public function convert(BaseQuestionType $questionType, $interactionIdentifier, $interactionLabel)
{
/** @var mcq $question */
$question = $questionType;
// Build <choiceInteraction>
$valueIdentifierMap = [];
$simpleChoiceCollection = new SimpleChoiceCollection();
foreach ($question->get_options() as $index => $option) {
/** @var mcq_options_item $option */
$choiceContent = new FlowStaticCollection();
foreach (QtiMarshallerUtil::unmarshallElement($option->get_label()) as $component) {
$choiceContent->attach($component);
}
// Use option['value'] as choice `identifier` if it has the correct format,
// Otherwise, generate a valid using index such `CHOICE_1`, `CHOICE_2`, etc
$originalOptionValue = $option->get_value();
$choiceIdentifier = Format::isIdentifier($originalOptionValue, false) ? $originalOptionValue : 'CHOICE_' . $index;
// Store this reference in a map
$valueIdentifierMap[$originalOptionValue] = $choiceIdentifier;
$choice = new SimpleChoice($choiceIdentifier);
$choice->setContent($choiceContent);
$simpleChoiceCollection->attach($choice);
}
// Build final interaction and its corresponding <responseDeclaration>, and its <responseProcessingTemplate>
$interaction = new ChoiceInteraction($interactionIdentifier, $simpleChoiceCollection);
$interaction->setLabel($interactionLabel);
$interaction->setMinChoices(1);
$interaction->setMaxChoices($question->get_multiple_responses() ? $simpleChoiceCollection->count() : 1);
// Build the prompt
$interaction->setPrompt($this->convertStimulusForPrompt($question->get_stimulus()));
// Set shuffle options
$interaction->setShuffle($question->get_shuffle_options() ? true : false);
// Set the layout
if ($question->get_ui_style() instanceof mcq_ui_style && $question->get_ui_style()->get_type() === 'horizontal' && intval($question->get_ui_style()->get_columns()) === count($question->get_options())) {
$interaction->setOrientation(Orientation::HORIZONTAL);
} else {
$interaction->setOrientation(Orientation::VERTICAL);
LogService::log('ui_style` is ignored and `choiceInteraction` is assumed and set as `vertical`');
}
if (empty($question->get_validation())) {
return [$interaction, null, null];
}
$builder = new McqValidationBuilder($question->get_multiple_responses(), $valueIdentifierMap);
list($responseDeclaration, $responseProcessing) = $builder->buildValidation($interactionIdentifier, $question->get_validation());
return [$interaction, $responseDeclaration, $responseProcessing];
}
