#89 - RegisterState Subscriptions to Event Aggregator

[DamianSuess]

Details

Adds the ability to subscribe to EventAggregator message types from the RegisterState and RegisterSubState methods.

    machine
      .AddContext(ctxProperties)
      .RegisterState<State1>(StateId.State1, StateId.State2, subscriptionTypes: [typeof(UnlockResponse)])
      // ...
      .RegisterSubState<State2_Sub2_Sub1>(StateId.State2_Sub2_Sub1, parentStateId: StateId.State2_Sub2, onSuccess: StateId.State2_Sub2_Sub2, subscriptionTypes: [typeof(UnlockResponse), typeof(CloseResponse)])

The is the equivalent to subscribing from the State itself:

public class State1() : ICommandState<StateId>
{
  public override IReadOnlyCollection<Type> SubscribedMessageTypes =>
    [ typeof(UnlockResponse) ];

  public Task OnEntering(Context<StateId> context) => Task.CompletedTask;

  public Task OnEnter(Context<StateId> context) => Task.CompletedTask;

  public Task OnMessage(Context<StateId> context, object message) { ... }

  public Task OnTimeout(Context<StateId> context) { ... }

  public Task OnExit(Context<StateId> context) => Task.CompletedTask;
}

Linked To Issue/Feature

• [v2.3] RegisterState Parameter for Message Type Subscriptions #89