LanguageService.java

/*
 * Copyright (c) 2002-2017, Mairie de Paris
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 *  1. Redistributions of source code must retain the above copyright notice
 *     and the following disclaimer.
 *
 *  2. Redistributions in binary form must reproduce the above copyright notice
 *     and the following disclaimer in the documentation and/or other materials
 *     provided with the distribution.
 *
 *  3. Neither the name of 'Mairie de Paris' nor 'Lutece' nor the names of its
 *     contributors may be used to endorse or promote products derived from
 *     this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 *
 * License 1.0
 */

package fr.paris.lutece.plugins.recastbots.service;

import fr.paris.lutece.portal.service.util.AppPropertiesService;
import fr.paris.lutece.util.ReferenceList;
import java.util.HashMap;
import java.util.Locale;
import java.util.Map;

/**
 * LanguageService
 */
public class LanguageService
{
    private static final String PROPERTY_LANGUAGES = "recastbots.languages";

    private static Map<String, ReferenceList> _mapLanguages = new HashMap<>( );

    /**
     * Gets a list of available languages
     * 
     * @param locale
     *            The display language
     * @return The list
     */
    public static ReferenceList getLanguages( Locale locale )
    {
        String strLanguage = locale.getLanguage( );
        ReferenceList list = _mapLanguages.get( strLanguage );
        if ( list == null )
        {
            String [ ] languages = AppPropertiesService.getProperty( PROPERTY_LANGUAGES ).split( "," );
            list = new ReferenceList( );
            for ( String strLang : languages )
            {
                for ( Locale loc : Locale.getAvailableLocales( ) )
                {
                    if ( strLang.equalsIgnoreCase( loc.getLanguage( ) ) )
                    {
                        list.addItem( strLang, loc.getDisplayLanguage( locale ) );
                        break;
                    }
                }
            }
            _mapLanguages.put( strLanguage, list );
        }
        return list;
    }
}