xref: /trunk/main/xmloff/source/style/SinglePropertySetInfoCache.cxx (revision cdf0e10c4e3984b49a9502b011690b615761d4a3)
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27*cdf0e10cSrcweir 
28*cdf0e10cSrcweir // MARKER(update_precomp.py): autogen include statement, do not remove
29*cdf0e10cSrcweir #include "precompiled_xmloff.hxx"
30*cdf0e10cSrcweir #include <com/sun/star/lang/XTypeProvider.hpp>
31*cdf0e10cSrcweir #include <cppuhelper/weakref.hxx>
32*cdf0e10cSrcweir 
33*cdf0e10cSrcweir #ifndef _XMLOFF_SINGLEPROPERTYSETINFOCACHE_HXX
34*cdf0e10cSrcweir #include <xmloff/SinglePropertySetInfoCache.hxx>
35*cdf0e10cSrcweir #endif
36*cdf0e10cSrcweir 
37*cdf0e10cSrcweir using namespace ::com::sun::star::uno;
38*cdf0e10cSrcweir using ::com::sun::star::lang::XTypeProvider;
39*cdf0e10cSrcweir using ::com::sun::star::beans::XPropertySet;
40*cdf0e10cSrcweir using ::com::sun::star::beans::XPropertySetInfo;
41*cdf0e10cSrcweir 
42*cdf0e10cSrcweir sal_Bool SinglePropertySetInfoCache::hasProperty(
43*cdf0e10cSrcweir         const Reference< XPropertySet >& rPropSet,
44*cdf0e10cSrcweir         Reference< XPropertySetInfo >& rPropSetInfo )
45*cdf0e10cSrcweir {
46*cdf0e10cSrcweir     if( !rPropSetInfo.is() )
47*cdf0e10cSrcweir         rPropSetInfo = rPropSet->getPropertySetInfo();
48*cdf0e10cSrcweir     sal_Bool bRet = sal_False, bValid = sal_False;
49*cdf0e10cSrcweir     Reference < XTypeProvider > xTypeProv( rPropSet, UNO_QUERY );
50*cdf0e10cSrcweir     Sequence< sal_Int8 > aImplId;
51*cdf0e10cSrcweir     if( xTypeProv.is() )
52*cdf0e10cSrcweir     {
53*cdf0e10cSrcweir         aImplId = xTypeProv->getImplementationId();
54*cdf0e10cSrcweir         if( aImplId.getLength() == 16 )
55*cdf0e10cSrcweir         {
56*cdf0e10cSrcweir             // The key must not be created outside this block, because it
57*cdf0e10cSrcweir             // keeps a reference to the property set info.
58*cdf0e10cSrcweir             PropertySetInfoKey aKey( rPropSetInfo, aImplId );
59*cdf0e10cSrcweir             iterator aIter = find( aKey );
60*cdf0e10cSrcweir             if( aIter != end() )
61*cdf0e10cSrcweir             {
62*cdf0e10cSrcweir                 bRet = (*aIter).second;
63*cdf0e10cSrcweir                 bValid = sal_True;
64*cdf0e10cSrcweir             }
65*cdf0e10cSrcweir         }
66*cdf0e10cSrcweir     }
67*cdf0e10cSrcweir     if( !bValid )
68*cdf0e10cSrcweir     {
69*cdf0e10cSrcweir         bRet = rPropSetInfo->hasPropertyByName( sName );
70*cdf0e10cSrcweir         if( xTypeProv.is() && aImplId.getLength() == 16 )
71*cdf0e10cSrcweir         {
72*cdf0e10cSrcweir             // Check whether the property set info is destroyed if it is
73*cdf0e10cSrcweir             // assigned to a weak reference only. If it is destroyed, then
74*cdf0e10cSrcweir             // every instance of getPropertySetInfo returns a new object.
75*cdf0e10cSrcweir             // Such property set infos must not be cached.
76*cdf0e10cSrcweir             WeakReference < XPropertySetInfo > xWeakInfo( rPropSetInfo );
77*cdf0e10cSrcweir             rPropSetInfo = 0;
78*cdf0e10cSrcweir             rPropSetInfo = xWeakInfo;
79*cdf0e10cSrcweir             if( rPropSetInfo.is() )
80*cdf0e10cSrcweir             {
81*cdf0e10cSrcweir                 PropertySetInfoKey aKey( rPropSetInfo, aImplId );
82*cdf0e10cSrcweir                 value_type aValue( aKey, bRet );
83*cdf0e10cSrcweir                 insert( aValue );
84*cdf0e10cSrcweir             }
85*cdf0e10cSrcweir         }
86*cdf0e10cSrcweir     }
87*cdf0e10cSrcweir 
88*cdf0e10cSrcweir     return bRet;
89*cdf0e10cSrcweir }
90