Allow to run activities without Sugar shell.

- Handle lack of GSettings gracefully.
- Still requires sugar-datastore.
- Supports avoiding X11 docks/panels.
- Provides icons for Activity windows.

Try it outside Sugar. Go to an Activity directory and run 'sugar-activity'.
Tested it with Terminal, Finance, Write, Browse, Memorize under XFCE4.
Tested in Gnome under OLPC-OS.
Also works from Sugar Terminal Activity.
Does not affect regular Sugar operation.

This is patch v.2 -
    Addresses most concerns:
    - Removed commented code, sorry.
    - Changed code to use profile.get_nickname and get_color where possible.

    Couldn't the launcher just pass this info?
    Maybe the launcher could set the activity root as well?
        - It is intended to be usable from the command line also.
    Should put sugar version in the environment
        - It is intended to work even without Sugar Shell installed.
    Why don't we always set the icon?
        - On XO it might use some memory. I was concerned to degrade
        performance.
    Also, imports should be at the top of the file?
        - Also a concern about performance on XO.
        This way it is only loaded in this use case.
        Maybe it is insignificant -moved as requested.
    It would be nice if the changes to the POT for sugar-toolkit-gtk3
    could be incorporated in this pull request, please.
        - There were no changes to POT files as part of this patch. Maybe
        it is worth translating low level command line tools, not sure.
    Suggest packaged activities might also provide .desktop files.
        - Intriguing but not sure within scope of this patch. You mean generate
        a .desktop file automatically as an option? Sounds nice!
    Suggest sugar-activity might also accept path to unpacked bundle.
        - Implemented!

bin/sugar-activity

@@ -35,8 +35,10 @@ DBusGMainLoop(set_as_default=True)
 from sugar3.activity import activityhandle
 from sugar3 import config
 from sugar3.bundle.activitybundle import ActivityBundle
+from sugar3.activity.activityfactory import get_environment
 from sugar3 import logger
 
+from sugar3.bundle.bundle import MalformedBundleException
 
 def create_activity_instance(constructor, handle):
     activity = constructor(handle)
@@ -69,7 +71,13 @@ class SingleProcess(dbus.service.Object):
 
 
 def main():
-    parser = OptionParser()
+    usage = 'usage: %prog [options] [activity dir] [python class]'
+    epilog = 'If you are running from a directory containing an Activity, ' \
+             'the argument may be ommitted. Otherwise please provide either '\
+             'a directory containing a Sugar Activity [activity dir], a '\
+             '[python_class], or both.'
+
+    parser = OptionParser(usage=usage, epilog=epilog)
     parser.add_option('-b', '--bundle-id', dest='bundle_id',
                       help='identifier of the activity bundle')
     parser.add_option('-a', '--activity-id', dest='activity_id',
@@ -89,18 +97,34 @@ def main():
 
     logger.start()
 
-    if 'SUGAR_BUNDLE_PATH' not in os.environ:
-        print 'SUGAR_BUNDLE_PATH is not defined in the environment.'
-        sys.exit(1)
+    activity_class = None
+    if len(args) == 2:
+        activity_class = args[1]
+        os.chdir(args[0])
+    elif len(args) == 1:
+        if os.path.isdir(args[0]):
+            os.chdir(args[0])
+        else:
+            activity_class = args[0]
 
-    if len(args) == 0:
-        print 'A python class must be specified as first argument.'
-        sys.exit(1)
+    os.environ['SUGAR_BUNDLE_PATH'] = os.path.abspath(os.curdir)
 
     bundle_path = os.environ['SUGAR_BUNDLE_PATH']
     sys.path.append(bundle_path)
 
-    bundle = ActivityBundle(bundle_path)
+    try:
+        bundle = ActivityBundle(bundle_path)
+    except MalformedBundleException:
+        parser.print_help()
+        exit(0)
+
+    if not activity_class:
+        if bundle.get_command().startswith('sugar-activity'):
+            print 'Guessing python class from activity.info!'
+            activity_class = bundle.get_command().split(" ")[1]
+
+    if 'SUGAR_VERSION' not in os.environ:
+        environ = get_environment(bundle)
 
     os.environ['SUGAR_BUNDLE_ID'] = bundle.get_bundle_id()
     os.environ['SUGAR_BUNDLE_NAME'] = bundle.get_name()
@@ -114,7 +138,7 @@ def main():
     gettext.bindtextdomain('sugar-toolkit-gtk3', config.locale_path)
     gettext.textdomain(bundle.get_bundle_id())
 
-    splitted_module = args[0].rsplit('.', 1)
+    splitted_module = activity_class.rsplit('.', 1)
     module_name = splitted_module[0]
     class_name = splitted_module[1]
 
@@ -123,6 +147,11 @@ def main():
         module = getattr(module, comp)
 
     activity_constructor = getattr(module, class_name)
+
+    if not options.activity_id:
+        options.activity_id = bundle.get_name()
+        options.bundle_id = bundle.get_bundle_id()
+
     activity_handle = activityhandle.ActivityHandle(
         activity_id=options.activity_id,
         object_id=options.object_id, uri=options.uri,

src/sugar3/activity/activity.py

@@ -67,7 +67,6 @@ import json
 from gi.repository import Gtk
 from gi.repository import Gdk
 from gi.repository import GObject
-from gi.repository import Gio
 import dbus
 import dbus.service
 from dbus import PROPERTIES_IFACE
@@ -81,6 +80,7 @@ from telepathy.constants import CONNECTION_HANDLE_TYPE_ROOM
 
 from sugar3 import util
 from sugar3 import power
+from sugar3.profile import get_nick_name, get_color
 from sugar3.presence import presenceservice
 from sugar3.activity.activityservice import ActivityService
 from sugar3.graphics import style
@@ -90,6 +90,9 @@ from sugar3.graphics.icon import Icon
 from sugar3.datastore import datastore
 from sugar3.bundle.activitybundle import get_bundle_instance
 from sugar3.bundle.helpers import bundle_from_dir
+from sugar3 import env
+from errno import EEXIST
+
 from gi.repository import SugarExt
 
 _ = lambda msg: gettext.dgettext('sugar-toolkit-gtk3', msg)
@@ -436,13 +439,18 @@ class Activity(Window, Gtk.Container):
                                            self.__jobject_updated_cb)
         self.set_title(self._jobject.metadata['title'])
 
+        if 'SUGAR_VERSION' not in os.environ:
+            bundle = get_bundle_instance(get_bundle_path())
+            self.set_icon_from_file(bundle.get_icon())
+
+
     def run_main_loop(self):
         Gtk.main()
 
     def _initialize_journal_object(self):
         title = _('%s Activity') % get_bundle_name()
-        settings = Gio.Settings('org.sugarlabs.user')
-        icon_color = settings.get_string('color')
+       
+        icon_color = get_color().to_string()
 
         jobject = datastore.create()
         jobject.metadata['title'] = title
@@ -613,11 +621,12 @@ class Activity(Window, Gtk.Container):
 
     def _adapt_window_to_screen(self):
         screen = Gdk.Screen.get_default()
+        workarea = screen.get_monitor_workarea(screen.get_number())
         geometry = Gdk.Geometry()
         geometry.max_width = geometry.base_width = geometry.min_width = \
-            screen.get_width()
+            workarea.width
         geometry.max_height = geometry.base_height = geometry.min_height = \
-            screen.get_height()
+            workarea.height
         geometry.width_inc = geometry.height_inc = geometry.min_aspect = \
             geometry.max_aspect = 1
         hints = Gdk.WindowHints(Gdk.WindowHints.ASPECT |
@@ -671,7 +680,7 @@ class Activity(Window, Gtk.Container):
         if os.environ.get('SUGAR_ACTIVITY_ROOT'):
             return os.environ['SUGAR_ACTIVITY_ROOT']
         else:
-            return '/'
+            return get_activity_root()
 
     def read_file(self, file_path):
         '''
@@ -876,7 +885,7 @@ class Activity(Window, Gtk.Container):
         if not self.metadata.get('activity_id', ''):
             self.metadata['activity_id'] = self.get_id()
 
-        file_path = os.path.join(self.get_activity_root(), 'instance',
+        file_path = os.path.join(get_activity_root(), 'instance',
                                  '%i' % time.time())
         try:
             self.write_file(file_path)
@@ -1251,7 +1260,13 @@ def get_activity_root():
     if os.environ.get('SUGAR_ACTIVITY_ROOT'):
         return os.environ['SUGAR_ACTIVITY_ROOT']
     else:
-        raise RuntimeError('No SUGAR_ACTIVITY_ROOT set.')
+        activity_root = env.get_profile_path(os.environ['SUGAR_BUNDLE_ID'])
+        try:
+            os.mkdir(activity_root)
+        except OSError, e:
+            if e.errno != EEXIST:
+                raise e
+        return activity_root
 
 
 def show_object_in_journal(object_id):

src/sugar3/datastore/datastore.py

@@ -32,6 +32,7 @@ import dbus
 from sugar3 import env
 from sugar3 import mime
 from sugar3 import dispatch
+from sugar3.profile import get_color
 
 DS_DBUS_SERVICE = 'org.laptop.sugar.DataStore'
 DS_DBUS_INTERFACE = 'org.laptop.sugar.DataStore'
@@ -222,7 +223,6 @@ class RawObject(object):
 
     def __init__(self, file_path):
         stat = os.stat(file_path)
-        settings = Gio.Settings('org.sugarlabs.user')
         metadata = {
             'uid': file_path,
             'title': os.path.basename(file_path),
@@ -230,7 +230,7 @@ class RawObject(object):
             'mime_type': Gio.content_type_guess(file_path, None)[0],
             'activity': '',
             'activity_id': '',
-            'icon-color': settings.get_string('color'),
+            'icon-color': get_color().to_string(),
             'description': file_path,
         }
 

src/sugar3/graphics/style.py

@@ -116,9 +116,13 @@ MEDIUM_ICON_SIZE = zoom(55 * 1.5)
 LARGE_ICON_SIZE = zoom(55 * 2.0)
 XLARGE_ICON_SIZE = zoom(55 * 2.75)
 
-settings = Gio.Settings('org.sugarlabs.font')
-FONT_SIZE = settings.get_double('default-size')
-FONT_FACE = settings.get_string('default-face')
+if 'org.sugarlabs.font' in Gio.Settings.list_schemas():
+    settings = Gio.Settings('org.sugarlabs.font')
+    FONT_SIZE = settings.get_double('default-size')
+    FONT_FACE = settings.get_string('default-face')
+else:
+    FONT_SIZE = 10
+    FONT_FACE = 'Sans Serif' 
 
 FONT_NORMAL = Font('%s %f' % (FONT_FACE, FONT_SIZE))
 FONT_BOLD = Font('%s bold %f' % (FONT_FACE, FONT_SIZE))

src/sugar3/graphics/xocolor.py

@@ -244,8 +244,9 @@ class XoColor:
         parsed_color = None
 
         if color_string is None:
-            settings = Gio.Settings('org.sugarlabs.user')
-            color_string = settings.get_string('color')
+            if 'org.sugarlabs.user' in Gio.Settings.list_schemas():
+                settings = Gio.Settings('org.sugarlabs.user')
+                color_string = settings.get_string('color')
 
         if color_string is not None:
             parsed_color = _parse_string(color_string)

src/sugar3/presence/buddy.py

@@ -24,7 +24,6 @@ STABLE.
 import logging
 
 from gi.repository import GObject
-from gi.repository import Gio
 import dbus
 from telepathy.interfaces import CONNECTION, \
     CONNECTION_INTERFACE_ALIASING, \
@@ -32,6 +31,7 @@ from telepathy.interfaces import CONNECTION, \
 from telepathy.constants import HANDLE_TYPE_CONTACT
 
 from sugar3.presence.connectionmanager import get_connection_manager
+from sugar3.profile import get_color, get_nick_name
 
 ACCOUNT_MANAGER_SERVICE = 'org.freedesktop.Telepathy.AccountManager'
 CONN_INTERFACE_BUDDY_INFO = 'org.laptop.Telepathy.BuddyInfo'
@@ -243,6 +243,6 @@ class Owner(BaseBuddy):
     def __init__(self):
         BaseBuddy.__init__(self)
 
-        settings = Gio.Settings('org.sugarlabs.user')
-        self.props.nick = settings.get_string('nick')
-        self.props.color = settings.get_string('color')
+        self.props.nick = get_nick_name()
+        self.props.color = get_color().to_string()
+

src/sugar3/profile.py

@@ -27,6 +27,7 @@ from sugar3 import env
 from sugar3 import util
 from sugar3.graphics.xocolor import XoColor
 
+import getpass
 
 _profile = None
 
@@ -62,9 +63,8 @@ class Profile(object):
     privkey_hash = property(fget=_get_privkey_hash)
 
     def is_valid(self):
-        settings = Gio.Settings('org.sugarlabs.user')
-        nick = settings.get_string('nick')
-        color = settings.get_string('color')
+        nick = get_nick_name()
+        color = get_color()
 
         return nick is not '' and \
             color is not '' and \
@@ -204,14 +204,20 @@ def get_profile():
 
 
 def get_nick_name():
-    settings = Gio.Settings('org.sugarlabs.user')
-    return settings.get_string('nick')
+    if 'org.sugarlabs.user' in Gio.Settings.list_schemas():
+        settings = Gio.Settings('org.sugarlabs.user')
+        return settings.get_string('nick')
+    else:
+        return getpass.getuser()
 
 
 def get_color():
-    settings = Gio.Settings('org.sugarlabs.user')
-    color = settings.get_string('color')
-    return XoColor(color)
+    if 'org.sugarlabs.user' in Gio.Settings.list_schemas():
+        settings = Gio.Settings('org.sugarlabs.user')
+        color = settings.get_string('color')
+        return XoColor(color)
+    else:
+        return XoColor()
 
 
 def get_pubkey():