91 lines
2.1 KiB
TypeScript
91 lines
2.1 KiB
TypeScript
// Copyright 2022 Signal Messenger, LLC
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// SPDX-License-Identifier: AGPL-3.0-only
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import classNames from 'classnames';
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import type { CSSProperties, ReactElement } from 'react';
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import React, { useEffect, useState } from 'react';
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import { animated, useSpring } from '@react-spring/web';
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import type { LocalizerType } from '../../types/Util';
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import { TimelineDateHeader } from './TimelineDateHeader';
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import { Spinner } from '../Spinner';
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export type PropsType = Readonly<{
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i18n: LocalizerType;
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isLoading: boolean;
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style?: CSSProperties;
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timestamp: number;
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visible: boolean;
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}>;
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export function TimelineFloatingHeader({
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i18n,
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isLoading,
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style,
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timestamp,
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visible,
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}: PropsType): ReactElement {
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const [hasRendered, setHasRendered] = useState(false);
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const [showSpinner, setShowSpinner] = useState(isLoading);
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useEffect(() => {
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setHasRendered(true);
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}, []);
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const [spinnerStyles, spinnerSpringRef] = useSpring(
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() => ({
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delay: 300,
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duration: 250,
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from: { opacity: 1 },
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to: { opacity: 0 },
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onRest: {
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opacity: ({ value }) => {
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if (value === 0) {
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setShowSpinner(false);
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}
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},
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},
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}),
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[isLoading]
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);
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useEffect(() => {
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if (isLoading) {
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spinnerSpringRef.stop();
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spinnerSpringRef.set({ opacity: 1 });
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setShowSpinner(true);
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}
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if (!isLoading && showSpinner) {
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spinnerSpringRef.start();
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}
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if (!isLoading && !showSpinner) {
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spinnerSpringRef.stop();
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}
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}, [isLoading, showSpinner, spinnerSpringRef]);
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return (
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<div
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aria-level={5}
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className={classNames(
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'TimelineFloatingHeader',
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`TimelineFloatingHeader--${
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visible && hasRendered ? 'visible' : 'hidden'
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}`
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)}
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role="heading"
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style={style}
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>
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<TimelineDateHeader floating i18n={i18n} timestamp={timestamp} />
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{showSpinner && (
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<animated.div
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className="TimelineFloatingHeader__spinner-container"
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style={spinnerStyles}
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>
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<Spinner direction="on-background" size="20px" svgSize="small" />
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</animated.div>
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)}
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</div>
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);
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}
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