From 34f10e1b02e008bb1d0bbfccc4d866b09faff0e1 Mon Sep 17 00:00:00 2001
From: Carl Monnig <carl.monnig@gmail.com>
Date: Wed, 2 Jan 2013 22:58:37 +0200
Subject: [PATCH] Batch DOM updates to improve speed with less reflows.

---
 js/script.js | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/js/script.js b/js/script.js
index c199b6e..cef4f41 100755
--- a/js/script.js
+++ b/js/script.js
@@ -452,6 +452,7 @@ function deleteDownloadTemplates(top_elem, data) {
 }
 function refreshDownloadTemplates(top_elem, data) {
 	var down_template = $('#download_' + top_elem + '_template').text();
+	var new_items = [];
 	deleteDownloadTemplates('#' + top_elem + '_downloads', data);
 	for(var i = 0; i < data.length; i++) {
 		var ctx = getTemplateCtx(data[i]);
@@ -460,11 +461,13 @@ function refreshDownloadTemplates(top_elem, data) {
 			updateDownloadTemplates(elem, ctx);
 		} else {
 			var item = Mustache.render(down_template, ctx);
-			$('#' + top_elem + '_downloads').prepend(item);
+			new_items.unshift(item);
 		}
 	}
+	if (new_items.length > 0) {
+		$('#' + top_elem + '_downloads').prepend(new_items);
+	}
 	$('#' + top_elem + '_downloads').children('.hero-unit').remove();
-
 }
 function updateGraph(gid) {
 	var elem = $('[data-gid=' + gid + ']');