Struct Signal

pub struct Signal<T: Clone> { /* private fields */ }

Implements a broadcast-listener / callback / observable pattern.

Signal holds a list of subscriptions, each with a callback closure to run on the next broadcast.

As rt-graph uses GTK, the terminology (Signal struct and its method names) match GTK’s terms.

Implementations

impl<T: Clone> Signal<T>

pub fn new() -> Signal<T>

Construct a new Signal.

pub fn connect<F>(&mut self, callback: F) -> SubscriptionId

where F: Fn(T) + 'static,

Connect a new subscriber that will receive callbacks when the signal is raised.

Returns a SubscriptionId to disconnect the subscription when no longer required.

pub fn raise(&self, value: T)

Notify existing subscribers.

pub fn disconnect(&mut self, id: SubscriptionId)

Disconnect an existing subscription.