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Diffstat (limited to 'comphelper/source/misc/SelectionMultiplex.cxx')
| -rw-r--r-- | comphelper/source/misc/SelectionMultiplex.cxx | 174 |
1 files changed, 174 insertions, 0 deletions
diff --git a/comphelper/source/misc/SelectionMultiplex.cxx b/comphelper/source/misc/SelectionMultiplex.cxx new file mode 100644 index 000000000000..d61dee3f29f0 --- /dev/null +++ b/comphelper/source/misc/SelectionMultiplex.cxx @@ -0,0 +1,174 @@ +/************************************************************************* + * + * 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/SelectionMultiplex.hxx> +#include <osl/diagnose.h> + +//......................................................................... +namespace comphelper +{ +//......................................................................... + +using namespace ::com::sun::star::uno; +using namespace ::com::sun::star::lang; +using namespace ::com::sun::star::view; + +//======================================================================== +//= OSelectionChangeListener +//======================================================================== +//------------------------------------------------------------------------ +OSelectionChangeListener::~OSelectionChangeListener() +{ + if (m_pAdapter) + m_pAdapter->dispose(); +} + +//------------------------------------------------------------------ +void OSelectionChangeListener::_disposing(const EventObject&) throw( RuntimeException) +{ + // nothing to do here +} + +//------------------------------------------------------------------ +void OSelectionChangeListener::disposeAdapter() +{ + if ( m_pAdapter ) + m_pAdapter->dispose(); + + // will automatically set a new adapter + OSL_ENSURE( !m_pAdapter, "OSelectionChangeListener::disposeAdapter: what did dispose do?" ); +} + +//------------------------------------------------------------------ +void OSelectionChangeListener::setAdapter(OSelectionChangeMultiplexer* pAdapter) +{ + if (m_pAdapter) + { + ::osl::MutexGuard aGuard(m_rMutex); + m_pAdapter->release(); + m_pAdapter = NULL; + } + + if (pAdapter) + { + ::osl::MutexGuard aGuard(m_rMutex); + m_pAdapter = pAdapter; + m_pAdapter->acquire(); + } +} + +//======================================================================== +//= OSelectionChangeMultiplexer +//======================================================================== +//------------------------------------------------------------------ +OSelectionChangeMultiplexer::OSelectionChangeMultiplexer(OSelectionChangeListener* _pListener, const Reference< XSelectionSupplier>& _rxSet, sal_Bool _bAutoReleaseSet) + :m_xSet(_rxSet) + ,m_pListener(_pListener) + ,m_nLockCount(0) + ,m_bListening(sal_False) + ,m_bAutoSetRelease(_bAutoReleaseSet) +{ + m_pListener->setAdapter(this); + osl_incrementInterlockedCount(&m_refCount); + { + Reference< XSelectionChangeListener> xPreventDelete(this); + m_xSet->addSelectionChangeListener(xPreventDelete); + } + osl_decrementInterlockedCount(&m_refCount); +} + +//------------------------------------------------------------------ +OSelectionChangeMultiplexer::~OSelectionChangeMultiplexer() +{ +} + +//------------------------------------------------------------------ +void OSelectionChangeMultiplexer::lock() +{ + ++m_nLockCount; +} + +//------------------------------------------------------------------ +void OSelectionChangeMultiplexer::unlock() +{ + --m_nLockCount; +} + +//------------------------------------------------------------------ +void OSelectionChangeMultiplexer::dispose() +{ + if (m_bListening) + { + Reference< XSelectionChangeListener> xPreventDelete(this); + + m_xSet->removeSelectionChangeListener(xPreventDelete); + + m_pListener->setAdapter(NULL); + + m_pListener = NULL; + m_bListening = sal_False; + + if (m_bAutoSetRelease) + m_xSet = NULL; + } +} + +// XEventListener +//------------------------------------------------------------------ +void SAL_CALL OSelectionChangeMultiplexer::disposing( const EventObject& _rSource) throw( RuntimeException) +{ + if (m_pListener) + { + // tell the listener + if (!locked()) + m_pListener->_disposing(_rSource); + // disconnect the listener + if (m_pListener) // may have been reset whilest calling into _disposing + m_pListener->setAdapter(NULL); + } + + m_pListener = NULL; + m_bListening = sal_False; + + if (m_bAutoSetRelease) + m_xSet = NULL; +} + +// XSelectionChangeListener +//------------------------------------------------------------------ +void SAL_CALL OSelectionChangeMultiplexer::selectionChanged( const EventObject& _rEvent ) throw( RuntimeException) +{ + if (m_pListener && !locked()) + m_pListener->_selectionChanged(_rEvent); +} +//......................................................................... +} +//......................................................................... + |