mirror of
https://git.kescher.at/CatCatNya/catstodon.git
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185 lines
4.9 KiB
TypeScript
185 lines
4.9 KiB
TypeScript
import { useCallback, useEffect, useRef, useState } from 'react';
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import classNames from 'classnames';
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import { supportsPassiveEvents } from 'detect-passive-events';
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import InfoIcon from '@/material-icons/400-24px/info.svg?react';
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import type { IconProp } from './icon';
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import { Icon } from './icon';
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const listenerOptions = supportsPassiveEvents
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? { passive: true, capture: true }
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: true;
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export interface SelectItem {
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value: string;
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icon?: string;
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iconComponent?: IconProp;
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text: string;
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meta: string;
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extra?: string;
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}
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interface Props {
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value: string;
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classNamePrefix: string;
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style?: React.CSSProperties;
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items: SelectItem[];
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onChange: (value: string) => void;
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onClose: () => void;
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}
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export const DropdownSelector: React.FC<Props> = ({
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style,
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items,
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value,
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classNamePrefix = 'privacy-dropdown',
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onClose,
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onChange,
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}) => {
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const nodeRef = useRef<HTMLUListElement>(null);
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const focusedItemRef = useRef<HTMLLIElement>(null);
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const [currentValue, setCurrentValue] = useState(value);
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const handleDocumentClick = useCallback(
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(e: MouseEvent | TouchEvent) => {
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if (
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nodeRef.current &&
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e.target instanceof Node &&
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!nodeRef.current.contains(e.target)
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) {
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onClose();
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e.stopPropagation();
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}
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},
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[nodeRef, onClose],
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);
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const handleClick = useCallback(
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(
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e: React.MouseEvent<HTMLLIElement> | React.KeyboardEvent<HTMLLIElement>,
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) => {
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const value = e.currentTarget.getAttribute('data-index');
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e.preventDefault();
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onClose();
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if (value) onChange(value);
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},
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[onClose, onChange],
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);
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const handleKeyDown = useCallback(
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(e: React.KeyboardEvent<HTMLLIElement>) => {
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const value = e.currentTarget.getAttribute('data-index');
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const index = items.findIndex((item) => item.value === value);
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let element: Element | null | undefined = null;
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switch (e.key) {
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case 'Escape':
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onClose();
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break;
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case ' ':
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case 'Enter':
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handleClick(e);
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break;
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case 'ArrowDown':
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element =
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nodeRef.current?.children[index + 1] ??
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nodeRef.current?.firstElementChild;
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break;
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case 'ArrowUp':
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element =
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nodeRef.current?.children[index - 1] ??
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nodeRef.current?.lastElementChild;
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break;
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case 'Tab':
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if (e.shiftKey) {
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element =
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nodeRef.current?.children[index + 1] ??
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nodeRef.current?.firstElementChild;
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} else {
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element =
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nodeRef.current?.children[index - 1] ??
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nodeRef.current?.lastElementChild;
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}
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break;
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case 'Home':
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element = nodeRef.current?.firstElementChild;
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break;
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case 'End':
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element = nodeRef.current?.lastElementChild;
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break;
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}
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if (element && element instanceof HTMLElement) {
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const selectedValue = element.getAttribute('data-index');
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element.focus();
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if (selectedValue) setCurrentValue(selectedValue);
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e.preventDefault();
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e.stopPropagation();
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}
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},
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[nodeRef, items, onClose, handleClick, setCurrentValue],
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);
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useEffect(() => {
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document.addEventListener('click', handleDocumentClick, { capture: true });
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document.addEventListener('touchend', handleDocumentClick, listenerOptions);
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focusedItemRef.current?.focus({ preventScroll: true });
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return () => {
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document.removeEventListener('click', handleDocumentClick, {
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capture: true,
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});
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document.removeEventListener(
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'touchend',
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handleDocumentClick,
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listenerOptions,
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);
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};
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}, [handleDocumentClick]);
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return (
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<ul style={style} role='listbox' ref={nodeRef}>
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{items.map((item) => (
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<li
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role='option'
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tabIndex={0}
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key={item.value}
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data-index={item.value}
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onKeyDown={handleKeyDown}
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onClick={handleClick}
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className={classNames(`${classNamePrefix}__option`, {
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active: item.value === currentValue,
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})}
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aria-selected={item.value === currentValue}
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ref={item.value === currentValue ? focusedItemRef : null}
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>
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{item.icon && item.iconComponent && (
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<div className={`${classNamePrefix}__option__icon`}>
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<Icon id={item.icon} icon={item.iconComponent} />
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</div>
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)}
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<div className={`${classNamePrefix}__option__content`}>
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<strong>{item.text}</strong>
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{item.meta}
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</div>
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{item.extra && (
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<div
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className={`${classNamePrefix}__option__additional`}
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title={item.extra}
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>
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<Icon id='info-circle' icon={InfoIcon} />
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</div>
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)}
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</li>
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))}
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</ul>
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);
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};
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