Line data    Source code

       1             : /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
       2             :  * vim: sw=4 ts=8 et :
       3             :  */
       4             : /* This Source Code Form is subject to the terms of the Mozilla Public
       5             :  * License, v. 2.0. If a copy of the MPL was not distributed with this
       6             :  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
       7             : 
       8             : #ifndef dom_plugins_PluginBackgroundDestroyer
       9             : #define dom_plugins_PluginBackgroundDestroyer
      10             : 
      11             : #include "mozilla/plugins/PPluginBackgroundDestroyerChild.h"
      12             : #include "mozilla/plugins/PPluginBackgroundDestroyerParent.h"
      13             : 
      14             : #include "gfxSharedImageSurface.h"
      15             : 
      16             : class gfxASurface;
      17             : 
      18             : namespace mozilla {
      19             : namespace plugins {
      20             : 
      21             : /**
      22             :  * When instances of this class are destroyed, the old background goes
      23             :  * along with them, completing the destruction process (whether or not
      24             :  * the plugin stayed alive long enough to ack).
      25             :  */
      26             : class PluginBackgroundDestroyerParent : public PPluginBackgroundDestroyerParent {
      27             : public:
      28             :     explicit PluginBackgroundDestroyerParent(gfxASurface* aDyingBackground);
      29             : 
      30             :     virtual ~PluginBackgroundDestroyerParent();
      31             : 
      32             : private:
      33             :     virtual void ActorDestroy(ActorDestroyReason why) override;
      34             : 
      35             :     RefPtr<gfxASurface> mDyingBackground;
      36             : };
      37             : 
      38             : /**
      39             :  * This class exists solely to instruct its instance to release its
      40             :  * current background, a new one may be coming.
      41             :  */
      42             : class PluginBackgroundDestroyerChild : public PPluginBackgroundDestroyerChild {
      43             : public:
      44           0 :     PluginBackgroundDestroyerChild() { }
      45           0 :     virtual ~PluginBackgroundDestroyerChild() { }
      46             : 
      47             : private:
      48             :     // Implementing this for good hygiene.
      49           0 :     virtual void ActorDestroy(ActorDestroyReason why) override
      50           0 :     { }
      51             : };
      52             : 
      53             : } // namespace plugins
      54             : } // namespace mozilla
      55             : 
      56             : #endif  // dom_plugins_PluginBackgroundDestroyer