/**************************************************************
 * 
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 * 
 *   http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 * 
 *************************************************************/


// MARKER(update_precomp.py): autogen include statement, do not remove
#include "precompiled_svl.hxx"

#ifndef GCC
#endif

#include <svl/itemiter.hxx>
#include <svl/itempool.hxx>
#include <svl/itemset.hxx>

// STATIC DATA -----------------------------------------------------------

DBG_NAME(SfxItemIter);


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


SfxItemIter::SfxItemIter( const SfxItemSet& rItemSet )
	: _rSet( rItemSet )
{
	DBG_CTOR(SfxItemIter, 0);
	DBG_ASSERTWARNING( _rSet.Count(), "es gibt gar keine Attribute" );

	if ( !_rSet._nCount )
	{
		_nStt = 1;
		_nEnd = 0;
	}
	else
	{
		SfxItemArray ppFnd = _rSet._aItems;

		// suche das 1. gesetzte Item
		for ( _nStt = 0; !*(ppFnd + _nStt ); ++_nStt )
			; // empty loop
		if ( 1 < _rSet.Count() )
			for( _nEnd = _rSet.TotalCount(); !*( ppFnd + --_nEnd);	)
				; // empty loop
		else
			_nEnd = _nStt;
	}

	_nAkt = _nStt;
}

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


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

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


const SfxPoolItem* SfxItemIter::NextItem()
{
	DBG_CHKTHIS(SfxItemIter, 0);
	SfxItemArray ppFnd = _rSet._aItems;

	if( _nAkt < _nEnd )
	{
		do {
			_nAkt++;
		} while( _nAkt < _nEnd && !*(ppFnd + _nAkt ) );
		return *(ppFnd+_nAkt);
	}
	return 0;
}

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


const SfxPoolItem* SfxItemIter::PrevItem()
{
	DBG_CHKTHIS(SfxItemIter, 0);
	SfxItemArray ppFnd = _rSet._aItems;

	if ( _nAkt > _nStt )
	{
		do {
			--_nAkt;
		} while( _nAkt && !*(ppFnd + _nAkt ));
		return *(ppFnd+_nAkt);
	}
	return 0;
}