Struct Coordinate

#[non_exhaustive]
pub struct Coordinate<T, U> {
    pub x: T,
    pub y: U,
}

A representation in rust of a ChartJS coordinate, allowing convenient formatting when constructing tooltips

Fields (Non-exhaustive)

Non-exhaustive structs could have additional fields added in future. Therefore, non-exhaustive structs cannot be constructed in external crates using the traditional Struct { .. } syntax; cannot be matched against without a wildcard ..; and struct update syntax will not work.

x: T

y: U

Implementations

impl<T, TE, U, UE> Coordinate<T, U>

where T: FromStr<Err = TE>, U: FromStr<Err = UE>, TE: Error + Sync + Send + 'static, UE: Error + Sync + Send + 'static,

pub fn from_js_value(val: JsValue) -> Result<Self, CoordinateError>

This should be used inside a #[wasm_bindgen] function where it is known that the parameter passed to the function will have the shape of an individual coordinate

1. first create a function

#[wasm_bindgen]
pub fn chart_data_label_formatter(a: JsValue, _: JsValue) -> JsValue {
    match Coordinate::<NaiveDate, Dollars>::from_js_value(a) {
        Ok(val) => JsValue::from_str(&val.y.format().to_string()),
        Err(e) => {
            console_dbg!("Error converting to serde", e);
            JsValue::from_str("")
        }
    }
}

2. then use it with the crate::objects::DataLabels builder:

DataLabels::new()
.formatter(FnWithArgs::<2>::new().run_rust_fn(chart_data_label_formatter)),

Trait Implementations

impl<T: Debug, U: Debug> Debug for Coordinate<T, U>

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

Formats the value using the given formatter.