import type { DropdownSchema, DropdownOptionSchema, RadioButtonsGroupSchema, RadioOptionSchema, CheckboxGroupSchema, CheckboxOptionSchema, DynamicRef, FormRef } from '../types';
import { FormFieldComponent } from './base';
export declare class Dropdown<N extends string = string> extends FormFieldComponent<N> {
    private readonly label;
    private readonly dataSource;
    protected readonly type: "Dropdown";
    private _initValue?;
    constructor(name: N, label: string | DynamicRef, dataSource: DynamicRef | readonly DropdownOptionSchema[]);
    get ref(): FormRef<N>;
    setInitValue(value: string | DynamicRef): this;
    toJSON(): DropdownSchema;
}
export declare class RadioButtonsGroup<N extends string = string> extends FormFieldComponent<N> {
    private readonly label;
    private readonly dataSource;
    protected readonly type: "RadioButtonsGroup";
    private _initValue?;
    constructor(name: N, label: string | DynamicRef, dataSource: DynamicRef | readonly RadioOptionSchema[]);
    get ref(): FormRef<N>;
    setInitValue(value: string | DynamicRef): this;
    toJSON(): RadioButtonsGroupSchema;
}
export declare class CheckboxGroup<N extends string = string> extends FormFieldComponent<N> {
    private readonly label;
    private readonly dataSource;
    protected readonly type: "CheckboxGroup";
    private _minSelectedItems?;
    private _maxSelectedItems?;
    private _initValue?;
    constructor(name: N, label: string | DynamicRef, dataSource: DynamicRef | readonly CheckboxOptionSchema[]);
    get ref(): FormRef<N>;
    setMinSelectedItems(min: number): this;
    setMaxSelectedItems(max: number): this;
    setInitValue(value: string[] | DynamicRef): this;
    toJSON(): CheckboxGroupSchema;
}