public void AddListener <TEvent>(ApplicationEventHandlerDelegate <TEvent> handler) where TEvent : IApplicationEvent
{
Delegate @delegate;
if (_applicationEventHandlers.TryGetValue(typeof(TEvent), out @delegate))
{
_applicationEventHandlers[typeof(TEvent)] = Delegate.Combine(@delegate, handler);
}
else
{
_applicationEventHandlers[typeof(TEvent)] = handler;
}
}
public void RemoveListener <TEvent>(ApplicationEventHandlerDelegate <TEvent> handler) where TEvent : IApplicationEvent
{
Delegate @delegate;
if (_applicationEventHandlers.TryGetValue(typeof(TEvent), out @delegate))
{
Delegate currentDel = Delegate.Remove(@delegate, handler);
if (currentDel == null)
{
_applicationEventHandlers.Remove(typeof(TEvent));
}
else
{
_applicationEventHandlers[typeof(TEvent)] = currentDel;
}
}
}
public void Dispatch <TEvent>(TEvent @event) where TEvent : IApplicationEvent
{
if (@event == null)
{
throw new ArgumentNullException("event");
}
if (_disposed)
{
throw new ObjectDisposedException("Cannot dispatch and event when disposed! ");
}
Delegate @delegate;
if (_applicationEventHandlers.TryGetValue(typeof(TEvent), out @delegate))
{
ApplicationEventHandlerDelegate <TEvent> callback = @delegate as ApplicationEventHandlerDelegate <TEvent>;
if (callback != null)
{
callback(@event);
}
}
}
