gecko-dev/image/public/imgIContainerDebug.idl

/** -*- Mode: C++; 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/. */

#include "nsISupports.idl"

/**
 * This interface is used in debug builds (and only there) in
 * order to let automatic tests running JavaScript access
 * internal state of imgContainers. This lets us test
 * things like animation.
 */
[scriptable, uuid(52cbb839-6e63-4a70-b21a-1db4ca706c49)]
interface imgIContainerDebug : nsISupports
{
  /**
   * The # of frames this imgContainer has been notified about.
   * That is equal to the # of times the animation timer has
   * fired, and is usually equal to the # of frames actually
   * drawn (but actual drawing might be disabled).
   */
  readonly attribute uint32_t framesNotified;
};