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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   * Defines classes used for plugin info.
  19   *
  20   * @package    core
  21   * @copyright  2011 David Mudrak <david@moodle.com>
  22   * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  23   */
  24  namespace core\plugininfo;
  25  
  26  use core_component, core_plugin_manager, moodle_url, coding_exception;
  27  
  28  defined('MOODLE_INTERNAL') || die();
  29  
  30  /**
  31   * Class for portfolios
  32   */
  33  class portfolio extends base {
  34      /**
  35       * Finds all enabled plugins, the result may include missing plugins.
  36       * @return array|null of enabled plugins $pluginname=>$pluginname, null means unknown
  37       */
  38      public static function get_enabled_plugins() {
  39          global $DB;
  40  
  41          $enabled = array();
  42          $rs = $DB->get_recordset('portfolio_instance', array('visible'=>1), 'plugin ASC', 'plugin');
  43          foreach ($rs as $repository) {
  44              $enabled[$repository->plugin] = $repository->plugin;
  45          }
  46  
  47          return $enabled;
  48      }
  49  
  50      /**
  51       * Return URL used for management of plugins of this type.
  52       * @return moodle_url
  53       */
  54      public static function get_manage_url() {
  55          return new moodle_url('/admin/portfolio.php');
  56      }
  57  
  58      /**
  59       * Defines if there should be a way to uninstall the plugin via the administration UI.
  60       * @return boolean
  61       */
  62      public function is_uninstall_allowed() {
  63          return true;
  64      }
  65  
  66      /**
  67       * Pre-uninstall hook.
  68       * This is intended for disabling of plugin, some DB table purging, etc.
  69       */
  70      public function uninstall_cleanup() {
  71          global $DB;
  72  
  73          // Get all instances of this portfolio.
  74          $count = $DB->count_records('portfolio_instance', array('plugin' => $this->name));
  75          if ($count > 0) {
  76              // This portfolio is in use, get the it's ID.
  77              $rec = $DB->get_record('portfolio_instance', array('plugin' => $this->name));
  78  
  79              // Remove all records from portfolio_instance_config.
  80              $DB->delete_records('portfolio_instance_config', array('instance' => $rec->id));
  81              // Remove all records from portfolio_instance_user.
  82              $DB->delete_records('portfolio_instance_user', array('instance' => $rec->id));
  83              // Remove all records from portfolio_log.
  84              $DB->delete_records('portfolio_log', array('portfolio' => $rec->id));
  85              // Remove all records from portfolio_tempdata.
  86              $DB->delete_records('portfolio_tempdata', array('instance' => $rec->id));
  87  
  88              // Remove the record from the portfolio_instance table.
  89              $DB->delete_records('portfolio_instance', array('id' => $rec->id));
  90          }
  91  
  92          parent::uninstall_cleanup();
  93      }
  94  }