/*
* 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 - 2013 Object Refinery Ltd, Pentaho Corporation and Contributors.. All rights reserved.
*/
package org.pentaho.reporting.engine.classic.core.filter;
import java.awt.Shape;
import org.pentaho.reporting.engine.classic.core.ReportElement;
import org.pentaho.reporting.engine.classic.core.function.ExpressionRuntime;
/**
* A shape filter.
*
* @author Thomas Morgner.
*/
public class ShapeFilter implements DataFilter {
/**
* The data source.
*/
private DataSource dataSource;
/**
* Default constructor.
*/
public ShapeFilter() {
}
/**
* Returns the data source for the filter.
*
* @return The data source.
*/
public DataSource getDataSource() {
return dataSource;
}
/**
* Sets the data source for the filter.
*
* @param dataSource
* The data source.
*/
public void setDataSource( final DataSource dataSource ) {
this.dataSource = dataSource;
}
/**
* Returns the current value for the data source.
* <P>
* The returned object, unless it is null, will be an instance of ImageReference.
*
* @param runtime
* the expression runtime that is used to evaluate formulas and expressions when computing the value of this
* filter.
* @param element
* @return The value.
*/
public Object getValue( final ExpressionRuntime runtime, final ReportElement element ) {
final DataSource ds = getDataSource();
if ( ds == null ) {
return null;
}
final Object o = ds.getValue( runtime, element );
if ( o instanceof Shape ) {
return o;
}
return null;
}
/**
* Clones the filter.
*
* @return A clone of this filter.
* @throws CloneNotSupportedException
* this should never happen.
*/
public ShapeFilter clone() throws CloneNotSupportedException {
final ShapeFilter r = (ShapeFilter) super.clone();
if ( dataSource != null ) {
r.dataSource = dataSource.clone();
}
return r;
}
}