设计模式--建造者模式

// 汽车类，表示我们要构建的复杂对象
class Car
{
    private string engine;
    private string body;
    private string wheel;
    private string other;

    public void SetEngine(string e) { engine = e; }
    public void SetBody(string b) { body = b; }
    public void SetWheel(string w) { wheel = w; }
    public void SetOther(string o) { other = o; }

    public void Show()
    {
        Console.WriteLine("引擎部分：" + engine);
        Console.WriteLine("车身部分：" + body);
        Console.WriteLine("车轮部分：" + wheel);
        Console.WriteLine("其他部分：" + other);
    }
}

// 抽象建造者类，声明了设置产品各部分的方法，以及返回产品的方法
abstract class CarBuilder
{
    public abstract void BuildEngine();
    public abstract void BuildBody();
    public abstract void BuildWheel();
    public abstract void BuildOther();
    public abstract Car GetCar();
}

// 具体建造者类，实现了抽象建造者的方法，以构建和装配各个部件
class JeepBuilder : CarBuilder
{
    private Car car = new Car();

    public override void BuildEngine() { car.SetEngine("Jeep 引擎"); }
    public override void BuildBody() { car.SetBody("Jeep 车身"); }
    public override void BuildWheel() { car.SetWheel("Jeep 车轮"); }
    public override void BuildOther() { car.SetOther("Jeep 其他部分"); }

    public override Car GetCar() { return car; }
}

// 具体建造者类，实现了抽象建造者的方法，以构建和装配各个部件
class BMWBuilder : CarBuilder
{
    private Car car = new Car();

    public override void BuildEngine() { car.SetEngine("BMW 引擎"); }
    public override void BuildBody() { car.SetBody("BMW 车身"); }
    public override void BuildWheel() { car.SetWheel("BMW 车轮"); }
    public override void BuildOther() { car.SetOther("BMW 其他部分"); }

    public override Car GetCar() { return car; }
}

// 导演类，负责调用建造者以构造产品
class Director
{
    public void Construct(CarBuilder builder)
    {
        builder.BuildEngine();
        builder.BuildBody();
        builder.BuildWheel();
        builder.BuildOther();
    }
}

// 客户端代码
class Client
{
    static void Main(string[] args)
    {
        Director director = new Director();
        CarBuilder builder = new JeepBuilder();
        director.Construct(builder);
        Car car = builder.GetCar();
        car.Show();

        builder = new BMWBuilder();
        director.Construct(builder);
        car = builder.GetCar();
        car.Show();

        Console.Read();
    }
}