import type { UiSchemaAttributeRegistry } from "../attribute-registry.js";
import type { UiSchemaObject } from "../types.js";
import { UiCustomAttributeCollection } from "./custom-attributes.js";
import type { UiSchemaFactory } from "./factory.js";
import type { UiElement } from "./node.js";
import { LabeledLayout, UnlabeledLayout } from "./simple-layout.js";
import type { UiElementVisitor } from "./visitor.js";
export declare class Stepper extends UnlabeledLayout {
    readonly elementKind: "Stepper";
    constructor(registry?: UiSchemaAttributeRegistry, customAttributes?: UiCustomAttributeCollection);
    protected validateChild(child: UiElement): void;
    static fromJSON(json: UiSchemaObject, factory: UiSchemaFactory): Stepper;
    accept<T>(visitor: UiElementVisitor<T>): T;
    deepClone(): Stepper;
    protected writeElementDefinition(json: UiSchemaObject): void;
}
export declare class Step extends LabeledLayout {
    readonly elementKind: "Step";
    constructor(label?: string, registry?: UiSchemaAttributeRegistry, customAttributes?: UiCustomAttributeCollection);
    static fromJSON(json: UiSchemaObject, factory: UiSchemaFactory): Step;
    accept<T>(visitor: UiElementVisitor<T>): T;
    deepClone(): Step;
    protected writeElementDefinition(json: UiSchemaObject): void;
}
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