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# -*- coding: utf-8 -*-
# Copyright (c) 2011, Walter Bender
# Ported to gtk 3: Ignacio RodrÃguez
# <ignaciorodriguez@sugarlabs.org>
# 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 3 of the License, or
# (at your option) any later version.
#
# You should have received a copy of the GNU General Public License
# along with this library; if not, write to the Free Software
# Foundation, 51 Franklin Street, Suite 500 Boston, MA 02110-1335 USA
from gi.repository import Gtk
from sugar.graphics.objectchooser import ObjectChooser
from StringIO import StringIO
import json
json.dumps
from json import load as jload
from json import dump as jdump
def json_load(text):
""" Load JSON data using what ever resources are available. """
# strip out leading and trailing whitespace, nulls, and newlines
io = StringIO(text)
try:
listdata = jload(io)
except ValueError:
# assume that text is ascii list
listdata = text.split()
for i, value in enumerate(listdata):
listdata[i] = int(value)
return listdata
def json_dump(data):
""" Save data using available JSON tools. """
_io = StringIO()
jdump(data, _io)
return _io.getvalue()
def chooser(parent_window, filter, action):
""" Choose an object from the datastore and take some action """
chooser = None
try:
chooser = ObjectChooser(parent=parent_window, what_filter=filter)
except TypeError:
chooser = ObjectChooser(None, parent_window,
Gtk.DialogFlags.MODAL | Gtk.DialogFlags.DESTROY_WITH_PARENT)
if chooser is not None:
try:
result = chooser.run()
if result == Gtk.ResponseType.ACCEPT:
dsobject = chooser.get_selected_object()
action(dsobject)
dsobject.destroy()
finally:
chooser.destroy()
del chooser
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