!7

p {
  JDesktopPane desktop = jDesktopPane();
  final JTextField tfInput = jCenteredTextField();
  showFrame(northAndCenter(tfInput, desktop));
  SwitchDispatcher dispatcher = installInternalFrameSwitcher_v3(desktop);
  dispatcher.shouldSwitch =
    func -> bool { isFocusedComponent(tfInput) };
  dispatcher.instaSwitch = true;
  addInternalFrame(desktop, "Test", jTextArea());
  addInternalFrame(desktop, "Test 2", jTextArea());
  addInternalFrame(desktop, "Test 3", jTextArea());
}