public void Undo() { switch (_previousSpeed) { case 3: _ceilingFan.High(); break; case 2: _ceilingFan.Medium(); break; case 1: _ceilingFan.Low(); break; case 0: _ceilingFan.Off(); break; default: break; } }
public void Execute() { _previousSpeed = _ceilingFan.Speed; _ceilingFan.High(); }