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# Copyright (C) 2006-2007 Owen Williams.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program 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 General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
import time
import logging
import gobject
import dbus
from sugar.graphics.xocolor import XoColor
from sugar.presence import presenceservice
from sugar import profile
_SERVICE_NAME = "org.laptop.Activity"
_SERVICE_PATH = "/org/laptop/Activity"
_SERVICE_INTERFACE = "org.laptop.Activity"
class HomeActivity(gobject.GObject):
"""Activity which appears in the "Home View" of the Sugar shell
This class stores the Sugar Shell's metadata regarding a
given activity/application in the system. It interacts with
the sugar.activity.* modules extensively in order to
accomplish its tasks.
"""
__gtype_name__ = 'SugarHomeActivity'
__gproperties__ = {
'launching' : (bool, None, None, False,
gobject.PARAM_READWRITE),
}
def __init__(self, activity_info, activity_id):
"""Initialise the HomeActivity
activity_info -- sugar.activity.registry.ActivityInfo instance,
provides the information required to actually
create the new instance. This is, in effect,
the "type" of activity being created.
activity_id -- unique identifier for this instance
of the activity type
"""
gobject.GObject.__init__(self)
self._window = None
self._xid = None
self._pid = None
self._service = None
self._activity_id = activity_id
self._activity_info = activity_info
self._launch_time = time.time()
self._launching = False
self._retrieve_service()
if not self._service:
bus = dbus.SessionBus()
bus.add_signal_receiver(self._name_owner_changed_cb,
signal_name="NameOwnerChanged",
dbus_interface="org.freedesktop.DBus")
def set_window(self, window):
"""An activity is 'launched' once we get its window."""
if self._window or self._xid:
raise RuntimeError("Activity is already launched!")
if not window:
raise ValueError("window must be valid")
self._window = window
self._xid = window.get_xid()
self._pid = window.get_pid()
def get_service(self):
"""Get the activity service
Note that non-native Sugar applications will not have
such a service, so the return value will be None in
those cases.
"""
return self._service
def get_title(self):
"""Retrieve the application's root window's suggested title"""
return self._window.get_name()
def get_icon_name(self):
"""Retrieve the activity's icon (file) name"""
if self._activity_info:
return self._activity_info.icon
else:
return 'image-missing'
def get_icon_color(self):
"""Retrieve the appropriate icon colour for this activity
Uses activity_id to index into the PresenceService's
set of activity colours, if the PresenceService does not
have an entry (implying that this is not a Sugar-shared application)
uses the local user's profile.get_color() to determine the
colour for the icon.
"""
pservice = presenceservice.get_instance()
# HACK to suppress warning in logs when activity isn't found
# (if it's locally launched and not shared yet)
activity = None
for act in pservice.get_activities():
if self._activity_id == act.props.id:
activity = act
break
if activity != None:
return XoColor(activity.props.color)
else:
return profile.get_color()
def get_activity_id(self):
"""Retrieve the "activity_id" passed in to our constructor
This is a "globally likely unique" identifier generated by
sugar.util.unique_id
"""
return self._activity_id
def get_xid(self):
"""Retrieve the X-windows ID of our root window"""
return self._xid
def get_window(self):
"""Retrieve the X-windows root window of this application
This was stored by the set_window method, which was
called by HomeModel._add_activity, which was called
via a callback that looks for all 'window-opened'
events.
HomeModel currently uses a dbus service query on the
activity to determine to which HomeActivity the newly
launched window belongs.
"""
return self._window
def get_type(self):
"""Retrieve the activity bundle id for future reference"""
if self._activity_info:
return self._activity_info.bundle_id
else:
return None
def get_launch_time(self):
"""Return the time at which the activity was first launched
Format is floating-point time.time() value
(seconds since the epoch)
"""
return self._launch_time
def get_pid(self):
"""Returns the activity's PID"""
return self._pid
def equals(self, activity):
if self._activity_id and activity.get_activity_id():
return self._activity_id == activity.get_activity_id()
if self._xid and activity.get_xid():
return self._xid == activity.get_xid()
return False
def do_set_property(self, pspec, value):
if pspec.name == 'launching':
self._launching = value
def do_get_property(self, pspec):
if pspec.name == 'launching':
return self._launching
def _get_service_name(self):
if self._activity_id:
return _SERVICE_NAME + self._activity_id
else:
return None
def _retrieve_service(self):
if not self._activity_id:
return
try:
bus = dbus.SessionBus()
proxy = bus.get_object(self._get_service_name(),
_SERVICE_PATH + "/" + self._activity_id)
self._service = dbus.Interface(proxy, _SERVICE_INTERFACE)
except dbus.DBusException:
self._service = None
def _name_owner_changed_cb(self, name, old, new):
if name == self._get_service_name():
self._retrieve_service()
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