PNGChartDemo.java

// 
// Copyright 2011 Taha Hafeez Siddiqi
// 
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
// 
//   http://www.apache.org/licenses/LICENSE-2.0
// 
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// 

package com.googlecode.tawus.jfreechart.pages;

import org.apache.tapestry5.annotations.InjectComponent;
import org.apache.tapestry5.annotations.Property;
import org.apache.tapestry5.annotations.RequestParameter;
import org.apache.tapestry5.corelib.components.Zone;
import org.jfree.chart.ChartFactory;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.plot.PlotOrientation;
import org.jfree.data.category.DefaultCategoryDataset;

public class PNGChartDemo
{
   
   @InjectComponent
   private Zone myZone;
   
   @SuppressWarnings("unused")
   @Property
   private String message;
   
   public JFreeChart getChart()
   {
      DefaultCategoryDataset dataset = new DefaultCategoryDataset();
      dataset.setValue(5, "Sales", "2007");
      dataset.setValue(6, "Sales", "2008");
      
      JFreeChart chart = ChartFactory.createBarChart("BarChart"
            , "Year", "Sales", dataset, PlotOrientation.VERTICAL, false, true, true);
      
      return chart;
   }
   
   Object onSelectMapFromChartWithMap(@RequestParameter("series")String series, 
         @RequestParameter("category")String category)
   {
      message = String.format("Series = %s, Category = %s", series, category);
      return myZone.getBody();
   }
   
}