umami/components/metrics/Legend.js
2022-01-06 01:45:53 -08:00

46 lines
1.2 KiB
JavaScript

import React from 'react';
import tinycolor from 'tinycolor2';
import classNames from 'classnames';
import Dot from 'components/common/Dot';
import useLocale from 'hooks/useLocale';
import useForceUpdate from 'hooks/useForceUpdate';
import styles from './Legend.module.css';
export default function Legend({ chart }) {
const { locale } = useLocale();
const forceUpdate = useForceUpdate();
function handleClick(index) {
const meta = chart.getDatasetMeta(index);
meta.hidden = meta.hidden === null ? !chart.data.datasets[index].hidden : null;
chart.update();
forceUpdate();
}
if (!chart?.legend?.legendItems.find(({ text }) => text)) {
return null;
}
return (
<div className={styles.legend}>
{chart.legend.legendItems.map(({ text, fillStyle, datasetIndex, hidden }) => {
const color = tinycolor(fillStyle);
return (
<div
key={text}
className={classNames(styles.label, { [styles.hidden]: hidden })}
onClick={() => handleClick(datasetIndex)}
>
<Dot color={color.setAlpha(color.getAlpha() + 0.2)} />
<span className={locale}>{text}</span>
</div>
);
})}
</div>
);
}