Name: jk109818 Date: 04/28/2003


FULL PRODUCT VERSION :
java version "1.4.1_01"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.1_01-b01)
Java HotSpot(TM) Client VM (build 1.4.1_01-b01, mixed mode)

FULL OS VERSION :
Windows NT Version 4.0

A DESCRIPTION OF THE PROBLEM :
My Application has a JSpinner. I got the textField from the editor of JSpinner

ListEditor editor = ((JSpinner.ListEditor)spinner.getEditor())
JFormattedTextField field = editor.getTextField();

i want to restrict the user from entering more than 3 characters into JSpinner's textfield so created a document which limits to a maximum of 3 characters.
i can also do this using MaskFormatter but i do not want to use it as it places an empty space when deleting a character which is not normal JTextField's behaviour.

i set the document to the JSpinner's JformattedTextField

field.setDocument(new LimitedDocument(3));

but it doesnt work.it allows me to enter as many characters as possible in the field

if i create an instance of JFormattedTextField and set the documnet to it it works as expected so it is a problem in setting document to JFormattedTextField got from JSpinner

JFormattedTextField jfText = new JFormattedTextField();
jfText.setDocument(new LimitedDocument(3); works fine



STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
1.create a JSpinner
2.Get the editor of JSpinner
3.Get the textField from the editor(JFormattedTextField)
4.Create a document which allows maximum of 3 characters only
5.set the document to the JFormattedTextField.
6.Run the application
7.Try to enter characters in the JSpinners TextField
8.Notice that it allows as many characters as possible not just 3

EXPECTED VERSUS ACTUAL BEHAVIOR :
Expected to hear a beep when user tries to enter more than 3 characters
allowing any number of characters to be entered

REPRODUCIBILITY :
This bug can be reproduced always.

---------- BEGIN SOURCE ----------
import java.awt.*;
import java.awt.event.*;
import java.beans.PropertyChangeEvent;
import java.beans.PropertyChangeListener;
import java.io.Serializable;
import javax.swing.*;
import javax.swing.JSpinner.ListEditor;
import javax.swing.text.AttributeSet;
import javax.swing.text.BadLocationException;
import javax.swing.text.PlainDocument;
import java.util.Vector;

public class Frame1 extends JFrame
{
   JPanel contentPane;
   private SpinnerListModel _blkNamemodel;
   BorderLayout borderLayout1 = new BorderLayout();
   public Frame1()
   {
      jbInit();
      setVisible(true);
   }
   public void InitBlkNameSpinList()
   {
      int j = 000;
      Vector _vBlockNameList = new Vector(256);

      String strBlockNumber = new String();
      for (int i = j ; i < 256 ; i++)
      {
        strBlockNumber = strBlockNumber.valueOf(i);
        String tempStr = "000" + strBlockNumber;
       final int START_OFFSET = strBlockNumber.length() ;
        strBlockNumber = tempStr.substring (START_OFFSET,tempStr.length());
        _vBlockNameList.addElement(strBlockNumber);
        _blkNamemodel = new SpinnerListModel(_vBlockNameList);
      }
   }
   private void jbInit()
   {
      contentPane = (JPanel) this.getContentPane();
      this.setSize(new Dimension(400, 300));
      this.setTitle("Frame Title");
      contentPane.setLayout(borderLayout1);
      InitBlkNameSpinList();
      JSpinner spinner = new JSpinner(_blkNamemodel);
      PlainDocument doc = new LimitedDocument(3);
      JFormattedTextField field = ((JSpinner.ListEditor)spinner.getEditor()).getTextField();
      field.setDocument(new LimitedDocument(3));
      
      JFormattedTextField filed = new JFormattedTextField();
      
      filed.setDocument(new LimitedDocument(3));
      contentPane.add(spinner,BorderLayout.NORTH);
      contentPane.add(filed,BorderLayout.SOUTH);

   }
   public static void main(String[] args)
   {
       new Frame1();
   }
   class LimitedDocument extends PlainDocument
   {
      private int _maxCharacters;
      public LimitedDocument(int maxChars)
{
_maxCharacters = maxChars;
}
      public void insertString(int offs, String str, AttributeSet a)
      throws BadLocationException
      {
         if ((getLength() + str.length()) > _maxCharacters)
         {
            Toolkit.getDefaultToolkit().beep();
            return;
         }
         char[] source = str.toCharArray();
         char[] result = new char[source.length];
         int j = 0;
         for (int i = 0; i < result.length; i++)
         {
            result[j++] = source[i];
         }
         super.insertString(offs, new String(result, 0, j), a);
      }
   }
}
---------- END SOURCE ----------
(Review ID: 184750)
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