app/assets/javascripts/trestle/_sidebar.js in trestle-0.8.4 vs app/assets/javascripts/trestle/_sidebar.js in trestle-0.8.5

@@ -38,15 +38,36 @@
   sidebar.find('.toggle-sidebar').on('click', function(e) {
     e.preventDefault();
 
     if (sidebar.hasClass('expanded') || sidebar.hasClass('collapsed')) {
       sidebar.removeClass('expanded').removeClass('collapsed');
-      document.cookie = "trestle:sidebar=; path=/; expires=Thu, 01 Jan 1970 00:00:00 GMT";
+      Trestle.cookie.delete("trestle:sidebar");
     } else if ($(document).width() >= 1200) {
       sidebar.addClass('collapsed');
-      document.cookie = "trestle:sidebar=collapsed; path=/";
+      Trestle.cookie.set("trestle:sidebar", "collapsed");
     } else if ($(document).width() >= 768) {
       sidebar.addClass('expanded');
-      document.cookie = "trestle:sidebar=expanded; path=/";
+      Trestle.cookie.set("trestle:sidebar", "expanded");
     }
   });
+
+
+  // Toggle navigation groups
+
+  sidebar.find('.nav-header a').on('click', function(e) {
+    e.preventDefault();
+
+    $(this).closest('ul').toggleClass('collapsed');
+
+    var collapsed = sidebar.find('.collapsed .nav-header a').map(function() {
+      return $(this).attr('href').replace(/^#/, '');
+    }).toArray();
+
+    Trestle.cookie.set("trestle:navigation:collapsed", collapsed.join(","))
+  });
+
+
+  // Scroll sidebar to active item
+
+  var active = sidebar.find('.active');
+  sidebar.find('.app-sidebar-inner').scrollTop(active.offset().top - 100);
 });