mirror of https://github.com/layui/layui
508 lines
19 KiB
JavaScript
508 lines
19 KiB
JavaScript
import layui from '../core.js';
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import $ from 'jquery';
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import lay from './lay.js';
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/**
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* slider 滑块组件
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*/
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// 外部接口
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var slider = {
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config: {},
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index: layui.slider ? (layui.slider.index + 10000) : 0,
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// 设置全局项
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set: function(options) {
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var that = this;
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that.config = $.extend({}, that.config, options);
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return that;
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},
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// 事件
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on: function(events, callback) {
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return layui.onevent.call(this, MOD_NAME, events, callback);
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}
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};
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// 操作当前实例
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var thisSlider = function(){
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var that = this;
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var options = that.config;
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return {
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setValue: function(value, index){ // 设置值
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value = value > options.max ? options.max : value;
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value = value < options.min ? options.min : value;
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options.value = value;
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return that.slide('set', value, index || 0);
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},
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config: options
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}
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};
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// 字符常量
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var MOD_NAME = 'slider';
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var DISABLED = 'layui-disabled';
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var ELEM_VIEW = 'layui-slider';
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var SLIDER_BAR = 'layui-slider-bar';
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var SLIDER_WRAP = 'layui-slider-wrap';
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var SLIDER_WRAP_BTN = 'layui-slider-wrap-btn';
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var SLIDER_TIPS = 'layui-slider-tips';
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var SLIDER_INPUT = 'layui-slider-input';
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var SLIDER_INPUT_TXT = 'layui-slider-input-txt';
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var SLIDER_INPUT_BTN = 'layui-slider-input-btn';
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var ELEM_HOVER = 'layui-slider-hover';
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// 构造器
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var Class = function(options){
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var that = this;
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that.index = ++slider.index;
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that.config = $.extend({}, that.config, slider.config, options);
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that.render();
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};
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// 默认配置
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Class.prototype.config = {
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type: 'default', //滑块类型，垂直：vertical
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min: 0, //最小值
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max: 100, //最大值，默认100
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value: 0, //初始值，默认为0
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step: 1, //间隔值
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showstep: false, //间隔点开启
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tips: true, //文字提示，开启
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tipsAlways: false, //文字提示，始终开启
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input: false, //输入框，关闭
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range: false, //范围选择，与输入框不能同时开启，默认关闭
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height: 200, //配合 type:"vertical" 使用，默认200px
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disabled: false, //滑块禁用，默认关闭
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theme: '#16baaa' //主题颜色
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};
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// 数值精度
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Class.prototype.precision = function(){
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var that = this;
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var options = that.config;
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var precisions = $.map([options.min, options.max, options.step], function(v, i){
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var decimalArr = String(v).split('.');
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return decimalArr[1] ? decimalArr[1].length : 0;
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});
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return Math.max.apply(null, precisions);
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};
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//滑块渲染
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Class.prototype.render = function(){
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var that = this;
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var options = that.config;
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// 若 elem 非唯一，则拆分为多个实例
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var elem = $(options.elem);
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if(elem.length > 1){
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layui.each(elem, function(){
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slider.render($.extend({}, options, {
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elem: this
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}));
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});
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return that;
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}
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// 合并 lay-options 属性上的配置信息
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$.extend(options, lay.options(elem[0]));
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//间隔值不能小于等于 0
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if(options.step <= 0) options.step = 1;
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//最大值不能小于最小值
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if(options.max < options.min) options.max = options.min + options.step;
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//判断是否开启双滑块
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if(options.range){
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options.value = typeof(options.value) == 'object' ? options.value : [options.min, options.value];
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var minValue = Math.min(options.value[0], options.value[1])
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,maxValue = Math.max(options.value[0], options.value[1]);
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options.value[0] = Math.max(minValue,options.min);
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options.value[1] = Math.max(maxValue,options.min);
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options.value[0] = Math.min(options.value[0],options.max);
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options.value[1] = Math.min(options.value[1],options.max);
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var scaleFir = (options.value[0] - options.min) / (options.max - options.min) * 100;
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var scaleSec = (options.value[1] - options.min) / (options.max - options.min) * 100;
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var scale = scaleSec - scaleFir + '%';
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scaleFir = scaleFir + '%';
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scaleSec = scaleSec + '%';
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} else {
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//如果初始值是一个数组，则获取数组的最小值
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if(typeof options.value == 'object'){
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options.value = Math.min.apply(null, options.value);
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}
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//初始值不能小于最小值且不能大于最大值
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if(options.value < options.min) options.value = options.min;
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if(options.value > options.max) options.value = options.max;
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var scale = (options.value - options.min) / (options.max - options.min) * 100 + '%';
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}
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//如果禁用，颜色为统一的灰色
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var theme = options.disabled ? '#c2c2c2' : options.theme;
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//滑块
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var temp = '<div class="layui-slider '+ (options.type === 'vertical' ? 'layui-slider-vertical' : '') +'">'+ (options.tips ? '<div class="'+ SLIDER_TIPS +'" '+ (options.tipsAlways ? '' : 'style="display:none;"') +'></div>' : '') +
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'<div class="layui-slider-bar" style="background:'+ theme +'; '+ (options.type === 'vertical' ? 'height' : 'width') +':'+ scale +';'+ (options.type === 'vertical' ? 'bottom' : 'left') +':'+ (scaleFir || 0) +';"></div><div class="layui-slider-wrap" style="'+ (options.type === 'vertical' ? 'bottom' : 'left') +':'+ (scaleFir || scale) +';">' +
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'<div class="layui-slider-wrap-btn" style="border: 2px solid '+ theme +';"></div></div>'+ (options.range ? '<div class="layui-slider-wrap" style="'+ (options.type === 'vertical' ? 'bottom' : 'left') +':'+ scaleSec +';"><div class="layui-slider-wrap-btn" style="border: 2px solid '+ theme +';"></div></div>' : '') +'</div>';
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var othis = $(options.elem);
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var hasRender = othis.next('.' + ELEM_VIEW);
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//生成替代元素
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hasRender[0] && hasRender.remove(); //如果已经渲染，则Rerender
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that.elemTemp = $(temp);
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//把数据缓存到滑块上
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if(options.range){
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that.elemTemp.find('.' + SLIDER_WRAP).eq(0).data('value', options.value[0]);
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that.elemTemp.find('.' + SLIDER_WRAP).eq(1).data('value', options.value[1]);
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}else {
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that.elemTemp.find('.' + SLIDER_WRAP).data('value', options.value);
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}
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//插入替代元素
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othis.html(that.elemTemp);
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//垂直滑块
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if(options.type === 'vertical'){
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that.elemTemp.height(options.height + 'px');
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}
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//显示间断点
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if(options.showstep){
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var number = (options.max - options.min) / options.step, item = '';
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for(var i = 1; i < number + 1; i++) {
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var step = i * 100 / number;
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if(step < 100){
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item += '<div class="layui-slider-step" style="'+ (options.type === 'vertical' ? 'bottom' : 'left') +':'+ step +'%"></div>';
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}
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}
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that.elemTemp.append(item);
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}
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//插入输入框
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if(options.input && !options.range){
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var elemInput = $('<div class="layui-slider-input"><div class="layui-slider-input-txt"><input type="text" class="layui-input"></div><div class="layui-slider-input-btn"><i class="layui-icon layui-icon-up"></i><i class="layui-icon layui-icon-down"></i></div></div>');
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othis.css("position","relative");
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othis.append(elemInput);
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othis.find('.' + SLIDER_INPUT_TXT).children('input').val(options.value);
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if(options.type === 'vertical'){
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elemInput.css({
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left: 0
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,top: -48
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});
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} else {
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that.elemTemp.css("margin-right", elemInput.outerWidth() + 15);
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}
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}
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//给未禁止的滑块滑动事件
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if(!options.disabled){
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that.slide();
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}else {
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that.elemTemp.addClass(DISABLED);
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that.elemTemp.find('.' + SLIDER_WRAP_BTN).addClass(DISABLED);
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}
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/**
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* @description 设置提示文本内容
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* @param {Element} sliderWrapBtnElem 提示文本节点元素
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*/
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function setSliderTipsTxt(sliderWrapBtnElem) {
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var value = sliderWrapBtnElem.parent().data('value');
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var tipsTxt = options.setTips ? options.setTips(value) : value;
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that.elemTemp.find('.' + SLIDER_TIPS).html(tipsTxt);
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}
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/**
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* @description 计算提示文本元素的 position left
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* @param {Element} sliderWrapBtnElem 提示文本节点元素
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*/
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function calcSliderTipsLeft(sliderWrapBtnElem){
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var sliderWidth = options.type === 'vertical' ? options.height : that.elemTemp[0].offsetWidth;
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var sliderWrap = that.elemTemp.find('.' + SLIDER_WRAP);
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var tipsLeft = options.type === 'vertical' ? (sliderWidth - sliderWrapBtnElem.parent()[0].offsetTop - sliderWrap.height()) : sliderWrapBtnElem.parent()[0].offsetLeft;
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var left = tipsLeft / sliderWidth * 100;
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return left
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}
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/**
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* @description 设置提示文本元素的 position left
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* @param {number} left 要设置的 left 的大小
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*/
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function setSliderTipsLeft(left) {
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if(options.type === 'vertical'){
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that.elemTemp.find('.' + SLIDER_TIPS).css({
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"bottom": left + '%',
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"margin-bottom": "20px",
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"display": "inline-block"
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});
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} else {
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that.elemTemp.find('.' + SLIDER_TIPS).css({
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"left": left + '%',
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"display": "inline-block"
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});
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}
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}
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//判断是否要始终显示提示文本
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if(options.tips){
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if(options.tipsAlways){
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var sliderWrapBtnElem = that.elemTemp.find('.' + SLIDER_WRAP_BTN);
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setSliderTipsTxt(sliderWrapBtnElem);
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var left = calcSliderTipsLeft(sliderWrapBtnElem);
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setSliderTipsLeft(left);
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}else {
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//划过滑块显示数值
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var timer;
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that.elemTemp.find('.' + SLIDER_WRAP_BTN).on('mouseover', function(){
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setSliderTipsTxt($(this));
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var left = calcSliderTipsLeft($(this));
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clearTimeout(timer);
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timer = setTimeout(function(){
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setSliderTipsLeft(left);
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}, 300);
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}).on('mouseout', function(){
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clearTimeout(timer);
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if(!options.tipsAlways){
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that.elemTemp.find('.' + SLIDER_TIPS).css("display", "none");
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}
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});
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}
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}
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};
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//滑块滑动
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Class.prototype.slide = function(setValue, value, i){
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var that = this;
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var options = that.config;
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var sliderAct = that.elemTemp;
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var sliderWidth = function(){
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return options.type === 'vertical' ? options.height : sliderAct[0].offsetWidth
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};
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var sliderWrap = sliderAct.find('.' + SLIDER_WRAP);
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var sliderTxt = sliderAct.next('.' + SLIDER_INPUT);
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var inputValue = sliderTxt.children('.' + SLIDER_INPUT_TXT).children('input').val();
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var step = 100 / ((options.max - options.min) / options.step);
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var precision = that.precision();
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var change = function(offsetValue, index, from){
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if(Math.ceil(offsetValue) * step > 100){
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offsetValue = Math.ceil(offsetValue) * step;
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}else {
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offsetValue = Math.round(offsetValue) * step;
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}
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offsetValue = offsetValue > 100 ? 100: offsetValue;
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offsetValue = offsetValue < 0 ? 0: offsetValue;
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sliderWrap.eq(index).css((options.type === 'vertical' ?'bottom':'left'), offsetValue + '%');
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var firLeft = valueTo(sliderWrap[0].offsetLeft);
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var secLeft = options.range ? valueTo(sliderWrap[1].offsetLeft) : 0;
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if(options.type === 'vertical'){
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sliderAct.find('.' + SLIDER_TIPS).css({"bottom":offsetValue + '%', "margin-bottom":"20px"});
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firLeft = valueTo(sliderWidth() - sliderWrap[0].offsetTop - sliderWrap.height());
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secLeft = options.range ? valueTo(sliderWidth() - sliderWrap[1].offsetTop - sliderWrap.height()) : 0;
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}else {
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sliderAct.find('.' + SLIDER_TIPS).css("left",offsetValue + '%');
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}
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firLeft = firLeft > 100 ? 100: firLeft;
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secLeft = secLeft > 100 ? 100: secLeft;
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var minLeft = Math.min(firLeft, secLeft)
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,wrapWidth = Math.abs(firLeft - secLeft);
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if(options.type === 'vertical'){
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sliderAct.find('.' + SLIDER_BAR).css({"height":wrapWidth + '%', "bottom":minLeft + '%'});
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}else {
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sliderAct.find('.' + SLIDER_BAR).css({"width":wrapWidth + '%', "left":minLeft + '%'});
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}
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var selfValue = options.min + (options.max - options.min) * offsetValue / 100;
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selfValue = Number(parseFloat(selfValue).toFixed(precision));
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inputValue = selfValue;
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sliderTxt.children('.' + SLIDER_INPUT_TXT).children('input').val(inputValue);
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sliderWrap.eq(index).data('value', selfValue);
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sliderAct.find('.' + SLIDER_TIPS).html(options.setTips ? options.setTips(selfValue) : selfValue);
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//如果开启范围选择，则返回数组值
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if(options.range){
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var arrValue = [
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sliderWrap.eq(0).data('value'),
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sliderWrap.eq(1).data('value')
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];
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if(arrValue[0] > arrValue[1]) arrValue.reverse(); //如果前面的圆点超过了后面的圆点值，则调换顺序
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}
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that.value = options.range ? arrValue : selfValue; // 最新值
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options.change && options.change(that.value); // change 回调
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// 值完成选中的事件
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if(from === 'done') options.done && options.done(that.value);
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};
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var valueTo = function(value){
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var oldLeft = value / sliderWidth() * 100 / step;
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var left = Math.round(oldLeft) * step;
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if(value == sliderWidth()){
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left = Math.ceil(oldLeft) * step;
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}
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return left;
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};
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//拖拽元素
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var elemMove = $(['<div class="layui-auxiliar-moving" id="LAY-slider-moving"></div'].join(''));
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var createMoveElem = function(sliderBtnElem, move, up){
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var upCall = function(){
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// 移动端延时一秒关闭
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up && up(lay.touchEventsSupported() ? 1000 : 0);
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elemMove.remove();
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options.done && options.done(that.value);
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// 移动端
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if (lay.touchEventsSupported()) {
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sliderBtnElem[0].removeEventListener('touchmove', move, lay.passiveSupported ? { passive: false } : false);
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sliderBtnElem[0].removeEventListener('touchend', upCall);
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sliderBtnElem[0].removeEventListener('touchcancel', upCall);
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}
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};
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$('#LAY-slider-moving')[0] || $('body').append(elemMove);
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elemMove.on('mousemove', move);
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elemMove.on('mouseup', upCall).on('mouseleave', upCall);
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// 移动端
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if (lay.touchEventsSupported()) {
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sliderBtnElem[0].addEventListener('touchmove', move, lay.passiveSupported ? { passive: false } : false);
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sliderBtnElem[0].addEventListener('touchend', upCall);
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sliderBtnElem[0].addEventListener('touchcancel', upCall);
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}
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};
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//动态赋值
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if(setValue === 'set'){
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return change((value - options.min) / (options.max - options.min) * 100 / step, i, 'done');
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}
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//滑块滑动
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sliderAct.find('.' + SLIDER_WRAP_BTN).each(function(index){
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var othis = $(this);
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othis.on('mousedown touchstart', function(e){
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e = e || window.event;
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if(e.type === 'touchstart'){
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e.clientX = e.originalEvent.touches[0].clientX;
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e.clientY = e.originalEvent.touches[0].clientY;
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}
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var oldleft = othis.parent()[0].offsetLeft;
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var oldx = e.clientX;
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if(options.type === 'vertical'){
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oldleft = sliderWidth() - othis.parent()[0].offsetTop - sliderWrap.height();
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oldx = e.clientY;
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}
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var move = function(e){
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e = e || window.event;
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if (e.type === 'touchmove') {
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e.clientX = e.touches[0].clientX;
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e.clientY = e.touches[0].clientY;
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}
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var left = oldleft + (options.type === 'vertical' ? (oldx - e.clientY) : (e.clientX - oldx));
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if(left < 0)left = 0;
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if(left > sliderWidth())left = sliderWidth();
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var reaLeft = left / sliderWidth() * 100 / step;
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change(reaLeft, index);
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othis.addClass(ELEM_HOVER);
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sliderAct.find('.' + SLIDER_TIPS).show();
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e.preventDefault();
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};
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var up = function(delay){
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othis.removeClass(ELEM_HOVER);
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if(!options.tipsAlways){
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setTimeout(function(){
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sliderAct.find('.' + SLIDER_TIPS).hide();
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}, delay);
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}
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};
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createMoveElem(othis, move, up);
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});
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});
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// 点击滑块
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sliderAct.on('click', function(e){
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var main = $('.' + SLIDER_WRAP_BTN);
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var othis = $(this);
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if(!main.is(event.target) && main.has(event.target).length === 0 && main.length){
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var index;
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var offset = options.type === 'vertical'
|
||
? (sliderWidth() - e.clientY + othis.offset().top - $(window).scrollTop())
|
||
:(e.clientX - othis.offset().left - $(window).scrollLeft());
|
||
|
||
if(offset < 0)offset = 0;
|
||
if(offset > sliderWidth()) offset = sliderWidth();
|
||
var reaLeft = offset / sliderWidth() * 100 / step;
|
||
if(options.range){
|
||
if(options.type === 'vertical'){
|
||
index = Math.abs(offset - parseInt($(sliderWrap[0]).css('bottom'))) > Math.abs(offset - parseInt($(sliderWrap[1]).css('bottom'))) ? 1 : 0;
|
||
} else {
|
||
index = Math.abs(offset - sliderWrap[0].offsetLeft) > Math.abs(offset - sliderWrap[1].offsetLeft) ? 1 : 0;
|
||
}
|
||
} else {
|
||
index = 0;
|
||
}
|
||
change(reaLeft, index, 'done');
|
||
e.preventDefault();
|
||
}
|
||
});
|
||
|
||
//点击加减输入框
|
||
sliderTxt.children('.' + SLIDER_INPUT_BTN).children('i').each(function(index){
|
||
$(this).on('click', function(){
|
||
inputValue = sliderTxt.children('.' + SLIDER_INPUT_TXT).children('input').val();
|
||
if(index == 1){ //减
|
||
inputValue = inputValue - options.step < options.min
|
||
? options.min
|
||
: Number(inputValue) - options.step;
|
||
}else {
|
||
inputValue = Number(inputValue) + options.step > options.max
|
||
? options.max
|
||
: Number(inputValue) + options.step;
|
||
}
|
||
var inputScale = (inputValue - options.min) / (options.max - options.min) * 100 / step;
|
||
change(inputScale, 0, 'done');
|
||
});
|
||
});
|
||
|
||
//获取输入框值
|
||
var getInputValue = function(){
|
||
var realValue = this.value;
|
||
realValue = isNaN(realValue) ? 0 : realValue;
|
||
realValue = realValue < options.min ? options.min : realValue;
|
||
realValue = realValue > options.max ? options.max : realValue;
|
||
this.value = realValue;
|
||
var inputScale = (realValue - options.min) / (options.max - options.min) * 100 / step;
|
||
change(inputScale, 0, 'done');
|
||
};
|
||
sliderTxt.children('.' + SLIDER_INPUT_TXT).children('input').on('keydown', function(e){
|
||
if(e.keyCode === 13){
|
||
e.preventDefault();
|
||
getInputValue.call(this);
|
||
}
|
||
}).on('change', getInputValue);
|
||
};
|
||
|
||
//事件处理
|
||
Class.prototype.events = function(){
|
||
var that = this;
|
||
that.config;
|
||
};
|
||
|
||
//核心入口
|
||
slider.render = function(options){
|
||
var inst = new Class(options);
|
||
return thisSlider.call(inst);
|
||
};
|
||
|
||
export { slider as default, slider };
|
||
//# sourceMappingURL=slider.js.map
|