/**
* Converts the datalist to html code.
*
* @param string $prepend Optional string prepended to html content
* @param string $append Optional string appended to html content
*
* @return string
*/
public function toHtml($prepend = '', $append = '')
{
//Do not print empty datalists
if (!$this->count() && strlen($prepend . $append) === 0) {
return '';
}
return parent::toHtml($prepend, $append);
}
/**
* {@inheritdoc}
*/
public function offsetSet($offset, $value)
{
//Add the child to the parent
if ($this->parent) {
$this->parent->offsetSet($offset, $value);
}
//Add child to itself
parent::offsetSet($offset, $value);
}
/**
* {@inheritdoc}
*/
public function html($html = null)
{
if ($html !== null) {
parent::html($html);
}
$html = '';
//render the options not belonging to optgroups
foreach ($this->children as $option) {
if ($option->getParent() === $this) {
$html .= (string) $option;
}
}
//render the optgroups
if (!empty($this->optgroups)) {
foreach ($this->optgroups as $optgroup) {
$html .= (string) $optgroup;
}
}
return $html;
}
/**
* {@inheritdoc}
*
* @see ElementContainer::toHtml
*/
protected function defaultRender($prepend = '', $append = '')
{
return parent::toHtml($prepend, $append);
}
