private IDisposable SubscribeInternal(string id, UnityMessageDelegate handler)
{
lock (this.stateLock)
{
Subscription subscriptionInfo = null;
Subscription[] list;
if (this.subscriptions.TryGetValue(id, out list))
{
subscriptionInfo = list.FirstOrDefault(m => m.handler == handler);
if (subscriptionInfo == null)
{
Array.Resize(ref list, list.Length + 1);
this.subscriptions[id] = list;
}
}
else
{
list = new Subscription[1];
this.subscriptions.Add(id, list);
}
if (subscriptionInfo == null)
{
subscriptionInfo = new Subscription(
id,
handler,
(self) => this.Unsubscribe(self));
list[list.Length - 1] = subscriptionInfo;
}
return(subscriptionInfo);
}
}
/// <summary> /// Subscribes a new message handler to listen for a given message id. /// </summary> /// <param name="id">The message id.</param> /// <param name="handler">The message handler.</param> /// <returns>Disposable instance that unsubscribes handler when disposed.</returns> public static IDisposable Subscribe(string id, UnityMessageDelegate handler) => UnityMessageManager.instance?.SubscribeInternal(id, handler);
public Subscription(string id, UnityMessageDelegate handler, Action <Subscription> unsubscription)
{
this.id = id;
this.handler = handler;
this.unsubscription = unsubscription;
}