/usr/share/pyshared/GnomeCodecInstall/MainWindow.py is in gnome-codec-install 0.4.7+nmu1ubuntu3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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# Copyright (c) 2008 Sebastian Dröge <sebastian.droege@collabora.co.uk>, GPL
import gettext
from gettext import gettext as _
import gobject
import gtk
import pango
import gst
import gst.pbutils
import apt
import apt_pkg
import os
import PackageWorker
# the list columns
(LIST_PKG_TO_INSTALL,
LIST_PKG_NAME,
LIST_PKG_REQUEST) = range(3)
# codecs that might be problematic for patent reasons
CODEC_WARNING_LIST = [ "gstreamer0.10-plugins-bad",
"gstreamer0.10-plugins-bad-multiverse",
"gstreamer0.10-ffmpeg",
"gstreamer0.10-plugins-ugly",
]
class CodecDetailsView(gtk.TextView):
" special view to display for the codec information "
def __init__(self):
gtk.TextView.__init__(self)
self.set_property("editable", False)
self.set_cursor_visible(False)
self.set_wrap_mode(gtk.WRAP_WORD)
self.buffer = gtk.TextBuffer()
self.set_buffer(self.buffer)
# tag names for the elements we insert
self.buffer.create_tag("summary",
scale=pango.SCALE_LARGE,
weight=pango.WEIGHT_BOLD)
self.buffer.create_tag("homepage",
weight=pango.WEIGHT_BOLD)
self.buffer.create_tag("provides",
weight=pango.WEIGHT_BOLD)
self.buffer.create_tag("description",
weight=pango.WEIGHT_BOLD)
self.buffer.insert_with_tags_by_name(self.buffer.get_start_iter(),
_("No package selected"),
"summary")
def show_codec(self, pkg=None, requests=None):
# clear the buffer
self.buffer.set_text("")
iter = self.buffer.get_start_iter()
self.buffer.place_cursor(iter)
# if nothing is selected we are done
if pkg is None:
self.buffer.insert_with_tags_by_name(iter,
_("No package selected"),
"summary")
return
assert pkg.candidate
# now format the description
self.buffer.insert_with_tags_by_name(iter,
pkg.candidate.summary,
"summary")
self.buffer.insert(iter, "\n\n")
if pkg.candidate.homepage:
self.buffer.insert_with_tags_by_name(iter,
_("Homepage:")+"\n",
"homepage")
self.buffer.insert(iter, pkg.candidate.homepage + "\n\n")
self.buffer.insert_with_tags_by_name(iter,
_("Provides:")+"\n",
"provides")
for request in requests:
self.buffer.insert(iter, request.description + "\n")
self.buffer.insert(iter, "\n")
self.buffer.insert_with_tags_by_name(iter,
_("Long Description:")+"\n",
"description")
self.buffer.insert(iter, pkg.candidate.description + "\n")
def set_transient_for_xid(widget, xid):
try:
if xid != None:
parent = gtk.gdk.window_foreign_new(xid)
if parent != None:
widget.realize()
widget.get_window().set_transient_for(parent)
except:
pass
class MainWindow(object):
def __init__(self,requests,xid):
self._requests = requests
self._window = gtk.Window(gtk.WINDOW_TOPLEVEL)
self._window.set_title(_("Install Multimedia Plugins"))
self._window.set_property("default_width", 600)
self._window.set_property("default_height", 500)
self._window.set_border_width(10)
self._window.set_position(gtk.WIN_POS_CENTER_ON_PARENT)
self._return_code = gst.pbutils.INSTALL_PLUGINS_NOT_FOUND
self._window.connect("delete_event", self._delete_event)
self._window.connect("destroy", self._destroy)
set_transient_for_xid(self._window, xid)
vbox_window = gtk.VBox()
vbox_packages = gtk.VBox(homogeneous=False)
label = gtk.Label()
label.set_line_wrap(True)
label.set_justify(gtk.JUSTIFY_LEFT)
label.set_alignment(0.0, 0.0)
plugins = ""
for request in self._requests:
plugins += "\n- " + request.description
label.set_markup(_("<b><big>Please select the packages for installation "
"to provide the following plugins:</big></b>\n") + plugins)
vbox_packages.pack_start(label, False, False, 10)
self._package_list_model = gtk.ListStore(gobject.TYPE_BOOLEAN,
gobject.TYPE_STRING,
gobject.TYPE_PYOBJECT)
self._package_list = gtk.TreeView(self._package_list_model)
self._package_list.set_headers_visible(True)
self._package_list.connect("cursor-changed", self._package_cursor_changed)
toggle_renderer = gtk.CellRendererToggle()
toggle_renderer.connect("toggled", self._toggle_install)
self._package_list.append_column(gtk.TreeViewColumn(None, toggle_renderer, active=0))
text_renderer = gtk.CellRendererText()
text_renderer.set_data("column", 1)
self._package_list.append_column(gtk.TreeViewColumn(_("Package"), text_renderer, text=1))
scrolled_window = gtk.ScrolledWindow()
scrolled_window.set_policy(gtk.POLICY_AUTOMATIC, gtk.POLICY_AUTOMATIC)
#scrolled_window.set_shadow_type(gtk.SHADOW_IN)
scrolled_window.add(self._package_list)
vbox_packages.pack_start(scrolled_window, True, True, 10)
expander = gtk.Expander(_("Details") + ":")
expander.connect("notify::expanded", self._package_details_expanded)
self._package_details = CodecDetailsView()
scrolled_window = gtk.ScrolledWindow()
scrolled_window.set_policy(gtk.POLICY_AUTOMATIC, gtk.POLICY_AUTOMATIC)
#scrolled_window.set_shadow_type(gtk.SHADOW_IN)
scrolled_window.add_with_viewport(self._package_details)
expander.add(scrolled_window)
vbox_packages.pack_start(expander, False, False, 10)
vbox_window.pack_start(vbox_packages, True, True, 0)
button_box = gtk.HButtonBox()
button_box.set_layout(gtk.BUTTONBOX_END)
button_box.set_spacing(5)
#TODO integrate help by calling yelp
#btn = gtk.Button(_("Help"), gtk.STOCK_HELP)
#button_box.add(btn)
#button_box.set_child_secondary(btn, True)
btn = gtk.Button(_("Cancel"), gtk.STOCK_CANCEL)
btn.connect("clicked", self._canceled)
button_box.add(btn)
btn = gtk.Button(_("Install"), None)
btn.connect("clicked", self._install_selection)
button_box.add(btn)
vbox_window.pack_start(button_box, False, False, 0)
self._window.add(vbox_window)
self._window.show_all()
def modal_dialog(self, type, primary, secondary=""):
" helper that shows a modal dialog of the given type "
dlg = gtk.MessageDialog(self._window,
gtk.DIALOG_MODAL | gtk.DIALOG_DESTROY_WITH_PARENT,
type,
gtk.BUTTONS_OK,
primary)
dlg.set_title(primary)
dlg.format_secondary_text(secondary)
res = dlg.run()
dlg.destroy()
return res
def _package_cursor_changed(self, treeview, data=None):
selection = treeview.get_selection()
(model, iter) = selection.get_selected()
if iter:
pkgname = model.get_value(iter, LIST_PKG_NAME)
requests = model.get_value(iter, LIST_PKG_REQUEST)
self._package_details.show_codec(self.cache[pkgname], requests)
else:
self._package_details.show_codec(None)
def _package_details_expanded(self, expander, param_spec, data=None):
if expander.get_expanded():
expander.get_child().show_all()
expander.set_size_request(-1, 120)
else:
expander.set_size_request(-1, -1)
expander.get_child().hide_all()
def _confirm_codec_install(self, install_list):
" helper that shows a codec warning dialog "
for pkgname in CODEC_WARNING_LIST:
if pkgname in install_list:
break
else:
return
dia = gtk.MessageDialog(parent=self._window,
type=gtk.MESSAGE_WARNING,
buttons=gtk.BUTTONS_CANCEL)
header = _("Confirm installation of restricted software")
body = _("The use of this software may be "
"restricted in some countries. You "
"must verify that one of the following is true:\n\n"
"* These restrictions do not apply in your country "
"of legal residence\n"
"* You have permission to use this software (for "
"example, a patent license)\n"
"* You are using this software for research "
"purposes only")
dia.set_markup("<big><b>%s</b></big>\n\n%s" % (header,body))
dia.add_button(_("C_onfirm"), gtk.RESPONSE_OK)
res = dia.run()
dia.hide()
if res != gtk.RESPONSE_OK:
return False
return True
def _toggle_install(self, cell, path, data=None):
iter = self._package_list_model.get_iter((int(path),))
enabled = self._package_list_model.get_value(iter, LIST_PKG_TO_INSTALL)
enabled = not enabled
self._package_list_model.set(iter, LIST_PKG_TO_INSTALL, enabled)
def _populate_list(self):
dlg = gtk.Dialog(_("Searching Plugin Packages"), self._window, gtk.DIALOG_MODAL | gtk.DIALOG_DESTROY_WITH_PARENT, None)
dlg.set_has_separator(False)
dlg.set_deletable(False)
dlg.set_border_width(5)
label = gtk.Label()
label.set_markup("<b><big>" + _("Searching Plugin Packages") + "</big></b>\n" +
_("This might take up to one or two minutes."))
dlg.vbox.pack_start(label, True, True, 5)
progressbar = gtk.ProgressBar()
progressbar.set_fraction(0.0)
dlg.vbox.pack_start(progressbar, True, True, 5)
dlg.show_all()
self.update_ui()
progressbar.set_text(_("Loading package cache..."))
self.cache = apt.Cache(PackageWorker.GtkOpProgress())
self.update_ui()
npackages = 0
package_count = len(self.cache)
progressbar.set_text(_("Searching for requested plugins..."))
# maps request to pkgrecord entry and provide information if
# gst caps must be used or the string needs to be split
requests_map = [
# request pkgrecord caps split
("decoder", "Gstreamer-Decoders", True, False),
("encoder", "Gstreamer-Encoders", True, False),
("urisource", "Gstreamer-Uri-Sources", False, True),
("urisink", "Gstreamer-Uri-Sinks", False, True),
("element", "Gstreamer-Elements", False, True),
]
# iterate all the packages
for (cur_package, pkg) in enumerate(self.cache):
if cur_package % 500 == 0:
progressbar.set_fraction(float(cur_package) / package_count)
self.update_ui()
if pkg.is_installed and not pkg.is_upgradable:
continue
# prefer native versions on a multiarch system
if ":" in pkg.name and pkg.name.split(":")[0] in self.cache:
continue
try:
record = pkg.candidate.record
except AttributeError:
continue
try:
major, minor = record["Gstreamer-Version"].split(".")
except KeyError:
continue
if (int(major) != self._requests[0].major or
int(minor) != self._requests[0].minor):
continue
add_pkg = False
pkg_requests = []
# check requests
for request in self._requests:
self.update_ui()
for (request_str, pkgrecord_str, check_caps, do_split) in requests_map:
if request.gstkind == request_str:
if not pkgrecord_str in record:
continue
if check_caps:
caps = gst.Caps(record[pkgrecord_str])
if request.caps.intersect(caps):
add_pkg = True
pkg_requests.append(request)
break
if do_split:
elms = record[pkgrecord_str].split(",")
if request.feature in elms:
add_pkg = True
pkg_requests.append(request)
break
if add_pkg:
npackages += 1
iter = self._package_list_model.append()
self._package_list_model.set(iter,
LIST_PKG_TO_INSTALL, True,
LIST_PKG_NAME, pkg.name,
LIST_PKG_REQUEST, pkg_requests)
self._package_list_model.set_sort_column_id(LIST_PKG_NAME, gtk.SORT_ASCENDING)
self.update_ui()
dlg.destroy()
return npackages
# def _on_button_help_clicked(self, widget):
# if os.path.exists("/usr/bin/yelp"):
# subprocess.Popen(["/usr/bin/yelp", "ghelp:gnome-codec-install"])
# else:
# d = gtk.MessageDialog(parent=self.window_main,
# flags=gtk.DIALOG_MODAL,
# type=gtk.MESSAGE_ERROR,
# buttons=gtk.BUTTONS_CLOSE)
# header = _("No help available")
# msg = _("To display the help, you need to install the "
# "\"yelp\" application.")
# d.set_title("")
# d.set_markup("<big><b>%s</b></big>\n\n%s" % (header, msg))
# d.run()
# d.destroy()
def _delete_event(self, widget, event, data=None):
return False
def _destroy(self, widget, data=None):
gtk.main_quit()
def _canceled(self, widget, data=None):
self._return_code = gst.pbutils.INSTALL_PLUGINS_USER_ABORT
gtk.main_quit()
def update_ui(self):
" helper that processes all pending events "
while gtk.events_pending():
gtk.main_iteration()
def _install_selection(self, widget, data=None):
iter = self._package_list_model.get_iter_first()
packages = []
while iter:
if self._package_list_model.get_value(iter, LIST_PKG_TO_INSTALL):
packages.append((self._package_list_model.get_value(iter, LIST_PKG_NAME),
self._package_list_model.get_value(iter, LIST_PKG_REQUEST)))
iter = self._package_list_model.iter_next(iter)
if not packages or len(packages) == 0:
self.modal_dialog(gtk.MESSAGE_WARNING,
_("No packages selected"))
self._return_code = gst.pbutils.INSTALL_PLUGINS_NOT_FOUND
return
# check codec install message
if not self._confirm_codec_install(set([package[LIST_PKG_TO_INSTALL] for package in packages])):
return
worker = PackageWorker.get_worker()
install_success = worker.perform_action(self._window, set([package[LIST_PKG_TO_INSTALL] for package in packages]), set())
if install_success:
if not self._requests or len(self._requests) == 0:
self.modal_dialog(gtk.MESSAGE_INFO,
_("Packages successfully installed"),
_("The selected packages were successfully "
"installed and provided all requested plugins"))
self._return_code = gst.pbutils.INSTALL_PLUGINS_SUCCESS
else:
self.modal_dialog(gtk.MESSAGE_INFO,
_("Packages successfully installed"),
_("The selected packages were successfully "
"installed but did not provide all requested "
"plugins"))
self._return_code = gst.pbutils.INSTALL_PLUGINS_PARTIAL_SUCCESS
else:
self.modal_dialog(gtk.MESSAGE_ERROR,
_("No packages installed"),
_("None of the selected packages were installed."))
self._return_code = gst.pbutils.INSTALL_PLUGINS_ERROR
gtk.main_quit()
def _apt_lists_dir_has_missing_files(self):
""" check if sources.list contains entries that are not in
/var/lib/apt/lists - this can happen if the lists/ dir
is not fresh
Returns True if there is a file missing
"""
for metaindex in self.cache._list.list:
for m in metaindex.index_files:
if m.label == "Debian Package Index" and not m.exists:
print "Missing package list: ", m
return True
return False
def _ask_perform_update(self):
dlg = gtk.MessageDialog(None, gtk.DIALOG_MODAL,
gtk.MESSAGE_QUESTION, gtk.BUTTONS_CANCEL,
_("Update package list?"))
dlg.format_secondary_text(_("The package information is incomplete "
"and needs to be updated."))
btn = dlg.add_button(_("_Update"), gtk.RESPONSE_YES)
btn.grab_focus()
dlg.set_title("")
dlg.set_transient_for(self._window)
res = dlg.run()
dlg.destroy()
return res == gtk.RESPONSE_YES
def _show_no_codecs_error(self):
plugins = ""
for request in self._requests:
plugins += "\n" + request.description
self.modal_dialog(gtk.MESSAGE_WARNING,
_("No packages with the requested plugins found"),
_("The requested plugins are:\n") + plugins)
def main(self):
npackages = self._populate_list()
if npackages == 0:
if self._apt_lists_dir_has_missing_files():
if self._ask_perform_update():
worker = PackageWorker.get_worker()
worker.perform_update(self._window)
npackages = self._populate_list()
if npackages == 0:
self._show_no_codecs_error()
return gst.pbutils.INSTALL_PLUGINS_NOT_FOUND
else:
self._show_no_codecs_error()
return gst.pbutils.INSTALL_PLUGINS_NOT_FOUND
gtk.main()
return self._return_code
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