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Java > Open Source Codes > nextapp > echo2 > app > TextField


1 /*
2  * This file is part of the Echo Web Application Framework (hereinafter "Echo").
3  * Copyright (C) 2002-2005 NextApp, Inc.
4  *
5  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
6  *
7  * The contents of this file are subject to the Mozilla Public License Version
8  * 1.1 (the "License"); you may not use this file except in compliance with
9  * the License. You may obtain a copy of the License at
10  * http://www.mozilla.org/MPL/
11  *
12  * Software distributed under the License is distributed on an "AS IS" basis,
13  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
14  * for the specific language governing rights and limitations under the
15  * License.
16  *
17  * Alternatively, the contents of this file may be used under the terms of
18  * either the GNU General Public License Version 2 or later (the "GPL"), or
19  * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
20  * in which case the provisions of the GPL or the LGPL are applicable instead
21  * of those above. If you wish to allow use of your version of this file only
22  * under the terms of either the GPL or the LGPL, and not to allow others to
23  * use your version of this file under the terms of the MPL, indicate your
24  * decision by deleting the provisions above and replace them with the notice
25  * and other provisions required by the GPL or the LGPL. If you do not delete
26  * the provisions above, a recipient may use your version of this file under
27  * the terms of any one of the MPL, the GPL or the LGPL.
28  */
29
30 package nextapp.echo2.app;
31
32 import nextapp.echo2.app.text.Document;
33 import nextapp.echo2.app.text.StringDocument;
34 import nextapp.echo2.app.text.TextComponent;
35
36 /**
37  * A single-line text input field.
38  */
39 public class TextField extends TextComponent {
40
41     /**
42      * Creates a new <code>TextField</code> with an empty
43      * <code>StringDocument</code> as its model, and default width
44      * setting.
45      */
46     public TextField() {
47         super(new StringDocument());
48     }
49     
50     /**
51      * Creates a new <code>TextField</code> with the specified
52      * <code>Document</code> model.
53      *
54      * @param document the document
55      */
56     public TextField(Document document) {
57         super(document);
58     }
59     
60     /**
61      * Creates a new <code>TextField</code> with the specified
62      * <code>Document</code> model, initial text, and column width.
63      *
64      * @param document the document
65      * @param text the initial text (may be null)
66      * @param columns the number of columns to display
67      */
68     public TextField(Document document, String JavaDoc text, int columns) {
69         super(document);
70         if (text != null) {
71             document.setText(text);
72         }
73         setWidth(new Extent(columns, Extent.EX));
74     }
75 }
76
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