protected function unmarshallChildrenKnown(DOMElement $element, QtiComponentCollection $children)
{
if (($responseIdentifier = self::getDOMElementAttributeAs($element, 'responseIdentifier')) !== null) {
$fqClass = $this->lookupClass($element);
$component = new $fqClass($responseIdentifier, new SimpleChoiceCollection($children->getArrayCopy()));
if (($shuffle = self::getDOMElementAttributeAs($element, 'shuffle', 'boolean')) !== null) {
$component->setShuffle($shuffle);
}
if (($maxChoices = self::getDOMElementAttributeAs($element, 'maxChoices', 'integer')) !== null) {
if ($element->localName === 'orderInteraction') {
if ($maxChoices !== 0) {
$component->setMaxChoices($maxChoices);
}
} else {
$component->setMaxChoices($maxChoices);
}
}
if (($minChoices = self::getDOMElementAttributeAs($element, 'minChoices', 'integer')) !== null) {
if ($element->localName === 'orderInteraction') {
/*
* Lots of QTI implementations output minChoices = 0 while
* dealing with orderInteraction unmarshalling. However, regarding
* the IMS QTI Specification, it is invalid.
*
* "If specified, minChoices must be 1 or greater but must not exceed the
* number of choices available."
*
* See http://www.imsglobal.org/question/qtiv2p1/imsqti_infov2p1.html#element10283
*/
if ($minChoices !== 0) {
$component->setMinChoices($minChoices);
}
} else {
$component->setMinChoices($minChoices);
}
}
if (($orientation = self::getDOMElementAttributeAs($element, 'orientation')) !== null) {
$component->setOrientation(Orientation::getConstantByName($orientation));
}
if (($xmlBase = self::getXmlBase($element)) !== false) {
$component->setXmlBase($xmlBase);
}
$promptElts = self::getChildElementsByTagName($element, 'prompt');
if (count($promptElts) > 0) {
$promptElt = $promptElts[0];
$prompt = $this->getMarshallerFactory()->createMarshaller($promptElt)->unmarshall($promptElt);
$component->setPrompt($prompt);
}
self::fillBodyElement($component, $element);
return $component;
} else {
$msg = "The mandatory 'responseIdentifier' attribute is missing from the " . $element->localName . " element.";
throw new UnmarshallingException($msg, $element);
}
}
/**
* Unmarshall a DOMElement object corresponding to a SliderInteraction element.
*
* @param DOMElement $element A DOMElement object.
* @return QtiComponent A SliderInteraction object.
* @throws UnmarshallingException
*/
protected function unmarshall(DOMElement $element)
{
if (($responseIdentifier = self::getDOMElementAttributeAs($element, 'responseIdentifier')) !== null) {
if (($lowerBound = self::getDOMElementAttributeAs($element, 'lowerBound', 'float')) !== null) {
if (($upperBound = self::getDOMElementAttributeAs($element, 'upperBound', 'float')) !== null) {
$component = new SliderInteraction($responseIdentifier, $lowerBound, $upperBound);
$promptElts = self::getChildElementsByTagName($element, 'prompt');
if (count($promptElts) > 0) {
$promptElt = $promptElts[0];
$prompt = $this->getMarshallerFactory()->createMarshaller($promptElt)->unmarshall($promptElt);
$component->setPrompt($prompt);
}
if (($step = self::getDOMElementAttributeAs($element, 'step', 'integer')) !== null) {
$component->setStep($step);
}
if (($stepLabel = self::getDOMElementAttributeAs($element, 'stepLabel', 'boolean')) !== null) {
$component->setStepLabel($stepLabel);
}
if (($orientation = self::getDOMElementAttributeAs($element, 'orientation')) !== null) {
try {
$component->setOrientation(Orientation::getConstantByName($orientation));
} catch (InvalidArgumentException $e) {
$msg = "The value of the 'orientation' attribute of the 'sliderInteraction' is invalid.";
throw new UnmarshallingException($msg, $element, $e);
}
}
if (($reverse = self::getDOMElementAttributeAs($element, 'reverse', 'boolean')) !== null) {
$component->setReverse($reverse);
}
if (($xmlBase = self::getXmlBase($element)) !== false) {
$component->setXmlBase($xmlBase);
}
self::fillBodyElement($component, $element);
return $component;
} else {
$msg = "The mandatory 'upperBound' attribute is missing from the 'sliderInteraction' element.";
throw new UnmarshallingException($msg, $element);
}
} else {
$msg = "The mandatory 'lowerBound' attribute is missing from the 'sliderInteraction' element.";
throw new UnmarshallingException($msg, $element);
}
} else {
$msg = "The mandatory 'responseIdentifier' attribute is missing from the 'sliderInteraction' element.";
throw new UnmarshallingException($msg, $element);
}
}
