Struct DelegateFuture

pub struct DelegateFuture<'a, O, H, R>where
    R: Send,
{ /* private fields */ }

Expand description

This future executes a closure on the GUI thread and returns the result.

Trait Implementations§

impl<'a, O, H, R> Future for DelegateFuture<'a, O, H, R>
where O: HasHandle<H> + HasHandle<ApplicationHandle> + Clone, H: 'static, R: Send + 'static,

type Output = Result<R, DelegateError>

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. Read more

impl<'a, O, H, R> Send for DelegateFuture<'a, O, H, R>
where R: Send,

§Safety

DelegateFuture by itself is not send. This is because we keep a handle H, which is not necessarily Send. However, because the closure only executes on the GUI thread, and because the handle is only provided to the closure that will be executed on the GUI thread, this should be fine.

impl<'a, O, H, R> Unpin for DelegateFuture<'a, O, H, R>
where R: Send,

Auto Trait Implementations§

impl<'a, O, H, R> Freeze for DelegateFuture<'a, O, H, R>
where O: Freeze, R: Freeze,

impl<'a, O, H, R> !RefUnwindSafe for DelegateFuture<'a, O, H, R>

impl<'a, O, H, R> !Sync for DelegateFuture<'a, O, H, R>

impl<'a, O, H, R> !UnwindSafe for DelegateFuture<'a, O, H, R>

Blanket Implementations§

impl<T> Any for T
where T: 'static + ?Sized,

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

impl<T> Borrow<T> for T
where T: ?Sized,

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

impl<T> BorrowMut<T> for T
where T: ?Sized,

fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more

impl<T> From<T> for T

fn from(t: T) -> T

Returns the argument unchanged.

impl<H> HasHandle<H> for H

fn handle(&self) -> &H

impl<T, U> Into<U> for T
where U: From<T>,

fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

impl<F> IntoFuture for F
where F: Future,

type Output = <F as Future>::Output

The output that the future will produce on completion.

type IntoFuture = F

Which kind of future are we turning this into?

fn into_future(self) -> <F as IntoFuture>::IntoFuture

Creates a future from a value. Read more

impl<T, U> TryFrom<U> for T
where U: Into<T>,

type Error = Infallible

The type returned in the event of a conversion error.

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.

impl<F, T, E> TryFuture for F
where F: Future<Output = Result<T, E>> + ?Sized,

type Ok = T

The type of successful values yielded by this future

type Error = E

The type of failures yielded by this future

fn try_poll( self: Pin<&mut F>, cx: &mut Context<'_>, ) -> Poll<<F as Future>::Output>

Poll this TryFuture as if it were a Future. Read more

impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.

impl<V, T> VZip<V> for T
where V: MultiLane<T>,

fn vzip(self) -> V