concept JG22Network is Swingable {
  JPanel panel = jpanelWithoutLayoutManager();
  G22Network network;

  *(G22Network *network) {
    for (element : network.elements) {
      var box = jMinSize(400, 300, jcenteredlabel("Drag or resize me!"));
      setBorder(box, BorderFactory.createLineBorder(Color.green, 10);
      onMouseDown(box, event -> {
        if (!mouseEventIsInBorder(event))
          new ComponentDragger(box, event);
      });
    new ComponentResizeDragger(box, box);
    var bounds = or(element.bounds, rect(50, 50, 400, 300));
    setBounds(box, bounds);
    addToContainer(panel, box);
  }

  cachedVisualize panel;
}