Disable PreserveFilenameOnDirectoryChanges for now and add ability to launch Showcases on demand

Author: tznind

Showcase/Program.cs

@@ -1,14 +1,59 @@
 using Terminal.Gui.App;
+using Terminal.Gui.Input;
+using Terminal.Gui.ViewBase;
+using Terminal.Gui.Views;
 
 namespace Showcase
 {
     internal class Program
     {
         static void Main(string[] args)
         {
-            using(var app = Application.Create())
+            Type[] types = [typeof(Menus)];
+
+            using (var app = Application.Create())
             {
-                app.Run<Menus>();
+                var tv = new TableView()
+                {
+                    Width = Dim.Fill(),
+                    Height = Dim.Fill()
+                };
+
+                tv.Table = new EnumerableTableSource<Type>(types,
+                    new Dictionary<string, Func<Type, object>> { { "Scenario (Enter to open, Esc to close/exit)", (t) => t.Name } }
+                    );
+
+                tv.KeyBindings.ReplaceCommands(Key.Enter,Command.Activate);
+
+                tv.Activating += (s, e) =>
+                {
+                    var row = tv.Value.Cursor.Y;
+                    if (row >= 0 && row < types.Length)
+                    {
+                        var toCreate = types[row];
+                        View view = (View)Activator.CreateInstance(toCreate);
+                        
+                        if(view is Runnable r)
+                        {
+                            app.Run(r);
+                        }
+                        else
+                        {
+                            var newRunnable = new Runnable();
+                            newRunnable.Add(view);
+                            app.Run(newRunnable);
+                        }
+
+                        e.Handled = true;
+                    }
+                };
+
+                var r = new Runnable();
+                r.Add(tv);
+
+                app.Init();
+                app.Run(r);
+                app.Dispose();
             }
         }
     }

src/UI/Editor.cs

@@ -1352,7 +1352,7 @@ private void New()
             AllowedTypes = new List<IAllowedType>() { new AllowedType("C# File", ".cs") },
             Path = "MyView.cs",
         };
-        ofd.Style.PreserveFilenameOnDirectoryChanges = true;
+        // ofd.Style.PreserveFilenameOnDirectoryChanges = true;
 
         app.Run(ofd);