public void ShouldReceiveDelegateOnDifferentThread()
{
ManualResetEvent completeEvent = new ManualResetEvent(false);
SynchronizationContext.SetSynchronizationContext(new SynchronizationContext());
SynchronizationContext calledSyncContext = null;
Action <object> action = delegate
{
calledSyncContext = SynchronizationContext.Current;
completeEvent.Set();
};
IDelegateReference actionDelegateReference = new MockDelegateReference()
{
Target = action
};
IDelegateReference filterDelegateReference = new MockDelegateReference()
{
Target = (Predicate <object>) delegate { return(true); }
};
var eventSubscription = new BackgroundEventSubscription <object>(actionDelegateReference, filterDelegateReference);
var publishAction = eventSubscription.GetExecutionStrategy();
Assert.NotNull(publishAction);
publishAction.Invoke(null);
completeEvent.WaitOne(5000);
Assert.NotEqual(SynchronizationContext.Current, calledSyncContext);
}
public void ShouldReceiveDelegateOnDifferentThread()
{
int calledThreadId = -1;
ManualResetEvent completeEvent = new ManualResetEvent(false);
Action <object> action = delegate
{
calledThreadId = Thread.CurrentThread.ManagedThreadId;
completeEvent.Set();
};
IDelegateReference actionDelegateReference = new MockDelegateReference()
{
Target = action
};
IDelegateReference filterDelegateReference = new MockDelegateReference()
{
Target = (Predicate <object>) delegate { return(true); }
};
var eventSubscription = new BackgroundEventSubscription <object>(actionDelegateReference, filterDelegateReference);
var publishAction = eventSubscription.GetExecutionStrategy();
Assert.IsNotNull(publishAction);
publishAction.Invoke(null);
completeEvent.WaitOne(5000, false);
Assert.AreNotEqual(Thread.CurrentThread.ManagedThreadId, calledThreadId);
}
public void ShouldReceiveDelegateOnDifferentThread()
{
ManualResetEvent completeEvent = new ManualResetEvent(false);
SynchronizationContext.SetSynchronizationContext(new SynchronizationContext());
SynchronizationContext calledSyncContext = null;
Action<object> action = delegate
{
calledSyncContext = SynchronizationContext.Current;
completeEvent.Set();
};
IDelegateReference actionDelegateReference = new MockDelegateReference() { Target = action };
IDelegateReference filterDelegateReference = new MockDelegateReference() { Target = (Predicate<object>)delegate { return true; } };
var eventSubscription = new BackgroundEventSubscription<object>(actionDelegateReference, filterDelegateReference, null, EventCommunicatorsRelationship.All);
var publishAction = eventSubscription.GetExecutionStrategy();
Assert.NotNull(publishAction);
publishAction.Invoke(null);
completeEvent.WaitOne(5000);
Assert.NotEqual(SynchronizationContext.Current, calledSyncContext);
}
public void ShouldReceiveDelegateOnDifferentThreadNonGeneric()
{
var completeEvent = new ManualResetEvent(false);
SynchronizationContext.SetSynchronizationContext(new SynchronizationContext());
SynchronizationContext calledSyncContext = null;
void action()
{
calledSyncContext = SynchronizationContext.Current;
completeEvent.Set();
}
IDelegateReference actionDelegateReference = new MockDelegateReference()
{
Target = (Action)action
};
var eventSubscription = new BackgroundEventSubscription(actionDelegateReference);
var publishAction = eventSubscription.GetExecutionStrategy();
Assert.NotNull(publishAction);
publishAction.Invoke(null);
completeEvent.WaitOne(5000);
Assert.NotEqual(SynchronizationContext.Current, calledSyncContext);
}
public void ShouldReceiveDelegateOnDifferentThread()
{
int calledThreadId = -1;
ManualResetEvent completeEvent = new ManualResetEvent(false);
Action<object> action = delegate
{
calledThreadId = Thread.CurrentThread.ManagedThreadId;
completeEvent.Set();
};
IDelegateReference actionDelegateReference = new MockDelegateReference() { Target = action };
IDelegateReference filterDelegateReference = new MockDelegateReference() { Target = (Predicate<object>)delegate { return true; } };
var eventSubscription = new BackgroundEventSubscription<object>(actionDelegateReference, filterDelegateReference);
var publishAction = eventSubscription.GetExecutionStrategy();
Assert.IsNotNull(publishAction);
publishAction.Invoke(null);
completeEvent.WaitOne(5000, false);
Assert.AreNotEqual(Thread.CurrentThread.ManagedThreadId, calledThreadId);
}
/// <summary>
/// Subscribes the given delegate reference to the SelectionChanging event. The delegate will be invoked on the specified thread.
/// </summary>
/// <param name="actionReference"></param>
/// <param name="threadOption"></param>
/// <returns></returns>
public SubscriptionToken Subscribe(IDelegateReference actionReference, ThreadOption threadOption)
{
IDelegateReference filterReference =
new DelegateReference(new Predicate <SelectionBase <T> >(_ => true), true);
EventSubscription <SelectionBase <T> > subscription;
switch (threadOption)
{
case ThreadOption.PublisherThread:
subscription = new EventSubscription <SelectionBase <T> >(actionReference, filterReference);
break;
case ThreadOption.BackgroundThread:
subscription = new BackgroundEventSubscription <SelectionBase <T> >(actionReference, filterReference);
break;
case ThreadOption.UIThread:
subscription = new DispatcherEventSubscription <SelectionBase <T> >(actionReference, filterReference, UIDispatcher);
break;
default:
throw new NotImplementedException("Thread Option not available."); // Impossible to happen
}
return(base.InternalSubscribe(subscription));
}
/// <summary>
/// Subscribes a delegate to an event.
/// </summary>
/// <param name="action">The delegate that gets executed when the event is published.</param>
/// <param name="threadOption">Specifies on which thread to receive the delegate callback.</param>
/// <param name="keepSubscriberReferenceAlive">When <see langword="true"/>, the <seealso cref="CompositeWpfEvent{TPayload}"/> keeps a reference to the subscriber so it does not get garbage collected.</param>
/// <param name="filter">Filter to evaluate if the subscriber should receive the event.</param>
/// <returns>A <see cref="SubscriptionToken"/> that uniquely identifies the added subscription.</returns>
/// <remarks>
/// If <paramref name="keepSubscriberReferenceAlive"/> is set to <see langword="false" />, <see cref="CompositeWpfEvent{TPayload}"/> will maintain a <seealso cref="WeakReference"/> to the Target of the supplied <paramref name="action"/> delegate.
/// If not using a WeakReference (<paramref name="keepSubscriberReferenceAlive"/> is <see langword="true" />), the user must explicitly call Unsubscribe for the event when disposing the subscriber in order to avoid memory leaks or unexepcted behavior.
///
/// The CompositeWpfEvent collection is thread-safe.
/// </remarks>
public virtual SubscriptionToken Subscribe(Action <TPayload> action, ThreadOption threadOption, bool keepSubscriberReferenceAlive, Predicate <TPayload> filter)
{
IDelegateReference actionReference = new DelegateReference(action, keepSubscriberReferenceAlive);
IDelegateReference filterReference = new DelegateReference(filter, keepSubscriberReferenceAlive);
EventSubscription <TPayload> subscription;
switch (threadOption)
{
case ThreadOption.PublisherThread:
subscription = new EventSubscription <TPayload>(actionReference, filterReference);
break;
case ThreadOption.BackgroundThread:
subscription = new BackgroundEventSubscription <TPayload>(actionReference, filterReference);
break;
case ThreadOption.UIThread:
subscription = new DispatcherEventSubscription <TPayload>(actionReference, filterReference, UIDispatcher);
break;
default:
subscription = new EventSubscription <TPayload>(actionReference, filterReference);
break;
}
return(base.InternalSubscribe(subscription));
}
/// <summary>
/// Subscribes a delegate to an event.
/// </summary>
/// <param name="action">The delegate that gets executed when the event is published.</param>
/// <param name="threadOption">Specifies on which thread to receive the delegate callback.</param>
/// <param name="keepSubscriberReferenceAlive">When <see langword="true"/>, the <see cref="PubSubEvent"/> keeps a reference to the subscriber so it does not get garbage collected.</param>
/// <returns>A <see cref="SubscriptionToken"/> that uniquely identifies the added subscription.</returns>
/// <remarks>
/// If <paramref name="keepSubscriberReferenceAlive"/> is set to <see langword="false" />, <see cref="PubSubEvent"/> will maintain a <see cref="WeakReference"/> to the Target of the supplied <paramref name="action"/> delegate.
/// If not using a WeakReference (<paramref name="keepSubscriberReferenceAlive"/> is <see langword="true" />), the user must explicitly call Unsubscribe for the event when disposing the subscriber in order to avoid memory leaks or unexpected behavior.
/// <para/>
/// The PubSubEvent collection is thread-safe.
/// </remarks>
public virtual SubscriptionToken Subscribe(Action action, ThreadOption threadOption, bool keepSubscriberReferenceAlive)
{
IDelegateReference actionReference = new DelegateReference(action, keepSubscriberReferenceAlive);
EventSubscription subscription;
switch (threadOption)
{
case ThreadOption.PublisherThread:
subscription = new EventSubscription(actionReference);
break;
case ThreadOption.BackgroundThread:
subscription = new BackgroundEventSubscription(actionReference);
break;
case ThreadOption.UIThread:
if (SynchronizationContext == null)
{
throw new InvalidOperationException(Resources.EventAggregatorNotConstructedOnUIThread);
}
subscription = new DispatcherEventSubscription(actionReference, SynchronizationContext);
break;
default:
subscription = new EventSubscription(actionReference);
break;
}
return(InternalSubscribe(subscription));
}
/// <summary>
/// Subscribes a delegate to an event.
/// </summary>
/// <param name="action">The delegate that gets executed when the event is published.</param>
/// <param name="threadOption">Specifies on which thread to receive the delegate callback.</param>
/// <param name="keepSubscriberReferenceAlive">When <see langword="true"/>, the <seealso cref="CompositeSynchronizationContextEvent{TPayload}"/> keeps a reference to the subscriber so it does not get garbage collected.</param>
/// <param name="filter">Filter to evaluate if the subscriber should receive the event.</param>
/// <returns>A <see cref="SubscriptionToken"/> that uniquely identifies the added subscription.</returns>
/// <remarks>
/// If <paramref name="keepSubscriberReferenceAlive"/> is set to <see langword="false" />, <see cref="CompositeSynchronizationContextEvent{TPayload}"/> will maintain a <seealso cref="WeakReference"/> to the Target of the supplied <paramref name="action"/> delegate.
/// If not using a WeakReference (<paramref name="keepSubscriberReferenceAlive"/> is <see langword="true" />), the user must explicitly call Unsubscribe for the event when disposing the subscriber in order to avoid memory leaks or unexepcted behavior.
///
/// The CompositeSynchronizationContextEvent collection is thread-safe.
/// </remarks>
public virtual SubscriptionToken Subscribe(Action <TPayload> action, ThreadOption threadOption, bool keepSubscriberReferenceAlive, Predicate <TPayload> filter)
{
IDelegateReference actionReference = new DelegateReference(action, keepSubscriberReferenceAlive);
IDelegateReference filterReference = new DelegateReference(filter, keepSubscriberReferenceAlive);
EventSubscription <TPayload> subscription;
switch (threadOption)
{
case ThreadOption.PublisherThread:
subscription = new EventSubscription <TPayload>(actionReference, filterReference);
break;
case ThreadOption.BackgroundThread:
subscription = new BackgroundEventSubscription <TPayload>(actionReference, filterReference);
break;
case ThreadOption.SubscriberAffinityThread:
subscription = new CompositeEventSubscription <TPayload>(actionReference, filterReference, SynchronizationContext.Current);
break;
default:
subscription = new EventSubscription <TPayload>(actionReference, filterReference);
break;
}
return(base.InternalSubscribe(subscription));
}
/// <summary>
/// Subscribe a <see cref="Action"/> to the <see cref="PubSubEvent"/>
/// </summary>
/// <param name="action">The <see cref="Action"/> that gets executed when the event is published</param>
/// <param name="threadOption">Specifies on which thread the received delegate is executed</param>
/// <param name="keepSubscriberReferenceAlive">If set to <see langword="true"/> the <see cref="PubSubEvent"/> will hold a strong reference to the action, otherwise a weak reference will be kept</param>
/// <returns>Returns <see cref="SubscriptionToken"/> that uniquely identifies the subscription</returns>
public virtual SubscriptionToken Subscribe(Action action, ThreadOption threadOption, bool keepSubscriberReferenceAlive)
{
var actionReference = new DelegateReference(action, keepSubscriberReferenceAlive);
EventSubscription subscription;
switch (threadOption)
{
case ThreadOption.BackgroundThread:
subscription = new BackgroundEventSubscription(actionReference);
break;
case ThreadOption.PublisherThread:
subscription = new EventSubscription(actionReference);
break;
case ThreadOption.UIThread:
if (SynchronizationContext == null)
{
throw new ArgumentNullException(nameof(SynchronizationContext));
}
subscription = new DispatcherEventSubscription(actionReference, SynchronizationContext);
break;
default:
subscription = new EventSubscription(actionReference);
break;
}
return(InternalSubscribe(subscription));
}
/// <summary>
/// Subscribes a delegate to an event.
/// </summary>
/// <param name="action">The delegate that gets executed when the event is published.</param>
/// <param name="threadOption">Specifies on which thread to receive the delegate callback.</param>
/// <param name="keepSubscriberReferenceAlive">When <see langword="true"/>, the <see cref="PubSubEvent{TPayload}"/> keeps a reference to the subscriber so it does not get garbage collected.</param>
/// <param name="filter">Filter to evaluate if the subscriber should receive the event.</param>
/// <returns>A <see cref="SubscriptionToken"/> that uniquely identifies the added subscription.</returns>
/// <remarks>
/// If <paramref name="keepSubscriberReferenceAlive"/> is set to <see langword="false" />, <see cref="PubSubEvent{TPayload}"/> will maintain a <see cref="WeakReference"/> to the Target of the supplied <paramref name="action"/> delegate.
/// If not using a WeakReference (<paramref name="keepSubscriberReferenceAlive"/> is <see langword="true" />), the user must explicitly call Unsubscribe for the event when disposing the subscriber in order to avoid memory leaks or unexpected behavior.
///
/// The PubSubEvent collection is thread-safe.
/// </remarks>
public virtual SubscriptionToken Subscribe(Action <TPayload> action, ThreadOption threadOption, bool keepSubscriberReferenceAlive, Predicate <TPayload> filter)
{
IDelegateReference actionReference = new DelegateReference(action, keepSubscriberReferenceAlive);
IDelegateReference filterReference;
if (filter != null)
{
filterReference = new DelegateReference(filter, keepSubscriberReferenceAlive);
}
else
{
filterReference = new DelegateReference(new Predicate <TPayload>(delegate { return(true); }), true);
}
EventSubscription <TPayload> subscription;
switch (threadOption)
{
case ThreadOption.PublisherThread:
subscription = new EventSubscription <TPayload>(actionReference, filterReference);
break;
case ThreadOption.BackgroundThread:
subscription = new BackgroundEventSubscription <TPayload>(actionReference, filterReference);
break;
case ThreadOption.UIThread:
if (SynchronizationContext == null)
{
throw new InvalidOperationException("Resources.EventAggregatorNotConstructedOnUIThread");
}
subscription = new DispatcherEventSubscription <TPayload>(actionReference, filterReference, SynchronizationContext);
break;
default:
subscription = new EventSubscription <TPayload>(actionReference, filterReference);
break;
}
return(base.InternalSubscribe(subscription));
}
/// <summary>
/// Subscribes a delegate to an event.
/// </summary>
/// <param name="action">The delegate that gets executed when the event is published.</param>
/// <param name="threadOption">Specifies on which thread to receive the delegate callback.</param>
/// <param name="keepSubscriberReferenceAlive">When <see langword="true"/>, the <see cref="CompositePresentationEvent{TPayload}"/> keeps a reference to the subscriber so it does not get garbage collected.</param>
/// <param name="filter">Filter to evaluate if the subscriber should receive the event.</param>
/// <returns>A <see cref="SubscriptionToken"/> that uniquely identifies the added subscription.</returns>
/// <remarks>
/// If <paramref name="keepSubscriberReferenceAlive"/> is set to <see langword="false" />, <see cref="CompositePresentationEvent{TPayload}"/> will maintain a <see cref="WeakReference"/> to the Target of the supplied <paramref name="action"/> delegate.
/// If not using a WeakReference (<paramref name="keepSubscriberReferenceAlive"/> is <see langword="true" />), the user must explicitly call Unsubscribe for the event when disposing the subscriber in order to avoid memory leaks or unexepcted behavior.
///
/// The CompositePresentationEvent collection is thread-safe.
/// </remarks>
public virtual SubscriptionToken Subscribe(Action <TPayload> action, ThreadOption threadOption, bool keepSubscriberReferenceAlive, Predicate <TPayload> filter)
{
IDelegateReference actionReference = new DelegateReference(action, keepSubscriberReferenceAlive);
IDelegateReference filterReference;
if (filter != null)
{
filterReference = new DelegateReference(filter, keepSubscriberReferenceAlive);
}
else
{
filterReference = new DelegateReference(new Predicate <TPayload>(delegate { return(true); }), true);
}
EventSubscription <TPayload> subscription;
switch (threadOption)
{
case ThreadOption.PublisherThread:
subscription = new EventSubscription <TPayload>(actionReference, filterReference);
break;
case ThreadOption.BackgroundThread:
subscription = new BackgroundEventSubscription <TPayload>(actionReference, filterReference);
break;
case ThreadOption.UIThread:
subscription = new PrismCommonLib.Composition.Events.DispatcherEventSubscription <TPayload>(actionReference, filterReference, UIDispatcher);
break;
default:
subscription = new EventSubscription <TPayload>(actionReference, filterReference);
break;
}
return(base.InternalSubscribe(subscription));
}
