Display "trusted" and "untrusted" notifications

notebook/static/notebook/js/notificationarea.js

@@ -24,6 +24,7 @@ define([
     NotebookNotificationArea.prototype.init_notification_widgets = function () {
         this.init_kernel_notification_widget();
         this.init_notebook_notification_widget();
+        this.init_trusted_notebook_notification_widget();
     };
 
     /**
@@ -338,5 +339,27 @@ define([
         });
     };
 
+    /**
+     * Initialize the notification widget for trusted notebook messages.
+     *
+     * @method init_trusted_notebook_notification_widget
+     */
+    NotebookNotificationArea.prototype.init_trusted_notebook_notification_widget = function () {
+        var that = this;
+        var tnw = this.widget('trusted');
+
+        // Notebook trust events
+        this.events.on('trust_changed.Notebook', function (event, trusted) {
+            if (trusted) {
+                tnw.info("Trusted");
+            } else {
+                tnw.danger("Not Trusted", undefined, function() {
+                  that.notebook.trust_notebook();
+                  return false;
+                });
+            }
+        });
+    };
+
     return {'NotebookNotificationArea': NotebookNotificationArea};
 });