[oilpan] Move EventHandler to the heap

Source/core/page/EventHandler.cpp

 /*
  * Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2006 Alexey Proskuryakov (ap@webkit.org)
  * Copyright (C) 2012 Digia Plc. and/or its subsidiary(-ies)
  *
  * 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.
@@ skipping 93 matching lines @@
 #include "core/svg/SVGElementInstance.h"
 #include "core/svg/SVGUseElement.h"
 #endif
 
 #if ENABLE(CSS_IMAGE_SET)
 #include "core/rendering/style/StyleCachedImageSet.h"
 #endif
 
 namespace WebCore {
 
+DEFINE_GC_MAP(EventHandler);
+
 using namespace HTMLNames;
 
 // The link drag hysteresis is much larger than the others because there
 // needs to be enough space to cancel the link press without starting a link drag,
 // and because dragging links is rare.
 const int LinkDragHysteresis = 40;
 const int ImageDragHysteresis = 5;
 const int TextDragHysteresis = 3;
 const int GeneralDragHysteresis = 3;
 
@@ skipping 230 matching lines @@
     m_mousePositionIsUnknown = true;
     m_lastKnownMousePosition = IntPoint();
     m_lastKnownMouseGlobalPosition = IntPoint();
     m_lastMouseDownUserGestureToken.clear();
     m_mousePressNode = nullptr;
     m_mousePressed = false;
     m_capturesDragging = false;
     m_capturingMouseEventsNode = nullptr;
     m_latchedWheelEventNode = nullptr;
     m_previousWheelScrolledNode = nullptr;
-    m_originatingTouchPointTargets->clear();
+    m_originatingTouchPointTargets.clear();
     m_originatingTouchPointDocument.clear();
     m_originatingTouchPointTargetKey = 0;
     m_scrollGestureHandlingNode = nullptr;
     m_lastHitTestResultOverWidget = false;
     m_previousGestureScrolledNode = nullptr;
     m_scrollbarHandlingScrollGesture = 0;
     m_maxMouseMovedDuration = 0;
     m_baseEventType = PlatformEvent::NoType;
     m_didStartDrag = false;
     m_didLongPressInvokeContextMenu = false;
@@ skipping 3390 matching lines @@
             HANDLE(Document) doc = node->document();
             // Record the originating touch document even if it does not have a touch listener.
             if (freshTouchEvents) {
                 m_originatingTouchPointDocument = doc;
                 freshTouchEvents = false;
             }
             if (!doc)
                 continue;
             if (!doc->hasTouchEventHandlers())
                 continue;
-            m_originatingTouchPointTargets->set(touchPointTargetKey, node);
+            m_originatingTouchPointTargets.set(touchPointTargetKey, node);
             touchTarget = node;
         } else if (pointState == PlatformTouchPoint::TouchReleased || pointState == PlatformTouchPoint::TouchCancelled) {
             // We only perform a hittest on release or cancel to unset :active or :hover state.
             if (touchPointTargetKey == m_originatingTouchPointTargetKey) {
                 hitTestResultAtPoint(pagePoint, hitType);
                 m_originatingTouchPointTargetKey = 0;
             } else if (m_originatingTouchPointDocument && m_originatingTouchPointDocument->frame()) {
                 LayoutPoint pagePointInOriginatingDocument = documentPointForWindowPoint(m_originatingTouchPointDocument->frame(), point.pos());
                 hitTestResultInFrame(m_originatingTouchPointDocument->frame(), pagePointInOriginatingDocument, hitType);
             }
             // The target should be the original target for this touch, so get it from the hashmap. As it's a release or cancel
             // we also remove it from the map.
-            touchTarget = m_originatingTouchPointTargets->take(touchPointTargetKey);
+            touchTarget = m_originatingTouchPointTargets.take(touchPointTargetKey);
         } else
             // No hittest is performed on move or stationary, since the target is not allowed to change anyway.
-            touchTarget = m_originatingTouchPointTargets->get(touchPointTargetKey);
+            touchTarget = m_originatingTouchPointTargets.get(touchPointTargetKey);
 
         if (!touchTarget)
             continue;
         HANDLE(Document) doc = touchTarget->toNode()->document();
         if (!doc)
             continue;
         if (!doc->hasTouchEventHandlers())
             continue;
         Frame* targetFrame = doc->frame();
         if (!targetFrame)
@@ skipping 200 matching lines @@
 
 unsigned EventHandler::accessKeyModifiers()
 {
 #if OS(DARWIN)
     return PlatformEvent::CtrlKey | PlatformEvent::AltKey;
 #else
     return PlatformEvent::AltKey;
 #endif
 }
 
+void EventHandler::accept(Visitor* visitor) const
+{
+    visitor->visit(m_mousePressNode);
+    visitor->visit(m_capturingMouseEventsNode);
+    visitor->visit(m_nodeUnderMouse);
+    visitor->visit(m_lastNodeUnderMouse);
+    visitor->visit(m_clickNode);
+    visitor->visit(m_dragTarget);
+    visitor->visit(m_frameSetBeingResized);
+    visitor->visit(m_latchedWheelEventNode);
+    visitor->visit(m_previousWheelScrolledNode);
+    visitor->visit(m_originatingTouchPointDocument);
+    visitor->visit(m_scrollGestureHandlingNode);
+    visitor->visit(m_previousGestureScrolledNode);
+    visitor->visit(m_originatingTouchPointTargets);
+}
+
 } // namespace WebCore