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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/>.
/**
* True/false
*
* @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();
/** True/False question type */
define("LESSON_PAGE_TRUEFALSE", "2");
class lesson_page_type_truefalse extends lesson_page {
protected $type = lesson_page::TYPE_QUESTION;
protected $typeidstring = 'truefalse';
protected $typeid = LESSON_PAGE_TRUEFALSE;
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;
$answers = $this->get_answers();
shuffle($answers);
$params = array('answers'=>$answers, 'lessonid'=>$this->lesson->id, 'contents'=>$this->get_contents(), 'attempt'=>$attempt);
$mform = new lesson_display_answer_form_truefalse($CFG->wwwroot.'/mod/lesson/continue.php', $params);
$data = new stdClass;
$data->id = $PAGE->cm->id;
$data->pageid = $this->properties->id;
$mform->set_data($data);
return $mform->display();
}
public function check_answer() {
global $DB, $CFG;
$formattextdefoptions = new stdClass();
$formattextdefoptions->noclean = true;
$formattextdefoptions->para = false;
$answers = $this->get_answers();
shuffle($answers);
$params = array('answers'=>$answers, 'lessonid'=>$this->lesson->id, 'contents'=>$this->get_contents());
$mform = new lesson_display_answer_form_truefalse($CFG->wwwroot.'/mod/lesson/continue.php', $params);
$data = $mform->get_data();
require_sesskey();
$result = parent::check_answer();
$answerid = $data->answerid;
if ($answerid === false) {
$result->noanswer = true;
return $result;
}
$result->answerid = $answerid;
$answer = $DB->get_record("lesson_answers", array("id" => $result->answerid), '*', MUST_EXIST);
if ($this->lesson->jumpto_is_correct($this->properties->id, $answer->jumpto)) {
$result->correctanswer = true;
}
if ($this->lesson->custom) {
if ($answer->score > 0) {
$result->correctanswer = true;
} else {
$result->correctanswer = false;
}
}
$result->newpageid = $answer->jumpto;
$result->response = format_text($answer->response, $answer->responseformat, $formattextdefoptions);
$result->studentanswer = $result->userresponse = $result->response;
return $result;
}
public function display_answers(html_table $table) {
$answers = $this->get_answers();
$options = new stdClass();
$options->noclean = true;
$options->para = false;
$i = 1;
foreach ($answers as $answer) {
$cells = array();
if ($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)) {
// underline correct answers
$cells[] = '<span class="correct">'.get_string("answer", "lesson")." $i</span>: \n";
} else {
$cells[] = '<span class="labelcorrect">'.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("response", "lesson")." $i</span>";
$cells[] = format_text($answer->response, $answer->responseformat, $options);
$table->data[] = new html_table_row($cells);
$cells = array();
$cells[] = "<span class=\"label\">".get_string("score", "lesson").'</span>';
$cells[] = $answer->score;
$table->data[] = new html_table_row($cells);
$cells = array();
$cells[] = "<span class=\"label\">".get_string("jump", "lesson").'</span>';
$cells[] = $this->get_jump_name($answer->jumpto);
$table->data[] = new html_table_row($cells);
if ($i === 1){
$table->data[count($table->data)-1]->cells[0]->style = 'width:20%;';
}
$i++;
}
return $table;
}
public function stats(array &$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 ($this->properties->qoption) {
$userresponse = explode(",", $temp->useranswer);
foreach ($userresponse as $response) {
if (isset($pagestats[$temp->pageid][$response])) {
$pagestats[$temp->pageid][$response]++;
} else {
$pagestats[$temp->pageid][$response] = 1;
}
}
} else {
if (isset($pagestats[$temp->pageid][$temp->answerid])) {
$pagestats[$temp->pageid][$temp->answerid]++;
} else {
$pagestats[$temp->pageid][$temp->answerid] = 1;
}
}
if (isset($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 = $this->get_answers();
$formattextdefoptions = new stdClass(); //I'll use it widely in this page
$formattextdefoptions->para = false;
$formattextdefoptions->noclean = true;
foreach ($answers as $answer) {
if ($this->properties->qoption) {
if ($useranswer == NULL) {
$userresponse = array();
} else {
$userresponse = explode(",", $useranswer->useranswer);
}
if (in_array($answer->id, $userresponse)) {
// make checked
$data = "<input readonly=\"readonly\" disabled=\"disabled\" name=\"answer[$i]\" checked=\"checked\" type=\"checkbox\" value=\"1\" />";
if (!isset($answerdata->response)) {
if ($answer->response == NULL) {
if ($useranswer->correct) {
$answerdata->response = get_string("thatsthecorrectanswer", "lesson");
} else {
$answerdata->response = get_string("thatsthewronganswer", "lesson");
}
} else {
$answerdata->response = format_text($answer->response, $answer->responseformat, $formattextdefoptions);
}
}
if (!isset($answerdata->score)) {
if ($this->lesson->custom) {
$answerdata->score = get_string("pointsearned", "lesson").": ".$answer->score;
} elseif ($useranswer->correct) {
$answerdata->score = get_string("receivedcredit", "lesson");
} else {
$answerdata->score = get_string("didnotreceivecredit", "lesson");
}
}
} else {
// unchecked
$data = "<input type=\"checkbox\" readonly=\"readonly\" name=\"answer[$i]\" value=\"0\" disabled=\"disabled\" />";
}
if (($answer->score > 0 && $this->lesson->custom) || ($this->lesson->jumpto_is_correct($this->properties->id, $answer->jumpto) && !$this->lesson->custom)) {
$data .= "<div class=highlight>".format_text($answer->answer, $answer->answerformat, $formattextdefoptions)."</div>";
} else {
$data .= format_text($answer->answer, $answer->answerformat, $formattextdefoptions);
}
} else {
if ($useranswer != NULL and $answer->id == $useranswer->answerid) {
// make checked
$data = "<input readonly=\"readonly\" disabled=\"disabled\" name=\"answer[$i]\" checked=\"checked\" type=\"checkbox\" value=\"1\" />";
if ($answer->response == NULL) {
if ($useranswer->correct) {
$answerdata->response = get_string("thatsthecorrectanswer", "lesson");
} else {
$answerdata->response = get_string("thatsthewronganswer", "lesson");
}
} else {
$answerdata->response = format_text($answer->response, $answer->responseformat, $formattextdefoptions);
}
if ($this->lesson->custom) {
$answerdata->score = get_string("pointsearned", "lesson").": ".$answer->score;
} elseif ($useranswer->correct) {
$answerdata->score = get_string("receivedcredit", "lesson");
} else {
$answerdata->score = get_string("didnotreceivecredit", "lesson");
}
} else {
// unchecked
$data = "<input type=\"checkbox\" readonly=\"readonly\" name=\"answer[$i]\" value=\"0\" disabled=\"disabled\" />";
}
if (($answer->score > 0 && $this->lesson->custom) || ($this->lesson->jumpto_is_correct($this->properties->id, $answer->jumpto) && !$this->lesson->custom)) {
$data .= "<div class=\"highlight\">".format_text($answer->answer, $answer->answerformat, $formattextdefoptions)."</div>";
} else {
$data .= format_text($answer->answer, $answer->answerformat, $formattextdefoptions);
}
}
if (isset($pagestats[$this->properties->id][$answer->id])) {
$percent = $pagestats[$this->properties->id][$answer->id] / $pagestats[$this->properties->id]["total"] * 100;
$percent = round($percent, 2);
$percent .= "% ".get_string("checkedthisone", "lesson");
} else {
$percent = get_string("noonecheckedthis", "lesson");
}
$answerdata->answers[] = array($data, $percent);
$answerpage->answerdata = $answerdata;
}
return $answerpage;
}
}
class lesson_add_page_form_truefalse extends lesson_add_page_form_base {
public $qtype = 'truefalse';
public $qtypestring = 'truefalse';
public function custom_definition() {
$this->_form->addElement('header', 'answertitle0', get_string('correctresponse', 'lesson'));
$this->add_answer(0, NULL, true);
$this->add_response(0);
$this->add_jumpto(0, get_string('correctanswerjump', 'lesson'), LESSON_NEXTPAGE);
$this->add_score(0, get_string('correctanswerscore', 'lesson'), 1);
$this->_form->addElement('header', 'answertitle1', get_string('wrongresponse', 'lesson'));
$this->add_answer(1, NULL, true);
$this->add_response(1);
$this->add_jumpto(1, get_string('wronganswerjump', 'lesson'), LESSON_THISPAGE);
$this->add_score(1, get_string('wronganswerscore', 'lesson'), 0);
}
}
class lesson_display_answer_form_truefalse extends moodleform {
public function definition() {
global $USER, $OUTPUT;
$mform = $this->_form;
$answers = $this->_customdata['answers'];
$lessonid = $this->_customdata['lessonid'];
$contents = $this->_customdata['contents'];
if (array_key_exists('attempt', $this->_customdata)) {
$attempt = $this->_customdata['attempt'];
} else {
$attempt = new stdClass();
$attempt->answerid = null;
}
$mform->addElement('header', 'pageheader');
$mform->addElement('html', $OUTPUT->container($contents, 'contents'));
$hasattempt = false;
$disabled = '';
if (isset($USER->modattempts[$lessonid]) && !empty($USER->modattempts[$lessonid])) {
$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">');
$ansid = 'answerid';
if ($hasattempt) {
$ansid = 'answer_id';
}
$mform->addElement('radio', $ansid, null, format_text($answer->answer, $answer->answerformat, $options), $answer->id, $disabled);
$mform->setType($ansid, PARAM_INT);
if ($hasattempt && $answer->id == $USER->modattempts[$lessonid]->answerid) {
$mform->setDefault($ansid, $attempt->answerid);
$mform->addElement('hidden', 'answerid', $answer->id);
$mform->setType('answerid', PARAM_INT);
}
$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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