<style>
.datepicker{
    padding: 10px;
}
.datepicker.vue-show{
    display:block;
}
.datepicker>div.vue-show-imo{
    display:block;
}
.datepicker input[type='number']{
    text-align: center;
}
.calendar-button{
    float:right;
    margin: 5px 5px 0;
}
.calendar-time{
    text-align:center;
    margin: 5px 0;
}
 </style>
<template>
    <input type="text" @click="showCalendar" v-model="value" placeholder="{{placeholder}}" class="form-control">
    <div @click.stop=""  @touchstart.stop="" class="datepicker datepicker-dropdown dropdown-menu vue-show" v-show="show" :style="{'left':x+'px','top':y+'px'}" transition="calendar" transition-mode="out-in">
        <div class="datepicker-days vue-show-imo">
            <table class=" table-condensed">
            <thead>
                <tr>
                    <th class="prev">
                        <i class="fa fa-chevron-left fi-arrow-left" @click="prev"></i>
                    </th>
                    <th colspan="5" class="date-switch"> 
                    <input type="number" v-model="year" value="{{year}}" @change="render(year,month)" min="1970" max="2100" maxlength="4" number>
                     / 
                    {{month+1}}
                    </th>
                    <th class="next">
                        <i class="fa fa-chevron-right fi-arrow-right" @click="next"></i>
                    </th>
                </tr>
                <tr>
                    <td v-for="week in weeks" class="week">{{week}}</td>
                </tr>
             </thead>
            <tr v-for="(k1,day) in days">
                <td 
                v-for="(k2,child) in day" 
                :class="{'today':child.today,'disabled':child.disabled}"
                @click="select(k1,k2,$event)" @touchstart="select(k1,k2,$event)">
                {{child.day}}
                <div class="lunar" v-if="showLunar">{{child.lunar}}</div>
                </td>
            </tr>
            </table>
            <div class="calendar-time" v-show="type=='datetime'||type=='time'">
     
                <div class="timer">
                    <input type="number" v-model="hour" value="{{hour}}" min="0" max="23" maxlength="2" number>
                    时
                    <input type="number" v-model="minute" value="{{minute}}" min="0" max="59" maxlength="2" number>
                    分
                    <input type="number" v-model="second" value="{{second}}" min="0" max="59" maxlength="2" number>
                    秒
                </div>
            </div>
            <div class="calendar-button" v-show="type=='datetime'||type=='time'||range">
                <button @click="ok">确定</button>
                <button @click="cancel" class="cancel">取消</button>
            </div>
            </div>
    </div>
</template>

<script>
module.exports = {
    props: {
        show: {
            type: Boolean,
            twoWay: true,
            default:false   
        },
        type: {
            type: String,
            default:"date" 
        },
        value: {
            type: String,
            twoWay: true,
            default:""   
        },
        placeholder: {
            type: String,
            default:"请输入日期"
        },
        x: {
            type: Number,
            default:0 
        },
        y: {
            type: Number,
            default:0
        }, 
        begin: {
            type: String,
            default:""
        }, 
        end: {
            type: String,
            default:""
        },
        range: {
            type: Boolean,
            default:false
        },
        rangeBegin:{
            type: Array,
            default:Array
        },
        rangeEnd:{
            type: Array,
            default:Array
        }
    },
    data:function(){
        return {
            year:0,
            month:0,
            day:0,
            hour:0,
            minute:0,
            second:0,
            days:[],
            today:[],
            currentMonth:Number,
            sep:"/",
            weeks:['日', '一', '二', '三', '四', '五', '六'],
            months:['01', '02', '03', '04', '05', '06', '07', '08', '09', '10', '11', '12']
        }
    },
    created:function(){
        var that=this;
        var now = new Date();
        if(that.value!=""){
            if(that.value.indexOf("-")!=-1)that.sep="-";
            if(that.value.indexOf(".")!=-1)that.sep=".";
 
            if(that.type=="date"){
                var split=that.value.split(that.sep);
                that.year = parseInt(split[0]);
                that.month =parseInt(split[1])-1;
                that.day = parseInt(split[2]);
            }else if(that.type=="datetime"){
                var split=that.value.split(" ");
                var splitDate=split[0].split(that.sep);
                that.year = parseInt(splitDate[0]);
                that.month =parseInt(splitDate[1])-1;
                that.day = parseInt(splitDate[2]);
                if(split.length>1){
                    var splitTime=split[1].split(":");
                    that.hour = splitTime[0];
                    that.minute = splitTime[1];
                    that.second = splitTime[2];
                }
            }
            if(that.range){
                var split=that.value.split(" ~ ");
                if(split.length>1){
                    var beginSplit=split[0].split(that.sep);
                    var endSplit=split[1].split(that.sep);
                    that.rangeBegin=[parseInt(beginSplit[0]),parseInt(beginSplit[1]-1),parseInt(beginSplit[2])];
                    that.rangeEnd=[parseInt(endSplit[0]),parseInt(endSplit[1]-1),parseInt(endSplit[2])];
                }
            }
        }else{
            that.year = now.getFullYear();
            that.month =now.getMonth();
            that.day = now.getDate();
            that.hour = that.zero(now.getHours());
            that.minute = that.zero(now.getMinutes());
            that.second = that.zero(now.getSeconds());
            if(that.range){
                that.rangeBegin=Array;
                that.rangeEnd=Array;
            }
        }
        that.render(that.year,that.month);
    },
    watch:{
        year:function(val,old){
            console.log("new %s old %s time:%s",val,old,+new Date);
        }
    },
    methods:{
        zero:function(n){
            return n<10?'0'+n:n;
        },
        render:function(y,m){
            var that=this;
            var firstDayOfMonth = new Date(y, m, 1).getDay();//当月第一天
            var lastDateOfMonth = new Date(y, m + 1, 0).getDate();//当月最后一天
            var lastDayOfLastMonth = new Date(y, m, 0).getDate();//最后一月的最后一天
            that.year=y;
            that.currentMonth=that.months[m];
            var seletSplit=that.value.split(" ")[0].split(that.sep);
            var i,line=0,temp=[];
            for(i=1;i <= lastDateOfMonth;i++) {
                var dow = new Date(y, m, i).getDay();
                // 第一行
                if (dow == 0) {
                    temp[line]=[];
                }else if (i == 1) {
                    temp[line]=[];
                    var k = lastDayOfLastMonth - firstDayOfMonth + 1;
                    for (var j = 0; j < firstDayOfMonth; j++) {
                        temp[line].push({day:k,disabled:true});
                        k++;
                    }
                }
 
                // 如果是日期范围
                if(that.range){
                      
                    var options={day:i};
       
                    if(that.rangeBegin.length>0){
                        var beginTime=Number(new Date(that.rangeBegin[0],that.rangeBegin[1],that.rangeBegin[2]));
                        var endTime=Number(new Date(that.rangeEnd[0],that.rangeEnd[1],that.rangeEnd[2]));
                        var thisTime=Number(new Date(that.year,that.month,i));
 
                        if(beginTime<=thisTime&&endTime>=thisTime){
                            options.today=true;
                        }
                    }
                    temp[line].push(options);
                }else{
                   
                    var chk = new Date();
                    var chkY = chk.getFullYear();
                    var chkM = chk.getMonth();
                    if(
                        parseInt(seletSplit[0])==that.year 
                        &&
                        parseInt(seletSplit[1])-1==that.month
                        &&
                        parseInt(seletSplit[2])==i
                        &&
                        (that.begin==undefined||that.end==undefined)
                    ){
                        temp[line].push({day:i,today:true});
                        that.today=[line,temp[line].length-1];
                    // 当天
                    }else if (chkY == that.year && chkM == that.month && i == that.day&&that.value==undefined) {
                        temp[line].push({day:i,today:true});
                        that.today=[line,temp[line].length-1];
                    } else {//默认
                        // 1.判断begin和end的日期
                        var options={day:i,today:false};
                        if(that.begin!=undefined){
                            var beginSplit=that.begin.split(that.sep);
                            var beginTime=Number(new Date(parseInt(beginSplit[0]),parseInt(beginSplit[1])-1,parseInt(beginSplit[2])));
                            var thisTime=Number(new Date(that.year,that.month,i));
                            if(beginTime>thisTime)options.disabled=true;
                        }
                        if(that.end!=undefined){
                            var endSplit=that.end.split(that.sep);
                            var endTime=Number(new Date(parseInt(endSplit[0]),parseInt(endSplit[1])-1,parseInt(endSplit[2])));
                            var thisTime=Number(new Date(that.year,that.month,i));
                            if(endTime<thisTime)options.disabled=true;
                        }
                        temp[line].push(options);
                    }   
                }
               
                // 最后一行
                if (dow == 6) {
                    line++;
                }else if (i == lastDateOfMonth) {
                    var k = 1;
                    for (dow; dow < 6; dow++) {
                        temp[line].push({day:k,disabled:true});
                        k++;
                    }
                }
            }//end for
            that.days=temp;
        },
        prev:function(e){
            e.stopPropagation();
            var that=this;
            if (that.month == 0) {
                that.month = 11;
                that.year = that.year - 1;
            } else {
                that.month = that.month - 1;
            }
            that.render(that.year,that.month);
        },
        next:function(e){
            e.stopPropagation();
            var that=this;
            if (that.month == 11) {
                that.month = 0;
                that.year = that.year + 1;
            } else {
                that.month = that.month + 1;
            }
            that.render(that.year,that.month);
        },
        select:function(k1,k2,e){
            if(e!=undefined)e.stopPropagation();
            var that=this;
            // 日期范围
            if(that.range){
                if(that.rangeBegin.length==0||that.rangeEndTemp!=0){
                    that.rangeBegin=[that.year,that.month,that.days[k1][k2].day,that.hour,that.minute,that.second];
                    that.rangeBeginTemp=that.rangeBegin;
                    that.rangeEnd=[that.year,that.month,that.days[k1][k2].day,that.hour,that.minute,that.second];
                    that.rangeEndTemp=0;
                }else{
                    that.rangeEnd=[that.year,that.month,that.days[k1][k2].day,that.hour,that.minute,that.second];
                    that.rangeEndTemp=1;
                    // 判断结束日期小于开始日期则自动颠倒过来
                    if(+new Date(that.rangeEnd[0],that.rangeEnd[1],that.rangeEnd[2])<+new Date(that.rangeBegin[0],that.rangeBegin[1],that.rangeBegin[2])){
                        that.rangeBegin=that.rangeEnd;
                        that.rangeEnd=that.rangeBeginTemp;
                    }
                }
                that.render(that.year,that.month);
            }else{
                // 取消上次选中
                if(that.today.length>0){
                    that.days[that.today[0]][that.today[1]].today=false; 
                }
                 // 设置当前选中天
                that.days[k1][k2].today=true;
                that.day=that.days[k1][k2].day;
                that.today=[k1,k2];
                if(that.type=='date'){
                    that.value=that.year+that.sep+that.zero(that.month+1)+that.sep+that.zero(that.days[k1][k2].day);
                    that.show=false;   
                }
            }
        },
        ok:function(){
            var that=this;
            if(that.range){
                that.value=that.output(that.rangeBegin)+" ~ "+that.output(that.rangeEnd);
            }else{
                that.value=that.output([that.year,that.month,that.day,that.hour,that.minute,that.second]);
            }
            that.show=false;
        },
        cancel:function(){
            this.show=false;
        },
        // 格式化输出
        output:function(args){
            var that=this;
            if(that.type=='time'){
                return that.zero(args[3])+":"+that.zero(args[4])+":"+that.zero(args[5])
            }
            if(that.type=='datetime'){
                return args[0]+that.sep+that.zero(args[1]+1)+that.sep+that.zero(args[2])+" "+that.zero(args[3])+":"+that.zero(args[4])+":"+that.zero(args[5])
            }
            if(that.type=='date'){
                return args[0]+that.sep+that.zero(args[1]+1)+that.sep+that.zero(args[2]);
            }
        },
        showCalendar:function(e){
            e.stopPropagation();
            var that=this;
            that.show=true;
            that.x=e.target.offsetLeft;
            that.y=e.target.offsetTop+e.target.offsetHeight+0;
            var bindHide=function(e){
                e.stopPropagation();
                that.show=false;
                document.removeEventListener('click',bindHide,false);
            };
            setTimeout(function(){
                document.addEventListener('click',bindHide,false);
            },500);
        }
    }
}
</script>