Remove nullable disable annotation in the settings namespace.

osu.Game.Rulesets.Karaoke/Screens/Settings/Header.cs

@@ -1,8 +1,6 @@
 // Copyright (c) andy840119 <[email protected]>. Licensed under the GPL Licence.
 // See the LICENCE file in the repository root for full licence text.
 
-#nullable disable
-
 using System.Collections.Generic;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
@@ -25,7 +23,7 @@ public partial class Header : Container
     public const float HEIGHT = 75;
 
     [Resolved]
-    private KaraokeSettingsColourProvider colourProvider { get; set; }
+    private KaraokeSettingsColourProvider colourProvider { get; set; } = null!;
 
     private readonly Box background;
     private readonly KaraokeConfigHeaderTitle title;

osu.Game.Rulesets.Karaoke/Screens/Settings/KaraokeSettings.cs

@@ -1,8 +1,6 @@
 // Copyright (c) andy840119 <[email protected]>. Licensed under the GPL Licence.
 // See the LICENCE file in the repository root for full licence text.
 
-#nullable disable
-
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
 using osu.Framework.Extensions.Color4Extensions;
@@ -31,7 +29,7 @@ public partial class KaraokeSettings : OsuScreen
     private Bindable<SettingsSection> selectedSection = new();
 
     [Cached]
-    private Bindable<SettingsSubsection> selectedSubsection = new();
+    private Bindable<SettingsSubsection?> selectedSubsection = new();
 
     private readonly KaraokeConfigWaveContainer waves;
     private readonly Box background;

osu.Game.Rulesets.Karaoke/Screens/Settings/KaraokeSettingsColourProvider.cs

@@ -1,8 +1,6 @@
 // Copyright (c) andy840119 <[email protected]>. Licensed under the GPL Licence.
 // See the LICENCE file in the repository root for full licence text.
 
-#nullable disable
-
 using System;
 using osu.Game.Overlays.Settings;
 using osu.Game.Rulesets.Karaoke.Screens.Settings.Sections;

osu.Game.Rulesets.Karaoke/Screens/Settings/KaraokeSettingsPanel.cs

@@ -1,8 +1,6 @@
 // Copyright (c) andy840119 <[email protected]>. Licensed under the GPL Licence.
 // See the LICENCE file in the repository root for full licence text.
 
-#nullable disable
-
 using System.Collections.Generic;
 using System.Linq;
 using osu.Framework.Allocation;
@@ -25,7 +23,7 @@ public partial class KaraokeSettingsPanel : SettingsPanel
 {
     public new const float WIDTH = 300;
 
-    private Box hoverBackground;
+    private Box hoverBackground = null!;
 
     protected override IEnumerable<SettingsSection> CreateSections() => new SettingsSection[]
     {
@@ -75,7 +73,7 @@ public void ScrollToSection(SettingsSection settingsSection)
     public IReadOnlyList<SettingsSection> Sections => SectionsContainer.Children;
 
     [BackgroundDependencyLoader]
-    private void load(KaraokeSettingsColourProvider colourProvider, Bindable<SettingsSection> selectedSection, Bindable<SettingsSubsection> selectedSubsection)
+    private void load(KaraokeSettingsColourProvider colourProvider, Bindable<SettingsSection> selectedSection, Bindable<SettingsSubsection?> selectedSubsection)
     {
         initialSelectionContainer();
         initialContentContainer();

osu.Game.Rulesets.Karaoke/Screens/Settings/KaraokeSettingsSection.cs

@@ -1,8 +1,6 @@
 // Copyright (c) andy840119 <[email protected]>. Licensed under the GPL Licence.
 // See the LICENCE file in the repository root for full licence text.
 
-#nullable disable
-
 using System.Linq;
 using osu.Framework.Allocation;
 using osu.Framework.Graphics;

osu.Game.Rulesets.Karaoke/Screens/Settings/KaraokeSettingsSubsection.cs

@@ -1,8 +1,6 @@
 // Copyright (c) andy840119 <[email protected]>. Licensed under the GPL Licence.
 // See the LICENCE file in the repository root for full licence text.
 
-#nullable disable
-
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
 using osu.Framework.Input.Events;
@@ -15,10 +13,10 @@ namespace osu.Game.Rulesets.Karaoke.Screens.Settings;
 public abstract partial class KaraokeSettingsSubsection : SettingsSubsection
 {
     [Resolved]
-    protected KaraokeRulesetConfigManager Config { get; private set; }
+    protected KaraokeRulesetConfigManager Config { get; private set; } = null!;
 
     [Resolved]
-    private Bindable<SettingsSubsection> selectedSubsection { get; set; }
+    private Bindable<SettingsSubsection?> selectedSubsection { get; set; } = null!;
 
     public virtual SettingsSubsectionPreview CreatePreview() => new UnderConstructionPreview();
 

osu.Game.Rulesets.Karaoke/Screens/Settings/KaraokeVersionManager.cs

@@ -1,8 +1,6 @@
 // Copyright (c) andy840119 <[email protected]>. Licensed under the GPL Licence.
 // See the LICENCE file in the repository root for full licence text.
 
-#nullable disable
-
 using osu.Framework.Allocation;
 using osu.Framework.Development;
 using osu.Framework.Graphics;

osu.Game.Rulesets.Karaoke/Screens/Settings/SettingsFont.cs

@@ -1,8 +1,6 @@
 // Copyright (c) andy840119 <[email protected]>. Licensed under the GPL Licence.
 // See the LICENCE file in the repository root for full licence text.
 
-#nullable disable
-
 using System.Linq;
 using osu.Framework.Bindables;
 using osu.Framework.Extensions;
@@ -32,7 +30,7 @@ private partial class FontSelectionButton : CompositeDrawable, IHasCurrentValue<
         private const float height = 30;
 
         private readonly BindableWithCurrent<FontUsage> current = new();
-        private BindableFontUsage bindableFontUsage;
+        private BindableFontUsage? bindableFontUsage;
 
         private readonly GridContainer grid;
         private readonly SettingsButton fontButton;

osu.Game.Rulesets.Karaoke/Screens/Settings/SettingsLanguage.cs

@@ -1,8 +1,6 @@
 // Copyright (c) andy840119 <[email protected]>. Licensed under the GPL Licence.
 // See the LICENCE file in the repository root for full licence text.
 
-#nullable disable
-
 using System.Globalization;
 using osu.Framework.Bindables;
 using osu.Framework.Extensions;

osu.Game.Rulesets.Karaoke/Screens/Settings/SettingsMicrophoneDeviceDropdown.cs

@@ -1,8 +1,6 @@
 // Copyright (c) andy840119 <[email protected]>. Licensed under the GPL Licence.
 // See the LICENCE file in the repository root for full licence text.
 
-#nullable disable
-
 using System.Collections.Generic;
 using System.Linq;
 using osu.Framework.Allocation;