third_party/WebKit/Source/core/animation/CSSLengthListInterpolationType.h

// Copyright 2015 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef CSSLengthListInterpolationType_h
#define CSSLengthListInterpolationType_h

#include "core/animation/CSSInterpolationType.h"
#include "core/animation/CSSLengthInterpolationType.h"
#include "platform/Length.h"

namespace blink {

class CSSLengthListInterpolationType : public CSSInterpolationType {
public:
    CSSLengthListInterpolationType(CSSPropertyID);

    InterpolationValue maybeConvertUnderlyingValue(const InterpolationEnvironment&) const final;
    void composite(UnderlyingValueOwner&, double underlyingFraction, const InterpolationValue&, double interpolationFraction) const final;
    void apply(const InterpolableValue&, const NonInterpolableValue*, InterpolationEnvironment&) const final;

private:
    InterpolationValue maybeConvertNeutral(const InterpolationValue& underlying, ConversionCheckers&) const final;
    InterpolationValue maybeConvertInitial(const StyleResolverState&, ConversionCheckers&) const final;
    InterpolationValue maybeConvertInherit(const StyleResolverState&, ConversionCheckers&) const final;
    virtual InterpolationValue maybeConvertValue(const CSSValue&, const StyleResolverState&, ConversionCheckers&) const;

    PairwiseInterpolationValue maybeMergeSingles(InterpolationValue&& start, InterpolationValue&& end) const final;

    const ValueRange m_valueRange;
};

} // namespace blink

#endif // CSSLengthListInterpolationType_h