Class | Line # | Actions | ||||
---|---|---|---|---|---|---|
JalviewAppender | 33 | 5 | 4 | 1 |
1 | /* | |
2 | * Jalview - A Sequence Alignment Editor and Viewer ($$Version-Rel$$) | |
3 | * Copyright (C) $$Year-Rel$$ The Jalview Authors | |
4 | * | |
5 | * This file is part of Jalview. | |
6 | * | |
7 | * Jalview is free software: you can redistribute it and/or | |
8 | * modify it under the terms of the GNU General Public License | |
9 | * as published by the Free Software Foundation, either version 3 | |
10 | * of the License, or (at your option) any later version. | |
11 | * | |
12 | * Jalview is distributed in the hope that it will be useful, but | |
13 | * WITHOUT ANY WARRANTY; without even the implied warranty | |
14 | * of MERCHANTABILITY or FITNESS FOR A PARTICULAR | |
15 | * PURPOSE. See the GNU General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU General Public License | |
18 | * along with Jalview. If not, see <http://www.gnu.org/licenses/>. | |
19 | * The Jalview Authors are detailed in the 'AUTHORS' file. | |
20 | */ | |
21 | package jalview.gui; | |
22 | ||
23 | import javax.swing.JTextArea; | |
24 | import javax.swing.SwingUtilities; | |
25 | ||
26 | import org.apache.log4j.WriterAppender; | |
27 | import org.apache.log4j.spi.LoggingEvent; | |
28 | ||
29 | /** | |
30 | * From http://textareaappender.zcage.com/ the means to capture the logs, too. | |
31 | * Simple example of creating a Log4j appender that will write to a JTextArea. | |
32 | */ | |
33 | public class JalviewAppender extends WriterAppender | |
34 | { | |
35 | ||
36 | static private JTextArea jTextArea = null; | |
37 | ||
38 | /** Set the target JTextArea for the logging information to appear. */ | |
39 | 11 | static public void setTextArea(JTextArea jTextArea) |
40 | { | |
41 | 11 | JalviewAppender.jTextArea = jTextArea; |
42 | } | |
43 | ||
44 | /** | |
45 | * Format and then append the loggingEvent to the stored JTextArea. | |
46 | */ | |
47 | 2128 | public void append(LoggingEvent loggingEvent) |
48 | { | |
49 | 2128 | final String message = this.layout.format(loggingEvent); |
50 | ||
51 | // Append formatted message to textarea using the Swing Thread. | |
52 | 2128 | SwingUtilities.invokeLater(new Runnable() |
53 | { | |
54 | 2128 | public void run() |
55 | { | |
56 | 2128 | if (jTextArea != null) |
57 | { | |
58 | 2128 | jTextArea.append(message); |
59 | } | |
60 | } | |
61 | }); | |
62 | } | |
63 | } |