[Pythonmac-SIG] Document-based app

[ecir hana]

Dear list,

I'm trying to create a simple document-based app in Python and Cocoa. I'm
not using PyObjC but another library called "cocoapy" (
http://code.google.com/p/cocoa-python/source/browse/). So far I really like
but I ran into one issue. When I write the app in Objective C it works but
when I translate it into Python it breaks. I thought it might have
something to do with "NSDocumentClass" from Info.plist not being recognized
by sharedDocumentController but I'm not sure. Please, would you be so kind
and look at the following code, I'm very new into all this so perhaps I'm
missing something.

# Info.plist
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple Computer//DTD PLIST 1.0//EN" "
http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
    <key>CFBundleDocumentTypes</key>
    <array>
        <dict>
            <key>CFBundleTypeExtensions</key>
            <array>
                <string>simple</string>
            </array>
            <key>CFBundleTypeName</key>
            <string>simple</string>
            <key>CFBundleTypeRole</key>
            <string>Editor</string>
            <key>NSDocumentClass</key>
            <string>SimpleDocument</string>
        </dict>
    </array>
    <key>CFBundleExecutable</key>
    <string>simple</string>
    <key>CFBundleName</key>
    <string>Simple</string>
</dict>
</plist>

# simple
# ... some setup from bundlebuilder.py
os.execve(executable, sys.argv, os.environ)

# simple.py
from cocoapy import *

class SimpleDocumentImplementation(object):
    SimpleDocument = ObjCSubclass('NSDocument', 'SimpleDocument')

    @SimpleDocument.method('@')
    def init(self):
        self = ObjCInstance(send_super(self, 'init'))
        window =
initWithContentRect_styleMask_backing_defer(NSMakeRect(100, 100, 480, 320),
NSTitledWindowMask, NSBackingStoreBuffered, True)
        window.makeKeyAndOrderFront_(None)
        return self

if __name__ == '__main__':
    NSAutoreleasePool = ObjCClass('NSAutoreleasePool')
    NSApplication = ObjCClass('NSApplication')
    NSWindow = ObjCClass('NSWindow')
    NSDocumentController = ObjCClass('NSDocumentController')
    SimpleDocument = ObjCClass('SimpleDocument')

    pool = NSAutoreleasePool.alloc().init()
    app = NSApplication.sharedApplication()
    controller = NSDocumentController.sharedDocumentController()
    controller.openUntitledDocumentAndDisplay_error_(True, None) # Here it
breaks with "The (null) type doesn't map to any NSDocumentClass." Without
it it still wont open the first default window.
    app.run()

I expect it to open one window at start up, this is what the Objectve C app
does by default. Here it doesn't show anything and when I try to force open
it, it breaks.

Thank you for any kind of help!

Ecir Hana
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