C# Будівельник (Builder)

2075 / C# / Шаблони / Будівельник (Builder)

 

Дає змогу створювати складні об’єкти крок за кроком

 

static void Main(string[] args)
{
  Director director = new Director();
  Builder b1 = new ConcreteBuilder1();
  Builder b2 = new ConcreteBuilder2();

  director.Construct(b1);
  Product p1 = b1.GetResult();
  p1.Show();
  director.Construct(b2);
  Product p2 = b2.GetResult();
  p2.Show();
  Console.ReadKey();
}

class Director
{
  public void Construct(Builder builder)
  {
    builder.BuildPartA();
    builder.BuildPartB();
  }
}

abstract class Builder
{
  public abstract void BuildPartA();
  public abstract void BuildPartB();
  public abstract Product GetResult();
}

class ConcreteBuilder1 : Builder
{
  private Product product = new Product();
  public override void BuildPartA()
  {
    product.Add("PartA");
  }
  public override void BuildPartB()
  {
    product.Add("PartB");
  }
  public override Product GetResult()
  {
    return product;
  }
}

class ConcreteBuilder2 : Builder
{
  private Product product = new Product();
  public override void BuildPartA()
  {
    product.Add("PartX");
  }
  public override void BuildPartB()
  {
    product.Add("PartY");
  }
  public override Product GetResult()
  {
    return product;
  }
}

class Product
{
  private List<string> parts = new List<string>();
  public void Add(string part)
  {
    parts.Add(part);
  }
  public void Show()
  {
    Console.WriteLine("\nProduct Parts:");
    foreach (string part in parts)
    Console.WriteLine(part);
  }
}