From f4f478c910ca1bda40f9b8ef29b2038854896340 Mon Sep 17 00:00:00 2001
From: Steven Kirk <grokys@gmail.com>
Date: Thu, 28 Oct 2021 14:50:50 +0200
Subject: [PATCH] Move ChildrenChanged to AutomationPeer.

---
 .../Automation/Peers/AutomationPeer.cs              | 13 +++++++++++++
 .../Automation/Peers/ControlAutomationPeer.cs       |  4 +---
 2 files changed, 14 insertions(+), 3 deletions(-)

diff --git a/src/Avalonia.Controls/Automation/Peers/AutomationPeer.cs b/src/Avalonia.Controls/Automation/Peers/AutomationPeer.cs
index fbca22031a..54b2fcc7fa 100644
--- a/src/Avalonia.Controls/Automation/Peers/AutomationPeer.cs
+++ b/src/Avalonia.Controls/Automation/Peers/AutomationPeer.cs
@@ -167,8 +167,21 @@ namespace Avalonia.Automation.Peers
         /// <returns>The provider, or null if not implemented on this peer.</returns>
         public T? GetProvider<T>() => (T?)GetProviderCore(typeof(T));
 
+        /// <summary>
+        /// Occurs when the children of the automation peer have changed.
+        /// </summary>
+        public event EventHandler? ChildrenChanged;
+
+        /// <summary>
+        /// Occurs when a property value of the automation peer has changed.
+        /// </summary>
         public event EventHandler<AutomationPropertyChangedEventArgs>? PropertyChanged;
 
+        /// <summary>
+        /// Raises an event to notify the automation client the the children of the peer have changed.
+        /// </summary>
+        protected void RaiseChildrenChangedEvent() => ChildrenChanged?.Invoke(this, EventArgs.Empty);
+
         /// <summary>
         /// Raises an event to notify the automation client of a changed property value.
         /// </summary>
diff --git a/src/Avalonia.Controls/Automation/Peers/ControlAutomationPeer.cs b/src/Avalonia.Controls/Automation/Peers/ControlAutomationPeer.cs
index 3cbcdcf348..f7a993e16b 100644
--- a/src/Avalonia.Controls/Automation/Peers/ControlAutomationPeer.cs
+++ b/src/Avalonia.Controls/Automation/Peers/ControlAutomationPeer.cs
@@ -26,8 +26,6 @@ namespace Avalonia.Automation.Peers
 
         public Control Owner { get; }
 
-        public event EventHandler? ChildrenChanged;
-
         public AutomationPeer GetOrCreate(Control element)
         {
             if (element == Owner)
@@ -110,7 +108,7 @@ namespace Avalonia.Automation.Peers
         protected void InvalidateChildren()
         {
             _childrenValid = false;
-            ChildrenChanged?.Invoke(this, EventArgs.Empty);
+            RaiseChildrenChangedEvent();
         }
 
         /// <summary>