import * as React from 'react'; import classNames from 'classnames'; import type { BaseOptionType, DefaultOptionType, FieldNames, MultipleCascaderProps as RcMultipleCascaderProps, ShowSearchType, SingleCascaderProps as RcSingleCascaderProps, } from 'rc-cascader'; import RcCascader from 'rc-cascader'; import type { Placement } from 'rc-select/lib/BaseSelect'; import omit from 'rc-util/lib/omit'; import { useZIndex } from '../_util/hooks/useZIndex'; import type { SelectCommonPlacement } from '../_util/motion'; import { getTransitionName } from '../_util/motion'; import genPurePanel from '../_util/PurePanel'; import type { InputStatus } from '../_util/statusUtils'; import { getMergedStatus, getStatusClassNames } from '../_util/statusUtils'; import { devUseWarning } from '../_util/warning'; import { ConfigContext } from '../config-provider'; import DefaultRenderEmpty from '../config-provider/defaultRenderEmpty'; import DisabledContext from '../config-provider/DisabledContext'; import useCSSVarCls from '../config-provider/hooks/useCSSVarCls'; import useSize from '../config-provider/hooks/useSize'; import type { SizeType } from '../config-provider/SizeContext'; import { FormItemInputContext } from '../form/context'; import mergedBuiltinPlacements from '../select/mergedBuiltinPlacements'; import useSelectStyle from '../select/style'; import useIcons from '../select/useIcons'; import useShowArrow from '../select/useShowArrow'; import { useCompactItemContext } from '../space/Compact'; import useBase from './hooks/useBase'; import useCheckable from './hooks/useCheckable'; import useColumnIcons from './hooks/useColumnIcons'; import CascaderPanel from './Panel'; import useStyle from './style'; import type { Variant } from '../form/hooks/useVariants'; import useVariant from '../form/hooks/useVariants'; // Align the design since we use `rc-select` in root. This help: // - List search content will show all content // - Hover opacity style // - Search filter match case export type { BaseOptionType, DefaultOptionType }; export type FieldNamesType = FieldNames; export type FilledFieldNamesType = Required; const { SHOW_CHILD, SHOW_PARENT } = RcCascader; function highlightKeyword(str: string, lowerKeyword: string, prefixCls?: string) { const cells = str .toLowerCase() .split(lowerKeyword) .reduce((list, cur, index) => (index === 0 ? [cur] : [...list, lowerKeyword, cur]), []); const fillCells: React.ReactNode[] = []; let start = 0; cells.forEach((cell, index) => { const end = start + cell.length; let originWorld: React.ReactNode = str.slice(start, end); start = end; if (index % 2 === 1) { originWorld = ( // eslint-disable-next-line react/no-array-index-key {originWorld} ); } fillCells.push(originWorld); }); return fillCells; } const defaultSearchRender: ShowSearchType['render'] = (inputValue, path, prefixCls, fieldNames) => { const optionList: React.ReactNode[] = []; // We do lower here to save perf const lower = inputValue.toLowerCase(); path.forEach((node, index) => { if (index !== 0) { optionList.push(' / '); } let label = node[fieldNames.label!]; const type = typeof label; if (type === 'string' || type === 'number') { label = highlightKeyword(String(label), lower, prefixCls); } optionList.push(label); }); return optionList; }; type SingleCascaderProps = Omit< RcSingleCascaderProps, 'checkable' | 'options' > & { multiple?: false; }; type MultipleCascaderProps = Omit< RcMultipleCascaderProps, 'checkable' | 'options' > & { multiple: true; }; type UnionCascaderProps = | SingleCascaderProps | MultipleCascaderProps; export type CascaderProps = UnionCascaderProps & { multiple?: boolean; size?: SizeType; /** * @deprecated `showArrow` is deprecated which will be removed in next major version. It will be a * default behavior, you can hide it by setting `suffixIcon` to null. */ showArrow?: boolean; disabled?: boolean; /** @deprecated Use `variant` instead. */ bordered?: boolean; placement?: SelectCommonPlacement; suffixIcon?: React.ReactNode; options?: DataNodeType[]; status?: InputStatus; autoClearSearchValue?: boolean; rootClassName?: string; popupClassName?: string; /** @deprecated Please use `popupClassName` instead */ dropdownClassName?: string; /** * @since 5.13.0 * @default "outlined" */ variant?: Variant; }; export interface CascaderRef { focus: () => void; blur: () => void; } const Cascader = React.forwardRef>((props, ref) => { const { prefixCls: customizePrefixCls, size: customizeSize, disabled: customDisabled, className, rootClassName, multiple, bordered = true, transitionName, choiceTransitionName = '', popupClassName, dropdownClassName, expandIcon, placement, showSearch, allowClear = true, notFoundContent, direction, getPopupContainer, status: customStatus, showArrow, builtinPlacements, style, variant: customVariant, ...rest } = props; const restProps = omit(rest, ['suffixIcon']); const { getPopupContainer: getContextPopupContainer, getPrefixCls, popupOverflow, cascader, } = React.useContext(ConfigContext); // =================== Form ===================== const { status: contextStatus, hasFeedback, isFormItemInput, feedbackIcon, } = React.useContext(FormItemInputContext); const mergedStatus = getMergedStatus(contextStatus, customStatus); // =================== Warning ===================== if (process.env.NODE_ENV !== 'production') { const warning = devUseWarning('Cascader'); warning.deprecated(!dropdownClassName, 'dropdownClassName', 'popupClassName'); warning( !('showArrow' in props), 'deprecated', '`showArrow` is deprecated which will be removed in next major version. It will be a default behavior, you can hide it by setting `suffixIcon` to null.', ); warning.deprecated(!('bordered' in props), 'bordered', 'variant'); } // ==================== Prefix ===================== const [prefixCls, cascaderPrefixCls, mergedDirection, renderEmpty] = useBase( customizePrefixCls, direction, ); const isRtl = mergedDirection === 'rtl'; const rootPrefixCls = getPrefixCls(); const rootCls = useCSSVarCls(prefixCls); const [wrapSelectCSSVar, hashId, cssVarCls] = useSelectStyle(prefixCls, rootCls); const cascaderRootCls = useCSSVarCls(cascaderPrefixCls); const [wrapCascaderCSSVar] = useStyle(cascaderPrefixCls, cascaderRootCls); const { compactSize, compactItemClassnames } = useCompactItemContext(prefixCls, direction); const [variant, enableVariantCls] = useVariant(customVariant, bordered); // =================== No Found ==================== const mergedNotFoundContent = notFoundContent || renderEmpty?.('Cascader') || ( ); // =================== Dropdown ==================== const mergedDropdownClassName = classNames( popupClassName || dropdownClassName, `${cascaderPrefixCls}-dropdown`, { [`${cascaderPrefixCls}-dropdown-rtl`]: mergedDirection === 'rtl', }, rootClassName, rootCls, cascaderRootCls, hashId, cssVarCls, ); // ==================== Search ===================== const mergedShowSearch = React.useMemo(() => { if (!showSearch) { return showSearch; } let searchConfig: ShowSearchType = { render: defaultSearchRender, }; if (typeof showSearch === 'object') { searchConfig = { ...searchConfig, ...showSearch, }; } return searchConfig; }, [showSearch]); // ===================== Size ====================== const mergedSize = useSize((ctx) => customizeSize ?? compactSize ?? ctx); // ===================== Disabled ===================== const disabled = React.useContext(DisabledContext); const mergedDisabled = customDisabled ?? disabled; // ===================== Icon ====================== const [mergedExpandIcon, loadingIcon] = useColumnIcons(prefixCls, isRtl, expandIcon); // =================== Multiple ==================== const checkable = useCheckable(cascaderPrefixCls, multiple); // ===================== Icons ===================== const showSuffixIcon = useShowArrow(props.suffixIcon, showArrow); const { suffixIcon, removeIcon, clearIcon } = useIcons({ ...props, hasFeedback, feedbackIcon, showSuffixIcon, multiple, prefixCls, componentName: 'Cascader', }); // ===================== Placement ===================== const memoPlacement = React.useMemo(() => { if (placement !== undefined) { return placement; } return isRtl ? 'bottomRight' : 'bottomLeft'; }, [placement, isRtl]); const mergedAllowClear = allowClear === true ? { clearIcon } : allowClear; // ============================ zIndex ============================ const [zIndex] = useZIndex('SelectLike', restProps.dropdownStyle?.zIndex as number); // ==================== Render ===================== const renderNode = ( ); return wrapCascaderCSSVar(wrapSelectCSSVar(renderNode)); }) as unknown as (( props: React.PropsWithChildren> & React.RefAttributes, ) => React.ReactElement) & { displayName: string; SHOW_PARENT: typeof SHOW_PARENT; SHOW_CHILD: typeof SHOW_CHILD; Panel: typeof CascaderPanel; _InternalPanelDoNotUseOrYouWillBeFired: typeof PurePanel; }; if (process.env.NODE_ENV !== 'production') { Cascader.displayName = 'Cascader'; } // We don't care debug panel /* istanbul ignore next */ const PurePanel = genPurePanel(Cascader); Cascader.SHOW_PARENT = SHOW_PARENT; Cascader.SHOW_CHILD = SHOW_CHILD; Cascader.Panel = CascaderPanel; Cascader._InternalPanelDoNotUseOrYouWillBeFired = PurePanel; export default Cascader;