Ptidej-v5.2-master/Ptidej Reporting Tests/src/net/sf/jasperreports/engine/util/JRTextAttribute.java
/*
 * ============================================================================
 * GNU Lesser General Public License
 * ============================================================================
 *
 * JasperReports - Free Java report-generating library.
 * Copyright (C) 2001-2006 JasperSoft Corporation http://www.jaspersoft.com
 * 
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) 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
 * Lesser General Public License for more details.
 * 
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307, USA.
 * 
 * JasperSoft Corporation
 * 303 Second Street, Suite 450 North
 * San Francisco, CA 94107
 * http://www.jaspersoft.com
 */
package net.sf.jasperreports.engine.util;

import java.io.InvalidObjectException;
import java.text.AttributedCharacterIterator;
import java.util.HashMap;
import java.util.Map;

import net.sf.jasperreports.engine.JRConstants;


/**
 * @author Teodor Danciu (teodord@users.sourceforge.net)
 * @version $Id: JRTextAttribute.java,v 1.1 2008/09/29 16:20:17 guehene Exp $
 */
public final class JRTextAttribute extends AttributedCharacterIterator.Attribute
{
	/**
	 *
	 */
	private static final long serialVersionUID = JRConstants.SERIAL_VERSION_UID;

	private static final Map instanceMap = new HashMap(4);

	/**
	 *
	 */
	public static JRTextAttribute PDF_FONT_NAME = new JRTextAttribute("PDF_FONT_NAME");
	public static JRTextAttribute PDF_ENCODING = new JRTextAttribute("PDF_ENCODING");
	public static JRTextAttribute IS_PDF_EMBEDDED = new JRTextAttribute("IS_PDF_EMBEDDED");
	public static JRTextAttribute HTML_FONT_FACE = new JRTextAttribute("HTML_FONT_FACE");
	
	/**
	 *
	 */
	private JRTextAttribute(String name)
	{
		super(name);
		
		if (this.getClass() == JRTextAttribute.class)
		{
			instanceMap.put(name, this);
		}
	}

	/**
	 * Resolves instances being deserialized to the predefined constants.
	*/
	protected Object readResolve() throws InvalidObjectException 
	{
		if (this.getClass() != JRTextAttribute.class)
		{
			throw new InvalidObjectException("Subclass didn't correctly implement readResolve");
		}
		
		JRTextAttribute instance = (JRTextAttribute) instanceMap.get(getName());
		if (instance != null)
		{
			return instance;
		}

		throw new InvalidObjectException("Unknown attribute name");
	}
	
}
