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Struct yew::html::NodeRef

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pub struct NodeRef(/* private fields */);
Expand description

Wrapped Node reference for later use in Component lifecycle methods.

§Example

Focus an <input> element on mount.

use web_sys::HtmlInputElement;

pub struct Input {
    node_ref: NodeRef,
}

impl Component for Input {
    type Message = ();
    type Properties = ();

    fn create(_ctx: &Context<Self>) -> Self {
        Input {
            node_ref: NodeRef::default(),
        }
    }

    fn rendered(&mut self, _ctx: &Context<Self>, first_render: bool) {
        if first_render {
            if let Some(input) = self.node_ref.cast::<HtmlInputElement>() {
                input.focus();
            }
        }
    }

    fn view(&self, _ctx: &Context<Self>) -> Html {
        html! {
            <input ref={self.node_ref.clone()} type="text" />
        }
    }
}

§Relevant examples

Implementations§

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impl NodeRef

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pub fn get(&self) -> Option<Node>

Get the wrapped Node reference if it exists

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pub fn cast<INTO: AsRef<Node> + From<JsValue>>(&self) -> Option<INTO>

Try converting the node reference into another form

Trait Implementations§

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impl Clone for NodeRef

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fn clone(&self) -> NodeRef

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for NodeRef

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

Formats the value using the given formatter. Read more
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impl Default for NodeRef

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fn default() -> NodeRef

Returns the “default value” for a type. Read more
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impl ImplicitClone for NodeRef

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fn implicit_clone(&self) -> Self

This function is not magic; it is literally defined as Read more
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impl PartialEq for NodeRef

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fn eq(&self, other: &Self) -> bool

This method tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

Auto Trait Implementations§

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impl Freeze for NodeRef

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impl !RefUnwindSafe for NodeRef

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impl !Send for NodeRef

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impl !Sync for NodeRef

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impl Unpin for NodeRef

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impl !UnwindSafe for NodeRef

Blanket 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> 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<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> IntoPropValue<Option<T>> for T

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fn into_prop_value(self) -> Option<T>

Convert self to a value of a Properties struct.
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impl<T> IntoPropValue<T> for T

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fn into_prop_value(self) -> T

Convert self to a value of a Properties struct.
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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 = 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.
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impl<T> WithSubscriber for T

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fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>
where S: Into<Dispatch>,

Attaches the provided Subscriber to this type, returning a [WithDispatch] wrapper. Read more
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fn with_current_subscriber(self) -> WithDispatch<Self>

Attaches the current default Subscriber to this type, returning a [WithDispatch] wrapper. Read more