Chamilo is a learning management system focused on ease of use and accessibility
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chamilo-lms/main/exercice/multiple_answer_combination...

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<?php // $Id: document.php 16494 2008-10-10 22:07:36Z yannoo $
/* For licensing terms, see /chamilo_license.txt */
/**
* File containing the MultipleAnswer class.
* @package dokeos.exercise
* @author Eric Marguin
* @version $Id: admin.php 10680 2007-01-11 21:26:23Z pcool $
*/
if(!class_exists('MultipleAnswerCombination')):
/**
CLASS MultipleAnswer
*
* This class allows to instantiate an object of type MULTIPLE_ANSWER (MULTIPLE CHOICE, MULTIPLE ANSWER),
* extending the class question
*
* @author Eric Marguin
* @package dokeos.exercise
**/
class MultipleAnswerCombination extends Question {
static $typePicture = 'mcmac.gif';
static $explanationLangVar = 'MultipleSelectCombination';
/**
* Constructor
*/
function MultipleAnswerCombination(){
parent::question();
$this -> type = MULTIPLE_ANSWER_COMBINATION;
$this -> isContent = $this-> getIsContent();
}
/**
* function which redifines Question::createAnswersForm
* @param the formvalidator instance
* @param the answers number to display
*/
function createAnswersForm ($form) {
$nb_answers = isset($_POST['nb_answers']) ? $_POST['nb_answers'] : 2;
$nb_answers += (isset($_POST['lessAnswers']) ? -1 : (isset($_POST['moreAnswers']) ? 1 : 0));
$obj_ex = $_SESSION['objExercise'];
/*
*
* <th>
'.get_lang('Weighting').'
</th>
*/
$html='
<div class="row">
<div class="label">
'.get_lang('Answers').'<br /><img src="../img/fill_field.png">
</div>
<div class="formw">
<table class="data_table">
<tr style="text-align: center;">
<th>
'.get_lang('Number').'
</th>
<th>
'.get_lang('True').'
</th>
<th>
'.get_lang('Answer').'
</th>';
// show column comment when feedback is enable
if ($obj_ex->selectFeedbackType() != EXERCISE_FEEDBACK_TYPE_EXAM ) {
$html .='<th>'.get_lang('Comment').'</th>';
}
$html .= '</tr>';
$form -> addElement ('html', $html);
$defaults = array();
$correct = 0;
if(!empty($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) {
$nb_answers = 1;
Display::display_normal_message(get_lang('YouHaveToCreateAtLeastOneAnswer'));
}
for($i = 1 ; $i <= $nb_answers ; ++$i) {
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);
$defaults['correct['.$i.']'] = $answer -> correct[$i];
} else {
$defaults['answer[1]'] = get_lang('langDefaultMultipleAnswer2');
$defaults['comment[1]'] = get_lang('langDefaultMultipleComment2');
$defaults['correct[1]'] = true;
$defaults['weighting[1]'] = 10;
$defaults['answer[2]'] = get_lang('langDefaultMultipleAnswer1');
$defaults['comment[2]'] = get_lang('langDefaultMultipleComment1');
$defaults['correct[2]'] = false;
//$defaults['weighting[2]'] = -5;
}
$renderer = & $form->defaultRenderer();
$renderer->setElementTemplate('<td><!-- BEGIN error --><span class="form_error">{error}</span><!-- END error --><br/>{element}</td>');
$answer_number=$form->addElement('text', null,null,'value="'.$i.'"');
$answer_number->freeze();
$form->addElement('checkbox', 'correct['.$i.']', null, null, 'class="checkbox" style="margin-left: 0em;"');
$boxes_names[] = 'correct['.$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');
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'));
}
//only 1 answer the all deal ...
//$form->addElement('text', 'weighting['.$i.']',null, 'style="vertical-align:middle;margin-left: 0em;" size="5" value="10"');
$form -> addElement ('html', '</tr>');
}
$form -> addElement ('html', '</table>');
$form -> addElement ('html', '<br />');
$form -> add_multiple_required_rule ($boxes_names , get_lang('ChooseAtLeastOneCheckbox') , 'multiple_required');
$html_total_score ='<div style="margin-bottom:2px;">'.get_lang('Score').'</div>';
$form -> addElement ('html', $html_total_score);
//only 1 answer the all deal ...
$form->addElement('text', 'weighting[1]',null, 'style="vertical-align:middle;margin-left: 0em;" size="5" value="10"');
$form -> addElement ('html', '<br /><br />');
$navigator_info = api_get_navigator();
global $text, $class, $show_quiz_edition;
//ie6 fix
if ($show_quiz_edition) {
if ($navigator_info['name']=='Internet Explorer' && $navigator_info['version']=='6') {
$form->addElement('submit', 'lessAnswers', get_lang('LessAnswer'),'class="minus"');
$form->addElement('submit', 'moreAnswers', get_lang('PlusAnswer'),'class="plus"');
$form->addElement('submit','submitQuestion',$text, 'class="'.$class.'"');
} else {
$form->addElement('style_submit_button', 'lessAnswers', get_lang('LessAnswer'),'class="minus"');
$form->addElement('style_submit_button', 'moreAnswers', get_lang('PlusAnswer'),'class="plus"');
// setting the save button here and not in the question class.php
$form->addElement('style_submit_button','submitQuestion',$text, 'class="'.$class.'"');
}
}
$renderer->setElementTemplate('{element}&nbsp;','lessAnswers');
$renderer->setElementTemplate('{element}&nbsp;','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 = $form -> getSubmitValue('nb_answers');
for($i=1 ; $i <= $nb_answers ; $i++)
{
$answer = trim($form -> getSubmitValue('answer['.$i.']'));
$comment = trim($form -> getSubmitValue('comment['.$i.']'));
if ($i == 1)
$weighting = trim($form -> getSubmitValue('weighting['.$i.']'));
else {
$weighting = 0;
}
$goodAnswer = trim($form -> getSubmitValue('correct['.$i.']'));
if($goodAnswer){
$weighting = abs($weighting);
} else {
$weighting = abs($weighting);
// $weighting = -$weighting;
}
if($weighting > 0)
{
$questionWeighting += $weighting;
}
$objAnswer -> createAnswer($answer,$goodAnswer,$comment,$weighting,$i);
}
// saves the answers into the data base
$objAnswer -> save();
// sets the total weighting of the question
$this -> updateWeighting($questionWeighting);
$this -> save();
}
}
endif;
?>