| /* |
| * Copyright 2010 Google Inc. |
| * |
| * Licensed 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 com.google.gwt.logging.client; |
| |
| import com.google.gwt.logging.impl.FormatterImpl; |
| import com.google.gwt.logging.impl.StackTracePrintStream; |
| |
| import java.util.logging.Level; |
| import java.util.logging.LogRecord; |
| |
| /** |
| * Formats LogRecords into HTML. Subclasses should override the GetHtmlPrefix |
| * and GetHtmlSuffix methods rather than format to ensure that the message |
| * is properly escaped. |
| */ |
| public class HtmlLogFormatter extends FormatterImpl { |
| private boolean showStackTraces; |
| |
| public HtmlLogFormatter(boolean showStackTraces) { |
| this.showStackTraces = showStackTraces; |
| } |
| |
| @Override |
| public String format(LogRecord event) { |
| final StringBuilder html = new StringBuilder(); |
| html.append(getHtmlPrefix(event)); |
| html.append(getRecordInfo(event, "<br>")); |
| html.append(getEscaped(event.getMessage())); |
| if (showStackTraces && event.getThrown() != null) { |
| html.append("<br>"); |
| event.getThrown().printStackTrace(new StackTracePrintStream(html) { |
| @Override |
| public void append(String str) { |
| html.append(getEscaped(str)); |
| } |
| |
| @Override |
| public void newLine() { |
| html.append("<br>"); |
| } |
| }); |
| } |
| html.append(getHtmlSuffix(event)); |
| return html.toString(); |
| } |
| |
| protected String getHtmlPrefix(LogRecord event) { |
| StringBuilder prefix = new StringBuilder(); |
| prefix.append("<span style='color:"); |
| prefix.append(getColor(event.getLevel().intValue())); |
| prefix.append("'>"); |
| prefix.append("<code>"); |
| return prefix.toString(); |
| } |
| |
| protected String getHtmlSuffix(LogRecord event) { |
| return "</code></span>"; |
| } |
| |
| private String getColor(int logLevel) { |
| if (logLevel == Level.OFF.intValue()) { |
| return "#000"; // black |
| } |
| if (logLevel >= Level.SEVERE.intValue()) { |
| return "#F00"; // bright red |
| } |
| if (logLevel >= Level.WARNING.intValue()) { |
| return "#E56717"; // dark orange |
| } |
| if (logLevel >= Level.INFO.intValue()) { |
| return "#20b000"; // green |
| } |
| if (logLevel >= Level.CONFIG.intValue()) { |
| return "#2B60DE"; // blue |
| } |
| if (logLevel >= Level.FINE.intValue()) { |
| return "#F0F"; // purple |
| } |
| if (logLevel >= Level.FINER.intValue()) { |
| return "#F0F"; // purple |
| } |
| if (logLevel >= Level.FINEST.intValue()) { |
| return "#F0F"; // purple |
| } |
| return "#000"; // black |
| } |
| |
| private String getEscaped(String text) { |
| text = text.replaceAll("<", "<"); |
| text = text.replaceAll(">", ">"); |
| text = text.replaceAll("\t", " "); |
| return text; |
| } |
| |
| } |