import { LiveEditor } from '../../editor';
import { LiveTemplate } from '../../template';
export declare abstract class BasePart {
    /**
     * Signal for the editor to re-render.
     */
    render(): void;
}
export interface UiPartComponent {
    render: () => void;
    template: LiveTemplate;
}
export interface UiPartConfig {
    /**
     * Editor.
     */
    editor: LiveEditor;
}
export interface UiPartConstructor {
    new (config: any): UiPartComponent;
}
declare type LazyUiPartInfo = {
    cls: UiPartConstructor;
    config: UiPartConfig;
};
/**
 * Lazy UI parts
 *
 * To save load time and un-used UI components the creation of the
 * parts can be delayed until they are needed.
 *
 * A part is registered with the configuration needed to create the
 * part. The first time that the part is requested the singleton
 * is requested for the part.
 */
export declare class LazyUiParts {
    parts: Record<string, UiPartComponent>;
    registry: Record<string, LazyUiPartInfo>;
    constructor();
    /**
     * Lazily get a part component.
     *
     * @param part Part name
     * @returns Part component singleton
     */
    get(part: string): UiPartComponent;
    /**
     * Determine if the part has already been instantiated.
     */
    has(part: string): boolean;
    register(part: string, cls: UiPartConstructor, config: UiPartConfig): void;
}
export {};