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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.
*
************************************************************************/
// MARKER(update_precomp.py): autogen include statement, do not remove
#include "precompiled_svl.hxx"
#include <tools/debug.hxx>
#include <svl/broadcast.hxx>
#include <svl/listener.hxx>
#include "listenerbase.hxx"
#include <svl/listeneriter.hxx>
//====================================================================
TYPEINIT0(SvtListener);
//====================================================================
// simple ctor of class SvtListener
SvtListener::SvtListener()
: pBrdCastLst( 0 )
{
}
//--------------------------------------------------------------------
// copy ctor of class SvtListener
SvtListener::SvtListener( const SvtListener &rListener )
: pBrdCastLst( 0 )
{
SvtListenerBase* pLst = rListener.pBrdCastLst;
while( pLst )
{
new SvtListenerBase( *this, *pLst->GetBroadcaster() );
pLst = pLst->GetNext();
}
}
//--------------------------------------------------------------------
// unregisteres the SvtListener from its SvtBroadcasters
SvtListener::~SvtListener()
{
EndListeningAll();
}
//--------------------------------------------------------------------
// registeres at a specific SvtBroadcaster
sal_Bool SvtListener::StartListening( SvtBroadcaster& rBroadcaster )
{
const SvtListenerBase* pLst = pBrdCastLst;
while( pLst )
{
if( &rBroadcaster == pLst->GetBroadcaster() )
{
// double, than return
return sal_False;
}
pLst = pLst->GetNext();
}
new SvtListenerBase( *this, rBroadcaster );
return sal_True;
}
//--------------------------------------------------------------------
// unregisteres at a specific SvtBroadcaster
sal_Bool SvtListener::EndListening( SvtBroadcaster& rBroadcaster )
{
SvtListenerBase *pLst = pBrdCastLst, *pPrev = pLst;
while( pLst )
{
if( &rBroadcaster == pLst->GetBroadcaster() )
{
if( pBrdCastLst == pLst )
pBrdCastLst = pLst->GetNext();
else
pPrev->SetNext( pLst->GetNext() );
delete pLst;
return sal_True;
}
pPrev = pLst;
pLst = pLst->GetNext();
}
return sal_False;
}
//--------------------------------------------------------------------
// unregisteres all Broadcasters
void SvtListener::EndListeningAll()
{
SvtListenerBase *pLst = pBrdCastLst;
while( pLst )
{
SvtListenerBase *pDel = pLst;
pLst = pLst->GetNext();
delete pDel;
}
pBrdCastLst = 0;
}
//--------------------------------------------------------------------
sal_Bool SvtListener::IsListening( SvtBroadcaster& rBroadcaster ) const
{
const SvtListenerBase *pLst = pBrdCastLst;
while( pLst )
{
if( &rBroadcaster == pLst->GetBroadcaster() )
break;
pLst = pLst->GetNext();
}
return 0 != pLst;
}
//--------------------------------------------------------------------
// base implementation of notification handler
void SvtListener::Notify( SvtBroadcaster&
#ifdef DBG_UTIL
rBC
#endif
, const SfxHint& )
{
DBG_ASSERT( IsListening( rBC ),
"notification from unregistered broadcaster" );
}
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