/*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
/*
* ReaderToTextArea.java
* Copyright (C) 2009 University of Waikato, Hamilton, New Zealand
*/
package weka.gui;
import java.awt.Color;
import java.io.LineNumberReader;
import java.io.Reader;
import javax.swing.JTextPane;
import javax.swing.text.Style;
import javax.swing.text.StyleConstants;
import javax.swing.text.StyleContext;
import javax.swing.text.StyledDocument;
/**
* A class that sends all lines from a reader to a JTextPane component.
*
* @author Len Trigg (trigg@cs.waikato.ac.nz)
* @author FracPete (fracpete at waikato dot ac dot nz)
* @version $Revision: 5142 $
*/
public class ReaderToTextPane
extends Thread {
/** The reader being monitored. */
protected LineNumberReader m_Input;
/** The output text component. */
protected JTextPane m_Output;
/** the color to use. */
protected Color m_Color;
/**
* Sets up the thread. Using black as color for displaying the text.
*
* @param input the Reader to monitor
* @param output the TextArea to send output to
*/
public ReaderToTextPane(Reader input, JTextPane output) {
this(input, output, Color.BLACK);
}
/**
* Sets up the thread.
*
* @param input the Reader to monitor
* @param output the TextArea to send output to
* @param color the color to use
*/
public ReaderToTextPane(Reader input, JTextPane output, Color color) {
StyledDocument doc;
Style style;
setDaemon(true);
m_Color = color;
m_Input = new LineNumberReader(input);
m_Output = output;
doc = m_Output.getStyledDocument();
style = StyleContext.getDefaultStyleContext()
.getStyle(StyleContext.DEFAULT_STYLE);
style = doc.addStyle(getStyleName(), style);
StyleConstants.setFontFamily(style, "monospaced");
StyleConstants.setForeground(style, m_Color);
}
/**
* Returns the color in use.
*
* @return the color
*/
public Color getColor() {
return m_Color;
}
/**
* Returns the style name.
*
* @return the style name
*/
protected String getStyleName() {
return "" + m_Color.hashCode();
}
/**
* Sit here listening for lines of input and appending them straight
* to the text component.
*/
public void run() {
while (true) {
try {
StyledDocument doc = m_Output.getStyledDocument();
doc.insertString(
doc.getLength(),
m_Input.readLine() + '\n',
doc.getStyle(getStyleName()));
m_Output.setCaretPosition(doc.getLength());
}
catch (Exception ex) {
try {
sleep(100);
}
catch (Exception e) {
// ignored
}
}
}
}
}