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Developer Documentation

See Release Notes
Long Term Support Release

  • Bug fixes for general core bugs in 4.1.x will end 13 November 2023 (12 months).
  • Bug fixes for security issues in 4.1.x will end 10 November 2025 (36 months).
  • PHP version: minimum PHP 7.4.0 Note: minimum PHP version has increased since Moodle 4.0. PHP 8.0.x is supported too.
<?php
// This file is part of Moodle - http://moodle.org/
//
// Moodle is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// Moodle is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.

require_once('../../../config.php');
require_once('../lib.php');

$id      = required_param('id', PARAM_INT);
$groupid = optional_param('groupid', 0, PARAM_INT); // Only for teachers.
$theme   = optional_param('chat_theme', 'course_theme', PARAM_SAFEDIR); // The value course_theme == the current theme.

$url = new moodle_url('/mod/chat/gui_ajax/index.php', array('id' => $id));
if ($groupid !== 0) {
    $url->param('groupid', $groupid);
}
$PAGE->set_url($url);
$PAGE->set_popup_notification_allowed(false); // No popup notifications in the chat window.
$PAGE->requires->strings_for_js(array('coursetheme', 'bubble', 'compact'), 'mod_chat');

$chat = $DB->get_record('chat', array('id' => $id), '*', MUST_EXIST);
$course = $DB->get_record('course', array('id' => $chat->course), '*', MUST_EXIST);
$cm = get_coursemodule_from_instance('chat', $chat->id, $course->id, false, MUST_EXIST);

$context = context_module::instance($cm->id);
require_login($course, false, $cm);
require_capability('mod/chat:chat', $context);

// Check to see if groups are being used here.
if ($groupmode = groups_get_activity_groupmode($cm)) {   // Groups are being used.
    if ($groupid = groups_get_activity_group($cm)) {
        if (!$group = groups_get_group($groupid)) {
< print_error('invalidgroupid');
> throw new \moodle_exception('invalidgroupid');
} $groupname = ': '.$group->name; } else { $groupname = ': '.get_string('allparticipants'); } } else { $groupid = 0; $groupname = ''; } // If requested theme doesn't exist, use default 'bubble' theme. if ($theme != 'course_theme' and !file_exists(__DIR__ . '/theme/'.$theme.'/chat.css')) { $theme = 'compact'; } // Log into the chat room. if (!$chatsid = chat_login_user($chat->id, 'ajax', $groupid, $course)) {
< print_error('cantlogin', 'chat');
> throw new \moodle_exception('cantlogin', 'chat');
} $courseshortname = format_string($course->shortname, true, array('context' => context_course::instance($course->id))); $module = array( 'name' => 'mod_chat_ajax', // Chat gui's are not real plugins, we have to break the naming standards for JS modules here. 'fullpath' => '/mod/chat/gui_ajax/module.js', 'requires' => array('base', 'dom', 'event', 'event-mouseenter', 'event-key', 'json-parse', 'io', 'overlay', 'yui2-resize', 'yui2-layout', 'yui2-menu'), 'strings' => array(array('send', 'chat'), array('sending', 'chat'), array('inputarea', 'chat'), array('userlist', 'chat'), array('modulename', 'chat'), array('beep', 'chat'), array('talk', 'chat')) ); $modulecfg = array( 'home' => $CFG->wwwroot.'/mod/chat/view.php?id='.$cm->id, 'chaturl' => $CFG->wwwroot.'/mod/chat/gui_ajax/index.php?id='.$id, 'theme' => $theme, 'userid' => $USER->id, 'sid' => $chatsid, 'timer' => 3000, 'chat_lasttime' => 0, 'chat_lastrow' => null, 'chatroom_name' => $courseshortname . ": " . format_string($chat->name, true) . $groupname ); $PAGE->requires->js_init_call('M.mod_chat_ajax.init', array($modulecfg), false, $module); $PAGE->set_title(get_string('modulename', 'chat').": $courseshortname: ".format_string($chat->name, true)."$groupname"); $PAGE->add_body_class('yui-skin-sam'); $PAGE->activityheader->disable(); $PAGE->set_pagelayout('embedded'); if ( $theme != 'course_theme') { $PAGE->requires->css('/mod/chat/gui_ajax/theme/'.$theme.'/chat.css'); } echo $OUTPUT->header(); echo $OUTPUT->box(html_writer::tag('h2', get_string('participants'), array('class' => 'accesshide')) . '<ul id="users-list" class="list-group"></ul>', '', 'chat-userlist'); echo $OUTPUT->box('', '', 'chat-options'); echo $OUTPUT->box(html_writer::tag('h2', get_string('messages', 'chat'), array('class' => 'accesshide')) . '<ul id="messages-list"></ul>', '', 'chat-messages'); $table = new html_table(); $table->data = array( array('<div class="form-inline"><div class="d-flex"><label class="accesshide" for="input-message">'. get_string('entermessage', 'chat').' </label>'. '<span class="form-group"><input type="text" disabled="true" class="form-control" ' . 'id="input-message" value="Loading..." size="48" /></span>'. '<span class="form-group"><input type="button" id="button-send" class="btn btn-secondary mx-1" ' . 'value="'.get_string('send', 'chat').'" />' .$OUTPUT->help_icon('usingchat', 'chat'). '</span></div>' . ' <div class="form-group d-flex ml-auto"><a id="choosetheme" href="###">'. get_string('themes'). ' &raquo; </a></div></div>')); echo $OUTPUT->box(html_writer::tag('h2', get_string('composemessage', 'chat'), array('class' => 'accesshide')) . html_writer::table($table), '', 'chat-input-area'); echo $OUTPUT->box('', '', 'chat-notify'); echo $OUTPUT->footer();