editor: Missing names of exercises on a canvas

[fnpeditor.git] / src / editor / modules / documentCanvas / canvas / documentElement.js

diff --git a/src/editor/modules/documentCanvas/canvas/documentElement.js b/src/editor/modules/documentCanvas/canvas/documentElement.js
index c0dd361..a1965cd 100644 (file)
--- a/src/editor/modules/documentCanvas/canvas/documentElement.js
+++ b/src/editor/modules/documentCanvas/canvas/documentElement.js
@@ -241,6 +241,9 @@ $.extend(DocumentNodeElement.prototype, {
         // })
         this.dom.css('display', what);
         this._container().css('display', what);
+    },
+    children: function() {
+        return [];
     }
 });