Second commit

Assets/Tremble/Editor/TrembleEditorUtility.cs

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+//
+// This file is part of the Tremble package by Tiny Goose.
+// Copyright (c) 2024-2026 TinyGoose Ltd., All Rights Reserved.
+//
+
+using UnityEditor;
+using UnityEngine;
+
+namespace TinyGoose.Tremble.Editor
+{
+	public static class TrembleEditorUtility
+	{
+		public delegate void OnHierarchyItemCallback(GameObject gameObject, Rect selectionRect);
+
+		public static void RegisterOnHierarchyItem(OnHierarchyItemCallback callback)
+		{
+#if UNITY_6000_5_OR_NEWER
+			EditorApplication.hierarchyWindowItemByEntityIdOnGUI += (id, rect) =>
+			{
+				GameObject go = EditorUtility.EntityIdToObject(id) as GameObject;
+				if (!go)
+					return;
+
+				callback(go, rect);
+			};
+#else
+			EditorApplication.hierarchyWindowItemOnGUI += (id, rect) =>
+			{
+				GameObject go = EditorUtility.InstanceIDToObject(id) as GameObject;
+				if (!go)
+					return;
+
+				callback(go, rect);
+			};
+#endif
+		}
+	}
+}