add a cache for the top menu update (#19)

templates/css/stylesheet.php

@@ -22,7 +22,6 @@
     }
 <?php endif; ?>
 
-
 <?php if ($_['opener-only'] === true): ?>
     #nextcloud {
         display: none;

templates/js/script.php

@@ -73,6 +73,8 @@
     <?php if ($_['external-sites-in-top-menu']): ?>
         sideMenuContainer.attr('data-externalsitesintopmenu', '1')
 
+        var menuCache = null
+
         var updateTopMenu = function() {
             var breakpointMobileWidth = 1024
             var menu = $('#appmenu')
@@ -87,6 +89,12 @@
             var navigationApps = $('#apps ul')
             var appCount = null
 
+            var currentMenuCache = menu.html() + menu.next().html()
+
+            if (currentMenuCache === menuCache) {
+                return
+            }
+
             navigationApps.html('')
 
             apps.each(function(i, app) {
@@ -175,6 +183,8 @@
             } else {
                 moreApps.show()
             }
+
+            menuCache = menu.html() + menu.next().html()
         }
 
         setInterval(updateTopMenu, 50)