private static void DecoratorScenario()
{
var economyCar = new EconomyCar();
var economyCarWithDeluxeAccessories = new DeluxeAccessories(economyCar);
var deluxeCar = new DeluxeCar();
var deluxeCarWithBasicAccessories = new BasicAccessories(deluxeCar);
var deluxeCarWithDeluxeAccessories = new DeluxeAccessories(deluxeCar);
Console.WriteLine($"{economyCar.GetDescription()} - {economyCar.GetCost()}");
Console.WriteLine($"{economyCarWithDeluxeAccessories.GetDescription()} - {economyCarWithDeluxeAccessories.GetCost()}");
Console.WriteLine($"{deluxeCar.GetDescription()} - {deluxeCar.GetCost()}");
Console.WriteLine($"{deluxeCarWithBasicAccessories.GetDescription()} - {deluxeCarWithBasicAccessories.GetCost()}");
Console.WriteLine($"{deluxeCarWithDeluxeAccessories.GetDescription()} - {deluxeCarWithDeluxeAccessories.GetCost()}");
}
public static void DecoratorDemo()
{
// Create EcomomyCar instance.
ICar objCar = new EconomyCar();
CarAccessoriesDecorator objAccessoriesDecorator = new AdvancedAccessories(objCar);
objAccessoriesDecorator = new SportAccessories(objAccessoriesDecorator);
Console.Write("Car Detials: " + objAccessoriesDecorator.GetDescription());
Console.WriteLine("\n\n");
Console.Write("Total Price: " + objAccessoriesDecorator.GetCost());
Console.Read();
}
public static void DecoratorPattern()
{
//Create EcomomyCar instance.
ICar objCar = new EconomyCar();
//Wrp EconomyCar instance with BasicAccessories.
CarAccessoriesDecorator objAccessoriesDecorator = new BasicAccessories(objCar);
//Wrap EconomyCar instance with AdvancedAccessories instance.
objAccessoriesDecorator = new AdvancedAccessories(objAccessoriesDecorator);
Console.Write("Car Details: " + objAccessoriesDecorator.GetDescription());
Console.WriteLine("\n\n");
Console.Write("Total Price: " + objAccessoriesDecorator.GetCost());
Console.Read();
}
// Types of Design Patterns
//1. Creational: This type deals with the object creation and initialization. This pattern gives the
// program more flexibiliy in deciding which objects need to be create for a given case
// ex: singleton, factory, abstract factory.. etc
//2. Structural: This type deals with class and object composition.
// This pattern focuses on decoupling interface and implementation of classes and its objects.
// ex: Adapter, Bridge.. etc
//3. Behavioural : deals with communication b/w objects and classes ex: command, interpreter.. etc
static void Main(string[] args)
{
// Creational Patterns
//1. Singleton
Parallel.Invoke(() => Test1Prnt(), () => Test2Prnt());
// Structural patterns
//1. Composite Pattern - Hierarchy, folder structures and menu bars
IDirectReport dr1 = new DirectReport("Report1", "IT");
IDirectReport dr2 = new DirectReport("Report2", "IT");
IDirectReport dr3 = new DirectReport("Report3", "IT");
IDirectReport dr4 = new DirectReport("Report4", "HR");
IDirectReport dr5 = new DirectReport("Report5", "HR");
IDirectReport mgr1 = new Manager("ManagerIT", "IT")
{
DirectReports = { dr1, dr2, dr3 }
};
IDirectReport mgr2 = new Manager("ManagerHR", "HR")
{
DirectReports = { dr4, dr5 }
};
IDirectReport mgrGlobal = new Manager("GlobalManager", "Global")
{
DirectReports = { mgr1, mgr2 }
};
//mgrGlobal.GetInfo();
//2. Decorator Pattern - Used when the object needs to be extended without effecting the concrete implementation
ICar car = new EconomyCar();
//var cardecorator = new FinalOffer(car);
//Console.WriteLine($"Make:{cardecorator.Make},OriginalPrice:{cardecorator.Price().ToString()}, " +
// $"AfterDiscount:{cardecorator.GetDiscount()}");
//3. Adapter Pattern - Combine two incompatibe classes and interfaces using adapter pattern
//Diff b/w decorator and adapter https://stackoverflow.com/questions/17731522/what-are-the-differences-between-the-decorator-and-adapter-patterns/17731655
IEmployee emp = new EmployeeAdapter();
// var jsonData = emp.GetEmployees();
//Console.WriteLine(jsonData);
Console.ReadLine();
}
