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  1. JDK
  2. JDK-5032785

XP L&F: REGRESSION: JTabbedPane.setBackgroundAt fails using System L&F in WinXP

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      Name: gm110360 Date: 04/16/2004


      FULL PRODUCT VERSION :
      D:\temp>java -version
      java version "1.4.2_01"
      Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.2_01-b06)
      Java HotSpot(TM) Client VM (build 1.4.2_01-b06, mixed mode)

      FULL OS VERSION :
      C:\>ver
      Microsoft Windows XP [Version 5.1.2600]

      It is "Windows XP Professional with Service Pack 1"

      A DESCRIPTION OF THE PROBLEM :
      JTabbedPane - setBackgroundAt does NOT set background color in Windows XP - SP1 if UIManager.getSystemLookAndFeelClassName() is used.

      If the look and feel is changed to UIManager.getCrossPlatformLookAndFeelClassName(), then setting background (using setBackgroundAt) color works fine.

      Please see sample code that I have put in the "Source Code" section, which fails to set colors for TABS under Windows XP - SP1 when using JRE 1.4.2_01.

      I also experimented and observed that setting default color for JTabbedPane does NOT work. For example, the following code fails to make TAB background yellow under Windows XP - SP1 when using JRE 1.4.2.

        uiDefaults.put("TabbedPane.background", Color.yellow);


      NOTE:
      Replacing "UIManager.getSystemLookAndFeelClassName()" in the source code with "UIManager.getCrossPlatformLookAndFeelClassName()" sets colors properly. But, we like to use for our purpose.

      STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
      Compile the source code in the "Source Code" section.

      Run it under "Windows XP Professional - Service Pack 1" that uses JRE 1.4.2_01 for running Java applications.

      EXPECTED VERSUS ACTUAL BEHAVIOR :
      EXPECTED -
      TAB "One" should be green
      TAB "Two" should be yellow
      TAB "Three" should be red
      TAB "Four" should be cyan
      ACTUAL -
      All TABs are shown in the same color with white background and colored (like, orange) border.


      REPRODUCIBILITY :
      This bug can be reproduced always.

      ---------- BEGIN SOURCE ----------
      import javax.swing.JTabbedPane;
      import javax.swing.ImageIcon;
      import javax.swing.JLabel;
      import javax.swing.JPanel;
      import javax.swing.JFrame;
      import javax.swing.UIManager;

      import java.awt.*;
      import java.awt.event.*;

      public class TEMP_TABBED_PANE extends JPanel {

          public TEMP_TABBED_PANE() {
              JTabbedPane tabbedPane = new JTabbedPane();

              Component panel1 = makeTextPanel("Blah");
              tabbedPane.addTab("One", panel1);
              tabbedPane.setSelectedIndex(0);
              tabbedPane.setBackgroundAt(0, Color.green);

              Component panel2 = makeTextPanel("Blah blah");
              tabbedPane.addTab("Two", panel2);
              tabbedPane.setBackgroundAt(1, Color.yellow);

              Component panel3 = makeTextPanel("Blah blah blah");
              tabbedPane.addTab("Three", panel3);
              tabbedPane.setBackgroundAt(2, Color.red);

              Component panel4 = makeTextPanel("Blah blah blah blah");
              tabbedPane.addTab("Four", panel4);
              tabbedPane.setBackgroundAt(3, Color.cyan);

              //Add the tabbed pane to this panel.
              setLayout(new GridLayout(1, 1));
              add(tabbedPane);
          }

          protected Component makeTextPanel(String text) {
              JPanel panel = new JPanel(false);
              JLabel filler = new JLabel(text);
              filler.setHorizontalAlignment(JLabel.CENTER);
              panel.setLayout(new GridLayout(1, 1));
              panel.add(filler);
              return panel;
          }

          public static void main(String[] args) {
              try {
                  UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
              }
              catch(Exception e) {
                  e.printStackTrace();
              }

              JFrame frame = new JFrame("Tabbed Pane Demo for Color");
              frame.addWindowListener(new WindowAdapter() {
                  public void windowClosing(WindowEvent e) {System.exit(0);}
              });

              frame.getContentPane().add(new TEMP_TABBED_PANE(),
                                         BorderLayout.CENTER);
              frame.setSize(400, 125);
              frame.setVisible(true);
          }
      }

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

      CUSTOMER SUBMITTED WORKAROUND :
      Replacing "UIManager.getSystemLookAndFeelClassName()" in the following code with "UIManager.getCrossPlatformLookAndFeelClassName()" sets colors properly. But, we like to use for our purpose.

      Release Regression From : 1.3.1_11
      The above release value was the last known release where this
      bug was known to work. Since then there has been a regression.

      (Incident Review ID: 208849)
      ======================================================================

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              leifs Leif Samuelsson (Inactive)
              gmanwanisunw Girish Manwani (Inactive)
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