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/*
* Copyright (c) 2008 Paul C. Buetow, vs-sim@dev.buetow.org
*
* 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
* All icons of the icons/ folder are under a Creative Commons
* Attribution-Noncommercial-Share Alike License a CC-by-nc-sa.
*
* The icon's homepage is http://code.google.com/p/ultimate-gnome/
*/
package simulator;
import java.util.*;
import java.util.regex.*;
import javax.swing.*;
import utils.*;
/**
* The class VSLogging, an object of this class is responsible for the loging
* of text messages into the simulator's loging window.
*
* @author Paul C. Buetow
*/
public class VSLogging {
/** The serial version uid */
private static final long serialVersionUID = 1L;
/** The loging area. */
private JTextArea logingArea;
/** The filter text. */
private String filterText;
/** The pause lines. Used for cacheing the loging if the loging is
* deactivated for a while
*/
private ArrayList<StringBuffer> pauseLines;
/** The loging lines. */
private ArrayList<StringBuffer> logingLines;
/** The simulator canvas. */
private VSSimulatorVisualization simulatorVisualization;
/** The loging messages are filtered. */
private boolean isFiltered;
/** The loging is paused. */
private boolean isPaused;
/** The filter pattern. */
private Pattern filterPattern;
/**
* Instantiates a new VSLogging object.
*/
public VSLogging() {
logingArea = new JTextArea(0, 0);
logingArea.setEditable(false);
logingArea.setLineWrap(true);
logingArea.setWrapStyleWord(true);
logingLines = new ArrayList<StringBuffer>();
pauseLines = new ArrayList<StringBuffer>();
filterText = "";
}
/**
* Sets the simulator canvas.
*
* @param sv the simulator canvas
*/
public void setSimulatorCanvas(VSSimulatorVisualization sv) {
this.simulatorVisualization = sv;
}
/**
* Gets the loging area.
*
* @return the loging area
*/
public JTextArea getLoggingArea() {
return logingArea;
}
/**
* Loggs a message using the global time.
*
* @param message the message
*/
public void log(String message) {
if (simulatorVisualization == null)
log(message, 0);
else
log(message, simulatorVisualization.getTime());
}
/**
* Loggs a message using the specified time.
*
* @param message the message
* @param time the time
*/
public synchronized void log(String message, long time) {
StringBuffer buffer = new StringBuffer();
buffer.append(VSTools.getTimeString(time));
buffer.append(": ");
buffer.append(message);
if (isPaused)
pauseLines.add(buffer);
else
logFiltered(buffer);
}
/**
* Sets if the loging is paused.
*
* @param isPaused true, if the loging is paused
*/
public synchronized void isPaused(boolean isPaused) {
this.isPaused = isPaused;
if (!isPaused) {
for (StringBuffer buffer : pauseLines)
logFiltered(buffer);
pauseLines.clear();
}
}
/**
* If the loging is filtered, it's using the pattern matching.
*
* @param buffer the loging buffer to filter
*/
private void logFiltered(StringBuffer buffer) {
logingLines.add(buffer);
if (!isFiltered) {
logingArea.append(buffer.toString()+"\n");
logingArea.setCaretPosition(
logingArea.getDocument().getLength());
} else if (filterPattern != null &&
filterPattern.matcher(buffer).find()) {
logingArea.append(buffer.toString()+"\n");
logingArea.setCaretPosition(
logingArea.getDocument().getLength());
}
}
/**
* Checks if the loging is filtered.
*
* @param isFiltered true, if the loging is filtered
*/
public synchronized void isFiltered(boolean isFiltered) {
this.isFiltered = isFiltered;
if (!isFiltered)
setFilterText("");
else
filter();
}
/**
* Sets the filter text.
*
* @param filterText the new filter text
*/
public synchronized void setFilterText(String filterText) {
this.filterText = filterText;
filter();
}
/**
* Clears the loging.
*/
public synchronized void clear() {
logingLines.clear();
pauseLines.clear();
logingArea.setText("");
}
/**
* Filters the loging.
*/
private void filter() {
try {
filterPattern = Pattern.compile(filterText);
StringBuffer buffer = new StringBuffer();
for (StringBuffer line : logingLines) {
if (isFiltered) {
Matcher matcher = filterPattern.matcher(line);
if (matcher.find()) {
buffer.append(line);
buffer.append("\n");
}
} else {
buffer.append(line);
buffer.append("\n");
}
}
logingArea.setText(buffer.toString());
} catch (Exception e) {
filterPattern = null;
logingArea.setText("");
}
}
}
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