001/*
002 * (C) Copyright 2010 Nuxeo SA (http://nuxeo.com/) and contributors.
003 *
004 * All rights reserved. This program and the accompanying materials
005 * are made available under the terms of the GNU Lesser General Public License
006 * (LGPL) version 2.1 which accompanies this distribution, and is available at
007 * http://www.gnu.org/licenses/lgpl.html
008 *
009 * This library is distributed in the hope that it will be useful,
010 * but WITHOUT ANY WARRANTY; without even the implied warranty of
011 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
012 * Lesser General Public License for more details.
013 *
014 * Contributors:
015 *     Anahide Tchertchian
016 */
017package org.nuxeo.ecm.platform.forms.layout.api.impl;
018
019import java.util.Comparator;
020import java.util.List;
021
022import org.nuxeo.ecm.platform.forms.layout.api.LayoutRow;
023
024/**
025 * Compares selected row instances to order them in the same order that given by the input list of row names.
026 *
027 * @author Anahide Tchertchian
028 */
029public class LayoutRowComparator implements Comparator<LayoutRow> {
030
031    protected List<String> rowNames;
032
033    public LayoutRowComparator(List<String> rowNames) {
034        super();
035        this.rowNames = rowNames;
036    }
037
038    @Override
039    public int compare(LayoutRow o1, LayoutRow o2) {
040        if (rowNames == null) {
041            return 0;
042        }
043        Integer index1 = Integer.valueOf(rowNames.indexOf(o1.getName()));
044        Integer index2 = Integer.valueOf(rowNames.indexOf(o2.getName()));
045        return index1.compareTo(index2);
046    }
047}