def shared_setup(self):
""" Called by joined_cb and shared_cb because all of this needs to happen
whether we are sharing or joining the activity """
self.__shared_activity = self.__activity.get_shared_activity()
if self.__shared_activity is None:
self.__logger.error('Failed to share or join activity!')
return
self.__tubes_chan = self.__shared_activity.telepathy_tubes_chan
self.__iface = self.__tubes_chan[TelepathyGLib.IFACE_CHANNEL_TYPE_TUBES]
self.__text_chan = self.__shared_activity.telepathy_text_chan
self.__iface_grp = self.__text_chan[TelepathyGLib.IFACE_CHANNEL_INTERFACE_GROUP]
self.__conn = self.__shared_activity.telepathy_conn
self.__my_handle = self.__conn.GetSelfHandle()
#self.__shared_activity.connect('buddy-joined', self.buddy_joined_cb)
#self.__shared_activity.connect('buddy-left', self.buddy_left_cb)
# takes care of downloading (and then sharing) the slide deck over
# stream tubes
self.__shared_slides = SharedSlides(
self.__is_initiating,
self.__cpxo_path,
self.__shared_activity,
self.__activity.read_file)
self.__shared_slides.connect(
'deck-download-complete',
self.deck_download_complete_cb)
# now for the dbus tube
self.__iface.connect_to_signal('NewTube', self.new_tube_cb)
if (self.__is_initiating):
self.__logger.debug(
"We are sharing, making a dbus tube and setting locked nav mode.")
self.lock_nav()
id = self.__iface.OfferDBusTube(SERVICE, {})
else:
self.__logger.debug(
"We are joining, looking for the global dbus tube.")
self.__tubes_chan[TelepathyGLib.IFACE_CHANNEL_TYPE_TUBES].ListTubes(
reply_handler=self.list_tubes_reply_cb,
error_handler=self.list_tubes_error_cb)
def shared_setup(self):
""" Called by joined_cb and shared_cb because all of this needs to happen
whether we are sharing or joining the activity """
self.__shared_activity = self.__activity.get_shared_activity()
if self.__shared_activity is None:
self.__logger.error('Failed to share or join activity!')
return
self.__tubes_chan = self.__shared_activity.telepathy_tubes_chan
self.__iface = self.__tubes_chan[telepathy.CHANNEL_TYPE_TUBES]
self.__text_chan = self.__shared_activity.telepathy_text_chan
self.__iface_grp = self.__text_chan[telepathy.CHANNEL_INTERFACE_GROUP]
self.__conn = self.__shared_activity.telepathy_conn
self.__my_handle = self.__conn.GetSelfHandle()
#self.__shared_activity.connect('buddy-joined', self.buddy_joined_cb)
#self.__shared_activity.connect('buddy-left', self.buddy_left_cb)
# takes care of downloading (and then sharing) the slide deck over stream tubes
self.__shared_slides = SharedSlides(self.__is_initiating, self.__cpxo_path,
self.__shared_activity, self.__activity.read_file)
self.__shared_slides.connect('deck-download-complete', self.deck_download_complete_cb)
# now for the dbus tube
self.__iface.connect_to_signal('NewTube', self.new_tube_cb)
if (self.__is_initiating):
self.__logger.debug("We are sharing, making a dbus tube and setting locked nav mode.")
self.lock_nav()
id = self.__iface.OfferDBusTube(SERVICE, {})
else:
self.__logger.debug("We are joining, looking for the global dbus tube.")
self.__tubes_chan[telepathy.CHANNEL_TYPE_TUBES].ListTubes(
reply_handler=self.list_tubes_reply_cb,
error_handler=self.list_tubes_error_cb)
class Shared(ExportedGObject):
__gsignals__ = {
'navigation-lock-change':
(gobject.SIGNAL_RUN_LAST, gobject.TYPE_NONE, (gobject.TYPE_BOOLEAN, )),
'deck-download-complete':
(gobject.SIGNAL_RUN_LAST, gobject.TYPE_NONE, ()),
}
def __init__(self, activity, deck, work_path):
gobject.GObject.__init__(self)
self.__activity = activity
self.__deck = deck
self.__logger = logging.getLogger('Shared')
self.__is_initiating = True # defaults to instructor
self.__shared_slides = None
self.__got_dbus_tube = False
self.__locked = False
self.__pservice = presenceservice.get_instance()
#self.__owner = self.__pservice.get_owner()
self.__cpxo_path = os.path.join(work_path, 'deck.cpxo')
print 'cpxo_path', self.__cpxo_path
self.__activity.connect('shared', self.shared_cb)
self.__activity.connect('joined', self.joined_cb)
def shared_cb(self, activity):
""" Called when the activity is shared """
self.__logger.debug('The activity has been shared.')
self.__is_initiating = True
print 'shared_cb call write_file', self.__cpxo.path
self.__activity.write_file(self.__cpxo_path)
self.__deck.set_is_initiating(is_init=True)
self.shared_setup()
def joined_cb(self, activity):
""" Called when the activity is joined """
self.__logger.debug('Joined another activity.')
self.__is_initiating = False
self.__deck.set_is_initiating(is_init=False)
# for showing slide deck download progress
activity.do_progress_view()
activity.set_progress(0.0)
self.shared_setup()
def shared_setup(self):
""" Called by joined_cb and shared_cb because all of this needs to happen
whether we are sharing or joining the activity """
self.__shared_activity = self.__activity.get_shared_activity()
if self.__shared_activity is None:
self.__logger.error('Failed to share or join activity!')
return
self.__tubes_chan = self.__shared_activity.telepathy_tubes_chan
self.__iface = self.__tubes_chan[telepathy.CHANNEL_TYPE_TUBES]
self.__text_chan = self.__shared_activity.telepathy_text_chan
self.__iface_grp = self.__text_chan[telepathy.CHANNEL_INTERFACE_GROUP]
self.__conn = self.__shared_activity.telepathy_conn
self.__my_handle = self.__conn.GetSelfHandle()
#self.__shared_activity.connect('buddy-joined', self.buddy_joined_cb)
#self.__shared_activity.connect('buddy-left', self.buddy_left_cb)
# takes care of downloading (and then sharing) the slide deck over stream tubes
self.__shared_slides = SharedSlides(self.__is_initiating,
self.__cpxo_path,
self.__shared_activity,
self.__activity.read_file)
self.__shared_slides.connect('deck-download-complete',
self.deck_download_complete_cb)
# now for the dbus tube
self.__iface.connect_to_signal('NewTube', self.new_tube_cb)
if (self.__is_initiating):
self.__logger.debug(
"We are sharing, making a dbus tube and setting locked nav mode."
)
self.lock_nav()
id = self.__iface.OfferDBusTube(SERVICE, {})
else:
self.__logger.debug(
"We are joining, looking for the global dbus tube.")
self.__tubes_chan[telepathy.CHANNEL_TYPE_TUBES].ListTubes(
reply_handler=self.list_tubes_reply_cb,
error_handler=self.list_tubes_error_cb)
""" --- START DBUS TUBE CODE --- """
def deck_download_complete_cb(self, object):
""" Catches the local deck_download_complete signal and sends the appropriate dbus signal """
self.__logger.debug(
"Deck download is complete, sending Deck_Download_Complete dbus signal."
)
self.Deck_Download_Complete()
self.emit('deck-download-complete')
def student_dl_complete_cb(self, sender):
""" Catches the Deck_Download_Complete dbus signal from students, lets us know that they
are ready to have initial state information pushed onto them """
self.__logger.debug(
"Got Deck_Download_Complete dbus signal, pushing initial state info to student."
)
proxy_object = self.__dbus_tube.get_object(sender, PATH)
proxy_object.Push_Initial_State(self.__locked,
self.__deck.getIndex(),
dbus_interface=IFACE)
def list_tubes_reply_cb(self, tubes):
for tube_info in tubes:
self.new_tube_cb(*tube_info)
def list_tubes_error_cb(self, e):
self.__logger.error('ListTubes() failed: %s', e)
def new_tube_cb(self, tube_id, initiator, type, service, params, state):
self.__logger.debug(
'New tube: ID=%d initator=%d type=%d service=%s params=%r state=%d',
tube_id, initiator, type, service, params, state)
if (not self.__got_dbus_tube and type == telepathy.TUBE_TYPE_DBUS
and service == SERVICE):
if (state == telepathy.TUBE_STATE_LOCAL_PENDING):
self.__iface.AcceptDBusTube(tube_id)
self.__dbus_tube = TubeConnection(self.__conn,
self.__iface,
tube_id,
group_iface=self.__iface_grp)
self.__got_dbus_tube = True
self.__logger.debug("Got our dbus tube!")
# lots of stuff to do once we get our tube
if (self.__is_initiating):
self.__deck.connect('slide-changed',
self.send_slide_changed_signal)
self.__deck.connect('local-ink-added', self.send_ink_path)
self.__deck.connect('instructor-ink-cleared',
self.instr_clear_ink_cb)
self.__deck.connect('instructor-ink-removed',
self.instr_remove_ink_cb)
self.__deck.connect('ink-broadcast', self.bcast_submission_cb)
self.__dbus_tube.add_signal_receiver(
self.student_dl_complete_cb,
'Deck_Download_Complete',
IFACE,
path=PATH,
sender_keyword='sender')
self.__dbus_tube.add_signal_receiver(
self.receive_submission_cb,
'Send_Submission',
IFACE,
path=PATH)
else:
self.__deck.connect('ink-submitted', self.submit_ink_cb)
self.__dbus_tube.add_signal_receiver(self.slide_changed_cb,
'Slide_Changed',
IFACE,
path=PATH)
self.__dbus_tube.add_signal_receiver(self.lock_nav_cb,
'Lock_Nav',
IFACE,
path=PATH)
self.__dbus_tube.add_signal_receiver(self.add_ink_path_cb,
'Add_Ink_Path',
IFACE,
path=PATH)
self.__dbus_tube.add_signal_receiver(
self.recv_instr_clear_ink_cb,
'Instructor_Clear_Ink',
IFACE,
path=PATH)
self.__dbus_tube.add_signal_receiver(
self.recv_instr_remove_ink_cb,
'Instructor_Remove_Ink',
IFACE,
path=PATH)
self.__dbus_tube.add_signal_receiver(
self.receive_submission_cb,
'Bcast_Submission',
IFACE,
path=PATH)
#self.__dbus_tube.watch_participants(self.participant_change_cb)
super(Shared, self).__init__(self.__dbus_tube, PATH)
def participant_change_cb(self, added, removed):
""" Callback on instructor XO for when someone joins or leaves the tube """
for handle, bus_name in added:
buddy = self._get_buddy(handle)
if buddy is not None:
if handle != self.__my_handle and self.__is_initiating:
self.__logger.debug("New student joined: %s",
buddy.props.nick)
for handle in removed:
buddy = self._get_buddy(handle)
if buddy is not None:
self.__logger.debug('Buddy %s was removed' % buddy.props.nick)
@signal(dbus_interface=IFACE, signature='u')
def Slide_Changed(self, slide_num):
""" Signals joiners to move to given slide """
self.__logger.debug(
"Sending the Slide_Changed signal with slide num %d.", slide_num)
pass
@signal(dbus_interface=IFACE, signature='')
def Deck_Download_Complete(self):
""" Signal from the student informing instructor that the deck download has finished """
self.__logger.debug(
"Sending Deck_Download_Complete signal, ready for initial state info."
)
pass
@signal(dbus_interface=IFACE, signature='u')
def Lock_Nav(self, lock):
""" Signals joiners to lock or unlock navigation """
self.__logger.debug("Sending Lock_Nav signal with bool %u", lock)
pass
@method(dbus_interface=IFACE, in_signature='uu', out_signature='')
def Push_Initial_State(self, locked, slide_idx):
""" Called on student XO to push initial state info """
# push current slide index and go to that slide
self.__deck.goToIndex(slide_idx, is_local=False)
# push nav lock information
if locked:
self.lock_nav()
else:
self.unlock_nav()
def send_slide_changed_signal(self, widget):
""" Arbitrates the sending of the Slide_Changed signal """
self.__logger.debug("Got the slide-changed signal.")
if self.__locked:
self.__logger.debug(
"Navigation is locked, sending Slide_Changed to students.")
self.Slide_Changed(self.__deck.getIndex())
def slide_changed_cb(self, slide_idx):
""" Called on the joiners when they receive the Slide_Changed signal """
self.__logger.debug(
"Received the Slide_Changed signal and changing to slide %d.",
slide_idx)
self.__deck.goToIndex(slide_idx, is_local=False)
def lock_nav_cb(self, lock):
""" Called on joiners when they receive the Lock_Nav signal """
self.__logger.debug("Received the Lock_Nav signal with bool %u", lock)
if (lock):
self.lock_nav()
else:
self.unlock_nav()
def lock_mode_switch(self, widget=None):
""" Switches the lock mode from locked to unlocked and vice versa """
# first switch our own lock mode
if (self.__locked):
self.unlock_nav()
else:
self.lock_nav()
# if we are instructor, tell student XOs to go into our new lock mode
if (self.__is_initiating):
self.Lock_Nav(self.__locked)
def lock_nav(self):
self.__logger.debug("Locking navigation.")
self.__locked = True
# if we are the instructor, force students to jump to our slide
if self.__got_dbus_tube and self.__is_initiating:
self.Slide_Changed(self.__deck.getIndex())
self.__deck.set_locked_mode(locked=True)
self.emit('navigation-lock-change', self.__locked)
def unlock_nav(self):
self.__logger.debug("Unlocking navigation.")
self.__locked = False
self.__deck.set_locked_mode(locked=False)
self.emit('navigation-lock-change', self.__locked)
def send_ink_path(self, widget, inkstr):
self.__logger.debug("send_ink_path called")
if (self.__is_initiating and self.__got_dbus_tube):
self.Add_Ink_Path(self.__deck.getIndex(), inkstr)
@signal(dbus_interface=IFACE, signature='us')
def Add_Ink_Path(self, slide_idx, pathstr):
self.__logger.debug("Sending new ink path")
pass
def _get_buddy(self, cs_handle):
"""Get a Buddy from a channel specific handle."""
self.__logger.debug('Trying to find owner of handle %u...', cs_handle)
my_csh = self.__iface_grp.GetSelfHandle()
self.__logger.debug('My handle in that group is %u', my_csh)
if my_csh == cs_handle:
handle = self.__conn.GetSelfHandle()
self.__logger.debug('CS handle %u belongs to me, %u', cs_handle,
handle)
elif group.GetGroupFlags(
) & telepathy.CHANNEL_GROUP_FLAG_CHANNEL_SPECIFIC_HANDLES:
handle = group.GetHandleOwners([cs_handle])[0]
self.__logger.debug('CS handle %u belongs to %u', cs_handle,
handle)
else:
handle = cs_handle
self.__logger.debug('non-CS handle %u belongs to itself', handle)
# XXX: deal with failure to get the handle owner
assert handle != 0
return self.__pservice.get_buddy_by_telepathy_handle(
self.__conn.service_name, self.__conn.object_path, handle)
def add_ink_path_cb(self, idx, inkstr):
self.__logger.debug("Received new ink path")
self.__deck.addInkToSlide(inkstr, islocal=False, n=idx)
def submit_ink_cb(self, widget, inks, text):
if not self.__is_initiating and self.__got_dbus_tube:
cur_idx = self.__deck.getIndex()
my_csh = self.__iface_grp.GetSelfHandle()
buddy = self._get_buddy(my_csh)
if buddy is not None:
sender = buddy.props.nick
else:
sender = 'Unknown'
self.__logger.debug("Sending submission: idx '%d', sender '%s'.",
cur_idx, sender)
self.Send_Submission(sender, cur_idx, inks, text)
@signal(dbus_interface=IFACE, signature='suss')
def Send_Submission(self, sender, slide_idx, inks, text):
pass
def receive_submission_cb(self, sender, slide_idx, inks, text):
self.__logger.debug("Received submission from '%s'.", sender)
self.__deck.addSubmission(sender, inks, text, slide_idx)
def bcast_submission_cb(self, widget, whofrom, inks, text):
if self.__is_initiating and self.__got_dbus_tube:
cur_idx = self.__deck.getIndex()
self.Bcast_Submission(whofrom, cur_idx, inks, text)
@signal(dbus_interface=IFACE, signature='suss')
def Bcast_Submission(self, sender, slide_idx, inks, text):
pass
def instr_clear_ink_cb(self, widget, idx):
if self.__is_initiating and self.__got_dbus_tube:
self.Instructor_Clear_Ink(idx)
@signal(dbus_interface=IFACE, signature='u')
def Instructor_Clear_Ink(self, idx):
pass
def recv_instr_clear_ink_cb(self, idx):
self.__deck.clearInstructorInk(idx)
def instr_remove_ink_cb(self, widget, uid, idx):
if self.__is_initiating and self.__got_dbus_tube:
self.Instructor_Remove_Ink(uid, idx)
@signal(dbus_interface=IFACE, signature='uu')
def Instructor_Remove_Ink(self, uid, idx):
pass
def recv_instr_remove_ink_cb(self, uid, idx):
self.__deck.removeInstructorPathByUID(uid, idx)
""" --- END DBUS TUBE CODE --- """
# DEPRECATED
def buddy_joined_cb(self, activity, buddy):
""" Called when a buddy joins the activity """
if self.__is_initiating is True:
utils.run_dialog("Instructor", buddy.props.nick + " has joined!")
# DEPRECATED
def buddy_left_cb(self, activity, buddy):
""" Called when a buddy leaves the activity """
if self.__is_initiating is True:
utils.run_dialog("Instructor", buddy.props.nick + " has left!")
class Shared(ExportedGObject):
__gsignals__ = {
'navigation-lock-change' : (gobject.SIGNAL_RUN_LAST, gobject.TYPE_NONE, (gobject.TYPE_BOOLEAN,)),
'deck-download-complete' : (gobject.SIGNAL_RUN_LAST, gobject.TYPE_NONE, ()),
}
def __init__(self, arbiter, work_path):
gobject.GObject.__init__(self)
self.__arbiter = arbiter
self.__logger = logging.getLogger('Shared')
self.__logger.setLevel(logging.DEBUG)
self.__sharing = False
self.__shared_slides = None
self.__got_dbus_tube = False
self.__locked = False
self.__pservice = presenceservice.get_instance()
#self.__owner = self.__pservice.get_owner()
self.__cpxo_path = os.path.join(work_path, 'deck.cpxo')
self.__arbiter.connect_shared(self.shared_cb)
self.__arbiter.connect_joined(self.joined_cb)
self.__logger.debug('Hello from Shared. Waiting to become sharer or joiner.')
def get_is_instructor(self):
""" Returns a flag that indicates whether we shared the activity.
Also called 'instructor mode'. """
return self.__sharing
def get_lock_mode(self):
""" Returns a flag that indicates whether student navigation is locked. """
return self.__locked
def shared_cb(self, activity):
""" Called when the activity is shared """
self.__logger.debug('The activity has been shared.')
self.__sharing = True
self.__arbiter.do_write_file(self.__cpxo_path)
# connect to local instructor signals
self.__arbiter.connect_quitting(self.activity_quit_cb)
self.__arbiter.connect_slide_changed(self.send_slide_changed_signal_cb)
self.__arbiter.connect_local_ink_added(self.send_ink_path_cb)
self.__arbiter.connect_instructor_ink_cleared(self.instr_clear_ink_cb)
self.__arbiter.connect_instructor_ink_removed(self.instr_remove_ink_cb)
self.__arbiter.connect_ink_broadcast(self.bcast_submission_cb)
self.__arbiter.connect_lock_button_clicked(self.lock_mode_switch)
self.shared_setup()
def joined_cb(self, activity):
""" Called when the activity is joined """
self.__logger.debug('Joined another activity.')
self.__sharing = False
# for showing slide deck download progress
activity.do_progress_view()
activity.set_progress(0.0)
# connect to local student signals
self.__arbiter.connect_ink_submitted(self.submit_ink_cb)
self.shared_setup()
def shared_setup(self):
""" Called by joined_cb and shared_cb because all of this needs to happen
whether we are sharing or joining the activity """
self.__shared_activity = self.__arbiter.get_shared_activity()
if self.__shared_activity is None:
self.__logger.error('Failed to share or join activity!')
return
self.__tubes_chan = self.__shared_activity.telepathy_tubes_chan
self.__iface = self.__tubes_chan[telepathy.CHANNEL_TYPE_TUBES]
self.__text_chan = self.__shared_activity.telepathy_text_chan
self.__iface_grp = self.__text_chan[telepathy.CHANNEL_INTERFACE_GROUP]
self.__conn = self.__shared_activity.telepathy_conn
self.__my_handle = self.__conn.GetSelfHandle()
#self.__shared_activity.connect('buddy-joined', self.buddy_joined_cb)
#self.__shared_activity.connect('buddy-left', self.buddy_left_cb)
# takes care of downloading (and then sharing) the slide deck over stream tubes
self.__shared_slides = SharedSlides(self.__sharing, self.__cpxo_path,
self.__shared_activity, self.__arbiter.do_read_file)
self.__shared_slides.connect('deck-download-complete', self.deck_download_complete_cb)
# now for the dbus tube
self.__iface.connect_to_signal('NewTube', self.new_tube_cb)
if (self.__sharing):
self.__logger.debug("We are sharing, making a dbus tube and setting locked nav mode.")
self.lock_nav()
id = self.__iface.OfferDBusTube(SERVICE, {})
else:
self.__logger.debug("We are joining, looking for the global dbus tube.")
self.__iface.ListTubes( reply_handler=self.list_tubes_reply_cb,
error_handler=self.list_tubes_error_cb )
def lock_mode_switch(self, widget=None):
""" Switches the lock mode from locked to unlocked and vice versa """
# first switch our own lock mode
if (self.__locked):
self.unlock_nav()
else:
self.lock_nav()
# if we are instructor, tell student XOs to go into our new lock mode
if (self.__sharing):
self.Lock_Nav(self.__locked)
def lock_nav(self):
self.__logger.debug("Locking navigation.")
self.__locked = True
# if we are the instructor, force students to jump to our slide
if self.__got_dbus_tube and self.__sharing:
self.Slide_Changed(self.__arbiter.get_slide_index())
self.emit('navigation-lock-change', self.__locked)
def unlock_nav(self):
self.__logger.debug("Unlocking navigation.")
self.__locked = False
self.emit('navigation-lock-change', self.__locked)
def deck_download_complete_cb(self, object):
""" Catches the deck_download_complete signal from SharedSlides and sends a local
and dbus signal. """
self.__logger.debug("Deck download is complete, sending Deck_Download_Complete dbus signal.")
self.Deck_Download_Complete()
self.emit('deck-download-complete')
def student_dl_complete_cb(self, sender):
""" Catches the Deck_Download_Complete dbus signal from students, lets us know that they
are ready to have initial state information pushed onto them """
self.__logger.debug("Got Deck_Download_Complete dbus signal, pushing initial state info to student.")
proxy_object = self.__dbus_tube.get_object(sender, PATH)
proxy_object.Push_Initial_State(self.__locked, self.__arbiter.get_slide_index(),
dbus_interface=IFACE)
def list_tubes_reply_cb(self, tubes):
for tube_info in tubes:
self.new_tube_cb(*tube_info)
def list_tubes_error_cb(self, e):
self.__logger.error('ListTubes() failed: %s', e)
def new_tube_cb(self, tube_id, initiator, type, service, params, state):
self.__logger.debug('New tube: ID=%d initator=%d type=%d service=%s params=%r state=%d',
tube_id, initiator, type, service, params, state)
if (not self.__got_dbus_tube and type == telepathy.TUBE_TYPE_DBUS and service == SERVICE):
if( state == telepathy.TUBE_STATE_LOCAL_PENDING):
self.__iface.AcceptDBusTube(tube_id)
self.__dbus_tube = TubeConnection(self.__conn, self.__iface, tube_id,
group_iface=self.__iface_grp)
self.__got_dbus_tube = True
self.__logger.debug("Got our dbus tube!")
# lots of stuff to do once we get our tube
if (self.__sharing):
# connect to dbus signals sent by students:
self.__dbus_tube.add_signal_receiver(self.student_dl_complete_cb, 'Deck_Download_Complete',
IFACE, path=PATH, sender_keyword='sender')
self.__dbus_tube.add_signal_receiver(self.receive_submission_cb, 'Send_Submission',
IFACE, path=PATH)
else:
# connect to dbus signals sent by instructor
self.__dbus_tube.add_signal_receiver(self.slide_changed_cb, 'Slide_Changed',
IFACE, path=PATH)
self.__dbus_tube.add_signal_receiver(self.lock_nav_cb, 'Lock_Nav',
IFACE, path=PATH)
self.__dbus_tube.add_signal_receiver(self.add_ink_path_cb, 'Add_Ink_Path',
IFACE, path=PATH)
self.__dbus_tube.add_signal_receiver(self.recv_instr_clear_ink_cb, 'Instructor_Clear_Ink',
IFACE, path=PATH)
self.__dbus_tube.add_signal_receiver(self.recv_instr_remove_ink_cb, 'Instructor_Remove_Ink',
IFACE, path=PATH)
self.__dbus_tube.add_signal_receiver(self.receive_submission_cb, 'Bcast_Submission',
IFACE, path=PATH)
#self.__dbus_tube.watch_participants(self.participant_change_cb)
super(Shared, self).__init__(self.__dbus_tube, PATH)
# --- BEGIN Instructor CallBacks ---
# UNUSED
def participant_change_cb(self, added, removed):
""" Callback on instructor XO for when someone joins or leaves the tube """
for handle, bus_name in added:
buddy = self._get_buddy(handle)
if buddy is not None:
if handle != self.__my_handle and self.__sharing:
self.__logger.debug("New student joined: %s", buddy.props.nick)
for handle in removed:
buddy = self._get_buddy(handle)
if buddy is not None:
self.__logger.debug('Buddy %s was removed' % buddy.props.nick)
def activity_quit_cb(self, widget):
""" Called when the activity is quit. """
self.__logger.debug("Activity is quitting. Making sure student navigation is unlocked.")
if self.__locked:
self.lock_mode_switch()
def send_slide_changed_signal_cb(self, widget):
""" Arbitrates the sending of the Slide_Changed signal """
self.__logger.debug("Got the slide-changed signal.")
if self.__locked:
self.__logger.debug("Navigation is locked, sending Slide_Changed to students.")
self.Slide_Changed(self.__arbiter.get_slide_index())
def send_ink_path_cb(self, widget, inkstr):
self.__logger.debug("send_ink_path_cb called")
if (self.__sharing and self.__got_dbus_tube):
self.Add_Ink_Path(self.__arbiter.get_slide_index(), inkstr)
def receive_submission_cb(self, sender, slide_idx, inks, text):
self.__logger.debug("Received submission from '%s'.", sender)
self.__arbiter.do_add_submission(sender, inks, text, slide_idx)
def bcast_submission_cb(self, widget, whofrom, inks, text):
if self.__sharing and self.__got_dbus_tube:
cur_idx = self.__arbiter.get_slide_index()
self.Bcast_Submission(whofrom, cur_idx, inks, text)
def instr_clear_ink_cb(self, widget, idx):
if self.__sharing and self.__got_dbus_tube:
self.Instructor_Clear_Ink(idx)
def instr_remove_ink_cb(self, widget, uid, idx):
if self.__sharing and self.__got_dbus_tube:
self.Instructor_Remove_Ink(uid, idx)
# --- END Instructor CallBacks ---
# --- BEGIN Instructor DBus Signals/Methods ---
@signal(dbus_interface=IFACE, signature='uu')
def Instructor_Remove_Ink(self, uid, idx):
pass
@signal(dbus_interface=IFACE, signature='u')
def Instructor_Clear_Ink(self, idx):
pass
@signal(dbus_interface=IFACE, signature='u')
def Slide_Changed(self, slide_num):
""" Signals joiners to move to given slide """
self.__logger.debug("Sending the Slide_Changed signal with slide num %d.", slide_num)
pass
@signal(dbus_interface=IFACE, signature='u')
def Lock_Nav(self, lock):
""" Signals joiners to lock or unlock navigation """
self.__logger.debug("Sending Lock_Nav signal with bool %u", lock)
pass
@signal(dbus_interface=IFACE, signature='us')
def Add_Ink_Path(self, slide_idx, pathstr):
self.__logger.debug("Sending new ink path")
pass
@signal(dbus_interface=IFACE, signature='suss')
def Bcast_Submission(self, sender, slide_idx, inks, text):
pass
# --- END Instructor DBus Signals/Methods ---
# --- BEGIN Student CallBacks ---
def recv_instr_remove_ink_cb(self, uid, idx):
self.__arbiter.do_remove_instructor_path_by_uid(uid, idx)
def recv_instr_clear_ink_cb(self, idx):
self.__arbiter.do_clear_instructor_ink(idx)
def slide_changed_cb(self, slide_idx):
""" Called on the joiners when they receive the Slide_Changed dbus signal """
self.__logger.debug("Received the Slide_Changed signal and changing to slide %d.",
slide_idx)
self.__arbiter.do_goto_slide(slide_idx, local_request=False)
def lock_nav_cb(self, lock):
""" Called on joiners when they receive the Lock_Nav dbus signal """
self.__logger.debug("Received the Lock_Nav signal with bool %u", lock)
if (lock):
self.lock_nav()
else:
self.unlock_nav()
def add_ink_path_cb(self, idx, inkstr):
self.__logger.debug("Received new ink path")
self.__arbiter.do_add_ink_to_slide(inkstr, local_request=False, n=idx)
def submit_ink_cb(self, widget, inks, text):
if not self.__sharing and self.__got_dbus_tube:
cur_idx = self.__arbiter.get_slide_index()
my_csh = self.__iface_grp.GetSelfHandle()
buddy = self._get_buddy(my_csh)
if buddy is not None:
sender = buddy.props.nick
else:
sender = 'Unknown'
self.__logger.debug("Sending submission: idx '%d', sender '%s'.", cur_idx, sender)
self.Send_Submission(sender, cur_idx, inks, text)
# --- END Student CallBacks ---
# --- BEGIN Student DBus Signals/Methods ---
@signal(dbus_interface=IFACE, signature='')
def Deck_Download_Complete(self):
""" Signal from the student informing instructor that the deck download has finished """
self.__logger.debug("Sending Deck_Download_Complete signal, ready for initial state info.")
pass
@signal(dbus_interface=IFACE, signature='suss')
def Send_Submission(self, sender, slide_idx, inks, text):
pass
@method(dbus_interface=IFACE, in_signature='uu', out_signature='')
def Push_Initial_State(self, locked, slide_idx):
""" Called on student XO to push initial state info """
self.__logger.debug("Got initial state data from instructor: locked? %u, slide? %u",
locked, slide_idx)
self.__arbiter.do_goto_slide(slide_idx, local_request=False)
if locked:
self.lock_nav()
else:
self.unlock_nav()
# --- END Student DBus Signals/Methods ---
# BEGIN Private Methods
def _get_buddy(self, cs_handle):
"""Get a Buddy from a channel specific handle."""
self.__logger.debug('Trying to find owner of handle %u...', cs_handle)
my_csh = self.__iface_grp.GetSelfHandle()
self.__logger.debug('My handle in that group is %u', my_csh)
if my_csh == cs_handle:
handle = self.__conn.GetSelfHandle()
self.__logger.debug('CS handle %u belongs to me, %u', cs_handle, handle)
elif group.GetGroupFlags() & telepathy.CHANNEL_GROUP_FLAG_CHANNEL_SPECIFIC_HANDLES:
handle = group.GetHandleOwners([cs_handle])[0]
self.__logger.debug('CS handle %u belongs to %u', cs_handle, handle)
else:
handle = cs_handle
self.__logger.debug('non-CS handle %u belongs to itself', handle)
# XXX: deal with failure to get the handle owner
assert handle != 0
return self.__pservice.get_buddy_by_telepathy_handle(
self.__conn.service_name, self.__conn.object_path, handle)
# END Private Methods
# DEPRECATED
def buddy_joined_cb(self, activity, buddy):
""" Called when a buddy joins the activity """
if self.__sharing is True:
utils.run_dialog("Instructor", buddy.props.nick + " has joined!")
# DEPRECATED
def buddy_left_cb(self, activity, buddy):
""" Called when a buddy leaves the activity """
if self.__sharing is True:
utils.run_dialog("Instructor", buddy.props.nick + " has left!")
