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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* 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 .
*/
#include <ModifyListenerHelper.hxx>
#include <WeakListenerAdapter.hxx>
#include <cppuhelper/interfacecontainer.hxx>
using namespace ::com::sun::star;
using ::com::sun::star::uno::Reference;
namespace
{
void lcl_fireModifyEvent(
::cppu::OBroadcastHelper const & rBroadcastHelper,
const Reference< uno::XWeak > & xEventSource,
const lang::EventObject * pEvent )
{
::cppu::OInterfaceContainerHelper * pCntHlp = rBroadcastHelper.getContainer(
cppu::UnoType<util::XModifyListener>::get());
if( pCntHlp )
{
lang::EventObject aEventToSend;
if( pEvent )
aEventToSend = *pEvent;
else
aEventToSend.Source.set( xEventSource );
OSL_ENSURE( aEventToSend.Source.is(), "Sending event without source" );
::cppu::OInterfaceIteratorHelper aIt( *pCntHlp );
while( aIt.hasMoreElements())
{
Reference< util::XModifyListener > xModListener( aIt.next(), uno::UNO_QUERY );
if( xModListener.is())
xModListener->modified( aEventToSend );
}
}
}
struct lcl_weakReferenceToSame
{
explicit lcl_weakReferenceToSame( const Reference< util::XModifyListener > & xModListener ) :
m_xHardRef( xModListener )
{}
// argument type is same as tListenerMap::value_type&
bool operator() ( const std::pair<css::uno::WeakReference< css::util::XModifyListener>,
css::uno::Reference< css::util::XModifyListener> > & xElem )
{
Reference< util::XModifyListener > xWeakAsHard( xElem.first );
if( xWeakAsHard.is())
return (xWeakAsHard == m_xHardRef);
return false;
}
private:
Reference< util::XModifyListener > m_xHardRef;
};
} // anonymous namespace
namespace chart
{
namespace ModifyListenerHelper
{
uno::Reference< util::XModifyListener > createModifyEventForwarder()
{
return new ModifyEventForwarder();
}
ModifyEventForwarder::ModifyEventForwarder() :
::cppu::WeakComponentImplHelper<
css::util::XModifyBroadcaster,
css::util::XModifyListener >( m_aMutex ),
m_aModifyListeners( m_aMutex )
{
}
void ModifyEventForwarder::AddListener( const Reference< util::XModifyListener >& aListener )
{
try
{
Reference< util::XModifyListener > xListenerToAdd( aListener );
Reference< uno::XWeak > xWeak( aListener, uno::UNO_QUERY );
if( xWeak.is())
{
// remember the helper class for later remove
uno::WeakReference< util::XModifyListener > xWeakRef( aListener );
xListenerToAdd.set( new WeakModifyListenerAdapter( xWeakRef ));
m_aListenerMap.emplace_back( xWeakRef, xListenerToAdd );
}
m_aModifyListeners.addListener( cppu::UnoType<decltype(xListenerToAdd)>::get(), xListenerToAdd );
}
catch( const uno::Exception & ex )
{
SAL_WARN("chart2", "Exception caught. " << ex );
}
}
void ModifyEventForwarder::RemoveListener( const Reference< util::XModifyListener >& aListener )
{
try
{
// look up fitting helper class that has been added
Reference< util::XModifyListener > xListenerToRemove( aListener );
tListenerMap::iterator aIt(
std::find_if( m_aListenerMap.begin(), m_aListenerMap.end(), lcl_weakReferenceToSame( aListener )));
if( aIt != m_aListenerMap.end())
{
xListenerToRemove.set( (*aIt).second );
// map entry is no longer needed
m_aListenerMap.erase( aIt );
}
m_aModifyListeners.removeListener( cppu::UnoType<decltype(aListener)>::get(), xListenerToRemove );
}
catch( const uno::Exception & ex )
{
SAL_WARN("chart2", "Exception caught. " << ex );
}
}
void ModifyEventForwarder::DisposeAndClear( const Reference< uno::XWeak > & xSource )
{
::cppu::OInterfaceContainerHelper * pCntHlp = m_aModifyListeners.getContainer(
cppu::UnoType<util::XModifyListener>::get());
if( pCntHlp )
pCntHlp->disposeAndClear( lang::EventObject( xSource ) );
}
// ____ XModifyBroadcaster ____
void SAL_CALL ModifyEventForwarder::addModifyListener( const Reference< util::XModifyListener >& aListener )
{
AddListener( aListener );
}
void SAL_CALL ModifyEventForwarder::removeModifyListener( const Reference< util::XModifyListener >& aListener )
{
RemoveListener( aListener );
}
// ____ XModifyListener ____
void SAL_CALL ModifyEventForwarder::modified( const lang::EventObject& aEvent )
{
lcl_fireModifyEvent( m_aModifyListeners, Reference< uno::XWeak >(), &aEvent );
}
// ____ XEventListener (base of XModifyListener) ____
void SAL_CALL ModifyEventForwarder::disposing( const lang::EventObject& /* Source */ )
{
// nothing
}
// ____ WeakComponentImplHelperBase ____
void SAL_CALL ModifyEventForwarder::disposing()
{
// dispose was called at this
DisposeAndClear( this );
}
} // namespace ModifyListenerHelper
} // namespace chart
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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