using System;
using System.Windows.Forms;
using ApplicationContext;

namespace ApplicationContexts
{
	internal static class Program
	{
		[STAThread]
		private static void Main( )
		{
			ApplicationController.Begin( );
		}
	}

	public class ApplicationController
	{
		private static System.Windows.Forms.ApplicationContext _context;
		private readonly IScreenRegistry registry;

		public ApplicationController( IScreenRegistry registry )
		{
			this.registry = registry;
		}

		public static void Begin( )
		{
			Application.EnableVisualStyles( );
			Application.SetCompatibleTextRenderingDefault( false );
			_context = new System.Windows.Forms.ApplicationContext( new Form1( ) );
			Application.Run( _context );
		}

		public void Render( IScreen screen )
		{
			_context.MainForm.Controls.Add( registry.FindFor( screen ) );
		}
	}

	public interface IScreen {}

	public interface IScreenRegistry
	{
		Control FindFor( IScreen screen );
	}
}