import { TrackController } from './track';
import { Data2d } from './data-2d';
export declare type ScrollbarOptions = {
    damping: number;
    thumbMinSize: number;
    renderByPixels: boolean;
    alwaysShowTracks: boolean;
    continuousScrolling: boolean;
    delegateTo: EventTarget | null;
    wheelEventTarget: EventTarget | null;
    plugins: any;
};
export declare type Metrics = {
    width: number;
    height: number;
};
export declare type ScrollbarSize = {
    container: Metrics;
    content: Metrics;
};
export declare type ScrollbarBounding = {
    top: number;
    right: number;
    bottom: number;
    left: number;
};
export declare type ScrollStatus = {
    offset: Data2d;
    limit: Data2d;
};
export interface ScrollListener {
    (this: Scrollbar, status: ScrollStatus): void;
}
export declare type ScrollToOptions = {
    callback: (this: Scrollbar) => void;
    easing: (percent: number) => number;
};
export declare type SetPositionOptions = {
    withoutCallbacks: boolean;
};
export declare type ScrollIntoViewOptions = {
    alignToTop: boolean;
    onlyScrollIfNeeded: boolean;
    offsetTop: number;
    offsetLeft: number;
    offsetBottom: number;
};
export interface AddTransformableMomentumCallback {
    (this: Scrollbar, willScroll: boolean): void;
}
export interface Scrollbar {
    readonly parent: Scrollbar | null;
    readonly containerEl: HTMLElement;
    readonly contentEl: HTMLElement;
    readonly track: TrackController;
    readonly options: ScrollbarOptions;
    bounding: ScrollbarBounding;
    size: ScrollbarSize;
    offset: Data2d;
    limit: Data2d;
    scrollTop: number;
    scrollLeft: number;
    destroy(): void;
    update(): void;
    getSize(): ScrollbarSize;
    isVisible(elem: HTMLElement): boolean;
    addListener(fn: ScrollListener): void;
    removeListener(fn: ScrollListener): void;
    addTransformableMomentum(x: number, y: number, fromEvent: Event, callback?: AddTransformableMomentumCallback): void;
    addMomentum(x: number, y: number): void;
    setMomentum(x: number, y: number): void;
    scrollTo(x?: number, y?: number, duration?: number, options?: Partial<ScrollToOptions>): void;
    setPosition(x?: number, y?: number, options?: Partial<SetPositionOptions>): void;
    scrollIntoView(elem: HTMLElement, options?: Partial<ScrollIntoViewOptions>): void;
    updatePluginOptions(pluginName: string, options?: any): void;
}