Struct Emitter 

pub struct Emitter<'a, 'e, E, A> { /* private fields */ }

A child-side handle that fires one event kind.

Several emitters over the same sink can be alive at once, which is what makes #[event] on_ok / #[event] on_cancel usable side by side. A is the payload type and make is the enum variant constructor, so the child writes on_ok.emit(()) instead of naming the generated event enum.

Implementations

impl<'a, 'e, E, A> Emitter<'a, 'e, E, A>

pub fn new(sink: &'a EventSink<'e, E>, make: fn(A) -> E) -> Self

Build an emitter over a shared event sink.

make is the variant constructor #[component] generated for this event, e.g. DialogEvent::Ok.

pub fn emit(&self, payload: A)

Fire one event into the parent’s fused closure.

Panics

Panics if called re-entrantly (an event fired from inside a handler for the same child). Direct expansion never does this.

Trait Implementations

impl<E, A> Clone for Emitter<'_, '_, E, A>

fn clone(&self) -> Self

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<E, A> Copy for Emitter<'_, '_, E, A>