feat: Add Banner

demo/Ursa.Demo/Pages/BannerDemo.axaml.cs

@@ -1,6 +1,9 @@
+using System.Collections.ObjectModel;
 using Avalonia;
 using Avalonia.Controls;
+using Avalonia.Controls.Notifications;
 using Avalonia.Markup.Xaml;
+using Ursa.Demo.ViewModels;
 
 namespace Ursa.Demo.Pages;
 
@@ -9,10 +12,37 @@ public partial class BannerDemo : UserControl
     public BannerDemo()
     {
         InitializeComponent();
+        this.DataContext = new BannerDemoViewModel();
+    }
+}
+
+public class BannerDemoViewModel: ViewModelBase
+{
+    private ObservableCollection<NotificationType> _types;
+    public ObservableCollection<NotificationType> Types
+    {
+        get => _types;
+        set => SetProperty(ref _types, value);
     }
 
-    private void InitializeComponent()
+    private NotificationType _selectedType;
+
+    public NotificationType SelectedType
     {
-        AvaloniaXamlLoader.Load(this);
+        get => _selectedType;
+        set => SetProperty(ref _selectedType, value);
+    }
+
+    private bool _bordered;
+
+    public bool Bordered
+    {
+        get => _bordered;
+        set => SetProperty(ref _bordered, value);
+    }
+
+    public BannerDemoViewModel()
+    {
+        Types = new ObservableCollection<NotificationType>() { NotificationType.Information, NotificationType.Warning, NotificationType.Error, NotificationType.Success };
     }
 }