feat: redesign Banner.

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

@@ -1,7 +1,7 @@
-using System.Collections.ObjectModel;
 using Avalonia.Controls;
 using Avalonia.Controls.Notifications;
 using Avalonia.Markup.Xaml;
+using CommunityToolkit.Mvvm.ComponentModel;
 using Ursa.Demo.ViewModels;
 
 namespace Ursa.Demo.Pages;
@@ -20,37 +20,9 @@ public partial class BannerDemo : UserControl
     }
 }
 
-public class BannerDemoViewModel : ViewModelBase
+public partial class BannerDemoViewModel : ViewModelBase
 {
-    private ObservableCollection<NotificationType>? _types;
-
-    public ObservableCollection<NotificationType>? Types
-    {
-        get => _types;
-        set => SetProperty(ref _types, value);
-    }
-
-    private NotificationType _selectedType;
-
-    public NotificationType SelectedType
-    {
-        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.Success, NotificationType.Warning, NotificationType.Error
-        };
-    }
+    [ObservableProperty] private NotificationType _selectedType;
+    [ObservableProperty] private bool _bordered;
+    [ObservableProperty] private bool _canClose;
 }