/*

 * 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.

 */

/*

 * $Id:  $

 */

package com.sun.org.apache.xml.internal.serializer.dom3;

import java.util.Vector;

//import org.apache.xerces.dom3.DOMStringList;

import org.w3c.dom.DOMStringList;

/**

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

 *

 * @xsl.usage internal

 */

final class DOMStringListImpl implements DOMStringList {

    //A collection of DOMString values

    private Vector fStrings;

    /**

     * Construct an empty list of DOMStringListImpl

     */

    DOMStringListImpl() {

        fStrings = new Vector();

    }

    /**

     * Construct an empty list of DOMStringListImpl

     */

    DOMStringListImpl(Vector params) {

        fStrings = params;

    }

    /**

     * Construct an empty list of DOMStringListImpl

     */

    DOMStringListImpl(String[] params ) {

        fStrings = new Vector();

        if (params != null) {

            for (int i=0; i < params.length; i++) {

                fStrings.add(params[i]);

            }

        }

    }

    /**

     * @see org.apache.xerces.dom3.DOMStringList#item(int)

     */

    public String item(int index) {

        try {

            return (String) fStrings.elementAt(index);

        } catch (ArrayIndexOutOfBoundsException e) {

            return null;

        }

    }

    /**

     * @see org.apache.xerces.dom3.DOMStringList#getLength()

     */

    public int getLength() {

        return fStrings.size();

    }

    /**

     * @see org.apache.xerces.dom3.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);

    }

}