/// <reference types="react" />
import * as React from 'react';
import { BaseComponent } from '../../Utilities';
import { IScrollablePane, IScrollablePaneProps } from './ScrollablePane.types';
import { Sticky } from '../../Sticky';
export interface IScrollablePaneContext {
    scrollablePane?: {
        subscribe: (handler: (container: HTMLElement, stickyContainer: HTMLElement) => void) => void;
        unsubscribe: (handler: (container: HTMLElement, stickyContainer: HTMLElement) => void) => void;
        addSticky: (sticky: Sticky) => void;
        removeSticky: (sticky: Sticky) => void;
        updateStickyRefHeights: () => void;
        sortSticky: (sticky: Sticky) => void;
        notifySubscribers: (sort?: boolean) => void;
    };
}
export interface IScrollablePaneState {
    stickyTopHeight: number;
    stickyBottomHeight: number;
    scrollbarWidth: number | undefined;
    scrollbarHeight: number | undefined;
}
export declare class ScrollablePaneBase extends BaseComponent<IScrollablePaneProps, IScrollablePaneState> implements IScrollablePane {
    static childContextTypes: React.ValidationMap<IScrollablePaneContext>;
    private _root;
    private _stickyAboveRef;
    private _stickyBelowRef;
    private _contentContainer;
    private _subscribers;
    private _stickies;
    private _mutationObserver;
    private _notifyThrottled;
    constructor(props: IScrollablePaneProps);
    readonly root: HTMLDivElement | null;
    readonly stickyAbove: HTMLDivElement | null;
    readonly stickyBelow: HTMLDivElement | null;
    readonly contentContainer: HTMLDivElement | null;
    getChildContext(): IScrollablePaneContext;
    componentDidMount(): void;
    componentWillUnmount(): void;
    shouldComponentUpdate(nextProps: IScrollablePaneProps, nextState: IScrollablePaneState): boolean;
    componentDidUpdate(prevProps: IScrollablePaneProps, prevState: IScrollablePaneState): void;
    render(): JSX.Element;
    setStickiesDistanceFromTop(): void;
    forceLayoutUpdate(): void;
    subscribe: (handler: Function) => void;
    unsubscribe: (handler: Function) => void;
    addSticky: (sticky: Sticky) => void;
    removeSticky: (sticky: Sticky) => void;
    sortSticky: (sticky: Sticky) => void;
    updateStickyRefHeights: () => void;
    notifySubscribers: () => void;
    getScrollPosition: () => number;
    private _checkStickyStatus(sticky);
    private _addToStickyContainer;
    private _removeStickyFromContainers;
    private _onWindowResize;
    private _getStickyContainerStyle;
    private _getScrollbarWidth();
    private _getScrollbarHeight();
    private _onScroll;
}