| /* |
| * Copyright (c) 2006, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package sun.tools.jconsole; |
| |
| import java.awt.Font; |
| import java.awt.event.WindowAdapter; |
| import java.awt.event.WindowEvent; |
| import java.io.*; |
| |
| import javax.swing.*; |
| |
| /** |
| * A simple console window to display messages sent to System.out and |
| * System.err. |
| * |
| * A stop-gap solution until an error dialog is implemented. |
| */ |
| public class OutputViewer { |
| private static JFrame frame; |
| private static JTextArea ta; |
| |
| static { |
| System.setOut(PipeListener.create("System.out")); |
| System.setErr(PipeListener.create("System.err")); |
| } |
| |
| // Dummy to cause class to be loaded |
| public static void init() { } |
| |
| private static void append(String s) { |
| if (frame == null) { |
| // FIXME: The frame title should be a localized string. |
| frame = new JFrame("JConsole: Output"); |
| ta = new JTextArea(); |
| ta.setEditable(false); |
| frame.getContentPane().add(new JScrollPane(ta)); |
| ta.setFont(new Font("Monospaced", Font.BOLD, 14)); |
| frame.setSize(500, 600); |
| frame.setLocation(1024-500, 768-600); |
| // Exit JConsole if no window remains. |
| // e.g. jconsole -version only creates the OutputViewer |
| // but no other window. |
| frame.addWindowListener(new WindowAdapter() { |
| public void windowClosing(WindowEvent e) { |
| if (JFrame.getFrames().length == 1) { |
| System.exit(0); |
| } |
| } |
| }); |
| } |
| ta.append(s); |
| ta.setCaretPosition(ta.getText().length()); |
| frame.setVisible(true); |
| } |
| |
| private static void appendln(String s) { |
| append(s+"\n"); |
| } |
| |
| private static class PipeListener extends Thread { |
| public PrintStream ps; |
| private String name; |
| private PipedInputStream inPipe; |
| private BufferedReader br; |
| |
| public static PrintStream create(String name) { |
| return new PipeListener(name).ps; |
| } |
| |
| private PipeListener(String name) { |
| this.name = name; |
| |
| try { |
| inPipe = new PipedInputStream(); |
| ps = new PrintStream(new PipedOutputStream(inPipe)); |
| br = new BufferedReader(new InputStreamReader(inPipe)); |
| } catch (IOException e) { |
| appendln("PipeListener<init>("+name+"): " + e); |
| } |
| start(); |
| } |
| |
| public void run() { |
| try { |
| String str; |
| while ((str = br.readLine()) != null) { |
| appendln(str); |
| |
| // Hack: Turn off thread check in PipedInputStream. |
| // Any thread should be allowed to write except this one |
| // but we just use this one to keep the pipe alive. |
| try { |
| java.lang.reflect.Field f = |
| PipedInputStream.class.getDeclaredField("writeSide"); |
| f.setAccessible(true); |
| f.set(inPipe, this); |
| } catch (Exception e) { |
| appendln("PipeListener("+name+").run: "+e); |
| } |
| } |
| appendln("-- "+name+" closed --"); |
| br.close(); |
| } catch (IOException e) { |
| appendln("PipeListener("+name+").run: "+e); |
| } |
| } |
| } |
| } |