ColorService.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.gru.utils;

import fr.paris.lutece.portal.service.util.AppPropertiesService;

import java.util.ArrayList;
import java.util.List;
import java.util.StringTokenizer;

/**
 * ColorService
 */
public final class ColorService
{
    private static final String PROPERTY_COLORS_LIST = "gru.colors.list";
    private final List<String> _listColors;

    /**
     * Private constructor
     */
    private ColorService( )
    {
        _listColors = new ArrayList<String>( );

        String strColors = AppPropertiesService.getProperty( PROPERTY_COLORS_LIST );
        StringTokenizer stringTokenizer = new StringTokenizer( strColors, "," );

        while ( stringTokenizer.hasMoreTokens( ) )
        {
            _listColors.add( stringTokenizer.nextToken( ).trim( ) );
        }
    }

    /**
     * Gives the list of colors
     * 
     * @return the list of colors
     */
    public static List<String> getColorList( )
    {
        return ColorServiceHolder._instance._listColors;
    }

    /**
     * This class holds the {@code ColorService} instance
     *
     */
    private static class ColorServiceHolder
    {
        private static final ColorService _instance = new ColorService( );
    }
}