/*

 * reserved comment block

 * DO NOT REMOVE OR ALTER!

 */

/*

 * 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.xml.internal.utils;

import java.io.Serializable;

import org.xml.sax.Attributes;

import org.xml.sax.helpers.AttributesImpl;

/**

 * Mutable version of AttributesImpl.

 * @xsl.usage advanced

 */

public class MutableAttrListImpl extends AttributesImpl

        implements Serializable

{

    static final long serialVersionUID = 6289452013442934470L;

/**

 * Construct a new, empty AttributesImpl object.

 */

public MutableAttrListImpl()

  {

    super();

  }

  /**

   * Copy an existing Attributes object.

   *

   * <p>This constructor is especially useful inside a start

   * element event.</p>

   *

   * @param atts The existing Attributes object.

   */

  public MutableAttrListImpl(Attributes atts)

  {

    super(atts);

  }

  /**

   * Add an attribute to the end of the list.

   *

   * <p>For the sake of speed, this method does no checking

   * to see if the attribute is already in the list: that is

   * the responsibility of the application.</p>

   *

   * @param uri The Namespace URI, or the empty string if

   *        none is available or Namespace processing is not

   *        being performed.

   * @param localName The local name, or the empty string if

   *        Namespace processing is not being performed.

   * @param qName The qualified (prefixed) name, or the empty string

   *        if qualified names are not available.

   * @param type The attribute type as a string.

   * @param value The attribute value.

   */

  public void addAttribute(String uri, String localName, String qName,

                           String type, String value)

  {

    if (null == uri)

      uri = "";

    // getIndex(qName) seems to be more reliable than getIndex(uri, localName),

    // in the case of the xmlns attribute anyway.

    int index = this.getIndex(qName);

    // int index = this.getIndex(uri, localName);

    // System.out.println("MutableAttrListImpl#addAttribute: "+uri+":"+localName+", "+index+", "+qName+", "+this);

    if (index >= 0)

      this.setAttribute(index, uri, localName, qName, type, value);

    else

      super.addAttribute(uri, localName, qName, type, value);

  }

  /**

   * Add the contents of the attribute list to this list.

   *

   * @param atts List of attributes to add to this list

   */

  public void addAttributes(Attributes atts)

  {

    int nAtts = atts.getLength();

    for (int i = 0; i < nAtts; i++)

    {

      String uri = atts.getURI(i);

      if (null == uri)

        uri = "";

      String localName = atts.getLocalName(i);

      String qname = atts.getQName(i);

      int index = this.getIndex(uri, localName);

      // System.out.println("MutableAttrListImpl#addAttributes: "+uri+":"+localName+", "+index+", "+atts.getQName(i)+", "+this);

      if (index >= 0)

        this.setAttribute(index, uri, localName, qname, atts.getType(i),

                          atts.getValue(i));

      else

        addAttribute(uri, localName, qname, atts.getType(i),

                     atts.getValue(i));

    }

  }

  /**

   * Return true if list contains the given (raw) attribute name.

   *

   * @param name Raw name of attribute to look for

   *

   * @return true if an attribute is found with this name

   */

  public boolean contains(String name)

  {

    return getValue(name) != null;

  }

}

// end of MutableAttrListImpl.java