package cz.frantovo.hrisniciSpameri.grafy;

 import de.laures.cewolf.DatasetProduceException;

 import de.laures.cewolf.DatasetProducer;

 import de.laures.cewolf.links.CategoryItemLinkGenerator;

 import de.laures.cewolf.tooltips.CategoryToolTipGenerator;

 import java.io.Serializable;

 import java.util.Calendar;

 import java.util.Date;

 import java.util.Map;

 import org.jfree.data.category.CategoryDataset;

 import org.jfree.data.time.Day;

 import org.jfree.data.time.TimeSeries;

 import org.jfree.data.time.TimeSeriesCollection;

 import org.jfree.data.xy.XYDataset;

 /**

  *

  * @author fiki

  */

 public class CasovyGrafUtoku implements DatasetProducer, CategoryToolTipGenerator, CategoryItemLinkGenerator, Serializable {

     private static final long serialVersionUID = -9133218147909088777L;

     public XYDataset produceDataset(Map params) throws DatasetProduceException {

         System.setProperty("java.awt.headless", "true");

         TimeSeries timeseries = new TimeSeries("fond", org.jfree.data.time.Day.class);

         TimeSeriesCollection dataset = new TimeSeriesCollection();

         Calendar datum = Calendar.getInstance();

         for (int i = 0; i < 11; i++) {

             datum.add(Calendar.DAY_OF_YEAR, -1);

             double nahodneCislo = 100 - 10 * i - 20 * Math.random();

             timeseries.add(new Day(datum.getTime()), nahodneCislo);

         }

         dataset.addSeries(timeseries);

         return dataset;

     }

     public boolean hasExpired(Map params, Date since) {

         return (System.currentTimeMillis() - since.getTime()) > 5000;

     }

     public String getProducerId() {

         return this.getClass().getSimpleName();

     }

     public String generateToolTip(CategoryDataset data, int series, int item) {

         return "";

     }

     public String generateLink(Object dataset, int series, Object category) {

         return "";

     }

 }