[Reland] Web Animations: Introduce String based KeyframeEffectModel

Source/core/animation/StringKeyframe.cpp

Index: Source/core/animation/StringKeyframe.cpp
diff --git a/Source/core/animation/StringKeyframe.cpp b/Source/core/animation/StringKeyframe.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..e3d84df09f7173d10f6d98aeffe20cecce873ad6
--- /dev/null
+++ b/Source/core/animation/StringKeyframe.cpp
@@ -0,0 +1,77 @@
+// 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.
+
+#include "config.h"
+#include "core/animation/StringKeyframe.h"
+
+#include "core/animation/Interpolation.h"
+
+namespace WebCore {
+
+StringKeyframe::StringKeyframe(const StringKeyframe& copyFrom)
+    : Keyframe(copyFrom.m_offset, copyFrom.m_composite, copyFrom.m_easing)
+{
+    for (PropertyValueMap::const_iterator iter = copyFrom.m_propertyValues.begin(); iter != copyFrom.m_propertyValues.end(); ++iter)
+        setPropertyValue(iter->key, iter->value);
+}
+
+PropertySet StringKeyframe::properties() const
+{
+    // This is not used in time-critical code, so we probably don't need to
+    // worry about caching this result.
+    PropertySet properties;
+    for (PropertyValueMap::const_iterator iter = m_propertyValues.begin(); iter != m_propertyValues.end(); ++iter)
+        properties.add(*iter.keys());
+    return properties;
+}
+
+PassRefPtrWillBeRawPtr<Keyframe> StringKeyframe::clone() const
+{
+    return adoptRefWillBeNoop(new StringKeyframe(*this));
+}
+PassOwnPtrWillBeRawPtr<Keyframe::PropertySpecificKeyframe> StringKeyframe::createPropertySpecificKeyframe(CSSPropertyID property) const
+{
+    return adoptPtrWillBeNoop(new PropertySpecificKeyframe(offset(), easing(), propertyValue(property), composite()));
+}
+
+void StringKeyframe::trace(Visitor* visitor)
+{
+    Keyframe::trace(visitor);
+}
+
+StringKeyframe::PropertySpecificKeyframe::PropertySpecificKeyframe(double offset, PassRefPtr<TimingFunction> easing, const String& value, AnimationEffect::CompositeOperation op)
+    : Keyframe::PropertySpecificKeyframe(offset, easing, op)
+    , m_value(value)
+{ }
+
+StringKeyframe::PropertySpecificKeyframe::PropertySpecificKeyframe(double offset, PassRefPtr<TimingFunction> easing, const String& value)
+    : Keyframe::PropertySpecificKeyframe(offset, easing, AnimationEffect::CompositeReplace)
+    , m_value(value)
+{
+    ASSERT(!isNull(m_offset));
+}
+
+PassRefPtrWillBeRawPtr<Interpolation> StringKeyframe::PropertySpecificKeyframe::createInterpolation(CSSPropertyID property, Keyframe::PropertySpecificKeyframe* end) const
+{
+    ASSERT_UNUSED(end, end);
+    // FIXME: Convert string keyframe value pairs to interpolations.
+    return nullptr;
+}
+
+PassOwnPtrWillBeRawPtr<Keyframe::PropertySpecificKeyframe> StringKeyframe::PropertySpecificKeyframe::neutralKeyframe(double offset, PassRefPtr<TimingFunction> easing) const
+{
+    return adoptPtrWillBeNoop(new StringKeyframe::PropertySpecificKeyframe(offset, easing, emptyString(), AnimationEffect::CompositeAdd));
+}
+
+PassOwnPtrWillBeRawPtr<Keyframe::PropertySpecificKeyframe> StringKeyframe::PropertySpecificKeyframe::cloneWithOffset(double offset) const
+{
+    Keyframe::PropertySpecificKeyframe *theClone = new PropertySpecificKeyframe(offset, m_easing, m_value);
+    return adoptPtrWillBeNoop(theClone);
+}
+
+void StringKeyframe::PropertySpecificKeyframe::trace(Visitor* visitor)
+{
+}
+
+}