!7

cmodule LockScreen > DynSingleFunction {
  switchable bool withConfirm; // to filter out accidental clicks
  transient JFrame frame;
  
  void doIt { showFullscreen(); }
  
  void showFullscreen enter {
    if (frame != null) activateFrame(frame);
    frame = showFullScreen(jfullcenter(
      centerAndSouthWithMargins(
        jcenteredlabel("Lock mode!"),
        jMarginButton(20, "Exit", rThread exitStep2))));
    onFrameClose(frame, r { frame = null; });
  }
  
  void exitFullscreen enter {
    disposeFrame(frame);
  }
  
  void exitStep2 enter {
    /*if (!withConfirm) TODO */
    exitFullscreen();
  }
}

Began life as a copy of #1027023