예제 #1
0
    def __init__(self, handle):
        ''' Initiate activity. '''
        super(FractionBounceActivity, self).__init__(handle)

        self.nick = profile.get_nick_name()
        if profile.get_color() is not None:
            self.colors = profile.get_color().to_string().split(',')
        else:
            self.colors = ['#A0FFA0', '#FF8080']

        self.add_events(gtk.gdk.VISIBILITY_NOTIFY_MASK)
        self.connect('visibility-notify-event', self.__visibility_notify_cb)

        self.max_participants = 4  # sharing

        self._setup_toolbars()
        self._setup_dispatch_table()
        canvas = self._setup_canvas()

        # Read any custom fractions from the project metadata
        if 'custom' in self.metadata:
            custom = self.metadata['custom']
        else:
            custom = None

        # Initialize the canvas
        self.bounce_window = Bounce(canvas, activity.get_bundle_path(), self)

        # Restore any custom fractions
        if custom is not None:
            fractions = custom.split(',')
            for f in fractions:
                self.bounce_window.add_fraction(f)

        self._setup_presence_service()
    def __init__(self, handle):
        ''' Initiate activity. '''
        super(FractionBounceActivity, self).__init__(handle)

        self.nick = profile.get_nick_name()
        if profile.get_color() is not None:
            self._colors = profile.get_color().to_string().split(',')
        else:
            self._colors = ['#A0FFA0', '#FF8080']

        self.max_participants = 4  # sharing
        self._playing = True

        self._setup_toolbars()
        self._setup_dispatch_table()
        canvas = self._setup_canvas()

        # Read any custom fractions from the project metadata
        if 'custom' in self.metadata:
            custom = self.metadata['custom']
        else:
            custom = None

        self._current_ball = 'soccerball'

        self._toolbar_was_expanded = False

        # Initialize the canvas
        self._bounce_window = Bounce(canvas, activity.get_bundle_path(), self)

        Gdk.Screen.get_default().connect('size-changed', self._configure_cb)

        # Restore any custom fractions
        if custom is not None:
            fractions = custom.split(',')
            for f in fractions:
                self._bounce_window.add_fraction(f)

        if self.shared_activity:
            # We're joining
            if not self.get_shared():
                xocolors = XoColor(profile.get_color().to_string())
                share_icon = Icon(icon_name='zoom-neighborhood',
                                  xo_color=xocolors)
                self._joined_alert = NotifyAlert()
                self._joined_alert.props.icon = share_icon
                self._joined_alert.props.title = _('Please wait')
                self._joined_alert.props.msg = _('Starting connection...')
                self._joined_alert.connect('response', self._alert_cancel_cb)
                self.add_alert(self._joined_alert)

                self._label.set_label(_('Wait for the sharer to start.'))

                # Wait for joined signal
                self.connect("joined", self._joined_cb)

        self._setup_sharing()
    def __init__(self, handle):
        ''' Initiate activity. '''
        super(FractionBounceActivity, self).__init__(handle)

        self.nick = profile.get_nick_name()
        if profile.get_color() is not None:
            self._colors = profile.get_color().to_string().split(',')
        else:
            self._colors = ['#A0FFA0', '#FF8080']

        self.max_participants = 4  # sharing
        self._playing = True

        self._setup_toolbars()
        self._setup_dispatch_table()
        canvas = self._setup_canvas()

        # Read any custom fractions from the project metadata
        if 'custom' in self.metadata:
            custom = self.metadata['custom']
        else:
            custom = None

        self._current_ball = 'soccerball'

        self._toolbar_was_expanded = False

        # Initialize the canvas
        self._bounce_window = Bounce(canvas, activity.get_bundle_path(), self)

        Gdk.Screen.get_default().connect('size-changed', self._configure_cb)

        # Restore any custom fractions
        if custom is not None:
            fractions = custom.split(',')
            for f in fractions:
                self._bounce_window.add_fraction(f)

        if self.shared_activity:
            # We're joining
            if not self.get_shared():
                xocolors = XoColor(profile.get_color().to_string())
                share_icon = Icon(icon_name='zoom-neighborhood',
                                  xo_color=xocolors)
                self._joined_alert = NotifyAlert()
                self._joined_alert.props.icon = share_icon
                self._joined_alert.props.title = _('Please wait')
                self._joined_alert.props.msg = _('Starting connection...')
                self._joined_alert.connect('response', self._alert_cancel_cb)
                self.add_alert(self._joined_alert)

                self._label.set_label(_('Wait for the sharer to start.'))

                # Wait for joined signal
                self.connect("joined", self._joined_cb)

        self._setup_sharing()
class FractionBounceActivity(activity.Activity):
    def __init__(self, handle):
        ''' Initiate activity. '''
        super(FractionBounceActivity, self).__init__(handle)

        self.nick = profile.get_nick_name()
        if profile.get_color() is not None:
            self._colors = profile.get_color().to_string().split(',')
        else:
            self._colors = ['#A0FFA0', '#FF8080']

        self.max_participants = 4  # sharing
        self._playing = True

        self._setup_toolbars()
        self._setup_dispatch_table()
        canvas = self._setup_canvas()

        # Read any custom fractions from the project metadata
        if 'custom' in self.metadata:
            custom = self.metadata['custom']
        else:
            custom = None

        self._current_ball = 'soccerball'

        self._toolbar_was_expanded = False

        # Initialize the canvas
        self._bounce_window = Bounce(canvas, activity.get_bundle_path(), self)

        Gdk.Screen.get_default().connect('size-changed', self._configure_cb)

        # Restore any custom fractions
        if custom is not None:
            fractions = custom.split(',')
            for f in fractions:
                self._bounce_window.add_fraction(f)

        if self.shared_activity:
            # We're joining
            if not self.get_shared():
                xocolors = XoColor(profile.get_color().to_string())
                share_icon = Icon(icon_name='zoom-neighborhood',
                                  xo_color=xocolors)
                self._joined_alert = NotifyAlert()
                self._joined_alert.props.icon = share_icon
                self._joined_alert.props.title = _('Please wait')
                self._joined_alert.props.msg = _('Starting connection...')
                self._joined_alert.connect('response', self._alert_cancel_cb)
                self.add_alert(self._joined_alert)

                self._label.set_label(_('Wait for the sharer to start.'))

                # Wait for joined signal
                self.connect("joined", self._joined_cb)

        self._setup_sharing()

    def _configure_cb(self, event):
        if Gdk.Screen.width() < 1024:
            self._label.set_size_request(275, -1)
            self._label.set_label('')
            self._separator.set_expand(False)
        else:
            self._label.set_size_request(500, -1)
            self._separator.set_expand(True)

        self._bounce_window.configure_cb(event)
        if self._toolbar_expanded():
            self._bounce_window.bar.bump_bars('up')
            self._bounce_window.ball.ball.move_relative(
                (0, -style.GRID_CELL_SIZE))

    def _toolbar_expanded(self):
        if self._activity_button.is_expanded():
            return True
        elif self._custom_toolbar_button.is_expanded():
            return True
        return False

    def _update_graphics(self, widget):
        # We need to catch opening and closing of toolbars and ignore
        # switching between open toolbars.
        if self._toolbar_expanded():
            if not self._toolbar_was_expanded:
                self._bounce_window.bar.bump_bars('up')
                self._bounce_window.ball.ball.move_relative(
                    (0, -style.GRID_CELL_SIZE))
                self._toolbar_was_expanded = True
        else:
            if self._toolbar_was_expanded:
                self._bounce_window.bar.bump_bars('down')
                self._bounce_window.ball.ball.move_relative(
                    (0, style.GRID_CELL_SIZE))
                self._toolbar_was_expanded = False

    def _setup_toolbars(self):
        custom_toolbar = Gtk.Toolbar()
        toolbox = ToolbarBox()
        self._toolbar = toolbox.toolbar
        self._activity_button = ActivityToolbarButton(self)
        self._activity_button.connect('clicked', self._update_graphics)
        self._toolbar.insert(self._activity_button, 0)
        self._activity_button.show()

        self._custom_toolbar_button = ToolbarButton(label=_('Custom'),
                                                    page=custom_toolbar,
                                                    icon_name='view-source')
        self._custom_toolbar_button.connect('clicked', self._update_graphics)
        custom_toolbar.show()
        self._toolbar.insert(self._custom_toolbar_button, -1)
        self._custom_toolbar_button.show()

        self._load_standard_buttons(self._toolbar)

        self._separator = Gtk.SeparatorToolItem()
        self._separator.props.draw = False
        self._separator.set_expand(True)
        self._toolbar.insert(self._separator, -1)
        self._separator.show()

        stop_button = StopButton(self)
        stop_button.props.accelerator = _('<Ctrl>Q')
        self._toolbar.insert(stop_button, -1)
        stop_button.show()
        self.set_toolbar_box(toolbox)
        toolbox.show()

        self._load_custom_buttons(custom_toolbar)

    def _load_standard_buttons(self, toolbar):
        fraction_button = RadioToolButton(group=None)
        fraction_button.set_icon_name('fraction')
        fraction_button.set_tooltip(_('fractions'))
        fraction_button.connect('clicked', self._fraction_cb)
        toolbar.insert(fraction_button, -1)
        fraction_button.show()

        sector_button = RadioToolButton(group=fraction_button)
        sector_button.set_icon_name('sector')
        sector_button.set_tooltip(_('sectors'))
        sector_button.connect('clicked', self._sector_cb)
        toolbar.insert(sector_button, -1)
        sector_button.show()

        percent_button = RadioToolButton(group=fraction_button)
        percent_button.set_icon_name('percent')
        percent_button.set_tooltip(_('percents'))
        percent_button.connect('clicked', self._percent_cb)
        toolbar.insert(percent_button, -1)
        percent_button.show()

        self._player = Gtk.Image()
        self._player.set_from_pixbuf(
            svg_str_to_pixbuf(
                generate_xo_svg(scale=0.8, colors=['#282828', '#282828'])))
        self._player.set_tooltip_text(self.nick)
        toolitem = Gtk.ToolItem()
        toolitem.add(self._player)
        self._player.show()
        toolbar.insert(toolitem, -1)
        toolitem.show()

        self._label = Gtk.Label(_("Click the ball to start."))
        self._label.set_line_wrap(True)
        if Gdk.Screen.width() < 1024:
            self._label.set_size_request(275, -1)
        else:
            self._label.set_size_request(500, -1)
        self.toolitem = Gtk.ToolItem()
        self.toolitem.add(self._label)
        self._label.show()
        toolbar.insert(self.toolitem, -1)
        self.toolitem.show()

    def _load_custom_buttons(self, toolbar):
        self.numerator = Gtk.Entry()
        self.numerator.set_text('')
        self.numerator.set_tooltip_text(_('numerator'))
        self.numerator.set_width_chars(3)
        toolitem = Gtk.ToolItem()
        toolitem.add(self.numerator)
        self.numerator.show()
        toolbar.insert(toolitem, -1)
        toolitem.show()

        label = Gtk.Label('   /   ')
        toolitem = Gtk.ToolItem()
        toolitem.add(label)
        label.show()
        toolbar.insert(toolitem, -1)
        toolitem.show()

        self.denominator = Gtk.Entry()
        self.denominator.set_text('')
        self.denominator.set_tooltip_text(_('denominator'))
        self.denominator.set_width_chars(3)
        toolitem = Gtk.ToolItem()
        toolitem.add(self.denominator)
        self.denominator.show()
        toolbar.insert(toolitem, -1)
        toolitem.show()

        button = ToolButton('list-add')
        button.set_tooltip(_('add new fraction'))
        button.props.sensitive = True
        button.props.accelerator = 'Return'
        button.connect('clicked', self._add_fraction_cb)
        toolbar.insert(button, -1)
        button.show()

        separator = Gtk.SeparatorToolItem()
        separator.props.draw = False
        separator.set_expand(False)
        toolbar.insert(separator, -1)
        separator.show()

        button = ToolButton('soccerball')
        button.set_tooltip(_('choose a ball'))
        button.props.sensitive = True
        button.connect('clicked', self._button_palette_cb)
        toolbar.insert(button, -1)
        button.show()
        self._ball_palette = button.get_palette()
        button_grid = Gtk.Grid()
        row = 0
        for ball in BALLDICT.keys():
            if ball == 'custom':
                button = ToolButton('view-source')
            else:
                button = ToolButton(ball)
            button.connect('clicked', self._load_ball_cb, None, ball)
            eventbox = Gtk.EventBox()
            eventbox.connect('button_press_event', self._load_ball_cb, ball)
            label = Gtk.Label(BALLDICT[ball][0])
            eventbox.add(label)
            label.show()
            button_grid.attach(button, 0, row, 1, 1)
            button.show()
            button_grid.attach(eventbox, 1, row, 1, 1)
            eventbox.show()
            row += 1
        self._ball_palette.set_content(button_grid)
        button_grid.show()

        button = ToolButton('insert-picture')
        button.set_tooltip(_('choose a background'))
        button.props.sensitive = True
        button.connect('clicked', self._button_palette_cb)
        toolbar.insert(button, -1)
        button.show()
        self._bg_palette = button.get_palette()
        button_grid = Gtk.Grid()
        row = 0
        for bg in BGDICT.keys():
            if bg == 'custom':
                button = ToolButton('view-source')
            else:
                button = ToolButton(bg)
            button.connect('clicked', self._load_bg_cb, None, bg)
            eventbox = Gtk.EventBox()
            eventbox.connect('button_press_event', self._load_bg_cb, bg)
            label = Gtk.Label(BGDICT[bg][0])
            eventbox.add(label)
            label.show()
            button_grid.attach(button, 0, row, 1, 1)
            button.show()
            button_grid.attach(eventbox, 1, row, 1, 1)
            eventbox.show()
            row += 1
        self._bg_palette.set_content(button_grid)
        button_grid.show()

    def _button_palette_cb(self, button):
        palette = button.get_palette()
        if palette:
            if not palette.is_up():
                palette.popup(immediate=True, state=palette.SECONDARY)
            else:
                palette.popdown(immediate=True)

    def can_close(self):
        # Let everyone know we are leaving...
        if hasattr(self, '_bounce_window') and \
           self._bounce_window.we_are_sharing():
            self._playing = False
            self.send_event('l|%s' % (json_dump([self.nick])))
        return True

    def _setup_canvas(self):
        canvas = Gtk.DrawingArea()
        canvas.set_size_request(Gdk.Screen.width(), Gdk.Screen.height())
        self.set_canvas(canvas)
        canvas.show()
        return canvas

    def _load_bg_cb(self, widget, event, bg):
        if bg == 'custom':
            chooser(self, 'Image', self._new_background_from_journal)
        else:
            self._bounce_window.set_background(BGDICT[bg][1])

    def _load_ball_cb(self, widget, event, ball):
        if ball == 'custom':
            chooser(self, 'Image', self._new_ball_from_journal)
        else:
            self._bounce_window.ball.new_ball(
                os.path.join(activity.get_bundle_path(), 'images',
                             ball + '.svg'))
            self._bounce_window.set_background(BGDICT[BALLDICT[ball][1]][1])
        self._current_ball = ball

    def _reset_ball(self):
        ''' If we switch back from sector mode, we need to restore the ball '''
        if self._bounce_window.mode != 'sectors':
            return

        if self._current_ball == 'custom':  # TODO: Reload custom ball
            self._current_ball = 'soccerball'
        self._bounce_window.ball.new_ball(
            os.path.join(activity.get_bundle_path(), 'images',
                         self._current_ball + '.svg'))

    def _new_ball_from_journal(self, dsobject):
        ''' Load an image from the Journal. '''
        self._bounce_window.ball.new_ball_from_image(
            dsobject.file_path,
            os.path.join(activity.get_activity_root(), 'tmp', 'custom.png'))

    def _new_background_from_journal(self, dsobject):
        ''' Load an image from the Journal. '''
        self._bounce_window.new_background_from_image(None, dsobject=dsobject)

    def _fraction_cb(self, arg=None):
        ''' Set fraction mode '''
        self._reset_ball()
        self._bounce_window.mode = 'fractions'

    def _percent_cb(self, arg=None):
        ''' Set percent mode '''
        self._reset_ball()
        self._bounce_window.mode = 'percents'

    def _sector_cb(self, arg=None):
        ''' Set sector mode '''
        self._bounce_window.mode = 'sectors'

    def _add_fraction_cb(self, arg=None):
        ''' Read entries and add a fraction to the list '''
        try:
            numerator = int(self.numerator.get_text().strip())
        except ValueError:
            self.numerator.set_text('NAN')
            numerator = 0
        try:
            denominator = int(self.denominator.get_text().strip())
        except ValueError:
            self.denominator.set_text('NAN')
            denominator = 1
        if denominator == 0:
            self.denominator.set_text('ZDE')
        if numerator > denominator:
            numerator = 0
        if numerator > 0 and denominator > 1:
            fraction = '%d/%d' % (numerator, denominator)
            self._bounce_window.add_fraction(fraction)
            if 'custom' in self.metadata:  # Save to Journal
                self.metadata['custom'] = '%s,%s' % (self.metadata['custom'],
                                                     fraction)
            else:
                self.metadata['custom'] = fraction

            self.alert(
                _('New fraction'),
                _('Your fraction, %s, has been added to the program' %
                  (fraction)))

    def reset_label(self, label):
        ''' update the challenge label '''
        self._label.set_label(label)

    def alert(self, title, text=None):
        alert = NotifyAlert(timeout=5)
        alert.props.title = title
        alert.props.msg = text
        self.add_alert(alert)
        alert.connect('response', self._alert_cancel_cb)
        alert.show()

    def _alert_cancel_cb(self, alert, response_id):
        self.remove_alert(alert)

    # Collaboration-related methods

    def _setup_sharing(self):
        ''' Setup the Presence Service. '''
        self.pservice = presenceservice.get_instance()
        self.initiating = None  # sharing (True) or joining (False)

        owner = self.pservice.get_owner()
        self.owner = owner
        self._bounce_window.buddies.append(self.nick)
        self._player_colors = [self._colors]
        self._player_pixbufs = [
            svg_str_to_pixbuf(generate_xo_svg(scale=0.8, colors=self._colors))
        ]
        self._share = ''
        self.connect('shared', self._shared_cb)
        self.connect('joined', self._joined_cb)

    def _shared_cb(self, activity):
        ''' Either set up initial share...'''
        self._new_tube_common(True)

    def _joined_cb(self, activity):
        ''' ...or join an exisiting share. '''
        self._new_tube_common(False)

    def _new_tube_common(self, sharer):
        ''' Joining and sharing are mostly the same... '''
        if self.shared_activity is None:
            _logger.debug('Error: Failed to share or join activity ... \
                shared_activity is null in _shared_cb()')
            return

        self.initiating = sharer
        self.waiting_for_fraction = not sharer

        self.conn = self.shared_activity.telepathy_conn
        self.tubes_chan = self.shared_activity.telepathy_tubes_chan
        self.text_chan = self.shared_activity.telepathy_text_chan

        self.tubes_chan[telepathy.CHANNEL_TYPE_TUBES].connect_to_signal(
            'NewTube', self._new_tube_cb)

        if sharer:
            _logger.debug('This is my activity: making a tube...')
            id = self.tubes_chan[telepathy.CHANNEL_TYPE_TUBES].OfferDBusTube(
                SERVICE, {})

            self._label.set_label(_('Wait for others to join.'))
        else:
            _logger.debug('I am joining an activity: waiting for a tube...')
            self.tubes_chan[telepathy.CHANNEL_TYPE_TUBES].ListTubes(
                reply_handler=self._list_tubes_reply_cb,
                error_handler=self._list_tubes_error_cb)

        # display your XO on the toolbar
        self._player.set_from_pixbuf(self._player_pixbufs[0])

    def _list_tubes_reply_cb(self, tubes):
        ''' Reply to a list request. '''
        for tube_info in tubes:
            self._new_tube_cb(*tube_info)

    def _list_tubes_error_cb(self, e):
        ''' Log errors. '''
        _logger.debug('Error: ListTubes() failed: %s', e)

    def _new_tube_cb(self, id, initiator, type, service, params, state):
        ''' Create a new tube. '''
        _logger.debug(
            'Newtube: ID=%d initator=%d type=%d service=%s params=%r state=%d',
            id, initiator, type, service, params, state)

        if (type == telepathy.TUBE_TYPE_DBUS and service == SERVICE):
            if state == telepathy.TUBE_STATE_LOCAL_PENDING:
                self.tubes_chan[ \
                              telepathy.CHANNEL_TYPE_TUBES].AcceptDBusTube(id)

            tube_conn = TubeConnection(self.conn,
                self.tubes_chan[telepathy.CHANNEL_TYPE_TUBES], id, \
                group_iface=self.text_chan[telepathy.CHANNEL_INTERFACE_GROUP])

            self.chattube = ChatTube(tube_conn, self.initiating, \
                self.event_received_cb)

            # Let the sharer know a new joiner has arrived.
            if self.waiting_for_fraction:
                self.send_event('j|%s' %
                                (json_dump([self.nick, self._colors])))

    def _setup_dispatch_table(self):
        self._processing_methods = {
            'j': [self._new_joiner, 'new joiner'],
            'b': [self._buddy_list, 'buddy list'],
            'f': [self._receive_a_fraction, 'receive a fraction'],
            't': [self._take_a_turn, 'take a turn'],
            'l': [self._buddy_left, 'buddy left']
        }

    def event_received_cb(self, event_message):
        ''' Data from a tube has arrived. '''
        if len(event_message) == 0:
            return
        try:
            command, payload = event_message.split('|', 2)
        except ValueError:
            _logger.debug('Could not split event message %s', event_message)
            return
        _logger.debug('received an event %s|%s', command, payload)
        if self._playing:
            self._processing_methods[command][0](payload)

    def _buddy_left(self, payload):
        [nick] = json_load(payload)
        self._label.set_label(nick + ' ' + _('has left.'))
        if self.initiating:
            self._remove_player(nick)
            payload = json_dump(
                [self._bounce_window.buddies, self._player_colors])
            self.send_event('b|%s' % (payload))
            # Restart from sharer's turn
            self._bounce_window.its_my_turn()

    def _new_joiner(self, payload):
        ''' Someone has joined; sharer adds them to the buddy list. '''
        [nick, colors] = json_load(payload)
        self._label.set_label(nick + ' ' + _('has joined.'))
        if self.initiating:
            self._append_player(nick, colors)
            payload = json_dump(
                [self._bounce_window.buddies, self._player_colors])
            self.send_event('b|%s' % (payload))
            if self._bounce_window.count == 0:  # Haven't started yet...
                self._bounce_window.its_my_turn()

    def _remove_player(self, nick):
        if nick in self._bounce_window.buddies:
            i = self._bounce_window.buddies.index(nick)
            self._bounce_window.buddies.remove(nick)
            self._player_colors.remove(self._player_colors[i])
            self._player_pixbufs.remove(self._player_pixbufs[i])

    def _append_player(self, nick, colors):
        ''' Keep a list of players, their colors, and an XO pixbuf '''
        if not nick in self._bounce_window.buddies:
            _logger.debug('appending %s to the buddy list', nick)
            self._bounce_window.buddies.append(nick)
            self._player_colors.append([str(colors[0]), str(colors[1])])
            self._player_pixbufs.append(
                svg_str_to_pixbuf(
                    generate_xo_svg(scale=0.8,
                                    colors=self._player_colors[-1])))

    def _buddy_list(self, payload):
        '''Sharer sent the updated buddy list, so regenerate internal lists'''
        if not self.initiating:
            [buddies, colors] = json_load(payload)
            self._bounce_window.buddies = buddies[:]
            self._player_colors = colors[:]
            self._player_pixbufs = []
            for colors in self._player_colors:
                self._player_pixbufs.append(
                    svg_str_to_pixbuf(
                        generate_xo_svg(
                            scale=0.8, colors=[str(colors[0]),
                                               str(colors[1])])))

    def send_a_fraction(self, fraction):
        ''' Send a fraction to other players. '''
        payload = json_dump(fraction)
        self.send_event('f|%s' % (payload))

    def _receive_a_fraction(self, payload):
        ''' Receive a fraction from another player. '''
        fraction = json_load(payload)
        self._bounce_window.play_a_fraction(fraction)

    def _take_a_turn(self, nick):
        ''' If it is your turn, take it, otherwise, wait. '''
        if nick == self.nick:
            self._bounce_window.its_my_turn()
        else:
            self._bounce_window.its_their_turn(nick)

    def send_event(self, entry):
        ''' Send event through the tube. '''
        _logger.debug('sending event: %s', entry)
        if hasattr(self, 'chattube') and self.chattube is not None:
            self.chattube.SendText(entry)

    def set_player_on_toolbar(self, nick):
        ''' Display the XO icon of the player whose turn it is. '''
        self._player.set_from_pixbuf(
            self._player_pixbufs[self._bounce_window.buddies.index(nick)])
        self._player.set_tooltip_text(nick)
    def __init__(self, handle):
        ''' Initiate activity. '''
        super(FractionBounceActivity, self).__init__(handle)

        self.nick = profile.get_nick_name()
        if profile.get_color() is not None:
            self._colors = profile.get_color().to_string().split(',')
        else:
            self._colors = ['#A0FFA0', '#FF8080']

        self.max_participants = 4  # sharing
        self._playing = True

        self._setup_toolbars()
        canvas = self._setup_canvas()

        # Read any custom fractions from the project metadata
        if 'custom' in self.metadata:
            custom = self.metadata['custom']
        else:
            custom = None

        self._current_ball = 'soccerball'

        self._toolbar_was_expanded = False

        # Initialize the canvas
        self._bounce_window = Bounce(canvas, activity.get_bundle_path(), self)

        Gdk.Screen.get_default().connect('size-changed', self._configure_cb)

        # Restore any custom fractions
        if custom is not None:
            fractions = custom.split(',')
            for f in fractions:
                self._bounce_window.add_fraction(f)

        self._bounce_window.buddies.append(self.nick)
        self._player_colors = [self._colors]
        self._player_pixbufs = [
            svg_str_to_pixbuf(generate_xo_svg(scale=0.8, colors=self._colors))
        ]

        def on_activity_joined_cb(me):
            logging.debug('activity joined')
            self._player.set_from_pixbuf(self._player_pixbufs[0])

        self.connect('joined', on_activity_joined_cb)

        def on_activity_shared_cb(me):
            logging.debug('activity shared')
            self._player.set_from_pixbuf(self._player_pixbufs[0])
            self._label.set_label(_('Wait for others to join.'))

        self.connect('shared', on_activity_shared_cb)

        self._collab = CollabWrapper(self)

        if self.shared_activity:
            # We're joining
            if not self.get_shared():
                self._label.set_label(_('Wait for the sharer to start.'))

        actions = {
            'j': self._new_joiner,
            'b': self._buddy_list,
            'f': self._receive_a_fraction,
            't': self._take_a_turn,
            'l': self._buddy_left,
        }

        def on_message_cb(collab, buddy, msg):
            logging.debug('on_message_cb buddy %r msg %r' % (buddy, msg))
            if self._playing:
                actions[msg.get('action')](msg.get('data'))

        self._collab.connect('message', on_message_cb)

        def on_joined_cb(collab, msg):
            logging.debug('joined')
            self.send_event('j', [self.nick, self._colors])

        self._collab.connect('joined', on_joined_cb, 'joined')

        def on_buddy_joined_cb(collab, buddy, msg):
            logging.debug('on_buddy_joined_cb buddy %r' % (buddy.props.nick))

        self._collab.connect('buddy_joined', on_buddy_joined_cb,
                             'buddy_joined')

        def on_buddy_left_cb(collab, buddy, msg):
            logging.debug('on_buddy_left_cb buddy %r' % (buddy.props.nick))

        self._collab.connect('buddy_left', on_buddy_left_cb, 'buddy_left')

        self._collab.setup()
class FractionBounceActivity(activity.Activity):
    def __init__(self, handle):
        ''' Initiate activity. '''
        super(FractionBounceActivity, self).__init__(handle)

        self.nick = profile.get_nick_name()
        if profile.get_color() is not None:
            self._colors = profile.get_color().to_string().split(',')
        else:
            self._colors = ['#A0FFA0', '#FF8080']

        self.max_participants = 4  # sharing
        self._playing = True

        self._setup_toolbars()
        canvas = self._setup_canvas()

        # Read any custom fractions from the project metadata
        if 'custom' in self.metadata:
            custom = self.metadata['custom']
        else:
            custom = None

        self._current_ball = 'soccerball'

        self._toolbar_was_expanded = False

        # Initialize the canvas
        self._bounce_window = Bounce(canvas, activity.get_bundle_path(), self)

        Gdk.Screen.get_default().connect('size-changed', self._configure_cb)

        # Restore any custom fractions
        if custom is not None:
            fractions = custom.split(',')
            for f in fractions:
                self._bounce_window.add_fraction(f)

        self._bounce_window.buddies.append(self.nick)
        self._player_colors = [self._colors]
        self._player_pixbufs = [
            svg_str_to_pixbuf(generate_xo_svg(scale=0.8, colors=self._colors))
        ]

        def on_activity_joined_cb(me):
            logging.debug('activity joined')
            self._player.set_from_pixbuf(self._player_pixbufs[0])

        self.connect('joined', on_activity_joined_cb)

        def on_activity_shared_cb(me):
            logging.debug('activity shared')
            self._player.set_from_pixbuf(self._player_pixbufs[0])
            self._label.set_label(_('Wait for others to join.'))

        self.connect('shared', on_activity_shared_cb)

        self._collab = CollabWrapper(self)

        if self.shared_activity:
            # We're joining
            if not self.get_shared():
                self._label.set_label(_('Wait for the sharer to start.'))

        actions = {
            'j': self._new_joiner,
            'b': self._buddy_list,
            'f': self._receive_a_fraction,
            't': self._take_a_turn,
            'l': self._buddy_left,
        }

        def on_message_cb(collab, buddy, msg):
            logging.debug('on_message_cb buddy %r msg %r' % (buddy, msg))
            if self._playing:
                actions[msg.get('action')](msg.get('data'))

        self._collab.connect('message', on_message_cb)

        def on_joined_cb(collab, msg):
            logging.debug('joined')
            self.send_event('j', [self.nick, self._colors])

        self._collab.connect('joined', on_joined_cb, 'joined')

        def on_buddy_joined_cb(collab, buddy, msg):
            logging.debug('on_buddy_joined_cb buddy %r' % (buddy.props.nick))

        self._collab.connect('buddy_joined', on_buddy_joined_cb,
                             'buddy_joined')

        def on_buddy_left_cb(collab, buddy, msg):
            logging.debug('on_buddy_left_cb buddy %r' % (buddy.props.nick))

        self._collab.connect('buddy_left', on_buddy_left_cb, 'buddy_left')

        self._collab.setup()

    def set_data(self, blob):
        pass

    def get_data(self):
        return None

    def close(self, **kwargs):
        aplay.close()
        activity.Activity.close(self, **kwargs)

    def _configure_cb(self, event):
        if Gdk.Screen.width() < 1024:
            self._label.set_size_request(275, -1)
            self._label.set_label('')
            self._separator.set_expand(False)
        else:
            self._label.set_size_request(500, -1)
            self._separator.set_expand(True)

        self._bounce_window.configure_cb(event)
        if self._toolbar_expanded():
            self._bounce_window.bar.bump_bars('up')
            self._bounce_window.ball.ball.move_relative(
                (0, -style.GRID_CELL_SIZE))

    def _toolbar_expanded(self):
        if self._activity_button.is_expanded():
            return True
        elif self._custom_toolbar_button.is_expanded():
            return True
        return False

    def _update_graphics(self, widget):
        # We need to catch opening and closing of toolbars and ignore
        # switching between open toolbars.
        if self._toolbar_expanded():
            if not self._toolbar_was_expanded:
                self._bounce_window.bar.bump_bars('up')
                self._bounce_window.ball.ball.move_relative(
                    (0, -style.GRID_CELL_SIZE))
                self._toolbar_was_expanded = True
        else:
            if self._toolbar_was_expanded:
                self._bounce_window.bar.bump_bars('down')
                self._bounce_window.ball.ball.move_relative(
                    (0, style.GRID_CELL_SIZE))
                self._toolbar_was_expanded = False

    def _setup_toolbars(self):
        custom_toolbar = Gtk.Toolbar()
        toolbox = ToolbarBox()
        self._toolbar = toolbox.toolbar
        self._activity_button = ActivityToolbarButton(self)
        self._activity_button.connect('clicked', self._update_graphics)
        self._toolbar.insert(self._activity_button, 0)
        self._activity_button.show()

        self._custom_toolbar_button = ToolbarButton(label=_('Custom'),
                                                    page=custom_toolbar,
                                                    icon_name='view-source')
        self._custom_toolbar_button.connect('clicked', self._update_graphics)
        custom_toolbar.show()
        self._toolbar.insert(self._custom_toolbar_button, -1)
        self._custom_toolbar_button.show()

        self._load_standard_buttons(self._toolbar)

        self._separator = Gtk.SeparatorToolItem()
        self._separator.props.draw = False
        self._separator.set_expand(True)
        self._toolbar.insert(self._separator, -1)
        self._separator.show()

        stop_button = StopButton(self)
        stop_button.props.accelerator = _('<Ctrl>Q')
        self._toolbar.insert(stop_button, -1)
        stop_button.show()
        self.set_toolbar_box(toolbox)
        toolbox.show()

        self._load_custom_buttons(custom_toolbar)

    def _load_standard_buttons(self, toolbar):
        fraction_button = RadioToolButton(group=None)
        fraction_button.set_icon_name('fraction')
        fraction_button.set_tooltip(_('fractions'))
        fraction_button.connect('clicked', self._fraction_cb)
        toolbar.insert(fraction_button, -1)
        fraction_button.show()

        sector_button = RadioToolButton(group=fraction_button)
        sector_button.set_icon_name('sector')
        sector_button.set_tooltip(_('sectors'))
        sector_button.connect('clicked', self._sector_cb)
        toolbar.insert(sector_button, -1)
        sector_button.show()

        percent_button = RadioToolButton(group=fraction_button)
        percent_button.set_icon_name('percent')
        percent_button.set_tooltip(_('percents'))
        percent_button.connect('clicked', self._percent_cb)
        toolbar.insert(percent_button, -1)
        percent_button.show()

        self._player = Gtk.Image()
        self._player.set_from_pixbuf(
            svg_str_to_pixbuf(
                generate_xo_svg(scale=0.8, colors=['#282828', '#282828'])))
        self._player.set_tooltip_text(self.nick)
        toolitem = Gtk.ToolItem()
        toolitem.add(self._player)
        self._player.show()
        toolbar.insert(toolitem, -1)
        toolitem.show()

        self._label = Gtk.Label(_("Click the ball to start."))
        self._label.set_line_wrap(True)
        if Gdk.Screen.width() < 1024:
            self._label.set_size_request(275, -1)
        else:
            self._label.set_size_request(500, -1)
        self.toolitem = Gtk.ToolItem()
        self.toolitem.add(self._label)
        self._label.show()
        toolbar.insert(self.toolitem, -1)
        self.toolitem.show()

    def _load_custom_buttons(self, toolbar):
        self.numerator = Gtk.Entry()
        self.numerator.set_text('')
        self.numerator.set_tooltip_text(_('numerator'))
        self.numerator.set_width_chars(3)
        toolitem = Gtk.ToolItem()
        toolitem.add(self.numerator)
        self.numerator.show()
        toolbar.insert(toolitem, -1)
        toolitem.show()

        label = Gtk.Label('   /   ')
        toolitem = Gtk.ToolItem()
        toolitem.add(label)
        label.show()
        toolbar.insert(toolitem, -1)
        toolitem.show()

        self.denominator = Gtk.Entry()
        self.denominator.set_text('')
        self.denominator.set_tooltip_text(_('denominator'))
        self.denominator.set_width_chars(3)
        toolitem = Gtk.ToolItem()
        toolitem.add(self.denominator)
        self.denominator.show()
        toolbar.insert(toolitem, -1)
        toolitem.show()

        button = ToolButton('list-add')
        button.set_tooltip(_('add new fraction'))
        button.props.sensitive = True
        button.props.accelerator = 'Return'
        button.connect('clicked', self._add_fraction_cb)
        toolbar.insert(button, -1)
        button.show()

        separator = Gtk.SeparatorToolItem()
        separator.props.draw = False
        separator.set_expand(False)
        toolbar.insert(separator, -1)
        separator.show()

        button = ToolButton('soccerball')
        button.set_tooltip(_('choose a ball'))
        button.props.sensitive = True
        button.connect('clicked', self._button_palette_cb)
        toolbar.insert(button, -1)
        button.show()
        self._ball_palette = button.get_palette()
        button_grid = Gtk.Grid()
        row = 0
        for ball in BALLDICT.keys():
            if ball == 'custom':
                button = ToolButton('view-source')
            else:
                button = ToolButton(ball)
            button.connect('clicked', self._load_ball_cb, None, ball)
            eventbox = Gtk.EventBox()
            eventbox.connect('button_press_event', self._load_ball_cb, ball)
            label = Gtk.Label(BALLDICT[ball][0])
            eventbox.add(label)
            label.show()
            button_grid.attach(button, 0, row, 1, 1)
            button.show()
            button_grid.attach(eventbox, 1, row, 1, 1)
            eventbox.show()
            row += 1
        self._ball_palette.set_content(button_grid)
        button_grid.show()

        button = ToolButton('insert-picture')
        button.set_tooltip(_('choose a background'))
        button.props.sensitive = True
        button.connect('clicked', self._button_palette_cb)
        toolbar.insert(button, -1)
        button.show()
        self._bg_palette = button.get_palette()
        button_grid = Gtk.Grid()
        row = 0
        for bg in BGDICT.keys():
            if bg == 'custom':
                button = ToolButton('view-source')
            else:
                button = ToolButton(bg)
            button.connect('clicked', self._load_bg_cb, None, bg)
            eventbox = Gtk.EventBox()
            eventbox.connect('button_press_event', self._load_bg_cb, bg)
            label = Gtk.Label(BGDICT[bg][0])
            eventbox.add(label)
            label.show()
            button_grid.attach(button, 0, row, 1, 1)
            button.show()
            button_grid.attach(eventbox, 1, row, 1, 1)
            eventbox.show()
            row += 1
        self._bg_palette.set_content(button_grid)
        button_grid.show()

    def _button_palette_cb(self, button):
        palette = button.get_palette()
        if palette:
            if not palette.is_up():
                palette.popup(immediate=True)
            else:
                palette.popdown(immediate=True)

    def can_close(self):
        # Let everyone know we are leaving...
        if hasattr(self, '_bounce_window') and \
           self._bounce_window.we_are_sharing():
            self._playing = False
            self.send_event('l', self.nick)
        return True

    def _setup_canvas(self):
        canvas = Gtk.DrawingArea()
        canvas.set_size_request(Gdk.Screen.width(), Gdk.Screen.height())
        self.set_canvas(canvas)
        canvas.show()
        return canvas

    def _load_bg_cb(self, widget, event, bg):
        if bg == 'custom':
            chooser(self, 'Image', self._new_background_from_journal)
        else:
            self._bounce_window.set_background(BGDICT[bg][1])

    def _load_ball_cb(self, widget, event, ball):
        if ball == 'custom':
            chooser(self, 'Image', self._new_ball_from_journal)
        else:
            self._bounce_window.ball.new_ball(
                os.path.join(activity.get_bundle_path(), 'images',
                             ball + '.svg'))
            self._bounce_window.set_background(BGDICT[BALLDICT[ball][1]][1])
        self._current_ball = ball

    def _reset_ball(self):
        ''' If we switch back from sector mode, we need to restore the ball '''
        if self._bounce_window.mode != 'sectors':
            return

        if self._current_ball == 'custom':  # TODO: Reload custom ball
            self._current_ball = 'soccerball'
        self._bounce_window.ball.new_ball(
            os.path.join(activity.get_bundle_path(), 'images',
                         self._current_ball + '.svg'))

    def _new_ball_from_journal(self, dsobject):
        ''' Load an image from the Journal. '''
        self._bounce_window.ball.new_ball_from_image(
            dsobject.file_path,
            os.path.join(activity.get_activity_root(), 'tmp', 'custom.png'))

    def _new_background_from_journal(self, dsobject):
        ''' Load an image from the Journal. '''
        self._bounce_window.new_background_from_image(None, dsobject=dsobject)

    def _fraction_cb(self, arg=None):
        ''' Set fraction mode '''
        self._reset_ball()
        self._bounce_window.mode = 'fractions'

    def _percent_cb(self, arg=None):
        ''' Set percent mode '''
        self._reset_ball()
        self._bounce_window.mode = 'percents'

    def _sector_cb(self, arg=None):
        ''' Set sector mode '''
        self._bounce_window.mode = 'sectors'

    def _add_fraction_cb(self, arg=None):
        ''' Read entries and add a fraction to the list '''
        try:
            numerator = int(self.numerator.get_text().strip())
        except ValueError:
            self.numerator.set_text('NAN')
            numerator = 0
        try:
            denominator = int(self.denominator.get_text().strip())
        except ValueError:
            self.denominator.set_text('NAN')
            denominator = 1
        if denominator == 0:
            self.denominator.set_text('ZDE')
        if numerator > denominator:
            numerator = 0
        if numerator > 0 and denominator > 1:
            fraction = '%d/%d' % (numerator, denominator)
            self._bounce_window.add_fraction(fraction)
            if 'custom' in self.metadata:  # Save to Journal
                self.metadata['custom'] = '%s,%s' % (self.metadata['custom'],
                                                     fraction)
            else:
                self.metadata['custom'] = fraction

            self.alert(
                _('New fraction'),
                _('Your fraction, %s, has been added to the program' %
                  (fraction)))

    def reset_label(self, label):
        ''' update the challenge label '''
        self._label.set_label(label)

    def alert(self, title, text=None):
        alert = NotifyAlert(timeout=5)
        alert.props.title = title
        alert.props.msg = text
        self.add_alert(alert)
        alert.connect('response', self._alert_cancel_cb)
        alert.show()

    def _alert_cancel_cb(self, alert, response_id):
        self.remove_alert(alert)

    # Collaboration-related methods

    def _buddy_left(self, nick):
        self._label.set_label(nick + ' ' + _('has left.'))
        if self._collab.props.leader:
            self._remove_player(nick)
            self.send_event('b',
                            [self._bounce_window.buddies, self._player_colors])
            # Restart from sharer's turn
            self._bounce_window.its_my_turn()

    def _new_joiner(self, payload):
        ''' Someone has joined; sharer adds them to the buddy list. '''
        [nick, colors] = payload
        self._label.set_label(nick + ' ' + _('has joined.'))
        if self._collab.props.leader:
            self._append_player(nick, colors)
            self.send_event('b',
                            [self._bounce_window.buddies, self._player_colors])
            if self._bounce_window.count == 0:  # Haven't started yet...
                self._bounce_window.its_my_turn()

    def _remove_player(self, nick):
        if nick in self._bounce_window.buddies:
            i = self._bounce_window.buddies.index(nick)
            self._bounce_window.buddies.remove(nick)
            self._player_colors.remove(self._player_colors[i])
            self._player_pixbufs.remove(self._player_pixbufs[i])

    def _append_player(self, nick, colors):
        ''' Keep a list of players, their colors, and an XO pixbuf '''
        if nick not in self._bounce_window.buddies:
            _logger.debug('appending %s to the buddy list', nick)
            self._bounce_window.buddies.append(nick)
            self._player_colors.append([str(colors[0]), str(colors[1])])
            self._player_pixbufs.append(
                svg_str_to_pixbuf(
                    generate_xo_svg(scale=0.8,
                                    colors=self._player_colors[-1])))

    def _buddy_list(self, payload):
        '''Sharer sent the updated buddy list, so regenerate internal lists'''
        if not self._collab.props.leader:
            [buddies, colors] = payload
            self._bounce_window.buddies = buddies[:]
            self._player_colors = colors[:]
            self._player_pixbufs = []
            for colors in self._player_colors:
                self._player_pixbufs.append(
                    svg_str_to_pixbuf(
                        generate_xo_svg(
                            scale=0.8, colors=[str(colors[0]),
                                               str(colors[1])])))

    def send_a_fraction(self, fraction):
        ''' Send a fraction to other players. '''
        self.send_event('f', fraction)

    def _receive_a_fraction(self, payload):
        ''' Receive a fraction from another player. '''
        self._bounce_window.play_a_fraction(payload)

    def _take_a_turn(self, nick):
        ''' If it is your turn, take it, otherwise, wait. '''
        if nick == self.nick:  # TODO: disambiguate
            self._bounce_window.its_my_turn()
        else:
            self._bounce_window.its_their_turn(nick)

    def send_event(self, action, data):
        ''' Send event through the tube. '''
        _logger.debug('send_event action=%r data=%r' % (action, data))
        self._collab.post({'action': action, 'data': data})

    def set_player_on_toolbar(self, nick):
        ''' Display the XO icon of the player whose turn it is. '''
        self._player.set_from_pixbuf(
            self._player_pixbufs[self._bounce_window.buddies.index(nick)])
        self._player.set_tooltip_text(nick)
예제 #7
0
class FractionBounceActivity(activity.Activity):

    def __init__(self, handle):
        ''' Initiate activity. '''
        super(FractionBounceActivity, self).__init__(handle)

        self.nick = profile.get_nick_name()
        if profile.get_color() is not None:
            self.colors = profile.get_color().to_string().split(',')
        else:
            self.colors = ['#A0FFA0', '#FF8080']

        self.add_events(gtk.gdk.VISIBILITY_NOTIFY_MASK)
        self.connect('visibility-notify-event', self.__visibility_notify_cb)

        self.max_participants = 4  # sharing

        self._setup_toolbars()
        self._setup_dispatch_table()
        canvas = self._setup_canvas()

        # Read any custom fractions from the project metadata
        if 'custom' in self.metadata:
            custom = self.metadata['custom']
        else:
            custom = None

        # Initialize the canvas
        self.bounce_window = Bounce(canvas, activity.get_bundle_path(), self)

        # Restore any custom fractions
        if custom is not None:
            fractions = custom.split(',')
            for f in fractions:
                self.bounce_window.add_fraction(f)

        self._setup_presence_service()

    def _setup_toolbars(self):
        ''' Add buttons to toolbars '''
        custom_toolbar = gtk.Toolbar()
        if HAS_TOOLBARBOX:
            toolbox = ToolbarBox()
            self.toolbar = toolbox.toolbar
            activity_button = ActivityToolbarButton(self)
            self.toolbar.insert(activity_button, 0)
            activity_button.show()

            custom_toolbar_button = ToolbarButton(
                label=_('Custom'),
                page=custom_toolbar,
                icon_name='view-source')
            custom_toolbar.show()
            self.toolbar.insert(custom_toolbar_button, -1)
            custom_toolbar_button.show()

            self._load_standard_buttons(self.toolbar)
            separator_factory(self.toolbar, expand=True, visible=False)

            stop_button = StopButton(self)
            stop_button.props.accelerator = _('<Ctrl>Q')
            self.toolbar.insert(stop_button, -1)
            stop_button.show()

            self.set_toolbox(toolbox)
            toolbox.show()
        else:
            toolbox = activity.ActivityToolbox(self)
            self.set_toolbox(toolbox)
            self.toolbar = gtk.Toolbar()
            toolbox.add_toolbar(_('Project'), self.toolbar)
            toolbox.add_toolbar(_('Custom'), custom_toolbar)
            self._load_standard_buttons(self.toolbar)

        self._load_custom_buttons(custom_toolbar)

    def _load_standard_buttons(self, toolbar):
        ''' Load buttons onto whichever toolbar we are using '''
        self.fraction_button = radio_factory('fraction', toolbar,
                                             self._fraction_cb,
                                             tooltip=_('fractions'),
                                             group=None)
        self.percent_button = radio_factory('percent', toolbar,
                                            self._percent_cb,
                                            tooltip=_('percents'),
                                            group=self.fraction_button)
        self.player = image_factory(
            svg_str_to_pixbuf(generate_xo_svg(scale=0.8,
                                          colors=['#282828', '#000000'])),
            toolbar, tooltip=self.nick)
        separator_factory(toolbar, expand=False, visible=True)
        self.challenge = label_factory(toolbar, _("Click the ball to start."))

    def _load_custom_buttons(self, toolbar):
        ''' Entry fields and buttons for adding custom fractions '''
        self.numerator = entry_factory('', toolbar, tooltip=_('numerator'))
        label_factory(toolbar, '   /   ')
        self.denominator = entry_factory('', toolbar,
                                          tooltip=_('denominator'))
        separator_factory(toolbar, expand=False, visible=False)
        self.enter_button = button_factory('list-add', toolbar,
                                           self._add_fraction_cb,
                                           tooltip=_('add new fraction'),
                                           accelerator='Return')
        separator_factory(toolbar, expand=False, visible=True)
        self._ball_selector = combo_factory(BALLS, toolbar, self._combo_cb,
                                            default=_('basketball'),
                                            tooltip=_('choose a ball'))

    def _setup_canvas(self):
        ''' Create a canvas '''
        canvas = gtk.DrawingArea()
        canvas.set_size_request(gtk.gdk.screen_width(),
                                gtk.gdk.screen_height())
        self.set_canvas(canvas)
        canvas.show()
        self.show_all()
        return canvas

    def _combo_cb(self, arg=None):
        ''' Load a new ball based on the selector value. '''
        if not hasattr(self, '_ball_selector'):
            return
        if BALLS[self._ball_selector.get_active()] == _('basketball'):
            self.bounce_window.ball.new_ball(os.path.join(
                    activity.get_bundle_path(), 'basketball.svg'))
        elif BALLS[self._ball_selector.get_active()] == _('soccer ball'):
            self.bounce_window.ball.new_ball(os.path.join(
                    activity.get_bundle_path(), 'soccer.svg'))
        else:
            chooser(self, '', self._new_ball_from_journal)

    def _new_ball_from_journal(self, dsobject):
        ''' Load an image from the Journal. '''
        self.bounce_window.ball.new_ball_from_image(dsobject.file_path)

    def _fraction_cb(self, arg=None):
        ''' Set fraction mode '''
        self.bounce_window.mode = 'fractions'

    def _percent_cb(self, arg=None):
        ''' Set percent mode '''
        self.bounce_window.mode = 'percents'

    def _add_fraction_cb(self, arg=None):
        ''' Read entries and add a fraction to the list '''
        try:
            numerator = int(self.numerator.get_text().strip())
        except ValueError:
            self.numerator.set_text('NAN')
            numerator = 0
        try:
            denominator = int(self.denominator.get_text().strip())
        except ValueError:
            self.denominator.set_text('NAN')
            denominator = 1
        if denominator == 0:
            self.denominator.set_text('ZDE')
        if numerator > denominator:
            numerator = 0
        if numerator > 0 and denominator > 1:
            self.bounce_window.add_fraction('%d/%d' % (numerator, denominator))
            if 'custom' in self.metadata:  # Save to Journal
                self.metadata['custom'] = '%s,%d/%d' % (
                    self.metadata['custom'], numerator, denominator)
            else:
                self.metadata['custom'] = '%d/%d' % (numerator, denominator)

    def reset_label(self, fraction):
        ''' update the challenge label '''
        self.challenge.set_label(_('Bounce the ball to a position \
%(fraction)s of the way from the left side of the bar.') \
                                     % {'fraction': fraction})

    def __visibility_notify_cb(self, window, event):
        ''' Callback method for when the activity's visibility changes. '''
        # _logger.debug('%s', str(event.state))
        return

        '''
        # Awaiting resolution of #2570
        if event.state == gtk.gdk.VISIBILITY_FULLY_OBSCURED:
            _logger.debug('pause it')
            self.bounce_window.pause()
        elif event.state in \
            [gtk.gdk.VISIBILITY_UNOBSCURED, gtk.gdk.VISIBILITY_PARTIAL]:
            if not self.bounce_window.paused:
                _logger.debug('unpause it')
                self.challenge.set_label(_('Click the ball to continue'))
        '''

    # Collaboration-related methods

    def _setup_presence_service(self):
        ''' Setup the Presence Service. '''
        self.pservice = presenceservice.get_instance()
        self.initiating = None  # sharing (True) or joining (False)

        owner = self.pservice.get_owner()
        self.owner = owner
        self.bounce_window.buddies.append(self.nick)
        self._player_colors = [self.colors]
        self._player_pixbuf = [svg_str_to_pixbuf(
                generate_xo_svg(scale=0.8, colors=self.colors))]
        self._share = ''
        self.connect('shared', self._shared_cb)
        self.connect('joined', self._joined_cb)

    def _shared_cb(self, activity):
        ''' Either set up initial share...'''
        self._new_tube_common(True)

    def _joined_cb(self, activity):
        ''' ...or join an exisiting share. '''
        self._new_tube_common(False)

    def _new_tube_common(self, sharer):
        ''' Joining and sharing are mostly the same... '''
        if self._shared_activity is None:
            _logger.debug('Error: Failed to share or join activity ... \
                _shared_activity is null in _shared_cb()')
            return

        self.initiating = sharer
        self.waiting_for_fraction = not sharer

        self.conn = self._shared_activity.telepathy_conn
        self.tubes_chan = self._shared_activity.telepathy_tubes_chan
        self.text_chan = self._shared_activity.telepathy_text_chan

        self.tubes_chan[telepathy.CHANNEL_TYPE_TUBES].connect_to_signal(
            'NewTube', self._new_tube_cb)

        if sharer:
            _logger.debug('This is my activity: making a tube...')
            id = self.tubes_chan[telepathy.CHANNEL_TYPE_TUBES].OfferDBusTube(
                SERVICE, {})

            self.challenge.set_label(_('Wait for others to join.'))
        else:
            _logger.debug('I am joining an activity: waiting for a tube...')
            self.tubes_chan[telepathy.CHANNEL_TYPE_TUBES].ListTubes(
                reply_handler=self._list_tubes_reply_cb,
                error_handler=self._list_tubes_error_cb)

            self.challenge.set_label(_('Wait for the sharer to start.'))

        # display your XO on the toolbar
        self.player.set_from_pixbuf(self._player_pixbuf[0])
        self.toolbar.show_all()

    def _list_tubes_reply_cb(self, tubes):
        ''' Reply to a list request. '''
        for tube_info in tubes:
            self._new_tube_cb(*tube_info)

    def _list_tubes_error_cb(self, e):
        ''' Log errors. '''
        _logger.debug('Error: ListTubes() failed: %s', e)

    def _new_tube_cb(self, id, initiator, type, service, params, state):
        ''' Create a new tube. '''
        _logger.debug(
            'Newtube: ID=%d initator=%d type=%d service=%s params=%r state=%d',
            id, initiator, type, service, params, state)

        if (type == telepathy.TUBE_TYPE_DBUS and service == SERVICE):
            if state == telepathy.TUBE_STATE_LOCAL_PENDING:
                self.tubes_chan[ \
                              telepathy.CHANNEL_TYPE_TUBES].AcceptDBusTube(id)

            tube_conn = TubeConnection(self.conn,
                self.tubes_chan[telepathy.CHANNEL_TYPE_TUBES], id, \
                group_iface=self.text_chan[telepathy.CHANNEL_INTERFACE_GROUP])

            self.chattube = ChatTube(tube_conn, self.initiating, \
                self.event_received_cb)

            # Let the sharer know a new joiner has arrived.
            if self.waiting_for_fraction:
                self.send_event('j|%s' % (json_dump([self.nick,
                                                     self.colors])))

    def _setup_dispatch_table(self):
        self._processing_methods = {
            'j': [self._new_joiner, 'new joiner'],
            'b': [self._buddy_list, 'buddy list'],
            'f': [self._receive_a_fraction, 'receive a fraction'],
            't': [self._take_a_turn, 'take a turn'],
            }

    def event_received_cb(self, event_message):
        ''' Data from a tube has arrived. '''
        if len(event_message) == 0:
            return
        try:
            command, payload = event_message.split('|', 2)
        except ValueError:
            _logger.debug('Could not split event message %s', event_message)
            return
        # _logger.debug('received an event %s|%s', command, payload)
        self._processing_methods[command][0](payload)

    def _new_joiner(self, payload):
        ''' Someone has joined; sharer adds them to the buddy list. '''
        [nick, colors] = json_load(payload)
        self.challenge.set_label(nick + ' ' + _('has joined.'))
        self._append_player(nick, colors)
        if self.initiating:
            payload = json_dump([self.bounce_window.buddies,
                                 self._player_colors])
            self.send_event('b|%s' % (payload))
            if self.bounce_window.count == 0:  # Haven't started yet...
                self.bounce_window.its_my_turn()

    def _append_player(self, nick, colors):
        ''' Keep a list of players, their colors, and an XO pixbuf '''
        if not nick in self.bounce_window.buddies:
            # _logger.debug('appending %s to the buddy list', nick)
            self.bounce_window.buddies.append(nick)
            self._player_colors.append(colors)
            self._player_pixbuf.append(svg_str_to_pixbuf(
                generate_xo_svg(scale=0.8, colors=colors)))

    def _buddy_list(self, payload):
        ''' Sharer sent the updated buddy list. '''
        [buddies, colors] = json_load(payload)
        for i, nick in enumerate(buddies):
            self._append_player(nick, colors[i])

    def send_a_fraction(self, fraction):
        ''' Send a fraction to other players. '''
        payload = json_dump(fraction)
        self.send_event('f|%s' % (payload))

    def _receive_a_fraction(self, payload):
        ''' Receive a fraction from another player. '''
        fraction = json_load(payload)
        self.bounce_window.play_a_fraction(fraction)

    def _take_a_turn(self, nick):
        ''' If it is your turn, take it, otherwise, wait. '''
        if nick == self.nick:
            self.bounce_window.its_my_turn()
        else:
            self.bounce_window.its_their_turn(nick)

    def send_event(self, entry):
        ''' Send event through the tube. '''
        # _logger.debug('sending event: %s', entry)
        if hasattr(self, 'chattube') and self.chattube is not None:
            self.chattube.SendText(entry)

    def set_player_on_toolbar(self, nick):
        ''' Display the XO icon of the player whose turn it is. '''
        self.player.set_from_pixbuf(self._player_pixbuf[
                self.bounce_window.buddies.index(nick)])
        self.player.set_tooltip_text(nick)
class FractionBounceActivity(activity.Activity):

    def __init__(self, handle):
        ''' Initiate activity. '''
        super(FractionBounceActivity, self).__init__(handle)

        self.nick = profile.get_nick_name()
        if profile.get_color() is not None:
            self._colors = profile.get_color().to_string().split(',')
        else:
            self._colors = ['#A0FFA0', '#FF8080']

        self.max_participants = 4  # sharing
        self._playing = True

        self._setup_toolbars()
        self._setup_dispatch_table()
        canvas = self._setup_canvas()

        # Read any custom fractions from the project metadata
        if 'custom' in self.metadata:
            custom = self.metadata['custom']
        else:
            custom = None

        self._current_ball = 'soccerball'

        self._toolbar_was_expanded = False

        # Initialize the canvas
        self._bounce_window = Bounce(canvas, activity.get_bundle_path(), self)

        Gdk.Screen.get_default().connect('size-changed', self._configure_cb)

        # Restore any custom fractions
        if custom is not None:
            fractions = custom.split(',')
            for f in fractions:
                self._bounce_window.add_fraction(f)

        if self.shared_activity:
            # We're joining
            if not self.get_shared():
                xocolors = XoColor(profile.get_color().to_string())
                share_icon = Icon(icon_name='zoom-neighborhood',
                                  xo_color=xocolors)
                self._joined_alert = NotifyAlert()
                self._joined_alert.props.icon = share_icon
                self._joined_alert.props.title = _('Please wait')
                self._joined_alert.props.msg = _('Starting connection...')
                self._joined_alert.connect('response', self._alert_cancel_cb)
                self.add_alert(self._joined_alert)

                self._label.set_label(_('Wait for the sharer to start.'))

                # Wait for joined signal
                self.connect("joined", self._joined_cb)

        self._setup_sharing()

    def _configure_cb(self, event):
        if Gdk.Screen.width() < 1024:
            self._label.set_size_request(275, -1)
            self._label.set_label('')
            self._separator.set_expand(False)
        else:
            self._label.set_size_request(500, -1)
            self._separator.set_expand(True)

        self._bounce_window.configure_cb(event)
        if self._toolbar_expanded():
            self._bounce_window.bar.bump_bars('up')
            self._bounce_window.ball.ball.move_relative(
                (0, -style.GRID_CELL_SIZE))

    def _toolbar_expanded(self):
        if self._activity_button.is_expanded():
            return True
        elif self._custom_toolbar_button.is_expanded():
            return True
        return False

    def _update_graphics(self, widget):
        # We need to catch opening and closing of toolbars and ignore
        # switching between open toolbars.
        if self._toolbar_expanded():
            if not self._toolbar_was_expanded:
                self._bounce_window.bar.bump_bars('up')
                self._bounce_window.ball.ball.move_relative(
                    (0, -style.GRID_CELL_SIZE))
                self._toolbar_was_expanded = True
        else:
            if self._toolbar_was_expanded:
                self._bounce_window.bar.bump_bars('down')
                self._bounce_window.ball.ball.move_relative(
                    (0, style.GRID_CELL_SIZE))
                self._toolbar_was_expanded = False

    def _setup_toolbars(self):
        custom_toolbar = Gtk.Toolbar()
        toolbox = ToolbarBox()
        self._toolbar = toolbox.toolbar
        self._activity_button = ActivityToolbarButton(self)
        self._activity_button.connect('clicked', self._update_graphics)
        self._toolbar.insert(self._activity_button, 0)
        self._activity_button.show()

        self._custom_toolbar_button = ToolbarButton(
            label=_('Custom'),
            page=custom_toolbar,
            icon_name='view-source')
        self._custom_toolbar_button.connect('clicked', self._update_graphics)
        custom_toolbar.show()
        self._toolbar.insert(self._custom_toolbar_button, -1)
        self._custom_toolbar_button.show()

        self._load_standard_buttons(self._toolbar)

        self._separator = Gtk.SeparatorToolItem()
        self._separator.props.draw = False
        self._separator.set_expand(True)
        self._toolbar.insert(self._separator, -1)
        self._separator.show()

        stop_button = StopButton(self)
        stop_button.props.accelerator = _('<Ctrl>Q')
        self._toolbar.insert(stop_button, -1)
        stop_button.show()
        self.set_toolbar_box(toolbox)
        toolbox.show()

        self._load_custom_buttons(custom_toolbar)

    def _load_standard_buttons(self, toolbar):
        fraction_button = RadioToolButton(group=None)
        fraction_button.set_icon_name('fraction')
        fraction_button.set_tooltip(_('fractions'))
        fraction_button.connect('clicked', self._fraction_cb)
        toolbar.insert(fraction_button, -1)
        fraction_button.show()

        sector_button = RadioToolButton(group=fraction_button)
        sector_button.set_icon_name('sector')
        sector_button.set_tooltip(_('sectors'))
        sector_button.connect('clicked', self._sector_cb)
        toolbar.insert(sector_button, -1)
        sector_button.show()

        percent_button = RadioToolButton(group=fraction_button)
        percent_button.set_icon_name('percent')
        percent_button.set_tooltip(_('percents'))
        percent_button.connect('clicked', self._percent_cb)
        toolbar.insert(percent_button, -1)
        percent_button.show()

        self._player = Gtk.Image()
        self._player.set_from_pixbuf(svg_str_to_pixbuf(
            generate_xo_svg(scale=0.8, colors=['#282828', '#282828'])))
        self._player.set_tooltip_text(self.nick)
        toolitem = Gtk.ToolItem()
        toolitem.add(self._player)
        self._player.show()
        toolbar.insert(toolitem, -1)
        toolitem.show()

        self._label = Gtk.Label(_("Click the ball to start."))
        self._label.set_line_wrap(True)
        if Gdk.Screen.width() < 1024:
            self._label.set_size_request(275, -1)
        else:
            self._label.set_size_request(500, -1)
        self.toolitem = Gtk.ToolItem()
        self.toolitem.add(self._label)
        self._label.show()
        toolbar.insert(self.toolitem, -1)
        self.toolitem.show()

    def _load_custom_buttons(self, toolbar):
        self.numerator = Gtk.Entry()
        self.numerator.set_text('')
        self.numerator.set_tooltip_text(_('numerator'))
        self.numerator.set_width_chars(3)
        toolitem = Gtk.ToolItem()
        toolitem.add(self.numerator)
        self.numerator.show()
        toolbar.insert(toolitem, -1)
        toolitem.show()

        label = Gtk.Label('   /   ')
        toolitem = Gtk.ToolItem()
        toolitem.add(label)
        label.show()
        toolbar.insert(toolitem, -1)
        toolitem.show()

        self.denominator = Gtk.Entry()
        self.denominator.set_text('')
        self.denominator.set_tooltip_text(_('denominator'))
        self.denominator.set_width_chars(3)
        toolitem = Gtk.ToolItem()
        toolitem.add(self.denominator)
        self.denominator.show()
        toolbar.insert(toolitem, -1)
        toolitem.show()

        button = ToolButton('list-add')
        button.set_tooltip(_('add new fraction'))
        button.props.sensitive = True
        button.props.accelerator = 'Return'
        button.connect('clicked', self._add_fraction_cb)
        toolbar.insert(button, -1)
        button.show()

        separator = Gtk.SeparatorToolItem()
        separator.props.draw = False
        separator.set_expand(False)
        toolbar.insert(separator, -1)
        separator.show()

        button = ToolButton('soccerball')
        button.set_tooltip(_('choose a ball'))
        button.props.sensitive = True
        button.connect('clicked', self._button_palette_cb)
        toolbar.insert(button, -1)
        button.show()
        self._ball_palette = button.get_palette()
        button_grid = Gtk.Grid()
        row = 0
        for ball in BALLDICT.keys():
            if ball == 'custom':
                button = ToolButton('view-source')
            else:
                button = ToolButton(ball)
            button.connect('clicked', self._load_ball_cb, None, ball)
            eventbox = Gtk.EventBox()
            eventbox.connect('button_press_event', self._load_ball_cb,
                             ball)
            label = Gtk.Label(BALLDICT[ball][0])
            eventbox.add(label)
            label.show()
            button_grid.attach(button, 0, row, 1, 1)
            button.show()
            button_grid.attach(eventbox, 1, row, 1, 1)
            eventbox.show()
            row += 1
        self._ball_palette.set_content(button_grid)
        button_grid.show()

        button = ToolButton('insert-picture')
        button.set_tooltip(_('choose a background'))
        button.props.sensitive = True
        button.connect('clicked', self._button_palette_cb)
        toolbar.insert(button, -1)
        button.show()
        self._bg_palette = button.get_palette()
        button_grid = Gtk.Grid()
        row = 0
        for bg in BGDICT.keys():
            if bg == 'custom':
                button = ToolButton('view-source')
            else:
                button = ToolButton(bg)
            button.connect('clicked', self._load_bg_cb, None, bg)
            eventbox = Gtk.EventBox()
            eventbox.connect('button_press_event', self._load_bg_cb, bg)
            label = Gtk.Label(BGDICT[bg][0])
            eventbox.add(label)
            label.show()
            button_grid.attach(button, 0, row, 1, 1)
            button.show()
            button_grid.attach(eventbox, 1, row, 1, 1)
            eventbox.show()
            row += 1
        self._bg_palette.set_content(button_grid)
        button_grid.show()

    def _button_palette_cb(self, button):
        palette = button.get_palette()
        if palette:
            if not palette.is_up():
                palette.popup(immediate=True, state=palette.SECONDARY)
            else:
                palette.popdown(immediate=True)

    def can_close(self):
        # Let everyone know we are leaving...
        if hasattr(self, '_bounce_window') and \
           self._bounce_window.we_are_sharing():
            self._playing = False
            self.send_event('l', {"data": (json_dump([self.nick]))})
        return True

    def _setup_canvas(self):
        canvas = Gtk.DrawingArea()
        canvas.set_size_request(Gdk.Screen.width(),
                                Gdk.Screen.height())
        self.set_canvas(canvas)
        canvas.show()
        return canvas

    def _load_bg_cb(self, widget, event, bg):
        if bg == 'custom':
            chooser(self, 'Image', self._new_background_from_journal)
        else:
            self._bounce_window.set_background(BGDICT[bg][1])

    def _load_ball_cb(self, widget, event, ball):
        if ball == 'custom':
            chooser(self, 'Image', self._new_ball_from_journal)
        else:
            self._bounce_window.ball.new_ball(os.path.join(
                activity.get_bundle_path(), 'images', ball + '.svg'))
            self._bounce_window.set_background(BGDICT[BALLDICT[ball][1]][1])
        self._current_ball = ball

    def _reset_ball(self):
        ''' If we switch back from sector mode, we need to restore the ball '''
        if self._bounce_window.mode != 'sectors':
            return

        if self._current_ball == 'custom':  # TODO: Reload custom ball
            self._current_ball = 'soccerball'
        self._bounce_window.ball.new_ball(os.path.join(
            activity.get_bundle_path(), 'images', self._current_ball + '.svg'))

    def _new_ball_from_journal(self, dsobject):
        ''' Load an image from the Journal. '''
        self._bounce_window.ball.new_ball_from_image(
            dsobject.file_path,
            os.path.join(activity.get_activity_root(), 'tmp', 'custom.png'))

    def _new_background_from_journal(self, dsobject):
        ''' Load an image from the Journal. '''
        self._bounce_window.new_background_from_image(None, dsobject=dsobject)

    def _fraction_cb(self, arg=None):
        ''' Set fraction mode '''
        self._reset_ball()
        self._bounce_window.mode = 'fractions'

    def _percent_cb(self, arg=None):
        ''' Set percent mode '''
        self._reset_ball()
        self._bounce_window.mode = 'percents'

    def _sector_cb(self, arg=None):
        ''' Set sector mode '''
        self._bounce_window.mode = 'sectors'

    def _add_fraction_cb(self, arg=None):
        ''' Read entries and add a fraction to the list '''
        try:
            numerator = int(self.numerator.get_text().strip())
        except ValueError:
            self.numerator.set_text('NAN')
            numerator = 0
        try:
            denominator = int(self.denominator.get_text().strip())
        except ValueError:
            self.denominator.set_text('NAN')
            denominator = 1
        if denominator == 0:
            self.denominator.set_text('ZDE')
        if numerator > denominator:
            numerator = 0
        if numerator > 0 and denominator > 1:
            fraction = '%d/%d' % (numerator, denominator)
            self._bounce_window.add_fraction(fraction)
            if 'custom' in self.metadata:  # Save to Journal
                self.metadata['custom'] = '%s,%s' % (
                    self.metadata['custom'], fraction)
            else:
                self.metadata['custom'] = fraction

            self.alert(
                _('New fraction'),
                _('Your fraction, %s, has been added to the program' %
                  (fraction)))

    def reset_label(self, label):
        ''' update the challenge label '''
        self._label.set_label(label)

    def alert(self, title, text=None):
        alert = NotifyAlert(timeout=5)
        alert.props.title = title
        alert.props.msg = text
        self.add_alert(alert)
        alert.connect('response', self._alert_cancel_cb)
        alert.show()

    def _alert_cancel_cb(self, alert, response_id):
        self.remove_alert(alert)

    # Collaboration-related methods

    def _setup_sharing(self):
        ''' Setup the Presence Service. '''
        self.pservice = presenceservice.get_instance()
        self.initiating = None  # sharing (True) or joining (False)

        owner = self.pservice.get_owner()
        self.owner = owner
        self._bounce_window.buddies.append(self.nick)
        self._player_colors = [self._colors]
        self._player_pixbufs = [
            svg_str_to_pixbuf(generate_xo_svg(scale=0.8, colors=self._colors))
        ]
        self._share = ''
        self.connect('shared', self._shared_cb)
        self.connect('joined', self._joined_cb)

    def _shared_cb(self, activity):
        ''' Either set up initial share...'''
        self._new_tube_common(True)

    def _joined_cb(self, activity):
        ''' ...or join an exisiting share. '''
        self._new_tube_common(False)

    def _new_tube_common(self, sharer):
        ''' Joining and sharing are mostly the same... '''
        if self.shared_activity is None:
            _logger.debug('Error: Failed to share or join activity ... \
                shared_activity is null in _shared_cb()')
            return

        self.initiating = sharer
        self.waiting_for_fraction = not sharer

        self.conn = self.shared_activity.telepathy_conn
        self.tubes_chan = self.shared_activity.telepathy_tubes_chan
        self.text_chan = self.shared_activity.telepathy_text_chan

        self.tubes_chan[telepathy.CHANNEL_TYPE_TUBES].connect_to_signal(
            'NewTube', self._new_tube_cb)

        if sharer:
            _logger.debug('This is my activity: making a tube...')
            id = self.tubes_chan[telepathy.CHANNEL_TYPE_TUBES].OfferDBusTube(
                SERVICE, {})

            self._label.set_label(_('Wait for others to join.'))
        else:
            _logger.debug('I am joining an activity: waiting for a tube...')
            self.tubes_chan[telepathy.CHANNEL_TYPE_TUBES].ListTubes(
                reply_handler=self._list_tubes_reply_cb,
                error_handler=self._list_tubes_error_cb)

        # display your XO on the toolbar
        self._player.set_from_pixbuf(self._player_pixbufs[0])

    def _list_tubes_reply_cb(self, tubes):
        ''' Reply to a list request. '''
        for tube_info in tubes:
            self._new_tube_cb(*tube_info)

    def _list_tubes_error_cb(self, e):
        ''' Log errors. '''
        _logger.debug('Error: ListTubes() failed: %s', e)

    def _new_tube_cb(self, id, initiator, type, service, params, state):
        ''' Create a new tube. '''
        _logger.debug(
            'Newtube: ID=%d initator=%d type=%d service=%s params=%r state=%d',
            id, initiator, type, service, params, state)

        if (type == telepathy.TUBE_TYPE_DBUS and service == SERVICE):
            if state == telepathy.TUBE_STATE_LOCAL_PENDING:
                self.tubes_chan[ \
                              telepathy.CHANNEL_TYPE_TUBES].AcceptDBusTube(id)

            self.collab = CollabWrapper(self)
            self.collab.message.connect(self.event_received_cb)
            self.collab.setup()

            # Let the sharer know a new joiner has arrived.
            if self.waiting_for_fraction:
                self.send_event('j', {"data": (json_dump([self.nick,
                                                     self._colors]))})

    def _setup_dispatch_table(self):
        self._processing_methods = {
            'j': [self._new_joiner, 'new joiner'],
            'b': [self._buddy_list, 'buddy list'],
            'f': [self._receive_a_fraction, 'receive a fraction'],
            't': [self._take_a_turn, 'take a turn'],
            'l': [self._buddy_left, 'buddy left']
            }

    def event_received_cb(self, event_message):
        ''' Data from a tube has arrived. '''
        if len(event_message) == 0:
            return
        try:
            command, payload = event_message.split('|', 2)
        except ValueError:
            _logger.debug('Could not split event message %s', event_message)
            return
        _logger.debug('received an event %s|%s', command, payload)
        if self._playing:
            self._processing_methods[command][0](payload)

    def _buddy_left(self, payload):
        [nick] = json_load(payload)
        self._label.set_label(nick + ' ' + _('has left.'))
        if self.initiating:
            self._remove_player(nick)
            payload = json_dump([self._bounce_window.buddies,
                                 self._player_colors])
            self.send_event('b', {"data": payload})
            # Restart from sharer's turn
            self._bounce_window.its_my_turn()

    def _new_joiner(self, payload):
        ''' Someone has joined; sharer adds them to the buddy list. '''
        [nick, colors] = json_load(payload)
        self._label.set_label(nick + ' ' + _('has joined.'))
        if self.initiating:
            self._append_player(nick, colors)
            payload = json_dump([self._bounce_window.buddies,
                                 self._player_colors])
            self.send_event('b', {"data": payload})
            if self._bounce_window.count == 0:  # Haven't started yet...
                self._bounce_window.its_my_turn()

    def _remove_player(self, nick):
        if nick in self._bounce_window.buddies:
            i = self._bounce_window.buddies.index(nick)
            self._bounce_window.buddies.remove(nick)
            self._player_colors.remove(self._player_colors[i])
            self._player_pixbufs.remove(self._player_pixbufs[i])

    def _append_player(self, nick, colors):
        ''' Keep a list of players, their colors, and an XO pixbuf '''
        if not nick in self._bounce_window.buddies:
            _logger.debug('appending %s to the buddy list', nick)
            self._bounce_window.buddies.append(nick)
            self._player_colors.append([str(colors[0]), str(colors[1])])
            self._player_pixbufs.append(svg_str_to_pixbuf(
                generate_xo_svg(scale=0.8,
                                colors=self._player_colors[-1])))

    def _buddy_list(self, payload):
        '''Sharer sent the updated buddy list, so regenerate internal lists'''
        if not self.initiating:
            [buddies, colors] = json_load(payload)
            self._bounce_window.buddies = buddies[:]
            self._player_colors = colors[:]
            self._player_pixbufs = []
            for colors in self._player_colors:
                self._player_pixbufs.append(svg_str_to_pixbuf(
                    generate_xo_svg(scale=0.8,
                                    colors=[str(colors[0]), str(colors[1])])))

    def send_a_fraction(self, fraction):
        ''' Send a fraction to other players. '''
        payload = json_dump(fraction)
        self.send_event('f', {"data": payload})

    def _receive_a_fraction(self, payload):
        ''' Receive a fraction from another player. '''
        fraction = json_load(payload)
        self._bounce_window.play_a_fraction(fraction)

    def _take_a_turn(self, nick):
        ''' If it is your turn, take it, otherwise, wait. '''
        if nick == self.nick:
            self._bounce_window.its_my_turn()
        else:
            self._bounce_window.its_their_turn(nick)

    def send_event(self, command, data):
        ''' Send event through the tube. '''
        _logger.debug('sending event: %s', command)
        if hasattr(self, 'collab') and self.collab is not None:
            data["command"] = command
            self.collab.post(data)

    def set_player_on_toolbar(self, nick):
        ''' Display the XO icon of the player whose turn it is. '''
        self._player.set_from_pixbuf(self._player_pixbufs[
                self._bounce_window.buddies.index(nick)])
        self._player.set_tooltip_text(nick)