001/*
002 *  Copyright 2012 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 */
016
017package org.ametys.core.util.dom;
018
019import java.util.List;
020
021import org.w3c.dom.Node;
022import org.w3c.dom.NodeList;
023
024/**
025 * Simple implementation of {@link NodeList} backed by a {@link List}.
026 */
027public class AmetysNodeList implements NodeList
028{
029    private List<? extends Node> _list;
030    
031    /**
032     * Constructor.
033     * @param list the wrapped list.
034     */
035    public AmetysNodeList(List<? extends Node> list)
036    {
037        _list = list;
038    }
039    
040    @Override
041    public int getLength()
042    {
043        return _list.size();
044    }
045    
046    @Override
047    public Node item(int index)
048    {
049        if (index < 0 || index > getLength())
050        {
051            return null;
052        }
053        
054        return _list.get(index);
055    }
056}