private MvxSubscriptionToken SubscribeInternal <TMessage>(
Action <TMessage> deliveryAction,
IMvxActionRunner actionRunner,
MvxReference reference,
string?tag,
bool isSticky) where TMessage : MvxMessage
{
if (deliveryAction == null)
{
throw new ArgumentNullException(nameof(deliveryAction));
}
BaseSubscription subscription;
switch (reference)
{
case MvxReference.Strong:
subscription = new StrongSubscription <TMessage>(actionRunner, deliveryAction, tag);
break;
case MvxReference.Weak:
subscription = new WeakSubscription <TMessage>(actionRunner, deliveryAction, tag);
break;
default:
throw new ArgumentOutOfRangeException(nameof(reference), "reference type unexpected " + reference);
}
lock (_locker)
{
if (!_subscriptions.TryGetValue(
typeof(TMessage), out Dictionary <Guid, BaseSubscription> messageSubscriptions))
{
messageSubscriptions = new Dictionary <Guid, BaseSubscription>();
_subscriptions[typeof(TMessage)] = messageSubscriptions;
}
MvxPluginLog.Instance?.Log(LogLevel.Trace, "Adding subscription {0} for {1}", subscription.Id, typeof(TMessage).Name);
messageSubscriptions[subscription.Id] = subscription;
PublishSubscriberChangeMessage <TMessage>(messageSubscriptions);
}
if (isSticky && _messageDictionary.ContainsKey(typeof(TMessage)))
{
deliveryAction.Invoke((TMessage)_messageDictionary[typeof(TMessage)]);
}
return(new MvxSubscriptionToken(
subscription.Id,
() => InternalUnsubscribe <TMessage>(subscription.Id),
deliveryAction));
}
protected BaseSubscription(IMvxActionRunner actionRunner, string tag)
{
_actionRunner = actionRunner;
Id = Guid.NewGuid();
Tag = tag;
}
protected BaseSubscription(IMvxActionRunner actionRunner)
{
_actionRunner = actionRunner;
Id = Guid.NewGuid();
}
public WeakSubscription(IMvxActionRunner actionRunner, Action <TMessage> listener, string tag)
: base(actionRunner, tag)
{
_weakReference = new WeakReference(listener);
}
protected TypedSubscription(IMvxActionRunner actionRunner, string tag)
: base(actionRunner, tag)
{
}
private MvxSubscriptionToken SubscribeInternal <TMessage>(Action <TMessage> deliveryAction, IMvxActionRunner actionRunner, MvxReference reference, string tag)
where TMessage : MvxMessage
{
if (deliveryAction == null)
{
throw new ArgumentNullException(nameof(deliveryAction));
}
BaseSubscription subscription;
switch (reference)
{
case MvxReference.Strong:
subscription = new StrongSubscription <TMessage>(actionRunner, deliveryAction, tag);
break;
case MvxReference.Weak:
subscription = new WeakSubscription <TMessage>(actionRunner, deliveryAction, tag);
break;
default:
throw new ArgumentOutOfRangeException(nameof(reference), "reference type unexpected " + reference);
}
lock (this)
{
Dictionary <Guid, BaseSubscription> messageSubscriptions;
if (!_subscriptions.TryGetValue(typeof(TMessage), out messageSubscriptions))
{
messageSubscriptions = new Dictionary <Guid, BaseSubscription>();
_subscriptions[typeof(TMessage)] = messageSubscriptions;
}
MvxTrace.Trace("Adding subscription {0} for {1}", subscription.Id, typeof(TMessage).Name);
messageSubscriptions[subscription.Id] = subscription;
PublishSubscriberChangeMessage <TMessage>(messageSubscriptions);
}
return(new MvxSubscriptionToken(
subscription.Id,
() => InternalUnsubscribe <TMessage>(subscription.Id),
deliveryAction));
}
protected TypedSubscription(IMvxActionRunner actionRunner)
: base(actionRunner)
{
}
protected BaseSubscription(IMvxActionRunner actionRunner, string tag)
{
_actionRunner = actionRunner;
Id = Guid.NewGuid();
Tag = tag;
}
public StrongSubscription(IMvxActionRunner actionRunner, Action <TMessage> action, string tag)
: base(actionRunner, tag)
{
_action = action;
}
public StrongSubscription(IMvxActionRunner actionRunner, Action <TMessage> action)
: base(actionRunner)
{
_action = action;
}
protected BaseSubscription(IMvxActionRunner actionRunner)
{
_actionRunner = actionRunner;
Id = Guid.NewGuid();
}
