react-bootstrap-typeahead/types/behaviors/item.js

import PropTypes from 'prop-types';
import React, { useCallback, useEffect, useRef, } from 'react';
import scrollIntoView from 'scroll-into-view-if-needed';
import { useTypeaheadContext } from '../core/Context';
import { getDisplayName, getMenuItemId, preventInputBlur } from '../utils';
import { optionType } from '../propTypes';
const propTypes = {
    option: optionType.isRequired,
    position: PropTypes.number,
};
export function useItem({ label, onClick, option, position, ...props }) {
    const { activeIndex, id, isOnlyResult, onActiveItemChange, onInitialItemChange, onMenuItemClick, setItem, } = useTypeaheadContext();
    const itemRef = useRef(null);
    useEffect(() => {
        if (position === 0) {
            onInitialItemChange(option);
        }
    });
    useEffect(() => {
        if (position === activeIndex) {
            onActiveItemChange(option);
            const node = itemRef.current;
            node &&
                scrollIntoView(node, {
                    block: 'nearest',
                    boundary: node.parentNode,
                    inline: 'nearest',
                    scrollMode: 'if-needed',
                });
        }
    });
    const handleClick = useCallback((e) => {
        onMenuItemClick(option, e);
        onClick && onClick(e);
    }, [onClick, onMenuItemClick, option]);
    const active = isOnlyResult || activeIndex === position;
    setItem(option, position);
    return {
        ...props,
        active,
        'aria-label': label,
        'aria-selected': active,
        id: getMenuItemId(id, position),
        onClick: handleClick,
        onMouseDown: preventInputBlur,
        ref: itemRef,
        role: 'option',
    };
}
export function withItem(Component) {
    const WrappedMenuItem = (props) => (React.createElement(Component, { ...props, ...useItem(props) }));
    WrappedMenuItem.displayName = `withItem(${getDisplayName(Component)})`;
    WrappedMenuItem.propTypes = propTypes;
    return WrappedMenuItem;
}