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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 .
*/
#pragma once
#include <com/sun/star/util/XModifyListener.hpp>
#include <com/sun/star/util/XModifyBroadcaster.hpp>
#include <cppuhelper/compbase.hxx>
#include "MutexContainer.hxx"
#include <vector>
#include <algorithm>
#include <utility>
namespace com::sun::star::uno { class XWeak; }
namespace com::sun::star::uno { template <class interface_type> class WeakReference; }
namespace chart::ModifyListenerHelper
{
css::uno::Reference< css::util::XModifyListener > createModifyEventForwarder();
/** This helper class serves as forwarder of modify events. It can be used
whenever an object has to send modify events after it gets a modify event of
one of its children.
<p>The listeners are held as WeakReferences if they support XWeak. Thus the
life time of the listeners is independent of the broadcaster's lifetime in
this case.</p>
*/
class ModifyEventForwarder :
public MutexContainer,
public ::cppu::WeakComponentImplHelper<
css::util::XModifyBroadcaster,
css::util::XModifyListener >
{
public:
ModifyEventForwarder();
void AddListener(
const css::uno::Reference< css::util::XModifyListener >& aListener );
void RemoveListener(
const css::uno::Reference< css::util::XModifyListener >& aListener );
protected:
// ____ XModifyBroadcaster ____
virtual void SAL_CALL addModifyListener(
const css::uno::Reference< css::util::XModifyListener >& aListener ) override;
virtual void SAL_CALL removeModifyListener(
const css::uno::Reference< css::util::XModifyListener >& aListener ) override;
// ____ XModifyListener ____
virtual void SAL_CALL modified(
const css::lang::EventObject& aEvent ) override;
// ____ XEventListener (base of XModifyListener) ____
virtual void SAL_CALL disposing(
const css::lang::EventObject& Source ) override;
// ____ WeakComponentImplHelperBase ____
virtual void SAL_CALL disposing() override;
private:
/// call disposing() at all listeners and remove all listeners
void DisposeAndClear( const css::uno::Reference<
css::uno::XWeak > & xSource );
// ::osl::Mutex & m_rMutex;
::cppu::OBroadcastHelper m_aModifyListeners;
typedef std::vector<
std::pair<
css::uno::WeakReference< css::util::XModifyListener >,
css::uno::Reference< css::util::XModifyListener > > >
tListenerMap;
tListenerMap m_aListenerMap;
};
namespace impl
{
template< class InterfaceRef >
struct addListenerFunctor
{
explicit addListenerFunctor( const css::uno::Reference< css::util::XModifyListener > & xListener ) :
m_xListener( xListener )
{}
void operator() ( const InterfaceRef & xObject )
{
css::uno::Reference< css::util::XModifyBroadcaster >
xBroadcaster( xObject, css::uno::UNO_QUERY );
if( xBroadcaster.is() && m_xListener.is())
xBroadcaster->addModifyListener( m_xListener );
}
private:
css::uno::Reference< css::util::XModifyListener > m_xListener;
};
template< class InterfaceRef >
struct removeListenerFunctor
{
explicit removeListenerFunctor( const css::uno::Reference< css::util::XModifyListener > & xListener ) :
m_xListener( xListener )
{}
void operator() ( const InterfaceRef & xObject )
{
css::uno::Reference< css::util::XModifyBroadcaster >
xBroadcaster( xObject, css::uno::UNO_QUERY );
if( xBroadcaster.is() && m_xListener.is())
xBroadcaster->removeModifyListener( m_xListener );
}
private:
css::uno::Reference< css::util::XModifyListener > m_xListener;
};
template< class Pair >
struct addListenerToMappedElementFunctor
{
explicit addListenerToMappedElementFunctor( const css::uno::Reference< css::util::XModifyListener > & xListener ) :
m_xListener( xListener )
{}
void operator() ( const Pair & aPair )
{
css::uno::Reference< css::util::XModifyBroadcaster >
xBroadcaster( aPair.second, css::uno::UNO_QUERY );
if( xBroadcaster.is() && m_xListener.is())
xBroadcaster->addModifyListener( m_xListener );
}
private:
css::uno::Reference< css::util::XModifyListener > m_xListener;
};
template< class Pair >
struct removeListenerFromMappedElementFunctor
{
explicit removeListenerFromMappedElementFunctor( const css::uno::Reference< css::util::XModifyListener > & xListener ) :
m_xListener( xListener )
{}
void operator() ( const Pair & aPair )
{
css::uno::Reference< css::util::XModifyBroadcaster >
xBroadcaster( aPair.second, css::uno::UNO_QUERY );
if( xBroadcaster.is() && m_xListener.is())
xBroadcaster->removeModifyListener( m_xListener );
}
private:
css::uno::Reference< css::util::XModifyListener > m_xListener;
};
} // namespace impl
template< class InterfaceRef >
void addListener(
const InterfaceRef & xObject,
const css::uno::Reference< css::util::XModifyListener > & xListener )
{
if( xListener.is())
{
impl::addListenerFunctor< InterfaceRef > aFunctor( xListener );
aFunctor( xObject );
}
}
template< class Container >
void addListenerToAllElements(
const Container & rContainer,
const css::uno::Reference< css::util::XModifyListener > & xListener )
{
if( xListener.is())
std::for_each( rContainer.begin(), rContainer.end(),
impl::addListenerFunctor< typename Container::value_type >( xListener ));
}
template< class Container >
void addListenerToAllMapElements(
const Container & rContainer,
const css::uno::Reference< css::util::XModifyListener > & xListener )
{
if( xListener.is())
std::for_each( rContainer.begin(), rContainer.end(),
impl::addListenerToMappedElementFunctor< typename Container::value_type >( xListener ));
}
template< typename T >
void addListenerToAllSequenceElements(
const css::uno::Sequence< T > & rSequence,
const css::uno::Reference< css::util::XModifyListener > & xListener )
{
if( xListener.is())
std::for_each( rSequence.begin(), rSequence.end(),
impl::addListenerFunctor< T >( xListener ));
}
template< class InterfaceRef >
void removeListener(
const InterfaceRef & xObject,
const css::uno::Reference< css::util::XModifyListener > & xListener )
{
if( xListener.is())
{
impl::removeListenerFunctor< InterfaceRef > aFunctor( xListener );
aFunctor( xObject );
}
}
template< class Container >
void removeListenerFromAllElements(
const Container & rContainer,
const css::uno::Reference< css::util::XModifyListener > & xListener )
{
if( xListener.is())
std::for_each( rContainer.begin(), rContainer.end(),
impl::removeListenerFunctor< typename Container::value_type >( xListener ));
}
template< class Container >
void removeListenerFromAllMapElements(
const Container & rContainer,
const css::uno::Reference< css::util::XModifyListener > & xListener )
{
if( xListener.is())
std::for_each( rContainer.begin(), rContainer.end(),
impl::removeListenerFromMappedElementFunctor< typename Container::value_type >( xListener ));
}
template< typename T >
void removeListenerFromAllSequenceElements(
const css::uno::Sequence< T > & rSequence,
const css::uno::Reference< css::util::XModifyListener > & xListener )
{
if( xListener.is())
std::for_each( rSequence.begin(), rSequence.end(),
impl::removeListenerFunctor< T >( xListener ));
}
} // namespace chart::ModifyListenerHelper
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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