/*
 * SimpleTableListenerDemo.java requires no other files.
 */

import javax.swing.event.*;
import javax.swing.table.TableModel;
import javax.swing.table.DefaultTableModel;
import javax.swing.table.DefaultTableCellRenderer;

import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JLabel;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import java.awt.Dimension;
import java.awt.GridLayout;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;

public class SimpleTableListenerDemo extends JPanel implements TableModelListener {

  public void tableChanged(TableModelEvent e) {
    int row = e.getFirstRow();
    int column = e.getColumn();
    TableModel model = (TableModel)e.getSource();
    String columnName = model.getColumnName(column);
    Object data = model.getValueAt(row, column);

    // Do something with the data...

    System.out.println("changed " + row + "/" + column + " " + columnName + " = " + data);
  }


  public SimpleTableListenerDemo() {
    super(new GridLayout(1,0));

    String[] columnNames = {"First Name",
			    "Last Name",
			    "Sport",
			    "# of Years"
			    ,"Vegetarian"
    };

    Object[][] data = {
	{"Mary", "Campione",
	 "Snowboarding", new Integer(5), true},
	{"Alison", "Huml",
	 "Rowing", new Integer(3), new Boolean(false)},
	{"Kathy", "Walrath",
	 "Knitting", new Integer(2), new Boolean(true)},
	{"Sharon", "Zakhour",
	 "Speed reading", new Integer(20), new Boolean(false)},
	{"Philip", "Milne",
	 "Pool", new Integer(10), new Boolean(true)}
    };

    final JTable table = new JTable(data, columnNames);
    table.setPreferredScrollableViewportSize(new Dimension(500, 70));

    // right-align column "# of Years" 
    DefaultTableCellRenderer renderer = new DefaultTableCellRenderer();
    renderer.setHorizontalAlignment(JLabel.RIGHT);
    table.getColumnModel().getColumn(3).setCellRenderer(renderer);

    table.getModel().addTableModelListener(this);

    TableModel tableModel = table.getModel();
    int k = tableModel.getColumnCount();
    for(int i = 0; i < k; i++) {
      System.out.println("type for column " + i + " " + tableModel.getColumnClass(i));
    }

    //Create the scroll pane and add the table to it.
    JScrollPane scrollPane = new JScrollPane(table);

    //Add the scroll pane to this panel.
    add(scrollPane);
  }

  /**
   * Create the GUI and show it.  For thread safety,
   * this method should be invoked from the
   * event-dispatching thread.
   */
  private static void createAndShowGUI() {
    //Create and set up the window.
    JFrame frame = new JFrame("SimpleTableListenerDemo");
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

    //Create and set up the content pane.
    SimpleTableListenerDemo newContentPane = new SimpleTableListenerDemo();
    newContentPane.setOpaque(true); //content panes must be opaque
    frame.setContentPane(newContentPane);

    //Display the window.
    frame.pack();
    frame.setVisible(true);
  }

  public static void main(String[] args) {
    //Schedule a job for the event-dispatching thread:
    //creating and showing this application's GUI.
    javax.swing.SwingUtilities.invokeLater(new Runnable() {
	  public void run() {
	    createAndShowGUI();
	  }
        });
  }
}