/*
* Conditions Of Use
*
* This software was developed by employees of the National Institute of
* Standards and Technology (NIST), an agency of the Federal Government.
* Pursuant to title 15 Untied States Code Section 105, works of NIST
* employees are not subject to copyright protection in the United States
* and are considered to be in the public domain.  As a result, a formal
* license is not needed to use the software.
*
* This software is provided by NIST as a service and is expressly
* provided "AS IS."  NIST MAKES NO WARRANTY OF ANY KIND, EXPRESS, IMPLIED
* OR STATUTORY, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTY OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, NON-INFRINGEMENT
* AND DATA ACCURACY.  NIST does not warrant or make any representations
* regarding the use of the software or the results thereof, including but
* not limited to the correctness, accuracy, reliability or usefulness of
* the software.
*
* Permission to use this software is contingent upon your acceptance
* of the terms of this agreement
*
* .
*
*/
/*******************************************************************************
* Product of NIST/ITL Advanced Networking Technologies Division (ANTD).        *
*******************************************************************************/
package gov.nist.javax.sip.header;

import java.text.ParseException;

/**
 * AllowEvents SIPHeader.
 *
 * @author M. Ranganathan  NIST/ITL ANTD. <br/>
 * @author Olivier Deruelle <br/>
 *
 *
 * @version 1.2 $Revision: 1.8 $ $Date: 2010-05-06 14:07:48 $
 * @since 1.1
 */
public final class AllowEvents
    extends SIPHeader
    implements javax.sip.header.AllowEventsHeader {

    /**
     * Comment for <code>serialVersionUID</code>
     */
    private static final long serialVersionUID = 617962431813193114L;
    /** method field
     */
    protected String eventType;

    /** default constructor
     */
    public AllowEvents() {
        super(ALLOW_EVENTS);
    }

    /** constructor
     * @param m String to set
     */
    public AllowEvents(String m) {
        super(ALLOW_EVENTS);
        eventType = m;
    }

    /**
     * Sets the eventType defined in this AllowEventsHeader.
     *
     * @param eventType - the String defining the method supported
     * in this AllowEventsHeader
     * @throws ParseException which signals that an error has been reached
     * unexpectedly while parsing the Strings defining the eventType supported
     */
    public void setEventType(String eventType) throws ParseException {
        if (eventType == null)
            throw new NullPointerException(
                "JAIN-SIP Exception,"
                    + "AllowEvents, setEventType(), the eventType parameter is null");
        this.eventType = eventType;
    }

    /**
     * Gets the eventType of the AllowEventsHeader.
     *
     * @return the String object identifing the eventTypes of AllowEventsHeader.
     */
    public String getEventType() {
        return eventType;
    }

    /** Return body encoded in canonical form.
        * @return body encoded as a string.
        */
    @Override
    protected StringBuilder encodeBody(StringBuilder buffer) {
        return buffer.append(eventType);
    }
}