using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.EventSystems;

namespace BF
{
    public class TutorialClickArea : MonoBehaviour, IPointerDownHandler, IPointerUpHandler, IPointerEnterHandler, IPointerExitHandler, ICancelHandler
    {
        private Transform targetTrans;
        public void SetTargetTransform(Transform target)
        {
            if (target)
            {
                this.targetTrans = target;
            }
            else
            {
                this.targetTrans = null;
            }
        }

        public void ClearTargetTransform()
        {
            this.targetTrans = null;
        }

        //监听按下
        public void OnPointerDown(PointerEventData eventData)
        {
            if (targetTrans)
            {
                ExecuteEvents.Execute(targetTrans.gameObject, eventData, ExecuteEvents.pointerDownHandler);
            }
        }

        //监听抬起
        public void OnPointerUp(PointerEventData eventData)
        {
            if (targetTrans)
            {
                ExecuteEvents.Execute(targetTrans.gameObject, eventData, ExecuteEvents.pointerUpHandler);
            }
        }

        public void OnPointerEnter(PointerEventData eventData)
        {
            if (targetTrans)
            {
                ExecuteEvents.Execute(targetTrans.gameObject, eventData, ExecuteEvents.pointerEnterHandler);
            }
        }

        public void OnPointerExit(PointerEventData eventData)
        {
            if (targetTrans)
            {
                ExecuteEvents.Execute(targetTrans.gameObject, eventData, ExecuteEvents.pointerExitHandler);
            }
        }

        public void OnCancel(BaseEventData eventData)
        {
            if (targetTrans)
            {
                ExecuteEvents.Execute(targetTrans.gameObject, eventData, ExecuteEvents.cancelHandler);
            }
        }
    }
}