import { BehaviorSubject, Observable, Subject } from 'rxjs';
import { Context } from '../../context/Context';
import { HookManager } from '../../hooks/HookManager';
import { ReaderSettingsManager } from '../../settings/ReaderSettingsManager';
import { Spine } from '../../spine/Spine';
import { SpinePosition, UnboundSpinePosition } from '../../spine/types';
import { AbstractPosition } from '../../types';
import { ReactiveEntity } from '../../utils/ReactiveEntity';
import { Viewport } from '../../viewport/Viewport';
import { NavigationModeController, NavigationModeControllerNavigationEntry } from '../types';
import { RelativeViewport } from '../../viewport/types';
export declare class ScrollPosition extends AbstractPosition {
}
export declare class UnboundScrollPosition extends AbstractPosition {
    readonly __symbol: symbol;
}
export type ScrollNavigationEntry = NavigationModeControllerNavigationEntry;
export declare class ScrollNavigationController extends ReactiveEntity<{
    element: HTMLElement | undefined;
}> implements NavigationModeController {
    protected viewport: Viewport;
    protected settings: ReaderSettingsManager;
    protected hookManager: HookManager;
    protected spine: Spine;
    protected context: Context;
    protected navigateSubject: Subject<NavigationModeControllerNavigationEntry>;
    protected scrollingSubject: BehaviorSubject<boolean>;
    isNavigating$: Observable<boolean>;
    userScroll$: Observable<Event>;
    constructor(viewport: Viewport, settings: ReaderSettingsManager, hookManager: HookManager, spine: Spine, context: Context);
    protected applyNavigationPosition: ({ position }: ScrollNavigationEntry) => void;
    update(value: Partial<{
        element: HTMLElement | undefined;
    }>): void;
    destroy(): void;
    navigate(navigation: NavigationModeControllerNavigationEntry): void;
    isActive: () => boolean;
    getNavigationVisibleArea: () => RelativeViewport;
    fromScrollPosition(position: UnboundScrollPosition | ScrollPosition): UnboundSpinePosition;
    fromSpinePosition(position: UnboundSpinePosition | SpinePosition): ScrollPosition;
    get scrollPosition(): ScrollPosition;
}