Troubles with GtkApplication app menu in Python

[Robert Park <rbpark exolucere ca>]

Hi all,

Recently I've converted my application to single-instance using
GtkApplication and this is working well for me. But now I'm trying to
make an app menu for GNOME Shell, and I am having difficulty doing it.
I'm wondering if it's even implemented for python yet.

In my gtkbuilder UI file, I've got the menu defined exactly like in
the example here:

http://developer.gnome.org/gtk3/3.3/GtkApplication.html

Then in my startup handler, i have this code:

    self.add_action_entries({'app.quit': lambda: self.quit()}, 1, None)
    self.set_app_menu(builder.get_object('app_menu'))

This gives me this error:

Traceback (most recent call last):
  File "/home/robru/Applications/gottengeography/gg/app.py", line 127,
in startup
    self.add_action_entries({'app.quit': lambda: self.quit()}, 1, None)
  File "/usr/lib64/python2.7/site-packages/gi/types.py", line 43, in function
    return info.invoke(*args, **kwargs)
TypeError: Expected Gio.ActionEntry, but got StructMeta

So I try giving it the ActionEntry that it wants so badly:

    self.add_action_entries(Gio.ActionEntry(), 1, self)
    self.set_app_menu(builder.get_object('app_menu'))

And this causes a segfault. I tried playing around with
Gio.ActionEntry and found it quite lacking... in anything:

>>> Gio.ActionEntry
<class 'gi.repository.Gio.ActionEntry'>
>>> foo = Gio.ActionEntry()
>>> foo
<void at 0x25369d0>
>>> foo = Gio.ActionEntry('app.quit')
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
TypeError: function takes at most 0 arguments (1 given)
>>> foo.name
>>> foo.name is None
True
>>> dir(foo)
['__class__', '__delattr__', '__dict__', '__doc__', '__eq__',
'__format__', '__ge__', '__getattribute__', '__gt__', '__gtype__',
'__hash__', '__info__', '__init__', '__le__', '__lt__', '__module__',
'__ne__', '__new__', '__reduce__', '__reduce_ex__', '__repr__',
'__setattr__', '__sizeof__', '__str__', '__subclasshook__',
'__weakref__', 'activate', 'change_state', 'name', 'padding',
'parameter_type', 'state']
>>> foo.name = 'app.quit'
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
RuntimeError: unable to set value for field
>>>

So I don't quite understand how this do-nothing is supposed to be used
to make the app menu go.

If I don't call set_app_menu, I get the default menu containing only
quit, but if I call it, it just blanks the menu.

How do I make the menu entries appear? How do I connect callbacks to
the menu items?

Thanks.

-- 
http://exolucere.ca