Struct Attributes 

pub struct Attributes { /* private fields */ }

Untyped attribute bag handed to Widget::spawn: every attribute the element was written with in markup.

A flat (name, value) map keyed by attribute name, the values as authored. The parser owns the concrete representation; this crate keeps an enum-free wrapper so authors don’t pull a parser dep just to write a widget.

Implementations

impl Attributes

pub fn new() -> Self

Build an empty attribute bag.

pub fn set( &mut self, key: impl Into<String>, value: impl Into<String>, ) -> &mut Self

Insert a single attribute. Last write wins.

pub fn get(&self, key: &str) -> Option<&str>

Look up an attribute by name.

pub fn get_or<'a>(&'a self, key: &str, default: &'a str) -> &'a str

Look up an attribute, falling back to the supplied default.

pub fn parse<T: FromStr>(&self, key: &str) -> Option<T>

Parse an attribute into T via std::str::FromStr. Returns None when the attribute is absent or fails to parse.

pub fn len(&self) -> usize

Number of attributes set.

pub fn is_empty(&self) -> bool

true when no attributes are set.

pub fn iter(&self) -> impl Iterator<Item = (&str, &str)>

Iterate over (name, value) pairs.

Trait Implementations

impl Clone for Attributes

fn clone(&self) -> Attributes

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Attributes

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

Formats the value using the given formatter.

impl Default for Attributes

fn default() -> Attributes

Returns the “default value” for a type.

impl<K, V, const N: usize> From<[(K, V); N]> for Attributes

where K: Into<String>, V: Into<String>,

fn from(pairs: [(K, V); N]) -> Self

Converts to this type from the input type.

impl<K, V> From<Vec<(K, V)>> for Attributes

where K: Into<String>, V: Into<String>,

fn from(pairs: Vec<(K, V)>) -> Self

Converts to this type from the input type.