Source code for gramps.gui.dbman

# Gramps - a GTK+/GNOME based genealogy program
# Copyright (C) 2000-2007  Donald N. Allingham
# Copyright (C) 2009       Brian G. Matherly
# Copyright (C) 2009       Gary Burton
# 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
# 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.

Provide the management of databases. This includes opening, renaming,
creating, and deleting of databases.

# Standard python modules
import os
import sys
import time
import copy
import shutil
import subprocess
if sys.version_info[0] < 3:
    from urlparse import urlparse
    from urllib.parse import urlparse

# set up logging
import logging
LOG = logging.getLogger(".DbManager")

from gramps.gen.constfunc import win, UNITYPE, conv_to_unicode
if win():
    _RCS_FOUND = os.system("rcs -V >nul 2>nul") == 0
    if _RCS_FOUND and "TZ" not in os.environ:
        # RCS requires the "TZ" variable be set.
        os.environ["TZ"] = str(time.timezone)
    _RCS_FOUND = os.system("rcs -V >/dev/null 2>/dev/null") == 0

# GTK/Gnome modules
from gi.repository import Gdk
from gi.repository import Gtk
from gi.repository import Pango

# gramps modules
from gramps.gen.const import GRAMPS_LOCALE as glocale
_ = glocale.translation.gettext
from .user import User
from .dialog import ErrorDialog, QuestionDialog, QuestionDialog2
from gramps.gen.db import DbBsddb
from .pluginmanager import GuiPluginManager
from gramps.cli.clidbman import CLIDbManager, NAME_FILE, time_val
from .ddtargets import DdTargets
from gramps.gen.recentfiles import rename_filename, remove_filename
from .glade import Glade
from gramps.gen.db.backup import restore
from gramps.gen.db.exceptions import DbException

_RETURN = Gdk.keyval_from_name("Return")
_KP_ENTER = Gdk.keyval_from_name("KP_Enter")

# constants

ARCHIVE       = "rev.gramps"
ARCHIVE_V     = "rev.gramps,v"


RCS_BUTTON = { True : _('_Extract'), False : _('_Archive') }

[docs]class DbManager(CLIDbManager): """ Database Manager. Opens a database manager window that allows users to create, rename, delete and open databases. """ ICON_MAP = { CLIDbManager.ICON_NONE : None, CLIDbManager.ICON_RECOVERY : Gtk.STOCK_DIALOG_ERROR, CLIDbManager.ICON_LOCK : 'gramps-lock', CLIDbManager.ICON_OPEN : Gtk.STOCK_OPEN, } ERROR = ErrorDialog def __init__(self, dbstate, parent=None): """ Create the top level window from the glade description, and extracts the GTK widgets that are needed. """ CLIDbManager.__init__(self, dbstate) = Glade() = if parent: for attr in ['connect', 'cancel', 'new', 'remove', 'copy', 'dblist', 'rename', 'repair', 'rcs', 'msg']: setattr(self, attr, self.model = None self.column = None self.lock_file = None self.data_to_delete = None self.selection = self.dblist.get_selection() self.dblist.set_rules_hint(True) self.__connect_signals() self.__build_interface() self._populate_model() def __connect_signals(self): """ Connects the signals to the buttons on the interface. """ ddtarget = DdTargets.URI_LIST, [], Gdk.DragAction.COPY) tglist =[]) tglist.add(ddtarget.atom_drag_type, ddtarget.target_flags, ddtarget.app_id) self.remove.connect('clicked', self.__remove_db)'clicked', self.__new_db) self.rename.connect('clicked', self.__rename_db) self.copy.connect('clicked', self.__copy_db)'clicked', self.__repair_db) self.selection.connect('changed', self.__selection_changed) self.dblist.connect('button-press-event', self.__button_press) self.dblist.connect('key-press-event', self.__key_press)'drag_data_received', self.__drag_data_received)'drag_motion', drag_motion)'drag_drop', drop_cb) if _RCS_FOUND: self.rcs.connect('clicked', self.__rcs) def __button_press(self, obj, event): """ Checks for a double click event. In the tree view, we want to treat a double click as if it was OK button press. However, we have to make sure that an item was selected first. """ if event.type == Gdk.EventType._2BUTTON_PRESS and event.button == 1: if self.connect.get_property('sensitive'): return True return False def __key_press(self, obj, event): """ Grab ENTER so it does not start editing the cell, but behaves like double click instead """ if event.keyval in (_RETURN, _KP_ENTER): if self.connect.get_property('sensitive'): return True return False def __selection_changed(self, selection): """ Called when the selection is changed in the TreeView. """ self.__update_buttons(selection) def __update_buttons(self, selection): """ What we are trying to detect is the selection or unselection of a row. When a row is unselected, the Open, Rename, and Remove buttons are set insensitive. If a row is selected, the rename and remove buttons are disabled, and the Open button is disabled if the row represents a open database. """ # Get the current selection store, node = selection.get_selected() # if nothing is selected if not node: self.connect.set_sensitive(False) self.rename.set_sensitive(False) self.copy.set_sensitive(False) self.rcs.set_sensitive(False) self.remove.set_sensitive(False) return path = self.model.get_path(node) if path is None: return is_rev = len(path.get_indices()) > 1 self.rcs.set_label(RCS_BUTTON[is_rev]) if store.get_value(node, STOCK_COL) == Gtk.STOCK_OPEN: self.connect.set_sensitive(False) if _RCS_FOUND: self.rcs.set_sensitive(True) else: self.connect.set_sensitive(not is_rev) if _RCS_FOUND and is_rev: self.rcs.set_sensitive(True) else: self.rcs.set_sensitive(False) if store.get_value(node, STOCK_COL) == Gtk.STOCK_DIALOG_ERROR: path = conv_to_unicode(store.get_value(node, PATH_COL), 'utf8') backup = os.path.join(path, u"person.gbkp") else: self.rename.set_sensitive(True) self.copy.set_sensitive(True) self.remove.set_sensitive(True) def __build_interface(self): """ Builds the columns for the TreeView. The columns are: Icon, Database Name, Last Modified The Icon column gets its data from column 6 of the database model. It is expecting either None, or a GTK stock icon name The Database Name column is an editable column. We connect to the 'edited' signal, so that we can change the name when the user changes the column. The last accessed column simply displays the last time famtree was opened. """ # build the database name column render = Gtk.CellRendererText() render.set_property('ellipsize', Pango.EllipsizeMode.END) render.connect('edited', self.__change_name) render.connect('editing-canceled', self.__stop_edit) render.connect('editing-started', self.__start_edit) self.column = Gtk.TreeViewColumn(_('Family Tree name'), render, text=NAME_COL) self.column.set_sort_column_id(NAME_COL) self.column.set_sort_indicator(True) self.column.set_resizable(True) self.column.set_min_width(275) self.dblist.append_column(self.column) self.name_renderer = render # build the icon column render = Gtk.CellRendererPixbuf() #icon_column = Gtk.TreeViewColumn(_('Status'), render, #stock_id=STOCK_COL) icon_column = Gtk.TreeViewColumn(_('Status'), render) icon_column.set_cell_data_func(render, bug_fix) self.dblist.append_column(icon_column) # build the last accessed column render = Gtk.CellRendererText() column = Gtk.TreeViewColumn(_('Last accessed'), render, text=DATE_COL) column.set_sort_column_id(DSORT_COL) self.dblist.append_column(column) # set the rules hit self.dblist.set_rules_hint(True) def __populate(self): """ Builds the data and the display model. """ self._populate_cli() self._populate_model() def _populate_model(self): """ Builds the display model. """ self.model = Gtk.TreeStore(str, str, str, str, int, bool, str) #use current names to set up the model for items in self.current_names: data = list(items[:7]) node = self.model.append(None, data) for rdata in find_revisions(os.path.join(items[1], ARCHIVE_V)): data = [ rdata[2], rdata[0], items[1], rdata[1], 0, False, "" ] self.model.append(node, data) self.model.set_sort_column_id(NAME_COL, Gtk.SortType.ASCENDING) self.dblist.set_model(self.model)
[docs] def existing_name(self, name, skippath=None): """ Return true if a name is present in the model already. If skippath given, the name of skippath is not considered """ iter = self.model.get_iter_first() while (iter): path = self.model.get_path(iter) if path == skippath: pass else: itername = self.model.get_value(iter, NAME_COL) if itername.strip() == name.strip(): return True iter = self.model.iter_next(iter) return False
[docs] def run(self): """ Runs the dialog, returning None if nothing has been chosen, or the path and name if something has been selected """ while True: value = if value == Gtk.ResponseType.OK: store, node = self.selection.get_selected() # don't open a locked file if store.get_value(node, STOCK_COL) == 'gramps-lock': self.__ask_to_break_lock(store, node) continue # don't open a version if len(store.get_path(node).get_indices()) > 1: continue if node: del self.selection del self.name_renderer path = conv_to_unicode(store.get_value(node, PATH_COL), 'utf8') return (path, store.get_value(node, NAME_COL)) else: del self.selection del self.name_renderer return None
def __ask_to_break_lock(self, store, node): """ Prompts the user for permission to break the lock file that another process has set on the file. """ path = store.get_path(node) self.lock_file = store[path][PATH_COL] QuestionDialog( _("Break the lock on the '%s' database?") % store[path][0], _("Gramps believes that someone else is actively editing " "this database. You cannot edit this database while it " "is locked. If no one is editing the database you may " "safely break the lock. However, if someone else is editing " "the database and you break the lock, you may corrupt the " "database."), _("Break lock"), self.__really_break_lock, def __really_break_lock(self): """ Deletes the lock file associated with the selected database, then updates the display appropriately. """ try: self.break_lock(self.lock_file) store, node = self.selection.get_selected() dbpath = conv_to_unicode(store.get_value(node, PATH_COL), 'utf8') (tval, last) = time_val(dbpath) store.set_value(node, OPEN_COL, 0) store.set_value(node, STOCK_COL, "") store.set_value(node, DATE_COL, last) store.set_value(node, DSORT_COL, tval) except IOError: return def __stop_edit(self, *args): self.name_renderer.set_property('editable', False) self.__update_buttons(self.selection) def __start_edit(self, *args): """ Do not allow to click Load while changing name, to force users to finish the action of renaming. Hack around the fact that clicking button sends a 'editing-canceled' signal loosing the new name """ self.connect.set_sensitive(False) self.rename.set_sensitive(False) self.copy.set_sensitive(False) self.rcs.set_sensitive(False) self.remove.set_sensitive(False) def __change_name(self, renderer_sel, path, new_text): """ Change the name of the database. This is a callback from the column, which has been marked as editable. If the new string is empty, do nothing. Otherwise, renaming the database is simply changing the contents of the name file. """ #path is a string, convert to TreePath first path = Gtk.TreePath(path=path) if len(new_text) > 0: new_text = conv_to_unicode(new_text, 'utf8') node = self.model.get_iter(path) old_text = self.model.get_value(node, NAME_COL) if not old_text.strip() == new_text.strip(): if len(path.get_indices()) > 1 : self.__rename_revision(path, new_text) else: self.__rename_database(path, new_text) self.name_renderer.set_property('editable', False) self.__update_buttons(self.selection) def __rename_revision(self, path, new_text): """ Renames the RCS revision using the rcs command. The rcs command is in the format of: rcs -mREV:NEW_NAME archive """ node = self.model.get_iter(path) db_dir = self.model.get_value(node, FILE_COL) rev = self.model.get_value(node, PATH_COL) archive = os.path.join(db_dir, ARCHIVE_V) cmd = [ "rcs", "-x,v", "-m%s:%s" % (rev, new_text), archive ] proc = subprocess.Popen(cmd, stderr = subprocess.PIPE) status = proc.wait() message = "\n".join(proc.stderr.readlines()) proc.stderr.close() del proc if status != 0: DbManager.ERROR( _("Rename failed"), _("An attempt to rename a version failed " "with the following message:\n\n%s") % message ) else: self.model.set_value(node, NAME_COL, new_text) #scroll to new position store, node = self.selection.get_selected() tree_path = store.get_path(node) self.dblist.scroll_to_cell(tree_path, None, False, 0.5, 0.5) def __rename_database(self, path, new_text): """ Renames the database by writing the new value to the name.txt file """ new_text = new_text.strip() node = self.model.get_iter(path) filename = self.model.get_value(node, FILE_COL) if self.existing_name(new_text, skippath=path): DbManager.ERROR(_("Could not rename the Family Tree."), _("Family Tree already exists, choose a unique name.")) return old_text, new_text = self.rename_database(filename, new_text) if not (old_text is None): rename_filename(old_text, new_text) self.model.set_value(node, NAME_COL, new_text) #scroll to new position store, node = self.selection.get_selected() tree_path = store.get_path(node) self.dblist.scroll_to_cell(tree_path, None, False, 0.5, 0.5) def __rcs(self, obj): """ Callback for the RCS button. If the tree path is > 1, then we are on an RCS revision, in which case we can check out. If not, then we can only check in. """ store, node = self.selection.get_selected() tree_path = store.get_path(node) if len(tree_path.get_indices()) > 1: parent_node = store.get_iter((tree_path[0],)) parent_name = store.get_value(parent_node, NAME_COL) name = store.get_value(node, NAME_COL) revision = store.get_value(node, PATH_COL) db_path = store.get_value(node, FILE_COL) self.__checkout_copy(parent_name, name, revision, db_path) else: base_path = self.dbstate.db.get_save_path() archive = os.path.join(base_path, ARCHIVE) check_in(self.dbstate.db, archive, User(), self.__start_cursor) self.__end_cursor() self.__populate() def __checkout_copy(self, parent_name, name, revision, db_path): """ Create a new database, then extracts a revision from RCS and imports it into the db """ new_path, newname = self._create_new_db("%s : %s" % (parent_name, name)) self.__start_cursor(_("Extracting archive...")) dbclass = DbBsddb dbase = dbclass() dbase.load(new_path, None) self.__start_cursor(_("Importing archive...")) check_out(dbase, revision, db_path, User()) self.__end_cursor() dbase.close() def __remove_db(self, obj): """ Callback associated with the Remove button. Get the selected row and data, then call the verification dialog. """ store, node = self.selection.get_selected() path = store.get_path(node) self.data_to_delete = store[path] if len(path.get_indices()) == 1: QuestionDialog( _("Remove the '%s' Family Tree?") % self.data_to_delete[0], _("Removing this Family Tree will permanently destroy the data."), _("Remove Family Tree"), self.__really_delete_db) else: rev = self.data_to_delete[0] parent = store[(path[0],)][0] QuestionDialog( _("Remove the '%(revision)s' version of '%(database)s'") % { 'revision' : rev, 'database' : parent }, _("Removing this version will prevent you from " "extracting it in the future."), _("Remove version"), self.__really_delete_version) def __really_delete_db(self): """ Delete the selected database. If the database is open, close it first. Then scan the database directory, deleting the files, and finally removing the directory. """ # close the database if the user has requested to delete the # active database if self.data_to_delete[PATH_COL] == self.dbstate.no_database() store, node = self.selection.get_selected() path = store.get_path(node) node = self.model.get_iter(path) filename = conv_to_unicode(self.model.get_value(node, FILE_COL), 'utf8') try: name_file = open(filename, "r") name_file.close() remove_filename(file_name_to_delete) directory = conv_to_unicode(self.data_to_delete[1], 'utf8') for (top, dirs, files) in os.walk(directory): for filename in files: os.unlink(os.path.join(top, filename)) os.rmdir(directory) except (IOError, OSError) as msg: DbManager.ERROR(_("Could not delete Family Tree"), str(msg)) # rebuild the display self.__populate() def __really_delete_version(self): """ Delete the selected database. If the database is open, close it first. Then scan the database directory, deleting the files, and finally removing the directory. """ db_dir = self.data_to_delete[FILE_COL] rev = self.data_to_delete[PATH_COL] archive = os.path.join(db_dir, ARCHIVE_V) cmd = [ "rcs", "-x,v", "-o%s" % rev, "-q", archive ] proc = subprocess.Popen(cmd, stderr = subprocess.PIPE) status = proc.wait() message = "\n".join(proc.stderr.readlines()) proc.stderr.close() del proc if status != 0: DbManager.ERROR( _("Deletion failed"), _("An attempt to delete a version failed " "with the following message:\n\n%s") % message ) # rebuild the display self.__populate() def __rename_db(self, obj): """ Start the rename process by calling the start_editing option on the line with the cursor. """ store, node = self.selection.get_selected() path = self.model.get_path(node) self.name_renderer.set_property('editable', True) self.dblist.set_cursor(path, self.column, True) def __copy_db(self, obj): """ Copy the database through low-level file copies. """ # First, get the selected tree: store, node = self.selection.get_selected() # New title: date_string = time.strftime("%d %b %Y %H:%M:%S", time.gmtime()) title = _("%s (copy, %s)") % (store[node][NAME_COL], date_string) # Create the row and directory, awaits user edit of title: (new_dir, title) = self._create_new_db(title, create_db=False) # Copy the files: name_file = conv_to_unicode(store[node][FILE_COL], 'utf8') old_dir = os.path.dirname(name_file) for filename in os.listdir(old_dir): if filename == "name.txt": continue old_file = os.path.abspath(os.path.join(old_dir, filename)) shutil.copy2(old_file, new_dir) def __repair_db(self, obj): """ Start the repair process by calling the start_editing option on the line with the cursor. """ store, node = self.selection.get_selected() dirname = store[node][1] #First ask user if he is really sure :-) yes_no = QuestionDialog2( _("Repair Family Tree?"), _( "If you click <b>Proceed</b>, Gramps will attempt to recover your Family Tree" " from the last good backup. There are several ways this can cause unwanted" " effects, so <b>backup</b> the Family Tree first.\n" "The Family Tree you have selected is stored in %s.\n\n" "Before doing a repair, verify that the Family Tree can really no longer be " " opened, as the database back-end can recover from some errors automatically.\n\n" "<b>Details:</b> Repairing a Family Tree actually uses the last backup of" " the Family Tree, which Gramps stored on last use. If you have worked for" " several hours/days without closing Gramps, then all this information will" " be lost! If the repair fails, then the original Family Tree will be lost" " forever, hence a backup is needed. If the repair fails, or too much" " information is lost, you can fix the original Family Tree manually." " For details, see the webpage\n" "\n" "Before doing a repair, try to open the Family Tree in the normal manner." " Several errors that trigger the repair button can be fixed automatically." " If this is the case, you can disable the repair button by removing the" " file <i>need_recover</i> in the Family Tree directory." ) % dirname, _("Proceed, I have taken a backup"), _("Stop")) prompt = if not prompt: return opened = store[node][OPEN_COL] if opened: self.dbstate.no_database() # delete files that are not backup files or the .txt file for filename in os.listdir(dirname): if os.path.splitext(filename)[1] not in (".gbkp", ".txt"): fname = os.path.join(dirname, filename) os.unlink(fname) newdb = DbBsddb() newdb.write_version(dirname) dbclass = DbBsddb dbase = dbclass() dbase.set_save_path(dirname) dbase.load(dirname, None) self.__start_cursor(_("Rebuilding database from backup files")) try: restore(dbase) except DbException as msg: DbManager.ERROR(_("Error restoring backup data"), msg) self.__end_cursor() dbase.close() self.dbstate.no_database() self.__populate() def __start_cursor(self, msg): """ Set the cursor to the busy state, and displays the associated message """ self.msg.set_label(msg) while (Gtk.events_pending()): Gtk.main_iteration() def __end_cursor(self): """ Set the cursor back to normal and clears the message """ self.msg.set_label("") def __new_db(self, obj): """ Callback wrapper around the actual routine that creates the new database. Catch OSError and IOError and display a warning message. """ try: self._create_new_db() except (OSError, IOError) as msg: DbManager.ERROR(_("Could not create Family Tree"), str(msg)) def _create_new_db(self, title=None, create_db=True): """ Create a new database, append to model """ new_path, title = self.create_new_db_cli(conv_to_unicode(title, 'utf8'), create_db) path_name = os.path.join(new_path, NAME_FILE) (tval, last) = time_val(new_path) node = self.model.append(None, [title, new_path, path_name, last, tval, False, '']) self.selection.select_iter(node) path = self.model.get_path(node) self.name_renderer.set_property('editable', True) self.dblist.set_cursor(path, self.column, True) return new_path, title def __drag_data_received(self, widget, context, xpos, ypos, selection, info, rtime): """ Handle the reception of drag data """ drag_value = selection.get_data() fname = None type = None title = None # Allow any type of URL ("file://", "http://", etc): if drag_value and urlparse(drag_value).scheme != "": fname, title = [], [] for treename in [v.strip() for v in drag_value.split("\n") if v.strip() != '']: f, t = self.import_new_db(treename, User()) fname.append(f) title.append(t) return fname, title
def drag_motion(wid, context, xpos, ypos, time_stamp): """ DND callback that is called on a DND drag motion begin """ Gdk.drag_status(context, Gdk.DragAction.COPY, time_stamp) return True def drop_cb(wid, context, xpos, ypos, time_stamp): """ DND callback that finishes the DND operation """ Gtk.drag_finish(context, True, False, time_stamp) return True def find_revisions(name): """ Finds all the revisions of the specified RCS archive. """ import re rev = re.compile("\s*revision\s+([\d\.]+)") date = re.compile("date:\s+(\d\d\d\d-\d\d-\d\d \d\d:\d\d:\d\d)[-+]\d\d;") if not os.path.isfile(name) or not _RCS_FOUND: return [] rlog = [ "rlog", "-x,v", "-zLT" , name ] proc = subprocess.Popen(rlog, stdout = subprocess.PIPE) proc.wait() revlist = [] date_str = "" rev_str = "" com_str = "" get_next = False if os.path.isfile(name): for line in proc.stdout: if sys.version_info[0] >= 3 and not isinstance(line, UNITYPE): # we assume utf-8 ... line = line.decode('utf-8') match = rev.match(line) if match: rev_str = copy.copy(match.groups()[0]) continue match = date.match(line) if match: date_str = time.strftime('%x %X', time.strptime(match.groups()[0], '%Y-%m-%d %H:%M:%S')) get_next = True continue if get_next: get_next = False com_str = line.strip() revlist.append((rev_str, date_str, com_str)) proc.stdout.close() del proc return revlist def check_out(dbase, rev, path, user): """ Checks out the revision from rcs, and loads the resulting XML file into the database. """ co_cmd = [ "co", "-x,v", "-q%s" % rev] + [ os.path.join(path, ARCHIVE), os.path.join(path, ARCHIVE_V)] proc = subprocess.Popen(co_cmd, stderr = subprocess.PIPE) status = proc.wait() message = "\n".join(proc.stderr.readlines()) proc.stderr.close() del proc if status != 0: user.notify_error( _("Retrieve failed"), _("An attempt to retrieve the data failed " "with the following message:\n\n%s") % message ) return pmgr = GuiPluginManager.get_instance() for plugin in pmgr.get_import_plugins(): if plugin.get_extension() == "gramps": rdr = plugin.get_import_function() xml_file = os.path.join(path, ARCHIVE) rdr(dbase, xml_file, user) os.unlink(xml_file) def check_in(dbase, filename, user, cursor_func = None): """ Checks in the specified file into RCS """ init = [ "rcs", '-x,v', '-i', '-U', '-q', '-t-"Gramps database"' ] ci_cmd = [ "ci", '-x,v', "-q", "-f" ] archive_name = filename + ",v" glade = Glade(toplevel='comment') top = glade.toplevel text = glade.get_object('description') comment = text.get_text() top.destroy() if not os.path.isfile(archive_name): cmd = init + [archive_name] proc = subprocess.Popen(cmd, stderr = subprocess.PIPE) status = proc.wait() message = "\n".join(proc.stderr.readlines()) proc.stderr.close() del proc if status != 0: ErrorDialog( _("Archiving failed"), _("An attempt to create the archive failed " "with the following message:\n\n%s") % message ) if cursor_func: cursor_func(_("Creating data to be archived...")) plugin_manager = GuiPluginManager.get_instance() for plugin in plugin_manager.get_export_plugins(): if plugin.get_extension() == "gramps": export_function = plugin.get_export_function() export_function(dbase, filename, user) if cursor_func: cursor_func(_("Saving archive...")) cmd = ci_cmd + ['-m%s' % comment, filename, archive_name ] proc = subprocess.Popen(cmd, stderr = subprocess.PIPE) status = proc.wait() message = "\n".join(proc.stderr.readlines()) proc.stderr.close() del proc if status != 0: ErrorDialog( _("Archiving failed"), _("An attempt to archive the data failed " "with the following message:\n\n%s") % message ) def bug_fix(column, renderer, model, iter_, data): """ Cell data function to set the status column. There is a bug in pygobject which prevents us from setting a value to None using the TreeModel set_value method. Instead we set it to an empty string and convert it to None here. """ stock_id = model.get_value(iter_, STOCK_COL) if stock_id == '': stock_id = None renderer.set_property('stock_id', stock_id)