UGUI按钮事件管理

using UnityEngine;
using System.Collections;
using UnityEngine.Events;
using UnityEngine.EventSystems;
public class EventTriggerListener : UnityEngine.EventSystems.EventTrigger {
    public UnityAction<GameObject,PointerEventData> onClick;
    public UnityAction<GameObject,PointerEventData> onDown;
    public UnityAction<GameObject,PointerEventData> onEnter;
    public UnityAction<GameObject,PointerEventData> onExit;
    public UnityAction<GameObject,PointerEventData> onUp;
    public UnityAction<GameObject,BaseEventData> onSelect;
    public UnityAction<GameObject,BaseEventData> onUpdateSelect;
    static public EventTriggerListener Get(GameObject go)
    {
        EventTriggerListener listener = go.GetComponent<EventTriggerListener>();
        if (listener == null) listener = go.AddComponent<EventTriggerListener>();
        return listener;
    }
    public override void OnPointerClick(PointerEventData eventData)
    {
        if (onClick != null) onClick(gameObject, eventData);
    }
    public override void OnPointerDown(PointerEventData eventData)
    {
        if (onDown != null) onDown(gameObject,eventData);
    }
    public override void OnPointerEnter(PointerEventData eventData)
    {
        if (onEnter != null) onEnter(gameObject,eventData);
    }
    public override void OnPointerExit(PointerEventData eventData)
    {
        if (onExit != null) onExit(gameObject,eventData);
    }
    public override void OnPointerUp(PointerEventData eventData)
    {
        if (onUp != null) onUp(gameObject,eventData);
    }
    public override void OnSelect(BaseEventData eventData)
    {
        if (onSelect != null) onSelect(gameObject,eventData);
    }
    public override void OnUpdateSelected(BaseEventData eventData)
    {
        if (onUpdateSelect != null) onUpdateSelect(gameObject,eventData);
    }
}