From a08c4888e0e2e1112275d228b42a0a3899e2a5f2 Mon Sep 17 00:00:00 2001
From: Nikita Tsukanov <keks9n@gmail.com>
Date: Tue, 4 Jan 2022 18:01:32 +0300
Subject: [PATCH] WeakEvent: cache Compact() delegate

---
 src/Avalonia.Base/Utilities/WeakEvent.cs | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/Avalonia.Base/Utilities/WeakEvent.cs b/src/Avalonia.Base/Utilities/WeakEvent.cs
index c353e11263..0b32015a8a 100644
--- a/src/Avalonia.Base/Utilities/WeakEvent.cs
+++ b/src/Avalonia.Base/Utilities/WeakEvent.cs
@@ -49,6 +49,7 @@ public class WeakEvent<TSender, TEventArgs> : WeakEvent where TEventArgs : Event
     {
         private readonly WeakEvent<TSender, TEventArgs> _ev;
         private readonly TSender _target;
+        private readonly Action _compact;
 
         private WeakReference<IWeakEventSubscriber<TEventArgs>>?[] _data =
             new WeakReference<IWeakEventSubscriber<TEventArgs>>[16];
@@ -60,7 +61,7 @@ public class WeakEvent<TSender, TEventArgs> : WeakEvent where TEventArgs : Event
         {
             _ev = ev;
             _target = target;
-
+            _compact = Compact;
             _unsubscribe = ev._subscribe(target, OnEvent);
         }
 
@@ -110,7 +111,7 @@ public class WeakEvent<TSender, TEventArgs> : WeakEvent where TEventArgs : Event
             if(_compactScheduled)
                 return;
             _compactScheduled = true;
-            Dispatcher.UIThread.Post(Compact, DispatcherPriority.Background);
+            Dispatcher.UIThread.Post(_compact, DispatcherPriority.Background);
         }
         
         void Compact()