User Interface Patterns

using System.Windows;
using ActiveMVC.Controllers;
using ActiveMVC.MVC;
using ActiveMVC.Models;


namespace ActiveMVC.Views
{

    public class PeopleTableView : View
    {

        public CtrlPeople Control { get; private set; }


        public PeopleTableView(People model)
            : base(model)
        {
            Control = new CtrlPeople();
        }


        protected override Controller GetController(string viewName)
        {
            return new PeopleTableController(this);
        }


        protected override void DisplayWindow(string viewName)
        {
            // Real MVC suggests a controller for each view so a button can be
            // considered a view with its own controller. Some implementation
            // let one controller handle all events of a view.
            // Since in Windows, UI is source of all events, I placed routing
            // calls here. In facr controller should do this or better yet,
            // every view element has its own controller.
            Control.LbxPeople.SelectionChanged +=
                (sender, args) =>
                Controller.HandleEvent(new ViewEvent {Name = "PersonSelected", Args = Control.LbxPeople.SelectedItem});
            Control.Visibility = Visibility.Visible;
        }


        protected override void OnModelChanged(object args)
        {
            var people = Model as People;
            if (people == null) return;

            var change = args as string;
            if (string.Equals(change, "People"))
            {
                ReloadPeople(people);
            }
            else if (string.Equals(change, "Selected"))
            {
                Control.LbxPeople.SelectedItem = people.Selected;
            }
        }


        private void ReloadPeople(People people)
        {
            lock (people.All)
            {
                Control.LbxPeople.Items.Clear();

                foreach (var person in people.All)
                {
                    Control.LbxPeople.Items.Add(person);
                }
            }
        }
    }
}