test/Assets/PerfectWorld/Scripts/UI/GamePlay/SkillUI/Widget/SkillSlotWidget.cs

using System;
using BrewMonster.Assets.PerfectWorld.Scripts.UI.GamePlay;
using UnityEngine;
using UnityEngine.UI;

namespace BrewMonster
{
    public enum SkillSlotType
    {
        Normal= 0,
        AddSkill
    }
    public class SkillSlotWidget : AUIImagePictureBase
    {
        [SerializeField] private SkillSlotType _skillSlotType;
        [SerializeField] private Image _backgroundImage;
        [SerializeField] private Button _button;
        [SerializeField] private Sprite[] _slotBackgrounds;

        public event Action<SkillSlotWidget> OnClickedSkillSlot;

        private void OnValidate()
        {
            var index = (int)_skillSlotType;
            if (index < 0 || index >= _slotBackgrounds.Length)
            {
                BMLogger.LogError("Invalid skill slot type");
            }
            else
            {
                if(_backgroundImage == null) return;
                _backgroundImage.sprite = _slotBackgrounds[index];
            }
        }

        private void OnEnable()
        {
            _button.onClick.AddListener(OnClickedButton);
        }

        private void OnDisable()
        {
            _button.onClick.RemoveListener(OnClickedButton);
        }

        private void OnClickedButton()
        {
            OnClickedSkillSlot?.Invoke(this);
        }
    }
}