import type { AgPageLayoutState } from '../../api/state/agPageLayoutState';
import { BeanStub } from '../core/beanStub';
import type { StateProvider } from '../interfaces/stateProvider';
export declare class PageLayoutService extends BeanStub implements StateProvider<Partial<AgPageLayoutState>> {
    beanName: "pageLayoutSvc";
    private readonly defaultLayout;
    private layout;
    postConstruct(): void;
    setState(state?: Partial<AgPageLayoutState>): undefined;
    getState(): Partial<AgPageLayoutState> | undefined;
    set<Key extends keyof AgPageLayoutState>(key: Key, value: AgPageLayoutState[Key]): void;
    get<Key extends keyof AgPageLayoutState>(key: Key): AgPageLayoutState[Key];
    /** Number of row tracks visible in the canvas viewport. */
    getViewportRows(): number;
}