void
nsNodeUtils::LastRelease(nsINode* aNode)
{
nsINode::nsSlots* slots = aNode->GetExistingSlots();
if (slots) {
if (!slots->mMutationObservers.IsEmpty()) {
NS_OBSERVER_ARRAY_NOTIFY_OBSERVERS(slots->mMutationObservers,
nsIMutationObserver,
NodeWillBeDestroyed, (aNode));
}
delete slots;
aNode->mSlots = nullptr;
}
// Kill properties first since that may run external code, so we want to
// be in as complete state as possible at that time.
if (aNode->IsNodeOfType(nsINode::eDOCUMENT)) {
// Delete all properties before tearing down the document. Some of the
// properties are bound to nsINode objects and the destructor functions of
// the properties may want to use the owner document of the nsINode.
static_cast<nsIDocument*>(aNode)->DeleteAllProperties();
}
else {
if (aNode->HasProperties()) {
// Strong reference to the document so that deleting properties can't
// delete the document.
nsCOMPtr<nsIDocument> document = aNode->OwnerDoc();
document->DeleteAllPropertiesFor(aNode);
}
// I wonder whether it's faster to do the HasFlag check first....
if (aNode->IsNodeOfType(nsINode::eHTML_FORM_CONTROL) &&
aNode->HasFlag(ADDED_TO_FORM)) {
// Tell the form (if any) this node is going away. Don't
// notify, since we're being destroyed in any case.
static_cast<nsGenericHTMLFormElement*>(aNode)->ClearForm(true);
}
if (aNode->IsHTMLElement(nsGkAtoms::img) &&
aNode->HasFlag(ADDED_TO_FORM)) {
HTMLImageElement* imageElem = static_cast<HTMLImageElement*>(aNode);
imageElem->ClearForm(true);
}
}
aNode->UnsetFlags(NODE_HAS_PROPERTIES);
if (aNode->NodeType() != nsIDOMNode::DOCUMENT_NODE &&
aNode->HasFlag(NODE_HAS_LISTENERMANAGER)) {
#ifdef DEBUG
if (nsContentUtils::IsInitialized()) {
EventListenerManager* manager =
nsContentUtils::GetExistingListenerManagerForNode(aNode);
if (!manager) {
NS_ERROR("Huh, our bit says we have a listener manager list, "
"but there's nothing in the hash!?!!");
}
}
#endif
nsContentUtils::RemoveListenerManager(aNode);
aNode->UnsetFlags(NODE_HAS_LISTENERMANAGER);
}
if (aNode->IsElement()) {
nsIDocument* ownerDoc = aNode->OwnerDoc();
Element* elem = aNode->AsElement();
ownerDoc->ClearBoxObjectFor(elem);
NS_ASSERTION(aNode->HasFlag(NODE_FORCE_XBL_BINDINGS) ||
!elem->GetXBLBinding(),
"Non-forced node has binding on destruction");
// if NODE_FORCE_XBL_BINDINGS is set, the node might still have a binding
// attached
if (aNode->HasFlag(NODE_FORCE_XBL_BINDINGS) &&
ownerDoc->BindingManager()) {
ownerDoc->BindingManager()->RemovedFromDocument(elem, ownerDoc);
}
}
aNode->ReleaseWrapper(aNode);
FragmentOrElement::RemoveBlackMarkedNode(aNode);
}
