public void addDownlaodSession(DownloadSession session) {
addRow(session);
GapListPainter gap_list_painter = new GapListPainter(session.getGapList(),session.getFileSize());
TableItemGapList painter = new TableItemGapList(SWTPreferences.getDefaultColumnOrder(SWTConstants.DOWNLOAD_LIST_PROGRESS_COLUMN_ID),gap_list_painter);
addCustumControl(getItemCount()-1, painter);
}