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       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_XMLOFF_SOURCE_FORMS_IFACECOMPARE_HXX
      21             : #define INCLUDED_XMLOFF_SOURCE_FORMS_IFACECOMPARE_HXX
      22             : 
      23             : #include <comphelper/stl_types.hxx>
      24             : #include <com/sun/star/beans/XPropertySet.hpp>
      25             : #include <com/sun/star/drawing/XDrawPage.hpp>
      26             : 
      27             : namespace xmloff
      28             : {
      29             : 
      30             :     //= OInterfaceCompare
      31             :     /** is stl-compliant structure for comparing Reference&lt; &lt;iface&gt; &gt; instances
      32             :     */
      33             :     template < class IAFCE >
      34             :     struct OInterfaceCompare
      35             :         :public ::std::binary_function  <   ::com::sun::star::uno::Reference< IAFCE >
      36             :                                         ,   ::com::sun::star::uno::Reference< IAFCE >
      37             :                                         ,   bool
      38             :                                         >
      39             :     {
      40        1414 :         bool operator() (const ::com::sun::star::uno::Reference< IAFCE >& lhs, const ::com::sun::star::uno::Reference< IAFCE >& rhs) const
      41             :         {
      42        1414 :             return lhs.get() < rhs.get();
      43             :                 // this does not make any sense if you see the semantics of the pointer returned by get:
      44             :                 // It's a pointer to a point in memory where an interface implementation lies.
      45             :                 // But for our purpose (provide a reliable less-operator which can be used with the STL), this is
      46             :                 // sufficient ....
      47             :         }
      48             :     };
      49             : 
      50             :     typedef OInterfaceCompare< ::com::sun::star::beans::XPropertySet >  OPropertySetCompare;
      51             :     typedef OInterfaceCompare< ::com::sun::star::drawing::XDrawPage >   ODrawPageCompare;
      52             : 
      53             : }   // namespace xmloff
      54             : 
      55             : #endif // INCLUDED_XMLOFF_SOURCE_FORMS_IFACECOMPARE_HXX
      56             : 
      57             : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */