void CharacterData::dispatchModifiedEvent(StringImpl* oldData)
{
if (parentNode())
parentNode()->childrenChanged();
if (document()->hasListenerType(Document::DOMCHARACTERDATAMODIFIED_LISTENER))
dispatchEvent(MutationEvent::create(eventNames().DOMCharacterDataModifiedEvent, true, 0, oldData, m_data));
dispatchSubtreeModifiedEvent();
}
bool ContainerNode::removeChild(Node* oldChild, ExceptionCode& ec)
{
// Check that this node is not "floating".
// If it is, it can be deleted as a side effect of sending mutation events.
ASSERT(refCount() || parentOrShadowHostNode());
RefPtr<Node> protect(this);
ec = 0;
// NO_MODIFICATION_ALLOWED_ERR: Raised if this node is readonly.
if (isReadOnlyNode()) {
ec = NO_MODIFICATION_ALLOWED_ERR;
return false;
}
// NOT_FOUND_ERR: Raised if oldChild is not a child of this node.
if (!oldChild || oldChild->parentNode() != this) {
ec = NOT_FOUND_ERR;
return false;
}
RefPtr<Node> child = oldChild;
document().removeFocusedNodeOfSubtree(child.get());
#if ENABLE(FULLSCREEN_API)
document().removeFullScreenElementOfSubtree(child.get());
#endif
// Events fired when blurring currently focused node might have moved this
// child into a different parent.
if (child->parentNode() != this) {
ec = NOT_FOUND_ERR;
return false;
}
willRemoveChild(child.get());
// Mutation events might have moved this child into a different parent.
if (child->parentNode() != this) {
ec = NOT_FOUND_ERR;
return false;
}
{
WidgetHierarchyUpdatesSuspensionScope suspendWidgetHierarchyUpdates;
Node* prev = child->previousSibling();
Node* next = child->nextSibling();
removeBetween(prev, next, child.get());
childrenChanged(false, prev, next, -1);
ChildNodeRemovalNotifier(this).notify(child.get());
}
dispatchSubtreeModifiedEvent();
return child;
}
bool ContainerNode::appendChild(PassRefPtr<Node> newChild, ExceptionCode& ec, AttachBehavior attachBehavior)
{
RefPtr<ContainerNode> protect(this);
// Check that this node is not "floating".
// If it is, it can be deleted as a side effect of sending mutation events.
ASSERT(refCount() || parentOrShadowHostNode());
ec = 0;
// Make sure adding the new child is ok
if (!checkAddChild(this, newChild.get(), ec))
return false;
if (newChild == m_lastChild) // nothing to do
return newChild;
NodeVector targets;
collectChildrenAndRemoveFromOldParent(newChild.get(), targets, ec);
if (ec)
return false;
if (targets.isEmpty())
return true;
// We need this extra check because collectChildrenAndRemoveFromOldParent() can fire mutation events.
if (!checkAcceptChildGuaranteedNodeTypes(this, newChild.get(), ec))
return false;
InspectorInstrumentation::willInsertDOMNode(document(), this);
// Now actually add the child(ren)
ChildListMutationScope mutation(this);
for (NodeVector::const_iterator it = targets.begin(); it != targets.end(); ++it) {
Node* child = it->get();
// If the child has a parent again, just stop what we're doing, because
// that means someone is doing something with DOM mutation -- can't re-parent
// a child that already has a parent.
if (child->parentNode())
break;
treeScope()->adoptIfNeeded(child);
// Append child to the end of the list
{
NoEventDispatchAssertion assertNoEventDispatch;
appendChildToContainer(child, this);
}
updateTreeAfterInsertion(this, child, attachBehavior);
}
dispatchSubtreeModifiedEvent();
return true;
}
void CharacterData::dispatchModifiedEvent(StringImpl* prevValue)
{
if (parentNode())
parentNode()->childrenChanged();
if (document()->hasListenerType(Document::DOMCHARACTERDATAMODIFIED_LISTENER)) {
ExceptionCode ec;
dispatchEvent(MutationEvent::create(eventNames().DOMCharacterDataModifiedEvent, true, false, 0, prevValue, m_data, String(), 0), ec);
}
dispatchSubtreeModifiedEvent();
}
void CharacterData::dispatchModifiedEvent(const String& oldData)
{
if (OwnPtr<MutationObserverInterestGroup> mutationRecipients = MutationObserverInterestGroup::createForCharacterDataMutation(this))
mutationRecipients->enqueueMutationRecord(MutationRecord::createCharacterData(this, oldData));
if (!isInShadowTree()) {
if (parentNode())
parentNode()->childrenChanged();
if (document()->hasListenerType(Document::DOMCHARACTERDATAMODIFIED_LISTENER))
dispatchScopedEvent(MutationEvent::create(eventNames().DOMCharacterDataModifiedEvent, true, 0, oldData, m_data));
dispatchSubtreeModifiedEvent();
}
InspectorInstrumentation::characterDataModified(document(), this);
}
// 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();
}
// 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.
Ref<ContainerNode> protect(*this);
// exclude this node when looking for removed focusedNode since only children will be removed
document().removeFocusedNodeOfSubtree(this, true);
#if ENABLE(FULLSCREEN_API)
document().removeFullScreenElementOfSubtree(this, true);
#endif
// Do any prep work needed before actually starting to detach
// and remove... e.g. stop loading frames, fire unload events.
willRemoveChildren(*this);
NodeVector removedChildren;
{
WidgetHierarchyUpdatesSuspensionScope suspendWidgetHierarchyUpdates;
{
NoEventDispatchAssertion assertNoEventDispatch;
removedChildren.reserveInitialCapacity(countChildNodes());
while (RefPtr<Node> n = m_firstChild) {
removedChildren.append(*m_firstChild);
removeBetween(0, m_firstChild->nextSibling(), *m_firstChild);
}
}
ChildChange change = { AllChildrenRemoved, nullptr, nullptr, ChildChangeSourceAPI };
childrenChanged(change);
for (size_t i = 0; i < removedChildren.size(); ++i)
ChildNodeRemovalNotifier(*this).notify(removedChildren[i].get());
}
if (document().svgExtensions()) {
Element* shadowHost = this->shadowHost();
if (!shadowHost || !shadowHost->hasTagName(SVGNames::useTag))
document().accessSVGExtensions()->rebuildElements();
}
dispatchSubtreeModifiedEvent();
}
void CharacterData::dispatchModifiedEvent(StringImpl* oldData)
{
#if ENABLE(MUTATION_OBSERVERS)
Vector<WebKitMutationObserver*> observers;
registeredMutationObserversOfType(observers, WebKitMutationObserver::CharacterData);
if (!observers.isEmpty()) {
RefPtr<MutationRecord> mutation = MutationRecord::createCharacterData(this);
for (size_t i = 0; i < observers.size(); ++i)
observers[i]->enqueueMutationRecord(mutation);
}
#endif
if (parentNode())
parentNode()->childrenChanged();
if (document()->hasListenerType(Document::DOMCHARACTERDATAMODIFIED_LISTENER))
dispatchEvent(MutationEvent::create(eventNames().DOMCharacterDataModifiedEvent, true, 0, oldData, m_data));
dispatchSubtreeModifiedEvent();
#if ENABLE(INSPECTOR)
InspectorInstrumentation::characterDataModified(document(), this);
#endif
}
void CharacterData::didModifyData(const String& oldData, UpdateSource source)
{
if (OwnPtrWillBeRawPtr<MutationObserverInterestGroup> mutationRecipients = MutationObserverInterestGroup::createForCharacterDataMutation(*this))
mutationRecipients->enqueueMutationRecord(MutationRecord::createCharacterData(this, oldData));
if (parentNode()) {
ContainerNode::ChildrenChange change = {ContainerNode::TextChanged, previousSibling(), nextSibling(), ContainerNode::ChildrenChangeSourceAPI};
parentNode()->childrenChanged(change);
}
// Skip DOM mutation events if the modification is from parser.
// Note that mutation observer events will still fire.
// Spec: https://html.spec.whatwg.org/multipage/syntax.html#insert-a-character
if (source != UpdateFromParser && !isInShadowTree()) {
if (document().hasListenerType(Document::DOMCHARACTERDATAMODIFIED_LISTENER))
dispatchScopedEvent(MutationEvent::create(EventTypeNames::DOMCharacterDataModified, true, nullptr, oldData, m_data));
dispatchSubtreeModifiedEvent();
}
InspectorInstrumentation::characterDataModified(this);
}
void CharacterData::dispatchModifiedEvent(const String& oldData)
{
if (std::unique_ptr<MutationObserverInterestGroup> mutationRecipients = MutationObserverInterestGroup::createForCharacterDataMutation(*this))
mutationRecipients->enqueueMutationRecord(MutationRecord::createCharacterData(*this, oldData));
if (!isInShadowTree()) {
if (parentNode()) {
ContainerNode::ChildChange change = {
ContainerNode::TextChanged,
ElementTraversal::previousSibling(*this),
ElementTraversal::nextSibling(*this),
ContainerNode::ChildChangeSourceAPI
};
parentNode()->childrenChanged(change);
}
if (document().hasListenerType(Document::DOMCHARACTERDATAMODIFIED_LISTENER))
dispatchScopedEvent(MutationEvent::create(eventNames().DOMCharacterDataModifiedEvent, true, nullptr, oldData, m_data));
dispatchSubtreeModifiedEvent();
}
InspectorInstrumentation::characterDataModified(document(), *this);
}
// 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 removed focusedNode since only children will be removed
document().removeFocusedNodeOfSubtree(this, true);
#if ENABLE(FULLSCREEN_API)
document().removeFullScreenElementOfSubtree(this, true);
#endif
// Do any prep work needed before actually starting to detach
// and remove... e.g. stop loading frames, fire unload events.
willRemoveChildren(protect.get());
NodeVector removedChildren;
{
WidgetHierarchyUpdatesSuspensionScope suspendWidgetHierarchyUpdates;
{
NoEventDispatchAssertion assertNoEventDispatch;
removedChildren.reserveInitialCapacity(childNodeCount());
while (RefPtr<Node> n = m_firstChild) {
removedChildren.append(m_firstChild);
removeBetween(0, m_firstChild->nextSibling(), m_firstChild);
}
}
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();
}
bool ContainerNode::replaceChild(PassRefPtr<Node> newChild, Node* oldChild, ExceptionCode& ec, AttachBehavior attachBehavior)
{
// Check that this node is not "floating".
// If it is, it can be deleted as a side effect of sending mutation events.
ASSERT(refCount() || parentOrShadowHostNode());
RefPtr<Node> protect(this);
ec = 0;
if (oldChild == newChild) // nothing to do
return true;
if (!oldChild) {
ec = NOT_FOUND_ERR;
return false;
}
// Make sure replacing the old child with the new is ok
if (!checkReplaceChild(this, newChild.get(), oldChild, ec))
return false;
// NOT_FOUND_ERR: Raised if oldChild is not a child of this node.
if (oldChild->parentNode() != this) {
ec = NOT_FOUND_ERR;
return false;
}
ChildListMutationScope mutation(this);
RefPtr<Node> next = oldChild->nextSibling();
// Remove the node we're replacing
RefPtr<Node> removedChild = oldChild;
removeChild(oldChild, ec);
if (ec)
return false;
if (next && (next->previousSibling() == newChild || next == newChild)) // nothing to do
return true;
// Does this one more time because removeChild() fires a MutationEvent.
if (!checkReplaceChild(this, newChild.get(), oldChild, ec))
return false;
NodeVector targets;
collectChildrenAndRemoveFromOldParent(newChild.get(), targets, ec);
if (ec)
return false;
// Does this yet another check because collectChildrenAndRemoveFromOldParent() fires a MutationEvent.
if (!checkReplaceChild(this, newChild.get(), oldChild, ec))
return false;
InspectorInstrumentation::willInsertDOMNode(document(), this);
// Add the new child(ren)
for (NodeVector::const_iterator it = targets.begin(); it != targets.end(); ++it) {
Node* child = it->get();
// Due to arbitrary code running in response to a DOM mutation event it's
// possible that "next" is no longer a child of "this".
// It's also possible that "child" has been inserted elsewhere.
// In either of those cases, we'll just stop.
if (next && next->parentNode() != this)
break;
if (child->parentNode())
break;
treeScope()->adoptIfNeeded(child);
// Add child before "next".
{
NoEventDispatchAssertion assertNoEventDispatch;
if (next)
insertBeforeCommon(next.get(), child);
else
appendChildToContainer(child, this);
}
updateTreeAfterInsertion(this, child, attachBehavior);
}
dispatchSubtreeModifiedEvent();
return true;
}
bool ContainerNode::insertBefore(PassRefPtr<Node> newChild, Node* refChild, ExceptionCode& ec, AttachBehavior attachBehavior)
{
// Check that this node is not "floating".
// If it is, it can be deleted as a side effect of sending mutation events.
ASSERT(refCount() || parentOrShadowHostNode());
RefPtr<Node> protect(this);
ec = 0;
// insertBefore(node, 0) is equivalent to appendChild(node)
if (!refChild)
return appendChild(newChild, ec, attachBehavior);
// Make sure adding the new child is OK.
if (!checkAddChild(this, newChild.get(), ec))
return false;
// NOT_FOUND_ERR: Raised if refChild is not a child of this node
if (refChild->parentNode() != this) {
ec = NOT_FOUND_ERR;
return false;
}
if (refChild->previousSibling() == newChild || refChild == newChild) // nothing to do
return true;
RefPtr<Node> next = refChild;
NodeVector targets;
collectChildrenAndRemoveFromOldParent(newChild.get(), targets, ec);
if (ec)
return false;
if (targets.isEmpty())
return true;
// We need this extra check because collectChildrenAndRemoveFromOldParent() can fire mutation events.
if (!checkAcceptChildGuaranteedNodeTypes(this, newChild.get(), ec))
return false;
InspectorInstrumentation::willInsertDOMNode(document(), this);
ChildListMutationScope mutation(this);
for (NodeVector::const_iterator it = targets.begin(); it != targets.end(); ++it) {
Node* child = it->get();
// Due to arbitrary code running in response to a DOM mutation event it's
// possible that "next" is no longer a child of "this".
// It's also possible that "child" has been inserted elsewhere.
// In either of those cases, we'll just stop.
if (next->parentNode() != this)
break;
if (child->parentNode())
break;
treeScope()->adoptIfNeeded(child);
insertBeforeCommon(next.get(), child);
updateTreeAfterInsertion(this, child, attachBehavior);
}
dispatchSubtreeModifiedEvent();
return true;
}
// 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 removed focusedNode since only children will be removed
document()->removeFocusedNodeOfSubtree(this, true);
#if ENABLE(FULLSCREEN_API)
document()->removeFullScreenElementOfSubtree(this, true);
#endif
// Do any prep work needed before actually starting to detach
// and remove... e.g. stop loading frames, fire unload events.
willRemoveChildren(protect.get());
Vector<RefPtr<Node>, 10> removedChildren;
{
WidgetHierarchyUpdatesSuspensionScope suspendWidgetHierarchyUpdates;
NoEventDispatchAssertion assertNoEventDispatch;
removedChildren.reserveInitialCapacity(childNodeCount());
while (RefPtr<Node> n = m_firstChild) {
Node* next = n->nextSibling();
// Remove the node from the tree before calling detach or removedFromDocument (4427024, 4129744).
// removeChild() does this after calling detach(). There is no explanation for
// this discrepancy between removeChild() and its optimized version removeChildren().
n->setPreviousSibling(0);
n->setNextSibling(0);
n->setParentOrHostNode(0);
document()->adoptIfNeeded(n.get());
m_firstChild = next;
if (n == m_lastChild)
m_lastChild = 0;
removedChildren.append(n.release());
}
size_t removedChildrenCount = removedChildren.size();
size_t i;
// Detach the nodes only after properly removed from the tree because
// a. detaching requires a proper DOM tree (for counters and quotes for
// example) and during the previous loop the next sibling still points to
// the node being removed while the node being removed does not point back
// and does not point to the same parent as its next sibling.
// b. destroying Renderers of standalone nodes is sometimes faster.
for (i = 0; i < removedChildrenCount; ++i) {
Node* removedChild = removedChildren[i].get();
if (removedChild->attached())
removedChild->detach();
}
childrenChanged(false, 0, 0, -static_cast<int>(removedChildrenCount));
for (i = 0; i < removedChildrenCount; ++i)
ChildNodeRemovalNotifier(this).notify(removedChildren[i].get());
}
dispatchSubtreeModifiedEvent();
}
bool ContainerNode::removeChild(Node* oldChild, ExceptionCode& ec)
{
// Check that this node is not "floating".
// If it is, it can be deleted as a side effect of sending mutation events.
ASSERT(refCount() || parentOrShadowHostNode());
Ref<ContainerNode> protect(*this);
ec = 0;
// NO_MODIFICATION_ALLOWED_ERR: Raised if this node is readonly.
if (isReadOnlyNode()) {
ec = NO_MODIFICATION_ALLOWED_ERR;
return false;
}
// NOT_FOUND_ERR: Raised if oldChild is not a child of this node.
if (!oldChild || oldChild->parentNode() != this) {
ec = NOT_FOUND_ERR;
return false;
}
Ref<Node> child(*oldChild);
document().removeFocusedNodeOfSubtree(&child.get());
#if ENABLE(FULLSCREEN_API)
document().removeFullScreenElementOfSubtree(&child.get());
#endif
// Events fired when blurring currently focused node might have moved this
// child into a different parent.
if (child->parentNode() != this) {
ec = NOT_FOUND_ERR;
return false;
}
willRemoveChild(child.get());
// Mutation events might have moved this child into a different parent.
if (child->parentNode() != this) {
ec = NOT_FOUND_ERR;
return false;
}
{
WidgetHierarchyUpdatesSuspensionScope suspendWidgetHierarchyUpdates;
Node* prev = child->previousSibling();
Node* next = child->nextSibling();
removeBetween(prev, next, child.get());
notifyChildRemoved(child.get(), prev, next, ChildChangeSourceAPI);
ChildNodeRemovalNotifier(*this).notify(child.get());
}
if (document().svgExtensions()) {
Element* shadowHost = this->shadowHost();
if (!shadowHost || !shadowHost->hasTagName(SVGNames::useTag))
document().accessSVGExtensions()->rebuildElements();
}
dispatchSubtreeModifiedEvent();
return true;
}