[Pyobjc-dev] Silly Cocoa question

[Jack J. <Jac...@cw...>]

Folks, I think I'm 90% done with the example of embedding Python in an 
existing
ObjC application, but I need a little Cocoa help. Let me first say how 
I'm doing it.
I start with a perfectly normal ObjC PB Project (SimpleComboBox). I add 
three files
to this, PythonGlue.h and PythonGlue.m to Classes, PythonGlue.py to 
Resources, and
I add Python.framework to the frameworks.

PythonGlue.{h,m} implement a slightly magic singleton class. When 
instantiated this
class initializes the Python interpreter, it uses Foundation magic to 
find our resource
folder and it runs the file PythonGlue.py from there. The latter file 
simply adds the
resource folder to sys.path and imports any modules found there.

Now we only need to get the PythonGlue class instantiated and 
everything is hunky-dory.
Turns out this is easy: instantiate it in MainMenu.nib and set that 
object to be
the application's delegate. Presto, everything works! You simply add 
PyObjC source
files to your Resources section and the classes are automatically 
available.

But now I'm stuck with a silly Cocoa question. I've added a class and 
instance
ITunesCommunication to the CDInfoDocument.nib file, added an askITunes: 
action
to this class, instantiated the class, added an "ask iTunes" button and 
connected
the button to the askITunes method of the instance. Created the Python 
code and
it is indeed called.

But in the ITunesCommunication.askITunes_() method the only thing I get 
is a reference
to the button that was pressed. What I need is the CDInfoDocument 
object, the File Owner
for this NIB file (it's an NSDocument subclass). I assume there's a way 
to go from the
button to the window to the document, but I don't know enough Cocoa to 
do this.

Can anyone help?
--
Jack Jansen, <Jac...@cw...>, http://www.cwi.nl/~jack
If I can't dance I don't want to be part of your revolution -- Emma 
Goldman