void EventListenerInfo::getEventListeners(EventTarget* target, WillBeHeapVector<EventListenerInfo>& eventInformation, bool includeAncestors)
{
// The Node's Ancestors including self.
WillBeHeapVector<RawPtrWillBeMember<EventTarget>> ancestors;
ancestors.append(target);
if (includeAncestors) {
Node* node = target->toNode();
for (ContainerNode* ancestor = node ? node->parentOrShadowHostNode() : nullptr; ancestor; ancestor = ancestor->parentOrShadowHostNode())
ancestors.append(ancestor);
}
// Nodes and their Listeners for the concerned event types (order is top to bottom)
for (size_t i = ancestors.size(); i; --i) {
EventTarget* ancestor = ancestors[i - 1];
Vector<AtomicString> eventTypes = ancestor->eventTypes();
for (size_t j = 0; j < eventTypes.size(); ++j) {
AtomicString& type = eventTypes[j];
EventListenerVector* listeners = ancestor->getEventListeners(type);
if (!listeners)
continue;
EventListenerVector filteredListeners;
filteredListeners.reserveCapacity(listeners->size());
for (size_t k = 0; k < listeners->size(); ++k) {
if (listeners->at(k).listener->type() == EventListener::JSEventListenerType)
filteredListeners.append(listeners->at(k));
}
if (!filteredListeners.isEmpty())
eventInformation.append(EventListenerInfo(ancestor, type, filteredListeners));
}
}
}
