封裝好的觀察者模式

public class PengYouquan
{
    #region 單例

    private static PengYouquan instance;

    public static PengYouquan Instance
    {
        get
        {
            if (instance == null)
            {
                instance = new PengYouquan();
            }

            return instance;
        }
    }
    PengYouquan() { }

    #endregion




    public delegate void OnActinHandler(int time);
    public static  OnActinHandler delegate_00;
    

    //委託字典
    Dictionary<string , List<OnActinHandler>> dic = new Dictionary<string , List<OnActinHandler>>();

    /// <summary>
    /// 添加監聽 [給監聽者使用，想監聽了就添加，不需要監聽的就不用管]
    /// </summary>
    /// <param name="protoID"></param>
    /// <param name="handler"></param>
    public void AddEventListener(string  protoID, OnActinHandler handler)
    {
        if (dic.ContainsKey(protoID))
        {
            dic[protoID].Add(handler);
        }
        else
        {
            List<OnActinHandler> lsHandler = new List<OnActinHandler>();
            lsHandler.Add(handler);
            dic.Add(protoID, lsHandler);
            //dic[protoID] = lsHandler;
        }
    }
    /// <summary>
    /// 移除監聽  [給監聽者使用，如果有監聽某條消息必須有移除，否則死人還能收到消息]
    /// </summary>
    /// <param name="protoID"></param>
    /// <param name="handler"></param>
    public void RemoveEventListener(string  protoID, OnActinHandler handler)
    {
        if (dic.ContainsKey(protoID))
        {
            List<OnActinHandler> lsHandler = dic[protoID];
            lsHandler.Remove(handler);
            if (lsHandler.Count == 0)
            {
                dic.Remove(protoID);
            }
        }

    }
    /// <summary>
    /// 派發消息 【給發佈者使用,不監聽的人我就不發給他，誰監聽誰能收到】
    /// </summary>
    /// <param name="protoID"></param>
    /// <param name="arg"></param>
    public void Dispatch(string  protoID, int time)
    {
        if (dic.ContainsKey(protoID))
        {//先根據id將list拿到
            List<OnActinHandler> lsHandler = dic[protoID];
            if (lsHandler != null && lsHandler.Count > 0)
            {
                for (int i = 0; i < lsHandler.Count; i++)
                {
                    //判斷空執行
                    if (lsHandler[i] != null)
                    {
                        lsHandler[i](time);
                    }
                }
            }
        }
    }
}