/*************************************************************************
 *
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 * 
 * Copyright 2008 by Sun Microsystems, Inc.
 *
 * OpenOffice.org - a multi-platform office productivity suite
 *
 * $RCSfile: svt_whiter.cxx,v $
 * $Revision: 1.4 $
 *
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 * 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).
 *
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// MARKER(update_precomp.py): autogen include statement, do not remove

// INCLUDE ---------------------------------------------------------------
#ifndef GCC
#endif

#include "whiter.hxx"
#include <bf_svtools/itemset.hxx>

namespace binfilter
{

DBG_NAME(SfxWhichIter)

// -----------------------------------------------------------------------

SfxWhichIter::SfxWhichIter( const SfxItemSet& rSet, USHORT nFromWh, USHORT nToWh ):
	pRanges(rSet.GetRanges()),
	pStart(rSet.GetRanges()),
	nOfst(0), nFrom(nFromWh), nTo(nToWh)
{
	DBG_CTOR(SfxWhichIter, 0);
	if ( nFrom > 0 )
		FirstWhich();
}

// -----------------------------------------------------------------------

SfxWhichIter::~SfxWhichIter()
{
	DBG_DTOR(SfxWhichIter, 0);
}

// -----------------------------------------------------------------------

USHORT SfxWhichIter::NextWhich()
{
	DBG_CHKTHIS(SfxWhichIter, 0);
	while ( 0 != *pRanges )
	{
		const USHORT nLastWhich = *pRanges + nOfst;
		++nOfst;
		if (*(pRanges+1) == nLastWhich)
		{
			pRanges += 2;
			nOfst = 0;
		}
		USHORT nWhich = *pRanges + nOfst;
		if ( 0 == nWhich || ( nWhich >= nFrom && nWhich <= nTo ) )
			return nWhich;
	}
	return 0;
}

// -----------------------------------------------------------------------

USHORT SfxWhichIter::FirstWhich()
{
	DBG_CHKTHIS(SfxWhichIter, 0);
	pRanges = pStart;
	nOfst = 0;
	if ( *pRanges >= nFrom && *pRanges <= nTo )
		return *pRanges;
	return NextWhich();
}
}
