YUI recommends YUI 3.
YUI 2 has been deprecated since 2011. This site acts as an archive for files and documentation.
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/**
* 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) {
this._sName = YAHOO.widget.LogReader._index;
YAHOO.widget.LogReader._index++;
// Internal vars
this._buffer = []; // output buffer
this._filterCheckboxes = {}; // pointers to checkboxes
this._lastTime = YAHOO.widget.Logger.getStartTime(); // timestamp of last log message to console
// Parse config vars here
if (oConfigs && (oConfigs.constructor == Object)) {
for(var param in oConfigs) {
this[param] = oConfigs[param];
}
}
this._initContainerEl(elContainer);
if(!this._elContainer) {
YAHOO.log("Could not instantiate LogReader due to an invalid container element " +
elContainer, "error", this.toString());
return;
}
this._initHeaderEl();
this._initConsoleEl();
this._initFooterEl();
this._initDragDrop();
this._initCategories();
this._initSources();
// Subscribe to Logger custom events
YAHOO.widget.Logger.newLogEvent.subscribe(this._onNewLog, this);
YAHOO.widget.Logger.logResetEvent.subscribe(this._onReset, this);
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());
};
/////////////////////////////////////////////////////////////////////////////
//
// Static member variables
//
/////////////////////////////////////////////////////////////////////////////
YAHOO.lang.augmentObject(YAHOO.widget.LogReader, {
/**
* Internal class member to index multiple LogReader instances.
*
* @property _memberName
* @static
* @type Number
* @default 0
* @private
*/
_index : 0,
/**
* Node template for the log entries
* @property ENTRY_TEMPLATE
* @static
* @type {HTMLElement}
* @default PRE.yui-log-entry element
*/
ENTRY_TEMPLATE : (function () {
var t = document.createElement('pre');
YAHOO.util.Dom.addClass(t,'yui-log-entry');
return t;
})(),
/**
* Template used for innerHTML of verbose entry output.
* @property VERBOSE_TEMPLATE
* @static
* @default "<span class='{category}'>{label}</span>{totalTime}ms (+{elapsedTime}) {localTime}:</p><p>{sourceAndDetail}</p><p>{message}</p>"
*/
VERBOSE_TEMPLATE : "<span class='{category}'>{label}</span>{totalTime}ms (+{elapsedTime}) {localTime}:</p><p>{sourceAndDetail}</p><p>{message}</p>",
/**
* Template used for innerHTML of compact entry output.
* @property BASIC_TEMPLATE
* @static
* @default "<p><span class='{category}'>{label}</span>{totalTime}ms (+{elapsedTime}) {localTime}: {sourceAndDetail}: {message}</p>"
*/
BASIC_TEMPLATE : "<p><span class='{category}'>{label}</span>{totalTime}ms (+{elapsedTime}) {localTime}: {sourceAndDetail}: {message}</p>"
});
/////////////////////////////////////////////////////////////////////////////
//
// Public member variables
//
/////////////////////////////////////////////////////////////////////////////
YAHOO.widget.LogReader.prototype = {
/**
* Whether or not LogReader is enabled to output log messages.
*
* @property logReaderEnabled
* @type Boolean
* @default true
*/
logReaderEnabled : true,
/**
* Public member to access CSS width of the LogReader container.
*
* @property width
* @type String
*/
width : null,
/**
* Public member to access CSS height of the LogReader container.
*
* @property height
* @type String
*/
height : null,
/**
* Public member to access CSS top position of the LogReader container.
*
* @property top
* @type String
*/
top : null,
/**
* Public member to access CSS left position of the LogReader container.
*
* @property left
* @type String
*/
left : null,
/**
* Public member to access CSS right position of the LogReader container.
*
* @property right
* @type String
*/
right : null,
/**
* Public member to access CSS bottom position of the LogReader container.
*
* @property bottom
* @type String
*/
bottom : null,
/**
* Public member to access CSS font size of the LogReader container.
*
* @property fontSize
* @type String
*/
fontSize : null,
/**
* Whether or not the footer UI is enabled for the LogReader.
*
* @property footerEnabled
* @type Boolean
* @default true
*/
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
*/
verboseOutput : true,
/**
* Custom output format for log messages. Defaults to null, which falls
* back to verboseOutput param deciding between LogReader.VERBOSE_TEMPLATE
* and LogReader.BASIC_TEMPLATE. Use bracketed place holders to mark where
* message info should go. Available place holder names include:
* <ul>
* <li>category</li>
* <li>label</li>
* <li>sourceAndDetail</li>
* <li>message</li>
* <li>localTime</li>
* <li>elapsedTime</li>
* <li>totalTime</li>
* </ul>
*
* @property entryFormat
* @type String
* @default null
*/
entryFormat : null,
/**
* Whether or not newest message is printed on top.
*
* @property newestOnTop
* @type Boolean
*/
newestOnTop : true,
/**
* Output timeout buffer in milliseconds.
*
* @property outputBuffer
* @type Number
* @default 100
*/
outputBuffer : 100,
/**
* Maximum number of messages a LogReader console will display.
*
* @property thresholdMax
* @type Number
* @default 500
*/
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
*/
thresholdMin : 100,
/**
* True when LogReader is in a collapsed state, false otherwise.
*
* @property isCollapsed
* @type Boolean
* @default false
*/
isCollapsed : false,
/**
* True when LogReader is in a paused state, false otherwise.
*
* @property isPaused
* @type Boolean
* @default false
*/
isPaused : false,
/**
* Enables draggable LogReader if DragDrop Utility is present.
*
* @property draggable
* @type Boolean
* @default true
*/
draggable : true,
/////////////////////////////////////////////////////////////////////////////
//
// Public methods
//
/////////////////////////////////////////////////////////////////////////////
/**
* Public accessor to the unique name of the LogReader instance.
*
* @method toString
* @return {String} Unique name of the LogReader instance.
*/
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 LogReader.
*
* @method pause
*/
pause : function() {
this.isPaused = true;
this._btnPause.value = "Resume";
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
*/
resume : function() {
this.isPaused = false;
this._btnPause.value = "Pause";
this.logReaderEnabled = true;
this._printBuffer();
},
/**
* Hides UI of LogReader. Logging functionality is not disrupted.
*
* @method hide
*/
hide : function() {
this._elContainer.style.display = "none";
},
/**
* Shows UI of LogReader. Logging functionality is not disrupted.
*
* @method show
*/
show : function() {
this._elContainer.style.display = "block";
},
/**
* Collapses UI of LogReader. Logging functionality is not disrupted.
*
* @method collapse
*/
collapse : function() {
this._elConsole.style.display = "none";
if(this._elFt) {
this._elFt.style.display = "none";
}
this._btnCollapse.value = "Expand";
this.isCollapsed = true;
},
/**
* Expands UI of LogReader. Logging functionality is not disrupted.
*
* @method expand
*/
expand : function() {
this._elConsole.style.display = "block";
if(this._elFt) {
this._elFt.style.display = "block";
}
this._btnCollapse.value = "Collapse";
this.isCollapsed = false;
},
/**
* Returns related checkbox element for given filter (i.e., category or source).
*
* @method getCheckbox
* @param {String} Category or source name.
* @return {Array} Array of all filter checkboxes.
*/
getCheckbox : function(filter) {
return this._filterCheckboxes[filter];
},
/**
* Returns array of enabled categories.
*
* @method getCategories
* @return {String[]} Array of enabled categories.
*/
getCategories : function() {
return this._categoryFilters;
},
/**
* Shows log messages associated with given category.
*
* @method showCategory
* @param {String} Category name.
*/
showCategory : function(sCategory) {
var filtersArray = this._categoryFilters;
// Don't do anything if category is already enabled
// Use Array.indexOf if available...
if(filtersArray.indexOf) {
if(filtersArray.indexOf(sCategory) > -1) {
return;
}
}
// ...or do it the old-fashioned way
else {
for(var i=0; i<filtersArray.length; i++) {
if(filtersArray[i] === sCategory){
return;
}
}
}
this._categoryFilters.push(sCategory);
this._filterLogs();
var elCheckbox = this.getCheckbox(sCategory);
if(elCheckbox) {
elCheckbox.checked = true;
}
},
/**
* Hides log messages associated with given category.
*
* @method hideCategory
* @param {String} Category name.
*/
hideCategory : function(sCategory) {
var filtersArray = this._categoryFilters;
for(var i=0; i<filtersArray.length; i++) {
if(sCategory == filtersArray[i]) {
filtersArray.splice(i, 1);
break;
}
}
this._filterLogs();
var elCheckbox = this.getCheckbox(sCategory);
if(elCheckbox) {
elCheckbox.checked = false;
}
},
/**
* Returns array of enabled sources.
*
* @method getSources
* @return {Array} Array of enabled sources.
*/
getSources : function() {
return this._sourceFilters;
},
/**
* Shows log messages associated with given source.
*
* @method showSource
* @param {String} Source name.
*/
showSource : function(sSource) {
var filtersArray = this._sourceFilters;
// Don't do anything if category is already enabled
// Use Array.indexOf if available...
if(filtersArray.indexOf) {
if(filtersArray.indexOf(sSource) > -1) {
return;
}
}
// ...or do it the old-fashioned way
else {
for(var i=0; i<filtersArray.length; i++) {
if(sSource == filtersArray[i]){
return;
}
}
}
filtersArray.push(sSource);
this._filterLogs();
var elCheckbox = this.getCheckbox(sSource);
if(elCheckbox) {
elCheckbox.checked = true;
}
},
/**
* Hides log messages associated with given source.
*
* @method hideSource
* @param {String} Source name.
*/
hideSource : function(sSource) {
var filtersArray = this._sourceFilters;
for(var i=0; i<filtersArray.length; i++) {
if(sSource == filtersArray[i]) {
filtersArray.splice(i, 1);
break;
}
}
this._filterLogs();
var elCheckbox = this.getCheckbox(sSource);
if(elCheckbox) {
elCheckbox.checked = false;
}
},
/**
* Does not delete any log messages, but clears all printed log messages from
* the console. Log messages will be printed out again if user re-filters. The
* static method YAHOO.widget.Logger.reset() should be called in order to
* actually delete log messages.
*
* @method clearConsole
*/
clearConsole : function() {
// Clear the buffer of any pending messages
this._timeout = null;
this._buffer = [];
this._consoleMsgCount = 0;
var elConsole = this._elConsole;
elConsole.innerHTML = '';
},
/**
* Updates title to given string.
*
* @method setTitle
* @param sTitle {String} New title.
*/
setTitle : function(sTitle) {
this._title.innerHTML = this.html2Text(sTitle);
},
/**
* Gets timestamp of the last log.
*
* @method getLastTime
* @return {Date} Timestamp of the last log.
*/
getLastTime : function() {
return this._lastTime;
},
formatMsg : function (entry) {
var Static = YAHOO.widget.LogReader,
entryFormat = this.entryFormat || (this.verboseOutput ?
Static.VERBOSE_TEMPLATE : Static.BASIC_TEMPLATE),
info = {
category : entry.category,
// Label for color-coded display
label : entry.category.substring(0,4).toUpperCase(),
sourceAndDetail : entry.sourceDetail ?
entry.source + " " + entry.sourceDetail :
entry.source,
// Escape HTML entities in the log message itself for output
// to console
message : this.html2Text(entry.msg || entry.message || '')
};
// Add time info
if (entry.time && entry.time.getTime) {
info.localTime = entry.time.toLocaleTimeString ?
entry.time.toLocaleTimeString() :
entry.time.toString();
// Calculate the elapsed time to be from the last item that
// passed through the filter, not the absolute previous item
// in the stack
info.elapsedTime = entry.time.getTime() - this.getLastTime();
info.totalTime = entry.time.getTime() -
YAHOO.widget.Logger.getStartTime();
}
var msg = Static.ENTRY_TEMPLATE.cloneNode(true);
if (this.verboseOutput) {
msg.className += ' yui-log-verbose';
}
msg.innerHTML = YAHOO.lang.substitute(entryFormat, info);
return msg;
},
/**
* Converts input chars "<", ">", and "&" to HTML entities.
*
* @method html2Text
* @param sHtml {String} String to convert.
* @private
*/
html2Text : function(sHtml) {
if(sHtml) {
sHtml += "";
return sHtml.replace(/&/g, "&").replace(/</g, "<").replace(/>/g, ">");
}
return "";
},
/////////////////////////////////////////////////////////////////////////////
//
// Private member variables
//
/////////////////////////////////////////////////////////////////////////////
/**
* Name of LogReader instance.
*
* @property _sName
* @type String
* @private
*/
_sName : null,
//TODO: remove
/**
* A class member shared by all LogReaders 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
*/
_buffer : null,
/**
* Number of log messages output to console.
*
* @property _consoleMsgCount
* @type Number
* @default 0
* @private
*/
_consoleMsgCount : 0,
/**
* Date of last output log message.
*
* @property _lastTime
* @type Date
* @private
*/
_lastTime : null,
/**
* Batched output timeout ID.
*
* @property _timeout
* @type Number
* @private
*/
_timeout : null,
/**
* Hash of filters and their related checkbox elements.
*
* @property _filterCheckboxes
* @type Object
* @private
*/
_filterCheckboxes : null,
/**
* Array of filters for log message categories.
*
* @property _categoryFilters
* @type String[]
* @private
*/
_categoryFilters : null,
/**
* Array of filters for log message sources.
*
* @property _sourceFilters
* @type String[]
* @private
*/
_sourceFilters : null,
/**
* LogReader container element.
*
* @property _elContainer
* @type HTMLElement
* @private
*/
_elContainer : null,
/**
* LogReader header element.
*
* @property _elHd
* @type HTMLElement
* @private
*/
_elHd : null,
/**
* LogReader collapse element.
*
* @property _elCollapse
* @type HTMLElement
* @private
*/
_elCollapse : null,
/**
* LogReader collapse button element.
*
* @property _btnCollapse
* @type HTMLElement
* @private
*/
_btnCollapse : null,
/**
* LogReader title header element.
*
* @property _title
* @type HTMLElement
* @private
*/
_title : null,
/**
* LogReader console element.
*
* @property _elConsole
* @type HTMLElement
* @private
*/
_elConsole : null,
/**
* LogReader footer element.
*
* @property _elFt
* @type HTMLElement
* @private
*/
_elFt : null,
/**
* LogReader buttons container element.
*
* @property _elBtns
* @type HTMLElement
* @private
*/
_elBtns : null,
/**
* Container element for LogReader category filter checkboxes.
*
* @property _elCategoryFilters
* @type HTMLElement
* @private
*/
_elCategoryFilters : null,
/**
* Container element for LogReader source filter checkboxes.
*
* @property _elSourceFilters
* @type HTMLElement
* @private
*/
_elSourceFilters : null,
/**
* LogReader pause button element.
*
* @property _btnPause
* @type HTMLElement
* @private
*/
_btnPause : null,
/**
* Clear button element.
*
* @property _btnClear
* @type HTMLElement
* @private
*/
_btnClear : null,
/////////////////////////////////////////////////////////////////////////////
//
// Private methods
//
/////////////////////////////////////////////////////////////////////////////
/**
* Initializes the primary container element.
*
* @method _initContainerEl
* @param elContainer {HTMLElement} Container element by reference or string ID.
* @private
*/
_initContainerEl : function(elContainer) {
// Validate container
elContainer = YAHOO.util.Dom.get(elContainer);
// Attach to existing container...
if(elContainer && elContainer.tagName && (elContainer.tagName.toLowerCase() == "div")) {
this._elContainer = elContainer;
YAHOO.util.Dom.addClass(this._elContainer,"yui-log");
}
// ...or create container from scratch
else {
this._elContainer = document.body.appendChild(document.createElement("div"));
//this._elContainer.id = "yui-log" + this._sName;
YAHOO.util.Dom.addClass(this._elContainer,"yui-log");
YAHOO.util.Dom.addClass(this._elContainer,"yui-log-container");
//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.right) {
containerStyle.right = this.right;
}
if(this.top) {
containerStyle.top = this.top;
}
if(this.left) {
containerStyle.left = this.left;
containerStyle.right = "auto";
}
if(this.bottom) {
containerStyle.bottom = this.bottom;
containerStyle.top = "auto";
}
if(this.fontSize) {
containerStyle.fontSize = this.fontSize;
}
// For Opera
if(navigator.userAgent.toLowerCase().indexOf("opera") != -1) {
document.body.style += '';
}
}
},
/**
* Initializes the header element.
*
* @method _initHeaderEl
* @private
*/
_initHeaderEl : function() {
var oSelf = this;
// Destroy header
if(this._elHd) {
// Unhook DOM events
YAHOO.util.Event.purgeElement(this._elHd, true);
// Remove DOM elements
this._elHd.innerHTML = "";
}
// Create header
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";
},
/**
* Initializes the console element.
*
* @method _initConsoleEl
* @private
*/
_initConsoleEl : function() {
// Destroy console
if(this._elConsole) {
// Unhook DOM events
YAHOO.util.Event.purgeElement(this._elConsole, true);
// Remove DOM elements
this._elConsole.innerHTML = "";
}
// Ceate console
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;
}
},
/**
* Initializes the footer element.
*
* @method _initFooterEl
* @private
*/
_initFooterEl : function() {
var oSelf = this;
// Don't create footer elements if footer is disabled
if(this.footerEnabled) {
// Destroy console
if(this._elFt) {
// Unhook DOM events
YAHOO.util.Event.purgeElement(this._elFt, true);
// Remove DOM elements
this._elFt.innerHTML = "";
}
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";
}
},
/**
* Initializes Drag and Drop on the header element.
*
* @method _initDragDrop
* @private
*/
_initDragDrop : function() {
// If Drag and Drop utility is available...
// ...and draggable is true...
// ...then make the header draggable
if(YAHOO.util.DD && this.draggable && this._elHd) {
var ylog_dd = new YAHOO.util.DD(this._elContainer);
ylog_dd.setHandleElId(this._elHd.id);
//TODO: use class name
this._elHd.style.cursor = "move";
}
},
/**
* Initializes category filters.
*
* @method _initCategories
* @private
*/
_initCategories : function() {
// Initialize category filters
this._categoryFilters = [];
var aInitialCategories = YAHOO.widget.Logger.categories;
for(var j=0; j < aInitialCategories.length; j++) {
var sCategory = aInitialCategories[j];
// Add category to the internal array of filters
this._categoryFilters.push(sCategory);
// Add checkbox element if UI is enabled
if(this._elCategoryFilters) {
this._createCategoryCheckbox(sCategory);
}
}
},
/**
* Initializes source filters.
*
* @method _initSources
* @private
*/
_initSources : function() {
// Initialize source filters
this._sourceFilters = [];
var aInitialSources = YAHOO.widget.Logger.sources;
for(var j=0; j < aInitialSources.length; j++) {
var sSource = aInitialSources[j];
// Add source to the internal array of filters
this._sourceFilters.push(sSource);
// Add checkbox element if UI is enabled
if(this._elSourceFilters) {
this._createSourceCheckbox(sSource);
}
}
},
/**
* Creates the UI for a category filter in the LogReader footer element.
*
* @method _createCategoryCheckbox
* @param sCategory {String} Category name.
* @private
*/
_createCategoryCheckbox : function(sCategory) {
var oSelf = this;
if(this._elFt) {
var elParent = this._elCategoryFilters;
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;
// 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;
this._filterCheckboxes[sCategory] = chkCategory;
}
},
/**
* Creates a checkbox in the LogReader footer element to filter by source.
*
* @method _createSourceCheckbox
* @param sSource {String} Source name.
* @private
*/
_createSourceCheckbox : function(sSource) {
var oSelf = this;
if(this._elFt) {
var elParent = this._elSourceFilters;
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;
// 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;
this._filterCheckboxes[sSource] = chkSource;
}
},
/**
* Reprints all log messages in the stack through filters.
*
* @method _filterLogs
* @private
*/
_filterLogs : function() {
// Reprint stack with new filters
if (this._elConsole !== null) {
this.clearConsole();
this._printToConsole(YAHOO.widget.Logger.getStack());
}
},
/**
* Sends buffer of log messages to output and clears buffer.
*
* @method _printBuffer
* @private
*/
_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._buffer.length; i++) {
entries[i] = this._buffer[i];
}
this._buffer = [];
this._printToConsole(entries);
}
else {
this._filterLogs();
}
if(!this.newestOnTop) {
this._elConsole.scrollTop = this._elConsole.scrollHeight;
}
}
},
/**
* Cycles through an array of log messages, and outputs each one to the console
* if its category has not been filtered out.
*
* @method _printToConsole
* @param aEntries {Object[]} Array of LogMsg objects to output to console.
* @private
*/
_printToConsole : function(aEntries) {
// Manage the number of messages displayed in the console
var entriesLen = aEntries.length,
df = document.createDocumentFragment(),
msgHTML = [],
thresholdMin = this.thresholdMin,
sourceFiltersLen = this._sourceFilters.length,
categoryFiltersLen = this._categoryFilters.length,
entriesStartIndex,
i, j, msg, before;
if(isNaN(thresholdMin) || (thresholdMin > this.thresholdMax)) {
thresholdMin = 0;
}
entriesStartIndex = (entriesLen > thresholdMin) ? (entriesLen - thresholdMin) : 0;
// Iterate through all log entries
for(i=entriesStartIndex; i<entriesLen; i++) {
// Print only the ones that filter through
var okToPrint = false;
var okToFilterCats = false;
// Get log message details
var entry = aEntries[i];
var source = entry.source;
var category = entry.category;
for(j=0; j<sourceFiltersLen; j++) {
if(source == this._sourceFilters[j]) {
okToFilterCats = true;
break;
}
}
if(okToFilterCats) {
for(j=0; j<categoryFiltersLen; j++) {
if(category == this._categoryFilters[j]) {
okToPrint = true;
break;
}
}
}
if(okToPrint) {
msg = this.formatMsg(entry);
if (typeof msg === 'string') {
msgHTML[msgHTML.length] = msg;
} else {
df.insertBefore(msg, this.newestOnTop ?
df.firstChild || null : null);
}
this._consoleMsgCount++;
this._lastTime = entry.time.getTime();
}
}
if (msgHTML.length) {
msgHTML.splice(0,0,this._elConsole.innerHTML);
this._elConsole.innerHTML = this.newestOnTop ?
msgHTML.reverse().join('') :
msgHTML.join('');
} else if (df.firstChild) {
this._elConsole.insertBefore(df, this.newestOnTop ?
this._elConsole.firstChild || null : null);
}
},
/////////////////////////////////////////////////////////////////////////////
//
// 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
*/
_onCategoryCreate : function(sType, aArgs, oSelf) {
var category = aArgs[0];
// Add category to the internal array of filters
oSelf._categoryFilters.push(category);
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
*/
_onSourceCreate : function(sType, aArgs, oSelf) {
var source = aArgs[0];
// Add source to the internal array of filters
oSelf._sourceFilters.push(source);
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
*/
_onCheckCategory : function(v, oSelf) {
var category = this.category;
if(!this.checked) {
oSelf.hideCategory(category);
}
else {
oSelf.showCategory(category);
}
},
/**
* Handles check events on the category filter checkboxes.
*
* @method _onCheckSource
* @param v {HTMLEvent} The click event.
* @param oSelf {Object} The LogReader instance.
* @private
*/
_onCheckSource : function(v, oSelf) {
var source = this.source;
if(!this.checked) {
oSelf.hideSource(source);
}
else {
oSelf.showSource(source);
}
},
/**
* Handles click events on the collapse button.
*
* @method _onClickCollapseBtn
* @param v {HTMLEvent} The click event.
* @param oSelf {Object} The LogReader instance
* @private
*/
_onClickCollapseBtn : function(v, oSelf) {
if(!oSelf.isCollapsed) {
oSelf.collapse();
}
else {
oSelf.expand();
}
},
/**
* Handles click events on the pause button.
*
* @method _onClickPauseBtn
* @param v {HTMLEvent} The click event.
* @param oSelf {Object} The LogReader instance.
* @private
*/
_onClickPauseBtn : function(v, oSelf) {
if(!oSelf.isPaused) {
oSelf.pause();
}
else {
oSelf.resume();
}
},
/**
* Handles click events on the clear button.
*
* @method _onClickClearBtn
* @param v {HTMLEvent} The click event.
* @param oSelf {Object} The LogReader instance.
* @private
*/
_onClickClearBtn : function(v, oSelf) {
oSelf.clearConsole();
},
/**
* Handles Logger's newLogEvent.
*
* @method _onNewLog
* @param sType {String} The event.
* @param aArgs {Object[]} Data passed from event firer.
* @param oSelf {Object} The LogReader instance.
* @private
*/
_onNewLog : function(sType, aArgs, oSelf) {
var logEntry = aArgs[0];
oSelf._buffer.push(logEntry);
if (oSelf.logReaderEnabled === true && oSelf._timeout === null) {
oSelf._timeout = setTimeout(function(){oSelf._printBuffer();}, oSelf.outputBuffer);
}
},
/**
* Handles Logger's resetEvent.
*
* @method _onReset
* @param sType {String} The event.
* @param aArgs {Object[]} Data passed from event firer.
* @param oSelf {Object} The LogReader instance.
* @private
*/
_onReset : function(sType, aArgs, oSelf) {
oSelf._filterLogs();
}
};