Fix stacking disconnection alerts

www/common/common-interface.js

@@ -491,6 +491,11 @@ define([
             $ok.focus();
             Notifier.notify();
         });
+
+        return {
+            element: frame,
+            delete: close
+        };
     };
 
     UI.prompt = function (msg, def, cb, opt, force) {

www/common/common-ui-elements.js

@@ -56,6 +56,21 @@ define([
         });
     };
 
+    var dcAlert;
+    UIElements.disconnectAlert = function () {
+        if (dcAlert && $(dcAlert.element).length) { return; }
+        dcAlert = UI.alert(Messages.common_connectionLost, undefined, true);
+    };
+    UIElements.reconnectAlert = function () {
+        if (!dcAlert) { return; }
+        if (!dcAlert.delete) {
+            dcAlert = undefined;
+            return;
+        }
+        dcAlert.delete();
+        dcAlert = undefined;
+    };
+
     var importContent = function (type, f, cfg) {
         return function () {
             var $files = $('<input>', {type:"file"});

www/common/onlyoffice/inner.js

@@ -1606,17 +1606,10 @@ define([
             pinImages();
         };
 
-        config.onAbort = function () {
-            // inform of network disconnect
-            setEditable(false);
-            toolbar.failed();
-            UI.alert(Messages.common_connectionLost, undefined, true);
-        };
-
         config.onConnectionChange = function (info) {
             if (info.state) {
                 // If we tried to send changes while we were offline, force a page reload
-                UI.findOKButton().click();
+                UIElements.reconnectAlert();
                 if (Object.keys(pendingChanges).length) {
                     return void UI.confirm(Messages.oo_reconnect, function (yes) {
                         if (!yes) { return; }
@@ -1629,7 +1622,7 @@ define([
                 setEditable(false);
                 offline = true;
                 UI.findOKButton().click();
-                UI.alert(Messages.common_connectionLost, undefined, true);
+                UIElements.disconnectAlert();
             }
         };
 

www/common/sframe-app-framework.js

@@ -396,9 +396,9 @@ define([
             if (state === STATE.DELETED) { return; }
             stateChange(info.state ? STATE.INITIALIZING : STATE.DISCONNECTED, info.permanent);
             /*if (info.state) {
-                UI.findOKButton().click();
+                UIElements.reconnectAlert();
             } else {
-                UI.alert(Messages.common_connectionLost, undefined, true);
+                UIElements.disconnectAlert();
             }*/
         };