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52 lines
1.4 KiB
JavaScript
52 lines
1.4 KiB
JavaScript
// TODO: Rename this.
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import React from 'react';
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import classnames from 'classnames';
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// Taken from StackOverflow
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// http://stackoverflow.com/questions/15900485/correct-way-to-convert-size-in-bytes-to-kb-mb-gb-in-javascript
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function formatSize(bytes) {
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if (bytes === 0) return '0 Bytes';
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const k = 1000;
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const sizes = ['Bytes', 'KB', 'MB', 'GB', 'TB', 'PB', 'EB', 'ZB', 'YB'];
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let i = Math.floor(Math.log(bytes) / Math.log(k));
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return (bytes / Math.pow(k, i)).toPrecision(3) + ' ' + sizes[i];
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}
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export default class Arrow extends React.Component {
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render() {
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let classes = classnames('arrow', {
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'arrow-up': this.props.dir === 'up',
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'arrow-down': this.props.dir === 'down',
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'arrow-animated': this.props.animated
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});
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return <div className={classes}>
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<div className="arrow-border" />
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<div className="arrow-image">{this.props.dir === 'up' ? '^' : 'v'}</div>
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{this.props.name === null ? null
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: <div className="arrow-name">{this.props.name}</div>}
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{this.props.size === null ? null
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: <div className="arrow-size">{formatSize(this.props.size)}</div>}
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</div>;
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}
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}
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Arrow.propTypes = {
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dir: React.PropTypes.oneOf(['up', 'down']).isRequired,
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name: React.PropTypes.string,
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size: React.PropTypes.number,
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animated: React.PropTypes.bool
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};
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Arrow.defaultProps = {
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name: null,
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size: null,
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animated: false
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};
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