63 lines
No EOL
1.9 KiB
TypeScript
63 lines
No EOL
1.9 KiB
TypeScript
import React, { useEffect, useState } from 'react';
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import { FormattedNumber } from 'react-intl';
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import { TransitionMotion, spring } from 'react-motion';
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import { useSettings } from 'soapbox/hooks';
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const obfuscatedCount = (count: number) => {
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if (count < 0) {
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return 0;
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} else if (count <= 1) {
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return count;
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} else {
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return '1+';
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}
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};
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interface IAnimatedNumber {
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value: number
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obfuscate?: boolean
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}
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const AnimatedNumber: React.FC<IAnimatedNumber> = ({ value, obfuscate }) => {
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const reduceMotion = useSettings().get('reduceMotion');
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const [direction, setDirection] = useState(1);
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const [displayedValue, setDisplayedValue] = useState<number>(value);
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useEffect(() => {
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if (displayedValue !== undefined) {
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if (value > displayedValue) setDirection(1);
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else if (value < displayedValue) setDirection(-1);
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}
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setDisplayedValue(value);
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}, [value]);
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const willEnter = () => ({ y: -1 * direction });
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const willLeave = () => ({ y: spring(1 * direction, { damping: 35, stiffness: 400 }) });
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if (reduceMotion) {
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return obfuscate ? <>{obfuscatedCount(displayedValue)}</> : <FormattedNumber value={displayedValue} />;
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}
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const styles = [{
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key: `${displayedValue}`,
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data: displayedValue,
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style: { y: spring(0, { damping: 35, stiffness: 400 }) },
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}];
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return (
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<TransitionMotion styles={styles} willEnter={willEnter} willLeave={willLeave}>
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{items => (
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<span className='relative inline-flex flex-col items-stretch overflow-hidden'>
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{items.map(({ key, data, style }) => (
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<span key={key} style={{ position: (direction * style.y) > 0 ? 'absolute' : 'static', transform: `translateY(${style.y * 100}%)` }}>{obfuscate ? obfuscatedCount(data) : <FormattedNumber value={data} />}</span>
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))}
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</span>
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)}
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</TransitionMotion>
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);
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};
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export default AnimatedNumber; |