/usr/lib/python3/dist-packages/UpdateManager/UpdateManager.py is in update-manager 1:0.196.11.
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# -*- Mode: Python; indent-tabs-mode: nil; tab-width: 4; coding: utf-8 -*-
#
# Copyright (c) 2012 Canonical
#
# Author: Michael Terry <michael.terry@canonical.com>
#
# 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307
# USA
from __future__ import absolute_import, print_function
from gi.repository import Gtk
from gi.repository import Gdk, GdkX11
from gi.repository import Gio
from gi.repository import GLib
GdkX11 # pyflakes
import warnings
warnings.filterwarnings("ignore", "Accessed deprecated property",
DeprecationWarning)
import apt_pkg
import os
import subprocess
import sys
import time
from gettext import gettext as _
import dbus
import dbus.service
from dbus.mainloop.glib import DBusGMainLoop
DBusGMainLoop(set_as_default=True)
from .UnitySupport import UnitySupport
from .Dialogs import (DistUpgradeDialog,
ErrorDialog,
NeedRestartDialog,
NoUpdatesDialog,
StoppedUpdatesDialog,
PartialUpgradeDialog,
UnsupportedDialog,
UpdateErrorDialog)
from .MetaReleaseGObject import MetaRelease
from .UpdatesAvailable import UpdatesAvailable
from .Core.AlertWatcher import AlertWatcher
from .Core.MyCache import MyCache
from .Core.roam import NetworkManagerHelper
from .Core.UpdateList import UpdateList
from .backend import (InstallBackend,
get_backend)
# file that signals if we need to reboot
REBOOT_REQUIRED_FILE = "/var/run/reboot-required"
class UpdateManager(Gtk.Window):
""" This class is the main window and work flow controller. The main
window will show panes, and it will morph between them. """
def __init__(self, datadir, options):
Gtk.Window.__init__(self)
# Public members
self.datadir = datadir
self.options = options
self.unity = UnitySupport()
self.controller = None
self.cache = None
self.update_list = None
self.meta_release = None
# Basic GTK+ parameters
self.set_title(_("Software Updater"))
self.set_icon_name("system-software-update")
self.set_position(Gtk.WindowPosition.CENTER)
# Keep window at a constant size
ctx = self.get_style_context()
ctx.connect("changed", lambda ctx: self.resize_to_standard_width())
# Signals
self.connect("delete-event", self._on_close)
self._setup_dbus()
# deal with no-focus-on-map
if self.options and self.options.no_focus_on_map:
self.set_focus_on_map(False)
self.iconify()
self.stick()
self.set_urgency_hint(True)
self.unity.set_urgency(True)
self.initial_focus_id = self.connect(
"focus-in-event", self.on_initial_focus_in)
# Look for a new release in a thread
self.meta_release = MetaRelease(
self.options and self.options.devel_release,
self.options and self.options.use_proposed)
def begin_user_resizable(self, stored_width=0, stored_height=0):
self.set_resizable(True)
if stored_width > 0 and stored_height > 0:
# There is a race here. If we immediately resize, it often doesn't
# take. Using idle_add helps, but we *still* occasionally don't
# restore the size correctly. Help needed to track this down!
GLib.idle_add(lambda: self.resize(stored_width, stored_height))
def end_user_resizable(self):
self.set_resizable(False)
def resize_to_standard_width(self):
if self.get_resizable():
return # only size to a specific em if we are a static size
num_em = 33 # per SoftwareUpdates spec
dpi = self.get_screen().get_resolution()
if dpi <= 0:
dpi = 96
ctx = self.get_style_context()
size = ctx.get_property("font-size", Gtk.StateFlags.NORMAL)
width = dpi / 72 * size * num_em
self.set_size_request(width, -1)
def on_initial_focus_in(self, widget, event):
"""callback run on initial focus-in (if started unmapped)"""
self.unstick()
self.set_urgency_hint(False)
self.unity.set_urgency(False)
self.disconnect(self.initial_focus_id)
return False
def _start_pane(self, pane):
if self.controller is not None:
self.controller.stop()
if isinstance(self.controller, Gtk.Widget):
self.controller.destroy()
self.controller = pane
self._look_ready()
self.end_user_resizable()
if pane is None:
return
if isinstance(pane, Gtk.Widget):
self.add(pane)
pane.start()
self.show_all()
else:
pane.start()
self.hide()
def _on_close(self, widget, data=None):
self.close()
def close(self):
if not self.get_sensitive():
return True
if self.controller:
controller_close = self.controller.close()
if controller_close:
return controller_close
self.exit()
def exit(self):
""" exit the application, save the state """
self._start_pane(None)
sys.exit(0)
def show_settings(self):
try:
apt_pkg.pkgsystem_unlock()
except SystemError:
pass
cmd = ["/usr/bin/software-properties-gtk",
"--open-tab", "2",
"--toplevel", "%s" % self.get_window().get_xid()
]
self._look_busy()
try:
p = subprocess.Popen(cmd)
except OSError:
pass
else:
while p.poll() is None:
while Gtk.events_pending():
Gtk.main_iteration()
time.sleep(0.05)
finally:
self.start_available()
def start_update(self):
if self.options.no_update:
self.start_available()
return
update_backend = get_backend(self, InstallBackend.ACTION_UPDATE)
self._start_pane(update_backend)
def start_install(self):
install_backend = get_backend(self, InstallBackend.ACTION_INSTALL)
self._start_pane(install_backend)
def start_available(self, cancelled_update=False, error_occurred=False):
self._look_busy()
self.refresh_cache()
pane = self._make_available_pane(self.cache.install_count,
os.path.exists(REBOOT_REQUIRED_FILE),
cancelled_update, error_occurred)
self._start_pane(pane)
def _make_available_pane(self, install_count, need_reboot=False,
cancelled_update=False, error_occurred=False):
if install_count == 0:
# Need Restart > New Release > No Updates
if need_reboot:
return NeedRestartDialog(self)
pane = self._check_meta_release()
if pane:
return pane
elif cancelled_update:
return StoppedUpdatesDialog(self)
else:
return NoUpdatesDialog(self, error_occurred=error_occurred)
else:
header = None
desc = None
if error_occurred:
desc = _("Some software couldn’t be checked for updates.")
elif cancelled_update:
header = _("You stopped the check for updates.")
desc = _("Updated software is available from "
"a previous check.")
return UpdatesAvailable(self, header, desc, need_reboot)
def start_error(self, is_update_error, header, desc):
if is_update_error:
self._start_pane(UpdateErrorDialog(self, header, desc))
else:
self._start_pane(ErrorDialog(self, header, desc))
def _look_busy(self):
self.set_sensitive(False)
if self.get_window() is not None:
self.get_window().set_cursor(Gdk.Cursor.new(Gdk.CursorType.WATCH))
def _look_ready(self):
self.set_sensitive(True)
if self.get_window() is not None:
self.get_window().set_cursor(None)
self.get_window().set_functions(Gdk.WMFunction.ALL)
def _check_meta_release(self):
if self.meta_release is None:
return None
if self.meta_release.downloading:
# Block until we get an answer
GLib.idle_add(self._meta_release_wait_idle)
Gtk.main()
# Check if there is anything to upgrade to or a known-broken upgrade
next = self.meta_release.upgradable_to
if not next or next.upgrade_broken:
return None
# Check for end-of-life
if self.meta_release.no_longer_supported:
return UnsupportedDialog(self, self.meta_release)
# Check for new fresh release
settings = Gio.Settings.new("com.ubuntu.update-manager")
if (self.meta_release.new_dist and
(self.options.check_dist_upgrades or
settings.get_boolean("check-dist-upgrades"))):
return DistUpgradeDialog(self, self.meta_release)
return None
def _meta_release_wait_idle(self):
# 'downloading' is changed in a thread, but the signal
# 'done_downloading' is done in our thread's event loop. So we know
# that it won't fire while we're in this function.
if not self.meta_release.downloading:
Gtk.main_quit()
else:
self.meta_release.connect("done_downloading", Gtk.main_quit)
return False
# fixme: we should probably abstract away all the stuff from libapt
def refresh_cache(self):
# get the lock
try:
apt_pkg.pkgsystem_lock()
except SystemError:
pass
try:
if self.cache is None:
self.cache = MyCache(None)
else:
self.cache.open(None)
self.cache._initDepCache()
except AssertionError:
# if the cache could not be opened for some reason,
# let the release upgrader handle it, it deals
# a lot better with this
self._start_pane(PartialUpgradeDialog(self))
# we assert a clean cache
header = _("Software index is broken")
desc = _("It is impossible to install or remove any software. "
"Please use the package manager \"Synaptic\" or run "
"\"sudo apt-get install -f\" in a terminal to fix "
"this issue at first.")
self.start_error(True, header, desc)
except SystemError as e:
header = _("Could not initialize the package information")
desc = _("An unresolvable problem occurred while "
"initializing the package information.\n\n"
"Please report this bug against the 'update-manager' "
"package and include the following error "
"message:\n") + str(e)
self.start_error(True, header, desc)
# Let the Gtk event loop breath if it hasn't had a chance.
def iterate():
while Gtk.events_pending():
Gtk.main_iteration()
iterate()
self.update_list = UpdateList(self)
try:
self.update_list.update(self.cache, eventloop_callback=iterate)
except SystemError as e:
header = _("Could not calculate the upgrade")
desc = _("An unresolvable problem occurred while "
"calculating the upgrade.\n\n"
"Please report this bug against the 'update-manager' "
"package and include the following error "
"message:\n") + str(e)
self.start_error(True, header, desc)
if self.update_list.distUpgradeWouldDelete > 0:
self._start_pane(PartialUpgradeDialog(self))
def _setup_dbus(self):
""" this sets up a dbus listener if none is installed alread """
# check if there is another g-a-i already and if not setup one
# listening on dbus
try:
bus = dbus.SessionBus()
except:
print("warning: could not initiate dbus")
return
try:
proxy_obj = bus.get_object('org.freedesktop.UpdateManager',
'/org/freedesktop/UpdateManagerObject')
iface = dbus.Interface(proxy_obj,
'org.freedesktop.UpdateManagerIFace')
iface.bringToFront()
#print("send bringToFront")
sys.exit(0)
except dbus.DBusException:
#print("no listening object (%s) " % e)
bus_name = dbus.service.BusName('org.freedesktop.UpdateManager',
bus)
self.dbusController = UpdateManagerDbusController(self, bus_name)
class UpdateManagerDbusController(dbus.service.Object):
""" this is a helper to provide the UpdateManagerIFace """
def __init__(self, parent, bus_name,
object_path='/org/freedesktop/UpdateManagerObject'):
dbus.service.Object.__init__(self, bus_name, object_path)
self.parent = parent
self.alert_watcher = AlertWatcher()
self.alert_watcher.connect("network-alert", self._on_network_alert)
self.connected = False
@dbus.service.method('org.freedesktop.UpdateManagerIFace')
def bringToFront(self):
self.parent.present()
return True
@dbus.service.method('org.freedesktop.UpdateManagerIFace')
def upgrade(self):
try:
self.parent.start_install()
return True
except:
return False
def _on_network_alert(self, watcher, state):
if state in NetworkManagerHelper.NM_STATE_CONNECTED_LIST:
self.connected = True
else:
self.connected = False
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