/*
* 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.extensions.modules.sparklines;
import java.util.Locale;
import org.pentaho.reporting.engine.classic.core.AttributeNames;
import org.pentaho.reporting.engine.classic.core.ReportElement;
import org.pentaho.reporting.engine.classic.core.filter.types.ContentType;
import org.pentaho.reporting.engine.classic.core.filter.types.ElementTypeUtils;
import org.pentaho.reporting.engine.classic.core.function.ExpressionRuntime;
import org.pentaho.reporting.libraries.libsparklines.BarGraphDrawable;
/**
* This class is the Element type implementation of Sparkline bar graph.<br/> This Element type allows the configuration
* of the default bars color, the bar color above average data points, the color of the last bar and the spacing between
* data points.
*
* @author Thomas Morgner
*/
public class BarSparklineType extends ContentType
{
public static final BarSparklineType INSTANCE = new BarSparklineType();
public BarSparklineType()
{
super("bar-sparkline");
}
/**
* Returns the current value for the data source.
*
* @param runtime the expression runtime that is used to evaluate formulas and expressions when computing the value of
* this filter.
* @param element the element for which the data is computed.
* @return the value.
*/
public Object getValue(final ExpressionRuntime runtime, final ReportElement element)
{
final Object value = ElementTypeUtils.queryFieldOrValue(runtime, element);
final Number[] numbers = ElementTypeUtils.getData(value);
if (numbers == null)
{
final Object nullValue = element.getAttribute(AttributeNames.Core.NAMESPACE, AttributeNames.Core.NULL_VALUE);
return filter(runtime, element, nullValue);
}
final int spacing = ElementTypeUtils.getIntAttribute
(element, SparklineAttributeNames.NAMESPACE, SparklineAttributeNames.SPACING, 2);
final BarGraphDrawable drawable = new BarGraphDrawable();
drawable.setData(numbers);
drawable.setSpacing(spacing);
return new BarSparklinesWrapper(drawable);
}
public Object getDesignValue(final ExpressionRuntime runtime, final ReportElement element)
{
final Object value = ElementTypeUtils.queryStaticValue(element);
Number[] numbers = ElementTypeUtils.getData(value);
if (numbers == null)
{
numbers = new Number[]
{new Integer(10), new Integer(5),
new Integer(6), new Integer(3),
new Integer(1), new Integer(2),
new Integer(7), new Integer(9)};
}
final int spacing = ElementTypeUtils.getIntAttribute
(element, SparklineAttributeNames.NAMESPACE, SparklineAttributeNames.SPACING, 2);
final BarGraphDrawable drawable = new BarGraphDrawable();
drawable.setData(numbers);
drawable.setSpacing(spacing);
return new BarSparklinesWrapper(drawable);
}
public void configureDesignTimeDefaults(final ReportElement element, final Locale locale)
{
}
}