50 lines
1.1 KiB
JavaScript
50 lines
1.1 KiB
JavaScript
// @flow
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import * as React from "react";
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import styled from "styled-components";
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import { randomInteger } from "shared/random";
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import Flex from "components/Flex";
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import { pulsate } from "styles/animations";
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type Props = {|
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header?: boolean,
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height?: number,
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minWidth?: number,
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maxWidth?: number,
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delay?: number,
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|};
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class PlaceholderText extends React.Component<Props> {
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width = randomInteger(this.props.minWidth || 75, this.props.maxWidth || 100);
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shouldComponentUpdate() {
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return false;
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}
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render() {
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return (
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<Mask
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width={this.width}
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height={this.props.height}
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delay={this.props.delay}
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/>
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);
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}
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}
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const Mask = styled(Flex)`
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width: ${(props) => (props.header ? props.width / 2 : props.width)}%;
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height: ${(props) =>
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props.height ? props.height : props.header ? 24 : 18}px;
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margin-bottom: 6px;
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border-radius: 6px;
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background-color: ${(props) => props.theme.divider};
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animation: ${pulsate} 2s infinite;
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animation-delay: ${(props) => props.delay || 0}s;
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&:last-child {
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margin-bottom: 0;
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}
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`;
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export default PlaceholderText;
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