/*
 * $Id: LangAlt.java 3373 2008-05-12 16:21:24Z xlv $
 *
 * Copyright 2007 by Armin Haberling
 *
 * The contents of this file are subject to the Mozilla Public License Version 1.1
 * (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.mozilla.org/MPL/
 *
 * 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.
 *
 * The Original Code is 'iText, a free JAVA-PDF library'.
 *
 * The Initial Developer of the Original Code is Bruno Lowagie. Portions created by
 * the Initial Developer are Copyright (C) 1999-2005 by Bruno Lowagie.
 * All Rights Reserved.
 * Co-Developer of the code is Paulo Soares. Portions created by the Co-Developer
 * are Copyright (C) 2000-2005 by Paulo Soares. All Rights Reserved.
 *
 * Contributor(s): all the names of the contributors are added in the source code
 * where applicable.
 *
 * Alternatively, the contents of this file may be used under the terms of the
 * LGPL license (the "GNU LIBRARY GENERAL PUBLIC LICENSE"), in which case the
 * provisions of LGPL are applicable instead of those above.  If you wish to
 * allow use of your version of this file only under the terms of the LGPL
 * License and not to allow others to use your version of this file under
 * the MPL, indicate your decision by deleting the provisions above and
 * replace them with the notice and other provisions required by the LGPL.
 * If you do not delete the provisions above, a recipient may use your version
 * of this file under either the MPL or the GNU LIBRARY GENERAL PUBLIC LICENSE 
 *
 * This library is free software; you can redistribute it and/or modify it
 * under the terms of the MPL as stated above or under the terms of the GNU
 * Library General Public License as published by the Free Software Foundation;
 * either version 2 of the License, or any later version.
 *
 * This library is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 * FOR A PARTICULAR PURPOSE. See the GNU LIBRARY GENERAL PUBLIC LICENSE for more
 * details.
 *
 * If you didn't download this code from the following link, you should check if
 * you aren't using an obsolete version:
 * http://www.lowagie.com/iText/
 */

package com.lowagie.text.xml.xmp;

import java.util.Enumeration;
import java.util.Properties;

public class LangAlt extends Properties
{

	/**
	 * A serial version id.
	 */
	private static final long serialVersionUID = 4396971487200843099L;

	/**
	 * Key for the default language.
	 */
	public static final String DEFAULT = "x-default";

	/**
	 * Creates a Properties object that stores languages for use in an XmpSchema
	 */
	public LangAlt(String defaultValue)
	{
		super();
		addLanguage(DEFAULT, defaultValue);
	}

	/**
	 * Creates a Properties object that stores languages for use in an XmpSchema
	 */
	public LangAlt()
	{
		super();
	}

	/**
	 * Add a language.
	 */
	public void addLanguage(String language, String value)
	{
		setProperty(language, XmpSchema.escape(value));
	}

	/**
	 * Process a property.
	 */
	protected void process(StringBuffer buf, Object lang)
	{
		buf.append("<rdf:li xml:lang=\"");
		buf.append(lang);
		buf.append("\" >");
		buf.append(get(lang));
		buf.append("</rdf:li>");
	}

	/**
	 * Creates a String that can be used in an XmpSchema.
	 */
	public String toString()
	{
		StringBuffer sb = new StringBuffer();
		sb.append("<rdf:Alt>");
		for(Enumeration e = this.propertyNames(); e.hasMoreElements(); )
		{
			process(sb, e.nextElement());
		}
		sb.append("</rdf:Alt>");
		return sb.toString();
	}

}