Migrate wheel events to EventHandlerRegistry

Source/core/dom/Node.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies)
  * Copyright (C) 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
@@ skipping 37 matching lines @@
 #include "core/dom/NodeRenderingTraversal.h"
 #include "core/dom/NodeTraversal.h"
 #include "core/dom/ProcessingInstruction.h"
 #include "core/dom/Range.h"
 #include "core/dom/StaticNodeList.h"
 #include "core/dom/TemplateContentDocumentFragment.h"
 #include "core/dom/Text.h"
 #include "core/dom/TreeScopeAdopter.h"
 #include "core/dom/UserActionElementSet.h"
 #include "core/dom/WeakNodeMap.h"
-#include "core/dom/WheelController.h"
 #include "core/dom/shadow/ElementShadow.h"
 #include "core/dom/shadow/InsertionPoint.h"
 #include "core/dom/shadow/ShadowRoot.h"
 #include "core/editing/htmlediting.h"
 #include "core/editing/markup.h"
 #include "core/events/Event.h"
 #include "core/events/EventDispatchMediator.h"
 #include "core/events/EventDispatcher.h"
 #include "core/events/EventListener.h"
 #include "core/events/GestureEvent.h"
@@ skipping 1853 matching lines @@
         }
     }
 
     if (AXObjectCache::accessibilityEnabled()) {
         if (AXObjectCache* cache = oldDocument.existingAXObjectCache())
             cache->remove(this);
     }
 
     oldDocument.markers().removeMarkers(this);
 
-    const EventListenerVector& mousewheelListeners = getEventListeners(EventTypeNames::mousewheel);
-    WheelController* oldController = WheelController::from(oldDocument);
-    WheelController* newController = WheelController::from(document());
-    for (size_t i = 0; i < mousewheelListeners.size(); ++i) {
-        oldController->didRemoveWheelEventHandler(oldDocument);
-        newController->didAddWheelEventHandler(document());
-    }
-
-    const EventListenerVector& wheelListeners = getEventListeners(EventTypeNames::wheel);
-    for (size_t i = 0; i < wheelListeners.size(); ++i) {
-        oldController->didRemoveWheelEventHandler(oldDocument);
-        newController->didAddWheelEventHandler(document());
-    }
 
     if (const TouchEventTargetSet* touchHandlers = oldDocument.touchEventTargets()) {
         while (touchHandlers->contains(this)) {
             oldDocument.didRemoveTouchEventHandler(this);
             document().didAddTouchEventHandler(this);
         }
     }
     if (oldDocument.frameHost() != document().frameHost()) {
         if (oldDocument.frameHost())
             oldDocument.frameHost()->eventHandlerRegistry().didMoveOutOfFrameHost(*this);
@@ skipping 14 matching lines @@
     }
 }
 
 static inline bool tryAddEventListener(Node* targetNode, const AtomicString& eventType, PassRefPtr<EventListener> listener, bool useCapture)
 {
     if (!targetNode->EventTarget::addEventListener(eventType, listener, useCapture))
         return false;
 
     Document& document = targetNode->document();
     document.addListenerTypeIfNeeded(eventType);
-    if (eventType == EventTypeNames::wheel || eventType == EventTypeNames::mousewheel)
-        WheelController::from(document)->didAddWheelEventHandler(document);
-    else if (isTouchEventType(eventType))
+    if (isTouchEventType(eventType))
         document.didAddTouchEventHandler(targetNode);
     if (document.frameHost())
         document.frameHost()->eventHandlerRegistry().didAddEventHandler(*targetNode, eventType);
 
     return true;
 }
 
 bool Node::addEventListener(const AtomicString& eventType, PassRefPtr<EventListener> listener, bool useCapture)
 {
     return tryAddEventListener(this, eventType, listener, useCapture);
 }
 
 static inline bool tryRemoveEventListener(Node* targetNode, const AtomicString& eventType, EventListener* listener, bool useCapture)
 {
     if (!targetNode->EventTarget::removeEventListener(eventType, listener, useCapture))
         return false;
 
     // FIXME: Notify Document that the listener has vanished. We need to keep track of a number of
     // listeners for each type, not just a bool - see https://bugs.webkit.org/show_bug.cgi?id=33861
     Document& document = targetNode->document();
-    if (eventType == EventTypeNames::wheel || eventType == EventTypeNames::mousewheel)
-        WheelController::from(document)->didRemoveWheelEventHandler(document);
-    else if (isTouchEventType(eventType))
+    if (isTouchEventType(eventType))
         document.didRemoveTouchEventHandler(targetNode);
     if (document.frameHost())
         document.frameHost()->eventHandlerRegistry().didRemoveEventHandler(*targetNode, eventType);
 
     return true;
 }
 
 bool Node::removeEventListener(const AtomicString& eventType, EventListener* listener, bool useCapture)
 {
     return tryRemoveEventListener(this, eventType, listener, useCapture);
@@ skipping 563 matching lines @@
         node->showTreeForThis();
 }
 
 void showNodePath(const WebCore::Node* node)
 {
     if (node)
         node->showNodePathForThis();
 }
 
 #endif