Changes to fix the bookmarks menu crashing problem.

content/events/public/nsIEventListenerManager.h

@@ -87,6 +87,15 @@ public:
                                nsIDOMEvent** aDOMEvent,
                                nsEventStatus& aEventStatus) = 0;
 
+  /**
+  * Creates a DOM event that can subsequently be passed into HandleEvent.
+  * (used rarely in the situation where methods on the event need to be
+  * invoked prior to the processing of the event).
+  */
+  virtual nsresult CreateEvent(nsIPresContext& aPresContext,
+                               nsEvent* aEvent,
+                               nsIDOMEvent** aDOMEvent) = 0;
+
   /**
   * Captures all events designated for descendant objects at the current level.
   * @param an event listener

content/events/src/nsDOMEvent.cpp

@@ -127,7 +127,12 @@ NS_METHOD nsDOMEvent::GetTarget(nsIDOMNode** aTarget)
 
 NS_METHOD nsDOMEvent::SetTarget(nsIDOMNode* aTarget)
 {
-  return NS_ERROR_NOT_IMPLEMENTED;
+  if (mTarget != aTarget) {
+    NS_IF_RELEASE(mTarget);
+    NS_IF_ADDREF(aTarget);
+    mTarget = aTarget;
+  }
+  return NS_OK;
 }
 
 NS_METHOD nsDOMEvent::GetScreenX(PRInt32* aScreenX)

content/events/src/nsEventListenerManager.cpp

@@ -538,6 +538,17 @@ nsresult nsEventListenerManager::HandleEvent(nsIPresContext& aPresContext,
   return NS_OK;
 }
 
+/**
+* Creates a DOM event
+*/
+
+nsresult nsEventListenerManager::CreateEvent(nsIPresContext& aPresContext,
+                                             nsEvent* aEvent,
+                                             nsIDOMEvent** aDOMEvent)
+{
+    return NS_NewDOMEvent(aDOMEvent, aPresContext, aEvent);
+}
+
 /**
 * Captures all events designated for descendant objects at the current level.
 * @param an event listener

content/events/src/nsEventListenerManager.h

@@ -72,6 +72,10 @@ public:
                                nsIDOMEvent** aDOMEvent, 
                                nsEventStatus& aEventStatus);
 
+  virtual nsresult CreateEvent(nsIPresContext& aPresContext, 
+                               nsEvent* aEvent, 
+                               nsIDOMEvent** aDOMEvent);
+
 protected:
   nsresult SetJSEventListener(nsIScriptContext *aContext, JSObject *aObject, REFNSIID aIID);
 

layout/events/public/nsIEventListenerManager.h

@@ -87,6 +87,15 @@ public:
                                nsIDOMEvent** aDOMEvent,
                                nsEventStatus& aEventStatus) = 0;
 
+  /**
+  * Creates a DOM event that can subsequently be passed into HandleEvent.
+  * (used rarely in the situation where methods on the event need to be
+  * invoked prior to the processing of the event).
+  */
+  virtual nsresult CreateEvent(nsIPresContext& aPresContext,
+                               nsEvent* aEvent,
+                               nsIDOMEvent** aDOMEvent) = 0;
+
   /**
   * Captures all events designated for descendant objects at the current level.
   * @param an event listener

layout/events/src/nsDOMEvent.cpp

@@ -127,7 +127,12 @@ NS_METHOD nsDOMEvent::GetTarget(nsIDOMNode** aTarget)
 
 NS_METHOD nsDOMEvent::SetTarget(nsIDOMNode* aTarget)
 {
-  return NS_ERROR_NOT_IMPLEMENTED;
+  if (mTarget != aTarget) {
+    NS_IF_RELEASE(mTarget);
+    NS_IF_ADDREF(aTarget);
+    mTarget = aTarget;
+  }
+  return NS_OK;
 }
 
 NS_METHOD nsDOMEvent::GetScreenX(PRInt32* aScreenX)

layout/events/src/nsEventListenerManager.cpp

@@ -538,6 +538,17 @@ nsresult nsEventListenerManager::HandleEvent(nsIPresContext& aPresContext,
   return NS_OK;
 }
 
+/**
+* Creates a DOM event
+*/
+
+nsresult nsEventListenerManager::CreateEvent(nsIPresContext& aPresContext,
+                                             nsEvent* aEvent,
+                                             nsIDOMEvent** aDOMEvent)
+{
+    return NS_NewDOMEvent(aDOMEvent, aPresContext, aEvent);
+}
+
 /**
 * Captures all events designated for descendant objects at the current level.
 * @param an event listener

layout/events/src/nsEventListenerManager.h

@@ -72,6 +72,10 @@ public:
                                nsIDOMEvent** aDOMEvent, 
                                nsEventStatus& aEventStatus);
 
+  virtual nsresult CreateEvent(nsIPresContext& aPresContext, 
+                               nsEvent* aEvent, 
+                               nsIDOMEvent** aDOMEvent);
+
 protected:
   nsresult SetJSEventListener(nsIScriptContext *aContext, JSObject *aObject, REFNSIID aIID);