Re: [Rubycocoa-talk] methodSignature is nil.

[Dave H. <gr...@gr...>]

On Jun 14, 2005, at 12:01 AM, Jonathan Paisley wrote:

> For this to work, you'd need to do 
> NSImage.alloc.initByReferencingFile(blahblah).
>
> However, I there's also NSImage.imageNamed(blahblah) which should work.

Ah. Just when I thought I'd finally managed to really internalize and 
keep separate classes and instantiations, Obj-C rises up and bites me 
with the same thing. Hmm.
	OK, so the NSImage.alloc.initByReferencingFile(blahblah) didn't seem 
to work either, but NSImage.imageNamed(blahblah) worked perfectly. :) 
:)

Except that it doesn't automatically update. If I roll the dice, and 
replace the data in the array, it only updates when I move focus to 
another app or back. I'm pretty sure I know how to fix that, but I 
thought to myself "oho! Wouldn't this be better if I used Bindings 
instead of simulating a datasource?"

Well, maybe, but now I can't get *that* to work. All the examples I 
find are too complicated; they assume that I want to the user to be 
able to edit and fiddle. This is display only, so I need to be able to 
write into the array programmatically and have it update. I think 
what's not working is that I can't convince the table view to actually 
connect to the array.

I'm mostly working off the Intro To Cocoa Bindings article on the 
cocoadevcentral site, which creates a little email mailbox & messages 
app. The final "code" for the project is this:

@interface MyController : NSObject
{
     NSMutableArray * _mailboxes;
}

- (NSMutableArray *) mailboxes;
- (void) setMailboxes: (NSArray *)newMailboxes;

@end


I can't quite figure out how that translates into RubyCocoa. (The 
initial {} part is mystifying, dumb old Obj-C grumble grumble.) Here's 
my best guess so far:

class  MyController < OSX::NSObject
	include OSX

	ib_outlet :mailboxes

	def initialize
		@mailboxes = NSMutableArray.alloc.init
	end
end


There's no 'def setMailboxes' because I don't want mine to be writable, 
so I haven't been trying to figure out the correct syntax for that. 
Anything wrong so far?