import { SequenceController } from './sequence-controller';
export declare class ItemManager {
    private controller;
    items: HTMLElement[];
    activeItem?: HTMLElement;
    activeIndex?: number;
    isActive: boolean;
    constructor(controller: SequenceController);
    initialize(): this;
    loadItemsFromConfig(): this;
    filterItems(): this;
    private filterActiveItems;
    itemIsValid(item: HTMLElement): boolean;
    getItemFromId(id: string): HTMLElement | false;
}