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EventHandler

ove::lvgl

Struct EventHandler 

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pub struct EventHandler<T: 'static> { /* private fields */ }
Expand description

Static descriptor for a stateful event handler.

Bundles a &'static InitCell<T> of shared state with a fn(&T, EventCtx) user callback. Declare with the crate::event_handler! macro and pass to EventTarget::on_with / EventTarget::on_clicked_with.

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impl<T: 'static> EventHandler<T>

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pub const fn new(cell: &'static InitCell<T>, user: fn(&T, EventCtx<'_>)) -> Self

Construct a handler descriptor — usable in static declarations.

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impl<T: Send + Sync + 'static> Sync for EventHandler<T>

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impl<T> Freeze for EventHandler<T>

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impl<T> !RefUnwindSafe for EventHandler<T>

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impl<T> Send for EventHandler<T>
where T: Send + Sync,

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impl<T> Unpin for EventHandler<T>

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impl<T> UnsafeUnpin for EventHandler<T>

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impl<T> !UnwindSafe for EventHandler<T>

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

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type Error = Infallible

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

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.