/*
 * Copyright (C) 2013 Google Inc. All rights reserved.
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 * modification, are permitted provided that the following conditions are
 * met:
 *
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 * notice, this list of conditions and the following disclaimer.
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 * 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.
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 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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#ifndef SKY_ENGINE_CORE_ANIMATION_ANIMATIONSTACK_H_
#define SKY_ENGINE_CORE_ANIMATION_ANIMATIONSTACK_H_

#include "sky/engine/core/animation/Animation.h"
#include "sky/engine/core/animation/AnimationEffect.h"
#include "sky/engine/core/animation/AnimationPlayer.h"
#include "sky/engine/core/animation/SampledEffect.h"
#include "sky/engine/platform/geometry/FloatBox.h"
#include "sky/engine/wtf/HashSet.h"
#include "sky/engine/wtf/Vector.h"

namespace blink {

class InertAnimation;

class AnimationStack {
    DISALLOW_ALLOCATION();
    WTF_MAKE_NONCOPYABLE(AnimationStack);
public:
    AnimationStack();

    void add(PassOwnPtr<SampledEffect> effect) { m_effects.append(effect); }
    bool isEmpty() const { return m_effects.isEmpty(); }
    bool affects(CSSPropertyID) const;
    static HashMap<CSSPropertyID, RefPtr<Interpolation> > activeInterpolations(AnimationStack*, const Vector<RawPtr<InertAnimation> >* newAnimations, const HashSet<RawPtr<const AnimationPlayer> >* cancelledAnimationPlayers, Animation::Priority, double timelineCurrentTime);

private:
    void simplifyEffects();
    // Effects sorted by priority. Lower priority at the start of the list.
    Vector<OwnPtr<SampledEffect> > m_effects;

    friend class AnimationAnimationStackTest;
};

} // namespace blink

#endif  // SKY_ENGINE_CORE_ANIMATION_ANIMATIONSTACK_H_