001/*
002 * $RCSfile: XMLBox.java,v $
003 *
004 * 
005 * Copyright (c) 2005 Sun Microsystems, Inc. All  Rights Reserved.
006 * 
007 * Redistribution and use in source and binary forms, with or without
008 * modification, are permitted provided that the following conditions
009 * are met: 
010 * 
011 * - Redistribution of source code must retain the above copyright 
012 *   notice, this  list of conditions and the following disclaimer.
013 * 
014 * - Redistribution in binary form must reproduce the above copyright
015 *   notice, this list of conditions and the following disclaimer in 
016 *   the documentation and/or other materials provided with the
017 *   distribution.
018 * 
019 * Neither the name of Sun Microsystems, Inc. or the names of 
020 * contributors may be used to endorse or promote products derived 
021 * from this software without specific prior written permission.
022 * 
023 * This software is provided "AS IS," without a warranty of any 
024 * kind. ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND 
025 * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, 
026 * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY
027 * EXCLUDED. SUN MIDROSYSTEMS, INC. ("SUN") AND ITS LICENSORS SHALL 
028 * NOT BE LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF 
029 * USING, MODIFYING OR DISTRIBUTING THIS SOFTWARE OR ITS
030 * DERIVATIVES. IN NO EVENT WILL SUN OR ITS LICENSORS BE LIABLE FOR 
031 * ANY LOST REVENUE, PROFIT OR DATA, OR FOR DIRECT, INDIRECT, SPECIAL,
032 * CONSEQUENTIAL, INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER CAUSED AND
033 * REGARDLESS OF THE THEORY OF LIABILITY, ARISING OUT OF THE USE OF OR
034 * INABILITY TO USE THIS SOFTWARE, EVEN IF SUN HAS BEEN ADVISED OF THE
035 * POSSIBILITY OF SUCH DAMAGES. 
036 * 
037 * You acknowledge that this software is not designed or intended for 
038 * use in the design, construction, operation or maintenance of any 
039 * nuclear facility. 
040 *
041 * $Revision: 1.1 $
042 * $Date: 2005/02/11 05:01:37 $
043 * $State: Exp $
044 */
045package com.github.jaiimageio.jpeg2000.impl;
046
047import javax.imageio.metadata.IIOInvalidTreeException;
048import javax.imageio.metadata.IIOMetadataNode;
049
050import org.w3c.dom.Node;
051import org.w3c.dom.NodeList;
052
053/** This class is defined to represent a XML box of JPEG JP2
054 *  file format.  This type of box has a length, a type of "xml ".  Its
055 *  content is a text string of a XML instance.
056 */
057public class XMLBox extends Box {
058    /** Cache the element names for this box's xml definition */
059    private static String[] elementNames = {"Content"};
060
061    /** This method will be called by the getNativeNodeForSimpleBox of the
062     *  class Box to get the element names.
063     */
064    public static String[] getElementNames() {
065        return elementNames;
066    }
067
068    /** Create a Box from its content. */
069    public XMLBox(byte[] data) {
070        super(8 + data.length, 0x786D6C20, data);
071    }
072
073    /** Constructs a <code>UUIDListBox</code> based on the provided
074     *  <code>org.w3c.dom.Node</code>.
075     */
076    public XMLBox(Node node) throws IIOInvalidTreeException {
077        super(node);
078        NodeList children = node.getChildNodes();
079
080        for (int i = 0; i < children.getLength(); i++) {
081            Node child = children.item(i);
082            String name = child.getNodeName();
083
084            if ("Content".equals(name)) {
085                String value = child.getNodeValue();
086                if (value != null)
087                    data = value.getBytes();
088                else if (child instanceof IIOMetadataNode) {
089                    value = (String)((IIOMetadataNode)child).getUserObject();
090                    if (value != null)
091                        data = value.getBytes();
092                }
093            }
094        }
095    }
096
097    /** Creates an <code>IIOMetadataNode</code> from this XML
098     *  box.  The format of this node is defined in the XML dtd and xsd
099     *  for the JP2 image file.
100     */
101    public IIOMetadataNode getNativeNode() {
102        try {
103            IIOMetadataNode node = new IIOMetadataNode(Box.getName(getType()));
104            setDefaultAttributes(node);
105            IIOMetadataNode child = new IIOMetadataNode("Content");
106            String value = null;
107            if (data != null)
108                value = new String(data);
109            child.setUserObject(value);
110            child.setNodeValue(value);
111            node.appendChild(child);    
112            return node;
113        } catch (Exception e) {
114            throw new IllegalArgumentException(I18N.getString("Box0"));
115        }
116    }
117}