SelectionMultiplex.cxx

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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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#include <comphelper/SelectionMultiplex.hxx>
#include <com/sun/star/view/XSelectionSupplier.hpp>

namespace comphelper
{


using namespace ::com::sun::star::uno;
using namespace ::com::sun::star::lang;
using namespace ::com::sun::star::view;

OSelectionChangeListener::~OSelectionChangeListener()
{
}


void OSelectionChangeListener::_disposing(const EventObject&)
{
    // nothing to do here
}


OSelectionChangeMultiplexer::OSelectionChangeMultiplexer(OSelectionChangeListener* _pListener, const  Reference< XSelectionSupplier>& _rxSet)
            :m_xSet(_rxSet)
            ,m_pListener(_pListener)
            ,m_nLockCount(0)
{
    osl_atomic_increment(&m_refCount);
    {
        Reference< XSelectionChangeListener> xPreventDelete(this);
        m_xSet->addSelectionChangeListener(xPreventDelete);
    }
    osl_atomic_decrement(&m_refCount);
}


OSelectionChangeMultiplexer::~OSelectionChangeMultiplexer()
{
}


void OSelectionChangeMultiplexer::lock()
{
    ++m_nLockCount;
}


void OSelectionChangeMultiplexer::unlock()
{
    --m_nLockCount;
}


// XEventListener

void SAL_CALL OSelectionChangeMultiplexer::disposing( const  EventObject& _rSource)
{
    if (m_pListener)
    {
         // tell the listener
        if (!locked())
            m_pListener->_disposing(_rSource);
    }

    m_pListener = nullptr;

    m_xSet = nullptr;
}

// XSelectionChangeListener

void SAL_CALL OSelectionChangeMultiplexer::selectionChanged( const  EventObject& _rEvent )
{
    if (m_pListener && !locked())
        m_pListener->_selectionChanged(_rEvent);
}

}


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