question.php

<?php
// This file is part of Stack - http://stack.maths.ed.ac.uk/
//
// Stack 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.
//
// Stack 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 Stack.  If not, see <http://www.gnu.org/licenses/>.

/**
 * Stack question definition class.
 *
 * @package   qtype_stack
 * @copyright 2012 The Open University
 * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */

defined('MOODLE_INTERNAL') || die();

require_once(__DIR__ . '/stack/input/factory.class.php');
require_once(__DIR__ . '/stack/cas/keyval.class.php');
require_once(__DIR__ . '/stack/cas/castext2/castext2_evaluatable.class.php');
require_once(__DIR__ . '/stack/cas/cassecurity.class.php');
require_once($CFG->dirroot . '/question/behaviour/adaptivemultipart/behaviour.php');
require_once(__DIR__ . '/locallib.php');
require_once(__DIR__ . '/questiontype.php');
require_once(__DIR__ . '/stack/cas/secure_loader.class.php');
require_once(__DIR__ . '/stack/prt.class.php');
require_once(__DIR__ . '/stack/prt.evaluatable.class.php');
require_once(__DIR__ . '/vle_specific.php');

/**
 * Represents a Stack question.
 *
 * @copyright 2012 The Open University
 * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */
class qtype_stack_question extends question_graded_automatically_with_countback
        implements question_automatically_gradable_with_multiple_parts {

    /**
     * @var string STACK specific: Holds the version of the question when it was last saved.
     */
    public $stackversion;

    /**
     * @var string STACK specific: variables, as authored by the teacher.
     */
    public $questionvariables;

    /**
     * @var string STACK specific: variables, as authored by the teacher.
     */
    public $questionnote;

    /**
     * @var string STACK specific: allow a question to carry some description/discussion.
     */
    public $questiondescription;

    /** @var int one of the FORMAT_... constants */
    public $questiondescriptionformat;