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<?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/>.
/**
* Online users block.
*
* @package block_online_users
* @copyright 1999 onwards Martin Dougiamas (http://dougiamas.com)
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
use block_online_users\fetcher;
/**
* This block needs to be reworked.
* The new roles system does away with the concepts of rigid student and
* teacher roles.
*/
class block_online_users extends block_base {
function init() {
$this->title = get_string('pluginname','block_online_users');
}
function has_config() {
return true;
}
function get_content() {
global $USER, $CFG, $DB, $OUTPUT;
if ($this->content !== NULL) {
return $this->content;
}
$this->content = new stdClass;
$this->content->text = '';
$this->content->footer = '';
if (empty($this->instance)) {
return $this->content;
}
$timetoshowusers = 300; //Seconds default
if (isset($CFG->block_online_users_timetosee)) {
$timetoshowusers = $CFG->block_online_users_timetosee * 60;
}
$now = time();
//Calculate if we are in separate groups
$isseparategroups = ($this->page->course->groupmode == SEPARATEGROUPS
&& $this->page->course->groupmodeforce
&& !has_capability('moodle/site:accessallgroups', $this->page->context));
//Get the user current group
$currentgroup = $isseparategroups ? groups_get_course_group($this->page->course) : NULL;
$sitelevel = $this->page->course->id == SITEID || $this->page->context->contextlevel < CONTEXT_COURSE;
$onlineusers = new fetcher($currentgroup, $now, $timetoshowusers, $this->page->context,
$sitelevel, $this->page->course->id);
//Calculate minutes
$minutes = floor($timetoshowusers/60);
$periodminutes = get_string('periodnminutes', 'block_online_users', $minutes);
// Count users.
$usercount = $onlineusers->count_users();
if ($usercount === 0) {
$usercount = get_string('nouser', 'block_online_users');
} else if ($usercount === 1) {
$usercount = get_string('numuser', 'block_online_users', $usercount);
} else {
$usercount = get_string('numusers', 'block_online_users', $usercount);
}
$this->content->text = '<div class="info">'.$usercount.' ('.$periodminutes.')</div>';
// Verify if we can see the list of users, if not just print number of users
if (!has_capability('block/online_users:viewlist', $this->page->context)) {
return $this->content;
}
$userlimit = 50; // We'll just take the most recent 50 maximum.
if ($users = $onlineusers->get_users($userlimit)) {
foreach ($users as $user) {
$users[$user->id]->fullname = fullname($user);
}
} else {
$users = array();
}
//Now, we have in users, the list of users to show
//Because they are online
if (!empty($users)) {
$this->page->requires->js_call_amd('block_online_users/change_user_visibility', 'init');
//Accessibility: Don't want 'Alt' text for the user picture; DO want it for the envelope/message link (existing lang string).
//Accessibility: Converted <div> to <ul>, inherit existing classes & styles.
$this->content->text .= "<ul class='list'>\n";
if (isloggedin() && has_capability('moodle/site:sendmessage', $this->page->context)
&& !empty($CFG->messaging) && !isguestuser()) {
$canshowicon = true;
} else {
$canshowicon = false;
}
foreach ($users as $user) {
$this->content->text .= '<li class="listentry">';
$timeago = format_time($now - $user->lastaccess); //bruno to calculate correctly on frontpage
if (isguestuser($user)) {
$this->content->text .= '<div class="user">'.$OUTPUT->user_picture($user, array('size'=>16, 'alttext'=>false));
$this->content->text .= get_string('guestuser').'</div>';
} else { // Not a guest user.
$this->content->text .= '<div class="user">';
$this->content->text .= '<a href="'.$CFG->wwwroot.'/user/view.php?id='.$user->id.'&course='.$this->page->course->id.'" title="'.$timeago.'">';
$this->content->text .= $OUTPUT->user_picture($user, array('size'=>16, 'alttext'=>false, 'link'=>false)) .$user->fullname.'</a></div>';
if ($USER->id == $user->id) {
if ($CFG->block_online_users_onlinestatushiding) {
$action = ($user->uservisibility != null && $user->uservisibility == 0) ? 'show' : 'hide';
$anchortagcontents = $OUTPUT->pix_icon('t/' . $action,
get_string('online_status:' . $action, 'block_online_users'));
$anchortag = html_writer::link("", $anchortagcontents,
array('title' => get_string('online_status:' . $action, 'block_online_users'),
'data-action' => $action, 'data-userid' => $user->id, 'id' => 'change-user-visibility'));
$this->content->text .= '<div class="uservisibility">' . $anchortag . '</div>';
}
} else {
if ($canshowicon) { // Only when logged in and messaging active etc.
$anchortagcontents = $OUTPUT->pix_icon('t/message', get_string('messageselectadd'));
$anchorurl = new moodle_url('/message/index.php', array('id' => $user->id));
$anchortag = html_writer::link($anchorurl, $anchortagcontents,
array('title' => get_string('messageselectadd')));
$this->content->text .= '<div class="message">'.$anchortag.'</div>';
}
}
}
$this->content->text .= "</li>\n";
}
$this->content->text .= '</ul><div class="clearer"><!-- --></div>';
}
return $this->content;
}
/**
* Return the plugin config settings for external functions.
*
* @return stdClass the configs for both the block instance and plugin
* @since Moodle 3.8
*/
public function get_config_for_external() {
global $CFG;
// Return all settings for all users since it is safe (no private keys, etc..).
$configs = (object) [
'timetosee' => $CFG->block_online_users_timetosee,
'onlinestatushiding' => $CFG->block_online_users_onlinestatushiding
];
return (object) [
'instance' => new stdClass(),
'plugin' => $configs,
];
}
}