Add warning if the currently edited collection is not in use anywhere.

Penumbra/Collections/CollectionManager.Active.cs

@@ -20,6 +20,9 @@ public partial class ModCollection
         // The collection currently selected for changing settings.
         public ModCollection Current { get; private set; } = Empty;
 
+        // The collection currently selected is in use either as an active collection or through inheritance.
+        public bool CurrentCollectionInUse { get; private set; }
+
         // The collection used for general file redirections and all characters not specifically named.
         public ModCollection Default { get; private set; } = Empty;
 
@@ -78,6 +81,8 @@ public partial class ModCollection
                     break;
             }
 
+            CurrentCollectionInUse = Characters.Values.Prepend( Default ).SelectMany( c => c.GetFlattenedInheritance() ).Contains( Current );
+
             CollectionChanged.Invoke( type, this[ oldCollectionIdx ], newCollection, characterName );
         }
 

Penumbra/UI/ConfigWindow.Misc.cs

@@ -102,11 +102,8 @@ public partial class ConfigWindow
         };
 
         using var combo  = ImRaii.Combo( label, current.Name );
-        if( !combo )
+        if( combo )
         {
-            return;
-        }
-
             foreach( var collection in Penumbra.CollectionManager.GetEnumeratorWithEmpty().Skip( withEmpty ? 0 : 1 ).OrderBy( c => c.Name ) )
             {
                 using var id = ImRaii.PushId( collection.Index );
@@ -116,4 +113,5 @@ public partial class ConfigWindow
                 }
             }
         }
+    }
 }

Penumbra/UI/ConfigWindow.ModPanel.Header.cs

@@ -12,17 +12,12 @@ namespace Penumbra.UI;
 
 public partial class ConfigWindow
 {
-    private partial class ModPanel : IDisposable
+    private partial class ModPanel
     {
         // We use a big, nice game font for the title.
         private readonly GameFontHandle _nameFont =
             Dalamud.PluginInterface.UiBuilder.GetGameFontHandle( new GameFontStyle( GameFontFamilyAndSize.Jupiter23 ) );
 
-        public void Dispose()
-        {
-            _nameFont.Dispose();
-        }
-
         // Header data.
         private string _modName          = string.Empty;
         private string _modAuthor        = string.Empty;

Penumbra/UI/ConfigWindow.ModsTab.cs

@@ -63,6 +63,10 @@ public partial class ConfigWindow
         DrawInheritedCollectionButton( 3 * buttonSize );
         ImGui.SameLine();
         DrawCollectionSelector( "##collectionSelector", 2 * buttonSize.X, ModCollection.Type.Current, false, null );
+        if( !Penumbra.CollectionManager.CurrentCollectionInUse )
+        {
+            ImGuiUtil.DrawTextButton( "The currently selected collection is not used in any way.", -Vector2.UnitX, Colors.PressEnterWarningBg );
+        }
     }
 
     private static void DrawDefaultCollectionButton( Vector2 width )
@@ -112,7 +116,7 @@ public partial class ConfigWindow
 
     // The basic setup for the mod panel.
     // Details are in other files.
-    private partial class ModPanel
+    private partial class ModPanel : IDisposable
     {
         private readonly ConfigWindow _window;
 
@@ -123,6 +127,11 @@ public partial class ConfigWindow
         public ModPanel( ConfigWindow window )
             => _window = window;
 
+        public void Dispose()
+        {
+            _nameFont.Dispose();
+        }
+
         public void Draw( ModFileSystemSelector selector )
         {
             Init( selector );