/*
* This file is part of LibrePlan
*
* Copyright (C) 2009-2010 Fundación para o Fomento da Calidade Industrial e
* Desenvolvemento Tecnolóxico de Galicia
* Copyright (C) 2010-2011 Igalia, S.L.
* Copyright (C) 2011 ComtecSF, S.L.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 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 Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package org.libreplan.web;
import java.util.HashMap;
import java.util.Locale;
import javax.servlet.http.HttpSession;
import org.libreplan.business.users.entities.User;
import org.xnap.commons.i18n.I18n;
import org.xnap.commons.i18n.I18nFactory;
import org.zkoss.util.Locales;
import org.zkoss.web.servlet.Charsets;
import org.zkoss.zk.ui.Execution;
import org.zkoss.zk.ui.Executions;
public class I18nHelper {
private static Locale defaultLang = Locale.ENGLISH;
private static HashMap<Locale, I18n> localesCache = new HashMap<>();
private I18nHelper() {
}
public static I18n getI18n() {
setPreferredLocale();
Locale locale = Locales.getCurrent();
if ( localesCache.keySet().contains(locale) ) {
return localesCache.get(locale);
}
I18n i18n = I18nFactory.getI18n(I18nHelper.class, locale, org.xnap.commons.i18n.I18nFactory.FALLBACK);
// The language returned is not the same as the requested by the user
if ( !locale.getLanguage().equals(i18n.getResources().getLocale().getLanguage()) ) {
// Force it to be default language
i18n = getDefaultI18n();
}
localesCache.put(Locales.getCurrent(), i18n);
return i18n;
}
private static void setPreferredLocale() {
Execution execution = Executions.getCurrent();
if ( execution != null ) {
Locale userLocale = getUserLocale();
Charsets.setPreferredLocale((HttpSession) execution.getSession().getNativeSession(), userLocale);
if ( userLocale != null ) {
Locales.setThreadLocal(userLocale);
}
}
}
private static Locale getUserLocale() {
User user = UserUtil.getUserFromSession();
return (user != null) ? user.getApplicationLanguage().getLocale() : null;
}
private static I18n getDefaultI18n() {
I18n i18n = localesCache.get(defaultLang);
if ( i18n == null ) {
i18n = I18nFactory.getI18n(I18nHelper.class, defaultLang, org.xnap.commons.i18n.I18nFactory.FALLBACK);
}
return i18n;
}
/**
* TODO It should be changed since JDK9
*
* Use of '_' as an identifier might not be supported in releases after Java SE 8.
*
* @param str
* @return Text depends on locale
*/
public static String _(String str) {
return getI18n().tr(str);
}
public static String _(String text, Object o1) {
return getI18n().tr(text, o1);
}
public static String _(String text, Object o1, Object o2) {
return getI18n().tr(text, o1, o2);
}
public static String _(String text, Object o1, Object o2, Object o3) {
return getI18n().tr(text, o1, o2, o3);
}
public static String _(String text, Object o1, Object o2, Object o3, Object o4) {
return getI18n().tr(text, o1, o2, o3, o4);
}
public static String _(String text, Object[] objects) {
return getI18n().tr(text, objects);
}
}