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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is TransforMiiX XSLT processor code.
*
* The Initial Developer of the Original Code is
* Netscape Communications Corporation.
* Portions created by the Initial Developer are Copyright (C) 2001
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Peter Van der Beken <peterv@propagandism.org>
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#ifndef nsXPathResult_h__
#define nsXPathResult_h__
#include "ExprResult.h"
#include "nsIDOMXPathResult.h"
#include "nsIDocument.h"
#include "nsIDocumentObserver.h"
#include "nsCOMPtr.h"
#include "nsCOMArray.h"
// {15b9b301-2012-11d6-a7f2-e6d0a678995c}
#define NS_IXPATHRESULT_IID \
{ 0x15b9b301, 0x2012, 0x11d6, {0xa7, 0xf2, 0xe6, 0xd0, 0xa6, 0x78, 0x99, 0x5c }};
class nsIXPathResult : public nsISupports
{
public:
NS_DEFINE_STATIC_IID_ACCESSOR(NS_IXPATHRESULT_IID)
virtual nsresult SetExprResult(txAExprResult *aExprResult,
PRUint16 aResultType) = 0;
virtual nsresult GetExprResult(txAExprResult **aExprResult) = 0;
virtual nsresult Clone(nsIXPathResult **aResult) = 0;
};
/**
* Helper class to keep Mozilla node objects alive as long as the nodeset is
* alive.
*/
class txResultHolder
{
public:
~txResultHolder()
{
releaseNodeSet();
}
txAExprResult *get()
{
return mResult;
}
void set(txAExprResult *aResult);
private:
void releaseNodeSet();
nsRefPtr<txAExprResult> mResult;
};
/**
* A class for evaluating an XPath expression string
*/
class nsXPathResult : public nsIDOMXPathResult,
public nsIDocumentObserver,
public nsIXPathResult
{
public:
nsXPathResult();
virtual ~nsXPathResult();
// nsISupports interface
NS_DECL_ISUPPORTS
// nsIDOMXPathResult interface
NS_DECL_NSIDOMXPATHRESULT
// nsIDocumentObserver interface
NS_DECL_NSIDOCUMENTOBSERVER
// nsIXPathResult interface
nsresult SetExprResult(txAExprResult *aExprResult, PRUint16 aResultType);
nsresult GetExprResult(txAExprResult **aExprResult);
nsresult Clone(nsIXPathResult **aResult);
private:
PRBool isSnapshot() const
{
return mResultType == UNORDERED_NODE_SNAPSHOT_TYPE ||
mResultType == ORDERED_NODE_SNAPSHOT_TYPE;
}
PRBool isIterator() const
{
return mResultType == UNORDERED_NODE_ITERATOR_TYPE ||
mResultType == ORDERED_NODE_ITERATOR_TYPE;
}
PRBool isNode() const
{
return mResultType == FIRST_ORDERED_NODE_TYPE ||
mResultType == ANY_UNORDERED_NODE_TYPE;
}
void Invalidate();
txResultHolder mResult;
nsCOMPtr<nsIDocument> mDocument;
PRUint32 mCurrentPos;
PRUint16 mResultType;
PRPackedBool mInvalidIteratorState;
};
#endif
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