gajim-plural/gajim/common/dbus/location.py

113 lines
3.7 KiB
Python

# Copyright (C) 2009-2014 Yann Leboulanger <asterix AT lagaule.org>
#
# This file is part of Gajim.
#
# Gajim is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published
# by the Free Software Foundation; version 3 only.
#
# Gajim is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with Gajim. If not, see <http://www.gnu.org/licenses/>.
import logging
from datetime import datetime
from gi.repository import GLib
from nbxmpp.structs import LocationData
from gajim.common import app
if app.is_installed('GEOCLUE'):
from gi.repository import Geoclue
log = logging.getLogger('gajim.c.dbus.location')
class LocationListener:
_instance = None
@classmethod
def get(cls):
if cls._instance is None:
cls._instance = cls()
return cls._instance
def __init__(self):
self._data = {}
# Note: do not remove third parameter `paramSpec`
# because notify signal expects three parameters
def _on_location_update(self, simple, paramSpec=None):
location = simple.get_location()
timestamp = location.get_property("timestamp")[0]
lat = location.get_property("latitude")
lon = location.get_property("longitude")
alt = location.get_property("altitude")
# in XEP-0080 it's horizontal accuracy
acc = location.get_property("accuracy")
# update data with info we just received
self._data = {'lat': lat, 'lon': lon, 'alt': alt, 'accuracy': acc}
self._data['timestamp'] = self._timestamp_to_utc(timestamp)
self._send_location()
def _on_simple_ready(self, obj, result):
try:
self.simple = Geoclue.Simple.new_finish(result)
except GLib.Error as e:
if e.domain == 'g-dbus-error-quark':
log.warning("Could not enable geolocation: %s", e.message)
else:
raise
else:
self.simple.connect('notify::location', self._on_location_update)
self._on_location_update(self.simple)
def get_data(self):
Geoclue.Simple.new("org.gajim.Gajim",
Geoclue.AccuracyLevel.EXACT,
None,
self._on_simple_ready)
def start(self):
self.location_info = {}
self.get_data()
def _send_location(self):
accounts = app.connections.keys()
for acct in accounts:
if not app.account_is_connected(acct):
continue
if not app.config.get_per('accounts', acct, 'publish_location'):
continue
if self.location_info == self._data:
continue
if 'timestamp' in self.location_info and 'timestamp' in self._data:
last_data = self.location_info.copy()
del last_data['timestamp']
new_data = self._data.copy()
del new_data['timestamp']
if last_data == new_data:
continue
app.connections[acct].get_module('UserLocation').set_location(
LocationData(**self._data))
self.location_info = self._data.copy()
def _timestamp_to_utc(self, timestamp):
time = datetime.utcfromtimestamp(timestamp)
return time.strftime('%Y-%m-%dT%H:%MZ')
def enable():
if not app.is_installed('GEOCLUE'):
log.warning('GeoClue not installed')
return
listener = LocationListener.get()
listener.start()