/**
 * @license
 * Copyright 厦门乾元盛世科技有限公司 All Rights Reserved.
 *
 * Use of this source code is governed by an MIT-style license that can be
 * found in the LICENSE file.
 */
import { EventEmitter, OnInit } from '@angular/core';
import { PickerOption } from './weui.picker';
export declare class WeUIPickerGroup implements OnInit {
    /**
     * 默认参数
     */
    defaults: any;
    /**
     * 当前列表组的选项
     */
    options: PickerOption[];
    /**
     * 初始值
     */
    value: any;
    /**
     * 修改事件
     */
    change: EventEmitter<any>;
    private startTime;
    private startY;
    private endY;
    private speed;
    /**
     * 选项滚动的距离，用于设置translate3d的Y值
     */
    private distance;
    readonly translate3d: string;
    /**
     * 选项惯性滚动的时间
     */
    private duration;
    readonly transition: string;
    constructor();
    ngOnInit(): void;
    forceChange(): void;
    _start(event: TouchEvent): void;
    _move(event: TouchEvent): void;
    _end(event: TouchEvent): void;
    init(): void;
    /**
     * 当touch事件结束时，根据惯性滑动计算当前在哪个选项，以及列表滚动的最终距离
     *
     * @param diff 惯性滑动的距离
     */
    stop(diff: number): void;
    /**
     * 选择某个选项时触发
     *
     * @param option 选中的选项
     * @param index  该选项在列表中的索引
     */
    onChange(option: PickerOption, index?: number): void;
    /**
     * get max translate
     *
     * @param offset
     * @param rowHeight
     * @returns {number}
     */
    _getMax(offset: number, rowHeight: number): number;
    /**
     * get min translate
     *
     * @param offset
     * @param rowHeight
     * @param length
     * @returns {number}
     */
    _getMin(offset: number, rowHeight: number, length: number): number;
    /**
     * get index of middle item
     *
     * @param items
     * @returns {number}
     */
    _getDefaultIndex(options: any[]): number;
    _getDefaultTranslate(offset: number, rowHeight: number, options: any[]): number;
}