/**
* Registers an ajax variable in the buffer
*
* @param ajax_var $variable
*/
public function register_var(&$variable)
{
if (!isset($this->vars[$variable->get_id()])) {
$this->vars[$variable->get_id()] =& $variable;
}
$client_id = $variable->client_id();
if ($this->is_post_back && isset($_REQUEST[$client_id])) {
$variable->set_value($_REQUEST[$client_id]);
}
}
