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Java > Open Source Codes > org > jfree > xml > parser > coretypes > RenderingHintsReadHandler


1 /* ========================================================================
2  * JCommon : a free general purpose class library for the Java(tm) platform
3  * ========================================================================
4  *
5  * (C) Copyright 2000-2005, by Object Refinery Limited and Contributors.
6  *
7  * Project Info: http://www.jfree.org/jcommon/index.html
8  *
9  * This library is free software; you can redistribute it and/or modify it
10  * under the terms of the GNU Lesser General Public License as published by
11  * the Free Software Foundation; either version 2.1 of the License, or
12  * (at your option) any later version.
13  *
14  * This library is distributed in the hope that it will be useful, but
15  * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
16  * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
17  * 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
22  * USA.
23  *
24  * [Java is a trademark or registered trademark of Sun Microsystems, Inc.
25  * in the United States and other countries.]
26  *
27  * ------------------------------
28  * RenderingHintsReadHandler.java
29  * ------------------------------
30  * (C)opyright 2003, 2004, by Thomas Morgner and Contributors.
31  *
32  * Original Author: Thomas Morgner;
33  * Contributor(s): David Gilbert (for Object Refinery Limited);
34  *
35  * $Id: RenderingHintsReadHandler.java,v 1.3 2005/10/18 13:33:32 mungady Exp $
36  *
37  * Changes
38  * -------
39  * 03-Dec-2003 : Initial version
40  * 11-Feb-2004 : Added missing Javadocs (DG);
41  *
42  */

43
44 package org.jfree.xml.parser.coretypes;
45
46 import java.awt.RenderingHints JavaDoc;
47 import java.util.ArrayList JavaDoc;
48
49 import org.jfree.xml.parser.AbstractXmlReadHandler;
50 import org.jfree.xml.parser.XmlReadHandler;
51 import org.jfree.xml.parser.XmlReaderException;
52 import org.xml.sax.Attributes JavaDoc;
53 import org.xml.sax.SAXException JavaDoc;
54
55 /**
56  * A read handler that can parse the XML element for a {@link RenderingHints} collection.
57  */

58 public class RenderingHintsReadHandler extends AbstractXmlReadHandler {
59
60     /** The subhandlers. */
61     private ArrayList JavaDoc handlers;
62     
63     /** The rendering hints under construction. */
64     private RenderingHints JavaDoc renderingHints;
65
66     /**
67      * Creates a new read handler.
68      */

69     public RenderingHintsReadHandler() {
70         super();
71     }
72
73     /**
74      * Starts parsing.
75      *
76      * @param attrs the attributes.
77      *
78      * @throws SAXException never.
79      */

80     protected void startParsing(final Attributes JavaDoc attrs) throws SAXException JavaDoc {
81         this.handlers = new ArrayList JavaDoc();
82     }
83
84     /**
85      * Returns the handler for a child element.
86      *
87      * @param tagName the tag name.
88      * @param atts the attributes.
89      *
90      * @return the handler.
91      *
92      * @throws SAXException if there is a parsing error.
93      * @throws XmlReaderException if there is a reader error.
94      */

95     protected XmlReadHandler getHandlerForChild(final String JavaDoc tagName, final Attributes JavaDoc atts)
96         throws XmlReaderException, SAXException JavaDoc {
97
98         if (!tagName.equals("entry")) {
99             throw new SAXException JavaDoc("Expected 'entry' tag.");
100         }
101
102         final XmlReadHandler handler = new RenderingHintValueReadHandler();
103         this.handlers.add(handler);
104         return handler;
105     }
106
107     /**
108      * Done parsing.
109      *
110      * @throws SAXException if there is a parsing error.
111      * @throws XmlReaderException if there is a reader error.
112      */

113     protected void doneParsing() throws SAXException JavaDoc, XmlReaderException {
114         this.renderingHints = new RenderingHints JavaDoc(null);
115
116         for (int i = 0; i < this.handlers.size(); i++) {
117             final RenderingHintValueReadHandler rh =
118                 (RenderingHintValueReadHandler) this.handlers.get(i);
119             this.renderingHints.put(rh.getKey(), rh.getValue());
120         }
121     }
122
123     /**
124      * Returns the object for this element.
125      *
126      * @return the object.
127      *
128      * @throws XmlReaderException if there is a parsing error.
129      */

130     public Object JavaDoc getObject() throws XmlReaderException {
131         return this.renderingHints;
132     }
133 }
134
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