/*
 * 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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 *
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 * notice, this list of conditions and the following disclaimer.
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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.
 *
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#ifndef EffectModel_h
#define EffectModel_h

#include "core/CSSPropertyNames.h"
#include "core/CoreExport.h"
#include "core/animation/PropertyHandle.h"
#include "platform/heap/Handle.h"
#include "wtf/HashMap.h"

namespace blink {

class Interpolation;

// Time independent representation of an Animation's content.
// Can be sampled for the active pairs of Keyframes (represented by
// Interpolations) at a given time fraction.
class CORE_EXPORT EffectModel : public GarbageCollectedFinalized<EffectModel> {
 public:
  enum CompositeOperation {
    CompositeReplace,
    CompositeAdd,
  };

  EffectModel() {}
  virtual ~EffectModel() {}
  virtual bool sample(int iteration,
                      double fraction,
                      double iterationDuration,
                      Vector<RefPtr<Interpolation>>&) const = 0;

  virtual bool affects(PropertyHandle) const { return false; }
  virtual bool isTransformRelatedEffect() const { return false; }
  virtual bool isKeyframeEffectModel() const { return false; }

  DEFINE_INLINE_VIRTUAL_TRACE() {}
};

}  // namespace blink

#endif  // EffectModel_h
