Replace virtual async method with better abstraction

osu.Game/Screens/OnlinePlay/Playlists/PlaylistItemResultsScreen.cs

@@ -125,7 +125,7 @@ namespace osu.Game.Screens.OnlinePlay.Playlists
                     setPositions(lowerScores, userScore.Position.Value, 1);
                 }
 
-                return await TransformScores(allScores);
+                return await transformScores(allScores);
             }
             catch (OperationCanceledException)
             {
@@ -190,7 +190,7 @@ namespace osu.Game.Screens.OnlinePlay.Playlists
                     setPositions(index, pivot, -1);
                 }
 
-                return await TransformScores(index.Scores, index);
+                return await transformScores(index.Scores);
             }
             catch (OperationCanceledException)
             {
@@ -203,11 +203,10 @@ namespace osu.Game.Screens.OnlinePlay.Playlists
         }
 
         /// <summary>
-        /// Transforms returned <see cref="MultiplayerScores"/> into <see cref="ScoreInfo"/>s, ensure the <see cref="ScorePanelList"/> is put into a sane state, and invokes a given success callback.
+        /// Transforms returned <see cref="MultiplayerScores"/> into <see cref="ScoreInfo"/>s.
         /// </summary>
         /// <param name="scores">The <see cref="MultiplayerScore"/>s that were retrieved from <see cref="APIRequest"/>s.</param>
-        /// <param name="pivot">An optional pivot around which the scores were retrieved.</param>
-        protected virtual async Task<ScoreInfo[]> TransformScores(List<MultiplayerScore> scores, MultiplayerScores? pivot = null)
+        private async Task<ScoreInfo[]> transformScores(List<MultiplayerScore> scores)
         {
             APIBeatmap?[] beatmaps = await beatmapLookupCache.GetBeatmapsAsync(scores.Select(s => s.BeatmapId).Distinct().ToArray());
 

osu.Game/Screens/OnlinePlay/Playlists/PlaylistItemScoreResultsScreen.cs

@@ -3,7 +3,6 @@
 
 using System.Collections.Generic;
 using System.Linq;
-using System.Threading.Tasks;
 using osu.Game.Online.API;
 using osu.Game.Online.Rooms;
 using osu.Game.Scoring;
@@ -31,11 +30,10 @@ namespace osu.Game.Screens.OnlinePlay.Playlists
 
         protected override APIRequest<MultiplayerScore> CreateScoreRequest() => new ShowPlaylistScoreRequest(RoomId, PlaylistItem.ID, scoreId);
 
-        protected override async Task<ScoreInfo[]> TransformScores(List<MultiplayerScore> scores, MultiplayerScores? pivot = null)
+        protected override void OnScoresAdded(IEnumerable<ScoreInfo> scores)
         {
-            var scoreInfos = await base.TransformScores(scores, pivot);
-            Schedule(() => SelectedScore.Value ??= scoreInfos.SingleOrDefault(s => s.OnlineID == scoreId));
-            return scoreInfos;
+            base.OnScoresAdded(scores);
+            SelectedScore.Value ??= scores.SingleOrDefault(s => s.OnlineID == scoreId);
         }
     }
 }

osu.Game/Screens/OnlinePlay/Playlists/PlaylistItemUserBestResultsScreen.cs

@@ -3,7 +3,6 @@
 
 using System.Collections.Generic;
 using System.Linq;
-using System.Threading.Tasks;
 using osu.Game.Online.API;
 using osu.Game.Online.Rooms;
 using osu.Game.Scoring;
@@ -25,17 +24,12 @@ namespace osu.Game.Screens.OnlinePlay.Playlists
 
         protected override APIRequest<MultiplayerScore> CreateScoreRequest() => new ShowPlaylistUserScoreRequest(RoomId, PlaylistItem.ID, userId);
 
-        protected override async Task<ScoreInfo[]> TransformScores(List<MultiplayerScore> scores, MultiplayerScores? pivot = null)
+        protected override void OnScoresAdded(IEnumerable<ScoreInfo> scores)
         {
-            var scoreInfos = await base.TransformScores(scores, pivot);
+            base.OnScoresAdded(scores);
 
-            Schedule(() =>
-            {
-                // Prefer selecting the local user's score, or otherwise default to the first visible score.
-                SelectedScore.Value ??= scoreInfos.FirstOrDefault(s => s.UserID == userId) ?? scoreInfos.FirstOrDefault();
-            });
-
-            return scoreInfos;
+            // Prefer selecting the local user's score, or otherwise default to the first visible score.
+            SelectedScore.Value ??= scores.FirstOrDefault(s => s.UserID == userId) ?? scores.FirstOrDefault();
         }
     }
 }

osu.Game/Screens/Ranking/ResultsScreen.cs

@@ -357,8 +357,18 @@ namespace osu.Game.Screens.Ranking
                 // This can happen if for example a beatmap that is part of a playlist hasn't been played yet.
                 VerticalScrollContent.Add(new MessagePlaceholder(LeaderboardStrings.NoRecordsYet));
             }
+
+            OnScoresAdded(scores);
         });
 
+        /// <summary>
+        /// Invoked after online scores are fetched and added to the list.
+        /// </summary>
+        /// <param name="scores">The scores that were added.</param>
+        protected virtual void OnScoresAdded(IEnumerable<ScoreInfo> scores)
+        {
+        }
+
         public override void OnEntering(ScreenTransitionEvent e)
         {
             base.OnEntering(e);