From ce65e897f9651082b3d0d7db5c08dd9b0b040b97 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?G=C3=A9ry=20Debongnie?= <ged@odoo.com>
Date: Mon, 7 Dec 2015 11:14:46 +0100
Subject: [PATCH] [FIX] bus: prevent crosstab bus from longpolling on init

only need to longpoll after start_polling...
---
 addons/bus/static/src/js/bus.js | 23 ++++++++++++++---------
 1 file changed, 14 insertions(+), 9 deletions(-)

diff --git a/addons/bus/static/src/js/bus.js b/addons/bus/static/src/js/bus.js
index 969a1316d58..cbcf0fdfa83 100644
--- a/addons/bus/static/src/js/bus.js
+++ b/addons/bus/static/src/js/bus.js
@@ -106,17 +106,9 @@ bus.Bus = Widget.extend({
  */
 var CrossTabBus = bus.Bus.extend({
     init: function(){
-        var self = this;
         this._super.apply(this, arguments);
         this.is_master = false;
-        tab_manager.register_tab(function () {
-            self.is_master = true;
-            self.start_polling();
-        }, function () {
-            self.is_master = false;
-            self.stop_polling();
-        });
-
+        this.is_registered = false;
         if (parseInt(getItem('bus.last_ts', 0)) + 50000 < new Date().getTime()) {
             setItem('bus.last', -1);
         }
@@ -132,6 +124,19 @@ var CrossTabBus = bus.Bus.extend({
 
     },
     start_polling: function(){
+        var self = this;
+        if (!this.is_registered) {
+            this.is_registered = true;
+            tab_manager.register_tab(function () {
+                self.is_master = true;
+                self.start_polling();
+            }, function () {
+                self.is_master = false;
+                self.stop_polling();
+            });
+            return;  // start_polling will be called again on tab registration
+        }
+
         if (this.is_master) {
             this._super.apply(this, arguments);
         }