JTable ListSelectionListener

[Alex Kravets]

I have three JTables stacked one on the top of other. Only lower JTable has horizontal scroll bar and listener is attached to it. When this scroll bar is scrolled, the other two top tables scroll as well:

 
final JScrollBar bar1 = scroll.getHorizontalScrollBar
JScrollBar bar2 = fixedScroll.getHorizontalScrollBar();
bar2.addAdjustmentListener(new AdjustmentListener() {
       public void adjustmentValueChanged(AdjustmentEvent e) {
              bar1.setValue(e.getValue());
       }
});
    
final JScrollBar auxTableScroll = infoTableScroll.getHorizontalScrollBar();
JScrollBar SOTotalTableScroll = fixedScroll.getHorizontalScrollBar();
SOTotalTableScroll.addAdjustmentListener(new AdjustmentListener() {
 public void adjustmentValueChanged(AdjustmentEvent e) {
                   auxTableScroll.setValue(e.getValue());
 }
}); 

However, when I use arrow keys to move within the table the listener no longer works because I am not using scroll bar. Now I got another listener from sun's website that detects when table is being scrolled with arrow and I get the current column selected, but how do I apply this information to other two tables?

  
SOTable.setColumnSelectionAllowed(true);
   ListSelectionModel colSM =  SOTable.getColumnModel().getSelectionModel();
   colSM.addListSelectionListener(new ListSelectionListener() {
                public void valueChanged(ListSelectionEvent e) {
                    ListSelectionModel lsm = (ListSelectionModel)e.getSource();
                    if (lsm.isSelectionEmpty()) {
                        System.out.println("No columns are selected.");
                    } else {
                        int selectedCol = lsm.getMinSelectionIndex();
                        System.out.println("Column " + selectedCol+ " is now selected.");
                    }
    }
});

thanks,
Alex

[ April 04, 2005: Message edited by: Alex Kravets ]

[ April 04, 2005: Message edited by: Alex Kravets ]
[ April 04, 2005: Message edited by: Alex Kravets ]

[Michael Dunn]

don't know if this will work in JTables, but worth a try
(the 'pad' part is just to trigger the horizontal scrollbar)

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
 
class Testing extends JFrame
{
  public Testing()
  {
    JScrollPane sp1 = new JScrollPane(new ScrollPanel());
    JScrollBar vBar1 = sp1.getVerticalScrollBar();
    JScrollBar hBar1 = sp1.getHorizontalScrollBar();
    JScrollPane sp2 = new JScrollPane(new ScrollPanel());
    JScrollBar vBar2 = sp2.getVerticalScrollBar();
    JScrollBar hBar2 = sp2.getHorizontalScrollBar();
    JScrollPane sp3 = new JScrollPane(new ScrollPanel());
    JScrollBar vBar3 = sp3.getVerticalScrollBar();
    JScrollBar hBar3 = sp3.getHorizontalScrollBar();
    vBar2.setModel(vBar1.getModel()); //<--------------synchronize
    vBar3.setModel(vBar1.getModel()); //<--------------synchronize
    hBar2.setModel(hBar1.getModel()); //<--------------synchronize
    hBar3.setModel(hBar1.getModel()); //<--------------synchronize
    getContentPane().setLayout(new GridLayout(1,3));
    getContentPane().add(sp1);
    getContentPane().add(sp2);
    getContentPane().add(sp3);
    setDefaultCloseOperation(EXIT_ON_CLOSE);
    setSize(400,300);
    setLocation(300,200);
  }
  public static void main(String[] args) {new Testing().setVisible(true);}
}
class ScrollPanel extends JPanel
{
  public ScrollPanel()
  {
    setLayout(new GridLayout(50,1));
    String pad = "                                                         ";
    for(int x = 0; x < 50; x++) add(new JLabel(pad+(x+1)));
  }
}