import { WrapperGS } from "../WrapperGS";
export interface LayoutGS extends WrapperGS {
    readonly pageContainer: WrapperGS;
    reset(): void | Promise<void>;
}
export interface LayoutConstructorGS<TLayout extends LayoutGS = LayoutGS> {
    new (existingElement?: HTMLElement): TLayout;
    readonly LayoutName: string;
}
/** Application-level layout registry shared by browser and server GUI implementations. */
export declare class GuiCtrlGS {
    private readonly _layouts;
    registerLayout(constructor: LayoutConstructorGS): void;
}
/** Browser GUI controller owns one reusable instance of every registered layout. */
export declare class GuiBrowserGS extends GuiCtrlGS {
    private readonly _root;
    private readonly _instances;
    private _currentLayout?;
    private _currentPage?;
    constructor(_root: HTMLElement);
    getLayout(name: string): LayoutGS;
    get currentLayout(): LayoutGS | undefined;
    get currentPage(): WrapperGS | undefined;
    private static validateLayout;
}