Add respective query params to GetScoreRequest based on selected tab.

osu.Game/Online/API/Requests/GetScoresRequest.cs

@@ -10,19 +10,22 @@ using osu.Game.Rulesets;
 using osu.Game.Users;
 using osu.Game.Rulesets.Replays;
 using osu.Game.Rulesets.Scoring;
+using osu.Game.Screens.Select.Leaderboards;
 
 namespace osu.Game.Online.API.Requests
 {
     public class GetScoresRequest : APIRequest<GetScoresResponse>
     {
         private readonly BeatmapInfo beatmap;
+        private readonly LeaderboardScope scope;
 
-        public GetScoresRequest(BeatmapInfo beatmap)
+        public GetScoresRequest(BeatmapInfo beatmap, LeaderboardScope scope = LeaderboardScope.Global)
         {
             if (!beatmap.OnlineBeatmapID.HasValue)
                 throw new InvalidOperationException($"Cannot lookup a beatmap's scores without having a populated {nameof(BeatmapInfo.OnlineBeatmapID)}.");
 
             this.beatmap = beatmap;
+            this.scope = scope;
 
             Success += onSuccess;
         }
@@ -33,7 +36,25 @@ namespace osu.Game.Online.API.Requests
                 score.ApplyBeatmap(beatmap);
         }
 
-        protected override string Target => $@"beatmaps/{beatmap.OnlineBeatmapID}/scores";
+        private string mapScopeToQuery()
+        {
+            switch(scope)
+            {
+                case LeaderboardScope.Global:
+                    return @"?type=global";
+
+                case LeaderboardScope.Friends:
+                    return @"?type=friend";
+
+                case LeaderboardScope.Country:
+                    return @"?type=country";
+
+                default:
+                    return String.Empty;
+            }
+        }
+
+        protected override string Target => $@"beatmaps/{beatmap.OnlineBeatmapID}/scores{mapScopeToQuery()}";
     }
 
     public class GetScoresResponse

osu.Game/Screens/Select/BeatmapDetailArea.cs

@@ -52,6 +52,7 @@ namespace osu.Game.Screens.Select
 
                             default:
                                 Details.Hide();
+                                Leaderboard.Scope = (LeaderboardScope) tab - 1;
                                 Leaderboard.Show();
                                 break;
                         }

osu.Game/Screens/Select/Leaderboards/Leaderboard.cs

@@ -74,6 +74,19 @@ namespace osu.Game.Screens.Select.Leaderboards
             }
         }
 
+        private LeaderboardScope scope = LeaderboardScope.Global;
+        public LeaderboardScope Scope
+        {
+            get { return scope; }
+            set
+            {
+                if (value == scope) return;
+
+                scope = value;
+                updateScores();
+            }
+        }
+
         public Leaderboard()
         {
             Children = new Drawable[]
@@ -120,6 +133,11 @@ namespace osu.Game.Screens.Select.Leaderboards
         {
             if (!IsLoaded) return;
 
+            if (Scope == LeaderboardScope.Local)
+            {
+                // TODO: get local scores from wherever here.
+            }
+
             Scores = null;
             getScoresRequest?.Cancel();
 
@@ -127,7 +145,7 @@ namespace osu.Game.Screens.Select.Leaderboards
 
             loading.Show();
 
-            getScoresRequest = new GetScoresRequest(Beatmap);
+            getScoresRequest = new GetScoresRequest(Beatmap, Scope);
             getScoresRequest.Success += r =>
             {
                 Scores = r.Scores;
@@ -165,4 +183,12 @@ namespace osu.Game.Screens.Select.Leaderboards
             }
         }
     }
+
+    public enum LeaderboardScope
+    {
+        Local,
+        Country,
+        Global,
+        Friends,
+    }
 }