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| import React, { useRef, useState, useMemo, useLayoutEffect } from 'react';
import { Checkbox, Button } from 'antd';
import { FixedSizeList, areEqual, ListChildComponentProps } from 'react-window';
import classNames from 'classnames';
import { SearchOutlined, DeleteOutlined, CloseOutlined } from '@ant-design/icons';
import { MultiOptionType } from './multi-select';
import { useTranslation } from '../../use';
export type MultiSelectPopupProps<T extends string | number> = {
showSearch?: boolean;
searchPlaceholder?: string;
create?: boolean;
value: T[];
open: boolean;
onChange: (value: T[]) => void;
options: MultiOptionType<T>[];
filterOption?: (inputValue: string, option: MultiOptionType<T>) => boolean;
width: number;
onClick?: (event: React.MouseEvent<HTMLDivElement, MouseEvent>) => void;
listItemHeight?: number;
listHeight?: number;
valueIsNumber?: boolean;
};
export type MultiSelectPopupComponent<T extends string | number> = React.FC<MultiSelectPopupProps<T>>;
const MultiSelectPopup: {
<T extends string | number>(...args: Parameters<MultiSelectPopupComponent<T>>): ReturnType<MultiSelectPopupComponent<T>>;
} = <T extends string | number>({
showSearch = true,
searchPlaceholder = '',
create = false,
value,
open,
onChange,
options,
filterOption,
width,
onClick,
listItemHeight = 32,
listHeight = 320,
valueIsNumber = false,
}: Parameters<MultiSelectPopupComponent<T>>[0]) => {
const t = useTranslation();
const [showSelectedOptionsState, setShowSelectedOptionsState] = useState(true);
const [searchValueState, setSearchValueState] = useState('');
const _changeItemFnRef = useRef((item: T, operate: 'add' | 'remove') => {
onChange(operate === 'add' ? value.concat(item) : value.filter((x) => x !== item));
});
_changeItemFnRef.current = (item: T, operate: 'add' | 'remove') => {
onChange(operate === 'add' ? value.concat(item) : value.filter((x) => x !== item));
};
const filterOptions = useMemo(() => {
const _filterFn =
filterOption ||
((inputValue: string, option: MultiOptionType<T>) =>
!inputValue ||
_.toLower(_.toString(option.label)).includes(_.toLower(inputValue)) ||
_.toLower(_.toString(option.value)).includes(_.toLower(inputValue)));
const _searchInputValue = _.trim(searchValueState);
const filterOptions = _.filter(options, (option) => _filterFn(_searchInputValue, option));
if (_searchInputValue && !_.find(filterOptions, (option) => option.value === _searchInputValue) && create) {
filterOptions.push({ label: _searchInputValue, value: (valueIsNumber ? _.toNumber(_searchInputValue) : _searchInputValue) as T });
}
return filterOptions;
}, [options, searchValueState, filterOption]);
const { checkStateFilterOptions, checkedAllOptions } = useMemo(() => {
const checkStateFilterOptions = _.map(filterOptions, (x) => ({ ...x, checked: _.includes(value, x.value) }));
return { checkStateFilterOptions, checkedAllOptions: _.every(checkStateFilterOptions, (item) => item.checked) };
}, [filterOptions, value]);
const selectedOptions = useMemo(() => {
const optionsMap = _.mapKeys(options, 'value');
return _.map(value, (x) => optionsMap[x] || { label: x, value: x });
}, [options, value]);
// fix: need calc input item height
const minListHeight = _.min([listHeight, _.max([filterOptions.length * listItemHeight, selectedOptions.length * listItemHeight])]);
const OptionRow = useMemo(
() =>
React.memo((props: ListChildComponentProps) => {
const { index, style, data } = props;
return (
<div className='ant-select-item ant-select-item-option' style={style} title={data[index].label}>
<Checkbox
className='ant-select-item-option-content'
checked={data[index].checked}
onChange={(event) => _changeItemFnRef.current(data[index].value, event.target.checked ? 'add' : 'remove')}
>
{data[index].label}
</Checkbox>
</div>
);
}, areEqual),
[],
);
const SelectedOptionRow = useMemo(
() =>
React.memo((props: ListChildComponentProps) => {
const { index, style, data } = props;
return (
<div className='ant-select-item ant-select-item-option' style={style}>
<Button
className='ant-select-item-option-selected-remove-btn'
size='small'
onClick={() => _changeItemFnRef.current(data[index].value, 'remove')}
title={data[index].label}
>
<span className='ant-select-item-option-selected-remove-btn-label'>{data[index].label}</span>
<CloseOutlined className='ant-select-item-option-selected-remove-btn-icon' />
</Button>
</div>
);
}, areEqual),
[],
);
const inputRef = useRef<HTMLInputElement>(null);
useLayoutEffect(() => {
if (open && inputRef.current) {
inputRef.current.focus();
}
}, [open]);
return (
<div className='multi-select-popup' style={{ width: showSelectedOptionsState ? width * 2 : width }} onClick={onClick}>
{showSearch && (
<div className='multi-select-popup-search-bar'>
<SearchOutlined className='multi-select-popup-search-icon' />
<input
ref={inputRef}
className='multi-select-popup-search-input ant-input'
value={searchValueState}
onChange={(event) => setSearchValueState(event.target.value)}
placeholder={searchPlaceholder}
/>
</div>
)}
<div className='multi-select-popup-body'>
<div className='multi-select-popup-left-content' style={{ width: width }}>
<div className='multi-select-popup-options-control-bar'>
<Checkbox
disabled={checkStateFilterOptions.length === 0}
checked={checkStateFilterOptions.length > 0 && checkedAllOptions}
onChange={(event) =>
onChange(
event.target.checked
? _.union(
value,
checkStateFilterOptions.map((x) => x.value),
)
: _.difference(
value,
checkStateFilterOptions.map((x) => x.value),
),
)
}
>
{t('MULTI_SELECT_LABEL_SELECT_ALL')}
</Checkbox>
<Checkbox checked={showSelectedOptionsState} onChange={(event) => setShowSelectedOptionsState(event.target.checked)}>
{t('MULTI_SELECT_LABEL_VIEW_SELECTED_ITEM')}
</Checkbox>
</div>
<div className='multi-select-popup-options-list'>
<FixedSizeList
height={minListHeight}
itemCount={checkStateFilterOptions.length}
itemSize={listItemHeight}
width={width}
itemData={checkStateFilterOptions}
>
{OptionRow}
</FixedSizeList>
</div>
</div>
<div className={classNames('multi-select-popup-right-content', { hide: !showSelectedOptionsState })} style={{ width: width }}>
<div className='multi-select-popup-options-control-bar'>
<span className='multi-select-popup-options-selected-tips'>
{t('MULTI_SELECT_LABEL_SELECTED_ITEM_PREFIX')}
<span className='multi-select-popup-options-selected-tips-num'>{value.length}</span>
{t('MULTI_SELECT_LABEL_SELECTED_ITEM_SUFFIX')}
</span>
<Button className='multi-select-popup-options-remove-all-btn' size='small' type='link' danger onClick={() => onChange([])}>
<DeleteOutlined />
</Button>
</div>
<div className='multi-select-popup-selected-options-list'>
<FixedSizeList
height={minListHeight}
itemCount={selectedOptions.length}
itemSize={listItemHeight}
width={width}
itemData={selectedOptions}
>
{SelectedOptionRow}
</FixedSizeList>
</div>
</div>
</div>
<style jsx global>{`
// 样式比较长, 此处省略
`}</style>
</div>
);
};
export default MultiSelectPopup;
|
