question/type/description/questiontype.php

   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  * Question type class for the description 'question' type.
  19  *
  20  * @package    qtype
  21  * @subpackage description
  22  * @copyright  1999 onwards Martin Dougiamas  {@link http://moodle.com}
  23  * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  24  */
  25
  26
  27 defined('MOODLE_INTERNAL') || die();
  28
  29 require_once($CFG->libdir . '/questionlib.php');
  30
  31
  32 /**
  33  * The description 'question' type.
  34  *
  35  * @copyright  1999 onwards Martin Dougiamas  {@link http://moodle.com}
  36  * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  37  */
  38 class qtype_description extends question_type {
  39     public function is_real_question_type() {
  40         return false;
  41     }
  42
  43     public function is_usable_by_random() {
  44         return false;
  45     }
  46
  47     public function can_analyse_responses() {
  48         return false;
  49     }
  50
  51     public function save_question($question, $form) {
  52         // Make very sure that descriptions can'e be created with a grade of
  53         // anything other than 0.
  54         $form->defaultmark = 0;
  55         return parent::save_question($question, $form);
  56     }
  57
  58     public function actual_number_of_questions($question) {
  59         // Used for the feature number-of-questions-per-page
  60         // to determine the actual number of questions wrapped by this question.
  61         // The question type description is not even a question
  62         // in itself so it will return ZERO!
  63         return 0;
  64     }
  65
  66     public function get_random_guess_score($questiondata) {
  67         return null;
  68     }
  69 }