зеркало из https://github.com/mozilla/gecko-dev.git
261 строка
12 KiB
C++
261 строка
12 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 "MutationObservers.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 "nsIContentInlines.h"
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#include "mozilla/dom/Document.h"
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#include "mozilla/dom/DocumentInlines.h"
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#include "mozilla/dom/Element.h"
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#include "nsIMutationObserver.h"
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#include "mozilla/EventListenerManager.h"
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#include "PLDHashTable.h"
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#include "nsCOMArray.h"
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#include "nsPIDOMWindow.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 "nsGenericHTMLElement.h"
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#include "mozilla/AnimationTarget.h"
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#include "mozilla/Assertions.h"
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#include "mozilla/ErrorResult.h"
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#include "mozilla/dom/Animation.h"
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#include "mozilla/dom/KeyframeEffect.h"
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#include "mozilla/PresShell.h"
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#include "nsWrapperCacheInlines.h"
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#include "nsDOMMutationObserver.h"
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#include "mozilla/dom/BindingUtils.h"
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#include "mozilla/dom/CustomElementRegistry.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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enum class IsRemoveNotification {
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Yes,
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No,
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};
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#ifdef DEBUG
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# define COMPOSED_DOC_DECL \
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const bool wasInComposedDoc = !!node->GetComposedDoc();
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#else
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# define COMPOSED_DOC_DECL
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#endif
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#define CALL_BINDING_MANAGER(func_, params_) \
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do { \
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} while (0)
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// This macro expects the ownerDocument of content_ to be in scope as
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// |Document* doc|
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#define IMPL_MUTATION_NOTIFICATION(func_, content_, params_, remove_) \
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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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COMPOSED_DOC_DECL \
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NS_ASSERTION(node->OwnerDoc() == doc, "Bogus document"); \
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if (remove_ == IsRemoveNotification::Yes && node->GetComposedDoc()) { \
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if (PresShell* presShell = doc->GetObservingPresShell()) { \
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presShell->func_ params_; \
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} \
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} \
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CALL_BINDING_MANAGER(func_, params_); \
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nsINode* last; \
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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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NS_OBSERVER_ARRAY_NOTIFY_OBSERVERS(slots->mMutationObservers, func_, \
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params_); \
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} \
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last = node; \
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if (ShadowRoot* shadow = ShadowRoot::FromNode(node)) { \
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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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/* Whitelist NativeAnonymousChildListChange removal notifications from \
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* the assertion since it runs from UnbindFromTree, and thus we don't \
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* reach the document, but doesn't matter. */ \
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MOZ_ASSERT((last == doc) == wasInComposedDoc || \
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(remove_ == IsRemoveNotification::Yes && \
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!strcmp(#func_, "NativeAnonymousChildListChange"))); \
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if (remove_ == IsRemoveNotification::No && last == doc) { \
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if (PresShell* presShell = doc->GetObservingPresShell()) { \
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presShell->func_ params_; \
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} \
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} \
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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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NS_OBSERVER_ARRAY_NOTIFY_OBSERVERS_WITH_QI( \
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slots->mMutationObservers, nsIAnimationObserver, func_, params_); \
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} \
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if (ShadowRoot* shadow = ShadowRoot::FromNode(node)) { \
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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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namespace mozilla {
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void MutationObservers::NotifyCharacterDataWillChange(
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nsIContent* aContent, const CharacterDataChangeInfo& aInfo) {
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Document* doc = aContent->OwnerDoc();
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IMPL_MUTATION_NOTIFICATION(CharacterDataWillChange, aContent,
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(aContent, aInfo), IsRemoveNotification::No);
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}
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void MutationObservers::NotifyCharacterDataChanged(
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nsIContent* aContent, const CharacterDataChangeInfo& aInfo) {
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Document* doc = aContent->OwnerDoc();
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doc->Changed();
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IMPL_MUTATION_NOTIFICATION(CharacterDataChanged, aContent, (aContent, aInfo),
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IsRemoveNotification::No);
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}
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void MutationObservers::NotifyAttributeWillChange(Element* aElement,
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int32_t aNameSpaceID,
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nsAtom* aAttribute,
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int32_t aModType) {
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Document* doc = aElement->OwnerDoc();
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IMPL_MUTATION_NOTIFICATION(AttributeWillChange, aElement,
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(aElement, aNameSpaceID, aAttribute, aModType),
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IsRemoveNotification::No);
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}
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void MutationObservers::NotifyAttributeChanged(Element* aElement,
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int32_t aNameSpaceID,
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nsAtom* aAttribute,
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int32_t aModType,
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const nsAttrValue* aOldValue) {
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Document* doc = aElement->OwnerDoc();
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doc->Changed();
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IMPL_MUTATION_NOTIFICATION(
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AttributeChanged, aElement,
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(aElement, aNameSpaceID, aAttribute, aModType, aOldValue),
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IsRemoveNotification::No);
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}
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void MutationObservers::NotifyAttributeSetToCurrentValue(Element* aElement,
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int32_t aNameSpaceID,
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nsAtom* aAttribute) {
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Document* doc = aElement->OwnerDoc();
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IMPL_MUTATION_NOTIFICATION(AttributeSetToCurrentValue, aElement,
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(aElement, aNameSpaceID, aAttribute),
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IsRemoveNotification::No);
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}
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void MutationObservers::NotifyContentAppended(nsIContent* aContainer,
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nsIContent* aFirstNewContent) {
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Document* doc = aContainer->OwnerDoc();
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doc->Changed();
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IMPL_MUTATION_NOTIFICATION(ContentAppended, aContainer, (aFirstNewContent),
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IsRemoveNotification::No);
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}
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void MutationObservers::NotifyNativeAnonymousChildListChange(
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nsIContent* aContent, bool aIsRemove) {
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Document* doc = aContent->OwnerDoc();
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auto isRemove =
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aIsRemove ? IsRemoveNotification::Yes : IsRemoveNotification::No;
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IMPL_MUTATION_NOTIFICATION(NativeAnonymousChildListChange, aContent,
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(aContent, aIsRemove), isRemove);
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}
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void MutationObservers::NotifyContentInserted(nsINode* aContainer,
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nsIContent* aChild) {
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MOZ_ASSERT(aContainer->IsContent() || aContainer->IsDocument(),
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"container must be an nsIContent or an Document");
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Document* doc = aContainer->OwnerDoc();
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doc->Changed();
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IMPL_MUTATION_NOTIFICATION(ContentInserted, aContainer, (aChild),
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IsRemoveNotification::No);
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}
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void MutationObservers::NotifyContentRemoved(nsINode* aContainer,
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nsIContent* aChild,
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nsIContent* aPreviousSibling) {
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MOZ_ASSERT(aContainer->IsContent() || aContainer->IsDocument(),
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"container must be an nsIContent or an Document");
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Document* doc = aContainer->OwnerDoc();
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doc->Changed();
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MOZ_ASSERT(aChild->GetParentNode() == aContainer,
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"We expect the parent link to be still around at this point");
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IMPL_MUTATION_NOTIFICATION(ContentRemoved, aContainer,
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(aChild, aPreviousSibling),
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IsRemoveNotification::Yes);
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}
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} // namespace mozilla
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void MutationObservers::NotifyAnimationMutated(
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dom::Animation* aAnimation, AnimationMutationType aMutatedType) {
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MOZ_ASSERT(aAnimation);
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NonOwningAnimationTarget target = aAnimation->GetTargetForAnimation();
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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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Document* 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 MutationObservers::NotifyAnimationAdded(dom::Animation* aAnimation) {
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NotifyAnimationMutated(aAnimation, AnimationMutationType::Added);
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}
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void MutationObservers::NotifyAnimationChanged(dom::Animation* aAnimation) {
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NotifyAnimationMutated(aAnimation, AnimationMutationType::Changed);
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}
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void MutationObservers::NotifyAnimationRemoved(dom::Animation* aAnimation) {
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NotifyAnimationMutated(aAnimation, AnimationMutationType::Removed);
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}
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