From c931bae70ec13b10f45c89ad67d223c635046186 Mon Sep 17 00:00:00 2001
From: Shivam <s.r.v.ramkisoen@umail.leidenuniv.nl>
Date: Sat, 16 May 2020 03:07:27 +0200
Subject: [PATCH] Add back button to TournamentScreen and the inputhandler for
 it

---
 .../Screens/Editors/TournamentEditorScreen.cs | 45 ++++++++++++++++++-
 1 file changed, 44 insertions(+), 1 deletion(-)

diff --git a/osu.Game.Tournament/Screens/Editors/TournamentEditorScreen.cs b/osu.Game.Tournament/Screens/Editors/TournamentEditorScreen.cs
index 8e5df72cc8..11cb072c6b 100644
--- a/osu.Game.Tournament/Screens/Editors/TournamentEditorScreen.cs
+++ b/osu.Game.Tournament/Screens/Editors/TournamentEditorScreen.cs
@@ -9,6 +9,9 @@ using osu.Framework.Extensions.IEnumerableExtensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Shapes;
+using osu.Game.Graphics.UserInterface;
+using osu.Game.Input.Bindings;
+using osu.Framework.Input.Bindings;
 using osu.Game.Graphics;
 using osu.Game.Graphics.Containers;
 using osu.Game.Overlays.Settings;
@@ -17,7 +20,7 @@ using osuTK;
 
 namespace osu.Game.Tournament.Screens.Editors
 {
-    public abstract class TournamentEditorScreen<TDrawable, TModel> : TournamentScreen, IProvideVideo
+    public abstract class TournamentEditorScreen<TDrawable, TModel> : TournamentScreen, IProvideVideo, IKeyBindingHandler<GlobalAction>
         where TDrawable : Drawable, IModelBacked<TModel>
         where TModel : class, new()
     {
@@ -25,8 +28,19 @@ namespace osu.Game.Tournament.Screens.Editors
 
         private FillFlowContainer<TDrawable> flow;
 
+        [Resolved(canBeNull: true)]
+        private TournamentSceneManager sceneManager { get; set; }
+
         protected ControlPanel ControlPanel;
 
+        protected virtual bool IsSubScreen => false;
+
+        protected virtual System.Type ParentScreen { get; set; }
+
+        private BackButton backButton;
+
+        private System.Action backAction => () => sceneManager?.SetScreen(ParentScreen);
+
         [BackgroundDependencyLoader]
         private void load()
         {
@@ -70,6 +84,19 @@ namespace osu.Game.Tournament.Screens.Editors
                 }
             });
 
+            if (IsSubScreen)
+            {
+                BackButton.Receptor receptor = new BackButton.Receptor();
+                backButton = new BackButton(receptor)
+                {
+                    Anchor = Anchor.BottomLeft,
+                    Origin = Anchor.BottomLeft,
+                    Action = () => { backAction.Invoke(); }
+                };
+                AddInternal(backButton);
+                backButton.Show();
+            }
+
             Storage.CollectionChanged += (_, args) =>
             {
                 switch (args.Action)
@@ -88,6 +115,22 @@ namespace osu.Game.Tournament.Screens.Editors
                 flow.Add(CreateDrawable(model));
         }
 
+        public bool OnPressed(GlobalAction action)
+        {
+            switch (action)
+            {
+                case GlobalAction.Back:
+                    backAction.Invoke();
+                    return true;
+            }
+
+            return false;
+        }
+
+        public void OnReleased(GlobalAction action)
+        {
+        }
+
         protected abstract TDrawable CreateDrawable(TModel model);
     }
 }