Display strength of wireless device/networks

shell/model/devices/device.py

@@ -1,7 +1,10 @@
+import gobject
+
 from sugar import util
 
-class Device(object):
+class Device(gobject.GObject):
     def __init__(self):
+        gobject.GObject.__init__(self)
         self._id = util.unique_id()
 
     def get_type(self):

shell/model/devices/wirelessnetwork.py

@@ -1,15 +1,29 @@
+import gobject
+
 from model.devices import device
 
 class Device(device.Device):
+    __gproperties__ = {
+        'strength' : (int, None, None, 0, 100, 0,
+                      gobject.PARAM_READABLE)
+    }
+
     def __init__(self, nm_device):
         device.Device.__init__(self)
         self._nm_device = nm_device
 
+        self._nm_device.connect('strength-changed',
+                                self._strength_changed_cb)
+
+    def _strength_changed_cb(self, nm_device):
+        self.notity('strength')
+
+    def do_get_property(self, pspec):
+        if pspec.name == 'strength':
+            return self._nm_device.get_strength()
+
     def get_type(self):
         return 'wirelessnetwork'
 
     def get_id(self):
         return self._nm_device.get_op()
-
-    def get_level(self):
-        return self._nm_device.get_strength()