/*
* This program is free software; you can redistribute it and/or modify it under the
* terms of the GNU Lesser General Public License, version 2.1 as published by the Free Software
* Foundation.
*
* You should have received a copy of the GNU Lesser General Public License along with this
* program; if not, you can obtain a copy at http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html
* or from the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* This program 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.
*
* Copyright (c) 2001 - 2009 Object Refinery Ltd, Pentaho Corporation and Contributors.. All rights reserved.
*/
package org.pentaho.reporting.engine.classic.core.layout.process;
import org.pentaho.reporting.engine.classic.core.layout.model.ParagraphRenderBox;
import org.pentaho.reporting.engine.classic.core.layout.process.valign.BoxAlignContext;
import org.pentaho.reporting.libraries.base.util.FastStack;
/**
* Creation-Date: 12.07.2007, 14:16:07
*
* @author Thomas Morgner
*/
public final class MajorAxisParagraphBreakState
{
private BoxAlignContext currentLine;
private Object suspendItem;
private FastStack contexts;
private ParagraphRenderBox paragraph;
/**
*/
public MajorAxisParagraphBreakState()
{
this.contexts = new FastStack(50);
}
public void init(final ParagraphRenderBox paragraph)
{
if (paragraph == null)
{
throw new NullPointerException();
}
this.paragraph = paragraph;
this.contexts.clear();
this.suspendItem = null;
}
public void deinit()
{
this.paragraph = null;
this.suspendItem = null;
this.contexts.clear();
}
public boolean isActive()
{
return paragraph != null;
}
public ParagraphRenderBox getParagraph()
{
return paragraph;
}
public Object getSuspendItem()
{
return suspendItem;
}
public void setSuspendItem(final Object suspendItem)
{
this.suspendItem = suspendItem;
}
public boolean isSuspended()
{
return suspendItem != null;
}
public BoxAlignContext getCurrentLine()
{
return currentLine;
}
public void openContext(final BoxAlignContext context)
{
if (currentLine != null)
{
currentLine.addChild(context);
}
contexts.push(context);
currentLine = context;
}
public BoxAlignContext closeContext()
{
final BoxAlignContext context = (BoxAlignContext) contexts.pop();
context.validate();
if (contexts.isEmpty())
{
currentLine = null;
}
else
{
currentLine = (BoxAlignContext) contexts.peek();
}
return context;
}
}