public async Task<T> CallTopScreenWithResult<T>(string header, object obj)
        {
            if (WebControlTopScreen?.WebView == null || _lastWebState != WebAppState.Online)
                throw new InvalidOperationException("Can not call Top screen at this moment");

            var result = await WebControlTopScreen.WebView.PerformJsCommandWithResultAsync<T>("listenTopScreen", new object[] { header, obj });
            if (result is JSUndefined)
                result = default(T);

            return result;
        }

public static async Task<T> PerformJsCommandWithResultAsync<T>(this WebView webView, string methodName, object[] methodArguments)
        {
            try
            {
                if (webView.CreatedByThisThread() == false && webView.CanEvalScript)
                    return (T)webView.EvalScript(GetJavascriptFunctionString(methodName, methodArguments), true);

                var taskCompletionSource = new TaskCompletionSource<object>();
                var call = webView.QueueScriptCall(GetJavascriptFunctionString(methodName, methodArguments));
                call.OnDone(() => taskCompletionSource.SetResult(call.Result));

                return (T)await taskCompletionSource.Task;
            }
            catch (Exception ex)
            {
                LogJavascriptExceptionMessage(ex, methodName, methodArguments);
                throw;
            }
        }