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 * Copyright 2008 by Sun Microsystems, Inc.
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 * OpenOffice.org - a multi-platform office productivity suite
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 * $RCSfile: svt_listeneriter.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 "broadcast.hxx"
#include "listener.hxx"

namespace binfilter
{

SvtListenerIter* SvtListenerIter::pListenerIters = 0;

SvtListenerIter::SvtListenerIter( SvtBroadcaster& rBrdcst )
	: rRoot( rBrdcst )
{
	// hinten einketten!
	pNxtIter = 0;
	if( pListenerIters )
	{
		SvtListenerIter* pTmp = pListenerIters;
		while( pTmp->pNxtIter )
			pTmp = pTmp->pNxtIter;
		pTmp->pNxtIter = this;
	}
	else
		pListenerIters = this;

	pAkt = rRoot.pRoot;
	pDelNext = pAkt;
}



SvtListenerIter::~SvtListenerIter()
{
	if( pListenerIters )
	{
		if( pListenerIters == this )
			pListenerIters = pNxtIter;
		else
		{
			SvtListenerIter* pTmp = pListenerIters;
			while( pTmp->pNxtIter != this )
				if( 0 == ( pTmp = pTmp->pNxtIter ) )
					return ;
			pTmp->pNxtIter = pNxtIter;
		}
	}
}

void SvtListenerIter::RemoveListener( SvtListenerBase& rDel,
										SvtListenerBase* pNext )
{
	// Update the ListenerIter
	SvtListenerIter* pTmp = pListenerIters;
	while( pTmp )
	{
		if( pTmp->pAkt == &rDel || pTmp->pDelNext == &rDel )
			pTmp->pDelNext = pNext;
		pTmp = pTmp->pNxtIter;
	}
}

SvtListener* SvtListenerIter::GoNext()
{
	if( pDelNext == pAkt )
	{
		pAkt = pAkt->GetRight();
		pDelNext = pAkt;
	}
	else
		pAkt = pDelNext;
	return pAkt ? pAkt->GetListener() : 0;
}

SvtListener* SvtListenerIter::GoStart() 		// zum Anfang des Baums
{
	pAkt = rRoot.pRoot;
	if( pAkt )
		while( pAkt->GetLeft() )
			pAkt = pAkt->GetLeft();
	pDelNext = pAkt;
	return pAkt ? pAkt->GetListener() : 0;
}

}
