public void Undo() { if (PrevSpeed == Speed.HIGH) { CeilingFan.High(); } else if (PrevSpeed == Speed.MEDIUM) { CeilingFan.Medium(); } else if (PrevSpeed == Speed.LOW) { CeilingFan.Low(); } else if (PrevSpeed == Speed.OFF) { CeilingFan.Off(); } }
public void Execute() { PrevSpeed = CeilingFan.GetSpeed(); CeilingFan.High(); }