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  1. JDK
  2. JDK-8040659

Modal JDialog Appears Behind Non-Owner JFrame

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      Description

      FULL PRODUCT VERSION :
      java version " 1.7.0_21 "
      Java(TM) SE Runtime Environment (build 1.7.0_21-b12)
      Java HotSpot(TM) 64-Bit Server VM (build 23.21-b01, mixed mode)

      ADDITIONAL OS VERSION INFORMATION :
      Mac OS X 10.8.3 Build version: 12D78
      Darwin Kernel Version 12.3.0: Sun Jan 6 22:37:10 PST 2013; root:xnu-2050.22.13~1/RELEASE_X86_64 x86_64

      A DESCRIPTION OF THE PROBLEM :
      In an application with multiple JFrames visible if a modal dialog is created with an owner that is under another JFrame, when the modal dialog is set as visible it is also displayed under the non-owner JFrame.

      The provided example works as expected in the following environments:
          - Mac OS X 10.8.4 with Java 1.6.0_45
          - Windows 7 with Java 1.6.0_45
          - Windows 7 with Java 1.7.0_21

      The behaviour is different in:
          - Mac OS X 10.8.4 with Java 1.7.0_21


      REGRESSION. Last worked in version 6u45

      STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
      1. Create two JFrames, " main " and " secondary "
      2. Set the " main " JFrame visible, followed by the " secondary "
      3. Create a modal JDialog with the " main " JFrame as the owner
      4. Make the new JDialog visible

      EXPECTED VERSUS ACTUAL BEHAVIOR :
      EXPECTED -
      The owner JFrame is displayed " on top " of the secondary JFrame and the modal dialog on top of it's owner
      ACTUAL -
      The modal dialog is displayed behind the secondary JFrame

      REPRODUCIBILITY :
      This bug can be reproduced always.

      ---------- BEGIN SOURCE ----------
      public class FrameTester {

      public static void main(String[] args) {
      SwingUtilities.invokeLater(new Runnable() {
      @Override
      public void run() {
      final JFrame frame1 = new JFrame( " Main Frame " );
      frame1.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
      frame1.setSize(300, 300);
      frame1.setVisible(true);

      JFrame frame2 = new JFrame( " Second Frame " );
      frame2.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
      frame2.setSize(300, 300);
      frame2.setVisible(true);

      Timer timer = new Timer(5000, new ActionListener() {
      @Override
      public void actionPerformed(ActionEvent arg0) {
      JDialog dialog = new JDialog(frame1, " Dialog " , true);
      dialog.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
      dialog.setSize(100, 100);
      dialog.setVisible(true);
      }
      });
      timer.setRepeats(false);
      timer.start();
      }
      });
      }
      }

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

      CUSTOMER SUBMITTED WORKAROUND :
      When the dialog is set to visible, call the toFront method on the parent JFrame.

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            • Assignee:
              dmarkov Dmitry Markov
              Reporter:
              webbuggrp Webbug Group
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              • Created:
                Updated:
                Resolved: