/*
 * Copyright (C) The Apache Software Foundation. All rights reserved.
 *
 * This software is published under the terms of the Apache Software
 * License version 1.1, a copy of which has been included with this
 * distribution in the LICENSE.APL file.  */

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;


/**
 * Experimental TextPaneAppender. 

 *
 *
 * Created: Sat Feb 26 18:50:27 2000 

 *
 * @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= 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