JTable with RadioButton Headers

[jefff willis]

I've seen examples of JTables with push button header examples. They work well enough but I could really use a RadioButton header.

Has anyone ever don't anything like that?

I'm including some code that I use for a push button header. I've tried to adapt a RadioButton header from this code but I have had much luck.

 
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.table.*;
 

public class TablePushButton extends JPanel
{
 

   public TablePushButton()
   {
     setLayout(new BorderLayout());
     String[] headerStr = {"Push","me","here"};
 
     DefaultTableModel dm = new DefaultTableModel(headerStr, 4);
     JTable table = new JTable(dm);
     ButtonHeaderRenderer renderer = new ButtonHeaderRenderer();
     TableColumnModel model = table.getColumnModel();
     int n = headerStr.length;
 
     for (int i=0;i<n;i++) {
       model.getColumn(i).setHeaderRenderer(renderer);
     }
 
     JTableHeader header = table.getTableHeader();
     header.addMouseListener(new HeaderListener(header,renderer));
     JScrollPane pane = new JScrollPane(table);
     add(pane, BorderLayout.CENTER);
   }
 
   public static void main(String[] args) {
     JFrame f= new JFrame("PushableHeaderTable Example");
     f.getContentPane().add(new TablePushButton(), BorderLayout.CENTER);
     f.setSize(400, 100);
     f.setVisible(true);
     f.addWindowListener(new WindowAdapter() {
       public void windowClosing(WindowEvent e) {System.exit(0);}
     });
   }
 
   class HeaderListener extends MouseAdapter
   {
     JTableHeader   header;
     ButtonHeaderRenderer renderer;
 
     HeaderListener(JTableHeader header,ButtonHeaderRenderer renderer) {
       this.header   = header;
       this.renderer = renderer;
     }
 
     public void mousePressed(MouseEvent e) {
       int col = header.columnAtPoint(e.getPoint());
       renderer.setPressedColumn(col);
       header.repaint();
 
       System.out.println("Column Pushed " + col);
     }
 
     public void mouseReleased(MouseEvent e) {
       int col = header.columnAtPoint(e.getPoint());
       renderer.setPressedColumn(-1);                // clear
       header.repaint();
     }
   }
 
   class ButtonHeaderRenderer extends JButton implements TableCellRenderer {
     int pushedColumn;
 
     public ButtonHeaderRenderer() {
       pushedColumn   = -1;
       setMargin(new Insets(0,0,0,0));
     }
 
     public Component getTableCellRendererComponent(JTable table, Object value,
                    boolean isSelected, boolean hasFocus, int row, int column) {
       setText((value ==null) ? "" : value.toString());
       boolean isPressed = (column == pushedColumn);
       getModel().setPressed(isPressed);
       getModel().setArmed(isPressed);
       return this;
     }
 
     public void setPressedColumn(int col) {
       pushedColumn = col;
     }
   }
}

[Tim McGuire]

I got radio buttons to show up in your table headers by having it extend JRadioButton instead of JButton:
You will need change the listener to work better with radio buttons.

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.table.*;
 
public class TablePushButton extends JPanel {
    public TablePushButton() {
        setLayout(new BorderLayout());
        String[] headerStr = {"Push", "me", "here"};
        DefaultTableModel dm = new DefaultTableModel(headerStr, 4);
        JTable table = new JTable(dm);
        RadioHeaderRenderer renderer = new RadioHeaderRenderer();
        //ButtonHeaderRenderer renderer = new ButtonHeaderRenderer();
        TableColumnModel model = table.getColumnModel();
        int n = headerStr.length;
        for (int i = 0; i < n; i++) {
            model.getColumn(i).setHeaderRenderer(renderer);
        }
        JTableHeader header = table.getTableHeader();
        header.addMouseListener(new HeaderListener(header, renderer));
        JScrollPane pane = new JScrollPane(table);
        add(pane, BorderLayout.CENTER);
    }
 
    public static void main(String[] args) {
        JFrame f = new JFrame("PushableHeaderTable Example");
        f.getContentPane().add(new TablePushButton(), BorderLayout.CENTER);
        f.setSize(400, 100);
        f.setVisible(true);
        f.addWindowListener(new WindowAdapter() {
            public void windowClosing(WindowEvent e) {
                System.exit(0);
            }
        });
    }
 
    class HeaderListener extends MouseAdapter {
        JTableHeader header;
        RadioHeaderRenderer renderer;
        //ButtonHeaderRenderer renderer;
 
        HeaderListener(JTableHeader header, RadioHeaderRenderer renderer) {
            this.header = header;
            this.renderer = renderer;
        }
 
        public void mousePressed(MouseEvent e) {
            int col = header.columnAtPoint(e.getPoint());
            renderer.setPressedColumn(col);
            header.repaint();
            System.out.println("Column Pushed " + col);
        }
 
        public void mouseReleased(MouseEvent e) {
            int col = header.columnAtPoint(e.getPoint());
            renderer.setPressedColumn(-1);
            // clear
            header.repaint();
        }
    }
    class RadioHeaderRenderer extends JRadioButton implements TableCellRenderer{
        int pushedColumn;
 
        public RadioHeaderRenderer() {
            pushedColumn = -1;
            setMargin(new Insets(0, 0, 0, 0));
 
        }
 
        public Component getTableCellRendererComponent(JTable table,
                                                       Object value,
                                                       boolean isSelected,
                                                       boolean hasFocus,
                                                       int row,
                                                       int column) {
            setText((value == null) ? "" : value.toString());
            boolean isPressed = (column == pushedColumn);
            getModel().setPressed(isPressed);
            getModel().setArmed(isPressed);
            return this;
        }
 
        public void setPressedColumn(int col) {
            pushedColumn = col;
        }
 
    }
   
}

[jefff willis]

Thanks Tim,

Thanks for the help.

My problem with the RadioButton example is that I can't seem to get them to "group."

When I press Column 1 for example, I want the other columns to be un-selected.

I'm in the process of implementing that in my mouse listener, but I was kind of hoping that the SWING components would do this for me.