/*
* 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.util.*;
import java.text.ParseException;
import javax.sip.header.*;

/**
 * List of ALLOW headers. The sip message can have multiple Allow headers
 *
 * @author M. Ranganathan  <br/>
 * @version 1.2 $Revision: 1.7 $ $Date: 2009-07-17 18:57:26 $
 * @since 1.1
 *
 */
public class AllowList extends SIPHeaderList<Allow> {


    /**
     * Comment for <code>serialVersionUID</code>
     */
    private static final long serialVersionUID = -4699795429662562358L;


    public Object clone() {
        AllowList retval = new AllowList();
        retval.clonehlist(this.hlist);
        return retval;
    }


    /** default constructor
     */
    public AllowList() {
        super(Allow.class, AllowHeader.NAME);
    }

    /**
     * Gets an Iterator of all the methods of the AllowHeader. Returns an empty
     *
     * Iterator if no methods are defined in this Allow Header.
     *
     *
     *
     * @return Iterator of String objects each identifing the methods of
     *
     * AllowHeader.
     *
     *
     */
    public ListIterator<String> getMethods() {

        LinkedList<String> ll = new LinkedList<String> ();

        for ( Iterator<Allow> it = this.hlist.iterator(); it.hasNext();) {
            Allow a = (Allow)it.next();
            ll.add(a.getMethod());
        }

        return ll.listIterator();
    }

    /**
     * Sets the methods supported defined by this AllowHeader.
     *
     *
     *
     * @param methods - the Iterator of Strings defining the methods supported
     *
     * in this AllowHeader
     *
     * @throws ParseException which signals that an error has been reached
     *
     * unexpectedly while parsing the Strings defining the methods supported.
     *
     *
     */
    public void setMethods(List<String> methods) throws ParseException {
        ListIterator<String> it = methods.listIterator();
        while (it.hasNext()) {
            Allow allow = new Allow();
            allow.setMethod((String) it.next());
            this.add(allow);
        }
    }
}