svtools/source/notify/listenerbase.cxx

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  30
  31 // MARKER(update_precomp.py): autogen include statement, do not remove
  32 #include "precompiled_svtools.hxx"
  33 #ifndef GCC
  34 #endif
  35
  36 #ifndef DEBUG_HXX
  37 #include <tools/debug.hxx>
  38 #endif
  39
  40 #include "listenerbase.hxx"
  41 #include "listeneriter.hxx"
  42 #include "listener.hxx"
  43 #include "broadcast.hxx"
  44
  45
  46 SvtListenerBase::SvtListenerBase( SvtListener& rLst,
  47                                   SvtBroadcaster& rBroadcaster )
  48     : pLeft( 0 ), pRight( 0 ),
  49     pBroadcaster( &rBroadcaster ), pListener( &rLst )
  50 {
  51     pNext = rLst.pBrdCastLst;
  52     rLst.pBrdCastLst = this;
  53
  54     if( pBroadcaster->pRoot )
  55     {
  56         // set ever behind the root
  57         pRight = pBroadcaster->pRoot->pRight;
  58         pBroadcaster->pRoot->pRight = this;
  59         this->pLeft = pBroadcaster->pRoot;
  60         if( pRight )
  61             pRight->pLeft = this;
  62     }
  63     else
  64         pBroadcaster->pRoot = this;
  65 }
  66
  67 SvtListenerBase::~SvtListenerBase()
  68 {
  69     SvtListenerBase *pR = pRight, *pL = pLeft;
  70     if( pBroadcaster->pRoot )
  71         pBroadcaster->pRoot = pL ? pL : pR;
  72
  73     if( pL )
  74         pL->pRight = pR;
  75     if( pR )
  76         pR->pLeft = pL;
  77
  78     SvtListenerIter::RemoveListener( *this, pR );
  79
  80     if( !pBroadcaster->pRoot )
  81         pBroadcaster->ListenersGone();
  82 }
  83
  84