Struct Callback

pub struct Callback<IN> { /* private fields */ }

Callback is a wrapper around a function that is used to send messages to the Component.

IN is the type of the input of the wrapped function. Meaning if we would like to send a message to the component we need to provide input of type IN. Callback should be used for defining child to parent component communication and subscribing to HTML events.

Implementations

impl<IN> Callback<IN>

pub fn new<F>(wrapper: F) -> Self

where F: Fn(IN) + 'static,

Function that creates a new instance of the Callback. Using a Callback defined by this function will not send messages to the component. It should be used only if the Callback is to send messages to the father component and this logic should be contained in wrapper argument function. If sending the message to the current component is the goal create_callback function should be used.

pub fn emit(&self, input: IN)

Function that calls the Callback using the provided input.

Trait Implementations

impl<IN> Clone for Callback<IN>

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<IN> Hash for Callback<IN>

fn hash<H: Hasher>(&self, state: &mut H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.