/**
* Dont' overwrite the old state if requested
* @param [type] $key [description]
* @param [type] $value [description]
*/
public function setState($key, $value = null, $overwrite = false)
{
if (!$overwrite) {
$old_value = $this->getState($key, array());
if (is_array($value)) {
$value = array_merge($old_value, $value);
} else {
$old_value[] = $value;
$value = $old_value;
}
}
parent::setState($key, $value);
return $this;
}
