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   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  
  17  /**
  18   * Contains functions called by core.
  19   *
  20   * @package    block_online_users
  21   * @copyright  2018 Mihail Geshoski <mihail@moodle.com>
  22   * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  23   */
  24  
  25  defined('MOODLE_INTERNAL') || die();
  26  
  27  /**
  28   * Callback to define user preferences.
  29   *
  30   * @return array
  31   */
  32  function block_online_users_user_preferences() {
  33      $preferences = array();
  34      $preferences['block_online_users_uservisibility'] = array(
  35          'type' => PARAM_INT,
  36          'null' => NULL_NOT_ALLOWED,
  37          'default' => 1,
  38          'choices' => array(0, 1),
  39          'permissioncallback' => function($user, $preferencename) {
  40              global $USER;
  41              return $user->id == $USER->id;
  42          }
  43      );
  44  
  45      return $preferences;
  46  }