Web Animations: Introduce String based KeyframeEffectModel

Source/core/animation/AnimatableValueKeyframe.h

+// Copyright 2014 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 AnimatableValueKeyframe_h
+#define AnimatableValueKeyframe_h
+
+#include "core/animation/AnimatableValue.h"
+#include "core/animation/Keyframe.h"
+
+namespace WebCore {
+
+class AnimatableValueKeyframe : public Keyframe {
+public:
+    static PassRefPtr<AnimatableValueKeyframe> create() { return adoptRef(new AnimatableValueKeyframe); }
+    void setPropertyValue(CSSPropertyID property, PassRefPtr<AnimatableValue> value)
+    {
+        m_propertyValues.add(property, value);
+    }
+    void clearPropertyValue(CSSPropertyID property) { m_propertyValues.remove(property); }
+    AnimatableValue* propertyValue(CSSPropertyID property) const
+    {
+        ASSERT(m_propertyValues.contains(property));
+        return m_propertyValues.get(property);
+    }
+    virtual PropertySet properties() const OVERRIDE
+    {
+        // This is not used in time-critical code, so we probably don't need to
+        // worry about caching this result.
+        PropertySet properties;
+        for (typename PropertyValueMap::const_iterator iter = m_propertyValues.begin(); iter != m_propertyValues.end(); ++iter)
+            properties.add(*iter.keys());
+        return properties;
+    }
+
+    class PropertySpecificKeyframe : public Keyframe::PropertySpecificKeyframe {
+    public:
+        PropertySpecificKeyframe(double offset, PassRefPtr<TimingFunction> easing, const AnimatableValue* value, AnimationEffect::CompositeOperation op)
+            : Keyframe::PropertySpecificKeyframe(offset, easing, op)
+            , m_value(PassRefPtr<AnimatableValue>(const_cast<AnimatableValue*>(value)))
+        {
+        }
+
+        AnimatableValue* value() const { return m_value.get(); }
+
+        virtual PassOwnPtr<Keyframe::PropertySpecificKeyframe> neutralKeyframe(double offset, PassRefPtr<TimingFunction> easing) const OVERRIDE FINAL;
+        virtual PassRefPtr<Interpolation> createInterpolation(CSSPropertyID, WebCore::Keyframe::PropertySpecificKeyframe *end) const OVERRIDE FINAL;
+
+    private:
+        PropertySpecificKeyframe(double offset, PassRefPtr<TimingFunction> easing, PassRefPtr<AnimatableValue> value)
+            : Keyframe::PropertySpecificKeyframe(offset, easing, AnimationEffect::CompositeReplace)
+            , m_value(value)
+        {
+            ASSERT(!isNull(m_offset));
+        }
+
+        virtual PassOwnPtr<Keyframe::PropertySpecificKeyframe> cloneWithOffset(double offset) const OVERRIDE
+        {
+            Keyframe::PropertySpecificKeyframe *theClone = new PropertySpecificKeyframe(offset, m_easing, m_value);
+            return adoptPtr(theClone);
+        }
+        virtual bool isAnimatableValuePropertySpecificKeyframe() const OVERRIDE { return true; }
+
+        RefPtr<AnimatableValue> m_value;
+    };
+
+private:
+    AnimatableValueKeyframe()
+        : Keyframe()
+    {
+    }
+    AnimatableValueKeyframe(const AnimatableValueKeyframe& copyFrom)
+        : Keyframe(copyFrom.m_offset, copyFrom.m_composite, copyFrom.m_easing)
+    {
+        for (typename PropertyValueMap::const_iterator iter = copyFrom.m_propertyValues.begin(); iter != copyFrom.m_propertyValues.end(); ++iter)
+            setPropertyValue(iter->key, iter->value.get());
+    }
+
+    virtual PassRefPtrWillBeRawPtr<Keyframe> clone() const OVERRIDE
+    {
+        return adoptRefWillBeNoop(new AnimatableValueKeyframe(*this));
+    }
+    virtual PassOwnPtr<Keyframe::PropertySpecificKeyframe> createPropertySpecificKeyframe(CSSPropertyID property) const OVERRIDE
+    {
+        return adoptPtr(new PropertySpecificKeyframe(offset(), easing(), propertyValue(property), composite()));
+    }
+    virtual bool isAnimatableValueKeyframe() const OVERRIDE { return true; }
+
+    typedef HashMap<CSSPropertyID, RefPtr<AnimatableValue> > PropertyValueMap;
+    PropertyValueMap m_propertyValues;
+};
+
+}
+
+#endif