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/*************************************************************************
*
* 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.
*
************************************************************************/
#ifndef CHART2_WEAKLISTENERADAPTER_HXX
#define CHART2_WEAKLISTENERADAPTER_HXX
#include <com/sun/star/uno/XWeak.hpp>
#include <com/sun/star/lang/XEventListener.hpp>
#include <com/sun/star/util/XModifyListener.hpp>
#include <com/sun/star/view/XSelectionChangeListener.hpp>
#include <cppuhelper/weakref.hxx>
#include <cppuhelper/implbase1.hxx>
namespace chart
{
// --------------------------------------------------------------------------------
/** Adapter that enables adding listeners as weak UNO references. Thus, adding
an object as listener to a broadcaster does not increase its reference
count.
<p>The helper class, of course, is held as hard reference at the
broadcaster, but this should never be a problem as the adapter's life time
depends on no other object.</p>
<p>Note that in order to remove an object as listener, you have to remove
the same wrapper that you added, i.e., you should store the adapter as a
member in the adaptee class for later use.</p>
*/
template< class Listener >
class WeakListenerAdapter : public
::cppu::WeakImplHelper1< Listener >
{
public:
explicit WeakListenerAdapter( const ::com::sun::star::uno::Reference< Listener > & xListener ) :
m_xListener( xListener )
{}
explicit WeakListenerAdapter( const ::com::sun::star::uno::WeakReference< Listener > & xListener ) :
m_xListener( xListener )
{}
virtual ~WeakListenerAdapter()
{}
protected:
// ____ XEventListener (base of all listeners) ____
virtual void SAL_CALL disposing(
const ::com::sun::star::lang::EventObject& Source )
throw (::com::sun::star::uno::RuntimeException)
{
::com::sun::star::uno::Reference<
::com::sun::star::lang::XEventListener > xEventListener =
::com::sun::star::uno::Reference<
::com::sun::star::lang::XEventListener >(
::com::sun::star::uno::Reference< Listener >( m_xListener), ::com::sun::star::uno::UNO_QUERY );
if( xEventListener.is())
xEventListener->disposing( Source );
}
::com::sun::star::uno::Reference< Listener > getListener() const
{
return m_xListener;
}
private:
::com::sun::star::uno::WeakReference< Listener > m_xListener;
};
// --------------------------------------------------------------------------------
class WeakModifyListenerAdapter :
public WeakListenerAdapter< ::com::sun::star::util::XModifyListener >
{
public:
explicit WeakModifyListenerAdapter(
const ::com::sun::star::uno::WeakReference< ::com::sun::star::util::XModifyListener > & xListener );
virtual ~WeakModifyListenerAdapter();
protected:
// ____ XModifyListener ____
virtual void SAL_CALL modified( const ::com::sun::star::lang::EventObject& aEvent )
throw (::com::sun::star::uno::RuntimeException);
};
// --------------------------------------------------------------------------------
class WeakSelectionChangeListenerAdapter :
public WeakListenerAdapter< ::com::sun::star::view::XSelectionChangeListener >
{
public:
explicit WeakSelectionChangeListenerAdapter(
const ::com::sun::star::uno::Reference< ::com::sun::star::view::XSelectionChangeListener > & xListener );
virtual ~WeakSelectionChangeListenerAdapter();
protected:
// ____ XSelectionChangeListener ____
virtual void SAL_CALL selectionChanged(
const ::com::sun::star::lang::EventObject& aEvent )
throw (::com::sun::star::uno::RuntimeException);
};
} // namespace chart
// CHART2_WEAKLISTENERADAPTER_HXX
#endif
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