/**
* Marshall a CustomInteraction object into a DOMElement object.
*
* @param \qtism\data\QtiComponent $component A CustomInteraction object.
* @return \DOMElement The according DOMElement object.
*/
protected function marshall(QtiComponent $component)
{
$element = static::getDOMCradle()->createElement('customInteraction');
$this->fillElement($element, $component);
self::setDOMElementAttribute($element, 'responseIdentifier', $component->getResponseIdentifier());
if ($component->hasXmlBase() === true) {
self::setXmlBase($element, $component->getXmlBase());
}
$xml = $component->getXml();
Utils::importChildNodes($xml->documentElement, $element);
Utils::importAttributes($xml->documentElement, $element);
return $element;
}
/**
* @see \qtism\data\storage\xml\marshalling\RecursiveMarshaller::marshallChildrenKnown()
*/
protected function marshallChildrenKnown(QtiComponent $component, array $elements)
{
$element = self::getDOMCradle()->createElement($component->getQtiClassName());
foreach ($elements as $elt) {
$element->appendChild($elt);
}
if ($component instanceof CustomOperator) {
if ($component->hasClass() === true) {
self::setDOMElementAttribute($element, 'class', $component->getClass());
}
if ($component->hasDefinition() === true) {
self::setDOMElementAttribute($element, 'definition', $component->getDefinition());
}
// Now, we have to extract the LAX content of the custom operator and put it into
// what we are putting out. (It is possible to have no LAX content at all, it is not mandatory).
$xml = $component->getXml();
$operatorElt = $xml->documentElement->cloneNode(true);
$qtiOperatorElts = self::getChildElementsByTagName($operatorElt, array_merge(self::getOperators(), self::getExpressions()));
foreach ($qtiOperatorElts as $qtiOperatorElt) {
$operatorElt->removeChild($qtiOperatorElt);
}
Utils::importChildNodes($operatorElt, $element);
Utils::importAttributes($operatorElt, $element);
}
return $element;
}
