/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
*
* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is Rhino JavaScript Debugger code, released
* November 21, 2000.
*
* The Initial Developer of the Original Code is
* See Beyond Corporation.
* Portions created by the Initial Developer are Copyright (C) 2000
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Christopher Oliver
*
* Alternatively, the contents of this file may be used under the terms of
* the GNU General Public License Version 2 or later (the "GPL"), in which
* case the provisions of the GPL are applicable instead of those above. If
* you wish to allow use of your version of this file only under the terms of
* the GPL and not to allow others to use your version of this file under the
* MPL, indicate your decision by deleting the provisions above and replacing
* them with the notice and other provisions required by the GPL. If you do
* not delete the provisions above, a recipient may use your version of this
* file under either the MPL or the GPL.
*
* ***** END LICENSE BLOCK ***** */
package org.moyrax.javascript.shell;
import java.awt.Font;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
import java.io.IOException;
import java.io.InputStream;
import java.io.PipedInputStream;
import java.io.PipedOutputStream;
import java.io.PrintStream;
import java.io.PrintWriter;
import javax.swing.JTextArea;
import javax.swing.SwingUtilities;
import javax.swing.event.DocumentEvent;
import javax.swing.event.DocumentListener;
import javax.swing.text.Document;
import javax.swing.text.Segment;
class ConsoleWrite implements Runnable {
private ConsoleTextArea textArea;
private String str;
public ConsoleWrite(ConsoleTextArea textArea, String str) {
this.textArea = textArea;
this.str = str;
}
public void run() {
textArea.write(str);
}
};
class ConsoleWriter extends java.io.OutputStream {
private ConsoleTextArea textArea;
private StringBuffer buffer;
public ConsoleWriter(ConsoleTextArea textArea) {
this.textArea = textArea;
buffer = new StringBuffer();
}
public synchronized void write(int ch) {
buffer.append((char)ch);
if(ch == '\n') {
flushBuffer();
}
}
public synchronized void write (char[] data, int off, int len) {
for(int i = off; i < len; i++) {
buffer.append(data[i]);
if(data[i] == '\n') {
flushBuffer();
}
}
}
public synchronized void flush() {
if (buffer.length() > 0) {
flushBuffer();
}
}
public void close () {
flush();
}
private void flushBuffer() {
String str = buffer.toString();
buffer.setLength(0);
SwingUtilities.invokeLater(new ConsoleWrite(textArea, str));
}
};
public class ConsoleTextArea
extends JTextArea implements KeyListener, DocumentListener
{
static final long serialVersionUID = 8557083244830872961L;
private ConsoleWriter console1;
private ConsoleWriter console2;
private PrintStream out;
private PrintStream err;
private PrintWriter inPipe;
private PipedInputStream in;
@SuppressWarnings("unchecked")
private java.util.Vector history;
private int historyIndex = -1;
private int outputMark = 0;
public void select(int start, int end) {
requestFocus();
super.select(start, end);
}
@SuppressWarnings("unchecked")
public ConsoleTextArea(String[] argv) {
super();
history = new java.util.Vector();
console1 = new ConsoleWriter(this);
console2 = new ConsoleWriter(this);
out = new PrintStream(console1);
err = new PrintStream(console2);
PipedOutputStream outPipe = new PipedOutputStream();
inPipe = new PrintWriter(outPipe);
in = new PipedInputStream();
try {
outPipe.connect(in);
} catch(IOException exc) {
exc.printStackTrace();
}
getDocument().addDocumentListener(this);
addKeyListener(this);
setLineWrap(true);
setFont(new Font("Monospaced", 0, 12));
}
@SuppressWarnings("unchecked")
synchronized void returnPressed() {
Document doc = getDocument();
int len = doc.getLength();
Segment segment = new Segment();
try {
doc.getText(outputMark, len - outputMark, segment);
} catch(javax.swing.text.BadLocationException ignored) {
ignored.printStackTrace();
}
if(segment.count > 0) {
history.addElement(segment.toString());
}
historyIndex = history.size();
inPipe.write(segment.array, segment.offset, segment.count);
append("\n");
outputMark = doc.getLength();
inPipe.write("\n");
inPipe.flush();
console1.flush();
}
public void eval(String str) {
inPipe.write(str);
inPipe.write("\n");
inPipe.flush();
console1.flush();
}
public void keyPressed(KeyEvent e) {
int code = e.getKeyCode();
if(code == KeyEvent.VK_BACK_SPACE || code == KeyEvent.VK_LEFT) {
if(outputMark == getCaretPosition()) {
e.consume();
}
} else if(code == KeyEvent.VK_HOME) {
int caretPos = getCaretPosition();
if(caretPos == outputMark) {
e.consume();
} else if(caretPos > outputMark) {
if(!e.isControlDown()) {
if(e.isShiftDown()) {
moveCaretPosition(outputMark);
} else {
setCaretPosition(outputMark);
}
e.consume();
}
}
} else if(code == KeyEvent.VK_ENTER) {
returnPressed();
e.consume();
} else if(code == KeyEvent.VK_UP) {
historyIndex--;
if(historyIndex >= 0) {
if(historyIndex >= history.size()) {
historyIndex = history.size() -1;
}
if(historyIndex >= 0) {
String str = (String)history.elementAt(historyIndex);
int len = getDocument().getLength();
replaceRange(str, outputMark, len);
int caretPos = outputMark + str.length();
select(caretPos, caretPos);
} else {
historyIndex++;
}
} else {
historyIndex++;
}
e.consume();
} else if(code == KeyEvent.VK_DOWN) {
int caretPos = outputMark;
if(history.size() > 0) {
historyIndex++;
if(historyIndex < 0) {historyIndex = 0;}
int len = getDocument().getLength();
if(historyIndex < history.size()) {
String str = (String)history.elementAt(historyIndex);
replaceRange(str, outputMark, len);
caretPos = outputMark + str.length();
} else {
historyIndex = history.size();
replaceRange("", outputMark, len);
}
}
select(caretPos, caretPos);
e.consume();
}
}
public void keyTyped(KeyEvent e) {
int keyChar = e.getKeyChar();
if(keyChar == 0x8 /* KeyEvent.VK_BACK_SPACE */) {
if(outputMark == getCaretPosition()) {
e.consume();
}
} else if(getCaretPosition() < outputMark) {
setCaretPosition(outputMark);
}
}
public synchronized void keyReleased(KeyEvent e) {
}
public synchronized void write(String str) {
insert(str, outputMark);
int len = str.length();
outputMark += len;
select(outputMark, outputMark);
}
public synchronized void insertUpdate(DocumentEvent e) {
int len = e.getLength();
int off = e.getOffset();
if(outputMark > off) {
outputMark += len;
}
}
public synchronized void removeUpdate(DocumentEvent e) {
int len = e.getLength();
int off = e.getOffset();
if(outputMark > off) {
if(outputMark >= off + len) {
outputMark -= len;
} else {
outputMark = off;
}
}
}
public synchronized void postUpdateUI() {
// this attempts to cleanup the damage done by updateComponentTreeUI
requestFocus();
setCaret(getCaret());
select(outputMark, outputMark);
}
public synchronized void changedUpdate(DocumentEvent e) {
}
public InputStream getIn() {
return in;
}
public PrintStream getOut() {
return out;
}
public PrintStream getErr() {
return err;
}
};