/*!
* 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 java.util.List;
import org.pentaho.reporting.engine.classic.core.Element;
import org.pentaho.reporting.engine.classic.core.ReportElement;
import org.pentaho.reporting.engine.classic.core.style.ElementStyleSheet;
import org.pentaho.reporting.engine.classic.core.style.StyleKey;
import org.pentaho.reporting.engine.classic.core.util.InstanceID;
/**
* Todo: Document Me
*
* @author Thomas Morgner
*/
public class MassElementStyleUndoEntryBuilder
{
private ReportElement[] visualElements;
private Object[][] styleProperties;
public MassElementStyleUndoEntryBuilder(final List<? extends Element> visualElements)
{
this.visualElements = visualElements.toArray(new ReportElement[visualElements.size()]);
this.styleProperties = new Object[visualElements.size()][];
for (int i = 0; i < visualElements.size(); i++)
{
final ReportElement visualElement = visualElements.get(i);
styleProperties[i] = computeStyleChangeSet(visualElement);
}
}
public MassElementStyleUndoEntry finish()
{
final Object[][] currentStyle = new Object[visualElements.length][];
final InstanceID[] targets = new InstanceID[visualElements.length];
for (int i = 0; i < visualElements.length; i++)
{
final ReportElement visualElement = visualElements[i];
currentStyle[i] = computeStyleChangeSet(visualElement);
targets[i] = visualElement.getObjectID();
}
return new MassElementStyleUndoEntry(targets, styleProperties, currentStyle);
}
public static Object[] computeStyleChangeSet(final ReportElement visualElement)
{
final ElementStyleSheet styleSheet = visualElement.getStyle();
final StyleKey[] definedPropertyNamesArray = styleSheet.getDefinedPropertyNamesArray();
final Object[] retval = new Object[StyleKey.getDefinedStyleKeyCount()];
for (int i = 0; i < definedPropertyNamesArray.length; i++)
{
final StyleKey styleKey = definedPropertyNamesArray[i];
if (styleKey == null)
{
continue;
}
if (styleSheet.isLocalKey(styleKey))
{
retval[styleKey.identifier] = styleSheet.getStyleProperty(styleKey);
}
}
return retval;
}
}