fix: fix #243

src/Ursa/Controls/Banner/Banner.cs

@@ -0,0 +1,70 @@
+using Avalonia;
+using Avalonia.Controls;
+using Avalonia.Controls.Metadata;
+using Avalonia.Controls.Notifications;
+using Avalonia.Controls.Primitives;
+using Avalonia.Controls.Templates;
+using Avalonia.Interactivity;
+using Avalonia.Metadata;
+using Irihi.Avalonia.Shared.Helpers;
+
+namespace Ursa.Controls;
+
+[PseudoClasses(PC_Icon)]
+[TemplatePart(PART_CloseButton, typeof(Button))]
+public class Banner: HeaderedContentControl
+{
+    public const string PC_Icon = ":icon";
+    public const string PART_CloseButton = "PART_CloseButton";
+
+    private Button? _closeButton;
+    
+    public static readonly StyledProperty<bool> CanCloseProperty = AvaloniaProperty.Register<Banner, bool>(
+        nameof(CanClose));
+
+    public bool CanClose
+    {
+        get => GetValue(CanCloseProperty);
+        set => SetValue(CanCloseProperty, value);
+    }
+
+    public static readonly StyledProperty<bool> ShowIconProperty = AvaloniaProperty.Register<Banner, bool>(
+        nameof(ShowIcon), true);
+
+    public bool ShowIcon
+    {
+        get => GetValue(ShowIconProperty);
+        set => SetValue(ShowIconProperty, value);
+    }
+
+    public static readonly StyledProperty<object?> IconProperty = AvaloniaProperty.Register<Banner, object?>(
+        nameof(Icon));
+
+    public object? Icon
+    {
+        get => GetValue(IconProperty);
+        set => SetValue(IconProperty, value);
+    }
+
+    public static readonly StyledProperty<NotificationType> TypeProperty = AvaloniaProperty.Register<Banner, NotificationType>(
+        nameof(Type));
+
+    public NotificationType Type
+    {
+        get => GetValue(TypeProperty);
+        set => SetValue(TypeProperty, value);
+    }
+
+    protected override void OnApplyTemplate(TemplateAppliedEventArgs e)
+    {
+        base.OnApplyTemplate(e);
+        Button.ClickEvent.RemoveHandler(OnCloseClick, _closeButton);
+        _closeButton = e.NameScope.Find<Button>(PART_CloseButton);
+        Button.ClickEvent.AddHandler(OnCloseClick, _closeButton);
+    }
+
+    private void OnCloseClick(object sender, RoutedEventArgs args)
+    {
+        IsVisible = false;
+    }
+}