sky/engine/core/animation/animatable/AnimatableNeutral.h

/*
 * Copyright (C) 2013 Google Inc. All rights reserved.
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 * modification, are permitted provided that the following conditions are
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 * copyright notice, this list of conditions and the following disclaimer
 * in the documentation and/or other materials provided with the
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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
 * "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_ANIMATABLE_ANIMATABLENEUTRAL_H_
#define SKY_ENGINE_CORE_ANIMATION_ANIMATABLE_ANIMATABLENEUTRAL_H_

#include "sky/engine/core/animation/animatable/AnimatableValue.h"

namespace blink {

class AnimatableNeutral final : public AnimatableValue {
public:
    virtual ~AnimatableNeutral() { }

protected:
    static PassRefPtr<AnimatableNeutral> create() { return adoptRef(new AnimatableNeutral()); }
    virtual PassRefPtr<AnimatableValue> interpolateTo(const AnimatableValue* value, double fraction) const override
    {
        ASSERT_NOT_REACHED();
        return nullptr;
    }

private:
    friend class AnimatableValue;
    virtual AnimatableType type() const override { return TypeNeutral; }
    virtual bool equalTo(const AnimatableValue* value) const override
    {
        ASSERT_NOT_REACHED();
        return true;
    }
};

} // namespace blink

#endif  // SKY_ENGINE_CORE_ANIMATION_ANIMATABLE_ANIMATABLENEUTRAL_H_