/**
* Fetches index data from IMAP server
*/
private function get_index_data($mailbox, $sort_field, $sort_order, $mbox_data = array())
{
if (empty($mbox_data)) {
$mbox_data = $this->imap->folder_data($mailbox);
}
if ($mbox_data['EXISTS']) {
// fetch sorted sequence numbers
$index = $this->imap->index_direct($mailbox, $sort_field, $sort_order);
} else {
$index = new rcube_result_index($mailbox, '* SORT');
}
return $index;
}
