ItemIdPropertyDrawer.cs

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#if UNITY_EDITOR
using System.Linq;
using UnityEditor;
using UnityEngine;
using UnityEngine.UIElements;
 
namespace PixoVR.Event.Editor
{
    [CustomPropertyDrawer(typeof(ItemIDAttribute))]
    public class ItemIdPropertyDrawer : PropertyDrawer
    {
        private static string[] namesCache;
 
        public override VisualElement CreatePropertyGUI(SerializedProperty property)
        {
            namesCache = ItemIDsSettings.GetOrCreateSettings().itemIds.Select(i => i.name).ToArray();
 
            return base.CreatePropertyGUI(property);
        }
 
        public override void OnGUI(Rect rect, SerializedProperty property, GUIContent label)
        {
            if (namesCache == null || namesCache.Length != ItemIDsSettings.GetOrCreateSettings().itemIds.Count)
            {
                namesCache = ItemIDsSettings.GetOrCreateSettings().itemIds.Select(i => i.name).ToArray();
            }
 
            property.intValue = ItemIDsSettings.GetOrCreateSettings()
                                               .itemIds[EditorGUI.Popup(
                                                                        rect,
                                                                        label.text,
                                                                        ItemIDsSettings.GetOrCreateSettings()
                                                                            .itemIds.FindIndex(
                                                                                 i => i.id == property.intValue
                                                                                ),
                                                                        namesCache
                                                                       )]
                                               .id;
        }
    }
}
#endif