001/*
002 * (C) Copyright 2010 Nuxeo SA (http://nuxeo.com/) and others.
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 *
016 * Contributors:
017 *     Anahide Tchertchian
018 */
019package org.nuxeo.ecm.platform.forms.layout.api.impl;
020
021import java.util.Comparator;
022import java.util.List;
023
024import org.nuxeo.ecm.platform.forms.layout.api.LayoutRow;
025
026/**
027 * Compares selected row instances to order them in the same order that given by the input list of row names.
028 *
029 * @author Anahide Tchertchian
030 */
031public class LayoutRowComparator implements Comparator<LayoutRow> {
032
033    protected List<String> rowNames;
034
035    public LayoutRowComparator(List<String> rowNames) {
036        super();
037        this.rowNames = rowNames;
038    }
039
040    @Override
041    public int compare(LayoutRow o1, LayoutRow o2) {
042        if (rowNames == null) {
043            return 0;
044        }
045        Integer index1 = Integer.valueOf(rowNames.indexOf(o1.getName()));
046        Integer index2 = Integer.valueOf(rowNames.indexOf(o2.getName()));
047        return index1.compareTo(index2);
048    }
049}