internal static Behavior <T> SwitchBImpl <T, T2>(this Behavior <T2> bba)
where T2 : Behavior <T>
{
return(TransactionInternal.Apply(
(trans1, _) =>
{
Lazy <T> za = bba.SampleLazyImpl().MapImpl(ba => ba.SampleImpl());
Stream <T> @out = new Stream <T>(bba.KeepListenersAlive);
MutableListener currentListener = new MutableListener();
void H(TransactionInternal trans2, Behavior <T> ba)
{
IListener cl = currentListener;
cl.Unlisten();
currentListener.SetListenerImpl(ba.Value(trans2).Listen(@out.Node, trans2, @out.Send, false));
}
IListener l1 = bba.Value(trans1).Listen(@out.Node, trans1, H, false);
return @out.UnsafeAttachListener(l1)
.UnsafeAttachListener(currentListener)
.HoldLazyInternal(trans1, za);
},
false));
}
internal static Stream <T> SwitchSImpl <T, T2>(this Behavior <T2> bsa) where T2 : Stream <T>
{
return(TransactionInternal.Apply(
(trans1, _) =>
{
Stream <T> @out = new Stream <T>(bsa.KeepListenersAlive);
MutableListener currentListener = new MutableListener();
void HInitial(TransactionInternal trans2, Stream <T> sa)
{
IListener cl = currentListener;
cl.Unlisten();
currentListener.SetListenerImpl(sa.Listen(@out.Node, trans2, @out.Send, false));
}
void H(TransactionInternal trans2, Stream <T> sa)
{
trans2.Last(
() =>
{
IListener cl = currentListener;
cl.Unlisten();
currentListener.SetListenerImpl(sa.Listen(@out.Node, trans2, @out.Send, true));
});
}
trans1.Prioritized(new Node <T>(), trans2 => HInitial(trans2, bsa.SampleNoTransaction()));
IListener l1 = bsa.Updates().Listen(new Node <T>(), trans1, H, false);
return @out.UnsafeAttachListener(l1).UnsafeAttachListener(currentListener);
},
false));
}
public static void SetListener(this MutableListener m, IListener listener) => m.SetListenerImpl(listener);
public static IListenerWithWeakReference GetListenerWithWeakReference(this MutableListener m)
{
IListener l = m;
return(l.GetListenerWithWeakReference());
}
public static void Unlisten(this MutableListener m)
{
IListener l = m;
l.Unlisten();
}
public static void ClearListener(this MutableListener m) => m.ClearListenerImpl();