bool EventTarget::removeEventListener(const AtomicString& eventType, EventListener* listener, bool useCapture)
{
EventTargetData* d = eventTargetData();
if (!d)
return false;
EventListenerMap::iterator result = d->eventListenerMap.find(eventType);
if (result == d->eventListenerMap.end())
return false;
EventListenerVector* entry = result->second;
RegisteredEventListener registeredListener(listener, useCapture);
size_t index = entry->find(registeredListener);
if (index == notFound)
return false;
entry->remove(index);
if (entry->isEmpty()) {
delete entry;
d->eventListenerMap.remove(result);
}
// Notify firing events planning to invoke the listener at 'index' that
// they have one less listener to invoke.
for (size_t i = 0; i < d->firingEventIterators.size(); ++i) {
if (eventType != d->firingEventIterators[i].eventType)
continue;
if (index >= d->firingEventIterators[i].end)
continue;
--d->firingEventIterators[i].end;
if (index <= d->firingEventIterators[i].iterator)
--d->firingEventIterators[i].iterator;
}
return true;
}
