function get_content()
{
if (!empty($this->content->text)) {
return;
}
$this->content = new stdClass();
$this->content->footer = '';
// Get course object
global $USER, $CFG, $COURSE;
if ($this->instance->pageid == $COURSE->id) {
$course = $COURSE;
} else {
$course = get_record('course', 'id', $this->instance->pageid);
}
// Check access
$context = get_context_instance(CONTEXT_COURSE, $course->id);
if (!has_capability('block/hawthorn:chat', $context)) {
// Don't show block at all
return;
}
// Get name and message options
$maxmessages = isset($this->config->maxmessages) ? $this->config->maxmessages : HAWTHORN_DEFAULTMESSAGES;
$maxnames = isset($this->config->maxnames) ? $this->config->maxnames : HAWTHORN_DEFAULTNAMES;
// Ridiculously short sessions are going to cause problems.
if ($CFG->sessiontimeout < 10 * 60) {
$this->content->text = get_string('error_sessions', 'block_hawthorn');
return;
}
// Load Hawthorn library.
require_once $CFG->dirroot . '/blocks/hawthorn/hawthornlib.php';
// Initialise
$hawthorn = get_hawthorn($course);
// Check group mode
$mode = isset($this->config->mode) ? $this->config->mode : HAWTHORN_DEFAULTMODE;
// Check whether to show course part
$coursepart = $mode == 'course' || $mode == 'both';
// Check whether to show group part
$grouppart = false;
if ($mode == 'group' || $mode == 'both') {
// Note: The below code cannot use standard Moodle groups functions
// because these include the concept of viewing 'all groups', which
// you can't do with Hawthorn. Also we don't support visible groups
// (at the moment).
// Find out which group(s) the current user can access
$grouping = isset($this->config->grouping) ? $this->config->grouping : 0;
$groupuser = $USER->id;
$mygroups = groups_get_all_groups($COURSE->id, $USER->id, $grouping);
$mygroups = $mygroups ? $mygroups : array();
if (has_capability('moodle/site:accessallgroups', $context)) {
$groups = groups_get_all_groups($COURSE->id, 0, $grouping);
$groups = $groups ? $groups : array();
} else {
$groups = $mygroups;
}
// Any groups at all?
$grouppart = count($groups) > 0;
}
// Build display output
$this->content->text = '';
$headinglevel = $grouppart && $coursepart ? 4 : 3;
// Course part
$coursechunk = '';
if ($coursepart) {
// Course chat heading shown only if there are both options
if ($grouppart) {
$this->content->text .= '<h3>' . get_string('courseheading', 'block_hawthorn') . '</h3>';
}
// Actual course channel content
$channel = 'c' . $COURSE->id;
$this->content->text .= $hawthorn->linkToChat($channel, get_string('coursechat', 'block_hawthorn', format_string($COURSE->shortname)), get_string('coursechatlink', 'block_hawthorn', format_string($COURSE->shortname)));
if ($maxmessages > 0 || $maxnames > 0) {
$this->content->text .= $hawthorn->recent($channel, $maxmessages, 900000, $maxnames, $headinglevel, get_string('recent', 'block_hawthorn'), get_string('names', 'block_hawthorn'), get_string('loading', 'block_hawthorn'), get_string('noscript', 'block_hawthorn'));
}
}
if ($grouppart) {
// Group chat heading shown only if there are both options
if ($coursepart) {
$this->content->text .= '<h3 class="hawthorn_secondheading">' . get_string('groupheading', 'block_hawthorn') . '</h3>';
}
// Find selected group
$selectedgroup = 0;
if (isset($SESSION->block_hawthorn_group) && array_key_exists($COURSE->id, $SESSION->block_hawthorn_group)) {
$selectedgroup = $SESSION->block_hawthorn_group[$COURSE->id];
}
if ($change = optional_param('hawthorngroup', 0, PARAM_INT)) {
$selectedgroup = $change;
$SESSION->block_hawthorn_group[$COURSE->id] = $selectedgroup;
}
if (!array_key_exists($selectedgroup, $groups)) {
// Not allowed to select groups that don't exist
$selectedgroup = 0;
}
if (!$selectedgroup) {
if (count($mygroups) > 0) {
reset($mygroups);
$selectedgroup = key($mygroups);
} else {
reset($groups);
$selectedgroup = key($groups);
}
}
// Group selector
if (count($groups) > 1) {
foreach ($groups as $group) {
$groupsmenu[$group->id] = format_string($group->name);
}
$this->content->text .= popup_form($CFG->wwwroot . '/course/view.php?id=' . $COURSE->id . '&hawthorngroup=', $groupsmenu, 'hawthorngroupselector', $selectedgroup, '', '', '', true);
}
// Actual link to chat and recent messages
$channel = 'c' . $COURSE->id . 'g' . $selectedgroup;
$this->content->text .= $hawthorn->linkToChat($channel, get_string('groupchat', 'block_hawthorn', (object) array('course' => format_string($COURSE->shortname), 'group' => format_string($groups[$selectedgroup]->name))), get_string('groupchatlink', 'block_hawthorn', format_string($groups[$selectedgroup]->name)));
if ($maxmessages > 0 || $maxnames > 0) {
$this->content->text .= $hawthorn->recent($channel, $maxmessages, 900000, $maxnames, $headinglevel, get_string('recent', 'block_hawthorn'), get_string('names', 'block_hawthorn'), get_string('loading', 'block_hawthorn'), get_string('noscript', 'block_hawthorn'));
}
}
// If logo is enabled, display it
if ($CFG->block_hawthorn_logo) {
$this->content->text .= '<div class="hawthorn_logo"><img src="' . $CFG->wwwroot . '/blocks/hawthorn/hawthorn.small.png" alt="' . get_string('poweredby', 'block_hawthorn') . '" title="' . get_string('poweredby', 'block_hawthorn') . '" /></div>';
}
}
$requestid = optional_param('id', '', PARAM_RAW);
if (!preg_match('~^[0-9]{1,18}$~', $requestid)) {
print_error('error_invalid', 'block_hawthorn');
}
// Get course ID
if ($type == 'c') {
$courseid = $id;
} else {
$courseid = get_field('groups', 'courseid', 'id', $id);
}
// Note: Calling the below 'require' functions is sort of bad practice because
// they will print HTML and exit, rather than sending the Hawthorn deny-access
// JavaScript. However, it's easier to do things this way in Moodle, and
// Hawthorn will still display an error to users if the key expires.
// Require course login
require_login($courseid);
$context = get_context_instance(CONTEXT_COURSE, $courseid);
// Require group access
if ($type == 'g') {
$ismember = count_records('groups_members', 'groupid', $id, 'userid', $USER->id) == 1;
if (!$ismember) {
if ($COURSE->groupmode != VISIBLEGROUPS) {
require_capability('moodle/site:accessallgroups', $context);
}
}
}
// OK, access was permitted.
// Initialise Hawthorn
$hawthorn = get_hawthorn();
// Allow access
$hawthorn->reAcquireAllow($requestid, $channel);
<?php
require_once $CFG->dirroot . '/blocks/hawthorn/hawthornlib.php';
$settings->add(new admin_setting_configtext('block_hawthorn_magicnumber', get_string('magicnumber', 'block_hawthorn'), get_string('configmagicnumber', 'block_hawthorn'), '', PARAM_TEXT));
$settings->add(new admin_setting_configtext('block_hawthorn_servers', get_string('servers', 'block_hawthorn'), get_string('configservers', 'block_hawthorn'), '', PARAM_TEXT));
$settings->add(new admin_setting_configcheckbox('block_hawthorn_logo', get_string('logo', 'block_hawthorn'), get_string('configlogo', 'block_hawthorn'), 1));
$sitecourse = (object) array('id' => SITEID);
$hawthorn = get_hawthorn($sitecourse);
$settings->add(new admin_setting_heading('hawthorn_statslink', get_string('statisticsheading', 'block_hawthorn'), $hawthorn->linkToStatistics()));
