import { Observable } from 'rxjs';
import { ScrollViewport } from './scroll-viewport';
import { ScrollbarManager } from './utils/scrollbar-manager';
import { ScrollbarPointerEventsMethod } from './ng-scrollbar.model';
import { SmoothScrollToOptions } from './smooth-scroll';
import * as i0 from "@angular/core";
export declare abstract class NgScrollbarBase {
    abstract manager: ScrollbarManager;
    abstract viewport: ScrollViewport;
    abstract trackClass: string;
    abstract thumbClass: string;
    abstract minThumbSize: number;
    abstract viewportPropagateMouseMove: boolean;
    abstract trackClickScrollDuration: number;
    abstract pointerEventsMethod: ScrollbarPointerEventsMethod;
    abstract pointerEventsDisabled: boolean;
    abstract updated: Observable<void>;
    abstract scrolled: Observable<Event>;
    abstract setHovered(hovered: ScrollbarHovered): any;
    abstract setDragging(hovered: ScrollbarDragging): any;
    abstract setClicked(scrollbarClicked: boolean): any;
    abstract scrollTo(options: SmoothScrollToOptions): Promise<void>;
    static ɵfac: i0.ɵɵFactoryDeclaration<NgScrollbarBase, never>;
    static ɵdir: i0.ɵɵDirectiveDeclaration<NgScrollbarBase, never, never, {}, {}, never, never, false, never>;
}
export interface ScrollbarDragging {
    verticalDragging?: boolean;
    horizontalDragging?: boolean;
}
export interface ScrollbarHovered {
    verticalHovered?: boolean;
    horizontalHovered?: boolean;
}