19 lines
566 B
JavaScript
19 lines
566 B
JavaScript
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import Helper from '@ember/component/helper';
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import { assert } from '@ember/debug';
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import { adoptStyles } from '@lit/reactive-element';
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export default class AdoptStylesHelper extends Helper {
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/**
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* Adopt/apply given styles to a `ShadowRoot` using constructable styleSheets if supported
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*
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* @param {[ShadowRoot, CSSResultGroup]} params
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*/
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compute([$shadow, styles], hash) {
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assert(
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'adopt-styles can only be used to apply styles to ShadowDOM elements',
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$shadow instanceof ShadowRoot
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);
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adoptStyles($shadow, [styles]);
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}
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}
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