#! /usr/bin/env python3
# -*- coding: utf-8 -*-
# Copyright 2011, 2013, Marten de Vries
# Copyright 2012, Milan Boers
#
# This file is part of OpenTeacher.
#
# OpenTeacher 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.
#
# OpenTeacher 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 OpenTeacher. If not, see <http://www.gnu.org/licenses/>.
import gettext
import locale
import os
class TranslatorModule:
def __init__(self, moduleManager, *args, **kwargs):
super().__init__(*args, **kwargs)
self._mm = moduleManager
self.type = "translator"
self.requires = (
self._mm.mods(type="event"),
)
self.uses = (
self._mm.mods(type="settings"),
)
self.filesWithTranslations = ("translator.py",)
def enable(self):
self._modules = set(self._mm.mods(type="modules")).pop()
createEvent = self._modules.default(type="event").createEvent
self.languageChanged = createEvent()
self.languageChangeDone = createEvent()
try:
settings = self._modules.default(type="settings")
except IndexError as e:
self._languageSetting = {
"value": None,
}
else:
self._languageSetting = settings.registerSetting(**{
"internal_name": "org.openteacher.translator.language",
"type": "language",
"defaultValue": None,
"callback": {
"args": ("active",),
"kwargs": {"type": "translator"},
"method": "sendLanguageChanged",
}
})
#add the setting name, which needs to be translated itself
self._retranslate()
#subscribe this module's _retranslate to itself
self.languageChanged.handle(self._retranslate)
self.active = True
def _retranslate(self):
_, ngettext = self.gettextFunctions(
self._mm.resourcePath("translations")
)
self._languageSetting.update({
"name": _("Language"),
"category": _("General"),
"subcategory": _("Locale"),
})
def sendLanguageChanged(self):
"""A wrapper method called by the setting callback, which can't
call the send() methods directly
"""
self.languageChanged.send()
self.languageChangeDone.send()
@property
def language(self):
lang = self._languageSetting["value"]
if not lang:
return locale.getdefaultlocale()[0] or "C"
return lang
@language.setter
def language(self, lang):
self._languageSetting["value"] = lang
self.sendLanguageChanged()
def gettextFunctions(self, localeDir, language=None):
if not language:
#Try to fill it
language = self.language
path = os.path.join(localeDir, language + ".mo")
if not os.path.isfile(path):
path = os.path.join(localeDir, language.split("_")[0] + ".mo")
if os.path.isfile(path):
with open(path, "rb") as f:
t = gettext.GNUTranslations(f)
return t.gettext, t.ngettext
#Couldn't find a mo file. Return the default translator
gettextFallback = str
def ngettextFallback(x, y, n):
if n == 1:
return str(x)
else:
return str(y)
return gettextFallback, ngettextFallback
def disable(self):
self.active = False
del self._modules
del self.languageChanged
del self.languageChangeDone
del self._languageSetting
def init(moduleManager):
return TranslatorModule(moduleManager)