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2011-02-16 16:09:48 +01:00

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<title>API: logger Logger.js (YUI Library)</title>
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<h1><a href="http://developer.yahoo.com/yui/" title="Yahoo! UI Library">Yahoo! UI Library</a></h1>
<h3>Logger Widget&nbsp; <span class="subtitle">2.8.2r1</span></h3>
<a href="./index.html" title="Yahoo! UI Library">Yahoo! UI Library</a>
&gt; <a href="./module_logger.html" title="logger">logger</a>
&gt; Logger.js (source view)
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<div class="highlight"><pre> <span class="cm">/**</span>
<span class="cm"> * The Logger widget provides a simple way to read or write log messages in</span>
<span class="cm"> * JavaScript code. Integration with the YUI Library&#39;s debug builds allow</span>
<span class="cm"> * implementers to access under-the-hood events, errors, and debugging messages.</span>
<span class="cm"> * Output may be read through a LogReader console and/or output to a browser</span>
<span class="cm"> * console.</span>
<span class="cm"> *</span>
<span class="cm"> * @module logger</span>
<span class="cm"> * @requires yahoo, event, dom</span>
<span class="cm"> * @optional dragdrop</span>
<span class="cm"> * @namespace YAHOO.widget</span>
<span class="cm"> * @title Logger Widget</span>
<span class="cm"> */</span>
<span class="cm">/****************************************************************************/</span>
<span class="cm">/****************************************************************************/</span>
<span class="cm">/****************************************************************************/</span>
<span class="c1">// Define once</span>
<span class="k">if</span><span class="p">(</span><span class="o">!</span><span class="nx">YAHOO</span><span class="p">.</span><span class="nx">widget</span><span class="p">.</span><span class="nx">Logger</span><span class="p">)</span> <span class="p">{</span>
<span class="cm">/**</span>
<span class="cm"> * The singleton Logger class provides core log management functionality. Saves</span>
<span class="cm"> * logs written through the global YAHOO.log function or written by a LogWriter</span>
<span class="cm"> * instance. Provides access to logs for reading by a LogReader instance or</span>
<span class="cm"> * native browser console such as the Firebug extension to Firefox or Safari&#39;s</span>
<span class="cm"> * JavaScript console through integration with the console.log() method.</span>
<span class="cm"> *</span>
<span class="cm"> * @class Logger</span>
<span class="cm"> * @static</span>
<span class="cm"> */</span>
<span class="nx">YAHOO</span><span class="p">.</span><span class="nx">widget</span><span class="p">.</span><span class="nx">Logger</span> <span class="o">=</span> <span class="p">{</span>
<span class="c1">// Initialize properties</span>
<span class="nx">loggerEnabled</span><span class="o">:</span> <span class="kc">true</span><span class="p">,</span>
<span class="nx">_browserConsoleEnabled</span><span class="o">:</span> <span class="kc">false</span><span class="p">,</span>
<span class="nx">categories</span><span class="o">:</span> <span class="p">[</span><span class="s2">&quot;info&quot;</span><span class="p">,</span><span class="s2">&quot;warn&quot;</span><span class="p">,</span><span class="s2">&quot;error&quot;</span><span class="p">,</span><span class="s2">&quot;time&quot;</span><span class="p">,</span><span class="s2">&quot;window&quot;</span><span class="p">],</span>
<span class="nx">sources</span><span class="o">:</span> <span class="p">[</span><span class="s2">&quot;global&quot;</span><span class="p">],</span>
<span class="nx">_stack</span><span class="o">:</span> <span class="p">[],</span> <span class="c1">// holds all log msgs</span>
<span class="nx">maxStackEntries</span><span class="o">:</span> <span class="mi">2500</span><span class="p">,</span>
<span class="nx">_startTime</span><span class="o">:</span> <span class="k">new</span> <span class="nb">Date</span><span class="p">().</span><span class="nx">getTime</span><span class="p">(),</span> <span class="c1">// static start timestamp</span>
<span class="nx">_lastTime</span><span class="o">:</span> <span class="kc">null</span><span class="p">,</span> <span class="c1">// timestamp of last logged message</span>
<span class="nx">_windowErrorsHandled</span><span class="o">:</span> <span class="kc">false</span><span class="p">,</span>
<span class="nx">_origOnWindowError</span><span class="o">:</span> <span class="kc">null</span>
<span class="p">};</span>
<span class="c1">/////////////////////////////////////////////////////////////////////////////</span>
<span class="c1">//</span>
<span class="c1">// Public properties</span>
<span class="c1">//</span>
<span class="c1">/////////////////////////////////////////////////////////////////////////////</span>
<span class="cm">/**</span>
<span class="cm"> * True if Logger is enabled, false otherwise.</span>
<span class="cm"> *</span>
<span class="cm"> * @property loggerEnabled</span>
<span class="cm"> * @type Boolean</span>
<span class="cm"> * @static</span>
<span class="cm"> * @default true</span>
<span class="cm"> */</span>
<span class="cm">/**</span>
<span class="cm"> * Array of categories.</span>
<span class="cm"> *</span>
<span class="cm"> * @property categories</span>
<span class="cm"> * @type String[]</span>
<span class="cm"> * @static</span>
<span class="cm"> * @default [&quot;info&quot;,&quot;warn&quot;,&quot;error&quot;,&quot;time&quot;,&quot;window&quot;]</span>
<span class="cm"> */</span>
<span class="cm">/**</span>
<span class="cm"> * Array of sources.</span>
<span class="cm"> *</span>
<span class="cm"> * @property sources</span>
<span class="cm"> * @type String[]</span>
<span class="cm"> * @static</span>
<span class="cm"> * @default [&quot;global&quot;]</span>
<span class="cm"> */</span>
<span class="cm">/**</span>
<span class="cm"> * Upper limit on size of internal stack.</span>
<span class="cm"> *</span>
<span class="cm"> * @property maxStackEntries</span>
<span class="cm"> * @type Number</span>
<span class="cm"> * @static</span>
<span class="cm"> * @default 2500</span>
<span class="cm"> */</span>
<span class="c1">/////////////////////////////////////////////////////////////////////////////</span>
<span class="c1">//</span>
<span class="c1">// Private properties</span>
<span class="c1">//</span>
<span class="c1">/////////////////////////////////////////////////////////////////////////////</span>
<span class="cm">/**</span>
<span class="cm"> * Internal property to track whether output to browser console is enabled.</span>
<span class="cm"> *</span>
<span class="cm"> * @property _browserConsoleEnabled</span>
<span class="cm"> * @type Boolean</span>
<span class="cm"> * @static</span>
<span class="cm"> * @default false</span>
<span class="cm"> * @private</span>
<span class="cm"> */</span>
<span class="cm">/**</span>
<span class="cm"> * Array to hold all log messages.</span>
<span class="cm"> *</span>
<span class="cm"> * @property _stack</span>
<span class="cm"> * @type Array</span>
<span class="cm"> * @static</span>
<span class="cm"> * @private</span>
<span class="cm"> */</span>
<span class="cm">/**</span>
<span class="cm"> * Static timestamp of Logger initialization.</span>
<span class="cm"> *</span>
<span class="cm"> * @property _startTime</span>
<span class="cm"> * @type Date</span>
<span class="cm"> * @static</span>
<span class="cm"> * @private</span>
<span class="cm"> */</span>
<span class="cm">/**</span>
<span class="cm"> * Timestamp of last logged message.</span>
<span class="cm"> *</span>
<span class="cm"> * @property _lastTime</span>
<span class="cm"> * @type Date</span>
<span class="cm"> * @static</span>
<span class="cm"> * @private</span>
<span class="cm"> */</span>
<span class="c1">/////////////////////////////////////////////////////////////////////////////</span>
<span class="c1">//</span>
<span class="c1">// Public methods</span>
<span class="c1">//</span>
<span class="c1">/////////////////////////////////////////////////////////////////////////////</span>
<span class="cm">/**</span>
<span class="cm"> * Saves a log message to the stack and fires newLogEvent. If the log message is</span>
<span class="cm"> * assigned to an unknown category, creates a new category. If the log message is</span>
<span class="cm"> * from an unknown source, creates a new source. If browser console is enabled,</span>
<span class="cm"> * outputs the log message to browser console.</span>
<span class="cm"> *</span>
<span class="cm"> * @method log</span>
<span class="cm"> * @param sMsg {String} The log message.</span>
<span class="cm"> * @param sCategory {String} Category of log message, or null.</span>
<span class="cm"> * @param sSource {String} Source of LogWriter, or null if global.</span>
<span class="cm"> */</span>
<span class="nx">YAHOO</span><span class="p">.</span><span class="nx">widget</span><span class="p">.</span><span class="nx">Logger</span><span class="p">.</span><span class="nx">log</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">sMsg</span><span class="p">,</span> <span class="nx">sCategory</span><span class="p">,</span> <span class="nx">sSource</span><span class="p">)</span> <span class="p">{</span>
<span class="k">if</span><span class="p">(</span><span class="k">this</span><span class="p">.</span><span class="nx">loggerEnabled</span><span class="p">)</span> <span class="p">{</span>
<span class="k">if</span><span class="p">(</span><span class="o">!</span><span class="nx">sCategory</span><span class="p">)</span> <span class="p">{</span>
<span class="nx">sCategory</span> <span class="o">=</span> <span class="s2">&quot;info&quot;</span><span class="p">;</span> <span class="c1">// default category</span>
<span class="p">}</span>
<span class="k">else</span> <span class="p">{</span>
<span class="nx">sCategory</span> <span class="o">=</span> <span class="nx">sCategory</span><span class="p">.</span><span class="nx">toLocaleLowerCase</span><span class="p">();</span>
<span class="k">if</span><span class="p">(</span><span class="k">this</span><span class="p">.</span><span class="nx">_isNewCategory</span><span class="p">(</span><span class="nx">sCategory</span><span class="p">))</span> <span class="p">{</span>
<span class="k">this</span><span class="p">.</span><span class="nx">_createNewCategory</span><span class="p">(</span><span class="nx">sCategory</span><span class="p">);</span>
<span class="p">}</span>
<span class="p">}</span>
<span class="kd">var</span> <span class="nx">sClass</span> <span class="o">=</span> <span class="s2">&quot;global&quot;</span><span class="p">;</span> <span class="c1">// default source</span>
<span class="kd">var</span> <span class="nx">sDetail</span> <span class="o">=</span> <span class="kc">null</span><span class="p">;</span>
<span class="k">if</span><span class="p">(</span><span class="nx">sSource</span><span class="p">)</span> <span class="p">{</span>
<span class="kd">var</span> <span class="nx">spaceIndex</span> <span class="o">=</span> <span class="nx">sSource</span><span class="p">.</span><span class="nx">indexOf</span><span class="p">(</span><span class="s2">&quot; &quot;</span><span class="p">);</span>
<span class="k">if</span><span class="p">(</span><span class="nx">spaceIndex</span> <span class="o">&gt;</span> <span class="mi">0</span><span class="p">)</span> <span class="p">{</span>
<span class="c1">// Substring until first space</span>
<span class="nx">sClass</span> <span class="o">=</span> <span class="nx">sSource</span><span class="p">.</span><span class="nx">substring</span><span class="p">(</span><span class="mi">0</span><span class="p">,</span><span class="nx">spaceIndex</span><span class="p">);</span>
<span class="c1">// The rest of the source</span>
<span class="nx">sDetail</span> <span class="o">=</span> <span class="nx">sSource</span><span class="p">.</span><span class="nx">substring</span><span class="p">(</span><span class="nx">spaceIndex</span><span class="p">,</span><span class="nx">sSource</span><span class="p">.</span><span class="nx">length</span><span class="p">);</span>
<span class="p">}</span>
<span class="k">else</span> <span class="p">{</span>
<span class="nx">sClass</span> <span class="o">=</span> <span class="nx">sSource</span><span class="p">;</span>
<span class="p">}</span>
<span class="k">if</span><span class="p">(</span><span class="k">this</span><span class="p">.</span><span class="nx">_isNewSource</span><span class="p">(</span><span class="nx">sClass</span><span class="p">))</span> <span class="p">{</span>
<span class="k">this</span><span class="p">.</span><span class="nx">_createNewSource</span><span class="p">(</span><span class="nx">sClass</span><span class="p">);</span>
<span class="p">}</span>
<span class="p">}</span>
<span class="kd">var</span> <span class="nx">timestamp</span> <span class="o">=</span> <span class="k">new</span> <span class="nb">Date</span><span class="p">();</span>
<span class="kd">var</span> <span class="nx">logEntry</span> <span class="o">=</span> <span class="k">new</span> <span class="nx">YAHOO</span><span class="p">.</span><span class="nx">widget</span><span class="p">.</span><span class="nx">LogMsg</span><span class="p">({</span>
<span class="nx">msg</span><span class="o">:</span> <span class="nx">sMsg</span><span class="p">,</span>
<span class="nx">time</span><span class="o">:</span> <span class="nx">timestamp</span><span class="p">,</span>
<span class="nx">category</span><span class="o">:</span> <span class="nx">sCategory</span><span class="p">,</span>
<span class="nx">source</span><span class="o">:</span> <span class="nx">sClass</span><span class="p">,</span>
<span class="nx">sourceDetail</span><span class="o">:</span> <span class="nx">sDetail</span>
<span class="p">});</span>
<span class="kd">var</span> <span class="nx">stack</span> <span class="o">=</span> <span class="k">this</span><span class="p">.</span><span class="nx">_stack</span><span class="p">;</span>
<span class="kd">var</span> <span class="nx">maxStackEntries</span> <span class="o">=</span> <span class="k">this</span><span class="p">.</span><span class="nx">maxStackEntries</span><span class="p">;</span>
<span class="k">if</span><span class="p">(</span><span class="nx">maxStackEntries</span> <span class="o">&amp;&amp;</span> <span class="o">!</span><span class="nb">isNaN</span><span class="p">(</span><span class="nx">maxStackEntries</span><span class="p">)</span> <span class="o">&amp;&amp;</span>
<span class="p">(</span><span class="nx">stack</span><span class="p">.</span><span class="nx">length</span> <span class="o">&gt;=</span> <span class="nx">maxStackEntries</span><span class="p">))</span> <span class="p">{</span>
<span class="nx">stack</span><span class="p">.</span><span class="nx">shift</span><span class="p">();</span>
<span class="p">}</span>
<span class="nx">stack</span><span class="p">.</span><span class="nx">push</span><span class="p">(</span><span class="nx">logEntry</span><span class="p">);</span>
<span class="k">this</span><span class="p">.</span><span class="nx">newLogEvent</span><span class="p">.</span><span class="nx">fire</span><span class="p">(</span><span class="nx">logEntry</span><span class="p">);</span>
<span class="k">if</span><span class="p">(</span><span class="k">this</span><span class="p">.</span><span class="nx">_browserConsoleEnabled</span><span class="p">)</span> <span class="p">{</span>
<span class="k">this</span><span class="p">.</span><span class="nx">_printToBrowserConsole</span><span class="p">(</span><span class="nx">logEntry</span><span class="p">);</span>
<span class="p">}</span>
<span class="k">return</span> <span class="kc">true</span><span class="p">;</span>
<span class="p">}</span>
<span class="k">else</span> <span class="p">{</span>
<span class="k">return</span> <span class="kc">false</span><span class="p">;</span>
<span class="p">}</span>
<span class="p">};</span>
<span class="cm">/**</span>
<span class="cm"> * Resets internal stack and startTime, enables Logger, and fires logResetEvent.</span>
<span class="cm"> *</span>
<span class="cm"> * @method reset</span>
<span class="cm"> */</span>
<span class="nx">YAHOO</span><span class="p">.</span><span class="nx">widget</span><span class="p">.</span><span class="nx">Logger</span><span class="p">.</span><span class="nx">reset</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
<span class="k">this</span><span class="p">.</span><span class="nx">_stack</span> <span class="o">=</span> <span class="p">[];</span>
<span class="k">this</span><span class="p">.</span><span class="nx">_startTime</span> <span class="o">=</span> <span class="k">new</span> <span class="nb">Date</span><span class="p">().</span><span class="nx">getTime</span><span class="p">();</span>
<span class="k">this</span><span class="p">.</span><span class="nx">loggerEnabled</span> <span class="o">=</span> <span class="kc">true</span><span class="p">;</span>
<span class="k">this</span><span class="p">.</span><span class="nx">log</span><span class="p">(</span><span class="s2">&quot;Logger reset&quot;</span><span class="p">);</span>
<span class="k">this</span><span class="p">.</span><span class="nx">logResetEvent</span><span class="p">.</span><span class="nx">fire</span><span class="p">();</span>
<span class="p">};</span>
<span class="cm">/**</span>
<span class="cm"> * Public accessor to internal stack of log message objects.</span>
<span class="cm"> *</span>
<span class="cm"> * @method getStack</span>
<span class="cm"> * @return {Object[]} Array of log message objects.</span>
<span class="cm"> */</span>
<span class="nx">YAHOO</span><span class="p">.</span><span class="nx">widget</span><span class="p">.</span><span class="nx">Logger</span><span class="p">.</span><span class="nx">getStack</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
<span class="k">return</span> <span class="k">this</span><span class="p">.</span><span class="nx">_stack</span><span class="p">;</span>
<span class="p">};</span>
<span class="cm">/**</span>
<span class="cm"> * Public accessor to internal start time.</span>
<span class="cm"> *</span>
<span class="cm"> * @method getStartTime</span>
<span class="cm"> * @return {Date} Internal date of when Logger singleton was initialized.</span>
<span class="cm"> */</span>
<span class="nx">YAHOO</span><span class="p">.</span><span class="nx">widget</span><span class="p">.</span><span class="nx">Logger</span><span class="p">.</span><span class="nx">getStartTime</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
<span class="k">return</span> <span class="k">this</span><span class="p">.</span><span class="nx">_startTime</span><span class="p">;</span>
<span class="p">};</span>
<span class="cm">/**</span>
<span class="cm"> * Disables output to the browser&#39;s global console.log() function, which is used</span>
<span class="cm"> * by the Firebug extension to Firefox as well as Safari.</span>
<span class="cm"> *</span>
<span class="cm"> * @method disableBrowserConsole</span>
<span class="cm"> */</span>
<span class="nx">YAHOO</span><span class="p">.</span><span class="nx">widget</span><span class="p">.</span><span class="nx">Logger</span><span class="p">.</span><span class="nx">disableBrowserConsole</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
<span class="nx">YAHOO</span><span class="p">.</span><span class="nx">log</span><span class="p">(</span><span class="s2">&quot;Logger output to the function console.log() has been disabled.&quot;</span><span class="p">);</span>
<span class="k">this</span><span class="p">.</span><span class="nx">_browserConsoleEnabled</span> <span class="o">=</span> <span class="kc">false</span><span class="p">;</span>
<span class="p">};</span>
<span class="cm">/**</span>
<span class="cm"> * Enables output to the browser&#39;s global console.log() function, which is used</span>
<span class="cm"> * by the Firebug extension to Firefox as well as Safari.</span>
<span class="cm"> *</span>
<span class="cm"> * @method enableBrowserConsole</span>
<span class="cm"> */</span>
<span class="nx">YAHOO</span><span class="p">.</span><span class="nx">widget</span><span class="p">.</span><span class="nx">Logger</span><span class="p">.</span><span class="nx">enableBrowserConsole</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
<span class="k">this</span><span class="p">.</span><span class="nx">_browserConsoleEnabled</span> <span class="o">=</span> <span class="kc">true</span><span class="p">;</span>
<span class="nx">YAHOO</span><span class="p">.</span><span class="nx">log</span><span class="p">(</span><span class="s2">&quot;Logger output to the function console.log() has been enabled.&quot;</span><span class="p">);</span>
<span class="p">};</span>
<span class="cm">/**</span>
<span class="cm"> * Surpresses native JavaScript errors and outputs to console. By default,</span>
<span class="cm"> * Logger does not handle JavaScript window error events.</span>
<span class="cm"> * NB: Not all browsers support the window.onerror event.</span>
<span class="cm"> *</span>
<span class="cm"> * @method handleWindowErrors</span>
<span class="cm"> */</span>
<span class="nx">YAHOO</span><span class="p">.</span><span class="nx">widget</span><span class="p">.</span><span class="nx">Logger</span><span class="p">.</span><span class="nx">handleWindowErrors</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
<span class="k">if</span><span class="p">(</span><span class="o">!</span><span class="nx">YAHOO</span><span class="p">.</span><span class="nx">widget</span><span class="p">.</span><span class="nx">Logger</span><span class="p">.</span><span class="nx">_windowErrorsHandled</span><span class="p">)</span> <span class="p">{</span>
<span class="c1">// Save any previously defined handler to call</span>
<span class="k">if</span><span class="p">(</span><span class="nb">window</span><span class="p">.</span><span class="nx">error</span><span class="p">)</span> <span class="p">{</span>
<span class="nx">YAHOO</span><span class="p">.</span><span class="nx">widget</span><span class="p">.</span><span class="nx">Logger</span><span class="p">.</span><span class="nx">_origOnWindowError</span> <span class="o">=</span> <span class="nb">window</span><span class="p">.</span><span class="nx">onerror</span><span class="p">;</span>
<span class="p">}</span>
<span class="nb">window</span><span class="p">.</span><span class="nx">onerror</span> <span class="o">=</span> <span class="nx">YAHOO</span><span class="p">.</span><span class="nx">widget</span><span class="p">.</span><span class="nx">Logger</span><span class="p">.</span><span class="nx">_onWindowError</span><span class="p">;</span>
<span class="nx">YAHOO</span><span class="p">.</span><span class="nx">widget</span><span class="p">.</span><span class="nx">Logger</span><span class="p">.</span><span class="nx">_windowErrorsHandled</span> <span class="o">=</span> <span class="kc">true</span><span class="p">;</span>
<span class="nx">YAHOO</span><span class="p">.</span><span class="nx">log</span><span class="p">(</span><span class="s2">&quot;Logger handling of window.onerror has been enabled.&quot;</span><span class="p">);</span>
<span class="p">}</span>
<span class="k">else</span> <span class="p">{</span>
<span class="nx">YAHOO</span><span class="p">.</span><span class="nx">log</span><span class="p">(</span><span class="s2">&quot;Logger handling of window.onerror had already been enabled.&quot;</span><span class="p">);</span>
<span class="p">}</span>
<span class="p">};</span>
<span class="cm">/**</span>
<span class="cm"> * Unsurpresses native JavaScript errors. By default,</span>
<span class="cm"> * Logger does not handle JavaScript window error events.</span>
<span class="cm"> * NB: Not all browsers support the window.onerror event.</span>
<span class="cm"> *</span>
<span class="cm"> * @method unhandleWindowErrors</span>
<span class="cm"> */</span>
<span class="nx">YAHOO</span><span class="p">.</span><span class="nx">widget</span><span class="p">.</span><span class="nx">Logger</span><span class="p">.</span><span class="nx">unhandleWindowErrors</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
<span class="k">if</span><span class="p">(</span><span class="nx">YAHOO</span><span class="p">.</span><span class="nx">widget</span><span class="p">.</span><span class="nx">Logger</span><span class="p">.</span><span class="nx">_windowErrorsHandled</span><span class="p">)</span> <span class="p">{</span>
<span class="c1">// Revert to any previously defined handler to call</span>
<span class="k">if</span><span class="p">(</span><span class="nx">YAHOO</span><span class="p">.</span><span class="nx">widget</span><span class="p">.</span><span class="nx">Logger</span><span class="p">.</span><span class="nx">_origOnWindowError</span><span class="p">)</span> <span class="p">{</span>
<span class="nb">window</span><span class="p">.</span><span class="nx">onerror</span> <span class="o">=</span> <span class="nx">YAHOO</span><span class="p">.</span><span class="nx">widget</span><span class="p">.</span><span class="nx">Logger</span><span class="p">.</span><span class="nx">_origOnWindowError</span><span class="p">;</span>
<span class="nx">YAHOO</span><span class="p">.</span><span class="nx">widget</span><span class="p">.</span><span class="nx">Logger</span><span class="p">.</span><span class="nx">_origOnWindowError</span> <span class="o">=</span> <span class="kc">null</span><span class="p">;</span>
<span class="p">}</span>
<span class="k">else</span> <span class="p">{</span>
<span class="nb">window</span><span class="p">.</span><span class="nx">onerror</span> <span class="o">=</span> <span class="kc">null</span><span class="p">;</span>
<span class="p">}</span>
<span class="nx">YAHOO</span><span class="p">.</span><span class="nx">widget</span><span class="p">.</span><span class="nx">Logger</span><span class="p">.</span><span class="nx">_windowErrorsHandled</span> <span class="o">=</span> <span class="kc">false</span><span class="p">;</span>
<span class="nx">YAHOO</span><span class="p">.</span><span class="nx">log</span><span class="p">(</span><span class="s2">&quot;Logger handling of window.onerror has been disabled.&quot;</span><span class="p">);</span>
<span class="p">}</span>
<span class="k">else</span> <span class="p">{</span>
<span class="nx">YAHOO</span><span class="p">.</span><span class="nx">log</span><span class="p">(</span><span class="s2">&quot;Logger handling of window.onerror had already been disabled.&quot;</span><span class="p">);</span>
<span class="p">}</span>
<span class="p">};</span>
<span class="c1">/////////////////////////////////////////////////////////////////////////////</span>
<span class="c1">//</span>
<span class="c1">// Public events</span>
<span class="c1">//</span>
<span class="c1">/////////////////////////////////////////////////////////////////////////////</span>
<span class="cm">/**</span>
<span class="cm"> * Fired when a new category has been created.</span>
<span class="cm"> *</span>
<span class="cm"> * @event categoryCreateEvent</span>
<span class="cm"> * @param sCategory {String} Category name.</span>
<span class="cm"> */</span>
<span class="nx">YAHOO</span><span class="p">.</span><span class="nx">widget</span><span class="p">.</span><span class="nx">Logger</span><span class="p">.</span><span class="nx">categoryCreateEvent</span> <span class="o">=</span>
<span class="k">new</span> <span class="nx">YAHOO</span><span class="p">.</span><span class="nx">util</span><span class="p">.</span><span class="nx">CustomEvent</span><span class="p">(</span><span class="s2">&quot;categoryCreate&quot;</span><span class="p">,</span> <span class="k">this</span><span class="p">,</span> <span class="kc">true</span><span class="p">);</span>
<span class="cm">/**</span>
<span class="cm"> * Fired when a new source has been named.</span>
<span class="cm"> *</span>
<span class="cm"> * @event sourceCreateEvent</span>
<span class="cm"> * @param sSource {String} Source name.</span>
<span class="cm"> */</span>
<span class="nx">YAHOO</span><span class="p">.</span><span class="nx">widget</span><span class="p">.</span><span class="nx">Logger</span><span class="p">.</span><span class="nx">sourceCreateEvent</span> <span class="o">=</span>
<span class="k">new</span> <span class="nx">YAHOO</span><span class="p">.</span><span class="nx">util</span><span class="p">.</span><span class="nx">CustomEvent</span><span class="p">(</span><span class="s2">&quot;sourceCreate&quot;</span><span class="p">,</span> <span class="k">this</span><span class="p">,</span> <span class="kc">true</span><span class="p">);</span>
<span class="cm">/**</span>
<span class="cm"> * Fired when a new log message has been created.</span>
<span class="cm"> *</span>
<span class="cm"> * @event newLogEvent</span>
<span class="cm"> * @param sMsg {String} Log message.</span>
<span class="cm"> */</span>
<span class="nx">YAHOO</span><span class="p">.</span><span class="nx">widget</span><span class="p">.</span><span class="nx">Logger</span><span class="p">.</span><span class="nx">newLogEvent</span> <span class="o">=</span> <span class="k">new</span> <span class="nx">YAHOO</span><span class="p">.</span><span class="nx">util</span><span class="p">.</span><span class="nx">CustomEvent</span><span class="p">(</span><span class="s2">&quot;newLog&quot;</span><span class="p">,</span> <span class="k">this</span><span class="p">,</span> <span class="kc">true</span><span class="p">);</span>
<span class="cm">/**</span>
<span class="cm"> * Fired when the Logger has been reset has been created.</span>
<span class="cm"> *</span>
<span class="cm"> * @event logResetEvent</span>
<span class="cm"> */</span>
<span class="nx">YAHOO</span><span class="p">.</span><span class="nx">widget</span><span class="p">.</span><span class="nx">Logger</span><span class="p">.</span><span class="nx">logResetEvent</span> <span class="o">=</span> <span class="k">new</span> <span class="nx">YAHOO</span><span class="p">.</span><span class="nx">util</span><span class="p">.</span><span class="nx">CustomEvent</span><span class="p">(</span><span class="s2">&quot;logReset&quot;</span><span class="p">,</span> <span class="k">this</span><span class="p">,</span> <span class="kc">true</span><span class="p">);</span>
<span class="c1">/////////////////////////////////////////////////////////////////////////////</span>
<span class="c1">//</span>
<span class="c1">// Private methods</span>
<span class="c1">//</span>
<span class="c1">/////////////////////////////////////////////////////////////////////////////</span>
<span class="cm">/**</span>
<span class="cm"> * Creates a new category of log messages and fires categoryCreateEvent.</span>
<span class="cm"> *</span>
<span class="cm"> * @method _createNewCategory</span>
<span class="cm"> * @param sCategory {String} Category name.</span>
<span class="cm"> * @private</span>
<span class="cm"> */</span>
<span class="nx">YAHOO</span><span class="p">.</span><span class="nx">widget</span><span class="p">.</span><span class="nx">Logger</span><span class="p">.</span><span class="nx">_createNewCategory</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">sCategory</span><span class="p">)</span> <span class="p">{</span>
<span class="k">this</span><span class="p">.</span><span class="nx">categories</span><span class="p">.</span><span class="nx">push</span><span class="p">(</span><span class="nx">sCategory</span><span class="p">);</span>
<span class="k">this</span><span class="p">.</span><span class="nx">categoryCreateEvent</span><span class="p">.</span><span class="nx">fire</span><span class="p">(</span><span class="nx">sCategory</span><span class="p">);</span>
<span class="p">};</span>
<span class="cm">/**</span>
<span class="cm"> * Checks to see if a category has already been created.</span>
<span class="cm"> *</span>
<span class="cm"> * @method _isNewCategory</span>
<span class="cm"> * @param sCategory {String} Category name.</span>
<span class="cm"> * @return {Boolean} Returns true if category is unknown, else returns false.</span>
<span class="cm"> * @private</span>
<span class="cm"> */</span>
<span class="nx">YAHOO</span><span class="p">.</span><span class="nx">widget</span><span class="p">.</span><span class="nx">Logger</span><span class="p">.</span><span class="nx">_isNewCategory</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">sCategory</span><span class="p">)</span> <span class="p">{</span>
<span class="k">for</span><span class="p">(</span><span class="kd">var</span> <span class="nx">i</span><span class="o">=</span><span class="mi">0</span><span class="p">;</span> <span class="nx">i</span> <span class="o">&lt;</span> <span class="k">this</span><span class="p">.</span><span class="nx">categories</span><span class="p">.</span><span class="nx">length</span><span class="p">;</span> <span class="nx">i</span><span class="o">++</span><span class="p">)</span> <span class="p">{</span>
<span class="k">if</span><span class="p">(</span><span class="nx">sCategory</span> <span class="o">==</span> <span class="k">this</span><span class="p">.</span><span class="nx">categories</span><span class="p">[</span><span class="nx">i</span><span class="p">])</span> <span class="p">{</span>
<span class="k">return</span> <span class="kc">false</span><span class="p">;</span>
<span class="p">}</span>
<span class="p">}</span>
<span class="k">return</span> <span class="kc">true</span><span class="p">;</span>
<span class="p">};</span>
<span class="cm">/**</span>
<span class="cm"> * Creates a new source of log messages and fires sourceCreateEvent.</span>
<span class="cm"> *</span>
<span class="cm"> * @method _createNewSource</span>
<span class="cm"> * @param sSource {String} Source name.</span>
<span class="cm"> * @private</span>
<span class="cm"> */</span>
<span class="nx">YAHOO</span><span class="p">.</span><span class="nx">widget</span><span class="p">.</span><span class="nx">Logger</span><span class="p">.</span><span class="nx">_createNewSource</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">sSource</span><span class="p">)</span> <span class="p">{</span>
<span class="k">this</span><span class="p">.</span><span class="nx">sources</span><span class="p">.</span><span class="nx">push</span><span class="p">(</span><span class="nx">sSource</span><span class="p">);</span>
<span class="k">this</span><span class="p">.</span><span class="nx">sourceCreateEvent</span><span class="p">.</span><span class="nx">fire</span><span class="p">(</span><span class="nx">sSource</span><span class="p">);</span>
<span class="p">};</span>
<span class="cm">/**</span>
<span class="cm"> * Checks to see if a source already exists.</span>
<span class="cm"> *</span>
<span class="cm"> * @method _isNewSource</span>
<span class="cm"> * @param sSource {String} Source name.</span>
<span class="cm"> * @return {Boolean} Returns true if source is unknown, else returns false.</span>
<span class="cm"> * @private</span>
<span class="cm"> */</span>
<span class="nx">YAHOO</span><span class="p">.</span><span class="nx">widget</span><span class="p">.</span><span class="nx">Logger</span><span class="p">.</span><span class="nx">_isNewSource</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">sSource</span><span class="p">)</span> <span class="p">{</span>
<span class="k">if</span><span class="p">(</span><span class="nx">sSource</span><span class="p">)</span> <span class="p">{</span>
<span class="k">for</span><span class="p">(</span><span class="kd">var</span> <span class="nx">i</span><span class="o">=</span><span class="mi">0</span><span class="p">;</span> <span class="nx">i</span> <span class="o">&lt;</span> <span class="k">this</span><span class="p">.</span><span class="nx">sources</span><span class="p">.</span><span class="nx">length</span><span class="p">;</span> <span class="nx">i</span><span class="o">++</span><span class="p">)</span> <span class="p">{</span>
<span class="k">if</span><span class="p">(</span><span class="nx">sSource</span> <span class="o">==</span> <span class="k">this</span><span class="p">.</span><span class="nx">sources</span><span class="p">[</span><span class="nx">i</span><span class="p">])</span> <span class="p">{</span>
<span class="k">return</span> <span class="kc">false</span><span class="p">;</span>
<span class="p">}</span>
<span class="p">}</span>
<span class="k">return</span> <span class="kc">true</span><span class="p">;</span>
<span class="p">}</span>
<span class="p">};</span>
<span class="cm">/**</span>
<span class="cm"> * Outputs a log message to global console.log() function.</span>
<span class="cm"> *</span>
<span class="cm"> * @method _printToBrowserConsole</span>
<span class="cm"> * @param oEntry {Object} Log entry object.</span>
<span class="cm"> * @private</span>
<span class="cm"> */</span>
<span class="nx">YAHOO</span><span class="p">.</span><span class="nx">widget</span><span class="p">.</span><span class="nx">Logger</span><span class="p">.</span><span class="nx">_printToBrowserConsole</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">oEntry</span><span class="p">)</span> <span class="p">{</span>
<span class="k">if</span><span class="p">(</span><span class="nb">window</span><span class="p">.</span><span class="nx">console</span> <span class="o">&amp;&amp;</span> <span class="nx">console</span><span class="p">.</span><span class="nx">log</span><span class="p">)</span> <span class="p">{</span>
<span class="kd">var</span> <span class="nx">category</span> <span class="o">=</span> <span class="nx">oEntry</span><span class="p">.</span><span class="nx">category</span><span class="p">;</span>
<span class="kd">var</span> <span class="nx">label</span> <span class="o">=</span> <span class="nx">oEntry</span><span class="p">.</span><span class="nx">category</span><span class="p">.</span><span class="nx">substring</span><span class="p">(</span><span class="mi">0</span><span class="p">,</span><span class="mi">4</span><span class="p">).</span><span class="nx">toUpperCase</span><span class="p">();</span>
<span class="kd">var</span> <span class="nx">time</span> <span class="o">=</span> <span class="nx">oEntry</span><span class="p">.</span><span class="nx">time</span><span class="p">;</span>
<span class="kd">var</span> <span class="nx">localTime</span><span class="p">;</span>
<span class="k">if</span> <span class="p">(</span><span class="nx">time</span><span class="p">.</span><span class="nx">toLocaleTimeString</span><span class="p">)</span> <span class="p">{</span>
<span class="nx">localTime</span> <span class="o">=</span> <span class="nx">time</span><span class="p">.</span><span class="nx">toLocaleTimeString</span><span class="p">();</span>
<span class="p">}</span>
<span class="k">else</span> <span class="p">{</span>
<span class="nx">localTime</span> <span class="o">=</span> <span class="nx">time</span><span class="p">.</span><span class="nx">toString</span><span class="p">();</span>
<span class="p">}</span>
<span class="kd">var</span> <span class="nx">msecs</span> <span class="o">=</span> <span class="nx">time</span><span class="p">.</span><span class="nx">getTime</span><span class="p">();</span>
<span class="kd">var</span> <span class="nx">elapsedTime</span> <span class="o">=</span> <span class="p">(</span><span class="nx">YAHOO</span><span class="p">.</span><span class="nx">widget</span><span class="p">.</span><span class="nx">Logger</span><span class="p">.</span><span class="nx">_lastTime</span><span class="p">)</span> <span class="o">?</span>
<span class="p">(</span><span class="nx">msecs</span> <span class="o">-</span> <span class="nx">YAHOO</span><span class="p">.</span><span class="nx">widget</span><span class="p">.</span><span class="nx">Logger</span><span class="p">.</span><span class="nx">_lastTime</span><span class="p">)</span> <span class="o">:</span> <span class="mi">0</span><span class="p">;</span>
<span class="nx">YAHOO</span><span class="p">.</span><span class="nx">widget</span><span class="p">.</span><span class="nx">Logger</span><span class="p">.</span><span class="nx">_lastTime</span> <span class="o">=</span> <span class="nx">msecs</span><span class="p">;</span>
<span class="kd">var</span> <span class="nx">output</span> <span class="o">=</span>
<span class="nx">localTime</span> <span class="o">+</span> <span class="s2">&quot; (&quot;</span> <span class="o">+</span>
<span class="nx">elapsedTime</span> <span class="o">+</span> <span class="s2">&quot;ms): &quot;</span> <span class="o">+</span>
<span class="nx">oEntry</span><span class="p">.</span><span class="nx">source</span> <span class="o">+</span> <span class="s2">&quot;: &quot;</span><span class="p">;</span>
<span class="c1">// for bug 1987607</span>
<span class="k">if</span> <span class="p">(</span><span class="nx">YAHOO</span><span class="p">.</span><span class="nx">env</span><span class="p">.</span><span class="nx">ua</span><span class="p">.</span><span class="nx">webkit</span><span class="p">)</span> <span class="p">{</span>
<span class="nx">output</span> <span class="o">+=</span> <span class="nx">oEntry</span><span class="p">.</span><span class="nx">msg</span><span class="p">;</span>
<span class="p">}</span>
<span class="nx">console</span><span class="p">.</span><span class="nx">log</span><span class="p">(</span><span class="nx">output</span><span class="p">,</span> <span class="nx">oEntry</span><span class="p">.</span><span class="nx">msg</span><span class="p">);</span>
<span class="p">}</span>
<span class="p">};</span>
<span class="c1">/////////////////////////////////////////////////////////////////////////////</span>
<span class="c1">//</span>
<span class="c1">// Private event handlers</span>
<span class="c1">//</span>
<span class="c1">/////////////////////////////////////////////////////////////////////////////</span>
<span class="cm">/**</span>
<span class="cm"> * Handles logging of messages due to window error events.</span>
<span class="cm"> *</span>
<span class="cm"> * @method _onWindowError</span>
<span class="cm"> * @param sMsg {String} The error message.</span>
<span class="cm"> * @param sUrl {String} URL of the error.</span>
<span class="cm"> * @param sLine {String} Line number of the error.</span>
<span class="cm"> * @private</span>
<span class="cm"> */</span>
<span class="nx">YAHOO</span><span class="p">.</span><span class="nx">widget</span><span class="p">.</span><span class="nx">Logger</span><span class="p">.</span><span class="nx">_onWindowError</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">sMsg</span><span class="p">,</span><span class="nx">sUrl</span><span class="p">,</span><span class="nx">sLine</span><span class="p">)</span> <span class="p">{</span>
<span class="c1">// Logger is not in scope of this event handler</span>
<span class="k">try</span> <span class="p">{</span>
<span class="nx">YAHOO</span><span class="p">.</span><span class="nx">widget</span><span class="p">.</span><span class="nx">Logger</span><span class="p">.</span><span class="nx">log</span><span class="p">(</span><span class="nx">sMsg</span><span class="o">+</span><span class="s1">&#39; (&#39;</span><span class="o">+</span><span class="nx">sUrl</span><span class="o">+</span><span class="s1">&#39;, line &#39;</span><span class="o">+</span><span class="nx">sLine</span><span class="o">+</span><span class="s1">&#39;)&#39;</span><span class="p">,</span> <span class="s2">&quot;window&quot;</span><span class="p">);</span>
<span class="k">if</span><span class="p">(</span><span class="nx">YAHOO</span><span class="p">.</span><span class="nx">widget</span><span class="p">.</span><span class="nx">Logger</span><span class="p">.</span><span class="nx">_origOnWindowError</span><span class="p">)</span> <span class="p">{</span>
<span class="nx">YAHOO</span><span class="p">.</span><span class="nx">widget</span><span class="p">.</span><span class="nx">Logger</span><span class="p">.</span><span class="nx">_origOnWindowError</span><span class="p">();</span>
<span class="p">}</span>
<span class="p">}</span>
<span class="k">catch</span><span class="p">(</span><span class="nx">e</span><span class="p">)</span> <span class="p">{</span>
<span class="k">return</span> <span class="kc">false</span><span class="p">;</span>
<span class="p">}</span>
<span class="p">};</span>
<span class="c1">/////////////////////////////////////////////////////////////////////////////</span>
<span class="c1">//</span>
<span class="c1">// First log</span>
<span class="c1">//</span>
<span class="c1">/////////////////////////////////////////////////////////////////////////////</span>
<span class="nx">YAHOO</span><span class="p">.</span><span class="nx">widget</span><span class="p">.</span><span class="nx">Logger</span><span class="p">.</span><span class="nx">log</span><span class="p">(</span><span class="s2">&quot;Logger initialized&quot;</span><span class="p">);</span>
<span class="p">}</span>
</pre></div>
</div>
</div>
</div>
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<div class="nav">
<div id="moduleList" class="module">
<h4>Modules</h4>
<ul class="content">
<li class=""><a href="module_animation.html" title="animation">animation</a></li>
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<li class=""><a href="module_button.html" title="button">button</a></li>
<li class=""><a href="module_calendar.html" title="calendar">calendar</a></li>
<li class=""><a href="module_carousel.html" title="carousel">carousel</a></li>
<li class=""><a href="module_charts.html" title="charts">charts</a></li>
<li class=""><a href="module_colorpicker.html" title="colorpicker">colorpicker</a></li>
<li class=""><a href="module_connection.html" title="connection">connection</a></li>
<li class=""><a href="module_container.html" title="container">container</a></li>
<li class=""><a href="module_cookie.html" title="cookie">cookie</a></li>
<li class=""><a href="module_datasource.html" title="datasource">datasource</a></li>
<li class=""><a href="module_datatable.html" title="datatable">datatable</a></li>
<li class=""><a href="module_datemath.html" title="datemath">datemath</a></li>
<li class=""><a href="module_dom.html" title="dom">dom</a></li>
<li class=""><a href="module_dragdrop.html" title="dragdrop">dragdrop</a></li>
<li class=""><a href="module_editor.html" title="editor">editor</a></li>
<li class=""><a href="module_element.html" title="element">element</a></li>
<li class=""><a href="module_element-delegate.html" title="element-delegate">element-delegate</a></li>
<li class=""><a href="module_event.html" title="event">event</a></li>
<li class=""><a href="module_event-delegate.html" title="event-delegate">event-delegate</a></li>
<li class=""><a href="module_event-mouseenter.html" title="event-mouseenter">event-mouseenter</a></li>
<li class=""><a href="module_event-simulate.html" title="event-simulate">event-simulate</a></li>
<li class=""><a href="module_get.html" title="get">get</a></li>
<li class=""><a href="module_history.html" title="history">history</a></li>
<li class=""><a href="module_imagecropper.html" title="imagecropper">imagecropper</a></li>
<li class=""><a href="module_imageloader.html" title="imageloader">imageloader</a></li>
<li class=""><a href="module_json.html" title="json">json</a></li>
<li class=""><a href="module_layout.html" title="layout">layout</a></li>
<li class="selected"><a href="module_logger.html" title="logger">logger</a></li>
<li class=""><a href="module_menu.html" title="menu">menu</a></li>
<li class=""><a href="module_paginator.html" title="paginator">paginator</a></li>
<li class=""><a href="module_profiler.html" title="profiler">profiler</a></li>
<li class=""><a href="module_profilerviewer.html" title="profilerviewer">profilerviewer</a></li>
<li class=""><a href="module_progressbar.html" title="progressbar">progressbar</a></li>
<li class=""><a href="module_resize.html" title="resize">resize</a></li>
<li class=""><a href="module_selector.html" title="selector">selector</a></li>
<li class=""><a href="module_slider.html" title="slider">slider</a></li>
<li class=""><a href="module_storage.html" title="Storage">Storage</a></li>
<li class=""><a href="module_stylesheet.html" title="stylesheet">stylesheet</a></li>
<li class=""><a href="module_swf.html" title="swf">swf</a></li>
<li class=""><a href="module_swfdetect.html" title="swfdetect">swfdetect</a></li>
<li class=""><a href="module_swfstore.html" title="swfstore">swfstore</a></li>
<li class=""><a href="module_tabview.html" title="tabview">tabview</a></li>
<li class=""><a href="module_treeview.html" title="treeview">treeview</a></li>
<li class=""><a href="module_uploader.html" title="uploader">uploader</a></li>
<li class=""><a href="module_yahoo.html" title="yahoo">yahoo</a></li>
<li class=""><a href="module_yuiloader.html" title="yuiloader">yuiloader</a></li>
<li class=""><a href="module_yuitest.html" title="yuitest">yuitest</a></li>
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<h4>Classes</h4>
<ul class="content">
<li class=""><a href="LogMsg.html" title="LogMsg">LogMsg</a></li>
<li class=""><a href="LogReader.html" title="LogReader">LogReader</a></li>
<li class=""><a href="LogWriter.html" title="LogWriter">LogWriter</a></li>
<li class=""><a href="YAHOO.widget.Logger.html" title="YAHOO.widget.Logger">YAHOO.widget.Logger</a></li>
</ul>
</div>
<div id="fileList" class="module">
<h4>Files</h4>
<ul class="content">
<li class="selected"><a href="Logger.js.html" title="Logger.js">Logger.js</a></li>
<li class=""><a href="LogMsg.js.html" title="LogMsg.js">LogMsg.js</a></li>
<li class=""><a href="LogReader.js.html" title="LogReader.js">LogReader.js</a></li>
<li class=""><a href="LogWriter.js.html" title="LogWriter.js">LogWriter.js</a></li>
</ul>
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</div>
</div>
<div id="ft">
<hr />
Copyright &copy; 2010 Yahoo! Inc. All rights reserved.
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