/**
* Unmarshall a DOMElement object corresponding to a DrawingInteraction element.
*
* @param DOMElement $element A DOMElement object.
* @return QtiComponent A DrawingInteraction object.
* @throws UnmarshallingException
*/
protected function unmarshall(DOMElement $element)
{
if (($responseIdentifier = self::getDOMElementAttributeAs($element, 'responseIdentifier')) !== null) {
$objectElts = self::getChildElementsByTagName($element, 'object');
if (count($objectElts) > 0) {
$objectElt = $objectElts[0];
$object = $this->getMarshallerFactory()->createMarshaller($objectElt)->unmarshall($objectElt);
$component = new DrawingInteraction($responseIdentifier, $object);
$promptElts = self::getChildElementsByTagName($element, 'prompt');
if (count($promptElts) > 0) {
$promptElt = $promptElts[0];
$prompt = $this->getMarshallerFactory()->createMarshaller($promptElt)->unmarshall($promptElt);
$component->setPrompt($prompt);
}
if (($xmlBase = self::getXmlBase($element)) !== false) {
$component->setXmlBase($xmlBase);
}
self::fillBodyElement($component, $element);
return $component;
} else {
$msg = "A 'drawingInteraction' element must contain exactly one 'object' element, none given.";
throw new UnmarshallingException($msg, $element);
}
} else {
$msg = "The mandatory 'responseIdentifier' attribute is missing from the 'drawingInteraction' element.";
throw new UnmarshallingException($msg, $element);
}
}
