Declare onFinish event handler for AnimationPlayer

Source/core/animation/AnimationPlayer.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
@@ skipping 14 matching lines @@
  * 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 AnimationPlayer_h
 #define AnimationPlayer_h
 
 #include "core/animation/TimedItem.h"
+#include "core/dom/ActiveDOMObject.h"
+#include "core/events/EventTarget.h"
 #include "wtf/RefPtr.h"
 
 namespace WebCore {
 
 class DocumentTimeline;
 class ExceptionState;
 
-class AnimationPlayer FINAL : public RefCounted<AnimationPlayer> {
-
+class AnimationPlayer FINAL : public RefCounted<AnimationPlayer>, public EventTargetWithInlineData, public ActiveDOMObject {

[dstockwell, 2014/03/31 06:32:53]

Why does AnimationPlayer become an ActiveDOMObject?

[Eric Willigers, 2014/03/31 08:48:47]

Changed to use ContextLifecycleObserver.

As an event target, we need to provide the executionContext, and
ContextLifecycleObserver stores it.

The majority of event targets inherit from ContextLifecycleObserver, directly or
through ActiveDOMObject.

+    REFCOUNTED_EVENT_TARGET(AnimationPlayer);
 public:
     ~AnimationPlayer();
-    static PassRefPtr<AnimationPlayer> create(DocumentTimeline&, TimedItem*);
+    static PassRefPtr<AnimationPlayer> create(ExecutionContext*, DocumentTimeline&, TimedItem*);
 
     // Returns whether this player is still current or in effect.
     bool update();
 
     // timeToEffectChange returns:
     //  infinity  - if this player is no longer in effect
     //  0         - if this player requires an update on the next frame
     //  n         - if this player requires an update after 'n' units of time
     double timeToEffectChange();
 
     void cancel();
 
     double currentTime();
     void setCurrentTime(double newCurrentTime);
 
     bool paused() const { return m_paused && !m_isPausedForTesting; }
     void pause();
     void play();
     void reverse();
     void finish(ExceptionState&);
     bool finished() { return limited(currentTime()); }
 
+    DEFINE_ATTRIBUTE_EVENT_LISTENER(finish);
+
+    virtual const AtomicString& interfaceName() const OVERRIDE;
+    virtual ExecutionContext* executionContext() const OVERRIDE;
+
     double playbackRate() const { return m_playbackRate; }
     void setPlaybackRate(double);
     const DocumentTimeline* timeline() const { return m_timeline; }
     DocumentTimeline* timeline() { return m_timeline; }
 
     void timelineDestroyed() { m_timeline = 0; }
 
     bool hasStartTime() const { return !isNull(m_startTime); }
     double startTime() const { return m_startTime; }
     void setStartTime(double);
@@ skipping 32 matching lines @@
     };
 
     const SortInfo& sortInfo() const { return m_sortInfo; }
 
     static bool hasLowerPriority(AnimationPlayer* player1, AnimationPlayer* player2)
     {
         return player1->sortInfo() < player2->sortInfo();
     }
 
 private:
-    AnimationPlayer(DocumentTimeline&, TimedItem*);
+    AnimationPlayer(ExecutionContext*, DocumentTimeline&, TimedItem*);
     double sourceEnd() const;
     bool limited(double currentTime) const;
     double currentTimeWithoutLag() const;
     double currentTimeWithLag() const;
     void updateTimingState(double newCurrentTime);
     void updateCurrentTimingState();
 
     double m_playbackRate;
     double m_startTime;
     double m_holdTime;
@@ skipping 11 matching lines @@
     bool m_isPausedForTesting;
 
     // This indicates timing information relevant to the player has changed by
     // means other than the ordinary progression of time
     bool m_outdated;
 };
 
 } // namespace
 
 #endif