Source/core/animation/AnimatableVisibility.h

/*
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#ifndef AnimatableVisibility_h
#define AnimatableVisibility_h

#include "core/animation/AnimatableValue.h"
#include "core/rendering/style/RenderStyleConstants.h"

namespace WebCore {

class AnimatableVisibility : public AnimatableValue {
public:
    virtual ~AnimatableVisibility() { }
    static PassRefPtr<AnimatableVisibility> create(EVisibility visibility)
    {
        return adoptRef(new AnimatableVisibility(visibility));
    }

    EVisibility visibility() const { return m_visibility; }

protected:
    virtual PassRefPtr<AnimatableValue> interpolateTo(const AnimatableValue*, double fraction) const OVERRIDE;

private:
    explicit AnimatableVisibility(EVisibility visibility)
        : m_visibility(visibility)
    {
    }
    virtual AnimatableType type() const OVERRIDE { return TypeVisibility; }
    virtual bool equalTo(const AnimatableValue*) const OVERRIDE;
    const EVisibility m_visibility;
};

DEFINE_ANIMATABLE_VALUE_TYPE_CASTS(AnimatableVisibility, isVisibility());

} // namespace WebCore

#endif // AnimatableVisibility_h