import { FocusGroup, LoopBehavior } from "./FocusGroup";
export declare const focusGroupAttributeName = "focus-group";
export declare const focusOrderAttributeName = "focus-order";
export declare const autofocusAttributeName = "autofocus";
export declare const focusableTagNames: string[];
export declare const autofocusInspectAttributeValue = "observe";
export declare class FocusManager {
    private _enabled;
    private _root;
    readonly root: FocusGroup;
    readonly enabled: boolean;
    addCustomSelector(selector: string): void;
    removeCustomSelector(selector: string): void;
    setCanElementGetFocusHandler(handler: (element: HTMLElement) => boolean): void;
    focusNext(currentElement?: HTMLElement): void;
    focusPrior(currentElement?: HTMLElement): void;
    disable(): void;
    enable(rootElement?: HTMLElement, headBehavior?: LoopBehavior, tailBehavior?: LoopBehavior): void;
}
export declare const focusManager: FocusManager;