chrome/nsIToolkitChromeRegistry.idl
author Andrew Osmond <aosmond@mozilla.com>
Tue, 24 Apr 2018 13:51:35 -0400
changeset 415325 1173dccd114e1c86047a6f01e341cf1c4ea8fe9c
parent 195532 76be62e9944c0ff34e9a30258fa48b2c73b8cc32
child 471306 7a5177cca40350267da21fdd3dd0025a172db51f
permissions -rw-r--r--
Bug 1444537 - Part 3. Fix how redecode errors could cause animated image state inconsistencies. r=tnikkel We can discard frames from an animated image if the memory footprint exceeds the threshold. This will cause us to redecode frames on demand instead. However decoders can fail to produce the same results on subsequent runs due to differences in memory pressure, etc. If this happens our state can get inconsistent. In particular, if we keep failing on the first frame, we end up in an infinite loop on the decoder thread. Since we don't have the owning image to signal, as we had to release our reference to it after the first pass, we can do little but stop decoding. From the user's perspective, the animation will come to a stop.

/* -*- Mode: C++; tab-width; 8; 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 "nsIChromeRegistry.idl"

interface nsIURI;
interface nsIUTF8StringEnumerator;

[scriptable, uuid(8727651c-9530-45a0-b81e-0e0690c30c50)]
interface nsIToolkitChromeRegistry : nsIXULChromeRegistry
{
  /**
   * If the OS has a "high-visibility" or "disabled-friendly" theme set,
   * we want to force mozilla into the classic theme, which (for the most part
   * obeys the system color/font settings. We cannot do this at initialization,
   * because it depends on the toolkit (GTK2) being initialized, which is
   * not the case in some embedding situations. Embedders have to manually
   * call this method during the startup process.
   */
  void checkForOSAccessibility();

  /**
   * Get a list of locales available for the specified package.
   */
  nsIUTF8StringEnumerator getLocalesForPackage(in AUTF8String aPackage);
};