Line data    Source code

       1             : /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
       2             : /*
       3             :  * This file is part of the LibreOffice project.
       4             :  *
       5             :  * This Source Code Form is subject to the terms of the Mozilla Public
       6             :  * License, v. 2.0. If a copy of the MPL was not distributed with this
       7             :  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
       8             :  *
       9             :  * This file incorporates work covered by the following license notice:
      10             :  *
      11             :  *   Licensed to the Apache Software Foundation (ASF) under one or more
      12             :  *   contributor license agreements. See the NOTICE file distributed
      13             :  *   with this work for additional information regarding copyright
      14             :  *   ownership. The ASF licenses this file to you under the Apache
      15             :  *   License, Version 2.0 (the "License"); you may not use this file
      16             :  *   except in compliance with the License. You may obtain a copy of
      17             :  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
      18             :  */
      19             : 
      20             : #ifndef INCLUDED_FORMS_SOURCE_XFORMS_PATHEXPRESSION_HXX
      21             : #define INCLUDED_FORMS_SOURCE_XFORMS_PATHEXPRESSION_HXX
      22             : 
      23             : #include "computedexpression.hxx"
      24             : 
      25             : #include <vector>
      26             : 
      27             : // forward declaractions
      28             : namespace com { namespace sun { namespace star
      29             : {
      30             :     namespace xml { namespace dom
      31             :     {
      32             :         class XNodeList;
      33             :         namespace events { class XEventListener; }
      34             :     } }
      35             : } } }
      36             : 
      37             : 
      38             : 
      39             : namespace xforms
      40             : {
      41             : 
      42             : /** PathExpression represents an XPath Expression and caches results */
      43             : class PathExpression : public ComputedExpression
      44             : {
      45             : public:
      46             :     typedef std::vector<com::sun::star::uno::Reference<com::sun::star::xml::dom::XNode> > NodeVector_t;
      47             : 
      48             : private:
      49             :     /// the node-list result from the last bind (cached from mxResult)
      50             :     NodeVector_t maNodes;
      51             : 
      52             : protected:
      53             :     /// get expression for evaluation
      54             :     const OUString _getExpressionForEvaluation() const;
      55             : 
      56             : 
      57             : public:
      58             :     PathExpression();
      59             :     ~PathExpression();
      60             : 
      61             :     /// set the expression string
      62             :     /// (overridden to do remove old listeners)
      63             :     /// (also defines simple expressions)
      64             :     void setExpression( const OUString& rExpression );
      65             : 
      66             : 
      67             :     /// evaluate the expression relative to the content node.
      68             :     bool evaluate( const xforms::EvaluationContext& rContext );
      69             : 
      70             : 
      71             :     // get the result of this expression as node/node list/...
      72             :     com::sun::star::uno::Reference<com::sun::star::xml::dom::XNode> getNode() const;
      73           0 :     const NodeVector_t getNodeList() const { return maNodes;}
      74             :     com::sun::star::uno::Reference<com::sun::star::xml::dom::XNodeList> getXNodeList() const;
      75             : 
      76             : };
      77             : 
      78             : } // namespace xforms
      79             : 
      80             : #endif
      81             : 
      82             : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */