public void after_calling_unsubscribe_handler_is_not_called_when_event_is_published()
{
Action <MessageType> myAction = x => { Assert.Fail("Delegate was not removed"); };
IEventAggregatorTicket <MessageType> ticket = _eventAggregator.Subscribe(myAction);
ticket.Dispose();
_eventAggregator.Publish(new MessageType(NameToSend));
}
public void OnLoad()
{
// subscribing to an event (Stop Publishing) in Nomad
_stopPublishingSubscriptionTicket = _eventAggregator.Subscribe <StopPublishingMessageType>(StopPublishing);
//subscribing to AllModulesLoaded event in Nomad
_allModulesLoadedSubscriptionTicket = _eventAggregator.Subscribe <NomadAllModulesLoadedMessage>(TickerMethod);
}
public void OnLoad()
{
// subscribing to an event (Stop Publishing) in Nomad
_stopPublishingSubscriptionTicket = _eventAggregator.Subscribe<StopPublishingMessageType>(StopPublishing);
//subscribing to AllModulesLoaded event in Nomad
_allModulesLoadedSubscriptionTicket = _eventAggregator.Subscribe<NomadAllModulesLoadedMessage>(TickerMethod);
}
public void after_unsubscribing_subscribing_again_results_in_working_event()
{
Action <MessageType> myAction = x => { Assert.Fail("Delegate was not removed"); };
IEventAggregatorTicket <MessageType> ticket = _eventAggregator.Subscribe(myAction);
ticket.Dispose();
_eventAggregator.Subscribe <MessageType>(x => { });
Assert.DoesNotThrow(() => _eventAggregator.Publish(new MessageType(NameToSend)),
"After subscribing and unsubscribing an event we can no longer use event of this type");
}
//TODO: Unsubsribing new lambda won't work!
/// <summary>
/// Unsubsribes specified action.
/// Removes event from collection. Thread safe.
/// <see cref="IEventAggregator.Unsubscribe{T}"/>
/// </summary>
/// <param name="ticket">ticket have to be <see cref="EventAggregatorTicket{T}"/></param>
/// <exception cref="KeyNotFoundException">when unsubscribing from type which was no subsription ever</exception>
/// <exception cref="MemberAccessException"></exception>
private void Unsubscribe(IEventAggregatorTicket ticket)
{
Type type = ticket.ActionType;
HashSet <IEventAggregatorTicket> tickets = null;
lock (_subscriptions)
{
tickets = _subscriptions[type];
}
lock (tickets)
{
tickets.Remove(ticket);
}
}
public void when_one_handler_unsubscribes_others_are_still_called()
{
var sentPayload = new MessageType(NameToSend);
MessageType receivedPayload = null;
_eventAggregator.Subscribe <MessageType>(payload => receivedPayload = payload);
Action <MessageType> myAction = x => { };
IEventAggregatorTicket <MessageType> ticket = _eventAggregator.Subscribe(myAction);
ticket.Dispose();
_eventAggregator.Publish(sentPayload);
Assert.AreSame(sentPayload, receivedPayload);
}
public IEventAggregatorTicket <T> Subscribe <T>(Action <T> action, DeliveryMethod deliveryMethod) where T : class
{
// subscribe on local event
IEventAggregatorTicket <T> ticket = _localEventAggregator.Subscribe(action, deliveryMethod);
// update counter of subscrbers
int value;
string key = typeof(T).AssemblyQualifiedName;
if (TicketsCounter.TryGetValue(key, out value))
{
TicketsCounter[key] = value + 1;
}
else
{
TicketsCounter[key] = 1;
}
// remove from ticketCounter if ticket is disposed
ticket.TicketDisposed += (sender, args) =>
{
int v;
string k = args.EventType.AssemblyQualifiedName;
if (TicketsCounter.TryGetValue(k, out v))
{
TicketsCounter[k] = v - 1;
}
else
{
throw new InvalidOperationException("Removed the typed which was never added");
}
};
// subscribe on remote or not by now);
return(ticket);
}
private void GuiThreadChanged(WpfGuiChangedMessage wpfGuiChangedMessage)
{
_guiThreadProvider = wpfGuiChangedMessage.NewGuiThreadProvider;
Unsubscribe(_ticket);
_ticket = Subscribe <WpfGuiChangedMessage>(GuiThreadChangedInvalid);
}
///<summary>
/// Initializes <see cref="EventAggregator"/> with provided <see cref="guiThreadProvider"/>.
///</summary>
public EventAggregator(IGuiThreadProvider guiThreadProvider)
{
_guiThreadProvider = guiThreadProvider;
_ticket = Subscribe <WpfGuiChangedMessage>(GuiThreadChanged);
}
public void OnLoad()
{
_readyForResolvingTicket =
_eventAggregator.Subscribe <NomadAllModulesLoadedMessage>(LocalResolutionMethod);
}
public ProgressBarHelper(IEventAggregator eventAggregator)
{
_ticket = eventAggregator.Subscribe<ThreadedWorkerProgressMessage>(ProgressChanged, DeliveryMethod.GuiThread);
}
public void OnLoad()
{
_readyForResolvingTicket =
_eventAggregator.Subscribe<NomadAllModulesLoadedMessage>(LocalResolutionMethod);
}
public void OnLoad()
{
// subscribing to the CounterMessage
_subscriptionTicket = _eventAggregator.Subscribe <CounterMessageType>(CheckCounter);
}
public void OnLoad()
{
// subscribing to the CounterMessage
_subscriptionTicket = _eventAggregator.Subscribe<CounterMessageType>(CheckCounter);
}
