sugar-toolkit-gtk3/sugar/presence/Buddy.py

# Copyright (C) 2006, Red Hat, Inc.
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2 of the License, or (at your option) any later version.
#
# This library is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this library; if not, write to the
# Free Software Foundation, Inc., 59 Temple Place - Suite 330,
# Boston, MA 02111-1307, USA.

import gobject
import gtk
import dbus

class Buddy(gobject.GObject):

    __gsignals__ = {
        'icon-changed': (gobject.SIGNAL_RUN_FIRST, gobject.TYPE_NONE,
                         ([])),
        'disappeared': (gobject.SIGNAL_RUN_FIRST, gobject.TYPE_NONE,
                         ([])),
        'service-appeared': (gobject.SIGNAL_RUN_FIRST, gobject.TYPE_NONE,
                         ([gobject.TYPE_PYOBJECT])),
        'service-disappeared': (gobject.SIGNAL_RUN_FIRST, gobject.TYPE_NONE,
                         ([gobject.TYPE_PYOBJECT])),
        'joined-activity': (gobject.SIGNAL_RUN_FIRST, gobject.TYPE_NONE,
                         ([gobject.TYPE_PYOBJECT])),
        'left-activity': (gobject.SIGNAL_RUN_FIRST, gobject.TYPE_NONE,
                         ([gobject.TYPE_PYOBJECT])),
        'property-changed': (gobject.SIGNAL_RUN_FIRST, gobject.TYPE_NONE,
                         ([gobject.TYPE_PYOBJECT])),
        'current-activity-changed': (gobject.SIGNAL_RUN_FIRST, gobject.TYPE_NONE,
                         ([gobject.TYPE_PYOBJECT]))
    }

    _PRESENCE_SERVICE = "org.laptop.Presence"
    _BUDDY_DBUS_INTERFACE = "org.laptop.Presence.Buddy"

    def __init__(self, bus, new_obj_cb, del_obj_cb, object_path):
        gobject.GObject.__init__(self)
        self._object_path = object_path
        self._ps_new_object = new_obj_cb
        self._ps_del_object = del_obj_cb
        self._properties = {}
        bobj = bus.get_object(self._PRESENCE_SERVICE, object_path)
        self._buddy = dbus.Interface(bobj, self._BUDDY_DBUS_INTERFACE)
        self._buddy.connect_to_signal('IconChanged', self._icon_changed_cb)
        self._buddy.connect_to_signal('ServiceAppeared', self._service_appeared_cb)
        self._buddy.connect_to_signal('ServiceDisappeared', self._service_disappeared_cb)
        self._buddy.connect_to_signal('Disappeared', self._disappeared_cb)
        self._buddy.connect_to_signal('JoinedActivity', self._joined_activity_cb)
        self._buddy.connect_to_signal('LeftActivity', self._left_activity_cb)
        self._buddy.connect_to_signal('PropertyChanged', self._property_changed_cb)
        self._buddy.connect_to_signal('CurrentActivityChanged', self._current_activity_changed_cb)
        self._properties = self._get_properties_helper()

        self._current_activity = None
        try:
            self._current_activity = self._buddy.getCurrentActivity()
        except Exception, e:
            pass

    def _get_properties_helper(self):
        props = self._buddy.getProperties()
        if not props:
            return {}
        return props

    def object_path(self):
        return self._object_path

    def _emit_icon_changed_signal(self):
        self.emit('icon-changed')
        return False

    def _icon_changed_cb(self):
        gobject.idle_add(self._emit_icon_changed_signal)

    def _emit_disappeared_signal(self):
        self.emit('disappeared')

    def _disappeared_cb(self):
        gobject.idle_add(self._emit_disappeared_signal)

    def _emit_service_appeared_signal(self, object_path):
        self.emit('service-appeared', self._ps_new_object(object_path))
        return False

    def _service_appeared_cb(self, object_path):
        gobject.idle_add(self._emit_service_appeared_signal, object_path)

    def _emit_service_disappeared_signal(self, object_path):
        self.emit('service-disappeared', self._ps_new_object(object_path))
        return False

    def _service_disappeared_cb(self, object_path):
        gobject.idle_add(self._emit_service_disappeared_signal, object_path)

    def _emit_joined_activity_signal(self, object_path):
        self.emit('joined-activity', self._ps_new_object(object_path))
        return False

    def _joined_activity_cb(self, object_path):
        gobject.idle_add(self._emit_joined_activity_signal, object_path)

    def _emit_left_activity_signal(self, object_path):
        self.emit('left-activity', self._ps_new_object(object_path))
        return False

    def _left_activity_cb(self, object_path):
        gobject.idle_add(self._emit_left_activity_signal, object_path)

    def _handle_property_changed_signal(self, prop_list):
        self._properties = self._get_properties_helper()
        self.emit('property-changed', prop_list)
        return False

    def _property_changed_cb(self, prop_list):
        gobject.idle_add(self._handle_property_changed_signal, prop_list)

    def _handle_current_activity_changed_signal(self, act_list):
        if len(act_list) == 0:
            self._current_activity = None
            self.emit('current-activity-changed', None)
        else:
            self._current_activity = act_list[0]
            self.emit('current-activity-changed', self._ps_new_object(act_list[0]))
        return False

    def _current_activity_changed_cb(self, act_list):
        gobject.idle_add(self._handle_current_activity_changed_signal, act_list)

    def get_name(self):
        return self._properties['name']

    def get_ip4_address(self):
        return self._properties['ip4_address']

    def is_owner(self):
        return self._properties['owner']

    def get_color(self):
        return self._properties['color']

    def get_icon(self):
        return self._buddy.getIcon()

    def get_current_activity(self):
        if not self._current_activity:
            return None
        return self._ps_new_object(self._current_activity)

    def get_icon_pixbuf(self):
        icon = self._buddy.getIcon()
        if icon and len(icon):
            pbl = gtk.gdk.PixbufLoader()
            icon_data = ""
            for item in icon:
                if item < 0:
                    item = item + 128
                icon_data = icon_data + chr(item)
            pbl.write(icon_data)
            pbl.close()
            return pbl.get_pixbuf()
        else:
            return None

    def get_service_of_type(self, stype, activity=None):
        try:
            act_op = "/"
            if activity:
                act_op = activity.object_path()
            object_path = self._buddy.getServiceOfType(stype, act_op)
        except dbus.exceptions.DBusException:
            return None
        return self._ps_new_object(object_path)

    def get_joined_activities(self):
        try:
            resp = self._buddy.getJoinedActivities()
        except dbus.exceptions.DBusException:
            return []
        acts = []
        for item in resp:
            acts.append(self._ps_new_object(item))
        return acts