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comparison agent/src/share/classes/sun/jvm/hotspot/ui/HistoryComboBox.java @ 0:a61af66fc99e jdk7-b24

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author duke
date Sat, 01 Dec 2007 00:00:00 +0000
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children c18cbe5936b8
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-1:000000000000 0:a61af66fc99e
1 /*
2 * Copyright 2004 Sun Microsystems, Inc. All Rights Reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
20 * CA 95054 USA or visit www.sun.com if you need additional information or
21 * have any questions.
22 *
23 */
24
25 package sun.jvm.hotspot.ui;
26
27
28 import java.awt.event.*;
29 import javax.swing.*;
30 import javax.swing.event.*;
31
32 /** Provides an editable text field with history. */
33
34 public class HistoryComboBox extends JComboBox {
35 static final int HISTORY_LENGTH = 15;
36
37 public HistoryComboBox() {
38 setEditable(true);
39 addActionListener(new ActionListener() {
40 public void actionPerformed(ActionEvent e) {
41 Object text = getSelectedItem();
42 if (text != null) {
43 setText((String)text);
44 }
45 }
46 });
47 }
48
49 public String getText() {
50 Object text = getSelectedItem();
51 if (text == null) {
52 return "";
53 }
54 return (String)text;
55 }
56
57 public void setText(String text) {
58 removeItem(text);
59 insertItemAt(text, 0);
60 setSelectedItem(text);
61 int length = getModel().getSize();
62 while (length > HISTORY_LENGTH) {
63 removeItemAt(--length);
64 }
65 }
66 }