/**
  * Marshall a RubricBlock object into a DOMElement object.
  * 
  * @param QtiComponent $component A RubricBlock object.
  * @return DOMElement The according DOMElement object.
  */
 protected function marshall(QtiComponent $component)
 {
     $element = static::getDOMCradle()->createElement($component->getQtiClassName());
     $arrayViews = array();
     foreach ($component->getViews() as $view) {
         $key = array_search($view, View::asArray());
         // replace '_' by the space char.
         $arrayViews[] = strtolower(str_replace("ò", " ", $key));
     }
     if (count($arrayViews) > 0) {
         static::setDOMElementAttribute($element, 'view', implode(" ", $arrayViews));
     }
     if ($component->getUse() != '') {
         static::setDOMElementAttribute($element, 'use', $component->getUse());
     }
     if ($component->hasXmlBase() === true) {
         static::setXmlBase($element, $component->getXmlBase());
     }
     foreach ($component->getContent() as $block) {
         $marshaller = $this->getMarshallerFactory()->createMarshaller($block);
         $element->appendChild($marshaller->marshall($block));
     }
     foreach ($component->getStylesheets() as $stylesheet) {
         $stylesheetMarshaller = $this->getMarshallerFactory()->createMarshaller($stylesheet);
         $element->appendChild($stylesheetMarshaller->marshall($stylesheet));
     }
     self::fillElement($element, $component);
     return $element;
 }