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184 lines
9.1 KiB
184 lines
9.1 KiB
2 years ago
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<?php
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// This file is part of Moodle - http://moodle.org/
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//
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// Moodle is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// Moodle is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
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/**
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* @package backup-convert
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* @copyright 2012 Darko Miletic <dmiletic@moodlerooms.com>
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* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
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*/
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defined('MOODLE_INTERNAL') or die('Direct access to this script is forbidden.');
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require_once('cc_asssesment.php');
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class cc_assesment_question_truefalse extends cc_assesment_question_proc_base {
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public function __construct($quiz, $questions, $manifest, $section, $question_node, $rootpath, $contextid, $outdir) {
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parent::__construct($quiz, $questions, $manifest, $section, $question_node, $rootpath, $contextid, $outdir);
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$this->qtype = cc_qti_profiletype::true_false;
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// Determine the correct answer by finding out which answer has the non zero fraction...
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// This is because a true / false question type can have 'false' as the correct answer.
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$answers = $this->questions->nodeList('plugin_qtype_truefalse_question/answers/answer', $this->question_node);
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foreach ($answers as $answer) {
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$fraction = $this->questions->nodeValue('fraction', $answer);
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if ($fraction != 0) {
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$this->correct_answer_node_id = (int)$this->questions->nodeValue('@id', $answer);
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}
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}
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$maximum_quiz_grade = (int)$this->quiz->nodeValue('/activity/quiz/grade');
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$this->total_grade_value = ($maximum_quiz_grade + 1).'.0000000';
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}
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public function on_generate_answers() {
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// Add responses holder.
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$qresponse_lid = new cc_response_lidtype();
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$this->qresponse_lid = $qresponse_lid;
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$this->qpresentation->set_response_lid($qresponse_lid);
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$qresponse_choice = new cc_assesment_render_choicetype();
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$qresponse_lid->set_render_choice($qresponse_choice);
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// Mark that question has only one correct answer -
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// which applies for multiple choice and yes/no questions.
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$qresponse_lid->set_rcardinality(cc_qti_values::Single);
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// Are we to shuffle the responses?
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$shuffle_answers = (int)$this->quiz->nodeValue('/activity/quiz/shuffleanswers') > 0;
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$qresponse_choice->enable_shuffle($shuffle_answers);
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$answerlist = array();
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$qa_responses = $this->questions->nodeList('plugin_qtype_truefalse_question/answers/answer', $this->question_node);
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foreach ($qa_responses as $node) {
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$answer_content = $this->questions->nodeValue('answertext', $node);
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$id = ((int)$this->questions->nodeValue('@id', $node) == $this->correct_answer_node_id);
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$qresponse_label = cc_assesment_helper::add_answer( $qresponse_choice,
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$answer_content,
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cc_qti_values::htmltype);
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$answer_ident = strtolower(trim($answer_content));
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$qresponse_label->set_ident($answer_ident);
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$feedback_ident = ($id) ? 'correct_fb' : 'incorrect_fb';
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if (empty($this->correct_answer_ident) && $id) {
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$this->correct_answer_ident = $answer_ident;
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}
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// Add answer specific feedback if not empty.
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$content = $this->questions->nodeValue('feedback', $node);
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if (!empty($content)) {
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$result = cc_helpers::process_linked_files( $content,
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$this->manifest,
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$this->rootpath,
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$this->contextid,
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$this->outdir);
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cc_assesment_helper::add_feedback( $this->qitem,
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$result[0],
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cc_qti_values::htmltype,
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$feedback_ident);
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pkg_resource_dependencies::instance()->add($result[1]);
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$answerlist[$answer_ident] = $feedback_ident;
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}
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}
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$this->answerlist = $answerlist;
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}
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public function on_generate_response_processing() {
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parent::on_generate_response_processing();
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// Response conditions.
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// General unconditional feedback must be added as a first respcondition
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// without any condition and just displayfeedback (if exists).
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if (!empty($this->general_feedback)) {
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$qrespcondition = new cc_assesment_respconditiontype();
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$qrespcondition->set_title('General feedback');
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$this->qresprocessing->add_respcondition($qrespcondition);
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$qrespcondition->enable_continue();
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// Define the condition for success.
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$qconditionvar = new cc_assignment_conditionvar();
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$qrespcondition->set_conditionvar($qconditionvar);
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$qother = new cc_assignment_conditionvar_othertype();
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$qconditionvar->set_other($qother);
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$qdisplayfeedback = new cc_assignment_displayfeedbacktype();
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$qrespcondition->add_displayfeedback($qdisplayfeedback);
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$qdisplayfeedback->set_feedbacktype(cc_qti_values::Response);
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$qdisplayfeedback->set_linkrefid('general_fb');
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}
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// Success condition.
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// For all question types outside of the Essay question, scoring is done in a
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// single <respcondition> with a continue flag set to No. The outcome is always
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// a variable named SCORE which value must be set to 100 in case of correct answer.
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// Partial scores (not 0 or 100) are not supported.
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$qrespcondition = new cc_assesment_respconditiontype();
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$qrespcondition->set_title('Correct');
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$this->qresprocessing->add_respcondition($qrespcondition);
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$qrespcondition->enable_continue(false);
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$qsetvar = new cc_assignment_setvartype(100);
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$qrespcondition->add_setvar($qsetvar);
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// Define the condition for success.
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$qconditionvar = new cc_assignment_conditionvar();
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$qrespcondition->set_conditionvar($qconditionvar);
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// TODO: recheck this.
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$qvarequal = new cc_assignment_conditionvar_varequaltype($this->correct_answer_ident);
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$qconditionvar->set_varequal($qvarequal);
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$qvarequal->set_respident($this->qresponse_lid->get_ident());
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if (array_key_exists($this->correct_answer_ident, $this->answerlist)) {
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$qdisplayfeedback = new cc_assignment_displayfeedbacktype();
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$qrespcondition->add_displayfeedback($qdisplayfeedback);
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$qdisplayfeedback->set_feedbacktype(cc_qti_values::Response);
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$qdisplayfeedback->set_linkrefid($this->answerlist[$this->correct_answer_ident]);
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}
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foreach ($this->correct_feedbacks as $ident) {
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$qdisplayfeedback = new cc_assignment_displayfeedbacktype();
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$qrespcondition->add_displayfeedback($qdisplayfeedback);
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$qdisplayfeedback->set_feedbacktype(cc_qti_values::Response);
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$qdisplayfeedback->set_linkrefid($ident);
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}
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// Rest of the conditions.
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foreach ($this->answerlist as $ident => $refid) {
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if ($ident == $this->correct_answer_ident) {
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continue;
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}
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$qrespcondition = new cc_assesment_respconditiontype();
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$this->qresprocessing->add_respcondition($qrespcondition);
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$qsetvar = new cc_assignment_setvartype(0);
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$qrespcondition->add_setvar($qsetvar);
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// Define the condition for fail.
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$qconditionvar = new cc_assignment_conditionvar();
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$qrespcondition->set_conditionvar($qconditionvar);
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$qvarequal = new cc_assignment_conditionvar_varequaltype($ident);
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$qconditionvar->set_varequal($qvarequal);
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$qvarequal->set_respident($this->qresponse_lid->get_ident());
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$qdisplayfeedback = new cc_assignment_displayfeedbacktype();
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$qrespcondition->add_displayfeedback($qdisplayfeedback);
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$qdisplayfeedback->set_feedbacktype(cc_qti_values::Response);
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$qdisplayfeedback->set_linkrefid($refid);
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foreach ($this->incorrect_feedbacks as $ident) {
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$qdisplayfeedback = new cc_assignment_displayfeedbacktype();
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$qrespcondition->add_displayfeedback($qdisplayfeedback);
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$qdisplayfeedback->set_feedbacktype(cc_qti_values::Response);
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$qdisplayfeedback->set_linkrefid($ident);
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}
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}
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}
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}
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