/*
 * Copyright 2014 (C) Thomas Parker <thpr@users.sourceforge.net>
 * 
 * This library is free software; you can redistribute it and/or modify it under
 * the terms of the GNU Lesser General Public License as published by the Free
 * Software Foundation; either version 2.1 of the License, or (at your option)
 * any later version.
 * 
 * This library 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 for more
 * details.
 * 
 * You should have received a copy of the GNU Lesser General Public License
 * along with this library; if not, write to the Free Software Foundation, Inc.,
 * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 */
package plugin.lsttokens;

import java.util.StringTokenizer;

import pcgen.base.lang.StringUtil;
import pcgen.cdom.base.CDOMObject;
import pcgen.cdom.base.Constants;
import pcgen.cdom.enumeration.ListKey;
import pcgen.rules.context.Changes;
import pcgen.rules.context.LoadContext;
import pcgen.rules.persistence.token.AbstractTokenWithSeparator;
import pcgen.rules.persistence.token.CDOMPrimaryToken;
import pcgen.rules.persistence.token.ParseResult;

public class GroupLst extends AbstractTokenWithSeparator<CDOMObject> implements
		CDOMPrimaryToken<CDOMObject>
{
	@Override
	public String getTokenName()
	{
		return "GROUP";
	}

	@Override
	protected char separator()
	{
		return '|';
	}

	@Override
	protected ParseResult parseTokenWithSeparator(LoadContext context,
		CDOMObject cdo, String value)
	{
		StringTokenizer tok = new StringTokenizer(value, Constants.PIPE);
		while (tok.hasMoreTokens())
		{
			cdo.addToListFor(ListKey.GROUP, tok.nextToken());
		}
		return ParseResult.SUCCESS;
	}

	@Override
	public String[] unparse(LoadContext context, CDOMObject cdo)
	{
		Changes<String> changes =
				context.getObjectContext().getListChanges(cdo, ListKey.GROUP);
		if (changes == null || changes.isEmpty())
		{
			return null;
		}
		return new String[]{StringUtil.join(changes.getAdded(), Constants.PIPE)};
	}

	@Override
	public Class<CDOMObject> getTokenClass()
	{
		return CDOMObject.class;
	}
}