703 lines
22 KiB
JavaScript
703 lines
22 KiB
JavaScript
"use strict";
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/**
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* @Name: 基于layui的异步无限级联选择器
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* @Author: 前端喵
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* 创建时间: 2019/05/23
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* 使用说明: 在主文件里面使用layui.config设置，具体方法看index.html
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*/
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/**
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* 参数说明：
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* width（可选） :input框宽度
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* height（可选）：input框高度
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*/
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layui.define(["jquery"], function (exports) {
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var $ = layui.jquery;
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// 私有方法，禁止外面调用的方法
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function Private() {
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//页面初始化默认值
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this.param = {
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width: 220,
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height: 40,
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prop: {
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value: "value",
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label: "label",
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children: 'children'
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},
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clicklast: false,
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time: 250,
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placeholder: "请选择",
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search: {
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show: false,
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minLabel: 10,
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placeholder: '请输入搜索词'
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}
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},
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// 定义全局状态仓库
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this.store = {
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showCascader: false,
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cascaderDom: null, // 当前elem对象
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cascaderAll: null, // 生成的Dom主对象
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input: null, // input框dom
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inputI: null, // input框箭头dom
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model: null, // 下拉菜单的主dom
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li: null, // li标签
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parentNextAll: null, // 当前操作的li标签元素后面所有ul集合
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brother: null, // li标签同级dom集合
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data: [], // 所有从后端异步请求的数据集合
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chooseData: [], // 已选中的数据集
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zIndex: 2000 // 显示顺序
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};
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}
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// 页面初始化
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Private.prototype.init = function (options) {
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var _this2 = this;
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var store = this.store;
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var param = this.param;
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// dom变量初始化
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store.cascaderDom = $(options.elem);
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// 把用户的参数值进行存储
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// 开始存储
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for (var _i in options) {
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if (options[_i].length !== 0) {
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if (_i == "prop" | _i == 'search') {
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for (var x in options[_i]) {
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param[_i][x] = options[_i][x];
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}
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} else {
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param[_i] = options[_i];
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}
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}
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}
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delete param.data;
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if (options.data) {
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store.data = options.data;
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}
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param.device = this.checkDevice();
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// 存储结束
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if (store.cascaderDom.next().hasClass('cascader-all')) {
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store.cascaderDom.next().remove();
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}
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param.className = 'cascader-' + this.param.elem.replace('#', '');
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var phoneName = '';
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if (param.device === 1) {
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phoneName = 'cascader-model-phone';
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}
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// 渲染主dom
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if (typeof this.param.width == "string" &&( this.param.width == "auto" || this.param.width.indexOf("%") > 0)) {
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this.param.width = this.param.width;
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} else {
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this.param.width = this.param.width + " px";
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}
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store.cascaderDom.after("\n\t\t\t<div class=\"cascader-all " + param.className + "\" style=\"width:" + this.param.width + ";\">\n\t\t\t\t<input type=\"text\" class=\"layui-input cascader-input\" placeholder=\"" + param.placeholder + "\" readonly style=\"width:" + this.param.width + ";height:" + this.param.height + "px;\">\n\t\t\t\t<i class=\"layui-icon layui-icon-down cascader-i\" style=\"top:" + this.param.height / 2 + "px;\"></i>\n\t\t\t\t<div class=\"cascader-model " + phoneName + "\" style=\"z-index:" + this.store.zIndex + ";display:flex;\">\n\t\t\t\t</div>\n\t\t\t</div>\n \t\t");
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// 判断elem是否存在以及是否正确，elem必填
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if (!options.elem || options.elem == "") {
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layer.msg('请配置有效的elem值 ');
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} else if ($(options.elem).length == 0) {
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layer.msg('请配置有效的elem值 ');
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}
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store.input = store.cascaderDom.nextAll().find('.cascader-input');
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store.inputI = store.input.next();
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store.cascaderAll = $(store.cascaderDom.nextAll()[0]);
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store.model = store.cascaderDom.nextAll().find('.cascader-model');
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store.li = store.model.find('li');
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// 全局状态初始化
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store.model.hide();
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if (store.data.length == 0) {
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param.getChildren(param.value, function (data) {
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store.data = data;
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_this2.liHtml(store.data);
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if (param.checkData) {
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if (param.checkData.length > 0) {
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_this2.dataToshow(param.checkData);
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}
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}
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});
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} else {
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this.liHtml(store.data);
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if (param.checkData) {
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if (param.checkData.length > 0) {
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this.dataToshow(param.checkData);
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}
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}
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}
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// 先进入是否禁用判断事件
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// 不禁用则执行下面的事件
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this.disabled().then(function (res) {
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_this2.inputClick(options);
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_this2.liClick();
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_this2.liHover();
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_this2.modelHandle();
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if (param.search.show) {
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_this2.handleSearch();
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}
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});
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};
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// 判断是否禁用
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Private.prototype.disabled = function () {
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var disabled = this.param.disabled;
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var cascaderAll = this.store.cascaderAll;
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var input = this.store.input;
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return new Promise(function (resolve, reject) {
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if (disabled) {
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cascaderAll.addClass('cascader-disabled');
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} else {
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resolve();
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}
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});
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};
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// li标签赋值方法
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// key为string类型
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Private.prototype.liHtml = function (data, key, choose) {
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var lis = [];
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var param = this.param;
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var store = this.store;
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var position = [];
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var key1 = '';
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if (!key || key.length == 0) {
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key = "";
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} else {
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key = key.join('-');
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key1 = key;
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key = key + "-";
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}
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if (data !== "") {
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for (var _i2 in data) {
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var li = '<li value="' + data[_i2][param.prop.value] + '" key="' + key + _i2 + '"';
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if (_i2 == choose) {
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li = li + ' class="cascader-choose-active"';
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position = [_i2, data.length];
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}
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// 来自于陈诗樵的BUG修复,github地址:https://github.com/alasq
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// data[i].children 改为 data[i][param.prop.children]
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if (data[_i2].hasChild == true || data[_i2][param.prop.children]) {
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li = li + '>' + data[_i2][param.prop.label] + '<i class="layui-icon layui-icon-right"></i></li>';
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} else {
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li = li + '>' + data[_i2][param.prop.label] + '</li>';
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}
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lis.push(li);
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}
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}
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lis = lis.join('');
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if (data && data.length > 0) {
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if (param.search.show && data.length > param.search.minLabel) {
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lis = '<input class="layui-input cascader-model-input" key="' + key1 + '" placeholder="' + param.search.placeholder + '">' + lis;
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}
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} else {
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lis = '<p class="nodata">暂无数据</p>';
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console.log('数据为空，无法进行渲染');
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}
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var ul = $("\n\t\t\t<ul class=\"cascader-ul\">" + lis + "</ul>\n\t\t");
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ul.fadeIn('fast');
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store.model.append(ul);
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this.liPosition(position);
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this.ModelPosition();
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};
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// 当前选中的跳转位置
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Private.prototype.liPosition = function (position) {
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var model = this.store.model.find('ul').last();
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};
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Private.prototype.handleSearch = function () {
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var model = this.store.model;
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var prop = this.param.prop;
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var _this = this;
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var value = '';
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var flag = true;
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model.on('compositionstart', function () {
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flag = false;
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});
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model.on('compositionend', function () {
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flag = true;
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});
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model.on('input', 'input', function () {
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var _this3 = this;
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setTimeout(function () {
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if (flag) {
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var data = _this.store.data;
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if (value == _this3.value) {
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return;
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}
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value = _this3.value;
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var key = $(_this3).attr('key').split('-');
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var key1 = $(_this3).attr('key') + '-';
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if ($(_this3).attr('key')) {
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for (i in key) {
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if (data[key[i]][prop.children]) {
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data = data[key[i]][prop.children];
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}
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}
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}
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var renderData = [];
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var lis = '';
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for (i in data) {
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if (data[i][prop.label].indexOf(value) > -1) {
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if (data[i][prop.children] | data[i].hasChild) {
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lis += '<li value="' + data[i][prop.value] + '" key="' + key1 + i + '">' + data[i][prop.label] + '<i class="layui-icon layui-icon-right"></i></li>';
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} else {
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lis += '<li value="' + data[i][prop.value] + '" key="' + key1 + i + '">' + data[i][prop.label] + '</li>';
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}
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renderData.push(data[i]);
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}
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}
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$(_this3.parentNode).find('li').remove();
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$(_this3.parentNode).append(lis);
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}
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}, 0);
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});
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};
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Private.prototype.modelHandle = function () {
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var _this4 = this;
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$(window).resize(function () {
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//当浏览器大小变化时
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var model = _this4.store.model;
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_this4.ModelPosition();
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});
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};
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var modelWidth = 0;
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Private.prototype.ModelPosition = function () {
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var model = this.store.model;
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var input = this.store.input;
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var BodyWidth = document.documentElement.clientWidth;
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var positionLeft = 0,
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left = 0;
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if (window.getComputedStyle(model[0]).width !== "auto") {
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modelWidth = window.getComputedStyle(model[0]).width.replace('px', '');
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}
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left = input.offset().left - model.position().left;
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if (BodyWidth < modelWidth) {
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positionLeft = BodyWidth - modelWidth;
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}
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if (positionLeft < 0) {
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model.css("left", positionLeft - 30);
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} else {
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model.css('left', 0);
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}
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};
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// 鼠标hover监听事件[li标签]
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Private.prototype.liHover = function () {
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var store = this.store;
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var param = this.param;
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var _this = this;
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store.model.on('mouseenter', 'li', function () {
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var _this5 = this;
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store.parentNextAll = $(this).parent("ul").nextAll();
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store.brother = $(this).siblings();
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if ($(this).find('i').length == 0) {
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store.parentNextAll.fadeOut('fast', function () {
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store.parentNextAll.remove();
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});
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} else {
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(function () {
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// 增加data的树结点
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var DataTreeAdd = function DataTreeAdd(data, newData, keys) {
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var array = data;
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for (var k in keys) {
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if (k < keys.length - 1) {
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array = array[keys[k]][param.prop.children];
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} else {
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array = array[keys[k]];
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}
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}
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array.children = newData;
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};
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var DataTreeChange = function DataTreeChange(data, keys) {
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var array = data;
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for (var k in keys) {
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if (k < keys.length - 1) {
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array = array[keys[k]][param.prop.children];
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} else {
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array = array[keys[k]];
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}
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}
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array.hasChild = false;
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};
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var keys = $(_this5).attr('key');
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var value = $(_this5).attr('value');
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var data = _this.store.data;
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var childrenName = _this.param.prop.children;
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keys = keys.split('-');
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var goodData = data;
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for (var _i3 in keys) {
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var key = keys[_i3];
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if (goodData) {
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if (goodData[key]) {
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goodData = goodData[key][childrenName];
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}
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}
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}
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if (!goodData) {
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param.getChildren(value, function (datax) {
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goodData = datax;
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var children = data;
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if (goodData && goodData.length != 0) {
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for (var _i4 in keys) {
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if (_i4 == keys.length - 1) {
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children = goodData;
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} else {
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if (!children[keys[_i4]][childrenName]) {
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children[keys[_i4]][childrenName] = new Array();
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}
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children = children[keys[_i4]][childrenName];
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}
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}
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DataTreeAdd(data, goodData, keys);
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store.parentNextAll = $(_this5).parent("ul").nextAll();
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store.parentNextAll.remove();
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_this.liHtml(goodData, keys);
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} else {
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$(_this5).find('i').remove();
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store.parentNextAll.remove();
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DataTreeChange(data, keys);
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}
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});
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} else {
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store.parentNextAll.remove();
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_this.liHtml(goodData, keys);
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}
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})();
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}
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$(this).addClass('cascader-choose-active');
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store.brother.removeClass('cascader-choose-active');
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store.parentNextAll.children().removeClass('cascader-choose-active');
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// 获取所有的已选中的数据，并回显至input选择框中
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// _this.getChooseData();
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});
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};
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// 鼠标点击监听事件[li标签]
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Private.prototype.liClick = function () {
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var _this = this;
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var store = this.store;
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var param = this.param;
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var className = param.className;
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// store.model为一个自定义dom对象
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if (param.clicklast == false) {
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store.model.on('click', 'li', function () {
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_this.getChooseData();
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store.showCascader = !store.showCascader;
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if (param.device === 1) {} else {
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store.model.slideUp(_this.param.time);
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}
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store.inputI.removeClass('rotate');
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});
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} else {
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store.model.on('click', 'li', function () {
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store.parentNextAll = $(this).parent("ul").nextAll();
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if (store.parentNextAll.length == 0) {
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_this.getChooseData();
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store.showCascader = !store.showCascader;
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if (param.device === 1) {} else {
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store.model.slideUp(_this.param.time);
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}
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store.inputI.removeClass('rotate');
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_this.getThisData();
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}
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});
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}
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};
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// 判断当前访问客户端是PC还是移动端
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// PC端返回1，移动端返回0
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Private.prototype.checkDevice = function () {
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if (/Android|webOS|iPhone|iPod|BlackBerry/i.test(navigator.userAgent)) {
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return 1;
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} else {
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return 0;
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}
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};
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// 获取当前层级数据
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Private.prototype.getThisData = function () {
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var value = this.param.prop.value,
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children = this.param.prop.children,
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chooseData = this.store.chooseData,
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data = this.store.data,
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currentData = [];
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for (var _i5 in chooseData) {
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for (var x in data) {
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if (chooseData[_i5] == data[x][value]) {
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if (Number(_i5) === chooseData.length - 1) {
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currentData = JSON.parse(JSON.stringify(data[x]));
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break;
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}
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if (data[x][children]) {
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data = data[x][children];
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} else {
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data = data[x];
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}
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break;
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}
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}
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}
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return currentData;
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};
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// 鼠标监听事件[input控件]
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Private.prototype.inputClick = function (options) {
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var store = this.store;
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var param = this.param;
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var _this = this;
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$(document).click(function (e) {
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var className = e.target.className;
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className = className.split(" ");
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var other = ['cascader-input', 'cascader-model', "cascader-choose-active", "layui-icon-right", "cascader-ul", "cascader-model-input"];
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for (var _i6 in className) {
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for (var x in other) {
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if (className[_i6] == other[x]) {
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return;
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}
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}
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}
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store.showCascader = false;
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store.model.slideUp(_this.param.time);
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store.inputI.removeClass('rotate');
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});
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store.input.click(function () {
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store.showCascader = !store.showCascader;
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if (store.showCascader == true) {
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store.inputI.addClass('rotate');
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var chooseData = _this.store.chooseData;
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var data = _this.store.data;
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if (chooseData.length !== 0) {
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var key = [];
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_this.clearModel();
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for (var _i7 in chooseData) {
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for (var x in data) {
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if (data[x][param.prop.value] == chooseData[_i7]) {
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_this.liHtml(data, key, x);
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key.unshift(x);
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data = data[x][param.prop.children];
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break;
|
||
}
|
||
}
|
||
}
|
||
}
|
||
store.model.slideDown(_this.param.time);
|
||
_this.ModelPosition();
|
||
} else {
|
||
store.model.slideUp(_this.param.time);
|
||
store.inputI.removeClass('rotate');
|
||
}
|
||
});
|
||
};
|
||
|
||
// 获取页面中选中的数据
|
||
Private.prototype.getChooseData = function () {
|
||
var store = this.store;
|
||
var chooseDom = store.model.find('li.cascader-choose-active');
|
||
var chooseData = [];
|
||
var chooseLabel = [];
|
||
for (var _i8 in chooseDom) {
|
||
if (chooseDom[_i8].innerText) {
|
||
chooseData.push($(chooseDom[_i8]).attr('value'));
|
||
chooseLabel.push(chooseDom[_i8].innerText);
|
||
} else {
|
||
break;
|
||
}
|
||
}
|
||
this.store.chooseData = chooseData;
|
||
this.inputValueChange(chooseLabel);
|
||
};
|
||
Private.prototype.inputValueChange = function (label) {
|
||
var store = this.store;
|
||
var param = this.param;
|
||
if (param.showlast == true) {
|
||
label = label[label.length - 1];
|
||
} else {
|
||
label = label.join('/');
|
||
}
|
||
store.input.val(label);
|
||
var fontWidth = store.input.css('font-size').replace('px', ''),
|
||
inputWidth = store.input.width(),
|
||
labelWidth = label.length;
|
||
var maxLabelWidth = Math.floor(inputWidth / fontWidth);
|
||
if (labelWidth > maxLabelWidth) {
|
||
store.input.attr('title', label);
|
||
} else {
|
||
store.input.attr('title', "");
|
||
}
|
||
};
|
||
// 数据回显
|
||
Private.prototype.dataToshow = function (checkData) {
|
||
var _this6 = this;
|
||
|
||
var param = this.param;
|
||
var store = this.store;
|
||
var backData = []; //后端数据集合
|
||
var chooseLabel = []; //选中的项对应的label值
|
||
var keys = []; //checkData在数据源中的位置大全
|
||
backData[0] = store.data;
|
||
var flag = 1;
|
||
if (param.getChildren) {
|
||
if (checkData.length === 1) {
|
||
for (var _i9 in store.data) {
|
||
if (store.data[_i9][param.prop.value] == checkData[0]) {
|
||
var label = store.data[_i9][param.prop.label].split(',');
|
||
this.inputValueChange(label);
|
||
return;
|
||
}
|
||
}
|
||
}
|
||
|
||
var _loop = function _loop(_i10) {
|
||
if (_i10 < checkData.length) {
|
||
param.getChildren(checkData[_i10 - 1], function (data) {
|
||
backData[_i10] = data;
|
||
flag++;
|
||
if (flag == checkData.length) {
|
||
for (var _i11 = checkData.length - 1; _i11 >= 0; _i11--) {
|
||
for (var x in backData[_i11]) {
|
||
if (checkData[_i11] == backData[_i11][x][param.prop.value]) {
|
||
keys.unshift(x);
|
||
chooseLabel.unshift(backData[_i11][x][param.prop.label]);
|
||
if (_i11 < checkData.length - 1) {
|
||
backData[_i11][x][param.prop.children] = backData[_i11 + 1];
|
||
}
|
||
}
|
||
}
|
||
}
|
||
store.data = backData[0];
|
||
|
||
// input框数据回显
|
||
_this6.inputValueChange(chooseLabel);
|
||
_this6.clearModel();
|
||
// 选择器数据回显
|
||
var key = [];
|
||
for (var _i12 in backData) {
|
||
if (_i12 !== "0") {
|
||
key.push(keys[_i12 - 1]);
|
||
}
|
||
_this6.liHtml(backData[_i12], key, keys[_i12]);
|
||
}
|
||
}
|
||
});
|
||
}
|
||
};
|
||
|
||
for (var _i10 = 1; _i10 < checkData.length; _i10++) {
|
||
_loop(_i10);
|
||
}
|
||
} else {
|
||
var storeData = store.data;
|
||
for (var x in checkData) {
|
||
for (var _i13 in storeData) {
|
||
if (storeData[_i13][param.prop.value] == checkData[x]) {
|
||
chooseLabel.push(storeData[_i13][param.prop.label]);
|
||
keys.push(_i13);
|
||
storeData = storeData[_i13][param.prop.children];
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
// input框数据回显
|
||
this.inputValueChange(chooseLabel);
|
||
this.store.chooseData = checkData;
|
||
}
|
||
};
|
||
// 清空ul标签
|
||
Private.prototype.clearModel = function () {
|
||
var store = this.store;
|
||
store.model.html('');
|
||
};
|
||
// 监听下拉菜单的位置
|
||
Private.prototype.handlePosition = function () {
|
||
// 当前屏幕大小
|
||
// let bodyWidth =
|
||
};
|
||
|
||
var privates = new Array();
|
||
var dom_num = 0;
|
||
// 暴露给外界使用的方法
|
||
var cascader = {
|
||
|
||
// 页面初始化
|
||
load: function load(options) {
|
||
var current = null;
|
||
for (var _i14 in privates) {
|
||
if (privates[_i14].elem === options.elem) {
|
||
current = _i14;
|
||
}
|
||
}
|
||
if (!current) {
|
||
current = dom_num;
|
||
dom_num++;
|
||
privates[current] = new Array();
|
||
privates[current].obj = new Private();
|
||
}
|
||
privates[current].elem = options.elem;
|
||
privates[current].obj.store.zIndex -= current;
|
||
privates[current].obj.store.data = [];
|
||
if (options.chooseData) {
|
||
privates[current].obj.store.chooseData = options.chooseData;
|
||
} else {
|
||
privates[current].obj.store.chooseData = [];
|
||
}
|
||
privates[current].obj.init(options);
|
||
},
|
||
|
||
// 获取页面中选中的数据，数组形式
|
||
getChooseData: function getChooseData(elem) {
|
||
var obj = this.elemCheck(elem);
|
||
return obj.store.chooseData;
|
||
},
|
||
|
||
// 监听方法
|
||
on: function on(type, elem, callback) {
|
||
var obj = this.elemCheck(elem);
|
||
var className = obj.param.className;
|
||
if (type == "click") {
|
||
$(document).on('click', '.' + className + ' li', function () {
|
||
setTimeout(function () {
|
||
var data = obj.getThisData();
|
||
if (obj.param.clicklast === false) {
|
||
callback(data);
|
||
} else {
|
||
if (obj.store.parentNextAll.length == 0) {
|
||
callback(data);
|
||
}
|
||
}
|
||
}, 50);
|
||
});
|
||
} else if (type == "hover") {
|
||
obj.store.model.on('mouseenter', 'li', function () {
|
||
callback();
|
||
});
|
||
}
|
||
},
|
||
|
||
// elem位置判断，禁止外界调用，因为你调也没啥卵用
|
||
elemCheck: function elemCheck(elem) {
|
||
if (!elem) {
|
||
return privates[0].obj;
|
||
}
|
||
for (var _i15 in privates) {
|
||
if (privates[_i15].elem == elem) {
|
||
return privates[_i15].obj;
|
||
}
|
||
}
|
||
}
|
||
};
|
||
//layui.link(layui.cache.base + 'ajaxCascader.css');
|
||
layui.link('/js/ajaxCascader/ajaxCascader.css');
|
||
exports('ajaxCascader', cascader);
|
||
}); |