Struct Callback 

pub struct Callback { /* private fields */ }

Stable, comparable callback handle for Fn().

Callback is a stable handle to the latest callback closure created at the same build call site.

Callback identity does not change when the captured closure changes during recomposition. As a result, callback updates do not force prop mismatches or replay invalidation. Event handlers always invoke the latest closure stored behind the handle.

Create callbacks only during a Tessera component build.

Implementations

impl Callback

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

where F: Fn() + Send + Sync + 'static,

Create a callback handle from a closure.

This must be called during a component build.

pub const fn noop() -> Self

Create an empty callback.

pub fn call(&self)

Invoke the callback.

Trait Implementations

impl Clone for Callback

fn clone(&self) -> Callback

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Default for Callback

fn default() -> Self

Returns the “default value” for a type.

impl From<Callback> for RenderSlot

fn from(callback: Callback) -> Self

Converts to this type from the input type.

impl<F> From<F> for Callback

where F: Fn() + Send + Sync + 'static,

fn from(handler: F) -> Self

Converts to this type from the input type.

impl PartialEq for Callback

fn eq(&self, other: &Self) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for Callback

impl Eq for Callback