public ConversationViewModel(ChatClient client, Conversation convo)
{
this.client = client;
sendChatCommand = new RelayCommand(_ =>
{
Conversation.SendMessage(CurrentMessage, App.Current.ClientFont);
CurrentMessage = "";
}, _ => CurrentMessage.Length > 0);
App.Current.FontChanged += OnFontChanged;
OnFontChanged(this, null);
SetConversation(convo);
}
public void SwitchToConversation(Conversation convo)
{
var convoVM = openTabs.Single(vm =>
{
if (vm is ConversationViewModel)
return (vm as ConversationViewModel).Conversation == convo;
return false;
}) as ConversationViewModel;
OpenTabsView.MoveCurrentTo(convoVM);
}
public void DeleteConversation(Conversation convo)
{
conversations.Remove(convo);
conversationEventsMap.Remove(convo.Name);
}
public NewConversationEventArgs(Conversation convo, bool clientStarted)
{
Conversation = convo;
ClientStarted = clientStarted;
}
Conversation CreateConversation(IContact who, bool clientStarted)
{
Conversation convo;
var events = new ConversationEvents();
if (who is User)
convo = new Conversation(client, who as User, events);
else if (who is Group)
convo = new Conversation(client, who as Group, events);
else
throw new ArgumentException("who is not a User or a Group");
conversations.Add(convo);
conversationEventsMap[who.Name] = events;
NewConversation.SafeInvoke(this, new NewConversationEventArgs(convo, clientStarted));
return convo;
}
public void SetConversation(Conversation convo)
{
if (Conversation != null)
{
typingParticipants.Clear();
foreach (var participant in participants)
participant.Dispose();
participants.Clear();
Conversation.Contact.Changed -= OnContactChanged;
Conversation.UserAdded -= OnUserAdded;
Conversation.UserChanged -= OnUserChanged;
Conversation.UserRemoved -= OnUserRemoved;
Conversation.NewMessage -= OnChatReceived;
Conversation.UserTyping -= OnUserTyping;
Conversation.Ended -= OnEnded;
}
Conversation = convo;
var oldContact = Contact;
if (convo != null)
{
convo.Contact.Changed += OnContactChanged;
convo.UserAdded += OnUserAdded;
convo.UserChanged += OnUserChanged;
convo.UserRemoved += OnUserRemoved;
convo.NewMessage += OnChatReceived;
convo.UserTyping += OnUserTyping;
convo.Ended += OnEnded;
foreach (var participant in convo.Participants)
participants.Add(new UserViewModel(client, participant.User));
Contact = ContactViewModel.Create(client, convo.Contact);
}
else
Contact = null;
if (oldContact != null)
oldContact.Dispose();
}
