public function label_button($cfg, $force = false)
{
$this->record('label_button', $cfg);
$cont = new element('div');
$ele = $this->button($cfg, 1);
// Submit by default!
if ($this->_root_element && !is_string($ele->attr('type'))) {
$ele->attr('type', 'submit');
}
$cont->add_class(self::$field_class)->append($ele);
$label = $this->label(' ');
$this->append($label)->append($cont);
return $this->_chainable && !$force ? $this : [$label, $cont];
}