/**
* Removes the `btn-*` class names and adds the `btn-group` class.
*
* @inheritdoc
*/
protected function render_class(array $class_names)
{
return parent::render_class(array_filter($class_names, function ($class_name) {
return strpos($class_name, 'btn-') === false;
}, ARRAY_FILTER_USE_KEY) + ['btn-group' => true]);
}
protected function render_class(array $class_names)
{
return parent::render_class($class_names + ['dropdown-menu' => true]);
}
/**
* Removes the `btn-primary`, `btn-danger`, `btn-success` and `btn-info` class names and adds
* the `btn-group` class.
*/
protected function render_class(array $class_names)
{
return parent::render_class(['btn-primary' => false, 'btn-danger' => false, 'btn-success' => false, 'btn-info' => false] + $class_names + ['btn-group' => true]);
}