Struct EventBus 

pub struct EventBus { /* private fields */ }

事件总线

Implementations

impl EventBus

pub fn new() -> Self

pub fn subscribe<F>(&self, event_type: &str, handler: F) -> HandlerId

where F: Fn(&Event) + Send + Sync + 'static,

订阅事件，返回 handler ID 用于取消订阅

pub fn unsubscribe(&self, event_type: &str, handler_id: HandlerId) -> bool

取消订阅

pub fn unsubscribe_all(&self, event_type: &str) -> usize

取消某事件类型的所有订阅

pub fn publish(&self, event: &Event)

发布事件

pub fn subscriber_count(&self, event_type: &str) -> usize

获取某事件类型的订阅数量

pub fn total_subscribers(&self) -> usize

获取所有事件类型的订阅总数

Trait Implementations

impl Default for EventBus

fn default() -> Self

Returns the “default value” for a type.