Implement lyric assign to singer logic in singer manager.

osu.Game.Rulesets.Karaoke.Tests/Edit/TestSceneSinger.cs

@@ -88,7 +88,7 @@ public void SetUp() => Schedule(() =>
         public void HoverToSingerArea()
         {
             // todo : add this step because description is not showing.
-            AddStep("Move mouse to singer area", () => InputManager.MoveMouseTo(Child, new Vector2(-400,-100)));
+            AddStep("Move mouse to singer area", () => InputManager.MoveMouseTo(Child, new Vector2(-450,-90)));
         }
     }
 }

osu.Game.Rulesets.Karaoke/Edit/Singers/Components/Timeline/LyricBlueprintContainer.cs

@@ -24,8 +24,6 @@ protected override void AddBlueprintFor(HitObject hitObject)
             if (!(hitObject is Lyric))
                 return;
 
-            // todo : check lyric is at the same singer.
-
             base.AddBlueprintFor(hitObject);
         }
 

osu.Game.Rulesets.Karaoke/Edit/Singers/Components/Timeline/LyricTimelineHitObjectBlueprint.cs

@@ -1,6 +1,7 @@
 // Copyright (c) andy840119 <[email protected]>. Licensed under the GPL Licence.
 // See the LICENCE file in the repository root for full licence text.
 
+using osu.Framework.Allocation;
 using osu.Framework.Extensions.IEnumerableExtensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
@@ -24,6 +25,8 @@ public class LyricTimelineHitObjectBlueprint : TimelineHitObjectBlueprint, IHasC
         public LyricTimelineHitObjectBlueprint(HitObject hitObject, Singer singer)
             : base(hitObject)
         {
+            this.singer = singer;
+
             // Use tricty way to hide the timeline's component.
             InternalChildren.ForEach(x => x.Alpha = 0);
 
@@ -52,13 +55,17 @@ public LyricTimelineHitObjectBlueprint(HitObject hitObject, Singer singer)
                     }
                 }
             });
+        }
 
-            if (hitObject is Lyric lyric)
+        [BackgroundDependencyLoader]
+        private void load(SingerManager singerManager)
+        {
+            if (HitObject is Lyric lyric)
             {
                 lyric.SingersBindable.BindValueChanged(e =>
                 {
                     // Check is lyric contains this singer, or default singer
-                    var isSingerMatch = e.NewValue?.Contains(singer.ID) ?? singer.ID == 0;
+                    var isSingerMatch = singerManager.SingerInLyric(singer, lyric);
                     if (isSingerMatch)
                     {
                         Show();

osu.Game.Rulesets.Karaoke/Edit/Singers/Components/Timeline/LyricTimelineSelectionHandler.cs

@@ -1,27 +1,27 @@
 // Copyright (c) andy840119 <[email protected]>. Licensed under the GPL Licence.
 // See the LICENCE file in the repository root for full licence text.
 
+using Lucene.Net.Support;
+using osu.Framework.Allocation;
 using osu.Framework.Graphics.UserInterface;
 using osu.Game.Graphics.UserInterface;
 using osu.Game.Rulesets.Edit;
+using osu.Game.Rulesets.Karaoke.Objects;
 using osu.Game.Screens.Edit.Compose.Components;
 using System.Collections.Generic;
+using System.Linq;
 using static osu.Game.Rulesets.Karaoke.Edit.Components.Timeline.TimelineBlueprintContainer;
 
 namespace osu.Game.Rulesets.Karaoke.Edit.Singers.Components.Timeline
 {
     internal class LyricTimelineSelectionHandler : TimelineSelectionHandler
     {
+        [Resolved]
+        private SingerManager singerManager { get; set; }
+
         public override bool HandleMovement(MoveSelectionEvent moveEvent) => false;
 
         protected override IEnumerable<MenuItem> GetContextMenuItemsForSelection(IEnumerable<SelectionBlueprint> selection)
-        {
-            // todo : make implementation of singers selection.
-            var menu = new List<MenuItem>
-            {
-                new OsuMenuItem("Test1", MenuItemType.Standard, () => { })
-            };
-            return menu.ToArray();
-        }
+            => singerManager.CreateSingerContextMenu(selection.Select(x => x.HitObject).OfType<Lyric>().ToList());
     }
 }

osu.Game.Rulesets.Karaoke/Edit/Singers/SingerManager.cs

@@ -1,12 +1,18 @@
 // Copyright (c) andy840119 <[email protected]>. Licensed under the GPL Licence.
 // See the LICENCE file in the repository root for full licence text.
 
+using Microsoft.EntityFrameworkCore.Internal;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
 using osu.Framework.Graphics;
+using osu.Framework.Graphics.UserInterface;
+using osu.Game.Graphics.UserInterface;
 using osu.Game.Rulesets.Karaoke.Beatmaps;
 using osu.Game.Rulesets.Karaoke.Beatmaps.Metadatas;
+using osu.Game.Rulesets.Karaoke.Objects;
 using osu.Game.Screens.Edit;
+using System.Collections.Generic;
+using System.Linq;
 
 namespace osu.Game.Rulesets.Karaoke.Edit.Singers
 {
@@ -27,5 +33,52 @@ private void load()
                 Singers.AddRange(karaokeBeatmap.SingerMetadata.Singers);
             }
         }
+
+        public IEnumerable<MenuItem> CreateSingerContextMenu(List<Lyric> lyrics)
+        {
+            return Singers.Select(singer => new OsuMenuItem(singer.Name, anySingerInLyric(singer) ? MenuItemType.Highlighted : MenuItemType.Standard, () =>
+            {
+                // if only one lyric
+                if (allSingerInLyric(singer))
+                {
+                    lyrics.ForEach(lyric => RemoveSingerToLyric(singer, lyric));
+                }
+                else
+                {
+                    lyrics.ForEach(lyric => AddSingerToLyric(singer, lyric));
+                }
+            }));
+
+            bool anySingerInLyric(Singer singer) => lyrics.Any(lyric => SingerInLyric(singer, lyric));
+
+            bool allSingerInLyric(Singer singer) => lyrics.All(lyric => SingerInLyric(singer, lyric));
+        }
+
+        public void AddSingerToLyric(Singer singer, Lyric lyric)
+        {
+            if (SingerInLyric(singer, lyric))
+                return;
+
+            var existSingerList = lyric.Singers?.ToList() ?? new List<int>();
+            existSingerList.Add(singer.ID);
+            lyric.Singers = existSingerList.ToArray();
+        }
+
+        public void RemoveSingerToLyric(Singer singer, Lyric lyric)
+        {
+            if (!SingerInLyric(singer, lyric))
+                return;
+
+            lyric.Singers = lyric.Singers?.Where(x => x != singer.ID).ToArray();
+        }
+
+        public bool SingerInLyric(Singer singer, Lyric lyric)
+        {
+            // lyric belongs to default singer if no any singer in lyric.
+            if (lyric.Singers == null || !lyric.Singers.Any())
+                return singer.ID == 0;
+
+            return lyric.Singers?.Contains(singer.ID) ?? false;
+        }
     }
 }