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Diffstat (limited to 'comphelper/source/misc/listenernotification.cxx')
| -rw-r--r-- | comphelper/source/misc/listenernotification.cxx | 127 |
1 files changed, 127 insertions, 0 deletions
diff --git a/comphelper/source/misc/listenernotification.cxx b/comphelper/source/misc/listenernotification.cxx new file mode 100644 index 000000000000..a9a14a0b9b72 --- /dev/null +++ b/comphelper/source/misc/listenernotification.cxx @@ -0,0 +1,127 @@ +/************************************************************************* + * + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. + * + * Copyright 2000, 2010 Oracle and/or its affiliates. + * + * OpenOffice.org - a multi-platform office productivity suite + * + * This file is part of OpenOffice.org. + * + * OpenOffice.org is free software: you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License version 3 + * only, as published by the Free Software Foundation. + * + * OpenOffice.org is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Lesser General Public License version 3 for more details + * (a copy is included in the LICENSE file that accompanied this code). + * + * You should have received a copy of the GNU Lesser General Public License + * version 3 along with OpenOffice.org. If not, see + * <http://www.openoffice.org/license.html> + * for a copy of the LGPLv3 License. + * + ************************************************************************/ + +// MARKER(update_precomp.py): autogen include statement, do not remove +#include "precompiled_comphelper.hxx" +#include <comphelper/listenernotification.hxx> + +/** === begin UNO includes === **/ +#include <com/sun/star/lang/DisposedException.hpp> +/** === end UNO includes === **/ + +//........................................................................ +namespace comphelper +{ +//........................................................................ + + using namespace ::com::sun::star::uno; + using namespace ::com::sun::star::lang; + + //==================================================================== + //= OListenerContainer + //==================================================================== + //-------------------------------------------------------------------- + OListenerContainer::OListenerContainer( ::osl::Mutex& _rMutex ) + :m_aListeners( _rMutex ) + { + } + + OListenerContainer::~OListenerContainer() {} + + //-------------------------------------------------------------------- + void OListenerContainer::impl_addListener( const Reference< XEventListener >& _rxListener ) + { + OSL_PRECOND( _rxListener.is(), "OListenerContainer::impl_addListener: a NULL listener?!" ); + if ( _rxListener.is() ) + m_aListeners.addInterface( _rxListener ); + } + + //-------------------------------------------------------------------- + void OListenerContainer::impl_removeListener( const Reference< XEventListener >& _rxListener ) + { +#if OSL_DEBUG_LEVEL > 0 + ::cppu::OInterfaceIteratorHelper aIter( m_aListeners ); + bool bFound = false; + while ( aIter.hasMoreElements() && !bFound ) + { + bFound = ( Reference< XInterface >( aIter.next() ) == _rxListener ); + } + OSL_ENSURE( bFound, "OListenerContainer::impl_removeListener: sure your listener handling is correct? The given listener is not registered!" ); +#endif + m_aListeners.removeInterface( _rxListener ); + } + + //-------------------------------------------------------------------- + void OListenerContainer::disposing( const EventObject& _rEventSource ) + { + m_aListeners.disposeAndClear( _rEventSource ); + } + + //-------------------------------------------------------------------- + void OListenerContainer::clear() + { + m_aListeners.clear(); + } + + //-------------------------------------------------------------------- + bool OListenerContainer::impl_notify( const EventObject& _rEvent ) SAL_THROW(( Exception )) + { + ::cppu::OInterfaceIteratorHelper aIter( m_aListeners ); + bool bCancelled = false; + while ( aIter.hasMoreElements() && !bCancelled ) + { + Reference< XEventListener > xListener( static_cast< XEventListener* >( aIter.next() ) ); + if ( !xListener.is() ) + continue; + + try + { + bCancelled = !implNotify( xListener, _rEvent ); + } + catch( const DisposedException& e ) + { + // DisposedExceptions from the listener might indicate a + // broken connection to a different environment. + + OSL_ENSURE( e.Context.is(), "OListenerContainer::impl_notify: caught dispose exception with empty Context field" ); + + // If the exception stems from the listener then remove it + // from the list of listeners. If the Context field of the + // exception is empty this is interpreted to indicate the + // listener as well. + if ( e.Context == xListener || !e.Context.is() ) + aIter.remove(); + } + } + + return !bCancelled; + } + +//........................................................................ +} // namespace comphelper +//........................................................................ + |