method_for_payment' => array(
-                        'PMD_ID'    => array('IN', $payment_methods_of_payments),
-                        'PMD_scope' => array('LIKE', '%' . EEM_Payment_Method::scope_admin . '%')
-                    )
-                )
-            );
-        } else {
-            $query_args = array(array('PMD_scope' => array('LIKE', '%' . EEM_Payment_Method::scope_admin . '%')));
-        }
-        $this->_template_args['payment_methods'] = EEM_Payment_Method::instance()->get_all($query_args);
-    }
-
-
-    /**
-     * txn_attendees_meta_box
-     *    generates HTML for the Attendees Transaction main meta box
-     *
-     * @access public
-     *
-     * @param WP_Post $post
-     * @param array   $metabox
-     *
-     * @return void
-     */
-    public function txn_attendees_meta_box($post, $metabox = array('args' => array()))
-    {
-
-        extract($metabox['args']);
-        $this->_template_args['post']            = $post;
-        $this->_template_args['event_attendees'] = array();
-        // process items in cart
-        $line_items = $this->_transaction->get_many_related('Line_Item', array(array('LIN_type' => 'line-item')));
-        if ( ! empty($line_items)) {
-            foreach ($line_items as $item) {
-                if ($item instanceof EE_Line_Item) {
-                    switch ($item->OBJ_type()) {
-
-                        case 'Event' :
-                            break;
-
-                        case 'Ticket' :
-                            $ticket = $item->ticket();
-                            //right now we're only handling tickets here.  Cause its expected that only tickets will have attendees right?
-                            if ( ! $ticket instanceof EE_Ticket) {
-                                continue;
-                            }
-                            try {
-                                $event_name = $ticket->get_event_name();
-                            } catch (Exception $e) {
-                                EE_Error::add_error($e->getMessage(), __FILE__, __FUNCTION__, __LINE__);
-                                $event_name = esc_html__('Unknown Event', 'event_espresso');
-                            }
-                            $event_name .= ' - ' . $item->get('LIN_name');
-                            $ticket_price = EEH_Template::format_currency($item->get('LIN_unit_price'));
-                            // now get all of the registrations for this transaction that use this ticket
-                            $registrations = $ticket->get_many_related('Registration',
-                                array(array('TXN_ID' => $this->_transaction->ID())));
-                            foreach ($registrations as $registration) {
-                                if ( ! $registration instanceof EE_Registration) {
-                                    continue;
-                                }
-                                $this->_template_args['event_attendees'][$registration->ID()]['STS_ID']            = $registration->status_ID();
-                                $this->_template_args['event_attendees'][$registration->ID()]['att_num']           = $registration->count();
-                                $this->_template_args['event_attendees'][$registration->ID()]['event_ticket_name'] = $event_name;
-                                $this->_template_args['event_attendees'][$registration->ID()]['ticket_price']      = $ticket_price;
-                                // attendee info
-                                $attendee = $registration->get_first_related('Attendee');
-                                if ($attendee instanceof EE_Attendee) {
-                                    $this->_template_args['event_attendees'][$registration->ID()]['att_id']   = $attendee->ID();
-                                    $this->_template_args['event_attendees'][$registration->ID()]['attendee'] = $attendee->full_name();
-                                    $this->_template_args['event_attendees'][$registration->ID()]['email']    = '<a href="mailto:' . $attendee->email() . '?subject=' . $event_name . esc_html__(' Event',
-                                            'event_espresso') . '">' . $attendee->email() . '</a>';
-                                    $this->_template_args['event_attendees'][$registration->ID()]['address']  = EEH_Address::format($attendee,
-                                        'inline', false, false);
-                                } else {
-                                    $this->_template_args['event_attendees'][$registration->ID()]['att_id']   = '';
-                                    $this->_template_args['event_attendees'][$registration->ID()]['attendee'] = '';
-                                    $this->_template_args['event_attendees'][$registration->ID()]['email']    = '';
-                                    $this->_template_args['event_attendees'][$registration->ID()]['address']  = '';
-                                }
-                            }
-                            break;
-
-                    }
-                }
-            }
-
-            $this->_template_args['transaction_form_url'] = add_query_arg(array(
-                'action'  => 'edit_transaction',
-                'process' => 'attendees'
-            ), TXN_ADMIN_URL);
-            echo EEH_Template::display_template(TXN_TEMPLATE_PATH . 'txn_admin_details_main_meta_box_attendees.template.php',
-                $this->_template_args, true);
-
-        } else {
-            echo sprintf(
-                esc_html__('%1$sFor some reason, there are no attendees registered for this transaction. Likely the registration was abandoned in process.%2$s',
-                    'event_espresso'),
-                '<p class="important-notice">',
-                '</p>'
-            );
-        }
-    }
-
-
-    /**
-     * txn_registrant_side_meta_box
-     * generates HTML for the Edit Transaction side meta box
-     *
-     * @access public
-     * @throws \EE_Error
-     * @return void
-     */
-    public function txn_registrant_side_meta_box()
-    {
-        $primary_att = $this->_transaction->primary_registration() instanceof EE_Registration ? $this->_transaction->primary_registration()->get_first_related('Attendee') : null;
-        if ( ! $primary_att instanceof EE_Attendee) {
-            $this->_template_args['no_attendee_message'] = esc_html__('There is no attached contact for this transaction.  The transaction either failed due to an error or was abandoned.',
-                'event_espresso');
-            $primary_att                                 = EEM_Attendee::instance()->create_default_object();
-        }
-        $this->_template_args['ATT_ID']            = $primary_att->ID();
-        $this->_template_args['prime_reg_fname']   = $primary_att->fname();
-        $this->_template_args['prime_reg_lname']   = $primary_att->lname();
-        $this->_template_args['prime_reg_email']   = $primary_att->email();
-        $this->_template_args['prime_reg_phone']   = $primary_att->phone();
-        $this->_template_args['edit_attendee_url'] = EE_Admin_Page::add_query_args_and_nonce(array(
-            'action' => 'edit_attendee',
-            'post'   => $primary_att->ID()
-        ), REG_ADMIN_URL);
-        // get formatted address for registrant
-        $this->_template_args['formatted_address'] = EEH_Address::format($primary_att);
-        echo EEH_Template::display_template(TXN_TEMPLATE_PATH . 'txn_admin_details_side_meta_box_registrant.template.php',
-            $this->_template_args, true);
-    }
-
-
-    /**
-     * txn_billing_info_side_meta_box
-     *    generates HTML for the Edit Transaction side meta box
-     *
-     * @access public
-     * @return void
-     */
-    public function txn_billing_info_side_meta_box()
-    {
-
-        $this->_template_args['billing_form']     = $this->_transaction->billing_info();
-        $this->_template_args['billing_form_url'] = add_query_arg(
-            array('action' => 'edit_transaction', 'process' => 'billing'),
-            TXN_ADMIN_URL
-        );
-
-        $template_path = TXN_TEMPLATE_PATH . 'txn_admin_details_side_meta_box_billing_info.template.php';
-        echo EEH_Template::display_template($template_path, $this->_template_args, true);/**/
-    }
-
-
-    /**
-     * apply_payments_or_refunds
-     *    registers a payment or refund made towards a transaction
-     *
-     * @access public
-     * @return void
-     */
-    public function apply_payments_or_refunds()
-    {
-        $json_response_data = array('return_data' => false);
-        $valid_data         = $this->_validate_payment_request_data();
-        if ( ! empty($valid_data)) {
-            $PAY_ID = $valid_data['PAY_ID'];
-            //save  the new payment
-            $payment = $this->_create_payment_from_request_data($valid_data);
-            // get the TXN for this payment
-            $transaction = $payment->transaction();
-            // verify transaction
-            if ($transaction instanceof EE_Transaction) {
-                // calculate_total_payments_and_update_status
-                $this->_process_transaction_payments($transaction);
-                $REG_IDs = $this->_get_REG_IDs_to_apply_payment_to($payment);
-                $this->_remove_existing_registration_payments($payment, $PAY_ID);
-                // apply payment to registrations (if applicable)
-                if ( ! empty($REG_IDs)) {
-                    $this->_update_registration_payments($transaction, $payment, $REG_IDs);
-                    $this->_maybe_send_notifications();
-                    // now process status changes for the same registrations
-                    $this->_process_registration_status_change($transaction, $REG_IDs);
-                }
-                $this->_maybe_send_notifications($payment);
-                //prepare to render page
-                $json_response_data['return_data'] = $this->_build_payment_json_response($payment, $REG_IDs);
-                do_action('AHEE__Transactions_Admin_Page__apply_payments_or_refund__after_recording', $transaction,
-                    $payment);
-            } else {
-                EE_Error::add_error(
-                    esc_html__('A valid Transaction for this payment could not be retrieved.', 'event_espresso'),
-                    __FILE__, __FUNCTION__, __LINE__
-                );
-            }
-        } else {
-            EE_Error::add_error(esc_html__('The payment form data could not be processed. Please try again.',
-                'event_espresso'), __FILE__, __FUNCTION__, __LINE__);
-        }
-
-        $notices              = EE_Error::get_notices(false, false, false);
-        $this->_template_args = array(
-            'data'    => $json_response_data,
-            'error'   => $notices['errors'],
-            'success' => $notices['success']
-        );
-        $this->_return_json();
-    }
-
-
-    /**
-     * _validate_payment_request_data
-     *
-     * @return array
-     */
-    protected function _validate_payment_request_data()
-    {
-        if ( ! isset($this->_req_data['txn_admin_payment'])) {
-            return false;
-        }
-        $payment_form = $this->_generate_payment_form_section();
-        try {
-            if ($payment_form->was_submitted()) {
-                $payment_form->receive_form_submission();
-                if ( ! $payment_form->is_valid()) {
-                    $submission_error_messages = array();
-                    foreach ($payment_form->get_validation_errors_accumulated() as $validation_error) {
-                        if ($validation_error instanceof EE_Validation_Error) {
-                            $submission_error_messages[] = sprintf(
-                                _x('%s : %s', 'Form Section Name : Form Validation Error', 'event_espresso'),
-                                $validation_error->get_form_section()->html_label_text(),
-                                $validation_error->getMessage()
-                            );
-                        }
-                    }
-                    EE_Error::add_error(join('<br />', $submission_error_messages), __FILE__, __FUNCTION__, __LINE__);
-
-                    return array();
-                }
-            }
-        } catch (EE_Error $e) {
-            EE_Error::add_error($e->getMessage(), __FILE__, __FUNCTION__, __LINE__);
-
-            return array();
-        }
-
-        return $payment_form->valid_data();
-    }
-
-
-    /**
-     * _generate_payment_form_section
-     *
-     * @return EE_Form_Section_Proper
-     */
-    protected function _generate_payment_form_section()
-    {
-        return new EE_Form_Section_Proper(
-            array(
-                'name'        => 'txn_admin_payment',
-                'subsections' => array(
-                    'PAY_ID'          => new EE_Text_Input(
-                        array(
-                            'default'               => 0,
-                            'required'              => false,
-                            'html_label_text'       => esc_html__('Payment ID', 'event_espresso'),
-                            'validation_strategies' => array(new EE_Int_Normalization())
-                        )
-                    ),
-                    'TXN_ID'          => new EE_Text_Input(
-                        array(
-                            'default'               => 0,
-                            'required'              => true,
-                            'html_label_text'       => esc_html__('Transaction ID', 'event_espresso'),
-                            'validation_strategies' => array(new EE_Int_Normalization())
-                        )
-                    ),
-                    'type'            => new EE_Text_Input(
-                        array(
-                            'default'               => 1,
-                            'required'              => true,
-                            'html_label_text'       => esc_html__('Payment or Refund', 'event_espresso'),
-                            'validation_strategies' => array(new EE_Int_Normalization())
-                        )
-                    ),
-                    'amount'          => new EE_Text_Input(
-                        array(
-                            'default'               => 0,
-                            'required'              => true,
-                            'html_label_text'       => esc_html__('Payment amount', 'event_espresso'),
-                            'validation_strategies' => array(new EE_Float_Normalization())
-                        )
-                    ),
-                    'status'          => new EE_Text_Input(
-                        array(
-                            'default'         => EEM_Payment::status_id_approved,
-                            'required'        => true,
-                            'html_label_text' => esc_html__('Payment status', 'event_espresso'),
-                        )
-                    ),
-                    'PMD_ID'          => new EE_Text_Input(
-                        array(
-                            'default'               => 2,
-                            'required'              => true,
-                            'html_label_text'       => esc_html__('Payment Method', 'event_espresso'),
-                            'validation_strategies' => array(new EE_Int_Normalization())
-                        )
-                    ),
-                    'date'            => new EE_Text_Input(
-                        array(
-                            'default'         => time(),
-                            'required'        => true,
-                            'html_label_text' => esc_html__('Payment date', 'event_espresso'),
-                        )
-                    ),
-                    'txn_id_chq_nmbr' => new EE_Text_Input(
-                        array(
-                            'default'               => '',
-                            'required'              => false,
-                            'html_label_text'       => esc_html__('Transaction or Cheque Number', 'event_espresso'),
-                            'validation_strategies' => array(
-                                new EE_Max_Length_Validation_Strategy(esc_html__('Input too long', 'event_espresso'),
-                                    100),
-                            )
-                        )
-                    ),
-                    'po_number'       => new EE_Text_Input(
-                        array(
-                            'default'               => '',
-                            'required'              => false,
-                            'html_label_text'       => esc_html__('Purchase Order Number', 'event_espresso'),
-                            'validation_strategies' => array(
-                                new EE_Max_Length_Validation_Strategy(esc_html__('Input too long', 'event_espresso'),
-                                    100),
-                            )
-                        )
-                    ),
-                    'accounting'      => new EE_Text_Input(
-                        array(
-                            'default'               => '',
-                            'required'              => false,
-                            'html_label_text'       => esc_html__('Extra Field for Accounting', 'event_espresso'),
-                            'validation_strategies' => array(
-                                new EE_Max_Length_Validation_Strategy(esc_html__('Input too long', 'event_espresso'),
-                                    100),
-                            )
-                        )
-                    ),
-                )
-            )
-        );
-    }
-
-
-    /**
-     * _create_payment_from_request_data
-     *
-     * @param array $valid_data
-     *
-     * @return EE_Payment
-     */
-    protected function _create_payment_from_request_data($valid_data)
-    {
-        $PAY_ID = $valid_data['PAY_ID'];
-        // get payment amount
-        $amount = $valid_data['amount'] ? abs($valid_data['amount']) : 0;
-        // payments have a type value of 1 and refunds have a type value of -1
-        // so multiplying amount by type will give a positive value for payments, and negative values for refunds
-        $amount = $valid_data['type'] < 0 ? $amount * -1 : $amount;
-        // for some reason the date string coming in has extra spaces between the date and time.  This fixes that.
-        $date    = $valid_data['date'] ? preg_replace('/\s+/', ' ', $valid_data['date']) : date('Y-m-d g:i a',
-            current_time('timestamp'));
-        $payment = EE_Payment::new_instance(
-            array(
-                'TXN_ID'              => $valid_data['TXN_ID'],
-                'STS_ID'              => $valid_data['status'],
-                'PAY_timestamp'       => $date,
-                'PAY_source'          => EEM_Payment_Method::scope_admin,
-                'PMD_ID'              => $valid_data['PMD_ID'],
-                'PAY_amount'          => $amount,
-                'PAY_txn_id_chq_nmbr' => $valid_data['txn_id_chq_nmbr'],
-                'PAY_po_number'       => $valid_data['po_number'],
-                'PAY_extra_accntng'   => $valid_data['accounting'],
-                'PAY_details'         => $valid_data,
-                'PAY_ID'              => $PAY_ID
-            ),
-            '',
-            array('Y-m-d', 'g:i a')
-        );
-
-        if ( ! $payment->save()) {
-            EE_Error::add_error(
-                sprintf(
-                    esc_html__('Payment %1$d has not been successfully saved to the database.', 'event_espresso'),
-                    $payment->ID()
-                ),
-                __FILE__, __FUNCTION__, __LINE__
-            );
-        }
-
-        return $payment;
-    }
-
-
-    /**
-     * _process_transaction_payments
-     *
-     * @param \EE_Transaction $transaction
-     *
-     * @return array
-     */
-    protected function _process_transaction_payments(EE_Transaction $transaction)
-    {
-        /** @type EE_Transaction_Payments $transaction_payments */
-        $transaction_payments = EE_Registry::instance()->load_class('Transaction_Payments');
-        //update the transaction with this payment
-        if ($transaction_payments->calculate_total_payments_and_update_status($transaction)) {
-            EE_Error::add_success(esc_html__('The payment has been processed successfully.', 'event_espresso'),
-                __FILE__, __FUNCTION__, __LINE__);
-        } else {
-            EE_Error::add_error(
-                esc_html__('The payment was processed successfully but the amount paid for the transaction was not updated.',
-                    'event_espresso')
-                , __FILE__, __FUNCTION__, __LINE__
-            );
-        }
-    }
-
-
-    /**
-     * _get_REG_IDs_to_apply_payment_to
-     *
-     * returns a list of registration IDs that the payment will apply to
-     *
-     * @param \EE_Payment $payment
-     *
-     * @return array
-     */
-    protected function _get_REG_IDs_to_apply_payment_to(EE_Payment $payment)
-    {
-        $REG_IDs = array();
-        // grab array of IDs for specific registrations to apply changes to
-        if (isset($this->_req_data['txn_admin_payment']['registrations'])) {
-            $REG_IDs = (array)$this->_req_data['txn_admin_payment']['registrations'];
-        }
-        //nothing specified ? then get all reg IDs
-        if (empty($REG_IDs)) {
-            $registrations = $payment->transaction()->registrations();
-            $REG_IDs       = ! empty($registrations) ? array_keys($registrations) : $this->_get_existing_reg_payment_REG_IDs($payment);
-        }
-
-        // ensure that REG_IDs are integers and NOT strings
-        return array_map('intval', $REG_IDs);
-    }
-
-
-    /**
-     * @return array
-     */
-    public function existing_reg_payment_REG_IDs()
-    {
-        return $this->_existing_reg_payment_REG_IDs;
-    }
-
-
-    /**
-     * @param array $existing_reg_payment_REG_IDs
-     */
-    public function set_existing_reg_payment_REG_IDs($existing_reg_payment_REG_IDs = null)
-    {
-        $this->_existing_reg_payment_REG_IDs = $existing_reg_payment_REG_IDs;
-    }
-
-
-    /**
-     * _get_existing_reg_payment_REG_IDs
-     *
-     * returns a list of registration IDs that the payment is currently related to
-     * as recorded in the database
-     *
-     * @param \EE_Payment $payment
-     *
-     * @return array
-     */
-    protected function _get_existing_reg_payment_REG_IDs(EE_Payment $payment)
-    {
-        if ($this->existing_reg_payment_REG_IDs() === null) {
-            // let's get any existing reg payment records for this payment
-            $existing_reg_payment_REG_IDs = $payment->get_many_related('Registration');
-            // but we only want the REG IDs, so grab the array keys
-            $existing_reg_payment_REG_IDs = ! empty($existing_reg_payment_REG_IDs) ? array_keys($existing_reg_payment_REG_IDs) : array();
-            $this->set_existing_reg_payment_REG_IDs($existing_reg_payment_REG_IDs);
-        }
-
-        return $this->existing_reg_payment_REG_IDs();
-    }
-
-
-    /**
-     * _remove_existing_registration_payments
-     *
-     * this calculates the difference between existing relations
-     * to the supplied payment and the new list registration IDs,
-     * removes any related registrations that no longer apply,
-     * and then updates the registration paid fields
-     *
-     * @param \EE_Payment $payment
-     * @param int         $PAY_ID
-     *
-     * @return bool;
-     */
-    protected function _remove_existing_registration_payments(EE_Payment $payment, $PAY_ID = 0)
-    {
-        // newly created payments will have nothing recorded for $PAY_ID
-        if ($PAY_ID == 0) {
-            return false;
-        }
-        $existing_reg_payment_REG_IDs = $this->_get_existing_reg_payment_REG_IDs($payment);
-        if (empty($existing_reg_payment_REG_IDs)) {
-            return false;
-        }
-        /** @type EE_Transaction_Payments $transaction_payments */
-        $transaction_payments = EE_Registry::instance()->load_class('Transaction_Payments');
-
-        return $transaction_payments->delete_registration_payments_and_update_registrations(
-            $payment,
-            array(
-                array(
-                    'PAY_ID' => $payment->ID(),
-                    'REG_ID' => array('IN', $existing_reg_payment_REG_IDs),
-                )
-            )
-        );
-    }
-
-
-    /**
-     * _update_registration_payments
-     *
-     * this applies the payments to the selected registrations
-     * but only if they have not already been paid for
-     *
-     * @param  EE_Transaction $transaction
-     * @param \EE_Payment     $payment
-     * @param array           $REG_IDs
-     *
-     * @return bool
-     */
-    protected function _update_registration_payments(
-        EE_Transaction $transaction,
-        EE_Payment $payment,
-        $REG_IDs = array()
-    ) {
-        // we can pass our own custom set of registrations to EE_Payment_Processor::process_registration_payments()
-        // so let's do that using our set of REG_IDs from the form
-        $registration_query_where_params = array(
-            'REG_ID' => array('IN', $REG_IDs)
-        );
-        // but add in some conditions regarding payment,
-        // so that we don't apply payments to registrations that are free or have already been paid for
-        // but ONLY if the payment is NOT a refund ( ie: the payment amount is not negative )
-        if ( ! $payment->is_a_refund()) {
-            $registration_query_where_params['REG_final_price']  = array('!=', 0);
-            $registration_query_where_params['REG_final_price*'] = array('!=', 'REG_paid', true);
-        }
-        //EEH_Debug_Tools::printr( $registration_query_where_params, '$registration_query_where_params', __FILE__, __LINE__ );
-        $registrations = $transaction->registrations(array($registration_query_where_params));
-        if ( ! empty($registrations)) {
-            /** @type EE_Payment_Processor $payment_processor */
-            $payment_processor = EE_Registry::instance()->load_core('Payment_Processor');
-            $payment_processor->process_registration_payments($transaction, $payment, $registrations);
-        }
-    }
-
-
-    /**
-     * _process_registration_status_change
-     *
-     * This processes requested registration status changes for all the registrations
-     * on a given transaction and (optionally) sends out notifications for the changes.
-     *
-     * @param  EE_Transaction $transaction
-     * @param array           $REG_IDs
-     *
-     * @return bool
-     */
-    protected function _process_registration_status_change(EE_Transaction $transaction, $REG_IDs = array())
-    {
-        // first if there is no change in status then we get out.
-        if (
-            ! isset($this->_req_data['txn_reg_status_change'], $this->_req_data['txn_reg_status_change']['reg_status'])
-            || $this->_req_data['txn_reg_status_change']['reg_status'] == 'NAN'
-        ) {
-            //no error message, no change requested, just nothing to do man.
-            return false;
-        }
-        /** @type EE_Transaction_Processor $transaction_processor */
-        $transaction_processor = EE_Registry::instance()->load_class('Transaction_Processor');
-
-        // made it here dude?  Oh WOW.  K, let's take care of changing the statuses
-        return $transaction_processor->manually_update_registration_statuses(
-            $transaction,
-            sanitize_text_field($this->_req_data['txn_reg_status_change']['reg_status']),
-            array(array('REG_ID' => array('IN', $REG_IDs)))
-        );
-    }
-
-
-    /**
-     * _build_payment_json_response
-     *
-     * @access public
-     *
-     * @param \EE_Payment $payment
-     * @param array       $REG_IDs
-     * @param bool | null $delete_txn_reg_status_change
-     *
-     * @return array
-     */
-    protected function _build_payment_json_response(
-        EE_Payment $payment,
-        $REG_IDs = array(),
-        $delete_txn_reg_status_change = null
-    ) {
-        // was the payment deleted ?
-        if (is_bool($delete_txn_reg_status_change)) {
-            return array(
-                'PAY_ID'                       => $payment->ID(),
-                'amount'                       => $payment->amount(),
-                'total_paid'                   => $payment->transaction()->paid(),
-                'txn_status'                   => $payment->transaction()->status_ID(),
-                'pay_status'                   => $payment->STS_ID(),
-                'registrations'                => $this->_registration_payment_data_array($REG_IDs),
-                'delete_txn_reg_status_change' => $delete_txn_reg_status_change,
-            );
-        } else {
-            $this->_get_payment_status_array();
-
-            return array(
-                'amount'           => $payment->amount(),
-                'total_paid'       => $payment->transaction()->paid(),
-                'txn_status'       => $payment->transaction()->status_ID(),
-                'pay_status'       => $payment->STS_ID(),
-                'PAY_ID'           => $payment->ID(),
-                'STS_ID'           => $payment->STS_ID(),
-                'status'           => self::$_pay_status[$payment->STS_ID()],
-                'date'             => $payment->timestamp('Y-m-d', 'h:i a'),
-                'method'           => strtoupper($payment->source()),
-                'PM_ID'            => $payment->payment_method() ? $payment->payment_method()->ID() : 1,
-                'gateway'          => $payment->payment_method() ? $payment->payment_method()->admin_name() : esc_html__("Unknown",
-                    'event_espresso'),
-                'gateway_response' => $payment->gateway_response(),
-                'txn_id_chq_nmbr'  => $payment->txn_id_chq_nmbr(),
-                'po_number'        => $payment->po_number(),
-                'extra_accntng'    => $payment->extra_accntng(),
-                'registrations'    => $this->_registration_payment_data_array($REG_IDs),
-            );
-        }
-    }
-
-
-    /**
-     * delete_payment
-     *    delete a payment or refund made towards a transaction
-     *
-     * @access public
-     * @return void
-     */
-    public function delete_payment()
-    {
-        $json_response_data = array('return_data' => false);
-        $PAY_ID             = isset($this->_req_data['delete_txn_admin_payment'], $this->_req_data['delete_txn_admin_payment']['PAY_ID']) ? absint($this->_req_data['delete_txn_admin_payment']['PAY_ID']) : 0;
-        if ($PAY_ID) {
-            $delete_txn_reg_status_change = isset($this->_req_data['delete_txn_reg_status_change']) ? $this->_req_data['delete_txn_reg_status_change'] : false;
-            $payment                      = EEM_Payment::instance()->get_one_by_ID($PAY_ID);
-            if ($payment instanceof EE_Payment) {
-                $REG_IDs = $this->_get_existing_reg_payment_REG_IDs($payment);
-                /** @type EE_Transaction_Payments $transaction_payments */
-                $transaction_payments = EE_Registry::instance()->load_class('Transaction_Payments');
-                if ($transaction_payments->delete_payment_and_update_transaction($payment)) {
-                    $json_response_data['return_data'] = $this->_build_payment_json_response($payment, $REG_IDs,
-                        $delete_txn_reg_status_change);
-                    if ($delete_txn_reg_status_change) {
-                        $this->_req_data['txn_reg_status_change'] = $delete_txn_reg_status_change;
-                        //MAKE sure we also add the delete_txn_req_status_change to the
-                        //$_REQUEST global because that's how messages will be looking for it.
-                        $_REQUEST['txn_reg_status_change'] = $delete_txn_reg_status_change;
-                        $this->_maybe_send_notifications();
-                        $this->_process_registration_status_change($payment->transaction(), $REG_IDs);
-                    }
-                }
-            } else {
-                EE_Error::add_error(
-                    esc_html__('Valid Payment data could not be retrieved from the database.', 'event_espresso'),
-                    __FILE__, __FUNCTION__, __LINE__
-                );
-            }
-        } else {
-            EE_Error::add_error(
-                esc_html__('A valid Payment ID was not received, therefore payment form data could not be loaded.',
-                    'event_espresso'),
-                __FILE__, __FUNCTION__, __LINE__
-            );
-        }
-        $notices              = EE_Error::get_notices(false, false, false);
-        $this->_template_args = array(
-            'data'      => $json_response_data,
-            'success'   => $notices['success'],
-            'error'     => $notices['errors'],
-            'attention' => $notices['attention']
-        );
-        $this->_return_json();
-    }
-
-
-    /**
-     * _registration_payment_data_array
-     * adds info for 'owing' and 'paid' for each registration to the json response
-     *
-     * @access protected
-     *
-     * @param array $REG_IDs
-     *
-     * @return array
-     */
-    protected function _registration_payment_data_array($REG_IDs)
-    {
-        $registration_payment_data = array();
-        //if non empty reg_ids lets get an array of registrations and update the values for the apply_payment/refund rows.
-        if ( ! empty($REG_IDs)) {
-            $registrations = EEM_Registration::instance()->get_all(array(array('REG_ID' => array('IN', $REG_IDs))));
-            foreach ($registrations as $registration) {
-                if ($registration instanceof EE_Registration) {
-                    $registration_payment_data[$registration->ID()] = array(
-                        'paid'  => $registration->pretty_paid(),
-                        'owing' => EEH_Template::format_currency($registration->final_price() - $registration->paid()),
-                    );
-                }
-            }
-        }
-
-        return $registration_payment_data;
-    }
-
-
-    /**
-     * _maybe_send_notifications
-     *
-     * determines whether or not the admin has indicated that notifications should be sent.
-     * If so, will toggle a filter switch for delivering registration notices.
-     * If passed an EE_Payment object, then it will trigger payment notifications instead.
-     *
-     * @access protected
-     *
-     * @param \EE_Payment | null $payment
-     */
-    protected function _maybe_send_notifications($payment = null)
-    {
-        switch ($payment instanceof EE_Payment) {
-            // payment notifications
-            case true :
-                if (
-                    isset(
-                        $this->_req_data['txn_payments'],
-                        $this->_req_data['txn_payments']['send_notifications']
-                    ) &&
-                    filter_var($this->_req_data['txn_payments']['send_notifications'], FILTER_VALIDATE_BOOLEAN)
-                ) {
-                    $this->_process_payment_notification($payment);
-                }
-                break;
-            // registration notifications
-            case false :
-                if (
-                    isset(
-                        $this->_req_data['txn_reg_status_change'],
-                        $this->_req_data['txn_reg_status_change']['send_notifications']
-                    ) &&
-                    filter_var($this->_req_data['txn_reg_status_change']['send_notifications'], FILTER_VALIDATE_BOOLEAN)
-                ) {
-                    add_filter('FHEE__EED_Messages___maybe_registration__deliver_notifications', '__return_true');
-                }
-                break;
-        }
-    }
-
-
-    /**
-     * _send_payment_reminder
-     *    generates HTML for the View Transaction Details Admin page
-     *
-     * @access protected
-     * @return void
-     */
-    protected function _send_payment_reminder()
-    {
-        $TXN_ID      = ( ! empty($this->_req_data['TXN_ID'])) ? absint($this->_req_data['TXN_ID']) : false;
-        $transaction = EEM_Transaction::instance()->get_one_by_ID($TXN_ID);
-        $query_args  = isset($this->_req_data['redirect_to']) ? array(
-            'action' => $this->_req_data['redirect_to'],
-            'TXN_ID' => $this->_req_data['TXN_ID']
-        ) : array();
-        do_action('AHEE__Transactions_Admin_Page___send_payment_reminder__process_admin_payment_reminder',
-            $transaction);
-        $this->_redirect_after_action(false, esc_html__('payment reminder', 'event_espresso'),
-            esc_html__('sent', 'event_espresso'), $query_args, true);
-    }
-
-
-    /**
-     *  get_transactions
-     *    get transactions for given parameters (used by list table)
-     *
-     * @param  int     $perpage how many transactions displayed per page
-     * @param  boolean $count   return the count or objects
-     * @param string   $view
-     *
-     * @return mixed int = count || array of transaction objects
-     */
-    public function get_transactions($perpage, $count = false, $view = '')
-    {
-
-        $TXN = EEM_Transaction::instance();
-
-        $start_date = isset($this->_req_data['txn-filter-start-date']) ? wp_strip_all_tags($this->_req_data['txn-filter-start-date']) : date('m/d/Y',
-            strtotime('-10 year'));
-        $end_date   = isset($this->_req_data['txn-filter-end-date']) ? wp_strip_all_tags($this->_req_data['txn-filter-end-date']) : date('m/d/Y');
-
-        //make sure our timestamps start and end right at the boundaries for each day
-        $start_date = date('Y-m-d', strtotime($start_date)) . ' 00:00:00';
-        $end_date   = date('Y-m-d', strtotime($end_date)) . ' 23:59:59';
-
-
-        //convert to timestamps
-        $start_date = strtotime($start_date);
-        $end_date   = strtotime($end_date);
-
-        //makes sure start date is the lowest value and vice versa
-        $start_date = min($start_date, $end_date);
-        $end_date   = max($start_date, $end_date);
-
-        //convert to correct format for query
-        $start_date = EEM_Transaction::instance()->convert_datetime_for_query('TXN_timestamp',
-            date('Y-m-d H:i:s', $start_date), 'Y-m-d H:i:s');
-        $end_date   = EEM_Transaction::instance()->convert_datetime_for_query('TXN_timestamp',
-            date('Y-m-d H:i:s', $end_date), 'Y-m-d H:i:s');
-
-
-        //set orderby
-        $this->_req_data['orderby'] = ! empty($this->_req_data['orderby']) ? $this->_req_data['orderby'] : '';
-
-        switch ($this->_req_data['orderby']) {
-            case 'TXN_ID':
-                $orderby = 'TXN_ID';
-                break;
-            case 'ATT_fname':
-                $orderby = 'Registration.Attendee.ATT_fname';
-                break;
-            case 'event_name':
-                $orderby = 'Registration.Event.EVT_name';
-                break;
-            default: //'TXN_timestamp'
-                $orderby = 'TXN_timestamp';
-        }
-
-        $sort         = (isset($this->_req_data['order']) && ! empty($this->_req_data['order'])) ? $this->_req_data['order'] : 'DESC';
-        $current_page = isset($this->_req_data['paged']) && ! empty($this->_req_data['paged']) ? $this->_req_data['paged'] : 1;
-        $per_page     = isset($perpage) && ! empty($perpage) ? $perpage : 10;
-        $per_page     = isset($this->_req_data['perpage']) && ! empty($this->_req_data['perpage']) ? $this->_req_data['perpage'] : $per_page;
-
-        $offset = ($current_page - 1) * $per_page;
-        $limit  = array($offset, $per_page);
-
-        $_where = array(
-            'TXN_timestamp'          => array('BETWEEN', array($start_date, $end_date)),
-            'Registration.REG_count' => 1
-        );
-
-        if (isset($this->_req_data['EVT_ID'])) {
-            $_where['Registration.EVT_ID'] = $this->_req_data['EVT_ID'];
-        }
-
-        if (isset($this->_req_data['s'])) {
-            $search_string = '%' . $this->_req_data['s'] . '%';
-            $_where['OR']  = array(
-                'Registration.Event.EVT_name'         => array('LIKE', $search_string),
-                'Registration.Event.EVT_desc'         => array('LIKE', $search_string),
-                'Registration.Event.EVT_short_desc'   => array('LIKE', $search_string),
-                'Registration.Attendee.ATT_full_name' => array('LIKE', $search_string),
-                'Registration.Attendee.ATT_fname'     => array('LIKE', $search_string),
-                'Registration.Attendee.ATT_lname'     => array('LIKE', $search_string),
-                'Registration.Attendee.ATT_short_bio' => array('LIKE', $search_string),
-                'Registration.Attendee.ATT_email'     => array('LIKE', $search_string),
-                'Registration.Attendee.ATT_address'   => array('LIKE', $search_string),
-                'Registration.Attendee.ATT_address2'  => array('LIKE', $search_string),
-                'Registration.Attendee.ATT_city'      => array('LIKE', $search_string),
-                'Registration.REG_final_price'        => array('LIKE', $search_string),
-                'Registration.REG_code'               => array('LIKE', $search_string),
-                'Registration.REG_count'              => array('LIKE', $search_string),
-                'Registration.REG_group_size'         => array('LIKE', $search_string),
-                'Registration.Ticket.TKT_name'        => array('LIKE', $search_string),
-                'Registration.Ticket.TKT_description' => array('LIKE', $search_string),
-                'Payment.PAY_source'                  => array('LIKE', $search_string),
-                'Payment.Payment_Method.PMD_name'     => array('LIKE', $search_string),
-                'TXN_session_data'                    => array('LIKE', $search_string),
-                'Payment.PAY_txn_id_chq_nmbr'         => array('LIKE', $search_string)
-            );
-        }
-
-        //failed transactions
-        $failed    = ( ! empty($this->_req_data['status']) && $this->_req_data['status'] == 'failed' && ! $count) || ($count && $view == 'failed') ? true : false;
-        $abandoned = ( ! empty($this->_req_data['status']) && $this->_req_data['status'] == 'abandoned' && ! $count) || ($count && $view == 'abandoned') ? true : false;
-
-        if ($failed) {
-            $_where['STS_ID'] = EEM_Transaction::failed_status_code;
-        } else if ($abandoned) {
-            $_where['STS_ID'] = EEM_Transaction::abandoned_status_code;
-        } else {
-            $_where['STS_ID']  = array('!=', EEM_Transaction::failed_status_code);
-            $_where['STS_ID*'] = array('!=', EEM_Transaction::abandoned_status_code);
-        }
-
-        $query_params = array($_where, 'order_by' => array($orderby => $sort), 'limit' => $limit);
-
-        $transactions = $count ? $TXN->count(array($_where), 'TXN_ID', true) : $TXN->get_all($query_params);
-
-
-        return $transactions;
-
-    }
+		// process payment details
+		$payments = $this->_transaction->get_many_related('Payment');
+		if ( ! empty($payments)) {
+			$this->_template_args['payments']              = $payments;
+			$this->_template_args['existing_reg_payments'] = $this->_get_registration_payment_IDs($payments);
+		} else {
+			$this->_template_args['payments']              = false;
+			$this->_template_args['existing_reg_payments'] = array();
+		}
+
+		$this->_template_args['edit_payment_url']   = add_query_arg(array('action' => 'edit_payment'), TXN_ADMIN_URL);
+		$this->_template_args['delete_payment_url'] = add_query_arg(array('action' => 'espresso_delete_payment'),
+			TXN_ADMIN_URL);
+
+		if (isset($txn_details['invoice_number'])) {
+			$this->_template_args['txn_details']['invoice_number']['value'] = $this->_template_args['REG_code'];
+			$this->_template_args['txn_details']['invoice_number']['label'] = esc_html__('Invoice Number',
+				'event_espresso');
+		}
+
+		$this->_template_args['txn_details']['registration_session']['value'] = $this->_transaction->get_first_related('Registration')->get('REG_session');
+		$this->_template_args['txn_details']['registration_session']['label'] = esc_html__('Registration Session',
+			'event_espresso');
+
+		$this->_template_args['txn_details']['ip_address']['value'] = isset($this->_session['ip_address']) ? $this->_session['ip_address'] : '';
+		$this->_template_args['txn_details']['ip_address']['label'] = esc_html__('Transaction placed from IP',
+			'event_espresso');
+
+		$this->_template_args['txn_details']['user_agent']['value'] = isset($this->_session['user_agent']) ? $this->_session['user_agent'] : '';
+		$this->_template_args['txn_details']['user_agent']['label'] = esc_html__('Registrant User Agent',
+			'event_espresso');
+
+		$reg_steps = '<ul>';
+		foreach ($this->_transaction->reg_steps() as $reg_step => $reg_step_status) {
+			if ($reg_step_status === true) {
+				$reg_steps .= '<li style="color:#70cc50">' . sprintf(esc_html__('%1$s : Completed', 'event_espresso'),
+						ucwords(str_replace('_', ' ', $reg_step))) . '</li>';
+			} else if (is_numeric($reg_step_status) && $reg_step_status !== false) {
+				$reg_steps .= '<li style="color:#2EA2CC">' . sprintf(
+						esc_html__('%1$s : Initiated %2$s', 'event_espresso'),
+						ucwords(str_replace('_', ' ', $reg_step)),
+						date(get_option('date_format') . ' ' . get_option('time_format'),
+							($reg_step_status + (get_option('gmt_offset') * HOUR_IN_SECONDS)))
+					) . '</li>';
+			} else {
+				$reg_steps .= '<li style="color:#E76700">' . sprintf(esc_html__('%1$s : Never Initiated',
+						'event_espresso'), ucwords(str_replace('_', ' ', $reg_step))) . '</li>';
+			}
+		}
+		$reg_steps .= '</ul>';
+		$this->_template_args['txn_details']['reg_steps']['value'] = $reg_steps;
+		$this->_template_args['txn_details']['reg_steps']['label'] = esc_html__('Registration Step Progress',
+			'event_espresso');
+
+
+		$this->_get_registrations_to_apply_payment_to();
+		$this->_get_payment_methods($payments);
+		$this->_get_payment_status_array();
+		$this->_get_reg_status_selection(); //sets up the template args for the reg status array for the transaction.
+
+		$this->_template_args['transaction_form_url']    = add_query_arg(array(
+			'action'  => 'edit_transaction',
+			'process' => 'transaction'
+		), TXN_ADMIN_URL);
+		$this->_template_args['apply_payment_form_url']  = add_query_arg(array(
+			'page'   => 'espresso_transactions',
+			'action' => 'espresso_apply_payment'
+		), WP_AJAX_URL);
+		$this->_template_args['delete_payment_form_url'] = add_query_arg(array(
+			'page'   => 'espresso_transactions',
+			'action' => 'espresso_delete_payment'
+		), WP_AJAX_URL);
+
+		// 'espresso_delete_payment_nonce'
+
+		$template_path = TXN_TEMPLATE_PATH . 'txn_admin_details_main_meta_box_txn_details.template.php';
+		echo EEH_Template::display_template($template_path, $this->_template_args, true);
+
+	}
+
+
+	/**
+	 * _get_registration_payment_IDs
+	 *
+	 *    generates an array of Payment IDs and their corresponding Registration IDs
+	 *
+	 * @access protected
+	 *
+	 * @param EE_Payment[] $payments
+	 *
+	 * @return array
+	 */
+	protected function _get_registration_payment_IDs($payments = array())
+	{
+		$existing_reg_payments = array();
+		// get all reg payments for these payments
+		$reg_payments = EEM_Registration_Payment::instance()->get_all(array(
+			array(
+				'PAY_ID' => array(
+					'IN',
+					array_keys($payments)
+				)
+			)
+		));
+		if ( ! empty($reg_payments)) {
+			foreach ($payments as $payment) {
+				if ( ! $payment instanceof EE_Payment) {
+					continue;
+				} else if ( ! isset($existing_reg_payments[$payment->ID()])) {
+					$existing_reg_payments[$payment->ID()] = array();
+				}
+				foreach ($reg_payments as $reg_payment) {
+					if ($reg_payment instanceof EE_Registration_Payment && $reg_payment->payment_ID() === $payment->ID()) {
+						$existing_reg_payments[$payment->ID()][] = $reg_payment->registration_ID();
+					}
+				}
+			}
+		}
+
+		return $existing_reg_payments;
+	}
+
+
+	/**
+	 * _get_registrations_to_apply_payment_to
+	 *    generates HTML for displaying a series of checkboxes in the admin payment modal window
+	 * which allows the admin to only apply the payment to the specific registrations
+	 *
+	 * @access protected
+	 * @return void
+	 * @throws \EE_Error
+	 */
+	protected function _get_registrations_to_apply_payment_to()
+	{
+		// we want any registration with an active status (ie: not deleted or cancelled)
+		$query_params                      = array(
+			array(
+				'STS_ID' => array(
+					'IN',
+					array(
+						EEM_Registration::status_id_approved,
+						EEM_Registration::status_id_pending_payment,
+						EEM_Registration::status_id_not_approved,
+					)
+				)
+			)
+		);
+		$registrations_to_apply_payment_to = EEH_HTML::br() . EEH_HTML::div(
+				'', 'txn-admin-apply-payment-to-registrations-dv', '', 'clear: both; margin: 1.5em 0 0; display: none;'
+			);
+		$registrations_to_apply_payment_to .= EEH_HTML::br() . EEH_HTML::div('', '', 'admin-primary-mbox-tbl-wrap');
+		$registrations_to_apply_payment_to .= EEH_HTML::table('', '', 'admin-primary-mbox-tbl');
+		$registrations_to_apply_payment_to .= EEH_HTML::thead(
+			EEH_HTML::tr(
+				EEH_HTML::th(esc_html__('ID', 'event_espresso')) .
+				EEH_HTML::th(esc_html__('Registrant', 'event_espresso')) .
+				EEH_HTML::th(esc_html__('Ticket', 'event_espresso')) .
+				EEH_HTML::th(esc_html__('Event', 'event_espresso')) .
+				EEH_HTML::th(esc_html__('Paid', 'event_espresso'), '', 'txn-admin-payment-paid-td jst-cntr') .
+				EEH_HTML::th(esc_html__('Owing', 'event_espresso'), '', 'txn-admin-payment-owing-td jst-cntr') .
+				EEH_HTML::th(esc_html__('Apply', 'event_espresso'), '', 'jst-cntr')
+			)
+		);
+		$registrations_to_apply_payment_to .= EEH_HTML::tbody();
+		// get registrations for TXN
+		$registrations = $this->_transaction->registrations($query_params);
+		foreach ($registrations as $registration) {
+			if ($registration instanceof EE_Registration) {
+				$attendee_name = $registration->attendee() instanceof EE_Attendee
+					? $registration->attendee()->full_name()
+					: esc_html__('Unknown Attendee', 'event_espresso');
+				$owing         = $registration->final_price() - $registration->paid();
+				$taxable       = $registration->ticket()->taxable()
+					? ' <span class="smaller-text lt-grey-text"> ' . esc_html__('+ tax', 'event_espresso') . '</span>'
+					: '';
+				$checked       = empty($existing_reg_payments) || in_array($registration->ID(), $existing_reg_payments)
+					? ' checked="checked"'
+					: '';
+				$disabled      = $registration->final_price() > 0 ? '' : ' disabled';
+				$registrations_to_apply_payment_to .= EEH_HTML::tr(
+					EEH_HTML::td($registration->ID()) .
+					EEH_HTML::td($attendee_name) .
+					EEH_HTML::td(
+						$registration->ticket()->name() . ' : ' . $registration->ticket()->pretty_price() . $taxable
+					) .
+					EEH_HTML::td($registration->event_name()) .
+					EEH_HTML::td($registration->pretty_paid(), '', 'txn-admin-payment-paid-td jst-cntr') .
+					EEH_HTML::td(EEH_Template::format_currency($owing), '', 'txn-admin-payment-owing-td jst-cntr') .
+					EEH_HTML::td(
+						'<input type="checkbox" value="' . $registration->ID()
+						. '" name="txn_admin_payment[registrations]"'
+						. $checked . $disabled . '>',
+						'', 'jst-cntr'
+					),
+					'apply-payment-registration-row-' . $registration->ID()
+				);
+			}
+		}
+		$registrations_to_apply_payment_to .= EEH_HTML::tbodyx();
+		$registrations_to_apply_payment_to .= EEH_HTML::tablex();
+		$registrations_to_apply_payment_to .= EEH_HTML::divx();
+		$registrations_to_apply_payment_to .= EEH_HTML::p(
+			esc_html__(
+				'The payment will only be applied to the registrations that have a check mark in their corresponding check box. Checkboxes for free registrations have been disabled.',
+				'event_espresso'
+			),
+			'', 'clear description'
+		);
+		$registrations_to_apply_payment_to .= EEH_HTML::divx();
+		$this->_template_args['registrations_to_apply_payment_to'] = $registrations_to_apply_payment_to;
+	}
+
+
+	/**
+	 * _get_reg_status_selection
+	 *
+	 * @todo   this will need to be adjusted either once MER comes along OR we move default reg status to tickets
+	 *         instead of events.
+	 * @access protected
+	 * @return void
+	 */
+	protected function _get_reg_status_selection()
+	{
+		//first get all possible statuses
+		$statuses = EEM_Registration::reg_status_array(array(), true);
+		//let's add a "don't change" option.
+		$status_array['NAN']                                 = esc_html__('Leave the Same', 'event_espresso');
+		$status_array                                        = array_merge($status_array, $statuses);
+		$this->_template_args['status_change_select']        = EEH_Form_Fields::select_input('txn_reg_status_change[reg_status]',
+			$status_array, 'NAN', 'id="txn-admin-payment-reg-status-inp"', 'txn-reg-status-change-reg-status');
+		$this->_template_args['delete_status_change_select'] = EEH_Form_Fields::select_input('delete_txn_reg_status_change[reg_status]',
+			$status_array, 'NAN', 'delete-txn-admin-payment-reg-status-inp', 'delete-txn-reg-status-change-reg-status');
+
+	}
+
+
+	/**
+	 *    _get_payment_methods
+	 * Gets all the payment methods available generally, or the ones that are already
+	 * selected on these payments (in case their payment methods are no longer active).
+	 * Has the side-effect of updating the template args' payment_methods item
+	 * @access private
+	 *
+	 * @param EE_Payment[] to show on this page
+	 *
+	 * @return void
+	 */
+	private function _get_payment_methods($payments = array())
+	{
+		$payment_methods_of_payments = array();
+		foreach ($payments as $payment) {
+			if ($payment instanceof EE_Payment) {
+				$payment_methods_of_payments[] = $payment->get('PMD_ID');
+			}
+		}
+		if ($payment_methods_of_payments) {
+			$query_args = array(
+				array(
+					'OR*payment_method_for_payment' => array(
+						'PMD_ID'    => array('IN', $payment_methods_of_payments),
+						'PMD_scope' => array('LIKE', '%' . EEM_Payment_Method::scope_admin . '%')
+					)
+				)
+			);
+		} else {
+			$query_args = array(array('PMD_scope' => array('LIKE', '%' . EEM_Payment_Method::scope_admin . '%')));
+		}
+		$this->_template_args['payment_methods'] = EEM_Payment_Method::instance()->get_all($query_args);
+	}
+
+
+	/**
+	 * txn_attendees_meta_box
+	 *    generates HTML for the Attendees Transaction main meta box
+	 *
+	 * @access public
+	 *
+	 * @param WP_Post $post
+	 * @param array   $metabox
+	 *
+	 * @return void
+	 */
+	public function txn_attendees_meta_box($post, $metabox = array('args' => array()))
+	{
+
+		extract($metabox['args']);
+		$this->_template_args['post']            = $post;
+		$this->_template_args['event_attendees'] = array();
+		// process items in cart
+		$line_items = $this->_transaction->get_many_related('Line_Item', array(array('LIN_type' => 'line-item')));
+		if ( ! empty($line_items)) {
+			foreach ($line_items as $item) {
+				if ($item instanceof EE_Line_Item) {
+					switch ($item->OBJ_type()) {
+
+						case 'Event' :
+							break;
+
+						case 'Ticket' :
+							$ticket = $item->ticket();
+							//right now we're only handling tickets here.  Cause its expected that only tickets will have attendees right?
+							if ( ! $ticket instanceof EE_Ticket) {
+								continue;
+							}
+							try {
+								$event_name = $ticket->get_event_name();
+							} catch (Exception $e) {
+								EE_Error::add_error($e->getMessage(), __FILE__, __FUNCTION__, __LINE__);
+								$event_name = esc_html__('Unknown Event', 'event_espresso');
+							}
+							$event_name .= ' - ' . $item->get('LIN_name');
+							$ticket_price = EEH_Template::format_currency($item->get('LIN_unit_price'));
+							// now get all of the registrations for this transaction that use this ticket
+							$registrations = $ticket->get_many_related('Registration',
+								array(array('TXN_ID' => $this->_transaction->ID())));
+							foreach ($registrations as $registration) {
+								if ( ! $registration instanceof EE_Registration) {
+									continue;
+								}
+								$this->_template_args['event_attendees'][$registration->ID()]['STS_ID']            = $registration->status_ID();
+								$this->_template_args['event_attendees'][$registration->ID()]['att_num']           = $registration->count();
+								$this->_template_args['event_attendees'][$registration->ID()]['event_ticket_name'] = $event_name;
+								$this->_template_args['event_attendees'][$registration->ID()]['ticket_price']      = $ticket_price;
+								// attendee info
+								$attendee = $registration->get_first_related('Attendee');
+								if ($attendee instanceof EE_Attendee) {
+									$this->_template_args['event_attendees'][$registration->ID()]['att_id']   = $attendee->ID();
+									$this->_template_args['event_attendees'][$registration->ID()]['attendee'] = $attendee->full_name();
+									$this->_template_args['event_attendees'][$registration->ID()]['email']    = '<a href="mailto:' . $attendee->email() . '?subject=' . $event_name . esc_html__(' Event',
+											'event_espresso') . '">' . $attendee->email() . '</a>';
+									$this->_template_args['event_attendees'][$registration->ID()]['address']  = EEH_Address::format($attendee,
+										'inline', false, false);
+								} else {
+									$this->_template_args['event_attendees'][$registration->ID()]['att_id']   = '';
+									$this->_template_args['event_attendees'][$registration->ID()]['attendee'] = '';
+									$this->_template_args['event_attendees'][$registration->ID()]['email']    = '';
+									$this->_template_args['event_attendees'][$registration->ID()]['address']  = '';
+								}
+							}
+							break;
+
+					}
+				}
+			}
+
+			$this->_template_args['transaction_form_url'] = add_query_arg(array(
+				'action'  => 'edit_transaction',
+				'process' => 'attendees'
+			), TXN_ADMIN_URL);
+			echo EEH_Template::display_template(TXN_TEMPLATE_PATH . 'txn_admin_details_main_meta_box_attendees.template.php',
+				$this->_template_args, true);
+
+		} else {
+			echo sprintf(
+				esc_html__('%1$sFor some reason, there are no attendees registered for this transaction. Likely the registration was abandoned in process.%2$s',
+					'event_espresso'),
+				'<p class="important-notice">',
+				'</p>'
+			);
+		}
+	}
+
+
+	/**
+	 * txn_registrant_side_meta_box
+	 * generates HTML for the Edit Transaction side meta box
+	 *
+	 * @access public
+	 * @throws \EE_Error
+	 * @return void
+	 */
+	public function txn_registrant_side_meta_box()
+	{
+		$primary_att = $this->_transaction->primary_registration() instanceof EE_Registration ? $this->_transaction->primary_registration()->get_first_related('Attendee') : null;
+		if ( ! $primary_att instanceof EE_Attendee) {
+			$this->_template_args['no_attendee_message'] = esc_html__('There is no attached contact for this transaction.  The transaction either failed due to an error or was abandoned.',
+				'event_espresso');
+			$primary_att                                 = EEM_Attendee::instance()->create_default_object();
+		}
+		$this->_template_args['ATT_ID']            = $primary_att->ID();
+		$this->_template_args['prime_reg_fname']   = $primary_att->fname();
+		$this->_template_args['prime_reg_lname']   = $primary_att->lname();
+		$this->_template_args['prime_reg_email']   = $primary_att->email();
+		$this->_template_args['prime_reg_phone']   = $primary_att->phone();
+		$this->_template_args['edit_attendee_url'] = EE_Admin_Page::add_query_args_and_nonce(array(
+			'action' => 'edit_attendee',
+			'post'   => $primary_att->ID()
+		), REG_ADMIN_URL);
+		// get formatted address for registrant
+		$this->_template_args['formatted_address'] = EEH_Address::format($primary_att);
+		echo EEH_Template::display_template(TXN_TEMPLATE_PATH . 'txn_admin_details_side_meta_box_registrant.template.php',
+			$this->_template_args, true);
+	}
+
+
+	/**
+	 * txn_billing_info_side_meta_box
+	 *    generates HTML for the Edit Transaction side meta box
+	 *
+	 * @access public
+	 * @return void
+	 */
+	public function txn_billing_info_side_meta_box()
+	{
+
+		$this->_template_args['billing_form']     = $this->_transaction->billing_info();
+		$this->_template_args['billing_form_url'] = add_query_arg(
+			array('action' => 'edit_transaction', 'process' => 'billing'),
+			TXN_ADMIN_URL
+		);
+
+		$template_path = TXN_TEMPLATE_PATH . 'txn_admin_details_side_meta_box_billing_info.template.php';
+		echo EEH_Template::display_template($template_path, $this->_template_args, true);/**/
+	}
+
+
+	/**
+	 * apply_payments_or_refunds
+	 *    registers a payment or refund made towards a transaction
+	 *
+	 * @access public
+	 * @return void
+	 */
+	public function apply_payments_or_refunds()
+	{
+		$json_response_data = array('return_data' => false);
+		$valid_data         = $this->_validate_payment_request_data();
+		if ( ! empty($valid_data)) {
+			$PAY_ID = $valid_data['PAY_ID'];
+			//save  the new payment
+			$payment = $this->_create_payment_from_request_data($valid_data);
+			// get the TXN for this payment
+			$transaction = $payment->transaction();
+			// verify transaction
+			if ($transaction instanceof EE_Transaction) {
+				// calculate_total_payments_and_update_status
+				$this->_process_transaction_payments($transaction);
+				$REG_IDs = $this->_get_REG_IDs_to_apply_payment_to($payment);
+				$this->_remove_existing_registration_payments($payment, $PAY_ID);
+				// apply payment to registrations (if applicable)
+				if ( ! empty($REG_IDs)) {
+					$this->_update_registration_payments($transaction, $payment, $REG_IDs);
+					$this->_maybe_send_notifications();
+					// now process status changes for the same registrations
+					$this->_process_registration_status_change($transaction, $REG_IDs);
+				}
+				$this->_maybe_send_notifications($payment);
+				//prepare to render page
+				$json_response_data['return_data'] = $this->_build_payment_json_response($payment, $REG_IDs);
+				do_action('AHEE__Transactions_Admin_Page__apply_payments_or_refund__after_recording', $transaction,
+					$payment);
+			} else {
+				EE_Error::add_error(
+					esc_html__('A valid Transaction for this payment could not be retrieved.', 'event_espresso'),
+					__FILE__, __FUNCTION__, __LINE__
+				);
+			}
+		} else {
+			EE_Error::add_error(esc_html__('The payment form data could not be processed. Please try again.',
+				'event_espresso'), __FILE__, __FUNCTION__, __LINE__);
+		}
+
+		$notices              = EE_Error::get_notices(false, false, false);
+		$this->_template_args = array(
+			'data'    => $json_response_data,
+			'error'   => $notices['errors'],
+			'success' => $notices['success']
+		);
+		$this->_return_json();
+	}
+
+
+	/**
+	 * _validate_payment_request_data
+	 *
+	 * @return array
+	 */
+	protected function _validate_payment_request_data()
+	{
+		if ( ! isset($this->_req_data['txn_admin_payment'])) {
+			return false;
+		}
+		$payment_form = $this->_generate_payment_form_section();
+		try {
+			if ($payment_form->was_submitted()) {
+				$payment_form->receive_form_submission();
+				if ( ! $payment_form->is_valid()) {
+					$submission_error_messages = array();
+					foreach ($payment_form->get_validation_errors_accumulated() as $validation_error) {
+						if ($validation_error instanceof EE_Validation_Error) {
+							$submission_error_messages[] = sprintf(
+								_x('%s : %s', 'Form Section Name : Form Validation Error', 'event_espresso'),
+								$validation_error->get_form_section()->html_label_text(),
+								$validation_error->getMessage()
+							);
+						}
+					}
+					EE_Error::add_error(join('<br />', $submission_error_messages), __FILE__, __FUNCTION__, __LINE__);
+
+					return array();
+				}
+			}
+		} catch (EE_Error $e) {
+			EE_Error::add_error($e->getMessage(), __FILE__, __FUNCTION__, __LINE__);
+
+			return array();
+		}
+
+		return $payment_form->valid_data();
+	}
+
+
+	/**
+	 * _generate_payment_form_section
+	 *
+	 * @return EE_Form_Section_Proper
+	 */
+	protected function _generate_payment_form_section()
+	{
+		return new EE_Form_Section_Proper(
+			array(
+				'name'        => 'txn_admin_payment',
+				'subsections' => array(
+					'PAY_ID'          => new EE_Text_Input(
+						array(
+							'default'               => 0,
+							'required'              => false,
+							'html_label_text'       => esc_html__('Payment ID', 'event_espresso'),
+							'validation_strategies' => array(new EE_Int_Normalization())
+						)
+					),
+					'TXN_ID'          => new EE_Text_Input(
+						array(
+							'default'               => 0,
+							'required'              => true,
+							'html_label_text'       => esc_html__('Transaction ID', 'event_espresso'),
+							'validation_strategies' => array(new EE_Int_Normalization())
+						)
+					),
+					'type'            => new EE_Text_Input(
+						array(
+							'default'               => 1,
+							'required'              => true,
+							'html_label_text'       => esc_html__('Payment or Refund', 'event_espresso'),
+							'validation_strategies' => array(new EE_Int_Normalization())
+						)
+					),
+					'amount'          => new EE_Text_Input(
+						array(
+							'default'               => 0,
+							'required'              => true,
+							'html_label_text'       => esc_html__('Payment amount', 'event_espresso'),
+							'validation_strategies' => array(new EE_Float_Normalization())
+						)
+					),
+					'status'          => new EE_Text_Input(
+						array(
+							'default'         => EEM_Payment::status_id_approved,
+							'required'        => true,
+							'html_label_text' => esc_html__('Payment status', 'event_espresso'),
+						)
+					),
+					'PMD_ID'          => new EE_Text_Input(
+						array(
+							'default'               => 2,
+							'required'              => true,
+							'html_label_text'       => esc_html__('Payment Method', 'event_espresso'),
+							'validation_strategies' => array(new EE_Int_Normalization())
+						)
+					),
+					'date'            => new EE_Text_Input(
+						array(
+							'default'         => time(),
+							'required'        => true,
+							'html_label_text' => esc_html__('Payment date', 'event_espresso'),
+						)
+					),
+					'txn_id_chq_nmbr' => new EE_Text_Input(
+						array(
+							'default'               => '',
+							'required'              => false,
+							'html_label_text'       => esc_html__('Transaction or Cheque Number', 'event_espresso'),
+							'validation_strategies' => array(
+								new EE_Max_Length_Validation_Strategy(esc_html__('Input too long', 'event_espresso'),
+									100),
+							)
+						)
+					),
+					'po_number'       => new EE_Text_Input(
+						array(
+							'default'               => '',
+							'required'              => false,
+							'html_label_text'       => esc_html__('Purchase Order Number', 'event_espresso'),
+							'validation_strategies' => array(
+								new EE_Max_Length_Validation_Strategy(esc_html__('Input too long', 'event_espresso'),
+									100),
+							)
+						)
+					),
+					'accounting'      => new EE_Text_Input(
+						array(
+							'default'               => '',
+							'required'              => false,
+							'html_label_text'       => esc_html__('Extra Field for Accounting', 'event_espresso'),
+							'validation_strategies' => array(
+								new EE_Max_Length_Validation_Strategy(esc_html__('Input too long', 'event_espresso'),
+									100),
+							)
+						)
+					),
+				)
+			)
+		);
+	}
+
+
+	/**
+	 * _create_payment_from_request_data
+	 *
+	 * @param array $valid_data
+	 *
+	 * @return EE_Payment
+	 */
+	protected function _create_payment_from_request_data($valid_data)
+	{
+		$PAY_ID = $valid_data['PAY_ID'];
+		// get payment amount
+		$amount = $valid_data['amount'] ? abs($valid_data['amount']) : 0;
+		// payments have a type value of 1 and refunds have a type value of -1
+		// so multiplying amount by type will give a positive value for payments, and negative values for refunds
+		$amount = $valid_data['type'] < 0 ? $amount * -1 : $amount;
+		// for some reason the date string coming in has extra spaces between the date and time.  This fixes that.
+		$date    = $valid_data['date'] ? preg_replace('/\s+/', ' ', $valid_data['date']) : date('Y-m-d g:i a',
+			current_time('timestamp'));
+		$payment = EE_Payment::new_instance(
+			array(
+				'TXN_ID'              => $valid_data['TXN_ID'],
+				'STS_ID'              => $valid_data['status'],
+				'PAY_timestamp'       => $date,
+				'PAY_source'          => EEM_Payment_Method::scope_admin,
+				'PMD_ID'              => $valid_data['PMD_ID'],
+				'PAY_amount'          => $amount,
+				'PAY_txn_id_chq_nmbr' => $valid_data['txn_id_chq_nmbr'],
+				'PAY_po_number'       => $valid_data['po_number'],
+				'PAY_extra_accntng'   => $valid_data['accounting'],
+				'PAY_details'         => $valid_data,
+				'PAY_ID'              => $PAY_ID
+			),
+			'',
+			array('Y-m-d', 'g:i a')
+		);
+
+		if ( ! $payment->save()) {
+			EE_Error::add_error(
+				sprintf(
+					esc_html__('Payment %1$d has not been successfully saved to the database.', 'event_espresso'),
+					$payment->ID()
+				),
+				__FILE__, __FUNCTION__, __LINE__
+			);
+		}
+
+		return $payment;
+	}
+
+
+	/**
+	 * _process_transaction_payments
+	 *
+	 * @param \EE_Transaction $transaction
+	 *
+	 * @return array
+	 */
+	protected function _process_transaction_payments(EE_Transaction $transaction)
+	{
+		/** @type EE_Transaction_Payments $transaction_payments */
+		$transaction_payments = EE_Registry::instance()->load_class('Transaction_Payments');
+		//update the transaction with this payment
+		if ($transaction_payments->calculate_total_payments_and_update_status($transaction)) {
+			EE_Error::add_success(esc_html__('The payment has been processed successfully.', 'event_espresso'),
+				__FILE__, __FUNCTION__, __LINE__);
+		} else {
+			EE_Error::add_error(
+				esc_html__('The payment was processed successfully but the amount paid for the transaction was not updated.',
+					'event_espresso')
+				, __FILE__, __FUNCTION__, __LINE__
+			);
+		}
+	}
+
+
+	/**
+	 * _get_REG_IDs_to_apply_payment_to
+	 *
+	 * returns a list of registration IDs that the payment will apply to
+	 *
+	 * @param \EE_Payment $payment
+	 *
+	 * @return array
+	 */
+	protected function _get_REG_IDs_to_apply_payment_to(EE_Payment $payment)
+	{
+		$REG_IDs = array();
+		// grab array of IDs for specific registrations to apply changes to
+		if (isset($this->_req_data['txn_admin_payment']['registrations'])) {
+			$REG_IDs = (array)$this->_req_data['txn_admin_payment']['registrations'];
+		}
+		//nothing specified ? then get all reg IDs
+		if (empty($REG_IDs)) {
+			$registrations = $payment->transaction()->registrations();
+			$REG_IDs       = ! empty($registrations) ? array_keys($registrations) : $this->_get_existing_reg_payment_REG_IDs($payment);
+		}
+
+		// ensure that REG_IDs are integers and NOT strings
+		return array_map('intval', $REG_IDs);
+	}
+
+
+	/**
+	 * @return array
+	 */
+	public function existing_reg_payment_REG_IDs()
+	{
+		return $this->_existing_reg_payment_REG_IDs;
+	}
+
+
+	/**
+	 * @param array $existing_reg_payment_REG_IDs
+	 */
+	public function set_existing_reg_payment_REG_IDs($existing_reg_payment_REG_IDs = null)
+	{
+		$this->_existing_reg_payment_REG_IDs = $existing_reg_payment_REG_IDs;
+	}
+
+
+	/**
+	 * _get_existing_reg_payment_REG_IDs
+	 *
+	 * returns a list of registration IDs that the payment is currently related to
+	 * as recorded in the database
+	 *
+	 * @param \EE_Payment $payment
+	 *
+	 * @return array
+	 */
+	protected function _get_existing_reg_payment_REG_IDs(EE_Payment $payment)
+	{
+		if ($this->existing_reg_payment_REG_IDs() === null) {
+			// let's get any existing reg payment records for this payment
+			$existing_reg_payment_REG_IDs = $payment->get_many_related('Registration');
+			// but we only want the REG IDs, so grab the array keys
+			$existing_reg_payment_REG_IDs = ! empty($existing_reg_payment_REG_IDs) ? array_keys($existing_reg_payment_REG_IDs) : array();
+			$this->set_existing_reg_payment_REG_IDs($existing_reg_payment_REG_IDs);
+		}
+
+		return $this->existing_reg_payment_REG_IDs();
+	}
+
+
+	/**
+	 * _remove_existing_registration_payments
+	 *
+	 * this calculates the difference between existing relations
+	 * to the supplied payment and the new list registration IDs,
+	 * removes any related registrations that no longer apply,
+	 * and then updates the registration paid fields
+	 *
+	 * @param \EE_Payment $payment
+	 * @param int         $PAY_ID
+	 *
+	 * @return bool;
+	 */
+	protected function _remove_existing_registration_payments(EE_Payment $payment, $PAY_ID = 0)
+	{
+		// newly created payments will have nothing recorded for $PAY_ID
+		if ($PAY_ID == 0) {
+			return false;
+		}
+		$existing_reg_payment_REG_IDs = $this->_get_existing_reg_payment_REG_IDs($payment);
+		if (empty($existing_reg_payment_REG_IDs)) {
+			return false;
+		}
+		/** @type EE_Transaction_Payments $transaction_payments */
+		$transaction_payments = EE_Registry::instance()->load_class('Transaction_Payments');
+
+		return $transaction_payments->delete_registration_payments_and_update_registrations(
+			$payment,
+			array(
+				array(
+					'PAY_ID' => $payment->ID(),
+					'REG_ID' => array('IN', $existing_reg_payment_REG_IDs),
+				)
+			)
+		);
+	}
+
+
+	/**
+	 * _update_registration_payments
+	 *
+	 * this applies the payments to the selected registrations
+	 * but only if they have not already been paid for
+	 *
+	 * @param  EE_Transaction $transaction
+	 * @param \EE_Payment     $payment
+	 * @param array           $REG_IDs
+	 *
+	 * @return bool
+	 */
+	protected function _update_registration_payments(
+		EE_Transaction $transaction,
+		EE_Payment $payment,
+		$REG_IDs = array()
+	) {
+		// we can pass our own custom set of registrations to EE_Payment_Processor::process_registration_payments()
+		// so let's do that using our set of REG_IDs from the form
+		$registration_query_where_params = array(
+			'REG_ID' => array('IN', $REG_IDs)
+		);
+		// but add in some conditions regarding payment,
+		// so that we don't apply payments to registrations that are free or have already been paid for
+		// but ONLY if the payment is NOT a refund ( ie: the payment amount is not negative )
+		if ( ! $payment->is_a_refund()) {
+			$registration_query_where_params['REG_final_price']  = array('!=', 0);
+			$registration_query_where_params['REG_final_price*'] = array('!=', 'REG_paid', true);
+		}
+		//EEH_Debug_Tools::printr( $registration_query_where_params, '$registration_query_where_params', __FILE__, __LINE__ );
+		$registrations = $transaction->registrations(array($registration_query_where_params));
+		if ( ! empty($registrations)) {
+			/** @type EE_Payment_Processor $payment_processor */
+			$payment_processor = EE_Registry::instance()->load_core('Payment_Processor');
+			$payment_processor->process_registration_payments($transaction, $payment, $registrations);
+		}
+	}
+
+
+	/**
+	 * _process_registration_status_change
+	 *
+	 * This processes requested registration status changes for all the registrations
+	 * on a given transaction and (optionally) sends out notifications for the changes.
+	 *
+	 * @param  EE_Transaction $transaction
+	 * @param array           $REG_IDs
+	 *
+	 * @return bool
+	 */
+	protected function _process_registration_status_change(EE_Transaction $transaction, $REG_IDs = array())
+	{
+		// first if there is no change in status then we get out.
+		if (
+			! isset($this->_req_data['txn_reg_status_change'], $this->_req_data['txn_reg_status_change']['reg_status'])
+			|| $this->_req_data['txn_reg_status_change']['reg_status'] == 'NAN'
+		) {
+			//no error message, no change requested, just nothing to do man.
+			return false;
+		}
+		/** @type EE_Transaction_Processor $transaction_processor */
+		$transaction_processor = EE_Registry::instance()->load_class('Transaction_Processor');
+
+		// made it here dude?  Oh WOW.  K, let's take care of changing the statuses
+		return $transaction_processor->manually_update_registration_statuses(
+			$transaction,
+			sanitize_text_field($this->_req_data['txn_reg_status_change']['reg_status']),
+			array(array('REG_ID' => array('IN', $REG_IDs)))
+		);
+	}
+
+
+	/**
+	 * _build_payment_json_response
+	 *
+	 * @access public
+	 *
+	 * @param \EE_Payment $payment
+	 * @param array       $REG_IDs
+	 * @param bool | null $delete_txn_reg_status_change
+	 *
+	 * @return array
+	 */
+	protected function _build_payment_json_response(
+		EE_Payment $payment,
+		$REG_IDs = array(),
+		$delete_txn_reg_status_change = null
+	) {
+		// was the payment deleted ?
+		if (is_bool($delete_txn_reg_status_change)) {
+			return array(
+				'PAY_ID'                       => $payment->ID(),
+				'amount'                       => $payment->amount(),
+				'total_paid'                   => $payment->transaction()->paid(),
+				'txn_status'                   => $payment->transaction()->status_ID(),
+				'pay_status'                   => $payment->STS_ID(),
+				'registrations'                => $this->_registration_payment_data_array($REG_IDs),
+				'delete_txn_reg_status_change' => $delete_txn_reg_status_change,
+			);
+		} else {
+			$this->_get_payment_status_array();
+
+			return array(
+				'amount'           => $payment->amount(),
+				'total_paid'       => $payment->transaction()->paid(),
+				'txn_status'       => $payment->transaction()->status_ID(),
+				'pay_status'       => $payment->STS_ID(),
+				'PAY_ID'           => $payment->ID(),
+				'STS_ID'           => $payment->STS_ID(),
+				'status'           => self::$_pay_status[$payment->STS_ID()],
+				'date'             => $payment->timestamp('Y-m-d', 'h:i a'),
+				'method'           => strtoupper($payment->source()),
+				'PM_ID'            => $payment->payment_method() ? $payment->payment_method()->ID() : 1,
+				'gateway'          => $payment->payment_method() ? $payment->payment_method()->admin_name() : esc_html__("Unknown",
+					'event_espresso'),
+				'gateway_response' => $payment->gateway_response(),
+				'txn_id_chq_nmbr'  => $payment->txn_id_chq_nmbr(),
+				'po_number'        => $payment->po_number(),
+				'extra_accntng'    => $payment->extra_accntng(),
+				'registrations'    => $this->_registration_payment_data_array($REG_IDs),
+			);
+		}
+	}
+
+
+	/**
+	 * delete_payment
+	 *    delete a payment or refund made towards a transaction
+	 *
+	 * @access public
+	 * @return void
+	 */
+	public function delete_payment()
+	{
+		$json_response_data = array('return_data' => false);
+		$PAY_ID             = isset($this->_req_data['delete_txn_admin_payment'], $this->_req_data['delete_txn_admin_payment']['PAY_ID']) ? absint($this->_req_data['delete_txn_admin_payment']['PAY_ID']) : 0;
+		if ($PAY_ID) {
+			$delete_txn_reg_status_change = isset($this->_req_data['delete_txn_reg_status_change']) ? $this->_req_data['delete_txn_reg_status_change'] : false;
+			$payment                      = EEM_Payment::instance()->get_one_by_ID($PAY_ID);
+			if ($payment instanceof EE_Payment) {
+				$REG_IDs = $this->_get_existing_reg_payment_REG_IDs($payment);
+				/** @type EE_Transaction_Payments $transaction_payments */
+				$transaction_payments = EE_Registry::instance()->load_class('Transaction_Payments');
+				if ($transaction_payments->delete_payment_and_update_transaction($payment)) {
+					$json_response_data['return_data'] = $this->_build_payment_json_response($payment, $REG_IDs,
+						$delete_txn_reg_status_change);
+					if ($delete_txn_reg_status_change) {
+						$this->_req_data['txn_reg_status_change'] = $delete_txn_reg_status_change;
+						//MAKE sure we also add the delete_txn_req_status_change to the
+						//$_REQUEST global because that's how messages will be looking for it.
+						$_REQUEST['txn_reg_status_change'] = $delete_txn_reg_status_change;
+						$this->_maybe_send_notifications();
+						$this->_process_registration_status_change($payment->transaction(), $REG_IDs);
+					}
+				}
+			} else {
+				EE_Error::add_error(
+					esc_html__('Valid Payment data could not be retrieved from the database.', 'event_espresso'),
+					__FILE__, __FUNCTION__, __LINE__
+				);
+			}
+		} else {
+			EE_Error::add_error(
+				esc_html__('A valid Payment ID was not received, therefore payment form data could not be loaded.',
+					'event_espresso'),
+				__FILE__, __FUNCTION__, __LINE__
+			);
+		}
+		$notices              = EE_Error::get_notices(false, false, false);
+		$this->_template_args = array(
+			'data'      => $json_response_data,
+			'success'   => $notices['success'],
+			'error'     => $notices['errors'],
+			'attention' => $notices['attention']
+		);
+		$this->_return_json();
+	}
+
+
+	/**
+	 * _registration_payment_data_array
+	 * adds info for 'owing' and 'paid' for each registration to the json response
+	 *
+	 * @access protected
+	 *
+	 * @param array $REG_IDs
+	 *
+	 * @return array
+	 */
+	protected function _registration_payment_data_array($REG_IDs)
+	{
+		$registration_payment_data = array();
+		//if non empty reg_ids lets get an array of registrations and update the values for the apply_payment/refund rows.
+		if ( ! empty($REG_IDs)) {
+			$registrations = EEM_Registration::instance()->get_all(array(array('REG_ID' => array('IN', $REG_IDs))));
+			foreach ($registrations as $registration) {
+				if ($registration instanceof EE_Registration) {
+					$registration_payment_data[$registration->ID()] = array(
+						'paid'  => $registration->pretty_paid(),
+						'owing' => EEH_Template::format_currency($registration->final_price() - $registration->paid()),
+					);
+				}
+			}
+		}
+
+		return $registration_payment_data;
+	}
+
+
+	/**
+	 * _maybe_send_notifications
+	 *
+	 * determines whether or not the admin has indicated that notifications should be sent.
+	 * If so, will toggle a filter switch for delivering registration notices.
+	 * If passed an EE_Payment object, then it will trigger payment notifications instead.
+	 *
+	 * @access protected
+	 *
+	 * @param \EE_Payment | null $payment
+	 */
+	protected function _maybe_send_notifications($payment = null)
+	{
+		switch ($payment instanceof EE_Payment) {
+			// payment notifications
+			case true :
+				if (
+					isset(
+						$this->_req_data['txn_payments'],
+						$this->_req_data['txn_payments']['send_notifications']
+					) &&
+					filter_var($this->_req_data['txn_payments']['send_notifications'], FILTER_VALIDATE_BOOLEAN)
+				) {
+					$this->_process_payment_notification($payment);
+				}
+				break;
+			// registration notifications
+			case false :
+				if (
+					isset(
+						$this->_req_data['txn_reg_status_change'],
+						$this->_req_data['txn_reg_status_change']['send_notifications']
+					) &&
+					filter_var($this->_req_data['txn_reg_status_change']['send_notifications'], FILTER_VALIDATE_BOOLEAN)
+				) {
+					add_filter('FHEE__EED_Messages___maybe_registration__deliver_notifications', '__return_true');
+				}
+				break;
+		}
+	}
+
+
+	/**
+	 * _send_payment_reminder
+	 *    generates HTML for the View Transaction Details Admin page
+	 *
+	 * @access protected
+	 * @return void
+	 */
+	protected function _send_payment_reminder()
+	{
+		$TXN_ID      = ( ! empty($this->_req_data['TXN_ID'])) ? absint($this->_req_data['TXN_ID']) : false;
+		$transaction = EEM_Transaction::instance()->get_one_by_ID($TXN_ID);
+		$query_args  = isset($this->_req_data['redirect_to']) ? array(
+			'action' => $this->_req_data['redirect_to'],
+			'TXN_ID' => $this->_req_data['TXN_ID']
+		) : array();
+		do_action('AHEE__Transactions_Admin_Page___send_payment_reminder__process_admin_payment_reminder',
+			$transaction);
+		$this->_redirect_after_action(false, esc_html__('payment reminder', 'event_espresso'),
+			esc_html__('sent', 'event_espresso'), $query_args, true);
+	}
+
+
+	/**
+	 *  get_transactions
+	 *    get transactions for given parameters (used by list table)
+	 *
+	 * @param  int     $perpage how many transactions displayed per page
+	 * @param  boolean $count   return the count or objects
+	 * @param string   $view
+	 *
+	 * @return mixed int = count || array of transaction objects
+	 */
+	public function get_transactions($perpage, $count = false, $view = '')
+	{
+
+		$TXN = EEM_Transaction::instance();
+
+		$start_date = isset($this->_req_data['txn-filter-start-date']) ? wp_strip_all_tags($this->_req_data['txn-filter-start-date']) : date('m/d/Y',
+			strtotime('-10 year'));
+		$end_date   = isset($this->_req_data['txn-filter-end-date']) ? wp_strip_all_tags($this->_req_data['txn-filter-end-date']) : date('m/d/Y');
+
+		//make sure our timestamps start and end right at the boundaries for each day
+		$start_date = date('Y-m-d', strtotime($start_date)) . ' 00:00:00';
+		$end_date   = date('Y-m-d', strtotime($end_date)) . ' 23:59:59';
+
+
+		//convert to timestamps
+		$start_date = strtotime($start_date);
+		$end_date   = strtotime($end_date);
+
+		//makes sure start date is the lowest value and vice versa
+		$start_date = min($start_date, $end_date);
+		$end_date   = max($start_date, $end_date);
+
+		//convert to correct format for query
+		$start_date = EEM_Transaction::instance()->convert_datetime_for_query('TXN_timestamp',
+			date('Y-m-d H:i:s', $start_date), 'Y-m-d H:i:s');
+		$end_date   = EEM_Transaction::instance()->convert_datetime_for_query('TXN_timestamp',
+			date('Y-m-d H:i:s', $end_date), 'Y-m-d H:i:s');
+
+
+		//set orderby
+		$this->_req_data['orderby'] = ! empty($this->_req_data['orderby']) ? $this->_req_data['orderby'] : '';
+
+		switch ($this->_req_data['orderby']) {
+			case 'TXN_ID':
+				$orderby = 'TXN_ID';
+				break;
+			case 'ATT_fname':
+				$orderby = 'Registration.Attendee.ATT_fname';
+				break;
+			case 'event_name':
+				$orderby = 'Registration.Event.EVT_name';
+				break;
+			default: //'TXN_timestamp'
+				$orderby = 'TXN_timestamp';
+		}
+
+		$sort         = (isset($this->_req_data['order']) && ! empty($this->_req_data['order'])) ? $this->_req_data['order'] : 'DESC';
+		$current_page = isset($this->_req_data['paged']) && ! empty($this->_req_data['paged']) ? $this->_req_data['paged'] : 1;
+		$per_page     = isset($perpage) && ! empty($perpage) ? $perpage : 10;
+		$per_page     = isset($this->_req_data['perpage']) && ! empty($this->_req_data['perpage']) ? $this->_req_data['perpage'] : $per_page;
+
+		$offset = ($current_page - 1) * $per_page;
+		$limit  = array($offset, $per_page);
+
+		$_where = array(
+			'TXN_timestamp'          => array('BETWEEN', array($start_date, $end_date)),
+			'Registration.REG_count' => 1
+		);
+
+		if (isset($this->_req_data['EVT_ID'])) {
+			$_where['Registration.EVT_ID'] = $this->_req_data['EVT_ID'];
+		}
+
+		if (isset($this->_req_data['s'])) {
+			$search_string = '%' . $this->_req_data['s'] . '%';
+			$_where['OR']  = array(
+				'Registration.Event.EVT_name'         => array('LIKE', $search_string),
+				'Registration.Event.EVT_desc'         => array('LIKE', $search_string),
+				'Registration.Event.EVT_short_desc'   => array('LIKE', $search_string),
+				'Registration.Attendee.ATT_full_name' => array('LIKE', $search_string),
+				'Registration.Attendee.ATT_fname'     => array('LIKE', $search_string),
+				'Registration.Attendee.ATT_lname'     => array('LIKE', $search_string),
+				'Registration.Attendee.ATT_short_bio' => array('LIKE', $search_string),
+				'Registration.Attendee.ATT_email'     => array('LIKE', $search_string),
+				'Registration.Attendee.ATT_address'   => array('LIKE', $search_string),
+				'Registration.Attendee.ATT_address2'  => array('LIKE', $search_string),
+				'Registration.Attendee.ATT_city'      => array('LIKE', $search_string),
+				'Registration.REG_final_price'        => array('LIKE', $search_string),
+				'Registration.REG_code'               => array('LIKE', $search_string),
+				'Registration.REG_count'              => array('LIKE', $search_string),
+				'Registration.REG_group_size'         => array('LIKE', $search_string),
+				'Registration.Ticket.TKT_name'        => array('LIKE', $search_string),
+				'Registration.Ticket.TKT_description' => array('LIKE', $search_string),
+				'Payment.PAY_source'                  => array('LIKE', $search_string),
+				'Payment.Payment_Method.PMD_name'     => array('LIKE', $search_string),
+				'TXN_session_data'                    => array('LIKE', $search_string),
+				'Payment.PAY_txn_id_chq_nmbr'         => array('LIKE', $search_string)
+			);
+		}
+
+		//failed transactions
+		$failed    = ( ! empty($this->_req_data['status']) && $this->_req_data['status'] == 'failed' && ! $count) || ($count && $view == 'failed') ? true : false;
+		$abandoned = ( ! empty($this->_req_data['status']) && $this->_req_data['status'] == 'abandoned' && ! $count) || ($count && $view == 'abandoned') ? true : false;
+
+		if ($failed) {
+			$_where['STS_ID'] = EEM_Transaction::failed_status_code;
+		} else if ($abandoned) {
+			$_where['STS_ID'] = EEM_Transaction::abandoned_status_code;
+		} else {
+			$_where['STS_ID']  = array('!=', EEM_Transaction::failed_status_code);
+			$_where['STS_ID*'] = array('!=', EEM_Transaction::abandoned_status_code);
+		}
+
+		$query_params = array($_where, 'order_by' => array($orderby => $sort), 'limit' => $limit);
+
+		$transactions = $count ? $TXN->count(array($_where), 'TXN_ID', true) : $TXN->get_all($query_params);
+
+
+		return $transactions;
+
+	}
 
 
 }

core/EE_Dependency_Map.core.php

Unused Use Statements -1 removed lines

@@ -1,7 +1,6 @@
 <?php
 use EventEspresso\core\exceptions\InvalidDataTypeException;
 use EventEspresso\core\exceptions\InvalidInterfaceException;
-use EventEspresso\core\services\loaders\LoaderFactory;
 use EventEspresso\core\services\loaders\LoaderInterface;
 
 if (! defined('EVENT_ESPRESSO_VERSION')) {

Spacing +23 added lines, -23 removed lines

@@ -4,7 +4,7 @@ 
 use EventEspresso\core\services\loaders\LoaderFactory;
 use EventEspresso\core\services\loaders\LoaderInterface;
 
-if (! defined('EVENT_ESPRESSO_VERSION')) {
+if ( ! defined('EVENT_ESPRESSO_VERSION')) {
     exit('No direct script access allowed');
 }
 
@@ -130,7 +130,7 @@ 
     public static function instance(EE_Request $request = null, EE_Response $response = null)
     {
         // check if class object is instantiated, and instantiated properly
-        if (! self::$_instance instanceof EE_Dependency_Map) {
+        if ( ! self::$_instance instanceof EE_Dependency_Map) {
             self::$_instance = new EE_Dependency_Map($request, $response);
         }
         return self::$_instance;
@@ -185,16 +185,16 @@ 
     ) {
         $class = trim($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[$class] = array();
         }
         // we need to make sure that any aliases used when registering a dependency
         // get resolved to the correct class name
-        foreach ((array)$dependencies as $dependency => $load_source) {
+        foreach ((array) $dependencies as $dependency => $load_source) {
             $alias = self::$_instance->get_alias($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;
@@ -207,13 +207,13 @@ 
         // 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, $dependency_count)
             // otherwise just take the incoming array because nothing previously existed
@@ -231,7 +231,7 @@ 
      */
     public static function register_class_loader($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')
             );
@@ -255,7 +255,7 @@ 
             );
         }
         $class_name = self::$_instance->get_alias($class_name);
-        if (! isset(self::$_instance->_class_loaders[$class_name])) {
+        if ( ! isset(self::$_instance->_class_loaders[$class_name])) {
             self::$_instance->_class_loaders[$class_name] = $loader;
             return true;
         }
@@ -340,7 +340,7 @@ 
     public function class_loader($class_name)
     {
         // all legacy models use load_model()
-        if(strpos($class_name, 'EEM_') === 0){
+        if (strpos($class_name, 'EEM_') === 0) {
             return 'load_model';
         }
         $class_name = $this->get_alias($class_name);
@@ -369,7 +369,7 @@ 
     public function add_alias($class_name, $alias, $for_class = '')
     {
         if ($for_class !== '') {
-            if (! isset($this->_aliases[$for_class])) {
+            if ( ! isset($this->_aliases[$for_class])) {
                 $this->_aliases[$for_class] = array();
             }
             $this->_aliases[$for_class][$class_name] = $alias;
@@ -415,10 +415,10 @@ 
      */
     public function get_alias($class_name = '', $for_class = '')
     {
-        if (! $this->has_alias($class_name, $for_class)) {
+        if ( ! $this->has_alias($class_name, $for_class)) {
             return $class_name;
         }
-        if ($for_class !== '' && isset($this->_aliases[ $for_class ][ $class_name ])) {
+        if ($for_class !== '' && isset($this->_aliases[$for_class][$class_name])) {
             return $this->get_alias($this->_aliases[$for_class][$class_name], $for_class);
         }
         return $this->get_alias($this->_aliases[$class_name]);
@@ -664,10 +664,10 @@ 
             'EE_Front_Controller'                  => 'load_core',
             'EE_Module_Request_Router'             => 'load_core',
             'EE_Registry'                          => 'load_core',
-            'EE_Request'                           => function () use (&$request) {
+            'EE_Request'                           => function() use (&$request) {
                 return $request;
             },
-            'EE_Response'                          => function () use (&$response) {
+            'EE_Response'                          => function() use (&$response) {
                 return $response;
             },
             'EE_Request_Handler'                   => 'load_core',
@@ -684,7 +684,7 @@ 
             'EE_Messages_Queue'                    => 'load_lib',
             'EE_Messages_Data_Handler_Collection'  => 'load_lib',
             'EE_Message_Template_Group_Collection' => 'load_lib',
-            'EE_Messages_Generator'                => function () {
+            'EE_Messages_Generator'                => function() {
                 return EE_Registry::instance()->load_lib(
                     'Messages_Generator',
                     array(),
@@ -692,7 +692,7 @@ 
                     false
                 );
             },
-            'EE_Messages_Template_Defaults'        => function ($arguments = array()) {
+            'EE_Messages_Template_Defaults'        => function($arguments = array()) {
                 return EE_Registry::instance()->load_lib(
                     'Messages_Template_Defaults',
                     $arguments,
@@ -705,19 +705,19 @@ 
             // 'EEM_Message_Template_Group'           => 'load_model',
             // 'EEM_Message_Template'                 => 'load_model',
             //load_helper
-            'EEH_Parse_Shortcodes'                 => function () {
+            'EEH_Parse_Shortcodes'                 => function() {
                 if (EE_Registry::instance()->load_helper('Parse_Shortcodes')) {
                     return new EEH_Parse_Shortcodes();
                 }
                 return null;
             },
-            'EE_Template_Config'                   => function () {
+            'EE_Template_Config'                   => function() {
                 return EE_Config::instance()->template_settings;
             },
-            'EE_Currency_Config'                   => function () {
+            'EE_Currency_Config'                   => function() {
                 return EE_Config::instance()->currency;
             },
-            'EventEspresso\core\services\loaders\Loader' => function () use (&$loader) {
+            'EventEspresso\core\services\loaders\Loader' => function() use (&$loader) {
                 return $loader;
             },
         );

Indentation +767 added lines, -767 removed lines

@@ -5,7 +5,7 @@ 
 use EventEspresso\core\services\loaders\LoaderInterface;
 
 if (! defined('EVENT_ESPRESSO_VERSION')) {
-    exit('No direct script access allowed');
+	exit('No direct script access allowed');
 }
 
 
@@ -22,772 +22,772 @@ 
 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;
-
-    /**
-     * @type EE_Request $request
-     */
-    protected $_request;
-
-    /**
-     * @type EE_Response $response
-     */
-    protected $_response;
-
-    /**
-     * @type LoaderInterface $loader
-     */
-    protected $loader;
-
-    /**
-     * @type array $_dependency_map
-     */
-    protected $_dependency_map = array();
-
-    /**
-     * @type array $_class_loaders
-     */
-    protected $_class_loaders = array();
-
-    /**
-     * @type array $_aliases
-     */
-    protected $_aliases = array();
-
-
-
-    /**
-     * EE_Dependency_Map constructor.
-     *
-     * @param EE_Request  $request
-     * @param EE_Response $response
-     */
-    protected function __construct(EE_Request $request, EE_Response $response)
-    {
-        $this->_request = $request;
-        $this->_response = $response;
-        add_action('EE_Load_Espresso_Core__handle_request__initialize_core_loading', array($this, 'initialize'));
-        do_action('EE_Dependency_Map____construct');
-    }
-
-
-
-    /**
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     * @throws InvalidArgumentException
-     */
-    public function initialize()
-    {
-        $this->_register_core_dependencies();
-        $this->_register_core_class_loaders();
-        $this->_register_core_aliases();
-    }
-
-
-
-    /**
-     * @singleton method used to instantiate class object
-     * @access    public
-     * @param EE_Request  $request
-     * @param EE_Response $response
-     * @return EE_Dependency_Map
-     */
-    public static function instance(EE_Request $request = null, EE_Response $response = null)
-    {
-        // check if class object is instantiated, and instantiated properly
-        if (! self::$_instance instanceof EE_Dependency_Map) {
-            self::$_instance = new EE_Dependency_Map($request, $response);
-        }
-        return self::$_instance;
-    }
-
-
-
-    /**
-     * @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[ $class ] = array();
-        }
-        // we need to make sure that any aliases used when registering a dependency
-        // get resolved to the correct class name
-        foreach ((array)$dependencies as $dependency => $load_source) {
-            $alias = self::$_instance->get_alias($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->get_alias($class_name);
-        if (! isset(self::$_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 = $this->get_alias($dependency);
-        return isset($this->_dependency_map[$class_name], $this->_dependency_map[$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 = $this->get_alias($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 = $this->get_alias($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 $class_name 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 $for_class  the class that has the dependency (is type hinting for the interface)
-     */
-    public function add_alias($class_name, $alias, $for_class = '')
-    {
-        if ($for_class !== '') {
-            if (! isset($this->_aliases[$for_class])) {
-                $this->_aliases[$for_class] = array();
-            }
-            $this->_aliases[$for_class][$class_name] = $alias;
-        }
-        $this->_aliases[$class_name] = $alias;
-    }
-
-
-
-    /**
-     * returns TRUE if the provided class name has an alias
-     *
-     * @param string $class_name
-     * @param string $for_class
-     * @return bool
-     */
-    public function has_alias($class_name = '', $for_class = '')
-    {
-        return isset($this->_aliases[$for_class], $this->_aliases[$for_class][$class_name])
-               || (
-                   isset($this->_aliases[$class_name])
-                   && ! is_array($this->_aliases[$class_name])
-               );
-    }
-
-
-
-    /**
-     * returns alias for class name if one exists, otherwise returns the original classname
-     * functions recursively, so that multiple aliases can be used to drill down to a classname
-     *  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 $class_name
-     * @param string $for_class
-     * @return string
-     */
-    public function get_alias($class_name = '', $for_class = '')
-    {
-        if (! $this->has_alias($class_name, $for_class)) {
-            return $class_name;
-        }
-        if ($for_class !== '' && isset($this->_aliases[ $for_class ][ $class_name ])) {
-            return $this->get_alias($this->_aliases[$for_class][$class_name], $for_class);
-        }
-        return $this->get_alias($this->_aliases[$class_name]);
-    }
-
-
-
-    /**
-     * 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,
-            ),
-            'EE_Session'                                                                                                  => array(
-                'EventEspresso\core\services\cache\TransientCacheStorage' => 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\Registry'                                                                 => array(
-                'EE_Template_Config' => EE_Dependency_Map::load_from_cache,
-                'EE_Currency_Config' => 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\services\orm\ModelFieldFactory'                                                   => array(
-                'EventEspresso\core\services\loaders\Loader'              => EE_Dependency_Map::load_from_cache,
-            ),
-            'LEGACY_MODELS'                                                   => array(
-                null,
-                'EventEspresso\core\services\orm\ModelFieldFactory' => EE_Dependency_Map::load_from_cache,
-            ),
-            'EE_Module_Request_Router' => array(
-                'EE_Request' => 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();
-     *        },
-     *
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws InvalidArgumentException
-     */
-    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;
-        $loader = &$this->loader;
-        $this->_class_loaders = array(
-            //load_core
-            'EE_Capabilities'                      => 'load_core',
-            'EE_Encryption'                        => 'load_core',
-            'EE_Front_Controller'                  => 'load_core',
-            'EE_Module_Request_Router'             => 'load_core',
-            'EE_Registry'                          => 'load_core',
-            'EE_Request'                           => function () use (&$request) {
-                return $request;
-            },
-            'EE_Response'                          => function () use (&$response) {
-                return $response;
-            },
-            'EE_Request_Handler'                   => 'load_core',
-            'EE_Session'                           => 'load_core',
-            'EE_Cron_Tasks'                        => 'load_core',
-            //load_lib
-            'EE_Message_Resource_Manager'          => 'load_lib',
-            'EE_Message_Type_Collection'           => 'load_lib',
-            'EE_Message_Type_Collection_Loader'    => 'load_lib',
-            'EE_Messenger_Collection'              => 'load_lib',
-            'EE_Messenger_Collection_Loader'       => 'load_lib',
-            'EE_Messages_Processor'                => 'load_lib',
-            'EE_Message_Repository'                => 'load_lib',
-            'EE_Messages_Queue'                    => 'load_lib',
-            'EE_Messages_Data_Handler_Collection'  => 'load_lib',
-            'EE_Message_Template_Group_Collection' => 'load_lib',
-            'EE_Messages_Generator'                => function () {
-                return EE_Registry::instance()->load_lib(
-                    'Messages_Generator',
-                    array(),
-                    false,
-                    false
-                );
-            },
-            'EE_Messages_Template_Defaults'        => function ($arguments = array()) {
-                return EE_Registry::instance()->load_lib(
-                    'Messages_Template_Defaults',
-                    $arguments,
-                    false,
-                    false
-                );
-            },
-            //load_model
-            // 'EEM_Attendee'                         => 'load_model',
-            // 'EEM_Message_Template_Group'           => 'load_model',
-            // 'EEM_Message_Template'                 => 'load_model',
-            //load_helper
-            'EEH_Parse_Shortcodes'                 => function () {
-                if (EE_Registry::instance()->load_helper('Parse_Shortcodes')) {
-                    return new EEH_Parse_Shortcodes();
-                }
-                return null;
-            },
-            'EE_Template_Config'                   => function () {
-                return EE_Config::instance()->template_settings;
-            },
-            'EE_Currency_Config'                   => function () {
-                return EE_Config::instance()->currency;
-            },
-            'EventEspresso\core\services\loaders\Loader' => function () use (&$loader) {
-                return $loader;
-            },
-        );
-    }
-
-
-
-    /**
-     * can be used for supplying alternate names for classes,
-     * or for connecting interface names to instantiable classes
-     */
-    protected function _register_core_aliases()
-    {
-        $this->_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',
-            'CreateRegCodeCommandHandler'                                         => 'EventEspresso\core\services\commands\registration\CreateRegCodeCommand',
-            'CreateRegUrlLinkCommandHandler'                                      => 'EventEspresso\core\services\commands\registration\CreateRegUrlLinkCommand',
-            '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',
-            'TableManager'                                                        => 'EventEspresso\core\services\database\TableManager',
-            'TableAnalysis'                                                       => 'EventEspresso\core\services\database\TableAnalysis',
-            'CreateTransactionCommandHandler'                                     => 'EventEspresso\core\services\commands\transaction\CreateTransactionCommandHandler',
-            'CreateAttendeeCommandHandler'                                        => 'EventEspresso\core\services\commands\attendee\CreateAttendeeCommandHandler',
-            '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',
-            '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',
-        );
-    }
-
-
-
-    /**
-     * 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.
-     *
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     * @throws InvalidArgumentException
-     */
-    public function reset()
-    {
-        $this->_register_core_class_loaders();
-        $this->_register_core_dependencies();
-    }
+	/**
+	 * 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;
+
+	/**
+	 * @type EE_Request $request
+	 */
+	protected $_request;
+
+	/**
+	 * @type EE_Response $response
+	 */
+	protected $_response;
+
+	/**
+	 * @type LoaderInterface $loader
+	 */
+	protected $loader;
+
+	/**
+	 * @type array $_dependency_map
+	 */
+	protected $_dependency_map = array();
+
+	/**
+	 * @type array $_class_loaders
+	 */
+	protected $_class_loaders = array();
+
+	/**
+	 * @type array $_aliases
+	 */
+	protected $_aliases = array();
+
+
+
+	/**
+	 * EE_Dependency_Map constructor.
+	 *
+	 * @param EE_Request  $request
+	 * @param EE_Response $response
+	 */
+	protected function __construct(EE_Request $request, EE_Response $response)
+	{
+		$this->_request = $request;
+		$this->_response = $response;
+		add_action('EE_Load_Espresso_Core__handle_request__initialize_core_loading', array($this, 'initialize'));
+		do_action('EE_Dependency_Map____construct');
+	}
+
+
+
+	/**
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidArgumentException
+	 */
+	public function initialize()
+	{
+		$this->_register_core_dependencies();
+		$this->_register_core_class_loaders();
+		$this->_register_core_aliases();
+	}
+
+
+
+	/**
+	 * @singleton method used to instantiate class object
+	 * @access    public
+	 * @param EE_Request  $request
+	 * @param EE_Response $response
+	 * @return EE_Dependency_Map
+	 */
+	public static function instance(EE_Request $request = null, EE_Response $response = null)
+	{
+		// check if class object is instantiated, and instantiated properly
+		if (! self::$_instance instanceof EE_Dependency_Map) {
+			self::$_instance = new EE_Dependency_Map($request, $response);
+		}
+		return self::$_instance;
+	}
+
+
+
+	/**
+	 * @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[ $class ] = array();
+		}
+		// we need to make sure that any aliases used when registering a dependency
+		// get resolved to the correct class name
+		foreach ((array)$dependencies as $dependency => $load_source) {
+			$alias = self::$_instance->get_alias($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->get_alias($class_name);
+		if (! isset(self::$_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 = $this->get_alias($dependency);
+		return isset($this->_dependency_map[$class_name], $this->_dependency_map[$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 = $this->get_alias($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 = $this->get_alias($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 $class_name 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 $for_class  the class that has the dependency (is type hinting for the interface)
+	 */
+	public function add_alias($class_name, $alias, $for_class = '')
+	{
+		if ($for_class !== '') {
+			if (! isset($this->_aliases[$for_class])) {
+				$this->_aliases[$for_class] = array();
+			}
+			$this->_aliases[$for_class][$class_name] = $alias;
+		}
+		$this->_aliases[$class_name] = $alias;
+	}
+
+
+
+	/**
+	 * returns TRUE if the provided class name has an alias
+	 *
+	 * @param string $class_name
+	 * @param string $for_class
+	 * @return bool
+	 */
+	public function has_alias($class_name = '', $for_class = '')
+	{
+		return isset($this->_aliases[$for_class], $this->_aliases[$for_class][$class_name])
+			   || (
+				   isset($this->_aliases[$class_name])
+				   && ! is_array($this->_aliases[$class_name])
+			   );
+	}
+
+
+
+	/**
+	 * returns alias for class name if one exists, otherwise returns the original classname
+	 * functions recursively, so that multiple aliases can be used to drill down to a classname
+	 *  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 $class_name
+	 * @param string $for_class
+	 * @return string
+	 */
+	public function get_alias($class_name = '', $for_class = '')
+	{
+		if (! $this->has_alias($class_name, $for_class)) {
+			return $class_name;
+		}
+		if ($for_class !== '' && isset($this->_aliases[ $for_class ][ $class_name ])) {
+			return $this->get_alias($this->_aliases[$for_class][$class_name], $for_class);
+		}
+		return $this->get_alias($this->_aliases[$class_name]);
+	}
+
+
+
+	/**
+	 * 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,
+			),
+			'EE_Session'                                                                                                  => array(
+				'EventEspresso\core\services\cache\TransientCacheStorage' => 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\Registry'                                                                 => array(
+				'EE_Template_Config' => EE_Dependency_Map::load_from_cache,
+				'EE_Currency_Config' => 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\services\orm\ModelFieldFactory'                                                   => array(
+				'EventEspresso\core\services\loaders\Loader'              => EE_Dependency_Map::load_from_cache,
+			),
+			'LEGACY_MODELS'                                                   => array(
+				null,
+				'EventEspresso\core\services\orm\ModelFieldFactory' => EE_Dependency_Map::load_from_cache,
+			),
+			'EE_Module_Request_Router' => array(
+				'EE_Request' => 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();
+	 *        },
+	 *
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidArgumentException
+	 */
+	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;
+		$loader = &$this->loader;
+		$this->_class_loaders = array(
+			//load_core
+			'EE_Capabilities'                      => 'load_core',
+			'EE_Encryption'                        => 'load_core',
+			'EE_Front_Controller'                  => 'load_core',
+			'EE_Module_Request_Router'             => 'load_core',
+			'EE_Registry'                          => 'load_core',
+			'EE_Request'                           => function () use (&$request) {
+				return $request;
+			},
+			'EE_Response'                          => function () use (&$response) {
+				return $response;
+			},
+			'EE_Request_Handler'                   => 'load_core',
+			'EE_Session'                           => 'load_core',
+			'EE_Cron_Tasks'                        => 'load_core',
+			//load_lib
+			'EE_Message_Resource_Manager'          => 'load_lib',
+			'EE_Message_Type_Collection'           => 'load_lib',
+			'EE_Message_Type_Collection_Loader'    => 'load_lib',
+			'EE_Messenger_Collection'              => 'load_lib',
+			'EE_Messenger_Collection_Loader'       => 'load_lib',
+			'EE_Messages_Processor'                => 'load_lib',
+			'EE_Message_Repository'                => 'load_lib',
+			'EE_Messages_Queue'                    => 'load_lib',
+			'EE_Messages_Data_Handler_Collection'  => 'load_lib',
+			'EE_Message_Template_Group_Collection' => 'load_lib',
+			'EE_Messages_Generator'                => function () {
+				return EE_Registry::instance()->load_lib(
+					'Messages_Generator',
+					array(),
+					false,
+					false
+				);
+			},
+			'EE_Messages_Template_Defaults'        => function ($arguments = array()) {
+				return EE_Registry::instance()->load_lib(
+					'Messages_Template_Defaults',
+					$arguments,
+					false,
+					false
+				);
+			},
+			//load_model
+			// 'EEM_Attendee'                         => 'load_model',
+			// 'EEM_Message_Template_Group'           => 'load_model',
+			// 'EEM_Message_Template'                 => 'load_model',
+			//load_helper
+			'EEH_Parse_Shortcodes'                 => function () {
+				if (EE_Registry::instance()->load_helper('Parse_Shortcodes')) {
+					return new EEH_Parse_Shortcodes();
+				}
+				return null;
+			},
+			'EE_Template_Config'                   => function () {
+				return EE_Config::instance()->template_settings;
+			},
+			'EE_Currency_Config'                   => function () {
+				return EE_Config::instance()->currency;
+			},
+			'EventEspresso\core\services\loaders\Loader' => function () use (&$loader) {
+				return $loader;
+			},
+		);
+	}
+
+
+
+	/**
+	 * can be used for supplying alternate names for classes,
+	 * or for connecting interface names to instantiable classes
+	 */
+	protected function _register_core_aliases()
+	{
+		$this->_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',
+			'CreateRegCodeCommandHandler'                                         => 'EventEspresso\core\services\commands\registration\CreateRegCodeCommand',
+			'CreateRegUrlLinkCommandHandler'                                      => 'EventEspresso\core\services\commands\registration\CreateRegUrlLinkCommand',
+			'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',
+			'TableManager'                                                        => 'EventEspresso\core\services\database\TableManager',
+			'TableAnalysis'                                                       => 'EventEspresso\core\services\database\TableAnalysis',
+			'CreateTransactionCommandHandler'                                     => 'EventEspresso\core\services\commands\transaction\CreateTransactionCommandHandler',
+			'CreateAttendeeCommandHandler'                                        => 'EventEspresso\core\services\commands\attendee\CreateAttendeeCommandHandler',
+			'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',
+			'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',
+		);
+	}
+
+
+
+	/**
+	 * 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.
+	 *
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidArgumentException
+	 */
+	public function reset()
+	{
+		$this->_register_core_class_loaders();
+		$this->_register_core_dependencies();
+	}
 
 
 }

core/EE_Load_Espresso_Core.core.php

Spacing +12 added lines, -12 removed lines

@@ -3,7 +3,7 @@ 
 use EventEspresso\core\exceptions\InvalidInterfaceException;
 use EventEspresso\core\services\loaders\LoaderFactory;
 
-if (! defined('EVENT_ESPRESSO_VERSION')) {
+if ( ! defined('EVENT_ESPRESSO_VERSION')) {
     exit('No direct script access allowed');
 }
 
@@ -51,7 +51,7 @@ 
      */
     public function __construct()
     {
-        espresso_load_required('EventEspresso\core\Factory', EE_CORE . 'Factory.php');
+        espresso_load_required('EventEspresso\core\Factory', EE_CORE.'Factory.php');
     }
 
 
@@ -105,9 +105,9 @@ 
         $this->_load_class_tools();
         // load interfaces
         espresso_load_required('EEI_Payment_Method_Interfaces',
-            EE_LIBRARIES . 'payment_methods' . DS . 'EEI_Payment_Method_Interfaces.php');
+            EE_LIBRARIES.'payment_methods'.DS.'EEI_Payment_Method_Interfaces.php');
         // deprecated functions
-        espresso_load_required('EE_Deprecated', EE_CORE . 'EE_Deprecated.core.php');
+        espresso_load_required('EE_Deprecated', EE_CORE.'EE_Deprecated.core.php');
         // WP cron jobs
         $loader->getShared('EE_Cron_Tasks');
         $loader->getShared('EE_Request_Handler');
@@ -143,7 +143,7 @@ 
      */
     public function dependency_map()
     {
-        if (! $this->dependency_map instanceof EE_Dependency_Map) {
+        if ( ! $this->dependency_map instanceof EE_Dependency_Map) {
             throw new EE_Error(
                 sprintf(
                     __('Invalid EE_Dependency_Map: "%1$s"', 'event_espresso'),
@@ -162,7 +162,7 @@ 
      */
     public function registry()
     {
-        if (! $this->registry instanceof EE_Registry) {
+        if ( ! $this->registry instanceof EE_Registry) {
             throw new EE_Error(
                 sprintf(
                     __('Invalid EE_Registry: "%1$s"', 'event_espresso'),
@@ -180,14 +180,14 @@ 
      */
     private function _load_dependency_map()
     {
-        if (! is_readable(EE_CORE . 'EE_Dependency_Map.core.php')) {
+        if ( ! is_readable(EE_CORE.'EE_Dependency_Map.core.php')) {
             EE_Error::add_error(
                 __('The EE_Dependency_Map core class could not be loaded.', 'event_espresso'),
                 __FILE__, __FUNCTION__, __LINE__
             );
             wp_die(EE_Error::get_notices());
         }
-        require_once(EE_CORE . 'EE_Dependency_Map.core.php');
+        require_once(EE_CORE.'EE_Dependency_Map.core.php');
         return EE_Dependency_Map::instance($this->request, $this->response);
     }
 
@@ -198,14 +198,14 @@ 
      */
     private function _load_registry()
     {
-        if (! is_readable(EE_CORE . 'EE_Registry.core.php')) {
+        if ( ! is_readable(EE_CORE.'EE_Registry.core.php')) {
             EE_Error::add_error(
                 __('The EE_Registry core class could not be loaded.', 'event_espresso'),
                 __FILE__, __FUNCTION__, __LINE__
             );
             wp_die(EE_Error::get_notices());
         }
-        require_once(EE_CORE . 'EE_Registry.core.php');
+        require_once(EE_CORE.'EE_Registry.core.php');
         return EE_Registry::instance($this->dependency_map);
     }
 
@@ -216,13 +216,13 @@ 
      */
     private function _load_class_tools()
     {
-        if (! is_readable(EE_HELPERS . 'EEH_Class_Tools.helper.php')) {
+        if ( ! is_readable(EE_HELPERS.'EEH_Class_Tools.helper.php')) {
             EE_Error::add_error(
                 __('The EEH_Class_Tools helper could not be loaded.', 'event_espresso'),
                 __FILE__, __FUNCTION__, __LINE__
             );
         }
-        require_once(EE_HELPERS . 'EEH_Class_Tools.helper.php');
+        require_once(EE_HELPERS.'EEH_Class_Tools.helper.php');
     }
 
 

Indentation +203 added lines, -203 removed lines

@@ -4,7 +4,7 @@ 
 use EventEspresso\core\services\loaders\LoaderFactory;
 
 if (! defined('EVENT_ESPRESSO_VERSION')) {
-    exit('No direct script access allowed');
+	exit('No direct script access allowed');
 }
 
 
@@ -24,208 +24,208 @@ 
 class EE_Load_Espresso_Core implements EEI_Request_Decorator, EEI_Request_Stack_Core_App
 {
 
-    /**
-     * @var EE_Request $request
-     */
-    protected $request;
-
-    /**
-     * @var EE_Response $response
-     */
-    protected $response;
-
-    /**
-     * @var EE_Dependency_Map $dependency_map
-     */
-    protected $dependency_map;
-
-    /**
-     * @var EE_Registry $registry
-     */
-    protected $registry;
-
-
-
-    /**
-     * EE_Load_Espresso_Core constructor
-     */
-    public function __construct()
-    {
-        espresso_load_required('EventEspresso\core\Factory', EE_CORE . 'Factory.php');
-    }
-
-
-
-    /**
-     * handle
-     * sets hooks for running rest of system
-     * provides "AHEE__EE_System__construct__complete" hook for EE Addons to use as their starting point
-     * starting EE Addons from any other point may lead to problems
-     *
-     * @param EE_Request  $request
-     * @param EE_Response $response
-     * @return EE_Response
-     * @throws EE_Error
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     * @throws InvalidArgumentException
-     */
-    public function handle_request(EE_Request $request, EE_Response $response)
-    {
-        $this->request = $request;
-        $this->response = $response;
-        // info about how to load classes required by other classes
-        $this->dependency_map = $this->_load_dependency_map();
-        // central repository for classes
-        $this->registry = $this->_load_registry();
-        // PSR4 Autoloaders
-        $this->registry->load_core('EE_Psr4AutoloaderInit');
-        do_action('EE_Load_Espresso_Core__handle_request__initialize_core_loading');
-        $loader = LoaderFactory::getLoader($this->registry);
-        $this->dependency_map->setLoader($loader);
-        // build DI container
-        // $OpenCoffeeShop = new EventEspresso\core\services\container\OpenCoffeeShop();
-        // $OpenCoffeeShop->addRecipes();
-        // $CoffeeShop = $OpenCoffeeShop->CoffeeShop();
-        // workarounds for PHP < 5.3
-        $this->_load_class_tools();
-        // load interfaces
-        espresso_load_required('EEI_Payment_Method_Interfaces',
-            EE_LIBRARIES . 'payment_methods' . DS . 'EEI_Payment_Method_Interfaces.php');
-        // deprecated functions
-        espresso_load_required('EE_Deprecated', EE_CORE . 'EE_Deprecated.core.php');
-        // WP cron jobs
-        $loader->getShared('EE_Cron_Tasks');
-        $loader->getShared('EE_Request_Handler');
-        $loader->getShared('EE_System');
-        return $this->response;
-    }
-
-
-
-    /**
-     * @return EE_Request
-     */
-    public function request()
-    {
-        return $this->request;
-    }
-
-
-
-    /**
-     * @return EE_Response
-     */
-    public function response()
-    {
-        return $this->response;
-    }
-
-
-
-    /**
-     * @return EE_Dependency_Map
-     * @throws EE_Error
-     */
-    public function dependency_map()
-    {
-        if (! $this->dependency_map instanceof EE_Dependency_Map) {
-            throw new EE_Error(
-                sprintf(
-                    __('Invalid EE_Dependency_Map: "%1$s"', 'event_espresso'),
-                    print_r($this->dependency_map, true)
-                )
-            );
-        }
-        return $this->dependency_map;
-    }
-
-
-
-    /**
-     * @return EE_Registry
-     * @throws EE_Error
-     */
-    public function registry()
-    {
-        if (! $this->registry instanceof EE_Registry) {
-            throw new EE_Error(
-                sprintf(
-                    __('Invalid EE_Registry: "%1$s"', 'event_espresso'),
-                    print_r($this->registry, true)
-                )
-            );
-        }
-        return $this->registry;
-    }
-
-
-
-    /**
-     * @return EE_Dependency_Map
-     */
-    private function _load_dependency_map()
-    {
-        if (! is_readable(EE_CORE . 'EE_Dependency_Map.core.php')) {
-            EE_Error::add_error(
-                __('The EE_Dependency_Map core class could not be loaded.', 'event_espresso'),
-                __FILE__, __FUNCTION__, __LINE__
-            );
-            wp_die(EE_Error::get_notices());
-        }
-        require_once(EE_CORE . 'EE_Dependency_Map.core.php');
-        return EE_Dependency_Map::instance($this->request, $this->response);
-    }
-
-
-
-    /**
-     * @return EE_Registry
-     */
-    private function _load_registry()
-    {
-        if (! is_readable(EE_CORE . 'EE_Registry.core.php')) {
-            EE_Error::add_error(
-                __('The EE_Registry core class could not be loaded.', 'event_espresso'),
-                __FILE__, __FUNCTION__, __LINE__
-            );
-            wp_die(EE_Error::get_notices());
-        }
-        require_once(EE_CORE . 'EE_Registry.core.php');
-        return EE_Registry::instance($this->dependency_map);
-    }
-
-
-
-    /**
-     * @return void
-     */
-    private function _load_class_tools()
-    {
-        if (! is_readable(EE_HELPERS . 'EEH_Class_Tools.helper.php')) {
-            EE_Error::add_error(
-                __('The EEH_Class_Tools helper could not be loaded.', 'event_espresso'),
-                __FILE__, __FUNCTION__, __LINE__
-            );
-        }
-        require_once(EE_HELPERS . 'EEH_Class_Tools.helper.php');
-    }
-
-
-
-    /**
-     * called after the request stack has been fully processed
-     * if any of the middleware apps has requested the plugin be deactivated, then we do that now
-     *
-     * @param EE_Request  $request
-     * @param EE_Response $response
-     */
-    public function handle_response(EE_Request $request, EE_Response $response)
-    {
-        if ($response->plugin_deactivated()) {
-            espresso_deactivate_plugin(EE_PLUGIN_BASENAME);
-        }
-    }
+	/**
+	 * @var EE_Request $request
+	 */
+	protected $request;
+
+	/**
+	 * @var EE_Response $response
+	 */
+	protected $response;
+
+	/**
+	 * @var EE_Dependency_Map $dependency_map
+	 */
+	protected $dependency_map;
+
+	/**
+	 * @var EE_Registry $registry
+	 */
+	protected $registry;
+
+
+
+	/**
+	 * EE_Load_Espresso_Core constructor
+	 */
+	public function __construct()
+	{
+		espresso_load_required('EventEspresso\core\Factory', EE_CORE . 'Factory.php');
+	}
+
+
+
+	/**
+	 * handle
+	 * sets hooks for running rest of system
+	 * provides "AHEE__EE_System__construct__complete" hook for EE Addons to use as their starting point
+	 * starting EE Addons from any other point may lead to problems
+	 *
+	 * @param EE_Request  $request
+	 * @param EE_Response $response
+	 * @return EE_Response
+	 * @throws EE_Error
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidArgumentException
+	 */
+	public function handle_request(EE_Request $request, EE_Response $response)
+	{
+		$this->request = $request;
+		$this->response = $response;
+		// info about how to load classes required by other classes
+		$this->dependency_map = $this->_load_dependency_map();
+		// central repository for classes
+		$this->registry = $this->_load_registry();
+		// PSR4 Autoloaders
+		$this->registry->load_core('EE_Psr4AutoloaderInit');
+		do_action('EE_Load_Espresso_Core__handle_request__initialize_core_loading');
+		$loader = LoaderFactory::getLoader($this->registry);
+		$this->dependency_map->setLoader($loader);
+		// build DI container
+		// $OpenCoffeeShop = new EventEspresso\core\services\container\OpenCoffeeShop();
+		// $OpenCoffeeShop->addRecipes();
+		// $CoffeeShop = $OpenCoffeeShop->CoffeeShop();
+		// workarounds for PHP < 5.3
+		$this->_load_class_tools();
+		// load interfaces
+		espresso_load_required('EEI_Payment_Method_Interfaces',
+			EE_LIBRARIES . 'payment_methods' . DS . 'EEI_Payment_Method_Interfaces.php');
+		// deprecated functions
+		espresso_load_required('EE_Deprecated', EE_CORE . 'EE_Deprecated.core.php');
+		// WP cron jobs
+		$loader->getShared('EE_Cron_Tasks');
+		$loader->getShared('EE_Request_Handler');
+		$loader->getShared('EE_System');
+		return $this->response;
+	}
+
+
+
+	/**
+	 * @return EE_Request
+	 */
+	public function request()
+	{
+		return $this->request;
+	}
+
+
+
+	/**
+	 * @return EE_Response
+	 */
+	public function response()
+	{
+		return $this->response;
+	}
+
+
+
+	/**
+	 * @return EE_Dependency_Map
+	 * @throws EE_Error
+	 */
+	public function dependency_map()
+	{
+		if (! $this->dependency_map instanceof EE_Dependency_Map) {
+			throw new EE_Error(
+				sprintf(
+					__('Invalid EE_Dependency_Map: "%1$s"', 'event_espresso'),
+					print_r($this->dependency_map, true)
+				)
+			);
+		}
+		return $this->dependency_map;
+	}
+
+
+
+	/**
+	 * @return EE_Registry
+	 * @throws EE_Error
+	 */
+	public function registry()
+	{
+		if (! $this->registry instanceof EE_Registry) {
+			throw new EE_Error(
+				sprintf(
+					__('Invalid EE_Registry: "%1$s"', 'event_espresso'),
+					print_r($this->registry, true)
+				)
+			);
+		}
+		return $this->registry;
+	}
+
+
+
+	/**
+	 * @return EE_Dependency_Map
+	 */
+	private function _load_dependency_map()
+	{
+		if (! is_readable(EE_CORE . 'EE_Dependency_Map.core.php')) {
+			EE_Error::add_error(
+				__('The EE_Dependency_Map core class could not be loaded.', 'event_espresso'),
+				__FILE__, __FUNCTION__, __LINE__
+			);
+			wp_die(EE_Error::get_notices());
+		}
+		require_once(EE_CORE . 'EE_Dependency_Map.core.php');
+		return EE_Dependency_Map::instance($this->request, $this->response);
+	}
+
+
+
+	/**
+	 * @return EE_Registry
+	 */
+	private function _load_registry()
+	{
+		if (! is_readable(EE_CORE . 'EE_Registry.core.php')) {
+			EE_Error::add_error(
+				__('The EE_Registry core class could not be loaded.', 'event_espresso'),
+				__FILE__, __FUNCTION__, __LINE__
+			);
+			wp_die(EE_Error::get_notices());
+		}
+		require_once(EE_CORE . 'EE_Registry.core.php');
+		return EE_Registry::instance($this->dependency_map);
+	}
+
+
+
+	/**
+	 * @return void
+	 */
+	private function _load_class_tools()
+	{
+		if (! is_readable(EE_HELPERS . 'EEH_Class_Tools.helper.php')) {
+			EE_Error::add_error(
+				__('The EEH_Class_Tools helper could not be loaded.', 'event_espresso'),
+				__FILE__, __FUNCTION__, __LINE__
+			);
+		}
+		require_once(EE_HELPERS . 'EEH_Class_Tools.helper.php');
+	}
+
+
+
+	/**
+	 * called after the request stack has been fully processed
+	 * if any of the middleware apps has requested the plugin be deactivated, then we do that now
+	 *
+	 * @param EE_Request  $request
+	 * @param EE_Response $response
+	 */
+	public function handle_response(EE_Request $request, EE_Response $response)
+	{
+		if ($response->plugin_deactivated()) {
+			espresso_deactivate_plugin(EE_PLUGIN_BASENAME);
+		}
+	}
 
 
 

core/db_models/EEM_Transaction.model.php

Indentation +363 added lines, -363 removed lines

@@ -1,7 +1,7 @@ 
 <?php
 
 if ( ! defined('EVENT_ESPRESSO_VERSION')) {
-    exit('No direct script access allowed');
+	exit('No direct script access allowed');
 }
 require_once(EE_MODELS . 'EEM_Base.model.php');
 
@@ -17,193 +17,193 @@ 
 class EEM_Transaction extends EEM_Base
 {
 
-    // private instance of the Transaction object
-    protected static $_instance;
-
-    /**
-     * Status ID(STS_ID on esp_status table) to indicate the transaction is complete,
-     * but payment is pending. This is the state for transactions where payment is promised
-     * from an offline gateway.
-     */
-    //	const open_status_code = 'TPN';
-
-    /**
-     * Status ID(STS_ID on esp_status table) to indicate the transaction failed,
-     * either due to a technical reason (server or computer crash during registration),
-     *  or some other reason that prevent the collection of any useful contact information from any of the registrants
-     */
-    const failed_status_code = 'TFL';
-
-    /**
-     * Status ID(STS_ID on esp_status table) to indicate the transaction was abandoned,
-     * either due to a technical reason (server or computer crash during registration),
-     * or due to an abandoned cart after registrant chose not to complete the registration process
-     * HOWEVER...
-     * an abandoned TXN differs from a failed TXN in that it was able to capture contact information for at least one
-     * registrant
-     */
-    const abandoned_status_code = 'TAB';
-
-    /**
-     * Status ID(STS_ID on esp_status table) to indicate an incomplete transaction,
-     * meaning that monies are still owing: TXN_paid < TXN_total
-     */
-    const incomplete_status_code = 'TIN';
-
-    /**
-     * Status ID (STS_ID on esp_status table) to indicate a complete transaction.
-     * meaning that NO monies are owing: TXN_paid == TXN_total
-     */
-    const complete_status_code = 'TCM';
-
-    /**
-     *  Status ID(STS_ID on esp_status table) to indicate the transaction is overpaid.
-     *  This is the same as complete, but site admins actually owe clients the moneys!  TXN_paid > TXN_total
-     */
-    const overpaid_status_code = 'TOP';
-
-
-    /**
-     *    private constructor to prevent direct creation
-     *
-     * @Constructor
-     * @access protected
-     *
-     * @param string $timezone string representing the timezone we want to set for returned Date Time Strings (and any
-     *                         incoming timezone data that gets saved). Note this just sends the timezone info to the
-     *                         date time model field objects.  Default is NULL (and will be assumed using the set
-     *                         timezone in the 'timezone_string' wp option)
-     *
-     * @return EEM_Transaction
-     * @throws \EE_Error
-     */
-    protected function __construct($timezone)
-    {
-        $this->singular_item = __('Transaction', 'event_espresso');
-        $this->plural_item   = __('Transactions', 'event_espresso');
-
-        $this->_tables                 = array(
-            'TransactionTable' => new EE_Primary_Table('esp_transaction', 'TXN_ID')
-        );
-        $this->_fields                 = array(
-            'TransactionTable' => array(
-                'TXN_ID'           => new EE_Primary_Key_Int_Field('TXN_ID', __('Transaction ID', 'event_espresso')),
-                'TXN_timestamp'    => new EE_Datetime_Field('TXN_timestamp',
-                    __('date when transaction was created', 'event_espresso'), false, EE_Datetime_Field::now,
-                    $timezone),
-                'TXN_total'        => new EE_Money_Field('TXN_total',
-                    __('Total value of Transaction', 'event_espresso'), false, 0),
-                'TXN_paid'         => new EE_Money_Field('TXN_paid',
-                    __('Amount paid towards transaction to date', 'event_espresso'), false, 0),
-                'STS_ID'           => new EE_Foreign_Key_String_Field('STS_ID', __('Status ID', 'event_espresso'),
-                    false, EEM_Transaction::failed_status_code, 'Status'),
-                'TXN_session_data' => new EE_Serialized_Text_Field('TXN_session_data',
-                    __('Serialized session data', 'event_espresso'), true, ''),
-                'TXN_hash_salt'    => new EE_Plain_Text_Field('TXN_hash_salt',
-                    __('Transaction Hash Salt', 'event_espresso'), true, ''),
-                'PMD_ID'           => new EE_Foreign_Key_Int_Field('PMD_ID',
-                    __("Last Used Payment Method", 'event_espresso'), true, null, 'Payment_Method'),
-                'TXN_reg_steps'    => new EE_Serialized_Text_Field('TXN_reg_steps',
-                    __('Registration Steps', 'event_espresso'), false, array()),
-            )
-        );
-        $this->_model_relations        = array(
-            'Registration'   => new EE_Has_Many_Relation(),
-            'Payment'        => new EE_Has_Many_Relation(),
-            'Status'         => new EE_Belongs_To_Relation(),
-            'Line_Item'      => new EE_Has_Many_Relation(false),
-            //you can delete a transaction without needing to delete its line items
-            'Payment_Method' => new EE_Belongs_To_Relation(),
-            'Message'        => new EE_Has_Many_Relation()
-        );
-        $this->_model_chain_to_wp_user = 'Registration.Event';
-        parent::__construct($timezone);
-
-    }
-
-
-    /**
-     *    txn_status_array
-     * get list of transaction statuses
-     *
-     * @access public
-     * @return array
-     */
-    public static function txn_status_array()
-    {
-        return apply_filters(
-            'FHEE__EEM_Transaction__txn_status_array',
-            array(
-                EEM_Transaction::overpaid_status_code,
-                EEM_Transaction::complete_status_code,
-                EEM_Transaction::incomplete_status_code,
-                EEM_Transaction::abandoned_status_code,
-                EEM_Transaction::failed_status_code,
-            )
-        );
-    }
-
-    /**
-     *        get the revenue per day  for the Transaction Admin page Reports Tab
-     *
-     * @access        public
-     *
-     * @param string $period
-     *
-     * @return \stdClass[]
-     */
-    public function get_revenue_per_day_report($period = '-1 month')
-    {
-        $sql_date = $this->convert_datetime_for_query('TXN_timestamp', date('Y-m-d H:i:s', strtotime($period)),
-            'Y-m-d H:i:s', 'UTC');
-
-        $query_interval = EEH_DTT_Helper::get_sql_query_interval_for_offset($this->get_timezone(), 'TXN_timestamp');
-
-        return $this->_get_all_wpdb_results(
-            array(
-                array(
-                    'TXN_timestamp' => array('>=', $sql_date)
-                ),
-                'group_by' => 'txnDate',
-                'order_by' => array('TXN_timestamp' => 'ASC')
-            ),
-            OBJECT,
-            array(
-                'txnDate' => array('DATE(' . $query_interval . ')', '%s'),
-                'revenue' => array('SUM(TransactionTable.TXN_paid)', '%d')
-            )
-        );
-    }
-
-
-    /**
-     *        get the revenue per event  for the Transaction Admin page Reports Tab
-     *
-     * @access        public
-     *
-     * @param string $period
-     *
-     * @throws \EE_Error
-     * @return mixed
-     */
-    public function get_revenue_per_event_report($period = '-1 month')
-    {
-        global $wpdb;
-        $transaction_table          = $wpdb->prefix . 'esp_transaction';
-        $registration_table         = $wpdb->prefix . 'esp_registration';
-        $registration_payment_table = $wpdb->prefix . 'esp_registration_payment';
-        $event_table                = $wpdb->posts;
-        $payment_table              = $wpdb->prefix . 'esp_payment';
-        $sql_date                   = date('Y-m-d H:i:s', strtotime($period));
-        $approved_payment_status    = EEM_Payment::status_id_approved;
-        $extra_event_on_join        = '';
-        //exclude events not authored by user if permissions in effect
-        if ( ! EE_Registry::instance()->CAP->current_user_can('ee_read_others_registrations', 'reg_per_event_report')) {
-            $extra_event_on_join = ' AND Event.post_author = ' . get_current_user_id();
-        }
-
-        return $wpdb->get_results(
-            "SELECT
+	// private instance of the Transaction object
+	protected static $_instance;
+
+	/**
+	 * Status ID(STS_ID on esp_status table) to indicate the transaction is complete,
+	 * but payment is pending. This is the state for transactions where payment is promised
+	 * from an offline gateway.
+	 */
+	//	const open_status_code = 'TPN';
+
+	/**
+	 * Status ID(STS_ID on esp_status table) to indicate the transaction failed,
+	 * either due to a technical reason (server or computer crash during registration),
+	 *  or some other reason that prevent the collection of any useful contact information from any of the registrants
+	 */
+	const failed_status_code = 'TFL';
+
+	/**
+	 * Status ID(STS_ID on esp_status table) to indicate the transaction was abandoned,
+	 * either due to a technical reason (server or computer crash during registration),
+	 * or due to an abandoned cart after registrant chose not to complete the registration process
+	 * HOWEVER...
+	 * an abandoned TXN differs from a failed TXN in that it was able to capture contact information for at least one
+	 * registrant
+	 */
+	const abandoned_status_code = 'TAB';
+
+	/**
+	 * Status ID(STS_ID on esp_status table) to indicate an incomplete transaction,
+	 * meaning that monies are still owing: TXN_paid < TXN_total
+	 */
+	const incomplete_status_code = 'TIN';
+
+	/**
+	 * Status ID (STS_ID on esp_status table) to indicate a complete transaction.
+	 * meaning that NO monies are owing: TXN_paid == TXN_total
+	 */
+	const complete_status_code = 'TCM';
+
+	/**
+	 *  Status ID(STS_ID on esp_status table) to indicate the transaction is overpaid.
+	 *  This is the same as complete, but site admins actually owe clients the moneys!  TXN_paid > TXN_total
+	 */
+	const overpaid_status_code = 'TOP';
+
+
+	/**
+	 *    private constructor to prevent direct creation
+	 *
+	 * @Constructor
+	 * @access protected
+	 *
+	 * @param string $timezone string representing the timezone we want to set for returned Date Time Strings (and any
+	 *                         incoming timezone data that gets saved). Note this just sends the timezone info to the
+	 *                         date time model field objects.  Default is NULL (and will be assumed using the set
+	 *                         timezone in the 'timezone_string' wp option)
+	 *
+	 * @return EEM_Transaction
+	 * @throws \EE_Error
+	 */
+	protected function __construct($timezone)
+	{
+		$this->singular_item = __('Transaction', 'event_espresso');
+		$this->plural_item   = __('Transactions', 'event_espresso');
+
+		$this->_tables                 = array(
+			'TransactionTable' => new EE_Primary_Table('esp_transaction', 'TXN_ID')
+		);
+		$this->_fields                 = array(
+			'TransactionTable' => array(
+				'TXN_ID'           => new EE_Primary_Key_Int_Field('TXN_ID', __('Transaction ID', 'event_espresso')),
+				'TXN_timestamp'    => new EE_Datetime_Field('TXN_timestamp',
+					__('date when transaction was created', 'event_espresso'), false, EE_Datetime_Field::now,
+					$timezone),
+				'TXN_total'        => new EE_Money_Field('TXN_total',
+					__('Total value of Transaction', 'event_espresso'), false, 0),
+				'TXN_paid'         => new EE_Money_Field('TXN_paid',
+					__('Amount paid towards transaction to date', 'event_espresso'), false, 0),
+				'STS_ID'           => new EE_Foreign_Key_String_Field('STS_ID', __('Status ID', 'event_espresso'),
+					false, EEM_Transaction::failed_status_code, 'Status'),
+				'TXN_session_data' => new EE_Serialized_Text_Field('TXN_session_data',
+					__('Serialized session data', 'event_espresso'), true, ''),
+				'TXN_hash_salt'    => new EE_Plain_Text_Field('TXN_hash_salt',
+					__('Transaction Hash Salt', 'event_espresso'), true, ''),
+				'PMD_ID'           => new EE_Foreign_Key_Int_Field('PMD_ID',
+					__("Last Used Payment Method", 'event_espresso'), true, null, 'Payment_Method'),
+				'TXN_reg_steps'    => new EE_Serialized_Text_Field('TXN_reg_steps',
+					__('Registration Steps', 'event_espresso'), false, array()),
+			)
+		);
+		$this->_model_relations        = array(
+			'Registration'   => new EE_Has_Many_Relation(),
+			'Payment'        => new EE_Has_Many_Relation(),
+			'Status'         => new EE_Belongs_To_Relation(),
+			'Line_Item'      => new EE_Has_Many_Relation(false),
+			//you can delete a transaction without needing to delete its line items
+			'Payment_Method' => new EE_Belongs_To_Relation(),
+			'Message'        => new EE_Has_Many_Relation()
+		);
+		$this->_model_chain_to_wp_user = 'Registration.Event';
+		parent::__construct($timezone);
+
+	}
+
+
+	/**
+	 *    txn_status_array
+	 * get list of transaction statuses
+	 *
+	 * @access public
+	 * @return array
+	 */
+	public static function txn_status_array()
+	{
+		return apply_filters(
+			'FHEE__EEM_Transaction__txn_status_array',
+			array(
+				EEM_Transaction::overpaid_status_code,
+				EEM_Transaction::complete_status_code,
+				EEM_Transaction::incomplete_status_code,
+				EEM_Transaction::abandoned_status_code,
+				EEM_Transaction::failed_status_code,
+			)
+		);
+	}
+
+	/**
+	 *        get the revenue per day  for the Transaction Admin page Reports Tab
+	 *
+	 * @access        public
+	 *
+	 * @param string $period
+	 *
+	 * @return \stdClass[]
+	 */
+	public function get_revenue_per_day_report($period = '-1 month')
+	{
+		$sql_date = $this->convert_datetime_for_query('TXN_timestamp', date('Y-m-d H:i:s', strtotime($period)),
+			'Y-m-d H:i:s', 'UTC');
+
+		$query_interval = EEH_DTT_Helper::get_sql_query_interval_for_offset($this->get_timezone(), 'TXN_timestamp');
+
+		return $this->_get_all_wpdb_results(
+			array(
+				array(
+					'TXN_timestamp' => array('>=', $sql_date)
+				),
+				'group_by' => 'txnDate',
+				'order_by' => array('TXN_timestamp' => 'ASC')
+			),
+			OBJECT,
+			array(
+				'txnDate' => array('DATE(' . $query_interval . ')', '%s'),
+				'revenue' => array('SUM(TransactionTable.TXN_paid)', '%d')
+			)
+		);
+	}
+
+
+	/**
+	 *        get the revenue per event  for the Transaction Admin page Reports Tab
+	 *
+	 * @access        public
+	 *
+	 * @param string $period
+	 *
+	 * @throws \EE_Error
+	 * @return mixed
+	 */
+	public function get_revenue_per_event_report($period = '-1 month')
+	{
+		global $wpdb;
+		$transaction_table          = $wpdb->prefix . 'esp_transaction';
+		$registration_table         = $wpdb->prefix . 'esp_registration';
+		$registration_payment_table = $wpdb->prefix . 'esp_registration_payment';
+		$event_table                = $wpdb->posts;
+		$payment_table              = $wpdb->prefix . 'esp_payment';
+		$sql_date                   = date('Y-m-d H:i:s', strtotime($period));
+		$approved_payment_status    = EEM_Payment::status_id_approved;
+		$extra_event_on_join        = '';
+		//exclude events not authored by user if permissions in effect
+		if ( ! EE_Registry::instance()->CAP->current_user_can('ee_read_others_registrations', 'reg_per_event_report')) {
+			$extra_event_on_join = ' AND Event.post_author = ' . get_current_user_id();
+		}
+
+		return $wpdb->get_results(
+			"SELECT
 			Transaction_Event.event_name AS event_name,
 			SUM(Transaction_Event.paid) AS revenue
 			FROM
@@ -230,185 +230,185 @@ 
 					$extra_event_on_join
 				) AS Transaction_Event
 			GROUP BY event_name",
-            OBJECT
-        );
-    }
-
-
-    /**
-     * Gets the current transaction given the reg_url_link, or assumes the reg_url_link is in the
-     * $_REQUEST global variable. Either way, tries to find the current transaction (through
-     * the registration pointed to by reg_url_link), if not returns null
-     *
-     * @param string $reg_url_link
-     *
-     * @return EE_Transaction
-     */
-    public function get_transaction_from_reg_url_link($reg_url_link = '')
-    {
-        return $this->get_one(array(
-            array(
-                'Registration.REG_url_link' => ! empty($reg_url_link) ? $reg_url_link : EE_Registry::instance()->REQ->get('e_reg_url_link',
-                    '')
-            )
-        ));
-    }
-
-
-    /**
-     * Updates the provided EE_Transaction with all the applicable payments
-     * (or fetch the EE_Transaction from its ID)
-     *
-     * @deprecated
-     *
-     * @param EE_Transaction|int $transaction_obj_or_id
-     * @param boolean            $save_txn whether or not to save the transaction during this function call
-     *
-     * @return boolean
-     * @throws \EE_Error
-     */
-    public function update_based_on_payments($transaction_obj_or_id, $save_txn = true)
-    {
-        EE_Error::doing_it_wrong(
-            __CLASS__ . '::' . __FUNCTION__,
-            sprintf(__('This method is deprecated. Please use "%s" instead', 'event_espresso'),
-                'EE_Transaction_Processor::update_transaction_and_registrations_after_checkout_or_payment()'),
-            '4.6.0'
-        );
-        /** @type EE_Transaction_Processor $transaction_processor */
-        $transaction_processor = EE_Registry::instance()->load_class('Transaction_Processor');
-
-        return $transaction_processor->update_transaction_and_registrations_after_checkout_or_payment(
-            $this->ensure_is_obj($transaction_obj_or_id)
-        );
-    }
-
-    /**
-     * Deletes "junk" transactions that were probably added by bots. There might be TONS
-     * of these, so we are very careful to NOT select (which the models do even when deleting),
-     * and so we only use wpdb directly and only do minimal joins.
-     * Transactions are considered "junk" if they're failed for longer than a week.
-     * Also, there is an extra check for payments related to the transaction, because if a transaction has a payment on
-     * it, it's probably not junk (regardless of what status it has).
-     * The downside to this approach is that is addons are listening for object deletions
-     * on EEM_Base::delete() they won't be notified of this.  However, there is an action that plugins can hook into
-     * to catch these types of deletions.
-     *
-     * @global WPDB $wpdb
-     * @return mixed
-     */
-    public function delete_junk_transactions()
-    {
-        /** @type WPDB $wpdb */
-        global $wpdb;
-        $deleted             = false;
-        $time_to_leave_alone = apply_filters(
-            'FHEE__EEM_Transaction__delete_junk_transactions__time_to_leave_alone'
-            , WEEK_IN_SECONDS
-        );
-
-
-        /**
-         * This allows code to filter the query arguments used for retrieving the transaction IDs to delete.
-         * Useful for plugins that want to exclude transactions matching certain query parameters.
-         * The query parameters should be in the format accepted by the EEM_Base model queries.
-         */
-        $ids_query = apply_filters(
-            'FHEE__EEM_Transaction__delete_junk_transactions__initial_query_args',
-            array(
-                0 => array(
-                    'STS_ID'        => EEM_Transaction::failed_status_code,
-                    'Payment.PAY_ID' => array( 'IS NULL' ),
-                    'TXN_timestamp' => array('<', time() - $time_to_leave_alone)
-                )
-            ),
-            $time_to_leave_alone
-        );
-
-
-        /**
-         * This filter is for when code needs to filter the list of transaction ids that represent transactions
-         * about to be deleted based on some other criteria that isn't easily done via the query args filter.
-         */
-        $txn_ids = apply_filters(
-            'FHEE__EEM_Transaction__delete_junk_transactions__transaction_ids_to_delete',
-            EEM_Transaction::instance()->get_col($ids_query, 'TXN_ID'),
-            $time_to_leave_alone
-        );
-        //now that we have the ids to delete
-        if (! empty($txn_ids) && is_array($txn_ids)) {
-            // first, make sure these TXN's are removed the "ee_locked_transactions" array
-            EEM_Transaction::unset_locked_transactions($txn_ids);
-            // let's get deletin'...
-            // Why no wpdb->prepare?  Because the data is trusted.
-            // We got the ids from the original query to get them FROM
-            // the db (which is sanitized) so no need to prepare them again.
-            $query   = '
+			OBJECT
+		);
+	}
+
+
+	/**
+	 * Gets the current transaction given the reg_url_link, or assumes the reg_url_link is in the
+	 * $_REQUEST global variable. Either way, tries to find the current transaction (through
+	 * the registration pointed to by reg_url_link), if not returns null
+	 *
+	 * @param string $reg_url_link
+	 *
+	 * @return EE_Transaction
+	 */
+	public function get_transaction_from_reg_url_link($reg_url_link = '')
+	{
+		return $this->get_one(array(
+			array(
+				'Registration.REG_url_link' => ! empty($reg_url_link) ? $reg_url_link : EE_Registry::instance()->REQ->get('e_reg_url_link',
+					'')
+			)
+		));
+	}
+
+
+	/**
+	 * Updates the provided EE_Transaction with all the applicable payments
+	 * (or fetch the EE_Transaction from its ID)
+	 *
+	 * @deprecated
+	 *
+	 * @param EE_Transaction|int $transaction_obj_or_id
+	 * @param boolean            $save_txn whether or not to save the transaction during this function call
+	 *
+	 * @return boolean
+	 * @throws \EE_Error
+	 */
+	public function update_based_on_payments($transaction_obj_or_id, $save_txn = true)
+	{
+		EE_Error::doing_it_wrong(
+			__CLASS__ . '::' . __FUNCTION__,
+			sprintf(__('This method is deprecated. Please use "%s" instead', 'event_espresso'),
+				'EE_Transaction_Processor::update_transaction_and_registrations_after_checkout_or_payment()'),
+			'4.6.0'
+		);
+		/** @type EE_Transaction_Processor $transaction_processor */
+		$transaction_processor = EE_Registry::instance()->load_class('Transaction_Processor');
+
+		return $transaction_processor->update_transaction_and_registrations_after_checkout_or_payment(
+			$this->ensure_is_obj($transaction_obj_or_id)
+		);
+	}
+
+	/**
+	 * Deletes "junk" transactions that were probably added by bots. There might be TONS
+	 * of these, so we are very careful to NOT select (which the models do even when deleting),
+	 * and so we only use wpdb directly and only do minimal joins.
+	 * Transactions are considered "junk" if they're failed for longer than a week.
+	 * Also, there is an extra check for payments related to the transaction, because if a transaction has a payment on
+	 * it, it's probably not junk (regardless of what status it has).
+	 * The downside to this approach is that is addons are listening for object deletions
+	 * on EEM_Base::delete() they won't be notified of this.  However, there is an action that plugins can hook into
+	 * to catch these types of deletions.
+	 *
+	 * @global WPDB $wpdb
+	 * @return mixed
+	 */
+	public function delete_junk_transactions()
+	{
+		/** @type WPDB $wpdb */
+		global $wpdb;
+		$deleted             = false;
+		$time_to_leave_alone = apply_filters(
+			'FHEE__EEM_Transaction__delete_junk_transactions__time_to_leave_alone'
+			, WEEK_IN_SECONDS
+		);
+
+
+		/**
+		 * This allows code to filter the query arguments used for retrieving the transaction IDs to delete.
+		 * Useful for plugins that want to exclude transactions matching certain query parameters.
+		 * The query parameters should be in the format accepted by the EEM_Base model queries.
+		 */
+		$ids_query = apply_filters(
+			'FHEE__EEM_Transaction__delete_junk_transactions__initial_query_args',
+			array(
+				0 => array(
+					'STS_ID'        => EEM_Transaction::failed_status_code,
+					'Payment.PAY_ID' => array( 'IS NULL' ),
+					'TXN_timestamp' => array('<', time() - $time_to_leave_alone)
+				)
+			),
+			$time_to_leave_alone
+		);
+
+
+		/**
+		 * This filter is for when code needs to filter the list of transaction ids that represent transactions
+		 * about to be deleted based on some other criteria that isn't easily done via the query args filter.
+		 */
+		$txn_ids = apply_filters(
+			'FHEE__EEM_Transaction__delete_junk_transactions__transaction_ids_to_delete',
+			EEM_Transaction::instance()->get_col($ids_query, 'TXN_ID'),
+			$time_to_leave_alone
+		);
+		//now that we have the ids to delete
+		if (! empty($txn_ids) && is_array($txn_ids)) {
+			// first, make sure these TXN's are removed the "ee_locked_transactions" array
+			EEM_Transaction::unset_locked_transactions($txn_ids);
+			// let's get deletin'...
+			// Why no wpdb->prepare?  Because the data is trusted.
+			// We got the ids from the original query to get them FROM
+			// the db (which is sanitized) so no need to prepare them again.
+			$query   = '
 				DELETE
 				FROM ' . $this->table() . '
 				WHERE
 					TXN_ID IN ( ' . implode(",", $txn_ids) . ')';
-            $deleted = $wpdb->query($query);
-        }
-        if ($deleted) {
-            /**
-             * Allows code to do something after the transactions have been deleted.
-             */
-            do_action('AHEE__EEM_Transaction__delete_junk_transactions__successful_deletion', $txn_ids);
-        }
-
-        return $deleted;
-    }
-
-
-    /**
-     * @param array $transaction_IDs
-     *
-     * @return bool
-     */
-    public static function unset_locked_transactions(array $transaction_IDs)
-    {
-        $locked_transactions = get_option('ee_locked_transactions', array());
-        $update              = false;
-        foreach ($transaction_IDs as $TXN_ID) {
-            if (isset($locked_transactions[$TXN_ID])) {
-                unset($locked_transactions[$TXN_ID]);
-                $update = true;
-            }
-        }
-        if ($update) {
-            update_option('ee_locked_transactions', $locked_transactions);
-        }
-
-        return $update;
-    }
-
-
-
-    /**
-     * returns an array of EE_Transaction objects whose timestamp is less than
-     * the current time minus the session lifespan, which defaults to 60 minutes
-     *
-     * @return EE_Base_Class[]|EE_Transaction[]
-     * @throws \EE_Error
-     */
-    public function get_transactions_in_progress()
-    {
-        return $this->get_all(
-            array(
-                array(
-                    'TXN_timestamp' => array(
-                        '>',
-                        time() - EE_Registry::instance()->SSN->lifespan()
-                    ),
-                    'STS_ID' => array(
-                        '!=',
-                        EEM_Transaction::complete_status_code
-                    ),
-                )
-            )
-        );
-    }
+			$deleted = $wpdb->query($query);
+		}
+		if ($deleted) {
+			/**
+			 * Allows code to do something after the transactions have been deleted.
+			 */
+			do_action('AHEE__EEM_Transaction__delete_junk_transactions__successful_deletion', $txn_ids);
+		}
+
+		return $deleted;
+	}
+
+
+	/**
+	 * @param array $transaction_IDs
+	 *
+	 * @return bool
+	 */
+	public static function unset_locked_transactions(array $transaction_IDs)
+	{
+		$locked_transactions = get_option('ee_locked_transactions', array());
+		$update              = false;
+		foreach ($transaction_IDs as $TXN_ID) {
+			if (isset($locked_transactions[$TXN_ID])) {
+				unset($locked_transactions[$TXN_ID]);
+				$update = true;
+			}
+		}
+		if ($update) {
+			update_option('ee_locked_transactions', $locked_transactions);
+		}
+
+		return $update;
+	}
+
+
+
+	/**
+	 * returns an array of EE_Transaction objects whose timestamp is less than
+	 * the current time minus the session lifespan, which defaults to 60 minutes
+	 *
+	 * @return EE_Base_Class[]|EE_Transaction[]
+	 * @throws \EE_Error
+	 */
+	public function get_transactions_in_progress()
+	{
+		return $this->get_all(
+			array(
+				array(
+					'TXN_timestamp' => array(
+						'>',
+						time() - EE_Registry::instance()->SSN->lifespan()
+					),
+					'STS_ID' => array(
+						'!=',
+						EEM_Transaction::complete_status_code
+					),
+				)
+			)
+		);
+	}
 
 
 }

Spacing +14 added lines, -14 removed lines

@@ -3,7 +3,7 @@ 
 if ( ! defined('EVENT_ESPRESSO_VERSION')) {
     exit('No direct script access allowed');
 }
-require_once(EE_MODELS . 'EEM_Base.model.php');
+require_once(EE_MODELS.'EEM_Base.model.php');
 
 /**
  *
@@ -107,7 +107,7 @@ 
                     __('Registration Steps', 'event_espresso'), false, array()),
             )
         );
-        $this->_model_relations        = array(
+        $this->_model_relations = array(
             'Registration'   => new EE_Has_Many_Relation(),
             'Payment'        => new EE_Has_Many_Relation(),
             'Status'         => new EE_Belongs_To_Relation(),
@@ -169,7 +169,7 @@ 
             ),
             OBJECT,
             array(
-                'txnDate' => array('DATE(' . $query_interval . ')', '%s'),
+                'txnDate' => array('DATE('.$query_interval.')', '%s'),
                 'revenue' => array('SUM(TransactionTable.TXN_paid)', '%d')
             )
         );
@@ -189,17 +189,17 @@ 
     public function get_revenue_per_event_report($period = '-1 month')
     {
         global $wpdb;
-        $transaction_table          = $wpdb->prefix . 'esp_transaction';
-        $registration_table         = $wpdb->prefix . 'esp_registration';
-        $registration_payment_table = $wpdb->prefix . 'esp_registration_payment';
+        $transaction_table          = $wpdb->prefix.'esp_transaction';
+        $registration_table         = $wpdb->prefix.'esp_registration';
+        $registration_payment_table = $wpdb->prefix.'esp_registration_payment';
         $event_table                = $wpdb->posts;
-        $payment_table              = $wpdb->prefix . 'esp_payment';
+        $payment_table              = $wpdb->prefix.'esp_payment';
         $sql_date                   = date('Y-m-d H:i:s', strtotime($period));
         $approved_payment_status    = EEM_Payment::status_id_approved;
         $extra_event_on_join        = '';
         //exclude events not authored by user if permissions in effect
         if ( ! EE_Registry::instance()->CAP->current_user_can('ee_read_others_registrations', 'reg_per_event_report')) {
-            $extra_event_on_join = ' AND Event.post_author = ' . get_current_user_id();
+            $extra_event_on_join = ' AND Event.post_author = '.get_current_user_id();
         }
 
         return $wpdb->get_results(
@@ -270,7 +270,7 @@ 
     public function update_based_on_payments($transaction_obj_or_id, $save_txn = true)
     {
         EE_Error::doing_it_wrong(
-            __CLASS__ . '::' . __FUNCTION__,
+            __CLASS__.'::'.__FUNCTION__,
             sprintf(__('This method is deprecated. Please use "%s" instead', 'event_espresso'),
                 'EE_Transaction_Processor::update_transaction_and_registrations_after_checkout_or_payment()'),
             '4.6.0'
@@ -318,7 +318,7 @@ 
             array(
                 0 => array(
                     'STS_ID'        => EEM_Transaction::failed_status_code,
-                    'Payment.PAY_ID' => array( 'IS NULL' ),
+                    'Payment.PAY_ID' => array('IS NULL'),
                     'TXN_timestamp' => array('<', time() - $time_to_leave_alone)
                 )
             ),
@@ -336,18 +336,18 @@ 
             $time_to_leave_alone
         );
         //now that we have the ids to delete
-        if (! empty($txn_ids) && is_array($txn_ids)) {
+        if ( ! empty($txn_ids) && is_array($txn_ids)) {
             // first, make sure these TXN's are removed the "ee_locked_transactions" array
             EEM_Transaction::unset_locked_transactions($txn_ids);
             // let's get deletin'...
             // Why no wpdb->prepare?  Because the data is trusted.
             // We got the ids from the original query to get them FROM
             // the db (which is sanitized) so no need to prepare them again.
-            $query   = '
+            $query = '
 				DELETE
-				FROM ' . $this->table() . '
+				FROM ' . $this->table().'
 				WHERE
-					TXN_ID IN ( ' . implode(",", $txn_ids) . ')';
+					TXN_ID IN ( ' . implode(",", $txn_ids).')';
             $deleted = $wpdb->query($query);
         }
         if ($deleted) {

core/db_models/EEM_Answer.model.php

Indentation +8 added lines, -8 removed lines

@@ -125,14 +125,14 @@
 	public function get_attendee_property_answer_value( EE_Registration $registration, $question_system_id = NULL, $pretty_answer = FALSE ){
 		$field_name = NULL;
 		$value = NULL;
-                //backward compat: we still want to find the question's ID
-                if( is_numeric( $question_system_id ) ) {
-                    //find this question's QST_system value
-                    $question_id = $question_system_id;
-                    $question_system_id = EEM_Question::instance()->get_var( array( array( 'QST_ID' => $question_system_id ) ), 'QST_system' );
-                } else {
-                    $question_id = (int) EEM_Question::instance()->get_var( array( array( 'QST_system' => $question_system_id ) ), 'QST_ID' );
-                }
+				//backward compat: we still want to find the question's ID
+				if( is_numeric( $question_system_id ) ) {
+					//find this question's QST_system value
+					$question_id = $question_system_id;
+					$question_system_id = EEM_Question::instance()->get_var( array( array( 'QST_ID' => $question_system_id ) ), 'QST_system' );
+				} else {
+					$question_id = (int) EEM_Question::instance()->get_var( array( array( 'QST_system' => $question_system_id ) ), 'QST_ID' );
+				}
 		//only bother checking if the registration has an attendee
 		if( $registration->attendee() instanceof EE_Attendee ) {
 			$field_name = EEM_Attendee::instance()->get_attendee_field_for_system_question( $question_system_id );

Spacing +35 added lines, -35 removed lines

@@ -51,18 +51,18 @@ 
 	/**
 	 * 	constructor
 	 */
-	protected function __construct( $timezone = NULL ){
-		$this->singular_item = __('Answer','event_espresso');
-		$this->plural_item = __('Answers','event_espresso');
+	protected function __construct($timezone = NULL) {
+		$this->singular_item = __('Answer', 'event_espresso');
+		$this->plural_item = __('Answers', 'event_espresso');
 		$this->_tables = array(
 			'Answer'=> new EE_Primary_Table('esp_answer', 'ANS_ID')
 		);
 		$this->_fields = array(
 			'Answer'=>array(
-				'ANS_ID'=> new EE_Primary_Key_Int_Field('ANS_ID', __('Answer ID','event_espresso')),
-				'REG_ID'=>new EE_Foreign_Key_Int_Field('REG_ID', __('Registration ID','event_espresso'), false, 0, 'Registration'),
-				'QST_ID'=>new EE_Foreign_Key_Int_Field('QST_ID', __('Question ID','event_espresso'), false, 0, 'Question'),
-				'ANS_value'=>new EE_Maybe_Serialized_Simple_HTML_Field('ANS_value', __('Answer Value','event_espresso'), false, '')
+				'ANS_ID'=> new EE_Primary_Key_Int_Field('ANS_ID', __('Answer ID', 'event_espresso')),
+				'REG_ID'=>new EE_Foreign_Key_Int_Field('REG_ID', __('Registration ID', 'event_espresso'), false, 0, 'Registration'),
+				'QST_ID'=>new EE_Foreign_Key_Int_Field('QST_ID', __('Question ID', 'event_espresso'), false, 0, 'Question'),
+				'ANS_value'=>new EE_Maybe_Serialized_Simple_HTML_Field('ANS_value', __('Answer Value', 'event_espresso'), false, '')
 			));
 		$this->_model_relations = array(
 			'Registration'=>new EE_Belongs_To_Relation(),
@@ -70,7 +70,7 @@ 
 		);
 		$this->_model_chain_to_wp_user = 'Registration.Event';
 		$this->_caps_slug = 'registrations';
-		parent::__construct( $timezone );
+		parent::__construct($timezone);
 	}
 
 
@@ -83,19 +83,19 @@ 
 	 * @param boolean $pretty_answer whether to call 'pretty_value' or just 'value'
 	 * @return string
 	 */
-	public function get_answer_value_to_question( EE_Registration $registration, $question_id = NULL,$pretty_answer = FALSE ){
-		$value = $this->get_attendee_property_answer_value( $registration, $question_id, $pretty_answer );
-		if (  $value === NULL ){
-			$answer_obj = $this->get_registration_question_answer_object( $registration, $question_id);
-			if( $answer_obj instanceof EE_Answer ){
-				if($pretty_answer){
+	public function get_answer_value_to_question(EE_Registration $registration, $question_id = NULL, $pretty_answer = FALSE) {
+		$value = $this->get_attendee_property_answer_value($registration, $question_id, $pretty_answer);
+		if ($value === NULL) {
+			$answer_obj = $this->get_registration_question_answer_object($registration, $question_id);
+			if ($answer_obj instanceof EE_Answer) {
+				if ($pretty_answer) {
 					$value = $answer_obj->pretty_value();
-				}else{
+				} else {
 					$value = $answer_obj->value();
 				}
 			}
 		}
-		return apply_filters( 'FHEE__EEM_Answer__get_answer_value_to_question__answer_value', $value, $registration, $question_id );
+		return apply_filters('FHEE__EEM_Answer__get_answer_value_to_question__answer_value', $value, $registration, $question_id);
 	}
 
 
@@ -106,9 +106,9 @@ 
 	 * @param int $question_id
 	 * @return EE_Answer
 	 */
-	public function get_registration_question_answer_object( EE_Registration $registration, $question_id = NULL){
-		$answer_obj = $this->get_one( array( array( 'QST_ID'=>$question_id, 'REG_ID'=>$registration->ID() )));
-		return apply_filters( 'FHEE__EEM_Answer__get_registration_question_answer_object__answer_obj', $answer_obj, $registration, $question_id );
+	public function get_registration_question_answer_object(EE_Registration $registration, $question_id = NULL) {
+		$answer_obj = $this->get_one(array(array('QST_ID'=>$question_id, 'REG_ID'=>$registration->ID())));
+		return apply_filters('FHEE__EEM_Answer__get_registration_question_answer_object__answer_obj', $answer_obj, $registration, $question_id);
 	}
 
 
@@ -122,39 +122,39 @@ 
 	 * @return string|null (if the registration has no attendee, or the question_system_id is not a QST_ID or QST_system for
 	 * a question corresponding to an attendee field, returns null)
 	 */
-	public function get_attendee_property_answer_value( EE_Registration $registration, $question_system_id = NULL, $pretty_answer = FALSE ){
+	public function get_attendee_property_answer_value(EE_Registration $registration, $question_system_id = NULL, $pretty_answer = FALSE) {
 		$field_name = NULL;
 		$value = NULL;
                 //backward compat: we still want to find the question's ID
-                if( is_numeric( $question_system_id ) ) {
+                if (is_numeric($question_system_id)) {
                     //find this question's QST_system value
                     $question_id = $question_system_id;
-                    $question_system_id = EEM_Question::instance()->get_var( array( array( 'QST_ID' => $question_system_id ) ), 'QST_system' );
+                    $question_system_id = EEM_Question::instance()->get_var(array(array('QST_ID' => $question_system_id)), 'QST_system');
                 } else {
-                    $question_id = (int) EEM_Question::instance()->get_var( array( array( 'QST_system' => $question_system_id ) ), 'QST_ID' );
+                    $question_id = (int) EEM_Question::instance()->get_var(array(array('QST_system' => $question_system_id)), 'QST_ID');
                 }
 		//only bother checking if the registration has an attendee
-		if( $registration->attendee() instanceof EE_Attendee ) {
-			$field_name = EEM_Attendee::instance()->get_attendee_field_for_system_question( $question_system_id );
-			if( $field_name ) {
-				if( $pretty_answer ) {
-					if( $field_name === 'STA_ID' ) {
+		if ($registration->attendee() instanceof EE_Attendee) {
+			$field_name = EEM_Attendee::instance()->get_attendee_field_for_system_question($question_system_id);
+			if ($field_name) {
+				if ($pretty_answer) {
+					if ($field_name === 'STA_ID') {
 						$state = $registration->attendee()->state_obj();
-						$value = $state instanceof EE_State ? $state->name() : sprintf( __('Unknown State (%s)', 'event_espresso'), $registration->attendee()->state_ID() );
-					} else if($field_name === 'CNT_ISO') {
+						$value = $state instanceof EE_State ? $state->name() : sprintf(__('Unknown State (%s)', 'event_espresso'), $registration->attendee()->state_ID());
+					} else if ($field_name === 'CNT_ISO') {
 						$country = $registration->attendee()->country_obj();
-						$value = $country instanceof EE_Country ? $country->name() : sprintf(__('Unknown Country (%s)', "event_espresso"),$registration->attendee()->country_ID());
+						$value = $country instanceof EE_Country ? $country->name() : sprintf(__('Unknown Country (%s)', "event_espresso"), $registration->attendee()->country_ID());
 					} else {
-						$value = $registration->attendee()->get_pretty( $field_name );
+						$value = $registration->attendee()->get_pretty($field_name);
 					}
 					//if field name is blank, leave the value as null too
-				}else{
-					$value = $registration->attendee()->get( $field_name );
+				} else {
+					$value = $registration->attendee()->get($field_name);
 				}
 			}
 			//if no field was found, leave value blank
 		}
-		return apply_filters( 'FHEE__EEM_Answer__get_attendee_question_answer_value__answer_value', $value, $registration, $question_id, $question_system_id );
+		return apply_filters('FHEE__EEM_Answer__get_attendee_question_answer_value__answer_value', $value, $registration, $question_id, $question_system_id);
 	}
 
 

core/services/collections/CollectionInterface.php

Indentation +14 added lines, -14 removed lines

@@ -113,12 +113,12 @@ 
 	public function previous();
 
 		/**
-	 * Returns the index of a given object, or false if not found
-	 *
-	 * @see http://stackoverflow.com/a/8736013
-	 * @param $object
-	 * @return boolean|int|string
-	 */
+		 * Returns the index of a given object, or false if not found
+		 *
+		 * @see http://stackoverflow.com/a/8736013
+		 * @param $object
+		 * @return boolean|int|string
+		 */
 	public function indexOf( $object );
 
 
@@ -160,17 +160,17 @@ 
 
 
 
-    /**
-     * detaches ALL objects from the Collection
-     */
-    public function detachAll();
+	/**
+	 * detaches ALL objects from the Collection
+	 */
+	public function detachAll();
 
 
 
-    /**
-     * unsets and detaches ALL objects from the Collection
-     */
-    public function trashAndDetachAll();
+	/**
+	 * unsets and detaches ALL objects from the Collection
+	 */
+	public function trashAndDetachAll();
 
 }
 // End of file CollectionInterface.php