LaboratoryProtection/Assets/PMaker/_EditorTool/Scripts/ImagesPrevSetter.cs

using Sirenix.OdinInspector;

using System.Collections.Generic;

using UnityEditor;

using UnityEngine;
using UnityEngine.UI;

[ExecuteAlways]
public class ImagesPrevSetter : MonoBehaviour
{
#if UNITY_EDITOR
    public Sprite[] sprites;
    public List<Image> images;
    public Image prefab;

    public int max;
    [PropertyRange(0, "max")]
    public int index;
    public int last;

    [ExecuteAlways]
    private void Update()
    {
        max = this.images.Count - 1;
        if (index == last)
        {
            return;
        }
        last = index;
        foreach (var item in images)
        {
            item.gameObject.SetActive(false);
        }
        images[index].gameObject.SetActive(true);
    }

    [Button]
    [ContextMenu("SetValue")]
    private void SetValue()
    {
        var items = this.images.ToArray();
        foreach (var item in items)
        {
            if (item == true)
            {
                DestroyImmediate(item);
            }
        }
        images.Clear();

        prefab.gameObject.SetActive(true);
        foreach (var item in sprites)
        {
            var go = UnityEditor.Editor.Instantiate(prefab, this.transform);
            go.sprite = item;
            go.name = item.name;
            images.Add(go);
            EditorUtility.SetDirty(go);
        }
        prefab.gameObject.SetActive(false);
    }
#endif
}