public SubscriptionToken Add <TEventType>(Action <TEventType> action) where TEventType : IEvent
{
var eventType = typeof(TEventType);
WeakActionReference actionReference;
lock (_eventTypesWithActions)
{
if (_eventTypesWithActions.All(i => i.EventType != eventType))
{
_eventTypesWithActions.Add(new EventTypeWithActions(eventType));
}
var actionTarget = action.Target;
var actionMethod = action.Method;
actionReference = new WeakActionReference(actionTarget, actionMethod);
_eventTypesWithActions.Single(i => i.EventType == eventType).Actions.Add(actionReference);
}
return(new SubscriptionToken(eventType, actionReference));
}
internal SubscriptionToken(Type eventType, WeakActionReference actionReference)
{
EventType = eventType;
ActionReference = actionReference;
}