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UseHover

Struct UseHover 

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pub struct UseHover {
    pub target: NodeRef<Element>,
    pub hovered: Signal<bool>,
    /* private fields */
}
Expand description

Reactive state for a hover watcher.

The handle carries the element the hook watches — a NodeRef the caller attaches to its own markup — and the signal that reports whether the pointer is currently over it.

The watcher listens on the document rather than on the element itself, for the same reason the click-outside watcher does: the element does not exist while the first render is being built, and a document listener can then ask whether the pointer’s node sits inside the watched element.

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§target: NodeRef<Element>

The element the hook watches.

Attach it to the caller’s markup with the ref: attribute.

§hovered: Signal<bool>

Whether the pointer is currently over the watched element.

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impl UseHover

Inherent implementation of UseHover.

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pub fn is_hovered(&self) -> bool

Returns the current hover state as a snapshot.

§Returns
  • bool - true when the pointer is over the watched element.
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impl UseHover

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pub fn get_target(&self) -> &NodeRef<Element>

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pub fn get_mut_target(&mut self) -> &mut NodeRef<Element>

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pub fn set_target(&mut self, val: NodeRef<Element>) -> &mut Self

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pub fn get_hovered(&self) -> Signal<bool>

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pub fn get_mut_hovered(&mut self) -> &mut Signal<bool>

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pub fn set_hovered(&mut self, val: Signal<bool>) -> &mut Self

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pub fn get_mut_teardown(&mut self) -> &mut Rc<RefCell<Option<Box<dyn Fn()>>>>

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pub fn set_teardown( &mut self, val: Rc<RefCell<Option<Box<dyn Fn()>>>>, ) -> &mut Self

Trait Implementations§

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impl Clone for UseHover

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fn clone(&self) -> Self

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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impl Debug for UseHover

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

Formats the struct fields as a debug struct, skipping excluded fields.

§Arguments
  • &mut std::fmt::Formatter<'_> - The formatter to write the representation into.
§Returns
  • std::fmt::Result - Success or failure of the formatting operation.

Auto Trait 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<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> 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> 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