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Java > Open Source Codes > net > sf > jasperreports > engine > util > JRTextAttribute


1 /*
2  * ============================================================================
3  * GNU Lesser General Public License
4  * ============================================================================
5  *
6  * JasperReports - Free Java report-generating library.
7  * Copyright (C) 2001-2006 JasperSoft Corporation http://www.jaspersoft.com
8  *
9  * This library is free software; you can redistribute it and/or
10  * modify it under the terms of the GNU Lesser General Public
11  * License as published by the Free Software Foundation; either
12  * version 2.1 of the License, or (at your option) any later version.
13  *
14  * This library is distributed in the hope that it will be useful,
15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17  * Lesser General Public License for more details.
18  *
19  * You should have received a copy of the GNU Lesser General Public
20  * License along with this library; if not, write to the Free Software
21  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
22  *
23  * JasperSoft Corporation
24  * 303 Second Street, Suite 450 North
25  * San Francisco, CA 94107
26  * http://www.jaspersoft.com
27  */
28 package net.sf.jasperreports.engine.util;
29
30 import java.io.InvalidObjectException JavaDoc;
31 import java.text.AttributedCharacterIterator JavaDoc;
32 import java.util.HashMap JavaDoc;
33 import java.util.Map JavaDoc;
34
35
36 /**
37  * @author Teodor Danciu (teodord@users.sourceforge.net)
38  * @version $Id: JRTextAttribute.java 1498 2006-11-16 14:52:01 +0200 (Thu, 16 Nov 2006) teodord $
39  */
40 public final class JRTextAttribute extends AttributedCharacterIterator.Attribute JavaDoc
41 {
42
43     private static final Map JavaDoc instanceMap = new HashMap JavaDoc(4);
44
45     /**
46      *
47      */
48     public static JRTextAttribute PDF_FONT_NAME = new JRTextAttribute("PDF_FONT_NAME");
49     public static JRTextAttribute PDF_ENCODING = new JRTextAttribute("PDF_ENCODING");
50     public static JRTextAttribute IS_PDF_EMBEDDED = new JRTextAttribute("IS_PDF_EMBEDDED");
51     public static JRTextAttribute HTML_FONT_FACE = new JRTextAttribute("HTML_FONT_FACE");
52     
53     /**
54      *
55      */
56     private JRTextAttribute(String JavaDoc name)
57     {
58         super(name);
59         
60         if (this.getClass() == JRTextAttribute.class)
61         {
62             instanceMap.put(name, this);
63         }
64     }
65
66     /**
67      * Resolves instances being deserialized to the predefined constants.
68     */
69     protected Object JavaDoc readResolve() throws InvalidObjectException JavaDoc
70     {
71         if (this.getClass() != JRTextAttribute.class)
72         {
73             throw new InvalidObjectException JavaDoc("Subclass didn't correctly implement readResolve");
74         }
75         
76         JRTextAttribute instance = (JRTextAttribute) instanceMap.get(getName());
77         if (instance != null)
78         {
79             return instance;
80         }
81
82         throw new InvalidObjectException JavaDoc("Unknown attribute name");
83     }
84     
85 }
86
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