Ability to display an error in the toolbar state

customize.dist/translations/messages.fr.js

@@ -44,6 +44,7 @@ define(function () {
     out.typing = "Édition";
     out.initializing = "Initialisation...";
     out.forgotten = 'Déplacé vers la corbeille';
+    out.errorState = 'Erreur critique : {0}';
     out.lag = 'Latence';
     out.readonly = 'Lecture seule';
     out.anonymous = "Anonyme";

customize.dist/translations/messages.js

@@ -43,9 +43,10 @@ define(function () {
     out.disconnected = 'Disconnected';
     out.synchronizing = 'Synchronizing';
     out.reconnecting = 'Reconnecting...';
-    out.typing = "Typing";
+    out.typing = "Editing";
     out.initializing = "Initializing...";
     out.forgotten = 'Moved to the trash';
+    out.errorState = 'Critical error: {0}';
     out.lag = 'Lag';
     out.readonly = 'Read only';
     out.anonymous = "Anonymous";

www/common/toolbar3.js

@@ -691,6 +691,7 @@ define([
     var typing = -1;
     var kickSpinner = function (toolbar, config/*, local*/) {
         if (!toolbar.spinner) { return; }
+        if (toolbar.isErrorState) { return; }
         var $spin = toolbar.spinner;
 
         if (typing === -1) {
@@ -1050,6 +1051,17 @@ define([
             }
         };
 
+        toolbar.errorState = function (state, error) {
+            toolbar.isErrorState = state;
+            if (toolbar.spinner) {
+                if (!state) {
+                    return void kickSpinner(toolbar, config);
+                }
+                var txt = Messages._getKey('errorState', [error]);
+                toolbar.spinner.text(txt);
+            }
+        };
+
         // When the pad is moved to the trash (forget button)
         toolbar.forgotten = function (/*userId*/) {
             toolbar.connected = false;