xmloff/source/forms/ifacecompare.hxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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  19
  20 #ifndef _XMLOFF_FORMS_IFACECOMPARE_HXX_
  21 #define _XMLOFF_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 //.........................................................................
  28 namespace xmloff
  29 {
  30 //.........................................................................
  31
  32     //=====================================================================
  33     //= OInterfaceCompare
  34     //=====================================================================
  35     /** is stl-compliant structure for comparing Reference&lt; &lt;iface&gt; &gt; instances
  36     */
  37     template < class IAFCE >
  38     struct OInterfaceCompare
  39         :public ::std::binary_function  <   ::com::sun::star::uno::Reference< IAFCE >
  40                                         ,   ::com::sun::star::uno::Reference< IAFCE >
  41                                         ,   bool
  42                                         >
  43     {
  44         bool operator() (const ::com::sun::star::uno::Reference< IAFCE >& lhs, const ::com::sun::star::uno::Reference< IAFCE >& rhs) const
  45         {
  46             return lhs.get() < rhs.get();
  47                 // this does not make any sense if you see the semantics of the pointer returned by get:
  48                 // It's a pointer to a point in memory where an interface implementation lies.
  49                 // But for our purpose (provide a reliable less-operator which can be used with the STL), this is
  50                 // sufficient ....
  51         }
  52     };
  53
  54     typedef OInterfaceCompare< ::com::sun::star::beans::XPropertySet >  OPropertySetCompare;
  55     typedef OInterfaceCompare< ::com::sun::star::drawing::XDrawPage >   ODrawPageCompare;
  56
  57 //.........................................................................
  58 }   // namespace xmloff
  59 //.........................................................................
  60
  61 #endif // _XMLOFF_FORMS_IFACECOMPARE_HXX_
  62
  63 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */