Implement session shutdown. For now we are forcefully

killing activities. We will need to implement some sort
of shutdown notification system but... for now this
works.

sugar/session/session.py

@@ -1,41 +1,59 @@
 import os
+import signal
 from ConfigParser import ConfigParser
 
 import pygtk
 pygtk.require('2.0')
 import gtk
 
-from sugar.shell import shell
+from sugar.shell.shell import Shell
 from sugar import env
 
-def start():
-	shell.main()
+class Session:
+	def __init__(self):
+		self._activity_processes = {}
 
-	activities = []
+	def start(self):
+		shell = Shell()
+		shell.connect('close', self._shell_close_cb)
+		shell.start()
 
-	activities_dirs = []
+		activities = []
+		activities_dirs = []
 		
-	for data_dir in env.get_data_dirs():
-		act_dir = os.path.join(data_dir, env.get_activities_dir())
-		activities_dirs.append(act_dir)
+		for data_dir in env.get_data_dirs():
+			act_dir = os.path.join(data_dir, env.get_activities_dir())
+			activities_dirs.append(act_dir)
 
-	activities_dirs.append(os.path.join(env.get_user_dir(), 'activities'))
+		activities_dirs.append(os.path.join(env.get_user_dir(), 'activities'))
 		
-	for activities_dir in activities_dirs:
-		if os.path.isdir(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 activities_dir in activities_dirs:
+			if os.path.isdir(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 ]
-		os.spawnvp(os.P_NOWAIT, 'python', args)
+		for activity in activities:
+			args = [ 'python', '-m', activity ]
+			pid = os.spawnvp(os.P_NOWAIT, 'python', args)
+			self._activity_processes[activity] = pid
 
-	try:
-		gtk.main()
-	except KeyboardInterrupt:
-		print 'Ctrl+C pressed, exiting...'
+		try:
+			gtk.main()
+		except KeyboardInterrupt:
+			print 'Ctrl+C pressed, exiting...'
+			self.shutdown()
+			
+	def _shell_close_cb(self, shell):
+		self.shutdown()
+	
+	def shutdown(self):
+		# FIXME Obviously we want to notify the activities to
+		# shutt down rather then killing them down forcefully.
+		for name in self._activity_processes.keys():
+			print 'Shutting down %s' % (name) 
+			os.kill(self._activity_processes[name], signal.SIGTERM)

sugar/shell/shell.py

@@ -472,31 +472,44 @@ class ConsoleLogger(dbus.service.Object):
 		buf = console.get_buffer() 
 		buf.insert(buf.get_end_iter(), message)
 
-def main():
-	console = ConsoleLogger()
+class Shell(gobject.GObject):
+	__gsignals__ = {
+		'close': (gobject.SIGNAL_RUN_FIRST, gobject.TYPE_NONE,
+				 ([])),
+	}
 
-	log_writer = LogWriter("Shell", False)
-	log_writer.start()
+	def __init__(self):
+		gobject.GObject.__init__(self)
 
-	session_bus = dbus.SessionBus()
-	service = dbus.service.BusName("com.redhat.Sugar.Shell", bus=session_bus)
+	def start(self):
+		console = ConsoleLogger()
 
-	activity_container = ActivityContainer(service, session_bus)
-	activity_container.show()
+		log_writer = LogWriter("Shell", False)
+		log_writer.start()
 
-	wm = WindowManager(activity_container.window)
-	wm.set_width(640, WindowManager.ABSOLUTE)
-	wm.set_height(480, WindowManager.ABSOLUTE)
-	wm.set_position(WindowManager.CENTER)
-	wm.show()
-	wm.manage()
+		session_bus = dbus.SessionBus()
+		service = dbus.service.BusName("com.redhat.Sugar.Shell", bus=session_bus)
 
-	console.set_parent_window(activity_container.window)
+		activity_container = ActivityContainer(service, session_bus)
+		activity_container.window.connect('destroy', self.__activity_container_destroy_cb)
+		activity_container.show()
+
+		wm = WindowManager(activity_container.window)
+		wm.set_width(640, WindowManager.ABSOLUTE)
+		wm.set_height(480, WindowManager.ABSOLUTE)
+		wm.set_position(WindowManager.CENTER)
+		wm.show()
+		wm.manage()
+		
+		console.set_parent_window(activity_container.window)
+
+	def __activity_container_destroy_cb(self, activity_container):
+		self.emit('close')
 
 if __name__ == "__main__":
-	main()
+	shell = Shell()
+	shell.start()
 	try:
 		gtk.main()
 	except KeyboardInterrupt:
 		print 'Ctrl+c pressed, exiting...'
-		pass

sugar/sugar

@@ -81,8 +81,9 @@ if console:
 	os.environ['SUGAR_USE_CONSOLE'] = 'yes'
 	print 'Redirecting output to the console, press ctrl+d to open it.'
 	
-from sugar.session import session
+from sugar.session.session import Session
 
+session = Session()
 session.start()
 
 if dbus_daemon_pid: