So because I have the unity-gtk-module installed, all gtk-applications export their menu over the dbus SessionBus. My goal is to extract a list of all available menu entries. I've already implemented this with the help of pydbus, but for some reason, this solution is highly unstable and some applications just flat out crash. The unity-gtk-module uses Gio's g_dbus_connection_export_menu_model () to export its GMenuModel modeled menu over dbus, so I thought it would make sense to try to use Gio to process the exported menu. Gio uses the GDBusMenuModel class to retrieve a menu from the bus. Python uses PyGObject for wrapping Gio:
from gi.repository import Gio
connection = Gio.bus_get_sync(Gio.BusType.SESSION, None)
menuModel = Gio.DBusMenuModel.get(connection, [bus-name e.g. ":1.5"], [object-path e.g. "/com/canonical/unity/gtk/window/0"])
Now menuModel should be wrapping the GMenuModel from my application. At this point I'm honestly a bit confused about how exactly the GMenuModel works (the Description is not really helping) but it seems I have to use a GMenuAttributeIter object to iterate through the entries. But when I try this:
iter = Gio.MenuModel.iterate_item_attributes(menuModel, 0) #0 is the index of the root node
this happens:
GLib-GIO-CRITICAL **: g_dbus_menu_model_get_item_attributes: assertion 'proxy->items' failed
GLib-GIO-CRITICAL **: GMenuModel implementation 'GDBusMenuModel' doesn't override iterate_item_attributes() and fails to return sane calues from get_item_attributes()
This probably happens because GDBusMenuModel inherits GMenuModel which provides these methods, but is abstract, so GDBusMenuModel should override them, which it doesn't (see link above, it provides just g_dbus_menu_model_get ()). If this is the case, how am I supposed to actually use this class as a proxy? And if it's not, what am I doing wrong?
