svoid addToHGrid(final Container hgrid, final Component c) {
  if (hgrid == null || c == null) ret;
  swing {
    hgrid.add(component);
    GridLayout grid = optCast(GridLayout.class, hgrid.getLayout());
    if (grid != null)
      grid.setColumns(countComponents(hgrid));
    revalidate(hgrid);
  }
}

Began life as a copy of #1016811