Add basic localisation strings for new mod select

osu.Game/Localisation/CommonStrings.cs

@@ -59,6 +59,16 @@ namespace osu.Game.Localisation
         /// </summary>
         public static LocalisableString Importing => new TranslatableString(getKey(@"importing"), @"Importing...");
 
+        /// <summary>
+        /// "Deselect All"
+        /// </summary>
+        public static LocalisableString DeselectAll => new TranslatableString(getKey(@"deselect_all"), @"Deselect All");
+
+        /// <summary>
+        /// "Select All"
+        /// </summary>
+        public static LocalisableString SelectAll => new TranslatableString(getKey(@"select_all"), @"Select All");
+
         private static string getKey(string key) => $@"{prefix}:{key}";
     }
 }

osu.Game/Localisation/ModSelectScreenStrings.cs

@@ -0,0 +1,29 @@
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+using osu.Framework.Localisation;
+
+namespace osu.Game.Localisation
+{
+    public static class ModSelectScreenStrings
+    {
+        private const string prefix = @"osu.Game.Resources.Localisation.ModSelectScreen";
+
+        /// <summary>
+        /// "Mod Select"
+        /// </summary>
+        public static LocalisableString ModSelectTitle => new TranslatableString(getKey(@"mod_select_title"), @"Mod Select");
+
+        /// <summary>
+        /// "Mods provide different ways to enjoy gameplay. Some have an effect on the score you can achieve during ranked play. Others are just for fun."
+        /// </summary>
+        public static LocalisableString ModSelectDescription => new TranslatableString(getKey(@"mod_select_description"), @"Mods provide different ways to enjoy gameplay. Some have an effect on the score you can achieve during ranked play. Others are just for fun.");
+
+        /// <summary>
+        /// "Mod Customisation"
+        /// </summary>
+        public static LocalisableString ModCustomisation => new TranslatableString(getKey(@"mod_customisation"), @"Mod Customisation");
+
+        private static string getKey(string key) => $@"{prefix}:{key}";
+    }
+}

osu.Game/Overlays/Mods/ModSelectScreen.cs

@@ -23,6 +23,7 @@ using osu.Game.Input.Bindings;
 using osu.Game.Rulesets.Mods;
 using osuTK;
 using osuTK.Input;
+using osu.Game.Localisation;
 
 namespace osu.Game.Overlays.Mods
 {
@@ -58,12 +59,12 @@ namespace osu.Game.Overlays.Mods
         {
             customisationButton = new ShearedToggleButton(200)
             {
-                Text = "Mod Customisation",
+                Text = ModSelectScreenStrings.ModCustomisation,
                 Active = { BindTarget = customisationVisible }
             },
             new ShearedButton(200)
             {
-                Text = "Deselect All",
+                Text = CommonStrings.DeselectAll,
                 Action = DeselectAll
             }
         };
@@ -80,8 +81,8 @@ namespace osu.Game.Overlays.Mods
         [BackgroundDependencyLoader]
         private void load()
         {
-            Header.Title = "Mod Select";
+            Header.Title = ModSelectScreenStrings.ModSelectTitle;
-            Header.Description = "Mods provide different ways to enjoy gameplay. Some have an effect on the score you can achieve during ranked play. Others are just for fun.";
+            Header.Description = ModSelectScreenStrings.ModSelectDescription;
 
             AddRange(new Drawable[]
             {

osu.Game/Screens/OnlinePlay/FreeModSelectScreen.cs

@@ -8,6 +8,7 @@ using osu.Game.Graphics.UserInterface;
 using osu.Game.Overlays.Mods;
 using osu.Game.Rulesets.Mods;
 using osuTK.Input;
+using osu.Game.Localisation;
 
 namespace osu.Game.Screens.OnlinePlay
 {
@@ -34,14 +35,14 @@ namespace osu.Game.Screens.OnlinePlay
             {
                 Anchor = Anchor.BottomLeft,
                 Origin = Anchor.BottomLeft,
-                Text = "Select All",
+                Text = CommonStrings.SelectAll,
                 Action = SelectAll
             },
             new ShearedButton(200)
             {
                 Anchor = Anchor.BottomLeft,
                 Origin = Anchor.BottomLeft,
-                Text = "Deselect All",
+                Text = CommonStrings.DeselectAll,
                 Action = DeselectAll
             }
         };