Keith Cirkel
0a56fc2635
Sanitizing while parsing needs to insert content at a position other than the end of a parent's child list, because content whose parent the sanitizer replaced with its children keeps the position that parent would have had. This change prepares for that, without any sanitizer-visible behaviour: - The node, text and comment insertion paths are factored into PrepareForInsertion(), InsertNodeBefore(), InsertTextImpl() and InsertCommentImpl(), and gain InsertBefore(), InsertTextBefore() and InsertCommentBefore() variants that take the node to insert before, - GetFosterParent() is split so that GetFosterParentForInsertBefore() exposes the foster parent to insert before the table in, without the stack parent fallback, - IsElementOrTemplateContent() becomes IsPossibleFosterParent(): the spec says "if the adjusted insertion location's last table has a parent node", and any parent node qualifies, including the DocumentFragment that roots a fragment parse, - nsHtml5HtmlAttributes gains entryAt() and removeAttributeAt(), so that a start tag token's attributes can be filtered before they reach the element. Differential Revision: https://phabricator.services.mozilla.com/D320669
1636 lines
58 KiB
C++
1636 lines
58 KiB
C++
/* 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 "nsHtml5TreeOperation.h"
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#include "mozAutoDocUpdate.h"
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#include "mozilla/CycleCollectedJSContext.h"
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#include "mozilla/Likely.h"
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#include "mozilla/StaticPrefs_dom.h"
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#include "mozilla/dom/Comment.h"
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#include "mozilla/dom/CustomElementRegistry.h"
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#include "mozilla/dom/DocGroup.h"
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#include "mozilla/dom/Document.h"
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#include "mozilla/dom/DocumentFragment.h"
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#include "mozilla/dom/DocumentType.h"
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#include "mozilla/dom/Element.h"
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#include "mozilla/dom/LinkStyle.h"
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#include "mozilla/dom/HTMLFormElement.h"
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#include "mozilla/dom/HTMLImageElement.h"
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#include "mozilla/dom/HTMLTemplateElement.h"
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#include "mozilla/dom/MutationObservers.h"
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#include "mozilla/dom/ShadowRoot.h"
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#include "mozilla/dom/Text.h"
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#include "nsAttrName.h"
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#include "nsContentCreatorFunctions.h"
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#include "nsContentUtils.h"
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#include "nsDocElementCreatedNotificationRunner.h"
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#include "nsEscape.h"
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#include "nsGenericHTMLElement.h"
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#include "nsHtml5AutoPauseUpdate.h"
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#include "nsHtml5DocumentMode.h"
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#include "nsHtml5HtmlAttributes.h"
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#include "nsHtml5SVGLoadDispatcher.h"
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#include "nsHtml5TreeBuilder.h"
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#include "nsIFormControl.h"
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#include "nsIContentInlines.h"
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#include "nsIMutationObserver.h"
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#include "nsINode.h"
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#include "nsIProtocolHandler.h"
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#include "nsIScriptElement.h"
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#include "nsISupportsImpl.h"
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#include "nsIURI.h"
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#include "nsNetUtil.h"
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#include "nsTextNode.h"
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#include "js/ColumnNumber.h" // JS::ColumnNumberOneOrigin
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using namespace mozilla;
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using namespace mozilla::dom;
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// If you are adding fields to a tree op and this static assert fails,
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// please consider reordering the fields to avoid excess padding or,
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// if that doesn't help, splitting a rare operation into multiple
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// tree ops before allowing the size of all operations to get larger.
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static_assert(sizeof(nsHtml5TreeOperation) <= 56);
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/**
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* Helper class that opens a notification batch if the current doc
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* is different from the executor doc.
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*/
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class MOZ_STACK_CLASS nsHtml5OtherDocUpdate {
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public:
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nsHtml5OtherDocUpdate(Document* aCurrentDoc, Document* aExecutorDoc) {
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MOZ_ASSERT(aCurrentDoc, "Node has no doc?");
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MOZ_ASSERT(aExecutorDoc, "Executor has no doc?");
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if (MOZ_LIKELY(aCurrentDoc == aExecutorDoc)) {
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mDocument = nullptr;
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} else {
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mDocument = aCurrentDoc;
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aCurrentDoc->BeginUpdate();
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}
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}
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~nsHtml5OtherDocUpdate() {
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if (MOZ_UNLIKELY(mDocument)) {
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mDocument->EndUpdate();
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}
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}
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private:
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RefPtr<Document> mDocument;
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};
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nsHtml5TreeOperation::nsHtml5TreeOperation() : mOperation(uninitialized()) {
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MOZ_COUNT_CTOR(nsHtml5TreeOperation);
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}
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nsHtml5TreeOperation::~nsHtml5TreeOperation() {
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MOZ_COUNT_DTOR(nsHtml5TreeOperation);
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struct TreeOperationMatcher {
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void operator()(const opAppend& aOperation) {}
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void operator()(const opDetach& aOperation) {}
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void operator()(const opAppendChildrenToNewParent& aOperation) {}
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void operator()(const opFosterParent& aOperation) {}
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void operator()(const opAppendToDocument& aOperation) {}
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void operator()(const opAddAttributes& aOperation) {
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delete aOperation.mAttributes;
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}
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void operator()(const nsHtml5DocumentMode& aMode) {}
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void operator()(const opCreateHTMLElement& aOperation) {
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aOperation.mName->Release();
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delete aOperation.mAttributes;
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}
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void operator()(const opCreateSVGElement& aOperation) {
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aOperation.mName->Release();
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delete aOperation.mAttributes;
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}
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void operator()(const opCreateMathMLElement& aOperation) {
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aOperation.mName->Release();
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delete aOperation.mAttributes;
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}
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void operator()(const opSetFormElement& aOperation) {}
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void operator()(const opAppendText& aOperation) {
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delete[] aOperation.mBuffer;
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}
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void operator()(const opFosterParentText& aOperation) {
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delete[] aOperation.mBuffer;
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}
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void operator()(const opAppendComment& aOperation) {
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delete[] aOperation.mBuffer;
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}
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void operator()(const opAppendCommentToDocument& aOperation) {
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delete[] aOperation.mBuffer;
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}
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void operator()(const opAppendDoctypeToDocument& aOperation) {
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aOperation.mName->Release();
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delete aOperation.mStringPair;
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}
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void operator()(const opGetDocumentFragmentForTemplate& aOperation) {}
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void operator()(const opSetDocumentFragmentForTemplate& aOperation) {}
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void operator()(const opGetShadowRootFromHost& aOperation) {}
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void operator()(const opGetFosterParent& aOperation) {}
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void operator()(const opMarkAsBroken& aOperation) {}
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void operator()(const opRunScriptThatMayDocumentWriteOrBlock& aOperation) {}
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void operator()(
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const opRunScriptThatCannotDocumentWriteOrBlock& aOperation) {}
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void operator()(const opPreventScriptExecution& aOperation) {}
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void operator()(const opDoneAddingChildren& aOperation) {}
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void operator()(const opDoneCreatingElement& aOperation) {}
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void operator()(const opUpdateCharsetSource& aOperation) {}
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void operator()(const opCharsetSwitchTo& aOperation) {}
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void operator()(const opUpdateStyleSheet& aOperation) {}
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void operator()(const opProcessOfflineManifest& aOperation) {
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free(aOperation.mUrl);
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}
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void operator()(const opMarkMalformedIfScript& aOperation) {}
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void operator()(const opStreamEnded& aOperation) {}
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void operator()(const opSetStyleLineNumber& aOperation) {}
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void operator()(const opSetScriptLineAndColumnNumberAndFreeze& aOperation) {
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}
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void operator()(const opSvgLoad& aOperation) {}
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void operator()(const opMaybeComplainAboutCharset& aOperation) {}
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void operator()(const opMaybeComplainAboutDeepTree& aOperation) {}
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void operator()(const opAddClass& aOperation) {}
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void operator()(const opAddViewSourceHref& aOperation) {
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delete[] aOperation.mBuffer;
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}
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void operator()(const opAddViewSourceBase& aOperation) {
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delete[] aOperation.mBuffer;
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}
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void operator()(const opAddErrorType& aOperation) {
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if (aOperation.mName) {
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aOperation.mName->Release();
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}
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if (aOperation.mOther) {
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aOperation.mOther->Release();
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}
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}
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void operator()(const opAddLineNumberId& aOperation) {}
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void operator()(const opShallowCloneInto& aOperation) {}
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void operator()(const opStartLayout& aOperation) {}
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void operator()(const opEnableEncodingMenu& aOperation) {}
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void operator()(const opMicrotaskCheckpoint& aOperation) {}
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void operator()(const uninitialized& aOperation) {
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NS_WARNING("Uninitialized tree op.");
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}
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};
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mOperation.match(TreeOperationMatcher());
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}
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void nsHtml5TreeOperation::AbortNodeInsertion(nsINode* aNode) {
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if (auto* formControl = nsGenericHTMLFormControlElement::FromNode(aNode)) {
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// Clear form for this element, since it will not actually be
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// inserted.
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formControl->ClearForm(true, true);
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} else if (auto* image = HTMLImageElement::FromNode(aNode)) {
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image->ClearForm(true);
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}
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}
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// Inserts aNode into aParent immediately before aBefore, or appends it when
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// aBefore is null.
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static MOZ_ALWAYS_INLINE nsresult
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InsertNodeBefore(nsIContent* aNode, nsIContent* aParent, nsIContent* aBefore,
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nsHtml5DocumentBuilder* aBuilder) {
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MOZ_ASSERT(aBuilder);
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MOZ_ASSERT(aBuilder->IsInDocUpdate());
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MOZ_ASSERT(!aNode->GetParentNode());
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if (!aBefore) {
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return nsHtml5TreeOperation::Append(aNode, aParent, aBuilder);
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}
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MOZ_ASSERT(aBefore->GetParent() == aParent);
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ErrorResult rv;
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Document* ownerDoc = aParent->OwnerDoc();
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nsHtml5OtherDocUpdate update(ownerDoc, aBuilder->GetDocument());
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aParent->InsertChildBefore(aNode, aBefore, false, rv);
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if (!rv.Failed() && !ownerDoc->DOMNotificationsSuspended()) {
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aNode->SetParserHasNotified();
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MutationObservers::NotifyContentInserted(
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aParent, aNode, {MutationEffectOnScript::KeepTrustWorthiness});
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}
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return rv.StealNSResult();
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}
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// Detaches aNode from its old parent, if any, and reports whether it can be
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// inserted into aParent at all.
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static bool PrepareForInsertion(nsIContent* aNode, nsIContent* aParent,
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nsHtml5DocumentBuilder* aBuilder) {
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if (MOZ_UNLIKELY(aNode->GetParentNode())) {
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nsHtml5TreeOperation::Detach(aNode, aBuilder);
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if (MOZ_UNLIKELY(aNode->GetParentNode())) {
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// Can this happen? If it can, give up.
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nsHtml5TreeOperation::AbortNodeInsertion(aNode);
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return false;
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}
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}
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if (MOZ_UNLIKELY(!nsHtml5TreeOperation::CanInsert(aNode, aParent))) {
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nsHtml5TreeOperation::AbortNodeInsertion(aNode);
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return false;
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}
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return true;
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}
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bool nsHtml5TreeOperation::CanInsert(nsIContent* aNode, nsIContent* aParent) {
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return !aNode->HasChildren() || !aParent->IsInclusiveDescendantOf(aNode);
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}
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static MOZ_ALWAYS_INLINE nsresult
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InsertTextImpl(const char16_t* aBuffer, uint32_t aLength, nsIContent* aParent,
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nsIContent* aBefore, nsHtml5DocumentBuilder* aBuilder) {
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MOZ_ASSERT(!aBefore || aBefore->GetParent() == aParent);
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nsIContent* previousSibling =
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aBefore ? aBefore->GetPreviousSibling() : aParent->GetLastChild();
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if (previousSibling && previousSibling->IsText()) {
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nsHtml5OtherDocUpdate update(aParent->OwnerDoc(), aBuilder->GetDocument());
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return nsHtml5TreeOperation::AppendTextToTextNode(
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aBuffer, aLength, previousSibling->GetAsText(), aBuilder);
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}
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nsNodeInfoManager* nodeInfoManager = aParent->NodeInfoManager();
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RefPtr<nsTextNode> text = new (nodeInfoManager) nsTextNode(nodeInfoManager);
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MOZ_ASSERT(text, "Infallible malloc failed?");
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nsresult rv = text->SetText(aBuffer, aLength, false);
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NS_ENSURE_SUCCESS(rv, rv);
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return InsertNodeBefore(text, aParent, aBefore, aBuilder);
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}
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static MOZ_ALWAYS_INLINE nsresult
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InsertCommentImpl(nsIContent* aParent, char16_t* aBuffer, int32_t aLength,
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nsIContent* aBefore, nsHtml5DocumentBuilder* aBuilder) {
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nsNodeInfoManager* nodeInfoManager = aParent->NodeInfoManager();
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RefPtr<Comment> comment = new (nodeInfoManager) Comment(nodeInfoManager);
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MOZ_ASSERT(comment, "Infallible malloc failed?");
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nsresult rv = comment->SetText(aBuffer, aLength, false);
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NS_ENSURE_SUCCESS(rv, rv);
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return InsertNodeBefore(comment, aParent, aBefore, aBuilder);
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}
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nsresult nsHtml5TreeOperation::AppendTextToTextNode(
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const char16_t* aBuffer, uint32_t aLength, Text* aTextNode,
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nsHtml5DocumentBuilder* aBuilder) {
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MOZ_ASSERT(aTextNode, "Got null text node.");
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MOZ_ASSERT(aBuilder);
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MOZ_ASSERT(aBuilder->IsInDocUpdate());
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uint32_t oldLength = aTextNode->TextLength();
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CharacterDataChangeInfo info = {true, oldLength, oldLength, aLength,
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MutationEffectOnScript::KeepTrustWorthiness};
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MutationObservers::NotifyCharacterDataWillChange(aTextNode, info);
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nsresult rv = aTextNode->AppendText(aBuffer, aLength, false);
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NS_ENSURE_SUCCESS(rv, rv);
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MutationObservers::NotifyCharacterDataChanged(aTextNode, info);
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return rv;
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}
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nsresult nsHtml5TreeOperation::AppendText(const char16_t* aBuffer,
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uint32_t aLength, nsIContent* aParent,
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nsHtml5DocumentBuilder* aBuilder) {
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return InsertTextImpl(aBuffer, aLength, aParent, nullptr, aBuilder);
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}
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nsresult nsHtml5TreeOperation::InsertTextBefore(
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const char16_t* aBuffer, uint32_t aLength, nsIContent* aParent,
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nsIContent* aBefore, nsHtml5DocumentBuilder* aBuilder) {
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return InsertTextImpl(aBuffer, aLength, aParent, aBefore, aBuilder);
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}
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nsresult nsHtml5TreeOperation::Append(nsIContent* aNode, nsIContent* aParent,
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nsHtml5DocumentBuilder* aBuilder) {
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MOZ_ASSERT(aBuilder);
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MOZ_ASSERT(aBuilder->IsInDocUpdate());
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MOZ_ASSERT(!aNode->GetParentNode());
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ErrorResult rv;
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Document* ownerDoc = aParent->OwnerDoc();
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nsHtml5OtherDocUpdate update(ownerDoc, aBuilder->GetDocument());
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aParent->AppendChildTo(aNode, false, rv);
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if (!rv.Failed() && !ownerDoc->DOMNotificationsSuspended()) {
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aNode->SetParserHasNotified();
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MutationObservers::NotifyContentAppended(
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aParent, aNode, {MutationEffectOnScript::KeepTrustWorthiness});
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}
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return rv.StealNSResult();
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}
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nsresult nsHtml5TreeOperation::Append(nsIContent* aNode, nsIContent* aParent,
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FromParser aFromParser,
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nsHtml5DocumentBuilder* aBuilder) {
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if (!PrepareForInsertion(aNode, aParent, aBuilder)) {
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return NS_OK;
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}
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Maybe<AutoSetThrowOnDynamicMarkupInsertionCounter>
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throwOnDynamicMarkupInsertionCounter;
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Maybe<nsHtml5AutoPauseUpdate> autoPause;
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Maybe<AutoCEReaction> autoCEReaction;
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DocGroup* docGroup = aParent->OwnerDoc()->GetDocGroup();
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if (docGroup && aFromParser != FROM_PARSER_FRAGMENT) {
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autoCEReaction.emplace(docGroup->CustomElementReactionsStack(), nullptr);
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}
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nsresult rv = Append(aNode, aParent, aBuilder);
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// Pause the parser only when there are reactions to be invoked to avoid
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// pausing parsing too aggressive.
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if (autoCEReaction.isSome() && docGroup &&
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docGroup->CustomElementReactionsStack()
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->IsElementQueuePushedForCurrentRecursionDepth()) {
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throwOnDynamicMarkupInsertionCounter.emplace(aBuilder->GetDocument());
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autoPause.emplace(aBuilder);
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}
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return rv;
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}
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nsresult nsHtml5TreeOperation::InsertBefore(nsIContent* aNode,
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nsIContent* aParent,
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nsIContent* aBefore,
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nsHtml5DocumentBuilder* aBuilder) {
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if (!PrepareForInsertion(aNode, aParent, aBuilder)) {
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return NS_OK;
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}
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return InsertNodeBefore(aNode, aParent, aBefore, aBuilder);
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}
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nsresult nsHtml5TreeOperation::AppendToDocument(
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nsIContent* aNode, nsHtml5DocumentBuilder* aBuilder) {
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MOZ_ASSERT(aBuilder);
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MOZ_ASSERT(aBuilder->GetDocument() == aNode->OwnerDoc());
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MOZ_ASSERT(aBuilder->IsInDocUpdate());
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if (MOZ_UNLIKELY(aNode->GetParentNode())) {
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Detach(aNode, aBuilder);
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if (MOZ_UNLIKELY(aNode->GetParentNode())) {
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// Can this happen? If it can, give up.
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AbortNodeInsertion(aNode);
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return NS_OK;
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}
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}
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ErrorResult rv;
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Document* doc = aBuilder->GetDocument();
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doc->AppendChildTo(aNode, false, rv);
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if (rv.ErrorCodeIs(NS_ERROR_DOM_HIERARCHY_REQUEST_ERR)) {
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aNode->SetParserHasNotified();
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AbortNodeInsertion(aNode);
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return NS_OK;
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}
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if (rv.Failed()) {
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AbortNodeInsertion(aNode);
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return rv.StealNSResult();
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}
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if (!doc->DOMNotificationsSuspended()) {
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aNode->SetParserHasNotified();
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MutationObservers::NotifyContentInserted(
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doc, aNode, {MutationEffectOnScript::KeepTrustWorthiness});
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}
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NS_ASSERTION(!nsContentUtils::IsSafeToRunScript(),
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"Someone forgot to block scripts");
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if (aNode->IsElement()) {
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nsContentUtils::AddScriptRunner(
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MakeAndAddRef<nsDocElementCreatedNotificationRunner>(doc));
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}
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return NS_OK;
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}
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// "If the adjusted insertion location's last table has a parent node, then let
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// the adjusted insertion location be inside that parent, immediately before
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// last table." Any parent node qualifies, including the DocumentFragment that
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// roots a fragment parse.
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static bool IsPossibleFosterParent(nsINode* aNode) {
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return aNode && (aNode->IsElement() || aNode->IsDocumentFragment());
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}
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void nsHtml5TreeOperation::Detach(nsIContent* aNode,
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nsHtml5DocumentBuilder* aBuilder) {
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MOZ_ASSERT(aBuilder);
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MOZ_ASSERT(aBuilder->IsInDocUpdate());
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nsCOMPtr<nsINode> parent = aNode->GetParentNode();
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if (parent) {
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nsHtml5OtherDocUpdate update(parent->OwnerDoc(), aBuilder->GetDocument());
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parent->RemoveChildNode(aNode, true, nullptr, nullptr,
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MutationEffectOnScript::KeepTrustWorthiness);
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}
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}
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nsresult nsHtml5TreeOperation::AppendChildrenToNewParent(
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nsIContent* aNode, nsIContent* aParent, nsHtml5DocumentBuilder* aBuilder) {
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MOZ_ASSERT(aBuilder);
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MOZ_ASSERT(aBuilder->IsInDocUpdate());
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nsHtml5OtherDocUpdate update(aParent->OwnerDoc(), aBuilder->GetDocument());
|
|
|
|
bool didAppend = false;
|
|
while (aNode->HasChildren()) {
|
|
nsCOMPtr<nsIContent> child = aNode->GetFirstChild();
|
|
aNode->RemoveChildNode(child, true, nullptr, nullptr,
|
|
MutationEffectOnScript::KeepTrustWorthiness);
|
|
|
|
if (MOZ_UNLIKELY(aParent->IsInclusiveDescendantOf(child))) {
|
|
continue;
|
|
}
|
|
|
|
ErrorResult rv;
|
|
aParent->AppendChildTo(child, false, rv);
|
|
if (rv.Failed()) {
|
|
AbortNodeInsertion(aNode);
|
|
return rv.StealNSResult();
|
|
}
|
|
didAppend = true;
|
|
}
|
|
if (didAppend) {
|
|
MutationObservers::NotifyContentAppended(
|
|
aParent, aParent->GetLastChild(),
|
|
{MutationEffectOnScript::KeepTrustWorthiness});
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult nsHtml5TreeOperation::FosterParent(nsIContent* aNode,
|
|
nsIContent* aParent,
|
|
nsIContent* aTable,
|
|
nsHtml5DocumentBuilder* aBuilder) {
|
|
MOZ_ASSERT(aBuilder);
|
|
MOZ_ASSERT(aBuilder->IsInDocUpdate());
|
|
if (MOZ_UNLIKELY(aNode->GetParentNode())) {
|
|
Detach(aNode, aBuilder);
|
|
if (MOZ_UNLIKELY(aNode->GetParentNode())) {
|
|
// Can this happen? If it can, give up.
|
|
AbortNodeInsertion(aNode);
|
|
return NS_OK;
|
|
}
|
|
}
|
|
|
|
nsIContent* foster = aTable->GetParent();
|
|
|
|
if (IsPossibleFosterParent(foster)) {
|
|
if (MOZ_UNLIKELY(aNode->HasChildren()) &&
|
|
aTable->IsInclusiveDescendantOf(aNode)) {
|
|
// "If it is not possible to insert element at the adjusted insertion
|
|
// location, abort these steps."
|
|
// But see https://github.com/whatwg/html/issues/12494
|
|
AbortNodeInsertion(aNode);
|
|
return NS_OK;
|
|
}
|
|
|
|
nsHtml5OtherDocUpdate update(foster->OwnerDoc(), aBuilder->GetDocument());
|
|
|
|
ErrorResult rv;
|
|
foster->InsertChildBefore(aNode, aTable, false, rv);
|
|
if (rv.Failed()) {
|
|
AbortNodeInsertion(aNode);
|
|
return rv.StealNSResult();
|
|
}
|
|
|
|
MutationObservers::NotifyContentInserted(
|
|
foster, aNode, {MutationEffectOnScript::KeepTrustWorthiness});
|
|
return NS_OK;
|
|
}
|
|
|
|
if (MOZ_UNLIKELY(aNode->HasChildren()) &&
|
|
aParent->IsInclusiveDescendantOf(aNode)) {
|
|
// "If it is not possible to insert element at the adjusted insertion
|
|
// location, abort these steps."
|
|
// But see https://github.com/whatwg/html/issues/12494
|
|
AbortNodeInsertion(aNode);
|
|
return NS_OK;
|
|
}
|
|
|
|
return Append(aNode, aParent, aBuilder);
|
|
}
|
|
|
|
nsresult nsHtml5TreeOperation::AddAttributes(nsIContent* aNode,
|
|
nsHtml5HtmlAttributes* aAttributes,
|
|
nsHtml5DocumentBuilder* aBuilder) {
|
|
MOZ_ASSERT(aNode->IsAnyOfHTMLElements(nsGkAtoms::body, nsGkAtoms::html));
|
|
|
|
Element* node = aNode->AsElement();
|
|
nsHtml5OtherDocUpdate update(node->OwnerDoc(), aBuilder->GetDocument());
|
|
|
|
for (nsHtml5AttributeEntry& entry : *aAttributes) {
|
|
nsHtml5String& val = entry.ValueRef();
|
|
nsAtom* localName = entry.NameHTML();
|
|
if (!node->HasAttr(kNameSpaceID_None, localName) &&
|
|
(localName != nsGkAtoms::nonce)) {
|
|
// If value is already an atom, use it directly to avoid string
|
|
// allocation.
|
|
nsAtom* valAtom = val.MaybeAsAtom();
|
|
if (valAtom) {
|
|
node->SetAttr(kNameSpaceID_None, localName, nullptr, valAtom, nullptr,
|
|
true);
|
|
} else {
|
|
nsString value; // Not Auto, because using it to hold nsStringBuffer*
|
|
// Safety: OK to call, because val is a reference into the attribute
|
|
// holder, so a call on `val` is a call on an owning instance of
|
|
// `nsHtml5String`.
|
|
val.MoveToString(value);
|
|
node->SetAttr(kNameSpaceID_None, localName, nullptr, value, true);
|
|
}
|
|
// XXX what to do with nsresult?
|
|
}
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
void nsHtml5TreeOperation::SetHTMLElementAttributes(
|
|
Element* aElement, nsHtml5HtmlAttributes* aAttributes) {
|
|
int32_t len = aAttributes->getLength();
|
|
if (!len) {
|
|
return;
|
|
}
|
|
aElement->ReserveAttributeCount((uint32_t)len);
|
|
if (aAttributes->getDuplicateAttributeError()) {
|
|
aElement->SetParserHadDuplicateAttributeError();
|
|
}
|
|
for (nsHtml5AttributeEntry& entry : *aAttributes) {
|
|
nsHtml5String& val = entry.ValueRef();
|
|
nsAtom* localName = entry.NameHTML();
|
|
if (localName == nsGkAtoms::_class) {
|
|
nsAtom* klass = val.MaybeAsAtom();
|
|
if (klass) {
|
|
aElement->SetClassAttrFromParser(klass);
|
|
continue;
|
|
}
|
|
}
|
|
|
|
// If value is already an atom, use it directly to avoid string allocation.
|
|
nsAtom* valAtom = val.MaybeAsAtom();
|
|
if (valAtom) {
|
|
aElement->SetAttr(kNameSpaceID_None, localName, nullptr, valAtom, nullptr,
|
|
false);
|
|
} else {
|
|
nsString value; // Not Auto, because using it to hold nsStringBuffer*
|
|
// Safety: OK to call, because val is a reference into the attribute
|
|
// holder, so a call on `val` is a call on an owning instance of
|
|
// `nsHtml5String`.
|
|
val.MoveToString(value);
|
|
aElement->SetAttr(kNameSpaceID_None, localName, nullptr, value, false);
|
|
}
|
|
}
|
|
#ifdef DEBUG
|
|
aAttributes->MarkAsMovedFrom();
|
|
#endif
|
|
}
|
|
|
|
void nsHtml5TreeOperation::SetHTMLElementAttributesFast(
|
|
Element* aElement, nsHtml5HtmlAttributes* aAttributes) {
|
|
int32_t len = aAttributes->getLength();
|
|
if (!len) {
|
|
return;
|
|
}
|
|
aElement->ReserveAttributeCount((uint32_t)len);
|
|
if (aAttributes->getDuplicateAttributeError()) {
|
|
aElement->SetParserHadDuplicateAttributeError();
|
|
}
|
|
// Element::SetNoNameSpaceAttrOnNewlyCreatedElement() may call AfterSetAttr
|
|
// and its callers assume that the script is blocked.
|
|
const nsAutoScriptBlocker scriptBlocker;
|
|
|
|
// This boolean is state that is shared between the
|
|
// SetNoNameSpaceAttrOnNewlyCreatedElement calls so that
|
|
// if one call schedules pending mapped attribute evaluation,
|
|
// subsequent calls no longer have to check for mapped attribute
|
|
// or schedule evaluation.
|
|
bool isPendingMappedAttributeEvaluation = false;
|
|
for (nsHtml5AttributeEntry& entry : *aAttributes) {
|
|
aElement->SetNoNameSpaceAttrOnNewlyCreatedElement(
|
|
entry.ForgetNameHTML(), entry.ValueRef(),
|
|
isPendingMappedAttributeEvaluation, scriptBlocker);
|
|
}
|
|
#ifdef DEBUG
|
|
aAttributes->MarkAsMovedFrom();
|
|
#endif
|
|
}
|
|
|
|
nsIContent* nsHtml5TreeOperation::CreateHTMLElement(
|
|
nsAtom* aName, nsHtml5HtmlAttributes* aAttributes, FromParser aFromParser,
|
|
nsNodeInfoManager* aNodeInfoManager, nsHtml5DocumentBuilder* aBuilder,
|
|
HTMLContentCreatorFunction aCreator, nsINode* aIntendedParent,
|
|
Maybe<RefPtr<CustomElementRegistry>> aContextRegistry) {
|
|
// https://html.spec.whatwg.org/#create-an-element-for-the-token
|
|
// 1. If the active speculative HTML parser is not null, then return the
|
|
// result of creating a speculative mock element given namespace, token's tag
|
|
// name, and token's attributes.
|
|
// 2. Otherwise, optionally create a speculative mock element given namespace,
|
|
// token's tag name, and token's attributes.
|
|
// (Speculative mocks handled elsewhere).
|
|
RefPtr<NodeInfo> nodeInfo = aNodeInfoManager->GetNodeInfo(
|
|
aName, nullptr, kNameSpaceID_XHTML, nsINode::ELEMENT_NODE);
|
|
NS_ASSERTION(nodeInfo, "Got null nodeinfo.");
|
|
|
|
// 3. Let document be intendedParent's node document.
|
|
Document* document = nodeInfo->GetDocument();
|
|
|
|
// 4. Let localName be token's tag name.
|
|
// (this is `aName`).
|
|
|
|
// 5. Let is be the value of the "is" attribute in token, if such an attribute
|
|
// exists; otherwise null.
|
|
RefPtr<nsAtom> isAtom;
|
|
if (aAttributes) {
|
|
nsHtml5String is = aAttributes->getValue(nsHtml5AttributeName::ATTR_IS);
|
|
if (is) {
|
|
nsAutoString isValue;
|
|
is.ToString(isValue);
|
|
isAtom = NS_Atomize(isValue);
|
|
}
|
|
}
|
|
|
|
// 6. Let registry be the result of looking up a custom element registry given
|
|
// intendedParent.
|
|
//
|
|
// (intendedParent may specify its own registry (the common case during
|
|
// fragment parsing). It might specify a scoped or "null" registry
|
|
// (Some(nullptr)). Both of these are valid and must be propagated to the
|
|
// node. In some cases, intendedParent will have an unspecified "global"
|
|
// registry (Nothing()); in these cases we assume registry from context and
|
|
// fall back to aContextRegistry).
|
|
Maybe<RefPtr<CustomElementRegistry>> customElementRegistry =
|
|
nsContentUtils::GetCustomElementRegistry(aIntendedParent);
|
|
if (customElementRegistry.isNothing() &&
|
|
document == aBuilder->GetDocument()) {
|
|
customElementRegistry = std::move(aContextRegistry);
|
|
}
|
|
|
|
// https://github.com/whatwg/html/pull/12000
|
|
// https://html.spec.whatwg.org/#create-an-element-for-the-token
|
|
// Step 6: "If token has a customelementregistry attribute, then set registry
|
|
// to null." This opts the element (and its descendants, which inherit via
|
|
// intendedParent) out of all registries, overriding any inherited or context
|
|
// registry.
|
|
if (aAttributes &&
|
|
StaticPrefs::dom_scoped_custom_element_registries_enabled() &&
|
|
aAttributes->contains(nsHtml5AttributeName::ATTR_CUSTOMELEMENTREGISTRY)) {
|
|
customElementRegistry = Some(RefPtr<CustomElementRegistry>(nullptr));
|
|
}
|
|
|
|
// 7. Let definition be the result of looking up a custom element definition
|
|
// given registry, namespace, localName, and is.
|
|
const bool isCustomElement = aCreator == NS_NewCustomElement || isAtom;
|
|
CustomElementDefinition* customElementDefinition = nullptr;
|
|
|
|
/// customElementDefinition is only used if willExecuteScript is true,
|
|
/// which will only be the case if parser is not in fragment parsing.
|
|
/// Therefore we can skip looking up the definition here when in fragment
|
|
/// parsing, as it's wasted work.
|
|
if (isCustomElement && aFromParser != FROM_PARSER_FRAGMENT) {
|
|
RefPtr<nsAtom> tagAtom = nodeInfo->NameAtom();
|
|
RefPtr<nsAtom> typeAtom =
|
|
aCreator == NS_NewCustomElement ? tagAtom : isAtom;
|
|
|
|
MOZ_ASSERT(nodeInfo->NameAtom()->Equals(nodeInfo->LocalName()));
|
|
// https://html.spec.whatwg.org/#create-an-element-for-the-token
|
|
// Step 7: "Let definition be the result of looking up a custom element
|
|
// definition given registry, namespace, localName, and is."
|
|
// https://html.spec.whatwg.org/#look-up-a-custom-element-definition
|
|
// Step 1: "If registry is null, then return null."
|
|
if (!(customElementRegistry.isSome() && !customElementRegistry.value())) {
|
|
customElementDefinition = nsContentUtils::LookupCustomElementDefinition(
|
|
document, nodeInfo->NameAtom(), nodeInfo->NamespaceID(), typeAtom);
|
|
}
|
|
}
|
|
|
|
// 8. Let willExecuteScript be true if definition is non-null and the parser
|
|
// was not created as part of the HTML fragment parsing algorithm; otherwise
|
|
// false.
|
|
const bool willExecuteScript =
|
|
customElementDefinition && aFromParser != FROM_PARSER_FRAGMENT;
|
|
|
|
auto DoCreateElement = [&](HTMLContentCreatorFunction aCreator) -> Element* {
|
|
// 10. Let element be the result of creating an element given document,
|
|
// localName, namespace, null, is, willExecuteScript, and registry.
|
|
nsCOMPtr<Element> newElement;
|
|
if (aCreator) {
|
|
newElement = aCreator(nodeInfo.forget(), aFromParser);
|
|
} else {
|
|
NS_NewHTMLElement(getter_AddRefs(newElement), nodeInfo.forget(),
|
|
aFromParser, isAtom, customElementDefinition,
|
|
customElementRegistry);
|
|
}
|
|
|
|
MOZ_ASSERT(newElement, "Element creation created null pointer.");
|
|
Element* element = newElement.get();
|
|
aBuilder->HoldElement(newElement.forget());
|
|
|
|
// When a custom element registry is provided (e.g. from fragment parsing
|
|
// with a scoped registry), assign it to the element. NS_NewHTMLElement
|
|
// handles this internally via NewXULOrHTMLElement, but elements created
|
|
// directly via aCreator (built-in elements like <span>, <div>) bypass
|
|
// that path and need the registry set explicitly.
|
|
if (aCreator && customElementRegistry.isSome()) {
|
|
if (RefPtr<CustomElementRegistry> registry =
|
|
customElementRegistry.value()) {
|
|
element->SetCustomElementRegistry(registry);
|
|
} else {
|
|
element->SetNullCustomElementRegistry();
|
|
}
|
|
}
|
|
|
|
if (auto* linkStyle = LinkStyle::FromNode(*element)) {
|
|
linkStyle->DisableUpdates();
|
|
}
|
|
|
|
if (!aAttributes) {
|
|
return element;
|
|
}
|
|
|
|
// 11. Append each attribute in the given token to element.
|
|
//
|
|
// aCreator is nullptr if this is a custom element. We can use
|
|
// the fast path when we have a non-custom (HTML) element.
|
|
if (aCreator) {
|
|
SetHTMLElementAttributesFast(element, aAttributes);
|
|
} else {
|
|
SetHTMLElementAttributes(element, aAttributes);
|
|
}
|
|
return element;
|
|
};
|
|
|
|
// 9. If willExecuteScript is true:
|
|
// 12. If willExecuteScript is true:
|
|
if (willExecuteScript) {
|
|
// 9.1. Increment document's throw-on-dynamic-markup-insertion counter.
|
|
AutoSetThrowOnDynamicMarkupInsertionCounter
|
|
throwOnDynamicMarkupInsertionCounter(aBuilder->GetDocument());
|
|
nsHtml5AutoPauseUpdate autoPauseContentUpdate(aBuilder);
|
|
// 9.2. If the JavaScript execution context stack is empty, then perform a
|
|
// microtask checkpoint.
|
|
{
|
|
nsAutoMicroTask mt;
|
|
}
|
|
// 9.3. Push a new element queue onto document's relevant agent's custom
|
|
// element reactions stack.
|
|
// 12.1. Let queue be the result of popping from document's relevant agent's
|
|
// custom element reactions stack. (This will be the same element queue as
|
|
// was pushed above.)
|
|
// 12.2. Invoke custom element reactions in queue.
|
|
// 12.3. Decrement document's throw-on-dynamic-markup-insertion counter.
|
|
AutoCEReaction autoCEReaction(
|
|
document->GetDocGroup()->CustomElementReactionsStack(), nullptr);
|
|
return DoCreateElement(nullptr);
|
|
}
|
|
return DoCreateElement(isCustomElement ? nullptr : aCreator);
|
|
}
|
|
|
|
nsIContent* nsHtml5TreeOperation::CreateSVGElement(
|
|
nsAtom* aName, nsHtml5HtmlAttributes* aAttributes, FromParser aFromParser,
|
|
nsNodeInfoManager* aNodeInfoManager, nsHtml5DocumentBuilder* aBuilder,
|
|
SVGContentCreatorFunction aCreator) {
|
|
nsCOMPtr<nsIContent> newElement;
|
|
if (MOZ_LIKELY(aNodeInfoManager->SVGEnabled())) {
|
|
RefPtr<NodeInfo> nodeInfo = aNodeInfoManager->GetNodeInfo(
|
|
aName, nullptr, kNameSpaceID_SVG, nsINode::ELEMENT_NODE);
|
|
MOZ_ASSERT(nodeInfo, "Got null nodeinfo.");
|
|
|
|
DebugOnly<nsresult> rv =
|
|
aCreator(getter_AddRefs(newElement), nodeInfo.forget(), aFromParser);
|
|
MOZ_ASSERT(NS_SUCCEEDED(rv) && newElement);
|
|
} else {
|
|
RefPtr<NodeInfo> nodeInfo = aNodeInfoManager->GetNodeInfo(
|
|
aName, nullptr, kNameSpaceID_disabled_SVG, nsINode::ELEMENT_NODE);
|
|
MOZ_ASSERT(nodeInfo, "Got null nodeinfo.");
|
|
|
|
// The mismatch between NS_NewXMLElement and SVGContentCreatorFunction
|
|
// argument types is annoying.
|
|
nsCOMPtr<Element> xmlElement;
|
|
DebugOnly<nsresult> rv =
|
|
NS_NewXMLElement(getter_AddRefs(xmlElement), nodeInfo.forget());
|
|
MOZ_ASSERT(NS_SUCCEEDED(rv) && xmlElement);
|
|
newElement = xmlElement;
|
|
}
|
|
|
|
Element* newContent = newElement->AsElement();
|
|
aBuilder->HoldElement(newElement.forget());
|
|
|
|
if (MOZ_UNLIKELY(aName == nsGkAtoms::style)) {
|
|
if (auto* linkStyle = LinkStyle::FromNode(*newContent)) {
|
|
linkStyle->DisableUpdates();
|
|
}
|
|
}
|
|
|
|
if (!aAttributes) {
|
|
return newContent;
|
|
}
|
|
int32_t len = aAttributes->getLength();
|
|
if (!len) {
|
|
return newContent;
|
|
}
|
|
|
|
newContent->ReserveAttributeCount((uint32_t)len);
|
|
|
|
if (aAttributes->getDuplicateAttributeError()) {
|
|
newContent->SetParserHadDuplicateAttributeError();
|
|
}
|
|
|
|
for (nsHtml5AttributeEntry& entry : *aAttributes) {
|
|
nsHtml5String& val = entry.ValueRef();
|
|
auto triple = entry.NameSVG();
|
|
if (triple.mLocal == nsGkAtoms::_class) {
|
|
nsAtom* klass = val.MaybeAsAtom();
|
|
if (klass) {
|
|
newContent->SetClassAttrFromParser(klass);
|
|
continue;
|
|
}
|
|
}
|
|
|
|
// If value is already an atom, use it directly to avoid string allocation.
|
|
nsAtom* valAtom = val.MaybeAsAtom();
|
|
if (valAtom) {
|
|
newContent->SetAttr(triple.mNamespace, triple.mLocal, triple.mPrefix,
|
|
valAtom, nullptr, false);
|
|
} else {
|
|
nsString value; // Not Auto, because using it to hold nsStringBuffer*
|
|
// Safety: OK to call, because val is a reference into the attribute
|
|
// holder, so a call on `val` is a call on an owning instance of
|
|
// `nsHtml5String`.
|
|
val.MoveToString(value);
|
|
newContent->SetAttr(triple.mNamespace, triple.mLocal, triple.mPrefix,
|
|
value, false);
|
|
}
|
|
}
|
|
#ifdef DEBUG
|
|
aAttributes->MarkAsMovedFrom();
|
|
#endif
|
|
return newContent;
|
|
}
|
|
|
|
nsIContent* nsHtml5TreeOperation::CreateMathMLElement(
|
|
nsAtom* aName, nsHtml5HtmlAttributes* aAttributes,
|
|
nsNodeInfoManager* aNodeInfoManager, nsHtml5DocumentBuilder* aBuilder) {
|
|
nsCOMPtr<Element> newElement;
|
|
if (MOZ_LIKELY(aNodeInfoManager->MathMLEnabled())) {
|
|
RefPtr<NodeInfo> nodeInfo = aNodeInfoManager->GetNodeInfo(
|
|
aName, nullptr, kNameSpaceID_MathML, nsINode::ELEMENT_NODE);
|
|
NS_ASSERTION(nodeInfo, "Got null nodeinfo.");
|
|
|
|
DebugOnly<nsresult> rv =
|
|
NS_NewMathMLElement(getter_AddRefs(newElement), nodeInfo.forget());
|
|
MOZ_ASSERT(NS_SUCCEEDED(rv) && newElement);
|
|
} else {
|
|
RefPtr<NodeInfo> nodeInfo = aNodeInfoManager->GetNodeInfo(
|
|
aName, nullptr, kNameSpaceID_disabled_MathML, nsINode::ELEMENT_NODE);
|
|
NS_ASSERTION(nodeInfo, "Got null nodeinfo.");
|
|
|
|
DebugOnly<nsresult> rv =
|
|
NS_NewXMLElement(getter_AddRefs(newElement), nodeInfo.forget());
|
|
MOZ_ASSERT(NS_SUCCEEDED(rv) && newElement);
|
|
}
|
|
|
|
Element* newContent = newElement;
|
|
aBuilder->HoldElement(newElement.forget());
|
|
|
|
if (!aAttributes) {
|
|
return newContent;
|
|
}
|
|
int32_t len = aAttributes->getLength();
|
|
if (!len) {
|
|
return newContent;
|
|
}
|
|
|
|
newContent->ReserveAttributeCount((uint32_t)len);
|
|
|
|
if (aAttributes->getDuplicateAttributeError()) {
|
|
newContent->SetParserHadDuplicateAttributeError();
|
|
}
|
|
|
|
for (nsHtml5AttributeEntry& entry : *aAttributes) {
|
|
nsHtml5String& val = entry.ValueRef();
|
|
auto triple = entry.NameMathML();
|
|
if (triple.mLocal == nsGkAtoms::_class) {
|
|
nsAtom* klass = val.MaybeAsAtom();
|
|
if (klass) {
|
|
newContent->SetClassAttrFromParser(klass);
|
|
continue;
|
|
}
|
|
}
|
|
|
|
// If value is already an atom, use it directly to avoid string allocation.
|
|
nsAtom* valAtom = val.MaybeAsAtom();
|
|
if (valAtom) {
|
|
newContent->SetAttr(triple.mNamespace, triple.mLocal, triple.mPrefix,
|
|
valAtom, nullptr, false);
|
|
} else {
|
|
nsString value; // Not Auto, because using it to hold nsStringBuffer*
|
|
// Safety: OK to call, because val is a reference into the attribute
|
|
// holder, so a call on `val` is a call on an owning instance of
|
|
// `nsHtml5String`.
|
|
val.MoveToString(value);
|
|
newContent->SetAttr(triple.mNamespace, triple.mLocal, triple.mPrefix,
|
|
value, false);
|
|
}
|
|
}
|
|
#ifdef DEBUG
|
|
aAttributes->MarkAsMovedFrom();
|
|
#endif
|
|
return newContent;
|
|
}
|
|
|
|
void nsHtml5TreeOperation::SetFormElement(nsIContent* aNode, nsIContent* aForm,
|
|
nsIContent* aParent) {
|
|
if (aForm->SubtreeRoot() != aParent->SubtreeRoot()) {
|
|
return;
|
|
}
|
|
|
|
RefPtr formElement = HTMLFormElement::FromNodeOrNull(aForm);
|
|
NS_ASSERTION(formElement,
|
|
"The form element doesn't implement HTMLFormElement.");
|
|
nsCOMPtr<nsIFormControl> formControl = nsIFormControl::FromNodeOrNull(aNode);
|
|
if (formControl &&
|
|
formControl->ControlType() !=
|
|
FormControlType::FormAssociatedCustomElement &&
|
|
!formControl->GetFormInternal() &&
|
|
!aNode->AsElement()->HasAttr(nsGkAtoms::form)) {
|
|
formControl->SetForm(formElement);
|
|
} else if (auto* image = HTMLImageElement::FromNodeOrNull(aNode)) {
|
|
if (!image->GetFormInternal()) {
|
|
image->SetForm(formElement);
|
|
}
|
|
}
|
|
}
|
|
|
|
nsresult nsHtml5TreeOperation::FosterParentText(
|
|
nsIContent* aStackParent, char16_t* aBuffer, uint32_t aLength,
|
|
nsIContent* aTable, nsHtml5DocumentBuilder* aBuilder) {
|
|
MOZ_ASSERT(aBuilder);
|
|
MOZ_ASSERT(aBuilder->IsInDocUpdate());
|
|
nsresult rv = NS_OK;
|
|
nsIContent* foster = aTable->GetParent();
|
|
|
|
if (IsPossibleFosterParent(foster)) {
|
|
nsHtml5OtherDocUpdate update(foster->OwnerDoc(), aBuilder->GetDocument());
|
|
|
|
nsIContent* previousSibling = aTable->GetPreviousSibling();
|
|
if (previousSibling && previousSibling->IsText()) {
|
|
return AppendTextToTextNode(aBuffer, aLength,
|
|
previousSibling->GetAsText(), aBuilder);
|
|
}
|
|
|
|
nsNodeInfoManager* nodeInfoManager = aStackParent->NodeInfoManager();
|
|
RefPtr<nsTextNode> text = new (nodeInfoManager) nsTextNode(nodeInfoManager);
|
|
NS_ASSERTION(text, "Infallible malloc failed?");
|
|
rv = text->SetText(aBuffer, aLength, false);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
ErrorResult error;
|
|
foster->InsertChildBefore(text, aTable, false, error);
|
|
if (error.Failed()) {
|
|
return error.StealNSResult();
|
|
}
|
|
|
|
MutationObservers::NotifyContentInserted(
|
|
foster, text, {MutationEffectOnScript::KeepTrustWorthiness});
|
|
return rv;
|
|
}
|
|
|
|
return AppendText(aBuffer, aLength, aStackParent, aBuilder);
|
|
}
|
|
|
|
nsresult nsHtml5TreeOperation::AppendComment(nsIContent* aParent,
|
|
char16_t* aBuffer, int32_t aLength,
|
|
nsHtml5DocumentBuilder* aBuilder) {
|
|
return InsertCommentImpl(aParent, aBuffer, aLength, nullptr, aBuilder);
|
|
}
|
|
|
|
nsresult nsHtml5TreeOperation::InsertCommentBefore(
|
|
nsIContent* aParent, char16_t* aBuffer, int32_t aLength,
|
|
nsIContent* aBefore, nsHtml5DocumentBuilder* aBuilder) {
|
|
return InsertCommentImpl(aParent, aBuffer, aLength, aBefore, aBuilder);
|
|
}
|
|
|
|
nsresult nsHtml5TreeOperation::AppendCommentToDocument(
|
|
char16_t* aBuffer, int32_t aLength, nsHtml5DocumentBuilder* aBuilder) {
|
|
RefPtr<Comment> comment = new (aBuilder->GetNodeInfoManager())
|
|
Comment(aBuilder->GetNodeInfoManager());
|
|
NS_ASSERTION(comment, "Infallible malloc failed?");
|
|
nsresult rv = comment->SetText(aBuffer, aLength, false);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
return AppendToDocument(comment, aBuilder);
|
|
}
|
|
|
|
nsresult nsHtml5TreeOperation::AppendDoctypeToDocument(
|
|
nsAtom* aName, const nsAString& aPublicId, const nsAString& aSystemId,
|
|
nsHtml5DocumentBuilder* aBuilder) {
|
|
// Adapted from nsXMLContentSink
|
|
// Create a new doctype node
|
|
RefPtr<DocumentType> docType =
|
|
NS_NewDOMDocumentType(aBuilder->GetNodeInfoManager(), aName, aPublicId,
|
|
aSystemId, VoidString());
|
|
return AppendToDocument(docType, aBuilder);
|
|
}
|
|
|
|
nsIContent* nsHtml5TreeOperation::GetDocumentFragmentForTemplate(
|
|
nsIContent* aNode) {
|
|
auto* tempElem = static_cast<HTMLTemplateElement*>(aNode);
|
|
return tempElem->Content();
|
|
}
|
|
|
|
void nsHtml5TreeOperation::SetDocumentFragmentForTemplate(
|
|
nsIContent* aNode, nsIContent* aDocumentFragment) {
|
|
auto* tempElem = static_cast<HTMLTemplateElement*>(aNode);
|
|
tempElem->SetContent(static_cast<DocumentFragment*>(aDocumentFragment));
|
|
}
|
|
|
|
nsIContent* nsHtml5TreeOperation::GetFosterParentForInsertBefore(
|
|
nsIContent* aTable) {
|
|
nsIContent* tableParent = aTable->GetParent();
|
|
return IsPossibleFosterParent(tableParent) ? tableParent : nullptr;
|
|
}
|
|
|
|
nsIContent* nsHtml5TreeOperation::GetFosterParent(nsIContent* aTable,
|
|
nsIContent* aStackParent) {
|
|
nsIContent* foster = GetFosterParentForInsertBefore(aTable);
|
|
return foster ? foster : aStackParent;
|
|
}
|
|
|
|
void nsHtml5TreeOperation::PreventScriptExecution(nsIContent* aNode) {
|
|
nsCOMPtr<nsIScriptElement> sele = do_QueryInterface(aNode);
|
|
if (sele) {
|
|
sele->PreventExecution();
|
|
} else {
|
|
MOZ_ASSERT(nsNameSpaceManager::GetInstance()->mSVGDisabled,
|
|
"Node didn't QI to script, but SVG wasn't disabled.");
|
|
}
|
|
}
|
|
|
|
void nsHtml5TreeOperation::DoneAddingChildren(nsIContent* aNode) {
|
|
aNode->DoneAddingChildren(aNode->HasParserNotified());
|
|
}
|
|
|
|
void nsHtml5TreeOperation::DoneCreatingElement(nsIContent* aNode) {
|
|
aNode->DoneCreatingElement();
|
|
}
|
|
|
|
void nsHtml5TreeOperation::SvgLoad(nsIContent* aNode) {
|
|
nsCOMPtr<nsIRunnable> event = new nsHtml5SVGLoadDispatcher(aNode);
|
|
if (NS_FAILED(aNode->OwnerDoc()->Dispatch(event.forget()))) {
|
|
NS_WARNING("failed to dispatch svg load dispatcher");
|
|
}
|
|
}
|
|
|
|
void nsHtml5TreeOperation::MarkMalformedIfScript(nsIContent* aNode) {
|
|
nsCOMPtr<nsIScriptElement> sele = do_QueryInterface(aNode);
|
|
if (sele) {
|
|
// Make sure to serialize this script correctly, for nice round tripping.
|
|
sele->SetIsMalformed();
|
|
}
|
|
}
|
|
|
|
nsresult nsHtml5TreeOperation::Perform(nsHtml5TreeOpExecutor* aBuilder,
|
|
nsIContent** aScriptElement,
|
|
bool* aInterrupted, bool* aStreamEnded) {
|
|
struct TreeOperationMatcher {
|
|
TreeOperationMatcher(nsHtml5TreeOpExecutor* aBuilder,
|
|
nsIContent** aScriptElement, bool* aInterrupted,
|
|
bool* aStreamEnded)
|
|
: mBuilder(aBuilder),
|
|
mScriptElement(aScriptElement),
|
|
mInterrupted(aInterrupted),
|
|
mStreamEnded(aStreamEnded) {}
|
|
|
|
nsHtml5TreeOpExecutor* mBuilder;
|
|
nsIContent** mScriptElement;
|
|
bool* mInterrupted;
|
|
bool* mStreamEnded;
|
|
|
|
nsresult operator()(const opAppend& aOperation) {
|
|
return Append(*(aOperation.mChild), *(aOperation.mParent),
|
|
aOperation.mFromNetwork, mBuilder);
|
|
}
|
|
|
|
nsresult operator()(const opDetach& aOperation) {
|
|
Detach(*(aOperation.mElement), mBuilder);
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult operator()(const opAppendChildrenToNewParent& aOperation) {
|
|
nsCOMPtr<nsIContent> node = *(aOperation.mOldParent);
|
|
nsIContent* parent = *(aOperation.mNewParent);
|
|
return AppendChildrenToNewParent(node, parent, mBuilder);
|
|
}
|
|
|
|
nsresult operator()(const opFosterParent& aOperation) {
|
|
nsIContent* node = *(aOperation.mChild);
|
|
nsIContent* parent = *(aOperation.mStackParent);
|
|
nsIContent* table = *(aOperation.mTable);
|
|
return FosterParent(node, parent, table, mBuilder);
|
|
}
|
|
|
|
nsresult operator()(const opAppendToDocument& aOperation) {
|
|
nsresult rv = AppendToDocument(*(aOperation.mContent), mBuilder);
|
|
mBuilder->PauseDocUpdate(mInterrupted);
|
|
return rv;
|
|
}
|
|
|
|
nsresult operator()(const opAddAttributes& aOperation) {
|
|
nsIContent* node = *(aOperation.mElement);
|
|
nsHtml5HtmlAttributes* attributes = aOperation.mAttributes;
|
|
return AddAttributes(node, attributes, mBuilder);
|
|
}
|
|
|
|
nsresult operator()(const nsHtml5DocumentMode& aMode) {
|
|
mBuilder->SetDocumentMode(aMode);
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult operator()(const opCreateHTMLElement& aOperation) {
|
|
nsIContent** target = aOperation.mContent;
|
|
HTMLContentCreatorFunction creator = aOperation.mCreator;
|
|
nsAtom* name = aOperation.mName;
|
|
nsHtml5HtmlAttributes* attributes = aOperation.mAttributes;
|
|
nsIContent* intendedParent =
|
|
aOperation.mIntendedParent ? *(aOperation.mIntendedParent) : nullptr;
|
|
|
|
// intendedParent == nullptr is a special case where the
|
|
// intended parent is the document.
|
|
nsNodeInfoManager* nodeInfoManager =
|
|
intendedParent ? intendedParent->NodeInfoManager()
|
|
: mBuilder->GetNodeInfoManager();
|
|
|
|
*target = CreateHTMLElement(name, attributes, aOperation.mFromNetwork,
|
|
nodeInfoManager, mBuilder, creator,
|
|
intendedParent, mozilla::Nothing());
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult operator()(const opCreateSVGElement& aOperation) {
|
|
nsIContent** target = aOperation.mContent;
|
|
SVGContentCreatorFunction creator = aOperation.mCreator;
|
|
nsAtom* name = aOperation.mName;
|
|
nsHtml5HtmlAttributes* attributes = aOperation.mAttributes;
|
|
nsIContent* intendedParent =
|
|
aOperation.mIntendedParent ? *(aOperation.mIntendedParent) : nullptr;
|
|
|
|
// intendedParent == nullptr is a special case where the
|
|
// intended parent is the document.
|
|
nsNodeInfoManager* nodeInfoManager =
|
|
intendedParent ? intendedParent->NodeInfoManager()
|
|
: mBuilder->GetNodeInfoManager();
|
|
|
|
*target = CreateSVGElement(name, attributes, aOperation.mFromNetwork,
|
|
nodeInfoManager, mBuilder, creator);
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult operator()(const opCreateMathMLElement& aOperation) {
|
|
nsIContent** target = aOperation.mContent;
|
|
nsAtom* name = aOperation.mName;
|
|
nsHtml5HtmlAttributes* attributes = aOperation.mAttributes;
|
|
nsIContent* intendedParent =
|
|
aOperation.mIntendedParent ? *(aOperation.mIntendedParent) : nullptr;
|
|
|
|
// intendedParent == nullptr is a special case where the
|
|
// intended parent is the document.
|
|
nsNodeInfoManager* nodeInfoManager =
|
|
intendedParent ? intendedParent->NodeInfoManager()
|
|
: mBuilder->GetNodeInfoManager();
|
|
|
|
*target =
|
|
CreateMathMLElement(name, attributes, nodeInfoManager, mBuilder);
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult operator()(const opSetFormElement& aOperation) {
|
|
SetFormElement(*(aOperation.mContent), *(aOperation.mFormElement),
|
|
*(aOperation.mIntendedParent));
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult operator()(const opAppendText& aOperation) {
|
|
nsIContent* parent = *aOperation.mParent;
|
|
char16_t* buffer = aOperation.mBuffer;
|
|
uint32_t length = aOperation.mLength;
|
|
return AppendText(buffer, length, parent, mBuilder);
|
|
}
|
|
|
|
nsresult operator()(const opFosterParentText& aOperation) {
|
|
nsIContent* stackParent = *aOperation.mStackParent;
|
|
char16_t* buffer = aOperation.mBuffer;
|
|
uint32_t length = aOperation.mLength;
|
|
nsIContent* table = *aOperation.mTable;
|
|
return FosterParentText(stackParent, buffer, length, table, mBuilder);
|
|
}
|
|
|
|
nsresult operator()(const opAppendComment& aOperation) {
|
|
nsIContent* parent = *aOperation.mParent;
|
|
char16_t* buffer = aOperation.mBuffer;
|
|
uint32_t length = aOperation.mLength;
|
|
return AppendComment(parent, buffer, length, mBuilder);
|
|
}
|
|
|
|
nsresult operator()(const opAppendCommentToDocument& aOperation) {
|
|
char16_t* buffer = aOperation.mBuffer;
|
|
int32_t length = aOperation.mLength;
|
|
return AppendCommentToDocument(buffer, length, mBuilder);
|
|
}
|
|
|
|
nsresult operator()(const opAppendDoctypeToDocument& aOperation) {
|
|
nsAtom* name = aOperation.mName;
|
|
nsHtml5TreeOperationStringPair* pair = aOperation.mStringPair;
|
|
nsString publicId;
|
|
nsString systemId;
|
|
pair->Get(publicId, systemId);
|
|
return AppendDoctypeToDocument(name, publicId, systemId, mBuilder);
|
|
}
|
|
|
|
nsresult operator()(const opGetDocumentFragmentForTemplate& aOperation) {
|
|
nsIContent* node = *(aOperation.mTemplate);
|
|
*(aOperation.mFragHandle) = GetDocumentFragmentForTemplate(node);
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult operator()(const opSetDocumentFragmentForTemplate& aOperation) {
|
|
SetDocumentFragmentForTemplate(*aOperation.mTemplate,
|
|
*aOperation.mFragment);
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult operator()(const opGetShadowRootFromHost& aOperation) {
|
|
nsIContent* root = nsContentUtils::AttachDeclarativeShadowRoot(
|
|
*aOperation.mHost, aOperation.mShadowRootMode,
|
|
aOperation.mShadowRootIsClonable,
|
|
aOperation.mShadowRootIsSerializable,
|
|
aOperation.mShadowRootDelegatesFocus,
|
|
aOperation.mShadowRootCustomElementRegistry,
|
|
aOperation.mShadowRootSlotAssignment,
|
|
aOperation.mShadowRootReferenceTarget);
|
|
if (root) {
|
|
*aOperation.mFragHandle = root;
|
|
return NS_OK;
|
|
}
|
|
|
|
// We failed to attach a new shadow root, so instead attach a template
|
|
// element and return its content.
|
|
nsIContent* node = *aOperation.mTemplateNode;
|
|
*aOperation.mFragHandle =
|
|
static_cast<HTMLTemplateElement*>(node)->Content();
|
|
nsContentUtils::LogSimpleConsoleError(
|
|
u"Failed to attach Declarative Shadow DOM."_ns, "DOM"_ns,
|
|
mBuilder->GetDocument()->IsInPrivateBrowsing(),
|
|
mBuilder->GetDocument()->IsInChromeDocShell());
|
|
|
|
if (MOZ_UNLIKELY(node->GetParentNode())) {
|
|
Detach(node, mBuilder);
|
|
if (MOZ_UNLIKELY(node->GetParentNode())) {
|
|
// Can this happen? If it can, give up.
|
|
return NS_OK;
|
|
}
|
|
}
|
|
|
|
nsIContent* host = *aOperation.mHost;
|
|
|
|
if (MOZ_UNLIKELY(node->HasChildren()) &&
|
|
host->IsInclusiveDescendantOf(node)) {
|
|
// "If it is not possible to insert element at the adjusted insertion
|
|
// location, abort these steps."
|
|
// But see https://github.com/whatwg/html/issues/12494
|
|
return NS_OK;
|
|
}
|
|
|
|
nsHtml5TreeOperation::Append(node, host, mBuilder);
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult operator()(const opGetFosterParent& aOperation) {
|
|
nsIContent* table = *(aOperation.mTable);
|
|
nsIContent* stackParent = *(aOperation.mStackParent);
|
|
nsIContent* fosterParent = GetFosterParent(table, stackParent);
|
|
if (fosterParent) {
|
|
mBuilder->HoldElement(do_AddRef(fosterParent));
|
|
}
|
|
*aOperation.mParentHandle = fosterParent;
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult operator()(const opMarkAsBroken& aOperation) {
|
|
return aOperation.mResult;
|
|
}
|
|
|
|
nsresult operator()(
|
|
const opRunScriptThatMayDocumentWriteOrBlock& aOperation) {
|
|
nsIContent* node = *(aOperation.mElement);
|
|
nsAHtml5TreeBuilderState* snapshot = aOperation.mBuilderState;
|
|
if (snapshot) {
|
|
mBuilder->InitializeDocWriteParserState(snapshot,
|
|
aOperation.mLineNumber);
|
|
}
|
|
*mScriptElement = node;
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult operator()(
|
|
const opRunScriptThatCannotDocumentWriteOrBlock& aOperation) {
|
|
mBuilder->RunScript(*(aOperation.mElement), false);
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult operator()(const opPreventScriptExecution& aOperation) {
|
|
PreventScriptExecution(*(aOperation.mElement));
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult operator()(const opDoneAddingChildren& aOperation) {
|
|
nsIContent* node = *(aOperation.mElement);
|
|
node->DoneAddingChildren(node->HasParserNotified());
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult operator()(const opDoneCreatingElement& aOperation) {
|
|
DoneCreatingElement(*(aOperation.mElement));
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult operator()(const opUpdateCharsetSource& aOperation) {
|
|
mBuilder->UpdateCharsetSource(aOperation.mCharsetSource);
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult operator()(const opCharsetSwitchTo& aOperation) {
|
|
auto encoding = WrapNotNull(aOperation.mEncoding);
|
|
mBuilder->NeedsCharsetSwitchTo(encoding, aOperation.mCharsetSource,
|
|
(uint32_t)aOperation.mLineNumber);
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult operator()(const opUpdateStyleSheet& aOperation) {
|
|
mBuilder->UpdateStyleSheet(*(aOperation.mElement));
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult operator()(const opProcessOfflineManifest& aOperation) {
|
|
// TODO: remove this
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult operator()(const opMarkMalformedIfScript& aOperation) {
|
|
MarkMalformedIfScript(*(aOperation.mElement));
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult operator()(const opStreamEnded& aOperation) {
|
|
*mStreamEnded = true;
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult operator()(const opSetStyleLineNumber& aOperation) {
|
|
nsIContent* node = *(aOperation.mContent);
|
|
if (auto* linkStyle = LinkStyle::FromNode(*node)) {
|
|
linkStyle->SetLineNumber(aOperation.mLineNumber);
|
|
} else {
|
|
MOZ_ASSERT(nsNameSpaceManager::GetInstance()->mSVGDisabled,
|
|
"Node didn't QI to style, but SVG wasn't disabled.");
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult operator()(
|
|
const opSetScriptLineAndColumnNumberAndFreeze& aOperation) {
|
|
nsIContent* node = *(aOperation.mContent);
|
|
nsCOMPtr<nsIScriptElement> sele = do_QueryInterface(node);
|
|
if (sele) {
|
|
sele->SetScriptLineNumber(aOperation.mLineNumber);
|
|
sele->SetScriptColumnNumber(
|
|
JS::ColumnNumberOneOrigin(aOperation.mColumnNumber));
|
|
sele->FreezeExecutionAttrs(node->OwnerDoc());
|
|
} else {
|
|
MOZ_ASSERT(nsNameSpaceManager::GetInstance()->mSVGDisabled,
|
|
"Node didn't QI to script, but SVG wasn't disabled.");
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult operator()(const opSvgLoad& aOperation) {
|
|
SvgLoad(*(aOperation.mElement));
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult operator()(const opMaybeComplainAboutCharset& aOperation) {
|
|
char* msgId = aOperation.mMsgId;
|
|
bool error = aOperation.mError;
|
|
int32_t lineNumber = aOperation.mLineNumber;
|
|
mBuilder->MaybeComplainAboutCharset(msgId, error, (uint32_t)lineNumber);
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult operator()(const opMaybeComplainAboutDeepTree& aOperation) {
|
|
mBuilder->MaybeComplainAboutDeepTree((uint32_t)aOperation.mLineNumber);
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult operator()(const opAddClass& aOperation) {
|
|
Element* element = (*(aOperation.mElement))->AsElement();
|
|
char16_t* str = aOperation.mClass;
|
|
nsDependentString depStr(str);
|
|
// See viewsource.css for the possible classes
|
|
nsAutoString klass;
|
|
element->GetAttr(nsGkAtoms::_class, klass);
|
|
if (!klass.IsEmpty()) {
|
|
klass.Append(' ');
|
|
klass.Append(depStr);
|
|
element->SetAttr(kNameSpaceID_None, nsGkAtoms::_class, klass, true);
|
|
} else {
|
|
element->SetAttr(kNameSpaceID_None, nsGkAtoms::_class, depStr, true);
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult operator()(const opAddViewSourceHref& aOperation) {
|
|
Element* element = (*aOperation.mElement)->AsElement();
|
|
char16_t* buffer = aOperation.mBuffer;
|
|
int32_t length = aOperation.mLength;
|
|
nsDependentString relative(buffer, length);
|
|
|
|
Document* doc = mBuilder->GetDocument();
|
|
|
|
auto encoding = doc->GetDocumentCharacterSet();
|
|
nsCOMPtr<nsIURI> uri;
|
|
nsresult rv = NS_NewURI(getter_AddRefs(uri), relative, encoding,
|
|
mBuilder->GetViewSourceBaseURI());
|
|
NS_ENSURE_SUCCESS(rv, NS_OK);
|
|
|
|
// Reuse the fix for bug 467852
|
|
// URLs that execute script (e.g. "javascript:" URLs) should just be
|
|
// ignored. There's nothing reasonable we can do with them, and allowing
|
|
// them to execute in the context of the view-source window presents a
|
|
// security risk. Just return the empty string in this case.
|
|
bool openingExecutesScript = false;
|
|
rv = NS_URIChainHasFlags(uri,
|
|
nsIProtocolHandler::URI_OPENING_EXECUTES_SCRIPT,
|
|
&openingExecutesScript);
|
|
if (NS_FAILED(rv) || openingExecutesScript) {
|
|
return NS_OK;
|
|
}
|
|
|
|
nsAutoCString viewSourceUrl;
|
|
|
|
// URLs that return data (e.g. "http:" URLs) should be prefixed with
|
|
// "view-source:". URLs that don't return data should just be returned
|
|
// undecorated.
|
|
if (!nsContentUtils::IsExternalProtocol(uri)) {
|
|
viewSourceUrl.AssignLiteral("view-source:");
|
|
}
|
|
|
|
nsAutoCString spec;
|
|
rv = uri->GetSpec(spec);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
viewSourceUrl.Append(spec);
|
|
|
|
nsAutoString utf16;
|
|
CopyUTF8toUTF16(viewSourceUrl, utf16);
|
|
|
|
element->SetAttr(kNameSpaceID_None, nsGkAtoms::href, utf16, true);
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult operator()(const opAddViewSourceBase& aOperation) {
|
|
nsDependentString baseUrl(aOperation.mBuffer, aOperation.mLength);
|
|
mBuilder->AddBase(baseUrl);
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult operator()(const opAddErrorType& aOperation) {
|
|
Element* element = (*(aOperation.mElement))->AsElement();
|
|
char* msgId = aOperation.mMsgId;
|
|
nsAtom* atom = aOperation.mName;
|
|
nsAtom* otherAtom = aOperation.mOther;
|
|
// See viewsource.css for the possible classes in addition to "error".
|
|
nsAutoString klass;
|
|
element->GetAttr(nsGkAtoms::_class, klass);
|
|
if (!klass.IsEmpty()) {
|
|
klass.AppendLiteral(" error");
|
|
element->SetAttr(kNameSpaceID_None, nsGkAtoms::_class, klass, true);
|
|
} else {
|
|
element->SetAttr(kNameSpaceID_None, nsGkAtoms::_class, u"error"_ns,
|
|
true);
|
|
}
|
|
|
|
nsresult rv;
|
|
nsAutoString message;
|
|
if (otherAtom) {
|
|
rv = nsContentUtils::FormatLocalizedString(
|
|
message, PropertiesFile::HTMLPARSER_PROPERTIES, msgId,
|
|
nsDependentAtomString(atom), nsDependentAtomString(otherAtom));
|
|
NS_ENSURE_SUCCESS(rv, NS_OK);
|
|
} else if (atom) {
|
|
rv = nsContentUtils::FormatLocalizedString(
|
|
message, PropertiesFile::HTMLPARSER_PROPERTIES, msgId,
|
|
nsDependentAtomString(atom));
|
|
NS_ENSURE_SUCCESS(rv, NS_OK);
|
|
} else {
|
|
rv = nsContentUtils::GetLocalizedString(
|
|
PropertiesFile::HTMLPARSER_PROPERTIES, msgId, message);
|
|
NS_ENSURE_SUCCESS(rv, NS_OK);
|
|
}
|
|
|
|
nsAutoString title;
|
|
element->GetAttr(nsGkAtoms::title, title);
|
|
if (!title.IsEmpty()) {
|
|
title.Append('\n');
|
|
title.Append(message);
|
|
element->SetAttr(kNameSpaceID_None, nsGkAtoms::title, title, true);
|
|
} else {
|
|
element->SetAttr(kNameSpaceID_None, nsGkAtoms::title, message, true);
|
|
}
|
|
return rv;
|
|
}
|
|
|
|
nsresult operator()(const opAddLineNumberId& aOperation) {
|
|
Element* element = (*(aOperation.mElement))->AsElement();
|
|
int32_t lineNumber = aOperation.mLineNumber;
|
|
nsAutoString val(u"line"_ns);
|
|
val.AppendInt(lineNumber);
|
|
element->SetAttr(kNameSpaceID_None, nsGkAtoms::id, val, true);
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult operator()(const opShallowCloneInto& aOperation) {
|
|
nsIContent* src = *aOperation.mSrc;
|
|
ErrorResult rv;
|
|
RefPtr<nsINode> clone = src->CloneNode(false, rv);
|
|
if (NS_WARN_IF(rv.Failed())) {
|
|
return rv.StealNSResult();
|
|
}
|
|
*aOperation.mDst = clone->AsContent();
|
|
mBuilder->HoldElement(clone.forget().downcast<nsIContent>());
|
|
return Append(*aOperation.mDst, *aOperation.mIntendedParent,
|
|
aOperation.mFromParser, mBuilder);
|
|
}
|
|
|
|
nsresult operator()(const opStartLayout& aOperation) {
|
|
mBuilder->StartLayout(
|
|
mInterrupted); // this causes a notification flush anyway
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult operator()(const opEnableEncodingMenu& aOperation) {
|
|
Document* doc = mBuilder->GetDocument();
|
|
doc->EnableEncodingMenu();
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult operator()(const opMicrotaskCheckpoint& aOperation) {
|
|
nsHtml5AutoPauseUpdate autoPauseContentUpdate(mBuilder);
|
|
nsAutoMicroTask mt;
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult operator()(const uninitialized& aOperation) {
|
|
MOZ_CRASH("uninitialized");
|
|
return NS_OK;
|
|
}
|
|
};
|
|
|
|
return mOperation.match(TreeOperationMatcher(aBuilder, aScriptElement,
|
|
aInterrupted, aStreamEnded));
|
|
}
|