nsresult
nsEventListenerManager::SetEventHandlerInternal(nsIScriptContext *aContext,
JS::Handle<JSObject*> aScopeObject,
nsIAtom* aName,
const nsEventHandler& aHandler,
bool aPermitUntrustedEvents,
nsListenerStruct **aListenerStruct)
{
NS_ASSERTION((aContext && aScopeObject) || aHandler.HasEventHandler(),
"Must have one or the other!");
nsresult rv = NS_OK;
uint32_t eventType = nsContentUtils::GetEventId(aName);
nsListenerStruct* ls = FindEventHandler(eventType, aName);
if (!ls) {
// If we didn't find a script listener or no listeners existed
// create and add a new one.
EventListenerFlags flags;
flags.mListenerIsJSListener = true;
nsCOMPtr<nsIJSEventListener> scriptListener;
rv = NS_NewJSEventListener(aContext, aScopeObject, mTarget, aName,
aHandler, getter_AddRefs(scriptListener));
if (NS_SUCCEEDED(rv)) {
EventListenerHolder holder(scriptListener);
AddEventListenerInternal(holder, eventType, aName, flags, true);
ls = FindEventHandler(eventType, aName);
}
} else {
nsIJSEventListener* scriptListener = ls->GetJSListener();
MOZ_ASSERT(scriptListener,
"How can we have an event handler with no nsIJSEventListener?");
bool same = scriptListener->GetHandler() == aHandler;
// Possibly the same listener, but update still the context and scope.
scriptListener->SetHandler(aHandler, aContext, aScopeObject);
if (mTarget && !same) {
mTarget->EventListenerRemoved(aName);
mTarget->EventListenerAdded(aName);
}
}
if (NS_SUCCEEDED(rv) && ls) {
// Set flag to indicate possible need for compilation later
ls->mHandlerIsString = !aHandler.HasEventHandler();
if (aPermitUntrustedEvents) {
ls->mFlags.mAllowUntrustedEvents = true;
}
*aListenerStruct = ls;
} else {
*aListenerStruct = nullptr;
}
return rv;
}
nsresult
nsEventListenerManager::SetEventHandlerInternal(nsIScriptContext *aContext,
JSObject* aScopeObject,
nsIAtom* aName,
const nsEventHandler& aHandler,
bool aPermitUntrustedEvents,
nsListenerStruct **aListenerStruct)
{
NS_ASSERTION((aContext && aScopeObject) || aHandler.HasEventHandler(),
"Must have one or the other!");
nsresult rv = NS_OK;
uint32_t eventType = nsContentUtils::GetEventId(aName);
nsListenerStruct* ls = FindEventHandler(eventType, aName);
if (!ls) {
// If we didn't find a script listener or no listeners existed
// create and add a new one.
const uint32_t flags = NS_EVENT_FLAG_BUBBLE | NS_PRIV_EVENT_FLAG_SCRIPT;
nsCOMPtr<nsIJSEventListener> scriptListener;
rv = NS_NewJSEventListener(aContext, aScopeObject, mTarget, aName,
aHandler, getter_AddRefs(scriptListener));
if (NS_SUCCEEDED(rv)) {
AddEventListener(scriptListener, eventType, aName, flags, true);
ls = FindEventHandler(eventType, aName);
}
} else {
nsIJSEventListener* scriptListener = ls->GetJSListener();
MOZ_ASSERT(scriptListener,
"How can we have an event handler with no nsIJSEventListener?");
scriptListener->SetHandler(aHandler, aContext, aScopeObject);
}
if (NS_SUCCEEDED(rv) && ls) {
// Set flag to indicate possible need for compilation later
ls->mHandlerIsString = !aHandler.HasEventHandler();
if (aPermitUntrustedEvents) {
ls->mFlags |= NS_PRIV_EVENT_UNTRUSTED_PERMITTED;
}
*aListenerStruct = ls;
} else {
*aListenerStruct = nullptr;
}
return rv;
}
