29 lines
937 B
TypeScript
29 lines
937 B
TypeScript
// Copyright (c) Microsoft Corporation.
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// Licensed under the MIT license.
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class Utils {
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parentElementOrShadowHost(element: Element): Element | undefined {
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if (element.parentElement)
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return element.parentElement;
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if (!element.parentNode)
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return;
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if (element.parentNode.nodeType === Node.DOCUMENT_FRAGMENT_NODE && (element.parentNode as ShadowRoot).host)
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return (element.parentNode as ShadowRoot).host;
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}
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deepElementFromPoint(document: Document, x: number, y: number): Element | undefined {
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let container: Document | ShadowRoot | null = document;
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let element: Element | undefined;
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while (container) {
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const innerElement = container.elementFromPoint(x, y) as Element | undefined;
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if (!innerElement || element === innerElement)
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break;
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element = innerElement;
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container = element.shadowRoot;
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}
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return element;
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}
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}
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export const utils = new Utils();
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