forked from mirrors/gecko-dev
		
	All of this stuff has been converted to static registration, making this file unneeded. Differential Revision: https://phabricator.services.mozilla.com/D202291
		
			
				
	
	
		
			338 lines
		
	
	
	
		
			11 KiB
		
	
	
	
		
			C++
		
	
	
	
	
	
			
		
		
	
	
			338 lines
		
	
	
	
		
			11 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 "mozilla/dom/XMLDocument.h"
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#include "nsCharsetSource.h"
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#include "nsIXMLContentSink.h"
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#include "nsPresContext.h"
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#include "nsIContent.h"
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#include "nsIDocShell.h"
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#include "nsHTMLParts.h"
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#include "nsCOMPtr.h"
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#include "nsString.h"
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#include "nsIURI.h"
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#include "nsNetUtil.h"
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#include "nsError.h"
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#include "nsIPrincipal.h"
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#include "mozilla/dom/Attr.h"
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#include "nsCExternalHandlerService.h"
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#include "nsMimeTypes.h"
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#include "nsContentUtils.h"
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#include "nsThreadUtils.h"
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#include "nsJSUtils.h"
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#include "nsCRT.h"
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#include "nsComponentManagerUtils.h"
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#include "nsContentCreatorFunctions.h"
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#include "nsContentPolicyUtils.h"
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#include "nsIConsoleService.h"
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#include "nsIScriptError.h"
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#include "nsHTMLDocument.h"
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#include "nsParser.h"
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#include "mozilla/BasicEvents.h"
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#include "mozilla/EventDispatcher.h"
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#include "mozilla/Encoding.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/DocGroup.h"
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#include "mozilla/dom/XMLDocumentBinding.h"
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#include "mozilla/dom/DocumentBinding.h"
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using namespace mozilla;
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using namespace mozilla::dom;
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// ==================================================================
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// =
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// ==================================================================
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nsresult NS_NewDOMDocument(Document** aInstancePtrResult,
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                           const nsAString& aNamespaceURI,
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                           const nsAString& aQualifiedName,
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                           DocumentType* aDoctype, nsIURI* aDocumentURI,
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                           nsIURI* aBaseURI, nsIPrincipal* aPrincipal,
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                           bool aLoadedAsData, nsIGlobalObject* aEventObject,
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                           DocumentFlavor aFlavor) {
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  // Note: can't require that aDocumentURI/aBaseURI/aPrincipal be non-null,
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  // since at least one caller (XMLHttpRequest) doesn't have decent args to
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  // pass in.
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  nsresult rv;
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  *aInstancePtrResult = nullptr;
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  nsCOMPtr<Document> d;
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  bool isHTML = false;
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  bool isXHTML = false;
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  if (aFlavor == DocumentFlavorSVG) {
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    rv = NS_NewSVGDocument(getter_AddRefs(d), aPrincipal, aPrincipal);
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  } else if (aFlavor == DocumentFlavorHTML) {
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    rv = NS_NewHTMLDocument(getter_AddRefs(d), aPrincipal, aPrincipal);
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    isHTML = true;
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  } else if (aFlavor == DocumentFlavorXML) {
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    rv = NS_NewXMLDocument(getter_AddRefs(d), aPrincipal, aPrincipal);
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  } else if (aFlavor == DocumentFlavorPlain) {
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    rv = NS_NewXMLDocument(getter_AddRefs(d), aPrincipal, aPrincipal,
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                           aLoadedAsData, true);
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  } else if (aDoctype) {
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    MOZ_ASSERT(aFlavor == DocumentFlavorLegacyGuess);
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    nsAutoString publicId, name;
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    aDoctype->GetPublicId(publicId);
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    if (publicId.IsEmpty()) {
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      aDoctype->GetName(name);
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    }
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    if (name.EqualsLiteral("html") ||
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        publicId.EqualsLiteral("-//W3C//DTD HTML 4.01//EN") ||
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        publicId.EqualsLiteral("-//W3C//DTD HTML 4.01 Frameset//EN") ||
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        publicId.EqualsLiteral("-//W3C//DTD HTML 4.01 Transitional//EN") ||
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        publicId.EqualsLiteral("-//W3C//DTD HTML 4.0//EN") ||
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        publicId.EqualsLiteral("-//W3C//DTD HTML 4.0 Frameset//EN") ||
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        publicId.EqualsLiteral("-//W3C//DTD HTML 4.0 Transitional//EN")) {
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      rv = NS_NewHTMLDocument(getter_AddRefs(d), aPrincipal, aPrincipal);
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      isHTML = true;
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    } else if (publicId.EqualsLiteral("-//W3C//DTD XHTML 1.0 Strict//EN") ||
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               publicId.EqualsLiteral(
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                   "-//W3C//DTD XHTML 1.0 Transitional//EN") ||
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               publicId.EqualsLiteral("-//W3C//DTD XHTML 1.0 Frameset//EN")) {
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      rv = NS_NewHTMLDocument(getter_AddRefs(d), aPrincipal, aPrincipal);
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      isHTML = true;
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      isXHTML = true;
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    } else if (publicId.EqualsLiteral("-//W3C//DTD SVG 1.1//EN")) {
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      rv = NS_NewSVGDocument(getter_AddRefs(d), aPrincipal, aPrincipal);
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    }
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    // XXX Add support for XUL documents.
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    else {
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      rv = NS_NewXMLDocument(getter_AddRefs(d), aPrincipal, aPrincipal);
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    }
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  } else {
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    MOZ_ASSERT(aFlavor == DocumentFlavorLegacyGuess);
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    rv = NS_NewXMLDocument(getter_AddRefs(d), aPrincipal, aPrincipal);
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  }
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  if (NS_FAILED(rv)) {
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    return rv;
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  }
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  if (isHTML) {
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    d->SetCompatibilityMode(eCompatibility_FullStandards);
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    d->AsHTMLDocument()->SetIsXHTML(isXHTML);
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  }
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  d->SetLoadedAsData(aLoadedAsData, /* aConsiderForMemoryReporting */ true);
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  d->SetDocumentURI(aDocumentURI);
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  d->SetBaseURI(aBaseURI);
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  // We need to set the script handling object after we set the principal such
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  // that the doc group is assigned correctly.
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  if (nsCOMPtr<nsIScriptGlobalObject> sgo = do_QueryInterface(aEventObject)) {
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    d->SetScriptHandlingObject(sgo);
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  } else if (aEventObject) {
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    d->SetScopeObject(aEventObject);
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  }
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  // XMLDocuments and documents "created in memory" get to be UTF-8 by default,
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  // unlike the legacy HTML mess
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  d->SetDocumentCharacterSet(UTF_8_ENCODING);
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  if (aDoctype) {
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    ErrorResult result;
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    d->AppendChild(*aDoctype, result);
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    // Need to WouldReportJSException() if our callee can throw a JS
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    // exception (which it can) and we're neither propagating the
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    // error out nor unconditionally suppressing it.
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    result.WouldReportJSException();
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    if (NS_WARN_IF(result.Failed())) {
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      return result.StealNSResult();
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    }
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  }
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  if (!aQualifiedName.IsEmpty()) {
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    ErrorResult result;
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    ElementCreationOptionsOrString options;
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    Unused << options.SetAsString();
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    nsCOMPtr<Element> root =
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        d->CreateElementNS(aNamespaceURI, aQualifiedName, options, result);
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    if (NS_WARN_IF(result.Failed())) {
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      return result.StealNSResult();
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    }
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    d->AppendChild(*root, result);
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    // Need to WouldReportJSException() if our callee can throw a JS
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    // exception (which it can) and we're neither propagating the
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    // error out nor unconditionally suppressing it.
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    result.WouldReportJSException();
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    if (NS_WARN_IF(result.Failed())) {
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      return result.StealNSResult();
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    }
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  }
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  d.forget(aInstancePtrResult);
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  return NS_OK;
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}
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nsresult NS_NewXMLDocument(Document** aInstancePtrResult,
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                           nsIPrincipal* aPrincipal,
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                           nsIPrincipal* aPartitionedPrincipal,
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                           bool aLoadedAsData, bool aIsPlainDocument) {
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  RefPtr<XMLDocument> doc = new XMLDocument();
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  nsresult rv = doc->Init(aPrincipal, aPartitionedPrincipal);
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  if (NS_FAILED(rv)) {
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    *aInstancePtrResult = nullptr;
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    return rv;
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  }
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  doc->SetLoadedAsData(aLoadedAsData, /* aConsiderForMemoryReporting */ true);
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  doc->mIsPlainDocument = aIsPlainDocument;
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  doc.forget(aInstancePtrResult);
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  return NS_OK;
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}
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namespace mozilla::dom {
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XMLDocument::XMLDocument(const char* aContentType)
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    : Document(aContentType),
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      mChannelIsPending(false),
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      mIsPlainDocument(false),
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      mSuppressParserErrorElement(false),
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      mSuppressParserErrorConsoleMessages(false) {
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  mType = eGenericXML;
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}
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nsresult XMLDocument::Init(nsIPrincipal* aPrincipal,
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                           nsIPrincipal* aPartitionedPrincipal) {
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  nsresult rv = Document::Init(aPrincipal, aPartitionedPrincipal);
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  NS_ENSURE_SUCCESS(rv, rv);
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  return rv;
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}
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void XMLDocument::Reset(nsIChannel* aChannel, nsILoadGroup* aLoadGroup) {
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  Document::Reset(aChannel, aLoadGroup);
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}
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void XMLDocument::ResetToURI(nsIURI* aURI, nsILoadGroup* aLoadGroup,
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                             nsIPrincipal* aPrincipal,
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                             nsIPrincipal* aPartitionedPrincipal) {
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  if (mChannelIsPending) {
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    StopDocumentLoad();
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    mChannel->CancelWithReason(NS_BINDING_ABORTED,
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                               "XMLDocument::ResetToURI"_ns);
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    mChannelIsPending = false;
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  }
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  Document::ResetToURI(aURI, aLoadGroup, aPrincipal, aPartitionedPrincipal);
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}
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void XMLDocument::SetSuppressParserErrorElement(bool aSuppress) {
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  mSuppressParserErrorElement = aSuppress;
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}
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bool XMLDocument::SuppressParserErrorElement() {
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  return mSuppressParserErrorElement;
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}
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void XMLDocument::SetSuppressParserErrorConsoleMessages(bool aSuppress) {
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  mSuppressParserErrorConsoleMessages = aSuppress;
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}
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bool XMLDocument::SuppressParserErrorConsoleMessages() {
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  return mSuppressParserErrorConsoleMessages;
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}
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nsresult XMLDocument::StartDocumentLoad(
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    const char* aCommand, nsIChannel* aChannel, nsILoadGroup* aLoadGroup,
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    nsISupports* aContainer, nsIStreamListener** aDocListener, bool aReset) {
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  nsresult rv = Document::StartDocumentLoad(aCommand, aChannel, aLoadGroup,
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                                            aContainer, aDocListener, aReset);
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  if (NS_FAILED(rv)) return rv;
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  int32_t charsetSource = kCharsetFromDocTypeDefault;
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  NotNull<const Encoding*> encoding = UTF_8_ENCODING;
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  TryChannelCharset(aChannel, charsetSource, encoding, nullptr);
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  nsCOMPtr<nsIURI> aUrl;
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  rv = aChannel->GetURI(getter_AddRefs(aUrl));
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  if (NS_FAILED(rv)) return rv;
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  mParser = new nsParser();
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  nsCOMPtr<nsIXMLContentSink> sink;
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  nsCOMPtr<nsIDocShell> docShell;
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  if (aContainer) {
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    docShell = do_QueryInterface(aContainer);
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    NS_ENSURE_TRUE(docShell, NS_ERROR_FAILURE);
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  }
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  rv = NS_NewXMLContentSink(getter_AddRefs(sink), this, aUrl, docShell,
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                            aChannel);
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  NS_ENSURE_SUCCESS(rv, rv);
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  // Set the parser as the stream listener for the document loader...
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  rv = CallQueryInterface(mParser, aDocListener);
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  NS_ENSURE_SUCCESS(rv, rv);
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  NS_ASSERTION(mChannel, "How can we not have a channel here?");
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  mChannelIsPending = true;
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  SetDocumentCharacterSet(encoding);
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  mParser->SetDocumentCharset(encoding, charsetSource);
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  mParser->SetCommand(aCommand);
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  mParser->SetContentSink(sink);
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  mParser->Parse(aUrl);
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  return NS_OK;
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}
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void XMLDocument::EndLoad() {
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  mChannelIsPending = false;
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  mSynchronousDOMContentLoaded = mLoadedAsData;
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  Document::EndLoad();
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  if (mSynchronousDOMContentLoaded) {
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    mSynchronousDOMContentLoaded = false;
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    Document::SetReadyStateInternal(Document::READYSTATE_COMPLETE);
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    // Generate a document load event for the case when an XML
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    // document was loaded as pure data without any presentation
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    // attached to it.
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    WidgetEvent event(true, eLoad);
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    EventDispatcher::Dispatch(this, nullptr, &event);
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  }
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}
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/* virtual */
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void XMLDocument::DocAddSizeOfExcludingThis(nsWindowSizes& aWindowSizes) const {
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  Document::DocAddSizeOfExcludingThis(aWindowSizes);
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}
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// Document interface
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nsresult XMLDocument::Clone(dom::NodeInfo* aNodeInfo, nsINode** aResult) const {
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  NS_ASSERTION(aNodeInfo->NodeInfoManager() == mNodeInfoManager,
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               "Can't import this document into another document!");
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  RefPtr<XMLDocument> clone = new XMLDocument();
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  nsresult rv = CloneDocHelper(clone);
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  NS_ENSURE_SUCCESS(rv, rv);
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  // State from XMLDocument
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  clone->mIsPlainDocument = mIsPlainDocument;
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  clone.forget(aResult);
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  return NS_OK;
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}
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JSObject* XMLDocument::WrapNode(JSContext* aCx,
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                                JS::Handle<JSObject*> aGivenProto) {
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  if (mIsPlainDocument) {
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    return Document_Binding::Wrap(aCx, this, aGivenProto);
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  }
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  return XMLDocument_Binding::Wrap(aCx, this, aGivenProto);
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}
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}  // namespace mozilla::dom
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