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/**
* ===========================================
* 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: AbstractLayoutProcess.java 6489 2008-11-28 14:53:40Z tmorgner $
* ------------
* (C) Copyright 2006-2007, by Pentaho Corporation.
*/
package org.jfree.layouting;
import org.jfree.layouting.input.style.PseudoPage;
import org.jfree.layouting.input.style.values.CSSValue;
import org.jfree.layouting.layouter.context.DefaultDocumentContext;
import org.jfree.layouting.layouter.context.DocumentContext;
import org.jfree.layouting.layouter.feed.InputFeed;
import org.jfree.layouting.layouter.style.resolver.DefaultStyleResolver;
import org.jfree.layouting.layouter.style.resolver.StyleResolver;
import org.jfree.layouting.normalizer.content.NormalizationException;
import org.jfree.layouting.normalizer.content.Normalizer;
import org.jfree.layouting.output.OutputProcessor;
import org.jfree.layouting.output.OutputProcessorMetaData;
import org.pentaho.reporting.libraries.resourceloader.ResourceManager;
/**
* Creation-Date: 05.12.2005, 19:17:21
*
* @author Thomas Morgner
*/
public abstract class AbstractLayoutProcess implements LayoutProcess
{
protected abstract static class AbstractLayoutProcessState
implements LayoutProcessState
{
private State inputFeedState;
private DocumentContext documentContext;
private State styleResolver;
protected AbstractLayoutProcessState(final AbstractLayoutProcess lp)
throws StateException
{
if (lp.styleResolver != null)
{
this.styleResolver = lp.styleResolver.saveState();
}
this.documentContext = lp.documentContext;
if (lp.inputFeed != null)
{
this.inputFeedState = lp.inputFeed.saveState();
}
}
protected AbstractLayoutProcess restore(final OutputProcessor outputProcessor,
final AbstractLayoutProcess layoutProcess)
throws StateException
{
// Log.error ("START ************************************************* ");
layoutProcess.documentContext = documentContext;
if (styleResolver != null)
{
layoutProcess.styleResolver =
(StyleResolver) styleResolver.restore(layoutProcess);
}
if (inputFeedState != null)
{
layoutProcess.inputFeed = (InputFeed) inputFeedState.restore(
layoutProcess);
}
// Log.error ("DONE ************************************************* ");
return layoutProcess;
}
}
private InputFeed inputFeed;
private DocumentContext documentContext;
private OutputProcessor outputProcessor;
private StyleResolver styleResolver;
protected AbstractLayoutProcess(final OutputProcessor outputProcessor)
{
if (outputProcessor == null)
{
throw new NullPointerException();
}
this.outputProcessor = outputProcessor;
this.documentContext = new DefaultDocumentContext();
this.styleResolver = new DefaultStyleResolver();
}
public OutputProcessorMetaData getOutputMetaData()
{
return outputProcessor.getMetaData();
}
public OutputProcessor getOutputProcessor()
{
return outputProcessor;
}
public InputFeed getInputFeed()
{
if (inputFeed == null)
{
inputFeed = getOutputProcessor().createInputFeed(this);
}
return inputFeed;
}
protected abstract InputFeed createInputFeed();
/**
* The document context holds global information, like the used stylesheets.
* It also holds the caches for loading external contents.
*
* @return the document context.
*/
public DocumentContext getDocumentContext()
{
return documentContext;
}
public ResourceManager getResourceManager()
{
return documentContext.getResourceManager();
}
public void pageBreakEncountered(final CSSValue pageName,
final PseudoPage[] pseudoPages)
throws NormalizationException
{
getInputFeed().handlePageBreakEncountered(pageName, pseudoPages);
}
public boolean isPagebreakEncountered()
{
return getInputFeed().isPagebreakEncountered();
}
// protected abstract AbstractLayoutProcessState createState()
// throws StateException;
// protected void fillState(AbstractLayoutProcessState state) throws
// StateException
// {
// state.setDocumentContext(documentContext);
// if (inputFeed != null)
// {
// state.setInputFeedState(inputFeed.saveState());
// }
// }
//
// public LayoutProcessState saveState() throws StateException
// {
// AbstractLayoutProcessState state = createState();
// fillState(state);
// return state;
// }
public Normalizer getNormalizer()
{
return getInputFeed().getCurrentNormalizer();
}
public StyleResolver getStyleResolver()
{
return styleResolver;
}
}
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