[Cosmo-dev] The topic is....topics!

[Bobby Rullo]

Hi all,

We've all agreed on the fact that we need some good standard way of  
broadcasting application level events, and that topics is probably a  
good fit. Up till now we haven't done too much with that.

There is right now a problem that I need to solve, and I feel that  
topics (or something  like it) is the only right way to do it. And  
the easiest probably.

Within the collection details dialog box, you can change the display  
name of a collection. The problem is, references to that collection  
do not get updated. I could write code in the dialog box which goes  
and updates all the places that need to be updated (right now I know  
of two - the collection selector and and Cal.currentCollection) but  
that is sort of ugly.

What I'd like to do is publish a "CollectionChanged" event or  
something and have relevant parties subscribe and update themselves  
as necessary. This is a pretty easy, low-impact thing to implement  
and even if it's not perfect, it gets the ball rolling with this  
stuff and forwards the conversation.

The only thing I don't like is that the dialog box code will be doing  
the publishing. Ideally the thing that talks to the server would be  
publishing the topic. But this is hard right now with the way we are  
doing JSON-RPC stuff.

If anyone strongly objects, let me know, or else I'm just going to go  
ahead and see how this works out.

Bobby