public bool AddSource(IEventSource source)
{
if (this.sources_.ContainsKey(source))
{
return(false);
}
var subscription =
(source.AddListener(this.parent_.listener_,
this.eventType_,
this.convertSourceToThisEmit_) as EventSubscription <TEvent>) !;
this.sources_.TryAdd(source, subscription);
var contract = subscription.Contract !;
if (this.sourcesSuperContract_ == null ||
!this.sourcesSuperContract_.IsActive)
{
this.sourcesSuperContract_ =
IContractFactory.INSTANCE.NewSuperContract(contract);
}
else
{
this.sourcesSuperContract_.Add(contract);
}
contract.OnBreak += _ => this.RemoveSource(source);
return(true);
}