import React from "react";
import DataList from "./data-list";
import { Dayjs } from "dayjs";
interface FilterItemPorps {
    label?: string;
    defaultValue?: any;
    onChange?: (value: any) => void;
}
declare abstract class FilterItem<T extends FilterItemPorps = any, S = any> extends React.Component<T, S> {
    abstract renderInner(): React.ReactNode;
    abstract get expression(): string | null;
    protected value: T["defaultValue"] | undefined;
    render(): React.ReactNode;
}
export type FilterOption = {
    label: string;
    value: any;
    disabled?: boolean;
};
export interface FilterGroupProps extends FilterItemPorps {
    field?: string;
    options?: FilterOption[];
}
export declare class FilterGroup extends FilterItem<FilterGroupProps> {
    private valueMap;
    private normalizedOptions;
    private defaultSegValue;
    constructor(props: FilterGroupProps);
    get expression(): string | null;
    renderInner(): React.ReactNode;
}
export interface FilterSelectProps extends FilterItemPorps {
    field?: string;
    placeholder?: string;
    options?: FilterOption[];
    multiple?: boolean;
}
export declare class FilterSelect extends FilterItem<FilterSelectProps> {
    /** 空串 / 空值代表“未选择”，须按 undefined 交给 Select，否则 rc-select 会当成一个空值选项而顶掉 placeholder */
    private get selectValue();
    renderInner(): React.ReactNode;
    get expression(): string | null;
}
export interface FilterSearchProps extends FilterItemPorps {
    placeholder?: string;
    fields?: string[];
}
export declare class FilterSearch extends FilterItem<FilterSearchProps> {
    constructor(props: FilterSearchProps);
    buildLikeGroup(fields: string[] | undefined, keyword: string): string | undefined;
    get expression(): string | null;
    renderInner(): React.ReactNode;
}
export interface FilterDateRangeProps extends FilterItemPorps {
    field?: string;
}
export declare class FilterDateRange extends FilterItem<FilterDateRangeProps> {
    renderDateRangeValue(value: any): [Dayjs | undefined, Dayjs | undefined] | undefined;
    isEmptyFilterValue(value: any): boolean;
    formatDateString(value: any): string;
    get expression(): string | null;
    renderInner(): React.ReactNode;
}
export interface FilterBarProps {
    children?: React.ReactNode;
}
export declare class FilterBar extends React.Component<FilterBarProps> {
    private filterItems;
    static contextType: React.Context<DataList<import("../../type").DataItem> | null>;
    context: DataList | null;
    search(): void;
    rebuildChildren(): React.ReactElement<any, string | React.JSXElementConstructor<any>>[];
    render(): React.ReactNode;
}
export {};