//--------------------------------------------------------
//    [Author]:           第二世界
//    [  Date ]:           Monday, July 31, 2017
//--------------------------------------------------------
using UnityEngine;
using System.Collections;
using UnityEngine.EventSystems;
using UnityEngine.Events;
using System;

    public class PointerDownUp : MonoBehaviour, IPointerDownHandler, IPointerUpHandler, IPointerClickHandler
    {

        [SerializeField]
        Action m_OnPointerDown;

        [SerializeField]
        Action m_OnPointerUp;

        [SerializeField]
        Action m_OnPointerClick;

        public void OnPointerUp(PointerEventData eventData)
        {
            m_OnPointerUp?.Invoke();
        }

        public void OnPointerDown(PointerEventData eventData)
        {
            m_OnPointerDown?.Invoke();
        }

        public void OnPointerClick(PointerEventData eventData)
        {
            m_OnPointerClick?.Invoke();
        }

        public void AddPointerDownListener(Action _action)
        {
            m_OnPointerDown += _action;
        }

        public void AddPointerUpListener(Action _action)
        {
            m_OnPointerUp += _action;
        }

        public void AddPointerClickListener(Action _action)
        {
            m_OnPointerClick += _action;
        }

        public void RemoveAllPointerDownListeners()
        {
            m_OnPointerDown = null;
        }

        public void RemoveAllPointerUpListeners()
        {
            m_OnPointerUp = null;
        }

        public void RemoveAllPointerClickListeners()
        {
            m_OnPointerClick = null;
        }


    }