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Viewing changes to UpdateManager/Core/AlertWatcher.py

  • Committer: Ivo Nunes
  • Date: 2012-11-17 11:04:03 UTC
  • Revision ID: ivo@elementaryos.org-20121117110403-saeovxt71tn0sktw
Initial import, version 1:0.156.14.11

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UpdateManager/Core/AlertWatcher.py
 
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# AlertWatcher.py 
 
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#
 
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#  Copyright (c) 2010 Mohamed Amine IL Idrissi
 
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#  
 
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#  Author: Mohamed Amine IL Idrissi <ilidrissiamine@gmail.com>
 
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# 
 
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#  This program is free software; you can redistribute it and/or 
 
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#  modify it under the terms of the GNU General Public License as 
 
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#  published by the Free Software Foundation; either version 2 of the
 
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#  License, or (at your option) any later version.
 
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# 
 
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#  This program is distributed in the hope that it will be useful,
 
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#  but WITHOUT ANY WARRANTY; without even the implied warranty of
 
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#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 
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#  GNU General Public License for more details.
 
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# 
 
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#  You should have received a copy of the GNU General Public License
 
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#  along with this program; if not, write to the Free Software
 
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#  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
 
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#  USA
 
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from gi.repository import GObject
 
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import dbus
 
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from dbus.mainloop.glib import DBusGMainLoop
 
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class AlertWatcher(GObject.GObject):
 
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    """ a class that checks for alerts and reports them, like a battery
 
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    or network warning """
 
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    __gsignals__ = {"network-alert": (GObject.SignalFlags.RUN_FIRST,
 
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                                      None,
 
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                                      (GObject.TYPE_INT,)),
 
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                    "battery-alert": (GObject.SignalFlags.RUN_FIRST,
 
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                                      None,
 
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                                      (GObject.TYPE_BOOLEAN,)),
 
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                    "network-3g-alert": (GObject.SignalFlags.RUN_FIRST,
 
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                                         None,
 
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                                        (GObject.TYPE_BOOLEAN,
 
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                                         GObject.TYPE_BOOLEAN,)),
 
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                    }
 
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    def __init__(self):
 
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        GObject.GObject.__init__(self)
 
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        DBusGMainLoop(set_as_default=True)
 
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        self.bus = dbus.Bus(dbus.Bus.TYPE_SYSTEM)
 
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        self.network_state = 3 # make it always connected if NM isn't available
 
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    def check_alert_state(self):
 
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        try:
 
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            obj = self.bus.get_object("org.freedesktop.NetworkManager",
 
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                                      "/org/freedesktop/NetworkManager")
 
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            obj.connect_to_signal("StateChanged",
 
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                                  self._on_network_state_changed,
 
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                                  dbus_interface="org.freedesktop.NetworkManager")
 
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            interface = dbus.Interface(obj, "org.freedesktop.DBus.Properties")
 
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            self.network_state = interface.Get("org.freedesktop.NetworkManager", "State")
 
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            self._network_alert(self.network_state)
 
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            # power
 
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            obj = self.bus.get_object('org.freedesktop.UPower',
 
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                                      '/org/freedesktop/UPower')
 
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            obj.connect_to_signal("Changed", self._power_changed,
 
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                                  dbus_interface="org.freedesktop.UPower")
 
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            self._power_changed()
 
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            # 3g
 
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            self._update_3g_state()
 
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        except dbus.exceptions.DBusException:
 
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            pass
 
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    def _on_network_state_changed(self, state):
 
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        self._network_alert(state)
 
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        self._update_3g_state()
 
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    def _update_3g_state(self):
 
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        from roam import NetworkManagerHelper
 
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        nm = NetworkManagerHelper()
 
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        on_3g = nm.is_active_connection_gsm_or_cdma()
 
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        is_roaming = nm.is_active_connection_gsm_or_cdma_roaming()
 
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        self._network_3g_alert(on_3g, is_roaming)
 
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    def _network_3g_alert(self, on_3g, is_roaming):
 
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        self.emit("network-3g-alert", on_3g, is_roaming)
 
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    def _network_alert(self, state):
 
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        self.network_state = state
 
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        self.emit("network-alert", state)
 
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    def _power_changed(self):
 
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        obj = self.bus.get_object("org.freedesktop.UPower", \
 
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                                "/org/freedesktop/UPower")
 
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        interface = dbus.Interface(obj, "org.freedesktop.DBus.Properties")
 
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        on_battery = interface.Get("org.freedesktop.UPower", "OnBattery")
 
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        self.emit("battery-alert", on_battery)
 
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