Lots of changes, still work in progress, but good enough to commit for now.

shell/example-activity/example-activity.py

@@ -10,24 +10,152 @@ import pygtk
 pygtk.require('2.0')
 import gtk,sys
 
+################################################################################
+# Code below will be moved to a module someday
+
+class Activity(dbus.service.Object):
+
+    def __init__(self):
+	pass
+
+    def name_owner_changed(self, service_name, old_service_name, new_service_name):
+        #print "in name_owner_changed: svc=%s oldsvc=%s newsvc=%s"%(service_name, old_service_name, new_service_name)
+	if service_name == "com.redhat.Sugar.Shell" and new_service_name == "":
+	    self.activity_on_disconnected_from_shell()
+	#elif service_name == "com.redhat.Sugar.Shell" and old_service_name == "":
+	#    self.activity_on_shell_reappeared()
+
+    def activity_connect_to_shell(self):
+	self.__bus = dbus.SessionBus()
+
+	self.__bus.add_signal_receiver(self.name_owner_changed, dbus_interface = "org.freedesktop.DBus", signal_name = "NameOwnerChanged")
+
+	self.__activity_container_object = self.__bus.get_object("com.redhat.Sugar.Shell", \
+							       "/com/redhat/Sugar/Shell/ActivityContainer")
+	self.__activity_container = dbus.Interface(self.__activity_container_object, \
+						   "com.redhat.Sugar.Shell.ActivityContainer")
+
+	self.__activity_id = self.__activity_container.add_activity("")
+	self.__object_path = "/com/redhat/Sugar/Shell/Activities/%d"%self.__activity_id
+
+	print "object_path = %s"%self.__object_path
+
+	self.__activity_object = dbus.Interface(self.__bus.get_object("com.redhat.Sugar.Shell", self.__object_path), \
+					      "com.redhat.Sugar.Shell.ActivityHost")
+	self.__window_id = self.__activity_object.get_host_xembed_id()
+
+	print "XEMBED window_id = %d"%self.__window_id
+
+	self.__plug = gtk.Plug(self.__window_id)
+
+	# Now let the Activity register a peer service so the Shell can poke it
+	self.__peer_service_name = "com.redhat.Sugar.Activity%d"%self.__activity_id
+	self.__peer_object_name = "/com/redhat/Sugar/Activity/%d"%self.__activity_id
+	self.__service = dbus.service.BusName(self.__peer_service_name, bus=self.__bus)
+        dbus.service.Object.__init__(self, self.__service, self.__peer_object_name)
+
+	self.__activity_object.set_peer_service_name(self.__peer_service_name, self.__peer_object_name)
+
+	self.activity_on_connected_to_shell()
+
+    def activity_get_gtk_plug(self):
+	return self.__plug
+
+    def activity_set_tab_text(self, text):
+	self.__activity_object.set_tab_text(text)
+
+    @dbus.service.method("com.redhat.Sugar.Activity", \
+			 in_signature="", \
+			 out_signature="")
+    def lost_focus(self):
+	self.activity_on_lost_focus()
+
+    @dbus.service.method("com.redhat.Sugar.Activity", \
+			 in_signature="", \
+			 out_signature="")
+    def got_focus(self):
+	self.activity_on_got_focus()
+
+
+    @dbus.service.method("com.redhat.Sugar.Activity", \
+			 in_signature="", \
+			 out_signature="")
+    def close_from_user(self):
+	self.activity_on_close_from_user()
+
+    def activity_get_id(self):
+	return self.__activity_id
+
+    # pure virtual methods
+
+    def activity_on_connected_to_shell(self):
+	print "act %d: you need to override activity_on_connected_to_shell"%self.activity_get_id()
+
+    def activity_on_disconnected_from_shell(self):
+	print "act %d: you need to override activity_on_disconnected_to_shell"%self.activity_get_id()
+
+    def activity_on_close_from_user(self):
+	print "act %d: you need to override activity_on_close_from_user"%self.activity_get_id()
+
+    def activity_on_lost_focus(self):
+	print "act %d: you need to override activity_on_lost_focus"%self.activity_get_id()
+
+    def activity_on_got_focus(self):
+	print "act %d: you need to override activity_on_got_focus"%self.activity_get_id()
+
+def my_exit():
+    sys.exit(0)
+
+def deferred_exit():
+    gobject.timeout_add(0, my_exit)
+
+################################################################################
+
+class ExampleActivity(Activity):
+
+    def __init__(self, name):
+	self.name = name
+
+    def entry_changed(self, entry):
+	self.activity_set_tab_text(entry.get_text())
+    
+    def activity_on_connected_to_shell(self):
+	print "act %d: in activity_on_connected_to_shell"%self.activity_get_id()
+
+	self.activity_set_tab_text(self.name)
+
+	plug = self.activity_get_gtk_plug()
+	self.entry = gtk.Entry()
+	self.entry.set_text(self.name)
+	self.entry.connect("changed", self.entry_changed)
+	plug.add(self.entry)
+	plug.show_all()
+
+    def activity_on_disconnected_from_shell(self):
+	print "act %d: in activity_on_disconnected_to_shell"%self.activity_get_id()
+	print "act %d: Shell disappeared..."%self.activity_get_id()
+	deferred_exit()
+
+    def activity_on_close_from_user(self):
+	print "act %d: in activity_on_close_from_user"%self.activity_get_id()
+	deferred_exit()
+
+    def activity_on_lost_focus(self):
+	print "act %d: in activity_on_lost_focus"%self.activity_get_id()
+
+    def activity_on_got_focus(self):
+	print "act %d: in activity_on_got_focus"%self.activity_get_id()
+
+
 if len(sys.argv) != 2:
     print "usage: example-activity.py <name_of_activity>"
     sys.exit(1)
 
-bus = dbus.SessionBus()
-activity_container_object = bus.get_object("com.redhat.Sugar.Shell", \
-					   "/com/redhat/Sugar/Shell/ActivityContainer")
-activity_container = dbus.Interface(activity_container_object, \
-				    "com.redhat.Sugar.Shell.ActivityContainer")
-
-window_id = activity_container.add_activity(sys.argv[1])
-print "got XEMBED window_id = %d"%window_id
+example_activity = ExampleActivity(sys.argv[1])
+example_activity.activity_connect_to_shell()
 
-plug = gtk.Plug(window_id)
-entry = gtk.Entry()
-entry.set_text(sys.argv[1])
-plug.add(entry)
-plug.show_all()
+example_activity2 = ExampleActivity(sys.argv[1] + " (2nd)")
+example_activity2.activity_connect_to_shell()
 
 gtk.main()
 

shell/src/shell.py

@@ -13,70 +13,163 @@ import gtk
 
 activity_counter = 0
 
-class Activity(dbus.service.Object):
+class ActivityHost(dbus.service.Object):
 
     def __init__(self, activity_container, activity_name):
 	global activity_counter
 
+	self.activity_name = activity_name
+
 	self.activity_container = activity_container
 
-	self.activity_object_name = "/com/redhat/Sugar/Shell/Activity_%d"%activity_counter
+	self.activity_id = activity_counter
 	activity_counter += 1
-	print "object name = %s"%self.activity_object_name
 
-	dbus.service.Object.__init__(self, activity_container.service, self.activity_object_name)
+	self.dbus_object_name = "/com/redhat/Sugar/Shell/Activities/%d"%self.activity_id
+	print "object name = %s"%self.dbus_object_name
+
+	dbus.service.Object.__init__(self, activity_container.service, self.dbus_object_name)
 	self.socket = gtk.Socket()
+	self.socket.set_data("sugar-activity", self)
 	self.socket.show()
 
-	tab_name = gtk.Label(activity_name)
-	activity_container.notebook.append_page(self.socket, tab_name)
+	hbox = gtk.HBox();
+	self.tab_activity_image = gtk.Image()
+	self.tab_activity_image.set_from_stock(gtk.STOCK_CONVERT, gtk.ICON_SIZE_MENU)
+	self.tab_activity_image.show()
+
+	self.tab_label = gtk.Label(self.activity_name)
+	self.tab_label.show()
+
+	self.tab_close_button = gtk.Button()
+	close_image = gtk.Image()
+	close_image.set_from_stock (gtk.STOCK_CLOSE, gtk.ICON_SIZE_MENU)
+	close_image.show()
+	self.tab_close_button.add(close_image)
+	self.tab_close_button.set_relief(gtk.RELIEF_NONE)
+	self.tab_close_button.set_focus_on_click(gtk.FALSE)
+	self.tab_close_button.show()
+	self.tab_close_button.connect("clicked", self.tab_close_button_clicked)
+
+	hbox.set_spacing(4)
+	hbox.pack_start(self.tab_activity_image)
+	hbox.pack_start(self.tab_label)
+	hbox.pack_start(self.tab_close_button)
+	hbox.show()
+	self.activity_container.notebook.append_page(self.socket, hbox)
+
+    def tab_close_button_clicked(self, button):
+	self.peer_service.close_from_user()
+
+    @dbus.service.method("com.redhat.Sugar.Shell.ActivityHost", \
+			 in_signature="", \
+			 out_signature="t")
+    def get_host_xembed_id(self):
+	window_id = self.socket.get_id()
+	print "window_id = %d"%window_id
+	return window_id
+
+    @dbus.service.method("com.redhat.Sugar.Shell.ActivityHost", \
+			 in_signature="ss", \
+			 out_signature="")
+    def set_peer_service_name(self, peer_service_name, peer_object_name):
+	print "peer_service_name = %s, peer_object_name = %s"%(peer_service_name, peer_object_name)
+	self.__peer_service_name = peer_service_name
+	self.__peer_object_name = peer_object_name
+	self.peer_service = dbus.Interface(self.activity_container.bus.get_object( \
+		self.__peer_service_name, self.__peer_object_name), \
+					   "com.redhat.Sugar.Activity")
+
+    @dbus.service.method("com.redhat.Sugar.Shell.ActivityHost", \
+			 in_signature="s", \
+			 out_signature="")
+    def set_tab_text(self, text):
+	self.tab_label.set_text(text)
+
+    def get_host_activity_id(self):
+	return self.activity_id
+
+    def get_object_path(self):
+	return self.dbus_object_name
 
 
 class ActivityContainer(dbus.service.Object):
 
-    def __init__(self, service):
+    def __init__(self, service, bus):
 
 	self.activities = []
 
+	self.bus = bus
 	self.service = service
 
-        dbus.service.Object.__init__(self, service, "/com/redhat/Sugar/Shell/ActivityContainer")
+        dbus.service.Object.__init__(self, self.service, "/com/redhat/Sugar/Shell/ActivityContainer")
+	bus.add_signal_receiver(self.name_owner_changed, dbus_interface = "org.freedesktop.DBus", signal_name = "NameOwnerChanged")
 
 	self.window = gtk.Window()
 	self.window.set_title("OLPC Sugar")
 	self.window.resize(640, 480)
-
 	self.notebook = gtk.Notebook()
-
-	tab_label = gtk.Label("Some tab")
-	empty_label = gtk.Label("This left intentionally blank")
+	tab_label = gtk.Label("My Laptop")
+	empty_label = gtk.Label("This activity could launch other activities / be a help page")
 	empty_label.show()
 	self.notebook.append_page(empty_label, tab_label)
-
 	self.notebook.show()
+	self.notebook.connect("switch-page", self.notebook_tab_changed)
 	self.window.add(self.notebook)
 
 	self.window.connect("destroy", lambda w: gtk.main_quit())
 	self.window.show()
 
+	self.current_activity = None
+
+
+    def notebook_tab_changed(self, notebook, page, page_number):
+	print "in notebook_tab_changed"
+	new_activity = notebook.get_nth_page(page_number).get_data("sugar-activity")
+	print " Current activity: ", self.current_activity
+	print " New activity:     ", new_activity
+
+	if self.current_activity != None:
+	    self.current_activity.peer_service.lost_focus()
+
+	self.current_activity = new_activity
+
+	if self.current_activity != None:
+	    self.current_activity.peer_service.got_focus()
+
+
+    def name_owner_changed(self, service_name, old_service_name, new_service_name):
+        print "in name_owner_changed: svc=%s oldsvc=%s newsvc=%s"%(service_name, old_service_name, new_service_name)
+	for owner, activity in self.activities[:]:
+	    if owner == old_service_name:
+		self.activities.remove((owner, activity))
+	self.__print_activities()
+
 
     @dbus.service.method("com.redhat.Sugar.Shell.ActivityContainer", \
 			 in_signature="s", \
-			 out_signature="t", \
+			 out_signature="i", \
 			 sender_keyword="sender")
     def add_activity(self, activity_name, sender):
 	print "hello world, activity_name = '%s', sender = '%s'"%(activity_name, sender)
-	activity = Activity(self, activity_name)
-	self.activities.append(activity)
-	window_id = activity.socket.get_id()
-	print "window_id = %d"%window_id
-	return window_id
+	activity = ActivityHost(self, activity_name)
+	self.activities.append((sender, activity))
+
+	self.__print_activities()
+	return activity.get_host_activity_id()
+
+    def __print_activities(self):
+	print "__print_activities: %d activities registered"%len(self.activities)
+	i = 0
+	for owner, activity in self.activities:
+	    print "  %d: owner=%s activity_object_name=%s"%(i, owner, activity.dbus_object_name)
+	    i += 1
 
 
 
 session_bus = dbus.SessionBus()
 service = dbus.service.BusName("com.redhat.Sugar.Shell", bus=session_bus)
 
-activityContainer = ActivityContainer(service)
+activityContainer = ActivityContainer(service, session_bus)
 
 gtk.main()