/*

 * Copyright (c) 2017, Oracle and/or its affiliates. All rights reserved.

 */

/*

 * Licensed to the Apache Software Foundation (ASF) under one or more

 * contributor license agreements.  See the NOTICE file distributed with

 * this work for additional information regarding copyright ownership.

 * The ASF licenses this file to You under the Apache License, Version 2.0

 * (the "License"); you may not use this file except in compliance with

 * the License.  You may obtain a copy of the License at

 *

 *      http://www.apache.org/licenses/LICENSE-2.0

 *

 * Unless required by applicable law or agreed to in writing, software

 * distributed under the License is distributed on an "AS IS" BASIS,

 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

 * See the License for the specific language governing permissions and

 * limitations under the License.

 */

package com.sun.org.apache.xerces.internal.dom;

import java.util.ArrayList;

import java.util.List;

import org.w3c.dom.DOMStringList;

/**

 * DOM Level 3

 *

 * This class implements the DOM Level 3 Core interface DOMStringList.

 *

 * @xerces.internal

 *

 * @author Neil Delima, IBM

 * @LastModified: Nov 2017

 */

public class DOMStringListImpl implements DOMStringList {

    // A collection of DOMString values

    private final List<String> fStrings;

    /**

     * Construct an empty list of DOMStringListImpl

     */

    public DOMStringListImpl() {

        fStrings = new ArrayList<>();

    }

    /**

     * Construct a DOMStringListImpl from an ArrayList

     */

    public DOMStringListImpl(List<String> params) {

        fStrings = params;

    }

    /**

     * @see org.w3c.dom.DOMStringList#item(int)

     */

    public String item(int index) {

        final int length = getLength();

        if (index >= 0 && index < length) {

            return fStrings.get(index);

        }

        return null;

    }

    /**

     * @see org.w3c.dom.DOMStringList#getLength()

     */

    public int getLength() {

            return fStrings.size();

    }

    /**

     * @see org.w3c.dom.DOMStringList#contains(String)

     */

    public boolean contains(String param) {

        return fStrings.contains(param);

    }

    /**

     * DOM Internal:

     * Add a <code>DOMString</code> to the list.

     *

     * @param domString A string to add to the list

     */

    public void add(String param) {

        fStrings.add(param);

    }

}