FocusTraversal

rat_widget::event

Struct FocusTraversal 

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pub struct FocusTraversal<'a>(pub &'a Focus);
Expand description

Special focus-traversal.

There are some widgets that have special keys that interact with focus. This marks an event-handler for such a case and provides it with the valid Focus instance for the application.

eg:

  • Leaving a textarea with some navigation key other than tab.

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§0: &'a Focus

Trait Implementations§

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impl<'a> HandleEvent<Event, FocusTraversal<'a>, Outcome> for TextAreaState

Adds focus-handling for a text-area.

Regular focus traversal with Tab is not possible for a TextArea, but this adds Esc and SHIFT-Esc as special traversal keys.

This is a secondary event-handler and doesn’t forward to Regular event-handling.

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fn handle(&mut self, event: &Event, qualifier: FocusTraversal<'a>) -> Outcome

Handle an event. Read more

Auto Trait Implementations§

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impl<'a> Freeze for FocusTraversal<'a>

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impl<'a> !RefUnwindSafe for FocusTraversal<'a>

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impl<'a> !Send for FocusTraversal<'a>

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impl<'a> !Sync for FocusTraversal<'a>

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impl<'a> Unpin for FocusTraversal<'a>

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impl<'a> !UnwindSafe for FocusTraversal<'a>

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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

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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> IntoEither for T

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fn into_either(self, into_left: bool) -> Either<Self, Self>

Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
where F: FnOnce(&Self) -> bool,

Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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impl<T, U> TryFrom<U> for 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.