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Documentation for the activity and buddy presence objects

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This commit is contained in:
Mike C. Fletcher 2007-04-15 00:27:48 -04:00
parent 0fc5e67dcc
commit 8635a702c6
2 changed files with 119 additions and 2 deletions
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43
sugar/presence/activity.py
View File

@ -1,3 +1,4 @@
"""UI interface to an activity in the presence service"""
# Copyright (C) 2007, Red Hat, Inc.
#
# This library is free software; you can redistribute it and/or
@ -19,7 +20,19 @@ import gobject
import dbus
class Activity(gobject.GObject):
"""UI interface for an Activity in the presence service
Activities in the presence service represent other user's
shared activities and your own activities (XXX shared or
otherwise?)
Properties:
id
color
name
type
joined
"""
__gsignals__ = {
'buddy-joined': (gobject.SIGNAL_RUN_FIRST, gobject.TYPE_NONE,
([gobject.TYPE_PYOBJECT])),
@ -33,6 +46,7 @@ class Activity(gobject.GObject):
_ACTIVITY_DBUS_INTERFACE = "org.laptop.Sugar.Presence.Activity"
def __init__(self, bus, new_obj_cb, del_obj_cb, object_path):
"""Initialse the activity interface, connecting to service"""
gobject.GObject.__init__(self)
self._object_path = object_path
self._ps_new_object = new_obj_cb
@ -50,9 +64,11 @@ class Activity(gobject.GObject):
self._joined = False
def object_path(self):
"""Get our dbus object path"""
return self._object_path
def _emit_buddy_joined_signal(self, object_path):
"""Generate buddy-joined GObject signal with presence Buddy object"""
self.emit('buddy-joined', self._ps_new_object(object_path))
return False
@ -60,6 +76,10 @@ class Activity(gobject.GObject):
gobject.idle_add(self._emit_buddy_joined_signal, object_path)
def _emit_buddy_left_signal(self, object_path):
"""Generate buddy-left GObject signal with presence Buddy object
XXX note use of _ps_new_object instead of _ps_del_object here
"""
self.emit('buddy-left', self._ps_new_object(object_path))
return False
@ -67,6 +87,10 @@ class Activity(gobject.GObject):
gobject.idle_add(self._emit_buddy_left_signal, object_path)
def _emit_new_channel_signal(self, object_path):
"""Generate new-channel GObject signal with channel object path
New telepathy-python communications channel has been opened
"""
self.emit('new-channel', object_path)
return False
@ -74,27 +98,35 @@ class Activity(gobject.GObject):
gobject.idle_add(self._emit_new_channel_signal, object_path)
def get_id(self):
"""Retrieve the unique identifier for this activity instance"""
# Cache activity ID, which should never change anyway
if not self._id:
self._id = self._activity.GetId()
return self._id
def get_color(self):
"""Retrieve the activity icon colour for this activity instance"""
if not self._color:
self._color = self._activity.GetColor()
return self._color
def get_name(self):
"""Retrieve the activity name for this activity instance"""
if not self._name:
self._name = self._activity.GetName()
return self._name
def get_type(self):
"""Retrieve the activity/bundle type for this activity instance"""
if not self._type:
self._type = self._activity.GetType()
return self._type
def get_joined_buddies(self):
"""Retrieve the set of Buddy objects attached to this activity
returns list of presence Buddy objects
"""
resp = self._activity.GetJoinedBuddies()
buddies = []
for item in resp:
@ -102,15 +134,26 @@ class Activity(gobject.GObject):
return buddies
def join(self):
"""Join this activity
XXX if these are all activities, can I join my own activity?
"""
if self._joined:
return
self._activity.Join()
self._joined = True
def get_channels(self):
"""Retrieve communications channel descriptions for the activity
Returns (bus name, connection, channels) for the activity
XXX what are those values?
"""
(bus_name, connection, channels) = self._activity.GetChannels()
return bus_name, connection, channels
def owner_has_joined(self):
"""Retrieve whether the owner of the activity is active within it"""
# FIXME
return False

74
sugar/presence/buddy.py
View File

@ -1,3 +1,4 @@
"""UI interface to a buddy in the presence service"""
# Copyright (C) 2007, Red Hat, Inc.
#
# This library is free software; you can redistribute it and/or
@ -20,13 +21,33 @@ import gtk
import dbus
def _bytes_to_string(bytes):
"""Convertes an short-int (char) array to a string
returns string or None for a null sequence
"""
if len(bytes):
# if there's an internal buffer, we could use
# ctypes to pull it out without this...
return ''.join([chr(item) for item in bytes])
return None
class Buddy(gobject.GObject):
"""UI interface for a Buddy in the presence service
Each buddy interface tracks a set of activities and properties
that can be queried to provide UI controls for manipulating
the presence interface.
Properties Dictionary:
'key': public key,
'nick': nickname ,
'color': color (XXX what format),
'current-activity': (XXX dbus path?),
'owner': (XXX dbus path?),
'icon': (XXX pixel data for an icon?)
See __gproperties__
"""
__gsignals__ = {
'icon-changed': (gobject.SIGNAL_RUN_FIRST, gobject.TYPE_NONE,
([])),
@ -51,6 +72,13 @@ class Buddy(gobject.GObject):
_BUDDY_DBUS_INTERFACE = "org.laptop.Sugar.Presence.Buddy"
def __init__(self, bus, new_obj_cb, del_obj_cb, object_path):
"""Initialise the reference to the buddy
bus -- dbus bus object
new_obj_cb -- callback to call when this buddy joins an activity
del_obj_cb -- callback to call when this buddy leaves an activity
object_path -- path to the buddy object
"""
gobject.GObject.__init__(self)
self._object_path = object_path
self._ps_new_object = new_obj_cb
@ -68,12 +96,19 @@ class Buddy(gobject.GObject):
self._icon = None
def _get_properties_helper(self):
"""Retrieve the Buddy's property dictionary from the service object
"""
props = self._buddy.GetProperties()
if not props:
return {}
return props
def do_get_property(self, pspec):
"""Retrieve a particular property from our property dictionary
pspec -- XXX some sort of GTK specifier object with attributes
including 'name', 'active' and 'icon-name'
"""
if pspec.name == "key":
return self._properties["key"]
elif pspec.name == "nick":
@ -97,48 +132,79 @@ class Buddy(gobject.GObject):
return self._icon
def object_path(self):
"""Retrieve our dbus object path"""
return self._object_path
def _emit_icon_changed_signal(self, bytes):
"""Emit GObject signal when icon has changed"""
self._icon = _bytes_to_string(bytes)
self.emit('icon-changed')
return False
def _icon_changed_cb(self, icon_data):
"""Handle dbus signal by emitting a GObject signal"""
gobject.idle_add(self._emit_icon_changed_signal, icon_data)
def _emit_joined_activity_signal(self, object_path):
"""Emit activity joined signal with Activity object"""
self.emit('joined-activity', self._ps_new_object(object_path))
return False
def _joined_activity_cb(self, object_path):
"""Handle dbus signal by emitting a GObject signal
Stores the activity in activities dictionary as well
"""
if not self._activities.has_key(object_path):
self._activities[object_path] = self._ps_new_object(object_path)
gobject.idle_add(self._emit_joined_activity_signal, object_path)
def _emit_left_activity_signal(self, object_path):
"""Emit activity left signal with Activity object
XXX this calls self._ps_new_object instead of self._ps_del_object,
which would seem to be the incorrect callback?
"""
self.emit('left-activity', self._ps_new_object(object_path))
return False
def _left_activity_cb(self, object_path):
"""Handle dbus signal by emitting a GObject signal
Also removes from the activities dictionary
"""
if self._activities.has_key(object_path):
del self._activities[object_path]
gobject.idle_add(self._emit_left_activity_signal, object_path)
def _handle_property_changed_signal(self, prop_list):
"""Emit property-changed signal with property dictionary
Generates a property-changed signal with the results of
_get_properties_helper()
"""
self._properties = self._get_properties_helper()
# FIXME: don't leak unexposed property names
self.emit('property-changed', prop_list)
return False
def _property_changed_cb(self, prop_list):
"""Handle dbus signal by emitting a GObject signal"""
gobject.idle_add(self._handle_property_changed_signal, prop_list)
def get_icon_pixbuf(self):
"""Retrieve Buddy's icon as a GTK pixel buffer
XXX Why aren't the icons coming in as SVG?
"""
if self.props.icon and len(self.props.icon):
pbl = gtk.gdk.PixbufLoader()
icon_data = ""
for item in self.props.icon:
# XXX this is a slow way to convert the data
# under Python 2.5 and below, collect in a
# list and then join with "", see
# _bytes_to_string in this module
icon_data = icon_data + chr(item)
pbl.write(icon_data)
pbl.close()
@ -147,6 +213,14 @@ class Buddy(gobject.GObject):
return None
def get_joined_activities(self):
"""Retrieve the set of all activities which this buddy has joined
Uses the GetJoinedActivities method on the service
object to produce object paths, wraps each in an
Activity object.
returns list of presence Activity objects
"""
try:
resp = self._buddy.GetJoinedActivities()
except dbus.exceptions.DBusException: