Protected activities list

Does not allow sugar to display erase option
for activities that are included in the
activities.protected list.

This feature was requested by many teachers
from different diployments, in example Paraguay.

Signed-off-by: Anish Mangal <anish@sugarlabs.org>

4 files changed, 41 insertions, 10 deletions

diff --git a/data/Makefile.am b/data/Makefile.am
index 6a62d23..e34930b 100644
--- a/data/Makefile.am
+++ b/data/Makefile.am
@@ -11,6 +11,7 @@ sugar-100.gtkrc: gtkrc.em
 sugardir = $(pkgdatadir)/data
 sugar_DATA =			\
 	activities.defaults	\
+	activities.protected	\
 	kbdconfig		\
 	mime.defaults		\
 	GPLv2			\
diff --git a/data/activities.protected b/data/activities.protected
new file mode 100644
index 0000000..e3907ba
--- /dev/null
+++ b/data/activities.protected
@@ -0,0 +1,14 @@
+# Protected activities list
+
+org.laptop.WebActivity
+org.laptop.Calculate
+org.laptop.Chat
+org.vpri.EtoysActivity
+org.laptop.ImageViewerActivity
+org.laptop.sugar.Jukebox
+org.laptop.Log
+org.laptop.Pippy
+org.laptop.sugar.ReadActivity
+org.laptop.Terminal
+org.laptop.TurtleArtActivity
+org.laptop.AbiWordActivity
diff --git a/src/jarabe/desktop/activitieslist.py b/src/jarabe/desktop/activitieslist.py
index f09e85f..13ff299 100644
--- a/src/jarabe/desktop/activitieslist.py
+++ b/src/jarabe/desktop/activitieslist.py
@@ -405,14 +405,15 @@ class ActivityListPalette(ActivityPalette):
         self.menu.append(self._favorite_item)
         self._favorite_item.show()
 
-        if activity_info.is_user_activity():
-            menu_item = MenuItem(_('Erase'), 'list-remove')
-            menu_item.connect('activate', self.__erase_activate_cb)
-            self.menu.append(menu_item)
-            menu_item.show()
-
-            if not os.access(activity_info.get_path(), os.W_OK):
-                menu_item.props.sensitive = False
+        if activity_info.is_user_activity() and \
+            not registry.protects_activity(self._bundle_id):
+                menu_item = MenuItem(_('Erase'), 'list-remove')
+                menu_item.connect('activate', self.__erase_activate_cb)
+                self.menu.append(menu_item)
+                menu_item.show()
+
+                if not os.access(activity_info.get_path(), os.W_OK):
+                    menu_item.props.sensitive = False
 
         registry = bundleregistry.get_registry()
         self._activity_changed_sid = registry.connect('bundle_changed',
diff --git a/src/jarabe/model/bundleregistry.py b/src/jarabe/model/bundleregistry.py
index b96de86..090dddc 100644
--- a/src/jarabe/model/bundleregistry.py
+++ b/src/jarabe/model/bundleregistry.py
@@ -65,11 +65,13 @@ class BundleRegistry(gobject.GObject):
 
         self._last_defaults_mtime = -1
         self._favorite_bundles = {}
+        self._protected_activities = []
 
         try:
             self._load_favorites()
-        except Exception:
-            logging.exception('Error while loading favorite_activities.')
+            self._load_protected()
+        except Exception, e:
+            logging.exception('Error while loading activities defaults: %s' % str(e))
 
         self._merge_default_favorites()
 
@@ -126,6 +128,19 @@ class BundleRegistry(gobject.GObject):
             self._last_defaults_mtime = float(favorites_data['defaults-mtime'])
             self._favorite_bundles = favorite_bundles
 
+    def _load_protected(self):
+        f = open(os.path.join(config.data_path, 'activities.protected'), 'r')
+
+        for line in f.readlines():
+            line = line.strip()
+            if line and not line.startswith('#'):
+                self._protected_activities.append(line)
+
+        f.close()
+
+    def protects_activity(self, bundle_id):
+        return (bundle_id in self._protected_activities)
+
     def _merge_default_favorites(self):
         default_activities = []
         defaults_path = os.path.join(config.data_path, 'activities.defaults')