com.alicizax.unity.ui.extension/Runtime/RecyclerView/ViewHolder/ViewHolder.cs

using System;
using UnityEngine;

namespace AlicizaX.UI
{
    public abstract class ViewHolder : MonoBehaviour
    {
        private RectTransform rectTransform;
        private Action clickAction;
        private Action pointerEnterAction;
        private Action pointerExitAction;

        internal event Action<ViewHolder> Destroyed;

        public RectTransform RectTransform
        {
            get
            {
                if (rectTransform == null)
                {
                    rectTransform = GetComponent<RectTransform>();
                }

                return rectTransform;
            }
            private set => rectTransform = value;
        }

        public string Name { get; internal set; }

        public int Index { get; internal set; }

        public Vector2 SizeDelta => RectTransform.sizeDelta;

        protected internal virtual void OnRecycled()
        {
        }

        internal void SetInteractionCallbacks(
            Action clickAction = null,
            Action pointerEnterAction = null,
            Action pointerExitAction = null)
        {
            this.clickAction = clickAction;
            this.pointerEnterAction = pointerEnterAction;
            this.pointerExitAction = pointerExitAction;
        }

        public void ClearInteractionCallbacks()
        {
            clickAction = null;
            pointerEnterAction = null;
            pointerExitAction = null;
        }

        protected void InvokeClickAction()
        {
            clickAction?.Invoke();
        }

        protected void InvokePointerEnterAction()
        {
            pointerEnterAction?.Invoke();
        }

        protected void InvokePointerExitAction()
        {
            pointerExitAction?.Invoke();
        }

        protected virtual void OnDestroy()
        {
            Destroyed?.Invoke(this);
            Destroyed = null;
        }
    }
}