[MacRuby-devel] Requirements for Interface Builder to correctly parse MacRuby files?

[Paul Howson]

On 02/02/2010, at 2:14 PM, Laurent Sansonetti wrote:

> Hi Paul,
> 
> In theory, splitting files should not be an issue. Keep in mind that the IB parser is very rudimentary at the moment (we are working on a much better solution for a future release), so if you define classes into modules it may not work.
> 
> A good way to know exactly what IB will read is to call the parser by yourself, manually, from the command line:
> 
> $ /Developer/usr/bin/rb_nibtool -f MyController.rb
> 
> You should see on the terminal a property list, basically an array of dictionaries, each one being a class with outlets/actions sub-dictionaries.
> 
> Laurent

Thanks Laurent. That flushed out the problem. When re-opening classes across multiple files, I was not declaring the superclass relationship again. e.g.

FILE 1:

class A < NSDocument
      …
end

FILE 2:

class A
      …
end

When the Ruby compiler sees FILE 2 it already knows A is a subclass of NSDocument. But the Interface Builder parser obviously treats files in isolation and needs to be told about that relationship in each file.

Problem solved.

Paul