/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-

 * vim: sw=4 ts=8 et :

 */

/* 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/. */

#ifndef dom_plugins_PluginBackgroundDestroyer

#define dom_plugins_PluginBackgroundDestroyer

#include "mozilla/plugins/PPluginBackgroundDestroyerChild.h"

#include "mozilla/plugins/PPluginBackgroundDestroyerParent.h"

#include "gfxSharedImageSurface.h"

class gfxASurface;

namespace mozilla {

namespace plugins {

/**

 * When instances of this class are destroyed, the old background goes

 * along with them, completing the destruction process (whether or not

 * the plugin stayed alive long enough to ack).

 */

class PluginBackgroundDestroyerParent : public PPluginBackgroundDestroyerParent {

public:

    explicit PluginBackgroundDestroyerParent(gfxASurface* aDyingBackground);

    virtual ~PluginBackgroundDestroyerParent();

private:

    virtual void ActorDestroy(ActorDestroyReason why) override;

    RefPtr<gfxASurface> mDyingBackground;

};

/**

 * This class exists solely to instruct its instance to release its

 * current background, a new one may be coming.

 */

class PluginBackgroundDestroyerChild : public PPluginBackgroundDestroyerChild {

public:

    PluginBackgroundDestroyerChild() { }

    virtual ~PluginBackgroundDestroyerChild() { }

private:

    // Implementing this for good hygiene.

    virtual void ActorDestroy(ActorDestroyReason why) override

    { }

};

} // namespace plugins

} // namespace mozilla

#endif  // dom_plugins_PluginBackgroundDestroyer