From 541bb378ddece2eab135a8066a16994e94436dea Mon Sep 17 00:00:00 2001 From: Giulio Cesare Solaroli Date: Mon, 03 Oct 2011 16:04:12 +0000 Subject: Merge pull request #1 from gcsolaroli/master First version of the restructured repository --- (limited to 'frontend/beta/js/YUI/logger.js') diff --git a/frontend/beta/js/YUI/logger.js b/frontend/beta/js/YUI/logger.js new file mode 100644 index 0000000..a2b40b2 --- a/dev/null +++ b/frontend/beta/js/YUI/logger.js @@ -0,0 +1,1559 @@ +/* +Copyright (c) 2006, Yahoo! Inc. All rights reserved. +Code licensed under the BSD License: +http://developer.yahoo.com/yui/license.txt +version: 0.12.0 +*/ + +/****************************************************************************/ +/****************************************************************************/ +/****************************************************************************/ + +/** + * The LogMsg class defines a single log message. + * + * @class LogMsg + * @constructor + * @param oConfigs {Object} Object literal of configuration params. + */ + YAHOO.widget.LogMsg = function(oConfigs) { + // Parse configs + if (typeof oConfigs == "object") { + for(var param in oConfigs) { + this[param] = oConfigs[param]; + } + } + }; + +///////////////////////////////////////////////////////////////////////////// +// +// Public member variables +// +///////////////////////////////////////////////////////////////////////////// + +/** + * Log message. + * + * @property msg + * @type String + */ +YAHOO.widget.LogMsg.prototype.msg = null; + +/** + * Log timestamp. + * + * @property time + * @type Date + */ +YAHOO.widget.LogMsg.prototype.time = null; + +/** + * Log category. + * + * @property category + * @type String + */ +YAHOO.widget.LogMsg.prototype.category = null; + +/** + * Log source. The first word passed in as the source argument. + * + * @property source + * @type String + */ +YAHOO.widget.LogMsg.prototype.source = null; + +/** + * Log source detail. The remainder of the string passed in as the source argument, not + * including the first word (if any). + * + * @property sourceDetail + * @type String + */ +YAHOO.widget.LogMsg.prototype.sourceDetail = null; + +/****************************************************************************/ +/****************************************************************************/ +/****************************************************************************/ + +/** + * The LogWriter class provides a mechanism to log messages through + * YAHOO.widget.Logger from a named source. + * + * @class LogWriter + * @constructor + * @param sSource {String} Source of LogWriter instance. + */ +YAHOO.widget.LogWriter = function(sSource) { + if(!sSource) { + YAHOO.log("Could not instantiate LogWriter due to invalid source.", + "error", "LogWriter"); + return; + } + this._source = sSource; + }; + +///////////////////////////////////////////////////////////////////////////// +// +// Public methods +// +///////////////////////////////////////////////////////////////////////////// + + /** + * Public accessor to the unique name of the LogWriter instance. + * + * @method toString + * @return {String} Unique name of the LogWriter instance. + */ +YAHOO.widget.LogWriter.prototype.toString = function() { + return "LogWriter " + this._sSource; +}; + +/** + * Logs a message attached to the source of the LogWriter. + * + * @method log + * @param sMsg {String} The log message. + * @param sCategory {String} Category name. + */ +YAHOO.widget.LogWriter.prototype.log = function(sMsg, sCategory) { + YAHOO.widget.Logger.log(sMsg, sCategory, this._source); +}; + +/** + * Public accessor to get the source name. + * + * @method getSource + * @return {String} The LogWriter source. + */ +YAHOO.widget.LogWriter.prototype.getSource = function() { + return this._sSource; +}; + +/** + * Public accessor to set the source name. + * + * @method setSource + * @param sSource {String} Source of LogWriter instance. + */ +YAHOO.widget.LogWriter.prototype.setSource = function(sSource) { + if(!sSource) { + YAHOO.log("Could not set source due to invalid source.", "error", this.toString()); + return; + } + else { + this._sSource = sSource; + } +}; + +///////////////////////////////////////////////////////////////////////////// +// +// Private member variables +// +///////////////////////////////////////////////////////////////////////////// + +/** + * Source of the LogWriter instance. + * + * @property _source + * @type String + * @private + */ +YAHOO.widget.LogWriter.prototype._source = null; + + + +/****************************************************************************/ +/****************************************************************************/ +/****************************************************************************/ + +/** + * The LogReader class provides UI to read messages logged to YAHOO.widget.Logger. + * + * @class LogReader + * @constructor + * @param elContainer {HTMLElement} (optional) DOM element reference of an existing DIV. + * @param elContainer {String} (optional) String ID of an existing DIV. + * @param oConfigs {Object} (optional) Object literal of configuration params. + */ +YAHOO.widget.LogReader = function(elContainer, oConfigs) { + var oSelf = this; + this._sName = YAHOO.widget.LogReader._index; + YAHOO.widget.LogReader._index++; + + // Parse config vars here + if (typeof oConfigs == "object") { + for(var param in oConfigs) { + this[param] = oConfigs[param]; + } + } + + // Attach container... + if(elContainer) { + if(typeof elContainer == "string") { + this._elContainer = document.getElementById(elContainer); + } + else if(elContainer.tagName) { + this._elContainer = elContainer; + } + this._elContainer.className = "yui-log"; + } + // ...or create container from scratch + if(!this._elContainer) { + if(YAHOO.widget.LogReader._elDefaultContainer) { + this._elContainer = YAHOO.widget.LogReader._elDefaultContainer; + } + else { + this._elContainer = document.body.appendChild(document.createElement("div")); + this._elContainer.id = "yui-log"; + this._elContainer.className = "yui-log"; + + YAHOO.widget.LogReader._elDefaultContainer = this._elContainer; + } + + // If implementer has provided container values, trust and set those + var containerStyle = this._elContainer.style; + if(this.width) { + containerStyle.width = this.width; + } + if(this.left) { + containerStyle.left = this.left; + } + if(this.right) { + containerStyle.right = this.right; + } + if(this.bottom) { + containerStyle.bottom = this.bottom; + } + if(this.top) { + containerStyle.top = this.top; + } + if(this.fontSize) { + containerStyle.fontSize = this.fontSize; + } + } + + if(this._elContainer) { + // Create header + if(!this._elHd) { + this._elHd = this._elContainer.appendChild(document.createElement("div")); + this._elHd.id = "yui-log-hd" + this._sName; + this._elHd.className = "yui-log-hd"; + + this._elCollapse = this._elHd.appendChild(document.createElement("div")); + this._elCollapse.className = "yui-log-btns"; + + this._btnCollapse = document.createElement("input"); + this._btnCollapse.type = "button"; + this._btnCollapse.style.fontSize = + YAHOO.util.Dom.getStyle(this._elContainer,"fontSize"); + this._btnCollapse.className = "yui-log-button"; + this._btnCollapse.value = "Collapse"; + this._btnCollapse = this._elCollapse.appendChild(this._btnCollapse); + YAHOO.util.Event.addListener( + oSelf._btnCollapse,'click',oSelf._onClickCollapseBtn,oSelf); + + this._title = this._elHd.appendChild(document.createElement("h4")); + this._title.innerHTML = "Logger Console"; + + // If Drag and Drop utility is available... + // ...and this container was created from scratch... + // ...then make the header draggable + if(YAHOO.util.DD && + (YAHOO.widget.LogReader._elDefaultContainer == this._elContainer)) { + var ylog_dd = new YAHOO.util.DD(this._elContainer.id); + ylog_dd.setHandleElId(this._elHd.id); + this._elHd.style.cursor = "move"; + } + } + // Ceate console + if(!this._elConsole) { + this._elConsole = + this._elContainer.appendChild(document.createElement("div")); + this._elConsole.className = "yui-log-bd"; + + // If implementer has provided console, trust and set those + if(this.height) { + this._elConsole.style.height = this.height; + } + } + // Don't create footer if disabled + if(!this._elFt && this.footerEnabled) { + this._elFt = this._elContainer.appendChild(document.createElement("div")); + this._elFt.className = "yui-log-ft"; + + this._elBtns = this._elFt.appendChild(document.createElement("div")); + this._elBtns.className = "yui-log-btns"; + + this._btnPause = document.createElement("input"); + this._btnPause.type = "button"; + this._btnPause.style.fontSize = + YAHOO.util.Dom.getStyle(this._elContainer,"fontSize"); + this._btnPause.className = "yui-log-button"; + this._btnPause.value = "Pause"; + this._btnPause = this._elBtns.appendChild(this._btnPause); + YAHOO.util.Event.addListener( + oSelf._btnPause,'click',oSelf._onClickPauseBtn,oSelf); + + this._btnClear = document.createElement("input"); + this._btnClear.type = "button"; + this._btnClear.style.fontSize = + YAHOO.util.Dom.getStyle(this._elContainer,"fontSize"); + this._btnClear.className = "yui-log-button"; + this._btnClear.value = "Clear"; + this._btnClear = this._elBtns.appendChild(this._btnClear); + YAHOO.util.Event.addListener( + oSelf._btnClear,'click',oSelf._onClickClearBtn,oSelf); + + this._elCategoryFilters = this._elFt.appendChild(document.createElement("div")); + this._elCategoryFilters.className = "yui-log-categoryfilters"; + this._elSourceFilters = this._elFt.appendChild(document.createElement("div")); + this._elSourceFilters.className = "yui-log-sourcefilters"; + } + } + + // Initialize internal vars + if(!this._buffer) { + this._buffer = []; // output buffer + } + // Timestamp of last log message to console + this._lastTime = YAHOO.widget.Logger.getStartTime(); + + // Subscribe to Logger custom events + YAHOO.widget.Logger.newLogEvent.subscribe(this._onNewLog, this); + YAHOO.widget.Logger.logResetEvent.subscribe(this._onReset, this); + + // Initialize category filters + this._categoryFilters = []; + var catsLen = YAHOO.widget.Logger.categories.length; + if(this._elCategoryFilters) { + for(var i=0; i < catsLen; i++) { + this._createCategoryCheckbox(YAHOO.widget.Logger.categories[i]); + } + } + // Initialize source filters + this._sourceFilters = []; + var sourcesLen = YAHOO.widget.Logger.sources.length; + if(this._elSourceFilters) { + for(var j=0; j < sourcesLen; j++) { + this._createSourceCheckbox(YAHOO.widget.Logger.sources[j]); + } + } + YAHOO.widget.Logger.categoryCreateEvent.subscribe(this._onCategoryCreate, this); + YAHOO.widget.Logger.sourceCreateEvent.subscribe(this._onSourceCreate, this); + + this._filterLogs(); + YAHOO.log("LogReader initialized", null, this.toString()); +}; + +///////////////////////////////////////////////////////////////////////////// +// +// Public member variables +// +///////////////////////////////////////////////////////////////////////////// + +/** + * Whether or not the log reader is enabled to output log messages. + * + * @property logReaderEnabled + * @type Boolean + * @default true + */ +YAHOO.widget.LogReader.prototype.logReaderEnabled = true; + +/** + * Public member to access CSS width of the log reader container. + * + * @property width + * @type String + */ +YAHOO.widget.LogReader.prototype.width = null; + +/** + * Public member to access CSS height of the log reader container. + * + * @property height + * @type String + */ +YAHOO.widget.LogReader.prototype.height = null; + +/** + * Public member to access CSS top position of the log reader container. + * + * @property top + * @type String + */ +YAHOO.widget.LogReader.prototype.top = null; + +/** + * Public member to access CSS left position of the log reader container. + * + * @property left + * @type String + */ +YAHOO.widget.LogReader.prototype.left = null; + +/** + * Public member to access CSS right position of the log reader container. + * + * @property right + * @type String + */ +YAHOO.widget.LogReader.prototype.right = null; + +/** + * Public member to access CSS bottom position of the log reader container. + * + * @property bottom + * @type String + */ +YAHOO.widget.LogReader.prototype.bottom = null; + +/** + * Public member to access CSS font size of the log reader container. + * + * @property fontSize + * @type String + */ +YAHOO.widget.LogReader.prototype.fontSize = null; + +/** + * Whether or not the footer UI is enabled for the log reader. + * + * @property footerEnabled + * @type Boolean + * @default true + */ +YAHOO.widget.LogReader.prototype.footerEnabled = true; + +/** + * Whether or not output is verbose (more readable). Setting to true will make + * output more compact (less readable). + * + * @property verboseOutput + * @type Boolean + * @default true + */ +YAHOO.widget.LogReader.prototype.verboseOutput = true; + +/** + * Whether or not newest message is printed on top. + * + * @property newestOnTop + * @type Boolean + */ +YAHOO.widget.LogReader.prototype.newestOnTop = true; + +/** + * Maximum number of messages a LogReader console will display. + * + * @property thresholdMax + * @type Number + * @default 500 + */ +YAHOO.widget.LogReader.prototype.thresholdMax = 500; + +/** + * When a LogReader console reaches its thresholdMax, it will clear out messages + * and print out the latest thresholdMin number of messages. + * + * @property thresholdMin + * @type Number + * @default 100 + */ +YAHOO.widget.LogReader.prototype.thresholdMin = 100; + +///////////////////////////////////////////////////////////////////////////// +// +// Public methods +// +///////////////////////////////////////////////////////////////////////////// + + /** + * Public accessor to the unique name of the LogReader instance. + * + * @method toString + * @return {String} Unique name of the LogReader instance. + */ +YAHOO.widget.LogReader.prototype.toString = function() { + return "LogReader instance" + this._sName; +}; +/** + * Pauses output of log messages. While paused, log messages are not lost, but + * get saved to a buffer and then output upon resume of log reader. + * + * @method pause + */ +YAHOO.widget.LogReader.prototype.pause = function() { + this._timeout = null; + this.logReaderEnabled = false; +}; + +/** + * Resumes output of log messages, including outputting any log messages that + * have been saved to buffer while paused. + * + * @method resume + */ +YAHOO.widget.LogReader.prototype.resume = function() { + this.logReaderEnabled = true; + this._printBuffer(); +}; + +/** + * Hides UI of log reader. Logging functionality is not disrupted. + * + * @method hide + */ +YAHOO.widget.LogReader.prototype.hide = function() { + this._elContainer.style.display = "none"; +}; + +/** + * Shows UI of log reader. Logging functionality is not disrupted. + * + * @method show + */ +YAHOO.widget.LogReader.prototype.show = function() { + this._elContainer.style.display = "block"; +}; + +/** + * Updates title to given string. + * + * @method setTitle + * @param sTitle {String} New title. + */ +YAHOO.widget.LogReader.prototype.setTitle = function(sTitle) { + this._title.innerHTML = this.html2Text(sTitle); +}; + +/** + * Gets timestamp of the last log. + * + * @method getLastTime + * @return {Date} Timestamp of the last log. + */ +YAHOO.widget.LogReader.prototype.getLastTime = function() { + return this._lastTime; +}; + +/** + * Formats message string to HTML for output to console. + * + * @method formatMsg + * @param oLogMsg {Object} Log message object. + * @return {String} HTML-formatted message for output to console. + */ +YAHOO.widget.LogReader.prototype.formatMsg = function(oLogMsg) { + var category = oLogMsg.category; + + // Label for color-coded display + var label = category.substring(0,4).toUpperCase(); + + // Calculate the elapsed time to be from the last item that passed through the filter, + // not the absolute previous item in the stack + + var time = oLogMsg.time; + if (time.toLocaleTimeString) { + var localTime = time.toLocaleTimeString(); + } + else { + localTime = time.toString(); + } + + var msecs = time.getTime(); + var startTime = YAHOO.widget.Logger.getStartTime(); + var totalTime = msecs - startTime; + var elapsedTime = msecs - this.getLastTime(); + + var source = oLogMsg.source; + var sourceDetail = oLogMsg.sourceDetail; + var sourceAndDetail = (sourceDetail) ? + source + " " + sourceDetail : source; + + // Escape HTML entities in the log message itself for output to console + var msg = this.html2Text(oLogMsg.msg); + + // Verbose output includes extra line breaks + var output = (this.verboseOutput) ? + ["

", label, " ", + totalTime, "ms (+", elapsedTime, ") ", + localTime, ": ", + "

", + sourceAndDetail, + ":

", + msg, + "

"] : + + ["

", label, " ", + totalTime, "ms (+", elapsedTime, ") ", + localTime, ": ", + sourceAndDetail, ": ", + msg,"

"]; + + return output.join(""); +}; + +/** + * Converts input chars "<", ">", and "&" to HTML entities. + * + * @method html2Text + * @param sHtml {String} String to convert. + * @private + */ +YAHOO.widget.LogReader.prototype.html2Text = function(sHtml) { + if(sHtml) { + sHtml += ""; + return sHtml.replace(/&/g, "&").replace(//g, ">"); + } + return ""; +}; + +///////////////////////////////////////////////////////////////////////////// +// +// Private member variables +// +///////////////////////////////////////////////////////////////////////////// + +/** + * Internal class member to index multiple log reader instances. + * + * @property _memberName + * @static + * @type Number + * @default 0 + * @private + */ +YAHOO.widget.LogReader._index = 0; + +/** + * Name of LogReader instance. + * + * @property _sName + * @type String + * @private + */ +YAHOO.widget.LogReader.prototype._sName = null; + +/** + * A class member shared by all log readers if a container needs to be + * created during instantiation. Will be null if a container element never needs to + * be created on the fly, such as when the implementer passes in their own element. + * + * @property _elDefaultContainer + * @type HTMLElement + * @private + */ +YAHOO.widget.LogReader._elDefaultContainer = null; + +/** + * Buffer of log message objects for batch output. + * + * @property _buffer + * @type Object[] + * @private + */ +YAHOO.widget.LogReader.prototype._buffer = null; + +/** + * Number of log messages output to console. + * + * @property _consoleMsgCount + * @type Number + * @default 0 + * @private + */ +YAHOO.widget.LogReader.prototype._consoleMsgCount = 0; + +/** + * Date of last output log message. + * + * @property _lastTime + * @type Date + * @private + */ +YAHOO.widget.LogReader.prototype._lastTime = null; + +/** + * Batched output timeout ID. + * + * @property _timeout + * @type Number + * @private + */ +YAHOO.widget.LogReader.prototype._timeout = null; + +/** + * Array of filters for log message categories. + * + * @property _categoryFilters + * @type String[] + * @private + */ +YAHOO.widget.LogReader.prototype._categoryFilters = null; + +/** + * Array of filters for log message sources. + * + * @property _sourceFilters + * @type String[] + * @private + */ +YAHOO.widget.LogReader.prototype._sourceFilters = null; + +/** + * Log reader container element. + * + * @property _elContainer + * @type HTMLElement + * @private + */ +YAHOO.widget.LogReader.prototype._elContainer = null; + +/** + * Log reader header element. + * + * @property _elHd + * @type HTMLElement + * @private + */ +YAHOO.widget.LogReader.prototype._elHd = null; + +/** + * Log reader collapse element. + * + * @property _elCollapse + * @type HTMLElement + * @private + */ +YAHOO.widget.LogReader.prototype._elCollapse = null; + +/** + * Log reader collapse button element. + * + * @property _btnCollapse + * @type HTMLElement + * @private + */ +YAHOO.widget.LogReader.prototype._btnCollapse = null; + +/** + * Log reader title header element. + * + * @property _title + * @type HTMLElement + * @private + */ +YAHOO.widget.LogReader.prototype._title = null; + +/** + * Log reader console element. + * + * @property _elConsole + * @type HTMLElement + * @private + */ +YAHOO.widget.LogReader.prototype._elConsole = null; + +/** + * Log reader footer element. + * + * @property _elFt + * @type HTMLElement + * @private + */ +YAHOO.widget.LogReader.prototype._elFt = null; + +/** + * Log reader buttons container element. + * + * @property _elBtns + * @type HTMLElement + * @private + */ +YAHOO.widget.LogReader.prototype._elBtns = null; + +/** + * Container element for log reader category filter checkboxes. + * + * @property _elCategoryFilters + * @type HTMLElement + * @private + */ +YAHOO.widget.LogReader.prototype._elCategoryFilters = null; + +/** + * Container element for log reader source filter checkboxes. + * + * @property _elSourceFilters + * @type HTMLElement + * @private + */ +YAHOO.widget.LogReader.prototype._elSourceFilters = null; + +/** + * Log reader pause button element. + * + * @property _btnPause + * @type HTMLElement + * @private + */ +YAHOO.widget.LogReader.prototype._btnPause = null; + +/** + * Clear button element. + * + * @property _btnClear + * @type HTMLElement + * @private + */ +YAHOO.widget.LogReader.prototype._btnClear = null; + +///////////////////////////////////////////////////////////////////////////// +// +// Private methods +// +///////////////////////////////////////////////////////////////////////////// + +/** + * Creates the UI for a category filter in the log reader footer element. + * + * @method _createCategoryCheckbox + * @param sCategory {String} Category name. + * @private + */ +YAHOO.widget.LogReader.prototype._createCategoryCheckbox = function(sCategory) { + var oSelf = this; + + if(this._elFt) { + var elParent = this._elCategoryFilters; + var filters = this._categoryFilters; + + var elFilter = elParent.appendChild(document.createElement("span")); + elFilter.className = "yui-log-filtergrp"; + // Append el at the end so IE 5.5 can set "type" attribute + // and THEN set checked property + var chkCategory = document.createElement("input"); + chkCategory.id = "yui-log-filter-" + sCategory + this._sName; + chkCategory.className = "yui-log-filter-" + sCategory; + chkCategory.type = "checkbox"; + chkCategory.category = sCategory; + chkCategory = elFilter.appendChild(chkCategory); + chkCategory.checked = true; + + // Add this checked filter to the internal array of filters + filters.push(sCategory); + // Subscribe to the click event + YAHOO.util.Event.addListener(chkCategory,'click',oSelf._onCheckCategory,oSelf); + + // Create and class the text label + var lblCategory = elFilter.appendChild(document.createElement("label")); + lblCategory.htmlFor = chkCategory.id; + lblCategory.className = sCategory; + lblCategory.innerHTML = sCategory; + } +}; + +/** + * Creates a checkbox in the log reader footer element to filter by source. + * + * @method _createSourceCheckbox + * @param sSource {String} Source name. + * @private + */ +YAHOO.widget.LogReader.prototype._createSourceCheckbox = function(sSource) { + var oSelf = this; + + if(this._elFt) { + var elParent = this._elSourceFilters; + var filters = this._sourceFilters; + + var elFilter = elParent.appendChild(document.createElement("span")); + elFilter.className = "yui-log-filtergrp"; + + // Append el at the end so IE 5.5 can set "type" attribute + // and THEN set checked property + var chkSource = document.createElement("input"); + chkSource.id = "yui-log-filter" + sSource + this._sName; + chkSource.className = "yui-log-filter" + sSource; + chkSource.type = "checkbox"; + chkSource.source = sSource; + chkSource = elFilter.appendChild(chkSource); + chkSource.checked = true; + + // Add this checked filter to the internal array of filters + filters.push(sSource); + // Subscribe to the click event + YAHOO.util.Event.addListener(chkSource,'click',oSelf._onCheckSource,oSelf); + + // Create and class the text label + var lblSource = elFilter.appendChild(document.createElement("label")); + lblSource.htmlFor = chkSource.id; + lblSource.className = sSource; + lblSource.innerHTML = sSource; + } +}; + +/** + * Reprints all log messages in the stack through filters. + * + * @method _filterLogs + * @private + */ +YAHOO.widget.LogReader.prototype._filterLogs = function() { + // Reprint stack with new filters + if (this._elConsole !== null) { + this._clearConsole(); + this._printToConsole(YAHOO.widget.Logger.getStack()); + } +}; + +/** + * Clears all outputted log messages from the console and resets the time of the + * last output log message. + * + * @method _clearConsole + * @private + */ +YAHOO.widget.LogReader.prototype._clearConsole = function() { + // Clear the buffer of any pending messages + this._timeout = null; + this._buffer = []; + this._consoleMsgCount = 0; + + // Reset the rolling timer + this._lastTime = YAHOO.widget.Logger.getStartTime(); + + var elConsole = this._elConsole; + while(elConsole.hasChildNodes()) { + elConsole.removeChild(elConsole.firstChild); + } +}; + +/** + * Sends buffer of log messages to output and clears buffer. + * + * @method _printBuffer + * @private + */ +YAHOO.widget.LogReader.prototype._printBuffer = function() { + this._timeout = null; + + if(this._elConsole !== null) { + var thresholdMax = this.thresholdMax; + thresholdMax = (thresholdMax && !isNaN(thresholdMax)) ? thresholdMax : 500; + if(this._consoleMsgCount < thresholdMax) { + var entries = []; + for (var i=0; i this.thresholdMax)) { + thresholdMin = 0; + } + var entriesStartIndex = (entriesLen > thresholdMin) ? (entriesLen - thresholdMin) : 0; + + // Iterate through all log entries + var sourceFiltersLen = this._sourceFilters.length; + var categoryFiltersLen = this._categoryFilters.length; + for(var i=entriesStartIndex; i tag instead of 
 tag (for wrapping)

+            var container = (this.verboseOutput) ? "CODE" : "PRE";

+            var oNewElement = (this.newestOnTop) ?

+                this._elConsole.insertBefore(

+                    document.createElement(container),this._elConsole.firstChild):

+                this._elConsole.appendChild(document.createElement(container));

+

+            oNewElement.innerHTML = output;

+            this._consoleMsgCount++;

+            this._lastTime = entry.time.getTime();

+        }

+    }

+};

+

+/////////////////////////////////////////////////////////////////////////////

+//

+// Private event handlers

+//

+/////////////////////////////////////////////////////////////////////////////

+

+/**

+ * Handles Logger's categoryCreateEvent.

+ *

+ * @method _onCategoryCreate

+ * @param sType {String} The event.

+ * @param aArgs {Object[]} Data passed from event firer.

+ * @param oSelf {Object} The LogReader instance.

+ * @private

+ */

+YAHOO.widget.LogReader.prototype._onCategoryCreate = function(sType, aArgs, oSelf) {

+    var category = aArgs[0];

+    if(oSelf._elFt) {

+        oSelf._createCategoryCheckbox(category);

+    }

+};

+

+/**

+ * Handles Logger's sourceCreateEvent.

+ *

+ * @method _onSourceCreate

+ * @param sType {String} The event.

+ * @param aArgs {Object[]} Data passed from event firer.

+ * @param oSelf {Object} The LogReader instance.

+ * @private

+ */

+YAHOO.widget.LogReader.prototype._onSourceCreate = function(sType, aArgs, oSelf) {

+    var source = aArgs[0];

+    if(oSelf._elFt) {

+        oSelf._createSourceCheckbox(source);

+    }

+};

+

+/**

+ * Handles check events on the category filter checkboxes.

+ *

+ * @method _onCheckCategory

+ * @param v {HTMLEvent} The click event.

+ * @param oSelf {Object} The LogReader instance.

+ * @private

+ */

+YAHOO.widget.LogReader.prototype._onCheckCategory = function(v, oSelf) {

+    var newFilter = this.category;

+    var filtersArray = oSelf._categoryFilters;

+

+    if(!this.checked) { // Remove category from filters

+        for(var i=0; i 0) {

+                // Substring until first space

+                sClass = sSource.substring(0,spaceIndex);

+                // The rest of the source

+                sDetail = sSource.substring(spaceIndex,sSource.length);

+            }

+            else {

+                sClass = sSource;

+            }

+            if(this._isNewSource(sClass)) {

+                this._createNewSource(sClass);

+            }

+        }

+

+        var timestamp = new Date();

+        var logEntry = new YAHOO.widget.LogMsg({

+            msg: sMsg,

+            time: timestamp,

+            category: sCategory,

+            source: sClass,

+            sourceDetail: sDetail

+        });

+

+        var stack = this._stack;

+        var maxStackEntries = this.maxStackEntries;

+        if(maxStackEntries && !isNaN(maxStackEntries) &&

+            (stack.length >= maxStackEntries)) {

+            stack.shift();

+        }

+        stack.push(logEntry);

+        this.newLogEvent.fire(logEntry);

+

+        if(this._browserConsoleEnabled) {

+            this._printToBrowserConsole(logEntry);

+        }

+        return true;

+    }

+    else {

+        return false;

+    }

+};

+

+/**

+ * Resets internal stack and startTime, enables Logger, and fires logResetEvent.

+ *

+ * @method reset

+ */

+YAHOO.widget.Logger.reset = function() {

+    this._stack = [];

+    this._startTime = new Date().getTime();

+    this.loggerEnabled = true;

+    this.log("Logger reset");

+    this.logResetEvent.fire();

+};

+

+/**

+ * Public accessor to internal stack of log message objects.

+ *

+ * @method getStack

+ * @return {Object[]} Array of log message objects.

+ */

+YAHOO.widget.Logger.getStack = function() {

+    return this._stack;

+};

+

+/**

+ * Public accessor to internal start time.

+ *

+ * @method getStartTime

+ * @return {Date} Internal date of when Logger singleton was initialized.

+ */

+YAHOO.widget.Logger.getStartTime = function() {

+    return this._startTime;

+};

+

+/**

+ * Disables output to the browser's global console.log() function, which is used

+ * by the Firebug extension to Firefox as well as Safari.

+ *

+ * @method disableBrowserConsole

+ */

+YAHOO.widget.Logger.disableBrowserConsole = function() {

+    YAHOO.log("Logger output to the function console.log() has been disabled.");

+    this._browserConsoleEnabled = false;

+};

+

+/**

+ * Enables output to the browser's global console.log() function, which is used

+ * by the Firebug extension to Firefox as well as Safari.

+ *

+ * @method enableBrowserConsole

+ */

+YAHOO.widget.Logger.enableBrowserConsole = function() {

+    this._browserConsoleEnabled = true;

+    YAHOO.log("Logger output to the function console.log() has been enabled.");

+};

+

+/////////////////////////////////////////////////////////////////////////////

+//

+// Public events

+//

+/////////////////////////////////////////////////////////////////////////////

+

+ /**

+ * Fired when a new category has been created.

+ *

+ * @event categoryCreateEvent

+ * @param sCategory {String} Category name.

+ */

+YAHOO.widget.Logger.categoryCreateEvent =

+    new YAHOO.util.CustomEvent("categoryCreate", this, true);

+

+ /**

+ * Fired when a new source has been named.

+ *

+ * @event sourceCreateEvent

+ * @param sSource {String} Source name.

+ */

+YAHOO.widget.Logger.sourceCreateEvent =

+    new YAHOO.util.CustomEvent("sourceCreate", this, true);

+

+ /**

+ * Fired when a new log message has been created.

+ *

+ * @event newLogEvent

+ * @param sMsg {String} Log message.

+ */

+YAHOO.widget.Logger.newLogEvent = new YAHOO.util.CustomEvent("newLog", this, true);

+

+/**

+ * Fired when the Logger has been reset has been created.

+ *

+ * @event logResetEvent

+ */

+YAHOO.widget.Logger.logResetEvent = new YAHOO.util.CustomEvent("logReset", this, true);

+

+/////////////////////////////////////////////////////////////////////////////

+//

+// Private methods

+//

+/////////////////////////////////////////////////////////////////////////////

+

+/**

+ * Creates a new category of log messages and fires categoryCreateEvent.

+ *

+ * @method _createNewCategory

+ * @param sCategory {String} Category name.

+ * @private

+ */

+YAHOO.widget.Logger._createNewCategory = function(sCategory) {

+    this.categories.push(sCategory);

+    this.categoryCreateEvent.fire(sCategory);

+};

+

+/**

+ * Checks to see if a category has already been created.

+ *

+ * @method _isNewCategory

+ * @param sCategory {String} Category name.

+ * @return {Boolean} Returns true if category is unknown, else returns false.

+ * @private

+ */

+YAHOO.widget.Logger._isNewCategory = function(sCategory) {

+    for(var i=0; i < this.categories.length; i++) {

+        if(sCategory == this.categories[i]) {

+            return false;

+        }

+    }

+    return true;

+};

+

+/**

+ * Creates a new source of log messages and fires sourceCreateEvent.

+ *

+ * @method _createNewSource

+ * @param sSource {String} Source name.

+ * @private

+ */

+YAHOO.widget.Logger._createNewSource = function(sSource) {

+    this.sources.push(sSource);

+    this.sourceCreateEvent.fire(sSource);

+};

+

+/**

+ * Checks to see if a source already exists.

+ *

+ * @method _isNewSource

+ * @param sSource {String} Source name.

+ * @return {Boolean} Returns true if source is unknown, else returns false.

+ * @private

+ */

+YAHOO.widget.Logger._isNewSource = function(sSource) {

+    if(sSource) {

+        for(var i=0; i < this.sources.length; i++) {

+            if(sSource == this.sources[i]) {

+                return false;

+            }

+        }

+        return true;

+    }

+};

+

+/**

+ * Outputs a log message to global console.log() function.

+ *

+ * @method _printToBrowserConsole

+ * @param oEntry {Object} Log entry object.

+ * @private

+ */

+YAHOO.widget.Logger._printToBrowserConsole = function(oEntry) {

+    if(window.console && console.log) {

+        var category = oEntry.category;

+        var label = oEntry.category.substring(0,4).toUpperCase();

+

+        var time = oEntry.time;

+        if (time.toLocaleTimeString) {

+            var localTime  = time.toLocaleTimeString();

+        }

+        else {

+            localTime = time.toString();

+        }

+

+        var msecs = time.getTime();

+        var elapsedTime = (YAHOO.widget.Logger._lastTime) ?

+            (msecs - YAHOO.widget.Logger._lastTime) : 0;

+        YAHOO.widget.Logger._lastTime = msecs;

+

+        var output =

+            localTime + " (" +

+            elapsedTime + "ms): " +

+            oEntry.source + ": " +

+            oEntry.msg;

+

+        console.log(output);

+    }

+};

+

+/////////////////////////////////////////////////////////////////////////////

+//

+// Private event handlers

+//

+/////////////////////////////////////////////////////////////////////////////

+

+/**

+ * Handles logging of messages due to window error events.

+ *

+ * @method _onWindowError

+ * @param sMsg {String} The error message.

+ * @param sUrl {String} URL of the error.

+ * @param sLine {String} Line number of the error.

+ * @private

+ */

+YAHOO.widget.Logger._onWindowError = function(sMsg,sUrl,sLine) {

+    // Logger is not in scope of this event handler

+    try {

+        YAHOO.widget.Logger.log(sMsg+' ('+sUrl+', line '+sLine+')', "window");

+        if(YAHOO.widget.Logger._origOnWindowError) {

+            YAHOO.widget.Logger._origOnWindowError();

+        }

+    }

+    catch(e) {

+        return false;

+    }

+};

+

+/////////////////////////////////////////////////////////////////////////////

+//

+// Enable handling of native JavaScript errors

+// NB: Not all browsers support the window.onerror event

+//

+/////////////////////////////////////////////////////////////////////////////

+

+if(window.onerror) {

+    // Save any previously defined handler to call

+    YAHOO.widget.Logger._origOnWindowError = window.onerror;

+}

+window.onerror = YAHOO.widget.Logger._onWindowError;

+

+/////////////////////////////////////////////////////////////////////////////

+//

+// First log

+//

+/////////////////////////////////////////////////////////////////////////////

+

+YAHOO.widget.Logger.log("Logger initialized");

+

--
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