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  1. JDK
  2. JDK-6294075

JList double highlights entries when selection pops up a modal dialog

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    • Subcomponent:
    • CPU:
      x86
    • OS:
      windows_2000, windows_vista

      Description

      FULL PRODUCT VERSION :
      java version "1.4.2_05"
      Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.2_05-b04)
      Java HotSpot(TM) Client VM (build 1.4.2_05-b04, mixed mode)

      java version "1.5.0_04"
      Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_04-b05)
      Java HotSpot(TM) Client VM (build 1.5.0_04-b05, mixed mode, sharing)

      ADDITIONAL OS VERSION INFORMATION :
      windows2000, linux (fedoracore 2)
      (works on Mac OS x 10.3.9)

      A DESCRIPTION OF THE PROBLEM :
      I have a JList with the following entries: "one", "two", "THREE", "four".
      SINGLE_SELECTION model. When the user selects "THREE", it pops up
      a modal dialog. If I go down the list, selecting each entry successively,
      when I choose "THREE", the JList highlights my previous selection (e.g. "two")
      and the current selection (i.e. "THREE"), even though I have set it to
      SINGLE_SELECTION.

      I have observed this on windows2000, and linux (fedoracore2), but
      not on Mac OS X 10.3.9.


      STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
      Run the included program, select each JList entry in order. Each item will be highlighted, except when "THREE" is selected. A modal dialog will pop up, leaving both "two" and "THREE" highlighted.

      EXPECTED VERSUS ACTUAL BEHAVIOR :
      EXPECTED -
      "two" should not be highlighted, only "THREE".
      ACTUAL -
      both "two" and "THREE" are highlighted.

      REPRODUCIBILITY :
      This bug can be reproduced always.

      ---------- BEGIN SOURCE ----------
      import java.awt.*;
      import java.awt.event.*;
      import javax.swing.*;
      import javax.swing.event.*;

      public class TestJList extends JFrame implements ListSelectionListener, FocusListener
      {
          private static TestJList sTest;

          private JList list;
          private JScrollPane scroll;
          private String fCurrentItem;
          
          public TestJList()
          {
      JToolBar tool = new JToolBar();
              sTest = this;
              
              setTitle("Test Frame");
              JPanel innerPanel = new JPanel(new BorderLayout());
              
              list = new JList();

              scroll = new JScrollPane();
      scroll.setHorizontalScrollBarPolicy(JScrollPane.HORIZONTAL_SCROLLBAR_NEVER);
      scroll.setVerticalScrollBarPolicy(JScrollPane.VERTICAL_SCROLLBAR_ALWAYS);
      scroll.getVerticalScrollBar().setFocusable(false);
      scroll.setBorder(BorderFactory.createLoweredBevelBorder());

      list.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
              
              tool.add(scroll);
      scroll.getViewport().add(list, null);

      list.addListSelectionListener(this);
      list.addFocusListener(this);
      //list.setEnabled(false);
      String[] data = {"one", "two", "THREE", "four"};
      list.setListData(data);

              innerPanel.add(tool, BorderLayout.NORTH);
              setTitle("Test Combo");
              JTextArea textArea = new JTextArea();
              textArea.setLineWrap(true);
              textArea.setPreferredSize(new Dimension(400,400));
              innerPanel.add(textArea, BorderLayout.CENTER);
              getContentPane().add(innerPanel);
              sTest.setSize(400, 400);
              sTest.setVisible(true);
              
          }
          

          public static void main(String[] args)
          {
              new TestJList();
          }

          public void focusGained(FocusEvent event)
      {
      Object eventSource = event.getSource();
      //System.out.println("focusGained("+eventSource+")");
      }

          public void focusLost(FocusEvent event)
      {
      Object eventSource = event.getSource();
      //System.out.println("focusLost("+eventSource+")");
      }

          public void valueChanged(ListSelectionEvent event)
      {
      Object eventSource = event.getSource();
      //System.out.println("focusLost("+eventSource+")");

      if (eventSource == list)
      {
      int idx = list.getSelectedIndex();
      System.out.println("idx:"+idx);
      if (idx == 2)
      popupdialog();
      }
      }

      public void popupdialog()
      {
      dialog d = new dialog(this);
      d.pack();
      d.show();
      }

      public class dialog extends JDialog implements ActionListener
      {
      private JPanel Panel_Content = new JPanel();
      private JPanel Panel_Buttons = new JPanel();
      private JButton button = new JButton();

      dialog(Frame owner)
      {
      super(owner);
      try {jbInit();} catch (Exception e){e.printStackTrace();}
      }

           private void jbInit() throws Exception
           {
               // init the ui
               this.setModal(true);
               this.setTitle("dialog");

      Panel_Content.setLayout(new GridBagLayout());
      Panel_Content.setBorder(BorderFactory.createEmptyBorder(20,20,20,20));

      button.setText("OK");
      Panel_Buttons.setLayout(new GridBagLayout());
      Panel_Buttons.add(button, new GridBagConstraints(0, 0, 0, 0, 0.0, 0.0, GridBagConstraints.CENTER, GridBagConstraints.NONE, new Insets(0, 10, 0, 0), 0, 0));
      Panel_Content.add(Panel_Buttons, new GridBagConstraints(0, 3, 2, 1, 0.0, 0.0, GridBagConstraints.EAST, GridBagConstraints.NONE, new Insets(20, 0, 0, 0), 0, 0));
      this.getContentPane().add(Panel_Content, BorderLayout.CENTER);

      button.addActionListener(this);
      }

      public void actionPerformed(ActionEvent event)
      {
      Object eventSource = event.getSource();
      if (eventSource == button)
      {
      hide();
      }
              }
      }
      }

      ---------- END SOURCE ----------
      ###@###.### 2005-07-05 09:43:19 GMT

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              Assignee:
              art Artem Ananiev
              Reporter:
              ndcosta Nelson Dcosta (Inactive)
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