Battery palette

shell/model/devices/battery.py

@@ -20,11 +20,15 @@ import dbus
 from model.devices import device
 
 _LEVEL_PROP = 'battery.charge_level.percentage'
+_CHARGING_PROP = 'battery.rechargeable.is_charging'
+_DISCHARGING_PROP = 'battery.rechargeable.is_discharging'
 
 class Device(device.Device):
     __gproperties__ = {
         'level' : (int, None, None, 0, 100, 0,
-                   gobject.PARAM_READABLE)
+                   gobject.PARAM_READABLE),
+        'charging' : (bool, None, None, False, gobject.PARAM_READABLE),
+        'discharging' : (bool, None, None, False, gobject.PARAM_READABLE)
     }
 
     def __init__(self, udi):
@@ -40,16 +44,28 @@ class Device(device.Device):
                                 udi)
 
         self._level = self._battery.GetProperty(_LEVEL_PROP)
+        self._charging = self._battery.GetProperty(_CHARGING_PROP)
+        self._discharging = self._battery.GetProperty(_DISCHARGING_PROP)
 
     def do_get_property(self, pspec):
         if pspec.name == 'level':
             return self._level 
+        if pspec.name == 'charging':
+            return self._charging
+        if pspec.name == 'discharging':
+            return self._discharging
 
     def get_type(self):
         return 'battery'
 
     def _battery_changed(self, num_changes, changes_list):
         for change in changes_list:
-            if change[0] == 'battery.charge_level.percentage':
+            if change[0] == _LEVEL_PROP:
                 self._level = self._battery.GetProperty(_LEVEL_PROP)
                 self.notify('level')
+            elif change[0] == _CHARGING_PROP:
+                self._charging = self._battery.GetProperty(_CHARGING_PROP)
+                self.notify('charging')
+            elif change[0] == _DISCHARGING_PROP:
+                self._discharging = self._battery.GetProperty(_DISCHARGING_PROP)
+                self.notify('discharging')

shell/view/devices/battery.py

@@ -14,8 +14,12 @@
 # along with this program; if not, write to the Free Software
 # Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 
+import gtk
+
+from gettext import gettext as _
 from sugar.graphics import canvasicon
 from sugar.graphics import units
+from sugar.graphics.palette import Palette
 
 _ICON_NAME = 'device-battery'
 
@@ -23,15 +27,56 @@ class DeviceView(canvasicon.CanvasIcon):
     def __init__(self, model):
         canvasicon.CanvasIcon.__init__(self, scale=units.MEDIUM_ICON_SCALE)
         self._model = model
+        self._palette = BatteryPalette(_('My Battery life'))
+        self.set_palette(self._palette)
 
-        model.connect('notify::level', self._level_changed_cb)
+        model.connect('notify::level', self._battery_status_changed_cb)
+        model.connect('notify::charging', self._battery_status_changed_cb)
+        model.connect('notify::discharging', self._battery_status_changed_cb)
+        self._update_info()
 
-        self._update_level()
-
-    def _update_level(self):
+    def _update_info(self):
         self.props.icon_name = canvasicon.get_icon_state(
                                     _ICON_NAME, self._model.props.level)
 
-    def _level_changed_cb(self, pspec, param):
-        self._update_level()
+        # Update palette
+        self._palette.update_progress_bar(self._model.props.level)
+        self._palette.update_charge_status(self._model.props.charging, \
+            self._model.props.discharging)
 
+    def _battery_status_changed_cb(self, pspec, param):
+        self._update_info()
+
+class BatteryPalette(Palette):
+        def __init__(self, primary_text):
+            Palette.__init__(self, primary_text)
+            
+            self._level = 0
+            self._progress_bar = gtk.ProgressBar()
+            self._progress_bar.show()
+            self._status_label = gtk.Label()
+            self._status_label.show()
+
+            vbox = gtk.VBox()
+            vbox.pack_start(self._progress_bar)
+            vbox.pack_start(self._status_label)
+            vbox.show()
+
+            self.set_content(vbox)
+
+        def update_progress_bar(self, percent):
+            self._level = percent
+            fraction = float(percent/100.0)
+            self._progress_bar.set_fraction(fraction)
+
+        def update_charge_status(self, charging, discharging):
+            percent_string = ' (%s%%)' % self._level
+
+            if charging:
+                charge_text = _('Battery charging') + percent_string
+            elif discharging:
+                charge_text = _('Battery discharging') + percent_string
+            else:
+                charge_text = _('Battery fully charged')
+
+            self._status_label.set_text(charge_text)