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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 <sal/config.h>
#include <vector>
#include <com/sun/star/lang/XComponent.hpp>
#include <unotools/eventlisteneradapter.hxx>
#include <osl/diagnose.h>
#include <cppuhelper/implbase.hxx>
#include <rtl/ref.hxx>
namespace utl
{
using namespace ::com::sun::star::uno;
using namespace ::com::sun::star::lang;
//= OEventListenerImpl
class OEventListenerImpl : public ::cppu::WeakImplHelper< XEventListener >
{
protected:
OEventListenerAdapter* m_pAdapter;
Reference< XEventListener > m_xKeepMeAlive;
// imagine an implementation of XComponent which holds it's listeners with a weak reference ...
// would be very bad if we don't hold ourself
Reference< XComponent > m_xComponent;
public:
OEventListenerImpl( OEventListenerAdapter* _pAdapter, const Reference< XComponent >& _rxComp );
void dispose();
const Reference< XComponent >& getComponent() const { return m_xComponent; }
protected:
virtual void SAL_CALL disposing( const EventObject& _rSource ) override;
};
OEventListenerImpl::OEventListenerImpl( OEventListenerAdapter* _pAdapter, const Reference< XComponent >& _rxComp )
:m_pAdapter(_pAdapter)
{
OSL_ENSURE(m_pAdapter, "OEventListenerImpl::OEventListenerImpl: invalid adapter!");
// no checks of _rxComp !!
// (OEventListenerAdapter is responsible for this)
// just in case addEventListener throws an exception ... don't initialize m_xKeepMeAlive before this
// is done
Reference< XEventListener > xMeMyselfAndI = this;
_rxComp->addEventListener(xMeMyselfAndI);
m_xComponent = _rxComp;
m_xKeepMeAlive = xMeMyselfAndI;
}
void OEventListenerImpl::dispose()
{
if (m_xComponent.is())
{
if (m_xKeepMeAlive.is())
m_xComponent->removeEventListener(m_xKeepMeAlive);
m_xComponent.clear();
m_xKeepMeAlive.clear();
}
}
void SAL_CALL OEventListenerImpl::disposing( const EventObject& _rSource )
{
Reference< XEventListener > xDeleteUponLeaving = m_xKeepMeAlive;
m_xKeepMeAlive.clear();
m_pAdapter->_disposing(_rSource);
}
//= OEventListenerAdapterImpl
struct OEventListenerAdapterImpl
{
public:
std::vector< rtl::Reference<OEventListenerImpl> > aListeners;
};
//= OEventListenerAdapter
OEventListenerAdapter::OEventListenerAdapter()
:m_pImpl(new OEventListenerAdapterImpl)
{
}
OEventListenerAdapter::~OEventListenerAdapter()
{
stopAllComponentListening( );
}
void OEventListenerAdapter::stopComponentListening( const css::uno::Reference< css::lang::XComponent >& _rxComp )
{
if ( m_pImpl->aListeners.empty() )
return;
auto it = m_pImpl->aListeners.begin();
do
{
rtl::Reference<OEventListenerImpl>& pListenerImpl = *it;
if ((pListenerImpl->getComponent().get() == _rxComp.get()) || (pListenerImpl->getComponent() == _rxComp))
{
pListenerImpl->dispose();
it = m_pImpl->aListeners.erase( it );
}
else
++it;
}
while ( it != m_pImpl->aListeners.end() );
}
void OEventListenerAdapter::stopAllComponentListening( )
{
for ( const auto & i : m_pImpl->aListeners )
{
i->dispose();
}
m_pImpl->aListeners.clear();
}
void OEventListenerAdapter::startComponentListening( const Reference< XComponent >& _rxComp )
{
if (!_rxComp.is())
{
OSL_FAIL("OEventListenerAdapter::startComponentListening: invalid component!");
return;
}
OEventListenerImpl* pListenerImpl = new OEventListenerImpl(this, _rxComp);
m_pImpl->aListeners.emplace_back(pListenerImpl);
}
} // namespace utl
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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