/**
  * Returns a readonly span containing the correct value.
  *
  * @param array $properties
  *
  * @return string
  */
 public function Field($properties = array())
 {
     $source = ArrayLib::flatten($this->getSource());
     $values = $this->getValueArray();
     // Get selected values
     $mapped = array();
     foreach ($values as $value) {
         if (isset($source[$value])) {
             $mapped[] = $source[$value];
         }
     }
     // Don't check if string arguments are matching against the source,
     // as they might be generated HTML diff views instead of the actual values
     if ($this->value && is_string($this->value) && empty($mapped)) {
         $mapped = array(trim($this->value));
         $values = array();
     }
     if ($mapped) {
         $attrValue = implode(', ', array_values($mapped));
         $attrValue = Convert::raw2xml($attrValue);
         $inputValue = implode(', ', array_values($values));
     } else {
         $attrValue = '<i>(' . _t('FormField.NONE', 'none') . ')</i>';
         $inputValue = '';
     }
     $properties = array_merge($properties, array('AttrValue' => DBField::create_field('HTMLFragment', $attrValue), 'InputValue' => $inputValue));
     return parent::Field($properties);
 }
 public function getAttributes()
 {
     return array_merge(parent::getAttributes(), array('multiple' => 'true', 'size' => $this->getSize(), 'name' => $this->getName() . '[]'));
 }