Add OsuFocusedOverlayContainer with predefined sounds.

osu.Game/Graphics/Containers/OsuFocusedOverlayContainer.cs

@@ -0,0 +1,38 @@
+// Copyright (c) 2007-2017 ppy Pty Ltd <contact@ppy.sh>.
+// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
+
+using osu.Framework.Allocation;
+using osu.Framework.Audio;
+using osu.Framework.Audio.Sample;
+using osu.Framework.Graphics.Containers;
+
+namespace osu.Game.Graphics.Containers
+{
+    public class OsuFocusedOverlayContainer : FocusedOverlayContainer
+    {
+        private SampleChannel samplePopIn;
+        private SampleChannel samplePopOut;
+
+        [BackgroundDependencyLoader]
+        private void load(AudioManager audio)
+        {
+            samplePopIn = audio.Sample.Get(@"UI/melodic-5");
+            samplePopOut = audio.Sample.Get(@"UI/melodic-4");
+
+            StateChanged += OsuFocusedOverlayContainer_StateChanged;
+        }
+
+        private void OsuFocusedOverlayContainer_StateChanged(VisibilityContainer arg1, Visibility arg2)
+        {
+            switch (arg2)
+            {
+                case Visibility.Visible:
+                    samplePopIn?.Play();
+                    break;
+                case Visibility.Hidden:
+                    samplePopOut?.Play();
+                    break;
+            }
+        }
+    }
+}

osu.Game/Overlays/Chat/ChannelSelectionOverlay.cs

@@ -16,10 +16,11 @@ using osu.Game.Graphics.Backgrounds;
 using osu.Game.Graphics.Sprites;
 using osu.Game.Graphics.UserInterface;
 using osu.Game.Online.Chat;
+using osu.Game.Graphics.Containers;
 
 namespace osu.Game.Overlays.Chat
 {
-    public class ChannelSelectionOverlay : FocusedOverlayContainer
+    public class ChannelSelectionOverlay : OsuFocusedOverlayContainer
     {
         public static readonly float WIDTH_PADDING = 170;
 

osu.Game/Overlays/ChatOverlay.cs

@@ -22,10 +22,11 @@ using osu.Framework.Input;
 using osu.Game.Configuration;
 using osu.Game.Graphics;
 using osu.Game.Overlays.Chat;
+using osu.Game.Graphics.Containers;
 
 namespace osu.Game.Overlays
 {
-    public class ChatOverlay : FocusedOverlayContainer, IOnlineComponent
+    public class ChatOverlay : OsuFocusedOverlayContainer, IOnlineComponent
     {
         private const float textbox_height = 60;
         private const float channel_selection_min_height = 0.3f;

osu.Game/Overlays/Dialog/PopupDialog.cs

@@ -15,10 +15,11 @@ using OpenTK;
 using OpenTK.Graphics;
 using OpenTK.Input;
 using osu.Framework.Graphics.Shapes;
+using osu.Game.Graphics.Containers;
 
 namespace osu.Game.Overlays.Dialog
 {
-    public class PopupDialog : FocusedOverlayContainer
+    public class PopupDialog : OsuFocusedOverlayContainer
     {
         public static readonly float ENTER_DURATION = 500;
         public static readonly float EXIT_DURATION = 200;

osu.Game/Overlays/DialogOverlay.cs

@@ -7,10 +7,11 @@ using osu.Framework.Graphics.Containers;
 using osu.Game.Overlays.Dialog;
 using OpenTK.Graphics;
 using osu.Framework.Graphics.Shapes;
+using osu.Game.Graphics.Containers;
 
 namespace osu.Game.Overlays
 {
-    public class DialogOverlay : FocusedOverlayContainer
+    public class DialogOverlay : OsuFocusedOverlayContainer
     {
         private readonly Container dialogContainer;
         private PopupDialog currentDialog;

osu.Game/Overlays/LoginOverlay.cs

@@ -8,10 +8,11 @@ using osu.Game.Graphics;
 using osu.Game.Overlays.Settings.Sections.General;
 using OpenTK.Graphics;
 using osu.Framework.Graphics.Shapes;
+using osu.Game.Graphics.Containers;
 
 namespace osu.Game.Overlays
 {
-    internal class LoginOverlay : FocusedOverlayContainer
+    internal class LoginOverlay : OsuFocusedOverlayContainer
     {
         private LoginSettings settingsSection;
 

osu.Game/Overlays/MusicController.cs

@@ -24,10 +24,11 @@ using osu.Framework.Threading;
 using osu.Game.Overlays.Music;
 using osu.Game.Graphics.UserInterface;
 using osu.Framework.Graphics.Shapes;
+using osu.Game.Graphics.Containers;
 
 namespace osu.Game.Overlays
 {
-    public class MusicController : FocusedOverlayContainer
+    public class MusicController : OsuFocusedOverlayContainer
     {
         private const float player_height = 130;
 

osu.Game/Overlays/NotificationManager.cs

@@ -9,10 +9,11 @@ using osu.Framework.Graphics.Containers;
 using osu.Game.Overlays.Notifications;
 using OpenTK.Graphics;
 using osu.Framework.Graphics.Shapes;
+using osu.Game.Graphics.Containers;
 
 namespace osu.Game.Overlays
 {
-    public class NotificationManager : FocusedOverlayContainer
+    public class NotificationManager : OsuFocusedOverlayContainer
     {
         private const float width = 320;
 

osu.Game/Overlays/SettingsOverlay.cs

@@ -15,7 +15,7 @@ using osu.Game.Overlays.Settings.Sections;
 
 namespace osu.Game.Overlays
 {
-    public class SettingsOverlay : FocusedOverlayContainer
+    public class SettingsOverlay : OsuFocusedOverlayContainer
     {
         internal const float CONTENT_MARGINS = 10;
 

osu.Game/Overlays/WaveOverlayContainer.cs

@@ -8,10 +8,11 @@ using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics;
 using System;
 using osu.Framework.Graphics.Shapes;
+using osu.Game.Graphics.Containers;
 
 namespace osu.Game.Overlays
 {
-    public abstract class WaveOverlayContainer : FocusedOverlayContainer
+    public abstract class WaveOverlayContainer : OsuFocusedOverlayContainer
     {
         protected const float APPEAR_DURATION = 800;
         protected const float DISAPPEAR_DURATION = 500;

osu.Game/Screens/Select/Options/BeatmapOptionsOverlay.cs

@@ -14,7 +14,7 @@ using osu.Game.Graphics.Containers;
 
 namespace osu.Game.Screens.Select.Options
 {
-    public class BeatmapOptionsOverlay : FocusedOverlayContainer
+    public class BeatmapOptionsOverlay : OsuFocusedOverlayContainer
     {
         private const float transition_duration = 500;
         private const float x_position = 0.2f;

osu.Game/osu.Game.csproj

@@ -77,6 +77,7 @@
     <Compile Include="Beatmaps\Drawables\BeatmapBackgroundSprite.cs" />
     <Compile Include="Beatmaps\DifficultyCalculator.cs" />
     <Compile Include="Graphics\Containers\OsuClickableContainer.cs" />
+    <Compile Include="Graphics\Containers\OsuFocusedOverlayContainer.cs" />
     <Compile Include="Graphics\Cursor\OsuContextMenuContainer.cs" />
     <Compile Include="Graphics\UserInterface\IconButton.cs" />
     <Compile Include="Configuration\SelectionRandomType.cs" />