/*
 * Copyright (C) 2013 Google Inc. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * 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.
 *     * Neither the name of Google Inc. nor the names of its
 * 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
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#ifndef Animation_h
#define Animation_h

#include "core/animation/AnimationEffect.h"
#include "core/animation/AnimationNode.h"
#include "core/animation/EffectInput.h"
#include "core/animation/TimingInput.h"
#include "platform/heap/Handle.h"
#include "wtf/RefPtr.h"

namespace blink {

class Dictionary;
class Element;
class ExceptionState;
class SampledEffect;

class Animation FINAL : public AnimationNode {
    DEFINE_WRAPPERTYPEINFO();
public:
    enum Priority { DefaultPriority, TransitionPriority };

    static PassRefPtrWillBeRawPtr<Animation> create(Element*, PassRefPtrWillBeRawPtr<AnimationEffect>, const Timing&, Priority = DefaultPriority, PassOwnPtrWillBeRawPtr<EventDelegate> = nullptr);
    // Web Animations API Bindings constructors.
    static PassRefPtrWillBeRawPtr<Animation> create(Element*, PassRefPtrWillBeRawPtr<AnimationEffect>, const Dictionary& timingInputDictionary);
    static PassRefPtrWillBeRawPtr<Animation> create(Element*, PassRefPtrWillBeRawPtr<AnimationEffect>, double duration);
    static PassRefPtrWillBeRawPtr<Animation> create(Element*, PassRefPtrWillBeRawPtr<AnimationEffect>);
    static PassRefPtrWillBeRawPtr<Animation> create(Element*, const Vector<Dictionary>& keyframeDictionaryVector, const Dictionary& timingInputDictionary, ExceptionState&);
    static PassRefPtrWillBeRawPtr<Animation> create(Element*, const Vector<Dictionary>& keyframeDictionaryVector, double duration, ExceptionState&);
    static PassRefPtrWillBeRawPtr<Animation> create(Element*, const Vector<Dictionary>& keyframeDictionaryVector, ExceptionState&);

    virtual ~Animation();

    virtual bool isAnimation() const OVERRIDE { return true; }

    bool affects(CSSPropertyID) const;
    const AnimationEffect* effect() const { return m_effect.get(); }
    AnimationEffect* effect() { return m_effect.get(); }
    Priority priority() const { return m_priority; }
    Element* target() { return m_target; }

    void notifySampledEffectRemovedFromAnimationStack();
#if !ENABLE(OILPAN)
    void notifyElementDestroyed();
#endif

    bool isCandidateForAnimationOnCompositor() const;
    // Must only be called once.
    bool maybeStartAnimationOnCompositor(double startTime, double timeOffset);
    bool hasActiveAnimationsOnCompositor() const;
    bool hasActiveAnimationsOnCompositor(CSSPropertyID) const;
    void cancelAnimationOnCompositor();
    void pauseAnimationForTestingOnCompositor(double pauseTime);

    virtual void trace(Visitor*);

protected:
    void applyEffects();
    void clearEffects();
    virtual void updateChildrenAndEffects() const OVERRIDE;
    virtual void attach(AnimationPlayer*) OVERRIDE;
    virtual void detach() OVERRIDE;
    virtual void specifiedTimingChanged() OVERRIDE;
    virtual double calculateTimeToEffectChange(bool forwards, double inheritedTime, double timeToNextIteration) const OVERRIDE;

private:
    Animation(Element*, PassRefPtrWillBeRawPtr<AnimationEffect>, const Timing&, Priority, PassOwnPtrWillBeRawPtr<EventDelegate>);

    RawPtrWillBeMember<Element> m_target;
    RefPtrWillBeMember<AnimationEffect> m_effect;
    RawPtrWillBeMember<SampledEffect> m_sampledEffect;

    Priority m_priority;

    Vector<int> m_compositorAnimationIds;

    friend class AnimationAnimationV8Test;
};

DEFINE_TYPE_CASTS(Animation, AnimationNode, animationNode, animationNode->isAnimation(), animationNode.isAnimation());

} // namespace blink

#endif // Animation_h