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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/>.
/**
* Matching
*
* @package mod
* @subpackage lesson
* @copyright 2009 Sam Hemelryk
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
**/
defined('MOODLE_INTERNAL') || die();
/** Matching question type */
define("LESSON_PAGE_MATCHING", "5");
class lesson_page_type_matching extends lesson_page {
protected $type = lesson_page::TYPE_QUESTION;
protected $typeid = LESSON_PAGE_MATCHING;
protected $typeidstring = 'matching';
protected $string = null;
public function get_typeid() {
return $this->typeid;
}
public function get_typestring() {
if ($this->string===null) {
$this->string = get_string($this->typeidstring, 'lesson');
}
return $this->string;
}
public function get_idstring() {
return $this->typeidstring;
}
public function display($renderer, $attempt) {
global $USER, $CFG, $PAGE;
$mform = $this->make_answer_form($attempt);
$data = new stdClass;
$data->id = $PAGE->cm->id;
$data->pageid = $this->properties->id;
$mform->set_data($data);
return $mform->display();
}
protected function make_answer_form($attempt=null) {
global $USER, $CFG;
// don't shuffle answers (could be an option??)
$getanswers = array_slice($this->get_answers(), 2);
$answers = array();
foreach ($getanswers as $getanswer) {
$answers[$getanswer->id] = $getanswer;
}
$responses = array();
foreach ($answers as $answer) {
// get all the response
if ($answer->response != NULL) {
$responses[] = trim($answer->response);
}
}
$responseoptions = array(''=>get_string('choosedots'));
if (!empty($responses)) {
shuffle($responses);
$responses = array_unique($responses);
foreach ($responses as $response) {
$responseoptions[htmlspecialchars(trim($response))] = $response;
}
}
if (isset($USER->modattempts[$this->lesson->id]) && !empty($attempt->useranswer)) {
$useranswers = explode(',', $attempt->useranswer);
$t = 0;
} else {
$useranswers = array();
}
$action = $CFG->wwwroot.'/mod/lesson/continue.php';
$params = array('answers'=>$answers, 'useranswers'=>$useranswers, 'responseoptions'=>$responseoptions, 'lessonid'=>$this->lesson->id, 'contents'=>$this->get_contents());
$mform = new lesson_display_answer_form_matching($action, $params);
return $mform;
}
public function create_answers($properties) {
global $DB;
// now add the answers
$newanswer = new stdClass;
$newanswer->lessonid = $this->lesson->id;
$newanswer->pageid = $this->properties->id;
$newanswer->timecreated = $this->properties->timecreated;
$answers = array();
// need to add two to offset correct response and wrong response
$this->lesson->maxanswers = $this->lesson->maxanswers + 2;
for ($i = 0; $i < $this->lesson->maxanswers; $i++) {
$answer = clone($newanswer);
if (!empty($properties->answer_editor[$i]) && is_array($properties->answer_editor[$i])) {
$answer->answer = $properties->answer_editor[$i]['text'];
$answer->answerformat = $properties->answer_editor[$i]['format'];
}
if (!empty($properties->response_editor[$i])) {
$answer->response = $properties->response_editor[$i];
$answer->responseformat = 0;
}
if (isset($properties->jumpto[$i])) {
$answer->jumpto = $properties->jumpto[$i];
}
if ($this->lesson->custom && isset($properties->score[$i])) {
$answer->score = $properties->score[$i];
}
if (isset($answer->answer) && $answer->answer != '') {
$answer->id = $DB->insert_record("lesson_answers", $answer);
$answers[$answer->id] = new lesson_page_answer($answer);
} else if ($i < 2) {
$answer->id = $DB->insert_record("lesson_answers", $answer);
$answers[$answer->id] = new lesson_page_answer($answer);
} else {
break;
}
}
$this->answers = $answers;
return $answers;
}
public function check_answer() {
global $CFG, $PAGE;
$formattextdefoptions = new stdClass();
$formattextdefoptions->noclean = true;
$formattextdefoptions->para = false;
$result = parent::check_answer();
$mform = $this->make_answer_form();
$data = $mform->get_data();
require_sesskey();
if (!$data) {
redirect(new moodle_url('/mod/lesson/view.php', array('id'=>$PAGE->cm->id, 'pageid'=>$this->properties->id)));
}
$response = $data->response;
if (!is_array($response)) {
$result->noanswer = true;
return $result;
}
$answers = $this->get_answers();
$correct = array_shift($answers);
$wrong = array_shift($answers);
foreach ($answers as $key=>$answer) {
if ($answer->answer === '' or $answer->response === '') {
// incomplete option!
unset($answers[$key]);
}
}
// get he users exact responses for record keeping
$hits = 0;
$userresponse = array();
foreach ($response as $key => $value) {
foreach($answers as $answer) {
if ($value === $answer->response) {
$userresponse[] = $answer->id;
}
if ((int)$answer->id === (int)$key) {
$result->studentanswer .= '<br />'.format_text($answer->answer, $answer->answerformat, $formattextdefoptions).' = '.$value;
}
if ((int)$answer->id === (int)$key and $value === $answer->response) {
$hits++;
}
}
}
$result->userresponse = implode(",", $userresponse);
if ($hits == count($answers)) {
$result->correctanswer = true;
$result->response = format_text($correct->answer, $correct->answerformat, $formattextdefoptions);
$result->answerid = $correct->id;
$result->newpageid = $correct->jumpto;
} else {
$result->correctanswer = false;
$result->response = format_text($wrong->answer, $wrong->answerformat, $formattextdefoptions);
$result->answerid = $wrong->id;
$result->newpageid = $wrong->jumpto;
}
return $result;
}
public function option_description_string() {
return get_string("firstanswershould", "lesson");
}
public function display_answers(html_table $table) {
$answers = $this->get_answers();
$options = new stdClass;
$options->noclean = true;
$options->para = false;
$i = 1;
$n = 0;
foreach ($answers as $answer) {
if ($n < 2) {
if ($answer->answer != NULL) {
$cells = array();
if ($n == 0) {
$cells[] = "<span class=\"label\">".get_string("correctresponse", "lesson").'</span>';
} else {
$cells[] = "<span class=\"label\">".get_string("wrongresponse", "lesson").'</span>';
}
$cells[] = format_text($answer->answer, $answer->answerformat, $options);
$table->data[] = new html_table_row($cells);
}
if ($n == 0) {
$cells = array();
$cells[] = '<span class="label">'.get_string("correctanswerscore", "lesson")."</span>: ";
$cells[] = $answer->score;
$table->data[] = new html_table_row($cells);
$cells = array();
$cells[] = '<span class="label">'.get_string("correctanswerjump", "lesson")."</span>: ";
$cells[] = $this->get_jump_name($answer->jumpto);
$table->data[] = new html_table_row($cells);
} elseif ($n == 1) {
$cells = array();
$cells[] = '<span class="label">'.get_string("wronganswerscore", "lesson")."</span>: ";
$cells[] = $answer->score;
$table->data[] = new html_table_row($cells);
$cells = array();
$cells[] = '<span class="label">'.get_string("wronganswerjump", "lesson")."</span>: ";
$cells[] = $this->get_jump_name($answer->jumpto);
$table->data[] = new html_table_row($cells);
}
if ($n === 0){
$table->data[count($table->data)-1]->cells[0]->style = 'width:20%;';
}
$n++;
$i--;
} else {
$cells = array();
if ($this->lesson->custom && $answer->score > 0) {
// if the score is > 0, then it is correct
$cells[] = '<span class="labelcorrect">'.get_string("answer", "lesson")." $i</span>: \n";
} else if ($this->lesson->custom) {
$cells[] = '<span class="label">'.get_string("answer", "lesson")." $i</span>: \n";
} else if ($this->lesson->jumpto_is_correct($this->properties->id, $answer->jumpto)) {
$cells[] = '<span class="labelcorrect">'.get_string("answer", "lesson")." $i</span>: \n";
} else {
$cells[] = '<span class="label">'.get_string("answer", "lesson")." $i</span>: \n";
}
$cells[] = format_text($answer->answer, $answer->answerformat, $options);
$table->data[] = new html_table_row($cells);
$cells = array();
$cells[] = '<span class="label">'.get_string("matchesanswer", "lesson")." $i</span>: ";
$cells[] = format_text($answer->response, $answer->responseformat, $options);
$table->data[] = new html_table_row($cells);
}
$i++;
}
return $table;
}
/**
* Updates the page and its answers
*
* @global moodle_database $DB
* @global moodle_page $PAGE
* @param stdClass $properties
* @return bool
*/
public function update($properties, $context = null, $maxbytes = null) {
global $DB, $PAGE;
$answers = $this->get_answers();
$properties->id = $this->properties->id;
$properties->lessonid = $this->lesson->id;
$properties = file_postupdate_standard_editor($properties, 'contents', array('noclean'=>true, 'maxfiles'=>EDITOR_UNLIMITED_FILES, 'maxbytes'=>$PAGE->course->maxbytes), context_module::instance($PAGE->cm->id), 'mod_lesson', 'page_contents', $properties->id);
$DB->update_record("lesson_pages", $properties);
// need to add two to offset correct response and wrong response
$this->lesson->maxanswers += 2;
for ($i = 0; $i < $this->lesson->maxanswers; $i++) {
if (!array_key_exists($i, $this->answers)) {
$this->answers[$i] = new stdClass;
$this->answers[$i]->lessonid = $this->lesson->id;
$this->answers[$i]->pageid = $this->id;
$this->answers[$i]->timecreated = $this->timecreated;
}
if (!empty($properties->answer_editor[$i]) && is_array($properties->answer_editor[$i])) {
$this->answers[$i]->answer = $properties->answer_editor[$i]['text'];
$this->answers[$i]->answerformat = $properties->answer_editor[$i]['format'];
}
if (!empty($properties->response_editor[$i])) {
$this->answers[$i]->response = $properties->response_editor[$i];
$this->answers[$i]->responseformat = 0;
}
if (isset($properties->jumpto[$i])) {
$this->answers[$i]->jumpto = $properties->jumpto[$i];
}
if ($this->lesson->custom && isset($properties->score[$i])) {
$this->answers[$i]->score = $properties->score[$i];
}
// we don't need to check for isset here because properties called it's own isset method.
if ($this->answers[$i]->answer != '') {
if (!isset($this->answers[$i]->id)) {
$this->answers[$i]->id = $DB->insert_record("lesson_answers", $this->answers[$i]);
} else {
$DB->update_record("lesson_answers", $this->answers[$i]->properties());
}
} else if ($i < 2) {
if (!isset($this->answers[$i]->id)) {
$this->answers[$i]->id = $DB->insert_record("lesson_answers", $this->answers[$i]);
} else {
$DB->update_record("lesson_answers", $this->answers[$i]->properties());
}
} else if (isset($this->answers[$i]->id)) {
$DB->delete_records('lesson_answers', array('id'=>$this->answers[$i]->id));
unset($this->answers[$i]);
}
}
return true;
}
public function stats(array &$pagestats, $tries) {
if(count($tries) > $this->lesson->maxattempts) { // if there are more tries than the max that is allowed, grab the last "legal" attempt
$temp = $tries[$this->lesson->maxattempts - 1];
} else {
// else, user attempted the question less than the max, so grab the last one
$temp = end($tries);
}
if ($temp->correct) {
if (isset($pagestats[$temp->pageid]["correct"])) {
$pagestats[$temp->pageid]["correct"]++;
} else {
$pagestats[$temp->pageid]["correct"] = 1;
}
}
if (isset($pagestats[$temp->pageid]["total"])) {
$pagestats[$temp->pageid]["total"]++;
} else {
$pagestats[$temp->pageid]["total"] = 1;
}
return true;
}
public function report_answers($answerpage, $answerdata, $useranswer, $pagestats, &$i, &$n) {
$answers = array();
foreach ($this->get_answers() as $answer) {
$answers[$answer->id] = $answer;
}
$formattextdefoptions = new stdClass;
$formattextdefoptions->para = false; //I'll use it widely in this page
foreach ($answers as $answer) {
if ($n == 0 && $useranswer != NULL && $useranswer->correct) {
if ($answer->response == NULL && $useranswer != NULL) {
$answerdata->response = get_string("thatsthecorrectanswer", "lesson");
} else {
$answerdata->response = $answer->response;
}
if ($this->lesson->custom) {
$answerdata->score = get_string("pointsearned", "lesson").": ".$answer->score;
} else {
$answerdata->score = get_string("receivedcredit", "lesson");
}
} elseif ($n == 1 && $useranswer != NULL && !$useranswer->correct) {
if ($answer->response == NULL && $useranswer != NULL) {
$answerdata->response = get_string("thatsthewronganswer", "lesson");
} else {
$answerdata->response = $answer->response;
}
if ($this->lesson->custom) {
$answerdata->score = get_string("pointsearned", "lesson").": ".$answer->score;
} else {
$answerdata->score = get_string("didnotreceivecredit", "lesson");
}
} elseif ($n > 1) {
$data = '<label class="accesshide" for="answer_' . $n . '">' . get_string('answer', 'lesson') . '</label>';
$data .= "<select id=\"answer_". $n ."\" disabled=\"disabled\"><option selected=\"selected\">".strip_tags(format_string($answer->answer))."</option></select>";
if ($useranswer != NULL) {
$userresponse = explode(",", $useranswer->useranswer);
$data .= '<label class="accesshide" for="stu_answer_response_' . $n . '">' . get_string('matchesanswer', 'lesson') . '</label>';
$data .= "<select id=\"stu_answer_response_" . $n . "\" disabled=\"disabled\"><option selected=\"selected\">";
if (array_key_exists($i, $userresponse)) {
$data .= strip_tags(format_string($answers[$userresponse[$i]]->response));
}
$data .= "</option></select>";
} else {
$data .= '<label class="accesshide" for="answer_response_' . $n . '">' . get_string('matchesanswer', 'lesson') . '</label>';
$data .= "<select id=\"answer_response_" . $n . "\" disabled=\"disabled\"><option selected=\"selected\">".strip_tags(format_string($answer->response))."</option></select>";
}
if ($n == 2) {
if (isset($pagestats[$this->properties->id])) {
if (!array_key_exists('correct', $pagestats[$this->properties->id])) {
$pagestats[$this->properties->id]["correct"] = 0;
}
$percent = $pagestats[$this->properties->id]["correct"] / $pagestats[$this->properties->id]["total"] * 100;
$percent = round($percent, 2);
$percent .= "% ".get_string("answeredcorrectly", "lesson");
} else {
$percent = get_string("nooneansweredthisquestion", "lesson");
}
} else {
$percent = '';
}
$answerdata->answers[] = array($data, $percent);
$i++;
}
$n++;
$answerpage->answerdata = $answerdata;
}
return $answerpage;
}
public function get_jumps() {
global $DB;
// The jumps for matching question type are stored in the 1st and 2nd answer record.
$jumps = array();
if ($answers = $DB->get_records("lesson_answers", array("lessonid" => $this->lesson->id, "pageid" => $this->properties->id), 'id', '*', 0, 2)) {
foreach ($answers as $answer) {
$jumps[] = $this->get_jump_name($answer->jumpto);
}
} else {
$jumps[] = $this->get_jump_name($this->properties->nextpageid);
}
return $jumps;
}
}
class lesson_add_page_form_matching extends lesson_add_page_form_base {
public $qtype = 'matching';
public $qtypestring = 'matching';
public function custom_definition() {
$this->_form->addElement('header', 'correctresponse', get_string('correctresponse', 'lesson'));
$this->_form->addElement('editor', 'answer_editor[0]', get_string('correctresponse', 'lesson'), array('rows'=>'4', 'columns'=>'80'), array('noclean'=>true));
$this->add_jumpto(0, get_string('correctanswerjump','lesson'), LESSON_NEXTPAGE);
$this->add_score(0, get_string("correctanswerscore", "lesson"), 1);
$this->_form->addElement('header', 'wrongresponse', get_string('wrongresponse', 'lesson'));
$this->_form->addElement('editor', 'answer_editor[1]', get_string('wrongresponse', 'lesson'), array('rows'=>'4', 'columns'=>'80'), array('noclean'=>true));
$this->add_jumpto(1, get_string('wronganswerjump','lesson'), LESSON_THISPAGE);
$this->add_score(1, get_string("wronganswerscore", "lesson"), 0);
for ($i = 2; $i < $this->_customdata['lesson']->maxanswers+2; $i++) {
$this->_form->addElement('header', 'matchingpair'.($i-1), get_string('matchingpair', 'lesson', $i-1));
$this->add_answer($i, NULL, ($i < 4));
$required = ($i < 4);
$label = get_string('matchesanswer','lesson');
$count = $i;
$this->_form->addElement('text', 'response_editor['.$count.']', $label, array('size'=>'50'));
$this->_form->setDefault('response_editor['.$count.']', '');
if ($required) {
$this->_form->addRule('response_editor['.$count.']', get_string('required'), 'required', null, 'client');
}
}
}
}
class lesson_display_answer_form_matching extends moodleform {
public function definition() {
global $USER, $OUTPUT;
$mform = $this->_form;
$answers = $this->_customdata['answers'];
$useranswers = $this->_customdata['useranswers'];
$responseoptions = $this->_customdata['responseoptions'];
$lessonid = $this->_customdata['lessonid'];
$contents = $this->_customdata['contents'];
$mform->addElement('header', 'pageheader');
$mform->addElement('html', $OUTPUT->container($contents, 'contents'));
$hasattempt = false;
$disabled = '';
if (isset($useranswers) && !empty($useranswers)) {
$hasattempt = true;
$disabled = array('disabled' => 'disabled');
}
$options = new stdClass;
$options->para = false;
$options->noclean = true;
$mform->addElement('hidden', 'id');
$mform->setType('id', PARAM_INT);
$mform->addElement('hidden', 'pageid');
$mform->setType('pageid', PARAM_INT);
$i = 0;
foreach ($answers as $answer) {
$mform->addElement('html', '<div class="answeroption">');
if ($answer->response != NULL) {
$responseid = 'response['.$answer->id.']';
if ($hasattempt) {
$responseid = 'response_'.$answer->id;
$mform->addElement('hidden', 'response['.$answer->id.']', htmlspecialchars(trim($answers[$useranswers[$i]]->response)));
$mform->setType('response['.$answer->id.']', PARAM_TEXT);
}
$mform->addElement('select', $responseid, format_text($answer->answer,$answer->answerformat,$options), $responseoptions, $disabled);
$mform->setType($responseid, PARAM_TEXT);
if ($hasattempt) {
$mform->setDefault($responseid, htmlspecialchars(trim($answers[$useranswers[$i]]->response))); //TODO: this is suspicious
} else {
$mform->setDefault($responseid, 'answeroption');
}
}
$mform->addElement('html', '</div>');
$i++;
}
if ($hasattempt) {
$this->add_action_buttons(null, get_string("nextpage", "lesson"));
} else {
$this->add_action_buttons(null, get_string("submit", "lesson"));
}
}
}
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