From c7d64d00156d6a20415d841855f5c073f421bcde Mon Sep 17 00:00:00 2001
From: Andrei Zavatski <megaman9919@gmail.com>
Date: Tue, 18 Feb 2020 13:37:59 +0300
Subject: [PATCH] Update BindableList usage in DrawableComment

---
 osu.Game/Overlays/Comments/DrawableComment.cs | 16 ++++++++++++++--
 1 file changed, 14 insertions(+), 2 deletions(-)

diff --git a/osu.Game/Overlays/Comments/DrawableComment.cs b/osu.Game/Overlays/Comments/DrawableComment.cs
index 7774921f00..cb9e32f1ad 100644
--- a/osu.Game/Overlays/Comments/DrawableComment.cs
+++ b/osu.Game/Overlays/Comments/DrawableComment.cs
@@ -21,6 +21,7 @@ using System.Collections.Generic;
 using System;
 using osu.Framework.Graphics.Shapes;
 using osu.Framework.Extensions.IEnumerableExtensions;
+using System.Collections.Specialized;
 
 namespace osu.Game.Overlays.Comments
 {
@@ -269,10 +270,21 @@ namespace osu.Game.Overlays.Comments
                 });
             }
 
-            Replies.ItemsAdded += onRepliesAdded;
-
             if (Replies.Any())
                 onRepliesAdded(Replies);
+
+            Replies.CollectionChanged += (_, args) =>
+            {
+                switch (args.Action)
+                {
+                    case NotifyCollectionChangedAction.Add:
+                        onRepliesAdded(args.NewItems.Cast<DrawableComment>());
+                        break;
+
+                    default:
+                        throw new NotSupportedException(@"You can only add replies to this list. Other actions are not supported.");
+                }
+            };
         }
 
         protected override void LoadComplete()