graphview_components.GanttChart.java Source code

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Here is the source code for graphview_components.GanttChart.java

Source

package graphview_components;

import java.util.ArrayList;

import javax.swing.JFrame;

import org.jfree.chart.ChartFactory;
import org.jfree.chart.ChartPanel;
import org.jfree.chart.JFreeChart;
import org.jfree.data.category.IntervalCategoryDataset;
import org.jfree.data.gantt.Task;
import org.jfree.data.gantt.TaskSeries;
import org.jfree.data.gantt.TaskSeriesCollection;
import org.jfree.data.time.SimpleTimePeriod;

import resources.Activities;
import saver_loader.DataResource;

/* ===========================================================
 * JFreeChart : a free chart library for the Java(tm) platform
 * ===========================================================
 *
 * (C) Copyright 2000-2004, by Object Refinery Limited and Contributors.
 *
 * Project Info:  http://www.jfree.org/jfreechart/index.html
 *
 * This library is free software; you can redistribute it and/or modify it under the terms
 * of the GNU Lesser General Public License as published by the Free Software Foundation;
 * either version 2.1 of the License, or (at your option) any later version.
 *
 * This library 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.
 *
 * You should have received a copy of the GNU Lesser General Public License along with this
 * library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
 * Boston, MA 02111-1307, USA.
 *
 * [Java is a trademark or registered trademark of Sun Microsystems, Inc. 
 * in the United States and other countries.]
 *
 * ---------------
 * GanttDemo1.java
 * ---------------
 * (C) Copyright 2002-2004, by Object Refinery Limited.
 *
 * Original Author:  David Gilbert (for Object Refinery Limited);
 * Contributor(s):   -;
 *
 * $Id: GanttDemo1.java,v 1.12 2004/04/26 19:11:54 taqua Exp $
 *
 * Changes
 * -------
 * 06-Jun-2002 : Version 1 (DG);
 * 10-Oct-2002 : Modified to use DemoDatasetFactory (DG);
 * 10-Jan-2003 : Renamed GanttDemo --> GanttDemo1 (DG);
 * 16-Oct-2003 : Shifted dataset from DemoDatasetFactory to this class (DG);
 *
 */

public class GanttChart extends JFrame {

    /**
     * 
     */
    private static final long serialVersionUID = 1L;

    /**
     * Creates a new chart.
     *
     * @param title
     *            the frame title.
     */
    public GanttChart(final String title) {
        super(title);

        ArrayList<Activities> activities = DataResource.selectedProject.getActivityList();

        final IntervalCategoryDataset dataset = createDataset(activities);
        final JFreeChart chart = createChart(dataset, DataResource.selectedProject.getProjectName());

        final ChartPanel chartPanel = new ChartPanel(chart);
        chartPanel.setPreferredSize(new java.awt.Dimension(500, 270));
        setContentPane(chartPanel);
    }

    /**
     * Creates a dataset for a Gantt chart.
     *
     * @return The dataset.
     */
    public static IntervalCategoryDataset createDataset(ArrayList<Activities> activities) {
        final TaskSeries scheduled = new TaskSeries("Scheduled");
        for (Activities activity : activities) {
            scheduled.add(new Task(activity.getLabel(),
                    new SimpleTimePeriod(activity.getStartDate().getTime(), activity.getEndDate().getTime())));
        }

        final TaskSeriesCollection collection = new TaskSeriesCollection();
        collection.add(scheduled);

        return collection;
    }

    /**
     * Creates a chart.
     * 
     * @param dataset
     *            the dataset.
     * 
     * @return The chart.
     */
    private JFreeChart createChart(final IntervalCategoryDataset dataset, String title) {
        final JFreeChart chart = ChartFactory.createGanttChart(title, // chart
                // title
                "Activities", // domain axis label
                "Date", // range axis label
                dataset, // data
                true, // include legend
                true, // tooltips
                false // urls
        );

        return chart;
    }
}