/*
 * Copyright (C) 2010 Teleal GmbH, Switzerland
 *
 * This program 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 3 of
 * the License, or (at your option) any later version.
 *
 * This program 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 program.  If not, see <http://www.gnu.org/licenses/>.
 */

package org.teleal.cling.model.message.header;

import org.teleal.cling.model.types.UnsignedIntegerFourBytes;

/**
 * @author Christian Bauer
 */
public class EventSequenceHeader extends UpnpHeader<UnsignedIntegerFourBytes> {

    public EventSequenceHeader() {
    }

    public EventSequenceHeader(long value) {
        setValue(new UnsignedIntegerFourBytes(value));
    }

    public void setString(String s) throws InvalidHeaderException {

        // Cut off leading zeros
        if (!"0".equals(s)) {
            while(s.startsWith("0")) {
                s = s.substring(1);
            }
        }

        try {
            setValue(new UnsignedIntegerFourBytes(s));
        } catch (NumberFormatException ex) {
            throw new InvalidHeaderException("Invalid event sequence, " + ex.getMessage());
        }

    }

    public String getString() {
        return getValue().toString();
    }
}
