resources/mediawiki/mediawiki.log.js

   1 /**
   2  * Logger for MediaWiki javascript.
   3  * Implements the stub left by the main 'mediawiki' module.
   4  *
   5  * @author Michael Dale <mdale@wikimedia.org>
   6  * @author Trevor Parscal <tparscal@wikimedia.org>
   7  */
   8
   9 ( function ( mw, $ ) {
  10
  11         /**
  12          * Logs a message to the console.
  13          *
  14          * In the case the browser does not have a console API, a console is created on-the-fly by appending
  15          * a <div id="mw-log-console"> element to the bottom of the body and then appending this and future
  16          * messages to that, instead of the console.
  17          *
  18          * @param {String} First in list of variadic messages to output to console.
  19          */
  20         mw.log = function ( /* logmsg, logmsg, */ ) {
  21                 // Turn arguments into an array
  22                 var     args = Array.prototype.slice.call( arguments ),
  23                         // Allow log messages to use a configured prefix to identify the source window (ie. frame)
  24                         prefix = mw.config.exists( 'mw.log.prefix' ) ? mw.config.get( 'mw.log.prefix' ) + '> ' : '';
  25
  26                 // Try to use an existing console
  27                 if ( window.console !== undefined && $.isFunction( window.console.log ) ) {
  28                         args.unshift( prefix );
  29                         window.console.log.apply( window.console, args );
  30                         return;
  31                 }
  32
  33                 // If there is no console, use our own log box
  34                 mw.loader.using( 'jquery.footHovzer', function () {
  35
  36                         var     hovzer,
  37                                 d = new Date(),
  38                                 // Create HH:MM:SS.MIL timestamp
  39                                 time = ( d.getHours() < 10 ? '0' + d.getHours() : d.getHours() ) +
  40                                  ':' + ( d.getMinutes() < 10 ? '0' + d.getMinutes() : d.getMinutes() ) +
  41                                  ':' + ( d.getSeconds() < 10 ? '0' + d.getSeconds() : d.getSeconds() ) +
  42                                  '.' + ( d.getMilliseconds() < 10 ? '00' + d.getMilliseconds() : ( d.getMilliseconds() < 100 ? '0' + d.getMilliseconds() : d.getMilliseconds() ) ),
  43                                  $log = $( '#mw-log-console' );
  44
  45                         if ( !$log.length ) {
  46                                 $log = $( '<div id="mw-log-console"></div>' ).css( {
  47                                                 overflow: 'auto',
  48                                                 height: '150px',
  49                                                 backgroundColor: 'white',
  50                                                 borderTop: 'solid 2px #ADADAD'
  51                                         } );
  52                                 hovzer = $.getFootHovzer();
  53                                 hovzer.$.append( $log );
  54                                 hovzer.update();
  55                         }
  56                         $log.append(
  57                                 $( '<div></div>' )
  58                                         .css( {
  59                                                 borderBottom: 'solid 1px #DDDDDD',
  60                                                 fontSize: 'small',
  61                                                 fontFamily: 'monospace',
  62                                                 whiteSpace: 'pre-wrap',
  63                                                 padding: '0.125em 0.25em'
  64                                         } )
  65                                         .text( prefix + args.join( ', ' ) )
  66                                         .prepend( '<span style="float: right;">[' + time + ']</span>' )
  67                         );
  68                 } );
  69         };
  70
  71 }( mediaWiki, jQuery ) );