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#ifndef SKY_ENGINE_CORE_ANIMATION_ANIMATABLE_ANIMATABLEREPEATABLE_H_
#define SKY_ENGINE_CORE_ANIMATION_ANIMATABLE_ANIMATABLEREPEATABLE_H_

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

namespace blink {

// This class represents collections of values that animate in a repeated fashion as described by the CSS Transitions spec:
// http://www.w3.org/TR/css3-transitions/#animtype-repeatable-list
class AnimatableRepeatable : public AnimatableValue {
public:
    virtual ~AnimatableRepeatable() { }

    // This will consume the vector passed into it.
    static PassRefPtr<AnimatableRepeatable> create(Vector<RefPtr<AnimatableValue> >& values)
    {
        return adoptRef(new AnimatableRepeatable(values));
    }

    const Vector<RefPtr<AnimatableValue> >& values() const { return m_values; }

protected:
    AnimatableRepeatable()
    {
    }
    AnimatableRepeatable(Vector<RefPtr<AnimatableValue> >& values)
    {
        ASSERT(!values.isEmpty());
        m_values.swap(values);
    }

    static bool interpolateLists(const Vector<RefPtr<AnimatableValue> >& fromValues, const Vector<RefPtr<AnimatableValue> >& toValues, double fraction, Vector<RefPtr<AnimatableValue> >& interpolatedValues);

    virtual bool usesDefaultInterpolationWith(const AnimatableValue*) const override;

    Vector<RefPtr<AnimatableValue> > m_values;

private:
    virtual PassRefPtr<AnimatableValue> interpolateTo(const AnimatableValue*, double fraction) const override;

    virtual AnimatableType type() const override { return TypeRepeatable; }
    virtual bool equalTo(const AnimatableValue*) const override final;
};

DEFINE_TYPE_CASTS(AnimatableRepeatable, AnimatableValue, value, (value->isRepeatable() || value->isStrokeDasharrayList()), (value.isRepeatable() || value.isStrokeDasharrayList()));

} // namespace blink

#endif  // SKY_ENGINE_CORE_ANIMATION_ANIMATABLE_ANIMATABLEREPEATABLE_H_
