1 /*
   2  * Copyright (c) 2011, 2013, Oracle and/or its affiliates. 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.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 
  26 package com.sun.javafx.appmanager;
  27 
  28 import java.io.ByteArrayOutputStream;
  29 import java.io.IOException;
  30 import java.io.OutputStream;
  31 import java.io.PrintStream;
  32 import java.util.concurrent.CountDownLatch;
  33 import javafx.application.Application;
  34 import javafx.application.Platform;
  35 import javafx.scene.Node;
  36 import javafx.scene.Scene;
  37 import javafx.scene.control.Label;
  38 import javafx.scene.control.TextArea;
  39 import javafx.scene.layout.BorderPane;
  40 import javafx.scene.text.Font;
  41 import javafx.stage.Stage;
  42 
  43 public final class BootstrapApplication extends Application {
  44     private static final CountDownLatch appStartedLatch =
  45             new CountDownLatch(1);
  46 
  47     @Override
  48     public void start(final Stage primaryStage) {
  49 //        Platform.setImplicitExit(false);
  50         final BorderPane root = new BorderPane();
  51         root.setCenter(new Label("Mobile Center"));
  52         root.setBottom(createOutputArea());
  53 
  54         primaryStage.setTitle("Mobile Center");
  55         primaryStage.setScene(new Scene(root));
  56         primaryStage.show();
  57 
  58         appStartedLatch.countDown();
  59     }
  60 
  61     public static void waitForStart() throws InterruptedException {
  62         appStartedLatch.await();
  63     }
  64 
  65     private static Node createOutputArea() {
  66         final TextArea textArea = new TextArea();
  67         textArea.setPrefColumnCount(80);
  68         textArea.setPrefRowCount(25);
  69         textArea.setEditable(false);
  70         textArea.setFont(Font.font("Monospaced"));
  71         textArea.setWrapText(true);
  72 
  73         final OutputStream textAreaStream = new TextAreaStream(textArea);
  74         System.setOut(new PrintStream(textAreaStream, true));
  75         System.setErr(new PrintStream(textAreaStream, true));
  76 
  77         return textArea;
  78     }
  79 
  80     private static final class TextAreaStream extends OutputStream
  81                                               implements Runnable {
  82         private final TextArea textArea;
  83         private final ByteArrayOutputStream byteBuffer;
  84         private final StringBuilder textToAppend;
  85 
  86         public TextAreaStream(final TextArea textArea) {
  87             this.textArea = textArea;
  88             this.byteBuffer = new ByteArrayOutputStream();
  89             this.textToAppend = new StringBuilder();
  90         }
  91 
  92         @Override
  93         public void write(final int value) {
  94             synchronized (byteBuffer) {
  95                 byteBuffer.write(value);
  96             }
  97         }
  98 
  99         @Override
 100         public void write(final byte buffer[], final int offset,
 101                           final int length) {
 102             synchronized (byteBuffer) {
 103                 byteBuffer.write(buffer, offset, length);
 104             }
 105         }
 106 
 107         @Override
 108         public synchronized void flush() throws IOException {
 109             final byte[] bytes;
 110             synchronized (byteBuffer) {
 111                 byteBuffer.flush();
 112                 if (byteBuffer.size() == 0) {
 113                     return;
 114                 }
 115 
 116                 bytes = byteBuffer.toByteArray();
 117                 byteBuffer.reset();
 118             }
 119 
 120             synchronized (textToAppend) {
 121                 if (textToAppend.length() == 0) {
 122                     // no flush has been schedulet yet
 123                     Platform.runLater(this);
 124                 }
 125 
 126                 textToAppend.append(new String(bytes));
 127             }
 128         }
 129 
 130         @Override
 131         public void run() {
 132             final String newText;
 133             synchronized (textToAppend) {
 134                 newText = textToAppend.toString();
 135                 textToAppend.setLength(0);
 136             }
 137 
 138             textArea.appendText(newText);
 139         }
 140     }
 141 }