Struct FuncAddEventHandler 

pub struct FuncAddEventHandler<TTarget, TEventArgs, TToken = Rc<dyn IDisposable>> { /* private fields */ }

An IAddEventHandler for the event name of sources of type TTarget, from a function that subscribes a handler and a function that removes it.

TTarget is the handle of the source (Ref<Button>, Rc<Model>). Deviation (DEVIATIONS.md, Behaviors): the reference removes a handler by delegate identity; a subscription of the port returns a token (TToken: a routed event handler token, a disposable), which is what remove takes.

Implementations

impl<TTarget, TEventArgs, TToken> FuncAddEventHandler<TTarget, TEventArgs, TToken>

where TTarget: Clone + 'static, TEventArgs: EventArgsValue + 'static, TToken: 'static,

pub fn new( name: &str, add: impl Fn(&TTarget, EventHandler<TEventArgs>) -> TToken + 'static, remove: impl Fn(&TTarget, TToken) + 'static, ) -> Self

Creates the handler of the event name: add subscribes a handler to a source, remove removes it with the token add returned.

Trait Implementations

impl<TTarget, TEventArgs, TToken> IAddEventHandler for FuncAddEventHandler<TTarget, TEventArgs, TToken>

where TTarget: Clone + 'static, TEventArgs: EventArgsValue + 'static, TToken: 'static,

fn matches(&self, source: &BoxedValue, event_name: &str) -> bool

Checks if the given source object and event name match the criteria for this event handler.

fn add_handler( &self, source: &BoxedValue, event_name: &str, handler: AddEventHandlerCallback, ) -> Option<Rc<dyn IDisposable>>

Registers an event handler for a specific event on the given source object. Disposing the returned handle removes it; None when the source or the event does not match.