public ChatWindow(GwupeClientAppContext appContext, EngagementWindow engagementWindow)
{
this.InitializeComponent();
_appContext = appContext;
_engagementWindow = engagementWindow;
Chat = _engagementWindow.Engagement.Functions["Chat"] as Function;
Chat.NewActivity += ChatOnNewMessage;
ChatPanelViewer.ScrollToBottom();
DataContext = new ChatWindowDataContext(_appContext, this);
// need to do this here, because we get weird errors if its part of the data context.
ChatPanel.ItemsSource = new DispatchingCollection <ObservableCollection <IChatMessage>, IChatMessage>(Chat.Conversation.Exchange, Dispatcher);
}
private void ChatOnNewMessage(object sender, EngagementActivity e)
{
if (!Dispatcher.CheckAccess()) // Only run with dispatcher
{
Dispatcher.Invoke(new Action(() => ChatOnNewMessage(sender, e)));
return;
}
// Only run event handler if the dispatcher is not shutting down.
if (!Dispatcher.HasShutdownStarted)
{
ChatPanelViewer.ScrollToBottom();
if (_lastMessage.Day != DateTime.Now.Day)
{
Logger.Debug("Rolling over into new day, adjusting times in " + _engagementWindow.Engagement.SecondParty.Party.Username);
// This is to make sure that all the items 'friendly dates' remain correct on midnight rollover
ChatPanel.Items.Refresh();
}
_lastMessage = DateTime.Now;
}
}
