InputVerifier failed on JTabbedPane & JMenuBar

Name: yyT116575 Date: 01/09/2001


C:\WINNT>java -version
java version "1.3.0"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.3.0-C)
Java HotSpot(TM) Client VM (build 1.3.0-C, mixed mode)


That's the problem :

Case of JTabbedPane :
---------------------
I have a tabbedPane with 2 tabs where on the first tab there is a JTextField
which the only valid text for it is : 'Sun' .I am using an InputVerifier to
make sure the input is valid , (an error msg is popup for invalid input).

Now , if this text field got the focus and the user enter input which is
diffrent from 'Sun' and then press the other tab , the error msg do popup BUT
the tab is changed WHERE i except that it won't.

Note : all the tabs are JPanel which setVerifyInputWhenFocusTarget(true) was
       called on them as for the JTabbedPane itself.

On JMenuBar :
----------
If the input is diffrent from 'Sun' and the user press the 'File' menu on the
menubar then the same problem exsist : the error msg do popup BUT the menubar
is opened.Worst , if the 'Exit' menu item is chosed the appliction do closed.
Where i execpt that the InputVerifier will prevent the menu bar to open from
the first place.

Note : On the used JMenubar,JMenu,JMenuitem the
       setVerifyInputWhenFocusTarget(true) was called.


Attached the code :


import javax.swing.*;
import java.awt.*;
import java.awt.event.*;

public class InputVerifyBugDemo
{
  JTextField txf1;

  public void start()
  {
    JFrame frame = new JFrame("InputVerify Bug Demo");
    frame.setJMenuBar(createMenuBar());
    frame.getContentPane().add(createTabbedPane());
    frame.show();
    txf1.requestFocus();
  }//method

  private JMenuBar createMenuBar()
  {
    JMenuBar menubar = new JMenuBar();
    JMenu menu = new JMenu("File");
    JMenuItem item = new JMenuItem("Exit");
    item.addActionListener(new ActionListener() {
      public void actionPerformed(ActionEvent evt) {
        System.exit(0);
      }
    });
    menu.add(item);
    menubar.add(menu);
    //SET THE setVerifyInputWhenFocusTarget VALUE
    menubar.setVerifyInputWhenFocusTarget(true);
    menu.setVerifyInputWhenFocusTarget(true);
    item.setVerifyInputWhenFocusTarget(true);
    return menubar;
  }//method

  private JTabbedPane createTabbedPane() {
  //create the tabbedPane
    JTabbedPane tabbedPane = new JTabbedPane();

    txf1 = new JTextField("only 'Sun' is valid");
    txf1.setInputVerifier(new InputVerifier() {
      public boolean shouldYieldFocus(JComponent input) {
        boolean bVerify = verify(input);
        if(!bVerify)
        {
          JOptionPane.showMessageDialog(input.getParent(),"only 'Sun' is valid");
        }
        return bVerify;
      }
      public boolean verify(JComponent input) {
        return((JTextField)input).getText().equals("Sun");
      }
    });

    JTextField txf2 = new JTextField("Everything valid");
    JTextField txf3 = new JTextField("Everything valid");
    tabbedPane.addTab("Sun",createTab(txf1,txf2));
    tabbedPane.addTab("All others",createTab(txf3,null));
    //SET THE setVerifyInputWhenFocusTarget VALUE
    tabbedPane.setVerifyInputWhenFocusTarget(true);
    return tabbedPane;
  }

  private JPanel createTab(JComponent cmp1,JComponent cmp2) {
    JPanel tab = new JPanel();
    cmp1.setPreferredSize(new Dimension(120,20));
    tab.add(cmp1);
    if(cmp2 != null)
    {
      cmp2.setPreferredSize(new Dimension(120,20));
      tab.add(cmp2);
    }
    //SET THE setVerifyInputWhenFocusTarget VALUE
    tab.setVerifyInputWhenFocusTarget(true);
    return tab;
  }//method

  public static void main(String[] args) {
    (new InputVerifyBugDemo()).start();
  }//method

}//class
(Review ID: 114527)
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