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| import React from 'react';
import PropTypes from 'prop-types';
import moment from 'moment';
import { objectKeyFilter } from './objects';
const dateTypes = [
PropTypes.string,
PropTypes.number,
PropTypes.array,
PropTypes.object
];
const parseTypes = [
PropTypes.string,
PropTypes.array
];
const calendarTypes = [
PropTypes.object,
PropTypes.bool
]
export default class Moment extends React.Component {
static propTypes = {
element: PropTypes.any,
date: PropTypes.oneOfType(dateTypes),
parse: PropTypes.oneOfType(parseTypes),
format: PropTypes.string,
add: PropTypes.object,
subtract: PropTypes.object,
ago: PropTypes.bool,
fromNow: PropTypes.bool,
from: PropTypes.oneOfType(dateTypes),
toNow: PropTypes.bool,
to: PropTypes.oneOfType(dateTypes),
calendar: PropTypes.oneOfType(calendarTypes),
unix: PropTypes.bool,
utc: PropTypes.bool,
tz: PropTypes.string,
locale: PropTypes.string,
interval: PropTypes.number,
diff: PropTypes.oneOfType(dateTypes),
unit: PropTypes.string,
decimal: PropTypes.bool,
filter: PropTypes.func,
onChange: PropTypes.func
};
static defaultProps = {
element: 'time',
fromNow: false,
toNow: false,
calendar: false,
ago: false,
unix: false,
utc: false,
unit: null,
decimal: false,
interval: 60000,
filter: (d) => { return d; },
onChange: () => {}
};
static globalMoment = null;
static globalLocale = null;
static globalFormat = null;
static globalParse = null;
static globalFilter = null;
static globalElement = null;
static pooledElements = [];
static pooledTimer = null;
/**
* Starts the pooled timer
*
* @param {number} interval
*/
static startPooledTimer(interval = 60000) {
Moment.clearPooledTimer();
Moment.pooledTimer = setInterval(() => {
Moment.pooledElements.forEach((element) => {
if (element.props.interval !== 0) {
element.update();
}
});
}, interval);
}
/**
* Stops the pooled timer
*/
static clearPooledTimer() {
Iif (Moment.pooledTimer) {
clearInterval(Moment.pooledTimer);
Moment.pooledTimer = null;
Moment.pooledElements = [];
}
}
/**
* Adds a Moment instance to the pooled elements list
*
* @param {Moment|React.Component} element
*/
static pushPooledElement(element) {
Iif (!(element instanceof Moment)) {
console.error('Element not an instance of Moment.');
return;
}
Eif (Moment.pooledElements.indexOf(element) === -1) {
Moment.pooledElements.push(element);
}
}
/**
* Removes a Moment instance from the pooled elements list
*
* @param {Moment|React.Component} element
*/
static removePooledElement(element) {
const index = Moment.pooledElements.indexOf(element);
if (index !== -1) {
Moment.pooledElements.splice(index, 1);
}
}
/**
* Returns a Date based on the set props
*
* @param {*} props
* @returns {*}
*/
static getDatetime(props) {
const { utc, unix, tz } = props;
let { date, locale, parse } = props;
date = date || props.children;
parse = parse || Moment.globalParse;
if (Moment.globalLocale) {
locale = Moment.globalLocale;
} else {
locale = locale || Moment.globalMoment.locale();
}
let datetime = null;
if (utc) {
datetime = Moment.globalMoment.utc(date, parse, locale);
} else if (unix) {
// moment#unix fails because of a deprecation,
// but since moment#unix(s) is implemented as moment(s * 1000),
// this works equivalently
datetime = Moment.globalMoment(date * 1000, parse, locale);
} else {
datetime = Moment.globalMoment(date, parse, locale);
}
if (tz) {
datetime = datetime.tz(tz);
}
return datetime;
}
/**
* Constructor
*
* @param {*} props
*/
constructor(props) {
super(props);
if (!Moment.globalMoment) {
Moment.globalMoment = moment;
}
this.state = {
content: ''
};
this.timer = null;
}
/**
* Invoked immediately before mounting occurs
*/
componentWillMount() {
this.update(this.props);
}
/**
* Invoked immediately after a component is mounted
*/
componentDidMount() {
this.setTimer();
if (Moment.pooledTimer) {
Moment.pushPooledElement(this);
}
}
/**
* Invoked before a mounted component receives new props
*
* @param {*} nextProps
*/
componentWillReceiveProps(nextProps) {
this.update(nextProps);
}
/**
* Invoked immediately after updating occurs
*
* @param {*} prevProps
*/
componentDidUpdate(prevProps) {
Iif (prevProps.interval !== this.props.interval) {
this.setTimer();
}
}
/**
* Invoked immediately before a component is unmounted and destroyed
*/
componentWillUnmount() {
this.clearTimer();
}
/**
* Starts the interval timer.
*/
setTimer = () => {
this.clearTimer();
const interval = this.props.interval;
if (!Moment.pooledTimer && interval !== 0) {
this.timer = setInterval(() => {
this.update(this.props);
}, interval);
}
};
/**
* Clears the interval timer.
*/
clearTimer = () => {
Iif (!Moment.pooledTimer && this.timer) {
clearInterval(this.timer);
this.timer = null;
}
if (Moment.pooledTimer && !this.timer) {
Moment.removePooledElement(this);
}
};
/**
* Updates this.state.content
*/
update(props) {
props = props || this.props;
const {
fromNow, from, add, subtract, toNow, to, ago,
calendar, diff, unit, decimal
} = props;
let { format } = props;
format = format || Moment.globalFormat;
const datetime = Moment.getDatetime(props);
if (add) {
datetime.add(add);
}
if (subtract) {
datetime.subtract(subtract);
}
let content = '';
if (format) {
content = datetime.format(format);
} else if (from) {
content = datetime.from(from, ago);
} else if (fromNow) {
content = datetime.fromNow(ago);
} else if (to) {
content = datetime.to(to, ago);
} else if (toNow) {
content = datetime.toNow(ago);
} else if (calendar) {
content = datetime.calendar(null, calendar);
} else if (diff) {
content = datetime.diff(diff, unit, decimal);
} else {
content = datetime.toString();
}
const filter = Moment.globalFilter || this.props.filter;
content = filter(content);
this.setState({ content }, () => {
this.props.onChange(content);
});
}
render() {
const props = objectKeyFilter(this.props, Moment.propTypes);
return React.createElement(Moment.globalElement || this.props.element, {
dateTime: Moment.getDatetime(this.props),
...props
},
this.state.content
);
}
}
|