Pass implementation object to supplemental classes by reference

Source/core/events/EventTarget.h

 /*
  * 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 Apple Inc. All rights reserved.
  * Copyright (C) 2006 Alexey Proskuryakov (ap@webkit.org)
  *           (C) 2007, 2008 Nikolas Zimmermann <zimmermann@kde.org>
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
@@ skipping 144 matching lines @@
     EventTargetData m_eventTargetData;
 };
 
 // FIXME: These macros should be split into separate DEFINE and DECLARE
 // macros to avoid causing so many header includes.
 #define DEFINE_ATTRIBUTE_EVENT_LISTENER(attribute) \
     EventListener* on##attribute() { return getAttributeEventListener(EventTypeNames::attribute); } \
     void setOn##attribute(PassRefPtr<EventListener> listener) { setAttributeEventListener(EventTypeNames::attribute, listener); } \
 
 #define DEFINE_STATIC_ATTRIBUTE_EVENT_LISTENER(attribute) \
-    static EventListener* on##attribute(EventTarget* eventTarget) { return eventTarget->getAttributeEventListener(EventTypeNames::attribute); } \
-    static void setOn##attribute(EventTarget* eventTarget, PassRefPtr<EventListener> listener) { eventTarget->setAttributeEventListener(EventTypeNames::attribute, listener); } \
+    static EventListener* on##attribute(EventTarget& eventTarget) { return eventTarget.getAttributeEventListener(EventTypeNames::attribute); } \
+    static void setOn##attribute(EventTarget& eventTarget, PassRefPtr<EventListener> listener) { eventTarget.setAttributeEventListener(EventTypeNames::attribute, listener); } \
 
 #define DEFINE_WINDOW_ATTRIBUTE_EVENT_LISTENER(attribute) \
     EventListener* on##attribute() { return document().getWindowAttributeEventListener(EventTypeNames::attribute); } \
     void setOn##attribute(PassRefPtr<EventListener> listener) { document().setWindowAttributeEventListener(EventTypeNames::attribute, listener); } \
 
 #define DEFINE_STATIC_WINDOW_ATTRIBUTE_EVENT_LISTENER(attribute) \
-    static EventListener* on##attribute(EventTarget* eventTarget) { \
-        if (Node* node = eventTarget->toNode()) \
+    static EventListener* on##attribute(EventTarget& eventTarget) { \
+        if (Node* node = eventTarget.toNode()) \
             return node->document().getWindowAttributeEventListener(EventTypeNames::attribute); \
-        ASSERT(eventTarget->toDOMWindow()); \
-        return eventTarget->getAttributeEventListener(EventTypeNames::attribute); \
+        ASSERT(eventTarget.toDOMWindow()); \
+        return eventTarget.getAttributeEventListener(EventTypeNames::attribute); \
     } \
-    static void setOn##attribute(EventTarget* eventTarget, PassRefPtr<EventListener> listener) { \
-        if (Node* node = eventTarget->toNode()) \
+    static void setOn##attribute(EventTarget& eventTarget, PassRefPtr<EventListener> listener) { \
+        if (Node* node = eventTarget.toNode()) \
             node->document().setWindowAttributeEventListener(EventTypeNames::attribute, listener); \
         else { \
-            ASSERT(eventTarget->toDOMWindow()); \
-            eventTarget->setAttributeEventListener(EventTypeNames::attribute, listener); \
+            ASSERT(eventTarget.toDOMWindow()); \
+            eventTarget.setAttributeEventListener(EventTypeNames::attribute, listener); \
         } \
     }
 
 #define DEFINE_MAPPED_ATTRIBUTE_EVENT_LISTENER(attribute, eventName) \
     EventListener* on##attribute() { return getAttributeEventListener(EventTypeNames::eventName); } \
     void setOn##attribute(PassRefPtr<EventListener> listener) { setAttributeEventListener(EventTypeNames::eventName, listener); } \
 
 #define DECLARE_FORWARDING_ATTRIBUTE_EVENT_LISTENER(recipient, attribute) \
     EventListener* on##attribute(); \
     void setOn##attribute(PassRefPtr<EventListener> listener);
@@ skipping 40 matching lines @@
     virtual void refEventTarget() OVERRIDE FINAL { ref(); } \
     virtual void derefEventTarget() OVERRIDE FINAL { deref(); } \
     typedef int thisIsHereToForceASemiColonAfterThisEventTargetMacro
 
 // Use this macro if your EventTarget subclass is also a subclass of WTF::RefCounted.
 // A ref-counted class that uses a different method of refcounting should use DEFINE_EVENT_TARGET_REFCOUNTING directly.
 // Both of these macros are meant to be placed just before the "public:" section of the class declaration.
 #define REFCOUNTED_EVENT_TARGET(className) DEFINE_EVENT_TARGET_REFCOUNTING(RefCounted<className>)
 
 #endif // EventTarget_h