rootNode.attachChild(assembler.getModel());
SwingUtilities.invokeLater(new Runnable() {
public void run() {
AssemblerSideBar bar = new AssemblerSideBar(assembler);
// bar.setInputHandler(input);
JFrame frame = new JFrame();
frame.getContentPane().add(bar);
frame.setDefaultCloseOperation(WindowConstants.DISPOSE_ON_CLOSE);
frame.pack();