Python SessionBus.watch_name_owner方法代碼示例

# 需要導入模塊: from dbus import SessionBus [as 別名]
# 或者: from dbus.SessionBus import watch_name_owner [as 別名]

#.........這裏部分代碼省略.........
        return self._conn

    def suggest_room_for_activity(self, activity_id):
        """Suggest a room to use to share the given activity.
        """
        return activity_id

    def identify_contacts(self, tp_chan, handles, identifiers=None):
        raise NotImplementedError

    def _init_connection(self):
        """Set up our connection

        if there is no existing connection
            (_find_existing_connection returns None)
        produce a new connection with our protocol for our
        account.

        if there is an existing connection, reuse it by
        registering for various of events on it.
        """
        _logger.debug('%r: init connection', self)
        conn = self._find_existing_connection()
        if not conn:
            _logger.debug('%r: no existing connection', self)
            return

        m = conn[CONN_INTERFACE].connect_to_signal('StatusChanged',
           self._handle_connection_status_change)
        self._matches.append(m)
        m = conn[CONN_INTERFACE].connect_to_signal('NewChannel',
                                                   self._new_channel_cb)
        self._matches.append(m)
        self._watch_conn_name = self._session_bus.watch_name_owner(
            conn.service_name, self._watch_conn_name_cb)

        self._conn = conn

        status = self._conn.GetStatus()
        self._handle_connection_status_change(status, CONNECTION_STATUS_REASON_NONE_SPECIFIED)

    def _find_existing_connection(self):
        raise NotImplementedError

    def _watch_conn_name_cb(self, dbus_name):
        """Check if we still have a connection on the DBus session bus.

        If the connection disappears, stop the plugin.
        """
        if not dbus_name and self._conn is not None:
            _logger.warning(
                'D-Bus name %s disappeared, this probably means %s crashed',
                self._conn.service_name, self._TP_CONN_MANAGER)
            self._handle_connection_status_change(
                CONNECTION_STATUS_DISCONNECTED, 
                CONNECTION_STATUS_REASON_NONE_SPECIFIED)

    def _handle_connection_status_change(self, status, reason):
        if status == self._conn_status:
            return

        if status == CONNECTION_STATUS_CONNECTING:
            self._conn_status = status
            _logger.debug("%r: connecting...", self)
        elif status == CONNECTION_STATUS_CONNECTED:
            self._conn_status = status

# 需要導入模塊: from dbus import SessionBus [as 別名]
# 或者: from dbus.SessionBus import watch_name_owner [as 別名]
class Client(GObject):
    (STATE_INITIALIZED,
     STATE_STATIONS_LOADED,
     STATE_CHANNELS_LOADED) = range(3)

    __gtype_name__ = 'WebRadioClient'

    __gsignals__ = {
        'station-added':       (SIGNAL_RUN_LAST, TYPE_NONE, (object,)),
        'channel-added':       (SIGNAL_RUN_LAST, TYPE_NONE, (object,)),
        'state-changed':       (SIGNAL_RUN_LAST, TYPE_NONE, ()),
        'stream-tags-changed': (SIGNAL_RUN_LAST, TYPE_NONE, ()),
    }

    @staticmethod
    def decode_stream(uri, title, length):
        return Stream(uri, title, length)

    @classmethod
    def decode_channel(cls, station, uri, tags, streams):
        streams = [cls.decode_stream(*s) for s in streams]
        return Channel(station, uri, tags, streams)

    def __init__(self):
        super(Client, self).__init__()

        self.__stations = dict()
        self.__channels = dict()
        self.__stream_tags = dict()

        self.__current_channel = None
        self.__is_playing = False

        def register_channel(station, channel):
            if station:
                station.channels.append(channel)

            for stream in channel.streams:
                self.__channels[stream.uri] = channel

            self.__channels[channel.uri] = channel

        def station_added_cb(station):
            id, title, uri, channels = station
            station = Station(id, title, uri)

            for channel in channels:
                channel = self.decode_channel(station, *channel)
                register_channel(station, channel)

            self.__stations[station.id] = station
            self.emit('station-added', station)

        def channel_added_cb(station_id, channel):
            station = self.find_station(station_id)
            channel = self.decode_channel(station, *channel)
            register_channel(station, channel)
            self.emit('channel-added', channel)

        def state_changed_cb(playing, stream_uri):
            self.__stream_tags = self.__service.GetStreamTags()
            self.__current_channel = self.__channels.get(stream_uri)
            self.__is_playing = playing
            self.emit('state-changed')

        def stream_tags_changed_cb(tags):
            self.__stream_tags.update(tags)
            self.emit('stream-tags-changed')

        def name_owner_cb(new_owner):
            if not new_owner:
                # FIXME
                from gtk import main_quit
                main_quit()

        self.__bus = SessionBus()
        proxy = self.__bus.get_object(Service.name, '/')
        self.__bus.watch_name_owner(Service.name, name_owner_cb)
        self.__service = Interface(proxy, Service.interface)
        self.__service.connect_to_signal('StationAdded',      station_added_cb)
        self.__service.connect_to_signal('ChannelAdded',      channel_added_cb)
        self.__service.connect_to_signal('StateChanged',      state_changed_cb)
        self.__service.connect_to_signal('StreamTagsChanged', stream_tags_changed_cb)

        for station in self.__service.GetStations():
            station_added_cb(station)

        state_changed_cb(*self.__service.GetState())

    def wait(self, stage=STATE_CHANNELS_LOADED):
        loop = MainLoop(None, True)

        def data_ready_cb(new_stage):
            if new_stage >= stage:
                loop.quit()

        self.__service.connect_to_signal('DataReady', data_ready_cb)

        if self.__service.GetDataStage() >= stage:
            loop.quit()
#.........這裏部分代碼省略.........