Struct Callback

pub struct Callback<F: 'static + ?Sized> { /* private fields */ }

A Callback<F> is a wrapper around a wasm_bindgen::prelude::Closure<F> which supports TODO:

Implementations

impl<F: 'static + ?Sized> Callback<F>

pub fn new<X>(closure: X) -> Callback<F>

where Self: From<X>,

pub fn as_function(&self) -> Function

pub fn as_closure(&self) -> Rc<Closure<F>>

impl Callback<dyn FnMut(JsValue, JsValue)>

pub fn default_node() -> Self

Creates a node-style callback with the args (err, data). If err is null or undefined, the Result is Ok(data). Otherwise, it is Err(err).

Trait Implementations

impl<F: Debug + 'static + ?Sized> Debug for Callback<F>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for Callback<dyn FnMut(JsValue)>

The Default impl for Callback creates a single-arg callback, whose Result is always Ok.

fn default() -> Self

Returns the “default value” for a type.

impl<A> From<A> for Callback<dyn FnMut()>

where A: 'static + FnOnce() -> Result<JsValue, JsValue>,

fn from(cb: A) -> Self

Converts to this type from the input type.

impl<A> From<A> for Callback<dyn FnMut(JsValue)>

where A: 'static + FnOnce(JsValue) -> Result<JsValue, JsValue>,

fn from(cb: A) -> Self

Converts to this type from the input type.

impl<A> From<A> for Callback<dyn FnMut(JsValue, JsValue)>

where A: 'static + FnOnce(JsValue, JsValue) -> Result<JsValue, JsValue>,

fn from(cb: A) -> Self

Converts to this type from the input type.

impl<A> From<A> for Callback<dyn FnMut(JsValue, JsValue, JsValue)>

where A: 'static + FnOnce(JsValue, JsValue, JsValue) -> Result<JsValue, JsValue>,

fn from(cb: A) -> Self

Converts to this type from the input type.

impl<A> From<A> for Callback<dyn FnMut(JsValue, JsValue, JsValue, JsValue)>

where A: 'static + FnOnce(JsValue, JsValue, JsValue, JsValue) -> Result<JsValue, JsValue>,

fn from(cb: A) -> Self

Converts to this type from the input type.

impl<A> From<A> for Callback<dyn FnMut(JsValue, JsValue, JsValue, JsValue, JsValue)>

where A: 'static + FnOnce(JsValue, JsValue, JsValue, JsValue, JsValue) -> Result<JsValue, JsValue>,

fn from(cb: A) -> Self

Converts to this type from the input type.

impl<A> From<A> for Callback<dyn FnMut(JsValue, JsValue, JsValue, JsValue, JsValue, JsValue)>

where A: 'static + FnOnce(JsValue, JsValue, JsValue, JsValue, JsValue, JsValue) -> Result<JsValue, JsValue>,

fn from(cb: A) -> Self

Converts to this type from the input type.

impl<A> From<A> for Callback<dyn FnMut(JsValue, JsValue, JsValue, JsValue, JsValue, JsValue, JsValue)>

where A: 'static + FnOnce(JsValue, JsValue, JsValue, JsValue, JsValue, JsValue, JsValue) -> Result<JsValue, JsValue>,

fn from(cb: A) -> Self

Converts to this type from the input type.

impl<F: 'static + ?Sized> Future for Callback<F>

Standard Future impl for Callback

type Output = Result<JsValue, JsValue>

The type of value produced on completion.

fn poll(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Self::Output>

Attempts to resolve the future to a final value, registering the current task for wakeup if the value is not yet available.