设计模式学习总结（五）创建者模式(Builder)

public class Laptop
{
    ArrayList LaptopParts = new ArrayList();
    public void AddParts(string PartName)
    {
        LaptopParts.Add(PartName);
    }

    public void ShowPartList()
    {
        foreach (string part in LaptopParts)
        {
            Console.WriteLine(part);
        }
    }
}

public abstract class AbstractBuilder
{
    public abstract void CreateCPU();
    public abstract void CreateScreen();
    public abstract void CreateKeyboard();
    public abstract Laptop GetLaptop();
}

public class AppleLaptopBuilder : AbstractBuilder
{
    private Laptop laptop = new Laptop();
    public override void CreateCPU()
    {
        laptop.AddParts("Apple CPU is very fast!");
    }

    public override void CreateKeyboard()
    {
        laptop.AddParts("The experience of apple Keyboard is wouderful!");
    }

    public override void CreateScreen()
    {
        laptop.AddParts("The experience of apple screen is really amazing!");
    }

    public override Laptop GetLaptop()
    {
        return laptop;
    }
}

public class LenovoLaptopBuilder : AbstractBuilder
{
    private Laptop laptop = new Laptop();
    public override void CreateCPU()
    {
        laptop.AddParts("Lenovo CPU is very good!");
    }

    public override void CreateKeyboard()
    {
        laptop.AddParts("Lenovo Keyboard looks amazing!");
    }

    public override void CreateScreen()
    {
        laptop.AddParts("Lenovo screen is wounderful!");
    }

    public override Laptop GetLaptop()
    {
        return laptop;
    }
}

public class Director
{
    public void Construct(AbstractBuilder builder)
    {
        builder.CreateCPU();
        builder.CreateKeyboard();
        builder.CreateScreen();
        builder.GetLaptop();
    }
}

class Program
{
    static void Main(string[] args)
    {
        Director director = new Director();

        AppleLaptopBuilder alBuilder = new AppleLaptopBuilder();
        director.Construct(alBuilder);
        Laptop AppLaptop = alBuilder.GetLaptop();
        AppLaptop.ShowPartList();

        LenovoLaptopBuilder llBuilder = new LenovoLaptopBuilder();
        director.Construct(llBuilder);
        Laptop LnLaptop = llBuilder.GetLaptop();
        LnLaptop.ShowPartList();
        Console.ReadLine();
    }
}