maptagbuilder.java

一款即时通讯软件

/*
 *   License
 *
 * The contents of this file are subject to the Jabber Open Source License
 * Version 1.0 (the "License").  You may not copy or use this file, in either
 * source code or executable form, except in compliance with the License.  You
 * may obtain a copy of the License at http://www.jabber.com/license/ or at
 * http://www.opensource.org/.  
 *
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied.  See the License
 * for the specific language governing rights and limitations under the
 * License.
 *
 *   Copyrights
 *
 * Portions created by or assigned to Jabber.com, Inc. are 
 * Copyright (c) 2000 Jabber.com, Inc.  All Rights Reserved.  Contact
 * information for Jabber.com, Inc. is available at http://www.jabber.com/.
 *
 * Portions Copyright (c) 1999-2000 David Waite 
 *
 *   Acknowledgements
 * 
 * Special thanks to the Jabber Open Source Contributors for their
 * suggestions and support of Jabber.
 * 
 *   Changes
 *
 * @author  David Waite <a href="mailto:[e-mail]">
 *                      <i>&lt;[e-mail]&gt;</i></a>
 *
 * @author  $Author: chris $
 * @version $Revision: 1.1 $
 *
 * j.komzak
 * Changed into MapTagBuilder
 */

package edu.ou.kmi.buddyspace.plugins.maps.xml;

/*
 * MapTagBuilder.java
 *
 * Project: BuddySpace
 * (C) Copyright Knowledge Media Institute 2002
 *
 *
 * Created on 16 August 2002, 10:20
 */

import java.util.Vector;
import org.jabber.jabberbeans.Extension.*;

/**
 * <code>MapTagBuilder</code> is used to construct MapTag objects
 *
 * @author  Jiri Komzak, Knowledge Media Institute, Open University, United Kingdom
 */
public class MapTagBuilder
    implements ExtensionBuilder
{
    /** Vector of layerTag objects contained. */
    private Vector layerList;
    
    private String id = null;

    /** Creates a new <code>MapTagBuilder</code> instance. */
    public MapTagBuilder()
    { reset(); }
    
    /**
     * <code>reset</code> the builder to a default state, so it can be reused.
     */
    public void reset() {
        layerList = new Vector();
        id = null;
    }
    
    public void setID(String newID) {
        id = newID;
    }
    
    public String getID() {
        return id;
    }

    /**
     * <code>addLayer</code> adds a new layer object to the end of this
     * list.
     *
     * @param layer an <code>LayerTag</code> value
     */
    public void addLayer(LayerTag layer)
    {
        if (!layerList.contains(layer))
            layerList.addElement(layer);
    }

    /**
     * <code>delLayer</code> removes an layer from this list, if it is present
     *
     * @param layer an <code>LayerTag</code> value
     */
    public void delLayer(LayerTag layer)
    {
        if (layerList.contains(layer))
            layerList.removeElement(layer);
    }

    /**
     * <code>getLayers</code> returns the vector representing the layer
     * objects associated with this object.
     *
     * @return a <code>Vector</code> value
     */
    public Vector getLayers()
    { return layerList; }

    /**
     * <code>build</code> a new MapTag object
     *
     * @return an <code>Extension</code> value
     * @exception InstantiationException if insufficient or incorrect data
     * was proviced.
     */
    public Extension build()
        throws InstantiationException
    { return new MapTag(this); }
}