# -*- coding: utf-8 -*-
# Copyright (c) 2011, Walter Bender
# Ported to gtk 3: Ignacio Rodríguez
# <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