22 lines
531 B
TypeScript
22 lines
531 B
TypeScript
// Copyright 2021 Signal Messenger, LLC
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// SPDX-License-Identifier: AGPL-3.0-only
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export function isWindowDragElement(el: Readonly<Element>): boolean {
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let currentEl: Element | null = el;
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do {
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const appRegion = getComputedStyle(currentEl).getPropertyValue(
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'-webkit-app-region'
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);
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switch (appRegion) {
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case 'no-drag':
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return false;
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case 'drag':
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return true;
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default:
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currentEl = currentEl.parentElement;
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break;
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}
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} while (currentEl);
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return false;
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}
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