xmloff/source/style/SinglePropertySetInfoCache.cxx

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  30
  31 // MARKER(update_precomp.py): autogen include statement, do not remove
  32 #include "precompiled_xmloff.hxx"
  33 #include <com/sun/star/lang/XTypeProvider.hpp>
  34 #include <cppuhelper/weakref.hxx>
  35
  36 #ifndef _XMLOFF_SINGLEPROPERTYSETINFOCACHE_HXX
  37 #include <xmloff/SinglePropertySetInfoCache.hxx>
  38 #endif
  39
  40 using namespace ::com::sun::star::uno;
  41 using ::com::sun::star::lang::XTypeProvider;
  42 using ::com::sun::star::beans::XPropertySet;
  43 using ::com::sun::star::beans::XPropertySetInfo;
  44
  45 sal_Bool SinglePropertySetInfoCache::hasProperty(
  46         const Reference< XPropertySet >& rPropSet,
  47         Reference< XPropertySetInfo >& rPropSetInfo )
  48 {
  49     if( !rPropSetInfo.is() )
  50         rPropSetInfo = rPropSet->getPropertySetInfo();
  51     sal_Bool bRet = sal_False, bValid = sal_False;
  52     Reference < XTypeProvider > xTypeProv( rPropSet, UNO_QUERY );
  53     Sequence< sal_Int8 > aImplId;
  54     if( xTypeProv.is() )
  55     {
  56         aImplId = xTypeProv->getImplementationId();
  57         if( aImplId.getLength() == 16 )
  58         {
  59             // The key must not be created outside this block, because it
  60             // keeps a reference to the property set info.
  61             PropertySetInfoKey aKey( rPropSetInfo, aImplId );
  62             iterator aIter = find( aKey );
  63             if( aIter != end() )
  64             {
  65                 bRet = (*aIter).second;
  66                 bValid = sal_True;
  67             }
  68         }
  69     }
  70     if( !bValid )
  71     {
  72         bRet = rPropSetInfo->hasPropertyByName( sName );
  73         if( xTypeProv.is() && aImplId.getLength() == 16 )
  74         {
  75             // Check whether the property set info is destroyed if it is
  76             // assigned to a weak reference only. If it is destroyed, then
  77             // every instance of getPropertySetInfo returns a new object.
  78             // Such property set infos must not be cached.
  79             WeakReference < XPropertySetInfo > xWeakInfo( rPropSetInfo );
  80             rPropSetInfo = 0;
  81             rPropSetInfo = xWeakInfo;
  82             if( rPropSetInfo.is() )
  83             {
  84                 PropertySetInfoKey aKey( rPropSetInfo, aImplId );
  85                 value_type aValue( aKey, bRet );
  86                 insert( aValue );
  87             }
  88         }
  89     }
  90
  91     return bRet;
  92 }