static int packInternalFrameInTopRightCorner_margin = 20;

static <A extends Component> A packInternalFrameInTopRightCorner(final A c) {
  final JInternalFrame win = getInternalFrame(c);
  if (win == null || getParent(win) == null) ret c;
  swing {
    win.pack();
    int w = getParent(win).getWidth();
    win.setLocation(w-win.getWidth()-packInternalFrameInTopRightCorner_margin, margin);
    fixInternalFrame(win);
  }
  ret c;
}