// 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(PropertyHandle);

  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
