import { defaultDocument } from "../configurable-globals.js";
/**
 * Handles getting the active element in a document or shadow root.
 * If the active element is within a shadow root, it will traverse the shadow root
 * to find the active element.
 * If not, it will return the active element in the document.
 *
 * @param document A document or shadow root to get the active element from.
 * @returns The active element in the document or shadow root.
 */
export function getActiveElement(document) {
    let activeElement = document.activeElement;
    while (activeElement?.shadowRoot) {
        const node = activeElement.shadowRoot.activeElement;
        if (node === activeElement)
            break;
        else
            activeElement = node;
    }
    return activeElement;
}
/**
 * Returns the owner document of a given element.
 *
 * @param node The element to get the owner document from.
 * @returns
 */
export function getOwnerDocument(node, fallback = defaultDocument) {
    return node?.ownerDocument ?? fallback;
}
/**
 * Checks if an element is or is contained by another element.
 *
 * @param node The element to check if it or its descendants contain the target element.
 * @param target The element to check if it is contained by the node.
 * @returns
 */
export function isOrContainsTarget(node, target) {
    return node === target || node.contains(target);
}