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questiontype.php
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<?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/>.
/**
* Question type class for the combined question type.
*
* @package qtype_combined
* @copyright 2013 The Open University
* @author Jamie Pratt <[email protected]>
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
defined('MOODLE_INTERNAL') || die();
require_once($CFG->libdir . '/questionlib.php');
require_once($CFG->dirroot . '/question/engine/lib.php');
require_once($CFG->dirroot . '/question/type/combined/question.php');
require_once($CFG->dirroot . '/question/type/combined/combiner/forquestiontype.php');
require_once($CFG->dirroot . '/question/type/combined/combiner/runtime.php');
/**
* The combined question type.
*
* @copyright 2013 The Open University
* @author Jamie Pratt <[email protected]>
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
class qtype_combined extends question_type {
public function move_files($questionid, $oldcontextid, $newcontextid) {
parent::move_files($questionid, $oldcontextid, $newcontextid);
$this->move_files_in_combined_feedback($questionid, $oldcontextid, $newcontextid);
$this->move_files_in_hints($questionid, $oldcontextid, $newcontextid);
$combiner = new qtype_combined_combiner_for_question_type();
$combiner->move_subq_files($questionid, $oldcontextid, $newcontextid);
}
protected function delete_files($questionid, $contextid) {
parent::delete_files($questionid, $contextid);
$this->delete_files_in_combined_feedback($questionid, $contextid);
$this->delete_files_in_hints($questionid, $contextid);
}
public function save_question_options($fromform) {
global $DB;
$combiner = new qtype_combined_combiner_for_question_type();
if (!$options = $DB->get_record('qtype_combined', array('questionid' => $fromform->id))) {
$options = new stdClass();
$options->questionid = $fromform->id;
$options->correctfeedback = '';
$options->partiallycorrectfeedback = '';
$options->incorrectfeedback = '';
$options->id = $DB->insert_record('qtype_combined', $options);
}
$options = $this->save_combined_feedback_helper($options, $fromform, $fromform->context, true);
$DB->update_record('qtype_combined', $options);
if (isset($fromform->subquestions)) {
// Question import.
foreach ($fromform->subquestions as $subquestion) {
$subquestion->parent = $fromform->id;
$subquestion->context = $fromform->context;
$subquestion->category = $fromform->category;
$subquestion->idnumber = null;
$this->save_imported_question($subquestion);
}
} else {
$combiner->save_subqs($fromform, $fromform->context->id);
}
$this->save_hints($fromform, true);
}
/**
* This is a duplication of the functionality used to save an imported question. This function will be removed in Moodle 2.6
* when core Moodle is refactored so that save_question is used to save imported questions.
* @param $fromimport stdClass Data from question import.
* @return bool|null null if everything went OK, true if there is an error or false if a notice.
*/
protected function save_imported_question($fromimport) {
global $USER, $DB, $CFG, $OUTPUT;
$fromimport->stamp = make_unique_id_code(); // Set the unique code (not to be changed).
$fromimport->createdby = $USER->id;
$fromimport->timecreated = time();
$fromimport->modifiedby = $USER->id;
$fromimport->timemodified = time();
$fileoptions = array(
'subdirs' => false,
'maxfiles' => -1,
'maxbytes' => 0,
);
$fromimport->id = $DB->insert_record('question', $fromimport);
if (isset($fromimport->questiontextitemid)) {
$fromimport->questiontext = file_save_draft_area_files($fromimport->questiontextitemid,
$fromimport->context->id, 'question', 'questiontext',
$fromimport->id,
$fileoptions, $fromimport->questiontext);
} else if (isset($fromimport->questiontextfiles)) {
foreach ($fromimport->questiontextfiles as $file) {
$this->import_file($fromimport->context, 'question', 'questiontext', $fromimport->id, $file);
}
}
if (isset($fromimport->generalfeedbackitemid)) {
$fromimport->generalfeedback = file_save_draft_area_files($fromimport->generalfeedbackitemid,
$fromimport->context->id, 'question', 'generalfeedback',
$fromimport->id,
$fileoptions, $fromimport->generalfeedback);
} else if (isset($fromimport->generalfeedbackfiles)) {
foreach ($fromimport->generalfeedbackfiles as $file) {
$this->import_file($fromimport->context, 'question', 'generalfeedback', $fromimport->id, $file);
}
}
$DB->update_record('question', $fromimport);
// Now to save all the answers and type-specific options.
$result = question_bank::get_qtype($fromimport->qtype)->save_question_options($fromimport);
if (!empty($result->error)) {
echo $OUTPUT->notification($result->error);
return false;
}
if (!empty($result->notice)) {
echo $OUTPUT->notification($result->notice);
return true;
}
if (!empty($CFG->usetags) && isset($fromimport->tags)) {
require_once($CFG->dirroot.'/tag/lib.php');
core_tag_tag::set_item_tags('core_question', 'question', $fromimport->id,
$fromimport->context, $fromimport->tags);
}
// Give the question a unique version stamp determined by question_hash().
$DB->set_field('question', 'version', question_hash($fromimport),
array('id' => $fromimport->id));
return null;
}
public function make_question($questiondata) {
$question = parent::make_question($questiondata);
$question->combiner = new qtype_combined_combiner_for_run_time_question_instance();
// Need to process question text to get third param if any.
$question->combiner->find_included_subqs_in_question_text($questiondata->questiontext);
$question->combiner->create_subqs_from_subq_data($questiondata->subquestions);
$question->combiner->make_subqs();
return $question;
}
protected function make_hint($hint) {
return question_hint_with_parts::load_from_record($hint);
}
protected function initialise_question_instance(question_definition $question, $questiondata) {
parent::initialise_question_instance($question, $questiondata);
$this->initialise_combined_feedback($question, $questiondata, true);
}
public function get_question_options($question) {
global $DB;
if (false === parent::get_question_options($question)) {
return false;
}
$question->options = $DB->get_record('qtype_combined', array('questionid' => $question->id), '*', MUST_EXIST);
$question->subquestions = qtype_combined_combiner_base::get_subq_data_from_db($question->id, true);
return true;
}
public function get_random_guess_score($questiondata) {
$overallrandomguessscore = 0;
foreach ($questiondata->subquestions as $subqdata) {
$subqrandomguessscore = question_bank::get_qtype($subqdata->qtype)->get_random_guess_score($subqdata);
$overallrandomguessscore += $subqdata->defaultmark * $subqrandomguessscore;
}
return $overallrandomguessscore;
}
public function get_possible_responses($questiondata) {
$allpossibleresponses = array();
foreach ($questiondata->subquestions as $subqdata) {
$possresponses = question_bank::get_qtype($subqdata->qtype)->get_possible_responses($subqdata);
foreach ($possresponses as $subqid => $subqpossresponses) {
$respclassid = qtype_combined_type_manager::response_id($subqdata->name, $subqdata->qtype, $subqid);
foreach ($subqpossresponses as $subqpossresponse) {
$subqpossresponse->fraction = $subqpossresponse->fraction * $subqdata->defaultmark;
}
$allpossibleresponses[$respclassid] = $subqpossresponses;
}
}
ksort($allpossibleresponses);
return $allpossibleresponses;
}
public function export_to_xml($question, qformat_xml $format, $extra = null) {
$output = '';
$output .= $format->write_combined_feedback($question->options, $question->id, $question->contextid);
$output .= "<subquestions>\n";
foreach ($question->subquestions as $subquestion) {
$output .= $format->writequestion($subquestion);
}
$output .= "</subquestions>\n";
return $output;
}
public function import_from_xml($data, $question, qformat_xml $format, $extra=null) {
if (!isset($data['@']['type']) || $data['@']['type'] != 'combined') {
return false;
}
$question = $format->import_headers($data);
$question->qtype = 'combined';
$format->import_combined_feedback($question, $data, true);
$format->import_hints($question, $data, true, false, $format->get_format($question->questiontextformat));
$question->subquestions = $format->import_questions($data['#']['subquestions'][0]['#']['question']);
return $question;
}
}