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# -*- coding: utf-8 -*-
# Copyright (c) 2011, Walter Bender
# 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
import gtk
from sugar.graphics.objectchooser import ObjectChooser
from StringIO import StringIO
try:
USING_JSON_READWRITE = False
import json
json.dumps
from json import load as jload
from json import dump as jdump
except (ImportError, AttributeError):
try:
import simplejson as json
from simplejson import load as jload
from simplejson import dump as jdump
except (ImportError, AttributeError):
USING_JSON_READWRITE = True
def json_load(text):
""" Load JSON data using what ever resources are available. """
if USING_JSON_READWRITE is True:
listdata = json.read(text)
else:
# 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. """
if USING_JSON_READWRITE is True:
return json.write(data)
else:
_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.DIALOG_MODAL | gtk.DIALOG_DESTROY_WITH_PARENT)
if chooser is not None:
try:
result = chooser.run()
if result == gtk.RESPONSE_ACCEPT:
dsobject = chooser.get_selected_object()
action(dsobject)
dsobject.destroy()
finally:
chooser.destroy()
del chooser
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