Port to Python 3

.gitignore

@@ -0,0 +1,2 @@
+*.pyc
+*~

README.md

@@ -0,0 +1,27 @@
+Recall Activity 
+===============
+
+The Recall Activity is a series of three memory games, each of increasing difficulty.
+
+How to use?
+===============
+Recall is not a part of Sugar Desktop but can be added. Refer to the following links-
+
+* [How to Get Sugar on sugarlabs.org](https://sugarlabs.org/), 
+* [How to use Sugar](https://help.sugarlabs.org/), and;
+* [How to use Recall](https://wiki.sugarlabs.org/go/Activities/Recall) 
+
+<img src="screenshots/en/2.png" width="75%" title="Recall Activity">
+<img src="screenshots/en/3.png" width="75%" title="Recall Activity">
+The first game prompts the learner to observe which images are repeated in the grid. It starts easy, with just three images, but as more images are added, it becomes more challenging.
+The second game prompts the user to identify the image which had not appeared in the grid. Again, it starts easy, with just three images to remember, but gets very challenging as the number of images increases.
+The third game (an "n-back"-style game) shows images in sequence and prompts the learner to recall which image came earlier. First is asked for the image that was present just previously; then two-previously,... up to six previously.
+<img src="screenshots/en/4.png" width="75%" title="Recall Activity">
+<img src="screenshots/en/5.png" width="75%" title="Recall Activity">
+
+How to upgrade?
+===============
+On Sugar Desktop systems;
+
+* [Use My Settings,](https://help.sugarlabs.org/my_settings.html) [Software Update](https://help.sugarlabs.org/my_settings.html#software-update) 
+* [Use Browse to open ](https://activities.sugarlabs.org/)activities.sugarlabs.org Search for Recall, then download

RecallActivity.py

@@ -9,30 +9,20 @@
 # along with this library; if not, write to the Free Software
 # Foundation, 51 Franklin Street, Suite 500 Boston, MA 02110-1335 USA
 
+import gi
+gi.require_version('Gtk','3.0')
 from gi.repository import Gtk
 from gi.repository import Gdk
 
-import dbus
-import telepathy
 import logging
 from gettext import gettext as _
-from dbus.service import signal
-from dbus.gobject_service import ExportedGObject
 
 from toolbar_utils import button_factory, radio_factory, label_factory, \
     separator_factory
 from utils import json_load, json_dump
 
 from sugar3 import profile
 from sugar3.activity import activity
-from sugar3.presence import presenceservice
-from sugar3.presence.tubeconn import TubeConnection
-
-try:
-    from sugar3.presence.wrapper import CollabWrapper
-    logging.error('USING SUGAR COLLAB WRAPPER!')
-except ImportError:
-    from collabwrapper.collabwrapper import CollabWrapper
 
 from sugar3.graphics.toolbarbox import ToolbarBox
 from sugar3.activity.widgets import ActivityToolbarButton
@@ -54,6 +44,7 @@ class RecallActivity(activity.Activity):
     def __init__(self, handle):
         """ Initialize the toolbars and the game board """
         super(RecallActivity, self).__init__(handle)
+        self.max_participants = 1
 
         self.path = activity.get_bundle_path()
 
@@ -76,7 +67,6 @@ def __init__(self, handle):
 
         self._game = Game(canvas, parent=self, path=self.path,
                           colors=self.colors)
-        self._setup_collab()
         if 'dotlist' in self.metadata:
             self._restore()
         else:
@@ -85,7 +75,7 @@ def __init__(self, handle):
     def _setup_toolbars(self, have_toolbox):
         """ Setup the toolbars. """
 
-        self.max_participants = 4
+        self.max_participants = 1
         toolbox = ToolbarBox()
 
         # Activity toolbar
@@ -166,51 +156,3 @@ def _restore(self):
             game = 0
         self._game.restore_game(dot_list, correct, level, game)
         self._restoring = False
-
-    # Collaboration-related methods
-
-    def _setup_collab(self):
-        """ Setup the Collab Wrapper. """
-        self.initiating = None  # sharing (True) or joining (False)
-        self._collab = CollabWrapper(self)
-        self._collab.connect('message', self.__message_cb)
-
-        owner = self._collab._leader
-        self.owner = owner
-
-        self._game.set_sharing(True)
-
-    def __message_cb(self, collab, buddy, message):
-        action = message.get('action')
-        payload = message.get('payload')
-        if action == 'n':
-            '''Get a new game grid'''
-            self._receive_new_game(payload)
-        elif action == 'p':
-            '''Get a dot click'''
-            self._receive_dot_click(payload)
-
-    def send_new_game(self):
-        ''' Send a new grid to all players '''
-        self._collab.post(dict(
-                action = 'n',
-                payload = json_dump(self._game.save_game())
-            ))
-
-    def _receive_new_game(self, payload):
-        ''' Sharer can start a new game. '''
-        dot_list, correct, level, game = json_load(payload)
-        self._game.restore_game(dot_list, correct, level, game)
-
-    def send_dot_click(self, dot, color):
-        ''' Send a dot click to all the players '''
-        self._collab.post(dict(
-                action = 'p',
-                payload = json_dump([dot, color])
-            ))
-
-    def _receive_dot_click(self, payload):
-        ''' When a dot is clicked, everyone should change its color. '''
-        (dot, color) = json_load(payload)
-        self._game.remote_button_press(dot, color)
-

activity/activity.info

@@ -3,7 +3,7 @@ name = Recall
 activity_version = 6
 license = GPLv3
 bundle_id = org.sugarlabs.RecallActivity
-exec = sugar-activity RecallActivity.RecallActivity
+exec = sugar-activity3 RecallActivity.RecallActivity
 icon = activity-recall
 show_launcher = yes
 summary = memory exercise game