private function buildOptionValue(\DOMElement $node)
{
$option = array();
$defaultDefaultValue = 'select' === $this->node->nodeName ? '' : 'on';
$defaultValue = isset($node->nodeValue) && !empty($node->nodeValue) ? $node->nodeValue : $defaultDefaultValue;
$option['value'] = $node->hasAttribute('value') ? $node->getAttribute('value') : $defaultValue;
$option['disabled'] = $node->hasAttribute('disabled');
return $option;
}