Trait SubjectActor 

pub trait SubjectActor<Event>: Actor
where
    Event: Message + Clone,
{
    // Required method
    fn observers_mut(&mut self) -> &mut ObserverSet<Event>;

    // Provided methods
    fn register_observer(&mut self, observer: Recipient<Event>) { ... }
    fn unregister_observer(&mut self, observer: Recipient<Event>) { ... }
    fn notify_observers(
        &mut self,
        event: Event,
    ) -> impl Future<Output = ()> + Send { ... }
    fn try_notify_observers(&mut self, event: Event) { ... }
}

Available on crate feature observer only.

Describes the behavior of an actor which works as a subject of the given event type.

An actor could be the subject of multiple event types, just implement this trait multiple times.

Required Methods

fn observers_mut(&mut self) -> &mut ObserverSet<Event>

Returns a mutable reference to the set of observers for this event type.

Provided Methods

fn register_observer(&mut self, observer: Recipient<Event>)

Registers an observer.

fn unregister_observer(&mut self, observer: Recipient<Event>)

Unregisters an observer.

fn notify_observers(&mut self, event: Event) -> impl Future<Output = ()> + Send

Notifies all observers.

This method will wait until there is capacity in the mailbox of the observer.

fn try_notify_observers(&mut self, event: Event)

Notifies all observers.

This method will return immediately if there is no capacity in the mailbox of the observer.

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementors