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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   * Allows the admin to enable, disable and uninstall course formats
  19   *
  20   * @package    core_admin
  21   * @copyright  2012 Marina Glancy
  22   * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  23   */
  24  
  25  require_once('../config.php');
  26  require_once($CFG->libdir.'/adminlib.php');
  27  
  28  $action  = required_param('action', PARAM_ALPHANUMEXT);
  29  $formatname   = required_param('format', PARAM_PLUGIN);
  30  
  31  $syscontext = context_system::instance();
  32  $PAGE->set_url('/admin/courseformats.php');
  33  $PAGE->set_context($syscontext);
  34  
  35  require_login();
  36  require_capability('moodle/site:config', $syscontext);
  37  require_sesskey();
  38  
  39  $return = new moodle_url('/admin/settings.php', array('section' => 'manageformats'));
  40  
  41  $formatplugins = core_plugin_manager::instance()->get_plugins_of_type('format');
  42  $sortorder = array_flip(array_keys($formatplugins));
  43  
  44  if (!isset($formatplugins[$formatname])) {
  45      print_error('courseformatnotfound', 'error', $return, $formatname);
  46  }
  47  
  48  switch ($action) {
  49      case 'disable':
  50          if ($formatplugins[$formatname]->is_enabled()) {
  51              if (get_config('moodlecourse', 'format') === $formatname) {
  52                  print_error('cannotdisableformat', 'error', $return);
  53              }
  54              set_config('disabled', 1, 'format_'. $formatname);
  55              core_plugin_manager::reset_caches();
  56          }
  57          break;
  58      case 'enable':
  59          if (!$formatplugins[$formatname]->is_enabled()) {
  60              unset_config('disabled', 'format_'. $formatname);
  61              core_plugin_manager::reset_caches();
  62          }
  63          break;
  64      case 'up':
  65          if ($sortorder[$formatname]) {
  66              $currentindex = $sortorder[$formatname];
  67              $seq = array_keys($formatplugins);
  68              $seq[$currentindex] = $seq[$currentindex-1];
  69              $seq[$currentindex-1] = $formatname;
  70              set_config('format_plugins_sortorder', implode(',', $seq));
  71          }
  72          break;
  73      case 'down':
  74          if ($sortorder[$formatname] < count($sortorder)-1) {
  75              $currentindex = $sortorder[$formatname];
  76              $seq = array_keys($formatplugins);
  77              $seq[$currentindex] = $seq[$currentindex+1];
  78              $seq[$currentindex+1] = $formatname;
  79              set_config('format_plugins_sortorder', implode(',', $seq));
  80          }
  81          break;
  82  }
  83  redirect($return);