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nsXFormsXPathEvaluator.h
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00001 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
00002 /* ***** BEGIN LICENSE BLOCK *****
00003  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
00004  *
00005  * The contents of this file are subject to the Mozilla Public License Version
00006  * 1.1 (the "License"); you may not use this file except in compliance with
00007  * the License. You may obtain a copy of the License at
00008  * http://www.mozilla.org/MPL/
00009  *
00010  * Software distributed under the License is distributed on an "AS IS" basis,
00011  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
00012  * for the specific language governing rights and limitations under the
00013  * License.
00014  *
00015  * The Original Code is Mozilla XForms support.
00016  *
00017  * The Initial Developer of the Original Code is
00018  * IBM Corporation.
00019  * Portions created by the Initial Developer are Copyright (C) 2004
00020  * the Initial Developer. All Rights Reserved.
00021  *
00022  * Contributor(s):
00023  *  Aaron Reed <aaronr@us.ibm.com>
00024  *
00025  * Alternatively, the contents of this file may be used under the terms of
00026  * either the GNU General Public License Version 2 or later (the "GPL"), or
00027  * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
00028  * in which case the provisions of the GPL or the LGPL are applicable instead
00029  * of those above. If you wish to allow use of your version of this file only
00030  * under the terms of either the GPL or the LGPL, and not to allow others to
00031  * use your version of this file under the terms of the MPL, indicate your
00032  * decision by deleting the provisions above and replace them with the notice
00033  * and other provisions required by the GPL or the LGPL. If you do not delete
00034  * the provisions above, a recipient may use your version of this file under
00035  * the terms of any one of the MPL, the GPL or the LGPL.
00036  *
00037  * ***** END LICENSE BLOCK ***** */
00038 
00039 #ifndef nsXFormsXPathEvaluator_h__
00040 #define nsXFormsXPathEvaluator_h__
00041 
00042 #include "nsIXFormsXPathEvaluator.h"
00043 #include "txIXPathContext.h"
00044 #include "nsIXPathEvaluatorInternal.h"
00045 #include "nsIWeakReference.h"
00046 #include "nsAutoPtr.h"
00047 #include "txResultRecycler.h"
00048 
00049 
00050 class nsIDOMDocument;
00051 class nsIDOMXPathExpression;
00052 
00056 class nsXFormsXPathEvaluator : public nsIXFormsXPathEvaluator
00057 {
00058 public:
00059     nsXFormsXPathEvaluator();
00060     virtual ~nsXFormsXPathEvaluator();
00061 
00062     // nsISupports interface
00063     NS_DECL_ISUPPORTS
00064 
00065     // nsIXFormsXPathEvaluator interface
00066     NS_DECL_NSIXFORMXPATHEVALUATOR
00067 
00068 private:
00069     // txIParseContext implementation
00070     class XFormsParseContextImpl : public txIParseContext
00071     {
00072     public:
00073         XFormsParseContextImpl(nsIDOMNode* aResolverNode, nsIDOMNode* aOrigCtxt)
00074               : mResolverNode(aResolverNode),
00075                 mOriginalContext(aOrigCtxt),
00076                 mLastError(NS_OK)
00077         {
00078         }
00079 
00080         ~XFormsParseContextImpl()
00081         {
00082         }
00083 
00084         nsresult getError()
00085         {
00086             return mLastError;
00087         }
00088 
00089         nsresult resolveNamespacePrefix(nsIAtom* aPrefix, PRInt32& aID);
00090         nsresult resolveFunctionCall(nsIAtom* aName, PRInt32 aID,
00091                                      FunctionCall*& aFunction);
00092         PRBool caseInsensitiveNameTests();
00093         void SetErrorOffset(PRUint32 aOffset);
00094 
00095     private:
00096         nsIDOMNode* mResolverNode;
00097         nsIDOMNode* mOriginalContext;
00098         nsresult mLastError;
00099     };
00100 
00101     nsRefPtr<txResultRecycler> mRecycler;
00102 };
00103 
00104 #endif