public void undo()
{
if (previousSpeed == Fan.HIGH)
{
ceilingFan.High();
}
else if (previousSpeed == Fan.MEDUIM)
{
ceilingFan.Meduim();
}
else if (previousSpeed == Fan.LOW)
{
ceilingFan.Low();
}
else if (previousSpeed == Fan.OFF)
{
ceilingFan.Off();
}
}
public void Undo()
{
switch (_speed)
{
case Fan.HIGH:
_fan.High();
break;
case Fan.MEDIUM:
_fan.Medium();
break;
case Fan.LOW:
_fan.Low();
break;
case Fan.OFF:
_fan.Off();
break;
}
}
public void execute()
{
previousSpeed = ceilingFan.GetSpeed();
ceilingFan.Low();
}
public void Execute()
{
fan.Low();
}
public void Excute()
{
_speed = _fan.Speed;
_fan.Low();
}