public IDisposable AddTemporalObserver <T>(ITemporalObserver <T> observer, string token, string description = null,
int priority = TemporalContextManager.NewTokenPriority)
{
ITemporalStream stream = m_streams.GetOrAdd(token,
_token =>
{
stream = new TemporalStream <T>(description);
stream.NoObservers += () =>
{
ITemporalStream forNull;
m_streams.TryRemove(token, out forNull);
};
return(stream);
});
TemporalContext <T> ctx = new TemporalContext <T>((ITemporalValueSource <T>)stream, observer, priority);
return(stream.Subscribe(new TemporalContextHelper <T>(ctx, this)));
}
public TemporalContextHelper(TemporalContext <T> context, TemporalContextManager manager)
{
m_context = context;
m_manager = manager;
m_manager.AddTemporalValue("Contexts", new TemporalValue <object>(DateTime.Now.Ticks, m_context));
}