Load session from .activity files

sugar/session/session.py

@@ -1,16 +1,30 @@
 import os
 import sys
+from ConfigParser import ConfigParser
 
 import pygtk
 pygtk.require('2.0')
 import gtk
 
 from sugar.shell import shell
+from sugar import env
 
 def start(console):
 	shell.main()
 
-	activities = ['sugar/chat/chat', 'sugar/browser/browser']
+	activities = []
+	
+	for data_dir in env.get_data_dirs():
+		activities_dir = os.path.join(data_dir, env.get_activities_dir())
+		for filename in os.listdir(activities_dir):
+			if filename.endswith(".activity"):
+				path = os.path.join(activities_dir, filename)
+
+				cp = ConfigParser()
+				cp.read([path])
+				python_class = cp.get('Activity', "python_class")
+
+				activities.append(python_class)
 
 	for activity in activities:
 		args = [ 'python', '-m', activity ]