From e2546cc0fb81ea476298386ceadae02c6d918868 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Bartosz=20Korczy=C5=84ski?= <b.andysc@gmail.com>
Date: Sat, 9 Mar 2024 01:04:47 +0000
Subject: [PATCH] Fix dev tools adorner highlight (#14883)

---
 .../Diagnostics/Views/TreePageView.xaml                     | 3 ++-
 .../Diagnostics/Views/TreePageView.xaml.cs                  | 6 ++++++
 2 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/src/Avalonia.Diagnostics/Diagnostics/Views/TreePageView.xaml b/src/Avalonia.Diagnostics/Diagnostics/Views/TreePageView.xaml
index 0a94d428c1..d34b34cbdd 100644
--- a/src/Avalonia.Diagnostics/Diagnostics/Views/TreePageView.xaml
+++ b/src/Avalonia.Diagnostics/Diagnostics/Views/TreePageView.xaml
@@ -8,7 +8,8 @@
               BorderThickness="0"
               ItemsSource="{Binding Nodes}"
               SelectedItem="{Binding SelectedNode, Mode=TwoWay}"
-              PointerMoved="UpdateAdorner">
+              PointerMoved="UpdateAdorner"
+              PointerExited="RemoveAdorner">
       <TreeView.DataTemplates>
         <TreeDataTemplate DataType="vm:TreeNode"
                           ItemsSource="{Binding Children}">
diff --git a/src/Avalonia.Diagnostics/Diagnostics/Views/TreePageView.xaml.cs b/src/Avalonia.Diagnostics/Diagnostics/Views/TreePageView.xaml.cs
index f85a61d930..69dc375ede 100644
--- a/src/Avalonia.Diagnostics/Diagnostics/Views/TreePageView.xaml.cs
+++ b/src/Avalonia.Diagnostics/Diagnostics/Views/TreePageView.xaml.cs
@@ -51,6 +51,12 @@ namespace Avalonia.Diagnostics.Views
             _adorner = Controls.ControlHighlightAdorner.Add(visual, visualizeMarginPadding: shouldVisualizeMarginPadding == true);
         }
 
+        private void RemoveAdorner(object? sender, PointerEventArgs e)
+        {
+            _adorner?.Dispose();
+            _adorner = null;
+        }
+
         protected override void OnPropertyChanged(AvaloniaPropertyChangedEventArgs change)
         {
             base.OnPropertyChanged(change);