/*
* 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) 2009 Pentaho Corporation. All rights reserved.
*/
package org.pentaho.reporting.designer.core.util.undo;
import org.pentaho.reporting.designer.core.editor.ReportRenderContext;
import org.pentaho.reporting.designer.core.model.ModelUtility;
import org.pentaho.reporting.engine.classic.core.Element;
import org.pentaho.reporting.engine.classic.core.Section;
import org.pentaho.reporting.engine.classic.core.util.InstanceID;
/**
* Handles insert, remove and replacement of elements. Insert: old is null, remove: new is null.
*
* @author Thomas Morgner
*/
public class SectionEditUndoEntry implements UndoEntry
{
private InstanceID target;
private int position;
private Element oldElement;
private Element newElement;
public SectionEditUndoEntry(final InstanceID target,
final int position,
final Element oldElement,
final Element newElement)
{
this.target = target;
this.position = position;
this.oldElement = oldElement;
this.newElement = newElement;
}
public void undo(final ReportRenderContext renderContext)
{
final Section elementById = (Section)
ModelUtility.findElementById(renderContext.getReportDefinition(), target);
elementById.setElementAt(position, oldElement);
}
public void redo(final ReportRenderContext renderContext)
{
final Section elementById = (Section)
ModelUtility.findElementById(renderContext.getReportDefinition(), target);
elementById.setElementAt(position, newElement);
}
public UndoEntry merge(final UndoEntry newEntry)
{
return null;
}
}