1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License, Version 1.0 only
   6  * (the "License").  You may not use this file except in compliance
   7  * with the License.
   8  *
   9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
  10  * or http://www.opensolaris.org/os/licensing.
  11  * See the License for the specific language governing permissions
  12  * and limitations under the License.
  13  *
  14  * When distributing Covered Code, include this CDDL HEADER in each
  15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  16  * If applicable, add the following below this CDDL HEADER, with the
  17  * fields enclosed by brackets "[]" replaced with your own identifying
  18  * information: Portions Copyright [yyyy] [name of copyright owner]
  19  *
  20  * CDDL HEADER END
  21  */
  22 /*
  23  * ident        "%Z%%M% %I%     %E% SMI"
  24  *
  25  * Copyright (c) 1999-2001 by Sun Microsystems, Inc.
  26  * All rights reserved.
  27  */
  28 package com.sun.dhcpmgr.client;
  29 
  30 import java.awt.*;
  31 import java.awt.event.*;
  32 import javax.swing.*;
  33 import javax.swing.text.*;
  34 import com.sun.dhcpmgr.data.Option;
  35 
  36 /**
  37  * A text field which enforces the syntax rules for an option name.  These
  38  * are all the rules for DhcptabNameField, plus a limit on the length.
  39  */
  40 public class OptionNameField extends DhcptabNameField {
  41 
  42     /**
  43      * Constructs a field initialized to the provided text.  Defaults to
  44      * 10 characters wide.
  45      * @param text the text to display initially
  46      */
  47     public OptionNameField(String text) {
  48         this(text, 10);
  49     }
  50     
  51     /**
  52      * Constructs a field initialized to the provided text with the requested
  53      * size.
  54      * @param text the text to display initially
  55      * @param length the length in characters the field should size itself to
  56      */
  57     public OptionNameField(String text, int length) {
  58         super(text, length);
  59     }
  60     
  61     protected Document createDefaultModel() {
  62         return new OptionNameDocument();
  63     }
  64     
  65     /* 
  66      * This is the recommended way to validate input, as opposed to trapping
  67      * KeyEvents because this will actually catch paste operations as well.
  68      */
  69     class OptionNameDocument extends DhcptabNameDocument {
  70         public void insertString(int offs, String str, AttributeSet a)
  71                 throws BadLocationException {
  72             if (str != null) {
  73                 if ((getLength() + str.length()) > Option.MAX_NAME_SIZE) {
  74                     throw new BadLocationException("", offs);
  75                 }
  76             }
  77             super.insertString(offs, str, a);
  78         }
  79     }
  80 }