recovery_gtk.py 文件源码

def backend(self):
        '''Return D-BUS backend client interface.

        This gets initialized lazily.
        '''
        if self._dbus_iface is None:
            try:
                bus = dbus.SystemBus()
                self._dbus_iface = dbus.Interface(bus.get_object(DBUS_BUS_NAME,
                                                  '/RecoveryMedia'),
                                                  DBUS_INTERFACE_NAME)
            except dbus.DBusException as msg:
                self.dbus_exception_handler(msg)
                sys.exit(1)
            except Exception as msg:
                self.show_alert(Gtk.MessageType.ERROR, "Exception", str(msg),
                           transient_for=self.tool_widgets.get_object('tool_selector'))

        return self._dbus_iface