NS_IMETHODIMP
EventListenerService::RemoveSystemEventListener(EventTarget *aTarget,
const nsAString& aType,
JS::Handle<JS::Value> aListener,
bool aUseCapture,
JSContext* aCx)
{
MOZ_ASSERT(aTarget, "Missing target");
NS_ENSURE_TRUE(aTarget, NS_ERROR_UNEXPECTED);
RefPtr<EventListener> listener = ToEventListener(aCx, aListener);
if (!listener) {
return NS_ERROR_UNEXPECTED;
}
EventListenerManager* manager = aTarget->GetExistingListenerManager();
if (manager) {
EventListenerFlags flags =
aUseCapture ? TrustedEventsAtSystemGroupCapture() :
TrustedEventsAtSystemGroupBubble();
manager->RemoveEventListenerByType(listener, aType, flags);
}
return NS_OK;
}
NS_IMETHODIMP
EventListenerService::AddSystemEventListener(nsIDOMEventTarget *aTarget,
const nsAString& aType,
nsIDOMEventListener* aListener,
bool aUseCapture)
{
NS_PRECONDITION(aTarget, "Missing target");
NS_PRECONDITION(aListener, "Missing listener");
nsCOMPtr<EventTarget> eventTarget = do_QueryInterface(aTarget);
NS_ENSURE_TRUE(eventTarget, NS_ERROR_NO_INTERFACE);
EventListenerManager* manager = eventTarget->GetOrCreateListenerManager();
NS_ENSURE_STATE(manager);
EventListenerFlags flags =
aUseCapture ? TrustedEventsAtSystemGroupCapture() :
TrustedEventsAtSystemGroupBubble();
manager->AddEventListenerByType(aListener, aType, flags);
return NS_OK;
}