731 lines
27 KiB
C++
731 lines
27 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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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/KeyframeEffectReadOnly.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->GetHost(); \
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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->GetHost(); \
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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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AnimationEffectReadOnly* effect = aAnimation->GetEffect();
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if (!effect || !effect->AsKeyframeEffect()) {
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return Nothing();
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}
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return effect->AsKeyframeEffect()->GetTarget();
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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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if (aNode->IsElement()) {
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Element* elem = aNode->AsElement();
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FragmentOrElement::nsDOMSlots* domSlots =
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static_cast<FragmentOrElement::nsDOMSlots*>(slots);
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if (domSlots->mExtendedSlots) {
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for (auto iter = domSlots->mExtendedSlots->mRegisteredIntersectionObservers.Iter();
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!iter.Done(); iter.Next()) {
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DOMIntersectionObserver* observer = iter.Key();
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observer->UnlinkTarget(*elem);
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}
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}
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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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|
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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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|
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newNode.forget(aResult);
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return NS_OK;
|
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}
|
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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,
|
||
nsINode *aParent, nsINode **aResult)
|
||
{
|
||
NS_PRECONDITION((!aClone && aNewNodeInfoManager) || !aReparentScope,
|
||
"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),
|
||
"Can't insert document or attribute nodes into a parent");
|
||
|
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*aResult = nullptr;
|
||
|
||
// 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;
|
||
nsresult rv;
|
||
|
||
nsNodeInfoManager *nodeInfoManager = aNewNodeInfoManager;
|
||
|
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// aNode.
|
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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();
|
||
NS_ENSURE_STATE(newDoc);
|
||
bool hasHadScriptHandlingObject = false;
|
||
if (!newDoc->GetScriptHandlingObject(hasHadScriptHandlingObject) &&
|
||
!hasHadScriptHandlingObject) {
|
||
nsIDocument* currentDoc = aNode->OwnerDoc();
|
||
NS_ENSURE_STATE((nsContentUtils::IsChromeDoc(currentDoc) ||
|
||
(!currentDoc->GetScriptHandlingObject(hasHadScriptHandlingObject) &&
|
||
!hasHadScriptHandlingObject)));
|
||
}
|
||
|
||
newNodeInfo = nodeInfoManager->GetNodeInfo(nodeInfo->NameAtom(),
|
||
nodeInfo->GetPrefixAtom(),
|
||
nodeInfo->NamespaceID(),
|
||
nodeInfo->NodeType(),
|
||
nodeInfo->GetExtraName());
|
||
|
||
nodeInfo = newNodeInfo;
|
||
}
|
||
|
||
Element *elem = aNode->IsElement() ? aNode->AsElement() : nullptr;
|
||
|
||
nsCOMPtr<nsINode> clone;
|
||
if (aClone) {
|
||
rv = aNode->Clone(nodeInfo, getter_AddRefs(clone));
|
||
NS_ENSURE_SUCCESS(rv, rv);
|
||
|
||
if (CustomElementRegistry::IsCustomElementEnabled() &&
|
||
clone->IsHTMLElement()) {
|
||
// The cloned node may be a custom element that may require
|
||
// enqueing upgrade reaction.
|
||
Element* cloneElem = clone->AsElement();
|
||
RefPtr<nsIAtom> tagAtom = nodeInfo->NameAtom();
|
||
CustomElementData* data = elem->GetCustomElementData();
|
||
|
||
// Check if node may be custom element by type extension.
|
||
// ex. <button is="x-button">
|
||
nsAutoString extension;
|
||
if (!data || data->GetCustomElementType() != tagAtom) {
|
||
cloneElem->GetAttr(kNameSpaceID_None, nsGkAtoms::is, extension);
|
||
}
|
||
|
||
if (data || !extension.IsEmpty()) {
|
||
RefPtr<nsIAtom> typeAtom = extension.IsEmpty() ? tagAtom : NS_Atomize(extension);
|
||
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);
|
||
NS_ENSURE_SUCCESS(rv, rv);
|
||
}
|
||
else if (aDeep && clone->IsNodeOfType(nsINode::eDOCUMENT)) {
|
||
// 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) {
|
||
if (CustomElementRegistry::IsCustomElementEnabled()) {
|
||
// Adopted callback must be enqueued whenever a node’s
|
||
// shadow-including inclusive descendants that is custom.
|
||
Element* element = aNode->IsElement() ? aNode->AsElement() : nullptr;
|
||
if (element) {
|
||
CustomElementData* data = element->GetCustomElementData();
|
||
if (data && data->mState == CustomElementData::State::eCustom) {
|
||
LifecycleAdoptedCallbackArgs args = {
|
||
oldDoc,
|
||
newDoc
|
||
};
|
||
nsContentUtils::EnqueueLifecycleCallback(nsIDocument::eAdopted,
|
||
element, 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 (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)) {
|
||
if (wasRegistered) {
|
||
aNode->OwnerDoc()->UnregisterActivityObserver(aNode->AsElement());
|
||
}
|
||
aNode->mNodeInfo.swap(newNodeInfo);
|
||
if (wasRegistered) {
|
||
aNode->OwnerDoc()->RegisterActivityObserver(aNode->AsElement());
|
||
}
|
||
return rv;
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
if (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->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
|
||
|
||
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();
|
||
}
|
||
|