/**
* Unmarshall a DOMElement object corresponding to an XHTML img element.
*
* @param \DOMElement $element A DOMElement object.
* @return \qtism\data\QtiComponent n Img object.
* @throws \qtism\data\storage\xml\marshalling\UnmarshallingException
*/
protected function unmarshall(DOMElement $element)
{
if (($src = self::getDOMElementAttributeAs($element, 'src')) !== null) {
if (($alt = self::getDOMElementAttributeAs($element, 'alt')) === null) {
// The XSD does not force the 'alt' attribute to be non-empty,
// thus we consider the 'alt' attribute value as an empty string ('').
$alt = '';
}
$component = new Img($src, $alt);
if (($longdesc = self::getDOMElementAttributeAs($element, 'longdesc')) !== null) {
$component->setLongdesc($longdesc);
}
if (($height = self::getDOMElementAttributeAs($element, 'height', 'string')) !== null) {
if (stripos($height, '%') === false) {
$component->setHeight(intval($height));
} else {
$component->setHeight($height);
}
}
if (($width = self::getDOMElementAttributeAs($element, 'width', 'string')) !== null) {
if (stripos($width, '%') === false) {
$component->setWidth(intval($width));
} else {
$component->setWidth($width);
}
}
if (($xmlBase = self::getXmlBase($element)) !== false) {
$component->setXmlBase($xmlBase);
}
$this->fillBodyElement($component, $element);
return $component;
} else {
$msg = "The 'mandatory' attribute 'src' is missing from element 'img'.";
throw new UnmarshallingException($msg, $element);
}
}
public function testMarshall()
{
$img = new Img('my/image.png', "An Image...", "my-img");
$img->setClass('beautiful');
$img->setHeight('40%');
$img->setWidth(30);
$img->setLang('en-YO');
$img->setLongdesc("A Long Description...");
$marshaller = $this->getMarshallerFactory()->createMarshaller($img);
$element = $marshaller->marshall($img);
$dom = new DOMDocument('1.0', 'UTF-8');
$element = $dom->importNode($element, true);
$this->assertEquals('<img src="my/image.png" alt="An Image..." width="30" height="40%" longdesc="A Long Description..." id="my-img" class="beautiful" xml:lang="en-YO"/>', $dom->saveXML($element));
}
