*/
class Draggable extends Question
{
public $typePicture = 'ordering.png';
public $explanationLangVar = 'Draggable';
/**
* Class constructor.
*/
public function __construct()
{
parent::__construct();
$this->type = DRAGGABLE;
$this->isContent = $this->getIsContent();
}
/**
* {@inheritdoc}
*/
public function createAnswersForm($form)
{
$defaults = [];
$nb_matches = $nb_options = 2;
$matches = [];
$answer = null;
if ($form->isSubmitted()) {
$nb_matches = $form->getSubmitValue('nb_matches');
$nb_options = $form->getSubmitValue('nb_options');
if (isset($_POST['lessMatches'])) {
$nb_matches--;
}
if (isset($_POST['moreMatches'])) {
$nb_matches++;
}
if (isset($_POST['lessOptions'])) {
$nb_options--;
}
if (isset($_POST['moreOptions'])) {
$nb_options++;
}
} elseif (!empty($this->id)) {
$defaults['orientation'] = in_array($this->extra, ['h', 'v']) ? $this->extra : 'h';
$answer = new Answer($this->id);
$answer->read();
if ($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);
$answerInfo = $answer->getAnswerByAutoId($answer->correct[$i]);
$defaults['matches['.$nb_matches.']'] = isset($answerInfo['answer']) ? $answerInfo['answer'] : '';
} else {
$nb_options++;
$defaults['option['.$nb_options.']'] = $answer->selectAnswer($i);
}
}
}
} else {
$defaults['answer[1]'] = get_lang('First step');
$defaults['answer[2]'] = get_lang('Second step');
$defaults['matches[2]'] = '2';
$defaults['option[1]'] = get_lang('Note down the address');
$defaults['option[2]'] = get_lang('Contact the emergency services');
$defaults['orientation'] = 'h';
}
for ($i = 1; $i <= $nb_matches; $i++) {
$matches[$i] = $i;
}
$form->addElement('hidden', 'nb_matches', $nb_matches);
$form->addElement('hidden', 'nb_options', $nb_options);
$form->addRadio(
'orientation',
get_lang('Choose orientation'),
['h' => get_lang('Horizontal'), 'v' => get_lang('Vertical')]
);
// DISPLAY MATCHES
$html = '
| '.get_lang('Answer').' |
'.get_lang('Matches To').' |
'.get_lang('Score').' |
';
$form->addHeader(get_lang('Match them'));
$form->addHtml($html);
if ($nb_matches < 1) {
$nb_matches = 1;
echo Display::return_message(get_lang('You have to create at least one answer'), 'normal');
}
for ($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('');
$form->addText("answer[$i]", null);
$form->addSelect("matches[$i]", null, $matches);
$form->addText("weighting[$i]", null, true, ['value' => 10, 'style' => 'width: 60px;']);
$form->addHtml('
');
}
$form->addHtml('
');
$renderer->setElementTemplate(
'', 'moreMatches');
global $text;
$group = [
$form->addButtonDelete(get_lang('Remove element'), 'lessMatches', true),
$form->addButtonCreate(get_lang('Add element'), 'moreMatches', true),
$form->addButtonSave($text, 'submitQuestion', true),
];
$form->addGroup($group);
if (!empty($this->id)) {
$form->setDefaults($defaults);
} else {
$form->setDefaults(['orientation' => 'h']);
if ($this->isContent == 1) {
$form->setDefaults($defaults);
}
}
$form->setConstants(
[
'nb_matches' => $nb_matches,
'nb_options' => $nb_options,
]
);
}
/**
* {@inheritdoc}
*/
public function processAnswersCreation($form, $exercise)
{
$this->extra = $form->exportValue('orientation');
$nb_matches = $form->getSubmitValue('nb_matches');
$this->weighting = 0;
$position = 0;
$objAnswer = new Answer($this->id);
// Insert the options
for ($i = 1; $i <= $nb_matches; $i++) {
$position++;
$objAnswer->createAnswer($position, 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();
$this->save($exercise);
}
/**
* {@inheritdoc}
*/
public function return_header(Exercise $exercise, $counter = null, $score = [])
{
$header = parent::return_header($exercise, $counter, $score);
$header .= '';
if ($exercise->showExpectedChoice()) {
$header .= '| '.get_lang('Your choice').' | ';
if ($exercise->showExpectedChoiceColumn()) {
$header .= ''.get_lang('Expected choice').' | ';
}
} else {
$header .= ''.get_lang('Elements list').' | ';
}
$header .= ''.get_lang('Status').' | ';
$header .= '
';
return $header;
}
}