gecko-dev/dom/webidl/DOMRequest.webidl

/* -*- 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/. */

enum DOMRequestReadyState { "pending", "done" };

[NoInterfaceObject]
interface DOMRequestShared {
  readonly attribute DOMRequestReadyState readyState;

  readonly attribute any result;
  readonly attribute DOMError? error;

  attribute EventHandler onsuccess;
  attribute EventHandler onerror;
};

interface DOMRequest : EventTarget {
  // The [TreatNonCallableAsNull] annotation is required since then() should do
  // nothing instead of throwing errors when non-callable arguments are passed.
  [NewObject]
  Promise<any> then([TreatNonCallableAsNull] optional AnyCallback? fulfillCallback = null,
                    [TreatNonCallableAsNull] optional AnyCallback? rejectCallback = null);
};

DOMRequest implements DOMRequestShared;