/*
 * 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;

/**
 * SipHeaders extends class sip.header.SipHeaders by adding new SIP header
 * names.
 */
public class SipHeaders extends BaseSipHeaders {

	// ****************************** Extensions
	// *******************************/

	/** String "Refer-To" */
	public static final String Refer_To = "Refer-To";

	/** Whether <i>str</i> is "Refer-To" */
	public static boolean isReferTo(String str) {
		return same(str, Refer_To);
	}

	/** String "Referred-By" */
	public static final String Referred_By = "Referred-By";

	/** Whether <i>str</i> is "Referred-By" */
	public static boolean isReferredBy(String str) {
		return same(str, Referred_By);
	}

	/** String "Event" */
	public static final String Event = "Event";
	/** String "o" */
	public static final String Event_short = "o";

	/** Whether <i>str</i> is an Event field */
	public static boolean isEvent(String str) {
		return same(str, Event) || same(str, Event_short);
	}

	/** String "Allow-Events" */
	public static final String Allow_Events = "Allow-Events";

	/** Whether <i>str</i> is "Allow-Events" */
	public static boolean isAllowEvents(String str) {
		return same(str, Allow_Events);
	}

	/** String "Subscription-State" */
	public static final String Subscription_State = "Subscription-State";

	/** Whether <i>str</i> is an Subscription_State field */
	public static boolean isSubscriptionState(String str) {
		return same(str, Subscription_State);
	}

}
