pub enum State {
    None,
    Some(Box<dyn Any>),
}
Expand description

The internal State of a widget.

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None

No meaningful internal state.

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Some(Box<dyn Any>)

Some meaningful internal state.

Implementations§

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impl State

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pub fn new<T>(state: T) -> Selfwhere
    T: 'static,

Creates a new State.

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pub fn downcast_ref<T>(&self) -> &Twhere
    T: 'static,

Downcasts the State to T and returns a reference to it.

Panics

This method will panic if the downcast fails or the State is State::None.

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pub fn downcast_mut<T>(&mut self) -> &mut Twhere
    T: 'static,

Downcasts the State to T and returns a mutable reference to it.

Panics

This method will panic if the downcast fails or the State is State::None.

Trait Implementations§

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impl Debug for State

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

Formats the value using the given formatter. Read more

Auto Trait Implementations§

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impl !RefUnwindSafe for State

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impl !Send for State

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impl !Sync for State

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impl Unpin for State

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impl !UnwindSafe for State

Blanket Implementations§

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impl<S, D, Swp, Dwp, T> AdaptInto<D, Swp, Dwp, T> for Swhere
    T: FloatComponent,
    Swp: WhitePoint,
    Dwp: WhitePoint,
    D: AdaptFrom<S, Swp, Dwp, T>,

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fn adapt_into_using<M>(self, method: M) -> Dwhere
    M: TransformMatrix<Swp, Dwp, T>,

Convert the source color to the destination color using the specified method
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fn adapt_into(self) -> D

Convert the source color to the destination color using the bradford method by default
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impl<T> Any for Twhere
    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 Twhere
    T: ?Sized,

const: unstable · source§

fn borrow(&self) -> &T

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

const: unstable · source§

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

const: unstable · source§

fn from(t: T) -> T

Returns the argument unchanged.

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

const: unstable · source§

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> IntoColor<U> for Twhere
    U: FromColor<T>,

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fn into_color(self) -> U

Convert into T with values clamped to the color defined bounds Read more
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impl<T, U> IntoColorUnclamped<U> for Twhere
    U: FromColorUnclamped<T>,

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fn into_color_unclamped(self) -> U

Convert into T. The resulting color might be invalid in its color space Read more
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impl<T, U> TryFrom<U> for Twhere
    U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
const: unstable · source§

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 Twhere
    U: TryFrom<T>,

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

The type returned in the event of a conversion error.
const: unstable · source§

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

Performs the conversion.
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impl<T, U> TryIntoColor<U> for Twhere
    U: TryFromColor<T>,

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fn try_into_color(self) -> Result<U, OutOfBounds<U>>

Convert into T, returning ok if the color is inside of its defined range, otherwise an OutOfBounds error is returned which contains the unclamped color. Read more
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impl<V, T> VZip<V> for Twhere
    V: MultiLane<T>,

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fn vzip(self) -> V