Proyectos de Subversion Moodle

<?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/>.

/**

 * True-false question renderer class.

 *

 * @package    qtype

 * @subpackage truefalse

 * @copyright  2009 The Open University

 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later

 */

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

/**

 * Generates the output for true-false questions.

 *

 * @copyright  2009 The Open University

 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later

 */

class qtype_truefalse_renderer extends qtype_renderer {

    public function formulation_and_controls(question_attempt $qa,

            question_display_options $options) {

        /** @var qtype_truefalse_question $question */

        $question = $qa->get_question();

        $response = $qa->get_last_qt_var('answer', '');

        $inputname = $qa->get_qt_field_name('answer');

        $trueattributes = array(

            'type' => 'radio',

            'name' => $inputname,

            'value' => 1,

            'id' => $inputname . 'true',

        );

        $falseattributes = array(

            'type' => 'radio',

            'name' => $inputname,

            'value' => 0,

            'id' => $inputname . 'false',

        );

        if ($options->readonly) {

            $trueattributes['disabled'] = 'disabled';

            $falseattributes['disabled'] = 'disabled';

        }

        // Work out which radio button to select (if any).

        $truechecked = false;

        $falsechecked = false;

        $responsearray = array();

        if ($response) {

            $trueattributes['checked'] = 'checked';

            $truechecked = true;

            $responsearray = array('answer' => 1);

        } else if ($response !== '') {

            $falseattributes['checked'] = 'checked';

            $falsechecked = true;

            $responsearray = array('answer' => 1);

        }

        // Work out visual feedback for answer correctness.

        $trueclass = '';

        $falseclass = '';

        $truefeedbackimg = '';

        $falsefeedbackimg = '';

        if ($options->correctness) {

            if ($truechecked) {

                $trueclass = ' ' . $this->feedback_class((int) $question->rightanswer);

                $truefeedbackimg = $this->feedback_image((int) $question->rightanswer);

            } else if ($falsechecked) {

                $falseclass = ' ' . $this->feedback_class((int) (!$question->rightanswer));

                $falsefeedbackimg = $this->feedback_image((int) (!$question->rightanswer));

            }

        }

        $radiotrue = html_writer::empty_tag('input', $trueattributes) .

                html_writer::tag('label', get_string('true', 'qtype_truefalse'),

                array('for' => $trueattributes['id'], 'class' => 'ml-1'));

        $radiofalse = html_writer::empty_tag('input', $falseattributes) .

                html_writer::tag('label', get_string('false', 'qtype_truefalse'),

                array('for' => $falseattributes['id'], 'class' => 'ml-1'));

        $result = '';

        $result .= html_writer::tag('div', $question->format_questiontext($qa),

                array('class' => 'qtext'));

        $result .= html_writer::start_tag('fieldset', array('class' => 'ablock'));

        if (!empty($question->showstandardinstruction)) {

            $legendclass = '';

            $questionnumber = $options->add_question_identifier_to_label(get_string('selectone', 'qtype_truefalse'), true, true);

        } else {

            $legendclass = 'sr-only';

            $questionnumber = $options->add_question_identifier_to_label(get_string('answer'), true, true);

        }

        $result .= html_writer::tag('legend', $questionnumber,

            array('class' => 'prompt h6 font-weight-normal ' . $legendclass));

        $result .= html_writer::start_tag('div', array('class' => 'answer'));

        $result .= html_writer::tag('div', $radiotrue . ' ' . $truefeedbackimg,

                array('class' => 'r0' . $trueclass));

        $result .= html_writer::tag('div', $radiofalse . ' ' . $falsefeedbackimg,

                array('class' => 'r1' . $falseclass));

        $result .= html_writer::end_tag('div'); // Answer.

        $result .= html_writer::end_tag('fieldset'); // Ablock.

        if ($qa->get_state() == question_state::$invalid) {

            $result .= html_writer::nonempty_tag('div',

                    $question->get_validation_error($responsearray),

                    array('class' => 'validationerror'));

        }

        return $result;

    }

    public function specific_feedback(question_attempt $qa) {

        $question = $qa->get_question();

        $response = $qa->get_last_qt_var('answer', '');

        if ($response) {

            return $question->format_text($question->truefeedback, $question->truefeedbackformat,

                    $qa, 'question', 'answerfeedback', $question->trueanswerid);

        } else if ($response !== '') {

            return $question->format_text($question->falsefeedback, $question->falsefeedbackformat,

                    $qa, 'question', 'answerfeedback', $question->falseanswerid);

        }

    }

    public function correct_response(question_attempt $qa) {

        $question = $qa->get_question();

        if ($question->rightanswer) {

            return get_string('correctanswertrue', 'qtype_truefalse');

        } else {

            return get_string('correctanswerfalse', 'qtype_truefalse');

        }

    }

}