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media/jquery/tablesorter-master/addons/pager/jquery.tablesorter.pager.js

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/*!
* tablesorter (FORK) pager plugin
* updated 4/18/2017 (v2.28.8)
*/
/*jshint browser:true, jquery:true, unused:false */
;(function($) {
    'use strict';
    /*jshint supernew:true */
    var ts = $.tablesorter;

    $.extend({
        tablesorterPager: new function() {

            this.defaults = {
                // target the pager markup
                container: null,

                // use this format: "http://mydatabase.com?page={page}&size={size}&{sortList:col}&{filterList:fcol}"
                // where {page} is replaced by the page number, {size} is replaced by the number of records to show,
                // {sortList:col} adds the sortList to the url into a "col" array, and {filterList:fcol} adds
                // the filterList to the url into an "fcol" array.
                // So a sortList = [[2,0],[3,0]] becomes "&col[2]=0&col[3]=0" in the url
                // and a filterList = [[2,Blue],[3,13]] becomes "&fcol[2]=Blue&fcol[3]=13" in the url
                ajaxUrl: null,

                // modify the url after all processing has been applied
                customAjaxUrl: function(table, url) { return url; },

                // ajax error callback from $.tablesorter.showError function
                // ajaxError: function( config, xhr, settings, exception ){ return exception; };
                // returning false will abort the error message
                ajaxError: null,

                // modify the $.ajax object to allow complete control over your ajax requests
                ajaxObject: {
                    dataType: 'json'
                },

                // set this to false if you want to block ajax loading on init
                processAjaxOnInit: true,

                // process ajax so that the following information is returned:
                // [ total_rows (number), rows (array of arrays), headers (array; optional) ]
                // example:
                // [
                //   100,  // total rows
                //   [
                //     [ "row1cell1", "row1cell2", ... "row1cellN" ],
                //     [ "row2cell1", "row2cell2", ... "row2cellN" ],
                //     ...
                //     [ "rowNcell1", "rowNcell2", ... "rowNcellN" ]
                //   ],
                //   [ "header1", "header2", ... "headerN" ] // optional
                // ]
                ajaxProcessing: function(ajax){ return [ 0, [], null ]; },

                // output default: '{page}/{totalPages}'
                // possible variables: {size}, {page}, {totalPages}, {filteredPages}, {startRow},
                // {endRow}, {filteredRows} and {totalRows}
                output: '{startRow} to {endRow} of {totalRows} rows', // '{page}/{totalPages}'

                // apply disabled classname to the pager arrows when the rows at either extreme is visible
                updateArrows: true,

                // starting page of the pager (zero based index)
                page: 0,

                // reset pager after filtering; set to desired page #
                // set to false to not change page at filter start
                pageReset: 0,

                // Number of visible rows
                size: 10,

                // Number of options to include in the pager number selector
                maxOptionSize: 20,

                // Save pager page & size if the storage script is loaded (requires $.tablesorter.storage in jquery.tablesorter.widgets.js)
                savePages: true,

                // defines custom storage key
                storageKey: 'tablesorter-pager',

                // if true, the table will remain the same height no matter how many records are displayed. The space is made up by an empty
                // table row set to a height to compensate; default is false
                fixedHeight: false,

                // count child rows towards the set page size? (set true if it is a visible table row within the pager)
                // if true, child row(s) may not appear to be attached to its parent row, may be split across pages or
                // may distort the table if rowspan or cellspans are included.
                countChildRows: false,

                // remove rows from the table to speed up the sort of large tables.
                // setting this to false, only hides the non-visible rows; needed if you plan to add/remove rows with the pager enabled.
                removeRows: false, // removing rows in larger tables speeds up the sort

                // css class names of pager arrows
                cssFirst: '.first', // go to first page arrow
                cssPrev: '.prev', // previous page arrow
                cssNext: '.next', // next page arrow
                cssLast: '.last', // go to last page arrow
                cssGoto: '.gotoPage', // go to page selector - select dropdown that sets the current page
                cssPageDisplay: '.pagedisplay', // location of where the "output" is displayed
                cssPageSize: '.pagesize', // page size selector - select dropdown that sets the "size" option
                cssErrorRow: 'tablesorter-errorRow', // error information row

                // class added to arrows when at the extremes (i.e. prev/first arrows are "disabled" when on the first page)
                cssDisabled: 'disabled', // Note there is no period "." in front of this class name

                // stuff not set by the user
                totalRows: 0,
                totalPages: 0,
                filteredRows: 0,
                filteredPages: 0,
                ajaxCounter: 0,
                currentFilters: [],
                startRow: 0,
                endRow: 0,
                $size: null,
                last: {}

            };

            var pagerEvents = 'filterInit filterStart filterEnd sortEnd disablePager enablePager destroyPager updateComplete ' +
            'pageSize pageSet pageAndSize pagerUpdate refreshComplete ',

            $this = this,

            // hide arrows at extremes
            pagerArrows = function( table, p, disable ) {
                var tmp,
                    a = 'addClass',
                    r = 'removeClass',
                    d = p.cssDisabled,
                    dis = !!disable,
                    first = ( dis || p.page === 0 ),
                    tp = getTotalPages( table, p ),
                    last = ( dis || (p.page === tp - 1) || tp === 0 );
                if ( p.updateArrows ) {
                    tmp = p.$container.find(p.cssFirst + ',' + p.cssPrev);
                    tmp[ first ? a : r ](d); // toggle disabled class
                    tmp.each(function(){
                        this.ariaDisabled = first;
                    });
                    tmp = p.$container.find(p.cssNext + ',' + p.cssLast);
                    tmp[ last ? a : r ](d);
                    tmp.each(function(){
                        this.ariaDisabled = last;
                    });
                }
            },

            calcFilters = function(table, p) {
                var normalized, indx, len,
                c = table.config,
                hasFilters = c.$table.hasClass('hasFilters');
                if (hasFilters && !p.ajax) {
                    if (ts.isEmptyObject(c.cache)) {
                        // delayInit: true so nothing is in the cache
                        p.filteredRows = p.totalRows = c.$tbodies.eq(0).children('tr').not( p.countChildRows ? '' : '.' + c.cssChildRow ).length;
                    } else {
                        p.filteredRows = 0;
                        normalized = c.cache[0].normalized;
                        len = normalized.length;
                        for (indx = 0; indx < len; indx++) {
                            p.filteredRows += p.regexRows.test(normalized[indx][c.columns].$row[0].className) ? 0 : 1;
                        }
                    }
                } else if (!hasFilters) {
                    p.filteredRows = p.totalRows;
                }
            },

            updatePageDisplay = function(table, p, completed) {
                if ( p.initializing ) { return; }
                var s, t, $out, $el, indx, len, options, output,
                c = table.config,
                namespace = c.namespace + 'pager',
                sz = parsePageSize( p, p.size, 'get' ); // don't allow dividing by zero
                if (sz === 'all') { sz = p.totalRows; }
                if (p.countChildRows) { t[ t.length ] = c.cssChildRow; }
                p.totalPages = Math.ceil( p.totalRows / sz ); // needed for "pageSize" method
                c.totalRows = p.totalRows;
                parsePageNumber( table, p );
                calcFilters(table, p);
                c.filteredRows = p.filteredRows;
                p.filteredPages = Math.ceil( p.filteredRows / sz ) || 0;
                if ( getTotalPages( table, p ) >= 0 ) {
                    t = (sz * p.page > p.filteredRows) && completed;
                    p.page = (t) ? p.pageReset || 0 : p.page;
                    p.startRow = (t) ? sz * p.page + 1 : (p.filteredRows === 0 ? 0 : sz * p.page + 1);
                    p.endRow = Math.min( p.filteredRows, p.totalRows, sz * ( p.page + 1 ) );
                    $out = p.$container.find(p.cssPageDisplay);

                    // Output param can be callback for custom rendering or string
                    if (typeof p.output === 'function') {
                        s = p.output(table, p);
                    } else {
                        output = $out
                            // get output template from data-pager-output or data-pager-output-filtered
                            .attr('data-pager-output' + (p.filteredRows < p.totalRows ? '-filtered' : '')) ||
                            p.output;
                        // form the output string (can now get a new output string from the server)
                        s = ( p.ajaxData && p.ajaxData.output ? p.ajaxData.output || output : output )
                            // {page} = one-based index; {page+#} = zero based index +/- value
                            .replace(/\{page([\-+]\d+)?\}/gi, function(m, n){
                                return p.totalPages ? p.page + (n ? parseInt(n, 10) : 1) : 0;
                            })
                            // {totalPages}, {extra}, {extra:0} (array) or {extra : key} (object)
                            .replace(/\{\w+(\s*:\s*\w+)?\}/gi, function(m){
                                var len, indx,
                                str = m.replace(/[{}\s]/g, ''),
                                extra = str.split(':'),
                                data = p.ajaxData,
                                // return zero for default page/row numbers
                                deflt = /(rows?|pages?)$/i.test(str) ? 0 : '';
                                if (/(startRow|page)/.test(extra[0]) && extra[1] === 'input') {
                                    len = ('' + (extra[0] === 'page' ? p.totalPages : p.totalRows)).length;
                                    indx = extra[0] === 'page' ? p.page + 1 : p.startRow;
                                    return '<input type="text" class="ts-' + extra[0] + '" style="max-width:' + len + 'em" value="' + indx + '"/>';
                                }
                                return extra.length > 1 && data && data[extra[0]] ? data[extra[0]][extra[1]] : p[str] || (data ? data[str] : deflt) || deflt;
                            });
                    }
                    $el = p.$container.find(p.cssGoto);
                    if ( $el.length ) {
                        t = '';
                        options = buildPageSelect( table, p );
                        len = options.length;
                        for (indx = 0; indx < len; indx++) {
                            t += '<option value="' + options[indx] + '">' + options[indx] + '</option>';
                        }
                        // innerHTML doesn't work in IE9 - http://support2.microsoft.com/kb/276228
                        $el.html(t).val( p.page + 1 );
                    }
                    if ($out.length) {
                        $out[ ($out[0].nodeName === 'INPUT') ? 'val' : 'html' ](s);
                        // rebind startRow/page inputs
                        $out.find('.ts-startRow, .ts-page').unbind('change' + namespace).bind('change' + namespace, function(){
                            var v = $(this).val(),
                            pg = $(this).hasClass('ts-startRow') ? Math.floor( v / sz ) + 1 : v;
                            c.$table.triggerHandler('pageSet' + namespace, [ pg ]);
                        });
                    }
                }
                pagerArrows( table, p );
                fixHeight(table, p);
                if (p.initialized && completed !== false) {
                    if (c.debug) {
                        console.log('Pager: Triggering pagerComplete');
                    }
                    c.$table.triggerHandler('pagerComplete', p);
                    // save pager info to storage
                    if (p.savePages && ts.storage) {
                        ts.storage(table, p.storageKey, {
                            page : p.page,
                            size : sz === p.totalRows ? 'all' : sz
                        });
                    }
                }
            },

            buildPageSelect = function( table, p ) {
                // Filter the options page number link array if it's larger than 'maxOptionSize'
                // as large page set links will slow the browser on large dom inserts
                var i, central_focus_size, focus_option_pages, insert_index, option_length, focus_length,
                pg = getTotalPages( table, p ) || 1,
                // make skip set size multiples of 5
                skip_set_size = Math.ceil( ( pg / p.maxOptionSize ) / 5 ) * 5,
                large_collection = pg > p.maxOptionSize,
                current_page = p.page + 1,
                start_page = skip_set_size,
                end_page = pg - skip_set_size,
                option_pages = [ 1 ],
                // construct default options pages array
                option_pages_start_page = (large_collection) ? skip_set_size : 1;

                for ( i = option_pages_start_page; i <= pg; ) {
                    option_pages[ option_pages.length ] = i;
                    i = i + ( large_collection ? skip_set_size : 1 );
                }
                option_pages[ option_pages.length ] = pg;
                if (large_collection) {
                    focus_option_pages = [];
                    // don't allow central focus size to be > 5 on either side of current page
                    central_focus_size = Math.max( Math.floor( p.maxOptionSize / skip_set_size ) - 1, 5 );

                    start_page = current_page - central_focus_size;
                    if (start_page < 1) { start_page = 1; }
                    end_page = current_page + central_focus_size;
                    if (end_page > pg) { end_page = pg; }
                    // construct an array to get a focus set around the current page
                    for (i = start_page; i <= end_page ; i++) {
                        focus_option_pages[ focus_option_pages.length ] = i;
                    }

                    // keep unique values
                    option_pages = $.grep(option_pages, function(value, indx) {
                        return $.inArray(value, option_pages) === indx;
                    });

                    option_length = option_pages.length;
                    focus_length = focus_option_pages.length;

                    // make sure at all option_pages aren't replaced
                    if (option_length - focus_length > skip_set_size / 2 && option_length + focus_length > p.maxOptionSize ) {
                        insert_index = Math.floor(option_length / 2) - Math.floor(focus_length / 2);
                        Array.prototype.splice.apply(option_pages, [ insert_index, focus_length ]);
                    }
                    option_pages = option_pages.concat(focus_option_pages);

                }

                // keep unique values again
                option_pages = $.grep(option_pages, function(value, indx) {
                    return $.inArray(value, option_pages) === indx;
                })
                .sort(function(a, b) { return a - b; });

                return option_pages;
            },

            fixHeight = function(table, p) {
                var d, h, bs,
                c = table.config,
                $b = c.$tbodies.eq(0);
                $b.find('tr.pagerSavedHeightSpacer').remove();
                if (p.fixedHeight && !p.isDisabled) {
                    h = $.data(table, 'pagerSavedHeight');
                    if (h) {
                        bs = 0;
                        if ($(table).css('border-spacing').split(' ').length > 1) {
                            bs = $(table).css('border-spacing').split(' ')[1].replace(/[^-\d\.]/g, '');
                        }
                        d = h - $b.height() + (bs * p.size) - bs;
                        if (
                            d > 5 && $.data(table, 'pagerLastSize') === p.size &&
                            $b.children('tr:visible').length < (p.size === 'all' ? p.totalRows : p.size)
                        ) {
                            $b.append('<tr class="pagerSavedHeightSpacer ' + c.selectorRemove.slice(1) + '" style="height:' + d + 'px;"></tr>');
                        }
                    }
                }
            },

            changeHeight = function(table, p) {
                var h,
                c = table.config,
                $b = c.$tbodies.eq(0);
                $b.find('tr.pagerSavedHeightSpacer').remove();
                if (!$b.children('tr:visible').length) {
                    $b.append('<tr class="pagerSavedHeightSpacer ' + c.selectorRemove.slice(1) + '"><td>&nbsp</td></tr>');
                }
                h = $b.children('tr').eq(0).height() * (p.size === 'all' ? p.totalRows : p.size);
                $.data(table, 'pagerSavedHeight', h);
                fixHeight(table, p);
                $.data(table, 'pagerLastSize', p.size);
            },

            hideRows = function(table, p){
                if (!p.ajaxUrl) {
                    var i,
                    lastIndex = 0,
                    c = table.config,
                    rows = c.$tbodies.eq(0).children('tr'),
                    l = rows.length,
                    sz = p.size === 'all' ? p.totalRows : p.size,
                    s = ( p.page * sz ),
                    e =  s + sz,
                    last = 0, // for cache indexing
                    j = 0; // size counter
                    p.cacheIndex = [];
                    for ( i = 0; i < l; i++ ){
                        if ( !p.regexFiltered.test(rows[i].className) ) {
                            if (j === s && rows[i].className.match(c.cssChildRow)) {
                                // hide child rows @ start of pager (if already visible)
                                rows[i].style.display = 'none';
                            } else {
                                rows[i].style.display = ( j >= s && j < e ) ? '' : 'none';
                                if (last !== j && j >= s && j < e) {
                                    p.cacheIndex[ p.cacheIndex.length ] = i;
                                    last = j;
                                }
                                // don't count child rows
                                j += rows[i].className.match(c.cssChildRow + '|' + c.selectorRemove.slice(1)) && !p.countChildRows ? 0 : 1;
                                if ( j === e && rows[i].style.display !== 'none' && rows[i].className.match(ts.css.cssHasChild) ) {
                                    lastIndex = i;
                                }
                            }
                        }
                    }
                    // add any attached child rows to last row of pager. Fixes part of issue #396
                    if ( lastIndex > 0 && rows[lastIndex].className.match(ts.css.cssHasChild) ) {
                        while ( ++lastIndex < l && rows[lastIndex].className.match(c.cssChildRow) ) {
                            rows[lastIndex].style.display = '';
                        }
                    }
                }
            },

            hideRowsSetup = function(table, p){
                p.size = parsePageSize( p, p.$container.find(p.cssPageSize).val(), 'get' );
                setPageSize( table, p.size, p );
                pagerArrows( table, p );
                if ( !p.removeRows ) {
                    hideRows(table, p);
                    $(table).bind('sortEnd filterEnd '.split(' ').join(table.config.namespace + 'pager '), function(){
                        hideRows(table, p);
                    });
                }
            },

            renderAjax = function(data, table, p, xhr, settings, exception){
                // process data
                if ( typeof p.ajaxProcessing === 'function' ) {

                    // in case nothing is returned by ajax, empty out the table; see #1032
                    // but do it before calling pager_ajaxProcessing because that function may add content
                    // directly to the table
                    table.config.$tbodies.eq(0).empty();

                    // ajaxProcessing result: [ total, rows, headers ]
                    var i, j, t, hsh, $f, $sh, $headers, $h, icon, th, d, l, rr_count, len, sz,
                    c = table.config,
                    $table = c.$table,
                    tds = '',
                    result = p.ajaxProcessing(data, table, xhr) || [ 0, [] ],
                    hl = $table.find('thead th').length;

                    // Clean up any previous error.
                    ts.showError( table );

                    if ( exception ) {
                        if (c.debug) {
                            console.error('Pager: >> Ajax Error', xhr, settings, exception);
                        }
                        ts.showError( table, xhr, settings, exception );
                        c.$tbodies.eq(0).children('tr').detach();
                        p.totalRows = 0;
                    } else {
                        // process ajax object
                        if (!$.isArray(result)) {
                            p.ajaxData = result;
                            c.totalRows = p.totalRows = result.total;
                            c.filteredRows = p.filteredRows = typeof result.filteredRows !== 'undefined' ? result.filteredRows : result.total;
                            th = result.headers;
                            d = result.rows || [];
                        } else {
                            // allow [ total, rows, headers ]  or [ rows, total, headers ]
                            t = isNaN(result[0]) && !isNaN(result[1]);
                            // ensure a zero returned row count doesn't fail the logical ||
                            rr_count = result[t ? 1 : 0];
                            p.totalRows = isNaN(rr_count) ? p.totalRows || 0 : rr_count;
                            // can't set filtered rows when returning an array
                            c.totalRows = c.filteredRows = p.filteredRows = p.totalRows;
                            // set row data to empty array if nothing found - see http://stackoverflow.com/q/30875583/145346
                            d = p.totalRows === 0 ? [] : result[t ? 0 : 1] || []; // row data
                            th = result[2]; // headers
                        }
                        l = d && d.length;
                        if (d instanceof jQuery) {
                            if (p.processAjaxOnInit) {
                                // append jQuery object
                                c.$tbodies.eq(0).empty();
                                c.$tbodies.eq(0).append(d);
                            }
                        } else if (l) {
                            // build table from array
                            for ( i = 0; i < l; i++ ) {
                                tds += '<tr>';
                                for ( j = 0; j < d[i].length; j++ ) {
                                    // build tbody cells; watch for data containing HTML markup - see #434
                                    tds += /^\s*<td/.test(d[i][j]) ? $.trim(d[i][j]) : '<td>' + d[i][j] + '</td>';
                                }
                                tds += '</tr>';
                            }
                            // add rows to first tbody
                            if (p.processAjaxOnInit) {
                                c.$tbodies.eq(0).html( tds );
                            }
                        }
                        p.processAjaxOnInit = true;
                        // update new header text
                        if ( th ) {
                            hsh = $table.hasClass('hasStickyHeaders');
                            $sh = hsh ?
                                c.widgetOptions.$sticky.children('thead:first').children('tr:not(.' + c.cssIgnoreRow + ')').children() :
                                '';
                            $f = $table.find('tfoot tr:first').children();
                            // don't change td headers (may contain pager)
                            $headers = c.$headers.filter( 'th ' );
                            len = $headers.length;
                            for ( j = 0; j < len; j++ ) {
                                $h = $headers.eq( j );
                                // add new test within the first span it finds, or just in the header
                                if ( $h.find('.' + ts.css.icon).length ) {
                                    icon = $h.find('.' + ts.css.icon).clone(true);
                                    $h.find('.' + ts.css.headerIn).html( th[j] ).append(icon);
                                    if ( hsh && $sh.length ) {
                                        icon = $sh.eq(j).find('.' + ts.css.icon).clone(true);
                                        $sh.eq(j).find('.' + ts.css.headerIn).html( th[j] ).append(icon);
                                    }
                                } else {
                                    $h.find('.' + ts.css.headerIn).html( th[j] );
                                    if (hsh && $sh.length) {
                                        // add sticky header to container just in case it contains pager controls
                                        p.$container = p.$container.add( c.widgetOptions.$sticky );
                                        $sh.eq(j).find('.' + ts.css.headerIn).html( th[j] );
                                    }
                                }
                                $f.eq(j).html( th[j] );
                            }
                        }
                    }
                    if (c.showProcessing) {
                        ts.isProcessing(table); // remove loading icon
                    }
                    sz = parsePageSize( p, p.size, 'get' );
                    // make sure last pager settings are saved, prevents multiple server side calls with
                    // the same parameters
                    p.totalPages = sz === 'all' ? 1 : Math.ceil( p.totalRows / sz );
                    p.last.totalRows = p.totalRows;
                    p.last.currentFilters = p.currentFilters;
                    p.last.sortList = (c.sortList || []).join(',');
                    updatePageDisplay(table, p, false);
                    // tablesorter core updateCache (not pager)
                    ts.updateCache( c, function(){
                        if (p.initialized) {
                            // apply widgets after table has rendered & after a delay to prevent
                            // multiple applyWidget blocking code from blocking this trigger
                            setTimeout(function(){
                                if (c.debug) {
                                    console.log('Pager: Triggering pagerChange');
                                }
                                $table.triggerHandler( 'pagerChange', p );
                                ts.applyWidget( table );
                                updatePageDisplay(table, p, true);
                            }, 0);
                        }
                    });

                }
                if (!p.initialized) {
                    pagerInitialized(table, p);
                }
            },

            getAjax = function(table, p) {
                var url = getAjaxUrl(table, p),
                $doc = $(document),
                counter,
                c = table.config,
                namespace = c.namespace + 'pager';
                if ( url !== '' ) {
                    if (c.showProcessing) {
                        ts.isProcessing(table, true); // show loading icon
                    }
                    $doc.bind('ajaxError' + namespace, function(e, xhr, settings, exception) {
                        renderAjax(null, table, p, xhr, settings, exception);
                        $doc.unbind('ajaxError' + namespace);
                    });

                    counter = ++p.ajaxCounter;

                    p.last.ajaxUrl = url; // remember processed url
                    p.ajaxObject.url = url; // from the ajaxUrl option and modified by customAjaxUrl
                    p.ajaxObject.success = function(data, status, jqxhr) {
                        // Refuse to process old ajax commands that were overwritten by new ones - see #443
                        if (counter < p.ajaxCounter){
                            return;
                        }
                        renderAjax(data, table, p, jqxhr);
                        $doc.unbind('ajaxError' + namespace);
                        if (typeof p.oldAjaxSuccess === 'function') {
                            p.oldAjaxSuccess(data);
                        }
                    };
                    if (c.debug) {
                        console.log('Pager: Ajax initialized', p.ajaxObject);
                    }
                    $.ajax(p.ajaxObject);
                }
            },

            getAjaxUrl = function(table, p) {
                var indx, len,
                c = table.config,
                url = (p.ajaxUrl) ? p.ajaxUrl
                // allow using "{page+1}" in the url string to switch to a non-zero based index
                .replace(/\{page([\-+]\d+)?\}/, function(s, n){ return p.page + (n ? parseInt(n, 10) : 0); })
                // this will pass "all" to server when size is set to "all"
                .replace(/\{size\}/g, p.size) : '',
                sortList = c.sortList,
                filterList = p.currentFilters || $(table).data('lastSearch') || [],
                sortCol = url.match(/\{\s*sort(?:List)?\s*:\s*(\w*)\s*\}/),
                filterCol = url.match(/\{\s*filter(?:List)?\s*:\s*(\w*)\s*\}/),
                arry = [];
                if (sortCol) {
                    sortCol = sortCol[1];
                    len = sortList.length;
                    for (indx = 0; indx < len; indx++) {
                        arry[ arry.length ] = sortCol + '[' + sortList[indx][0] + ']=' + sortList[indx][1];
                    }
                    // if the arry is empty, just add the col parameter... "&{sortList:col}" becomes "&col"
                    url = url.replace(/\{\s*sort(?:List)?\s*:\s*(\w*)\s*\}/g, arry.length ? arry.join('&') : sortCol );
                    arry = [];
                }
                if (filterCol) {
                    filterCol = filterCol[1];
                    len = filterList.length;
                    for (indx = 0; indx < len; indx++) {
                        if (filterList[indx]) {
                            arry[ arry.length ] = filterCol + '[' + indx + ']=' + encodeURIComponent( filterList[indx] );
                        }
                    }
                    // if the arry is empty, just add the fcol parameter... "&{filterList:fcol}" becomes "&fcol"
                    url = url.replace(/\{\s*filter(?:List)?\s*:\s*(\w*)\s*\}/g, arry.length ? arry.join('&') : filterCol );
                    p.currentFilters = filterList;
                }
                if ( typeof p.customAjaxUrl === 'function' ) {
                    url = p.customAjaxUrl(table, url);
                }
                if (c.debug) {
                    console.log('Pager: Ajax url = ' + url);
                }
                return url;
            },

            renderTable = function(table, rows, p) {
                var $tb, index, count, added,
                $t = $(table),
                c = table.config,
                f = c.$table.hasClass('hasFilters'),
                l = rows && rows.length || 0, // rows may be undefined
                e = p.size === 'all' ? p.totalRows : p.size,
                s = ( p.page * e );
                if ( l < 1 ) {
                    if (c.debug) {
                        console.warn('Pager: >> No rows for pager to render');
                    }
                    // empty table, abort!
                    return;
                }
                if ( p.page >= p.totalPages ) {
                    // lets not render the table more than once
                    moveToLastPage(table, p);
                }
                p.cacheIndex = [];
                p.isDisabled = false; // needed because sorting will change the page and re-enable the pager
                if (p.initialized) {
                    if (c.debug) {
                        console.log('Pager: Triggering pagerChange');
                    }
                    $t.triggerHandler( 'pagerChange', p );
                }
                if ( !p.removeRows ) {
                    hideRows(table, p);
                } else {
                    ts.clearTableBody(table);
                    $tb = ts.processTbody(table, c.$tbodies.eq(0), true);
                    // not filtered, start from the calculated starting point (s)
                    // if filtered, start from zero
                    index = f ? 0 : s;
                    count = f ? 0 : s;
                    added = 0;
                    while (added < e && index < rows.length) {
                        if (!f || !p.regexFiltered.test(rows[index][0].className)){
                            count++;
                            if (count > s && added <= e) {
                                added++;
                                p.cacheIndex[ p.cacheIndex.length ] = index;
                                $tb.append(rows[index]);
                            }
                        }
                        index++;
                    }
                    ts.processTbody(table, $tb, false);
                }
                updatePageDisplay(table, p);
                if (table.isUpdating) {
                    if (c.debug) {
                        console.log('Pager: Triggering updateComplete');
                    }
                    $t.triggerHandler('updateComplete', [ table, true ]);
                }
            },

            showAllRows = function(table, p) {
                var index, $controls, len;
                if ( p.ajax ) {
                    pagerArrows( table, p, true );
                } else {
                    $.data(table, 'pagerLastPage', p.page);
                    $.data(table, 'pagerLastSize', p.size);
                    p.page = 0;
                    p.size = p.totalPages;
                    p.totalPages = 1;
                    $(table)
                    .addClass('pagerDisabled')
                    .removeAttr('aria-describedby')
                    .find('tr.pagerSavedHeightSpacer').remove();
                    renderTable(table, table.config.rowsCopy, p);
                    p.isDisabled = true;
                    ts.applyWidget( table );
                    if (table.config.debug) {
                        console.log('Pager: Disabled');
                    }
                }
                // disable size selector
                $controls = p.$container.find( p.cssGoto + ',' + p.cssPageSize + ', .ts-startRow, .ts-page' );
                len = $controls.length;
                for ( index = 0; index < len; index++ ) {
                    $controls.eq( index ).addClass( p.cssDisabled )[0].disabled = true;
                    $controls[ index ].ariaDisabled = true;
                }
            },

            // updateCache if delayInit: true
            updateCache = function(table) {
                var c = table.config,
                p = c.pager;
                // tablesorter core updateCache (not pager)
                ts.updateCache( c, function(){
                    var i,
                    rows = [],
                    n = table.config.cache[0].normalized;
                    p.totalRows = n.length;
                    for (i = 0; i < p.totalRows; i++) {
                        rows[ rows.length ] = n[i][c.columns].$row;
                    }
                    c.rowsCopy = rows;
                    moveToPage(table, p, true);
                });
            },

            moveToPage = function(table, p, pageMoved) {
                if ( p.isDisabled ) { return; }
                var tmp,
                c = table.config,
                $t = $(table),
                l = p.last;
                if ( pageMoved !== false && p.initialized && ts.isEmptyObject(c.cache)) {
                    return updateCache(table);
                }
                // abort page move if the table has filters and has not been initialized
                if (p.ajax && ts.hasWidget(table, 'filter') && !c.widgetOptions.filter_initialized) { return; }
                parsePageNumber( table, p );
                calcFilters(table, p);
                // fixes issue where one currentFilter is [] and the other is ['','',''],
                // making the next if comparison think the filters are different (joined by commas). Fixes #202.
                l.currentFilters = (l.currentFilters || []).join('') === '' ? [] : l.currentFilters;
                p.currentFilters = (p.currentFilters || []).join('') === '' ? [] : p.currentFilters;
                // don't allow rendering multiple times on the same page/size/totalRows/filters/sorts
                if ( l.page === p.page && l.size === p.size && l.totalRows === p.totalRows &&
                (l.currentFilters || []).join(',') === (p.currentFilters || []).join(',') &&
                // check for ajax url changes see #730
                (l.ajaxUrl || '') === (p.ajaxObject.url || '') &&
                // & ajax url option changes (dynamically add/remove/rename sort & filter parameters)
                (l.optAjaxUrl || '') === (p.ajaxUrl || '') &&
                l.sortList === (c.sortList || []).join(',') ) { return; }
                if (c.debug) {
                    console.log('Pager: Changing to page ' + p.page);
                }
                p.last = {
                    page : p.page,
                    size : p.size,
                    // fixes #408; modify sortList otherwise it auto-updates
                    sortList : (c.sortList || []).join(','),
                    totalRows : p.totalRows,
                    currentFilters : p.currentFilters || [],
                    ajaxUrl : p.ajaxObject.url || '',
                    optAjaxUrl : p.ajaxUrl || ''
                };
                if (p.ajax) {
                    if ( !p.processAjaxOnInit && !ts.isEmptyObject(p.initialRows) ) {
                        p.processAjaxOnInit = true;
                        tmp = p.initialRows;
                        p.totalRows = typeof tmp.total !== 'undefined' ? tmp.total :
                        ( c.debug ? console.error('Pager: no initial total page set!') || 0 : 0 );
                        p.filteredRows = typeof tmp.filtered !== 'undefined' ? tmp.filtered :
                        ( c.debug ? console.error('Pager: no initial filtered page set!') || 0 : 0 );
                        pagerInitialized( table, p );
                    } else {
                        getAjax(table, p);
                    }
                } else if (!p.ajax) {
                    renderTable(table, c.rowsCopy, p);
                }
                $.data(table, 'pagerLastPage', p.page);
                if (p.initialized && pageMoved !== false) {
                    if (c.debug) {
                        console.log('Pager: Triggering pageMoved');
                    }
                    $t.triggerHandler('pageMoved', p);
                    ts.applyWidget( table );
                    if (table.isUpdating) {
                        if (c.debug) {
                            console.log('Pager: Triggering updateComplete');
                        }
                        $t.triggerHandler('updateComplete', [ table, true ]);
                    }
                }
            },

            getTotalPages = function( table, p ) {
                return ts.hasWidget( table, 'filter' ) ?
                    Math.min( p.totalPages, p.filteredPages ) :
                    p.totalPages;
            },

            parsePageNumber = function( table, p ) {
                var min = getTotalPages( table, p ) - 1;
                p.page = parseInt( p.page, 10 );
                if ( p.page < 0 || isNaN( p.page ) ) { p.page = 0; }
                if ( p.page > min && min >= 0 ) { p.page = min; }
                return p.page;
            },

            // set to either set or get value
            parsePageSize = function( p, size, mode ) {
                var s = parseInt( size, 10 ) || p.size || p.settings.size || 10;
                if (p.initialized && (/all/i.test( s + ' ' + size ) || s === p.totalRows)) {
                    // Fixing #1364 & #1366
                    return p.$container.find(p.cssPageSize + ' option[value="all"]').length ?
                        'all' : p.totalRows;
                }
                // "get" to get `p.size` or "set" to set `pageSize.val()`
                return mode === 'get' ? s : p.size;
            },

            setPageSize = function(table, size, p) {
                // "all" size is only returned if an "all" option exists - fixes #1366
                p.size = parsePageSize( p, size, 'get' );
                p.$container.find( p.cssPageSize ).val( p.size );
                $.data(table, 'pagerLastPage', parsePageNumber( table, p ) );
                $.data(table, 'pagerLastSize', p.size);
                p.totalPages = p.size === 'all' ? 1 : Math.ceil( p.totalRows / p.size );
                p.filteredPages = p.size === 'all' ? 1 : Math.ceil( p.filteredRows / p.size );
            },

            moveToFirstPage = function(table, p) {
                p.page = 0;
                moveToPage(table, p);
            },

            moveToLastPage = function(table, p) {
                p.page = getTotalPages( table, p ) - 1;
                moveToPage(table, p);
            },

            moveToNextPage = function(table, p) {
                p.page++;
                var last = getTotalPages( table, p ) - 1;
                if ( p.page >= last ) {
                    p.page = last;
                }
                moveToPage(table, p);
            },

            moveToPrevPage = function(table, p) {
                p.page--;
                if ( p.page <= 0 ) {
                    p.page = 0;
                }
                moveToPage(table, p);
            },

            pagerInitialized = function(table, p) {
                p.initialized = true;
                p.initializing = false;
                if (table.config.debug) {
                    console.log('Pager: Triggering pagerInitialized');
                }
                $(table).triggerHandler( 'pagerInitialized', p );
                ts.applyWidget( table );
                updatePageDisplay(table, p);
            },

            resetState = function(table, p) {
                var c = table.config;
                c.pager = $.extend( true, {}, $.tablesorterPager.defaults, p.settings );
                init(table, p.settings);
            },

            destroyPager = function(table, p) {
                var c = table.config,
                namespace = c.namespace + 'pager',
                ctrls = [ p.cssFirst, p.cssPrev, p.cssNext, p.cssLast, p.cssGoto, p.cssPageSize ].join( ',' );
                showAllRows(table, p);
                p.$container
                // hide pager controls
                .hide()
                // unbind
                .find( ctrls )
                .unbind( namespace );
                c.appender = null; // remove pager appender function
                c.$table.unbind( namespace );
                if (ts.storage) {
                    ts.storage(table, p.storageKey, '');
                }
                delete c.pager;
                delete c.rowsCopy;
            },

            enablePager = function(table, p, triggered) {
                var info, size, $el,
                c = table.config;
                p.$container.find(p.cssGoto + ',' + p.cssPageSize + ',.ts-startRow, .ts-page')
                .removeClass(p.cssDisabled)
                .removeAttr('disabled')
                .each(function(){
                    this.ariaDisabled = false;
                });
                p.isDisabled = false;
                p.page = $.data(table, 'pagerLastPage') || p.page || 0;
                $el = p.$container.find(p.cssPageSize);
                size = $el.find('option[selected]').val();
                p.size = $.data(table, 'pagerLastSize') || parsePageSize( p, size, 'get' );
                p.totalPages = p.size === 'all' ? 1 : Math.ceil( getTotalPages( table, p ) / p.size );
                setPageSize(table, p.size, p); // set page size
                // if table id exists, include page display with aria info
                if ( table.id && !c.$table.attr( 'aria-describedby' ) ) {
                    $el = p.$container.find( p.cssPageDisplay );
                    info = $el.attr( 'id' );
                    if ( !info ) {
                        // only add pageDisplay id if it doesn't exist - see #1288
                        info = table.id + '_pager_info';
                        $el.attr( 'id', info );
                    }
                    c.$table.attr( 'aria-describedby', info );
                }
                changeHeight(table, p);
                if ( triggered ) {
                    // tablesorter core update table
                    ts.update( c );
                    setPageSize(table, p.size, p);
                    moveToPage(table, p);
                    hideRowsSetup(table, p);
                    if (c.debug) {
                        console.log('Pager: Enabled');
                    }
                }
            },

            init = function(table, settings) {
                var t, ctrls, fxn, size, $el,
                c = table.config,
                wo = c.widgetOptions,
                p = c.pager = $.extend( true, {}, $.tablesorterPager.defaults, settings ),
                $t = c.$table,
                namespace = c.namespace + 'pager',
                // added in case the pager is reinitialized after being destroyed.
                pager = p.$container = $(p.container).addClass('tablesorter-pager').show();
                // save a copy of the original settings
                p.settings = $.extend( true, {}, $.tablesorterPager.defaults, settings );
                if (c.debug) {
                    console.log('Pager: Initializing');
                }
                p.oldAjaxSuccess = p.oldAjaxSuccess || p.ajaxObject.success;
                c.appender = $this.appender;
                p.initializing = true;
                if (p.savePages && ts.storage) {
                    t = ts.storage(table, p.storageKey) || {}; // fixes #387
                    p.page = isNaN(t.page) ? p.page : t.page;
                    p.size = t.size === 'all' ? t.size : ( isNaN( t.size ) ? p.size : t.size ) || p.setSize || 10;
                    setPageSize(table, p.size, p);
                }
                // skipped rows
                p.regexRows = new RegExp('(' + (wo.filter_filteredRow || 'filtered') + '|' + c.selectorRemove.slice(1) + '|' + c.cssChildRow + ')');
                p.regexFiltered = new RegExp(wo.filter_filteredRow || 'filtered');

                $t
                // .unbind( namespace ) adding in jQuery 1.4.3 ( I think )
                .unbind( pagerEvents.split(' ').join(namespace + ' ').replace(/\s+/g, ' ') )
                .bind('filterInit filterStart '.split(' ').join(namespace + ' '), function(e, filters) {
                    p.currentFilters = $.isArray(filters) ? filters : c.$table.data('lastSearch');
                    var filtersEqual;
                    if (p.ajax && e.type === 'filterInit') {
                        // ensure pager ajax is called after filter widget has initialized
                        return moveToPage( table, p, false );
                    }
                    if (ts.filter.equalFilters) {
                        filtersEqual = ts.filter.equalFilters(c, c.lastSearch, p.currentFilters);
                    } else {
                        // will miss filter changes of the same value in a different column, see #1363
                        filtersEqual = (c.lastSearch || []).join('') !== (p.currentFilters || []).join('');
                    }
                    // don't change page if filters are the same (pager updating, etc)
                    if (e.type === 'filterStart' && p.pageReset !== false && !filtersEqual) {
                        p.page = p.pageReset; // fixes #456 & #565
                    }
                })
                // update pager after filter widget completes
                .bind('filterEnd sortEnd '.split(' ').join(namespace + ' '), function() {
                    p.currentFilters = c.$table.data('lastSearch');
                    if (p.initialized || p.initializing) {
                        if (c.delayInit && c.rowsCopy && c.rowsCopy.length === 0) {
                            // make sure we have a copy of all table rows once the cache has been built
                            updateCache(table);
                        }
                        updatePageDisplay(table, p, false);
                        moveToPage(table, p, false);
                        ts.applyWidget( table );
                    }
                })
                .bind('disablePager' + namespace, function(e){
                    e.stopPropagation();
                    showAllRows(table, p);
                })
                .bind('enablePager' + namespace, function(e){
                    e.stopPropagation();
                    enablePager(table, p, true);
                })
                .bind('destroyPager' + namespace, function(e){
                    e.stopPropagation();
                    destroyPager(table, p);
                })
                .bind('resetToLoadState' + namespace, function(e){
                    e.stopPropagation();
                    resetState(table, p);
                })
                .bind('updateComplete' + namespace, function(e, table, triggered){
                    e.stopPropagation();
                    // table can be unintentionally undefined in tablesorter v2.17.7 and earlier
                    // don't recalculate total rows/pages if using ajax
                    if ( !table || triggered || p.ajax ) { return; }
                    var $rows = c.$tbodies.eq(0).children('tr').not(c.selectorRemove);
                    p.totalRows = $rows.length - ( p.countChildRows ? 0 : $rows.filter('.' + c.cssChildRow).length );
                    p.totalPages = p.size === 'all' ? 1 : Math.ceil( p.totalRows / p.size );
                    if ($rows.length && c.rowsCopy && c.rowsCopy.length === 0) {
                        // make a copy of all table rows once the cache has been built
                        updateCache(table);
                    }
                    if ( p.page >= p.totalPages ) {
                        moveToLastPage(table, p);
                    }
                    hideRows(table, p);
                    changeHeight(table, p);
                    updatePageDisplay(table, p, true);
                })
                .bind('pageSize refreshComplete '.split(' ').join(namespace + ' '), function(e, size){
                    e.stopPropagation();
                    setPageSize(table, parsePageSize( p, size, 'get' ), p);
                    moveToPage(table, p);
                    hideRows(table, p);
                    updatePageDisplay(table, p, false);
                })
                .bind('pageSet pagerUpdate '.split(' ').join(namespace + ' '), function(e, num){
                    e.stopPropagation();
                    // force pager refresh
                    if (e.type === 'pagerUpdate') {
                        num = typeof num === 'undefined' ? p.page + 1 : num;
                        p.last.page = true;
                    }
                    p.page = (parseInt(num, 10) || 1) - 1;
                    moveToPage(table, p, true);
                    updatePageDisplay(table, p, false);
                })
                .bind('pageAndSize' + namespace, function(e, page, size){
                    e.stopPropagation();
                    p.page = (parseInt(page, 10) || 1) - 1;
                    setPageSize(table, parsePageSize( p, size, 'get' ), p);
                    moveToPage(table, p, true);
                    hideRows(table, p);
                    updatePageDisplay(table, p, false);
                });

                // clicked controls
                ctrls = [ p.cssFirst, p.cssPrev, p.cssNext, p.cssLast ];
                fxn = [ moveToFirstPage, moveToPrevPage, moveToNextPage, moveToLastPage ];
                if (c.debug && !pager.length) {
                    console.warn('Pager: >> Container not found');
                }
                pager.find(ctrls.join(','))
                .attr('tabindex', 0)
                .unbind('click' + namespace)
                .bind('click' + namespace, function(e){
                    e.stopPropagation();
                    var i, $t = $(this), l = ctrls.length;
                    if ( !$t.hasClass(p.cssDisabled) ) {
                        for (i = 0; i < l; i++) {
                            if ($t.is(ctrls[i])) {
                                fxn[i](table, p);
                                break;
                            }
                        }
                    }
                });

                // goto selector
                $el = pager.find(p.cssGoto);
                if ( $el.length ) {
                    $el
                    .unbind('change' + namespace)
                    .bind('change' + namespace, function(){
                        p.page = $(this).val() - 1;
                        moveToPage(table, p, true);
                        updatePageDisplay(table, p, false);
                    });
                } else if (c.debug) {
                    console.warn('Pager: >> Goto selector not found');
                }
                // page size selector
                $el = pager.find(p.cssPageSize);
                if ( $el.length ) {
                    // setting an option as selected appears to cause issues with initial page size
                    $el.find('option').removeAttr('selected');
                    $el.unbind('change' + namespace).bind('change' + namespace, function() {
                        if ( !$(this).hasClass(p.cssDisabled) ) {
                            var size = $(this).val();
                            // in case there are more than one pager
                            setPageSize(table, size, p);
                            moveToPage(table, p);
                            changeHeight(table, p);
                        }
                        return false;
                    });
                } else if (c.debug) {
                    console.warn('Pager: >> Size selector not found');
                }

                // clear initialized flag
                p.initialized = false;
                // before initialization event
                $t.triggerHandler('pagerBeforeInitialized', p);

                enablePager(table, p, false);
                if ( typeof p.ajaxUrl === 'string' ) {
                    // ajax pager; interact with database
                    p.ajax = true;
                    // When filtering with ajax, allow only custom filtering function, disable default
                    // filtering since it will be done server side.
                    c.widgetOptions.filter_serversideFiltering = true;
                    c.serverSideSorting = true;
                    moveToPage(table, p);
                } else {
                    p.ajax = false;
                    // Regular pager; all rows stored in memory
                    ts.appendCache( c, true ); // true = don't apply widgets
                    hideRowsSetup(table, p);
                }

                // pager initialized
                if (!p.ajax && !p.initialized) {
                    p.initializing = false;
                    p.initialized = true;
                    // update page size on init
                    setPageSize(table, p.size, p);
                    moveToPage(table, p);
                    if (c.debug) {
                        console.log('Pager: Triggering pagerInitialized');
                    }
                    c.$table.triggerHandler( 'pagerInitialized', p );
                    if ( !( c.widgetOptions.filter_initialized && ts.hasWidget(table, 'filter') ) ) {
                        updatePageDisplay(table, p, false);
                    }
                }

                // make the hasWidget function think that the pager widget is being used
                c.widgetInit.pager = true;
            };

            $this.appender = function(table, rows) {
                var c = table.config,
                p = c.pager;
                if ( !p.ajax ) {
                    c.rowsCopy = rows;
                    p.totalRows = p.countChildRows ? c.$tbodies.eq(0).children('tr').length : rows.length;
                    p.size = $.data(table, 'pagerLastSize') || p.size || p.settings.size || 10;
                    p.totalPages = p.size === 'all' ? 1 : Math.ceil( p.totalRows / p.size );
                    renderTable(table, rows, p);
                    // update display here in case all rows are removed
                    updatePageDisplay(table, p, false);
                }
            };

            $this.construct = function(settings) {
                return this.each(function() {
                    // check if tablesorter has initialized
                    if (!(this.config && this.hasInitialized)) { return; }
                    init(this, settings);
                });
            };

        }()
    });

    // see #486
    ts.showError = function( table, xhr, settings, exception ) {
        var $row,
            $table = $( table ),
            c = $table[0].config,
            wo = c && c.widgetOptions,
            errorRow = c.pager && c.pager.cssErrorRow ||
            wo && wo.pager_css && wo.pager_css.errorRow ||
            'tablesorter-errorRow',
            typ = typeof xhr,
            valid = true,
            message = '',
            removeRow = function(){
                c.$table.find( 'thead' ).find( c.selectorRemove ).remove();
            };

        if ( !$table.length ) {
            console.error('tablesorter showError: no table parameter passed');
            return;
        }

        // ajaxError callback for plugin or widget - see #992
        if ( typeof c.pager.ajaxError === 'function' ) {
            valid = c.pager.ajaxError( c, xhr, settings, exception );
            if ( valid === false ) {
                return removeRow();
            } else {
                message = valid;
            }
        } else if ( typeof wo.pager_ajaxError === 'function' ) {
            valid = wo.pager_ajaxError( c, xhr, settings, exception );
            if ( valid === false ) {
                return removeRow();
            } else {
                message = valid;
            }
        }

        if ( message === '' ) {
            if ( typ === 'object' ) {
                message =
                    xhr.status === 0 ? 'Not connected, verify Network' :
                    xhr.status === 404 ? 'Requested page not found [404]' :
                    xhr.status === 500 ? 'Internal Server Error [500]' :
                    exception === 'parsererror' ? 'Requested JSON parse failed' :
                    exception === 'timeout' ? 'Time out error' :
                    exception === 'abort' ? 'Ajax Request aborted' :
                    'Uncaught error: ' + xhr.statusText + ' [' + xhr.status + ']';
            } else if ( typ === 'string'  ) {
                // keep backward compatibility (external usage just passes a message string)
                message = xhr;
            } else {
                // remove all error rows
                return removeRow();
            }
        }

        // allow message to include entire row HTML!
        $row = ( /tr\>/.test(message) ? $(message) : $('<tr><td colspan="' + c.columns + '">' + message + '</td></tr>') )
            .click( function() {
                $( this ).remove();
            })
            // add error row to thead instead of tbody, or clicking on the header will result in a parser error
            .appendTo( c.$table.find( 'thead:first' ) )
            .addClass( errorRow + ' ' + c.selectorRemove.slice(1) )
            .attr({
                role : 'alert',
                'aria-live' : 'assertive'
            });

    };

    // extend plugin scope
    $.fn.extend({
        tablesorterPager: $.tablesorterPager.construct
    });

})(jQuery);