Introduce TreeScopeEventContext

Source/core/events/EventContext.cpp

 /*
  * Copyright (C) 2010 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:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 28 matching lines @@
     : m_node(node)
     , m_currentTarget(currentTarget)
 {
     ASSERT(m_node);
 }
 
 EventContext::~EventContext()
 {
 }
 
-void EventContext::adoptEventPath(Vector<RefPtr<Node> >& nodes)
+void SharedEventContext::adoptEventPath(Vector<RefPtr<Node> >& nodes)
 {
     m_eventPath = StaticNodeList::adopt(nodes);
 }
 
 void EventContext::handleLocalEvents(Event* event) const
 {
-    if (m_touchEventContext) {
-        m_touchEventContext->handleLocalEvents(event);
-    } else if (m_relatedTarget && event->isMouseEvent()) {
-        toMouseEvent(event)->setRelatedTarget(m_relatedTarget.get());
-    } else if (m_relatedTarget && event->isFocusEvent()) {
-        toFocusEvent(event)->setRelatedTarget(m_relatedTarget.get());
+    if (touchEventContext()) {
+        touchEventContext()->handleLocalEvents(event);
+    } else if (relatedTarget()) {
+        if (event->isMouseEvent()) {
+            toMouseEvent(event)->setRelatedTarget(relatedTarget());
+        } else if (event->isFocusEvent()) {
+            toFocusEvent(event)->setRelatedTarget(relatedTarget());
+        }
     }
-    event->setTarget(m_target);
+    event->setTarget(target());
     event->setCurrentTarget(m_currentTarget.get());
     m_node->handleLocalEvents(event);
 }
 
-TouchEventContext* EventContext::ensureTouchEventContext()
+TouchEventContext* SharedEventContext::ensureTouchEventContext()
 {
     if (!m_touchEventContext)
         m_touchEventContext = TouchEventContext::create();
     return m_touchEventContext.get();
 }
 
 PassRefPtr<TouchEventContext> TouchEventContext::create()
 {
     return adoptRef(new TouchEventContext);
 }
@@ skipping 11 matching lines @@
 
 void TouchEventContext::handleLocalEvents(Event* event) const
 {
     ASSERT(event->isTouchEvent());
     TouchEvent* touchEvent = toTouchEvent(event);
     touchEvent->setTouches(m_touches);
     touchEvent->setTargetTouches(m_targetTouches);
     touchEvent->setChangedTouches(m_changedTouches);
 }
 
+PassRefPtr<SharedEventContext> SharedEventContext::create(TreeScope& treeScope)
+{
+    return adoptRef(new SharedEventContext(treeScope));
 }
+
+SharedEventContext::SharedEventContext(TreeScope& treeScope)
+    : m_treeScope(treeScope)
+{
+}
+
+SharedEventContext::~SharedEventContext()
+{
+}
+
+}