chart_js_rs/
traits.rs

1use crate::objects::*;
2use serde::Serialize;
3use serde_json::Value;
4use std::{collections::*, fmt::Display};
5
6pub(crate) trait ChartJsRsObject {
7    fn is_empty(&self) -> bool;
8}
9impl<T: Display> ChartJsRsObject for T {
10    fn is_empty(&self) -> bool {
11        self.to_string().is_empty()
12    }
13}
14
15pub trait DatasetTrait: Serialize + Default + Clone {
16    fn labels(self) -> Vec<NumberOrDateString>;
17}
18pub trait DatasetDataExt {
19    fn presorted_to_dataset_data(self) -> DatasetData;
20    fn unsorted_to_dataset_data(self) -> DatasetData;
21}
22
23impl<I> DatasetDataExt for I
24where
25    I: Iterator<Item = (NumberOrDateString, NumberString, Option<Value>)>,
26{
27    fn presorted_to_dataset_data(self) -> DatasetData {
28        DatasetData(serde_json::to_value(self.map(XYPoint::from).collect::<Vec<_>>()).unwrap())
29    }
30    fn unsorted_to_dataset_data(self) -> DatasetData {
31        DatasetData(serde_json::to_value(self.map(XYPoint::from).collect::<BTreeSet<_>>()).unwrap())
32    }
33}
34
35pub trait DatasetIterExt: Iterator {
36    fn into_data_iter<X, Y>(
37        self,
38    ) -> impl Iterator<Item = (NumberOrDateString, NumberString, Option<Value>)>
39    where
40        Self: Iterator<Item = (X, Y)> + Sized,
41        X: Into<NumberOrDateString>,
42        Y: Into<NumberString>,
43    {
44        self.map(|(x, y)| (x.into(), y.into(), None))
45    }
46    fn into_data_iter_with_description<X, Y, D>(
47        self,
48    ) -> impl Iterator<Item = (NumberOrDateString, NumberString, Option<Value>)>
49    where
50        Self: Iterator<Item = (X, Y, D)> + Sized,
51        X: Into<NumberOrDateString>,
52        Y: Into<NumberString>,
53        D: Serialize,
54    {
55        self.map(|(x, y, d)| (x.into(), y.into(), Some(serde_json::to_value(d).unwrap())))
56    }
57}
58impl<T> DatasetIterExt for T where T: Iterator + ?Sized {}
chart_js_rs/traits.rs

chart_js_rs/
traits.rs
