*/
class MatchingDraggable extends Question
{
public static $typePicture = 'matchingdrag.png';
static $explanationLangVar = 'MatchingDraggable';
/**
* Class constructor
*/
public function __construct()
{
parent::__construct();
$this->type = MATCHING_DRAGGABLE;
$this->isContent = $this->getIsContent();
}
/**
* function which redefines Question::createAnswersForm
* @param FormValidator $form
*/
public function createAnswersForm($form)
{
$defaults = array();
$nb_matches = $nb_options = 2;
$matches = array();
$answer = null;
$counter = 1;
if (isset($this->id)) {
$answer = new Answer($this->id);
$answer->read();
if (count($answer->nbrAnswers) > 0) {
for ($i = 1; $i <= $answer->nbrAnswers; $i++) {
$correct = $answer->isCorrect($i);
if (empty($correct)) {
$matches[$answer->selectAutoId($i)] = chr(64 + $counter);
$counter++;
}
}
}
}
if ($form->isSubmitted()) {
$nb_matches = $form->getSubmitValue('nb_matches');
$nb_options = $form->getSubmitValue('nb_options');
if (isset($_POST['lessOptions'])) {
$nb_matches--;
$nb_options--;
}
if (isset($_POST['moreOptions'])) {
$nb_matches++;
$nb_options++;
}
} else if (!empty($this->id)) {
if (count($answer->nbrAnswers) > 0) {
$nb_matches = $nb_options = 0;
for ($i = 1; $i <= $answer->nbrAnswers; $i++) {
if ($answer->isCorrect($i)) {
$nb_matches++;
$defaults['answer[' . $nb_matches . ']'] = $answer->selectAnswer($i);
$defaults['weighting[' . $nb_matches . ']'] = float_format($answer->selectWeighting($i), 1);
$defaults['matches[' . $nb_matches . ']'] = $answer->correct[$i];
} else {
$nb_options++;
$defaults['option[' . $nb_options . ']'] = $answer->selectAnswer($i);
}
}
}
} else {
$defaults['answer[1]'] = get_lang('DefaultMakeCorrespond1');
$defaults['answer[2]'] = get_lang('DefaultMakeCorrespond2');
$defaults['matches[2]'] = '2';
$defaults['option[1]'] = get_lang('DefaultMatchingOptA');
$defaults['option[2]'] = get_lang('DefaultMatchingOptB');
}
if (empty($matches)) {
for ($i = 1; $i <= $nb_options; ++$i) {
// fill the array with A, B, C.....
$matches[$i] = chr(64 + $i);
}
} else {
for ($i = $counter; $i <= $nb_options; ++$i) {
// fill the array with A, B, C.....
$matches[$i] = chr(64 + $i);
}
}
$form->addElement('hidden', 'nb_matches', $nb_matches);
$form->addElement('hidden', 'nb_options', $nb_options);
// DISPLAY MATCHES
$html = '
| ' . get_lang('Number') . ' |
' . get_lang('Answer') . ' |
' . get_lang('MatchesTo') . ' |
' . get_lang('Weighting') . ' |
';
$form->addHeader(get_lang('MakeCorrespond'));
$form->addHtml($html);
if ($nb_matches < 1) {
$nb_matches = 1;
Display::display_normal_message(get_lang('YouHaveToCreateAtLeastOneAnswer'));
}
for ($i = 1; $i <= $nb_matches; ++$i) {
$renderer = &$form->defaultRenderer();
$renderer->setElementTemplate(
'{error}{element} | ',
"answer[$i]"
);
$renderer->setElementTemplate(
'{error}{element} | ',
"matches[$i]"
);
$renderer->setElementTemplate(
'{error}{element} | ',
"weighting[$i]"
);
$form->addHtml('');
$form->addHtml("| $i | ");
$form->addText("answer[$i]", null);
$form->addSelect("matches[$i]", null, $matches);
$form->addText("weighting[$i]", null, true, ['style' => 'width: 60px;', 'value' => 10]);
$form->addHtml('
');
}
$form->addHtml('
');
$group = array();
$form->addGroup($group);
// DISPLAY OPTIONS
$html = '
| ' . get_lang('Number') . ' |
' . get_lang('Answer') . ' |
';
$form->addHtml($html);
if ($nb_options < 1) {
$nb_options = 1;
Display::display_normal_message(get_lang('YouHaveToCreateAtLeastOneAnswer'));
}
for ($i = 1; $i <= $nb_options; ++$i) {
$renderer = &$form->defaultRenderer();
$renderer->setElementTemplate(
'{error}{element} | ',
"option[$i]"
);
$form->addHtml('');
$form->addHtml('| ' . chr(64 + $i) . ' | ');
$form->addText("option[$i]", null);
$form->addHtml('
');
}
$form->addHtml('
');
$group = array();
global $text;
// setting the save button here and not in the question class.php
$group[] = $form->addButtonDelete(get_lang('DelElem'), 'lessOptions', true);
$group[] = $form->addButtonCreate(get_lang('AddElem'), 'moreOptions', true);
$group[] = $form->addButtonSave($text, 'submitQuestion', true);
$form->addGroup($group);
if (!empty($this->id)) {
$form->setDefaults($defaults);
} else {
if ($this->isContent == 1) {
$form->setDefaults($defaults);
}
}
$form->setConstants(
array(
'nb_matches' => $nb_matches,
'nb_options' => $nb_options
)
);
}
/**
* Process the creation of answers
* @param FormValidator $form
*/
public function processAnswersCreation($form)
{
$nb_matches = $form->getSubmitValue('nb_matches');
$nb_options = $form->getSubmitValue('nb_options');
$this->weighting = 0;
$position = 0;
$objAnswer = new Answer($this->id);
// Insert the options
for ($i = 1; $i <= $nb_options; ++$i) {
$position++;
$option = $form->getSubmitValue("option[$i]");
$objAnswer->createAnswer($option, 0, '', 0, $position);
}
// Insert the answers
for ($i = 1; $i <= $nb_matches; ++$i) {
$position++;
$answer = $form->getSubmitValue("answer[$i]");
$matches = $form->getSubmitValue("matches[$i]");
$weighting = $form->getSubmitValue("weighting[$i]");
$this->weighting += $weighting;
$objAnswer->createAnswer(
$answer,
$matches,
'',
$weighting,
$position
);
}
$objAnswer->save();
$this->save();
}
/**
* Shows question title an description
* @param string $feedback_type
* @param int $counter
* @param float $score
* @return string The header HTML code
*/
public function return_header($feedback_type = null, $counter = null, $score = null)
{
$header = parent::return_header($feedback_type, $counter, $score);
$header .= '
| ' . get_lang('ElementList') . ' |
' . get_lang('CorrespondsTo') . ' |
';
return $header;
}
}