MediaWiki:Common.js

/* Any JavaScript here will be loaded for users using the 2 column main page layout */ /***************************************** /* Front Page column height equalization * /*****************************************/ // Author: Shawn Bruckner // Date:   2015-Feb-12 // License: CC-BY 3.0 // Version: beta

var fp = fp || { equalizeColumns : function { $( '.fpcontent' ).each( function {      fp.resetSectionBoxHeights( $( this ).find( '#fptopsection, #fpflexsection, #fpbottomsection' ) );    } ); var excludeSel = ''; if ( $( window ).width > 1539 ) { excludeSel = '.fpmaybercol'; // at this width, it's necessary to hit those boxes in a separate pass after .fpcontent }   if ( $( window ).width > 889 ) { fp.equalizeColumnsOfBlock( '.fpcontent',                                '#fptopsection, #fpbottomsection',                                 '#fpbottomsection',                                 '#fpflexsection',                                 '#fpflexsection',                                 excludeSel                               ); }   if ( $( window ).width > 1539 ) { fp.equalizeColumnsOfBlock( '.fpmaybecols',                                '.fpmaybelcol',                                 '.fpmaybelcol',                                 '.fpmaybercol',                                 '.fpmaybercol',                                 ''                               ); } },

equalizeColumnsOfBlock : function( blockSel, leftSel, leftBottomSel, rightSel, rightBottomSel, excludeSel ) { $( blockSel ).each( function ( index ) {     var tryCount = 0;      do {        var leftBottom = $( this ).find( leftBottomSel ).offset.top + $( this ).find( leftBottomSel ).height;        var rightBottom = $( this ).find( rightBottomSel ).offset.top + $( this ).find( rightBottomSel ).height;

var difference = Math.round( Math.abs( rightBottom - leftBottom ) ); if ( leftBottom < rightBottom ) { fp.adjustSectionBoxHeights( difference, $( this ).find( leftSel ).not( excludeSel ) ); } else if ( rightBottom < leftBottom ) { fp.adjustSectionBoxHeights( difference, $( this ).find( rightSel ).not( excludeSel ) ); }       ++tryCount; } while ( Math.round( leftBottom ) != Math.round( rightBottom ) && tryCount < 4 ); } ); },

resetSectionBoxHeights : function ( sections ) { sections.each( function {      $( this ).find( '.fpbox' ).each( function  { $( this ).height( 'auto' ); } );   } );  },

adjustSectionBoxHeights : function ( heightToAdd, sections ) { var boxCount = 0; sections.each( function {     boxCount += $( this ).find( '.fpbox' ).length;    } );

var avgHeightToAdd = heightToAdd / boxCount; var decimalPortion = 0.0; var boxes, heightToAdd; sections.each( function {     boxes = $( this ).find( '.fpbox' );

boxes.each( function {       heightToAdd = Math.round( decimalPortion + avgHeightToAdd ); /* should iron out rounding error */        decimalPortion += avgHeightToAdd - heightToAdd;        $( this ).height( $( this ).height + heightToAdd );      } ); } ); } };

$( document ).ready( fp.equalizeColumns ); $( window ).resize( fp.equalizeColumns ); /********************************************* /* End Front Page column height equalization * /*********************************************/

/************************* * JQuery Random Plugin * *************************/

/** * Adds a 'random' filter to jQuery, which selects 1 or more elements at random for the current jQuery set. * Defaults to 1 element if a amount isn't given. */

jQuery.fn.random = function(count) { var count = (typeof count !== 'undefined') ? count : 1; // Return the current set if an invalid count is asked for. if ( count < 1 || count >= this.length || ! Number.isInteger(Number(count)) ) { return jQuery(this); }

var indexes = []; var resultset = []; while ( indexes.length < count ) { // Generate a random index var index = Math.floor(Math.random * this.length); // reroll the random index if it's already present var reroll = false; for (var i = 0; i < indexes.length; i++) { if ( indexes[i] == index ) { reroll = true; }       }        if (reroll) { continue; }

// Add the index/element to the result set indexes.push(index); resultset.push(this[index]); }   return jQuery(resultset); }

/***************** * Random subset * *****************/

/** * A random subset of list elements within elements with the 'random-subset' class are show, while the rest are hidden. * The 'data-random-subset-count' attribute can be used to specify the number of elements to be displayed. */

$('.random-subset').each(function {   var count = 1;    // If the data-random-subset-count attribute is present use that count    if ($(this).attr('data-random-subset-count')) {        count = $(this).attr('data-random-subset-count');    }    var entries = $(this).find('li');    $(entries).random(entries.length - count).remove;    // show the root element in case it was hidden while waiting for JS.    $(this).show; });