parser/html/nsHtml5AutoPauseUpdate.h

   1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* vim: set ts=2 sw=2 et tw=78: */
   3 /* This Source Code Form is subject to the terms of the Mozilla Public
   4  * License, v. 2.0. If a copy of the MPL was not distributed with this
   5  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   6
   7 #ifndef nsHtml5AutoPauseUpdate_h
   8 #define nsHtml5AutoPauseUpdate_h
   9
  10 class MOZ_RAII nsHtml5AutoPauseUpdate final {
  11  private:
  12   RefPtr<nsHtml5DocumentBuilder> mBuilder;
  13
  14  public:
  15   explicit nsHtml5AutoPauseUpdate(nsHtml5DocumentBuilder* aBuilder)
  16       : mBuilder(aBuilder) {
  17     mBuilder->EndDocUpdate();
  18   }
  19   ~nsHtml5AutoPauseUpdate() {
  20     // Something may have terminated the parser during the update pause.
  21     if (!mBuilder->IsComplete()) {
  22       mBuilder->BeginDocUpdate();
  23     }
  24   }
  25 };
  26
  27 #endif  // nsHtml5AutoPauseUpdate_h