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  1. JDK
  2. JDK-6852579

Use of Nimbus causes NullPointerException in BasicEditorUI

    Details

    • Subcomponent:
    • Understanding:
      Cause Known
    • CPU:
      x86
    • OS:
      windows_xp

      Description

      FULL PRODUCT VERSION :
      java version "1.6.0_14"
      Java(TM) SE Runtime Environment (build 1.6.0_14-b08)
      Java HotSpot(TM) Client VM (build 14.0-b16, mixed mode, sharing)

      ADDITIONAL OS VERSION INFORMATION :
      Microsoft Windows XP [Version 5.1.2600]

      A DESCRIPTION OF THE PROBLEM :
      Adding a style sheet rule to a JTextPane causes Nimbus to throw a NullPointerException, the same code works with Metal and Windows Xp look and feels.

      STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
      Run the test code provided

      EXPECTED VERSUS ACTUAL BEHAVIOR :
      EXPECTED -
      A dialog should be shown where the font in the JTextPane has been changed with a style sheet rule.
      ACTUAL -
      NullPointerException

      ERROR MESSAGES/STACK TRACES THAT OCCUR :
      Exception in thread "main" java.lang.NullPointerException
              at javax.swing.plaf.basic.BasicEditorPaneUI.updateCSS(BasicEditorPaneUI.java:301)
              at javax.swing.plaf.basic.BasicEditorPaneUI.updateDisplayProperties(BasicEditorPaneUI.java:223)
              at javax.swing.plaf.basic.BasicEditorPaneUI.propertyChange(BasicEditorPaneUI.java:163)
              at javax.swing.plaf.synth.SynthEditorPaneUI.propertyChange(SynthEditorPaneUI.java:90)
              at javax.swing.plaf.synth.SynthTextPaneUI.propertyChange(SynthTextPaneUI.java:73)
              at javax.swing.plaf.basic.BasicTextUI$UpdateHandler.propertyChange(BasicTextUI.java:1794)
              at java.beans.PropertyChangeSupport.firePropertyChange(PropertyChangeSupport.java:339)
              at java.beans.PropertyChangeSupport.firePropertyChange(PropertyChangeSupport.java:276)
              at java.awt.Component.firePropertyChange(Component.java:8128)
              at java.awt.Component.setFont(Component.java:1793)
              at java.awt.Container.setFont(Container.java:1554)
              at javax.swing.JComponent.setFont(JComponent.java:2723)
              at nimbuscss.Main.show(Main.java:65)
              at nimbuscss.Main.main(Main.java:90)


      REPRODUCIBILITY :
      This bug can be reproduced always.

      ---------- BEGIN SOURCE ----------
      /*
       * Nimbus causes java.lang.NullPointerException
       * at javax.swing.plaf.basic.BasicEditorPaneUI.updateCSS(BasicEditorPaneUI.java:301)
       */

      package nimbuscss;

      import java.awt.Desktop;
      import java.awt.Font;
      import java.awt.Window;
      import java.net.URI;
      import java.util.logging.Level;
      import java.util.logging.Logger;
      import javax.swing.JOptionPane;
      import javax.swing.JTextPane;
      import javax.swing.UIManager;
      import javax.swing.event.HyperlinkEvent;
      import javax.swing.event.HyperlinkListener;
      import javax.swing.text.html.HTMLDocument;

      /**
       *
       * @author scott.palmer
       */
      public class Main {


          public Main() throws Exception {

              // Change to FALSE to see that this code works on Windows LnF (or Metal)
              if (true) {
                  for (UIManager.LookAndFeelInfo lnfi : UIManager.getInstalledLookAndFeels()) {
                      if (lnfi.getName().contains("Nimbus")) {
                          UIManager.setLookAndFeel(lnfi.getClassName());
                          break;
                      }
                  }
              } else {
                  UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
              }

          }

          public void show(Window parent) {
              JTextPane pane = new JTextPane();
              pane.setOpaque(false);
              pane.setContentType("text/html");
              pane.setEditable(false);
              pane.setText("<html>Test <a href=\"http://java.sun.com/\">java.sun.com</a>.</html>");
              //"<html>Test <a href=\"http://www.digital-rapids.com/\">www.digital-rapids.com&lt;/a&gt;.&lt;/html>");
              System.out.println("document is a "+pane.getDocument().getClass().getName());
              if (pane.getDocument() instanceof HTMLDocument) {
                  HTMLDocument htmlDoc = (HTMLDocument) pane.getDocument();
                  htmlDoc.getStyleSheet().addRule("body {font-family: Arial;}");
              }

              pane.setFont(Font.getFont(Font.SANS_SERIF));
              pane.addHyperlinkListener(new HyperlinkListener() {

                  @Override
                  public void hyperlinkUpdate(HyperlinkEvent e) {
                      System.out.println("hyperlinkUpdate "+e.getEventType());
                      if (e.getEventType() == HyperlinkEvent.EventType.ACTIVATED) {
                          try {
                              URI target = e.getURL().toURI();
                              Desktop.getDesktop().browse(target);
                          } catch (Exception ex) {
                              Logger.getLogger(Main.class.getName()).log(Level.SEVERE, null, ex);
                          }
                      }

                  }
              });
              JOptionPane.showMessageDialog(
                          parent,
                          pane,
                          "Fails with Nimbus",
                          JOptionPane.ERROR_MESSAGE);
          }

          public static void main(String [] args) throws Exception {
              new Main().show(null);
              System.exit(0);
          }
      }

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

      CUSTOMER SUBMITTED WORKAROUND :
      Don't use Nimbus

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            • Assignee:
              peterz Peter Zhelezniakov (Inactive)
              Reporter:
              igor Igor Nekrestyanov (Inactive)
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              Dates

              • Created:
                Updated:
                Imported:
                Indexed: