383 lines
15 KiB
JavaScript
383 lines
15 KiB
JavaScript
/**
|
||
|
||
@Title: slider 滑块组件
|
||
@License：MIT
|
||
|
||
*/
|
||
|
||
layui.define('jquery', function(exports){
|
||
"use strict";
|
||
var $ = layui.jquery
|
||
|
||
//外部接口
|
||
,slider = {
|
||
config: {}
|
||
,index: layui.slider ? (layui.slider.index + 10000) : 0
|
||
|
||
//设置全局项
|
||
,set: function(options){
|
||
var that = this;
|
||
that.config = $.extend({}, that.config, options);
|
||
return that;
|
||
}
|
||
|
||
//事件
|
||
,on: function(events, callback){
|
||
return layui.onevent.call(this, MOD_NAME, events, callback);
|
||
}
|
||
}
|
||
|
||
//操作当前实例
|
||
,thisSlider = function(){
|
||
var that = this
|
||
,options = that.config;
|
||
|
||
return {
|
||
setValue: function(value, index){ //设置值
|
||
options.value = value;
|
||
return that.slide('set', value, index || 0);
|
||
}
|
||
,config: options
|
||
}
|
||
}
|
||
|
||
//字符常量
|
||
,MOD_NAME = 'slider', DISABLED = 'layui-disabled', ELEM_VIEW = 'layui-slider', SLIDER_BAR = 'layui-slider-bar', SLIDER_WRAP = 'layui-slider-wrap', SLIDER_WRAP_BTN = 'layui-slider-wrap-btn', SLIDER_TIPS = 'layui-slider-tips', SLIDER_INPUT = 'layui-slider-input', SLIDER_INPUT_TXT = 'layui-slider-input-txt', SLIDER_INPUT_BTN = 'layui-slider-input-btn', ELEM_HOVER = 'layui-slider-hover'
|
||
|
||
//构造器
|
||
,Class = function(options){
|
||
var that = this;
|
||
that.index = ++slider.index;
|
||
that.config = $.extend({}, that.config, slider.config, options);
|
||
that.render();
|
||
};
|
||
|
||
//默认配置
|
||
Class.prototype.config = {
|
||
type: 'default' //滑块类型，垂直：vertical
|
||
,min: 0 //最小值
|
||
,max: 100 //最大值，默认100
|
||
,value: 0 //初始值，默认为0
|
||
,step: 1 //间隔值
|
||
,showstep: false //间隔点开启
|
||
,tips: true //文字提示，开启
|
||
,input: false //输入框，关闭
|
||
,range: false //范围选择，与输入框不能同时开启，默认关闭
|
||
,height: 200 //配合 type:"vertical" 使用，默认200px
|
||
,disabled: false //滑块禁用，默认关闭
|
||
,theme: '#009688' //主题颜色
|
||
};
|
||
|
||
//滑块渲染
|
||
Class.prototype.render = function(){
|
||
var that = this
|
||
,options = that.config;
|
||
|
||
//间隔值不能小于 1
|
||
if(options.step < 1) options.step = 1;
|
||
|
||
//最大值不能小于最小值
|
||
if(options.max < options.min) options.max = options.min + options.step;
|
||
|
||
|
||
|
||
//判断是否开启双滑块
|
||
if(options.range){
|
||
options.value = typeof(options.value) == 'object' ? options.value : [options.min, options.value];
|
||
var minValue = Math.min(options.value[0], options.value[1])
|
||
,maxValue = Math.max(options.value[0], options.value[1]);
|
||
options.value[0] = minValue > options.min ? minValue : options.min;
|
||
options.value[1] = maxValue > options.min ? maxValue : options.min;
|
||
options.value[0] = options.value[0] > options.max ? options.max : options.value[0];
|
||
options.value[1] = options.value[1] > options.max ? options.max : options.value[1];
|
||
|
||
var scaleFir = Math.floor((options.value[0] - options.min) / (options.max - options.min) * 100)
|
||
,scaleSec = Math.floor((options.value[1] - options.min) / (options.max - options.min) * 100)
|
||
,scale = scaleSec - scaleFir + '%';
|
||
scaleFir = scaleFir + '%';
|
||
scaleSec = scaleSec + '%';
|
||
} else {
|
||
//如果初始值是一个数组，则获取数组的最小值
|
||
if(typeof options.value == 'object'){
|
||
options.value = Math.min.apply(null, options.value);
|
||
}
|
||
|
||
//初始值不能小于最小值且不能大于最大值
|
||
if(options.value < options.min) options.value = options.min;
|
||
if(options.value > options.max) options.value = options.max;
|
||
|
||
var scale = Math.floor((options.value - options.min) / (options.max - options.min) * 100) + '%';
|
||
};
|
||
|
||
|
||
//如果禁用，颜色为统一的灰色
|
||
var theme = options.disabled ? '#c2c2c2' : options.theme;
|
||
|
||
//滑块
|
||
var temp = '<div class="layui-slider '+ (options.type === 'vertical' ? 'layui-slider-vertical' : '') +'">'+ (options.tips ? '<div class="layui-slider-tips"></div>' : '') +
|
||
'<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) +';">' +
|
||
'<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>';
|
||
|
||
var othis = $(options.elem)
|
||
,hasRender = othis.next('.' + ELEM_VIEW);
|
||
//生成替代元素
|
||
hasRender[0] && hasRender.remove(); //如果已经渲染，则Rerender
|
||
that.elemTemp = $(temp);
|
||
|
||
//把数据缓存到滑块上
|
||
if(options.range){
|
||
that.elemTemp.find('.' + SLIDER_WRAP).eq(0).data('value', options.value[0]);
|
||
that.elemTemp.find('.' + SLIDER_WRAP).eq(1).data('value', options.value[1]);
|
||
}else{
|
||
that.elemTemp.find('.' + SLIDER_WRAP).data('value', options.value);
|
||
};
|
||
|
||
//插入替代元素
|
||
othis.html(that.elemTemp);
|
||
|
||
//垂直滑块
|
||
if(options.type === 'vertical'){
|
||
that.elemTemp.height(options.height + 'px');
|
||
};
|
||
|
||
//显示间断点
|
||
if(options.showstep){
|
||
var number = (options.max - options.min) / options.step, item = '';
|
||
for(var i = 1; i < number + 1; i++) {
|
||
var step = i * 100 / number;
|
||
if(step < 100){
|
||
item += '<div class="layui-slider-step" style="'+ (options.type === 'vertical' ? 'bottom' : 'left') +':'+ step +'%"></div>'
|
||
}
|
||
};
|
||
that.elemTemp.append(item);
|
||
};
|
||
|
||
//插入输入框
|
||
if(options.input && !options.range){
|
||
var elemInput = $('<div class="layui-slider-input layui-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>');
|
||
othis.css("position","relative");
|
||
othis.append(elemInput);
|
||
othis.find('.' + SLIDER_INPUT_TXT).children('input').val(options.value);
|
||
if(options.type === 'vertical'){
|
||
elemInput.css({
|
||
left: 0
|
||
,top: -48
|
||
});
|
||
} else {
|
||
that.elemTemp.css("margin-right", elemInput.outerWidth() + 15);
|
||
}
|
||
};
|
||
|
||
//给未禁止的滑块滑动事件
|
||
if(!options.disabled){
|
||
that.slide();
|
||
}else{
|
||
that.elemTemp.addClass(DISABLED);
|
||
that.elemTemp.find('.' + SLIDER_WRAP_BTN).addClass(DISABLED);
|
||
};
|
||
|
||
//划过滑块显示数值
|
||
that.elemTemp.find('.' + SLIDER_WRAP_BTN).on('mouseover', function(){
|
||
var sliderWidth = options.type === 'vertical' ? options.height : that.elemTemp[0].offsetWidth
|
||
,sliderWrap = that.elemTemp.find('.' + SLIDER_WRAP)
|
||
,tipsLeft = options.type === 'vertical' ? (sliderWidth - $(this).parent()[0].offsetTop - sliderWrap.height()) : $(this).parent()[0].offsetLeft
|
||
,left = tipsLeft / sliderWidth * 100
|
||
,value = $(this).parent().data('value')
|
||
,tipsTxt = options.setTips ? options.setTips(value) : value;
|
||
that.elemTemp.find('.' + SLIDER_TIPS).html(tipsTxt);
|
||
if(options.type === 'vertical'){
|
||
that.elemTemp.find('.' + SLIDER_TIPS).css({"bottom":left + '%', "margin-bottom":"20px", "display":"inline-block"});
|
||
}else{
|
||
that.elemTemp.find('.' + SLIDER_TIPS).css({"left":left + '%', "display":"inline-block"});
|
||
};
|
||
}).on('mouseout', function(){
|
||
that.elemTemp.find('.' + SLIDER_TIPS).css("display", "none");
|
||
});
|
||
};
|
||
|
||
//滑块滑动
|
||
Class.prototype.slide = function(setValue, value, i){
|
||
var that = this
|
||
,options = that.config
|
||
,sliderAct = that.elemTemp
|
||
,sliderWidth = function(){
|
||
return options.type === 'vertical' ? options.height : sliderAct[0].offsetWidth
|
||
}
|
||
,sliderWrap = sliderAct.find('.' + SLIDER_WRAP)
|
||
,sliderTxt = sliderAct.next('.' + SLIDER_INPUT)
|
||
,inputValue = sliderTxt.children('.' + SLIDER_INPUT_TXT).children('input').val()
|
||
,step = 100 / ((options.max - options.min) / Math.ceil(options.step))
|
||
,change = function(offsetValue, index){
|
||
if(Math.ceil(offsetValue) * step > 100){
|
||
offsetValue = Math.ceil(offsetValue) * step
|
||
}else{
|
||
offsetValue = Math.round(offsetValue) * step
|
||
};
|
||
offsetValue = offsetValue > 100 ? 100: offsetValue;
|
||
sliderWrap.eq(index).css((options.type === 'vertical' ?'bottom':'left'), offsetValue + '%');
|
||
var firLeft = valueTo(sliderWrap[0].offsetLeft)
|
||
,secLeft = options.range ? valueTo(sliderWrap[1].offsetLeft) : 0;
|
||
if(options.type === 'vertical'){
|
||
sliderAct.find('.' + SLIDER_TIPS).css({"bottom":offsetValue + '%', "margin-bottom":"20px"});
|
||
firLeft = valueTo(sliderWidth() - sliderWrap[0].offsetTop - sliderWrap.height());
|
||
secLeft = options.range ? valueTo(sliderWidth() - sliderWrap[1].offsetTop - sliderWrap.height()) : 0;
|
||
}else{
|
||
sliderAct.find('.' + SLIDER_TIPS).css("left",offsetValue + '%');
|
||
};
|
||
firLeft = firLeft > 100 ? 100: firLeft;
|
||
secLeft = secLeft > 100 ? 100: secLeft;
|
||
var minLeft = Math.min(firLeft, secLeft)
|
||
,wrapWidth = Math.abs(firLeft - secLeft);
|
||
if(options.type === 'vertical'){
|
||
sliderAct.find('.' + SLIDER_BAR).css({"height":wrapWidth + '%', "bottom":minLeft + '%'});
|
||
}else{
|
||
sliderAct.find('.' + SLIDER_BAR).css({"width":wrapWidth + '%', "left":minLeft + '%'});
|
||
};
|
||
var selfValue = options.min + Math.round((options.max - options.min) * offsetValue / 100);
|
||
inputValue = selfValue;
|
||
sliderTxt.children('.' + SLIDER_INPUT_TXT).children('input').val(inputValue);
|
||
sliderWrap.eq(index).data('value', selfValue);
|
||
sliderAct.find('.' + SLIDER_TIPS).html(options.setTips ? options.setTips(selfValue) : selfValue);
|
||
|
||
//如果开启范围选择，则返回数组值
|
||
if(options.range){
|
||
var arrValue = [
|
||
sliderWrap.eq(0).data('value')
|
||
,sliderWrap.eq(1).data('value')
|
||
];
|
||
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
|
||
}
|
||
|
||
//回调
|
||
options.change && options.change(options.range ? arrValue : selfValue);
|
||
}
|
||
,valueTo = function(value){
|
||
var oldLeft = value / sliderWidth() * 100 / step
|
||
,left = Math.round(oldLeft) * step;
|
||
if(value == sliderWidth()){
|
||
left = Math.ceil(oldLeft) * step;
|
||
};
|
||
return left;
|
||
}
|
||
|
||
//拖拽元素
|
||
,elemMove = $(['<div class="layui-auxiliar-moving" id="LAY-slider-moving"></div'].join(''))
|
||
,createMoveElem = function(move, up){
|
||
var upCall = function(){
|
||
up && up();
|
||
elemMove.remove();
|
||
};
|
||
$('#LAY-slider-moving')[0] || $('body').append(elemMove);
|
||
elemMove.on('mousemove', move);
|
||
elemMove.on('mouseup', upCall).on('mouseleave', upCall);
|
||
};
|
||
|
||
//动态赋值
|
||
if(setValue === 'set') return change(value, i);
|
||
|
||
//滑块滑动
|
||
sliderAct.find('.' + SLIDER_WRAP_BTN).each(function(index){
|
||
var othis = $(this);
|
||
othis.on('mousedown', function(e){
|
||
e = e || window.event;
|
||
|
||
var oldleft = othis.parent()[0].offsetLeft
|
||
,oldx = e.clientX;
|
||
if(options.type === 'vertical'){
|
||
oldleft = sliderWidth() - othis.parent()[0].offsetTop - sliderWrap.height()
|
||
oldx = e.clientY;
|
||
};
|
||
|
||
var move = function(e){
|
||
e = e || window.event;
|
||
var left = oldleft + (options.type === 'vertical' ? (oldx - e.clientY) : (e.clientX - oldx));
|
||
if(left < 0)left = 0;
|
||
if(left > sliderWidth())left = sliderWidth();
|
||
var reaLeft = left / sliderWidth() * 100 / step;
|
||
change(reaLeft, index);
|
||
othis.addClass(ELEM_HOVER);
|
||
sliderAct.find('.' + SLIDER_TIPS).show();
|
||
e.preventDefault();
|
||
};
|
||
|
||
var up = function(){
|
||
othis.removeClass(ELEM_HOVER);
|
||
sliderAct.find('.' + SLIDER_TIPS).hide();
|
||
};
|
||
|
||
createMoveElem(move, up)
|
||
});
|
||
});
|
||
|
||
//点击滑块
|
||
sliderAct.on('click', function(e){
|
||
var main = $('.' + SLIDER_WRAP_BTN);
|
||
if(!main.is(event.target) && main.has(event.target).length === 0 && main.length){
|
||
var left = options.type === 'vertical' ? (sliderWidth() - e.clientY + $(this).offset().top):(e.clientX - $(this).offset().left), index;
|
||
if(left < 0)left = 0;
|
||
if(left > sliderWidth())left = sliderWidth();
|
||
var reaLeft = left / sliderWidth() * 100 / step;
|
||
if(options.range){
|
||
if(options.type === 'vertical'){
|
||
index = Math.abs(left - parseInt($(sliderWrap[0]).css('bottom'))) > Math.abs(left - parseInt($(sliderWrap[1]).css('bottom'))) ? 1 : 0;
|
||
}else{
|
||
index = Math.abs(left - sliderWrap[0].offsetLeft) > Math.abs(left - sliderWrap[1].offsetLeft) ? 1 : 0;
|
||
}
|
||
}else{
|
||
index = 0;
|
||
};
|
||
change(reaLeft, index);
|
||
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);
|
||
});
|
||
});
|
||
|
||
//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);
|
||
};
|
||
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
|
||
,options = that.config;
|
||
};
|
||
|
||
//核心入口
|
||
slider.render = function(options){
|
||
var inst = new Class(options);
|
||
return thisSlider.call(inst);
|
||
};
|
||
|
||
exports(MOD_NAME, slider);
|
||
}) |