/// <summary>
/// Calls all the execution strategies exposed by the list of <see cref="IEventSubscription"/>.
/// </summary>
/// <param name="publisherAddress">Specfied publisher address, can be null</param>
/// <param name="arguments">The arguments that will be passed to the listeners.</param>
/// <remarks>Before executing the strategies, this class will prune all the subscribers from the
/// list that return a <see langword="null" /> <see cref="Action{T}"/> when calling the
/// <see cref="IEventSubscription.GetExecutionStrategy"/> method.</remarks>
protected virtual void InternalPublish(EventCommunicatorAddress publisherAddress, EventCommunicatorsRelationship publishTo, params object[] arguments)
{
List<Action<object[]>> executionStrategies = pruneAndReturnStrategies(publisherAddress, publishTo);
foreach (var executionStrategy in executionStrategies)
{
executionStrategy(arguments);
}
}
private List<Action<object[]>> pruneAndReturnStrategies(EventCommunicatorAddress publisherAddress, EventCommunicatorsRelationship publishTo)
{
var returnList = new List<Action<object[]>>();
lock (Subscriptions)
{
for (var i = Subscriptions.Count - 1; i >= 0; i--)
{
Action<object[]> listItem =
_subscriptions[i].GetExecutionStrategy(publisherAddress, publishTo);
if (listItem == null)
{
// Prune from main list. Log?
_subscriptions.RemoveAt(i);
}
else
{
returnList.Add(listItem);
}
}
}
return returnList;
}
private void subscribeToEvent(EventCommunicatorsRelationship relationship)
{
var msg = _eventAggregator.GetEvent<Event<MockEventForChildCommunicator>>();
msg.Subscribe(x => LastPublishedEvent = x, this, relationship);
}
public Action<object[]> GetExecutionStrategy(EventCommunicatorAddress publisherAddress, EventCommunicatorsRelationship publishTo)
{
return GetExecutionStrategy();
}
private void publishToEvent(EventCommunicatorsRelationship relationship)
{
var msg = _eventAggregator.GetEvent<Event<MockEventForChildCommunicator>>();
msg.Publish(this, new MockEventForChildCommunicator(this), relationship);
}
