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outline/app/scenes/Document/components/LoadingPlaceholder/LoadingPlaceholder.js

43 lines
1.2 KiB
JavaScript

// @flow
import React from 'react';
import ReactCSSTransitionGroup from 'react-addons-css-transition-group';
import styled from 'styled-components';
import { pulsate } from 'shared/styles/animations';
import { color } from 'shared/styles/constants';
import Flex from 'components/Flex';
import { randomInteger } from 'utils/random';
const randomValues = Array.from(
new Array(5),
() => `${randomInteger(85, 100)}%`
);
export default (props: Object) => {
return (
<ReactCSSTransitionGroup
transitionName="fadeIn"
transitionAppear
transitionEnter
transitionLeave
transitionAppearTimeout={0}
transitionEnterTimeout={0}
transitionLeaveTimeout={0}
>
<Flex column auto {...props}>
<Mask style={{ width: randomValues[0] }} header />
<Mask style={{ width: randomValues[1] }} />
<Mask style={{ width: randomValues[2] }} />
<Mask style={{ width: randomValues[3] }} />
</Flex>
</ReactCSSTransitionGroup>
);
};
const Mask = styled(Flex)`
height: ${props => (props.header ? 28 : 18)}px;
margin-bottom: ${props => (props.header ? 32 : 14)}px;
background-color: ${color.smoke};
animation: ${pulsate} 1.3s infinite;
`;