зеркало из https://github.com/mozilla/gecko-dev.git
693 строки
26 KiB
C++
693 строки
26 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
|
||
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
|
||
/* This Source Code Form is subject to the terms of the Mozilla Public
|
||
* License, v. 2.0. If a copy of the MPL was not distributed with this
|
||
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
|
||
|
||
#include "nsNodeUtils.h"
|
||
#include "nsContentUtils.h"
|
||
#include "nsCSSPseudoElements.h"
|
||
#include "nsINode.h"
|
||
#include "nsIContent.h"
|
||
#include "nsIContentInlines.h"
|
||
#include "mozilla/dom/Element.h"
|
||
#include "nsIMutationObserver.h"
|
||
#include "nsIDocument.h"
|
||
#include "mozilla/EventListenerManager.h"
|
||
#include "nsIXPConnect.h"
|
||
#include "PLDHashTable.h"
|
||
#include "nsCOMArray.h"
|
||
#include "nsPIDOMWindow.h"
|
||
#include "nsDocument.h"
|
||
#ifdef MOZ_XUL
|
||
#include "nsXULElement.h"
|
||
#endif
|
||
#include "nsBindingManager.h"
|
||
#include "nsGenericHTMLElement.h"
|
||
#include "mozilla/AnimationTarget.h"
|
||
#include "mozilla/Assertions.h"
|
||
#include "mozilla/ErrorResult.h"
|
||
#include "mozilla/dom/Animation.h"
|
||
#include "mozilla/dom/HTMLImageElement.h"
|
||
#include "mozilla/dom/HTMLMediaElement.h"
|
||
#include "mozilla/dom/KeyframeEffect.h"
|
||
#include "nsWrapperCacheInlines.h"
|
||
#include "nsObjectLoadingContent.h"
|
||
#include "nsDOMMutationObserver.h"
|
||
#include "mozilla/dom/BindingUtils.h"
|
||
#include "mozilla/dom/HTMLTemplateElement.h"
|
||
#include "mozilla/dom/ShadowRoot.h"
|
||
|
||
using namespace mozilla;
|
||
using namespace mozilla::dom;
|
||
using mozilla::AutoJSContext;
|
||
|
||
enum class IsRemoveNotification
|
||
{
|
||
Yes,
|
||
No,
|
||
};
|
||
|
||
#ifdef DEBUG
|
||
#define COMPOSED_DOC_DECL \
|
||
const bool wasInComposedDoc = !!node->GetComposedDoc();
|
||
#else
|
||
#define COMPOSED_DOC_DECL
|
||
#endif
|
||
|
||
// This macro expects the ownerDocument of content_ to be in scope as
|
||
// |nsIDocument* doc|
|
||
#define IMPL_MUTATION_NOTIFICATION(func_, content_, params_, remove_) \
|
||
PR_BEGIN_MACRO \
|
||
bool needsEnterLeave = doc->MayHaveDOMMutationObservers(); \
|
||
if (needsEnterLeave) { \
|
||
nsDOMMutationObserver::EnterMutationHandling(); \
|
||
} \
|
||
nsINode* node = content_; \
|
||
COMPOSED_DOC_DECL \
|
||
NS_ASSERTION(node->OwnerDoc() == doc, "Bogus document"); \
|
||
if (remove_ == IsRemoveNotification::Yes && node->GetComposedDoc()) { \
|
||
if (nsIPresShell* shell = doc->GetObservingShell()) { \
|
||
shell->func_ params_; \
|
||
} \
|
||
} \
|
||
doc->BindingManager()->func_ params_; \
|
||
nsINode* last; \
|
||
do { \
|
||
nsINode::nsSlots* slots = node->GetExistingSlots(); \
|
||
if (slots && !slots->mMutationObservers.IsEmpty()) { \
|
||
NS_OBSERVER_AUTO_ARRAY_NOTIFY_OBSERVERS( \
|
||
slots->mMutationObservers, nsIMutationObserver, 1, \
|
||
func_, params_); \
|
||
} \
|
||
last = node; \
|
||
if (ShadowRoot* shadow = ShadowRoot::FromNode(node)) { \
|
||
node = shadow->GetHost(); \
|
||
} else { \
|
||
node = node->GetParentNode(); \
|
||
} \
|
||
} while (node); \
|
||
/* Whitelist NativeAnonymousChildListChange removal notifications from \
|
||
* the assertion since it runs from UnbindFromTree, and thus we don't \
|
||
* reach the document, but doesn't matter. */ \
|
||
MOZ_ASSERT((last == doc) == wasInComposedDoc || \
|
||
(remove_ == IsRemoveNotification::Yes && \
|
||
!strcmp(#func_, "NativeAnonymousChildListChange"))); \
|
||
if (remove_ == IsRemoveNotification::No && last == doc) { \
|
||
if (nsIPresShell* shell = doc->GetObservingShell()) { \
|
||
shell->func_ params_; \
|
||
} \
|
||
} \
|
||
if (needsEnterLeave) { \
|
||
nsDOMMutationObserver::LeaveMutationHandling(); \
|
||
} \
|
||
PR_END_MACRO
|
||
|
||
#define IMPL_ANIMATION_NOTIFICATION(func_, content_, params_) \
|
||
PR_BEGIN_MACRO \
|
||
bool needsEnterLeave = doc->MayHaveDOMMutationObservers(); \
|
||
if (needsEnterLeave) { \
|
||
nsDOMMutationObserver::EnterMutationHandling(); \
|
||
} \
|
||
nsINode* node = content_; \
|
||
do { \
|
||
nsINode::nsSlots* slots = node->GetExistingSlots(); \
|
||
if (slots && !slots->mMutationObservers.IsEmpty()) { \
|
||
NS_OBSERVER_AUTO_ARRAY_NOTIFY_OBSERVERS_WITH_QI( \
|
||
slots->mMutationObservers, nsIMutationObserver, 1, \
|
||
nsIAnimationObserver, func_, params_); \
|
||
} \
|
||
if (ShadowRoot* shadow = ShadowRoot::FromNode(node)) { \
|
||
node = shadow->GetHost(); \
|
||
} else { \
|
||
node = node->GetParentNode(); \
|
||
} \
|
||
} while (node); \
|
||
if (needsEnterLeave) { \
|
||
nsDOMMutationObserver::LeaveMutationHandling(); \
|
||
} \
|
||
PR_END_MACRO
|
||
|
||
void
|
||
nsNodeUtils::CharacterDataWillChange(nsIContent* aContent,
|
||
const CharacterDataChangeInfo& aInfo)
|
||
{
|
||
nsIDocument* doc = aContent->OwnerDoc();
|
||
IMPL_MUTATION_NOTIFICATION(CharacterDataWillChange, aContent,
|
||
(aContent, aInfo), IsRemoveNotification::No);
|
||
}
|
||
|
||
void
|
||
nsNodeUtils::CharacterDataChanged(nsIContent* aContent,
|
||
const CharacterDataChangeInfo& aInfo)
|
||
{
|
||
nsIDocument* doc = aContent->OwnerDoc();
|
||
IMPL_MUTATION_NOTIFICATION(CharacterDataChanged, aContent,
|
||
(aContent, aInfo), IsRemoveNotification::No);
|
||
}
|
||
|
||
void
|
||
nsNodeUtils::AttributeWillChange(Element* aElement,
|
||
int32_t aNameSpaceID,
|
||
nsAtom* aAttribute,
|
||
int32_t aModType,
|
||
const nsAttrValue* aNewValue)
|
||
{
|
||
nsIDocument* doc = aElement->OwnerDoc();
|
||
IMPL_MUTATION_NOTIFICATION(AttributeWillChange, aElement,
|
||
(aElement, aNameSpaceID, aAttribute,
|
||
aModType, aNewValue), IsRemoveNotification::No);
|
||
}
|
||
|
||
void
|
||
nsNodeUtils::AttributeChanged(Element* aElement,
|
||
int32_t aNameSpaceID,
|
||
nsAtom* aAttribute,
|
||
int32_t aModType,
|
||
const nsAttrValue* aOldValue)
|
||
{
|
||
nsIDocument* doc = aElement->OwnerDoc();
|
||
IMPL_MUTATION_NOTIFICATION(AttributeChanged, aElement,
|
||
(aElement, aNameSpaceID, aAttribute,
|
||
aModType, aOldValue), IsRemoveNotification::No);
|
||
}
|
||
|
||
void
|
||
nsNodeUtils::AttributeSetToCurrentValue(Element* aElement,
|
||
int32_t aNameSpaceID,
|
||
nsAtom* aAttribute)
|
||
{
|
||
nsIDocument* doc = aElement->OwnerDoc();
|
||
IMPL_MUTATION_NOTIFICATION(AttributeSetToCurrentValue, aElement,
|
||
(aElement, aNameSpaceID, aAttribute),
|
||
IsRemoveNotification::No);
|
||
}
|
||
|
||
void
|
||
nsNodeUtils::ContentAppended(nsIContent* aContainer,
|
||
nsIContent* aFirstNewContent)
|
||
{
|
||
nsIDocument* doc = aContainer->OwnerDoc();
|
||
|
||
IMPL_MUTATION_NOTIFICATION(ContentAppended, aContainer,
|
||
(aFirstNewContent),
|
||
IsRemoveNotification::No);
|
||
}
|
||
|
||
void
|
||
nsNodeUtils::NativeAnonymousChildListChange(nsIContent* aContent,
|
||
bool aIsRemove)
|
||
{
|
||
nsIDocument* doc = aContent->OwnerDoc();
|
||
auto isRemove = aIsRemove
|
||
? IsRemoveNotification::Yes : IsRemoveNotification::No;
|
||
IMPL_MUTATION_NOTIFICATION(NativeAnonymousChildListChange, aContent,
|
||
(aContent, aIsRemove),
|
||
isRemove);
|
||
}
|
||
|
||
void
|
||
nsNodeUtils::ContentInserted(nsINode* aContainer,
|
||
nsIContent* aChild)
|
||
{
|
||
MOZ_ASSERT(aContainer->IsContent() || aContainer->IsDocument(),
|
||
"container must be an nsIContent or an nsIDocument");
|
||
nsIDocument* doc = aContainer->OwnerDoc();
|
||
IMPL_MUTATION_NOTIFICATION(ContentInserted, aContainer, (aChild),
|
||
IsRemoveNotification::No);
|
||
}
|
||
|
||
void
|
||
nsNodeUtils::ContentRemoved(nsINode* aContainer,
|
||
nsIContent* aChild,
|
||
nsIContent* aPreviousSibling)
|
||
{
|
||
MOZ_ASSERT(aContainer->IsContent() || aContainer->IsDocument(),
|
||
"container must be an nsIContent or an nsIDocument");
|
||
nsIDocument* doc = aContainer->OwnerDoc();
|
||
MOZ_ASSERT(aChild->GetParentNode() == aContainer,
|
||
"We expect the parent link to be still around at this point");
|
||
IMPL_MUTATION_NOTIFICATION(ContentRemoved, aContainer,
|
||
(aChild, aPreviousSibling),
|
||
IsRemoveNotification::Yes);
|
||
}
|
||
|
||
Maybe<NonOwningAnimationTarget>
|
||
nsNodeUtils::GetTargetForAnimation(const Animation* aAnimation)
|
||
{
|
||
AnimationEffect* effect = aAnimation->GetEffect();
|
||
if (!effect || !effect->AsKeyframeEffect()) {
|
||
return Nothing();
|
||
}
|
||
return effect->AsKeyframeEffect()->GetTarget();
|
||
}
|
||
|
||
void
|
||
nsNodeUtils::AnimationMutated(Animation* aAnimation,
|
||
AnimationMutationType aMutatedType)
|
||
{
|
||
Maybe<NonOwningAnimationTarget> target = GetTargetForAnimation(aAnimation);
|
||
if (!target) {
|
||
return;
|
||
}
|
||
|
||
// A pseudo element and its parent element use the same owner doc.
|
||
nsIDocument* doc = target->mElement->OwnerDoc();
|
||
if (doc->MayHaveAnimationObservers()) {
|
||
// we use the its parent element as the subject in DOM Mutation Observer.
|
||
Element* elem = target->mElement;
|
||
switch (aMutatedType) {
|
||
case AnimationMutationType::Added:
|
||
IMPL_ANIMATION_NOTIFICATION(AnimationAdded, elem, (aAnimation));
|
||
break;
|
||
case AnimationMutationType::Changed:
|
||
IMPL_ANIMATION_NOTIFICATION(AnimationChanged, elem, (aAnimation));
|
||
break;
|
||
case AnimationMutationType::Removed:
|
||
IMPL_ANIMATION_NOTIFICATION(AnimationRemoved, elem, (aAnimation));
|
||
break;
|
||
default:
|
||
MOZ_ASSERT_UNREACHABLE("unexpected mutation type");
|
||
}
|
||
}
|
||
}
|
||
|
||
void
|
||
nsNodeUtils::AnimationAdded(Animation* aAnimation)
|
||
{
|
||
AnimationMutated(aAnimation, AnimationMutationType::Added);
|
||
}
|
||
|
||
void
|
||
nsNodeUtils::AnimationChanged(Animation* aAnimation)
|
||
{
|
||
AnimationMutated(aAnimation, AnimationMutationType::Changed);
|
||
}
|
||
|
||
void
|
||
nsNodeUtils::AnimationRemoved(Animation* aAnimation)
|
||
{
|
||
AnimationMutated(aAnimation, AnimationMutationType::Removed);
|
||
}
|
||
|
||
void
|
||
nsNodeUtils::LastRelease(nsINode* aNode)
|
||
{
|
||
nsINode::nsSlots* slots = aNode->GetExistingSlots();
|
||
if (slots) {
|
||
if (!slots->mMutationObservers.IsEmpty()) {
|
||
NS_OBSERVER_AUTO_ARRAY_NOTIFY_OBSERVERS(slots->mMutationObservers,
|
||
nsIMutationObserver, 1,
|
||
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->IsDocument()) {
|
||
// 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.
|
||
aNode->AsDocument()->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, 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() != nsINode::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 (Element* element = Element::FromNode(aNode)) {
|
||
element->OwnerDoc()->ClearBoxObjectFor(element);
|
||
NS_ASSERTION(!element->GetXBLBinding(), "Node has binding on destruction");
|
||
}
|
||
|
||
aNode->ReleaseWrapper(aNode);
|
||
|
||
FragmentOrElement::RemoveBlackMarkedNode(aNode);
|
||
}
|
||
|
||
/* static */
|
||
already_AddRefed<nsINode>
|
||
nsNodeUtils::CloneNodeImpl(nsINode *aNode, bool aDeep, ErrorResult& aError)
|
||
{
|
||
return Clone(aNode, aDeep, nullptr, nullptr, aError);
|
||
}
|
||
|
||
/* static */
|
||
already_AddRefed<nsINode>
|
||
nsNodeUtils::CloneAndAdopt(nsINode *aNode, bool aClone, bool aDeep,
|
||
nsNodeInfoManager *aNewNodeInfoManager,
|
||
JS::Handle<JSObject*> aReparentScope,
|
||
nsCOMArray<nsINode> *aNodesWithProperties,
|
||
nsINode* aParent, ErrorResult& aError)
|
||
{
|
||
MOZ_ASSERT((!aClone && aNewNodeInfoManager) || !aReparentScope,
|
||
"If cloning or not getting a new nodeinfo we shouldn't rewrap");
|
||
MOZ_ASSERT(!aParent || aNode->IsContent(),
|
||
"Can't insert document or attribute nodes into a parent");
|
||
|
||
// First deal with aNode and walk its attributes (and their children). Then,
|
||
// if aDeep is true, deal with aNode's children (and recurse into their
|
||
// attributes and children).
|
||
|
||
nsAutoScriptBlocker scriptBlocker;
|
||
|
||
nsNodeInfoManager *nodeInfoManager = aNewNodeInfoManager;
|
||
|
||
// aNode.
|
||
NodeInfo *nodeInfo = aNode->mNodeInfo;
|
||
RefPtr<NodeInfo> newNodeInfo;
|
||
if (nodeInfoManager) {
|
||
|
||
// Don't allow importing/adopting nodes from non-privileged "scriptable"
|
||
// documents to "non-scriptable" documents.
|
||
nsIDocument* newDoc = nodeInfoManager->GetDocument();
|
||
if (NS_WARN_IF(!newDoc)) {
|
||
aError.Throw(NS_ERROR_UNEXPECTED);
|
||
return nullptr;
|
||
}
|
||
bool hasHadScriptHandlingObject = false;
|
||
if (!newDoc->GetScriptHandlingObject(hasHadScriptHandlingObject) &&
|
||
!hasHadScriptHandlingObject) {
|
||
nsIDocument* currentDoc = aNode->OwnerDoc();
|
||
if (NS_WARN_IF(!nsContentUtils::IsChromeDoc(currentDoc) &&
|
||
(currentDoc->GetScriptHandlingObject(hasHadScriptHandlingObject) ||
|
||
hasHadScriptHandlingObject))) {
|
||
aError.Throw(NS_ERROR_UNEXPECTED);
|
||
return nullptr;
|
||
}
|
||
}
|
||
|
||
newNodeInfo = nodeInfoManager->GetNodeInfo(nodeInfo->NameAtom(),
|
||
nodeInfo->GetPrefixAtom(),
|
||
nodeInfo->NamespaceID(),
|
||
nodeInfo->NodeType(),
|
||
nodeInfo->GetExtraName());
|
||
|
||
nodeInfo = newNodeInfo;
|
||
}
|
||
|
||
Element* elem = Element::FromNode(aNode);
|
||
|
||
nsCOMPtr<nsINode> clone;
|
||
if (aClone) {
|
||
nsresult rv = aNode->Clone(nodeInfo, getter_AddRefs(clone), aDeep);
|
||
if (NS_WARN_IF(NS_FAILED(rv))) {
|
||
aError.Throw(rv);
|
||
return nullptr;
|
||
}
|
||
|
||
if (CustomElementRegistry::IsCustomElementEnabled(nodeInfo->GetDocument()) &&
|
||
(clone->IsHTMLElement() || clone->IsXULElement())) {
|
||
// The cloned node may be a custom element that may require
|
||
// enqueing upgrade reaction.
|
||
Element* cloneElem = clone->AsElement();
|
||
CustomElementData* data = elem->GetCustomElementData();
|
||
RefPtr<nsAtom> typeAtom = data ? data->GetCustomElementType() : nullptr;
|
||
|
||
if (typeAtom) {
|
||
cloneElem->SetCustomElementData(new CustomElementData(typeAtom));
|
||
|
||
MOZ_ASSERT(nodeInfo->NameAtom()->Equals(nodeInfo->LocalName()));
|
||
CustomElementDefinition* definition =
|
||
nsContentUtils::LookupCustomElementDefinition(nodeInfo->GetDocument(),
|
||
nodeInfo->NameAtom(),
|
||
nodeInfo->NamespaceID(),
|
||
typeAtom);
|
||
if (definition) {
|
||
nsContentUtils::EnqueueUpgradeReaction(cloneElem, definition);
|
||
}
|
||
}
|
||
}
|
||
|
||
if (aParent) {
|
||
// If we're cloning we need to insert the cloned children into the cloned
|
||
// parent.
|
||
rv = aParent->AppendChildTo(static_cast<nsIContent*>(clone.get()),
|
||
false);
|
||
if (NS_WARN_IF(NS_FAILED(rv))) {
|
||
aError.Throw(rv);
|
||
return nullptr;
|
||
}
|
||
}
|
||
else if (aDeep && clone->IsDocument()) {
|
||
// After cloning the document itself, we want to clone the children into
|
||
// the cloned document (somewhat like cloning and importing them into the
|
||
// cloned document).
|
||
nodeInfoManager = clone->mNodeInfo->NodeInfoManager();
|
||
}
|
||
}
|
||
else if (nodeInfoManager) {
|
||
nsIDocument* oldDoc = aNode->OwnerDoc();
|
||
bool wasRegistered = false;
|
||
if (elem) {
|
||
oldDoc->ClearBoxObjectFor(elem);
|
||
wasRegistered = oldDoc->UnregisterActivityObserver(elem);
|
||
}
|
||
|
||
aNode->mNodeInfo.swap(newNodeInfo);
|
||
if (elem) {
|
||
elem->NodeInfoChanged(oldDoc);
|
||
}
|
||
|
||
nsIDocument* newDoc = aNode->OwnerDoc();
|
||
if (newDoc) {
|
||
if (elem && CustomElementRegistry::IsCustomElementEnabled(newDoc)) {
|
||
// Adopted callback must be enqueued whenever a node’s
|
||
// shadow-including inclusive descendants that is custom.
|
||
CustomElementData* data = elem->GetCustomElementData();
|
||
if (data && data->mState == CustomElementData::State::eCustom) {
|
||
LifecycleAdoptedCallbackArgs args = {
|
||
oldDoc,
|
||
newDoc
|
||
};
|
||
nsContentUtils::EnqueueLifecycleCallback(nsIDocument::eAdopted,
|
||
elem, nullptr, &args);
|
||
}
|
||
}
|
||
|
||
// XXX what if oldDoc is null, we don't know if this should be
|
||
// registered or not! Can that really happen?
|
||
if (wasRegistered) {
|
||
newDoc->RegisterActivityObserver(aNode->AsElement());
|
||
}
|
||
|
||
if (nsPIDOMWindowInner* window = newDoc->GetInnerWindow()) {
|
||
EventListenerManager* elm = aNode->GetExistingListenerManager();
|
||
if (elm) {
|
||
window->SetMutationListeners(elm->MutationListenerBits());
|
||
if (elm->MayHavePaintEventListener()) {
|
||
window->SetHasPaintEventListeners();
|
||
}
|
||
if (elm->MayHaveTouchEventListener()) {
|
||
window->SetHasTouchEventListeners();
|
||
}
|
||
if (elm->MayHaveMouseEnterLeaveEventListener()) {
|
||
window->SetHasMouseEnterLeaveEventListeners();
|
||
}
|
||
if (elm->MayHavePointerEnterLeaveEventListener()) {
|
||
window->SetHasPointerEnterLeaveEventListeners();
|
||
}
|
||
if (elm->MayHaveSelectionChangeEventListener()) {
|
||
window->SetHasSelectionChangeEventListeners();
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
if (wasRegistered && oldDoc != newDoc) {
|
||
nsIContent* content = aNode->AsContent();
|
||
if (auto mediaElem = HTMLMediaElement::FromNodeOrNull(content)) {
|
||
mediaElem->NotifyOwnerDocumentActivityChanged();
|
||
}
|
||
nsCOMPtr<nsIObjectLoadingContent> objectLoadingContent(do_QueryInterface(aNode));
|
||
if (objectLoadingContent) {
|
||
nsObjectLoadingContent* olc = static_cast<nsObjectLoadingContent*>(objectLoadingContent.get());
|
||
olc->NotifyOwnerDocumentActivityChanged();
|
||
}
|
||
}
|
||
|
||
if (oldDoc != newDoc && oldDoc->MayHaveDOMMutationObservers()) {
|
||
newDoc->SetMayHaveDOMMutationObservers();
|
||
}
|
||
|
||
if (oldDoc != newDoc && oldDoc->MayHaveAnimationObservers()) {
|
||
newDoc->SetMayHaveAnimationObservers();
|
||
}
|
||
|
||
if (elem) {
|
||
elem->RecompileScriptEventListeners();
|
||
}
|
||
|
||
if (aReparentScope) {
|
||
AutoJSContext cx;
|
||
JS::Rooted<JSObject*> wrapper(cx);
|
||
if ((wrapper = aNode->GetWrapper())) {
|
||
MOZ_ASSERT(IsDOMObject(wrapper));
|
||
JSAutoRealm ar(cx, wrapper);
|
||
ReparentWrapper(cx, wrapper, aError);
|
||
if (aError.Failed()) {
|
||
if (wasRegistered) {
|
||
aNode->OwnerDoc()->UnregisterActivityObserver(aNode->AsElement());
|
||
}
|
||
aNode->mNodeInfo.swap(newNodeInfo);
|
||
if (elem) {
|
||
elem->NodeInfoChanged(newDoc);
|
||
}
|
||
if (wasRegistered) {
|
||
aNode->OwnerDoc()->RegisterActivityObserver(aNode->AsElement());
|
||
}
|
||
return nullptr;
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
if (aNodesWithProperties && aNode->HasProperties()) {
|
||
bool ok = aNodesWithProperties->AppendObject(aNode);
|
||
MOZ_RELEASE_ASSERT(ok, "Out of memory");
|
||
if (aClone) {
|
||
ok = aNodesWithProperties->AppendObject(clone);
|
||
MOZ_RELEASE_ASSERT(ok, "Out of memory");
|
||
}
|
||
}
|
||
|
||
if (aDeep && (!aClone || !aNode->IsAttr())) {
|
||
// aNode's children.
|
||
for (nsIContent* cloneChild = aNode->GetFirstChild();
|
||
cloneChild;
|
||
cloneChild = cloneChild->GetNextSibling()) {
|
||
nsCOMPtr<nsINode> child =
|
||
CloneAndAdopt(cloneChild, aClone, true, nodeInfoManager,
|
||
aReparentScope, aNodesWithProperties, clone,
|
||
aError);
|
||
if (NS_WARN_IF(aError.Failed())) {
|
||
return nullptr;
|
||
}
|
||
}
|
||
}
|
||
|
||
if (aDeep && aNode->IsElement()) {
|
||
if (aClone) {
|
||
if (clone->OwnerDoc()->IsStaticDocument()) {
|
||
ShadowRoot* originalShadowRoot = aNode->AsElement()->GetShadowRoot();
|
||
if (originalShadowRoot) {
|
||
ShadowRootInit init;
|
||
init.mMode = originalShadowRoot->Mode();
|
||
RefPtr<ShadowRoot> newShadowRoot =
|
||
clone->AsElement()->AttachShadow(init, aError);
|
||
if (NS_WARN_IF(aError.Failed())) {
|
||
return nullptr;
|
||
}
|
||
|
||
newShadowRoot->CloneInternalDataFrom(originalShadowRoot);
|
||
for (nsIContent* origChild = originalShadowRoot->GetFirstChild();
|
||
origChild;
|
||
origChild = origChild->GetNextSibling()) {
|
||
nsCOMPtr<nsINode> child =
|
||
CloneAndAdopt(origChild, aClone, aDeep, nodeInfoManager,
|
||
aReparentScope, aNodesWithProperties, newShadowRoot,
|
||
aError);
|
||
if (NS_WARN_IF(aError.Failed())) {
|
||
return nullptr;
|
||
}
|
||
}
|
||
}
|
||
}
|
||
} else {
|
||
if (ShadowRoot* shadowRoot = aNode->AsElement()->GetShadowRoot()) {
|
||
nsCOMPtr<nsINode> child =
|
||
CloneAndAdopt(shadowRoot, aClone, aDeep, nodeInfoManager,
|
||
aReparentScope, aNodesWithProperties, clone,
|
||
aError);
|
||
if (NS_WARN_IF(aError.Failed())) {
|
||
return nullptr;
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
// Cloning template element.
|
||
if (aDeep && aClone && IsTemplateElement(aNode)) {
|
||
DocumentFragment* origContent =
|
||
static_cast<HTMLTemplateElement*>(aNode)->Content();
|
||
DocumentFragment* cloneContent =
|
||
static_cast<HTMLTemplateElement*>(clone.get())->Content();
|
||
|
||
// Clone the children into the clone's template content owner
|
||
// document's nodeinfo manager.
|
||
nsNodeInfoManager* ownerNodeInfoManager =
|
||
cloneContent->mNodeInfo->NodeInfoManager();
|
||
|
||
for (nsIContent* cloneChild = origContent->GetFirstChild();
|
||
cloneChild;
|
||
cloneChild = cloneChild->GetNextSibling()) {
|
||
nsCOMPtr<nsINode> child =
|
||
CloneAndAdopt(cloneChild, aClone, aDeep, ownerNodeInfoManager,
|
||
aReparentScope, aNodesWithProperties, cloneContent,
|
||
aError);
|
||
if (NS_WARN_IF(aError.Failed())) {
|
||
return nullptr;
|
||
}
|
||
}
|
||
}
|
||
|
||
return clone.forget();
|
||
}
|
||
|
||
bool
|
||
nsNodeUtils::IsTemplateElement(const nsINode *aNode)
|
||
{
|
||
return aNode->IsHTMLElement(nsGkAtoms::_template);
|
||
}
|
||
|
||
nsIContent*
|
||
nsNodeUtils::GetFirstChildOfTemplateOrNode(nsINode* aNode)
|
||
{
|
||
if (nsNodeUtils::IsTemplateElement(aNode)) {
|
||
DocumentFragment* frag =
|
||
static_cast<HTMLTemplateElement*>(aNode)->Content();
|
||
return frag->GetFirstChild();
|
||
}
|
||
|
||
return aNode->GetFirstChild();
|
||
}
|