--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/src/jdk.jconsole/share/classes/sun/tools/jconsole/OutputViewer.java Sun Aug 17 15:54:13 2014 +0100
@@ -0,0 +1,131 @@
+/*
+ * 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);
+ }
+ }
+ }
+}