XEP0085 chat states

[danschultzer]

Here's a script to enable chat states (XEP0085). You can get the chat state by calling $chatState = XEP_0085::get_chat_state($stanza);

I used the other XEP as base.

<?php
/**
 * Jaxl (Jabber XMPP Library)
 *
 * Copyright (c) 2009-2012, Abhinav Singh <me@abhinavsingh.com>.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
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 *
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 * notice, this list of conditions and the following disclaimer in
 * the documentation and/or other materials provided with the
 * distribution.
 *
 * * Neither the name of Abhinav Singh nor the names of his
 * contributors may be used to endorse or promote products derived
 * from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRIC
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require_once JAXL_CWD.'/xmpp/xmpp_xep.php';

define('NS_CHATSTATES', 'http://jabber.org/protocol/chatstates');

class XEP_0085 extends XMPPXep {

    public static $chatStates = array('composing', 'active', 'inactive', 'paused', 'gone');

    //
    // abstract method
    //

    public function init() {
        return array(
        );
    }

    public static function get_chat_state($stanza)
    {
        $chat_state = false;
        foreach ($stanza->childrens as $child)
        {
            if ($child->ns == NS_CHATSTATES)
            {
                foreach(self::$chatStates as $state) {
                    if($child->name == $state) {
                        $chat_state = $state;
                    }
                }
            }
        }
        return $chat_state;
    }

}

?>