/*!
* 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.plugin.jfreereport.reportcharts;
import javax.swing.table.TableModel;
import org.jfree.chart.labels.CategoryToolTipGenerator;
import org.jfree.data.category.CategoryDataset;
import org.jfree.util.Log;
import org.pentaho.reporting.engine.classic.core.StaticDataRow;
import org.pentaho.reporting.engine.classic.core.function.ExpressionRuntime;
import org.pentaho.reporting.engine.classic.core.function.FormulaExpression;
import org.pentaho.reporting.engine.classic.core.function.GenericExpressionRuntime;
import org.pentaho.reporting.engine.classic.core.function.ProcessingContext;
import org.pentaho.reporting.engine.classic.core.function.WrapperExpressionRuntime;
import org.pentaho.reporting.engine.classic.core.util.IntegerCache;
public class FormulaCategoryTooltipGenerator implements CategoryToolTipGenerator
{
private FormulaExpression formulaExpression;
private GenericExpressionRuntime runtime;
private static final String[] ADDITIONAL_COLUMN_KEYS = new String[]{
"chart::series-key", "chart::category-key",
"chart::series-index", "chart::category-index",
"chart::series-keys", "chart::category-keys",
"chart::value"
};
public FormulaCategoryTooltipGenerator(final ExpressionRuntime runtime,
final String formula)
{
this.runtime = new GenericExpressionRuntime(runtime);
this.formulaExpression = new FormulaExpression();
this.formulaExpression.setFormula(formula);
}
/**
* Generates the tool tip text for an item in a dataset. Note: in the
* current dataset implementation, each row is a series, and each column
* contains values for a particular category.
*
* @param dataset the dataset (<code>null</code> not permitted).
* @param series the series (zero-based index).
* @param category the category.
* @return The tooltip text (possibly <code>null</code>).
*/
public String generateToolTip(final CategoryDataset dataset, final int series, final int category)
{
try
{
final Comparable seriesKey = dataset.getRowKey(series);
final Comparable categoryKey = dataset.getColumnKey(category);
final Object[] categoryKeys = dataset.getColumnKeys().toArray();
final Object[] seriesKeys = dataset.getRowKeys().toArray();
final Object value = dataset.getValue(series, category);
final Object[] values = new Object[]{
seriesKey, categoryKey,
IntegerCache.getInteger(series), IntegerCache.getInteger(category),
seriesKeys, categoryKeys,
value
};
final StaticDataRow datarow = new StaticDataRow(ADDITIONAL_COLUMN_KEYS, values);
final WrapperExpressionRuntime wrapper = new WrapperExpressionRuntime(datarow , runtime);
formulaExpression.setRuntime(wrapper);
final Object o = formulaExpression.getValue();
if (o == null)
{
return null;
}
return String.valueOf(o);
} finally
{
formulaExpression.setRuntime(null);
}
}
}