Struct EventRegistry 

pub struct EventRegistry { /* private fields */ }

Thread-safe registration and dispatch container for lifecycle callbacks.

Dispatch clones one Arc snapshot without allocating and releases the lock before invoking callbacks. A dispatch already in progress may finish with its original snapshot; registration and removal affect future dispatches. Nested dispatch observes the current snapshot at the time it starts.

Implementations

impl EventRegistry

pub fn on_event<F>(&self, handler: F) -> Result<(), EventRegistrationError>

where F: Fn(&DesktopEvent) -> EventResponse + Send + Sync + 'static,

Register a callback that remains installed until the registry closes.

Errors

Returns EventRegistrationError when the registry reached its handler cap, has closed, or its state is unavailable after a callback panic.

pub fn subscribe<F>( &self, handler: F, ) -> Result<EventSubscription, EventRegistrationError>

where F: Fn(&DesktopEvent) -> EventResponse + Send + Sync + 'static,

Register a callback removed automatically when its subscription drops.

Errors

Returns EventRegistrationError when the registry reached its handler cap, has closed, or its state is unavailable after a callback panic.

pub fn dispatch(&self, event: &DesktopEvent) -> EventResponse

Dispatch an event and report cancellation.

Every handler in the dispatch snapshot observes the event even after one cancels it, so the outcome does not depend on registration order.

Trait Implementations

impl Clone for EventRegistry

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Default for EventRegistry

fn default() -> Self

Returns the “default value” for a type.