it.tidalwave.northernwind.core.impl.model.DefaultRequestLocaleManager.java Source code

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Here is the source code for it.tidalwave.northernwind.core.impl.model.DefaultRequestLocaleManager.java

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/*
 * #%L
 * *********************************************************************************************************************
 *
 * NorthernWind - lightweight CMS
 * http://northernwind.tidalwave.it - git clone https://bitbucket.org/tidalwave/northernwind-src.git
 * %%
 * Copyright (C) 2011 - 2016 Tidalwave s.a.s. (http://tidalwave.it)
 * %%
 * *********************************************************************************************************************
 *
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
 * an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations under the License.
 *
 * *********************************************************************************************************************
 *
 * $Id$
 *
 * *********************************************************************************************************************
 * #L%
 */
package it.tidalwave.northernwind.core.impl.model;

import javax.annotation.Nonnull;
import javax.inject.Inject;
import javax.inject.Provider;
import java.util.ArrayList;
import java.util.List;
import java.util.Locale;
import java.time.format.DateTimeFormatter;
import java.time.format.FormatStyle;
import java.time.ZoneId;
import org.springframework.beans.factory.annotation.Configurable;
import it.tidalwave.northernwind.core.model.RequestLocaleManager;
import it.tidalwave.northernwind.core.model.SiteProvider;
import it.tidalwave.northernwind.core.model.spi.RequestResettable;
import lombok.extern.slf4j.Slf4j;

/***********************************************************************************************************************
 *
 * The default implementation of {@link RequestLocaleManager}.
 *
 * @author  Fabrizio Giudici
 * @version $Id$
 *
 **********************************************************************************************************************/
@Configurable
@Slf4j
public class DefaultRequestLocaleManager implements RequestLocaleManager, RequestResettable {
    @Inject
    private Provider<SiteProvider> siteProvider;

    private final ThreadLocal<Locale> localeHolder = new ThreadLocal<>();

    /*******************************************************************************************************************
     *
     * {@inheritDoc}
     *
     ******************************************************************************************************************/
    @Override
    @Nonnull
    public List<Locale> getLocales() {
        final Locale requestLocale = localeHolder.get();
        final List<Locale> locales = new ArrayList<>(siteProvider.get().getSite().getConfiguredLocales());

        if (requestLocale != null) {
            locales.remove(requestLocale);
            locales.add(0, requestLocale);
        }

        log.debug(">>>> locales: {}", locales);

        return locales;
    }

    /*******************************************************************************************************************
     *
     * {@inheritDoc}
     *
     ******************************************************************************************************************/
    @Override
    @Nonnull
    public List<String> getLocaleSuffixes() {
        final List<String> suffixes = new ArrayList<>();
        suffixes.add("");

        for (final Locale locale : getLocales()) {
            suffixes.add("_" + locale.getLanguage());
        }

        return suffixes;
    }

    /*******************************************************************************************************************
     *
     *
     ******************************************************************************************************************/
    public void setRequestLocale(final @Nonnull Locale locale) {
        log.debug("setRequestLocale({})", locale);
        localeHolder.set(locale);
    }

    /*******************************************************************************************************************
     *
     * {@inheritDoc}
     *
     ******************************************************************************************************************/
    @Override
    public void requestReset() {
        localeHolder.remove();
    }

    /*******************************************************************************************************************
     *
     * {@inheritDoc}
     *
     ******************************************************************************************************************/
    @Override
    @Nonnull
    public DateTimeFormatter getDateTimeFormatter() {
        return DateTimeFormatter.ofLocalizedDateTime(FormatStyle.FULL).withLocale(getLocales().get(0))
                .withZone(ZoneId.systemDefault());
    }
}