/**
* Handle contribution settings preview.
*
* @return null
*/
protected function preview()
{
$this->message->preview();
$attach_order = $this->request->variable('attach_order', array(0 => 0));
// Preserve the attachment order when preview is hit just in case it has been modified
if (!empty($attach_order)) {
$this->screenshots->get_operator()->sort(true, $attach_order, true);
}
}
