103 lines
2.9 KiB
C++
103 lines
2.9 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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* The contents of this file are subject to the Netscape 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/NPL/
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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 mozilla.org code.
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*
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* The Initial Developer of the Original Code is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All
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* Rights Reserved.
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*
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* Contributor(s):
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* Peter Van der Beken, peterv@netscape.com
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* -- original author.
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*
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*/
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#include "XPathProcessor.h"
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#include "dom.h"
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#include "ProcessorState.h"
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#include "Expr.h"
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#include "nsNodeSet.h"
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#include "nsIDOMClassInfo.h"
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// XPConnect interface list for XPathProcessor
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NS_CLASSINFO_MAP_BEGIN(XPathProcessor)
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NS_CLASSINFO_MAP_ENTRY(nsIXPathNodeSelector)
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NS_CLASSINFO_MAP_END
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// QueryInterface implementation for XPathProcessor
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NS_INTERFACE_MAP_BEGIN(XPathProcessor)
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NS_INTERFACE_MAP_ENTRY(nsIXPathNodeSelector)
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NS_INTERFACE_MAP_ENTRY(nsISupports)
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NS_INTERFACE_MAP_ENTRY_DOM_CLASSINFO(XPathProcessor)
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NS_INTERFACE_MAP_END
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NS_IMPL_ADDREF(XPathProcessor)
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NS_IMPL_RELEASE(XPathProcessor)
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/*
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* Creates a new XPathProcessor
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*/
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XPathProcessor::XPathProcessor()
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{
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NS_INIT_ISUPPORTS();
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}
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/*
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* Default destructor
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*/
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XPathProcessor::~XPathProcessor()
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{
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}
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/* nsIDOMNodeList selectNodes (in nsIDOMNode aContextNode, in DOMString aPattern); */
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NS_IMETHODIMP XPathProcessor::SelectNodes(nsIDOMNode *aContextNode,
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const nsAReadableString & aPattern,
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nsIDOMNodeList **_retval)
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{
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String pattern(PromiseFlatString(aPattern).get());
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nsCOMPtr<nsIDOMDocument> aOwnerDOMDocument;
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aContextNode->GetOwnerDocument(getter_AddRefs(aOwnerDOMDocument));
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nsCOMPtr<nsIDocument> aOwnerDocument = do_QueryInterface(aOwnerDOMDocument);
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Document* aDocument = new Document(aOwnerDOMDocument);
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Node* aNode = aDocument->createWrapper(aContextNode);
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ProcessorState* aProcessorState = new ProcessorState();
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ExprParser aParser;
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Expr* aExpression = aParser.createExpr(pattern);
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ExprResult* exprResult = aExpression->evaluate(aNode, aProcessorState);
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nsNodeSet* resultSet;
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if (exprResult->getResultType() == ExprResult::NODESET) {
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resultSet = new nsNodeSet((NodeSet*)exprResult);
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}
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else {
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// Return an empty nodeset
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resultSet = new nsNodeSet(nsnull);
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}
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*_retval = resultSet;
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NS_ADDREF(*_retval);
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delete aProcessorState;
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delete exprResult;
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delete aExpression;
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delete aDocument;
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return NS_OK;
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}
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