void HideFileMaskUI ()
{
if (labelFileMask == null)
return;
properties.Set ("MonoDevelop.FindReplaceDialogs.FileMask", searchentryFileMask.Query);
uint row = TableGetRowForItem (tableFindAndReplace, labelFileMask);
TableRemoveRow (tableFindAndReplace, row, labelFileMask, searchentryFileMask, true);
searchentryFileMask = null;
labelFileMask = null;
}