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/*************************************************************************
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* Copyright 2008 by Sun Microsystems, Inc.
*
* OpenOffice.org - a multi-platform office productivity suite
*
* $RCSfile: propertiesfilterednotifier.cxx,v $
* $Revision: 1.5 $
*
* 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_configmgr.hxx"
#include "propertiesfilterednotifier.hxx"
#include <cppuhelper/queryinterface.hxx>
namespace configmgr
{
namespace uno = ::com::sun::star::uno;
namespace lang = ::com::sun::star::lang;
namespace beans = ::com::sun::star::beans;
//-----------------------------------------------------------------------------
// class PropertiesFilteredNotifier
//-----------------------------------------------------------------------------
PropertiesFilteredNotifier::PropertiesFilteredNotifier(
uno::Reference< beans::XPropertiesChangeListener >const& xTarget,
uno::Sequence< rtl::OUString > const& aFilterNames
)
: m_aRefCount()
, m_xTarget(xTarget)
, m_aFilterNames(aFilterNames)
{
OSL_ENSURE(xTarget.is(),"PropertiesFilteredNotifier: FORWARDING TO NULL LISTENER");
OSL_ENSURE(aFilterNames.getLength() > 0,"PropertiesFilteredNotifier: FILTER IS EMPTY (no target)");
}
//-----------------------------------------------------------------------------
PropertiesFilteredNotifier::~PropertiesFilteredNotifier()
{
}
//-----------------------------------------------------------------------------
void SAL_CALL PropertiesFilteredNotifier::acquire() throw()
{
m_aRefCount.acquire();
}
//-----------------------------------------------------------------------------
void SAL_CALL PropertiesFilteredNotifier::release( ) throw()
{
if (m_aRefCount.release() == 0)
delete this;
}
//-----------------------------------------------------------------------------
uno::Any SAL_CALL PropertiesFilteredNotifier::queryInterface( const uno::Type& aType )
throw(uno::RuntimeException)
{
return cppu::queryInterface(aType
, static_cast< beans::XPropertiesChangeListener *>(this)
, static_cast< lang::XEventListener *>(this)
, static_cast< uno::XInterface *>(this)
);
}
//-----------------------------------------------------------------------------
void SAL_CALL PropertiesFilteredNotifier::disposing( const lang::EventObject& Source )
throw(uno::RuntimeException)
{
if (m_xTarget.is())
m_xTarget->disposing(Source);
}
//-----------------------------------------------------------------------------
inline // private and only used twice
bool PropertiesFilteredNotifier::implAccept(const ::com::sun::star::beans::PropertyChangeEvent& evt) const
{
// todo: optimize by presorting and binary searching
sal_Int32 const nCount = m_aFilterNames.getLength();
for (sal_Int32 i = 0; i<nCount; ++i)
if (evt.PropertyName == m_aFilterNames[i])
return true;
return false;
}
//-----------------------------------------------------------------------------
// private and only used once
uno::Sequence< beans::PropertyChangeEvent > PropertiesFilteredNotifier::implFilter(const uno::Sequence< beans::PropertyChangeEvent >& evt) const
{
sal_Int32 const nSize = evt.getLength();
sal_Int32 nAccepted = 0;
while ( nAccepted < nSize && implAccept(evt[nAccepted]) )
++nAccepted;
if (nAccepted == nSize) // all accepted
return evt;
// create a modified copy
uno::Sequence< beans::PropertyChangeEvent > aResult(evt);
for (sal_Int32 nCur = nAccepted+1; nCur<nSize; ++nCur)
{
if (implAccept(evt[nCur]))
{
aResult[nAccepted++] = evt[nCur];
}
}
aResult.realloc(nAccepted);
OSL_ASSERT(aResult.getLength() == nAccepted);
return aResult;
}
//-----------------------------------------------------------------------------
void SAL_CALL PropertiesFilteredNotifier::propertiesChange( const uno::Sequence< beans::PropertyChangeEvent >& evt )
throw(uno::RuntimeException)
{
uno::Sequence< beans::PropertyChangeEvent > aFilteredEvt( implFilter(evt) );
if (aFilteredEvt.getLength() > 0)
{
if (m_xTarget.is())
m_xTarget->propertiesChange(aFilteredEvt);
}
}
//-----------------------------------------------------------------------------
}
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