deviceView = new DeviceView(context);
add(deviceView, BorderLayout.CENTER);
devices = new DefaultComboBoxModel(UserFacade.getInstance().getDeviceNames());
final JComboBox cboDevices = new JComboBox(devices);
cboDevices.addItemListener(new ItemListener() {
public void itemStateChanged(ItemEvent event) {
boolean selected = (event.getStateChange() == ItemEvent.SELECTED);
String item = selected ? String.valueOf(event.getItem()) : null;
UserFacade.getInstance().selectDevice(item);
deviceView.update();