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403 lines
12 KiB
403 lines
12 KiB
/*!
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* jQuery cxSelect
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* @name jquery.cxselect.js
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* @version 1.4.1
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* @date 2016-11-02
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* @author ciaoca
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* @email ciaoca@gmail.com
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* @site https://github.com/ciaoca/cxSelect
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* @license Released under the MIT license
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*/
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(function(factory) {
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if (typeof define === 'function' && define.amd) {
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define(['jquery'], factory);
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} else {
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factory(window.jQuery || window.Zepto || window.$);
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};
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}(function($) {
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var cxSelect = function() {
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var self = this;
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var dom, settings, callback;
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// 分配参数
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for (var i = 0, l = arguments.length; i < l; i++) {
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if (cxSelect.isJquery(arguments[i]) || cxSelect.isZepto(arguments[i])) {
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dom = arguments[i];
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} else if (cxSelect.isElement(arguments[i])) {
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dom = $(arguments[i]);
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} else if (typeof arguments[i] === 'function') {
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callback = arguments[i];
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} else if (typeof arguments[i] === 'object') {
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settings = arguments[i];
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};
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};
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var api = new cxSelect.init(dom, settings);
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if (typeof callback === 'function') {
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callback(api);
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};
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return api;
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};
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cxSelect.isElement = function(o){
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if (o && (typeof HTMLElement === 'function' || typeof HTMLElement === 'object') && o instanceof HTMLElement) {
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return true;
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} else {
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return (o && o.nodeType && o.nodeType === 1) ? true : false;
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};
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};
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cxSelect.isJquery = function(o){
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return (o && o.length && (typeof jQuery === 'function' || typeof jQuery === 'object') && o instanceof jQuery) ? true : false;
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};
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cxSelect.isZepto = function(o){
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return (o && o.length && (typeof Zepto === 'function' || typeof Zepto === 'object') && Zepto.zepto.isZ(o)) ? true : false;
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};
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cxSelect.getIndex = function(n, required) {
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return required ? n : n - 1;
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};
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cxSelect.getData = function(data, space) {
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if (typeof space === 'string' && space.length) {
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space = space.split('.');
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for (var i = 0, l = space.length; i < l; i++) {
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data = data[space[i]];
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};
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};
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return data;
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};
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cxSelect.init = function(dom, settings) {
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var self = this;
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if (!cxSelect.isJquery(dom) && !cxSelect.isZepto(dom)) {return};
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var theSelect = {
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dom: {
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box: dom
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}
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};
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self.attach = cxSelect.attach.bind(theSelect);
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self.detach = cxSelect.detach.bind(theSelect);
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self.setOptions = cxSelect.setOptions.bind(theSelect);
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self.clear = cxSelect.clear.bind(theSelect);
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theSelect.changeEvent = function() {
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cxSelect.selectChange.call(theSelect, this.className);
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};
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theSelect.settings = $.extend({}, $.cxSelect.defaults, settings, {
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url: theSelect.dom.box.data('url'),
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emptyStyle: theSelect.dom.box.data('emptyStyle'),
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required: theSelect.dom.box.data('required'),
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firstTitle: theSelect.dom.box.data('firstTitle'),
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firstValue: theSelect.dom.box.data('firstValue'),
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jsonSpace: theSelect.dom.box.data('jsonSpace'),
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jsonName: theSelect.dom.box.data('jsonName'),
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jsonValue: theSelect.dom.box.data('jsonValue'),
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jsonSub: theSelect.dom.box.data('jsonSub')
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});
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var _dataSelects = theSelect.dom.box.data('selects');
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if (typeof _dataSelects === 'string' && _dataSelects.length) {
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theSelect.settings.selects = _dataSelects.split(',');
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};
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self.setOptions();
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self.attach();
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// 使用独立接口获取数据
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if (!theSelect.settings.url && !theSelect.settings.data) {
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cxSelect.start.apply(theSelect);
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// 设置自定义数据
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} else if ($.isArray(theSelect.settings.data)) {
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cxSelect.start.call(theSelect, theSelect.settings.data);
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// 设置 URL，通过 Ajax 获取数据
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} else if (typeof theSelect.settings.url === 'string' && theSelect.settings.url.length) {
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$.getJSON(theSelect.settings.url, function(json) {
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cxSelect.start.call(theSelect, json);
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});
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};
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};
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// 设置参数
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cxSelect.setOptions = function(opts) {
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var self = this;
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if (opts) {
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$.extend(self.settings, opts);
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};
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// 初次或重设选择器组
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if (!$.isArray(self.selectArray) || !self.selectArray.length || (opts && opts.selects)) {
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self.selectArray = [];
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if ($.isArray(self.settings.selects) && self.settings.selects.length) {
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var _tempSelect;
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for (var i = 0, l = self.settings.selects.length; i < l; i++) {
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_tempSelect = self.dom.box.find('select.' + self.settings.selects[i]);
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if (!_tempSelect || !_tempSelect.length) {break};
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self.selectArray.push(_tempSelect);
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};
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};
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};
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if (opts) {
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if (!$.isArray(opts.data) && typeof opts.url === 'string' && opts.url.length) {
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$.getJSON(self.settings.url, function(json) {
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cxSelect.start.call(self, json);
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});
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} else {
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cxSelect.start.call(self, opts.data);
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};
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};
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};
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// 绑定
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cxSelect.attach = function() {
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var self = this;
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if (!self.attachStatus) {
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self.dom.box.on('change', 'select', self.changeEvent);
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};
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if (typeof self.attachStatus === 'boolean') {
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cxSelect.start.call(self);
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};
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self.attachStatus = true;
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};
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// 移除绑定
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cxSelect.detach = function() {
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var self = this;
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self.dom.box.off('change', 'select', self.changeEvent);
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self.attachStatus = false;
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};
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// 清空选项
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cxSelect.clear = function(index) {
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var self = this;
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var _style = {
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display: '',
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visibility: ''
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};
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index = isNaN(index) ? 0 : index;
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// 清空后面的 select
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for (var i = index, l = self.selectArray.length; i < l; i++) {
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self.selectArray[i].empty().prop('disabled', true);
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if (self.settings.emptyStyle === 'none') {
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_style.display = 'none';
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} else if (self.settings.emptyStyle === 'hidden') {
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_style.visibility = 'hidden';
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};
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self.selectArray[i].css(_style);
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};
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};
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cxSelect.start = function(data) {
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var self = this;
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if ($.isArray(data)) {
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self.settings.data = cxSelect.getData(data, self.settings.jsonSpace);
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};
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if (!self.selectArray.length) {return};
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// 保存默认值
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for (var i = 0, l = self.selectArray.length; i < l; i++) {
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if (typeof self.selectArray[i].attr('data-value') !== 'string' && self.selectArray[i][0].options.length) {
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self.selectArray[i].attr('data-value', self.selectArray[i].val());
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};
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};
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if (self.settings.data || (typeof self.selectArray[0].data('url') === 'string' && self.selectArray[0].data('url').length)) {
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cxSelect.getOptionData.call(self, 0);
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} else {
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self.selectArray[0].prop('disabled', false).css({
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'display': '',
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'visibility': ''
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});
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};
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};
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// 获取选项数据
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cxSelect.getOptionData = function(index) {
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var self = this;
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if (typeof index !== 'number' || isNaN(index) || index < 0 || index >= self.selectArray.length) {return};
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var _indexPrev = index - 1;
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var _select = self.selectArray[index];
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var _selectData;
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var _valueIndex;
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var _dataUrl = _select.data('url');
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var _jsonSpace = typeof _select.data('jsonSpace') === 'undefined' ? self.settings.jsonSpace : _select.data('jsonSpace');
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var _query = {};
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var _queryName;
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var _selectName;
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var _selectValue;
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cxSelect.clear.call(self, index);
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// 使用独立接口
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if (typeof _dataUrl === 'string' && _dataUrl.length) {
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if (index > 0) {
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for (var i = 0, j = 1; i < index; i++, j++) {
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_queryName = self.selectArray[j].data('queryName');
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_selectName = self.selectArray[i].attr('name');
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_selectValue = self.selectArray[i].val();
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if (typeof _queryName === 'string' && _queryName.length) {
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_query[_queryName] = _selectValue;
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} else if (typeof _selectName === 'string' && _selectName.length) {
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_query[_selectName] = _selectValue;
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};
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};
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};
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$.getJSON(_dataUrl, _query, function(json) {
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_selectData = cxSelect.getData(json, _jsonSpace);
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cxSelect.buildOption.call(self, index, _selectData);
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});
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// 使用整合数据
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} else if (self.settings.data && typeof self.settings.data === 'object') {
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_selectData = self.settings.data;
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for (var i = 0; i < index; i++) {
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_valueIndex = cxSelect.getIndex(self.selectArray[i][0].selectedIndex, typeof self.selectArray[i].data('required') === 'boolean' ? self.selectArray[i].data('required') : self.settings.required);
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if (typeof _selectData[_valueIndex] === 'object' && $.isArray(_selectData[_valueIndex][self.settings.jsonSub]) && _selectData[_valueIndex][self.settings.jsonSub].length) {
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_selectData = _selectData[_valueIndex][self.settings.jsonSub];
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} else {
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_selectData = null;
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break;
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};
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};
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cxSelect.buildOption.call(self, index, _selectData);
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};
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};
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// 构建选项列表
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cxSelect.buildOption = function(index, data) {
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var self = this;
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var _select = self.selectArray[index];
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var _required = typeof _select.data('required') === 'boolean' ? _select.data('required') : self.settings.required;
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var _firstTitle = typeof _select.data('firstTitle') === 'undefined' ? self.settings.firstTitle : _select.data('firstTitle');
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var _firstValue = typeof _select.data('firstValue') === 'undefined' ? self.settings.firstValue : _select.data('firstValue');
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var _jsonName = typeof _select.data('jsonName') === 'undefined' ? self.settings.jsonName : _select.data('jsonName');
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var _jsonValue = typeof _select.data('jsonValue') === 'undefined' ? self.settings.jsonValue : _select.data('jsonValue');
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if (!$.isArray(data)) {return};
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var _html = !_required ? '<option value="' + String(_firstValue) + '">' + String(_firstTitle) + '</option>' : '';
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// 区分标题、值的数据
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if (typeof _jsonName === 'string' && _jsonName.length) {
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// 无值字段时使用标题作为值
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if (typeof _jsonValue !== 'string' || !_jsonValue.length) {
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_jsonValue = _jsonName;
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};
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for (var i = 0, l = data.length; i < l; i++) {
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_html += '<option value="' + String(data[i][_jsonValue]) + '">' + String(data[i][_jsonName]) + '</option>';
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};
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// 数组即为值的数据
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} else {
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for (var i = 0, l = data.length; i < l; i++) {
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_html += '<option value="' + String(data[i]) + '">' + String(data[i]) + '</option>';
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};
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};
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_select.html(_html).prop('disabled', false).css({
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'display': '',
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'visibility': ''
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});
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// 初次加载设置默认值
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if (typeof _select.attr('data-value') === 'string') {
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_select.val(String(_select.attr('data-value'))).removeAttr('data-value');
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if (_select[0].selectedIndex < 0) {
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_select[0].options[0].selected = true;
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};
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};
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if (_required || _select[0].selectedIndex > 0) {
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_select.trigger('change');
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};
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};
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// 改变选择时的处理
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cxSelect.selectChange = function(name) {
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var self = this;
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if (typeof name !== 'string' || !name.length) {return};
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var index;
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name = name.replace(/\s+/g, ',');
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name = ',' + name + ',';
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// 获取当前 select 位置
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for (var i = 0, l = self.selectArray.length; i < l; i++) {
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if (name.indexOf(',' + self.settings.selects[i] + ',') > -1) {
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index = i;
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break;
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};
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};
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if (typeof index === 'number' && index > -1) {
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index += 1;
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cxSelect.getOptionData.call(self, index);
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};
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};
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$.cxSelect = function() {
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return cxSelect.apply(this, arguments);
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};
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// 默认值
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$.cxSelect.defaults = {
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selects: [], // 下拉选框组
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url: null, // 列表数据文件路径（URL）或数组数据
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data: null, // 自定义数据
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emptyStyle: null, // 无数据状态显示方式
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required: false, // 是否为必选
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firstTitle: '请选择', // 第一个选项的标题
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firstValue: '', // 第一个选项的值
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jsonSpace: '', // 数据命名空间
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jsonName: 'n', // 数据标题字段名称
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jsonValue: '', // 数据值字段名称
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jsonSub: 's' // 子集数据字段名称
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};
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$.fn.cxSelect = function(settings, callback) {
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this.each(function(i) {
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$.cxSelect(this, settings, callback);
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});
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return this;
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};
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}));
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