woocommerce/includes/emails/class-wc-email-cancelled-order.php

<?php

if ( ! defined( 'ABSPATH' ) ) {
    exit; // Exit if accessed directly
}

if ( ! class_exists( 'WC_Email_Cancelled_Order' ) ) :

/**
 * Cancelled Order Email
 *
 * An email sent to the admin when an order is cancelled.
 *
 * @class       WC_Email_Cancelled_Order
 * @version     2.2.7
 * @package     WooCommerce/Classes/Emails
 * @author      WooThemes
 * @extends     WC_Email
 */
class WC_Email_Cancelled_Order extends WC_Email {

    /**
     * Constructor
     */
    function __construct() {

        $this->id               = 'cancelled_order';
        $this->title            = __( 'Cancelled order', 'woocommerce' );
        $this->description      = __( 'Cancelled order emails are sent when orders have been marked cancelled (if they were previously pending or on-hold).', 'woocommerce' );

        $this->heading          = __( 'Cancelled order', 'woocommerce' );
        $this->subject          = __( '[{site_title}] Cancelled order ({order_number})', 'woocommerce' );

        $this->template_html    = 'emails/admin-cancelled-order.php';
        $this->template_plain   = 'emails/plain/admin-cancelled-order.php';

        // Triggers for this email
        add_action( 'woocommerce_order_status_pending_to_cancelled_notification', array( $this, 'trigger' ) );
        add_action( 'woocommerce_order_status_on-hold_to_cancelled_notification', array( $this, 'trigger' ) );

        // Call parent constructor
        parent::__construct();

        // Other settings
        $this->recipient = $this->get_option( 'recipient' );

        if ( ! $this->recipient )
            $this->recipient = get_option( 'admin_email' );
    }

    /**
     * trigger function.
     *
     * @access public
     * @return void
     */
    function trigger( $order_id ) {

        if ( $order_id ) {
            $this->object       = wc_get_order( $order_id );

            $this->find['order-number']    = '{order_number}';

            $this->replace['order-number'] = $this->object->get_order_number();
        }

        if ( ! $this->is_enabled() || ! $this->get_recipient() ) {
            return;
        }

        $this->send( $this->get_recipient(), $this->get_subject(), $this->get_content(), $this->get_headers(), $this->get_attachments() );
    }

    /**
     * get_content_html function.
     *
     * @access public
     * @return string
     */
    function get_content_html() {
        ob_start();
        wc_get_template( $this->template_html, array(
            'order'         => $this->object,
            'email_heading' => $this->get_heading(),
            'sent_to_admin' => true,
            'plain_text'    => false
        ) );
        return ob_get_clean();
    }

    /**
     * get_content_plain function.
     *
     * @access public
     * @return string
     */
    function get_content_plain() {
        ob_start();
        wc_get_template( $this->template_plain, array(
            'order'         => $this->object,
            'email_heading' => $this->get_heading(),
            'sent_to_admin' => true,
            'plain_text'    => true
        ) );
        return ob_get_clean();
    }

    /**
     * Initialise Settings Form Fields
     *
     * @access public
     * @return void
     */
    function init_form_fields() {
        $this->form_fields = array(
            'enabled' => array(
                'title'         => __( 'Enable/Disable', 'woocommerce' ),
                'type'          => 'checkbox',
                'label'         => __( 'Enable this email notification', 'woocommerce' ),
                'default'       => 'yes'
            ),
            'recipient' => array(
                'title'         => __( 'Recipient(s)', 'woocommerce' ),
                'type'          => 'text',
                'description'   => sprintf( __( 'Enter recipients (comma separated) for this email. Defaults to <code>%s</code>.', 'woocommerce' ), esc_attr( get_option('admin_email') ) ),
                'placeholder'   => '',
                'default'       => ''
            ),
            'subject' => array(
                'title'         => __( 'Subject', 'woocommerce' ),
                'type'          => 'text',
                'description'   => sprintf( __( 'This controls the email subject line. Leave blank to use the default subject: <code>%s</code>.', 'woocommerce' ), $this->subject ),
                'placeholder'   => '',
                'default'       => ''
            ),
            'heading' => array(
                'title'         => __( 'Email Heading', 'woocommerce' ),
                'type'          => 'text',
                'description'   => sprintf( __( 'This controls the main heading contained within the email notification. Leave blank to use the default heading: <code>%s</code>.', 'woocommerce' ), $this->heading ),
                'placeholder'   => '',
                'default'       => ''
            ),
            'email_type' => array(
                'title'         => __( 'Email type', 'woocommerce' ),
                'type'          => 'select',
                'description'   => __( 'Choose which format of email to send.', 'woocommerce' ),
                'default'       => 'html',
                'class'         => 'email_type wc-enhanced-select',
                'options'       => array(
                    'plain'         => __( 'Plain text', 'woocommerce' ),
                    'html'          => __( 'HTML', 'woocommerce' ),
                    'multipart'     => __( 'Multipart', 'woocommerce' ),
                )
            )
        );
    }
}

endif;

return new WC_Email_Cancelled_Order();