Struct Publisher

pub struct Publisher { /* private fields */ }

Publishes all Events to all subscribed Handlers that accept Events of that type

Examples

use gawk::{Event, Handler, Publisher};

#[derive(Copy, Clone)]
struct GamePaused {}

impl Event for GamePaused {}

let mut publisher = Publisher::default();
let pause_handler = Handler::new(|_event: GamePaused| println!("Game paused"));
let pause_handler_id = publisher.subscribe(pause_handler);

publisher.publish(GamePaused {});

publisher.unsubscribe(pause_handler_id);

Implementations

impl Publisher

pub fn subscribe<T>(&mut self, handler: T) -> usize

where T: DynHandle + 'static,

Subscribe a handler to the publisher so that the handler receives all published events. Returns the ID needed to unsubscribe the handler.

pub fn unsubscribe(&mut self, id: usize)

Remove a handler from the publisher so that it stops receiving events

pub fn publish<T>( &self, event: T, ) -> Result<(), Vec<Box<dyn Any + Send + 'static>>>

where T: DynEvent,

Publish an event to all subscribed handlers, utilizing as many threads as possible to run handlers in parallel

Trait Implementations

impl Default for Publisher

fn default() -> Publisher

Returns the “default value” for a type.