Unity Hierarchy Section Creator

using UnityEngine;
using UnityEditor;

/**
 *  Hierarchy Section Creator
 *  Created by Jack Davenport (@memedealer#6607) 2019
 *  Updated: 16/9/2020
 *
 *  HOW TO USE:
 *  1) Create a folder in your Assets called "Editor"
 *  2) Download this script, save it as "HierarchySection.cs"
 *  3) Place it in the Editor folder you created
 *  4) Go to "Window > General > Create Hierarchy Section" to use
 */
namespace JackDavenport.Editor {

    public class HierarchySection : EditorWindow
    {
        string spacerName = "New Section";
        int width = 30;

        void OnGUI()
        {
            spacerName = EditorGUILayout.TextField("Section Name", spacerName);
            width = Mathf.Max(1, EditorGUILayout.IntField("Width", width));

            EditorGUILayout.Space();

            string shortName = spacerName.Trim();
            string error = null;

            if(shortName.Length <= 0) {
                error = "Please enter a name!";
            } else if(shortName.Length > width) {
                error = "Name is longer than allowed width!";
            }

            if (error != null) {
                EditorGUILayout.HelpBox(error, MessageType.Error);
            } else {
                shortName = GenerateText(shortName);
                EditorGUILayout.LabelField("Preview", EditorStyles.boldLabel);
                EditorGUILayout.LabelField(shortName);
            }

            EditorGUILayout.Space();

            EditorGUI.BeginDisabledGroup(error != null);
            if (GUILayout.Button("Create")) {
                CreateItem(shortName);
            }
            EditorGUI.EndDisabledGroup();
        }

        void CreateItem(string objectName)
        {
            GameObject obj = new GameObject(objectName);
            obj.tag = "EditorOnly";
            obj.isStatic = true;
        }

        string GenerateText(string name)
        {
            int padding = (width - name.Length) / 2;
            string text = "|";

            for (int i = 0; i < padding; i++) {
                text += "-";
            }
            text += name;
            for (int i = 0; i < padding; i++) {
                text += "-";
            }
            return text + "|";
        }

        [MenuItem("Window/General/Create Hierarchy Section")]
        static void OpenWindow()
        {
            GetWindow<HierarchySection>("Create Hierarchy Section").Show();
        }

    }

}