Continuing fix for bug 18843. Added onload and onerror events for loaded scripts. r=nisheeth, sr=jst

content/base/src/nsGenericElement.cpp

@@ -1471,7 +1471,8 @@ nsGenericElement::HandleDOMEvent(nsIPresContext* aPresContext,
 
   PRBool intermediateCapture = PR_FALSE;
   //Capturing stage evaluation
-  if (NS_EVENT_FLAG_BUBBLE != aFlags && aEvent->message != NS_PAGE_LOAD) {
+  if (NS_EVENT_FLAG_BUBBLE != aFlags && aEvent->message != NS_PAGE_LOAD
+      && aEvent->message != NS_SCRIPT_LOAD) {
     //Initiate capturing phase.  Special case first call to document
     if (parent) {
       parent->HandleDOMEvent(aPresContext, aEvent, aDOMEvent, NS_EVENT_FLAG_CAPTURE, aEventStatus);
@@ -1510,7 +1511,8 @@ nsGenericElement::HandleDOMEvent(nsIPresContext* aPresContext,
 
   //Bubbling stage
   if (NS_EVENT_FLAG_CAPTURE != aFlags && mDocument &&
-      aEvent->message != NS_PAGE_LOAD) {
+      aEvent->message != NS_PAGE_LOAD &&
+      aEvent->message != NS_SCRIPT_LOAD) {
     if (parent) {
       /*
        * If there's a parent we pass the event to the parent...

content/events/src/nsDOMEvent.cpp

@@ -1342,6 +1342,7 @@ const char* nsDOMEvent::GetEventName(PRUint32 aEventType)
     return mEventNames[eDOMEvents_close];
   case NS_PAGE_LOAD:
   case NS_IMAGE_LOAD:
+  case NS_SCRIPT_LOAD:
     return mEventNames[eDOMEvents_load];
   case NS_PAGE_UNLOAD:
     return mEventNames[eDOMEvents_unload];

content/events/src/nsEventListenerManager.cpp

@@ -191,14 +191,14 @@ nsEventListenerManager::QueryInterface(REFNSIID aIID, void** aInstancePtr)
     AddRef();
     return NS_OK;
   }
+  if (mTarget) {
+    return mTarget->QueryInterface(aIID, aInstancePtr);
+  }
   if (aIID.Equals(NS_GET_IID(nsISupports))) {
     *aInstancePtr = (void*)(nsISupports*)(nsIEventListenerManager*)this;
     AddRef();
     return NS_OK;
   }
-  if (mTarget) {
-    return mTarget->QueryInterface(aIID, aInstancePtr);
-  }
   return NS_NOINTERFACE;
 }
 
@@ -981,6 +981,8 @@ nsEventListenerManager::RegisterScriptEventListener(nsIScriptContext *aContext,
   if (NS_FAILED(rv))
       return rv;
 
+  nsCOMPtr<nsIClassInfo> classInfo = do_QueryInterface(aObject);
+
   if (NS_FAILED(rv = securityManager->CheckPropertyAccess(cx, jsobj,
                 "EventTarget","addEventListener",
                 nsIXPCSecurityManager::ACCESS_SET_PROPERTY))) {
@@ -1762,6 +1764,7 @@ nsresult nsEventListenerManager::HandleEvent(nsIPresContext* aPresContext,
     case NS_PAGE_UNLOAD:
     case NS_IMAGE_LOAD:
     case NS_IMAGE_ERROR:
+    case NS_SCRIPT_LOAD:
     case NS_SCRIPT_ERROR:
       listeners = GetListenersByType(eEventArrayType_Load, nsnull, PR_FALSE);
       if (listeners) {
@@ -1778,6 +1781,7 @@ nsresult nsEventListenerManager::HandleEvent(nsIPresContext* aPresContext,
                 switch(aEvent->message) {
                   case NS_PAGE_LOAD:
                   case NS_IMAGE_LOAD:
+                  case NS_SCRIPT_LOAD: 
                     ret = loadListener->Load(*aDOMEvent);
                     break;
                   case NS_PAGE_UNLOAD:
@@ -1796,6 +1800,7 @@ nsresult nsEventListenerManager::HandleEvent(nsIPresContext* aPresContext,
                 switch(aEvent->message) {
                   case NS_PAGE_LOAD:
                   case NS_IMAGE_LOAD:
+                  case NS_SCRIPT_LOAD:
                     subType = NS_EVENT_BITS_LOAD_LOAD;
                     if (ls->mSubType & NS_EVENT_BITS_LOAD_LOAD) {
                       correctSubType = PR_TRUE;

content/html/content/src/nsHTMLScriptElement.cpp

@@ -296,6 +296,20 @@ nsHTMLScriptElement::ScriptAvailable(nsresult aResult,
                                      PRInt32 aLineNo,
                                      const nsAString& aScript)
 {
+  nsresult rv = NS_OK;
+  if (!aIsInline && NS_FAILED(aResult)) {
+    nsCOMPtr<nsIPresContext> presContext;
+    GetPresContext(this, getter_AddRefs(presContext)); 
+
+    nsEventStatus status = nsEventStatus_eIgnore;
+    nsEvent event;
+    event.eventStructType = NS_EVENT;
+
+    event.message = NS_SCRIPT_ERROR;
+    rv = HandleDOMEvent(presContext, &event, nsnull, NS_EVENT_FLAG_INIT,
+                        &status);
+  }
+
   return NS_OK;
 }
 
@@ -306,7 +320,21 @@ nsHTMLScriptElement::ScriptEvaluated(nsresult aResult,
                                      PRBool aIsInline,
                                      PRBool aWasPending)
 {
-  return NS_OK;
+  nsresult rv = NS_OK;
+  if (!aIsInline) {
+    nsCOMPtr<nsIPresContext> presContext;
+    GetPresContext(this, getter_AddRefs(presContext)); 
+
+    nsEventStatus status = nsEventStatus_eIgnore;
+    nsEvent event;
+    event.eventStructType = NS_EVENT;
+
+    event.message = NS_SUCCEEDED(aResult) ? NS_SCRIPT_LOAD : NS_SCRIPT_ERROR;
+    rv = HandleDOMEvent(presContext, &event, nsnull, NS_EVENT_FLAG_INIT,
+                        &status);
+  }
+
+  return rv;
 }
 
 NS_IMETHODIMP 

widget/public/nsGUIEvent.h

@@ -444,7 +444,8 @@ enum nsDragDropEventStatus {
 #define NS_IMAGE_LOAD                   (NS_STREAM_EVENT_START + 2)
 #define NS_IMAGE_ABORT                  (NS_STREAM_EVENT_START + 3)
 #define NS_IMAGE_ERROR                  (NS_STREAM_EVENT_START + 4)
-
+#define NS_SCRIPT_LOAD                  (NS_STREAM_EVENT_START + 5)
+ 
 #define NS_FORM_EVENT_START             1200
 #define NS_FORM_SUBMIT                  (NS_FORM_EVENT_START)
 #define NS_FORM_RESET                   (NS_FORM_EVENT_START + 1)