1<?php
2// This file is part of Moodle - http://moodle.org/
3//
4// Moodle is free software: you can redistribute it and/or modify
5// it under the terms of the GNU General Public License as published by
6// the Free Software Foundation, either version 3 of the License, or
7// (at your option) any later version.
8//
9// Moodle is distributed in the hope that it will be useful,
10// but WITHOUT ANY WARRANTY; without even the implied warranty of
11// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
12// GNU General Public License for more details.
13//
14// You should have received a copy of the GNU General Public License
15// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
16
17require_once('../../../config.php');
18require_once('../lib.php');
19
20$id      = required_param('id', PARAM_INT);
21$groupid = optional_param('groupid', 0, PARAM_INT); // Only for teachers.
22
23$url = new moodle_url('/mod/chat/gui_header_js/index.php', array('id' => $id));
24if ($groupid !== 0) {
25    $url->param('groupid', $groupid);
26}
27$PAGE->set_url($url);
28
29if (!$chat = $DB->get_record('chat', array('id' => $id))) {
30    print_error('invalidid', 'chat');
31}
32
33if (!$course = $DB->get_record('course', array('id' => $chat->course))) {
34    print_error('invalidcourseid');
35}
36
37if (!$cm = get_coursemodule_from_instance('chat', $chat->id, $course->id)) {
38    print_error('invalidcoursemodule');
39}
40
41$context = context_module::instance($cm->id);
42
43require_login($course, false, $cm);
44
45require_capability('mod/chat:chat', $context);
46
47// Check to see if groups are being used here.
48if ($groupmode = groups_get_activity_groupmode($cm)) {   // Groups are being used.
49    if ($groupid = groups_get_activity_group($cm)) {
50        if (!$group = groups_get_group($groupid)) {
51            print_error('invalidgroupid');
52        }
53        $groupname = ': '.$group->name;
54    } else {
55        $groupname = ': '.get_string('allparticipants');
56    }
57} else {
58    $groupid = 0;
59    $groupname = '';
60}
61
62$strchat = get_string('modulename', 'chat'); // Must be before current_language() in chat_login_user() to force course language!
63
64if (!$chatsid = chat_login_user($chat->id, 'header_js', $groupid, $course)) {
65    print_error('cantlogin', 'chat');
66}
67
68$params = "chat_id=$id&chat_sid={$chatsid}";
69
70// Fallback to the old jsupdate, but allow other update modes.
71$updatemode = 'jsupdate';
72if (!empty($CFG->chat_normal_updatemode)) {
73    $updatemode = $CFG->chat_normal_updatemode;
74}
75
76$courseshortname = format_string($course->shortname, true, array('context' => context_course::instance($course->id)));
77?>
78
79<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Frameset//EN" "http://www.w3.org/TR/html4/frameset.dtd">
80<html>
81 <head>
82  <meta http-equiv="content-type" content="text/html; charset=utf-8" />
83  <title>
84   <?php echo "$strchat: " . $courseshortname . ": ".
85              format_string($chat->name, true, array('context' => $context)) . "$groupname" ?>
86  </title>
87 </head>
88 <frameset cols="*,200" border="5" framespacing="no" frameborder="yes" marginwidth="2" marginheight="1">
89  <frameset rows="0,0,*,50" border="0" framespacing="no" frameborder="no" marginwidth="2" marginheight="1">
90   <frame src="../empty.php" name="empty" scrolling="no" marginwidth="0" marginheight="0">
91   <frame src="<?php echo $updatemode ?>.php?<?php echo $params ?>" name="jsupdate" scrolling="no" marginwidth="0" marginheight="0">
92   <frame src="chatmsg.php?<?php echo $params ?>" name="msg" scrolling="auto" marginwidth="2" marginheight="1">
93   <frame src="chatinput.php?<?php echo $params ?>" name="input" scrolling="no" marginwidth="2" marginheight="1">
94  </frameset>
95  <frame src="users.php?<?php echo $params ?>" name="users" scrolling="auto" marginwidth="5" marginheight="5">
96 </frameset>
97 <noframes>
98  Sorry, this version of Moodle Chat needs a browser that handles frames.
99 </noframes>
100</html>
101