From 43d378f2e84d7c0f4e5abb40cec44e0fcec6b966 Mon Sep 17 00:00:00 2001
From: Nicolas Lempereur <nle@odoo.com>
Date: Fri, 14 Aug 2015 15:35:45 +0200
Subject: [PATCH] summernote: add hasUndo and hasRedo method for pre/next
 buttons

Since the stack offset of the editing history is hidden, it was not
possible to have next (CTRL+Y) and previous (CTRL+Z) buttons.
---
 .../static/lib/summernote/src/js/editing/History.js       | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/addons/website/static/lib/summernote/src/js/editing/History.js b/addons/website/static/lib/summernote/src/js/editing/History.js
index ef8dd6016f1..d6893cdd941 100644
--- a/addons/website/static/lib/summernote/src/js/editing/History.js
+++ b/addons/website/static/lib/summernote/src/js/editing/History.js
@@ -40,6 +40,14 @@ define(['summernote/core/range'], function (range) {
       }
     };
 
+    this.hasUndo = function () {
+      return 1 < stackOffset;
+    };
+
+    this.hasRedo = function () {
+      return stack.length - 1 > stackOffset;
+    };
+
     this.recordUndo = function () {
       stackOffset++;