Battery palette

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)