001/*
002 * (C) Copyright 2012 Nuxeo SA (http://nuxeo.com/) and others.
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 *     http://www.apache.org/licenses/LICENSE-2.0
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 *
016 * Contributors:
017 *     Sun Seng David TAN <[email protected]>
018 */
019package org.nuxeo.ecm.platform.web.common.locale;
020
021import java.util.List;
022import java.util.Locale;
023import java.util.TimeZone;
024
025import org.apache.commons.lang3.LocaleUtils;
026import org.apache.commons.lang3.StringUtils;
027import org.nuxeo.ecm.core.api.CoreSession;
028import org.nuxeo.ecm.core.api.DocumentModel;
029import org.nuxeo.ecm.platform.ui.web.auth.LoginScreenHelper;
030import org.nuxeo.ecm.platform.ui.web.auth.service.LoginScreenConfig;
031
032/**
033 * Provides the default locale and timezone from the server.
034 *
035 * @since 5.6
036 */
037public class DefaultLocaleProvider implements LocaleProvider {
038
039    @Override
040    public Locale getLocale(CoreSession repo) {
041        return getLocaleWithDefault(repo);
042    }
043
044    @Override
045    public Locale getLocale(DocumentModel userProfileDoc) {
046        return getLocaleWithDefault(userProfileDoc);
047    }
048
049    @Override
050    public TimeZone getTimeZone(CoreSession repo) {
051        return getDefaultTimezone();
052    }
053
054    @Override
055    public Locale getLocaleWithDefault(CoreSession session) {
056        return getDefaultLocale();
057    }
058
059    @Override
060    public Locale getLocaleWithDefault(DocumentModel userProfileDoc) {
061        return getDefaultLocale();
062    }
063
064    @Override
065    public Locale getLocaleWithDefault(String requestedLocale) {
066        Locale res = null;
067        LoginScreenConfig screenConfig = LoginScreenHelper.getConfig();
068        if (screenConfig != null) {
069            List<String> supported = screenConfig.getSupportedLocales();
070            if (!StringUtils.isBlank(requestedLocale) && supported.contains(requestedLocale)) {
071                res = LocaleUtils.toLocale(requestedLocale);
072            } else {
073                res = LocaleUtils.toLocale(screenConfig.getDefaultLocale());
074            }
075        }
076        if (res == null) {
077            return Locale.getDefault();
078        }
079        return res;
080    }
081
082    protected Locale getDefaultLocale() {
083        return getLocaleWithDefault((String) null);
084    }
085
086    protected TimeZone getDefaultTimezone() {
087        return TimeZone.getDefault();
088    }
089
090}