humus-old/client/ui/world-time.js

41 lines
903 B
JavaScript
Raw Normal View History

2019-04-12 11:04:59 -05:00
// 3rd party.
import React, {useEffect, useState} from 'react';
// 2nd party.
import {compose} from '@avocado/core';
import contempo from 'contempo';
// 1st party.
import {WorldTime} from '../../common/world-time';
const decorate = compose(
contempo(`
.time {
background-color: rgba(0, 0, 0, .3);
border: 0.5px solid gray;
border-radius: 50px;
color: white;
position: absolute;
top: 5px;
right: 5px;
line-height: 1em;
padding: 0.5em;
font-family: monospace;
}
`),
);
const WorldTimeComponent = ({ticker}) => {
const [time, setTime] = useState('--:-- --');
useEffect(() => {
const updater = (hour) => {
setTime(WorldTime.format(hour));
};
ticker.on('updateTime', updater);
return () => {
ticker.off('updateTime', updater);
};
}, []);
return <div className="time unselectable">{time}</div>;
}
export default decorate(WorldTimeComponent);