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AppContext

Struct AppContext 

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pub struct AppContext { /* private fields */ }
Expand description

Weak access to the application that owns a node. Cloning this context does not keep an application active. This context stays local and provides no dependency lookup.

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impl AppContext

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pub fn async_scope(&self) -> Result<AsyncScope, AsyncError>

Application lifetime, independent of individual mounted views.

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pub fn set_task_error_sink( &self, sink: impl Fn(String) + 'static, ) -> Result<(), AsyncError>

Observe unhandled task panics on the UI thread, including dropped controls. Reporting continues while managed shutdown retains the application. The sink must not touch detached UI state once the phase is Closing.

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pub fn id(&self) -> Option<u64>

Process-local identity of this application instance while retained.

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pub fn phase(&self) -> AppPhase

Current lifecycle state; a released owner reports Closed.

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pub fn closed(&self) -> AppClosed ⓘ

Observe disposal completion without driving cleanup. The host’s wake scheduler keeps cleanup progressing even when this future is not polled.

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pub fn target(&self) -> Result<TargetInfo, AsyncError>

Target facts selected by the owning host.

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impl AsyncScopeSource for AppContext

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impl Clone for AppContext

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fn clone(&self) -> AppContext

Returns a duplicate of the value. Read more
1.0.0 (const: unstable) · Source§

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

Performs copy-assignment from source. Read more

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Blanket Implementations§

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

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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

Mutably borrows from an owned value. Read more
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impl<ST, DT> CastableFrom<ST, Initialized, Initialized> for DT
where ST: ?Sized, DT: ?Sized,

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impl<ST, DT> CastableFrom<ST, Uninit, Uninit> for DT
where ST: ?Sized, DT: ?Sized,

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impl<T> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dest. Read more
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impl<T> Downcast<T> for T

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fn downcast(&self) -> &T

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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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

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fn into(self) -> U

Calls U::from(self).

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

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impl<T> Read<Exclusive, BecauseExclusive> for T
where T: ?Sized,

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impl<T> RoundFrom<T> for T

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fn round_from(x: T) -> T

Performs the conversion.
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impl<T, U> RoundInto<U> for T
where U: RoundFrom<T>,

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fn round_into(self) -> U

Performs the conversion.
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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = !

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, !>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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impl<S, T> Upcast<T> for S
where T: UpcastFrom<S> + ?Sized, S: ?Sized,

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fn upcast(&self) -> &T
where Self: ErasableGeneric, T: Sized + ErasableGeneric<Repr = Self::Repr>,

Perform a zero-cost type-safe upcast to a wider ref type within the Wasm bindgen generics type system. Read more
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fn upcast_into(self) -> T
where Self: Sized + ErasableGeneric, T: Sized + ErasableGeneric<Repr = Self::Repr>,

Perform a zero-cost type-safe upcast to a wider type within the Wasm bindgen generics type system. Read more
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impl<T> Upcast<T> for T

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fn upcast(&self) -> Option<&T>