зеркало из https://github.com/mozilla/gecko-dev.git
1676 строки
49 KiB
C++
1676 строки
49 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 "nsCOMPtr.h"
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#include "nsXMLContentSink.h"
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#include "nsIParser.h"
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#include "nsIDocument.h"
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#include "nsIContent.h"
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#include "nsIURI.h"
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#include "nsNetUtil.h"
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#include "nsIDocShell.h"
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#include "nsIStyleSheetLinkingElement.h"
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#include "nsHTMLParts.h"
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#include "nsCRT.h"
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#include "mozilla/StyleSheetInlines.h"
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#include "mozilla/css/Loader.h"
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#include "nsGkAtoms.h"
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#include "nsContentUtils.h"
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#include "nsDocElementCreatedNotificationRunner.h"
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#include "nsIScriptContext.h"
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#include "nsNameSpaceManager.h"
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#include "nsIServiceManager.h"
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#include "nsIScriptSecurityManager.h"
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#include "nsIContentViewer.h"
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#include "prtime.h"
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#include "mozilla/Logging.h"
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#include "nsRect.h"
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#include "nsIWebNavigation.h"
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#include "nsIScriptElement.h"
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#include "nsStyleLinkElement.h"
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#include "nsReadableUtils.h"
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#include "nsUnicharUtils.h"
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#include "nsICookieService.h"
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#include "nsIPrompt.h"
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#include "nsIChannel.h"
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#include "nsIPrincipal.h"
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#include "nsXMLPrettyPrinter.h"
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#include "nsNodeInfoManager.h"
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#include "nsContentCreatorFunctions.h"
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#include "nsIContentPolicy.h"
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#include "nsContentPolicyUtils.h"
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#include "nsError.h"
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#include "nsNodeUtils.h"
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#include "nsIScriptGlobalObject.h"
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#include "nsIHTMLDocument.h"
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#include "mozAutoDocUpdate.h"
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#include "nsMimeTypes.h"
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#include "nsHtml5SVGLoadDispatcher.h"
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#include "nsTextNode.h"
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#include "mozilla/dom/CDATASection.h"
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#include "mozilla/dom/Comment.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/HTMLTemplateElement.h"
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#include "mozilla/dom/ProcessingInstruction.h"
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#include "mozilla/dom/ScriptLoader.h"
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#include "mozilla/dom/txMozillaXSLTProcessor.h"
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#include "mozilla/LoadInfo.h"
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using namespace mozilla;
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using namespace mozilla::dom;
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// XXX Open Issues:
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// 1) what's not allowed - We need to figure out which HTML tags
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// (prefixed with a HTML namespace qualifier) are explicitly not
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// allowed (if any).
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// 2) factoring code with nsHTMLContentSink - There's some amount of
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// common code between this and the HTML content sink. This will
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// increase as we support more and more HTML elements. How can code
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// from the code be factored?
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nsresult
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NS_NewXMLContentSink(nsIXMLContentSink** aResult,
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nsIDocument* aDoc,
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nsIURI* aURI,
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nsISupports* aContainer,
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nsIChannel* aChannel)
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{
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MOZ_ASSERT(nullptr != aResult, "null ptr");
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if (nullptr == aResult) {
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return NS_ERROR_NULL_POINTER;
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}
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RefPtr<nsXMLContentSink> it = new nsXMLContentSink();
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nsresult rv = it->Init(aDoc, aURI, aContainer, aChannel);
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NS_ENSURE_SUCCESS(rv, rv);
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it.forget(aResult);
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return NS_OK;
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}
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nsXMLContentSink::nsXMLContentSink()
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: mState(eXMLContentSinkState_InProlog)
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, mTextLength(0)
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, mNotifyLevel(0)
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, mPrettyPrintXML(true)
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, mPrettyPrintHasSpecialRoot(0)
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, mPrettyPrintHasFactoredElements(0)
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, mPrettyPrinting(0)
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, mPreventScriptExecution(0)
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{
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PodArrayZero(mText);
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}
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nsXMLContentSink::~nsXMLContentSink()
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{
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}
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nsresult
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nsXMLContentSink::Init(nsIDocument* aDoc,
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nsIURI* aURI,
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nsISupports* aContainer,
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nsIChannel* aChannel)
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{
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nsresult rv = nsContentSink::Init(aDoc, aURI, aContainer, aChannel);
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NS_ENSURE_SUCCESS(rv, rv);
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aDoc->AddObserver(this);
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mIsDocumentObserver = true;
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if (!mDocShell) {
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mPrettyPrintXML = false;
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}
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mState = eXMLContentSinkState_InProlog;
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mDocElement = nullptr;
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return NS_OK;
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}
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NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(nsXMLContentSink)
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NS_INTERFACE_MAP_ENTRY(nsIContentSink)
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NS_INTERFACE_MAP_ENTRY(nsIXMLContentSink)
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NS_INTERFACE_MAP_ENTRY(nsIExpatSink)
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NS_INTERFACE_MAP_ENTRY(nsITransformObserver)
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NS_INTERFACE_MAP_END_INHERITING(nsContentSink)
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NS_IMPL_ADDREF_INHERITED(nsXMLContentSink, nsContentSink)
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NS_IMPL_RELEASE_INHERITED(nsXMLContentSink, nsContentSink)
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NS_IMPL_CYCLE_COLLECTION_CLASS(nsXMLContentSink)
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN_INHERITED(nsXMLContentSink,
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nsContentSink)
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mCurrentHead)
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mDocElement)
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for (uint32_t i = 0, count = tmp->mContentStack.Length(); i < count; i++) {
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const StackNode& node = tmp->mContentStack.ElementAt(i);
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cb.NoteXPCOMChild(node.mContent);
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}
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mDocumentChildren)
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
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// nsIContentSink
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NS_IMETHODIMP
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nsXMLContentSink::WillParse(void)
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{
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return WillParseImpl();
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}
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NS_IMETHODIMP
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nsXMLContentSink::WillBuildModel(nsDTDMode aDTDMode)
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{
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WillBuildModelImpl();
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// Notify document that the load is beginning
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mDocument->BeginLoad();
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// Check for correct load-command for maybe prettyprinting
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if (mPrettyPrintXML) {
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nsAutoCString command;
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GetParser()->GetCommand(command);
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if (!command.EqualsLiteral("view")) {
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mPrettyPrintXML = false;
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}
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}
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return NS_OK;
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}
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bool
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nsXMLContentSink::CanStillPrettyPrint()
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{
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return mPrettyPrintXML &&
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(!mPrettyPrintHasFactoredElements || mPrettyPrintHasSpecialRoot);
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}
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nsresult
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nsXMLContentSink::MaybePrettyPrint()
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{
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if (!CanStillPrettyPrint()) {
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mPrettyPrintXML = false;
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return NS_OK;
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}
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// stop observing in order to avoid crashing when replacing content
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mDocument->RemoveObserver(this);
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mIsDocumentObserver = false;
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// Reenable the CSSLoader so that the prettyprinting stylesheets can load
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if (mCSSLoader) {
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mCSSLoader->SetEnabled(true);
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}
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RefPtr<nsXMLPrettyPrinter> printer;
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nsresult rv = NS_NewXMLPrettyPrinter(getter_AddRefs(printer));
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NS_ENSURE_SUCCESS(rv, rv);
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bool isPrettyPrinting;
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rv = printer->PrettyPrint(mDocument, &isPrettyPrinting);
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NS_ENSURE_SUCCESS(rv, rv);
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mPrettyPrinting = isPrettyPrinting;
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return NS_OK;
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}
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static void
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CheckXSLTParamPI(ProcessingInstruction* aPi,
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nsIDocumentTransformer* aProcessor,
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nsINode* aSource)
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{
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nsAutoString target, data;
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aPi->GetTarget(target);
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// Check for namespace declarations
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if (target.EqualsLiteral("xslt-param-namespace")) {
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aPi->GetData(data);
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nsAutoString prefix, namespaceAttr;
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nsContentUtils::GetPseudoAttributeValue(data, nsGkAtoms::prefix,
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prefix);
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if (!prefix.IsEmpty() &&
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nsContentUtils::GetPseudoAttributeValue(data, nsGkAtoms::_namespace,
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namespaceAttr)) {
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aProcessor->AddXSLTParamNamespace(prefix, namespaceAttr);
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}
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}
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// Check for actual parameters
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else if (target.EqualsLiteral("xslt-param")) {
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aPi->GetData(data);
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nsAutoString name, namespaceAttr, select, value;
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nsContentUtils::GetPseudoAttributeValue(data, nsGkAtoms::name,
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name);
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nsContentUtils::GetPseudoAttributeValue(data, nsGkAtoms::_namespace,
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namespaceAttr);
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if (!nsContentUtils::GetPseudoAttributeValue(data, nsGkAtoms::select, select)) {
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select.SetIsVoid(true);
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}
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if (!nsContentUtils::GetPseudoAttributeValue(data, nsGkAtoms::value, value)) {
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value.SetIsVoid(true);
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}
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if (!name.IsEmpty()) {
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aProcessor->AddXSLTParam(name, namespaceAttr, select, value, aSource);
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}
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}
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}
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NS_IMETHODIMP
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nsXMLContentSink::DidBuildModel(bool aTerminated)
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{
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if (!mParser) {
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// If mParser is null, this parse has already been terminated and must
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// not been terminated again. However, nsDocument may still think that
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// the parse has not been terminated and call back into here in the case
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// where the XML parser has finished but the XSLT transform associated
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// with the document has not.
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return NS_OK;
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}
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DidBuildModelImpl(aTerminated);
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if (mXSLTProcessor) {
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// stop observing in order to avoid crashing when replacing content
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mDocument->RemoveObserver(this);
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mIsDocumentObserver = false;
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ErrorResult rv;
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RefPtr<DocumentFragment> source = mDocument->CreateDocumentFragment();
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for (nsIContent* child : mDocumentChildren) {
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// XPath data model doesn't have DocumentType nodes.
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if (child->NodeType() != nsINode::DOCUMENT_TYPE_NODE) {
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source->AppendChild(*child, rv);
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if (rv.Failed()) {
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return rv.StealNSResult();
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}
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}
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}
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// Check for xslt-param and xslt-param-namespace PIs
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for (nsIContent* child : mDocumentChildren) {
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if (auto pi = ProcessingInstruction::FromNode(child)) {
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CheckXSLTParamPI(pi, mXSLTProcessor, source);
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}
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else if (child->IsElement()) {
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// Only honor PIs in the prolog
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break;
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}
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}
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mXSLTProcessor->SetSourceContentModel(source);
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// Since the processor now holds a reference to us we drop our reference
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// to it to avoid owning cycles
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mXSLTProcessor = nullptr;
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}
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else {
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// Kick off layout for non-XSLT transformed documents.
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// Check if we want to prettyprint
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MaybePrettyPrint();
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bool startLayout = true;
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if (mPrettyPrinting) {
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NS_ASSERTION(!mPendingSheetCount, "Shouldn't have pending sheets here!");
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// We're pretty-printing now. See whether we should wait up on
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// stylesheet loads
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if (mDocument->CSSLoader()->HasPendingLoads()) {
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mDocument->CSSLoader()->AddObserver(this);
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// wait for those sheets to load
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startLayout = false;
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}
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}
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if (startLayout) {
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StartLayout(false);
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ScrollToRef();
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}
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mDocument->RemoveObserver(this);
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mIsDocumentObserver = false;
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mDocument->EndLoad();
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DropParserAndPerfHint();
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}
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return NS_OK;
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}
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NS_IMETHODIMP
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nsXMLContentSink::OnDocumentCreated(nsIDocument* aResultDocument)
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{
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NS_ENSURE_ARG(aResultDocument);
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nsCOMPtr<nsIHTMLDocument> htmlDoc = do_QueryInterface(aResultDocument);
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if (htmlDoc) {
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htmlDoc->SetDocWriteDisabled(true);
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}
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nsCOMPtr<nsIContentViewer> contentViewer;
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mDocShell->GetContentViewer(getter_AddRefs(contentViewer));
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if (contentViewer) {
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return contentViewer->SetDocumentInternal(aResultDocument, true);
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}
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return NS_OK;
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}
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NS_IMETHODIMP
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nsXMLContentSink::OnTransformDone(nsresult aResult,
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nsIDocument* aResultDocument)
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{
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MOZ_ASSERT(aResultDocument, "Don't notify about transform end without a document.");
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mDocumentChildren.Clear();
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nsCOMPtr<nsIContentViewer> contentViewer;
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mDocShell->GetContentViewer(getter_AddRefs(contentViewer));
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if (NS_FAILED(aResult) && contentViewer) {
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// Transform failed.
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aResultDocument->SetMayStartLayout(false);
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// We have an error document.
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contentViewer->SetDocument(aResultDocument);
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}
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nsCOMPtr<nsIDocument> originalDocument = mDocument;
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bool blockingOnload = mIsBlockingOnload;
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if (!mRunsToCompletion) {
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// This BlockOnload call corresponds to the UnblockOnload call in
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// nsContentSink::DropParserAndPerfHint.
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aResultDocument->BlockOnload();
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mIsBlockingOnload = true;
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}
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// Transform succeeded, or it failed and we have an error document to display.
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mDocument = aResultDocument;
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nsCOMPtr<nsIHTMLDocument> htmlDoc = do_QueryInterface(mDocument);
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if (htmlDoc) {
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htmlDoc->SetDocWriteDisabled(false);
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}
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// Notify document observers that all the content has been stuck
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// into the document.
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// XXX do we need to notify for things like PIs? Or just the
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// documentElement?
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nsIContent *rootElement = mDocument->GetRootElement();
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if (rootElement) {
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NS_ASSERTION(mDocument->ComputeIndexOf(rootElement) != -1,
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"rootElement not in doc?");
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mDocument->BeginUpdate();
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nsNodeUtils::ContentInserted(mDocument, rootElement);
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mDocument->EndUpdate();
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}
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// Start the layout process
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StartLayout(false);
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ScrollToRef();
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originalDocument->EndLoad();
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if (blockingOnload) {
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// This UnblockOnload call corresponds to the BlockOnload call in
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// nsContentSink::WillBuildModelImpl.
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originalDocument->UnblockOnload(true);
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}
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DropParserAndPerfHint();
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return NS_OK;
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}
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NS_IMETHODIMP
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nsXMLContentSink::StyleSheetLoaded(StyleSheet* aSheet,
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bool aWasDeferred,
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nsresult aStatus)
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{
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if (!mPrettyPrinting) {
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return nsContentSink::StyleSheetLoaded(aSheet, aWasDeferred, aStatus);
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}
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if (!mDocument->CSSLoader()->HasPendingLoads()) {
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mDocument->CSSLoader()->RemoveObserver(this);
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StartLayout(false);
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ScrollToRef();
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}
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return NS_OK;
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}
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NS_IMETHODIMP
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nsXMLContentSink::WillInterrupt(void)
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{
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return WillInterruptImpl();
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}
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NS_IMETHODIMP
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nsXMLContentSink::WillResume(void)
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{
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return WillResumeImpl();
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}
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NS_IMETHODIMP
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nsXMLContentSink::SetParser(nsParserBase* aParser)
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{
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MOZ_ASSERT(aParser, "Should have a parser here!");
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mParser = aParser;
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return NS_OK;
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}
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static bool
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FindIsAttrValue(const char16_t** aAtts, const char16_t** aResult)
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{
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RefPtr<nsAtom> prefix, localName;
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for (; *aAtts; aAtts += 2) {
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int32_t nameSpaceID;
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nsContentUtils::SplitExpatName(aAtts[0], getter_AddRefs(prefix),
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getter_AddRefs(localName), &nameSpaceID);
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if (nameSpaceID == kNameSpaceID_None && localName == nsGkAtoms::is) {
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*aResult = aAtts[1];
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return true;
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}
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}
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return false;
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}
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nsresult
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nsXMLContentSink::CreateElement(const char16_t** aAtts, uint32_t aAttsCount,
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mozilla::dom::NodeInfo* aNodeInfo,
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uint32_t aLineNumber, uint32_t aColumnNumber,
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nsIContent** aResult, bool* aAppendContent,
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FromParser aFromParser)
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{
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NS_ASSERTION(aNodeInfo, "can't create element without nodeinfo");
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*aResult = nullptr;
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*aAppendContent = true;
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nsresult rv = NS_OK;
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RefPtr<mozilla::dom::NodeInfo> ni = aNodeInfo;
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RefPtr<Element> content;
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const char16_t* is = nullptr;
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if ((aNodeInfo->NamespaceEquals(kNameSpaceID_XHTML) ||
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aNodeInfo->NamespaceEquals(kNameSpaceID_XUL)) &&
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FindIsAttrValue(aAtts, &is)) {
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const nsDependentString isStr(is);
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rv = NS_NewElement(getter_AddRefs(content), ni.forget(), aFromParser, &isStr);
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} else {
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rv = NS_NewElement(getter_AddRefs(content), ni.forget(), aFromParser);
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}
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NS_ENSURE_SUCCESS(rv, rv);
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if (aNodeInfo->Equals(nsGkAtoms::script, kNameSpaceID_XHTML)
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|| aNodeInfo->Equals(nsGkAtoms::script, kNameSpaceID_SVG)
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) {
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nsCOMPtr<nsIScriptElement> sele = do_QueryInterface(content);
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if (sele) {
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sele->SetScriptLineNumber(aLineNumber);
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sele->SetScriptColumnNumber(aColumnNumber);
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sele->SetCreatorParser(GetParser());
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} else {
|
|
MOZ_ASSERT(nsNameSpaceManager::GetInstance()->mSVGDisabled, "Node didn't QI to script, but SVG wasn't disabled.");
|
|
}
|
|
}
|
|
|
|
// XHTML needs some special attention
|
|
if (aNodeInfo->NamespaceEquals(kNameSpaceID_XHTML)) {
|
|
mPrettyPrintHasFactoredElements = true;
|
|
}
|
|
else {
|
|
// If we care, find out if we just used a special factory.
|
|
if (!mPrettyPrintHasFactoredElements && !mPrettyPrintHasSpecialRoot &&
|
|
mPrettyPrintXML) {
|
|
mPrettyPrintHasFactoredElements =
|
|
nsContentUtils::NameSpaceManager()->
|
|
HasElementCreator(aNodeInfo->NamespaceID());
|
|
}
|
|
|
|
if (!aNodeInfo->NamespaceEquals(kNameSpaceID_SVG)) {
|
|
content.forget(aResult);
|
|
|
|
return NS_OK;
|
|
}
|
|
}
|
|
|
|
if (aNodeInfo->Equals(nsGkAtoms::link, kNameSpaceID_XHTML) ||
|
|
aNodeInfo->Equals(nsGkAtoms::style, kNameSpaceID_XHTML) ||
|
|
aNodeInfo->Equals(nsGkAtoms::style, kNameSpaceID_SVG)) {
|
|
nsCOMPtr<nsIStyleSheetLinkingElement> ssle(do_QueryInterface(content));
|
|
if (ssle) {
|
|
ssle->InitStyleLinkElement(false);
|
|
if (aFromParser) {
|
|
ssle->SetEnableUpdates(false);
|
|
}
|
|
if (!aNodeInfo->Equals(nsGkAtoms::link, kNameSpaceID_XHTML)) {
|
|
ssle->SetLineNumber(aFromParser ? aLineNumber : 0);
|
|
ssle->SetColumnNumber(aFromParser ? aColumnNumber : 0);
|
|
}
|
|
}
|
|
}
|
|
|
|
content.forget(aResult);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
|
|
nsresult
|
|
nsXMLContentSink::CloseElement(nsIContent* aContent)
|
|
{
|
|
NS_ASSERTION(aContent, "missing element to close");
|
|
|
|
mozilla::dom::NodeInfo *nodeInfo = aContent->NodeInfo();
|
|
|
|
// Some HTML nodes need DoneAddingChildren() called to initialize
|
|
// properly (eg form state restoration).
|
|
if ((nodeInfo->NamespaceID() == kNameSpaceID_XHTML &&
|
|
(nodeInfo->NameAtom() == nsGkAtoms::select ||
|
|
nodeInfo->NameAtom() == nsGkAtoms::textarea ||
|
|
nodeInfo->NameAtom() == nsGkAtoms::video ||
|
|
nodeInfo->NameAtom() == nsGkAtoms::audio ||
|
|
nodeInfo->NameAtom() == nsGkAtoms::head ||
|
|
nodeInfo->NameAtom() == nsGkAtoms::object))
|
|
|| nodeInfo->NameAtom() == nsGkAtoms::title
|
|
) {
|
|
aContent->DoneAddingChildren(HaveNotifiedForCurrentContent());
|
|
}
|
|
|
|
if (IsMonolithicContainer(nodeInfo)) {
|
|
mInMonolithicContainer--;
|
|
}
|
|
|
|
if (!nodeInfo->NamespaceEquals(kNameSpaceID_XHTML) &&
|
|
!nodeInfo->NamespaceEquals(kNameSpaceID_SVG)) {
|
|
return NS_OK;
|
|
}
|
|
|
|
if (nodeInfo->Equals(nsGkAtoms::script, kNameSpaceID_XHTML)
|
|
|| nodeInfo->Equals(nsGkAtoms::script, kNameSpaceID_SVG)
|
|
) {
|
|
nsCOMPtr<nsIScriptElement> sele = do_QueryInterface(aContent);
|
|
if (!sele) {
|
|
MOZ_ASSERT(nsNameSpaceManager::GetInstance()->mSVGDisabled, "Node didn't QI to script, but SVG wasn't disabled.");
|
|
return NS_OK;
|
|
}
|
|
|
|
if (mPreventScriptExecution) {
|
|
sele->PreventExecution();
|
|
return NS_OK;
|
|
}
|
|
|
|
// Always check the clock in nsContentSink right after a script
|
|
StopDeflecting();
|
|
|
|
// Now tell the script that it's ready to go. This may execute the script
|
|
// or return true, or neither if the script doesn't need executing.
|
|
bool block = sele->AttemptToExecute();
|
|
|
|
// If the parser got blocked, make sure to return the appropriate rv.
|
|
// I'm not sure if this is actually needed or not.
|
|
if (mParser && !mParser->IsParserEnabled()) {
|
|
block = true;
|
|
}
|
|
|
|
return block ? NS_ERROR_HTMLPARSER_BLOCK : NS_OK;
|
|
}
|
|
|
|
nsresult rv = NS_OK;
|
|
if (nodeInfo->Equals(nsGkAtoms::meta, kNameSpaceID_XHTML) &&
|
|
// Need to check here to make sure this meta tag does not set
|
|
// mPrettyPrintXML to false when we have a special root!
|
|
(!mPrettyPrintXML || !mPrettyPrintHasSpecialRoot)) {
|
|
rv = ProcessMETATag(aContent);
|
|
}
|
|
else if (nodeInfo->Equals(nsGkAtoms::link, kNameSpaceID_XHTML) ||
|
|
nodeInfo->Equals(nsGkAtoms::style, kNameSpaceID_XHTML) ||
|
|
nodeInfo->Equals(nsGkAtoms::style, kNameSpaceID_SVG)) {
|
|
nsCOMPtr<nsIStyleSheetLinkingElement> ssle(do_QueryInterface(aContent));
|
|
if (ssle) {
|
|
ssle->SetEnableUpdates(true);
|
|
auto updateOrError =
|
|
ssle->UpdateStyleSheet(mRunsToCompletion ? nullptr : this);
|
|
if (updateOrError.isErr()) {
|
|
rv = updateOrError.unwrapErr();
|
|
} else if (updateOrError.unwrap().ShouldBlock() && !mRunsToCompletion) {
|
|
++mPendingSheetCount;
|
|
mScriptLoader->AddParserBlockingScriptExecutionBlocker();
|
|
}
|
|
}
|
|
}
|
|
|
|
return rv;
|
|
}
|
|
|
|
nsresult
|
|
nsXMLContentSink::AddContentAsLeaf(nsIContent *aContent)
|
|
{
|
|
nsresult result = NS_OK;
|
|
|
|
if (mState == eXMLContentSinkState_InProlog) {
|
|
NS_ASSERTION(mDocument, "Fragments have no prolog");
|
|
mDocumentChildren.AppendElement(aContent);
|
|
} else if (mState == eXMLContentSinkState_InEpilog) {
|
|
NS_ASSERTION(mDocument, "Fragments have no epilog");
|
|
if (mXSLTProcessor) {
|
|
mDocumentChildren.AppendElement(aContent);
|
|
} else {
|
|
mDocument->AppendChildTo(aContent, false);
|
|
}
|
|
} else {
|
|
nsCOMPtr<nsIContent> parent = GetCurrentContent();
|
|
|
|
if (parent) {
|
|
result = parent->AppendChildTo(aContent, false);
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
|
|
// Create an XML parser and an XSL content sink and start parsing
|
|
// the XSL stylesheet located at the given URI.
|
|
nsresult
|
|
nsXMLContentSink::LoadXSLStyleSheet(nsIURI* aUrl)
|
|
{
|
|
nsCOMPtr<nsIDocumentTransformer> processor = new txMozillaXSLTProcessor();
|
|
|
|
processor->SetTransformObserver(this);
|
|
|
|
if (NS_SUCCEEDED(processor->LoadStyleSheet(aUrl, mDocument))) {
|
|
mXSLTProcessor.swap(processor);
|
|
}
|
|
|
|
// Intentionally ignore errors here, we should continue loading the
|
|
// XML document whether we're able to load the XSLT stylesheet or
|
|
// not.
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
nsXMLContentSink::ProcessStyleLinkFromHeader(const nsAString& aHref,
|
|
bool aAlternate,
|
|
const nsAString& aTitle,
|
|
const nsAString& aType,
|
|
const nsAString& aMedia,
|
|
const nsAString& aReferrerPolicy)
|
|
{
|
|
mPrettyPrintXML = false;
|
|
|
|
nsAutoCString cmd;
|
|
if (mParser)
|
|
GetParser()->GetCommand(cmd);
|
|
if (cmd.EqualsASCII(kLoadAsData))
|
|
return NS_OK; // Do not load stylesheets when loading as data
|
|
|
|
bool wasXSLT;
|
|
nsresult rv = MaybeProcessXSLTLink(nullptr, aHref, aAlternate, aType, aType,
|
|
aMedia, aReferrerPolicy, &wasXSLT);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
if (wasXSLT) {
|
|
// We're done here.
|
|
return NS_OK;
|
|
}
|
|
|
|
// Otherwise fall through to nsContentSink to handle CSS Link headers.
|
|
return nsContentSink::ProcessStyleLinkFromHeader(aHref, aAlternate,
|
|
aTitle, aType, aMedia,
|
|
aReferrerPolicy);
|
|
}
|
|
|
|
nsresult
|
|
nsXMLContentSink::MaybeProcessXSLTLink(
|
|
ProcessingInstruction* aProcessingInstruction,
|
|
const nsAString& aHref,
|
|
bool aAlternate,
|
|
const nsAString& aTitle,
|
|
const nsAString& aType,
|
|
const nsAString& aMedia,
|
|
const nsAString& aReferrerPolicy,
|
|
bool* aWasXSLT)
|
|
{
|
|
bool wasXSLT =
|
|
aType.LowerCaseEqualsLiteral(TEXT_XSL) ||
|
|
aType.LowerCaseEqualsLiteral(APPLICATION_XSLT_XML) ||
|
|
aType.LowerCaseEqualsLiteral(TEXT_XML) ||
|
|
aType.LowerCaseEqualsLiteral(APPLICATION_XML);
|
|
|
|
if (aWasXSLT) {
|
|
*aWasXSLT = wasXSLT;
|
|
}
|
|
|
|
if (!wasXSLT) {
|
|
return NS_OK;
|
|
}
|
|
|
|
if (aAlternate) {
|
|
// don't load alternate XSLT
|
|
return NS_OK;
|
|
}
|
|
// LoadXSLStyleSheet needs a mDocShell.
|
|
if (!mDocShell) {
|
|
return NS_OK;
|
|
}
|
|
|
|
nsCOMPtr<nsIURI> url;
|
|
nsresult rv = NS_NewURI(getter_AddRefs(url), aHref, nullptr,
|
|
mDocument->GetDocBaseURI());
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
// Do security check
|
|
nsIScriptSecurityManager *secMan = nsContentUtils::GetSecurityManager();
|
|
rv = secMan->
|
|
CheckLoadURIWithPrincipal(mDocument->NodePrincipal(), url,
|
|
nsIScriptSecurityManager::ALLOW_CHROME);
|
|
NS_ENSURE_SUCCESS(rv, NS_OK);
|
|
|
|
nsCOMPtr<nsILoadInfo> secCheckLoadInfo =
|
|
new net::LoadInfo(mDocument->NodePrincipal(), // loading principal
|
|
mDocument->NodePrincipal(), // triggering principal
|
|
aProcessingInstruction,
|
|
nsILoadInfo::SEC_ONLY_FOR_EXPLICIT_CONTENTSEC_CHECK,
|
|
nsIContentPolicy::TYPE_XSLT);
|
|
|
|
// Do content policy check
|
|
int16_t decision = nsIContentPolicy::ACCEPT;
|
|
rv = NS_CheckContentLoadPolicy(url,
|
|
secCheckLoadInfo,
|
|
NS_ConvertUTF16toUTF8(aType),
|
|
&decision,
|
|
nsContentUtils::GetContentPolicy());
|
|
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
if (NS_CP_REJECTED(decision)) {
|
|
return NS_OK;
|
|
}
|
|
|
|
return LoadXSLStyleSheet(url);
|
|
}
|
|
|
|
void
|
|
nsXMLContentSink::SetDocumentCharset(NotNull<const Encoding*> aEncoding)
|
|
{
|
|
if (mDocument) {
|
|
mDocument->SetDocumentCharacterSet(aEncoding);
|
|
}
|
|
}
|
|
|
|
nsISupports *
|
|
nsXMLContentSink::GetTarget()
|
|
{
|
|
return mDocument;
|
|
}
|
|
|
|
bool
|
|
nsXMLContentSink::IsScriptExecuting()
|
|
{
|
|
return IsScriptExecutingImpl();
|
|
}
|
|
|
|
nsresult
|
|
nsXMLContentSink::FlushText(bool aReleaseTextNode)
|
|
{
|
|
nsresult rv = NS_OK;
|
|
|
|
if (mTextLength != 0) {
|
|
if (mLastTextNode) {
|
|
bool notify = HaveNotifiedForCurrentContent();
|
|
// We could probably always increase mInNotification here since
|
|
// if AppendText doesn't notify it shouldn't trigger evil code.
|
|
// But just in case it does, we don't want to mask any notifications.
|
|
if (notify) {
|
|
++mInNotification;
|
|
}
|
|
rv = mLastTextNode->AppendText(mText, mTextLength, notify);
|
|
if (notify) {
|
|
--mInNotification;
|
|
}
|
|
|
|
mTextLength = 0;
|
|
} else {
|
|
RefPtr<nsTextNode> textContent = new nsTextNode(mNodeInfoManager);
|
|
|
|
mLastTextNode = textContent;
|
|
|
|
// Set the text in the text node
|
|
textContent->SetText(mText, mTextLength, false);
|
|
mTextLength = 0;
|
|
|
|
// Add text to its parent
|
|
rv = AddContentAsLeaf(textContent);
|
|
}
|
|
}
|
|
|
|
if (aReleaseTextNode) {
|
|
mLastTextNode = nullptr;
|
|
}
|
|
|
|
return rv;
|
|
}
|
|
|
|
nsIContent*
|
|
nsXMLContentSink::GetCurrentContent()
|
|
{
|
|
if (mContentStack.Length() == 0) {
|
|
return nullptr;
|
|
}
|
|
return GetCurrentStackNode()->mContent;
|
|
}
|
|
|
|
StackNode*
|
|
nsXMLContentSink::GetCurrentStackNode()
|
|
{
|
|
int32_t count = mContentStack.Length();
|
|
return count != 0 ? &mContentStack[count-1] : nullptr;
|
|
}
|
|
|
|
|
|
nsresult
|
|
nsXMLContentSink::PushContent(nsIContent *aContent)
|
|
{
|
|
MOZ_ASSERT(aContent, "Null content being pushed!");
|
|
StackNode *sn = mContentStack.AppendElement();
|
|
NS_ENSURE_TRUE(sn, NS_ERROR_OUT_OF_MEMORY);
|
|
|
|
nsIContent* contentToPush = aContent;
|
|
|
|
// When an XML parser would append a node to a template element, it
|
|
// must instead append it to the template element's template contents.
|
|
if (contentToPush->IsHTMLElement(nsGkAtoms::_template)) {
|
|
HTMLTemplateElement* templateElement =
|
|
static_cast<HTMLTemplateElement*>(contentToPush);
|
|
contentToPush = templateElement->Content();
|
|
}
|
|
|
|
sn->mContent = contentToPush;
|
|
sn->mNumFlushed = 0;
|
|
return NS_OK;
|
|
}
|
|
|
|
void
|
|
nsXMLContentSink::PopContent()
|
|
{
|
|
int32_t count = mContentStack.Length();
|
|
|
|
if (count == 0) {
|
|
NS_WARNING("Popping empty stack");
|
|
return;
|
|
}
|
|
|
|
mContentStack.RemoveElementAt(count - 1);
|
|
}
|
|
|
|
bool
|
|
nsXMLContentSink::HaveNotifiedForCurrentContent() const
|
|
{
|
|
uint32_t stackLength = mContentStack.Length();
|
|
if (stackLength) {
|
|
const StackNode& stackNode = mContentStack[stackLength - 1];
|
|
nsIContent* parent = stackNode.mContent;
|
|
return stackNode.mNumFlushed == parent->GetChildCount();
|
|
}
|
|
return true;
|
|
}
|
|
|
|
void
|
|
nsXMLContentSink::MaybeStartLayout(bool aIgnorePendingSheets)
|
|
{
|
|
// XXXbz if aIgnorePendingSheets is true, what should we do when
|
|
// mXSLTProcessor or CanStillPrettyPrint()?
|
|
if (mLayoutStarted || mXSLTProcessor || CanStillPrettyPrint()) {
|
|
return;
|
|
}
|
|
StartLayout(aIgnorePendingSheets);
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////////
|
|
|
|
bool
|
|
nsXMLContentSink::SetDocElement(int32_t aNameSpaceID,
|
|
nsAtom* aTagName,
|
|
nsIContent *aContent)
|
|
{
|
|
if (mDocElement)
|
|
return false;
|
|
|
|
mDocElement = aContent;
|
|
|
|
if (mXSLTProcessor) {
|
|
mDocumentChildren.AppendElement(aContent);
|
|
return true;
|
|
}
|
|
|
|
if (!mDocumentChildren.IsEmpty()) {
|
|
for (nsIContent* child : mDocumentChildren) {
|
|
mDocument->AppendChildTo(child, false);
|
|
}
|
|
mDocumentChildren.Clear();
|
|
}
|
|
|
|
// check for root elements that needs special handling for
|
|
// prettyprinting
|
|
if ((aNameSpaceID == kNameSpaceID_XBL &&
|
|
aTagName == nsGkAtoms::bindings) ||
|
|
(aNameSpaceID == kNameSpaceID_XSLT &&
|
|
(aTagName == nsGkAtoms::stylesheet ||
|
|
aTagName == nsGkAtoms::transform))) {
|
|
mPrettyPrintHasSpecialRoot = true;
|
|
if (mPrettyPrintXML) {
|
|
// In this case, disable script execution, stylesheet
|
|
// loading, and auto XLinks since we plan to prettyprint.
|
|
mDocument->ScriptLoader()->SetEnabled(false);
|
|
if (mCSSLoader) {
|
|
mCSSLoader->SetEnabled(false);
|
|
}
|
|
}
|
|
}
|
|
|
|
nsresult rv = mDocument->AppendChildTo(mDocElement, NotifyForDocElement());
|
|
if (NS_FAILED(rv)) {
|
|
// If we return false here, the caller will bail out because it won't
|
|
// find a parent content node to append to, which is fine.
|
|
return false;
|
|
}
|
|
|
|
if (aTagName == nsGkAtoms::html &&
|
|
aNameSpaceID == kNameSpaceID_XHTML) {
|
|
ProcessOfflineManifest(aContent);
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsXMLContentSink::HandleStartElement(const char16_t *aName,
|
|
const char16_t **aAtts,
|
|
uint32_t aAttsCount,
|
|
uint32_t aLineNumber,
|
|
uint32_t aColumnNumber)
|
|
{
|
|
return HandleStartElement(aName, aAtts, aAttsCount, aLineNumber,
|
|
aColumnNumber, true);
|
|
}
|
|
|
|
nsresult
|
|
nsXMLContentSink::HandleStartElement(const char16_t *aName,
|
|
const char16_t **aAtts,
|
|
uint32_t aAttsCount,
|
|
uint32_t aLineNumber,
|
|
uint32_t aColumnNumber,
|
|
bool aInterruptable)
|
|
{
|
|
MOZ_ASSERT(aAttsCount % 2 == 0, "incorrect aAttsCount");
|
|
// Adjust aAttsCount so it's the actual number of attributes
|
|
aAttsCount /= 2;
|
|
|
|
nsresult result = NS_OK;
|
|
bool appendContent = true;
|
|
nsCOMPtr<nsIContent> content;
|
|
|
|
// XXX Hopefully the parser will flag this before we get
|
|
// here. If we're in the epilog, there should be no
|
|
// new elements
|
|
MOZ_ASSERT(eXMLContentSinkState_InEpilog != mState);
|
|
|
|
FlushText();
|
|
DidAddContent();
|
|
|
|
mState = eXMLContentSinkState_InDocumentElement;
|
|
|
|
int32_t nameSpaceID;
|
|
RefPtr<nsAtom> prefix, localName;
|
|
nsContentUtils::SplitExpatName(aName, getter_AddRefs(prefix),
|
|
getter_AddRefs(localName), &nameSpaceID);
|
|
|
|
if (!OnOpenContainer(aAtts, aAttsCount, nameSpaceID, localName, aLineNumber)) {
|
|
return NS_OK;
|
|
}
|
|
|
|
RefPtr<mozilla::dom::NodeInfo> nodeInfo;
|
|
nodeInfo = mNodeInfoManager->GetNodeInfo(localName, prefix, nameSpaceID,
|
|
nsINode::ELEMENT_NODE);
|
|
|
|
result = CreateElement(aAtts, aAttsCount, nodeInfo, aLineNumber,
|
|
aColumnNumber, getter_AddRefs(content), &appendContent,
|
|
FROM_PARSER_NETWORK);
|
|
NS_ENSURE_SUCCESS(result, result);
|
|
|
|
// Have to do this before we push the new content on the stack... and have to
|
|
// do that before we set attributes, call BindToTree, etc. Ideally we'd push
|
|
// on the stack inside CreateElement (which is effectively what the HTML sink
|
|
// does), but that's hard with all the subclass overrides going on.
|
|
nsCOMPtr<nsIContent> parent = GetCurrentContent();
|
|
|
|
result = PushContent(content);
|
|
NS_ENSURE_SUCCESS(result, result);
|
|
|
|
// Set the attributes on the new content element
|
|
result = AddAttributes(aAtts, content->AsElement());
|
|
|
|
if (NS_OK == result) {
|
|
// Store the element
|
|
if (!SetDocElement(nameSpaceID, localName, content) && appendContent) {
|
|
NS_ENSURE_TRUE(parent, NS_ERROR_UNEXPECTED);
|
|
|
|
parent->AppendChildTo(content, false);
|
|
}
|
|
}
|
|
|
|
// Some HTML nodes need DoneCreatingElement() called to initialize
|
|
// properly (eg form state restoration).
|
|
if (nodeInfo->NamespaceID() == kNameSpaceID_XHTML) {
|
|
if (nodeInfo->NameAtom() == nsGkAtoms::input ||
|
|
nodeInfo->NameAtom() == nsGkAtoms::button ||
|
|
nodeInfo->NameAtom() == nsGkAtoms::menuitem ||
|
|
nodeInfo->NameAtom() == nsGkAtoms::audio ||
|
|
nodeInfo->NameAtom() == nsGkAtoms::video) {
|
|
content->DoneCreatingElement();
|
|
} else if (nodeInfo->NameAtom() == nsGkAtoms::head && !mCurrentHead) {
|
|
mCurrentHead = content;
|
|
}
|
|
}
|
|
|
|
if (IsMonolithicContainer(nodeInfo)) {
|
|
mInMonolithicContainer++;
|
|
}
|
|
|
|
if (!mXSLTProcessor) {
|
|
if (content == mDocElement) {
|
|
nsContentUtils::AddScriptRunner(
|
|
new nsDocElementCreatedNotificationRunner(mDocument));
|
|
|
|
if (aInterruptable && NS_SUCCEEDED(result) && mParser && !mParser->IsParserEnabled()) {
|
|
return NS_ERROR_HTMLPARSER_BLOCK;
|
|
}
|
|
} else if (!mCurrentHead) {
|
|
// This isn't the root and we're not inside an XHTML <head>.
|
|
// Might need to start layout
|
|
MaybeStartLayout(false);
|
|
}
|
|
}
|
|
|
|
return aInterruptable && NS_SUCCEEDED(result) ? DidProcessATokenImpl() :
|
|
result;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsXMLContentSink::HandleEndElement(const char16_t *aName)
|
|
{
|
|
return HandleEndElement(aName, true);
|
|
}
|
|
|
|
nsresult
|
|
nsXMLContentSink::HandleEndElement(const char16_t *aName,
|
|
bool aInterruptable)
|
|
{
|
|
nsresult result = NS_OK;
|
|
|
|
// XXX Hopefully the parser will flag this before we get
|
|
// here. If we're in the prolog or epilog, there should be
|
|
// no close tags for elements.
|
|
MOZ_ASSERT(eXMLContentSinkState_InDocumentElement == mState);
|
|
|
|
FlushText();
|
|
|
|
StackNode* sn = GetCurrentStackNode();
|
|
if (!sn) {
|
|
return NS_ERROR_UNEXPECTED;
|
|
}
|
|
|
|
nsCOMPtr<nsIContent> content;
|
|
sn->mContent.swap(content);
|
|
uint32_t numFlushed = sn->mNumFlushed;
|
|
|
|
PopContent();
|
|
NS_ASSERTION(content, "failed to pop content");
|
|
#ifdef DEBUG
|
|
// Check that we're closing the right thing
|
|
RefPtr<nsAtom> debugNameSpacePrefix, debugTagAtom;
|
|
int32_t debugNameSpaceID;
|
|
nsContentUtils::SplitExpatName(aName, getter_AddRefs(debugNameSpacePrefix),
|
|
getter_AddRefs(debugTagAtom),
|
|
&debugNameSpaceID);
|
|
// Check if we are closing a template element because template
|
|
// elements do not get pushed on the stack, the template
|
|
// element content is pushed instead.
|
|
bool isTemplateElement = debugTagAtom == nsGkAtoms::_template &&
|
|
debugNameSpaceID == kNameSpaceID_XHTML;
|
|
NS_ASSERTION(content->NodeInfo()->Equals(debugTagAtom, debugNameSpaceID) ||
|
|
(debugNameSpaceID == kNameSpaceID_MathML &&
|
|
content->NodeInfo()->NamespaceID() == kNameSpaceID_disabled_MathML &&
|
|
content->NodeInfo()->Equals(debugTagAtom)) ||
|
|
(debugNameSpaceID == kNameSpaceID_SVG &&
|
|
content->NodeInfo()->NamespaceID() == kNameSpaceID_disabled_SVG &&
|
|
content->NodeInfo()->Equals(debugTagAtom)) ||
|
|
isTemplateElement, "Wrong element being closed");
|
|
#endif
|
|
|
|
// Make sure to notify on our kids before we call out to any other code that
|
|
// might reenter us and call FlushTags, in a state in which we've already
|
|
// popped "content" from the stack but haven't notified on its kids yet.
|
|
int32_t stackLen = mContentStack.Length();
|
|
if (mNotifyLevel >= stackLen) {
|
|
if (numFlushed < content->GetChildCount()) {
|
|
NotifyAppend(content, numFlushed);
|
|
}
|
|
mNotifyLevel = stackLen - 1;
|
|
}
|
|
|
|
result = CloseElement(content);
|
|
|
|
if (mCurrentHead == content) {
|
|
mCurrentHead = nullptr;
|
|
}
|
|
|
|
if (mDocElement == content) {
|
|
// XXXbz for roots that don't want to be appended on open, we
|
|
// probably need to deal here.... (and stop appending them on open).
|
|
mState = eXMLContentSinkState_InEpilog;
|
|
|
|
// We might have had no occasion to start layout yet. Do so now.
|
|
MaybeStartLayout(false);
|
|
}
|
|
|
|
DidAddContent();
|
|
|
|
if (content->IsSVGElement(nsGkAtoms::svg)) {
|
|
FlushTags();
|
|
nsCOMPtr<nsIRunnable> event = new nsHtml5SVGLoadDispatcher(content);
|
|
if (NS_FAILED(content->OwnerDoc()->Dispatch(TaskCategory::Other,
|
|
event.forget()))) {
|
|
NS_WARNING("failed to dispatch svg load dispatcher");
|
|
}
|
|
}
|
|
|
|
return aInterruptable && NS_SUCCEEDED(result) ? DidProcessATokenImpl() :
|
|
result;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsXMLContentSink::HandleComment(const char16_t *aName)
|
|
{
|
|
FlushText();
|
|
|
|
RefPtr<Comment> comment = new Comment(mNodeInfoManager);
|
|
comment->SetText(nsDependentString(aName), false);
|
|
nsresult rv = AddContentAsLeaf(comment);
|
|
DidAddContent();
|
|
|
|
return NS_SUCCEEDED(rv) ? DidProcessATokenImpl() : rv;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsXMLContentSink::HandleCDataSection(const char16_t *aData,
|
|
uint32_t aLength)
|
|
{
|
|
// XSLT doesn't differentiate between text and cdata and wants adjacent
|
|
// textnodes merged, so add as text.
|
|
if (mXSLTProcessor) {
|
|
return AddText(aData, aLength);
|
|
}
|
|
|
|
FlushText();
|
|
|
|
RefPtr<CDATASection> cdata = new CDATASection(mNodeInfoManager);
|
|
cdata->SetText(aData, aLength, false);
|
|
nsresult rv = AddContentAsLeaf(cdata);
|
|
DidAddContent();
|
|
|
|
return NS_SUCCEEDED(rv) ? DidProcessATokenImpl() : rv;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsXMLContentSink::HandleDoctypeDecl(const nsAString & aSubset,
|
|
const nsAString & aName,
|
|
const nsAString & aSystemId,
|
|
const nsAString & aPublicId,
|
|
nsISupports* aCatalogData)
|
|
{
|
|
FlushText();
|
|
|
|
NS_ASSERTION(mDocument, "Shouldn't get here from a document fragment");
|
|
|
|
RefPtr<nsAtom> name = NS_Atomize(aName);
|
|
NS_ENSURE_TRUE(name, NS_ERROR_OUT_OF_MEMORY);
|
|
|
|
// Create a new doctype node
|
|
RefPtr<DocumentType> docType = NS_NewDOMDocumentType(mNodeInfoManager,
|
|
name, aPublicId,
|
|
aSystemId, aSubset);
|
|
|
|
MOZ_ASSERT(!aCatalogData, "Need to add back support for catalog style "
|
|
"sheets");
|
|
|
|
mDocumentChildren.AppendElement(docType);
|
|
DidAddContent();
|
|
return DidProcessATokenImpl();
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsXMLContentSink::HandleCharacterData(const char16_t *aData,
|
|
uint32_t aLength)
|
|
{
|
|
return HandleCharacterData(aData, aLength, true);
|
|
}
|
|
|
|
nsresult
|
|
nsXMLContentSink::HandleCharacterData(const char16_t *aData, uint32_t aLength,
|
|
bool aInterruptable)
|
|
{
|
|
nsresult rv = NS_OK;
|
|
if (aData && mState != eXMLContentSinkState_InProlog &&
|
|
mState != eXMLContentSinkState_InEpilog) {
|
|
rv = AddText(aData, aLength);
|
|
}
|
|
return aInterruptable && NS_SUCCEEDED(rv) ? DidProcessATokenImpl() : rv;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsXMLContentSink::HandleProcessingInstruction(const char16_t *aTarget,
|
|
const char16_t *aData)
|
|
{
|
|
FlushText();
|
|
|
|
const nsDependentString target(aTarget);
|
|
const nsDependentString data(aData);
|
|
|
|
RefPtr<ProcessingInstruction> node =
|
|
NS_NewXMLProcessingInstruction(mNodeInfoManager, target, data);
|
|
|
|
nsCOMPtr<nsIStyleSheetLinkingElement> ssle =
|
|
do_QueryInterface(ToSupports(node));
|
|
if (ssle) {
|
|
ssle->InitStyleLinkElement(false);
|
|
ssle->SetEnableUpdates(false);
|
|
mPrettyPrintXML = false;
|
|
}
|
|
|
|
nsresult rv = AddContentAsLeaf(node);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
DidAddContent();
|
|
|
|
if (ssle) {
|
|
// This is an xml-stylesheet processing instruction... but it might not be
|
|
// a CSS one if the type is set to something else.
|
|
ssle->SetEnableUpdates(true);
|
|
auto updateOrError =
|
|
ssle->UpdateStyleSheet(mRunsToCompletion ? nullptr : this);
|
|
if (updateOrError.isErr()) {
|
|
return updateOrError.unwrapErr();
|
|
}
|
|
|
|
auto update = updateOrError.unwrap();
|
|
if (update.WillNotify()) {
|
|
// Successfully started a stylesheet load
|
|
if (update.ShouldBlock() && !mRunsToCompletion) {
|
|
++mPendingSheetCount;
|
|
mScriptLoader->AddParserBlockingScriptExecutionBlocker();
|
|
}
|
|
return NS_OK;
|
|
}
|
|
}
|
|
|
|
// Check whether this is a CSS stylesheet PI. Make sure the type
|
|
// handling here matches
|
|
// XMLStylesheetProcessingInstruction::GetStyleSheetInfo.
|
|
nsAutoString type;
|
|
nsContentUtils::GetPseudoAttributeValue(data, nsGkAtoms::type, type);
|
|
nsAutoString mimeType, notUsed;
|
|
nsContentUtils::SplitMimeType(type, mimeType, notUsed);
|
|
|
|
if (mState != eXMLContentSinkState_InProlog ||
|
|
!target.EqualsLiteral("xml-stylesheet") ||
|
|
mimeType.IsEmpty() ||
|
|
mimeType.LowerCaseEqualsLiteral("text/css")) {
|
|
// Either not a useful stylesheet PI, or a CSS stylesheet PI that
|
|
// got handled above by the "ssle" bits. We're done here.
|
|
return DidProcessATokenImpl();
|
|
}
|
|
|
|
// If it's not a CSS stylesheet PI...
|
|
nsAutoString href, title, media;
|
|
bool isAlternate = false;
|
|
|
|
// If there was no href, we can't do anything with this PI
|
|
if (!ParsePIData(data, href, title, media, isAlternate)) {
|
|
return DidProcessATokenImpl();
|
|
}
|
|
|
|
// <?xml-stylesheet?> processing instructions don't have a referrerpolicy
|
|
// pseudo-attribute, so we pass in an empty string
|
|
rv = MaybeProcessXSLTLink(node, href, isAlternate, title, type, media,
|
|
EmptyString());
|
|
return NS_SUCCEEDED(rv) ? DidProcessATokenImpl() : rv;
|
|
}
|
|
|
|
/* static */
|
|
bool
|
|
nsXMLContentSink::ParsePIData(const nsString &aData, nsString &aHref,
|
|
nsString &aTitle, nsString &aMedia,
|
|
bool &aIsAlternate)
|
|
{
|
|
// If there was no href, we can't do anything with this PI
|
|
if (!nsContentUtils::GetPseudoAttributeValue(aData, nsGkAtoms::href, aHref)) {
|
|
return false;
|
|
}
|
|
|
|
nsContentUtils::GetPseudoAttributeValue(aData, nsGkAtoms::title, aTitle);
|
|
|
|
nsContentUtils::GetPseudoAttributeValue(aData, nsGkAtoms::media, aMedia);
|
|
|
|
nsAutoString alternate;
|
|
nsContentUtils::GetPseudoAttributeValue(aData,
|
|
nsGkAtoms::alternate,
|
|
alternate);
|
|
|
|
aIsAlternate = alternate.EqualsLiteral("yes");
|
|
|
|
return true;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsXMLContentSink::HandleXMLDeclaration(const char16_t *aVersion,
|
|
const char16_t *aEncoding,
|
|
int32_t aStandalone)
|
|
{
|
|
mDocument->SetXMLDeclaration(aVersion, aEncoding, aStandalone);
|
|
|
|
return DidProcessATokenImpl();
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsXMLContentSink::ReportError(const char16_t* aErrorText,
|
|
const char16_t* aSourceText,
|
|
nsIScriptError *aError,
|
|
bool *_retval)
|
|
{
|
|
MOZ_ASSERT(aError && aSourceText && aErrorText, "Check arguments!!!");
|
|
nsresult rv = NS_OK;
|
|
|
|
// The expat driver should report the error. We're just cleaning up the mess.
|
|
*_retval = true;
|
|
|
|
mPrettyPrintXML = false;
|
|
|
|
mState = eXMLContentSinkState_InProlog;
|
|
|
|
// XXX need to stop scripts here -- hsivonen
|
|
|
|
// stop observing in order to avoid crashing when removing content
|
|
mDocument->RemoveObserver(this);
|
|
mIsDocumentObserver = false;
|
|
|
|
// Clear the current content
|
|
mDocumentChildren.Clear();
|
|
while (mDocument->GetLastChild()) {
|
|
mDocument->GetLastChild()->Remove();
|
|
}
|
|
mDocElement = nullptr;
|
|
|
|
// Clear any buffered-up text we have. It's enough to set the length to 0.
|
|
// The buffer itself is allocated when we're created and deleted in our
|
|
// destructor, so don't mess with it.
|
|
mTextLength = 0;
|
|
|
|
if (mXSLTProcessor) {
|
|
// Get rid of the XSLT processor.
|
|
mXSLTProcessor->CancelLoads();
|
|
mXSLTProcessor = nullptr;
|
|
}
|
|
|
|
// release the nodes on stack
|
|
mContentStack.Clear();
|
|
mNotifyLevel = 0;
|
|
|
|
// return leaving the document empty if we're asked to not add a <parsererror> root node
|
|
if (mDocument->SuppressParserErrorElement()) {
|
|
return NS_OK;
|
|
}
|
|
|
|
// prepare to set <parsererror> as the document root
|
|
rv = HandleProcessingInstruction(u"xml-stylesheet",
|
|
u"href=\"chrome://global/locale/intl.css\" type=\"text/css\"");
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
const char16_t* noAtts[] = { 0, 0 };
|
|
|
|
NS_NAMED_LITERAL_STRING(errorNs,
|
|
"http://www.mozilla.org/newlayout/xml/parsererror.xml");
|
|
|
|
nsAutoString parsererror(errorNs);
|
|
parsererror.Append((char16_t)0xFFFF);
|
|
parsererror.AppendLiteral("parsererror");
|
|
|
|
rv = HandleStartElement(parsererror.get(), noAtts, 0, (uint32_t)-1,
|
|
false);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
rv = HandleCharacterData(aErrorText, NS_strlen(aErrorText), false);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
nsAutoString sourcetext(errorNs);
|
|
sourcetext.Append((char16_t)0xFFFF);
|
|
sourcetext.AppendLiteral("sourcetext");
|
|
|
|
rv = HandleStartElement(sourcetext.get(), noAtts, 0, (uint32_t)-1,
|
|
false);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
rv = HandleCharacterData(aSourceText, NS_strlen(aSourceText), false);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
rv = HandleEndElement(sourcetext.get(), false);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
rv = HandleEndElement(parsererror.get(), false);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
FlushTags();
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
nsXMLContentSink::AddAttributes(const char16_t** aAtts,
|
|
Element* aContent)
|
|
{
|
|
// Add tag attributes to the content attributes
|
|
RefPtr<nsAtom> prefix, localName;
|
|
while (*aAtts) {
|
|
int32_t nameSpaceID;
|
|
nsContentUtils::SplitExpatName(aAtts[0], getter_AddRefs(prefix),
|
|
getter_AddRefs(localName), &nameSpaceID);
|
|
|
|
// Add attribute to content
|
|
aContent->SetAttr(nameSpaceID, localName, prefix,
|
|
nsDependentString(aAtts[1]), false);
|
|
aAtts += 2;
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
#define NS_ACCUMULATION_BUFFER_SIZE 4096
|
|
|
|
nsresult
|
|
nsXMLContentSink::AddText(const char16_t* aText,
|
|
int32_t aLength)
|
|
{
|
|
// Copy data from string into our buffer; flush buffer when it fills up.
|
|
int32_t offset = 0;
|
|
while (0 != aLength) {
|
|
int32_t amount = NS_ACCUMULATION_BUFFER_SIZE - mTextLength;
|
|
if (0 == amount) {
|
|
nsresult rv = FlushText(false);
|
|
if (NS_WARN_IF(NS_FAILED(rv))) {
|
|
return rv;
|
|
}
|
|
MOZ_ASSERT(mTextLength == 0);
|
|
amount = NS_ACCUMULATION_BUFFER_SIZE;
|
|
}
|
|
|
|
if (amount > aLength) {
|
|
amount = aLength;
|
|
}
|
|
memcpy(&mText[mTextLength], &aText[offset], sizeof(char16_t) * amount);
|
|
mTextLength += amount;
|
|
offset += amount;
|
|
aLength -= amount;
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
void
|
|
nsXMLContentSink::FlushPendingNotifications(FlushType aType)
|
|
{
|
|
// Only flush tags if we're not doing the notification ourselves
|
|
// (since we aren't reentrant)
|
|
if (!mInNotification) {
|
|
if (mIsDocumentObserver) {
|
|
// Only flush if we're still a document observer (so that our child
|
|
// counts should be correct).
|
|
if (aType >= FlushType::ContentAndNotify) {
|
|
FlushTags();
|
|
}
|
|
else {
|
|
FlushText(false);
|
|
}
|
|
}
|
|
if (aType >= FlushType::EnsurePresShellInitAndFrames) {
|
|
// Make sure that layout has started so that the reflow flush
|
|
// will actually happen.
|
|
MaybeStartLayout(true);
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* NOTE!! Forked from SinkContext. Please keep in sync.
|
|
*
|
|
* Flush all elements that have been seen so far such that
|
|
* they are visible in the tree. Specifically, make sure
|
|
* that they are all added to their respective parents.
|
|
* Also, do notification at the top for all content that
|
|
* has been newly added so that the frame tree is complete.
|
|
*/
|
|
nsresult
|
|
nsXMLContentSink::FlushTags()
|
|
{
|
|
mDeferredFlushTags = false;
|
|
bool oldBeganUpdate = mBeganUpdate;
|
|
uint32_t oldUpdates = mUpdatesInNotification;
|
|
|
|
mUpdatesInNotification = 0;
|
|
++mInNotification;
|
|
{
|
|
// Scope so we call EndUpdate before we decrease mInNotification
|
|
mozAutoDocUpdate updateBatch(mDocument, true);
|
|
mBeganUpdate = true;
|
|
|
|
// Don't release last text node in case we need to add to it again
|
|
FlushText(false);
|
|
|
|
// Start from the base of the stack (growing downward) and do
|
|
// a notification from the node that is closest to the root of
|
|
// tree for any content that has been added.
|
|
|
|
int32_t stackPos;
|
|
int32_t stackLen = mContentStack.Length();
|
|
bool flushed = false;
|
|
uint32_t childCount;
|
|
nsIContent* content;
|
|
|
|
for (stackPos = 0; stackPos < stackLen; ++stackPos) {
|
|
content = mContentStack[stackPos].mContent;
|
|
childCount = content->GetChildCount();
|
|
|
|
if (!flushed && (mContentStack[stackPos].mNumFlushed < childCount)) {
|
|
NotifyAppend(content, mContentStack[stackPos].mNumFlushed);
|
|
flushed = true;
|
|
}
|
|
|
|
mContentStack[stackPos].mNumFlushed = childCount;
|
|
}
|
|
mNotifyLevel = stackLen - 1;
|
|
}
|
|
--mInNotification;
|
|
|
|
if (mUpdatesInNotification > 1) {
|
|
UpdateChildCounts();
|
|
}
|
|
|
|
mUpdatesInNotification = oldUpdates;
|
|
mBeganUpdate = oldBeganUpdate;
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
/**
|
|
* NOTE!! Forked from SinkContext. Please keep in sync.
|
|
*/
|
|
void
|
|
nsXMLContentSink::UpdateChildCounts()
|
|
{
|
|
// Start from the top of the stack (growing upwards) and see if any
|
|
// new content has been appended. If so, we recognize that reflows
|
|
// have been generated for it and we should make sure that no
|
|
// further reflows occur. Note that we have to include stackPos == 0
|
|
// to properly notify on kids of <html>.
|
|
int32_t stackLen = mContentStack.Length();
|
|
int32_t stackPos = stackLen - 1;
|
|
while (stackPos >= 0) {
|
|
StackNode & node = mContentStack[stackPos];
|
|
node.mNumFlushed = node.mContent->GetChildCount();
|
|
|
|
stackPos--;
|
|
}
|
|
mNotifyLevel = stackLen - 1;
|
|
}
|
|
|
|
bool
|
|
nsXMLContentSink::IsMonolithicContainer(mozilla::dom::NodeInfo* aNodeInfo)
|
|
{
|
|
return ((aNodeInfo->NamespaceID() == kNameSpaceID_XHTML &&
|
|
(aNodeInfo->NameAtom() == nsGkAtoms::tr ||
|
|
aNodeInfo->NameAtom() == nsGkAtoms::select ||
|
|
aNodeInfo->NameAtom() == nsGkAtoms::object)) ||
|
|
(aNodeInfo->NamespaceID() == kNameSpaceID_MathML &&
|
|
(aNodeInfo->NameAtom() == nsGkAtoms::math))
|
|
);
|
|
}
|
|
|
|
void
|
|
nsXMLContentSink::ContinueInterruptedParsingIfEnabled()
|
|
{
|
|
if (mParser && mParser->IsParserEnabled()) {
|
|
GetParser()->ContinueInterruptedParsing();
|
|
}
|
|
}
|
|
|
|
void
|
|
nsXMLContentSink::ContinueInterruptedParsingAsync()
|
|
{
|
|
nsCOMPtr<nsIRunnable> ev =
|
|
NewRunnableMethod("nsXMLContentSink::ContinueInterruptedParsingIfEnabled",
|
|
this,
|
|
&nsXMLContentSink::ContinueInterruptedParsingIfEnabled);
|
|
|
|
mDocument->Dispatch(mozilla::TaskCategory::Other, ev.forget());
|
|
}
|
|
|
|
nsIParser*
|
|
nsXMLContentSink::GetParser()
|
|
{
|
|
return static_cast<nsIParser*>(mParser.get());
|
|
}
|