ukko: javascript major refactor

templates/themes/ukko/ukko.js

@@ -1,20 +1,30 @@
+(function(){
+
 var cache = new Array(),
 	thread = false,
 	loading = false;
 $(document).ready(function() {
+	$('.pages').hide();
 	$(window).on('scroll', function() {
-		if($(window).scrollTop() + $(window).height() + 100 > $(document).height() && !loading && overflow.length > 0) {
+		if (overflow.length == 0) {
+			$('.pages').show().html(_("No more threads to display"));
+		}
+		while($(window).scrollTop() + $(window).height() + 500 > $(document).height() && !loading && overflow.length > 0) {
 			var page = '../' + overflow[0].board + '/' + overflow[0].page;
-			if($.inArray(page, cache) != -1) {
-				thread = $('div#thread_' + overflow[0].id);
-				if(thread.length > 0) {
-					thread.prepend('<h2><a href="/' + overflow[0].board + '/">/' + overflow[0].board + '/</a></h2>');
-					$('div[id*="thread_"]').last().after(thread.attr('data-board', overflow[0].board).css('display', 'block'));
-					$(document).trigger('new_post', thread);
-					overflow.shift();
-				}
+			thread = $('div#thread_' + overflow[0].id + '[data-board="' + overflow[0].board + '"]');
+			if (thread.length > 0 && thread.css('display') != 'none') { // already present
+				overflow.shift();
+				continue;
+			}
+
+			if($.inArray(page, cache) != -1 && thread.length > 0) {
+				thread.prepend('<h2><a href="/' + overflow[0].board + '/">/' + overflow[0].board + '/</a></h2>');
+				$('div[id*="thread_"]').last().after(thread.attr('data-board', overflow[0].board).css('display', 'block'));
+				$(document).trigger('new_post', thread);
+				overflow.shift();
 			} else {
 				loading = true;
+				$('.pages').show().html(_("Loading..."));
 				$.get(page, function(data) {
 					cache.push(page);
 
@@ -23,16 +33,23 @@ $(document).ready(function() {
 					});
 
 					thread = $('div#thread_' + overflow[0].id + '[data-board="' + overflow[0].board + '"]');
-					if(thread.length > 0) {
+					if(thread.length > 0 && thread.css('display') != 'none') {
 						thread.prepend('<h2><a href="/' + overflow[0].board + '/">/' + overflow[0].board + '/</a></h2>');
 						$('div[id*="thread_"]').last().after(thread.attr('data-board', overflow[0].board).css('display', 'block'));
 						$(document).trigger('new_post', thread);
 						overflow.shift();
 					}
+					else {
+						overflow.shift(); // We missed it? Or already present...
+					}
 
 					loading = false;
+					$('.pages').hide().html("");
 				});
+				break;
 			}
 		}
 	});
 });
+
+})();