check_hardware.py 文件源码

def on_battery() -> bool:
    """Check if we are running on Battery power."""
    log.debug("Checking if running on Battery power.")
    if has_battery():
        bus, upower_path = dbus.SystemBus(), '/org/freedesktop/UPower'
        upower = bus.get_object('org.freedesktop.UPower', upower_path)
        result = __get_prop(upower, upower_path, 'OnBattery')
        if result is None:  # Cannot read property, something is wrong.
            print(f"Failed to read D-Bus property: {upower_path}.")
            result = False  # Assume we are connected to a power supply.
        return result
    return False

#
# def on_wifi():
#     """Check if we are running on wifi."""
#     try:
#         bus = dbus.SystemBus()
#         manager = bus.get_object('org.freedesktop.NetworkManager',
#                                  '/org/freedesktop/NetworkManager')
#          # FIXME this returns int, I dunno what they mean ?, investigate.
#         return __get_prop(manager, 'org.freedesktop.NetworkManager',
#                          'WirelessEnabled')
#     except Exception:
#         return False