/**
* Injects captcha into provided form using optionally selected field name.
*
* @param html_form $form
* @param string $name name of field to use in form for receiving response
* @return $this fluent interface
*/
public function injectIntoForm(html_form $form, $name = 'c_info')
{
if ($form->hasInput()) {
$this->check();
}
input::drop($name);
$info =& $this->generate();
$query = sprintf(_L('Tragen Sie das Ergebnis von %d %s %d als Ziffernfolge in das folgende Feld ein!'), $info['a'], $info['b'] < 0 ? '-' : '+', abs($info['b']));
$info['name'] = $name;
$form->setStaticRow('c_query', null, $query)->setTexteditRow($name, null);
return $this;
}