[14982] | 1 | /*
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| 2 | * Copyright 2005 Paul Hinds
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| 3 | *
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| 4 | * Licensed under the Apache License, Version 2.0 (the "License");
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| 5 | * you may not use this file except in compliance with the License.
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| 6 | * You may obtain a copy of the License at
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| 7 | *
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| 8 | * http://www.apache.org/licenses/LICENSE-2.0
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| 9 | *
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| 10 | * Unless required by applicable law or agreed to in writing, software
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| 11 | * distributed under the License is distributed on an "AS IS" BASIS,
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| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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| 13 | * See the License for the specific language governing permissions and
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| 14 | * limitations under the License.
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| 15 | */
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| 16 | package org.tp23.gui.widget;
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| 17 |
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| 18 | import java.io.ByteArrayOutputStream;
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| 19 | import java.io.PrintStream;
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| 20 |
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| 21 | import javax.swing.JTextArea;
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| 22 |
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| 23 | /**
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| 24 | * <p>This subclass of PrintStream is designed to be compatible with System.out and System.err but it provides
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| 25 | * its own functionality and does not borrow from PrintStream. All methods are overridden. The calls to each method
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| 26 | * behave as expected with the exception of flush() which appears to insert a new line for each call. flush() sends
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| 27 | * the current line to the JTextArea with a call to JTextArea.append(String) which adds a
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| 28 | * line in the buffer.</p>
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| 29 | * @author Paul Hinds
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| 30 | * @version 1.0
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| 31 | */
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| 32 | public class JTextAreaPrintStream extends PrintStream{
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| 33 |
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| 34 | private JTextArea textArea;
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| 35 | private StringBuffer line;
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| 36 |
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| 37 | public JTextAreaPrintStream(JTextArea textArea) {
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| 38 | super(new ByteArrayOutputStream(0));// wasted all methods are overridden
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| 39 | this.textArea = textArea;
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| 40 | line = new StringBuffer();
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| 41 | }
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| 42 |
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| 43 | /**
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| 44 | * The stream can not be closed
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| 45 | */
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| 46 | public void close(){
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| 47 | }
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| 48 |
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| 49 | public synchronized void flush(){
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| 50 | if(line.length()>0){
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| 51 | textArea.append(line.toString());
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| 52 | line = new StringBuffer();
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| 53 | }
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| 54 | }
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| 55 |
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| 56 | public synchronized void write(byte[] b){
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| 57 | line.append(new String(b));
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| 58 | }
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| 59 |
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| 60 | public synchronized void write(byte[] b, int off, int len){
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| 61 | line.append(new String(b,off,len));
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| 62 | }
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| 63 |
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| 64 |
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| 65 | public synchronized void write(int c){
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| 66 | line.append(c);
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| 67 | }
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| 68 |
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| 69 | public synchronized boolean checkError() {
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| 70 | return false;
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| 71 | }
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| 72 |
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| 73 | public synchronized void print(Object obj) {
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| 74 | line.append(obj);
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| 75 | }
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| 76 |
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| 77 |
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| 78 | public synchronized void print(String s) {
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| 79 | line.append(s);
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| 80 | }
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| 81 |
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| 82 |
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| 83 | public synchronized void print(boolean b) {
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| 84 | line.append(b);
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| 85 | }
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| 86 |
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| 87 |
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| 88 | public synchronized void print(char c) {
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| 89 | line.append(c);
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| 90 | }
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| 91 |
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| 92 |
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| 93 | public synchronized void print(char[] s) {
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| 94 | line.append(s);
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| 95 | }
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| 96 |
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| 97 |
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| 98 | public synchronized void print(double d) {
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| 99 | line.append(d);
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| 100 | }
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| 101 |
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| 102 |
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| 103 | public synchronized void print(float f) {
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| 104 | line.append(f);
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| 105 | }
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| 106 |
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| 107 |
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| 108 | public synchronized void print(int i) {
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| 109 | line.append(i);
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| 110 | }
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| 111 |
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| 112 |
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| 113 | public synchronized void print(long l) {
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| 114 | line.append(l);
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| 115 | }
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| 116 |
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| 117 |
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| 118 | public synchronized void println() {
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| 119 | line.append('\n');
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| 120 | flush();
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| 121 | }
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| 122 |
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| 123 |
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| 124 | public synchronized void println(Object x) {
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| 125 | if(line.length()>0){
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| 126 | textArea.append(line.append(String.valueOf(x)).toString());
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| 127 | textArea.append("\n");
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| 128 | line = new StringBuffer();
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| 129 | }
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| 130 | else {
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| 131 | textArea.append(String.valueOf(x));
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| 132 | textArea.append("\n");
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| 133 | }
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| 134 | }
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| 135 |
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| 136 |
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| 137 | public synchronized void println(String x) {
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| 138 | if(line.length()>0){
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| 139 | textArea.append(line.append(x).toString());
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| 140 | textArea.append("\n");
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| 141 | line = new StringBuffer();
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| 142 | }
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| 143 | else {
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| 144 | textArea.append(x);
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| 145 | textArea.append("\n");
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| 146 | }
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| 147 | }
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| 148 |
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| 149 | public synchronized void println(boolean x) {
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| 150 | if(line.length()>0){
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| 151 | textArea.append(line.append(String.valueOf(x)).toString());
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| 152 | textArea.append("\n");
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| 153 | line = new StringBuffer();
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| 154 | }
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| 155 | else {
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| 156 | textArea.append(String.valueOf(x));
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| 157 | textArea.append("\n");
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| 158 | }
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| 159 | }
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| 160 |
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| 161 |
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| 162 | public synchronized void println(char x) {
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| 163 | if(line.length()>0){
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| 164 | textArea.append(line.append(String.valueOf(x)).toString());
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| 165 | textArea.append("\n");
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| 166 | line = new StringBuffer();
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| 167 | }
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| 168 | else {
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| 169 | textArea.append(String.valueOf(x));
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| 170 | textArea.append("\n");
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| 171 | }
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| 172 | }
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| 173 |
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| 174 |
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| 175 | public synchronized void println(char[] x) {
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| 176 | if(line.length()>0){
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| 177 | textArea.append(line.append(String.valueOf(x)).toString());
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| 178 | textArea.append("\n");
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| 179 | line = new StringBuffer();
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| 180 | }
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| 181 | else {
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| 182 | textArea.append(String.valueOf(x));
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| 183 | textArea.append("\n");
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| 184 | }
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| 185 | }
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| 186 |
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| 187 |
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| 188 | public synchronized void println(double x) {
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| 189 | if(line.length()>0){
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| 190 | textArea.append(line.append(String.valueOf(x)).toString());
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| 191 | textArea.append("\n");
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| 192 | line = new StringBuffer();
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| 193 | }
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| 194 | else {
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| 195 | textArea.append(String.valueOf(x));
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| 196 | textArea.append("\n");
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| 197 | }
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| 198 | }
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| 199 |
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| 200 |
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| 201 | public synchronized void println(float x) {
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| 202 | if(line.length()>0){
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| 203 | textArea.append(line.append(String.valueOf(x)).toString());
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| 204 | textArea.append("\n");
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| 205 | line = new StringBuffer();
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| 206 | }
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| 207 | else {
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| 208 | textArea.append(String.valueOf(x));
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| 209 | textArea.append("\n");
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| 210 | }
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| 211 | }
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| 212 |
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| 213 |
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| 214 | public synchronized void println(int x) {
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| 215 | if(line.length()>0){
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| 216 | textArea.append(line.append(String.valueOf(x)).toString());
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| 217 | textArea.append("\n");
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| 218 | line = new StringBuffer();
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| 219 | }
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| 220 | else {
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| 221 | textArea.append(String.valueOf(x));
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| 222 | textArea.append("\n");
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| 223 | }
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| 224 | }
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| 225 |
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| 226 |
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| 227 | public synchronized void println(long x) {
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| 228 | if(line.length()>0){
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| 229 | textArea.append(line.append(String.valueOf(x)).toString());
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| 230 | textArea.append("\n");
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| 231 | line = new StringBuffer();
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| 232 | }
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| 233 | else {
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| 234 | textArea.append(String.valueOf(x));
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| 235 | textArea.append("\n");
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| 236 | }
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| 237 | }
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| 238 |
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| 239 |
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| 240 | protected void setError() {
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| 241 | }
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| 242 |
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| 243 |
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| 244 | }
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