/*

 * $Id: Chapter.java 3373 2008-05-12 16:21:24Z xlv $

 *

 * This file is part of the iText project.

 * Copyright (c) 1998-2009 1T3XT BVBA

 * Authors: Bruno Lowagie, Paulo Soares, et al.

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU Affero General Public License version 3

 * as published by the Free Software Foundation with the addition of the

 * following permission added to Section 15 as permitted in Section 7(a):

 * FOR ANY PART OF THE COVERED WORK IN WHICH THE COPYRIGHT IS OWNED BY 1T3XT,

 * 1T3XT DISCLAIMS THE WARRANTY OF NON INFRINGEMENT OF THIRD PARTY RIGHTS.

 *

 * This program 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 Affero General Public License for more details.

 * You should have received a copy of the GNU Affero General Public License

 * along with this program; if not, see http://www.gnu.org/licenses or write to

 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,

 * Boston, MA, 02110-1301 USA, or download the license from the following URL:

 * http://itextpdf.com/terms-of-use/

 *

 * The interactive user interfaces in modified source and object code versions

 * of this program must display Appropriate Legal Notices, as required under

 * Section 5 of the GNU Affero General Public License.

 *

 * In accordance with Section 7(b) of the GNU Affero General Public License,

 * you must retain the producer line in every PDF that is created or manipulated

 * using iText.

 *

 * You can be released from the requirements of the license by purchasing

 * a commercial license. Buying such a license is mandatory as soon as you

 * develop commercial activities involving the iText software without

 * disclosing the source code of your own applications.

 * These activities include: offering paid services to customers as an ASP,

 * serving PDFs on the fly in a web application, shipping iText with a closed

 * source product.

 *

 * For more information, please contact iText Software Corp. at this

 * address: sales@itextpdf.com

 */

package com.itextpdf.text.pdf;



/**

 * Beginning with BaseVersion 1.7, the extensions dictionary lets developers

 * designate that a given document contains extensions to PDF. The presence

 * of the extension dictionary in a document indicates that it may contain

 * developer-specific PDF properties that extend a particular base version

 * of the PDF specification.

 * The extensions dictionary enables developers to identify their own extensions

 * relative to a base version of PDF. Additionally, the convention identifies

 * extension levels relative to that base version. The intent of this dictionary

 * is to enable developers of PDF-producing applications to identify company-specific

 * specifications (such as this one) that PDF-consuming applications use to

 * interpret the extensions.

 * @since	2.1.6

 */

public class PdfDeveloperExtension {



	/** An instance of this class for Adobe 1.7 Extension level 3. */

	public static final PdfDeveloperExtension ADOBE_1_7_EXTENSIONLEVEL3 =

		new PdfDeveloperExtension(PdfName.ADBE, PdfWriter.PDF_VERSION_1_7, 3);

	

	/** The prefix used in the Extensions dictionary added to the Catalog. */

	protected PdfName prefix;

	/** The base version. */

	protected PdfName baseversion;

	/** The extension level within the baseversion. */

	protected int extensionLevel;

	

	/**

	 * Creates a PdfDeveloperExtension object.

	 * @param prefix	the prefix referring to the developer

	 * @param baseversion	the number of the base version

	 * @param extensionLevel	the extension level within the baseverion.

	 */

	public PdfDeveloperExtension(PdfName prefix, PdfName baseversion, int extensionLevel) {

		this.prefix = prefix;

		this.baseversion = baseversion;

		this.extensionLevel = extensionLevel;

	}



	/**

	 * Gets the prefix name.

	 * @return	a PdfName

	 */

	public PdfName getPrefix() {

		return prefix;

	}



	/**

	 * Gets the baseversion name.

	 * @return	a PdfName

	 */

	public PdfName getBaseversion() {

		return baseversion;

	}



	/**

	 * Gets the extension level within the baseversion.

	 * @return	an integer

	 */

	public int getExtensionLevel() {

		return extensionLevel;

	}

	

	/**

	 * Generations the developer extension dictionary corresponding

	 * with the prefix.

	 * @return	a PdfDictionary

	 */

	public PdfDictionary getDeveloperExtensions() {

		PdfDictionary developerextensions = new PdfDictionary();

		developerextensions.put(PdfName.BASEVERSION, baseversion);

		developerextensions.put(PdfName.EXTENSIONLEVEL, new PdfNumber(extensionLevel));

		return developerextensions;

	}

}