From a96341498a1286075ad8b8729baa49d2c3f1f19a Mon Sep 17 00:00:00 2001
From: rabbitism <popmessiah@hotmail.com>
Date: Thu, 16 May 2024 23:22:43 +0800
Subject: [PATCH] fix: ensure indicator is visibility upon loaded.

---
 .../ViewModels/SelectionListDemoViewModel.cs        |  1 +
 src/Ursa/Controls/SelectionList/SelectionList.cs    | 13 +++++++++++++
 2 files changed, 14 insertions(+)

diff --git a/demo/Ursa.Demo/ViewModels/SelectionListDemoViewModel.cs b/demo/Ursa.Demo/ViewModels/SelectionListDemoViewModel.cs
index 3711edd..b05b20f 100644
--- a/demo/Ursa.Demo/ViewModels/SelectionListDemoViewModel.cs
+++ b/demo/Ursa.Demo/ViewModels/SelectionListDemoViewModel.cs
@@ -14,6 +14,7 @@ public partial class SelectionListDemoViewModel: ObservableObject
         {
             "Ding", "Otter", "Husky", "Mr. 17", "Cass"
         };
+        SelectedItem = Items[0];
     }
 
     public void Clear()
diff --git a/src/Ursa/Controls/SelectionList/SelectionList.cs b/src/Ursa/Controls/SelectionList/SelectionList.cs
index ba102cc..916a446 100644
--- a/src/Ursa/Controls/SelectionList/SelectionList.cs
+++ b/src/Ursa/Controls/SelectionList/SelectionList.cs
@@ -7,6 +7,7 @@ using Avalonia.Controls.Primitives;
 using Avalonia.Controls.Selection;
 using Avalonia.Controls.Templates;
 using Avalonia.Input;
+using Avalonia.Interactivity;
 using Avalonia.Rendering.Composition;
 using Avalonia.Rendering.Composition.Animations;
 using Irihi.Avalonia.Shared.Helpers;
@@ -95,6 +96,18 @@ public class SelectionList: SelectingItemsControl
         EnsureIndicatorAnimation();
     }
 
+    protected override void OnLoaded(RoutedEventArgs e)
+    {
+        base.OnLoaded(e);
+        if(_indicator is not null && SelectedItem is not null)
+        {
+            var container = ContainerFromItem(SelectedItem);
+            if (container is null) return;
+            _indicator.Opacity = 1;
+            _indicator.Arrange(container.Bounds);
+        }
+    }
+
     private void EnsureIndicatorAnimation()
     {
         if (_indicator is not null)