Base class for overlays.

osu.Game/GameModes/Menu/MainMenu.cs

@@ -48,9 +48,7 @@ namespace osu.Game.GameModes.Menu
                             OnMulti = delegate { Push(new Lobby()); },
                             OnTest  = delegate { Push(new TestBrowser()); },
                             OnExit = delegate { Scheduler.AddDelayed(Exit, ButtonSystem.EXIT_DELAY); },
-                            OnSettings = delegate {
+                            OnSettings = osu.Options.ReverseVisibility,
-                                osu.Options.State = osu.Options.State.Reverse();
-                            },
                         }
                     }
                 }

osu.Game/OsuGame.cs

@@ -96,7 +96,7 @@ namespace osu.Game
                 Toolbar = new Toolbar
                 {
                     OnHome = delegate { MainMenu?.MakeCurrent(); },
-                    OnSettings = delegate { Options.State = Options.State.Reverse(); },
+                    OnSettings = Options.ReverseVisibility,
                     OnPlayModeChange = delegate (PlayMode m) { PlayMode.Value = m; },
                     Alpha = 0.001f,
                 },
@@ -134,7 +134,7 @@ namespace osu.Game
             switch (args.Key)
             {
                 case Key.F8:
-                    Chat.State = Chat.State.Reverse();
+                    Chat.ReverseVisibility();
                     return true;
             }
 

osu.Game/Overlays/ChatConsole.cs

@@ -1,12 +1,12 @@
 //Copyright (c) 2007-2016 ppy Pty Ltd <contact@ppy.sh>.
 //Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
 
-using System;
 using System.Collections.Generic;
 using System.Diagnostics;
 using System.Linq;
-using System.Text;
+using OpenTK;
-using System.Threading.Tasks;
+using OpenTK.Graphics;
+using osu.Framework;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Drawables;
@@ -17,15 +17,10 @@ using osu.Game.Online.API;
 using osu.Game.Online.API.Requests;
 using osu.Game.Online.Chat;
 using osu.Game.Online.Chat.Display;
-using OpenTK;
-using OpenTK.Graphics;
-using osu.Framework.Input;
-using OpenTK.Input;
-using osu.Framework;
 
 namespace osu.Game.Overlays
 {
-    public class ChatConsole : Container, IStateful<Visibility>
+    public class ChatConsole : Overlay
     {
         private ChannelDisplay channelDisplay;
 
@@ -69,7 +64,7 @@ namespace osu.Game.Overlays
 
         private long? lastMessageId;
 
-        List<Channel> careChannels;
+        private List<Channel> careChannels;
 
         private void initializeChannels()
         {
@@ -112,7 +107,7 @@ namespace osu.Game.Overlays
             careChannels.Add(channel);
         }
 
-        GetMessagesRequest fetchReq;
+        private GetMessagesRequest fetchReq;
 
         public void FetchNewMessages(APIAccess api)
         {
@@ -140,30 +135,18 @@ namespace osu.Game.Overlays
             api.Queue(fetchReq);
         }
 
-        private Visibility state;
+        private const int transition_length = 500;
 
-        public Visibility State
+        protected override void PopIn()
         {
-            get { return state; }
-
-            set
-            {
-                state = value;
-
-                const int transition_length = 500;
-
-                switch (state)
-                {
-                    case Visibility.Hidden:
-                        MoveToY(-Size.Y, transition_length, EasingTypes.InQuint);
-                        FadeOut(transition_length, EasingTypes.InQuint);
-                        break;
-                    case Visibility.Visible:
             MoveToY(0, transition_length, EasingTypes.OutQuint);
             FadeIn(transition_length, EasingTypes.OutQuint);
-                        break;
+        }
-                }
+
-            }
+        protected override void PopOut()
+        {
+            MoveToY(-Size.Y, transition_length, EasingTypes.InQuint);
+            FadeOut(transition_length, EasingTypes.InQuint);
         }
     }
 }

osu.Game/Overlays/Options.cs

@@ -1,21 +1,20 @@
 //Copyright (c) 2007-2016 ppy Pty Ltd <contact@ppy.sh>.
 //Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
 
-using osu.Framework.Graphics;
-using osu.Framework.Graphics.Containers;
-using osu.Framework.Graphics.Drawables;
-using osu.Framework.Graphics.Transformations;
 using OpenTK;
 using OpenTK.Graphics;
-using osu.Framework.Input;
 using OpenTK.Input;
 using osu.Framework;
+using osu.Framework.Graphics;
+using osu.Framework.Graphics.Drawables;
+using osu.Framework.Graphics.Transformations;
+using osu.Framework.Input;
 
 namespace osu.Game.Overlays
 {
-    public class Options : Container, IStateful<Visibility>
+    public class Options : Overlay
     {
-        const float width = 300;
+        private const float width = 300;
 
         public override void Load(BaseGame game)
         {
@@ -49,28 +48,14 @@ namespace osu.Game.Overlays
             return base.OnKeyDown(state, args);
         }
 
-        private Visibility state;
+        protected override void PopIn()
-
-        public Visibility State
         {
-            get { return state; }
+            MoveToX(0, 300, EasingTypes.Out);
+        }
 
-            set
+        protected override void PopOut()
         {
-                if (value == state) return;
+            MoveToX(-width, 300, EasingTypes.Out);
-
-                state = value;
-
-                switch (state)
-                {
-                    case Visibility.Hidden:
-                        MoveTo(new Vector2(-width, 0), 300, EasingTypes.Out);
-                        break;
-                    case Visibility.Visible:
-                        MoveTo(new Vector2(0, 0), 300, EasingTypes.Out);
-                        break;
-                }
-            }
         }
     }
 }

osu.Game/Overlays/Overlay.cs

@@ -0,0 +1,41 @@
+using osu.Framework;
+using osu.Framework.Graphics.Containers;
+
+namespace osu.Game.Overlays
+{
+    public abstract class Overlay : Container, IStateful<Visibility>
+    {
+        private Visibility state;
+        public Visibility State
+        {
+            get { return state; }
+            set
+            {
+                if (value == state) return;
+                state = value;
+
+                switch (value)
+                {
+                    case Visibility.Hidden:
+                        PopOut();
+                        break;
+                    case Visibility.Visible:
+                        PopIn();
+                        break;
+                }
+            }
+        }
+
+        protected abstract void PopIn();
+
+        protected abstract void PopOut();
+
+        public void ReverseVisibility()
+            => State = (State == Visibility.Visible ? Visibility.Hidden : Visibility.Visible);
+    }
+    public enum Visibility
+    {
+        Hidden,
+        Visible
+    }
+}

osu.Game/Overlays/Toolbar.cs

@@ -1,24 +1,23 @@
 //Copyright (c) 2007-2016 ppy Pty Ltd <contact@ppy.sh>.
 //Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
 
+using System;
+using OpenTK;
+using OpenTK.Graphics;
+using osu.Framework;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Drawables;
-using OpenTK;
-using OpenTK.Graphics;
-using osu.Game.Graphics;
-using osu.Game.Configuration;
-using System;
 using osu.Framework.Graphics.Transformations;
-using osu.Framework.Timing;
+using osu.Game.Configuration;
 using osu.Game.GameModes.Play;
-using osu.Framework;
+using osu.Game.Graphics;
 
 namespace osu.Game.Overlays
 {
-    public class Toolbar : Container, IStateful<Visibility>
+    public class Toolbar : Overlay
     {
-        const float height = 50;
+        private const float height = 50;
 
         public Action OnSettings;
         public Action OnHome;
@@ -26,29 +25,18 @@ namespace osu.Game.Overlays
 
         private ToolbarModeSelector modeSelector;
 
-        private Visibility state;
+        private const int transition_time = 200;
 
-        public Visibility State
+        protected override void PopIn()
         {
-            get { return state; }
-            set
-            {
-                state = value;
-
-                const int transition_time = 200;
-
-                switch (state)
-                {
-                    case Visibility.Hidden:
-                        MoveToY(-Size.Y, transition_time, EasingTypes.InQuint);
-                        FadeOut(transition_time, EasingTypes.InQuint);
-                        break;
-                    case Visibility.Visible:
             MoveToY(0, transition_time, EasingTypes.OutQuint);
             FadeIn(transition_time, EasingTypes.OutQuint);
-                        break;
-                }
         }
+
+        protected override void PopOut()
+        {
+            MoveToY(-Size.Y, transition_time, EasingTypes.InQuint);
+            FadeOut(transition_time, EasingTypes.InQuint);
         }
 
         public override void Load(BaseGame game)

osu.Game/Overlays/Visibility.cs

@@ -1,17 +0,0 @@
-//Copyright (c) 2007-2016 ppy Pty Ltd <contact@ppy.sh>.
-//Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
-
-namespace osu.Game.Overlays
-{
-    public enum Visibility
-    {
-        Hidden,
-        Visible
-    }
-
-    public static class OverlayVisibilityHelper
-    {
-        public static Visibility Reverse(this Visibility input)
-            => input == Visibility.Visible ? Visibility.Hidden : Visibility.Visible;
-    }
-}

osu.Game/osu.Game.csproj

@@ -156,11 +156,11 @@
     <Compile Include="OsuGameBase.cs" />
     <Compile Include="Overlays\ChatConsole.cs" />
     <Compile Include="Overlays\Options.cs" />
+    <Compile Include="Overlays\Overlay.cs" />
     <Compile Include="Overlays\Toolbar.cs" />
     <Compile Include="Overlays\ToolbarButton.cs" />
     <Compile Include="Overlays\ToolbarModeButton.cs" />
     <Compile Include="Overlays\ToolbarModeSelector.cs" />
-    <Compile Include="Overlays\Visibility.cs" />
     <Compile Include="Properties\AssemblyInfo.cs" />
     <Compile Include="Users\User.cs" />
     <Compile Include="VolumeControl.cs" />