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 * OpenOffice.org - a multi-platform office productivity suite
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 * $RCSfile: svt_listenerbase.cxx,v $
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// MARKER(update_precomp.py): autogen include statement, do not remove

#ifndef GCC
#endif

#ifndef DEBUG_HXX
#include <tools/debug.hxx>
#endif

#include "listenerbase.hxx"
#include "listeneriter.hxx"
#include "listener.hxx"
#include "broadcast.hxx"

namespace binfilter
{


SvtListenerBase::SvtListenerBase( SvtListener& rLst,
								  SvtBroadcaster& rBroadcaster )
	: pLeft( 0 ), pRight( 0 ),
	pBroadcaster( &rBroadcaster ), pListener( &rLst )
{
	pNext = rLst.pBrdCastLst;
	rLst.pBrdCastLst = this;

	if( pBroadcaster->pRoot )
	{
		// set ever behind the root
		pRight = pBroadcaster->pRoot->pRight;
		pBroadcaster->pRoot->pRight = this;
		this->pLeft = pBroadcaster->pRoot;
		if( pRight )
			pRight->pLeft = this;
	}
	else
		pBroadcaster->pRoot = this;
}

SvtListenerBase::~SvtListenerBase()
{
	SvtListenerBase *pR = pRight, *pL = pLeft;
	if( pBroadcaster->pRoot )
		pBroadcaster->pRoot = pL ? pL : pR;

	if( pL )
		pL->pRight = pR;
	if( pR )
		pR->pLeft = pL;

	SvtListenerIter::RemoveListener( *this, pR );

	if( !pBroadcaster->pRoot )
		pBroadcaster->ListenersGone();
}


}
