xmloff/source/forms/ifacecompare.hxx

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  30
  31 #ifndef _XMLOFF_FORMS_IFACECOMPARE_HXX_
  32 #define _XMLOFF_FORMS_IFACECOMPARE_HXX_
  33
  34 #include <comphelper/stl_types.hxx>
  35 #include <com/sun/star/beans/XPropertySet.hpp>
  36 #include <com/sun/star/drawing/XDrawPage.hpp>
  37
  38 //.........................................................................
  39 namespace xmloff
  40 {
  41 //.........................................................................
  42
  43     //=====================================================================
  44     //= OInterfaceCompare
  45     //=====================================================================
  46     /** is stl-compliant structure for comparing Reference&lt; &lt;iface&gt; &gt; instances
  47     */
  48     template < class IAFCE >
  49     struct OInterfaceCompare
  50         :public ::std::binary_function  <       ::com::sun::star::uno::Reference< IAFCE >
  51                                         ,       ::com::sun::star::uno::Reference< IAFCE >
  52                                         ,       bool
  53                                         >
  54     {
  55         bool operator() (const ::com::sun::star::uno::Reference< IAFCE >& lhs, const ::com::sun::star::uno::Reference< IAFCE >& rhs) const
  56         {
  57             return lhs.get() < rhs.get();
  58                 // this does not make any sense if you see the semantics of the pointer returned by get:
  59                 // It's a pointer to a point in memory where an interface implementation lies.
  60                 // But for our purpose (provide a reliable less-operator which can be used with the STL), this is
  61                 // sufficient ....
  62         }
  63     };
  64
  65     typedef OInterfaceCompare< ::com::sun::star::beans::XPropertySet >  OPropertySetCompare;
  66     typedef OInterfaceCompare< ::com::sun::star::drawing::XDrawPage >   ODrawPageCompare;
  67
  68 //.........................................................................
  69 }       // namespace xmloff
  70 //.........................................................................
  71
  72 #endif // _XMLOFF_FORMS_IFACECOMPARE_HXX_
  73