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https://github.com/balena-io/etcher.git
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b76366a514
Change-type: patch Signed-off-by: Lorenzo Alberto Maria Ambrosi <lorenzothunder.ambrosi@gmail.com>
75 lines
2.1 KiB
TypeScript
75 lines
2.1 KiB
TypeScript
/*
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* Copyright 2018 balena.io
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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import * as React from 'react';
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const domParser = new window.DOMParser();
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const DEFAULT_SIZE = '40px';
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/**
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* @summary Try to parse SVG contents and return it data encoded
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*
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*/
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function tryParseSVGContents(contents?: string): string | undefined {
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if (contents === undefined) {
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return;
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}
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const doc = domParser.parseFromString(contents, 'image/svg+xml');
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const parserError = doc.querySelector('parsererror');
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const svg = doc.querySelector('svg');
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if (!parserError && svg) {
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return `data:image/svg+xml,${encodeURIComponent(svg.outerHTML)}`;
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}
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}
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interface SVGIconProps {
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// Optional string representing the SVG contents to be tried
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contents?: string;
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// Fallback SVG element to show if `contents` is invalid/undefined
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fallback: React.FunctionComponent<React.SVGProps<HTMLOrSVGElement>>;
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// SVG image width unit
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width?: string;
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// SVG image height unit
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height?: string;
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// Should the element visually appear grayed out and disabled?
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disabled?: boolean;
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style?: React.CSSProperties;
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}
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/**
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* @summary SVG element that takes file contents
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*/
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export class SVGIcon extends React.PureComponent<SVGIconProps> {
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public render() {
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const svgData = tryParseSVGContents(this.props.contents);
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const { width, height, style = {} } = this.props;
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style.width = width || DEFAULT_SIZE;
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style.height = height || DEFAULT_SIZE;
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if (svgData !== undefined) {
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return (
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<img
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className={this.props.disabled ? 'disabled' : ''}
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style={style}
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src={svgData}
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/>
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);
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}
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const { fallback: FallbackSVG } = this.props;
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return <FallbackSVG style={style} />;
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}
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}
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