Name: gm110360 Date: 05/03/2004


FULL PRODUCT VERSION :
java version "1.4.2_04"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.2_04-b05)
Java HotSpot(TM) Client VM (build 1.4.2_04-b05, mixed mode)

FULL OS VERSION :
SunOS sunburn.dstc.edu.au 5.8 Generic_108528-14 sun4u sparc

A DESCRIPTION OF THE PROBLEM :
javax.swing.table.DefaultTableCellRenderer will ignore a border setting applied with the inherited setBorder() (see test case example). Instead, it will ALWAYS render the cell using the class static instance variable "noFocusBorder".

Setting a tool tip on a table header cell required a per-heading cell renderer instance. The bug causes extra (non-obvious) code to render the header cells differently from non-focus table cells. This is most annoying when a tool tip is required on a column heading. The work-around requires that the default renderer be subclassed and the getTableCellRendererComponent() be over-ridden (see workaround example).

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
1. Compile Pdemo.java and execute (use ^C to terminate it)


ACTUAL -
1. Observe that while the column headers have tool tips, they are rendered just like a no-focus cell.


REPRODUCIBILITY :
This bug can be reproduced always.

---------- BEGIN SOURCE ----------
import javax.swing.*;
import javax.swing.table.*;
import javax.swing.border.*;

public class Pdemo
{
  final static Border border = new BevelBorder(BevelBorder.RAISED);

  public static void main (String [] args)
  {
    TableModel data = new AbstractTableModel () {
      public int getColumnCount() { return 2; }
      public int getRowCount() { return 5; }
      public Object getValueAt(int row, int col) {
        return new Integer((row*10)+col);
      }
      public String getColumnName (int col) {
        return new String("Col " + col);
      }
    };

    JFrame frame = new JFrame();
    JTable table = new JTable(data);

    TableColumnModel tcm = table.getColumnModel();
    for (int idx = 0; idx < data.getColumnCount(); idx++) {
      DefaultTableCellRenderer tcr = new DefaultTableCellRenderer();
      tcr.setToolTipText("This is Column " + idx);
      tcr.setBorder(border);
      tcm.getColumn(idx).setHeaderRenderer(tcr);
    }

    JScrollPane jsp = new JScrollPane(table);
    frame.getContentPane().add(jsp);
    frame.pack();
    frame.setVisible(true);
  }
} // endof Pdemo

---------- END SOURCE ----------

CUSTOMER SUBMITTED WORKAROUND :
/*
 Examination of the DefaultTableCellRenderer source shows why the setBorder
 value will always be ignored. Associating a tool tip with a table header
 requires a per-header cell renderer. To render a border other than the
 hard-wired one required over-riding the getTableCellRendererComponent method
 as shown in the example below.
*/

import javax.swing.*;
import javax.swing.table.*;
import javax.swing.border.*;

public class Pdemo
{
  final static Border border = new BevelBorder(BevelBorder.RAISED);

  public static void main (String [] args)
  {
    TableModel data = new AbstractTableModel () {
      public int getColumnCount() { return 2; }
      public int getRowCount() { return 5; }
      public Object getValueAt(int row, int col) {
        return new Integer((row*10)+col);
      }
      public String getColumnName (int col) {
        return new String("Col " + col);
      }
    };

    JFrame frame = new JFrame();
    JTable table = new JTable(data);

    TableColumnModel tcm = table.getColumnModel();
    for (int idx = 0; idx < data.getColumnCount(); idx++) {
      DefaultTableCellRenderer tcr = new DefaultTableCellRenderer();
      tcr.setToolTipText("This is Column " + idx);
      tcr.setBorder(border);
      tcm.getColumn(idx).setHeaderRenderer(tcr);
    }

    JScrollPane jsp = new JScrollPane(table);
    frame.getContentPane().add(jsp);
    frame.pack();
    frame.setVisible(true);
  }
} // endof Pdemo1
(Incident Review ID: 198626)
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