001 /**
002 * ========================================
003 * JFreeReport : a free Java report library
004 * ========================================
005 *
006 * Project Info: http://reporting.pentaho.org/
007 *
008 * (C) Copyright 2000-2007, by Object Refinery Limited, Pentaho Corporation and Contributors.
009 *
010 * This library is free software; you can redistribute it and/or modify it under the terms
011 * of the GNU Lesser General Public License as published by the Free Software Foundation;
012 * either version 2.1 of the License, or (at your option) any later version.
013 *
014 * This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
015 * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
016 * See the GNU Lesser General Public License for more details.
017 *
018 * You should have received a copy of the GNU Lesser General Public License along with this
019 * library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
020 * Boston, MA 02111-1307, USA.
021 *
022 * [Java is a trademark or registered trademark of Sun Microsystems, Inc.
023 * in the United States and other countries.]
024 *
025 * ------------
026 * $Id: StyleSheetReadHandler.java,v 1.7 2007/04/01 18:49:30 taqua Exp $
027 * ------------
028 * (C) Copyright 2000-2005, by Object Refinery Limited.
029 * (C) Copyright 2005-2007, by Pentaho Corporation.
030 */
031 package org.jfree.report.modules.factories.report.flow;
032
033 import org.jfree.layouting.input.style.StyleSheet;
034 import org.jfree.resourceloader.Resource;
035 import org.jfree.resourceloader.ResourceCreationException;
036 import org.jfree.resourceloader.ResourceKey;
037 import org.jfree.resourceloader.ResourceKeyCreationException;
038 import org.jfree.resourceloader.ResourceLoadingException;
039 import org.jfree.resourceloader.ResourceManager;
040 import org.jfree.resourceloader.ResourceException;
041 import org.jfree.util.Log;
042 import org.jfree.xmlns.parser.StringReadHandler;
043 import org.jfree.xmlns.parser.ParseException;
044 import org.xml.sax.Attributes;
045 import org.xml.sax.SAXException;
046
047 /**
048 * Creation-Date: 12.04.2006, 14:53:29
049 *
050 * @author Thomas Morgner
051 */
052 public class StyleSheetReadHandler extends StringReadHandler
053 {
054 private StyleSheet styleSheet;
055
056 public StyleSheetReadHandler()
057 {
058 }
059
060 /**
061 * Starts parsing.
062 *
063 * @param attrs the attributes.
064 * @throws SAXException if there is a parsing error.
065 */
066 protected void startParsing(final Attributes attrs) throws SAXException
067 {
068 super.startParsing(attrs);
069 String href = attrs.getValue(getUri(), "href");
070 if (href != null)
071 {
072 final ResourceKey key = getRootHandler().getSource();
073 final ResourceManager manager = getRootHandler().getResourceManager();
074 try
075 {
076 final ResourceKey derivedKey = manager.deriveKey(key, href);
077 final Resource resource = manager.create(derivedKey, null,
078 StyleSheet.class);
079 getRootHandler().getDependencyCollector().add(resource);
080 styleSheet = (StyleSheet) resource.getResource();
081 }
082 catch (ResourceKeyCreationException e)
083 {
084 throw new ParseException
085 ("Unable to derive key for " + key + " and " + href, getLocator());
086 }
087 catch (ResourceCreationException e)
088 {
089 Log.warn("Unable to parse resource for " + key + " and " + href);
090 }
091 catch (ResourceLoadingException e)
092 {
093 Log.warn ("Unable to load resource data for " + key + " and " + href);
094 }
095 catch (ResourceException e)
096 {
097 Log.warn ("Unable to load resource for " + key + " and " + href);
098 }
099 }
100 }
101
102 /**
103 * Done parsing.
104 *
105 * @throws SAXException if there is a parsing error.
106 */
107 protected void doneParsing() throws SAXException
108 {
109 super.doneParsing();
110 if (this.styleSheet != null)
111 {
112 return;
113 }
114
115 final String styleText = getResult();
116 if (styleText.trim().length() == 0)
117 {
118 return;
119 }
120 try
121 {
122 final byte[] bytes = styleText.getBytes("UTF-8");
123
124 final ResourceKey baseKey = getRootHandler().getSource();
125 final ResourceManager resourceManager = getRootHandler().getResourceManager();
126 final ResourceKey rawKey = resourceManager.createKey(bytes);
127
128 final Resource resource = resourceManager.create
129 (rawKey, baseKey, StyleSheet.class);
130 this.styleSheet = (StyleSheet) resource.getResource();
131 }
132 catch (Exception e)
133 {
134 e.printStackTrace();
135 }
136 }
137
138 /**
139 * Returns the object for this element.
140 *
141 * @return the object.
142 */
143 public Object getObject()
144 {
145 return styleSheet;
146 }
147
148 public StyleSheet getStyleSheet()
149 {
150 return styleSheet;
151 }
152 }