private void OnTelegramServiceNewMessage(object sender, EventArgs.NewMessageEventArgs e)
{
_dispatcherService.InvokeIfRequired(async() =>
{
try
{
var chat = Chats.FirstOrDefault(x => x.Chat.Id == e.Message.Chat.Id);
bool newChat = chat == null;
if (newChat)
{
chat = ChatViewModel.Create(e.Message.Chat);
Chats.Add(chat);
}
chat.AddMessage(e.Message);
Chats.MoveItemToTop(chat);
if (newChat)
{
await chat.LoadImageAsync();
}
}
catch (Exception ex)
{
ProcessException(ex);
}
});
}
/// <summary>
/// Meant to be used by an inheriting controller to inject a view from the SwitchViewEvent, handled by OnSwitchViewEvent
/// </summary>
/// <typeparam name="TView"></typeparam>
/// <param name="region"></param>
/// <returns></returns>
protected TView RegisterAndActivateView <TView>(string region = RegionNames.MainRegion) where TView : class
{
if (string.IsNullOrWhiteSpace(region))
{
region = RegionNames.MainRegion;
}
TView view = null;
_dispatcherService.InvokeIfRequired(() =>
{
lock (_locker)
{
try
{
view = _container.GetInstance <TView>();
try
{
_regionManager.Regions[region].ActiveViews.ToList().ForEach(v => _regionManager.Regions[region].Remove(v));
// Add it, then activate
_regionManager.AddToRegion(region, view);
_regionManager.Regions[region].Activate(view);
}
catch (Exception ex)
{
Logger.Default.Error("Unable to activate view.", ex);
view = null;
}
}
catch (Exception ex)
{
Logger.Default.Error("unable to switch view", ex);
}
}
});
return(view);
}