/*
 * Copyright (C) 2005 Luca Veltri - University of Parma - Italy
 * 
 * This file is part of MjSip (http://www.mjsip.org)
 * 
 * MjSip is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 * 
 * MjSip 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 General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with MjSip; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 * 
 * Author(s):
 * Luca Veltri (luca.veltri@unipr.it)
 */

package org.zoolu.sip.header;

import org.zoolu.tools.Parser;

/**
 * SIP Event header (RFC 3265).
 * <p>
 * Event is a request header field (request-header). It appears in SUBSCRIBE and
 * NOTIFY requests. It provides a event-package name.
 */
public class EventHeader extends ParametricHeader {
	/** State delimiters. */
	private static final char[] delim = { ',', ';', ' ', '\t', '\n', '\r' };

	/** Costructs a new EventHeader. */
	public EventHeader(String event_package) {
		super(SipHeaders.Event, event_package);
	}

	/** Costructs a new EventHeader. */
	public EventHeader(String event_package, String id) {
		super(SipHeaders.Event, event_package);
		if (id != null)
			this.setParameter("id", id);
	}

	/** Costructs a new EventHeader. */
	public EventHeader(Header hd) {
		super(hd);
	}

	/** Gets the event name. */
	public String getEvent() {
		return new Parser(value).getWord(delim);
	}

	/** Gets 'id' parameter. */
	public String getId() {
		return this.getParameter("id");
	}

	/** Whether it has 'id' parameter. */
	public boolean hasId() {
		return this.hasParameter("id");
	}

}
