mod/chat/gui_header_js/users.php

   1 <?php  // $Id$
   2
   3     $nomoodlecookie = true;     // Session not needed!
   4
   5     include('../../../config.php');
   6     include('../lib.php');
   7
   8     $chat_sid   = required_param('chat_sid', PARAM_ALPHANUM);
   9     $beep       = optional_param('beep', 0, PARAM_INT);  // beep target
  10
  11     if (!$chatuser = get_record('chat_users', 'sid', $chat_sid)) {
  12         error('Not logged in!');
  13     }
  14
  15     //Get the minimal course
  16     if (!$course = get_record('course','id',$chatuser->course,'','','','','id,theme,lang')) {
  17         error('incorrect course id');
  18     }
  19
  20     //Get the user theme and enough info to be used in chat_format_message() which passes it along to
  21     if (!$USER = get_record('user','id',$chatuser->userid,'','','','','id, lang, theme, username, timezone')) {
  22         error('User does not exist!');
  23     }
  24     $USER->description = '';
  25
  26     //Setup course, lang and theme
  27     course_setup($course);
  28
  29     $courseid = $chatuser->course;
  30
  31     if (!$cm = get_coursemodule_from_instance('chat', $chatuser->chatid, $courseid)) {
  32         error('Course Module ID was incorrect');
  33     }
  34
  35     if ($beep) {
  36         $message->chatid    = $chatuser->chatid;
  37         $message->userid    = $chatuser->userid;
  38         $message->groupid   = $chatuser->groupid;
  39         $message->message   = "beep $beep";
  40         $message->system    = 0;
  41         $message->timestamp = time();
  42
  43         if (!insert_record('chat_messages', $message)) {
  44             error('Could not insert a chat message!');
  45         }
  46
  47         $chatuser->lastmessageping = time();          // A beep is a ping  ;-)
  48     }
  49
  50     $chatuser->lastping = time();
  51     set_field('chat_users', 'lastping', $chatuser->lastping, 'id', $chatuser->id  );
  52
  53     $refreshurl = "users.php?chat_sid=$chat_sid";
  54
  55     /// Get list of users
  56
  57     if (!$chatusers = chat_get_users($chatuser->chatid, $chatuser->groupid, $cm->groupingid)) {
  58         error(get_string('errornousers', 'chat'));
  59     }
  60
  61     ob_start();
  62     ?>
  63     <script type="text/javascript">
  64     //<![CDATA[
  65     var timer = null
  66     var f = 1; //seconds
  67     var uidles = new Array(<?php echo count($chatusers) ?>);
  68     <?php
  69         $i = 0;
  70         foreach ($chatusers as $chatuser) {
  71             echo "uidles[$i] = 'uidle{$chatuser->id}';\n";
  72             $i++;
  73         }
  74     ?>
  75
  76     function stop() {
  77         clearTimeout(timer)
  78     }
  79
  80     function start() {
  81         timer = setTimeout("update()", f*1000);
  82     }
  83
  84     function update() {
  85         for(i=0; i<uidles.length; i++) {
  86             el = document.getElementById(uidles[i]);
  87             if (el != null) {
  88                 parts = el.innerHTML.split(":");
  89                 time = f + (parseInt(parts[0], 10)*60) + parseInt(parts[1], 10);
  90                 min = Math.floor(time/60);
  91                 sec = time % 60;
  92                 el.innerHTML = ((min < 10) ? "0" : "") + min + ":" + ((sec < 10) ? "0" : "") + sec;
  93             }
  94         }
  95         timer = setTimeout("update()", f*1000);
  96     }
  97     //]]>
  98     </script>
  99     <?php
 100
 101
 102     /// Print headers
 103     $meta = ob_get_clean();
 104
 105
 106     // Use ob to support Keep-Alive
 107     ob_start();
 108     print_header('', '', '', '', $meta, false, '', '', false, 'onload="start()" onunload="stop()"');
 109
 110
 111     /// Print user panel body
 112     $timenow    = time();
 113     $stridle    = get_string('idle', 'chat');
 114     $strbeep    = get_string('beep', 'chat');
 115
 116
 117     echo '<div style="display: none"><a href="'.$refreshurl.'" name="refreshLink">Refresh link</a></div>';
 118     echo '<table width="100%">';
 119     foreach ($chatusers as $chatuser) {
 120         $lastping = $timenow - $chatuser->lastmessageping;
 121         $min = (int) ($lastping/60);
 122         $sec = $lastping - ($min*60);
 123         $min = $min < 10 ? '0'.$min : $min;
 124         $sec = $sec < 10 ? '0'.$sec : $sec;
 125         $idle = $min.':'.$sec;
 126         echo '<tr><td width="35">';
 127         echo "<a target=\"_blank\" onClick=\"return openpopup('/user/view.php?id=$chatuser->id&amp;course=$courseid','user$chatuser->id','');\" href=\"$CFG->wwwroot/user/view.php?id=$chatuser->id&amp;course=$courseid\">";
 128         print_user_picture($chatuser->id, 0, $chatuser->picture, false, false, false);
 129         echo '</a></td><td valign="center">';
 130         echo '<p><font size="1">';
 131         echo fullname($chatuser).'<br />';
 132         echo "<span class=\"dimmed_text\">$stridle <span name=\"uidles\" id=\"uidle{$chatuser->id}\">$idle</span></span>";
 133         echo " <a href=\"users.php?chat_sid=$chat_sid&amp;beep=$chatuser->id\">$strbeep</a>";
 134         echo '</font></p>';
 135         echo '</td></tr>';
 136     }
 137     // added 2 </div>s, xhtml strict complaints
 138     echo '</table></div></div></body></html>';
 139
 140     //
 141     // Support HTTP Keep-Alive by printing Content-Length
 142     //
 143     // If the user pane is refreshing often, using keepalives
 144     // is lighter on the server and faster for most clients.
 145     //
 146     // Apache is normally configured to have a 15s timeout on
 147     // keepalives, so let's observe that. Unfortunately, we cannot
 148     // autodetect the keepalive timeout.
 149     //
 150     // Using keepalives when the refresh is longer than the timeout
 151     // wastes server resources keeping an apache child around on a
 152     // connection that will timeout. So we don't.
 153     if ($CFG->chat_refresh_userlist < 15) {
 154         header("Content-Length: " . ob_get_length() );
 155         ob_end_flush();
 156     }
 157
 158     exit; // no further output
 159
 160
 161 ?>