Enum RequestedObject 

pub enum RequestedObject<T: Send + 'static> {
    Pending {
        rx: Receiver<T>,
        previous: Option<T>,
    },
    Completed(T),
}

A handle to an object that is requested asynchronously.

Note: this object cannot be Clone because it uses a one-shot channel to track completion of the async operation.

Variants

Pending

Fields

rx: Receiver<T>

previous: Option<T>

Completed(T)

Implementations

impl<T: Send + 'static> RequestedObject<T>

pub fn new<F>( runtime: &AsyncRuntimeHandle, func: F, previous: Option<T>, ) -> Self

where T: Debug, F: Future<Output = T> + WasmNotSend + 'static,

Create a new Self with the given future.

Optionally retains a previous value while the future is pending.

pub fn new_with_repaint<F>( runtime: &AsyncRuntimeHandle, egui_ctx: Context, func: F, ) -> Self

where T: Debug, F: Future<Output = T> + WasmNotSend + 'static,

Create a new Self with the given future and automatically request a repaint of the UI when the future completes.

pub fn refresh_with_previous_and_repaint<F>( self, runtime: &AsyncRuntimeHandle, egui_ctx: Context, func: F, ) -> Self

where T: Debug, F: Future<Output = T> + WasmNotSend + 'static,

Refresh the requested object, retaining the latest available object while the new request is pending.

pub fn on_frame_start(&mut self)

Check if the future has completed and, if so, update our state to Self::Completed.

pub fn try_as_ref(&self) -> Option<&T>

Get a reference to the latest available object.

pub fn take_latest(self) -> Option<T>

Take the latest available object, if any.

Trait Implementations

impl<T: Debug + Send + 'static> Debug for RequestedObject<T>

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

Formats the value using the given formatter.