4 files changed, 43 insertions, 5 deletions
diff --git a/theme/javascript/core/loading.js b/theme/javascript/core/loading.js
new file mode 100644
index 0000000..193531f
--- /dev/null
+++ b/theme/javascript/core/loading.js
@@ -0,0 +1,18 @@
+define([
+    "jQuery"
+], function($) {
+    var showLoading = function(p) {
+        var $book = $(".book");
+
+        $book.addClass("is-loading");
+        p.always(function() {
+            $book.removeClass("is-loading");
+        });
+
+        return p;
+    };
+
+    return {
+        show: showLoading
+    };
+});
+\ No newline at end of file
diff --git a/theme/javascript/core/navigation.js b/theme/javascript/core/navigation.js
index d8dc8b9..e614392 100755
--- a/theme/javascript/core/navigation.js
+++ b/theme/javascript/core/navigation.js
@@ -6,8 +6,9 @@ define([
     "core/search",
     "core/progress",
     "core/exercise",
-    "core/quiz"
-], function($, path, events, state, search, progress, exercises, quiz) {
+    "core/quiz",
+    "core/loading"
+], function($, path, events, state, search, progress, exercises, quiz, loading) {
     var prev, next;
     var githubCountStars, githubCountWatch;
 
@@ -23,7 +24,7 @@ define([
             return
         }
 
-        return $.get(url)
+        return loading.show($.get(url)
         .done(function (html) {
             // Push url to history
             if (push) history.pushState({ path: url }, null, url);
@@ -59,7 +60,7 @@ define([
         })
         .fail(function (e) {
             location.href = relativeUrl;
-        });
+        }));
     };
 
     var updateGitHubCounts = function() {
diff --git a/theme/javascript/gitbook.js b/theme/javascript/gitbook.js
index 7dcb8d7..cb222da 100755
--- a/theme/javascript/gitbook.js
+++ b/theme/javascript/gitbook.js
@@ -2,6 +2,7 @@ define([
     "jQuery",
     "utils/storage",
     "utils/sharing",
+    "utils/appcache",
 
     "core/events",
     "core/font-settings",
@@ -11,7 +12,7 @@ define([
     "core/progress",
     "core/sidebar",
     "core/search"
-], function($, storage, sharing, events, fontSettings, state, keyboard, navigation, progress, sidebar, search){
+], function($, storage, appCache, sharing, events, fontSettings, state, keyboard, navigation, progress, sidebar, search){
     var start = function(config) {
         var $book;
         $book = state.$book;
@@ -30,6 +31,9 @@ define([
         // Init keyboard
         keyboard.init();
 
+        // Init appcache
+        appCache.init();
+
         // Bind sharing button
         sharing.init();
         
diff --git a/theme/javascript/utils/appcache.js b/theme/javascript/utils/appcache.js
new file mode 100644
index 0000000..e813ab0
--- /dev/null
+++ b/theme/javascript/utils/appcache.js
@@ -0,0 +1,15 @@
+define([], function() {
+    var isAvailable = (typeof applicationCache !== "undefined");
+
+    var init = function() {
+        if (!isAvailable) return;
+
+        window.applicationCache.addEventListener('updateready', function() {
+            window.location.reload();
+        }, false);
+    };
+
+    return {
+        init: init
+    };
+});
+\ No newline at end of file