private void btTune_Click(object sender, EventArgs e)
{
if (lbTuneOptions.Items.Count <= 0)
{
MessageBox.Show("Must select tuning options");
return;
}
iCar car = (iCar)lbUntunedCars.SelectedItem;
if (car == null)
{
car = (iCar)lbTunedCars.SelectedItem;
if (car == null)
{
MessageBox.Show("Must select a Car");
return;
}
else
{
lbTunedCars.Items.RemoveAt(lbTunedCars.SelectedIndex);
}
}
else
{
lbUntunedCars.Items.RemoveAt(lbUntunedCars.SelectedIndex);
}
// this copy is only done for naming purposes.
// since from this point forward the iCar object is no longer a car (component) but a tuning option (decoration)
iCar tuning_options = car;
foreach (var option in lbTuneOptions.SelectedItems)
{
string optionName = option.ToString();
if (optionName == PaintJob.Name)
{
tuning_options = new PaintJob(tuning_options);
}
else if (optionName == Hydraulics.Name)
{
tuning_options = new Hydraulics(tuning_options);
}
else if (optionName == VinylSticker.Name)
{
tuning_options = new VinylSticker(tuning_options);
}
else if (optionName == Airco.Name)
{
Airco airco = new Airco(tuning_options);
//To show you can have different funtionality for each decorator we will test the airco:
airco.TurnOn();
airco.TurnOff();
tuning_options = airco;
}
}
tbLabelCars.Text = "";
lbTunedCars.Items.Add(tuning_options);
}
public TuningOptions(iCar car)
{
if (car == null)
{
throw new ArgumentNullException("car is null");
}
_car = car;
}
private void lbTunedCars_SelectedIndexChanged(object sender, EventArgs e)
{
iCar car = (iCar)lbTunedCars.SelectedItem;
if (car == null)
{
return;
}
lbUntunedCars.ClearSelected();
tbLabelCars.Text = "Costs: \u20AC " + car.cost() + " " + car.ToString();
}
public VinylSticker(iCar car) : base(car)
{
}
public PaintJob(iCar car) : base(car)
{
}
public Hydraulics(iCar car) : base(car)
{
}
public Airco(iCar car) : base(car)
{
}
