import type { UiElementKind, UiSchemaObject } from "../types.js";
import type { UiSchemaFactory } from "./factory.js";
import type { UiElementVisitor } from "./visitor.js";
import { UiCustomAttributeCollection } from "./custom-attributes.js";
import { UiRule } from "./ui-rule.js";
export type { UiElementKind };
export declare abstract class UiElement {
    protected readonly customAttributes: UiCustomAttributeCollection;
    protected _rule?: UiRule;
    protected _options: Record<string, unknown>;
    protected _i18n?: string;
    protected constructor(customAttributes: UiCustomAttributeCollection);
    abstract readonly elementKind: UiElementKind;
    abstract accept<T>(visitor: UiElementVisitor<T>): T;
    abstract deepClone(): UiElement;
    protected abstract writeElementDefinition(json: UiSchemaObject): void;
    get rule(): UiRule | undefined;
    set rule(value: UiRule | undefined);
    get i18n(): string | undefined;
    set i18n(value: string | undefined);
    get options(): Readonly<Record<string, unknown>>;
    setOption(key: string, value: unknown): this;
    toJSON(): UiSchemaObject;
    clone(): UiElement;
    get elementType(): UiElementKind;
    getCustomAttribute<T = unknown>(name: string): T | undefined;
    setCustomAttribute(name: string, value: unknown): void;
    protected cloneAttributes(): UiCustomAttributeCollection;
    protected applyCustomAttributes(json: UiSchemaObject): void;
    protected applyRuleFrom(json: UiSchemaObject): void;
    protected applyOptionsFrom(json: UiSchemaObject): void;
    protected applyI18nFrom(json: UiSchemaObject): void;
    protected writeRuleTo(json: UiSchemaObject): void;
    protected writeOptionsTo(json: UiSchemaObject): void;
    protected writeI18nTo(json: UiSchemaObject): void;
    protected copyElementStateTo(target: UiElement): void;
}
export declare abstract class UiLayout extends UiElement {
    protected readonly childElements: UiElement[];
    get elements(): readonly UiElement[];
    protected validateChild(_child: UiElement): void;
    addChild(element: UiElement): this;
    getChild(index: number): UiElement | undefined;
    setChild(index: number, element: UiElement): this;
    removeChild(index: number): this;
    insertChild(index: number, element: UiElement): this;
    moveChild(fromIndex: number, toIndex: number): this;
    protected applyLayoutMetadataFrom(json: UiSchemaObject, factory: UiSchemaFactory): void;
    protected cloneChildrenTo(target: UiLayout): void;
    protected writeChildElements(json: UiSchemaObject): void;
    protected readChildElements(json: UiSchemaObject, factory: UiSchemaFactory): void;
}
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