Struct Style

pub struct Style(pub Option<InnerStyle>);

Tuple Fields

0: Option<InnerStyle>

Implementations

impl Style

pub fn new() -> Self

pub fn with_defaults<I: Into<Self>>(self, defaults: I) -> Self

Methods from Deref<Target = Option<InnerStyle>>

pub fn is_some(&self) -> bool

Returns true if the option is a Some value.

Examples

let x: Option<u32> = Some(2);
assert_eq!(x.is_some(), true);

let x: Option<u32> = None;
assert_eq!(x.is_some(), false);

pub fn is_none(&self) -> bool

Returns true if the option is a None value.

Examples

let x: Option<u32> = Some(2);
assert_eq!(x.is_none(), false);

let x: Option<u32> = None;
assert_eq!(x.is_none(), true);

pub fn as_ref(&self) -> Option<&T>

Converts from &Option<T> to Option<&T>.

Examples

Calculates the length of an Option<String> as an Option<usize> without moving the String. The map method takes the self argument by value, consuming the original, so this technique uses as_ref to first take an Option to a reference to the value inside the original.

let text: Option<String> = Some("Hello, world!".to_string());
// First, cast `Option<String>` to `Option<&String>` with `as_ref`,
// then consume *that* with `map`, leaving `text` on the stack.
let text_length: Option<usize> = text.as_ref().map(|s| s.len());
println!("still can print text: {text:?}");

pub fn as_pin_ref(self: Pin<&Option<T>>) -> Option<Pin<&T>>

Converts from Pin<&Option<T>> to Option<Pin<&T>>.

pub fn as_pin_mut(self: Pin<&mut Option<T>>) -> Option<Pin<&mut T>>

Converts from Pin<&mut Option<T>> to Option<Pin<&mut T>>.

pub fn as_slice(&self) -> &[T]

Returns a slice of the contained value, if any. If this is None, an empty slice is returned. This can be useful to have a single type of iterator over an Option or slice.

Note: Should you have an Option<&T> and wish to get a slice of T, you can unpack it via opt.map_or(&[], std::slice::from_ref).

Examples

assert_eq!(
    [Some(1234).as_slice(), None.as_slice()],
    [&[1234][..], &[][..]],
);

The inverse of this function is (discounting borrowing) [_]::first:

for i in [Some(1234_u16), None] {
    assert_eq!(i.as_ref(), i.as_slice().first());
}

pub fn as_deref(&self) -> Option<&<T as Deref>::Target>

where T: Deref,

Converts from Option<T> (or &Option<T>) to Option<&T::Target>.

Leaves the original Option in-place, creating a new one with a reference to the original one, additionally coercing the contents via Deref.

Examples

let x: Option<String> = Some("hey".to_owned());
assert_eq!(x.as_deref(), Some("hey"));

let x: Option<String> = None;
assert_eq!(x.as_deref(), None);

pub fn iter(&self) -> Iter<'_, T>

Returns an iterator over the possibly contained value.

Examples

let x = Some(4);
assert_eq!(x.iter().next(), Some(&4));

let x: Option<u32> = None;
assert_eq!(x.iter().next(), None);

Trait Implementations

impl Clone for Style

fn clone(&self) -> Style

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Style

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

Formats the value using the given formatter.

impl Default for Style

fn default() -> Style

Returns the “default value” for a type.

impl Deref for Style

type Target = Option<InnerStyle>

The resulting type after dereferencing.

fn deref(&self) -> &Self::Target

Dereferences the value.

impl Display for Style

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

Formats the value using the given formatter.

impl From<&str> for Style

fn from(value: &str) -> Style

Converts to this type from the input type.

impl<const N: usize> From<[(&str, &str); N]> for Style

fn from(value: [(&str, &str); N]) -> Style

Converts to this type from the input type.

impl<const N: usize> From<[(&str, Option<&str>); N]> for Style

fn from(value: [(&str, Option<&str>); N]) -> Style

Converts to this type from the input type.

impl<const N: usize> From<[(&str, Option<String>); N]> for Style

fn from(value: [(&str, Option<String>); N]) -> Style

Converts to this type from the input type.

impl<const N: usize> From<[(&str, String); N]> for Style

fn from(value: [(&str, String); N]) -> Style

Converts to this type from the input type.

impl<const N: usize> From<[(String, Option<String>); N]> for Style

fn from(value: [(String, Option<String>); N]) -> Style

Converts to this type from the input type.

impl<const N: usize> From<[(String, String); N]> for Style

fn from(value: [(String, String); N]) -> Style

Converts to this type from the input type.

impl From<IndexMap<String, Option<String>>> for Style

fn from(value: IndexMap<String, Option<String>>) -> Style

Converts to this type from the input type.

impl From<IndexMap<String, String>> for Style

fn from(value: IndexMap<String, String>) -> Style

Converts to this type from the input type.

impl From<Option<&str>> for Style

fn from(value: Option<&str>) -> Style

Converts to this type from the input type.

impl From<Option<String>> for Style

fn from(value: Option<String>) -> Style

Converts to this type from the input type.

impl From<String> for Style

fn from(value: String) -> Style

Converts to this type from the input type.

impl IntoStyle for Style

type AsyncOutput = Style

The type after all async data have resolved.

type State = (Element, Style)

The view state retained between building and rebuilding.

type Cloneable = Style

An equivalent value that can be cloned.

type CloneableOwned = Style

An equivalent value that can be cloned and is 'static.

fn to_html(self, style: &mut String)

Renders the style to HTML.

fn hydrate<const FROM_SERVER: bool>(self, el: &Element) -> Self::State

Adds interactivity as necessary, given DOM nodes that were created from HTML that has either been rendered on the server, or cloned for a <template>.

fn build(self, el: &Element) -> Self::State

Adds this style to the element during client-side rendering.

fn rebuild(self, state: &mut Self::State)

Updates the value.

fn into_cloneable(self) -> Self::Cloneable

Converts this to a cloneable type.

fn into_cloneable_owned(self) -> Self::CloneableOwned

Converts this to a cloneable, owned type.

fn dry_resolve(&mut self)

“Runs” the attribute without other side effects. For primitive types, this is a no-op. For reactive types, this can be used to gather data about reactivity or about asynchronous data that needs to be loaded.

async fn resolve(self) -> Self::AsyncOutput

“Resolves” this into a type that is not waiting for any asynchronous data.

fn reset(state: &mut Self::State)

Reset the styling to the state before this style was added.

impl PartialEq for Style

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

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

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

impl StructuralPartialEq for Style