/*!
* 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) 2002-2013 Pentaho Corporation.. All rights reserved.
*/
package org.pentaho.reporting.designer.core.util.undo;
import org.pentaho.reporting.designer.core.editor.ReportDocumentContext;
import org.pentaho.reporting.engine.classic.core.AbstractReportDefinition;
import org.pentaho.reporting.engine.classic.core.CompoundDataFactory;
import org.pentaho.reporting.engine.classic.core.DataFactory;
/**
* Todo: Document Me
*
* @author Thomas Morgner
*/
public class DataSourceEditUndoEntry implements UndoEntry
{
private int position;
private DataFactory oldElement;
private DataFactory newElement;
public DataSourceEditUndoEntry(final int position,
final DataFactory oldElement,
final DataFactory newElement)
{
this.position = position;
this.oldElement = oldElement;
this.newElement = newElement;
}
public void undo(final ReportDocumentContext renderContext)
{
final AbstractReportDefinition abstractReportDefinition = renderContext.getReportDefinition();
final DataFactory dataFactory = abstractReportDefinition.getDataFactory();
if (dataFactory instanceof CompoundDataFactory == false)
{
throw new IllegalStateException();
}
final CompoundDataFactory cdf = (CompoundDataFactory) dataFactory;
if (newElement != null)
{
cdf.remove(position);
abstractReportDefinition.notifyNodeChildRemoved(newElement);
}
if (oldElement != null)
{
cdf.add(position, oldElement);
abstractReportDefinition.notifyNodeChildAdded(oldElement);
}
}
public void redo(final ReportDocumentContext renderContext)
{
final AbstractReportDefinition abstractReportDefinition = renderContext.getReportDefinition();
final DataFactory dataFactory = abstractReportDefinition.getDataFactory();
if (dataFactory instanceof CompoundDataFactory == false)
{
throw new IllegalStateException();
}
final CompoundDataFactory cdf = (CompoundDataFactory) dataFactory;
if (oldElement != null)
{
cdf.remove(position);
abstractReportDefinition.notifyNodeChildRemoved(oldElement);
}
if (newElement != null)
{
cdf.add(position, newElement);
abstractReportDefinition.notifyNodeChildAdded(newElement);
}
}
public UndoEntry merge(final UndoEntry newEntry)
{
return null;
}
}