Struct Subscription 

pub struct Subscription { /* private fields */ }

RAII subscription handle. Unsubscribes from the event bus on drop.

Acquire in Mode::on_activate via ctx.events_handle() + EventBus::subscribe_typed; store in the mode’s Guard struct so deactivation cleanup is compiler-enforced. Modes with conditional subscriptions (e.g. skip when no URI) use Option<Subscription>.

MO.4.c: replaces the _private:() stub; Mode::subscriptions() removed — on_activate + Guard IS the subscription mechanism.

Implementations

impl Subscription

pub fn new(bus: Arc<EventBus>, id: SubscriptionId) -> Self

Wrap the id returned by one of bus’s subscribe calls so that dropping this value calls EventBus::unsubscribe on it.

Takes an owned Arc because the handle outlives the activation that created it: it is moved into the mode’s Guard, and the Guard is dropped whenever the mode deactivates.

Trait Implementations

impl Drop for Subscription

fn drop(&mut self)

Executes the destructor for this type.

fn pin_drop(self: Pin<&mut Self>)

🔬This is a nightly-only experimental API. (pin_ergonomics)

Execute the destructor for this type, but different to Drop::drop, it requires self to be pinned.