mirror of
https://github.com/mozilla/gecko-dev.git
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681 lines
25 KiB
C++
681 lines
25 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "nsNodeUtils.h"
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#include "nsContentUtils.h"
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#include "nsCSSPseudoElements.h"
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#include "nsINode.h"
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#include "nsIContent.h"
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#include "mozilla/dom/Element.h"
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#include "nsIMutationObserver.h"
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#include "nsIDocument.h"
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#include "mozilla/EventListenerManager.h"
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#include "nsIXPConnect.h"
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#include "PLDHashTable.h"
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#include "nsIDOMAttr.h"
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#include "nsCOMArray.h"
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#include "nsPIDOMWindow.h"
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#include "nsDocument.h"
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#ifdef MOZ_XUL
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#include "nsXULElement.h"
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#endif
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#include "nsBindingManager.h"
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#include "nsGenericHTMLElement.h"
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#include "mozilla/AnimationTarget.h"
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#include "mozilla/Assertions.h"
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#include "mozilla/dom/Animation.h"
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#include "mozilla/dom/HTMLImageElement.h"
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#include "mozilla/dom/HTMLMediaElement.h"
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#include "mozilla/dom/KeyframeEffect.h"
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#include "nsWrapperCacheInlines.h"
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#include "nsObjectLoadingContent.h"
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#include "nsDOMMutationObserver.h"
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#include "mozilla/dom/BindingUtils.h"
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#include "mozilla/dom/HTMLTemplateElement.h"
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#include "mozilla/dom/ShadowRoot.h"
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using namespace mozilla;
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using namespace mozilla::dom;
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using mozilla::AutoJSContext;
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// This macro expects the ownerDocument of content_ to be in scope as
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// |nsIDocument* doc|
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#define IMPL_MUTATION_NOTIFICATION(func_, content_, params_) \
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PR_BEGIN_MACRO \
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bool needsEnterLeave = doc->MayHaveDOMMutationObservers(); \
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if (needsEnterLeave) { \
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nsDOMMutationObserver::EnterMutationHandling(); \
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} \
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nsINode* node = content_; \
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NS_ASSERTION(node->OwnerDoc() == doc, "Bogus document"); \
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if (doc) { \
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doc->BindingManager()->func_ params_; \
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} \
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do { \
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nsINode::nsSlots* slots = node->GetExistingSlots(); \
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if (slots && !slots->mMutationObservers.IsEmpty()) { \
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/* No need to explicitly notify the first observer first \
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since that'll happen anyway. */ \
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NS_OBSERVER_ARRAY_NOTIFY_OBSERVERS( \
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slots->mMutationObservers, nsIMutationObserver, \
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func_, params_); \
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} \
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ShadowRoot* shadow = ShadowRoot::FromNode(node); \
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if (shadow) { \
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node = shadow->GetPoolHost(); \
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} else { \
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node = node->GetParentNode(); \
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} \
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} while (node); \
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if (needsEnterLeave) { \
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nsDOMMutationObserver::LeaveMutationHandling(); \
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} \
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PR_END_MACRO
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#define IMPL_ANIMATION_NOTIFICATION(func_, content_, params_) \
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PR_BEGIN_MACRO \
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bool needsEnterLeave = doc->MayHaveDOMMutationObservers(); \
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if (needsEnterLeave) { \
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nsDOMMutationObserver::EnterMutationHandling(); \
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} \
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nsINode* node = content_; \
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do { \
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nsINode::nsSlots* slots = node->GetExistingSlots(); \
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if (slots && !slots->mMutationObservers.IsEmpty()) { \
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/* No need to explicitly notify the first observer first \
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since that'll happen anyway. */ \
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NS_OBSERVER_ARRAY_NOTIFY_OBSERVERS_WITH_QI( \
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slots->mMutationObservers, nsIMutationObserver, \
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nsIAnimationObserver, func_, params_); \
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} \
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ShadowRoot* shadow = ShadowRoot::FromNode(node); \
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if (shadow) { \
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node = shadow->GetPoolHost(); \
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} else { \
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node = node->GetParentNode(); \
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} \
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} while (node); \
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if (needsEnterLeave) { \
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nsDOMMutationObserver::LeaveMutationHandling(); \
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} \
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PR_END_MACRO
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void
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nsNodeUtils::CharacterDataWillChange(nsIContent* aContent,
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CharacterDataChangeInfo* aInfo)
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{
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nsIDocument* doc = aContent->OwnerDoc();
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IMPL_MUTATION_NOTIFICATION(CharacterDataWillChange, aContent,
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(doc, aContent, aInfo));
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}
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void
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nsNodeUtils::CharacterDataChanged(nsIContent* aContent,
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CharacterDataChangeInfo* aInfo)
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{
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nsIDocument* doc = aContent->OwnerDoc();
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IMPL_MUTATION_NOTIFICATION(CharacterDataChanged, aContent,
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(doc, aContent, aInfo));
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}
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void
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nsNodeUtils::AttributeWillChange(Element* aElement,
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int32_t aNameSpaceID,
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nsIAtom* aAttribute,
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int32_t aModType,
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const nsAttrValue* aNewValue)
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{
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nsIDocument* doc = aElement->OwnerDoc();
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IMPL_MUTATION_NOTIFICATION(AttributeWillChange, aElement,
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(doc, aElement, aNameSpaceID, aAttribute,
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aModType, aNewValue));
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}
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void
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nsNodeUtils::AttributeChanged(Element* aElement,
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int32_t aNameSpaceID,
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nsIAtom* aAttribute,
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int32_t aModType,
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const nsAttrValue* aOldValue)
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{
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nsIDocument* doc = aElement->OwnerDoc();
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IMPL_MUTATION_NOTIFICATION(AttributeChanged, aElement,
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(doc, aElement, aNameSpaceID, aAttribute,
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aModType, aOldValue));
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}
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void
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nsNodeUtils::AttributeSetToCurrentValue(Element* aElement,
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int32_t aNameSpaceID,
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nsIAtom* aAttribute)
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{
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nsIDocument* doc = aElement->OwnerDoc();
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IMPL_MUTATION_NOTIFICATION(AttributeSetToCurrentValue, aElement,
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(doc, aElement, aNameSpaceID, aAttribute));
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}
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void
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nsNodeUtils::ContentAppended(nsIContent* aContainer,
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nsIContent* aFirstNewContent,
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int32_t aNewIndexInContainer)
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{
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nsIDocument* doc = aContainer->OwnerDoc();
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IMPL_MUTATION_NOTIFICATION(ContentAppended, aContainer,
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(doc, aContainer, aFirstNewContent,
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aNewIndexInContainer));
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}
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void
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nsNodeUtils::NativeAnonymousChildListChange(nsIContent* aContent,
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bool aIsRemove)
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{
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nsIDocument* doc = aContent->OwnerDoc();
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IMPL_MUTATION_NOTIFICATION(NativeAnonymousChildListChange, aContent,
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(doc, aContent, aIsRemove));
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}
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void
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nsNodeUtils::ContentInserted(nsINode* aContainer,
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nsIContent* aChild,
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int32_t aIndexInContainer)
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{
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NS_PRECONDITION(aContainer->IsNodeOfType(nsINode::eCONTENT) ||
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aContainer->IsNodeOfType(nsINode::eDOCUMENT),
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"container must be an nsIContent or an nsIDocument");
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nsIContent* container;
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nsIDocument* doc = aContainer->OwnerDoc();
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nsIDocument* document;
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if (aContainer->IsNodeOfType(nsINode::eCONTENT)) {
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container = static_cast<nsIContent*>(aContainer);
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document = doc;
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}
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else {
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container = nullptr;
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document = static_cast<nsIDocument*>(aContainer);
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}
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IMPL_MUTATION_NOTIFICATION(ContentInserted, aContainer,
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(document, container, aChild, aIndexInContainer));
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}
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void
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nsNodeUtils::ContentRemoved(nsINode* aContainer,
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nsIContent* aChild,
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int32_t aIndexInContainer,
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nsIContent* aPreviousSibling)
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{
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NS_PRECONDITION(aContainer->IsNodeOfType(nsINode::eCONTENT) ||
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aContainer->IsNodeOfType(nsINode::eDOCUMENT),
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"container must be an nsIContent or an nsIDocument");
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nsIContent* container;
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nsIDocument* doc = aContainer->OwnerDoc();
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nsIDocument* document;
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if (aContainer->IsNodeOfType(nsINode::eCONTENT)) {
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container = static_cast<nsIContent*>(aContainer);
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document = doc;
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}
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else {
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container = nullptr;
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document = static_cast<nsIDocument*>(aContainer);
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}
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IMPL_MUTATION_NOTIFICATION(ContentRemoved, aContainer,
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(document, container, aChild, aIndexInContainer,
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aPreviousSibling));
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}
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Maybe<NonOwningAnimationTarget>
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nsNodeUtils::GetTargetForAnimation(const Animation* aAnimation)
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{
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KeyframeEffectReadOnly* effect = aAnimation->GetEffect();
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return effect ? effect->GetTarget() : Nothing();
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}
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void
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nsNodeUtils::AnimationMutated(Animation* aAnimation,
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AnimationMutationType aMutatedType)
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{
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Maybe<NonOwningAnimationTarget> target = GetTargetForAnimation(aAnimation);
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if (!target) {
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return;
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}
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// A pseudo element and its parent element use the same owner doc.
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nsIDocument* doc = target->mElement->OwnerDoc();
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if (doc->MayHaveAnimationObservers()) {
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// we use the its parent element as the subject in DOM Mutation Observer.
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Element* elem = target->mElement;
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switch (aMutatedType) {
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case AnimationMutationType::Added:
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IMPL_ANIMATION_NOTIFICATION(AnimationAdded, elem, (aAnimation));
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break;
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case AnimationMutationType::Changed:
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IMPL_ANIMATION_NOTIFICATION(AnimationChanged, elem, (aAnimation));
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break;
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case AnimationMutationType::Removed:
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IMPL_ANIMATION_NOTIFICATION(AnimationRemoved, elem, (aAnimation));
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break;
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default:
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MOZ_ASSERT_UNREACHABLE("unexpected mutation type");
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}
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}
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}
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void
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nsNodeUtils::AnimationAdded(Animation* aAnimation)
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{
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AnimationMutated(aAnimation, AnimationMutationType::Added);
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}
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void
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nsNodeUtils::AnimationChanged(Animation* aAnimation)
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{
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AnimationMutated(aAnimation, AnimationMutationType::Changed);
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}
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void
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nsNodeUtils::AnimationRemoved(Animation* aAnimation)
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{
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AnimationMutated(aAnimation, AnimationMutationType::Removed);
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}
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void
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nsNodeUtils::LastRelease(nsINode* aNode)
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{
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nsINode::nsSlots* slots = aNode->GetExistingSlots();
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if (slots) {
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if (!slots->mMutationObservers.IsEmpty()) {
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NS_OBSERVER_ARRAY_NOTIFY_OBSERVERS(slots->mMutationObservers,
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nsIMutationObserver,
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NodeWillBeDestroyed, (aNode));
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}
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delete slots;
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aNode->mSlots = nullptr;
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}
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// Kill properties first since that may run external code, so we want to
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// be in as complete state as possible at that time.
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if (aNode->IsNodeOfType(nsINode::eDOCUMENT)) {
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// Delete all properties before tearing down the document. Some of the
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// properties are bound to nsINode objects and the destructor functions of
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// the properties may want to use the owner document of the nsINode.
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static_cast<nsIDocument*>(aNode)->DeleteAllProperties();
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}
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else {
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if (aNode->HasProperties()) {
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// Strong reference to the document so that deleting properties can't
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// delete the document.
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nsCOMPtr<nsIDocument> document = aNode->OwnerDoc();
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document->DeleteAllPropertiesFor(aNode);
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}
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// I wonder whether it's faster to do the HasFlag check first....
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if (aNode->IsNodeOfType(nsINode::eHTML_FORM_CONTROL) &&
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aNode->HasFlag(ADDED_TO_FORM)) {
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// Tell the form (if any) this node is going away. Don't
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// notify, since we're being destroyed in any case.
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static_cast<nsGenericHTMLFormElement*>(aNode)->ClearForm(true);
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}
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if (aNode->IsHTMLElement(nsGkAtoms::img) &&
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aNode->HasFlag(ADDED_TO_FORM)) {
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HTMLImageElement* imageElem = static_cast<HTMLImageElement*>(aNode);
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imageElem->ClearForm(true);
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}
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}
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aNode->UnsetFlags(NODE_HAS_PROPERTIES);
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if (aNode->NodeType() != nsIDOMNode::DOCUMENT_NODE &&
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aNode->HasFlag(NODE_HAS_LISTENERMANAGER)) {
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#ifdef DEBUG
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if (nsContentUtils::IsInitialized()) {
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EventListenerManager* manager =
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nsContentUtils::GetExistingListenerManagerForNode(aNode);
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if (!manager) {
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NS_ERROR("Huh, our bit says we have a listener manager list, "
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"but there's nothing in the hash!?!!");
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}
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}
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#endif
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nsContentUtils::RemoveListenerManager(aNode);
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aNode->UnsetFlags(NODE_HAS_LISTENERMANAGER);
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}
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if (aNode->IsElement()) {
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nsIDocument* ownerDoc = aNode->OwnerDoc();
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Element* elem = aNode->AsElement();
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ownerDoc->ClearBoxObjectFor(elem);
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NS_ASSERTION(aNode->HasFlag(NODE_FORCE_XBL_BINDINGS) ||
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!elem->GetXBLBinding(),
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"Non-forced node has binding on destruction");
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// if NODE_FORCE_XBL_BINDINGS is set, the node might still have a binding
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// attached
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if (aNode->HasFlag(NODE_FORCE_XBL_BINDINGS) &&
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ownerDoc->BindingManager()) {
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ownerDoc->BindingManager()->RemovedFromDocument(elem, ownerDoc,
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nsBindingManager::eRunDtor);
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}
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}
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aNode->ReleaseWrapper(aNode);
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FragmentOrElement::RemoveBlackMarkedNode(aNode);
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}
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static void
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NoteUserData(void *aObject, nsIAtom *aKey, void *aXPCOMChild, void *aData)
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{
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nsCycleCollectionTraversalCallback* cb =
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static_cast<nsCycleCollectionTraversalCallback*>(aData);
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NS_CYCLE_COLLECTION_NOTE_EDGE_NAME(*cb, "[user data]");
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cb->NoteXPCOMChild(static_cast<nsISupports*>(aXPCOMChild));
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}
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/* static */
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void
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nsNodeUtils::TraverseUserData(nsINode* aNode,
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nsCycleCollectionTraversalCallback &aCb)
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{
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nsIDocument* ownerDoc = aNode->OwnerDoc();
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ownerDoc->PropertyTable(DOM_USER_DATA)->Enumerate(aNode, NoteUserData, &aCb);
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}
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/* static */
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nsresult
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nsNodeUtils::CloneNodeImpl(nsINode *aNode, bool aDeep, nsINode **aResult)
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{
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*aResult = nullptr;
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nsCOMPtr<nsINode> newNode;
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nsCOMArray<nsINode> nodesWithProperties;
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nsresult rv = Clone(aNode, aDeep, nullptr, nodesWithProperties,
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getter_AddRefs(newNode));
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NS_ENSURE_SUCCESS(rv, rv);
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newNode.forget(aResult);
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return NS_OK;
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}
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/* static */
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nsresult
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nsNodeUtils::CloneAndAdopt(nsINode *aNode, bool aClone, bool aDeep,
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nsNodeInfoManager *aNewNodeInfoManager,
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JS::Handle<JSObject*> aReparentScope,
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nsCOMArray<nsINode> &aNodesWithProperties,
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nsINode *aParent, nsINode **aResult)
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{
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NS_PRECONDITION((!aClone && aNewNodeInfoManager) || !aReparentScope,
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"If cloning or not getting a new nodeinfo we shouldn't "
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"rewrap");
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NS_PRECONDITION(!aParent || aNode->IsNodeOfType(nsINode::eCONTENT),
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"Can't insert document or attribute nodes into a parent");
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*aResult = nullptr;
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// First deal with aNode and walk its attributes (and their children). Then,
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// if aDeep is true, deal with aNode's children (and recurse into their
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// attributes and children).
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nsAutoScriptBlocker scriptBlocker;
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nsresult rv;
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nsNodeInfoManager *nodeInfoManager = aNewNodeInfoManager;
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// aNode.
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NodeInfo *nodeInfo = aNode->mNodeInfo;
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RefPtr<NodeInfo> newNodeInfo;
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if (nodeInfoManager) {
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// Don't allow importing/adopting nodes from non-privileged "scriptable"
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// documents to "non-scriptable" documents.
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nsIDocument* newDoc = nodeInfoManager->GetDocument();
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NS_ENSURE_STATE(newDoc);
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bool hasHadScriptHandlingObject = false;
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if (!newDoc->GetScriptHandlingObject(hasHadScriptHandlingObject) &&
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!hasHadScriptHandlingObject) {
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nsIDocument* currentDoc = aNode->OwnerDoc();
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NS_ENSURE_STATE((nsContentUtils::IsChromeDoc(currentDoc) ||
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(!currentDoc->GetScriptHandlingObject(hasHadScriptHandlingObject) &&
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!hasHadScriptHandlingObject)));
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}
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newNodeInfo = nodeInfoManager->GetNodeInfo(nodeInfo->NameAtom(),
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nodeInfo->GetPrefixAtom(),
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nodeInfo->NamespaceID(),
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nodeInfo->NodeType(),
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nodeInfo->GetExtraName());
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nodeInfo = newNodeInfo;
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}
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Element *elem = aNode->IsElement() ? aNode->AsElement() : nullptr;
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nsCOMPtr<nsINode> clone;
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if (aClone) {
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rv = aNode->Clone(nodeInfo, getter_AddRefs(clone));
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NS_ENSURE_SUCCESS(rv, rv);
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if (clone->IsElement()) {
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// The cloned node may be a custom element that may require
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// enqueing created callback and prototype swizzling.
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Element* elem = clone->AsElement();
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if (nsContentUtils::IsCustomElementName(nodeInfo->NameAtom())) {
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elem->OwnerDoc()->SetupCustomElement(elem, nodeInfo->NamespaceID());
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} else {
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// Check if node may be custom element by type extension.
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// ex. <button is="x-button">
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nsAutoString extension;
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if (elem->GetAttr(kNameSpaceID_None, nsGkAtoms::is, extension) &&
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!extension.IsEmpty()) {
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elem->OwnerDoc()->SetupCustomElement(elem, nodeInfo->NamespaceID(),
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&extension);
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}
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}
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}
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if (aParent) {
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// If we're cloning we need to insert the cloned children into the cloned
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// parent.
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rv = aParent->AppendChildTo(static_cast<nsIContent*>(clone.get()),
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false);
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NS_ENSURE_SUCCESS(rv, rv);
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}
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else if (aDeep && clone->IsNodeOfType(nsINode::eDOCUMENT)) {
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// 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 (aNode->IsElement()) {
|
|
Element* element = aNode->AsElement();
|
|
oldDoc->ClearBoxObjectFor(element);
|
|
wasRegistered = oldDoc->UnregisterActivityObserver(element);
|
|
}
|
|
|
|
aNode->mNodeInfo.swap(newNodeInfo);
|
|
if (elem) {
|
|
elem->NodeInfoChanged();
|
|
}
|
|
|
|
nsIDocument* newDoc = aNode->OwnerDoc();
|
|
if (newDoc) {
|
|
// 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 (wasRegistered && oldDoc != newDoc) {
|
|
nsCOMPtr<nsIDOMHTMLMediaElement> domMediaElem(do_QueryInterface(aNode));
|
|
if (domMediaElem) {
|
|
HTMLMediaElement* mediaElem = static_cast<HTMLMediaElement*>(aNode);
|
|
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));
|
|
JSAutoCompartment ac(cx, wrapper);
|
|
rv = ReparentWrapper(cx, wrapper);
|
|
if (NS_FAILED(rv)) {
|
|
aNode->mNodeInfo.swap(nodeInfo);
|
|
|
|
return rv;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if (aDeep && (!aClone || !aNode->IsNodeOfType(nsINode::eATTRIBUTE))) {
|
|
// aNode's children.
|
|
for (nsIContent* cloneChild = aNode->GetFirstChild();
|
|
cloneChild;
|
|
cloneChild = cloneChild->GetNextSibling()) {
|
|
nsCOMPtr<nsINode> child;
|
|
rv = CloneAndAdopt(cloneChild, aClone, true, nodeInfoManager,
|
|
aReparentScope, aNodesWithProperties, clone,
|
|
getter_AddRefs(child));
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
}
|
|
}
|
|
|
|
// 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;
|
|
rv = CloneAndAdopt(cloneChild, aClone, aDeep, ownerNodeInfoManager,
|
|
aReparentScope, aNodesWithProperties, cloneContent,
|
|
getter_AddRefs(child));
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
}
|
|
}
|
|
|
|
// XXX setting document on some nodes not in a document so XBL will bind
|
|
// and chrome won't break. Make XBL bind to document-less nodes!
|
|
// XXXbz Once this is fixed, fix up the asserts in all implementations of
|
|
// BindToTree to assert what they would like to assert, and fix the
|
|
// ChangeDocumentFor() call in nsXULElement::BindToTree as well. Also,
|
|
// remove the UnbindFromTree call in ~nsXULElement, and add back in the
|
|
// precondition in nsXULElement::UnbindFromTree and remove the line in
|
|
// nsXULElement.h that makes nsNodeUtils a friend of nsXULElement.
|
|
// Note: Make sure to do this witchery _after_ we've done any deep
|
|
// cloning, so kids of the new node aren't confused about whether they're
|
|
// in a document.
|
|
#ifdef MOZ_XUL
|
|
if (aClone && !aParent && aNode->IsXULElement()) {
|
|
if (!aNode->OwnerDoc()->IsLoadedAsInteractiveData()) {
|
|
clone->SetFlags(NODE_FORCE_XBL_BINDINGS);
|
|
}
|
|
}
|
|
#endif
|
|
|
|
if (aNode->HasProperties()) {
|
|
bool ok = aNodesWithProperties.AppendObject(aNode);
|
|
if (aClone) {
|
|
ok = ok && aNodesWithProperties.AppendObject(clone);
|
|
}
|
|
|
|
NS_ENSURE_TRUE(ok, NS_ERROR_OUT_OF_MEMORY);
|
|
}
|
|
|
|
clone.forget(aResult);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
|
|
/* static */
|
|
void
|
|
nsNodeUtils::UnlinkUserData(nsINode *aNode)
|
|
{
|
|
NS_ASSERTION(aNode->HasProperties(), "Call to UnlinkUserData not needed.");
|
|
|
|
// Strong reference to the document so that deleting properties can't
|
|
// delete the document.
|
|
nsCOMPtr<nsIDocument> document = aNode->OwnerDoc();
|
|
document->PropertyTable(DOM_USER_DATA)->DeleteAllPropertiesFor(aNode);
|
|
}
|
|
|
|
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();
|
|
}
|
|
|