Beispiel #1
0
        private BusEventSubscriptionToken AddSubscriptionInternal <TBusEvent>(Action <TBusEvent> deliveryAction, Func <TBusEvent, bool> eventFilter, bool strongReference, IBusEventProxy proxy)
            where TBusEvent : class, IBusEvent
        {
            if (deliveryAction == null)
            {
                throw new ArgumentNullException("deliveryAction");
            }

            if (eventFilter == null)
            {
                throw new ArgumentNullException("eventFilter");
            }

            if (proxy == null)
            {
                throw new ArgumentNullException("proxy");
            }

            lock (m_subscriptionsPadlock)
            {
                List <SubscriptionItem> currentSubscriptions;

                if (!m_subscriptions.TryGetValue(typeof(TBusEvent), out currentSubscriptions))
                {
                    currentSubscriptions = new List <SubscriptionItem>();
                    m_subscriptions[typeof(TBusEvent)] = currentSubscriptions;
                }

                var subscriptionToken = new BusEventSubscriptionToken(this, typeof(TBusEvent));

                IBusEventSubscription subscription;
                if (strongReference)
                {
                    subscription = new StrongBusEventSubscription <TBusEvent>(subscriptionToken, deliveryAction, eventFilter);
                }
                else
                {
                    subscription = new WeakBusEventSubscription <TBusEvent>(subscriptionToken, deliveryAction, eventFilter);
                }

                currentSubscriptions.Add(new SubscriptionItem(proxy, subscription));

                return(subscriptionToken);
            }
        }
Beispiel #2
0
            /// <summary>
            /// Initializes a new instance of the WeakBusEventSubscription class.
            /// </summary>
            /// <param name="destination">Destination object</param>
            /// <param name="deliveryAction">Delivery action</param>
            /// <param name="eventFilter">Filter function</param>
            public WeakBusEventSubscription(BusEventSubscriptionToken subscriptionToken, Action <TBusEvent> deliveryAction, Func <TBusEvent, bool> eventFilter)
            {
                if (subscriptionToken == null)
                {
                    throw new ArgumentNullException("subscriptionToken");
                }

                if (deliveryAction == null)
                {
                    throw new ArgumentNullException("deliveryAction");
                }

                if (eventFilter == null)
                {
                    throw new ArgumentNullException("eventFilter");
                }

                m_subscriptionToken = subscriptionToken;
                m_deliveryAction    = new WeakReference(deliveryAction);
                m_eventFilter       = new WeakReference(eventFilter);
            }
Beispiel #3
0
            /// <summary>
            /// Initializes a new instance of the StrongBusEventSubscription class.
            /// </summary>
            /// <param name="destination">Destination object</param>
            /// <param name="deliveryAction">Delivery action</param>
            /// <param name="eventFilter">Filter function</param>
            public StrongBusEventSubscription(BusEventSubscriptionToken subscriptionToken, Action <TBusEvent> deliveryAction, Func <TBusEvent, bool> eventFilter)
            {
                if (subscriptionToken == null)
                {
                    throw new ArgumentNullException("subscriptionToken");
                }

                if (deliveryAction == null)
                {
                    throw new ArgumentNullException("deliveryAction");
                }

                if (eventFilter == null)
                {
                    throw new ArgumentNullException("eventFilter");
                }

                m_subscriptionToken = subscriptionToken;
                m_deliveryAction    = deliveryAction;
                m_eventFilter       = eventFilter;
            }
Beispiel #4
0
        private void RemoveSubscriptionInternal <TBusEvent>(BusEventSubscriptionToken subscriptionToken)
            where TBusEvent : class, IBusEvent
        {
            if (subscriptionToken == null)
            {
                throw new ArgumentNullException("subscriptionToken");
            }

            lock (m_subscriptionsPadlock)
            {
                List <SubscriptionItem> currentSubscriptions;
                if (!m_subscriptions.TryGetValue(typeof(TBusEvent), out currentSubscriptions))
                {
                    return;
                }

                var currentlySubscribed = (from sub in currentSubscriptions
                                           where object.ReferenceEquals(sub.Subscription.SubscriptionToken, subscriptionToken)
                                           select sub).ToList();

                currentlySubscribed.ForEach(sub => currentSubscriptions.Remove(sub));
            }
        }
Beispiel #5
0
 /// <summary>
 /// Unsubscribe from a particular bus event type.
 ///
 /// Does not throw an exception if the subscription is not found.
 /// </summary>
 /// <typeparam name="TBusEvent">Type of bus event</typeparam>
 /// <param name="subscriptionToken">Subscription token received from Subscribe</param>
 public void Unsubscribe <TBusEvent>(BusEventSubscriptionToken subscriptionToken) where TBusEvent : class, IBusEvent
 {
     RemoveSubscriptionInternal <TBusEvent>(subscriptionToken);
 }