module-navigation-tool/Editor/Toolbar/Settings/ToolbarSettingsProvider.cs

using System.Collections.Generic;
using UnityEditor;
using UnityEngine;

namespace Module.NavigationTool.Editor.Toolbar
{
    internal static class ToolbarSettingsProvider
    {
        private static Styles STYLES;
        private static IToolbarSettings[] SETTINGS;
        
        [SettingsProvider]
        public static SettingsProvider GetProvider()
        {
            Initialize();
            var keywords = new List<string> { "Toolbar" };

            for (var i = 0; i < SETTINGS.Length; i++)
            {
                keywords.Add(SETTINGS[i].Title);
            }

            return new SettingsProvider("Module/Toolbar", SettingsScope.User)
            {
                label = "Toolbar",
                keywords = keywords.ToArray(),
                guiHandler = OnGui
            };
        }

        private static void Initialize()
        {
            if (STYLES == null)
                STYLES = new Styles();
            if (SETTINGS == null)
                SETTINGS = ToolbarSettingsUtility.GetAllSettings();
        }

        private static void OnGui(string searchContext)
        {
            Initialize();
            STYLES.Initialize(GUI.skin);

            EditorGUILayout.BeginVertical(STYLES.settingsGroup);
            {
                for (var i = 0; i < SETTINGS.Length; i++)
                {
                    IToolbarSettings settings = SETTINGS[i];
                    
                    EditorGUILayout.LabelField(settings.Title, EditorStyles.boldLabel);
                    settings.Draw();
                    EditorGUILayout.Space();
                }
            }
            EditorGUILayout.EndVertical();
        }
    }
}