Added repeatheaders widget

js/widgets/widget-repeatheaders.js

@@ -0,0 +1,50 @@
+/*! tablesorter repeatHeaders widget - updated 4/12/2013
+* Requires tablesorter v2.8+ and jQuery 1.7+
+* Original by Christian Bach from the example-widgets.html demo
+*/
+/*global jQuery: false */
+;(function($){
+	"use strict";
+
+	$.tablesorter.addWidget({
+		id: "repeatHeaders",
+		priority: 10,
+		options: {
+			rowsToSkip : 4
+		},
+		// format is called on init and when a sorting has finished
+		format: function(table, c, wo) {
+			var h = '', i, $tr, l, skip;
+			// cache and collect all TH headers
+			if (!wo.repeatHeaders) {
+				h = '<tr class="repeated-header remove-me">';
+				$.each(c.headerContent, function(i,t) {
+					h += '<th>' + t + '</th>';
+				});
+				// "remove-me" class was added in case the table needs to be updated, the "remove-me" rows will be
+				// removed prior to the update to prevent including the rows in the update - see "selectorRemove" option
+				wo.repeatHeaders = h + '</tr>';
+			}
+
+			// number of rows to skip
+			skip = wo && wo.rowsToSkip || 4;
+
+			// remove appended headers by classname
+			c.$table.find("tr.repeated-header").remove();
+			$tr = c.$tbodies.find('tr');
+			l = $tr.length;
+			// loop all tr elements and insert a copy of the "headers"
+			for (i = skip; i < l; i += skip) {
+				// insert a copy of the table head every X rows
+				$tr.eq(i).before(wo.repeatHeaders);
+			}
+		},
+		// this remove function is called when using the refreshWidgets method or when destroying the tablesorter plugin
+		// this function only applies to tablesorter v2.4+
+		remove: function(table, c){
+			c.$table.find("tr.repeated-header").remove();
+		}
+
+	});
+
+})(jQuery);