File Content: DistUpgradeFetcher.py # DistUpgradeFetcher.py # -*- Mode: Python; indent-tabs-mode: nil; tab-width: 4; coding: utf-8 -*- # # Copyright (c) 2006 Canonical # # Author: Michael Vogt <michael.vogt@ubuntu.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 import gi gi.require_version("Gtk", "3.0") from gi.repository import Gtk, Gdk from .ReleaseNotesViewer import ReleaseNotesViewer from .utils import error from .DistUpgradeFetcherCore import DistUpgradeFetcherCore from .SimpleGtk3builderApp import SimpleGtkbuilderApp from gettext import gettext as _ from urllib.request import urlopen from urllib.error import 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): os.execv(self.script, [self.script] + self.run_options) 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 Submit