www.pudn.com > jfreereport-0.8.3f.zip > PercentageDemo.java
/**
* ========================================
* JFreeReport : a free Java report library
* ========================================
*
* Project Info: http://www.jfree.org/jfreereport/index.html
* Project Lead: Thomas Morgner;
*
* (C) Copyright 2000-2002, by Simba Management Limited and Contributors.
*
* 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.
*
* -------------------
* PercentageDemo.java
* -------------------
* (C)opyright 2003, by Simba Management Limited.
*
* Original Author: David Gilbert (for Simba Management Limited);
* Contributor(s): -;
*
* $Id: PercentageDemo.java,v 1.9.2.1 2003/08/24 14:18:07 taqua Exp $
*
* Changes
* -------
* 04-Apr-2003 : Version 1 (DG);
*
*/
package com.jrefinery.report.demo;
import java.awt.BorderLayout;
import java.net.URL;
import java.text.MessageFormat;
import javax.swing.BorderFactory;
import javax.swing.JButton;
import javax.swing.JMenu;
import javax.swing.JMenuBar;
import javax.swing.JMenuItem;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.JTextArea;
import javax.swing.table.DefaultTableModel;
import javax.swing.table.TableModel;
import com.jrefinery.report.JFreeReport;
import com.jrefinery.report.ReportProcessingException;
import com.jrefinery.report.demo.helper.AbstractDemoFrame;
import com.jrefinery.report.io.ReportGenerator;
import com.jrefinery.report.preview.PreviewFrame;
import com.jrefinery.report.util.ActionButton;
import com.jrefinery.report.util.ActionMenuItem;
import com.jrefinery.report.util.Log;
import org.jfree.ui.RefineryUtilities;
/**
* A simple report where column 3 displays (column 1 / column 2) as a percentage.
*
* @author David Gilbert
*/
public class PercentageDemo extends AbstractDemoFrame
{
/** The data for the report. */
private TableModel data;
/**
* Constructs the demo application.
*
* @param title the frame title.
*/
public PercentageDemo(final String title)
{
setTitle(title);
setJMenuBar(createMenuBar());
setContentPane(createContent());
}
/**
* Creates a menu bar.
*
* @return the menu bar.
*/
public JMenuBar createMenuBar()
{
final JMenuBar mb = new JMenuBar();
final JMenu fileMenu = createJMenuItem("menu.file");
final JMenuItem previewItem = new ActionMenuItem(getPreviewAction());
final JMenuItem exitItem = new ActionMenuItem(getCloseAction());
fileMenu.add(previewItem);
fileMenu.addSeparator();
fileMenu.add(exitItem);
mb.add(fileMenu);
return mb;
}
/**
* Creates the content for the application frame.
*
* @return a panel containing the basic user interface.
*/
public JPanel createContent()
{
final JPanel content = new JPanel(new BorderLayout());
content.setBorder(BorderFactory.createEmptyBorder(4, 4, 4, 4));
final String d = "In this demo, the TableModel contains two columns A and B. The generated "
+ "report displays the values in these columns, plus a third value (A/B) "
+ "formatted as a percentage.";
final JTextArea textArea = new JTextArea(d);
textArea.setLineWrap(true);
textArea.setWrapStyleWord(true);
textArea.setEditable(false);
final JScrollPane scroll = new JScrollPane(textArea);
scroll.setHorizontalScrollBarPolicy(JScrollPane.HORIZONTAL_SCROLLBAR_NEVER);
this.data = createData();
final JTable table = new JTable(data);
final JScrollPane scrollPane = new JScrollPane(table);
final JButton previewButton = new ActionButton(getPreviewAction());
content.add(scroll, BorderLayout.NORTH);
content.add(scrollPane);
content.add(previewButton, BorderLayout.SOUTH);
return content;
}
/**
* Displays a print preview screen for the sample report.
*/
protected void attemptPreview()
{
final URL in = getClass().getResource("/com/jrefinery/report/demo/PercentageDemo.xml");
if (in == null)
{
JOptionPane.showMessageDialog(this,
MessageFormat.format(getResources().getString("report.definitionnotfound"),
new Object[]{in}),
getResources().getString("error"), JOptionPane.ERROR_MESSAGE);
}
final JFreeReport report;
try
{
report = parseReport(in);
report.setData(this.data);
}
catch (Exception ex)
{
showExceptionDialog("report.definitionfailure", ex);
return;
}
try
{
final PreviewFrame frame = new PreviewFrame(report);
frame.getBase().setToolbarFloatable(true);
frame.pack();
RefineryUtilities.positionFrameRandomly(frame);
frame.setVisible(true);
frame.requestFocus();
}
catch (ReportProcessingException pre)
{
showExceptionDialog("report.previewfailure", pre);
}
}
/**
* Reads the report from the specified template file.
*
* @param templateURL the template location.
*
* @return a report.
*/
private JFreeReport parseReport(final URL templateURL)
{
JFreeReport result = null;
final ReportGenerator generator = ReportGenerator.getInstance();
try
{
result = generator.parseReport(templateURL);
}
catch (Exception e)
{
Log.error("Failed to parse the report definition", e);
}
return result;
}
/**
* Creates a sample dataset.
*
* @return A TableModel.
*/
public static TableModel createData()
{
final DefaultTableModel data = new DefaultTableModel();
data.addColumn("A");
data.addColumn("B");
data.addRow(new Object[]{new Double(43.0), new Double(127.5)});
data.addRow(new Object[]{new Double(57.0), new Double(108.5)});
data.addRow(new Object[]{new Double(35.0), new Double(164.8)});
data.addRow(new Object[]{new Double(86.0), new Double(164.0)});
data.addRow(new Object[]{new Double(12.0), new Double(103.2)});
return data;
}
/**
* Entry point for running the demo application...
*
* @param args ignored.
*/
public static void main(final String[] args)
{
final PercentageDemo frame = new PercentageDemo("Percentage Demo");
frame.pack();
RefineryUtilities.centerFrameOnScreen(frame);
frame.setVisible(true);
}
}