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ClockworkSquirrel / [NCS] Refresh Course Section

// ==UserScript==
// @name         [NCS] Refresh Course Section
// @description  Refresh course content without refreshing full page.
// @version      1.0.2
// @author       ClockworkSquirrel
// @match        http*://vle.newcollege.ac.uk/course/view.php?id=*
// @require      https://code.jquery.com/jquery-3.1.1.min.js
// @run-at       document-body
// @grant        none
// ==/UserScript==

var refreshTimer = 5; // in seconds

(function() {
	'use strict';

	$(document).ready(function(){
		var pageTitle = $(document.head).find("title").html();

		function reloadContents(){
			$(document.head).find("title").html("Reloading content...");

			$.get(location.href, function(data){
				data = $(data);

				var newContent = data.find("div.course-content:eq(0)");
				$("div.course-content:eq(0)").html(newContent.html()); //.slideDown();
				$(document.head).find("title").html(pageTitle);
			}).fail(function(){
				location.reload();
			});
		}

		$("section#region-main div.course-content:eq(0) li").each(function(){
			$(this).contextmenu(function(evt){
				var thisContent = $(this);
				var thisId = $(this).attr("id");
				evt.preventDefault();

				$(document.head).find("title").html("Reloading content...");
				// thisContent.html("<div class='content'><h3>Refreshing...</h3></div>").slideUp();
				// thisContent.slideUp();

				$.get(location.href, function(data){
					data = $(data);

					var newContent = data.find("li#"+thisId+":eq(0)");
					thisContent.html(newContent.html()); //.slideDown();
					$(document.head).find("title").html(pageTitle);
				}).fail(function(){
					location.reload();
				});
			});
		});

		$("footer#footer div:eq(0)").slideUp();
		setInterval(reloadContents, refreshTimer*1000);
	});
})();