Line data    Source code

       1             : /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
       2             : /*
       3             :  * This file is part of the LibreOffice project.
       4             :  *
       5             :  * This Source Code Form is subject to the terms of the Mozilla Public
       6             :  * License, v. 2.0. If a copy of the MPL was not distributed with this
       7             :  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
       8             :  *
       9             :  * This file incorporates work covered by the following license notice:
      10             :  *
      11             :  *   Licensed to the Apache Software Foundation (ASF) under one or more
      12             :  *   contributor license agreements. See the NOTICE file distributed
      13             :  *   with this work for additional information regarding copyright
      14             :  *   ownership. The ASF licenses this file to you under the Apache
      15             :  *   License, Version 2.0 (the "License"); you may not use this file
      16             :  *   except in compliance with the License. You may obtain a copy of
      17             :  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
      18             :  */
      19             : 
      20             : #include <comphelper/listenernotification.hxx>
      21             : 
      22             : #include <com/sun/star/lang/DisposedException.hpp>
      23             : 
      24             : 
      25             : namespace comphelper
      26             : {
      27             : 
      28             : 
      29             :     using namespace ::com::sun::star::uno;
      30             :     using namespace ::com::sun::star::lang;
      31             : 
      32        6405 :     OListenerContainer::OListenerContainer( ::osl::Mutex& _rMutex )
      33        6405 :         :m_aListeners( _rMutex )
      34             :     {
      35        6405 :     }
      36             : 
      37        6255 :     OListenerContainer::~OListenerContainer() {}
      38             : 
      39             : 
      40           1 :     void OListenerContainer::impl_addListener( const Reference< XEventListener >& _rxListener )
      41             :     {
      42             :         OSL_PRECOND( _rxListener.is(), "OListenerContainer::impl_addListener: a NULL listener?!" );
      43           1 :         if ( _rxListener.is() )
      44           1 :             m_aListeners.addInterface( _rxListener );
      45           1 :     }
      46             : 
      47             : 
      48           0 :     void OListenerContainer::impl_removeListener( const Reference< XEventListener >& _rxListener )
      49             :     {
      50             : #if OSL_DEBUG_LEVEL > 0
      51             :         ::cppu::OInterfaceIteratorHelper aIter( m_aListeners );
      52             :         bool bFound = false;
      53             :         while ( aIter.hasMoreElements() && !bFound )
      54             :         {
      55             :             bFound = ( Reference< XInterface >( aIter.next() ) == _rxListener );
      56             :         }
      57             :         OSL_ENSURE( bFound, "OListenerContainer::impl_removeListener: sure your listener handling is correct? The given listener is not registered!" );
      58             : #endif
      59           0 :         m_aListeners.removeInterface( _rxListener );
      60           0 :     }
      61             : 
      62             : 
      63        6236 :     void OListenerContainer::disposing( const EventObject& _rEventSource )
      64             :     {
      65        6236 :         m_aListeners.disposeAndClear( _rEventSource );
      66        6236 :     }
      67             : 
      68             : 
      69          10 :     void OListenerContainer::clear()
      70             :     {
      71          10 :         m_aListeners.clear();
      72          10 :     }
      73             : 
      74             : 
      75          56 :     bool OListenerContainer::impl_notify( const EventObject& _rEvent )
      76             :     {
      77          56 :         ::cppu::OInterfaceIteratorHelper aIter( m_aListeners );
      78          56 :         bool bCancelled = false;
      79         112 :         while ( aIter.hasMoreElements() && !bCancelled )
      80             :         {
      81           0 :             Reference< XEventListener > xListener( static_cast< XEventListener* >( aIter.next() ) );
      82           0 :             if ( !xListener.is() )
      83           0 :                 continue;
      84             : 
      85             :             try
      86             :             {
      87           0 :                 bCancelled = !implNotify( xListener, _rEvent );
      88             :             }
      89           0 :             catch( const DisposedException& e )
      90             :             {
      91             :                 // DisposedExceptions from the listener might indicate a
      92             :                 // broken connection to a different environment.
      93             : 
      94             :                 OSL_ENSURE( e.Context.is(), "OListenerContainer::impl_notify: caught dispose exception with empty Context field" );
      95             : 
      96             :                 // If the exception stems from the listener then remove it
      97             :                 // from the list of listeners.  If the Context field of the
      98             :                 // exception is empty this is interpreted to indicate the
      99             :                 // listener as well.
     100           0 :                 if ( e.Context == xListener || !e.Context.is() )
     101           0 :                     aIter.remove();
     102             :             }
     103           0 :         }
     104             : 
     105          56 :         return !bCancelled;
     106             :     }
     107             : 
     108             : 
     109             : }   // namespace comphelper
     110             : 
     111             : 
     112             : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */