1 files changed, 58 insertions, 0 deletions
diff --git a/invest-applet/invest/networkmanager.py b/invest-applet/invest/networkmanager.py
new file mode 100644
index 00000000..415e9ce4
--- /dev/null
+++ b/invest-applet/invest/networkmanager.py
@@ -0,0 +1,58 @@
+import invest
+from dbus.mainloop.glib import DBusGMainLoop
+import dbus
+
+# possible states, see http://projects.mate.org/NetworkManager/developers/spec-08.html#type-NM_STATE
+STATE_UNKNOWN		= dbus.UInt32(0)
+STATE_ASLEEP		= dbus.UInt32(1)
+STATE_CONNECTING	= dbus.UInt32(2)
+STATE_CONNECTED		= dbus.UInt32(3)
+STATE_DISCONNEDTED	= dbus.UInt32(4)
+
+class NetworkManager:
+	def __init__(self):
+		self.state = STATE_UNKNOWN
+		self.statechange_callback = None
+
+		try:
+			# get an event loop
+			loop = DBusGMainLoop()
+
+			# get the NetworkManager object from D-Bus
+			invest.debug("Connecting to Network Manager via D-Bus")
+			bus = dbus.SystemBus(mainloop=loop)
+			nmobj = bus.get_object('org.freedesktop.NetworkManager', '/org/freedesktop/NetworkManager')
+			nm = dbus.Interface(nmobj, 'org.freedesktop.NetworkManager')
+
+			# connect the signal handler to the bus
+			bus.add_signal_receiver(self.handler, None,
+					'org.freedesktop.NetworkManager',
+					'org.freedesktop.NetworkManager',
+					'/org/freedesktop/NetworkManager')
+
+			# get the current status of the network manager
+			self.state = nm.state()
+			invest.debug("Current Network Manager status is %d" % self.state)
+		except Exception, msg:
+			invest.error("Could not connect to the Network Manager: %s" % msg )
+
+	def online(self):
+		return self.state == STATE_UNKNOWN or self.state == STATE_CONNECTED
+
+	def offline(self):
+		return not self.online()
+
+	# the signal handler for signals from the network manager
+	def handler(self,signal=None):
+		if isinstance(signal, dict):
+			state = signal.get('State')
+			if state != None:
+				invest.debug("Network Manager change state %d => %d" % (self.state, state) );
+				self.state = state
+
+				# notify about state change
+				if self.statechange_callback != None:
+					self.statechange_callback()
+
+	def set_statechange_callback(self,handler):
+		self.statechange_callback = handler