<?php
/* For licensing terms, see /license.txt */
/**
* CLASS MultipleAnswer
*
* This class allows to instantiate an object of type MULTIPLE_ANSWER
* (MULTIPLE CHOICE, MULTIPLE ANSWER), extending the class question
* @author Julio Montoya
* @package chamilo.exercise
**/
/**
* Code
*/
if(!class_exists('MultipleAnswerTrueFalse')):
/**
* Class
* @package chamilo.exercise
*/
class MultipleAnswerTrueFalse extends Question {
static $typePicture = 'mcmao.gif';
static $explanationLangVar = 'MultipleAnswerTrueFalse';
var $options;
/**
* Constructor
*/
function MultipleAnswerTrueFalse(){
parent::question();
$this->type = MULTIPLE_ANSWER_TRUE_FALSE;
$this->isContent = $this-> getIsContent();
$this->options = array(1=>get_lang('True'),2 =>get_lang('False'), 3 =>get_lang('DoubtScore'));
}
/**
* function which redifines Question::createAnswersForm
* @param the formvalidator instance
* @param the answers number to display
*/
function createAnswersForm ($form) {
$nb_answers = isset($_POST['nb_answers']) ? $_POST['nb_answers'] : 4; // The previous default value was 2. See task #1759.
$nb_answers += (isset($_POST['lessAnswers']) ? -1 : (isset($_POST['moreAnswers']) ? 1 : 0));
$course_id = api_get_course_int_id();
$obj_ex = $_SESSION['objExercise'];
$renderer = & $form->defaultRenderer();
$defaults = array();
$html = '< table class = "data_table" >
< tr style = "text-align: center;" >
< th >
'.get_lang('Number').'
< / th >
< th >
'.get_lang('True').'
< / th >
< th >
'.get_lang('False').'
< / th >
< th >
'.get_lang('Answer').'
< / th > ';
// show column comment when feedback is enable
if ($obj_ex->selectFeedbackType() != EXERCISE_FEEDBACK_TYPE_EXAM ) {
$html .='< th > '.get_lang('Comment').'< / th > ';
}
$html .= '< / tr > ';
$form -> addElement ('label', get_lang('Answers').'< br / > < img src = "../img/fill_field.png" > ', $html);
$correct = 0;
if (!empty($this -> id)) {
$answer = new Answer($this -> id);
$answer->read();
if (count($answer->nbrAnswers) > 0 & & !$form->isSubmitted()) {
$nb_answers = $answer->nbrAnswers;
}
}
$form -> addElement('hidden', 'nb_answers');
$boxes_names = array();
if ($nb_answers < 1 ) {
$nb_answers = 1;
Display::display_normal_message(get_lang('YouHaveToCreateAtLeastOneAnswer'));
}
// Can be more options
$option_data = Question::readQuestionOption($this->id, $course_id);
for ($i = 1 ; $i < = $nb_answers ; ++$i) {
$renderer->setElementTemplate('< td > <!-- BEGIN error --> < span class = "form_error" > {error}< / span > <!-- END error --> < br / > {element}< / td > ', 'correct['.$i.']');
$renderer->setElementTemplate('< td > <!-- BEGIN error --> < span class = "form_error" > {error}< / span > <!-- END error --> < br / > {element}< / td > ', 'counter['.$i.']');
$renderer->setElementTemplate('< td > <!-- BEGIN error --> < span class = "form_error" > {error}< / span > <!-- END error --> < br / > {element}< / td > ', 'answer['.$i.']');
$renderer->setElementTemplate('< td > <!-- BEGIN error --> < span class = "form_error" > {error}< / span > <!-- END error --> < br / > {element}< / td > ', 'comment['.$i.']');
$answer_number=$form->addElement('text', 'counter['.$i.']',null,'value="'.$i.'"');
$answer_number->freeze();
if (is_object($answer)) {
$defaults['answer['.$i.']'] = $answer -> answer[$i];
$defaults['comment['.$i.']'] = $answer -> comment[$i];
//$defaults['weighting['.$i.']'] = float_format($answer -> weighting[$i], 1);
$correct = $answer->correct[$i];
$defaults['correct['.$i.']'] = $correct;
$j = 1;
if (!empty($option_data)) {
foreach ($option_data as $id=>$data) {
$form->addElement('radio', 'correct['.$i.']', null, null, $id);
$j++;
if ($j == 3) {
break;
}
}
}
} else {
$form->addElement('radio', 'correct['.$i.']', null, null, 1);
$form->addElement('radio', 'correct['.$i.']', null, null, 2);
$defaults['answer['.$i.']'] = '';
$defaults['comment['.$i.']'] = '';
$defaults['correct['.$i.']'] = '';
}
//$form->addElement('select', 'correct['.$i.']',null, $this->options, array('id'=>$i,'onchange'=>'multiple_answer_true_false_onchange(this)'));
$boxes_names[] = 'correct['.$i.']';
$form->addElement('html_editor', 'answer['.$i.']',null, 'style="vertical-align:middle"', array('ToolbarSet' => 'TestProposedAnswer', 'Width' => '100%', 'Height' => '100'));
$form->addRule('answer['.$i.']', get_lang('ThisFieldIsRequired'), 'required');
// show comment when feedback is enable
if ($obj_ex->selectFeedbackType() != EXERCISE_FEEDBACK_TYPE_EXAM) {
$form->addElement('html_editor', 'comment['.$i.']',null, 'style="vertical-align:middle"', array('ToolbarSet' => 'TestProposedAnswer', 'Width' => '100%', 'Height' => '100'));
}
$form->addElement ('html', '< / tr > ');
}
$form->addElement('html', '< / table > ');
$form->addElement('html', '< br / > ');
$form->addElement('html', '< table > < tr > < td > < / td > < td > '.get_lang('Correct').'< / td > < td > '.get_lang('Wrong').'< / td > < td > '.get_lang('DoubtScore').'< / td > < / tr > ');
$renderer->setElementTemplate('< tr > < td > < span class = "form_required" > *< / span > '.get_lang('Score').' < / td > < td > {element} < br / > <!-- BEGIN error --> < span class = "form_error" > {error}< / span > <!-- END error --> < / td > ', 'option[1]');
$renderer->setElementTemplate('< td > {element} < br / > <!-- BEGIN error --> < span class = "form_error" > {error}< / span > <!-- END error --> < / td > ', 'option[2]');
$renderer->setElementTemplate('< td > {element} < br / > <!-- BEGIN error --> < span class = "form_error" > {error}< / span > <!-- END error --> < / td > ', 'option[3]');
// 3 scores
$form->addElement('text', 'option[1]', get_lang('Correct'), array('class'=>'span1','value'=>'1'));
$form->addElement('text', 'option[2]', get_lang('Wrong'), array('class'=>'span1','value'=>'-0.5'));
$form->addElement('text', 'option[3]', get_lang('DoubtScore'),array('class'=>'span1','value'=>'0'));
$form->addRule('option[1]', get_lang('ThisFieldIsRequired'), 'required');
$form->addRule('option[2]', get_lang('ThisFieldIsRequired'), 'required');
$form->addRule('option[3]', get_lang('ThisFieldIsRequired'), 'required');
$form -> addElement ('html', '< / tr > < table > ');
$form -> addElement('hidden', 'options_count', 3);
$form -> addElement ('html', '< / table > < br / > < br / > ');
//Extra values True, false, Dont known
if (!empty($this->extra)) {
$scores = explode(':',$this->extra);
if (!empty($scores)) {
for ($i = 1; $i < =3; $i++) {
$defaults['option['.$i.']'] = $scores[$i-1];
}
}
}
//$form -> add_multiple_required_rule ($boxes_names , get_lang('ChooseAtLeastOneCheckbox') , 'multiple_required');
$navigator_info = api_get_navigator();
global $text, $class;
if ($obj_ex->edit_exercise_in_lp == true) {
//ie6 fix
if ($navigator_info['name']=='Internet Explorer' & & $navigator_info['version']=='6') {
$form->addElement('submit', 'lessAnswers', get_lang('LessAnswer'),'class="btn minus"');
$form->addElement('submit', 'moreAnswers', get_lang('PlusAnswer'),'class="btn plus"');
$form->addElement('submit', 'submitQuestion',$text, 'class="'.$class.'"');
} else {
// setting the save button here and not in the question class.php
$form->addElement('style_submit_button', 'lessAnswers', get_lang('LessAnswer'),'class="btn minus"');
$form->addElement('style_submit_button', 'moreAnswers', get_lang('PlusAnswer'),'class="btn plus"');
$form->addElement('style_submit_button', 'submitQuestion',$text, 'class="'.$class.'"');
}
}
$renderer->setElementTemplate('{element} ','lessAnswers');
$renderer->setElementTemplate('{element} ','submitQuestion');
$renderer->setElementTemplate('{element} ','moreAnswers');
$form -> addElement ('html', '< / div > < / div > ');
$defaults['correct'] = $correct;
if (!empty($this -> id)) {
$form -> setDefaults($defaults);
} else {
//if ($this -> isContent == 1) {
$form -> setDefaults($defaults);
//}
}
$form->setConstants(array('nb_answers' => $nb_answers));
}
/**
* abstract function which creates the form to create / edit the answers of the question
* @param the formvalidator instance
* @param the answers number to display
*/
function processAnswersCreation($form) {
$questionWeighting = $nbrGoodAnswers = 0;
$objAnswer = new Answer($this->id);
$nb_answers = $form->getSubmitValue('nb_answers');
$options_count = $form->getSubmitValue('options_count');
$course_id = api_get_course_int_id();
$correct = array();
$options = Question::readQuestionOption($this->id, $course_id);
if (!empty($options)) {
foreach ($options as $option_data) {
$id = $option_data['id'];
unset($option_data['id']);
Question::updateQuestionOption($id, $option_data, $course_id);
}
} else {
for ($i=1 ; $i < = 3 ; $i++) {
$last_id = Question::saveQuestionOption($this->id, $this->options[$i], $course_id, $i);
$correct[$i] = $last_id;
}
}
//Getting quiz_question_options (true, false, doubt) because it's possible that there are more options in the future
$new_options = Question::readQuestionOption($this->id, $course_id);
$sorted_by_position = array();
foreach($new_options as $item) {
$sorted_by_position[$item['position']] = $item;
}
//Saving quiz_question.extra values that has the correct scores of the true, false, doubt options registered in this format XX:YY:ZZZ where XX is a float score value
$extra_values = array();
for ($i=1 ; $i < = 3 ; $i++) {
$score = trim($form -> getSubmitValue('option['.$i.']'));
$extra_values[]= $score;
}
$this->setExtra(implode(':',$extra_values));
for ($i=1 ; $i < = $nb_answers ; $i++) {
$answer = trim($form -> getSubmitValue('answer['.$i.']'));
$comment = trim($form -> getSubmitValue('comment['.$i.']'));
$goodAnswer = trim($form -> getSubmitValue('correct['.$i.']'));
if (empty($options)) {
//If this is the first time that the question is created when change the default values from the form 1 and 2 by the correct "option id" registered
$goodAnswer = $sorted_by_position[$goodAnswer]['id'];
}
$questionWeighting += $extra_values[0]; //By default 0 has the correct answers
$objAnswer->createAnswer($answer, $goodAnswer, $comment,'',$i);
}
// saves the answers into the data base
$objAnswer -> save();
// sets the total weighting of the question
$this -> updateWeighting($questionWeighting);
$this -> save();
}
function return_header($feedback_type = null, $counter = null, $score = null) {
$header = parent::return_header($feedback_type, $counter, $score);
$header .= '< table class = "'.$this->question_table_class .'" >
< tr >
< th > '.get_lang("Choice").'< / th >
< th > '. get_lang("ExpectedChoice").'< / th >
< th > '. get_lang("Answer").'< / th > ';
if ($feedback_type != EXERCISE_FEEDBACK_TYPE_EXAM) {
$header .= '< th > '.get_lang("Comment").'< / th > ';
} else {
$header .= '< th > < / th > ';
}
$header .= '< / tr > ';
return $header;
}
}
endif;
