chore: Unify HeaderContent State

Author: DevTKSS

src/DevTKSS.Uno.Samples.MvuxGallery/Assets/Samples/ModelBinding-Sample.cs.txt

@@ -26,13 +26,10 @@ public partial record SomeModel
     public IListFeed<GalleryImageModel> GalleryImages => ListFeed.Async(this._galleryImageService.GetGalleryImagesAsync);
     public IState<string> SomeTitle => State<string>.Value(this, () => _stringLocalizer["SomeTitle"]);
 
-    #region ViewHeaderContent
-    public IFeed<HeaderContent> ViewHeaderContent => Feed.Async(GetGridViewHeaderAsync);
-    public async ValueTask<HeaderContent> GetGridViewHeaderAsync(CancellationToken ctk)
-    {
-        await Task.Delay(TimeSpan.FromMilliseconds(1), ctk);
-        var headerContent = new HeaderContent("Assets/Images/logo.png", _stringLocalizer["GridViewTitle"]);
-        return headerContent;
-    }
-    #endregion
+
+
+    public IState<HeaderContent> ViewHeaderContent => State<HeaderContent>.Value(this,
+           () => new HeaderContent(ImageLocation: "Assets/Images/styled_logo.png",
+                                   Caption: _stringLocalizer["ListViewTitle"]));
+
 }

src/DevTKSS.Uno.Samples.MvuxGallery/Presentation/ViewModels/DashboardModel.cs

@@ -35,12 +35,8 @@ public DashboardModel(
     /// <remarks>
     /// uses <see cref="IStringLocalizer"/> to dynamically localize the caption
     /// </remarks>
-    public IState<HeaderContent> ViewHeaderContent =>
-        State<HeaderContent>.Value(
-            owner: this,
-            valueProvider: () =>
-                new HeaderContent(
-                    ImageLocation: "Assets/Images/styled_logo.png",
+    public IState<HeaderContent> ViewHeaderContent => State<HeaderContent>.Value(this,
+        () => new HeaderContent(ImageLocation: "Assets/Images/styled_logo.png",
                     Caption: _stringLocalizer["GridViewTitle"]));
     #endregion
 

src/DevTKSS.Uno.Samples.MvuxGallery/Presentation/ViewModels/ListboardModel.cs

@@ -84,13 +84,17 @@ public ListboardModel(
     /// <summary>
     /// Gets the header content for the view, including an image and caption.
     /// </summary>
-    public IState<HeaderContent> ViewHeaderContent =>
-        State<HeaderContent>
-            .Value(owner: this,
-                   valueProvider: () =>
-                        new HeaderContent(
-                            ImageLocation: "Assets/Images/styled_logo.png",
-                            Caption: _stringLocalizer["ListViewTitle"]));
+    /// <remarks>
+    /// A Feed always needs a Async or Create function wich takes the cancellation token as parameter.<br/>
+    /// So this is using a Task.Delay to simulate a delay in the async function.
+    /// </remarks>
+    public IFeed<HeaderContent> ViewHeaderContent => Feed<HeaderContent>.Async(
+           valueProvider: async (ct) =>
+           {
+               await Task.Delay(1, ct);
+               return new HeaderContent(ImageLocation: "Assets/Images/styled_logo.png",
+                              Caption: _stringLocalizer["ListViewTitle"]);
+           });
     #endregion
 }