Enum Action

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pub enum Action<Message> {
    None,
    ScrollTo(AbsoluteOffset<Option<f32>>, Animation),
    SnapTo(RelativeOffset<Option<f32>>, Animation),
    Custom(Message),
}

Expand description

An action to perform in response to a Scroll.

This is the return type of the Scrollable::on_scroll handler. It lets the handler react to a scroll notification by driving the Scrollable further, or by publishing a message.

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None

Do nothing.

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ScrollTo(AbsoluteOffset<Option<f32>>, Animation)

Scroll to the given AbsoluteOffset, with the given Animation.

An axis set to None keeps its current position.

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SnapTo(RelativeOffset<Option<f32>>, Animation)

Snap to the given RelativeOffset, with the given Animation.

An axis set to None keeps its current position.

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Custom(Message)

Publish the given message.

Trait Implementations§

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impl<Message> Debug for Action<Message>
where Message: Debug,

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

Formats the value using the given formatter. Read more

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impl<Message> From<Message> for Action<Message>

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fn from(message: Message) -> Action<Message>

Converts to this type from the input type.

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impl<Message> From<Option<Message>> for Action<Message>

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fn from(message: Option<Message>) -> Action<Message>

Converts to this type from the input type.

Auto Trait Implementations§

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impl<Message> UnwindSafe for Action<Message>
where Message: UnwindSafe,

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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> Downcast<T> for T

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fn downcast(&self) -> &T

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impl<T> Downcast for T
where T: Any,

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fn into_any(self: Box<T>) -> Box<dyn Any>

Convert Box<dyn Trait> (where Trait: Downcast) to Box<dyn Any>. Box<dyn Any> can then be further downcast into Box<ConcreteType> where ConcreteType implements Trait.

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fn into_any_rc(self: Rc<T>) -> Rc<dyn Any>

Convert Rc<Trait> (where Trait: Downcast) to Rc<Any>. Rc<Any> can then be further downcast into Rc<ConcreteType> where ConcreteType implements Trait.

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fn as_any(&self) -> &(dyn Any + 'static)

Convert &Trait (where Trait: Downcast) to &Any. This is needed since Rust cannot generate &Any’s vtable from &Trait’s.

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fn as_any_mut(&mut self) -> &mut (dyn Any + 'static)

Convert &mut Trait (where Trait: Downcast) to &Any. This is needed since Rust cannot generate &mut Any’s vtable from &mut Trait’s.

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impl<T> DowncastSync for T
where T: Any + Send + Sync,

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fn into_any_arc(self: Arc<T>) -> Arc<dyn Any + Sync + Send>

Convert Arc<Trait> (where Trait: Downcast) to Arc<Any>. Arc<Any> can then be further downcast into Arc<ConcreteType> where ConcreteType implements Trait.

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impl<T> From<!> for T

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fn from(t: !) -> T

Converts to this type from the input type.

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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> Instrument for T

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fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided [Span], returning an Instrumented wrapper. Read more

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fn in_current_span(self) -> Instrumented<Self>

Instruments this type with the current Span, returning an Instrumented wrapper. Read more

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impl<T, U> Into 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<State, Message> IntoBoot<State, Message> for State

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fn into_boot(self) -> (State, Task<Message>)

Turns some type into the initial state of some Application.

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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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