| 1 | // Copyright (c) Jupyter Development Team.
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| 2 | // Distributed under the terms of the Modified BSD License.
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| 3 | import { Text } from '@jupyterlab/coreutils';
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| 4 | /**
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| 5 | * Inner works of class combining functions
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| 6 | */
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| 7 | function _classes(classes) {
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| 8 | return classes
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| 9 | .map(c => c && typeof c === 'object'
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| 10 | ? Object.keys(c).map(key => !!c[key] && key)
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| 11 | : typeof c === 'string'
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| 12 | ? c.split(/\s+/)
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| 13 | : [])
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| 14 | .reduce((flattened, c) => flattened.concat(c), [])
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| 15 | .filter(c => !!c);
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| 16 | }
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| 17 | /**
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| 18 | * Combines classNames.
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| 19 | *
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| 20 | * @param classes - A list of classNames
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| 21 | *
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| 22 | * @returns A single string with the combined className
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| 23 | */
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| 24 | export function classes(...classes) {
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| 25 | return _classes(classes).join(' ');
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| 26 | }
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| 27 | /**
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| 28 | * Combines classNames. Removes all duplicates
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| 29 | *
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| 30 | * @param classes - A list of classNames
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| 31 | *
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| 32 | * @returns A single string with the combined className
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| 33 | */
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| 34 | export function classesDedupe(...classes) {
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| 35 | return [...new Set(_classes(classes))].join(' ');
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| 36 | }
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| 37 | /**
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| 38 | * Translates the attributes of a DOM element into attributes that can
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| 39 | * be understood by React. Currently not comprehensive, we will add special
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| 40 | * cases as they become relevant.
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| 41 | *
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| 42 | * @param elem - A DOM element
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| 43 | *
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| 44 | * @param ignore - An optional list of attribute names to ignore
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| 45 | *
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| 46 | * @returns An object with key:value pairs that are the React-friendly
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| 47 | * translation of elem's attributes
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| 48 | */
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| 49 | export function getReactAttrs(elem, { ignore = [] } = {}) {
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| 50 | return elem.getAttributeNames().reduce((d, name) => {
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| 51 | if (name === 'style' || ignore.includes(name)) {
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| 52 | void 0;
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| 53 | }
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| 54 | else if (name.startsWith('data')) {
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| 55 | d[name] = elem.getAttribute(name);
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| 56 | }
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| 57 | else {
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| 58 | d[Text.camelCase(name)] = elem.getAttribute(name);
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| 59 | }
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| 60 | return d;
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| 61 | }, {});
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| 62 | }
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| 63 | //# sourceMappingURL=utils.js.map |
| \ | No newline at end of file |