Add abstract ModType for ModSection.

osu.Game/Overlays/Mods/AssistedSection.cs

@@ -4,12 +4,14 @@
 using OpenTK.Input;
 using osu.Framework.Allocation;
 using osu.Game.Graphics;
+using osu.Game.Modes;
 
 namespace osu.Game.Overlays.Mods
 {
     public class AssistedSection : ModSection
     {
         protected override Key[] ToggleKeys => new Key[] { Key.Z, Key.X, Key.C, Key.V, Key.B, Key.N, Key.M };
+        public override ModType ModType => ModType.Special;
 
         [BackgroundDependencyLoader]
         private void load(OsuColour colours)

osu.Game/Overlays/Mods/DifficultyIncreaseSection.cs

@@ -4,12 +4,14 @@
 using OpenTK.Input;
 using osu.Framework.Allocation;
 using osu.Game.Graphics;
+using osu.Game.Modes;
 
 namespace osu.Game.Overlays.Mods
 {
     public class DifficultyIncreaseSection : ModSection
     {
         protected override Key[] ToggleKeys => new Key[] { Key.A, Key.S, Key.D, Key.F, Key.G, Key.H, Key.J, Key.K, Key.L };
+        public override ModType ModType => ModType.DifficultyIncrease;
 
         [BackgroundDependencyLoader]
         private void load(OsuColour colours)

osu.Game/Overlays/Mods/DifficultyReductionSection.cs

@@ -4,12 +4,14 @@
 using OpenTK.Input;
 using osu.Framework.Allocation;
 using osu.Game.Graphics;
+using osu.Game.Modes;
 
 namespace osu.Game.Overlays.Mods
 {
     public class DifficultyReductionSection : ModSection
     {
         protected override Key[] ToggleKeys => new Key[] { Key.Q, Key.W, Key.E, Key.R, Key.T, Key.Y, Key.U, Key.I, Key.O, Key.P };
+        public override ModType ModType => ModType.DifficultyReduction;
 
         [BackgroundDependencyLoader]
         private void load(OsuColour colours)

osu.Game/Overlays/Mods/ModSection.cs

@@ -22,6 +22,7 @@ namespace osu.Game.Overlays.Mods
 
         public Action<Mod> Action;
         protected abstract Key[] ToggleKeys { get; }
+        public abstract ModType ModType { get; }
 
         public string Header
         {

osu.Game/Overlays/Mods/ModSelectOverlay.cs

@@ -41,34 +41,8 @@ namespace osu.Game.Overlays.Mods
         private void modeChanged(object sender, EventArgs eventArgs)
         {
             var ruleset = Ruleset.GetRuleset(PlayMode);
-
+            foreach (ModSection section in modSectionsContainer.Children)
-            modSectionsContainer.Children = new ModSection[]
+                section.Buttons = ruleset.GetModsFor(section.ModType).Select(m => new ModButton(m)).ToArray();
-            {
-                new DifficultyReductionSection
-                {
-                    RelativeSizeAxes = Axes.X,
-                    Origin = Anchor.TopCentre,
-                    Anchor = Anchor.TopCentre,
-                    Action = modButtonPressed,
-                    Buttons = ruleset.GetModsFor(ModType.DifficultyReduction).Select(m => new ModButton(m)).ToArray(),
-                },
-                new DifficultyIncreaseSection
-                {
-                    RelativeSizeAxes = Axes.X,
-                    Origin = Anchor.TopCentre,
-                    Anchor = Anchor.TopCentre,
-                    Action = modButtonPressed,
-                    Buttons = ruleset.GetModsFor(ModType.DifficultyIncrease).Select(m => new ModButton(m)).ToArray(),
-                },
-                new AssistedSection
-                {
-                    RelativeSizeAxes = Axes.X,
-                    Origin = Anchor.TopCentre,
-                    Anchor = Anchor.TopCentre,
-                    Action = modButtonPressed,
-                    Buttons = ruleset.GetModsFor(ModType.Special).Select(m => new ModButton(m)).ToArray(),
-                },
-            };
         }
 
         [BackgroundDependencyLoader(permitNulls: true)]
@@ -298,6 +272,30 @@ namespace osu.Game.Overlays.Mods
                             AutoSizeAxes = Axes.Y,
                             Spacing = new Vector2(0f, 10f),
                             Width = content_width,
+                            Children = new ModSection[]
+                            {
+                                new DifficultyReductionSection
+                                {
+                                    RelativeSizeAxes = Axes.X,
+                                    Origin = Anchor.TopCentre,
+                                    Anchor = Anchor.TopCentre,
+                                    Action = modButtonPressed,
+                                },
+                                new DifficultyIncreaseSection
+                                {
+                                    RelativeSizeAxes = Axes.X,
+                                    Origin = Anchor.TopCentre,
+                                    Anchor = Anchor.TopCentre,
+                                    Action = modButtonPressed,
+                                },
+                                new AssistedSection
+                                {
+                                    RelativeSizeAxes = Axes.X,
+                                    Origin = Anchor.TopCentre,
+                                    Anchor = Anchor.TopCentre,
+                                    Action = modButtonPressed,
+                                },
+                            }
                         },
                         // Footer
                         new Container