299 lines
9.9 KiB
TypeScript
299 lines
9.9 KiB
TypeScript
import React, { createRef, ReactElement, useEffect, useState } from 'react';
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import { debounce } from 'debounce';
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import styled from 'styled-components/macro';
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import tw from 'twin.macro';
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import Input from '@/components/elements/Input';
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import Label from '@/components/elements/Label';
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import InputSpinner from '@/components/elements/InputSpinner';
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const Dropdown = styled.div<{ expanded: boolean }>`
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${tw`absolute z-10 w-full mt-1 rounded-md shadow-lg bg-neutral-900`};
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${props => !props.expanded && tw`hidden`};
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`;
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interface OptionProps<T> {
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selectId: string;
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id: number;
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item: T;
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active: boolean;
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isHighlighted?: boolean;
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onClick?: (item: T) => (e: React.MouseEvent) => void;
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children: React.ReactNode;
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}
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interface IdObj {
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id: number;
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}
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export const Option = <T extends IdObj>({ selectId, id, item, active, isHighlighted, onClick, children }: OptionProps<T>) => {
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if (isHighlighted === undefined) {
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isHighlighted = false;
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}
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// This should never be true, but just in-case we set it to an empty function to make sure shit doesn't blow up.
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if (onClick === undefined) {
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// eslint-disable-next-line @typescript-eslint/no-empty-function
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onClick = () => () => {};
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}
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if (active) {
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return (
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<li id={selectId + '-select-item-' + id} role="option" css={[ tw`relative py-2 pl-3 cursor-pointer select-none text-neutral-200 pr-9 hover:bg-neutral-700`, isHighlighted ? tw`bg-neutral-700` : null ]} onClick={onClick(item)}>
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<div css={tw`flex items-center`}>
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<span css={tw`block font-medium truncate`}>
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{children}
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</span>
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</div>
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<span css={tw`absolute inset-y-0 right-0 flex items-center pr-4`}>
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<svg css={tw`w-5 h-5 text-primary-400`} xmlns="http://www.w3.org/2000/svg" viewBox="0 0 20 20" fill="currentColor" aria-hidden="true">
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<path clipRule="evenodd" fillRule="evenodd" d="M16.707 5.293a1 1 0 010 1.414l-8 8a1 1 0 01-1.414 0l-4-4a1 1 0 011.414-1.414L8 12.586l7.293-7.293a1 1 0 011.414 0z"/>
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</svg>
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</span>
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</li>
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);
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}
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return (
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<li id={selectId + 'select-item-' + id} role="option" css={[ tw`relative py-2 pl-3 cursor-pointer select-none text-neutral-200 pr-9 hover:bg-neutral-700`, isHighlighted ? tw`bg-neutral-700` : null ]} onClick={onClick(item)}>
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<div css={tw`flex items-center`}>
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<span css={tw`block font-normal truncate`}>
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{children}
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</span>
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</div>
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</li>
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);
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};
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interface SearchableSelectProps<T> {
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id: string;
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name: string;
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nullable: boolean;
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selected: T | null;
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setSelected: (item: T | null) => void;
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items: T[] | null;
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setItems: (items: T[] | null) => void;
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onSearch: (query: string) => Promise<void>;
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onSelect: (item: T | null) => void;
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getSelectedText: (item: T | null) => string;
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children: React.ReactNode;
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}
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export const SearchableSelect = <T extends IdObj>({ id, name, selected, setSelected, items, setItems, onSearch, onSelect, getSelectedText, children }: SearchableSelectProps<T>) => {
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const [ loading, setLoading ] = useState(false);
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const [ expanded, setExpanded ] = useState(false);
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const [ inputText, setInputText ] = useState('');
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const [ highlighted, setHighlighted ] = useState<number | null>(null);
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const searchInput = createRef<HTMLInputElement>();
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const itemsList = createRef<HTMLDivElement>();
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const onFocus = () => {
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setInputText('');
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setItems(null);
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setExpanded(true);
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setHighlighted(null);
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};
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const onBlur = () => {
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setInputText(getSelectedText(selected) || '');
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setItems(null);
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setExpanded(false);
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setHighlighted(null);
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};
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const search = debounce((query: string) => {
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if (!expanded) {
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return;
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}
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if (query === '' || query.length < 2) {
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setItems(null);
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setHighlighted(null);
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return;
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}
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setLoading(true);
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onSearch(query).then(() => setLoading(false));
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}, 250);
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const handleInputKeydown = (e: React.KeyboardEvent) => {
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if (e.key === 'Tab' || e.key === 'Escape') {
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onBlur();
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return;
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}
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if (!items) {
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return;
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}
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if (e.key === 'ArrowUp' || e.key === 'ArrowDown') {
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// Prevent up and down arrows from moving the cursor in the input.
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e.preventDefault();
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if (highlighted === null) {
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setHighlighted(items[0].id);
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return;
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}
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const item = items.find((item) => item.id === highlighted);
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if (!item) {
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return;
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}
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let index = items.indexOf(item);
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if (e.key === 'ArrowUp') {
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if (--index < 0) {
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return;
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}
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} else {
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if (++index >= items.length) {
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return;
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}
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}
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setHighlighted(items[index].id);
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return;
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}
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// Prevent the form from being submitted if the user accidentally hits enter
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// while focused on the select.
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if (e.key === 'Enter') {
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e.preventDefault();
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const item = items.find((item) => item.id === highlighted);
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if (!item) {
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return;
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}
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setSelected(item);
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}
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};
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useEffect(() => {
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const clickHandler = (e: MouseEvent) => {
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const input = searchInput.current;
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const menu = itemsList.current;
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if (e.button === 2 || !expanded || !input || !menu) {
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return;
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}
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if (e.target === input || input.contains(e.target as Node)) {
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return;
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}
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if (e.target === menu || menu.contains(e.target as Node)) {
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return;
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}
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if (e.target === input || input.contains(e.target as Node)) {
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return;
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}
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if (e.target === menu || menu.contains(e.target as Node)) {
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return;
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}
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onBlur();
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};
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const contextmenuHandler = () => {
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onBlur();
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};
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window.addEventListener('click', clickHandler);
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window.addEventListener('contextmenu', contextmenuHandler);
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return () => {
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window.removeEventListener('click', clickHandler);
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window.removeEventListener('contextmenu', contextmenuHandler);
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};
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}, [ expanded ]);
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const onClick = (item: T) => () => {
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onSelect(item);
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setExpanded(false);
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setInputText(getSelectedText(selected) || '');
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};
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useEffect(() => {
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if (expanded) {
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return;
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}
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setInputText(getSelectedText(selected) || '');
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}, [ selected ]);
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// This shit is really stupid but works, so is it really stupid?
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const c = React.Children.map(children, child => React.cloneElement(child as ReactElement, {
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isHighlighted: ((child as ReactElement).props as OptionProps<T>).id === highlighted,
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onClick: onClick.bind(child),
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}));
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return (
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<div>
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<Label htmlFor={id + '-select-label'}>{name}</Label>
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<div css={tw`relative mt-1`}>
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<InputSpinner visible={loading}>
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<Input
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ref={searchInput}
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type="text"
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className="ignoreReadOnly"
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id={id}
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name={id}
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value={inputText}
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readOnly={!expanded}
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onFocus={onFocus}
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onChange={e => {
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setInputText(e.currentTarget.value);
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search(e.currentTarget.value);
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}}
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onKeyDown={handleInputKeydown}
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/>
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</InputSpinner>
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<div css={tw`absolute inset-y-0 right-0 flex items-center pr-2 ml-3 pointer-events-none`}>
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<svg css={tw`w-5 h-5 text-neutral-400`} xmlns="http://www.w3.org/2000/svg" viewBox="0 0 20 20" fill="currentColor" aria-hidden="true">
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<path clipRule="evenodd" fillRule="evenodd" d="M10 3a1 1 0 01.707.293l3 3a1 1 0 01-1.414 1.414L10 5.414 7.707 7.707a1 1 0 01-1.414-1.414l3-3A1 1 0 0110 3zm-3.707 9.293a1 1 0 011.414 0L10 14.586l2.293-2.293a1 1 0 011.414 1.414l-3 3a1 1 0 01-1.414 0l-3-3a1 1 0 010-1.414z"/>
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</svg>
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</div>
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<Dropdown ref={itemsList} expanded={expanded}>
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{ items === null || items.length < 1 ?
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items === null || inputText.length < 2 ?
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<div css={tw`flex flex-row items-center h-10 px-3`}>
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<p css={tw`text-sm`}>Please type 2 or more characters.</p>
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</div>
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:
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<div css={tw`flex flex-row items-center h-10 px-3`}>
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<p css={tw`text-sm`}>No results found.</p>
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</div>
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:
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<ul
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tabIndex={-1}
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role={id + '-select'}
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aria-labelledby={id + '-select-label'}
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aria-activedescendant={id + '-select-item-' + selected?.id}
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css={tw`py-2 overflow-auto text-base rounded-md max-h-56 ring-1 ring-black ring-opacity-5 focus:outline-none sm:text-sm`}
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>
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{c}
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</ul>
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}
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</Dropdown>
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</div>
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</div>
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);
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};
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export default SearchableSelect;
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