/*!
* 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.editor.report.elements;
import org.pentaho.reporting.designer.core.editor.report.AbstractReportElementDragHandler;
import org.pentaho.reporting.designer.core.editor.report.ReportElementEditorContext;
import org.pentaho.reporting.engine.classic.core.Element;
import org.pentaho.reporting.engine.classic.core.RootLevelBand;
import org.pentaho.reporting.engine.classic.core.metadata.ElementMetaData;
import java.awt.dnd.DropTargetEvent;
import java.awt.geom.Point2D;
/**
* Base drag handler to handle various sub-reports like crosstabs
*
* @author Sulaiman Karmali
*/
public abstract class AbstractSubReportElementDragHandler extends AbstractReportElementDragHandler {
public AbstractSubReportElementDragHandler() {
}
protected boolean isFilteredDropZone( final DropTargetEvent event,
final ReportElementEditorContext dragContext,
final ElementMetaData elementMetaData,
final Point2D point ) {
final Element rootBand = findRootBand( dragContext, point );
final ElementMetaData metaData = rootBand.getElementType().getMetaData();
final ElementMetaData.TypeClassification reportElementType = metaData.getReportElementType();
if ( reportElementType == ElementMetaData.TypeClassification.HEADER ||
reportElementType == ElementMetaData.TypeClassification.FOOTER ) {
return true;
}
return false;
}
protected Element findRootBand( final ReportElementEditorContext dragContext,
final Point2D point ) {
Element element = dragContext.getElementForLocation( point, false );
while ( element != null && ( ( element instanceof RootLevelBand ) == false ) ) {
element = element.getParent();
}
if ( element != null ) {
return element;
}
return dragContext.getDefaultElement();
}
}