Unity EventTriggerListener.cs 点击事件

using UnityEngine;
using UnityEngine.EventSystems;
public class EventTriggerListener:EventTrigger {
    public delegate void VoidDelegate(GameObject go);
    public delegate void VectorDelegate(GameObject go, Vector2 delta);
    public VoidDelegate onClick;
    public VoidDelegate onDown;
    public VoidDelegate onEnter;
    public VoidDelegate onExit;
    public VoidDelegate onUp;
    public VoidDelegate onSelect;
    public VoidDelegate onUpdateSelect;
    public VectorDelegate onDrag;
    public VoidDelegate onDragOut;
    public static EventTriggerListener Get(GameObject go) {
        if (go == null) {
            Debug.LogError("EventTriggerListener_go_is_NULL");
            return null;
        } else {
            EventTriggerListener listener = go.GetComponent<EventTriggerListener>();
            if (listener == null) listener = go.AddComponent<EventTriggerListener>();
            return listener;
        }
    }
    public override void OnDrag(PointerEventData eventData) {
        onDrag?.Invoke(gameObject, eventData.delta);
    }
    public override void OnEndDrag(PointerEventData eventData) {
        onDragOut?.Invoke(gameObject);
    }
    public override void OnPointerClick(PointerEventData eventData) {
        onClick?.Invoke(gameObject);
    }
    public override void OnPointerDown(PointerEventData eventData) {
        onDown?.Invoke(gameObject);
    }
    public override void OnPointerEnter(PointerEventData eventData) {
        onEnter?.Invoke(gameObject);
    }
    public override void OnPointerExit(PointerEventData eventData) {
        onExit?.Invoke(gameObject);
    }
    public override void OnPointerUp(PointerEventData eventData) {
        onUp?.Invoke(gameObject);
    }
    public override void OnSelect(BaseEventData eventData) {
        onSelect?.Invoke(gameObject);
    }
    public override void OnUpdateSelected(BaseEventData eventData) {
        onUpdateSelect?.Invoke(gameObject);
    }
}