зеркало из https://github.com/mozilla/gecko-dev.git
115 строки
3.3 KiB
C++
115 строки
3.3 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
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*
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* The contents of this file are subject to the Mozilla Public
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* License Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS
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* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
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* implied. See the License for the specific language governing
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* rights and limitations under the License.
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*
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* The Original Code is RaptorCanvas.
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*
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* The Initial Developer of the Original Code is Kirk Baker and
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* Ian Wilkinson. Portions created by Kirk Baker and Ian Wilkinson are
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* Copyright (C) 1999 Kirk Baker and Ian Wilkinson. All
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* Rights Reserved.
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*
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* Contributor(s): Ed Burns <edburns@acm.org>
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*/
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#include "dom_util.h"
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#include "ns_globals.h" // for prLogModuleInfo and gComponentManager
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#include "prlog.h" // for PR_ASSERT
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#include "nsIDocShell.h"
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#include "nsIContentViewer.h"
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#include "nsIDocumentViewer.h"
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#include "nsIDocument.h"
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#include "nsIDOMDocument.h"
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#include "nsIDocumentLoader.h"
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#include "nsIDOMEventTarget.h"
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nsresult dom_iterateToRoot(nsCOMPtr<nsIDOMNode> currentNode,
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fpTakeActionOnNodeType nodeFunction,
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void *yourObject)
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{
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nsCOMPtr<nsIDOMNode> parentNode;
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nsresult rv;
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if (nodeFunction) {
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rv = nodeFunction(currentNode, yourObject);
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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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rv = currentNode->GetParentNode(getter_AddRefs(parentNode));
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if (NS_FAILED(rv)) {
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return rv;
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}
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if (nsnull == parentNode) {
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return rv;
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}
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dom_iterateToRoot(parentNode, nodeFunction, yourObject);
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return rv;
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}
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nsCOMPtr<nsIDOMDocument> dom_getDocumentFromLoader(nsIDocumentLoader *loader)
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{
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PR_ASSERT(nsnull != loader);
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nsresult rv;
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nsCOMPtr<nsISupports> container;
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nsCOMPtr<nsIDocShell> docShell;
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nsCOMPtr<nsIDOMDocument> result = nsnull;
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rv = loader->GetContainer(getter_AddRefs(container));
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if (NS_FAILED(rv) || !container) {
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return result;
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}
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rv = container->QueryInterface(NS_GET_IID(nsIDocShell),
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getter_AddRefs(docShell));
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if (NS_FAILED(rv) || !docShell) {
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return result;
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}
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result = dom_getDocumentFromDocShell(docShell);
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return result;
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}
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nsCOMPtr<nsIDOMDocument> dom_getDocumentFromDocShell(nsIDocShell *docShell)
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{
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PR_ASSERT(nsnull != docShell);
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nsCOMPtr<nsIDOMDocument> result = nsnull;
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nsCOMPtr<nsIContentViewer> contentv;
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nsCOMPtr<nsIDocumentViewer> docv;
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nsIDocument *document; // PENDING(edburns): does GetDocument do an AddRef?
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nsresult rv;
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rv = docShell->GetContentViewer(getter_AddRefs(contentv));
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if (NS_FAILED(rv) || !contentv) {
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return result;
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}
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rv = contentv->QueryInterface(NS_GET_IID(nsIDocumentViewer),
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getter_AddRefs(docv));
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if (NS_FAILED(rv) || !docv) {
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return result;
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}
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rv = docv->GetDocument(document);
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if (NS_FAILED(rv) || !document) {
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return result;
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}
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rv = document->QueryInterface(NS_GET_IID(nsIDOMDocument),
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getter_AddRefs(result));
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return result;
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}
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