Battery status update

shell/model/devices/battery.py

@@ -10,7 +10,9 @@ class Device(device.Device):
 
     def __init__(self):
         device.Device.__init__(self)
+        
         self._level = 0
+        self._timeout_id = gobject.timeout_add(2000, self._check_battery_level)
 
     def do_get_property(self, pspec):
         if pspec.name == 'level':
@@ -18,3 +20,30 @@ class Device(device.Device):
 
     def get_type(self):
         return 'battery'
+
+    def _check_battery_level(self):
+        new_level = self._get_battery_level()
+        
+        if new_level != self._level:
+            self._level = new_level
+            self.notify('level')
+
+        return True
+
+    def _get_battery_level(self):
+        battery_class_path = '/sys/class/battery/psu_0/'
+
+        capacity_path = battery_class_path + 'capacity_percentage'
+        try:
+            f = open(capacity_path, 'r')
+            val = f.read().split('\n')
+            level = int(val[0])
+            f.close()
+        except:
+            level = 0
+
+        return level
+
+    def __del__(self):
+        gobject.source_remove(self._timeout_id)
+        self._timeout_id = 0

shell/view/devices/battery.py

@@ -7,7 +7,7 @@ class DeviceView(canvasicon.CanvasIcon):
         canvasicon.CanvasIcon.__init__(self)
         self._model = model
 
-        model.connect('notify::strength', self._level_changed_cb)
+        model.connect('notify::level', self._level_changed_cb)
 
         self._update_level()
 
@@ -15,6 +15,6 @@ class DeviceView(canvasicon.CanvasIcon):
         self.props.icon_name = canvasicon.get_icon_state(
                                     _ICON_NAME, self._model.props.level)
 
-    def _level_changed_cb(self, pspec):
+    def _level_changed_cb(self, pspec, param):
         self._update_level()