tidyquestionform.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/>.

/**
 * This file defines the editing form used by the tidy question script.
 *
 * @copyright 2013 the Open University
 * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */


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

require_once($CFG->libdir . '/formslib.php');
require_once($CFG->dirroot . '/question/type/stack/stack/graphlayout/graph.php');


/**
 * The editing form used by the tidy question script.
 *
 * @copyright 2013 the Open University
 * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */
class qtype_stack_tidy_question_form extends moodleform {
    protected function definition() {

        $mform = $this->_form;
        $question = $this->_customdata;

        // Inputs.
        $mform->addElement('header', 'inputsheader', stack_string('inputs'));

        foreach ($question->inputs as $inputname => $input) {
            $mform->addElement('text', 'inputname_' . $inputname,
                    stack_string('newnameforx', $inputname), ['size' => 20]);
            $mform->setDefault('inputname_' . $inputname, $inputname);
            $mform->setType('inputname_' . $inputname, PARAM_RAW); // Validated in the validation method.
        }

        // PRTs.
        $mform->addElement('header', 'prtsheader', stack_string('prts'));

        foreach ($question->prts as $prtname => $prt) {
            $mform->addElement('text', 'prtname_' . $prtname,
                    stack_string('newnameforx', $prtname), ['size' => 20]);
            $mform->setDefault('prtname_' . $prtname, $prtname);
            $mform->setType('prtname_' . $prtname, PARAM_RAW); // Validated in the validation method.
        }

        // PRT nodes.
        foreach ($question->prts as $prtname => $prt) {
            $mform->addElement('header', 'prtnodesheader' . $prtname,
                    stack_string('prtnodesheading', $prtname));

            $graph = $this->get_prt_graph($prt);
            $newnames = $graph->get_suggested_node_names();
            $mform->addElement('static', $prtname . 'graph', '',