@gravity-ui/uikit/build/esm/components/Drawer/hooks/useInitialFocus.js

Gravity UI base styling and components

import * as React from 'react';
import { tabbable } from 'tabbable';
export function useInitialFocus({ open, initialFocus, floatingRef }) {
    React.useEffect(() => {
        if (!open || initialFocus === undefined)
            return;
        const timerId = setTimeout(() => {
            const floatingEl = floatingRef.current;
            if (!floatingEl)
                return;
            let elToFocus = null;
            if (typeof initialFocus === 'number') {
                const tabbableEls = tabbable(floatingEl);
                elToFocus = tabbableEls[initialFocus] ?? null;
            }
            else {
                elToFocus = initialFocus.current;
            }
            elToFocus?.focus({ preventScroll: true });
        }, 0);
        return () => clearTimeout(timerId);
    }, [open, initialFocus, floatingRef]);
}
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