77 lines
1.9 KiB
JavaScript
77 lines
1.9 KiB
JavaScript
import Menu, { MenuItem } from '@rc-component/menu';
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import React, { useEffect, useRef } from 'react';
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import MentionsContext from "./MentionsContext";
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/**
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* We only use Menu to display the candidate.
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* The focus is controlled by textarea to make accessibility easy.
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*/
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function DropdownMenu(props) {
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const {
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notFoundContent,
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activeIndex,
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setActiveIndex,
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selectOption,
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onFocus,
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onBlur,
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onScroll
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} = React.useContext(MentionsContext);
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const {
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prefixCls,
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options,
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opened
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} = props;
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const activeOption = options[activeIndex] || {};
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const menuRef = useRef(null);
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// Monitor the changes in ActiveIndex and scroll to the visible area if there are any changes
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useEffect(() => {
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if (activeIndex === -1 || !menuRef.current || !opened) {
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return;
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}
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const activeItem = menuRef.current?.findItem?.({
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key: activeOption.key
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});
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if (activeItem) {
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activeItem.scrollIntoView({
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block: 'nearest',
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inline: 'nearest'
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});
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}
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}, [activeIndex, activeOption.key, opened]);
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return /*#__PURE__*/React.createElement(Menu, {
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ref: menuRef,
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prefixCls: `${prefixCls}-menu`,
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activeKey: activeOption.key,
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onSelect: ({
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key
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}) => {
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const option = options.find(({
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key: optionKey
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}) => optionKey === key);
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selectOption(option);
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},
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onFocus: onFocus,
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onBlur: onBlur,
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onScroll: onScroll
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}, options.map((option, index) => {
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const {
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key,
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disabled,
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className,
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style,
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label
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} = option;
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return /*#__PURE__*/React.createElement(MenuItem, {
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key: key,
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disabled: disabled,
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className: className,
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style: style,
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onMouseEnter: () => {
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setActiveIndex(index);
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}
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}, label);
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}), !options.length && /*#__PURE__*/React.createElement(MenuItem, {
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disabled: true
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}, notFoundContent));
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}
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export default DropdownMenu; |