mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
synced 2024-09-13 09:24:08 -07:00
720 lines
21 KiB
C++
720 lines
21 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is Mozilla Communicator client code.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 1998
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Pierre Phaneuf <pp@ludusdesign.com>
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either of the GNU General Public License Version 2 or later (the "GPL"),
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* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#include "nsXMLDocument.h"
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#include "nsParserCIID.h"
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#include "nsIParser.h"
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#include "nsIXMLContentSink.h"
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#include "nsIPresShell.h"
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#include "nsPresContext.h"
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#include "nsIContent.h"
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#include "nsIContentViewerContainer.h"
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#include "nsIContentViewer.h"
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#include "nsIDocShell.h"
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#include "nsIMarkupDocumentViewer.h"
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#include "nsHTMLParts.h"
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#include "nsHTMLStyleSheet.h"
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#include "nsIHTMLCSSStyleSheet.h"
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#include "nsIComponentManager.h"
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#include "nsIDOMComment.h"
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#include "nsIDOMElement.h"
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#include "nsIDOMText.h"
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#include "nsIBaseWindow.h"
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#include "nsIDOMWindow.h"
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#include "nsIDOMDocumentType.h"
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#include "nsINameSpaceManager.h"
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#include "nsCOMPtr.h"
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#include "nsXPIDLString.h"
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#include "nsIHttpChannel.h"
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#include "nsIURI.h"
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#include "nsIServiceManager.h"
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#include "nsICharsetAlias.h"
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#include "nsICharsetAlias.h"
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#include "nsNetUtil.h"
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#include "nsDOMError.h"
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#include "nsIScriptSecurityManager.h"
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#include "nsIPrincipal.h"
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#include "nsLayoutCID.h"
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#include "nsDOMAttribute.h"
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#include "nsGUIEvent.h"
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#include "nsIFIXptr.h"
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#include "nsIXPointer.h"
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#include "nsCExternalHandlerService.h"
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#include "nsNetUtil.h"
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#include "nsMimeTypes.h"
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#include "nsIEventListenerManager.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 "nsIWindowWatcher.h"
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#include "nsIAuthPrompt.h"
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#include "nsIScriptGlobalObjectOwner.h"
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#include "nsIJSContextStack.h"
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#include "nsContentCreatorFunctions.h"
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#include "nsIDOMUserDataHandler.h"
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#include "nsEventDispatcher.h"
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#include "nsNodeUtils.h"
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// ==================================================================
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// =
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// ==================================================================
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nsresult
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NS_NewDOMDocument(nsIDOMDocument** aInstancePtrResult,
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const nsAString& aNamespaceURI,
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const nsAString& aQualifiedName,
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nsIDOMDocumentType* aDoctype,
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nsIURI* aDocumentURI,
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nsIURI* aBaseURI,
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nsIPrincipal* aPrincipal)
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{
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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 = nsnull;
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nsRefPtr<nsXMLDocument> doc = new nsXMLDocument();
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if (!doc)
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return NS_ERROR_OUT_OF_MEMORY;
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rv = doc->Init();
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if (NS_FAILED(rv)) {
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return rv;
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}
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doc->nsDocument::SetDocumentURI(aDocumentURI);
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// Must set the principal first, since SetBaseURI checks it.
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doc->SetPrincipal(aPrincipal);
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doc->SetBaseURI(aBaseURI);
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if (aDoctype) {
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nsCOMPtr<nsIDOMNode> tmpNode;
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rv = doc->AppendChild(aDoctype, getter_AddRefs(tmpNode));
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NS_ENSURE_SUCCESS(rv, rv);
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}
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if (!aQualifiedName.IsEmpty()) {
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nsCOMPtr<nsIDOMElement> root;
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rv = doc->CreateElementNS(aNamespaceURI, aQualifiedName,
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getter_AddRefs(root));
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NS_ENSURE_SUCCESS(rv, rv);
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nsCOMPtr<nsIDOMNode> tmpNode;
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rv = doc->AppendChild(root, getter_AddRefs(tmpNode));
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NS_ENSURE_SUCCESS(rv, rv);
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}
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*aInstancePtrResult = doc;
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NS_ADDREF(*aInstancePtrResult);
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return NS_OK;
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}
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nsresult
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NS_NewXMLDocument(nsIDocument** aInstancePtrResult)
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{
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nsXMLDocument* doc = new nsXMLDocument();
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NS_ENSURE_TRUE(doc, NS_ERROR_OUT_OF_MEMORY);
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NS_ADDREF(doc);
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nsresult rv = doc->Init();
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if (NS_FAILED(rv)) {
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NS_RELEASE(doc);
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}
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*aInstancePtrResult = doc;
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return rv;
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}
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// NOTE! nsDocument::operator new() zeroes out all members, so don't
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// bother initializing members to 0.
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nsXMLDocument::nsXMLDocument(const char* aContentType)
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: nsDocument(aContentType),
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mAsync(PR_TRUE)
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{
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// NOTE! nsDocument::operator new() zeroes out all members, so don't
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// bother initializing members to 0.
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}
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nsXMLDocument::~nsXMLDocument()
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{
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// XXX We rather crash than hang
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mLoopingForSyncLoad = PR_FALSE;
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}
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NS_IMPL_CYCLE_COLLECTION_CLASS(nsXMLDocument)
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN_INHERITED(nsXMLDocument, nsDocument)
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE_NSCOMPTR(mScriptContext)
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
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// QueryInterface implementation for nsXMLDocument
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NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION_INHERITED(nsXMLDocument)
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NS_INTERFACE_MAP_ENTRY(nsIInterfaceRequestor)
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NS_INTERFACE_MAP_ENTRY(nsIChannelEventSink)
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NS_INTERFACE_MAP_ENTRY(nsIDOMXMLDocument)
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NS_INTERFACE_MAP_ENTRY_CONTENT_CLASSINFO(XMLDocument)
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NS_INTERFACE_MAP_END_INHERITING(nsDocument)
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NS_IMPL_ADDREF_INHERITED(nsXMLDocument, nsDocument)
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NS_IMPL_RELEASE_INHERITED(nsXMLDocument, nsDocument)
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nsresult
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nsXMLDocument::Init()
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{
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nsresult rv = nsDocument::Init();
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NS_ENSURE_SUCCESS(rv, rv);
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return rv;
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}
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void
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nsXMLDocument::Reset(nsIChannel* aChannel, nsILoadGroup* aLoadGroup)
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{
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nsDocument::Reset(aChannel, aLoadGroup);
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mScriptContext = nsnull;
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}
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void
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nsXMLDocument::ResetToURI(nsIURI *aURI, nsILoadGroup *aLoadGroup,
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nsIPrincipal* aPrincipal)
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{
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if (mChannelIsPending) {
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StopDocumentLoad();
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mChannel->Cancel(NS_BINDING_ABORTED);
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mChannelIsPending = nsnull;
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}
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nsDocument::ResetToURI(aURI, aLoadGroup, aPrincipal);
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}
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/////////////////////////////////////////////////////
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// nsIInterfaceRequestor methods:
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//
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NS_IMETHODIMP
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nsXMLDocument::GetInterface(const nsIID& aIID, void** aSink)
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{
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if (aIID.Equals(NS_GET_IID(nsIAuthPrompt))) {
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NS_ENSURE_ARG_POINTER(aSink);
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*aSink = nsnull;
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nsresult rv;
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nsCOMPtr<nsIWindowWatcher> ww(do_GetService(NS_WINDOWWATCHER_CONTRACTID, &rv));
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if (NS_FAILED(rv))
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return rv;
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nsCOMPtr<nsIAuthPrompt> prompt;
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rv = ww->GetNewAuthPrompter(nsnull, getter_AddRefs(prompt));
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if (NS_FAILED(rv))
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return rv;
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nsIAuthPrompt *p = prompt.get();
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NS_ADDREF(p);
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*aSink = p;
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return NS_OK;
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}
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return QueryInterface(aIID, aSink);
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}
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// nsIChannelEventSink
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NS_IMETHODIMP
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nsXMLDocument::OnChannelRedirect(nsIChannel *aOldChannel,
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nsIChannel *aNewChannel,
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PRUint32 aFlags)
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{
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NS_PRECONDITION(aNewChannel, "Redirecting to null channel?");
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nsCOMPtr<nsIURI> newLocation;
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nsresult rv = aNewChannel->GetURI(getter_AddRefs(newLocation)); // The redirected URI
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if (NS_FAILED(rv))
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return rv;
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nsIScriptSecurityManager *secMan = nsContentUtils::GetSecurityManager();
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if (mScriptContext && !mCrossSiteAccessEnabled) {
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nsCOMPtr<nsIJSContextStack> stack(do_GetService("@mozilla.org/js/xpc/ContextStack;1", & rv));
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if (NS_FAILED(rv))
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return rv;
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JSContext *cx = (JSContext *)mScriptContext->GetNativeContext();
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if (!cx)
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return NS_ERROR_UNEXPECTED;
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stack->Push(cx);
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rv = secMan->CheckSameOrigin(nsnull, newLocation);
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stack->Pop(&cx);
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if (NS_FAILED(rv)) {
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// The security manager set a pending exception. Since we're
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// running under the event loop, we need to report it.
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::JS_ReportPendingException(cx);
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return rv;
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}
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}
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// XXXbz Shouldn't we look at the owner on the new channel at some point?
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// It's not gonna be right here, but eventually it will....
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nsCOMPtr<nsIPrincipal> principal;
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rv = secMan->GetCodebasePrincipal(newLocation, getter_AddRefs(principal));
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NS_ENSURE_SUCCESS(rv, rv);
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SetPrincipal(principal);
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return NS_OK;
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}
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NS_IMETHODIMP
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nsXMLDocument::EvaluateFIXptr(const nsAString& aExpression, nsIDOMRange **aRange)
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{
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nsresult rv;
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nsCOMPtr<nsIFIXptrEvaluator> e =
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do_CreateInstance("@mozilla.org/xmlextras/fixptrevaluator;1", &rv);
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NS_ENSURE_SUCCESS(rv, rv);
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return e->Evaluate(this, aExpression, aRange);
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}
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NS_IMETHODIMP
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nsXMLDocument::EvaluateXPointer(const nsAString& aExpression,
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nsIXPointerResult **aResult)
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{
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nsresult rv;
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nsCOMPtr<nsIXPointerEvaluator> e =
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do_CreateInstance("@mozilla.org/xmlextras/xpointerevaluator;1", &rv);
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NS_ENSURE_SUCCESS(rv, rv);
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return e->Evaluate(this, aExpression, aResult);
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}
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NS_IMETHODIMP
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nsXMLDocument::GetAsync(PRBool *aAsync)
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{
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NS_ENSURE_ARG_POINTER(aAsync);
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*aAsync = mAsync;
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return NS_OK;
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}
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NS_IMETHODIMP
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nsXMLDocument::SetAsync(PRBool aAsync)
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{
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mAsync = aAsync;
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return NS_OK;
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}
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nsresult
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nsXMLDocument::GetLoadGroup(nsILoadGroup **aLoadGroup)
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{
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NS_ENSURE_ARG_POINTER(aLoadGroup);
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*aLoadGroup = nsnull;
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if (mScriptContext) {
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nsCOMPtr<nsIDOMWindow> window =
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do_QueryInterface(mScriptContext->GetGlobalObject());
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if (window) {
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nsCOMPtr<nsIDOMDocument> domdoc;
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window->GetDocument(getter_AddRefs(domdoc));
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nsCOMPtr<nsIDocument> doc = do_QueryInterface(domdoc);
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if (doc) {
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*aLoadGroup = doc->GetDocumentLoadGroup().get(); // already_AddRefed
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}
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}
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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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nsXMLDocument::Load(const nsAString& aUrl, PRBool *aReturn)
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{
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NS_ENSURE_ARG_POINTER(aReturn);
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*aReturn = PR_FALSE;
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nsIScriptContext *callingContext = nsnull;
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nsCOMPtr<nsIJSContextStack> stack =
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do_GetService("@mozilla.org/js/xpc/ContextStack;1");
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if (stack) {
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JSContext *cx;
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if (NS_SUCCEEDED(stack->Peek(&cx)) && cx) {
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callingContext = nsJSUtils::GetDynamicScriptContext(cx);
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}
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}
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nsIURI *baseURI = mDocumentURI;
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nsCAutoString charset;
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if (callingContext) {
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nsCOMPtr<nsIDOMWindow> window =
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do_QueryInterface(callingContext->GetGlobalObject());
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if (window) {
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nsCOMPtr<nsIDOMDocument> dom_doc;
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window->GetDocument(getter_AddRefs(dom_doc));
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nsCOMPtr<nsIDocument> doc(do_QueryInterface(dom_doc));
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if (doc) {
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baseURI = doc->GetBaseURI();
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charset = doc->GetDocumentCharacterSet();
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}
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}
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}
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// Create a new URI
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nsCOMPtr<nsIURI> uri;
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nsresult rv = NS_NewURI(getter_AddRefs(uri), aUrl, charset.get(), baseURI);
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if (NS_FAILED(rv)) {
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return rv;
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}
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// Partial Reset, need to restore principal for security reasons and
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// event listener manager so that load listeners etc. will
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// remain. This should be done before the security check is done to
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// ensure that the document is reset even if the new document can't
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// be loaded. Note that we need to hold a strong ref to |principal|
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// here, because ResetToURI will null out our node principal before
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// setting the new one.
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nsCOMPtr<nsIPrincipal> principal = NodePrincipal();
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nsCOMPtr<nsIEventListenerManager> elm(mListenerManager);
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mListenerManager = nsnull;
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ResetToURI(uri, nsnull, principal);
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mListenerManager = elm;
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// Get security manager, check to see if we're allowed to load this URI
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nsCOMPtr<nsIScriptSecurityManager> secMan =
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do_GetService(NS_SCRIPTSECURITYMANAGER_CONTRACTID, &rv);
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if (NS_FAILED(rv)) {
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return rv;
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}
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rv = secMan->CheckConnect(nsnull, uri, "XMLDocument", "load");
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if (NS_FAILED(rv)) {
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// We need to return success here so that JS will get a proper
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// exception thrown later. Native calls should always result in
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// CheckConnect() succeeding, but in case JS calls C++ which calls
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// this code the exception might be lost.
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return NS_OK;
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}
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// Store script context, if any, in case we encounter redirect
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// (because we need it there)
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mScriptContext = callingContext;
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// Find out if UniversalBrowserRead privileges are enabled - we will
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// need this in case of a redirect
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PRBool crossSiteAccessEnabled;
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rv = secMan->IsCapabilityEnabled("UniversalBrowserRead",
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&crossSiteAccessEnabled);
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if (NS_FAILED(rv)) {
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return rv;
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}
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mCrossSiteAccessEnabled = crossSiteAccessEnabled;
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// Create a channel
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// When we are called from JS we can find the load group for the page,
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// and add ourselves to it. This way any pending requests
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// will be automatically aborted if the user leaves the page.
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nsCOMPtr<nsILoadGroup> loadGroup;
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GetLoadGroup(getter_AddRefs(loadGroup));
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nsCOMPtr<nsIChannel> channel;
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// nsIRequest::LOAD_BACKGROUND prevents throbber from becoming active,
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// which in turn keeps STOP button from becoming active
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rv = NS_NewChannel(getter_AddRefs(channel), uri, nsnull, loadGroup, this,
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nsIRequest::LOAD_BACKGROUND);
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if (NS_FAILED(rv)) {
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return rv;
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}
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// Set a principal for this document
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// XXXbz StartDocumentLoad should handle that.... And we shouldn't be calling
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// StartDocumentLoad until we get an OnStartRequest from this channel!
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nsCOMPtr<nsISupports> channelOwner;
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rv = channel->GetOwner(getter_AddRefs(channelOwner));
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// We don't care if GetOwner() succeeded here, if it failed,
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// channelOwner will be null, which is what we want in that case.
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principal = do_QueryInterface(channelOwner);
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if (NS_FAILED(rv) || !principal) {
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rv = secMan->GetCodebasePrincipal(uri, getter_AddRefs(principal));
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NS_ENSURE_TRUE(principal, rv);
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}
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SetPrincipal(principal);
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// Prepare for loading the XML document "into oneself"
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nsCOMPtr<nsIStreamListener> listener;
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if (NS_FAILED(rv = StartDocumentLoad(kLoadAsData, channel,
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loadGroup, nsnull,
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getter_AddRefs(listener),
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PR_FALSE))) {
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NS_ERROR("nsXMLDocument::Load: Failed to start the document load.");
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return rv;
|
|
}
|
|
|
|
// After this point, if we error out of this method we should clear
|
|
// mChannelIsPending.
|
|
|
|
// Start an asynchronous read of the XML document
|
|
rv = channel->AsyncOpen(listener, nsnull);
|
|
if (NS_FAILED(rv)) {
|
|
mChannelIsPending = PR_FALSE;
|
|
return rv;
|
|
}
|
|
|
|
if (!mAsync) {
|
|
nsCOMPtr<nsIThread> thread = do_GetCurrentThread();
|
|
|
|
mLoopingForSyncLoad = PR_TRUE;
|
|
while (mLoopingForSyncLoad) {
|
|
if (!NS_ProcessNextEvent(thread))
|
|
break;
|
|
}
|
|
|
|
// We set return to true unless there was a parsing error
|
|
nsCOMPtr<nsIDOMNode> node = do_QueryInterface(mRootContent);
|
|
if (node) {
|
|
nsAutoString name, ns;
|
|
if (NS_SUCCEEDED(node->GetLocalName(name)) &&
|
|
name.EqualsLiteral("parsererror") &&
|
|
NS_SUCCEEDED(node->GetNamespaceURI(ns)) &&
|
|
ns.EqualsLiteral("http://www.mozilla.org/newlayout/xml/parsererror.xml")) {
|
|
//return is already false
|
|
} else {
|
|
*aReturn = PR_TRUE;
|
|
}
|
|
}
|
|
} else {
|
|
*aReturn = PR_TRUE;
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
nsXMLDocument::StartDocumentLoad(const char* aCommand,
|
|
nsIChannel* aChannel,
|
|
nsILoadGroup* aLoadGroup,
|
|
nsISupports* aContainer,
|
|
nsIStreamListener **aDocListener,
|
|
PRBool aReset,
|
|
nsIContentSink* aSink)
|
|
{
|
|
if (nsCRT::strcmp(kLoadAsData, aCommand) == 0) {
|
|
mLoadedAsData = PR_TRUE;
|
|
// We need to disable script & style loading in this case.
|
|
// We leave them disabled even in EndLoad(), and let anyone
|
|
// who puts the document on display to worry about enabling.
|
|
|
|
// Do not load/process scripts when loading as data
|
|
ScriptLoader()->SetEnabled(PR_FALSE);
|
|
|
|
// styles
|
|
CSSLoader()->SetEnabled(PR_FALSE); // Do not load/process styles when loading as data
|
|
} else if (nsCRT::strcmp("loadAsInteractiveData", aCommand) == 0) {
|
|
mLoadedAsInteractiveData = PR_TRUE;
|
|
aCommand = kLoadAsData; // XBL, for example, needs scripts and styles
|
|
}
|
|
|
|
nsresult rv = nsDocument::StartDocumentLoad(aCommand,
|
|
aChannel, aLoadGroup,
|
|
aContainer,
|
|
aDocListener, aReset, aSink);
|
|
if (NS_FAILED(rv)) return rv;
|
|
|
|
PRInt32 charsetSource = kCharsetFromDocTypeDefault;
|
|
nsCAutoString charset(NS_LITERAL_CSTRING("UTF-8"));
|
|
TryChannelCharset(aChannel, charsetSource, charset);
|
|
|
|
nsCOMPtr<nsIURI> aUrl;
|
|
rv = aChannel->GetURI(getter_AddRefs(aUrl));
|
|
if (NS_FAILED(rv)) return rv;
|
|
|
|
static NS_DEFINE_CID(kCParserCID, NS_PARSER_CID);
|
|
|
|
mParser = do_CreateInstance(kCParserCID, &rv);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
nsCOMPtr<nsIXMLContentSink> sink;
|
|
|
|
if (aSink) {
|
|
sink = do_QueryInterface(aSink);
|
|
}
|
|
else {
|
|
nsCOMPtr<nsIDocShell> docShell;
|
|
if (aContainer) {
|
|
docShell = do_QueryInterface(aContainer);
|
|
NS_ENSURE_TRUE(docShell, NS_ERROR_FAILURE);
|
|
}
|
|
rv = NS_NewXMLContentSink(getter_AddRefs(sink), this, aUrl, docShell,
|
|
aChannel);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
}
|
|
|
|
// Set the parser as the stream listener for the document loader...
|
|
rv = CallQueryInterface(mParser, aDocListener);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
NS_ASSERTION(mChannel, "How can we not have a channel here?");
|
|
mChannelIsPending = PR_TRUE;
|
|
|
|
SetDocumentCharacterSet(charset);
|
|
mParser->SetDocumentCharset(charset, charsetSource);
|
|
mParser->SetCommand(aCommand);
|
|
mParser->SetContentSink(sink);
|
|
mParser->Parse(aUrl, nsnull, (void *)this);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
void
|
|
nsXMLDocument::EndLoad()
|
|
{
|
|
mChannelIsPending = PR_FALSE;
|
|
mLoopingForSyncLoad = PR_FALSE;
|
|
|
|
if (mLoadedAsData || mLoadedAsInteractiveData) {
|
|
// Generate a document load event for the case when an XML
|
|
// document was loaded as pure data without any presentation
|
|
// attached to it.
|
|
nsEvent event(PR_TRUE, NS_LOAD);
|
|
nsEventStatus status = nsEventStatus_eIgnore;
|
|
|
|
nsIScriptGlobalObject* sgo = nsnull;
|
|
nsCOMPtr<nsIScriptGlobalObjectOwner> container =
|
|
do_QueryReferent(mDocumentContainer);
|
|
if (container) {
|
|
sgo = container->GetScriptGlobalObject();
|
|
}
|
|
|
|
nsCxPusher pusher(sgo);
|
|
|
|
nsEventDispatcher::Dispatch(NS_STATIC_CAST(nsIDocument*, this), nsnull,
|
|
&event, nsnull, &status);
|
|
}
|
|
nsDocument::EndLoad();
|
|
}
|
|
|
|
PRBool
|
|
nsXMLDocument::IsLoadedAsData()
|
|
{
|
|
return mLoadedAsData;
|
|
}
|
|
|
|
|
|
// nsIDOMNode interface
|
|
|
|
NS_IMETHODIMP
|
|
nsXMLDocument::CloneNode(PRBool aDeep, nsIDOMNode** aReturn)
|
|
{
|
|
return nsNodeUtils::CloneNodeImpl(this, aDeep, aReturn);
|
|
}
|
|
|
|
// nsIDOMDocument interface
|
|
|
|
NS_IMETHODIMP
|
|
nsXMLDocument::GetElementById(const nsAString& aElementId,
|
|
nsIDOMElement** aReturn)
|
|
{
|
|
NS_ENSURE_ARG_POINTER(aReturn);
|
|
*aReturn = nsnull;
|
|
|
|
if (!CheckGetElementByIdArg(aElementId))
|
|
return NS_OK;
|
|
|
|
// If we tried to load a document and something went wrong, we might not have
|
|
// root content. This can happen when you do document.load() and the document
|
|
// to load is not XML, for example.
|
|
if (!mRootContent)
|
|
return NS_OK;
|
|
|
|
// XXX For now, we do a brute force search of the content tree.
|
|
// We should come up with a more efficient solution.
|
|
// Note that content is *not* refcounted here, so do *not* release it!
|
|
nsIContent *content =
|
|
nsContentUtils::MatchElementId(mRootContent, aElementId);
|
|
|
|
if (!content) {
|
|
return NS_OK;
|
|
}
|
|
|
|
return CallQueryInterface(content, aReturn);
|
|
}
|
|
|
|
nsresult
|
|
nsXMLDocument::Clone(nsINodeInfo *aNodeInfo, nsINode **aResult) const
|
|
{
|
|
NS_ASSERTION(aNodeInfo->NodeInfoManager() == mNodeInfoManager,
|
|
"Can't import this document into another document!");
|
|
|
|
nsCOMPtr<nsIDOMDocument> newDoc;
|
|
nsresult rv = NS_NewDOMDocument(getter_AddRefs(newDoc), EmptyString(),
|
|
EmptyString(), nsnull,
|
|
nsIDocument::GetDocumentURI(),
|
|
nsIDocument::GetBaseURI(), NodePrincipal());
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
return CallQueryInterface(newDoc, aResult);
|
|
}
|