Sending NSResponder events about remotelayerdemo

[krevis]

I'm assuming you're asking in reference to this Stack Overflow question.

This project is just some throwaway test code, and I haven't used it for anything practical. I just put this code together to see if CARemoteLayer worked at all, to answer this other Stack Overflow question and to satisfy my own curiosity.

Sorry if you were expecting Real Authoritative Documented Answers from People Who Know What They're Doing, but this just isn't that kind of situation.

Anyway, if I had to guess, you probably want something like:

1. In your local view, override the NSResponder method you're interested in (e.g. -mouseDown:)
2. It should marshal the arguments into an XPC dictionary (perhaps using NSCoding to serialize objects into data)
3. And send the dictionary over XPC to the service.
4. The service receives the dictionary, unmarshals/deserializes the contents of the message, and does the appropriate thing.

Use -[RLAppDelegate changeColor:] as an example of how to do parts of 2 and 3. RemoteLayerDemoService_peer_event_handler() handles step 4.

The devil's in the details, of course. I suspect it wouldn't make a lot of sense to try to forward every method in NSResponder as-is.

Does that help at all?

[avaidyam]

Yes, yes I am. I actually have used your demo previously in conjunction with TwUI which is a layer-backed UIKit for Mac, and I did get this mostly working, but with major bugs and glitches. Previously I used raw mach ports (shudder) and a simple proxy object (reimplemented NSProxy) to get this to work, as I was targeting 10.6 as well. Since then, I've transitioned to 10.7+, AppKit, and began investigating XPC and CARemoteLayer*.

This post actually helps quite a bit, and I'd mark it as the answer if you'd post it on SO ;)
I'll be experimenting with this and I may fork this repo as an expanded demo!

[avaidyam]

@krevis Almost five years later, the solution to this question has been implemented by Apple in ViewBridge.framework (10.10+) and my exploration into this can be found here.