/*************************************************************************
 *
 * 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.
 *
 ************************************************************************/

// MARKER(update_precomp.py): autogen include statement, do not remove
#include "precompiled_comphelper.hxx"
#include <comphelper/weakeventlistener.hxx>
#include <osl/diagnose.h>


//.........................................................................
namespace comphelper
{
//.........................................................................

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

    //=====================================================================
    //= OWeakListenerAdapter
    //=====================================================================
    //---------------------------------------------------------------------
    OWeakListenerAdapterBase::~OWeakListenerAdapterBase()
    {
    }

    //=====================================================================
    //= OWeakEventListenerAdapter
    //=====================================================================
    //---------------------------------------------------------------------
    OWeakEventListenerAdapter::OWeakEventListenerAdapter( Reference< XWeak > _rxListener, Reference< XComponent > _rxBroadcaster )
        :OWeakEventListenerAdapter_Base( _rxListener, _rxBroadcaster )
    {
        // add ourself as listener to the broadcaster
        OSL_ENSURE( _rxBroadcaster.is(), "OWeakEventListenerAdapter::OWeakEventListenerAdapter: invalid broadcaster!" );
        if ( _rxBroadcaster.is() )
        {
            osl_incrementInterlockedCount( &m_refCount );
            {
                _rxBroadcaster->addEventListener( this );
            }
            osl_decrementInterlockedCount( &m_refCount );
            OSL_ENSURE( m_refCount > 0, "OWeakEventListenerAdapter::OWeakEventListenerAdapter: oops - not to be used with implementations which hold their listeners weak!" );
                // the one and only reason for this adapter class (A) is to add as listener to a component (C) which
                // holds its listeners hard, and forward all calls then to another listener (L) which is
                // held weak by A.
                // Now if C holds listeners weak, then we do not need A, we can add L directly to C.
        }

        OSL_ENSURE( getListener().is(), "OWeakEventListenerAdapter::OWeakEventListenerAdapter: invalid listener (does not support the XEventListener interface)!" );
    }

    //---------------------------------------------------------------------
    void SAL_CALL OWeakEventListenerAdapter::disposing( )
    {
        Reference< XComponent > xBroadcaster( getBroadcaster( ), UNO_QUERY );
        OSL_ENSURE( xBroadcaster.is(), "OWeakEventListenerAdapter::disposing: broadcaster is invalid in the meantime! How this?" );
        if ( xBroadcaster.is() )
        {
            xBroadcaster->removeEventListener( this );
        }

        resetListener();
    }

//.........................................................................
}   // namespace comphelper
//.........................................................................