#!/usr/bin/env python
import sys

import dbus
import time

DBUSMENU_IFACE = "com.canonical.dbusmenu"

def die(error):
    sys.stderr.write("ERROR: %s\n" % error)
    sys.stderr.flush()
    sys.exit(-1)

class MenuItem(object):
    def __init__(self, menu_id, label):
        self.menu_id = menu_id
        self.label = label

    def __str__(self):
        return "%d: %s" % (self.menu_id, self.label.encode("utf-8"))

def get_children(iface, menu_id):
    revision, item = iface.GetLayout(menu_id, 1, [])
    lst = []
    for child in item[2]:
        child_id = child[0]
        child_label = child[1].get("label", "<no label>")
        lst.append(MenuItem(child_id, child_label))
    return lst

def main(args):
    if len(args) != 2:
        die("Missing args")

    dest, path = args

    bus = dbus.SessionBus()
    proxy = bus.get_object(dest, path)
    iface = dbus.Interface(proxy, dbus_interface=DBUSMENU_IFACE)

    children = get_children(iface, 0)

    print "# menubar items"
    for child in children:
        print child
    first_menu = children[0]

    print
    print "# Calling AboutToShow"
    iface.AboutToShow(first_menu.menu_id)

    time.sleep(1)

    print
    print "# children of '%s'" % first_menu.label
    children = get_children(iface, first_menu.menu_id)
    for child in children:
        print child

    return 0

if __name__ == "__main__":
    sys.exit(main(sys.argv[1:]))
# vi: ts=4 sw=4 et