[ADD] web_switch_company_warning : display a message saying it's time to reload the page

web_switch_company_warning/static/src/js/switch_comapny_warning_worker.js

@@ -0,0 +1,23 @@
+//Show a big banner in the top of the page if the company has been
+//changed in another tab or window (in the same browser)
+
+var con = [];
+
+var lastCtx  = null;
+
+addEventListener("connect", function(ee) {
+    var port = ee.ports[0];
+    con.push(port);
+
+    port.onmessage = function (e) { //addEventListener doesnt seams to work well 
+        var newCtx = e.data;
+
+        if (lastCtx && newCtx != lastCtx) {
+            con.map(function (eport) {
+                eport.postMessage({ type: 'newCtx', "newCtx": newCtx, "lastCtx": lastCtx});
+            });
+        }
+        lastCtx = newCtx;
+    };
+
+}, false);

web_switch_company_warning/static/src/js/switch_company_warning.js

@@ -0,0 +1,50 @@
+openerp.web_switch_company_warning = function (instance) {
+
+    //Show a big banner in the top of the page if the company has been
+    //changed in another tab or window (in the same browser)
+
+    if (!window.SharedWorker)
+        return; //not supported
+
+    instance.web.SwitchCompanyWorker = null; //keep a global reference
+
+    instance.web.SwitchCompanyWarningWidget = instance.web.Widget.extend({
+
+        template:'web_switch_company_warning.warningWidget',
+        init: function() {
+            this._super();
+
+            var self = this;
+
+            var w =  new SharedWorker('/web_switch_company_warning/static/src/js/switch_company_warning_worker.js');
+            instance.web.SwitchCompanyWorker = w;
+
+            w.port.addEventListener('message', function (msg) {
+              if (msg.data.type !== 'newCtx')
+                return;
+
+                if(msg.data.newCtx != self.session.company_id) {
+                    self.$el.show();
+                } else {
+                    self.$el.hide();
+                }
+            });
+
+            w.port.start();
+            w.port.postMessage(this.session.company_id);
+        }
+    });
+
+    instance.web.UserMenu =  instance.web.UserMenu.extend({
+
+        init: function(parent) {
+            this._super(parent);
+
+            var switchCompanyWarning = new instance.web.SwitchCompanyWarningWidget();
+            switchCompanyWarning.insertAfter(instance.webclient.$el.find('#oe_main_menu_navbar'));
+        }
+
+    });
+
+};
+

web_switch_company_warning/static/src/xml/switch_company_warning.xml

@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<template>
+    <t t-name="web_switch_company_warning.warningWidget">
+        <div class="container-fluid bg-warning" style="text-align: center; display:none;">
+            <h3>You switched to a different company with another tab or window</h3>
+            <p><button onclick="location.reload(true);" class="btn">Reload</button> to refresh your session</p>
+        </div>
+    </t>
+</template>