diff --git a/src/js/base/module/Fullscreen.js b/src/js/base/module/Fullscreen.js
index d8ff8d170..d4972f97a 100644
--- a/src/js/base/module/Fullscreen.js
+++ b/src/js/base/module/Fullscreen.js
@@ -23,8 +23,7 @@ define([
       };
 
       $editor.toggleClass('fullscreen');
-      var isFullscreen = $editor.hasClass('fullscreen');
-      if (isFullscreen) {
+      if (this.isFullscreen()) {
         $editable.data('orgHeight', $editable.css('height'));
 
         $window.on('resize', function () {
@@ -42,7 +41,11 @@ define([
         $scrollbar.css('overflow', 'visible');
       }
 
-      context.invoke('toolbar.updateFullscreen', isFullscreen);
+      context.invoke('toolbar.updateFullscreen', this.isFullscreen());
+    };
+
+    this.isFullscreen = function () {
+      return $editor.hasClass('fullscreen');
     };
   };
 
diff --git a/src/js/lite/ui.js b/src/js/lite/ui.js
index 14db388b1..7cd017f42 100644
--- a/src/js/lite/ui.js
+++ b/src/js/lite/ui.js
@@ -25,7 +25,8 @@ define([
         note: $note,
         editor: $editor,
         toolbar: $editor.find('.note-toolbar'),
-        editable: $editor.find('.note-editable')
+        editable: $editor.find('.note-editable'),
+        codable: $editor.find('.note-codable')
       };
     }
   };
diff --git a/test/unit/base/module/Fullscreen.spec.js b/test/unit/base/module/Fullscreen.spec.js
index 8de20ce03..40eddbfce 100644
--- a/test/unit/base/module/Fullscreen.spec.js
+++ b/test/unit/base/module/Fullscreen.spec.js
@@ -3,15 +3,30 @@
  * (c) 2015~ Summernote Team
  * summernote may be freely distributed under the MIT license./
  */
-/* jshint unused: false */
 define([
   'chai',
-  'summernote/base/module/Fullscreen'
-], function (chai, Fullscreen) {
+  'summernote/lite/settings',
+  'summernote/base/module/Fullscreen',
+  'summernote/base/Context'
+], function (chai, settings, Fullscreen, Context) {
   'use strict';
 
   var expect = chai.expect;
 
-  describe('base:module.Fullscreen', function () {
+  describe('Fullscreen', function () {
+    var fullscreen, context;
+    beforeEach(function () {
+      var options = $.extend({}, $.summernote.options);
+      options.langInfo = $.extend(true, {
+      }, $.summernote.lang['en-US'], $.summernote.lang[options.lang]);
+      context = new Context($('<div><p>hello</p></div>'), options);
+      fullscreen = new Fullscreen(context);
+    });
+
+    it('should toggle fullscreen mode', function () {
+      expect(fullscreen.isFullscreen()).to.be.false;
+      fullscreen.toggle();
+      expect(fullscreen.isFullscreen()).to.be.true;
+    });
   });
 });