static void willRemoveChildren(ContainerNode* container)
{
NodeVector children;
getChildNodes(container, children);
container->document()->nodeChildrenWillBeRemoved(container);
#if ENABLE(MUTATION_OBSERVERS)
ChildListMutationScope mutation(container);
#endif
for (NodeVector::const_iterator it = children.begin(); it != children.end(); it++) {
Node* child = it->get();
#if ENABLE(MUTATION_OBSERVERS)
mutation.willRemoveChild(child);
child->notifyMutationObserversNodeWillDetach();
#endif
#if ENABLE(UNDO_MANAGER)
if (UndoManager::isRecordingAutomaticTransaction(container))
UndoManager::addTransactionStep(NodeRemovingDOMTransactionStep::create(container, child));
#endif
// fire removed from document mutation events.
dispatchChildRemovalEvents(child);
}
ChildFrameDisconnector(container, ChildFrameDisconnector::DoNotIncludeRoot).disconnect();
}
static void willRemoveChild(Node* child)
{
ASSERT(child->parentNode());
ChildListMutationScope(child->parentNode()).willRemoveChild(child);
child->notifyMutationObserversNodeWillDetach();
dispatchChildRemovalEvents(child);
child->document()->nodeWillBeRemoved(child); // e.g. mutation event listener can create a new range.
ChildFrameDisconnector(child).disconnect();
}
// this differs from other remove functions because it forcibly removes all the children,
// regardless of read-only status or event exceptions, e.g.
void ContainerNode::removeChildren()
{
if (!m_firstChild)
return;
// The container node can be removed from event handlers.
RefPtr<ContainerNode> protect(this);
// Exclude this node when looking for the focused or full screen Node since
// only children will be removed.
// FIXME: We should call these inside the loop below. Right now you can focus
// a node with mutation events and it'll never get blured.
document()->removeFocusedNodeOfSubtree(this, true);
document()->removeFullScreenElementOfSubtree(this, true);
ChildListMutationScope mutation(this);
NodeVector removedChildren;
{
WidgetHierarchyUpdatesSuspensionScope suspendWidgetHierarchyUpdates;
while (RefPtr<Node> child = m_firstChild) {
// Dispatch synchronous events like mutation and unload events.
dispatchChildRemovalEvents(child.get());
ChildFrameDisconnector(child.get()).disconnect();
// FIXME: In theory this can fire focus events when the selection
// changes, but there's no obvious way to test it.
document()->nodeWillBeRemoved(child.get());
// If an event moved the child start over.
if (child != m_firstChild)
continue;
mutation.willRemoveChild(child.get());
child->notifyMutationObserversNodeWillDetach();
removeBetween(0, child->nextSibling(), child.get());
removedChildren.append(child.release());
}
// FIXME: We could avoid walking all the children twice by calling
// notify inside the loop and childrenChanged after but that would mean
// calling childrenChanged in a different order than all other methods.
// Figure out if this is safe.
childrenChanged(false, 0, 0, -static_cast<int>(removedChildren.size()));
for (size_t i = 0; i < removedChildren.size(); ++i)
ChildNodeRemovalNotifier(this).notify(removedChildren[i].get());
}
dispatchSubtreeModifiedEvent();
}
static void willRemoveChild(Node* child)
{
#if ENABLE(MUTATION_OBSERVERS)
ASSERT(child->parentNode());
ChildListMutationScope(child->parentNode()).willRemoveChild(child);
child->notifyMutationObserversNodeWillDetach();
#endif
#if ENABLE(UNDO_MANAGER)
if (UndoManager::isRecordingAutomaticTransaction(child->parentNode()))
UndoManager::addTransactionStep(NodeRemovingDOMTransactionStep::create(child->parentNode(), child));
#endif
dispatchChildRemovalEvents(child);
child->document()->nodeWillBeRemoved(child); // e.g. mutation event listener can create a new range.
ChildFrameDisconnector(child).disconnect();
}
static void willRemoveChildren(ContainerNode* container)
{
NodeVector children;
getChildNodes(container, children);
container->document()->nodeChildrenWillBeRemoved(container);
ChildListMutationScope mutation(container);
for (NodeVector::const_iterator it = children.begin(); it != children.end(); it++) {
Node* child = it->get();
mutation.willRemoveChild(child);
child->notifyMutationObserversNodeWillDetach();
// fire removed from document mutation events.
dispatchChildRemovalEvents(child);
}
ChildFrameDisconnector(container).disconnect(ChildFrameDisconnector::DescendantsOnly);
}
void ContainerNode::disconnectDescendantFrames()
{
ChildFrameDisconnector(this).disconnect();
}
