/**
* ===========================================
* LibLayout : a free Java layouting library
* ===========================================
*
* Project Info: http://reporting.pentaho.org/liblayout/
*
* (C) Copyright 2006-2007, by Pentaho Corporation and Contributors.
*
* 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.
*
* [Java is a trademark or registered trademark of Sun Microsystems, Inc.
* in the United States and other countries.]
*
* ------------
* $Id: StyleRuleFactory.java 6653 2008-12-02 14:53:40Z tmorgner $
* ------------
* (C) Copyright 2006-2007, by Pentaho Corporation.
*/
package org.jfree.layouting.input.style.parser;
import java.io.IOException;
import org.jfree.layouting.input.style.CSSDeclarationRule;
import org.jfree.layouting.input.style.CSSStyleRule;
import org.jfree.layouting.input.style.StyleKeyRegistry;
import org.jfree.layouting.input.style.StyleRule;
import org.w3c.css.sac.InputSource;
import org.w3c.css.sac.Parser;
import org.pentaho.reporting.libraries.resourceloader.ResourceFactory;
import org.pentaho.reporting.libraries.resourceloader.Resource;
import org.pentaho.reporting.libraries.resourceloader.ResourceManager;
import org.pentaho.reporting.libraries.resourceloader.ResourceData;
import org.pentaho.reporting.libraries.resourceloader.ResourceKey;
import org.pentaho.reporting.libraries.resourceloader.ResourceCreationException;
import org.pentaho.reporting.libraries.resourceloader.ResourceLoadingException;
import org.pentaho.reporting.libraries.resourceloader.DependencyCollector;
import org.pentaho.reporting.libraries.resourceloader.CompoundResource;
/**
* Parses a single style rule.
*
* @author Thomas Morgner
*/
public class StyleRuleFactory implements ResourceFactory
{
public StyleRuleFactory ()
{
}
public Resource create (final ResourceManager manager,
final ResourceData data,
final ResourceKey context)
throws ResourceCreationException, ResourceLoadingException
{
try
{
final Parser parser = CSSParserFactory.getInstance().createCSSParser();
final ResourceKey key;
final long version;
if (context == null)
{
key = data.getKey();
version = data.getVersion(manager);
}
else
{
key = context;
version = -1;
}
final StyleSheetHandler handler = new StyleSheetHandler();
handler.init (manager, key, version, StyleKeyRegistry.getRegistry(), null);
parser.setDocumentHandler(handler);
final InputSource inputSource = new InputSource();
inputSource.setByteStream(data.getResourceAsStream(manager));
handler.initParseContext(inputSource);
handler.setStyleRule(new CSSStyleRule(null, null));
parser.parseStyleDeclaration(inputSource);
final DependencyCollector dependencies = handler.getDependencies();
if (context != null)
{
dependencies.add(data.getKey(), data.getVersion(manager));
}
CSSParserContext.getContext().destroy();
final CSSDeclarationRule styleRule = handler.getStyleRule();
if (styleRule == null)
{
throw new ResourceCreationException("Damn, the style rule is null");
}
return new CompoundResource
(data.getKey(), dependencies, styleRule);
}
catch (CSSParserInstantiationException e)
{
throw new ResourceCreationException("Failed to parse the stylesheet.");
}
catch (IOException e)
{
throw new ResourceLoadingException("Failed to load the stylesheet.");
}
}
public Class getFactoryType ()
{
return StyleRule.class;
}
public void initializeDefaults ()
{
// nothing needed ...
}
}