mirror of
https://github.com/Mottie/tablesorter.git
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387 lines
12 KiB
JavaScript
387 lines
12 KiB
JavaScript
/*
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* tablesorter pager plugin
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* updated 3/8/2012
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*/
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(function($) {
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$.extend({tablesorterPager: new function() {
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this.defaults = {
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// target the pager markup
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container: null,
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// use this format: "http:/mydatabase.com?page={page}&size={size}"
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// where {page} is replaced by the page number and {size} is replaced by the number of records to show
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ajaxUrl: null,
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// process ajax so that the data object is returned along with the total number of rows
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ajaxProcessing: function(ajax){ return [ [{ "key" : "value" }], 100 ]; },
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// output default: '{page}/{totalPages}'
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output: '{startRow} to {endRow} of {totalRows} rows', // '{page}/{totalPages}'
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// apply disabled classname to the pager arrows when the rows at either extreme is visible
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updateArrows: true,
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// starting page of the pager (zero based index)
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page: 0,
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// Number of visible rows
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size: 10,
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// if true, the table will remain the same height no matter how many records are displayed. The space is made up by an empty
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// table row set to a height to compensate; default is false
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fixedHeight: false,
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// remove rows from the table to speed up the sort of large tables.
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// setting this to false, only hides the non-visible rows; needed if you plan to add/remove rows with the pager enabled.
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removeRows: true, // removing rows in larger tables speeds up the sort
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// css class names of pager arrows
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cssNext: '.next', // next page arrow
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cssPrev: '.prev', // previous page arrow
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cssFirst: '.first', // first page arrow
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cssLast: '.last', // last page arrow
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cssPageDisplay: '.pagedisplay', // location of where the "output" is displayed
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cssPageSize: '.pagesize', // page size selector - select dropdown that sets the "size" option
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// class added to arrows when at the extremes (i.e. prev/first arrows are "disabled" when on the first page)
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cssDisabled: 'disabled', // Note there is no period "." in front of this class name
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// stuff not set by the user
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totalRows: 0,
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totalPages: 0
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};
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var $this = this,
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// hide arrows at extremes
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pagerArrows = function(c, disable) {
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var a = 'addClass', r = 'removeClass',
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d = c.cssDisabled, dis = !!disable;
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if (c.updateArrows) {
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c.container[(c.totalRows < c.size) ? a : r](d);
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$(c.cssFirst + ',' + c.cssPrev, c.container)[(dis || c.page === 0) ? a : r](d);
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$(c.cssNext + ',' + c.cssLast, c.container)[(dis || c.page === c.totalPages - 1) ? a : r](d);
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}
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},
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updatePageDisplay = function(table, c) {
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c.startRow = c.size * (c.page) + 1;
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c.endRow = Math.min(c.totalRows, c.size * (c.page+1));
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var out = $(c.cssPageDisplay, c.container),
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// form the output string
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s = c.output.replace(/\{(page|totalPages|startRow|endRow|totalRows)\}/gi, function(m){
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return {
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'{page}' : c.page + 1,
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'{totalPages}' : c.totalPages,
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'{startRow}' : c.startRow,
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'{endRow}' : c.endRow,
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'{totalRows}' : c.totalRows
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}[m];
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});
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if (out[0]) {
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out[ (out[0].tagName === 'INPUT') ? 'val' : 'html' ](s);
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}
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pagerArrows(c);
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$(table).trigger('pagerComplete', c);
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},
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fixHeight = function(table, c) {
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var d, h, $b = $(table.tBodies[0]);
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if (c.fixedHeight) {
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$b.find('tr.pagerSavedHeightSpacer').remove();
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h = $.data(table, 'pagerSavedHeight');
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if (h) {
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d = h - $b.height();
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if (d > 5 && $.data(table, 'pagerLastSize') === c.size && $b.find('tr:visible').length < c.size) {
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$b.append('<tr class="pagerSavedHeightSpacer remove-me" style="height:' + d + 'px;"></tr>');
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}
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}
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}
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},
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changeHeight = function(table, c) {
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var $b = $(table.tBodies[0]);
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$b.find('tr.pagerSavedHeightSpacer').remove();
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$.data(table, 'pagerSavedHeight', $b.height());
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fixHeight(table, c);
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$.data(table, 'pagerLastSize', c.size);
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},
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hideRows = function(table, c){
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var i, rows = $('tr:not(.' + table.config.cssChildRow + ')', table.tBodies[0]),
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l = rows.length,
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s = (c.page * c.size),
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e = (s + c.size);
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if (e > l) { e = l; }
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for (i = 0; i < l; i++){
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rows[i].style.display = (i >= s && i < e) ? '' : 'none';
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}
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},
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hideRowsSetup = function(table, c){
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c.size = parseInt($(c.cssPageSize, c.container).val(), 10);
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$.data(table, 'pagerLastSize', c.size);
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pagerArrows(c);
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if (!c.removeRows) {
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hideRows(table, c);
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$(table).bind('sortEnd.pager', function(){
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hideRows(table, c);
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$(table).trigger("applyWidgets");
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});
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}
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},
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getAjax = function(table, c){
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var i, $load, $t = $(table), $b = $(table.tBodies[0]),
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url = c.ajaxUrl.replace(/\{page\}/g, c.page).replace(/\{size\}/g, c.size);
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if (url !== '') {
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// loading icon
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$load = $('<div/>', {
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id : 'tablesorterPagerLoading',
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width : $t.outerWidth(true),
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height: $t.outerHeight(true)
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});
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$t.before($load);
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$.getJSON(url, function(data) {
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// process data
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if (typeof(c.ajaxProcessing) === "function") {
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var result = c.ajaxProcessing(data), d = result[0], l = d.length,
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i, k, th = [], tds = '', tf = '', hsh = $(table).addClass('hasStickyHeaders'),
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sh = '.' + ((table.config.widgetOptions && table.config.widgetOptions.stickyHeaders) || 'tablesorter-stickyheader'),
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$sh = $t.find(sh);
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for ( i=0; i < l; i++ ) {
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tds += '<tr>';
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for (k in d[i]) {
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if (typeof(k) === "string") {
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// get new header text
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if ( i === 0 ) { th.push(k); }
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// build tbody cells
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tds += '<td>' + d[i][k] + '</td>';
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}
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}
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tds += '</tr>';
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}
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$t.find('thead tr.tablesorter-header th').each(function(j){
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var $t = $(this),
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// add new test within the first span it finds, or just in the header
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tar = ($t.find('span').length) ? $t.find('span:first') : $t;
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tar.html(th[j]);
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// update sticky headers
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if (hsh && $sh.length){
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tar = $sh.find('th').eq(j);
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tar = (tar.find('span').length) ? tar.find('span:first') : tar;
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tar.html(th[j]);
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}
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tf += '<th>' + th[j] + '</th>';
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});
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$t.find('tfoot').html('<tr>' + tf + '</tr>');
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$b.html(tds); // add tbody
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$load.remove(); // remove loading icon
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$t.trigger('update');
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c.totalRows = result[1];
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c.totalPages = Math.ceil(c.totalRows / c.size);
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updatePageDisplay(table, c);
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fixHeight(table, c);
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$t.trigger('pagerChange', c);
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}
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});
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}
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},
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renderTable = function(table, rows, c) {
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var i, j, o,
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tableBody = $(table.tBodies[0]),
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l = rows.length,
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s = (c.page * c.size),
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e = (s + c.size);
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if (l < 1) { return; } // empty table, abort!
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$(table).trigger('pagerChange', c);
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if (!c.removeRows) {
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hideRows(table, c);
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} else {
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if (e > rows.length ) {
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e = rows.length;
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}
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$(table.tBodies[0]).empty();
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for (i = s; i < e; i++) {
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o = rows[i];
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l = o.length;
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for (j = 0; j < l; j++) {
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tableBody[0].appendChild(o[j]);
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}
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}
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}
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$(table).trigger("applyWidgets");
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if ( c.page >= c.totalPages ) {
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moveToLastPage(table, c);
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}
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updatePageDisplay(table, c);
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if (!c.isDisabled) { fixHeight(table, c); }
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},
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showAllRows = function(table, c){
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if (c.ajax) {
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pagerArrows(c, true);
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} else {
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c.isDisabled = true;
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$.data(table, 'pagerLastPage', c.page);
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$.data(table, 'pagerLastSize', c.size);
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c.page = 0;
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c.size = c.totalRows;
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c.totalPages = 1;
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$('tr.pagerSavedHeightSpacer', table.tBodies[0]).remove();
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renderTable(table, table.config.rowsCopy, c);
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}
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// disable size selector
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$(c.cssPageSize, c.container).addClass(c.cssDisabled)[0].disabled = true;
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},
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moveToPage = function(table, c) {
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if (c.isDisabled) { return; }
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if (c.page < 0 || c.page > (c.totalPages-1)) {
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c.page = 0;
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}
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$.data(table, 'pagerLastPage', c.page);
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if (c.ajax) {
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getAjax(table, c);
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} else {
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renderTable(table, table.config.rowsCopy, c);
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}
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},
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setPageSize = function(table, size, c) {
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c.size = size;
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$.data(table, 'pagerLastPage', c.page);
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$.data(table, 'pagerLastSize', c.size);
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c.totalPages = Math.ceil(c.totalRows / c.size);
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moveToPage(table, c);
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},
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moveToFirstPage = function(table, c) {
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c.page = 0;
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moveToPage(table, c);
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},
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moveToLastPage = function(table, c) {
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c.page = (c.totalPages-1);
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moveToPage(table, c);
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},
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moveToNextPage = function(table, c) {
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c.page++;
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if (c.page >= (c.totalPages-1)) {
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c.page = (c.totalPages-1);
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}
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moveToPage(table, c);
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},
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moveToPrevPage = function(table, c) {
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c.page--;
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if (c.page <= 0) {
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c.page = 0;
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}
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moveToPage(table, c);
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},
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destroyPager = function(table, c){
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showAllRows(table, c);
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c.container.hide(); // hide pager
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table.config.appender = null; // remove pager appender function
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$(table).unbind('destroy.pager sortEnd.pager enable.pager disable.pager');
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},
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enablePager = function(table, c, triggered){
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var p = $(c.cssPageSize, c.container).removeClass(c.cssDisabled).removeAttr('disabled');
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c.isDisabled = false;
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c.page = $.data(table, 'pagerLastPage') || 0;
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c.size = $.data(table, 'pagerLastSize') || parseInt(p.val(), 10);
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c.totalPages = Math.ceil(c.totalRows / c.size);
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if (triggered) {
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$('table').trigger('update');
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setPageSize(table, c.size, c);
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hideRowsSetup(table, c);
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fixHeight(table, c);
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}
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};
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$this.appender = function(table, rows) {
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var c = table.config.pager;
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if (!c.ajax) {
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table.config.rowsCopy = rows;
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c.totalRows = rows.length;
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c.size = $.data(table, 'pagerLastSize') || c.size;
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c.totalPages = Math.ceil(c.totalRows / c.size);
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renderTable(table, rows, c);
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}
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};
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$this.construct = function(settings) {
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return this.each(function() {
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var config = this.config,
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c = config.pager = $.extend({}, $.tablesorterPager.defaults, settings),
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table = this,
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$t = $(table),
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pager = $(c.container).show(); // added in case the pager is reinitialized after being destroyed.
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config.appender = $this.appender;
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enablePager(table, c, false);
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if (typeof(c.ajaxUrl) === 'string') {
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// ajax pager; interact with database
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c.ajax = true;
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getAjax(table, c);
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} else {
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c.ajax = false;
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// Regular pager; all rows stored in memory
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$(this).trigger("appendCache");
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hideRowsSetup(table, c);
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}
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$(c.cssFirst,pager).unbind('click.pager').bind('click.pager', function() {
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if (!$(this).hasClass(c.cssDisabled)) { moveToFirstPage(table, c); }
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return false;
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});
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$(c.cssNext,pager).unbind('click.pager').bind('click.pager', function() {
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if (!$(this).hasClass(c.cssDisabled)) { moveToNextPage(table, c); }
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return false;
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});
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$(c.cssPrev,pager).unbind('click.pager').bind('click.pager', function() {
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if (!$(this).hasClass(c.cssDisabled)) { moveToPrevPage(table, c); }
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return false;
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});
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$(c.cssLast,pager).unbind('click.pager').bind('click.pager', function() {
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if (!$(this).hasClass(c.cssDisabled)) { moveToLastPage(table, c); }
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return false;
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});
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$(c.cssPageSize,pager).unbind('change.pager').bind('change.pager', function() {
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$(c.cssPageSize,pager).val( $(this).val() ); // in case there are more than one pagers
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if (!$(this).hasClass(c.cssDisabled)) {
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setPageSize(table, parseInt($(this).val(), 10), c);
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changeHeight(table, c);
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}
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return false;
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});
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$t
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.unbind('disable.pager enable.pager destroy.pager')
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.bind('disable.pager', function(){
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showAllRows(table, c);
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})
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.bind('enable.pager', function(){
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enablePager(table, c, true);
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})
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.bind('destroy.pager', function(){
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destroyPager(table, c);
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});
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});
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};
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}
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});
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// extend plugin scope
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$.fn.extend({
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tablesorterPager: $.tablesorterPager.construct
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});
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})(jQuery); |