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             : 
      33             :     //= OListenerContainer
      34             : 
      35             : 
      36       11214 :     OListenerContainer::OListenerContainer( ::osl::Mutex& _rMutex )
      37       11214 :         :m_aListeners( _rMutex )
      38             :     {
      39       11214 :     }
      40             : 
      41       11003 :     OListenerContainer::~OListenerContainer() {}
      42             : 
      43             : 
      44           2 :     void OListenerContainer::impl_addListener( const Reference< XEventListener >& _rxListener )
      45             :     {
      46             :         OSL_PRECOND( _rxListener.is(), "OListenerContainer::impl_addListener: a NULL listener?!" );
      47           2 :         if ( _rxListener.is() )
      48           2 :             m_aListeners.addInterface( _rxListener );
      49           2 :     }
      50             : 
      51             : 
      52           0 :     void OListenerContainer::impl_removeListener( const Reference< XEventListener >& _rxListener )
      53             :     {
      54             : #if OSL_DEBUG_LEVEL > 0
      55             :         ::cppu::OInterfaceIteratorHelper aIter( m_aListeners );
      56             :         bool bFound = false;
      57             :         while ( aIter.hasMoreElements() && !bFound )
      58             :         {
      59             :             bFound = ( Reference< XInterface >( aIter.next() ) == _rxListener );
      60             :         }
      61             :         OSL_ENSURE( bFound, "OListenerContainer::impl_removeListener: sure your listener handling is correct? The given listener is not registered!" );
      62             : #endif
      63           0 :         m_aListeners.removeInterface( _rxListener );
      64           0 :     }
      65             : 
      66             : 
      67       10865 :     void OListenerContainer::disposing( const EventObject& _rEventSource )
      68             :     {
      69       10865 :         m_aListeners.disposeAndClear( _rEventSource );
      70       10865 :     }
      71             : 
      72             : 
      73           2 :     void OListenerContainer::clear()
      74             :     {
      75           2 :         m_aListeners.clear();
      76           2 :     }
      77             : 
      78             : 
      79         104 :     bool OListenerContainer::impl_notify( const EventObject& _rEvent )
      80             :     {
      81         104 :         ::cppu::OInterfaceIteratorHelper aIter( m_aListeners );
      82         104 :         bool bCancelled = false;
      83         208 :         while ( aIter.hasMoreElements() && !bCancelled )
      84             :         {
      85           0 :             Reference< XEventListener > xListener( static_cast< XEventListener* >( aIter.next() ) );
      86           0 :             if ( !xListener.is() )
      87           0 :                 continue;
      88             : 
      89             :             try
      90             :             {
      91           0 :                 bCancelled = !implNotify( xListener, _rEvent );
      92             :             }
      93           0 :             catch( const DisposedException& e )
      94             :             {
      95             :                 // DisposedExceptions from the listener might indicate a
      96             :                 // broken connection to a different environment.
      97             : 
      98             :                 OSL_ENSURE( e.Context.is(), "OListenerContainer::impl_notify: caught dispose exception with empty Context field" );
      99             : 
     100             :                 // If the exception stems from the listener then remove it
     101             :                 // from the list of listeners.  If the Context field of the
     102             :                 // exception is empty this is interpreted to indicate the
     103             :                 // listener as well.
     104           0 :                 if ( e.Context == xListener || !e.Context.is() )
     105           0 :                     aIter.remove();
     106             :             }
     107           0 :         }
     108             : 
     109         104 :         return !bCancelled;
     110             :     }
     111             : 
     112             : 
     113             : }   // namespace comphelper
     114             : 
     115             : 
     116             : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */