Re: [Pyobjc-dev] NibLoader.py: parsing nibs at runtime

[<bb...@ma...>]

On Thursday, November 14, 2002, at 07:09 PM, Just van Rossum wrote:
> Today, instead of learning how to do useful things with Cocoa <wink>, 
> I wrote a
> replacement for mknibwrapper/objc.classnib.py, that does the same 
> thing at
> runtime, making nibwrapper.py files superfluous.

Excellent.

> This abviously has some startup time hit, but it seems quite quick. 
> Not that I
> think that having to generate nibwrapper.py files is all that bad, I 
> was just
> looking for an opportunity to learn a thing or two, eg. about 
> metaclasses...

The startup is minor in comparison to other startup issues and to the 
unarchival of the object graph contained in the NIB [I would think].   
Small price to pay in return for one less dependency within the 
development environment.

> It will parse all nibs specified and will build dummy test classes for 
> all found
> nib classes and print some blurb to stdout. I've tested this on a few 
> nibs found
> in apps that came with the OS as well as with all the nibs in the 
> Examples
> folder, and apart from some classes that don't seem to have a 
> SUPERCLASS
> attribute, building the test classes seems to work.

If a class doesn't have a SUPERCLASS, it should default to NSObject, I 
would think.  I'll look into this as I convert some of my projects over 
to using NibLoader.

> Obviously much of the code is ripped straight from objc/classnib.py.
>
> Useful?

Very.

Added to the CVS repository as Lib/AppKit/NibLoader.py.   I modified it 
to skip FirstResponder -- a class does not need to be created for 
FirstResponder (target/action directed at first responder indicates to 
the event handling system that the action should be sent to the first 
object in the responder chain that responds to the action).

I also added an addNibFromBundle() function that can be used like this:

     NibLoader.addNibFromBundle( "MainMenu.nib" )

It takes an optional second argument if you want to point it at a 
particular bundle or framework;  defaults to NSBundle.mainBundle().   
It uses NSBundle's pathForResource:ofType: method to find the NIB and, 
as such, will automatically load the NIB of the correct language in 
localized apps.

Ronald:  Does this supersede classnib?  I.e. should classnib be removed?

b.bum


b.bum
No Chunks...
	... No Foul!