configmgr/source/api2/propertiesfilterednotifier.cxx

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  30
  31 // MARKER(update_precomp.py): autogen include statement, do not remove
  32 #include "precompiled_configmgr.hxx"
  33
  34 #include "propertiesfilterednotifier.hxx"
  35
  36 #include <cppuhelper/queryinterface.hxx>
  37
  38 namespace configmgr
  39 {
  40     namespace uno       = ::com::sun::star::uno;
  41     namespace lang      = ::com::sun::star::lang;
  42     namespace beans     = ::com::sun::star::beans;
  43
  44 //-----------------------------------------------------------------------------
  45 //      class PropertiesFilteredNotifier
  46 //-----------------------------------------------------------------------------
  47
  48 PropertiesFilteredNotifier::PropertiesFilteredNotifier(
  49     uno::Reference< beans::XPropertiesChangeListener >const& xTarget,
  50     uno::Sequence< rtl::OUString > const& aFilterNames
  51 )
  52 : m_aRefCount()
  53 , m_xTarget(xTarget)
  54 , m_aFilterNames(aFilterNames)
  55 {
  56     OSL_ENSURE(xTarget.is(),"PropertiesFilteredNotifier: FORWARDING TO NULL LISTENER");
  57     OSL_ENSURE(aFilterNames.getLength() > 0,"PropertiesFilteredNotifier: FILTER IS EMPTY (no target)");
  58 }
  59 //-----------------------------------------------------------------------------
  60
  61 PropertiesFilteredNotifier::~PropertiesFilteredNotifier()
  62 {
  63 }
  64 //-----------------------------------------------------------------------------
  65
  66 void SAL_CALL PropertiesFilteredNotifier::acquire() throw()
  67 {
  68     m_aRefCount.acquire();
  69 }
  70 //-----------------------------------------------------------------------------
  71
  72 void SAL_CALL PropertiesFilteredNotifier::release(  ) throw()
  73 {
  74     if (m_aRefCount.release() == 0)
  75         delete this;
  76 }
  77 //-----------------------------------------------------------------------------
  78
  79 uno::Any SAL_CALL PropertiesFilteredNotifier::queryInterface( const uno::Type& aType )
  80     throw(uno::RuntimeException)
  81 {
  82     return cppu::queryInterface(aType
  83                 , static_cast< beans::XPropertiesChangeListener *>(this)
  84                 , static_cast< lang::XEventListener *>(this)
  85                 , static_cast< uno::XInterface *>(this)
  86             );
  87 }
  88 //-----------------------------------------------------------------------------
  89
  90 void SAL_CALL PropertiesFilteredNotifier::disposing( const lang::EventObject& Source )
  91     throw(uno::RuntimeException)
  92 {
  93     if (m_xTarget.is())
  94         m_xTarget->disposing(Source);
  95 }
  96 //-----------------------------------------------------------------------------
  97
  98 inline // private and only used twice
  99 bool PropertiesFilteredNotifier::implAccept(const ::com::sun::star::beans::PropertyChangeEvent& evt) const
 100 {
 101     // todo: optimize by presorting and binary searching
 102     sal_Int32 const nCount = m_aFilterNames.getLength();
 103
 104     for (sal_Int32 i = 0; i<nCount; ++i)
 105         if (evt.PropertyName == m_aFilterNames[i])
 106             return true;
 107     return false;
 108 }
 109 //-----------------------------------------------------------------------------
 110
 111 // private and only used once
 112 uno::Sequence< beans::PropertyChangeEvent > PropertiesFilteredNotifier::implFilter(const uno::Sequence< beans::PropertyChangeEvent >& evt)      const
 113 {
 114     sal_Int32 const nSize = evt.getLength();
 115     sal_Int32 nAccepted = 0;
 116
 117     while ( nAccepted < nSize && implAccept(evt[nAccepted]) )
 118         ++nAccepted;
 119
 120     if (nAccepted == nSize) // all accepted
 121         return evt;
 122
 123     // create a modified copy
 124     uno::Sequence< beans::PropertyChangeEvent > aResult(evt);
 125     for (sal_Int32 nCur = nAccepted+1; nCur<nSize; ++nCur)
 126     {
 127         if (implAccept(evt[nCur]))
 128         {
 129             aResult[nAccepted++] = evt[nCur];
 130         }
 131     }
 132     aResult.realloc(nAccepted);
 133     OSL_ASSERT(aResult.getLength() == nAccepted);
 134
 135     return aResult;
 136 }
 137 //-----------------------------------------------------------------------------
 138
 139 void SAL_CALL PropertiesFilteredNotifier::propertiesChange( const uno::Sequence< beans::PropertyChangeEvent >& evt )
 140     throw(uno::RuntimeException)
 141 {
 142     uno::Sequence< beans::PropertyChangeEvent > aFilteredEvt( implFilter(evt) );
 143
 144     if (aFilteredEvt.getLength() > 0)
 145     {
 146         if (m_xTarget.is())
 147             m_xTarget->propertiesChange(aFilteredEvt);
 148     }
 149 }
 150 //-----------------------------------------------------------------------------
 151
 152 }
 153
 154