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  1. JDK
  2. JDK-8139195

Editable JComboBox with custom editor does not respond to up/down arrow keys

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      FULL PRODUCT VERSION :
      java version "1.8.0_51"
      Java(TM) SE Runtime Environment (build 1.8.0_51-b16)
      Java HotSpot(TM) 64-Bit Server VM (build 25.51-b03, mixed mode)

      ADDITIONAL OS VERSION INFORMATION :
      OS X 10.10.5

      A DESCRIPTION OF THE PROBLEM :
      On OS X, an editable JComboBox with custom editor does not respond to up/down arrow keys.
      If the default editor is used, the drop down list is navigable using the up / down arrow keys.
      If another editor is used (e.g. javax.swing.plaf.basic.BasicComboBoxEditor) then keys are ignored.

      STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
      Create an editable combobox with some items and set a custom combobox editor.
      Run the supplied app. One combobox sets an editor the other uses the default - only the default will work.

      EXPECTED VERSUS ACTUAL BEHAVIOR :
      EXPECTED -
      Both comboboxes should allow selection of items with up down arrow.
      ACTUAL -
      The default editor will function as expected (allows selection of items with up down arrow).
      The custom editor will not respond to arrows.

      REPRODUCIBILITY :
      This bug can be reproduced always.

      ---------- BEGIN SOURCE ----------
      import javax.swing.ComboBoxEditor;
      import javax.swing.JComboBox;
      import javax.swing.JFrame;
      import javax.swing.JLabel;
      import javax.swing.JPanel;
       
      public class ComboBoxTest
      {
          private static void createAndShowGUI()
          {
              JPanel panel = new JPanel();
              
              // create an editable JComboBox with a ComboBoxEditor
              JComboBox cb1 = new JComboBox();
              cb1.setEditable(true);
              ComboBoxEditor cbe1 = new javax.swing.plaf.basic.BasicComboBoxEditor();
              System.out.println("No arrow selection combo: ComboBoxEditor == " + cbe1);
              cb1.setEditor(cbe1);
              
              cb1.addItem("test1");
              cb1.addItem("test2");
              cb1.addItem("test3");
       
              panel.add(new JLabel("No arrow selection combo:"));
              panel.add(cb1);
                      
              // create an editable JComboBox using default ComboBoxEditor
              JComboBox cb2 = new JComboBox();
              cb2.setEditable(true);
              ComboBoxEditor cbe2 = cb2.getEditor();
              System.out.println("Arrow selection works: ComboBoxEditor == " + cbe2);
              //cb2.setEditor(cbe2);
              
              cb2.addItem("test1");
              cb2.addItem("test2");
              cb2.addItem("test3");
              
              panel.add(new JLabel("Arrow selection works:"));
              panel.add(cb2);
       
              JFrame frame = new JFrame();
              frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
              frame.getContentPane().add(panel);
              frame.pack();
              frame.setVisible(true);
          }
          
          public static void main(String[] args)
          {
              javax.swing.SwingUtilities.invokeLater(new Runnable()
              {
                  @Override
                  public void run()
                  {
                      createAndShowGUI();
                  }
              });
          }
      }

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

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            Assignee:
            pnarayanaswa Praveen Narayanaswamy
            Reporter:
            webbuggrp Webbug Group
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              Created:
              Updated:
              Resolved: