# DistUpgradeFetcher.py
# -*- Mode: Python; indent-tabs-mode: nil; tab-width: 4; coding: utf-8 -*-
#
# Copyright (c) 2006 Canonical
#
# Author: Michael Vogt <[email protected]>
#
# 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, Gdk

from .ReleaseNotesViewer import ReleaseNotesViewer
from .utils import error, inhibit_sleep, allow_sleep
from .DistUpgradeFetcherCore import DistUpgradeFetcherCore
from .SimpleGtk3builderApp import SimpleGtkbuilderApp
from gettext import gettext as _
try:
from urllib.request import urlopen
from urllib.error import HTTPError
except ImportError:
from urllib2 import urlopen, HTTPError
import os
import socket


class DistUpgradeFetcherGtk(DistUpgradeFetcherCore):

def __init__(self, new_dist, progress, parent, datadir):
DistUpgradeFetcherCore.__init__(self, new_dist, progress)
uifile = os.path.join(datadir, "gtkbuilder", "ReleaseNotes.ui")
self.widgets = SimpleGtkbuilderApp(uifile, "ubuntu-release-upgrader")
self.window_main = parent

def error(self, summary, message):
return error(self.window_main, summary, message)

def runDistUpgrader(self):
inhibit_sleep()
# now run it as root
if os.getuid() != 0:
os.execv("/usr/bin/gksu",
["gksu",
"--desktop",
"/usr/share/applications/update-manager.desktop",
"--",
self.script] + self.run_options)
else:
os.execv(self.script, [self.script] + self.run_options)
# we shouldn't come to this point, but if we do, undo our
# inhibit sleep
allow_sleep()

def showReleaseNotes(self):
# first try showing the webkit version, this may fail (return None
# because e.g. there is no webkit installed)
res = self._try_show_release_notes_webkit()
if res is not None:
return res
else:
# fallback to text
return self._try_show_release_notes_textview()

def _try_show_release_notes_webkit(self):
if self.new_dist.releaseNotesHtmlUri is not None:
try:
from .ReleaseNotesViewerWebkit import ReleaseNotesViewerWebkit
webkit_release_notes = ReleaseNotesViewerWebkit(
self.new_dist.releaseNotesHtmlUri)
webkit_release_notes.show()
self.widgets.scrolled_notes.add(webkit_release_notes)
res = self.widgets.dialog_release_notes.run()
self.widgets.dialog_release_notes.hide()
if res == Gtk.ResponseType.OK:
return True
return False
except ImportError:
pass
return None

def _try_show_release_notes_textview(self):
# FIXME: care about i18n! (append -$lang or something)
if self.new_dist.releaseNotesURI is not None:
uri = self._expandUri(self.new_dist.releaseNotesURI)
if self.window_main:
self.window_main.set_sensitive(False)
self.window_main.get_window().set_cursor(
Gdk.Cursor.new(Gdk.CursorType.WATCH))
while Gtk.events_pending():
Gtk.main_iteration()

# download/display the release notes
# FIXME: add some progress reporting here
res = Gtk.ResponseType.CANCEL
timeout = socket.getdefaulttimeout()
try:
socket.setdefaulttimeout(5)
release_notes = urlopen(uri)
notes = release_notes.read().decode("UTF-8", "replace")
textview_release_notes = ReleaseNotesViewer(notes)
textview_release_notes.show()
self.widgets.scrolled_notes.add(textview_release_notes)
release_widget = self.widgets.dialog_release_notes
release_widget.set_transient_for(self.window_main)
res = self.widgets.dialog_release_notes.run()
self.widgets.dialog_release_notes.hide()
except HTTPError:
primary = "<span weight=\"bold\" size=\"larger\">%s</span>" % \
_("Could not find the release notes")
secondary = _("The server may be overloaded. ")
dialog = Gtk.MessageDialog(self.window_main,
Gtk.DialogFlags.MODAL,
Gtk.MessageType.ERROR,
Gtk.ButtonsType.CLOSE, "")
dialog.set_title("")
dialog.set_markup(primary)
dialog.format_secondary_text(secondary)
dialog.run()
dialog.destroy()
except IOError:
primary = "<span weight=\"bold\" size=\"larger\">%s</span>" % \
_("Could not download the release notes")
secondary = _("Please check your internet connection.")
dialog = Gtk.MessageDialog(self.window_main,
Gtk.DialogFlags.MODAL,
Gtk.MessageType.ERROR,
Gtk.ButtonsType.CLOSE, "")
dialog.set_title("")
dialog.set_markup(primary)
dialog.format_secondary_text(secondary)
dialog.run()
dialog.destroy()
socket.setdefaulttimeout(timeout)
if self.window_main:
self.window_main.set_sensitive(True)
self.window_main.get_window().set_cursor(None)
# user clicked cancel
if res == Gtk.ResponseType.OK:
return True
return False