Struct event_emitter::EventEmitter

pub struct EventEmitter<T: Hash + Eq, U> { /* fields omitted */ }

Node.js-like event emitter.

Example

#[derive(Hash, Eq, PartialEq)]
enum Event {
    A,
    B,
}

let mut emitter = EventEmitter::new();

emitter.on(Event::A, |&data| {
    assert_eq!("data for A", data);
});

emitter.on(Event::B, |&data| {
    assert_eq!("data for B", data);
});

emitter.emit(Event::A, "data for A");
emitter.emit(Event::B, "data for B");

Methods

impl<T: Hash + Eq, U> EventEmitter<T, U>

pub fn new() -> Self

Creates a new instance of EventEmitter.

pub fn on<F>(&mut self, event: T, handler: F) where
    F: Fn(&U) + 'static, 

Registers function handler as a listener for event. There may be multiple listeners for a single event.

pub fn emit(&self, event: T, payload: U)

Invokes all listeners of event, passing a reference to payload as an argument to each of them.

Trait Implementations

impl<T: Hash + Eq, U> Default for EventEmitter<T, U>

fn default() -> Self

Returns the "default value" for a type.