1 files changed, 15 insertions, 0 deletions
diff --git a/addons/web/static/src/js/openerpframework.js b/addons/web/static/src/js/openerpframework.js
index 531893e1b1e..5ea279d0438 100644
--- a/addons/web/static/src/js/openerpframework.js
+++ b/addons/web/static/src/js/openerpframework.js
@@ -1222,6 +1222,21 @@ openerp.qweb.default_dict = {
     '_t' : openerp._t
 };
 
+openerp.Mutex = openerp.Class.extend({
+    init: function() {
+        this.def = $.Deferred().resolve();
+    },
+    exec: function(action) {
+        var current = this.def;
+        var next = this.def = $.Deferred();
+        return current.then(function() {
+            return $.when(action()).always(function() {
+                next.resolve();
+            });
+        });
+    }
+});
+
 openerp.declare = declare;
 
 return openerp;