AOO410/main/comphelper/source/property/propmultiplex.cxx

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 * 
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 * 
 *   http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 * 
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// MARKER(update_precomp.py): autogen include statement, do not remove
#include "precompiled_comphelper.hxx"
#include <comphelper/propmultiplex.hxx>
#include <osl/diagnose.h>

//.........................................................................
namespace comphelper
{
//.........................................................................

using namespace ::com::sun::star::uno;
using namespace ::com::sun::star::lang;
using namespace ::com::sun::star::beans;

//========================================================================
//= OPropertyChangeListener
//========================================================================
//------------------------------------------------------------------------
OPropertyChangeListener::~OPropertyChangeListener()
{
	if (m_pAdapter)
		m_pAdapter->dispose();
}

//------------------------------------------------------------------
void OPropertyChangeListener::_disposing(const EventObject&) throw( RuntimeException)
{
	// nothing to do here
}

//------------------------------------------------------------------
void OPropertyChangeListener::disposeAdapter()
{
	if ( m_pAdapter )
		m_pAdapter->dispose();

    // will automatically set a new adapter
    OSL_ENSURE( !m_pAdapter, "OPropertyChangeListener::disposeAdapter: what did dispose do?" );
}

//------------------------------------------------------------------
void OPropertyChangeListener::setAdapter(OPropertyChangeMultiplexer* 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();
	}
}

//========================================================================
//= OPropertyChangeMultiplexer
//========================================================================
//------------------------------------------------------------------
OPropertyChangeMultiplexer::OPropertyChangeMultiplexer(OPropertyChangeListener* _pListener, const  Reference< XPropertySet>& _rxSet, sal_Bool _bAutoReleaseSet)
			:m_xSet(_rxSet)
			,m_pListener(_pListener)
			,m_nLockCount(0)
			,m_bListening(sal_False)
			,m_bAutoSetRelease(_bAutoReleaseSet)
{
	m_pListener->setAdapter(this);
}

//------------------------------------------------------------------
OPropertyChangeMultiplexer::~OPropertyChangeMultiplexer()
{
}

//------------------------------------------------------------------
void OPropertyChangeMultiplexer::lock()
{
	++m_nLockCount;
}

//------------------------------------------------------------------
void OPropertyChangeMultiplexer::unlock()
{
	--m_nLockCount;
}

//------------------------------------------------------------------
void OPropertyChangeMultiplexer::dispose()
{
	if (m_bListening)
	{
		Reference< XPropertyChangeListener> xPreventDelete(this);

		const ::rtl::OUString* pProperties = m_aProperties.getConstArray();
		for (sal_Int32 i = 0; i < m_aProperties.getLength(); ++i, ++pProperties)
			m_xSet->removePropertyChangeListener(*pProperties, static_cast< XPropertyChangeListener*>(this));

		m_pListener->setAdapter(NULL);

		m_pListener = NULL;
		m_bListening = sal_False;

		if (m_bAutoSetRelease)
			m_xSet = NULL;
	}
}

// XEventListener
//------------------------------------------------------------------
void SAL_CALL OPropertyChangeMultiplexer::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;
}

// XPropertyChangeListener
//------------------------------------------------------------------
void SAL_CALL OPropertyChangeMultiplexer::propertyChange( const  PropertyChangeEvent& _rEvent ) throw( RuntimeException)
{
	if (m_pListener && !locked())
		m_pListener->_propertyChanged(_rEvent);
}

//------------------------------------------------------------------
void OPropertyChangeMultiplexer::addProperty(const ::rtl::OUString& _sPropertyName)
{
	if (m_xSet.is())
	{
		m_xSet->addPropertyChangeListener(_sPropertyName, static_cast< XPropertyChangeListener*>(this));
		m_aProperties.realloc(m_aProperties.getLength() + 1);
		m_aProperties.getArray()[m_aProperties.getLength()-1] = _sPropertyName;
		m_bListening = sal_True;
	}
}

//.........................................................................
}
//.........................................................................