configmgr/source/treecache/cachemulticaster.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 "cachemulticaster.hxx"
  35 #include "treemanager.hxx"
  36
  37 #ifndef INCLUDED_ALGORITHM
  38 #include <algorithm>
  39 #define INCLUDED_ALGORITHM
  40 #endif
  41 #ifndef INCLUDED_FUNCTIONAL
  42 #include <functional>
  43 #define INCLUDED_FUNCTIONAL
  44 #endif
  45
  46 namespace configmgr
  47 {
  48 // ---------------------------------------------------------------------------
  49     namespace backend
  50     {
  51 // ---------------------------------------------------------------------------
  52 namespace
  53 {
  54 // manually implemented helpers, as rtl::References don't work well with std binders
  55
  56 // ---------------------------------------------------------------------------
  57
  58     // replacing  std::bind2nd( std::mem_fun(&TreeManager::componentCreated), _aComponentName )
  59     struct NotifyCreated : std::unary_function<rtl::Reference<TreeManager>,void>
  60     {
  61         ComponentRequest const & m_arg;
  62
  63         NotifyCreated(ComponentRequest const * _pComponent) SAL_THROW(())
  64         : m_arg(*_pComponent)
  65         {}
  66
  67         void operator()(rtl::Reference<TreeManager> const & _xListener) const SAL_THROW(())
  68         { _xListener->componentCreated(m_arg); }
  69     };
  70 // ---------------------------------------------------------------------------
  71
  72     // replacing  std::bind2nd( std::mem_fun(&TreeManager::componentChanged), _aComponentName )
  73     struct NotifyChanged : std::unary_function<rtl::Reference<TreeManager>,void>
  74     {
  75         UpdateRequest const & m_arg;
  76
  77         NotifyChanged(UpdateRequest const * _pUpdate) SAL_THROW(())
  78         : m_arg(*_pUpdate)
  79         {}
  80
  81         void operator()(rtl::Reference<TreeManager> const & _xListener) const SAL_THROW(())
  82         { _xListener->componentChanged(m_arg); }
  83     };
  84 // ---------------------------------------------------------------------------
  85 } // anonymous namespace
  86 //----------------------------------------------------------------------------
  87
  88 CacheChangeMulticaster::CacheChangeMulticaster()
  89 : m_aMutex()
  90 , m_aListeners()
  91 {
  92 }
  93 // ---------------------------------------------------------------------------
  94
  95 CacheChangeMulticaster::~CacheChangeMulticaster()
  96 {
  97     OSL_ENSURE( m_aListeners.empty(), "Forgot to dispose multicaster" );
  98 }
  99 // ---------------------------------------------------------------------------
 100
 101 inline std::list< rtl::Reference<TreeManager> > CacheChangeMulticaster::copyListenerList()
 102 {
 103     osl::MutexGuard aListGuard(m_aMutex);
 104     return m_aListeners;
 105 }
 106 // ---------------------------------------------------------------------------
 107
 108 void CacheChangeMulticaster::notifyCreated(ComponentRequest const & _aComponent) SAL_THROW(())
 109 {
 110     std::list< rtl::Reference<TreeManager> > aNotifyListeners( this->copyListenerList() );
 111
 112     std::for_each( aNotifyListeners.begin(), aNotifyListeners.end(), NotifyCreated(&_aComponent) );
 113 }
 114 // ---------------------------------------------------------------------------
 115
 116 void CacheChangeMulticaster::notifyChanged(UpdateRequest const & _anUpdate) SAL_THROW(())
 117 {
 118     std::list< rtl::Reference<TreeManager> > aNotifyListeners( this->copyListenerList() );
 119
 120     std::for_each( aNotifyListeners.begin(), aNotifyListeners.end(), NotifyChanged(&_anUpdate) );
 121 }
 122 // ---------------------------------------------------------------------------
 123
 124 void CacheChangeMulticaster::addListener(rtl::Reference<TreeManager> _xListener) SAL_THROW(())
 125 {
 126     osl::MutexGuard aListGuard(m_aMutex);
 127
 128     OSL_PRECOND(std::find(m_aListeners.begin(),m_aListeners.end(),_xListener) == m_aListeners.end(),
 129                 "WARNING: Cache Change Listener was already registered - will be notified multiply.");
 130
 131     OSL_PRECOND(_xListener.is(), "ERROR: trying to register a NULL listener");
 132
 133     if (_xListener.is())
 134         m_aListeners.push_front(_xListener);
 135 }
 136 // ---------------------------------------------------------------------------
 137
 138 void CacheChangeMulticaster::removeListener(rtl::Reference<TreeManager> _xListener) SAL_THROW(())
 139 {
 140     osl::MutexGuard aListGuard(m_aMutex);
 141     m_aListeners.remove(_xListener);
 142 }
 143 // ---------------------------------------------------------------------------
 144     } // namespace backend
 145
 146 // ---------------------------------------------------------------------------
 147 } // namespace configmgr