/*
 * Copyright (C) 2013 Google Inc. All rights reserved.
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 * modification, are permitted provided that the following conditions are
 * met:
 *
 *     * Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above
 * copyright notice, this list of conditions and the following disclaimer
 * in the documentation and/or other materials provided with the
 * distribution.
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 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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#ifndef CompositorPendingAnimations_h
#define CompositorPendingAnimations_h

#include "platform/heap/Handle.h"
#include "wtf/Vector.h"

namespace blink {

class AnimationPlayer;

// Manages the starting of pending animations on the compositor following a
// compositing update.
// For CSS Animations, used to synchronize the start of main-thread animations
// with compositor animations when both classes of CSS Animations are triggered
// by the same recalc
class CompositorPendingAnimations FINAL {
    DISALLOW_ALLOCATION();
public:
    void add(AnimationPlayer*);
    // Returns whether we are waiting for an animation to start and should
    // service again on the next frame.
    bool startPendingAnimations();
    void notifyCompositorAnimationStarted(double monotonicAnimationStartTime);

    void trace(Visitor*);

private:
    WillBeHeapVector<RefPtrWillBeMember<AnimationPlayer> > m_pending;
    WillBeHeapVector<RefPtrWillBeMember<AnimationPlayer> > m_waitingForCompositorAnimationStart;
};

} // namespace blink

#endif
