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[DOM events] Clear event listener.

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This commit is contained in:
Peter Van der Beken 2022-02-10 14:14:18 +00:00 • committed by roytam1
commit b8125dbafd
1 changed files with 4 additions and 0 deletions
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4
dom/events/EventListenerManager.cpp
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@ -751,6 +751,8 @@ EventListenerManager::SetEventHandler(nsIAtom* aName,
bool aPermitUntrustedEvents,
Element* aElement)
{
auto removeEventHandler = MakeScopeExit([&] { RemoveEventHandler(aName, EmptyString()); });
nsCOMPtr<nsIDocument> doc;
nsCOMPtr<nsIScriptGlobalObject> global =
GetScriptGlobalAndDocument(getter_AddRefs(doc));
@ -825,6 +827,8 @@ EventListenerManager::SetEventHandler(nsIAtom* aName,
NS_ENSURE_TRUE(context, NS_ERROR_FAILURE);
NS_ENSURE_STATE(global->GetGlobalJSObject());
removeEventHandler.release();
Listener* listener = SetEventHandlerInternal(aName,
EmptyString(),
TypedEventHandler(),