export interface ScrollbarThumb {
    readonly element: HTMLElement;
    displaySize: number;
    realSize: number;
    offset: number;
    attachTo(track: HTMLElement): void;
    update(scrollOffset: number, containerSize: number, pageSize: number): void;
}
export interface ScrollbarTrack {
    readonly element: HTMLElement;
    readonly thumb: ScrollbarThumb;
    attachTo(container: HTMLElement): void;
    show(): void;
    hide(): void;
    update(scrollOffset: number, containerSize: number, pageSize: number): void;
}
export interface TrackController {
    readonly xAxis: ScrollbarTrack;
    readonly yAxis: ScrollbarTrack;
    update(): void;
    autoHideOnIdle(): void;
}