michael@0: /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
michael@0:  * vim: sw=4 ts=8 et :
michael@0:  */
michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: #ifndef dom_plugins_PluginBackgroundDestroyer
michael@0: #define dom_plugins_PluginBackgroundDestroyer
michael@0: 
michael@0: #include "mozilla/plugins/PPluginBackgroundDestroyerChild.h"
michael@0: #include "mozilla/plugins/PPluginBackgroundDestroyerParent.h"
michael@0: 
michael@0: #include "gfxSharedImageSurface.h"
michael@0: 
michael@0: class gfxASurface;
michael@0: 
michael@0: namespace mozilla {
michael@0: namespace plugins {
michael@0: 
michael@0: /**
michael@0:  * When instances of this class are destroyed, the old background goes
michael@0:  * along with them, completing the destruction process (whether or not
michael@0:  * the plugin stayed alive long enough to ack).
michael@0:  */
michael@0: class PluginBackgroundDestroyerParent : public PPluginBackgroundDestroyerParent {
michael@0: public:
michael@0:     PluginBackgroundDestroyerParent(gfxASurface* aDyingBackground);
michael@0: 
michael@0:     virtual ~PluginBackgroundDestroyerParent();
michael@0: 
michael@0: private:
michael@0:     virtual void ActorDestroy(ActorDestroyReason why) MOZ_OVERRIDE;
michael@0: 
michael@0:     nsRefPtr<gfxASurface> mDyingBackground;
michael@0: };
michael@0: 
michael@0: /**
michael@0:  * This class exists solely to instruct its instance to release its
michael@0:  * current background, a new one may be coming.
michael@0:  */
michael@0: class PluginBackgroundDestroyerChild : public PPluginBackgroundDestroyerChild {
michael@0: public:
michael@0:     PluginBackgroundDestroyerChild() { }
michael@0:     virtual ~PluginBackgroundDestroyerChild() { }
michael@0: 
michael@0: private:
michael@0:     // Implementing this for good hygiene.
michael@0:     virtual void ActorDestroy(ActorDestroyReason why) MOZ_OVERRIDE
michael@0:     { }
michael@0: };
michael@0: 
michael@0: } // namespace plugins
michael@0: } // namespace mozilla
michael@0: 
michael@0: #endif  // dom_plugins_PluginBackgroundDestroyer