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* General Public License Version 2 only ("GPL") or the Common Development
* and Distribution License("CDDL") (collectively, the "License"). You
* may not use this file except in compliance with the License. You can
* obtain a copy of the License at
* https://glassfish.dev.java.net/public/CDDL+GPL_1_1.html
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* language governing permissions and limitations under the License.
*
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* file and include the License file at packager/legal/LICENSE.txt.
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/*
* @(#)LongField.java 1.4 06/27/07
*/
package com.sun.messaging.jmq.admin.apps.console.util;
import java.awt.Toolkit;
import java.awt.event.KeyEvent;
import javax.swing.JTextField;
import javax.swing.text.AttributeSet;
import javax.swing.text.BadLocationException;
import javax.swing.text.PlainDocument;
public class LongField extends JTextField {
//*****************************************************************
// Constructors
public LongField(long min, long max, String text) {
this(min, max, text, 0);
}
public LongField(long min, long max, int columns) {
this(min, max, null, columns);
}
public LongField(long min, long max,
String text, int columns) {
super(new LongDocument(min, max), text, columns);
}
}
//*************************************************************************
// LongDocument class
class LongDocument extends PlainDocument {
long min;
long max;
//*********************************************************************
// Constructors
public LongDocument(long min, long max) {
this.min = min;
this.max = max;
}
//*********************************************************************
// Validation routines
public void insertString(int offset, String str, AttributeSet a)
throws BadLocationException
{
// Validate each char in str checking if in '0' .. '9'.
// If the min value is < 0, then allow a '-' only in the
// first position.
for (int i=0; i KeyEvent.VK_9) {
// keyCode 45 is the '-' char.
if (!(min < 0 && offset == 0 && keyCode == 45)) {
Toolkit.getDefaultToolkit().beep();
return;
}
}
}
// Validate the entire string in text field making
// sure it's within range.
String sval = getText(0, getLength());
sval = sval.substring(0, offset) + str +
sval.substring(offset, sval.length());
// Max digits for a number to fit in a type long.
// And also make sure two '-'s weren't entered.
if (sval.length() > 18 || sval.startsWith("--")) {
Toolkit.getDefaultToolkit().beep();
return;
} else if (!sval.equals("-")) {
// Evaluate only if it's not a single '-' char.
long ival = Long.valueOf(sval).longValue();
if (ival < min || ival > max) {
Toolkit.getDefaultToolkit().beep();
return;
}
}
// Accept the input.
super.insertString(offset, str, a);
}
}