public static int getExtendedState(Component component) {
    int state = Frame.NORMAL;
    if (component instanceof Frame) {
      state = ((Frame)component).getExtendedState();
      if (SystemInfoRt.isMac) {
        // workaround: frame.state is not updated by jdk so get it directly from peer
        ComponentPeer peer = AWTAccessor.getComponentAccessor().getPeer(component);
        if (peer instanceof FramePeer) {
          state = ((FramePeer)peer).getState();
        }
      }
    }
    return state;
  }
public static int getExtendedState(Component component)