107 lines
3.2 KiB
TypeScript
107 lines
3.2 KiB
TypeScript
/*
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* Copyright (C) 2026 Fluxer Contributors
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*
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* This file is part of Fluxer.
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*
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* Fluxer is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* Fluxer is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with Fluxer. If not, see <https://www.gnu.org/licenses/>.
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*/
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import {observer} from 'mobx-react-lite';
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import {forwardRef, useMemo} from 'react';
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import styles from './ScrollFillerSkeleton.module.css';
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interface Props {
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messages: Array<number>;
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attachmentSpecs: Array<[number, {width: number; height: number}] | undefined>;
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groupSpacing: number;
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totalHeight: number;
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}
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const ScrollFillerSkeleton = observer(
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forwardRef<HTMLDivElement, Props>(function ScrollFillerSkeleton(
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{messages, attachmentSpecs, groupSpacing, totalHeight},
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ref,
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) {
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const seededRandom = useMemo(
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() => (seed: number) => {
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const x = Math.sin(seed) * 10000;
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return x - Math.floor(x);
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},
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[],
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);
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return (
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<div className={styles.wrapper} ref={ref} style={{minHeight: totalHeight}} aria-hidden="true">
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{messages.map((messageCount, groupIndex) => {
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const attachmentSpec = attachmentSpecs[groupIndex];
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const baseSeed = (groupIndex + 1) * 17;
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const usernameWidth = 48 + seededRandom(baseSeed) * 36;
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const timestampWidth = 8 + seededRandom(baseSeed + 3) * 12;
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return (
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<div
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key={groupIndex}
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className={styles.messageGroup}
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style={{
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marginBottom: groupIndex === messages.length - 1 ? 0 : `${groupSpacing}px`,
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}}
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>
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<div className={styles.group}>
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<div className={styles.avatar} />
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<div className={styles.body}>
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<div className={styles.header}>
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<div className={styles.username} style={{width: `${Math.min(usernameWidth, 92)}%`}} />
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<div className={styles.timestamp} style={{width: `${Math.min(timestampWidth, 24)}%`}} />
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</div>
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<div className={styles.messages}>
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{Array.from({length: messageCount}).map((_, lineIndex) => {
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const lineSeed = baseSeed + lineIndex * 11;
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const baseWidth = 75;
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const variance = 18;
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const width = baseWidth + seededRandom(lineSeed) * variance;
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return (
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<div
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key={lineIndex}
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className={styles.messageLine}
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style={{
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width: `${Math.min(98, width)}%`,
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height: 12,
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}}
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/>
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);
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})}
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</div>
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{attachmentSpec && (
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<div
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className={styles.attachment}
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style={{
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width: Math.min(attachmentSpec[1].width, 420),
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height: Math.min(attachmentSpec[1].height, 250),
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}}
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/>
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)}
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</div>
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</div>
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</div>
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);
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})}
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</div>
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);
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}),
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);
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export default ScrollFillerSkeleton;
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