Make InvalidatableInterpolation's InterpolationTypes decided at effect application time

third_party/WebKit/Source/core/animation/InvalidatableInterpolation.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 InvalidatableInterpolation_h
 #define InvalidatableInterpolation_h
 
 #include "core/animation/InterpolationType.h"
+#include "core/animation/InterpolationTypesMap.h"
 #include "core/animation/PrimitiveInterpolation.h"
-#include "core/animation/PropertyInterpolationTypesMapping.h"
 #include "core/animation/StyleInterpolation.h"
 #include "core/animation/TypedInterpolationValue.h"
 #include <memory>
 
 namespace blink {
 
 // TODO(alancutter): This class will replace *StyleInterpolation and
 // Interpolation. For now it needs to distinguish itself during the refactor and
 // temporarily has an ugly name.
 class CORE_EXPORT InvalidatableInterpolation : public Interpolation {
  public:
   static PassRefPtr<InvalidatableInterpolation> create(
       PropertyHandle property,
-      const InterpolationTypes& interpolationTypes,
       PassRefPtr<PropertySpecificKeyframe> startKeyframe,
       PassRefPtr<PropertySpecificKeyframe> endKeyframe) {
-    return adoptRef(new InvalidatableInterpolation(property, interpolationTypes,
-                                                   std::move(startKeyframe),
-                                                   std::move(endKeyframe)));
+    return adoptRef(new InvalidatableInterpolation(
+        property, std::move(startKeyframe), std::move(endKeyframe)));
   }
 
   PropertyHandle getProperty() const final { return m_property; }
   virtual void interpolate(int iteration, double fraction);
   bool dependsOnUnderlyingValue() const final;
   virtual void apply(InterpolationEnvironment&) const { NOTREACHED(); }
   static void applyStack(const ActiveInterpolations&,
                          InterpolationEnvironment&);
 
   virtual bool isInvalidatableInterpolation() const { return true; }
 
  private:
   InvalidatableInterpolation(PropertyHandle property,
-                             const InterpolationTypes& interpolationTypes,
                              PassRefPtr<PropertySpecificKeyframe> startKeyframe,
                              PassRefPtr<PropertySpecificKeyframe> endKeyframe)
       : Interpolation(nullptr, nullptr),
         m_property(property),
-        m_interpolationTypes(interpolationTypes),
+        m_interpolationTypes(nullptr),
+        m_interpolationTypesVersion(0),
         m_startKeyframe(startKeyframe),
         m_endKeyframe(endKeyframe),
         m_currentFraction(std::numeric_limits<double>::quiet_NaN()),
         m_isConversionCached(false) {}
 
   using ConversionCheckers = InterpolationType::ConversionCheckers;
 
   std::unique_ptr<TypedInterpolationValue> maybeConvertUnderlyingValue(
       const InterpolationEnvironment&) const;
   const TypedInterpolationValue* ensureValidConversion(
       const InterpolationEnvironment&,
       const UnderlyingValueOwner&) const;
+  void ensureValidInterpolationTypes(const InterpolationEnvironment&) const;
   void clearConversionCache() const;
   bool isConversionCacheValid(const InterpolationEnvironment&,
                               const UnderlyingValueOwner&) const;
   bool isNeutralKeyframeActive() const;
   std::unique_ptr<PairwisePrimitiveInterpolation> maybeConvertPairwise(
       const InterpolationEnvironment&,
       const UnderlyingValueOwner&) const;
   std::unique_ptr<TypedInterpolationValue> convertSingleKeyframe(
       const PropertySpecificKeyframe&,
       const InterpolationEnvironment&,
       const UnderlyingValueOwner&) const;
   void addConversionCheckers(const InterpolationType&,
                              ConversionCheckers&) const;
   void setFlagIfInheritUsed(InterpolationEnvironment&) const;
   double underlyingFraction() const;
 
   const PropertyHandle m_property;
-  const InterpolationTypes& m_interpolationTypes;
+  mutable const InterpolationTypes* m_interpolationTypes;
+  mutable size_t m_interpolationTypesVersion;
   RefPtr<PropertySpecificKeyframe> m_startKeyframe;
   RefPtr<PropertySpecificKeyframe> m_endKeyframe;
   double m_currentFraction;
   mutable bool m_isConversionCached;
   mutable std::unique_ptr<PrimitiveInterpolation> m_cachedPairConversion;
   mutable ConversionCheckers m_conversionCheckers;
   mutable std::unique_ptr<TypedInterpolationValue> m_cachedValue;
 };
 
 DEFINE_TYPE_CASTS(InvalidatableInterpolation,
                   Interpolation,
                   value,
                   value->isInvalidatableInterpolation(),
                   value.isInvalidatableInterpolation());
 
 }  // namespace blink
 
 #endif  // InvalidatableInterpolation_h