public void InstanceMethodUnsubscribeShouldBeSupported()
{
var listener = new GenericHandler <object>();
IEventAggregator eventAggregator = CreateEventAggregator();
var subscriber = eventAggregator.Subscribe <string>(listener.Handle, false);
eventAggregator.Contains(subscriber).ShouldBeTrue();
eventAggregator.GetSubscribers().Count.ShouldEqual(1);
eventAggregator.Unsubscribe <object>(listener.Handle);
eventAggregator.GetSubscribers().ShouldBeEmpty();
}
public void ClearTest()
{
var listener = new GenericHandler <object>();
IEventAggregator eventAggregator = CreateEventAggregator();
var subscriber = eventAggregator.Subscribe(listener);
eventAggregator.Contains(subscriber).ShouldBeTrue();
eventAggregator.GetSubscribers().Count.ShouldEqual(1);
eventAggregator.UnsubscribeAll();
eventAggregator.GetSubscribers().Count.ShouldEqual(0);
}
public void AddWeakListenerTest()
{
var listener = new GenericHandler <object>();
IEventAggregator eventAggregator = CreateEventAggregator();
var subscriber = eventAggregator.Subscribe(listener);
eventAggregator.Contains(subscriber).ShouldBeTrue();
eventAggregator.GetSubscribers().Count.ShouldEqual(1);
listener = null;
GC.Collect();
GC.WaitForPendingFinalizers();
GC.Collect();
eventAggregator.GetSubscribers().Count.ShouldEqual(0);
}
public void AddInvalidListenerTest()
{
IEventAggregator eventAggregator = CreateEventAggregator();
eventAggregator.Subscribe(new object()).ShouldBeNull();
eventAggregator.GetSubscribers().ShouldBeEmpty();
}
private void DisposeInternal()
{
if (Settings.DisposeCommands)
{
ReflectionExtensions.DisposeCommands(this);
}
this.ClearBusy();
ClearPropertyChangedSubscribers();
if (InitializeEventAggregator(false))
{
var toRemove = _localEventAggregator.GetSubscribers();
for (int index = 0; index < toRemove.Count; index++)
{
Unsubscribe(toRemove[index]);
}
}
IViewManager viewManager;
if (IocContainer.TryGet(out viewManager))
{
viewManager.CleanupViewAsync(this);
}
if (Settings.DisposeIocContainer && _iocContainer != null && !ReferenceEquals(_iocContainer, ServiceProvider.IocContainer))
{
_iocContainer.Dispose();
}
Settings.Metadata.Clear();
ServiceProvider.AttachedValueProvider.Clear(this);
Tracer.TraceViewModel(AuditAction.Disposed, this);
}
private void DisposeInternal()
{
this.ClearBusy();
ClearPropertyChangedSubscribers();
if (InitializeEventAggregator(false))
{
var toRemove = _localEventAggregator.GetSubscribers();
for (int index = 0; index < toRemove.Count; index++)
{
Unsubscribe(toRemove[index]);
}
}
IViewManager viewManager;
if (IocContainer.TryGet(out viewManager))
{
viewManager.CleanupViewAsync(this);
}
Settings.Metadata.Clear();
ServiceProvider.AttachedValueProvider.Clear(this);
CleanupWeakReference();
Tracer.TraceViewModel(ViewModelLifecycleType.Disposed, this);
}
public void AddWeakContainerListenerTest()
{
var listener = new TestObservable();
IEventAggregator eventAggregator = CreateEventAggregator();
eventAggregator.Subscribe(listener);
eventAggregator.GetSubscribers().Count.ShouldEqual(0);
}
public void WeakMethodShouldBeSupported()
{
var message = new object();
var listener = new GenericHandler <object>();
IEventAggregator eventAggregator = CreateEventAggregator();
var subscriber = eventAggregator.Subscribe <object>(listener.Handle);
eventAggregator.Contains(subscriber).ShouldBeTrue();
eventAggregator.GetSubscribers().Count.ShouldEqual(1);
eventAggregator.Publish(eventAggregator, message);
listener.Sender.ShouldEqual(eventAggregator);
listener.Message.ShouldEqual(message);
listener.Count.ShouldEqual(1);
listener = null;
GC.Collect();
GC.WaitForPendingFinalizers();
GC.Collect();
eventAggregator.GetSubscribers().ShouldBeEmpty();
}
public void NonWeakLambdaMethodShouldBeSupported()
{
var message = new object();
IEventAggregator eventAggregator = CreateEventAggregator();
bool isInvoked = false;
var subscriber = eventAggregator.Subscribe <object>((arg1, arg2) =>
{
arg1.ShouldEqual(eventAggregator);
arg2.ShouldEqual(message);
isInvoked = true;
}, false);
eventAggregator.Contains(subscriber).ShouldBeTrue();
eventAggregator.GetSubscribers().Count.ShouldEqual(1);
eventAggregator.Publish(eventAggregator, message);
isInvoked.ShouldBeTrue();
}
public static IList <object> GetObservers(this IEventAggregator aggregator)
{
return(aggregator.GetSubscribers().Select(subscriber => subscriber.Target).ToList());
}