001/*
002 *  Copyright 2015 Anyware Services
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 */
016package org.ametys.core.util;
017
018import java.util.Comparator;
019
020import org.ametys.runtime.i18n.I18nizableText;
021
022/**
023 * Sort I18nizableText with their translation
024 */
025public class I18nizableTextComparator implements Comparator<I18nizableText>
026{
027    private I18nUtils _i18nUtils;
028
029    /**
030     * Constructor.
031     * @param i18nUtils the {@link I18nUtils} for actual translations.
032     */
033    public I18nizableTextComparator(I18nUtils i18nUtils)
034    {
035        _i18nUtils = i18nUtils;
036    }
037
038    @Override
039    public int compare(I18nizableText t1, I18nizableText t2)
040    {
041        String s1 = _i18nUtils.translate(t1);
042        String s2 = _i18nUtils.translate(t2);
043        
044        if (s1 != null && s2 != null)
045        {
046            return _i18nUtils.translate(t1).compareTo(_i18nUtils.translate(t2));
047        }
048        else if (s1 == null && s2 == null)
049        {
050            return 0;
051        }
052        else if (s1 != null)
053        {
054            // s2 is null
055            return 1;
056        }
057        else
058        {
059            // s1 is null
060            return -1;
061        }
062    }
063}