/**
* {@inheritdoc}
*/
public function preprocessElement(Element $element, Variables $variables)
{
$element->map(['id', 'name', 'value', 'type']);
// Autocomplete.
if ($route = $element->getProperty('autocomplete_route_name')) {
$variables['autocomplete'] = TRUE;
}
// Create variables for #input_group and #input_group_button flags.
$variables['input_group'] = $element->getProperty('input_group') || $element->getProperty('input_group_button');
// Map the element properties.
$variables->map(['attributes' => 'attributes', 'icon' => 'icon', 'field_prefix' => 'prefix', 'field_suffix' => 'suffix', 'type' => 'type']);
// Ensure attributes are proper objects.
$this->preprocessAttributes();
}
