Struct rui::StateHandle

pub struct StateHandle<S> { /* private fields */ }

Weak reference to app state.

To get the underlying value, you’ll need a Context, which is passed to all event handlers, and functions passed to state.

Implementations

impl<S: 'static> StateHandle<S>

pub fn new(id: ViewId) -> Self

pub fn setter(self) -> impl Fn(S, &mut Context)

Makes it convenient to get a function to set the value.

Trait Implementations

impl<S: 'static> Binding<S> for StateHandle<S>

fn get<'a>(&self, cx: &'a Context) -> &'a S

fn get_mut<'a>(&self, cx: &'a mut Context) -> &'a mut S

fn with<T>(&self, cx: &Context, f: impl FnOnce(&S) -> T) -> T

fn with_mut<T>(&self, cx: &mut Context, f: impl FnOnce(&mut S) -> T) -> T

impl<S> Clone for StateHandle<S>

fn clone(&self) -> Self

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<S> Index<StateHandle<S>> for Contextwhere S: 'static,

type Output = S

The returned type after indexing.

fn index(&self, index: StateHandle<S>) -> &Self::Output

Performs the indexing (container[index]) operation.

impl<S> IndexMut<StateHandle<S>> for Contextwhere S: 'static,

fn index_mut(&mut self, index: StateHandle<S>) -> &mut Self::Output

Performs the mutable indexing (container[index]) operation.

impl<S> Copy for StateHandle<S>