Avoid pointless use of isset() in LBFactoryMulti()
[mediawiki.git] / resources / src / jquery / jquery.tablesorter.js
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1 /*!
2  * TableSorter for MediaWiki
3  *
4  * Written 2011 Leo Koppelkamm
5  * Based on tablesorter.com plugin, written (c) 2007 Christian Bach.
6  *
7  * Dual licensed under the MIT and GPL licenses:
8  * http://www.opensource.org/licenses/mit-license.php
9  * http://www.gnu.org/licenses/gpl.html
10  *
11  * Depends on mw.config (wgDigitTransformTable, wgDefaultDateFormat, wgPageContentLanguage)
12  * and mw.language.months.
13  *
14  * Uses 'tableSorterCollation' in mw.config (if available)
15  *
16  * Create a sortable table with multi-column sorting capabilities
17  *
18  *      // Create a simple tablesorter interface
19  *      $( 'table' ).tablesorter();
20  *
21  *      // Create a tablesorter interface, initially sorting on the first and second column
22  *      $( 'table' ).tablesorter( { sortList: [ { 0: 'desc' }, { 1: 'asc' } ] } );
23  *
24  * @param {string} [cssHeader="header"] A string of the class name to be appended to sortable
25  *         tr elements in the thead of the table.
26  *
27  * @param {string} [cssAsc="headerSortUp"] A string of the class name to be appended to
28  *         sortable tr elements in the thead on a ascending sort.
29  *
30  * @param {string} [cssDesc="headerSortDown"] A string of the class name to be appended to
31  *         sortable tr elements in the thead on a descending sort.
32  *
33  * @param {string} [sortMultisortKey="shiftKey"] A string of the multi-column sort key.
34  *
35  * @param {boolean} [cancelSelection=true] Boolean flag indicating iftablesorter should cancel
36  *         selection of the table headers text.
37  *
38  * @param {Array} [sortList] An array containing objects specifying sorting. By passing more
39  *         than one object, multi-sorting will be applied. Object structure:
40  *         { <Integer column index>: <String 'asc' or 'desc'> }
41  *
42  * @event sortEnd.tablesorter: Triggered as soon as any sorting has been applied.
43  *
44  * @author Christian Bach/christian.bach@polyester.se
45  */
46 ( function ( $, mw ) {
47         var ts,
48                 parsers = [];
50         /* Parser utility functions */
52         function getParserById( name ) {
53                 var i;
54                 for ( i = 0; i < parsers.length; i++ ) {
55                         if ( parsers[ i ].id.toLowerCase() === name.toLowerCase() ) {
56                                 return parsers[ i ];
57                         }
58                 }
59                 return false;
60         }
62         function getElementSortKey( node ) {
63                 var $node = $( node ),
64                         // Use data-sort-value attribute.
65                         // Use data() instead of attr() so that live value changes
66                         // are processed as well (bug 38152).
67                         data = $node.data( 'sortValue' );
69                 if ( data !== null && data !== undefined ) {
70                         // Cast any numbers or other stuff to a string, methods
71                         // like charAt, toLowerCase and split are expected.
72                         return String( data );
73                 }
74                 if ( !node ) {
75                         return $node.text();
76                 }
77                 if ( node.tagName.toLowerCase() === 'img' ) {
78                         return $node.attr( 'alt' ) || ''; // handle undefined alt
79                 }
80                 return $.map( $.makeArray( node.childNodes ), function ( elem ) {
81                         if ( elem.nodeType === Node.ELEMENT_NODE ) {
82                                 return getElementSortKey( elem );
83                         }
84                         return $.text( elem );
85                 } ).join( '' );
86         }
88         function detectParserForColumn( table, rows, column ) {
89                 var l = parsers.length,
90                         config = $( table ).data( 'tablesorter' ).config,
91                         cellIndex,
92                         nodeValue,
93                         // Start with 1 because 0 is the fallback parser
94                         i = 1,
95                         lastRowIndex = -1,
96                         rowIndex = 0,
97                         concurrent = 0,
98                         empty = 0,
99                         needed = ( rows.length > 4 ) ? 5 : rows.length;
101                 while ( i < l ) {
102                         // if this is a child row, continue to the next row (as buildCache())
103                         if ( rows[ rowIndex ] && !$( rows[ rowIndex ] ).hasClass( config.cssChildRow ) ) {
104                                 if ( rowIndex !== lastRowIndex ) {
105                                         lastRowIndex = rowIndex;
106                                         cellIndex = $( rows[ rowIndex ] ).data( 'columnToCell' )[ column ];
107                                         nodeValue = $.trim( getElementSortKey( rows[ rowIndex ].cells[ cellIndex ] ) );
108                                 }
109                         } else {
110                                 nodeValue = '';
111                         }
113                         if ( nodeValue !== '' ) {
114                                 if ( parsers[ i ].is( nodeValue, table ) ) {
115                                         concurrent++;
116                                         rowIndex++;
117                                         if ( concurrent >= needed ) {
118                                                 // Confirmed the parser for multiple cells, let's return it
119                                                 return parsers[ i ];
120                                         }
121                                 } else {
122                                         // Check next parser, reset rows
123                                         i++;
124                                         rowIndex = 0;
125                                         concurrent = 0;
126                                         empty = 0;
127                                 }
128                         } else {
129                                 // Empty cell
130                                 empty++;
131                                 rowIndex++;
132                                 if ( rowIndex >= rows.length ) {
133                                         if ( concurrent >= rows.length - empty ) {
134                                                 // Confirmed the parser for all filled cells
135                                                 return parsers[ i ];
136                                         }
137                                         // Check next parser, reset rows
138                                         i++;
139                                         rowIndex = 0;
140                                         concurrent = 0;
141                                         empty = 0;
142                                 }
143                         }
144                 }
146                 // 0 is always the generic parser (text)
147                 return parsers[ 0 ];
148         }
150         function buildParserCache( table, $headers ) {
151                 var sortType, len, j, parser,
152                         rows = table.tBodies[ 0 ].rows,
153                         config = $( table ).data( 'tablesorter' ).config,
154                         parsers = [];
156                 if ( rows[ 0 ] ) {
157                         len = config.columns;
158                         for ( j = 0; j < len; j++ ) {
159                                 parser = false;
160                                 sortType = $headers.eq( config.columnToHeader[ j ] ).data( 'sortType' );
161                                 if ( sortType !== undefined ) {
162                                         parser = getParserById( sortType );
163                                 }
165                                 if ( parser === false ) {
166                                         parser = detectParserForColumn( table, rows, j );
167                                 }
169                                 parsers.push( parser );
170                         }
171                 }
172                 return parsers;
173         }
175         /* Other utility functions */
177         function buildCache( table ) {
178                 var i, j, $row, cols,
179                         totalRows = ( table.tBodies[ 0 ] && table.tBodies[ 0 ].rows.length ) || 0,
180                         config = $( table ).data( 'tablesorter' ).config,
181                         parsers = config.parsers,
182                         len = parsers.length,
183                         cellIndex,
184                         cache = {
185                                 row: [],
186                                 normalized: []
187                         };
189                 for ( i = 0; i < totalRows; i++ ) {
191                         // Add the table data to main data array
192                         $row = $( table.tBodies[ 0 ].rows[ i ] );
193                         cols = [];
195                         // if this is a child row, add it to the last row's children and
196                         // continue to the next row
197                         if ( $row.hasClass( config.cssChildRow ) ) {
198                                 cache.row[ cache.row.length - 1 ] = cache.row[ cache.row.length - 1 ].add( $row );
199                                 // go to the next for loop
200                                 continue;
201                         }
203                         cache.row.push( $row );
205                         for ( j = 0; j < len; j++ ) {
206                                 cellIndex = $row.data( 'columnToCell' )[ j ];
207                                 cols.push( parsers[ j ].format( getElementSortKey( $row[ 0 ].cells[ cellIndex ] ) ) );
208                         }
210                         cols.push( cache.normalized.length ); // add position for rowCache
211                         cache.normalized.push( cols );
212                         cols = null;
213                 }
215                 return cache;
216         }
218         function appendToTable( table, cache ) {
219                 var i, pos, l, j,
220                         row = cache.row,
221                         normalized = cache.normalized,
222                         totalRows = normalized.length,
223                         checkCell = ( normalized[ 0 ].length - 1 ),
224                         fragment = document.createDocumentFragment();
226                 for ( i = 0; i < totalRows; i++ ) {
227                         pos = normalized[ i ][ checkCell ];
229                         l = row[ pos ].length;
230                         for ( j = 0; j < l; j++ ) {
231                                 fragment.appendChild( row[ pos ][ j ] );
232                         }
234                 }
235                 table.tBodies[ 0 ].appendChild( fragment );
237                 $( table ).trigger( 'sortEnd.tablesorter' );
238         }
240         /**
241          * Find all header rows in a thead-less table and put them in a <thead> tag.
242          * This only treats a row as a header row if it contains only <th>s (no <td>s)
243          * and if it is preceded entirely by header rows. The algorithm stops when
244          * it encounters the first non-header row.
245          *
246          * After this, it will look at all rows at the bottom for footer rows
247          * And place these in a tfoot using similar rules.
248          *
249          * @param {jQuery} $table object for a <table>
250          */
251         function emulateTHeadAndFoot( $table ) {
252                 var $thead, $tfoot, i, len,
253                         $rows = $table.find( '> tbody > tr' );
254                 if ( !$table.get( 0 ).tHead ) {
255                         $thead = $( '<thead>' );
256                         $rows.each( function () {
257                                 if ( $( this ).children( 'td' ).length ) {
258                                         // This row contains a <td>, so it's not a header row
259                                         // Stop here
260                                         return false;
261                                 }
262                                 $thead.append( this );
263                         } );
264                         $table.find( ' > tbody:first' ).before( $thead );
265                 }
266                 if ( !$table.get( 0 ).tFoot ) {
267                         $tfoot = $( '<tfoot>' );
268                         len = $rows.length;
269                         for ( i = len - 1; i >= 0; i-- ) {
270                                 if ( $( $rows[ i ] ).children( 'td' ).length ) {
271                                         break;
272                                 }
273                                 $tfoot.prepend( $( $rows[ i ] ) );
274                         }
275                         $table.append( $tfoot );
276                 }
277         }
279         function uniqueElements( array ) {
280                 var uniques = [];
281                 $.each( array, function ( i, elem ) {
282                         if ( elem !== undefined && $.inArray( elem, uniques ) === -1 ) {
283                                 uniques.push( elem );
284                         }
285                 } );
286                 return uniques;
287         }
289         function buildHeaders( table, msg ) {
290                 var config = $( table ).data( 'tablesorter' ).config,
291                         maxSeen = 0,
292                         colspanOffset = 0,
293                         columns,
294                         k,
295                         $cell,
296                         rowspan,
297                         colspan,
298                         headerCount,
299                         longestTR,
300                         headerIndex,
301                         exploded,
302                         $tableHeaders = $( [] ),
303                         $tableRows = $( 'thead:eq(0) > tr', table );
305                 if ( $tableRows.length <= 1 ) {
306                         $tableHeaders = $tableRows.children( 'th' );
307                 } else {
308                         exploded = [];
310                         // Loop through all the dom cells of the thead
311                         $tableRows.each( function ( rowIndex, row ) {
312                                 $.each( row.cells, function ( columnIndex, cell ) {
313                                         var matrixRowIndex,
314                                                 matrixColumnIndex;
316                                         rowspan = Number( cell.rowSpan );
317                                         colspan = Number( cell.colSpan );
319                                         // Skip the spots in the exploded matrix that are already filled
320                                         while ( exploded[ rowIndex ] && exploded[ rowIndex ][ columnIndex ] !== undefined ) {
321                                                 ++columnIndex;
322                                         }
324                                         // Find the actual dimensions of the thead, by placing each cell
325                                         // in the exploded matrix rowspan times colspan times, with the proper offsets
326                                         for ( matrixColumnIndex = columnIndex; matrixColumnIndex < columnIndex + colspan; ++matrixColumnIndex ) {
327                                                 for ( matrixRowIndex = rowIndex; matrixRowIndex < rowIndex + rowspan; ++matrixRowIndex ) {
328                                                         if ( !exploded[ matrixRowIndex ] ) {
329                                                                 exploded[ matrixRowIndex ] = [];
330                                                         }
331                                                         exploded[ matrixRowIndex ][ matrixColumnIndex ] = cell;
332                                                 }
333                                         }
334                                 } );
335                         } );
336                         // We want to find the row that has the most columns (ignoring colspan)
337                         $.each( exploded, function ( index, cellArray ) {
338                                 headerCount = $( uniqueElements( cellArray ) ).filter( 'th' ).length;
339                                 if ( headerCount >= maxSeen ) {
340                                         maxSeen = headerCount;
341                                         longestTR = index;
342                                 }
343                         } );
344                         // We cannot use $.unique() here because it sorts into dom order, which is undesirable
345                         $tableHeaders = $( uniqueElements( exploded[ longestTR ] ) ).filter( 'th' );
346                 }
348                 // as each header can span over multiple columns (using colspan=N),
349                 // we have to bidirectionally map headers to their columns and columns to their headers
350                 config.columnToHeader = [];
351                 config.headerToColumns = [];
352                 config.headerList = [];
353                 headerIndex = 0;
354                 $tableHeaders.each( function () {
355                         $cell = $( this );
356                         columns = [];
358                         if ( !$cell.hasClass( config.unsortableClass ) ) {
359                                 $cell
360                                         .addClass( config.cssHeader )
361                                         .prop( 'tabIndex', 0 )
362                                         .attr( {
363                                                 role: 'columnheader button',
364                                                 title: msg[ 1 ]
365                                         } );
367                                 for ( k = 0; k < this.colSpan; k++ ) {
368                                         config.columnToHeader[ colspanOffset + k ] = headerIndex;
369                                         columns.push( colspanOffset + k );
370                                 }
372                                 config.headerToColumns[ headerIndex ] = columns;
374                                 $cell.data( {
375                                         headerIndex: headerIndex,
376                                         order: 0,
377                                         count: 0
378                                 } );
380                                 // add only sortable cells to headerList
381                                 config.headerList[ headerIndex ] = this;
382                                 headerIndex++;
383                         }
385                         colspanOffset += this.colSpan;
386                 } );
388                 // number of columns with extended colspan, inclusive unsortable
389                 // parsers[j], cache[][j], columnToHeader[j], columnToCell[j] have so many elements
390                 config.columns = colspanOffset;
392                 return $tableHeaders.not( '.' + config.unsortableClass );
393         }
395         function isValueInArray( v, a ) {
396                 var i;
397                 for ( i = 0; i < a.length; i++ ) {
398                         if ( a[ i ][ 0 ] === v ) {
399                                 return true;
400                         }
401                 }
402                 return false;
403         }
405         /**
406          * Sets the sort count of the columns that are not affected by the sorting to have them sorted
407          * in default (ascending) order when their header cell is clicked the next time.
408          *
409          * @param {jQuery} $headers
410          * @param {Array} sortList 2D number array
411          * @param {Array} headerToColumns 2D number array
412          */
413         function setHeadersOrder( $headers, sortList, headerToColumns ) {
414                 // Loop through all headers to retrieve the indices of the columns the header spans across:
415                 $.each( headerToColumns, function ( headerIndex, columns ) {
417                         $.each( columns, function ( i, columnIndex ) {
418                                 var header = $headers[ headerIndex ],
419                                         $header = $( header );
421                                 if ( !isValueInArray( columnIndex, sortList ) ) {
422                                         // Column shall not be sorted: Reset header count and order.
423                                         $header.data( {
424                                                 order: 0,
425                                                 count: 0
426                                         } );
427                                 } else {
428                                         // Column shall be sorted: Apply designated count and order.
429                                         $.each( sortList, function ( j, sortColumn ) {
430                                                 if ( sortColumn[ 0 ] === i ) {
431                                                         $header.data( {
432                                                                 order: sortColumn[ 1 ],
433                                                                 count: sortColumn[ 1 ] + 1
434                                                         } );
435                                                         return false;
436                                                 }
437                                         } );
438                                 }
439                         } );
441                 } );
442         }
444         function setHeadersCss( table, $headers, list, css, msg, columnToHeader ) {
445                 var i, len;
446                 // Remove all header information and reset titles to default message
447                 $headers.removeClass( css[ 0 ] ).removeClass( css[ 1 ] ).attr( 'title', msg[ 1 ] );
449                 for ( i = 0, len = list.length; i < len; i++ ) {
450                         $headers
451                                 .eq( columnToHeader[ list[ i ][ 0 ] ] )
452                                 .addClass( css[ list[ i ][ 1 ] ] )
453                                 .attr( 'title', msg[ list[ i ][ 1 ] ] );
454                 }
455         }
457         function sortText( a, b ) {
458                 return ( ( a < b ) ? -1 : ( ( a > b ) ? 1 : 0 ) );
459         }
461         function sortTextDesc( a, b ) {
462                 return ( ( b < a ) ? -1 : ( ( b > a ) ? 1 : 0 ) );
463         }
465         function multisort( table, sortList, cache ) {
466                 var i,
467                         sortFn = [];
469                 for ( i = 0; i < sortList.length; i++ ) {
470                         sortFn[ i ] = ( sortList[ i ][ 1 ] ) ? sortTextDesc : sortText;
471                 }
472                 cache.normalized.sort( function ( array1, array2 ) {
473                         var i, col, ret;
474                         for ( i = 0; i < sortList.length; i++ ) {
475                                 col = sortList[ i ][ 0 ];
476                                 ret = sortFn[ i ].call( this, array1[ col ], array2[ col ] );
477                                 if ( ret !== 0 ) {
478                                         return ret;
479                                 }
480                         }
481                         // Fall back to index number column to ensure stable sort
482                         return sortText.call( this, array1[ array1.length - 1 ], array2[ array2.length - 1 ] );
483                 } );
484                 return cache;
485         }
487         function buildTransformTable() {
488                 var ascii, localised, i, digitClass,
489                         digits = '0123456789,.'.split( '' ),
490                         separatorTransformTable = mw.config.get( 'wgSeparatorTransformTable' ),
491                         digitTransformTable = mw.config.get( 'wgDigitTransformTable' );
493                 if ( separatorTransformTable === null || ( separatorTransformTable[ 0 ] === '' && digitTransformTable[ 2 ] === '' ) ) {
494                         ts.transformTable = false;
495                 } else {
496                         ts.transformTable = {};
498                         // Unpack the transform table
499                         ascii = separatorTransformTable[ 0 ].split( '\t' ).concat( digitTransformTable[ 0 ].split( '\t' ) );
500                         localised = separatorTransformTable[ 1 ].split( '\t' ).concat( digitTransformTable[ 1 ].split( '\t' ) );
502                         // Construct regexes for number identification
503                         for ( i = 0; i < ascii.length; i++ ) {
504                                 ts.transformTable[ localised[ i ] ] = ascii[ i ];
505                                 digits.push( mw.RegExp.escape( localised[ i ] ) );
506                         }
507                 }
508                 digitClass = '[' + digits.join( '', digits ) + ']';
510                 // We allow a trailing percent sign, which we just strip. This works fine
511                 // if percents and regular numbers aren't being mixed.
512                 ts.numberRegex = new RegExp( '^(' + '[-+\u2212]?[0-9][0-9,]*(\\.[0-9,]*)?(E[-+\u2212]?[0-9][0-9,]*)?' + // Fortran-style scientific
513                 '|' + '[-+\u2212]?' + digitClass + '+[\\s\\xa0]*%?' + // Generic localised
514                 ')$', 'i' );
515         }
517         function buildDateTable() {
518                 var i, name,
519                         regex = [];
521                 ts.monthNames = {};
523                 for ( i = 0; i < 12; i++ ) {
524                         name = mw.language.months.names[ i ].toLowerCase();
525                         ts.monthNames[ name ] = i + 1;
526                         regex.push( mw.RegExp.escape( name ) );
527                         name = mw.language.months.genitive[ i ].toLowerCase();
528                         ts.monthNames[ name ] = i + 1;
529                         regex.push( mw.RegExp.escape( name ) );
530                         name = mw.language.months.abbrev[ i ].toLowerCase().replace( '.', '' );
531                         ts.monthNames[ name ] = i + 1;
532                         regex.push( mw.RegExp.escape( name ) );
533                 }
535                 // Build piped string
536                 regex = regex.join( '|' );
538                 // Build RegEx
539                 // Any date formated with . , ' - or /
540                 ts.dateRegex[ 0 ] = new RegExp( /^\s*(\d{1,2})[\,\.\-\/'\s]{1,2}(\d{1,2})[\,\.\-\/'\s]{1,2}(\d{2,4})\s*?/i );
542                 // Written Month name, dmy
543                 ts.dateRegex[ 1 ] = new RegExp( '^\\s*(\\d{1,2})[\\,\\.\\-\\/\'\\s]+(' + regex + ')' + '[\\,\\.\\-\\/\'\\s]+(\\d{2,4})\\s*$', 'i' );
545                 // Written Month name, mdy
546                 ts.dateRegex[ 2 ] = new RegExp( '^\\s*(' + regex + ')' + '[\\,\\.\\-\\/\'\\s]+(\\d{1,2})[\\,\\.\\-\\/\'\\s]+(\\d{2,4})\\s*$', 'i' );
548         }
550         /**
551          * Replace all rowspanned cells in the body with clones in each row, so sorting
552          * need not worry about them.
553          *
554          * @param {jQuery} $table jQuery object for a <table>
555          */
556         function explodeRowspans( $table ) {
557                 var spanningRealCellIndex, rowSpan, colSpan,
558                         cell, cellData, i, $tds, $clone, $nextRows,
559                         rowspanCells = $table.find( '> tbody > tr > [rowspan]' ).get();
561                 // Short circuit
562                 if ( !rowspanCells.length ) {
563                         return;
564                 }
566                 // First, we need to make a property like cellIndex but taking into
567                 // account colspans. We also cache the rowIndex to avoid having to take
568                 // cell.parentNode.rowIndex in the sorting function below.
569                 $table.find( '> tbody > tr' ).each( function () {
570                         var i,
571                                 col = 0,
572                                 len = this.cells.length;
573                         for ( i = 0; i < len; i++ ) {
574                                 $( this.cells[ i ] ).data( 'tablesorter', {
575                                         realCellIndex: col,
576                                         realRowIndex: this.rowIndex
577                                 } );
578                                 col += this.cells[ i ].colSpan;
579                         }
580                 } );
582                 // Split multi row cells into multiple cells with the same content.
583                 // Sort by column then row index to avoid problems with odd table structures.
584                 // Re-sort whenever a rowspanned cell's realCellIndex is changed, because it
585                 // might change the sort order.
586                 function resortCells() {
587                         var cellAData,
588                                 cellBData,
589                                 ret;
590                         rowspanCells = rowspanCells.sort( function ( a, b ) {
591                                 cellAData = $.data( a, 'tablesorter' );
592                                 cellBData = $.data( b, 'tablesorter' );
593                                 ret = cellAData.realCellIndex - cellBData.realCellIndex;
594                                 if ( !ret ) {
595                                         ret = cellAData.realRowIndex - cellBData.realRowIndex;
596                                 }
597                                 return ret;
598                         } );
599                         $.each( rowspanCells, function () {
600                                 $.data( this, 'tablesorter' ).needResort = false;
601                         } );
602                 }
603                 resortCells();
605                 function filterfunc() {
606                         return $.data( this, 'tablesorter' ).realCellIndex >= spanningRealCellIndex;
607                 }
609                 function fixTdCellIndex() {
610                         $.data( this, 'tablesorter' ).realCellIndex += colSpan;
611                         if ( this.rowSpan > 1 ) {
612                                 $.data( this, 'tablesorter' ).needResort = true;
613                         }
614                 }
616                 while ( rowspanCells.length ) {
617                         if ( $.data( rowspanCells[ 0 ], 'tablesorter' ).needResort ) {
618                                 resortCells();
619                         }
621                         cell = rowspanCells.shift();
622                         cellData = $.data( cell, 'tablesorter' );
623                         rowSpan = cell.rowSpan;
624                         colSpan = cell.colSpan;
625                         spanningRealCellIndex = cellData.realCellIndex;
626                         cell.rowSpan = 1;
627                         $nextRows = $( cell ).parent().nextAll();
628                         for ( i = 0; i < rowSpan - 1; i++ ) {
629                                 $tds = $( $nextRows[ i ].cells ).filter( filterfunc );
630                                 $clone = $( cell ).clone();
631                                 $clone.data( 'tablesorter', {
632                                         realCellIndex: spanningRealCellIndex,
633                                         realRowIndex: cellData.realRowIndex + i,
634                                         needResort: true
635                                 } );
636                                 if ( $tds.length ) {
637                                         $tds.each( fixTdCellIndex );
638                                         $tds.first().before( $clone );
639                                 } else {
640                                         $nextRows.eq( i ).append( $clone );
641                                 }
642                         }
643                 }
644         }
646         /**
647          * Build index to handle colspanned cells in the body.
648          * Set the cell index for each column in an array,
649          * so that colspaned cells set multiple in this array.
650          * columnToCell[collumnIndex] point at the real cell in this row.
651          *
652          * @param {jQuery} $table object for a <table>
653          */
654         function manageColspans( $table ) {
655                 var i, j, k, $row,
656                         $rows = $table.find( '> tbody > tr' ),
657                         totalRows = $rows.length || 0,
658                         config = $table.data( 'tablesorter' ).config,
659                         columns = config.columns,
660                         columnToCell, cellsInRow, index;
662                 for ( i = 0; i < totalRows; i++ ) {
664                         $row = $rows.eq( i );
665                         // if this is a child row, continue to the next row (as buildCache())
666                         if ( $row.hasClass( config.cssChildRow ) ) {
667                                 // go to the next for loop
668                                 continue;
669                         }
671                         columnToCell = [];
672                         cellsInRow = ( $row[ 0 ].cells.length ) || 0;  // all cells in this row
673                         index = 0; // real cell index in this row
674                         for ( j = 0; j < columns; index++ ) {
675                                 if ( index === cellsInRow ) {
676                                         // Row with cells less than columns: add empty cell
677                                         $row.append( '<td>' );
678                                         cellsInRow++;
679                                 }
680                                 for ( k = 0; k < $row[ 0 ].cells[ index ].colSpan; k++ ) {
681                                         columnToCell[ j++ ] = index;
682                                 }
683                         }
684                         // Store it in $row
685                         $row.data( 'columnToCell', columnToCell );
686                 }
687         }
689         function buildCollationTable() {
690                 var key, keys = [];
691                 ts.collationTable = mw.config.get( 'tableSorterCollation' );
692                 ts.collationRegex = null;
693                 if ( ts.collationTable ) {
694                         // Build array of key names
695                         for ( key in ts.collationTable ) {
696                                 // Check hasOwn to be safe
697                                 if ( ts.collationTable.hasOwnProperty( key ) ) {
698                                         keys.push( mw.RegExp.escape( key ) );
699                                 }
700                         }
701                         if ( keys.length ) {
702                                 ts.collationRegex = new RegExp( keys.join( '|' ), 'ig' );
703                         }
704                 }
705         }
707         function cacheRegexs() {
708                 if ( ts.rgx ) {
709                         return;
710                 }
711                 ts.rgx = {
712                         IPAddress: [
713                                 new RegExp( /^\d{1,3}[\.]\d{1,3}[\.]\d{1,3}[\.]\d{1,3}$/ )
714                         ],
715                         currency: [
716                                 new RegExp( /(^[£$€¥]|[£$€¥]$)/ ),
717                                 new RegExp( /[£$€¥]/g )
718                         ],
719                         url: [
720                                 new RegExp( /^(https?|ftp|file):\/\/$/ ),
721                                 new RegExp( /(https?|ftp|file):\/\// )
722                         ],
723                         isoDate: [
724                                 new RegExp( /^([-+]?\d{1,4})-([01]\d)-([0-3]\d)([T\s]((([01]\d|2[0-3])(:?[0-5]\d)?|24:?00)?(:?([0-5]\d|60))?([.,]\d+)?)([zZ]|([\+-])([01]\d|2[0-3]):?([0-5]\d)?)?)?/ ),
725                                 new RegExp( /^([-+]?\d{1,4})-([01]\d)-([0-3]\d)/ )
726                         ],
727                         usLongDate: [
728                                 new RegExp( /^[A-Za-z]{3,10}\.? [0-9]{1,2}, ([0-9]{4}|'?[0-9]{2}) (([0-2]?[0-9]:[0-5][0-9])|([0-1]?[0-9]:[0-5][0-9]\s(AM|PM)))$/ )
729                         ],
730                         time: [
731                                 new RegExp( /^(([0-2]?[0-9]:[0-5][0-9])|([0-1]?[0-9]:[0-5][0-9]\s(am|pm)))$/ )
732                         ]
733                 };
734         }
736         /**
737          * Converts sort objects [ { Integer: String }, ... ] to the internally used nested array
738          * structure [ [ Integer , Integer ], ... ]
739          *
740          * @param {Array} sortObjects List of sort objects.
741          * @return {Array} List of internal sort definitions.
742          */
743         function convertSortList( sortObjects ) {
744                 var sortList = [];
745                 $.each( sortObjects, function ( i, sortObject ) {
746                         $.each( sortObject, function ( columnIndex, order ) {
747                                 var orderIndex = ( order === 'desc' ) ? 1 : 0;
748                                 sortList.push( [ parseInt( columnIndex, 10 ), orderIndex ] );
749                         } );
750                 } );
751                 return sortList;
752         }
754         /* Public scope */
756         $.tablesorter = {
757                 defaultOptions: {
758                         cssHeader: 'headerSort',
759                         cssAsc: 'headerSortUp',
760                         cssDesc: 'headerSortDown',
761                         cssChildRow: 'expand-child',
762                         sortMultiSortKey: 'shiftKey',
763                         unsortableClass: 'unsortable',
764                         parsers: [],
765                         cancelSelection: true,
766                         sortList: [],
767                         headerList: [],
768                         headerToColumns: [],
769                         columnToHeader: [],
770                         columns: 0
771                 },
773                 dateRegex: [],
774                 monthNames: {},
776                 /**
777                  * @param {jQuery} $tables
778                  * @param {Object} [settings]
779                  * @return {jQuery}
780                  */
781                 construct: function ( $tables, settings ) {
782                         return $tables.each( function ( i, table ) {
783                                 // Declare and cache.
784                                 var $headers, cache, config, sortCSS, sortMsg,
785                                         $table = $( table ),
786                                         firstTime = true;
788                                 // Quit if no tbody
789                                 if ( !table.tBodies ) {
790                                         return;
791                                 }
792                                 if ( !table.tHead ) {
793                                         // No thead found. Look for rows with <th>s and
794                                         // move them into a <thead> tag or a <tfoot> tag
795                                         emulateTHeadAndFoot( $table );
797                                         // Still no thead? Then quit
798                                         if ( !table.tHead ) {
799                                                 return;
800                                         }
801                                 }
802                                 $table.addClass( 'jquery-tablesorter' );
804                                 // Merge and extend
805                                 config = $.extend( {}, $.tablesorter.defaultOptions, settings );
807                                 // Save the settings where they read
808                                 $.data( table, 'tablesorter', { config: config } );
810                                 // Get the CSS class names, could be done elsewhere
811                                 sortCSS = [ config.cssAsc, config.cssDesc ];
812                                 // Messages tell the the user what the *next* state will be
813                                 // so are in reverse order to the CSS classes.
814                                 sortMsg = [ mw.msg( 'sort-descending' ), mw.msg( 'sort-ascending' ) ];
816                                 // Build headers
817                                 $headers = buildHeaders( table, sortMsg );
819                                 // Grab and process locale settings.
820                                 buildTransformTable();
821                                 buildDateTable();
823                                 // Precaching regexps can bring 10 fold
824                                 // performance improvements in some browsers.
825                                 cacheRegexs();
827                                 function setupForFirstSort() {
828                                         var $tfoot, $sortbottoms;
830                                         firstTime = false;
832                                         // Defer buildCollationTable to first sort. As user and site scripts
833                                         // may customize tableSorterCollation but load after $.ready(), other
834                                         // scripts may call .tablesorter() before they have done the
835                                         // tableSorterCollation customizations.
836                                         buildCollationTable();
838                                         // Legacy fix of .sortbottoms
839                                         // Wrap them inside a tfoot (because that's what they actually want to be)
840                                         // and put the <tfoot> at the end of the <table>
841                                         $sortbottoms = $table.find( '> tbody > tr.sortbottom' );
842                                         if ( $sortbottoms.length ) {
843                                                 $tfoot = $table.children( 'tfoot' );
844                                                 if ( $tfoot.length ) {
845                                                         $tfoot.eq( 0 ).prepend( $sortbottoms );
846                                                 } else {
847                                                         $table.append( $( '<tfoot>' ).append( $sortbottoms ) );
848                                                 }
849                                         }
851                                         explodeRowspans( $table );
852                                         manageColspans( $table );
854                                         // Try to auto detect column type, and store in tables config
855                                         config.parsers = buildParserCache( table, $headers );
856                                 }
858                                 // Apply event handling to headers
859                                 // this is too big, perhaps break it out?
860                                 $headers.on( 'keypress click', function ( e ) {
861                                         var cell, $cell, columns, newSortList, i,
862                                                 totalRows,
863                                                 j, s, o;
865                                         if ( e.type === 'click' && e.target.nodeName.toLowerCase() === 'a' ) {
866                                                 // The user clicked on a link inside a table header.
867                                                 // Do nothing and let the default link click action continue.
868                                                 return true;
869                                         }
871                                         if ( e.type === 'keypress' && e.which !== 13 ) {
872                                                 // Only handle keypresses on the "Enter" key.
873                                                 return true;
874                                         }
876                                         if ( firstTime ) {
877                                                 setupForFirstSort();
878                                         }
880                                         // Build the cache for the tbody cells
881                                         // to share between calculations for this sort action.
882                                         // Re-calculated each time a sort action is performed due to possiblity
883                                         // that sort values change. Shouldn't be too expensive, but if it becomes
884                                         // too slow an event based system should be implemented somehow where
885                                         // cells get event .change() and bubbles up to the <table> here
886                                         cache = buildCache( table );
888                                         totalRows = ( $table[ 0 ].tBodies[ 0 ] && $table[ 0 ].tBodies[ 0 ].rows.length ) || 0;
889                                         if ( totalRows > 0 ) {
890                                                 cell = this;
891                                                 $cell = $( cell );
893                                                 // Get current column sort order
894                                                 $cell.data( {
895                                                         order: $cell.data( 'count' ) % 2,
896                                                         count: $cell.data( 'count' ) + 1
897                                                 } );
899                                                 cell = this;
900                                                 // Get current column index
901                                                 columns = config.headerToColumns[ $cell.data( 'headerIndex' ) ];
902                                                 newSortList = $.map( columns, function ( c ) {
903                                                         // jQuery "helpfully" flattens the arrays...
904                                                         return [ [ c, $cell.data( 'order' ) ] ];
905                                                 } );
906                                                 // Index of first column belonging to this header
907                                                 i = columns[ 0 ];
909                                                 if ( !e[ config.sortMultiSortKey ] ) {
910                                                         // User only wants to sort on one column set
911                                                         // Flush the sort list and add new columns
912                                                         config.sortList = newSortList;
913                                                 } else {
914                                                         // Multi column sorting
915                                                         // It is not possible for one column to belong to multiple headers,
916                                                         // so this is okay - we don't need to check for every value in the columns array
917                                                         if ( isValueInArray( i, config.sortList ) ) {
918                                                                 // The user has clicked on an already sorted column.
919                                                                 // Reverse the sorting direction for all tables.
920                                                                 for ( j = 0; j < config.sortList.length; j++ ) {
921                                                                         s = config.sortList[ j ];
922                                                                         o = config.headerList[ config.columnToHeader[ s[ 0 ] ] ];
923                                                                         if ( isValueInArray( s[ 0 ], newSortList ) ) {
924                                                                                 $( o ).data( 'count', s[ 1 ] + 1 );
925                                                                                 s[ 1 ] = $( o ).data( 'count' ) % 2;
926                                                                         }
927                                                                 }
928                                                         } else {
929                                                                 // Add columns to sort list array
930                                                                 config.sortList = config.sortList.concat( newSortList );
931                                                         }
932                                                 }
934                                                 // Reset order/counts of cells not affected by sorting
935                                                 setHeadersOrder( $headers, config.sortList, config.headerToColumns );
937                                                 // Set CSS for headers
938                                                 setHeadersCss( $table[ 0 ], $headers, config.sortList, sortCSS, sortMsg, config.columnToHeader );
939                                                 appendToTable(
940                                                         $table[ 0 ], multisort( $table[ 0 ], config.sortList, cache )
941                                                 );
943                                                 // Stop normal event by returning false
944                                                 return false;
945                                         }
947                                 // Cancel selection
948                                 } ).mousedown( function () {
949                                         if ( config.cancelSelection ) {
950                                                 this.onselectstart = function () {
951                                                         return false;
952                                                 };
953                                                 return false;
954                                         }
955                                 } );
957                                 /**
958                                  * Sorts the table. If no sorting is specified by passing a list of sort
959                                  * objects, the table is sorted according to the initial sorting order.
960                                  * Passing an empty array will reset sorting (basically just reset the headers
961                                  * making the table appear unsorted).
962                                  *
963                                  * @param {Array} [sortList] List of sort objects.
964                                  */
965                                 $table.data( 'tablesorter' ).sort = function ( sortList ) {
967                                         if ( firstTime ) {
968                                                 setupForFirstSort();
969                                         }
971                                         if ( sortList === undefined ) {
972                                                 sortList = config.sortList;
973                                         } else if ( sortList.length > 0 ) {
974                                                 sortList = convertSortList( sortList );
975                                         }
977                                         // Set each column's sort count to be able to determine the correct sort
978                                         // order when clicking on a header cell the next time
979                                         setHeadersOrder( $headers, sortList, config.headerToColumns );
981                                         // re-build the cache for the tbody cells
982                                         cache = buildCache( table );
984                                         // set css for headers
985                                         setHeadersCss( table, $headers, sortList, sortCSS, sortMsg, config.columnToHeader );
987                                         // sort the table and append it to the dom
988                                         appendToTable( table, multisort( table, sortList, cache ) );
989                                 };
991                                 // sort initially
992                                 if ( config.sortList.length > 0 ) {
993                                         config.sortList = convertSortList( config.sortList );
994                                         $table.data( 'tablesorter' ).sort();
995                                 }
997                         } );
998                 },
1000                 addParser: function ( parser ) {
1001                         if ( !getParserById( parser.id ) ) {
1002                                 parsers.push( parser );
1003                         }
1004                 },
1006                 formatDigit: function ( s ) {
1007                         var out, c, p, i;
1008                         if ( ts.transformTable !== false ) {
1009                                 out = '';
1010                                 for ( p = 0; p < s.length; p++ ) {
1011                                         c = s.charAt( p );
1012                                         if ( c in ts.transformTable ) {
1013                                                 out += ts.transformTable[ c ];
1014                                         } else {
1015                                                 out += c;
1016                                         }
1017                                 }
1018                                 s = out;
1019                         }
1020                         i = parseFloat( s.replace( /[, ]/g, '' ).replace( '\u2212', '-' ) );
1021                         return isNaN( i ) ? 0 : i;
1022                 },
1024                 formatFloat: function ( s ) {
1025                         var i = parseFloat( s );
1026                         return isNaN( i ) ? 0 : i;
1027                 },
1029                 formatInt: function ( s ) {
1030                         var i = parseInt( s, 10 );
1031                         return isNaN( i ) ? 0 : i;
1032                 },
1034                 clearTableBody: function ( table ) {
1035                         $( table.tBodies[ 0 ] ).empty();
1036                 },
1038                 getParser: function ( id ) {
1039                         buildTransformTable();
1040                         buildDateTable();
1041                         cacheRegexs();
1042                         buildCollationTable();
1044                         return getParserById( id );
1045                 },
1047                 getParsers: function () {  // for table diagnosis
1048                         return parsers;
1049                 }
1050         };
1052         // Shortcut
1053         ts = $.tablesorter;
1055         // Register as jQuery prototype method
1056         $.fn.tablesorter = function ( settings ) {
1057                 return ts.construct( this, settings );
1058         };
1060         // Add default parsers
1061         ts.addParser( {
1062                 id: 'text',
1063                 is: function () {
1064                         return true;
1065                 },
1066                 format: function ( s ) {
1067                         var tsc;
1068                         s = $.trim( s.toLowerCase() );
1069                         if ( ts.collationRegex ) {
1070                                 tsc = ts.collationTable;
1071                                 s = s.replace( ts.collationRegex, function ( match ) {
1072                                         var r = tsc[ match ] ? tsc[ match ] : tsc[ match.toUpperCase() ];
1073                                         return r.toLowerCase();
1074                                 } );
1075                         }
1076                         return s;
1077                 },
1078                 type: 'text'
1079         } );
1081         ts.addParser( {
1082                 id: 'IPAddress',
1083                 is: function ( s ) {
1084                         return ts.rgx.IPAddress[ 0 ].test( s );
1085                 },
1086                 format: function ( s ) {
1087                         var i, item,
1088                                 a = s.split( '.' ),
1089                                 r = '';
1090                         for ( i = 0; i < a.length; i++ ) {
1091                                 item = a[ i ];
1092                                 if ( item.length === 1 ) {
1093                                         r += '00' + item;
1094                                 } else if ( item.length === 2 ) {
1095                                         r += '0' + item;
1096                                 } else {
1097                                         r += item;
1098                                 }
1099                         }
1100                         return $.tablesorter.formatFloat( r );
1101                 },
1102                 type: 'numeric'
1103         } );
1105         ts.addParser( {
1106                 id: 'currency',
1107                 is: function ( s ) {
1108                         return ts.rgx.currency[ 0 ].test( s );
1109                 },
1110                 format: function ( s ) {
1111                         return $.tablesorter.formatDigit( s.replace( ts.rgx.currency[ 1 ], '' ) );
1112                 },
1113                 type: 'numeric'
1114         } );
1116         ts.addParser( {
1117                 id: 'url',
1118                 is: function ( s ) {
1119                         return ts.rgx.url[ 0 ].test( s );
1120                 },
1121                 format: function ( s ) {
1122                         return $.trim( s.replace( ts.rgx.url[ 1 ], '' ) );
1123                 },
1124                 type: 'text'
1125         } );
1127         ts.addParser( {
1128                 id: 'isoDate',
1129                 is: function ( s ) {
1130                         return ts.rgx.isoDate[ 0 ].test( s );
1131                 },
1132                 format: function ( s ) {
1133                         var isodate, matches;
1134                         if ( !Date.prototype.toISOString ) {
1135                                 // Old browsers don't understand iso, Fallback to US date parsing and ignore the time part.
1136                                 matches = $.trim( s ).match( ts.rgx.isoDate[ 1 ] );
1137                                 if ( !matches ) {
1138                                         return $.tablesorter.formatFloat( 0 );
1139                                 }
1140                                 isodate = new Date( matches[ 2 ] + '/' + matches[ 3 ] + '/' + matches[ 1 ] );
1141                         } else {
1142                                 matches = s.match( ts.rgx.isoDate[ 0 ] );
1143                                 if ( !matches ) {
1144                                         return $.tablesorter.formatFloat( 0 );
1145                                 }
1146                                 isodate = new Date( $.trim( matches[ 0 ] ) );
1147                         }
1148                         return $.tablesorter.formatFloat( ( isodate !== undefined ) ? isodate.getTime() : 0 );
1149                 },
1150                 type: 'numeric'
1151         } );
1153         ts.addParser( {
1154                 id: 'usLongDate',
1155                 is: function ( s ) {
1156                         return ts.rgx.usLongDate[ 0 ].test( s );
1157                 },
1158                 format: function ( s ) {
1159                         return $.tablesorter.formatFloat( new Date( s ).getTime() );
1160                 },
1161                 type: 'numeric'
1162         } );
1164         ts.addParser( {
1165                 id: 'date',
1166                 is: function ( s ) {
1167                         return ( ts.dateRegex[ 0 ].test( s ) || ts.dateRegex[ 1 ].test( s ) || ts.dateRegex[ 2 ].test( s ) );
1168                 },
1169                 format: function ( s ) {
1170                         var match, y;
1171                         s = $.trim( s.toLowerCase() );
1173                         if ( ( match = s.match( ts.dateRegex[ 0 ] ) ) !== null ) {
1174                                 if ( mw.config.get( 'wgDefaultDateFormat' ) === 'mdy' || mw.config.get( 'wgPageContentLanguage' ) === 'en' ) {
1175                                         s = [ match[ 3 ], match[ 1 ], match[ 2 ] ];
1176                                 } else if ( mw.config.get( 'wgDefaultDateFormat' ) === 'dmy' ) {
1177                                         s = [ match[ 3 ], match[ 2 ], match[ 1 ] ];
1178                                 } else {
1179                                         // If we get here, we don't know which order the dd-dd-dddd
1180                                         // date is in. So return something not entirely invalid.
1181                                         return '99999999';
1182                                 }
1183                         } else if ( ( match = s.match( ts.dateRegex[ 1 ] ) ) !== null ) {
1184                                 s = [ match[ 3 ], String( ts.monthNames[ match[ 2 ] ] ), match[ 1 ] ];
1185                         } else if ( ( match = s.match( ts.dateRegex[ 2 ] ) ) !== null ) {
1186                                 s = [ match[ 3 ], String( ts.monthNames[ match[ 1 ] ] ), match[ 2 ] ];
1187                         } else {
1188                                 // Should never get here
1189                                 return '99999999';
1190                         }
1192                         // Pad Month and Day
1193                         if ( s[ 1 ].length === 1 ) {
1194                                 s[ 1 ] = '0' + s[ 1 ];
1195                         }
1196                         if ( s[ 2 ].length === 1 ) {
1197                                 s[ 2 ] = '0' + s[ 2 ];
1198                         }
1200                         if ( ( y = parseInt( s[ 0 ], 10 ) ) < 100 ) {
1201                                 // Guestimate years without centuries
1202                                 if ( y < 30 ) {
1203                                         s[ 0 ] = 2000 + y;
1204                                 } else {
1205                                         s[ 0 ] = 1900 + y;
1206                                 }
1207                         }
1208                         while ( s[ 0 ].length < 4 ) {
1209                                 s[ 0 ] = '0' + s[ 0 ];
1210                         }
1211                         return parseInt( s.join( '' ), 10 );
1212                 },
1213                 type: 'numeric'
1214         } );
1216         ts.addParser( {
1217                 id: 'time',
1218                 is: function ( s ) {
1219                         return ts.rgx.time[ 0 ].test( s );
1220                 },
1221                 format: function ( s ) {
1222                         return $.tablesorter.formatFloat( new Date( '2000/01/01 ' + s ).getTime() );
1223                 },
1224                 type: 'numeric'
1225         } );
1227         ts.addParser( {
1228                 id: 'number',
1229                 is: function ( s ) {
1230                         return $.tablesorter.numberRegex.test( $.trim( s ) );
1231                 },
1232                 format: function ( s ) {
1233                         return $.tablesorter.formatDigit( s );
1234                 },
1235                 type: 'numeric'
1236         } );
1238 }( jQuery, mediaWiki ) );