static void ShowAboutDoor(IDoor d)
{
Console.WriteLine("---NEW DOOR---");
d.ShowInfo();
Console.ForegroundColor = ConsoleColor.Red;
Console.WriteLine(d.GetType().Name);
Console.ResetColor();
//---CASE 1---
if (d is WoodenDoor)
{
((WoodenDoor)d).ShowPicture();
}
//---CASE 2---
MetalDoor m = d as MetalDoor;
if (m != null)
{
m.ShowPicture();
}
//---CASE 3---
MetalDoor m1 = d as MetalDoor;
m1?.ShowPicture();
}
static void Show1(MetalDoor m, int?p, double?d = null)
{
int p1 = (int)p;
m?.ChangePrice(p1);
}
static void Main(string[] args)
{
// IDoor d = new IDoor(); - cant create object of interface
WoodenDoor d = new WoodenDoor();
MetalDoor d1 = new MetalDoor();
d.ShowPicture();
IDoor[] doors = new IDoor[4]
{
new WoodenDoor(),
new MetalDoor(),
new MetalDoor(),
new WoodenDoor()
};
foreach (var item in doors)
{
item.ShowInfo();
}
ShowAboutDoor(d);
ShowAboutDoor(d1);
//---lost object---
d = null;
//----ELVIS OPERATOR---
d = d ?? new WoodenDoor();
d.ShowInfo();
//---int nullable---
// int[] arr = null;// - can do this
// arr[0] = null;//---cant't do this, no nullable type int
Show1(null, 5, null);
Show2(null);
//----OPENABLE DOOR---
Header("OPENABLE DOOR");
d1.Open();
d1.ShowInfo();
d1.Close();
d1.ShowInfo();
//OpenClose((IOpenable)d);
OpenClose(d1);
d1.ShowInfo();
Header("ICLONABLE");
WoodenDoor w5 = (WoodenDoor)d.Clone();
w5.ShowInfo();
IDoor newClone = (IDoor)ShowClone((IClonable)doors[1]);
newClone.ShowInfo();
Window w = new Window("my very expencive window");
Window newW = (Window)ShowClone((IClonable)w);
newW.Show();
}
