comphelper/source/misc/SelectionMultiplex.cxx

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  30
  31 // MARKER(update_precomp.py): autogen include statement, do not remove
  32 #include "precompiled_comphelper.hxx"
  33
  34 #include <comphelper/SelectionMultiplex.hxx>
  35 #include <osl/diagnose.h>
  36
  37 //.........................................................................
  38 namespace comphelper
  39 {
  40 //.........................................................................
  41
  42 using namespace ::com::sun::star::uno;
  43 using namespace ::com::sun::star::lang;
  44 using namespace ::com::sun::star::view;
  45
  46 //========================================================================
  47 //= OSelectionChangeListener
  48 //========================================================================
  49 //------------------------------------------------------------------------
  50 OSelectionChangeListener::~OSelectionChangeListener()
  51 {
  52     if (m_pAdapter)
  53         m_pAdapter->dispose();
  54 }
  55
  56 //------------------------------------------------------------------
  57 void OSelectionChangeListener::_disposing(const EventObject&) throw( RuntimeException)
  58 {
  59     // nothing to do here
  60 }
  61
  62 //------------------------------------------------------------------
  63 void OSelectionChangeListener::disposeAdapter()
  64 {
  65     if ( m_pAdapter )
  66         m_pAdapter->dispose();
  67
  68     // will automatically set a new adapter
  69     OSL_ENSURE( !m_pAdapter, "OSelectionChangeListener::disposeAdapter: what did dispose do?" );
  70 }
  71
  72 //------------------------------------------------------------------
  73 void OSelectionChangeListener::setAdapter(OSelectionChangeMultiplexer* pAdapter)
  74 {
  75     if (m_pAdapter)
  76     {
  77         ::osl::MutexGuard aGuard(m_rMutex);
  78         m_pAdapter->release();
  79         m_pAdapter = NULL;
  80     }
  81
  82     if (pAdapter)
  83     {
  84         ::osl::MutexGuard aGuard(m_rMutex);
  85         m_pAdapter = pAdapter;
  86         m_pAdapter->acquire();
  87     }
  88 }
  89
  90 //========================================================================
  91 //= OSelectionChangeMultiplexer
  92 //========================================================================
  93 //------------------------------------------------------------------
  94 OSelectionChangeMultiplexer::OSelectionChangeMultiplexer(OSelectionChangeListener* _pListener, const  Reference< XSelectionSupplier>& _rxSet, sal_Bool _bAutoReleaseSet)
  95             :m_xSet(_rxSet)
  96             ,m_pListener(_pListener)
  97             ,m_nLockCount(0)
  98             ,m_bListening(sal_False)
  99             ,m_bAutoSetRelease(_bAutoReleaseSet)
 100 {
 101     m_pListener->setAdapter(this);
 102     osl_incrementInterlockedCount(&m_refCount);
 103     {
 104         Reference< XSelectionChangeListener> xPreventDelete(this);
 105         m_xSet->addSelectionChangeListener(xPreventDelete);
 106     }
 107     osl_decrementInterlockedCount(&m_refCount);
 108 }
 109
 110 //------------------------------------------------------------------
 111 OSelectionChangeMultiplexer::~OSelectionChangeMultiplexer()
 112 {
 113 }
 114
 115 //------------------------------------------------------------------
 116 void OSelectionChangeMultiplexer::lock()
 117 {
 118     ++m_nLockCount;
 119 }
 120
 121 //------------------------------------------------------------------
 122 void OSelectionChangeMultiplexer::unlock()
 123 {
 124     --m_nLockCount;
 125 }
 126
 127 //------------------------------------------------------------------
 128 void OSelectionChangeMultiplexer::dispose()
 129 {
 130     if (m_bListening)
 131     {
 132         Reference< XSelectionChangeListener> xPreventDelete(this);
 133
 134         m_xSet->removeSelectionChangeListener(xPreventDelete);
 135
 136         m_pListener->setAdapter(NULL);
 137
 138         m_pListener = NULL;
 139         m_bListening = sal_False;
 140
 141         if (m_bAutoSetRelease)
 142             m_xSet = NULL;
 143     }
 144 }
 145
 146 // XEventListener
 147 //------------------------------------------------------------------
 148 void SAL_CALL OSelectionChangeMultiplexer::disposing( const  EventObject& _rSource) throw( RuntimeException)
 149 {
 150     if (m_pListener)
 151     {
 152          // tell the listener
 153         if (!locked())
 154             m_pListener->_disposing(_rSource);
 155         // disconnect the listener
 156         if (m_pListener)        // may have been reset whilest calling into _disposing
 157             m_pListener->setAdapter(NULL);
 158     }
 159
 160     m_pListener = NULL;
 161     m_bListening = sal_False;
 162
 163     if (m_bAutoSetRelease)
 164         m_xSet = NULL;
 165 }
 166
 167 // XSelectionChangeListener
 168 //------------------------------------------------------------------
 169 void SAL_CALL OSelectionChangeMultiplexer::selectionChanged( const  EventObject& _rEvent ) throw( RuntimeException)
 170 {
 171     if (m_pListener && !locked())
 172         m_pListener->_selectionChanged(_rEvent);
 173 }
 174 //.........................................................................
 175 }
 176 //.........................................................................
 177