public void NotifySweepModeChange(SweepMode mode)
 {
     if (mode == SweepMode.Normal)
     {
         view = null;
     }
     else
     {
         CalSweepSectionView();
     }
 }
 public void CalSweepSectionView()
 {
     view?.Dispose();
     if (sweepModeSubject.IsSectionSweeping())
     {
         view = displayer.CreateSweepSwctionView(sweepModeSubject.GetSweepSection());
     }
     else
     {
         view = null;
     }
 }