Exemple #1
0
        /// <summary>
        ///     Returns <see langword = "true" /> if there is a subscriber matching
        ///     <see cref = "T:Senticode.Xamarin.Tools.Core.Events.SubscriptionToken" />.
        /// </summary>
        /// <param name = "token">
        ///     The <see cref = "T:Senticode.Xamarin.Tools.Core.Events.SubscriptionToken" /> returned by
        ///     <see cref = "T:Senticode.Xamarin.Tools.Core.Events.EventBase" /> while subscribing to the event.
        /// </param>
        /// <returns>
        ///     <see langword = "true" /> if there is a <see cref = "T:Senticode.Xamarin.Tools.Core.Events.SubscriptionToken" /> that
        ///     matches; otherwise <see langword = "false" />.
        /// </returns>
        public virtual bool Contains(SubscriptionToken token)
        {
            var subscriptions = Subscriptions;
            var lockTaken     = false;

            try
            {
                Monitor.Enter(subscriptions, ref lockTaken);
                return(Subscriptions.FirstOrDefault(evt => evt.SubscriptionToken == token) != null);
            }
            finally
            {
                if (lockTaken)
                {
                    Monitor.Exit(subscriptions);
                }
            }
        }
Exemple #2
0
        /// <summary>
        ///     Removes the subscriber matching the <see cref = "T:Senticode.Xamarin.Tools.Core.Events.SubscriptionToken" />.
        /// </summary>
        /// <param name = "token">
        ///     The <see cref = "T:Senticode.Xamarin.Tools.Core.Events.SubscriptionToken" /> returned by
        ///     <see cref = "T:Senticode.Xamarin.Tools.Core.Events.EventBase" /> while subscribing to the event.
        /// </param>
        public virtual void Unsubscribe(SubscriptionToken token)
        {
            var subscriptions = Subscriptions;
            var lockTaken     = false;

            try
            {
                Monitor.Enter(subscriptions, ref lockTaken);
                var eventSubscription = Subscriptions.FirstOrDefault(evt => evt.SubscriptionToken == token);
                if (eventSubscription == null)
                {
                    return;
                }

                Subscriptions.Remove(eventSubscription);
            }
            finally
            {
                if (lockTaken)
                {
                    Monitor.Exit(subscriptions);
                }
            }
        }