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📄 edit_form_base.php(10.62 KB)
📄 edit_gapselect_form.php(1.5 KB)
📁 lang
📄 lib.php(1.23 KB)
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📄 question.php(2.08 KB)
📄 questionbase.php(13.37 KB)
📄 questiontype.php(4.31 KB)
📄 questiontypebase.php(13.13 KB)
📄 renderer.php(3.1 KB)
📄 rendererbase.php(5.54 KB)
📄 styles.css(321 B)
📁 tests
📄 version.php(1.07 KB)

Editing: rendererbase.php

<?php
// This file is part of Moodle - http://moodle.org/
//
// Moodle 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.
//
// Moodle 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 Moodle.  If not, see <http://www.gnu.org/licenses/>.

/**
 * Base class for rendering question types like this one.
 *
 * @package    qtype_gapselect
 * @copyright  2011 The Open University
 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */

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

/**
 * Renders question types where the question includes embedded interactive elements.
 *
 * @copyright  2011 The Open University
 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */
abstract class qtype_elements_embedded_in_question_text_renderer
        extends qtype_with_combined_feedback_renderer {
    public function formulation_and_controls(question_attempt $qa,
            question_display_options $options) {

$question = $qa->get_question();

$questiontext = '';
        // Glue question fragments together using unique placeholders, apply format_text to the result
        // and then substitute each placeholder with the embedded element.
        // This will ensure that format_text() is applied to the whole question but not to the embedded elements.
        $placeholders = $this->get_fragments_glue_placeholders($question->textfragments);
        foreach ($question->textfragments as $i => $fragment) {
            if ($i > 0) {
                $questiontext .= $placeholders[$i];
                // There is a preg_replace 11 lines ahead where the $embeddedelements is used as the replace.
                // If there are currency like options ($4) in the select then the preg_replace treats them as backreferences.
                // So we need to escape the backreferences here.
                $embeddedelements[$placeholders[$i]] =
                        preg_replace('/\$(\d)/', '\\\$$1', $this->embedded_element($qa, $i, $options));
            }
            $questiontext .= $fragment;
        }
        $questiontext = $question->format_text($questiontext,
            $question->questiontextformat, $qa, 'question', 'questiontext', $question->id);
        foreach ($placeholders as $i => $placeholder) {
            $questiontext = preg_replace('/'. preg_quote($placeholder, '/') . '/',
                $embeddedelements[$placeholder], $questiontext);
        }

$result = '';
        $result .= html_writer::tag('div', $questiontext, array('class' => 'qtext'));

$result .= $this->post_qtext_elements($qa, $options);

if ($qa->get_state() == question_state::$invalid) {
            $result .= html_writer::nonempty_tag('div',
                    $question->get_validation_error($qa->get_last_qt_data()),
                    array('class' => 'validationerror'));
        }

return $result;
    }

/**
     * Find strings that we can use to glue the fragments with
     *
     * These strings have to be all different and neither of them can be present in the text
     *
     * @param array $fragments
     * @return array array with indexes from 1 to count($fragments)-1
     */
    protected function get_fragments_glue_placeholders($fragments) {
        $fragmentscount = count($fragments);
        if ($fragmentscount <= 1) {
            return [];
        }
        $prefix = '[[$';
        $postfix = ']]';
        $text = join('', $fragments);
        while (preg_match('/' . preg_quote($prefix, '/') . '\\d+' . preg_quote($postfix, '/') . '/', $text)) {
            $prefix .= '$';
        }
        $glues = [];
        for ($i = 1; $i < $fragmentscount; $i++) {
            $glues[$i] = $prefix . $i . $postfix;
        }
        return $glues;
    }

protected function qtext_id($qa) {
        return str_replace(':', '_', $qa->get_qt_field_name(''));
    }

protected abstract function embedded_element(question_attempt $qa, $place,
            question_display_options $options);

protected function post_qtext_elements(question_attempt $qa,
            question_display_options $options) {
        return '';
    }

protected function box_id(question_attempt $qa, $place) {
        return str_replace(':', '_', $qa->get_qt_field_name($place));
    }

public function specific_feedback(question_attempt $qa) {
        return $this->combined_feedback($qa);
    }

public function correct_response(question_attempt $qa) {
        $question = $qa->get_question();

$correctanswer = '';
        foreach ($question->textfragments as $i => $fragment) {
            if ($i > 0) {
                $group = $question->places[$i];
                $choice = $question->choices[$group][$question->rightchoices[$i]];
                $correctanswer .= '[' . str_replace('-', '&#x2011;',
                        $choice->text) . ']';
            }
            $correctanswer .= $fragment;
        }

if (!empty($correctanswer)) {
            return get_string('correctansweris', 'qtype_gapselect',
                    $question->format_text($correctanswer, $question->questiontextformat,
                            $qa, 'question', 'questiontext', $question->id));
        }
    }
}

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