'This is called by the applet to notify the application an event happened on a
menu item. eventId can be one of the following::
* "clicked"
* "hovered"
* "opened"
* "closed"
Vendor specific events can be added by prefixing them with "x-<vendor>-"'

@dbus_method(IFACE, in_signature=u'isvu', out_signature=u'')
def Event(self, id, eventId, data, timestamp):

    if (self.menu.id_to_action(id) is not None):
        self.menu.handle_event_signal.emit(id, eventId, data, timestamp)
