private void CallHistoryEventChanged(object sender, VATRP.Core.Events.VATRPCallEventArgs e)
        {
            if (ServiceManager.Instance.Dispatcher.Thread != System.Threading.Thread.CurrentThread)
            {
                ServiceManager.Instance.Dispatcher.BeginInvoke((Action)(() => this.CallHistoryEventChanged(sender, e)));
                return;
            }

            var callEvent = sender as VATRPCallEvent;

            switch (e.historyEventType)
            {
            case HistoryEventTypes.Add:
                AddNewCallEvent(callEvent, true);
                break;

            case HistoryEventTypes.Load:
                LoadCallEvents();
                break;

            case HistoryEventTypes.Reset:
                Calls.Clear();
                _unseenMissedCallsCount = 0;
                CallsListView.Refresh();
                break;

            case HistoryEventTypes.Delete:
                RemoveCallEvent(callEvent);
                break;
            }
        }