Struct freya::prelude::EventHandler

pub struct EventHandler<'bump, T = ()> { /* private fields */ }

The callback type generated by the rsx! macro when an on field is specified for components.

This makes it possible to pass move |evt| {} style closures into components as property fields.

Example

rsx!{
    MyComponent { onclick: move |evt| tracing::debug!("clicked") }
}

#[derive(Props)]
struct MyProps<'a> {
    onclick: EventHandler<'a, MouseEvent>,
}

fn MyComponent(cx: Scope<'a, MyProps<'a>>) -> Element {
    cx.render(rsx!{
        button {
            onclick: move |evt| cx.props.onclick.call(evt),
        }
    })
}

Implementations

impl<T> EventHandler<'_, T>

pub fn call(&self, event: T)

Call this event handler with the appropriate event type

This borrows the event using a RefCell. Recursively calling a listener will cause a panic.

pub fn release(&self)

Forcibly drop the internal handler callback, releasing memory

This will force any future calls to “call” to not doing anything

Trait Implementations

impl<T> Default for EventHandler<'_, T>

fn default() -> EventHandler<'_, T>

Returns the “default value” for a type.