/// <summary>
/// 是否包含了指定订阅标识
/// </summary>
/// <param name="token"></param>
/// <returns></returns>
public virtual bool Contains(SubscriptionToken token)
{
lock (Subscriptions)
{
IMsgSubscription subscription = Subscriptions.FirstOrDefault(evt => evt.SubscriptionToken == token);
return(subscription != null);
}
}
/// <summary>
/// 取消匹配的第一个订阅
/// </summary>
/// <param name="subscriber"></param>
public virtual void Unsubscribe(Action <MessageSender, TMessage> subscriber)
{
lock (Subscriptions)
{
IMsgSubscription eventSubscription = Subscriptions.Cast <MsgSubscription <TMessage> >().FirstOrDefault(evt => evt.Action == subscriber);
if (eventSubscription != null)
{
Subscriptions.Remove(eventSubscription);
}
}
}
/// <summary>
/// 取消订阅
/// </summary>
/// <param name="token">订阅标识</param>
public virtual void Unsubscribe(SubscriptionToken token)
{
lock (Subscriptions)
{
IMsgSubscription subscription = Subscriptions.FirstOrDefault(evt => evt.SubscriptionToken == token);
if (subscription != null)
{
Subscriptions.Remove(subscription);
}
}
}
protected virtual SubscriptionToken InternalSubscribe(IMsgSubscription msgSubscription)
{
if (msgSubscription == null)
{
throw new System.ArgumentNullException("msgSubscription");
}
msgSubscription.SubscriptionToken = new SubscriptionToken(Unsubscribe);
lock (Subscriptions)
{
Subscriptions.Add(msgSubscription);
}
return(msgSubscription.SubscriptionToken);
}