/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (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.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.log4j.gui;
import java.awt.Color;
import java.awt.Image;
import java.awt.Toolkit;
import java.io.*;
import java.net.URL;
import java.util.Enumeration;
import java.util.StringTokenizer;
import java.util.Hashtable;
import javax.swing.Icon;
import javax.swing.ImageIcon;
import javax.swing.JTextPane;
import javax.swing.text.AttributeSet;
import javax.swing.text.BadLocationException;
import javax.swing.text.MutableAttributeSet;
import javax.swing.text.SimpleAttributeSet;
import javax.swing.text.StyleConstants;
import javax.swing.text.StyledDocument;
import javax.swing.text.TabSet;
import javax.swing.text.TabStop;
import org.apache.log4j.*;
import org.apache.log4j.spi.LoggingEvent;
import org.apache.log4j.helpers.Loader;
import org.apache.log4j.helpers.QuietWriter;
import org.apache.log4j.helpers.TracerPrintWriter;
import org.apache.log4j.helpers.OptionConverter;
/**
* <b>Experimental</b> TextPaneAppender. <br>
*
*
* Created: Sat Feb 26 18:50:27 2000 <br>
*
* @author Sven Reimers
*/
public class TextPaneAppender extends AppenderSkeleton {
JTextPane textpane;
StyledDocument doc;
TracerPrintWriter tp;
StringWriter sw;
QuietWriter qw;
Hashtable attributes;
Hashtable icons;
private String label;
private boolean fancy;
final String LABEL_OPTION = "Label";
final String COLOR_OPTION_FATAL = "Color.Emerg";
final String COLOR_OPTION_ERROR = "Color.Error";
final String COLOR_OPTION_WARN = "Color.Warn";
final String COLOR_OPTION_INFO = "Color.Info";
final String COLOR_OPTION_DEBUG = "Color.Debug";
final String COLOR_OPTION_BACKGROUND = "Color.Background";
final String FANCY_OPTION = "Fancy";
final String FONT_NAME_OPTION = "Font.Name";
final String FONT_SIZE_OPTION = "Font.Size";
public static Image loadIcon ( String path ) {
Image img = null;
try {
URL url = ClassLoader.getSystemResource(path);
img = (Image) (Toolkit.getDefaultToolkit()).getImage(url);
} catch (Exception e) {
System.out.println("Exception occured: " + e.getMessage() +
" - " + e );
}
return (img);
}
public TextPaneAppender(Layout layout, String name) {
this();
this.layout = layout;
this.name = name;
setTextPane(new JTextPane());
createAttributes();
createIcons();
}
public TextPaneAppender() {
super();
setTextPane(new JTextPane());
createAttributes();
createIcons();
this.label="";
this.sw = new StringWriter();
this.qw = new QuietWriter(sw, errorHandler);
this.tp = new TracerPrintWriter(qw);
this.fancy =true;
}
public
void close() {
}
private void createAttributes() {
Priority prio[] = Priority.getAllPossiblePriorities();
attributes = new Hashtable();
for (int i=0; i<prio.length;i++) {
MutableAttributeSet att = new SimpleAttributeSet();
attributes.put(prio[i], att);
StyleConstants.setFontSize(att,14);
}
StyleConstants.setForeground((MutableAttributeSet)attributes.get(Priority.ERROR),Color.red);
StyleConstants.setForeground((MutableAttributeSet)attributes.get(Priority.WARN),Color.orange);
StyleConstants.setForeground((MutableAttributeSet)attributes.get(Priority.INFO),Color.gray);
StyleConstants.setForeground((MutableAttributeSet)attributes.get(Priority.DEBUG),Color.black);
}
private void createIcons() {
Priority prio[] = Priority.getAllPossiblePriorities();
icons = new Hashtable();
for (int i=0; i<prio.length;i++) {
if (prio[i].equals(Priority.FATAL))
icons.put(prio[i],new ImageIcon(loadIcon("icons/RedFlag.gif")));
if (prio[i].equals(Priority.ERROR))
icons.put(prio[i],new ImageIcon(loadIcon("icons/RedFlag.gif")));
if (prio[i].equals(Priority.WARN))
icons.put(prio[i],new ImageIcon(loadIcon("icons/BlueFlag.gif")));
if (prio[i].equals(Priority.INFO))
icons.put(prio[i],new ImageIcon(loadIcon("icons/GreenFlag.gif")));
if (prio[i].equals(Priority.DEBUG))
icons.put(prio[i],new ImageIcon(loadIcon("icons/GreenFlag.gif")));
}
}
public void append(LoggingEvent event) {
String text = this.layout.format(event);
String trace="";
// Print Stacktrace
// Quick Hack maybe there is a better/faster way?
if (event.throwable!=null) {
event.throwable.printStackTrace(tp);
for (int i=0; i< sw.getBuffer().length(); i++) {
if (sw.getBuffer().charAt(i)=='\t')
sw.getBuffer().replace(i,i+1," ");
}
trace = sw.toString();
sw.getBuffer().delete(0,sw.getBuffer().length());
}
try {
if (fancy) {
textpane.setEditable(true);
textpane.insertIcon((ImageIcon)icons.get(event.priority));
textpane.setEditable(false);
}
doc.insertString(doc.getLength(),text+trace,
(MutableAttributeSet)attributes.get(event.priority));
}
catch (BadLocationException badex) {
System.err.println(badex);
}
textpane.setCaretPosition(doc.getLength());
}
public
JTextPane getTextPane() {
return textpane;
}
private
static
Color parseColor (String v) {
StringTokenizer st = new StringTokenizer(v,",");
int val[] = {255,255,255,255};
int i=0;
while (st.hasMoreTokens()) {
val[i]=Integer.parseInt(st.nextToken());
i++;
}
return new Color(val[0],val[1],val[2],val[3]);
}
private
static
String colorToString(Color c) {
// alpha component emitted only if not default (255)
String res = ""+c.getRed()+","+c.getGreen()+","+c.getBlue();
return c.getAlpha() >= 255 ? res : res + ","+c.getAlpha();
}
public
void setLayout(Layout layout) {
this.layout=layout;
}
public
void setName(String name) {
this.name = name;
}
public
void setTextPane(JTextPane textpane) {
this.textpane=textpane;
textpane.setEditable(false);
textpane.setBackground(Color.lightGray);
this.doc=textpane.getStyledDocument();
}
private
void setColor(Priority p, String v) {
StyleConstants.setForeground(
(MutableAttributeSet)attributes.get(p),parseColor(v));
}
private
String getColor(Priority p) {
Color c = StyleConstants.getForeground(
(MutableAttributeSet)attributes.get(p));
return c == null ? null : colorToString(c);
}
/////////////////////////////////////////////////////////////////////
// option setters and getters
public
void setLabel(String label) {
this.label = label;
}
public
String getLabel() {
return label;
}
public
void setColorEmerg(String color) {
setColor(Priority.FATAL, color);
}
public
String getColorEmerg() {
return getColor(Priority.FATAL);
}
public
void setColorError(String color) {
setColor(Priority.ERROR, color);
}
public
String getColorError() {
return getColor(Priority.ERROR);
}
public
void setColorWarn(String color) {
setColor(Priority.WARN, color);
}
public
String getColorWarn() {
return getColor(Priority.WARN);
}
public
void setColorInfo(String color) {
setColor(Priority.INFO, color);
}
public
String getColorInfo() {
return getColor(Priority.INFO);
}
public
void setColorDebug(String color) {
setColor(Priority.DEBUG, color);
}
public
String getColorDebug() {
return getColor(Priority.DEBUG);
}
public
void setColorBackground(String color) {
textpane.setBackground(parseColor(color));
}
public
String getColorBackground() {
return colorToString(textpane.getBackground());
}
public
void setFancy(boolean fancy) {
this.fancy = fancy;
}
public
boolean getFancy() {
return fancy;
}
public
void setFontSize(int size) {
Enumeration e = attributes.elements();
while (e.hasMoreElements()) {
StyleConstants.setFontSize((MutableAttributeSet)e.nextElement(),size);
}
return;
}
public
int getFontSize() {
AttributeSet attrSet = (AttributeSet) attributes.get(Priority.INFO);
return StyleConstants.getFontSize(attrSet);
}
public
void setFontName(String name) {
Enumeration e = attributes.elements();
while (e.hasMoreElements()) {
StyleConstants.setFontFamily((MutableAttributeSet)e.nextElement(),name);
}
return;
}
public
String getFontName() {
AttributeSet attrSet = (AttributeSet) attributes.get(Priority.INFO);
return StyleConstants.getFontFamily(attrSet);
}
public
boolean requiresLayout() {
return true;
}
} // TextPaneAppender