csharp: Add tentative MVVM example

reference/csharp/ui/src/meson.build

@@ -27,3 +27,10 @@ executable('efl_reference_ui_custom_widget',
   cs_args : efl_mono_libs,
   install : true
 )
+
+executable('efl_reference_ui_mvvm_basic',
+  files(['ui_mvvm_basic.cs']),
+  dependencies : deps,
+  cs_args : efl_mono_libs,
+  install : true
+)

reference/csharp/ui/src/ui_mvvm_basic.cs

@@ -0,0 +1,83 @@
+using System;
+
+class WeatherStation
+{
+    public String Nick { get; set; }
+    public float Temperature { get; set; }
+
+    public static Efl.UserModel<WeatherStation> CreateModel(Efl.Loop loop)
+    {
+        Efl.UserModel<WeatherStation> stations = new Efl.UserModel<WeatherStation>(loop);
+        stations.Add (new WeatherStation{ Nick="FLN", Temperature=20 });
+        stations.Add (new WeatherStation{ Nick="SAO", Temperature=25 });
+        stations.Add (new WeatherStation{ Nick="RIO", Temperature=35 });
+        stations.Add (new WeatherStation{ Nick="BSB", Temperature=30 });
+
+        return stations;
+    }
+}
+
+class WeatherServer
+{
+}
+
+class Application : Efl.Csharp.Application
+{
+    private Efl.Ui.Win win;
+
+    protected override void OnInitialize(string[] args)
+    {
+        win = new Efl.Ui.Win(parent: null, winName: "MVVM Example",
+                             winType: Efl.Ui.WinType.Basic);
+        win.SetText("EFL Life");
+        win.SetAutohide(true);
+
+        win.VisibilityChangedEvent += QuitEvt;
+
+
+        var factory = new Efl.Ui.ItemFactory<Efl.Ui.ListDefaultItem>(win);
+        /* factory.TextPart().Markup().Bind("Nick"); */
+        factory.PropertyBind("text", "Nick");
+
+        var model = WeatherStation.CreateModel(Efl.App.AppMain);
+        model.SetProperty("item.width", 1);
+        model.SetProperty("item.height", 1);
+
+        Console.WriteLine($"Width: {model.GetProperty("item.width")}");
+
+        /* var list = new Efl.Ui.ListView(box); */
+
+        /* list.LayoutFactory = factory; */
+        /* list.Model = model; */
+
+        var manager = new Efl.Ui.PositionManager.List(win);
+        var list = new Efl.Ui.CollectionView(win);
+
+        Eina.Log.Error("Setting manager");
+        list.PositionManager = manager;
+        Eina.Log.Error("Setting model");
+        list.Model = model;
+        Eina.Log.Error("Setting factory");
+        list.Factory = factory;
+
+        /* var box = new Efl.Ui.Box(win); */
+        /* box.PackEnd(list); */
+        win.SetContent(list);
+        win.SetSize(new Eina.Size2D(640, 480));
+        win.Visible = true;
+    }
+
+    void QuitEvt(object sender, Efl.Gfx.EntityVisibilityChangedEventArgs ev)
+    {
+        if (ev.arg == false)
+        {
+            Efl.App.AppMain.Quit(0);
+        }
+    }
+
+    public static void Main()
+    {
+        var app = new Application();
+        app.Launch();
+    }
+}