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# Copyright (C) 2008, OLPC
# Copyright (C) 2009, Simon Schampijer
#
# 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
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# 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 St, Fifth Floor, Boston, MA 02110-1301 USA
import gtk
import gobject
import gettext
from sugar.graphics import style
from sugar.graphics.icon import Icon
from jarabe.controlpanel.sectionview import SectionView
from jarabe.controlpanel.inlinealert import InlineAlert
_translate_language = lambda msg: gettext.dgettext('iso_639', msg)
_translate_country = lambda msg: gettext.dgettext('iso_3166', msg)
CLASS = 'Language'
ICON = 'module-language'
TITLE = gettext.gettext('Language')
class Language(SectionView):
def __init__(self, model, alerts):
SectionView.__init__(self)
self._model = model
self.restart_alerts = alerts
self._lang_sid = 0
self._selected_lang_count = 0
self._labels = []
self._stores = []
self._comboboxes = []
self._add_remove_boxes = []
self._changed = False
self._cursor_change_handler = None
self._available_locales = self._model.read_all_languages()
self._selected_locales = self._model.get_languages()
self.set_border_width(style.DEFAULT_SPACING * 2)
self.set_spacing(style.DEFAULT_SPACING)
explanation = gettext.gettext("Add languages in the order you prefer." \
" If a translation is not available,"\
" the next in the list will be used.")
self._text = gtk.Label(explanation)
self._text.set_alignment(0, 0)
self.pack_start(self._text, False)
self._text.show()
self._table = gtk.Table(rows=1, columns=3, homogeneous=False)
self.pack_start(self._table, False)
self._table.show()
self._lang_alert_box = gtk.HBox(spacing=style.DEFAULT_SPACING)
self.pack_start(self._lang_alert_box, False)
self._lang_alert = InlineAlert()
self._lang_alert_box.pack_start(self._lang_alert)
if 'lang' in self.restart_alerts:
self._lang_alert.props.msg = self.restart_msg
self._lang_alert.show()
self._lang_alert_box.show()
self.setup()
def _add_row(self, locale_code=None):
'''Adds a row to the table'''
self._selected_lang_count += 1
self._table.resize(self._selected_lang_count, 3)
label = gtk.Label(str=str(self._selected_lang_count))
self._labels.append(label)
self._attach_to_table(label, 0, 1, padding=1)
label.show()
store = gtk.ListStore(gobject.TYPE_STRING, gobject.TYPE_STRING)
for language, country, code in self._available_locales:
description = '%s (%s)' % (_translate_language(language), \
_translate_country(country))
store.append([code, description])
combobox = gtk.ComboBox(model=store)
cell = gtk.CellRendererText()
combobox.pack_start(cell)
combobox.add_attribute(cell, 'text', 1)
if locale_code:
for row in store:
lang = locale_code.split('.')[0]
lang_column = row[0].split('.')[0]
if lang in lang_column:
combobox.set_active_iter(row.iter)
break
else:
combobox.set_active(1)
combobox.connect('changed', self.__combobox_changed_cb)
self._stores.append(store)
self._comboboxes.append(combobox)
self._attach_to_table(combobox, 1, 2, yoptions=gtk.SHRINK)
add_remove_box = self._create_add_remove_box()
self._add_remove_boxes.append(add_remove_box)
self._attach_to_table(add_remove_box, 2, 3)
add_remove_box.show_all()
if self._selected_lang_count > 1:
previous_add_removes = self._add_remove_boxes[-2]
previous_add_removes.hide_all()
self._determine_add_remove_visibility()
combobox.show()
def _attach_to_table(self, widget, row, column, padding=20, \
yoptions=gtk.FILL):
self._table.attach(widget, row, column, \
self._selected_lang_count - 1, self._selected_lang_count, \
xoptions=gtk.FILL, yoptions=yoptions, xpadding=padding, \
ypadding=padding)
def _delete_last_row(self):
'''Deletes the last row of the table'''
self._selected_lang_count -= 1
label, add_remove_box, combobox, store_ = self._get_last_row()
label.destroy()
add_remove_box.destroy()
combobox.destroy()
self._table.resize(self._selected_lang_count, 3)
self._add_remove_boxes[-1].show_all()
def _get_last_row(self):
label = self._labels.pop()
add_remove_box = self._add_remove_boxes.pop()
combobox = self._comboboxes.pop()
store = self._stores.pop()
return label, add_remove_box, combobox, store
def setup(self):
for locale in self._selected_locales:
self._add_row(locale_code=locale)
def undo(self):
self._model.undo()
self._lang_alert.hide()
def _create_add_remove_box(self):
'''Creates gtk.Hbox with add/remove buttons'''
add_icon = Icon(icon_name='list-add')
add_button = gtk.Button()
add_button.set_image(add_icon)
add_button.connect('clicked',
self.__add_button_clicked_cb)
remove_icon = Icon(icon_name='list-remove')
remove_button = gtk.Button()
remove_button.set_image(remove_icon)
remove_button.connect('clicked',
self.__remove_button_clicked_cb)
add_remove_box = gtk.HButtonBox()
add_remove_box.set_layout(gtk.BUTTONBOX_START)
add_remove_box.set_spacing(10)
add_remove_box.pack_start(add_button)
add_remove_box.pack_start(remove_button)
return add_remove_box
def __add_button_clicked_cb(self, button):
self._add_row()
self._check_change()
def __remove_button_clicked_cb(self, button):
self._delete_last_row()
self._check_change()
def __combobox_changed_cb(self, button):
self._check_change()
def _check_change(self):
selected_langs = self._get_selected_langs()
last_lang = selected_langs[-1]
self._determine_add_remove_visibility(last_lang = last_lang)
self._changed = (selected_langs != self._selected_locales)
if self._changed == False:
# The user reverted back to the original config
self.needs_restart = False
if 'lang' in self.restart_alerts:
self.restart_alerts.remove('lang')
self._lang_alert.hide()
if self._lang_sid:
gobject.source_remove(self._lang_sid)
self._model.undo()
return False
if self._lang_sid:
gobject.source_remove(self._lang_sid)
self._lang_sid = gobject.timeout_add(self._APPLY_TIMEOUT,
self.__lang_timeout_cb,
selected_langs)
def _get_selected_langs(self):
new_codes = []
for combobox in self._comboboxes:
it = combobox.get_active_iter()
model = combobox.get_model()
lang_code = model.get(it, 0)[0]
new_codes.append(lang_code)
return new_codes
def _determine_add_remove_visibility(self, last_lang = None):
# We should not let users add fallback languages for English (USA)
# This is because the software is not usually _translated_ into English
# which means that the fallback gets selected automatically
if last_lang is None:
selected_langs = self._get_selected_langs()
last_lang = selected_langs[-1]
add_remove_box = self._add_remove_boxes[-1]
buttons = add_remove_box.get_children()
add_button, remove_button = buttons
if last_lang.startswith('en_US'):
add_button.props.visible = False
else:
add_button.props.visible = True
if self._selected_lang_count == 1:
remove_button.props.visible = False
else:
remove_button.props.visible = True
def __lang_timeout_cb(self, codes):
self._lang_sid = 0
self._model.set_languages(codes)
self.restart_alerts.append('lang')
self.needs_restart = True
self._lang_alert.props.msg = self.restart_msg
self._lang_alert.show()
return False
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