/* -*- Mode: IDL; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
 *
 * For more information on this interface, please see
 * https://w3c.github.io/ServiceWorker/#extendablemessage-event-section
 */

[Exposed=(ServiceWorker)]
interface ExtendableMessageEvent : ExtendableEvent {
  constructor(DOMString type,
              optional ExtendableMessageEventInit eventInitDict = {});

  /**
   * Custom data associated with this event.
   */
  [GetterThrows]
  readonly attribute any data;

  /**
   * The origin of the site from which this event originated.
   */
  readonly attribute DOMString origin;

  /**
   * The last event ID string of the event source.
   */
  readonly attribute DOMString lastEventId;

  /**
   * The client, service worker or port which originated this event.
   */
  readonly attribute (Client or ServiceWorker or MessagePort)? source;

  [Constant, Cached, Frozen]
  readonly attribute sequence<MessagePort> ports;
};

dictionary ExtendableMessageEventInit : ExtendableEventInit {
  any data = null;
  DOMString origin = "";
  DOMString lastEventId = "";
  (Client or ServiceWorker or MessagePort)? source = null;
  sequence<MessagePort> ports = [];
};