export interface SchedulerParams {
    /**
     * 数据总量
     */
    dataCount: number;
    /**
     * 数据位置索引
     *
     * @default 0
     */
    defaultDataIndex?: number;
    /**
     * 容器最小数量
     * @default 3
     */
    minCount?: number;
    /**
     * 是否循环
     * @default false
     */
    loop?: boolean;
    onRestart?: (detail: {
        containerIndex: number;
        dataIndex: number;
    }) => void;
    onContainerIndexChange?: (detail: {
        containerIndex: number;
        dataIndex: number;
    }) => void;
    onDataIndexChange?: (detail: {
        containerIndex: number;
        dataIndex: number;
    }) => void;
    onRecompute?: () => void;
}
declare class Scheduler {
    group: number[];
    loop: boolean;
    indexMapping: Map<number, number>;
    private dataIndex;
    private containerIndex;
    private dataCount;
    private minCount;
    private onContainerIndexChange;
    private onDataIndexChange;
    private onRecompute;
    private onRestart;
    constructor({ dataCount, defaultDataIndex, minCount, loop, onDataIndexChange, onRecompute, onRestart, onContainerIndexChange }: SchedulerParams);
    get maxDataIndex(): number;
    get groupSize(): number;
    get maxContainerIndex(): number;
    private get minMiddleCount();
    /**
     * 更新数据总量
     * @param count 总量值
     */
    updateCount(count: number): void;
    /**
     * 更新当前数据索引
     * @param index 当前索引值
     */
    updateIndex(index: number): Promise<number>;
    recomputeIndexArr(): number[];
    computeContainerIndex(step?: number): number;
    setContainerIndex(index: number): number;
    getStepOffset(targetIndex: number): number;
    getSafeDataIndex(dataIndex: number): number;
    getDataIndexByStep(): void;
    getDataIndex(): number;
    getContainerIndex(): number;
    getDataIndexByContainerIndex(index: number): number;
    /**
     * 非 `loop` 模式时， 特殊处理第一组数据
     * @private
     */
    private getFirstGroupIndexMapping;
    /**
     * 非 `loop` 模式时， 特殊处理最后一组数据
     * @returns
     */
    private getLastGroupIndexMapping;
    private get isFirstGroup();
    private get isLastGroup();
    private getIndexMapping;
    private computeGroup;
    private setGroup;
}
export default Scheduler;