#!/usr/bin/env python
# -*- Mode: Python; indent-tabs-mode: nil; tab-width: 4; coding: utf-8 -*-
# (c) 2005-2007 Canonical, GPL

import apt_pkg
import os
import tempfile
from gettext import gettext as _

from gi.repository import GObject
# Extra GdkX11 import for pygobject bug #673396
# https://bugzilla.gnome.org/show_bug.cgi?id=673396
from gi.repository import GdkX11
GdkX11 # pyflakes

from UpdateManager.backend import InstallBackend


class InstallBackendSynaptic(InstallBackend):
""" Install backend based on synaptic """

def update(self):
opt = ["--update-at-startup"]
tempf = None
self._run_synaptic(self.ACTION_UPDATE, opt, tempf)

def commit(self, pkgs_install, pkgs_upgrade, close_on_done=False):
# close when update was successful (its ok to use a Synaptic::
# option here, it will not get auto-saved, because synaptic does
# not save options in non-interactive mode)
opt = []
if close_on_done:
opt.append("-o")
opt.append("Synaptic::closeZvt=true")
# custom progress strings
opt.append("--progress-str")
opt.append("%s" % _("Please wait, this can take some time."))
opt.append("--finish-str")
opt.append("%s" % _("Update is complete"))
tempf = tempfile.NamedTemporaryFile(mode="w+")
for pkg_name in pkgs_install + pkgs_upgrade:
tempf.write("%s\tinstall\n" % pkg_name)
opt.append("--set-selections-file")
opt.append("%s" % tempf.name)
tempf.flush()
self._run_synaptic(self.ACTION_INSTALL, opt, tempf)

def _run_synaptic(self, action, opt, tempf):
"""Execute synaptic."""
try:
apt_pkg.pkgsystem_unlock()
except SystemError:
pass
win = self.window_main.get_window()
try:
xid = win.get_xid()
except AttributeError:
xid = 0
cmd = ["/usr/bin/pkexec", "/usr/sbin/synaptic", "--hide-main-window",
"--non-interactive", "--parent-window-id",
"%s" % xid]
cmd.extend(opt)
flags = GObject.SPAWN_DO_NOT_REAP_CHILD
(pid, stdin, stdout, stderr) = GObject.spawn_async(cmd, flags=flags)
# Keep a reference to the data tuple passed to
# GObject.child_watch_add to avoid attempts to destroy it without a
# thread context: https://bugs.launchpad.net/bugs/724687
self.child_data = (action, tempf)
GObject.child_watch_add(pid, self._on_synaptic_exit, self.child_data)

def _on_synaptic_exit(self, pid, condition, data):
action, tempf = data
if tempf:
tempf.close()
self._action_done(action,
authorized=True,
success=os.WEXITSTATUS(condition) == 0,
error_string=None, error_desc=None)