third_party/WebKit/Source/core/animation/animatable/AnimatableRepeatable.h

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#ifndef AnimatableRepeatable_h
#define AnimatableRepeatable_h

#include "core/CoreExport.h"
#include "core/animation/animatable/AnimatableValue.h"
#include "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 CORE_EXPORT AnimatableRepeatable : public AnimatableValue {
 public:
  ~AnimatableRepeatable() override {}

  // 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) {
    DCHECK(!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);

  bool usesDefaultInterpolationWith(const AnimatableValue*) const override;

  Vector<RefPtr<AnimatableValue>> m_values;

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

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

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

}  // namespace blink

#endif  // AnimatableRepeatable_h