Web Animations: Trigger and update CSS Animations backed by the Web Animations model

Source/core/animation/css/CSSAnimations.h

+/*
+ * Copyright (C) 2013 Google Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef CSSAnimations_h
+#define CSSAnimations_h
+
+#include "core/animation/Animation.h"
+
+#include "core/animation/Player.h"
+#include "core/css/StylePropertySet.h"
+#include "core/platform/animation/CSSAnimationData.h"
+#include "core/rendering/style/RenderStyleConstants.h"
+#include "wtf/HashMap.h"
+#include "wtf/HashSet.h"
+#include "wtf/Vector.h"
+#include "wtf/text/AtomicString.h"
+
+namespace WebCore {
+
+class CSSAnimationDataList;
+class Element;
+class RenderObject;
+class StyleResolver;
+
+class CSSAnimationUpdate FINAL {
+public:
+    const StylePropertySet* styles() const { return m_styles.get(); }
+    bool isFiltered(const Player* player) const { return m_filtered.contains(player); }

[Steve Block, 2013/08/06 03:57:01]

isFiltered() seems like a rather generic name. Can you make it more explicit or
add a comment?

[dstockwell, 2013/08/06 05:43:25]

Don't have a better name, added a comment.

+    void cancel(const Player* player)
+    {
+        m_filtered.add(player);
+    }
+    void addStyles(const StylePropertySet* styles)
+    {
+        if (!m_styles)
+            m_styles = MutableStylePropertySet::create();
+        m_styles->mergeAndOverrideOnConflict(styles);
+    }
+private:
+    HashSet<const Player*> m_filtered;
+    RefPtr<MutableStylePropertySet> m_styles;
+};
+
+class CSSAnimations FINAL {
+public:
+    static bool needsUpdate(const Element*, const RenderStyle*);
+    static PassOwnPtr<CSSAnimationUpdate> calculateUpdate(const Element*, EDisplay, const CSSAnimations*, const CSSAnimationDataList*, StyleResolver*);
+    void update(Element*, const RenderStyle*);
+    bool isEmpty() const { return m_animations.isEmpty(); }
+    void cancel();
+private:
+    typedef HashMap<StringImpl*, Player*> AnimationMap;
+    AnimationMap m_animations;
+};
+
+} // namespace WebCore
+
+#endif