| <template> | 
|     <u-popup | 
|         :show="show" | 
|         mode="bottom" | 
|         closeable | 
|         @close="close" | 
|         :round="round" | 
|         :closeOnClickOverlay="closeOnClickOverlay" | 
|     > | 
|         <view class="u-calendar"> | 
|             <uHeader | 
|                 :title="title" | 
|                 :subtitle="subtitle" | 
|                 :showSubtitle="showSubtitle" | 
|                 :showTitle="showTitle" | 
|             ></uHeader> | 
|             <scroll-view | 
|                 :style="{ | 
|                     height: $u.addUnit(listHeight) | 
|                 }" | 
|                 scroll-y | 
|                 @scroll="onScroll" | 
|                 :scroll-top="scrollTop" | 
|                 :scrollIntoView="scrollIntoView" | 
|             > | 
|                 <uMonth | 
|                     :color="color" | 
|                     :rowHeight="rowHeight" | 
|                     :showMark="showMark" | 
|                     :months="months" | 
|                     :mode="mode" | 
|                     :maxCount="maxCount" | 
|                     :startText="startText" | 
|                     :endText="endText" | 
|                     :defaultDate="defaultDate" | 
|                     :minDate="innerMinDate" | 
|                     :maxDate="innerMaxDate" | 
|                     :maxMonth="monthNum" | 
|                     :readonly="readonly" | 
|                     :maxRange="maxRange" | 
|                     :rangePrompt="rangePrompt" | 
|                     :showRangePrompt="showRangePrompt" | 
|                     :allowSameDay="allowSameDay" | 
|                     ref="month" | 
|                     @monthSelected="monthSelected" | 
|                     @updateMonthTop="updateMonthTop" | 
|                 ></uMonth> | 
|             </scroll-view> | 
|             <slot name="footer" v-if="showConfirm"> | 
|                 <view class="u-calendar__confirm"> | 
|                     <u-button | 
|                         shape="circle" | 
|                         :text=" | 
|                             buttonDisabled ? confirmDisabledText : confirmText | 
|                         " | 
|                         :color="color" | 
|                         @click="confirm" | 
|                         :disabled="buttonDisabled" | 
|                     ></u-button> | 
|                 </view> | 
|             </slot> | 
|         </view> | 
|     </u-popup> | 
| </template> | 
|   | 
| <script> | 
| import uHeader from './header.vue' | 
| import uMonth from './month.vue' | 
| import props from './props.js' | 
| import util from './util.js' | 
| import dayjs from '../../libs/util/dayjs.js' | 
| import Calendar from '../../libs/util/calendar.js' | 
| /** | 
|  * Calendar 日历 | 
|  * @description  此组件用于单个选择日期,范围选择日期等,日历被包裹在底部弹起的容器中. | 
|  * @tutorial https://www.uviewui.com/components/calendar.html | 
|  * | 
|  * @property {String}                title                标题内容 (默认 日期选择 ) | 
|  * @property {Boolean}                showTitle            是否显示标题  (默认 true ) | 
|  * @property {Boolean}                showSubtitle        是否显示副标题    (默认 true ) | 
|  * @property {String}                mode                日期类型选择  single-选择单个日期,multiple-可以选择多个日期,range-选择日期范围 ( 默认 'single' ) | 
|  * @property {String}                startText            mode=range时,第一个日期底部的提示文字  (默认 '开始' ) | 
|  * @property {String}                endText                mode=range时,最后一个日期底部的提示文字 (默认 '结束' ) | 
|  * @property {Array}                customList            自定义列表 | 
|  * @property {String}                color                主题色,对底部按钮和选中日期有效  (默认 ‘#3c9cff' ) | 
|  * @property {String | Number}        minDate                最小的可选日期     (默认 0 ) | 
|  * @property {String | Number}        maxDate                最大可选日期  (默认 0 ) | 
|  * @property {Array | String| Date}    defaultDate            默认选中的日期,mode为multiple或range是必须为数组格式 | 
|  * @property {String | Number}        maxCount            mode=multiple时,最多可选多少个日期  (默认     Number.MAX_SAFE_INTEGER  ) | 
|  * @property {String | Number}        rowHeight            日期行高 (默认 56 ) | 
|  * @property {Function}                formatter            日期格式化函数 | 
|  * @property {Boolean}                showLunar            是否显示农历  (默认 false ) | 
|  * @property {Boolean}                showMark            是否显示月份背景色 (默认 true ) | 
|  * @property {String}                confirmText            确定按钮的文字 (默认 '确定' ) | 
|  * @property {String}                confirmDisabledText    确认按钮处于禁用状态时的文字 (默认 '确定' ) | 
|  * @property {Boolean}                show                是否显示日历弹窗 (默认 false ) | 
|  * @property {Boolean}                closeOnClickOverlay    是否允许点击遮罩关闭日历 (默认 false ) | 
|  * @property {Boolean}                readonly            是否为只读状态,只读状态下禁止选择日期 (默认 false ) | 
|  * @property {String | Number}        maxRange            日期区间最多可选天数,默认无限制,mode = range时有效 | 
|  * @property {String}                rangePrompt            范围选择超过最多可选天数时的提示文案,mode = range时有效 | 
|  * @property {Boolean}                showRangePrompt        范围选择超过最多可选天数时,是否展示提示文案,mode = range时有效 (默认 true ) | 
|  * @property {Boolean}                allowSameDay        是否允许日期范围的起止时间为同一天,mode = range时有效 (默认 false ) | 
|  * @property {Number|String}        round                圆角值,默认无圆角  (默认 0 ) | 
|  * @property {Number|String}        monthNum            最多展示的月份数量  (默认 3 ) | 
|  * | 
|  * @event {Function()} confirm         点击确定按钮时触发        选择日期相关的返回参数 | 
|  * @event {Function()} close         日历关闭时触发            可定义页面关闭时的回调事件 | 
|  * @example <u-calendar  :defaultDate="defaultDateMultiple" :show="show" mode="multiple" @confirm="confirm"> | 
|     </u-calendar> | 
|  * */ | 
| export default { | 
|     name: 'u-calendar', | 
|     mixins: [uni.$u.mpMixin, uni.$u.mixin, props], | 
|     components: { | 
|         uHeader, | 
|         uMonth | 
|     }, | 
|     data() { | 
|         return { | 
|             // 需要显示的月份的数组 | 
|             months: [], | 
|             // 在月份滚动区域中,当前视图中月份的index索引 | 
|             monthIndex: 0, | 
|             // 月份滚动区域的高度 | 
|             listHeight: 0, | 
|             // month组件中选择的日期数组 | 
|             selected: [], | 
|             scrollIntoView: '', | 
|             scrollTop:0, | 
|             // 过滤处理方法 | 
|             innerFormatter: (value) => value | 
|         } | 
|     }, | 
|     watch: { | 
|         selectedChange: { | 
|             immediate: true, | 
|             handler(n) { | 
|                 this.setMonth() | 
|             } | 
|         }, | 
|         // 打开弹窗时,设置月份数据 | 
|         show: { | 
|             immediate: true, | 
|             handler(n) { | 
|                 this.setMonth() | 
|             } | 
|         } | 
|     }, | 
|     computed: { | 
|         // 由于maxDate和minDate可以为字符串(2021-10-10),或者数值(时间戳),但是dayjs如果接受字符串形式的时间戳会有问题,这里进行处理 | 
|         innerMaxDate() { | 
|             return uni.$u.test.number(this.maxDate) | 
|                 ? Number(this.maxDate) | 
|                 : this.maxDate | 
|         }, | 
|         innerMinDate() { | 
|             return uni.$u.test.number(this.minDate) | 
|                 ? Number(this.minDate) | 
|                 : this.minDate | 
|         }, | 
|         // 多个条件的变化,会引起选中日期的变化,这里统一管理监听 | 
|         selectedChange() { | 
|             return [this.innerMinDate, this.innerMaxDate, this.defaultDate] | 
|         }, | 
|         subtitle() { | 
|             // 初始化时,this.months为空数组,所以需要特别判断处理 | 
|             if (this.months.length) { | 
|                 return `${this.months[this.monthIndex].year}年${ | 
|                     this.months[this.monthIndex].month | 
|                 }月` | 
|             } else { | 
|                 return '' | 
|             } | 
|         }, | 
|         buttonDisabled() { | 
|             // 如果为range类型,且选择的日期个数不足1个时,让底部的按钮出于disabled状态 | 
|             if (this.mode === 'range') { | 
|                 if (this.selected.length <= 1) { | 
|                     return true | 
|                 } else { | 
|                     return false | 
|                 } | 
|             } else { | 
|                 return false | 
|             } | 
|         } | 
|     }, | 
|     mounted() { | 
|         this.start = Date.now() | 
|         this.init() | 
|     }, | 
|     methods: { | 
|         // 在微信小程序中,不支持将函数当做props参数,故只能通过ref形式调用 | 
|         setFormatter(e) { | 
|             this.innerFormatter = e | 
|         }, | 
|         // month组件内部选择日期后,通过事件通知给父组件 | 
|         monthSelected(e) { | 
|             this.selected = e | 
|             if (!this.showConfirm) { | 
|                 // 在不需要确认按钮的情况下,如果为单选,或者范围多选且已选长度大于2,则直接进行返还 | 
|                 if ( | 
|                     this.mode === 'multiple' || | 
|                     this.mode === 'single' || | 
|                     (this.mode === 'range' && this.selected.length >= 2) | 
|                 ) { | 
|                     this.$emit('confirm', this.selected) | 
|                 } | 
|             } | 
|         }, | 
|         init() { | 
|             // 校验maxDate,不能小于minDate | 
|             if ( | 
|                 this.innerMaxDate && | 
|                 this.innerMinDate && | 
|                 new Date(this.innerMaxDate).getTime() < new Date(this.innerMinDate).getTime() | 
|             ) { | 
|                 return uni.$u.error('maxDate不能小于minDate') | 
|             } | 
|             // 滚动区域的高度 | 
|             this.listHeight = this.rowHeight * 5 + 30 | 
|             this.setMonth() | 
|         }, | 
|         close() { | 
|             this.$emit('close') | 
|         }, | 
|         // 点击确定按钮 | 
|         confirm() { | 
|             if (!this.buttonDisabled) { | 
|                 this.$emit('confirm', this.selected) | 
|             } | 
|         }, | 
|         // 获得两个日期之间的月份数 | 
|         getMonths(minDate, maxDate) { | 
|             const minYear = dayjs(minDate).year() | 
|             const minMonth = dayjs(minDate).month() + 1 | 
|             const maxYear = dayjs(maxDate).year() | 
|             const maxMonth = dayjs(maxDate).month() + 1 | 
|             return (maxYear - minYear) * 12 + (maxMonth - minMonth) + 1 | 
|         }, | 
|         // 设置月份数据 | 
|         setMonth() { | 
|             // 最小日期的毫秒数 | 
|             const minDate = this.innerMinDate || dayjs().valueOf() | 
|             // 如果没有指定最大日期,则往后推3个月 | 
|             const maxDate = | 
|                 this.innerMaxDate || | 
|                 dayjs(minDate) | 
|                     .add(this.monthNum - 1, 'month') | 
|                     .valueOf() | 
|             // 最大最小月份之间的共有多少个月份, | 
|             const months = uni.$u.range( | 
|                 1, | 
|                 this.monthNum, | 
|                 this.getMonths(minDate, maxDate) | 
|             ) | 
|             // 先清空数组 | 
|             this.months = [] | 
|             for (let i = 0; i < months; i++) { | 
|                 this.months.push({ | 
|                     date: new Array( | 
|                         dayjs(minDate).add(i, 'month').daysInMonth() | 
|                     ) | 
|                         .fill(1) | 
|                         .map((item, index) => { | 
|                             // 日期,取值1-31 | 
|                             let day = index + 1 | 
|                             // 星期,0-6,0为周日 | 
|                             const week = dayjs(minDate) | 
|                                 .add(i, 'month') | 
|                                 .date(day) | 
|                                 .day() | 
|                             const date = dayjs(minDate) | 
|                                 .add(i, 'month') | 
|                                 .date(day) | 
|                                 .format('YYYY-MM-DD') | 
|                             let bottomInfo = '' | 
|                             if (this.showLunar) { | 
|                                 // 将日期转为农历格式 | 
|                                 const lunar = Calendar.solar2lunar( | 
|                                     dayjs(date).year(), | 
|                                     dayjs(date).month() + 1, | 
|                                     dayjs(date).date() | 
|                                 ) | 
|                                 bottomInfo = lunar.IDayCn | 
|                             } | 
|                             let config = { | 
|                                 day, | 
|                                 week, | 
|                                 // 小于最小允许的日期,或者大于最大的日期,则设置为disabled状态 | 
|                                 disabled: | 
|                                     dayjs(date).isBefore( | 
|                                         dayjs(minDate).format('YYYY-MM-DD') | 
|                                     ) || | 
|                                     dayjs(date).isAfter( | 
|                                         dayjs(maxDate).format('YYYY-MM-DD') | 
|                                     ), | 
|                                 // 返回一个日期对象,供外部的formatter获取当前日期的年月日等信息,进行加工处理 | 
|                                 date: new Date(date), | 
|                                 bottomInfo, | 
|                                 dot: false, | 
|                                 month: | 
|                                     dayjs(minDate).add(i, 'month').month() + 1 | 
|                             } | 
|                             const formatter = | 
|                                 this.formatter || this.innerFormatter | 
|                             return formatter(config) | 
|                         }), | 
|                     // 当前所属的月份 | 
|                     month: dayjs(minDate).add(i, 'month').month() + 1, | 
|                     // 当前年份 | 
|                     year: dayjs(minDate).add(i, 'month').year() | 
|                 }) | 
|             } | 
|   | 
|         }, | 
|         // 滚动到默认设置的月份 | 
|         scrollIntoDefaultMonth(selected) { | 
|             // 查询默认日期在可选列表的下标 | 
|             const _index = this.months.findIndex(({ | 
|                   year, | 
|                   month | 
|               }) => { | 
|                 month = uni.$u.padZero(month) | 
|                 return `${year}-${month}` === selected | 
|             }) | 
|             if (_index !== -1) { | 
|                 // #ifndef MP-WEIXIN | 
|                 this.$nextTick(() => { | 
|                     this.scrollIntoView = `month-${_index}` | 
|                 }) | 
|                 // #endif | 
|                 // #ifdef MP-WEIXIN | 
|                 this.scrollTop = this.months[_index].top || 0; | 
|                 // #endif | 
|             } | 
|         }, | 
|         // scroll-view滚动监听 | 
|         onScroll(event) { | 
|             // 不允许小于0的滚动值,如果scroll-view到顶了,继续下拉,会出现负数值 | 
|             const scrollTop = Math.max(0, event.detail.scrollTop) | 
|             // 将当前滚动条数值,除以滚动区域的高度,可以得出当前滚动到了哪一个月份的索引 | 
|             for (let i = 0; i < this.months.length; i++) { | 
|                 if (scrollTop >= (this.months[i].top || this.listHeight)) { | 
|                     this.monthIndex = i | 
|                 } | 
|             } | 
|         }, | 
|         // 更新月份的top值 | 
|         updateMonthTop(topArr = []) { | 
|             // 设置对应月份的top值,用于onScroll方法更新月份 | 
|             topArr.map((item, index) => { | 
|                 this.months[index].top = item | 
|             }) | 
|   | 
|             // 获取默认日期的下标 | 
|             if (!this.defaultDate) { | 
|                 // 如果没有设置默认日期,则将当天日期设置为默认选中的日期 | 
|                 const selected = dayjs().format("YYYY-MM") | 
|                 this.scrollIntoDefaultMonth(selected) | 
|                 return | 
|             } | 
|             let selected = dayjs().format("YYYY-MM"); | 
|             // 单选模式,可以是字符串或数组,Date对象等 | 
|             if (!uni.$u.test.array(this.defaultDate)) { | 
|                 selected = dayjs(this.defaultDate).format("YYYY-MM") | 
|             } else { | 
|                 selected = dayjs(this.defaultDate[0]).format("YYYY-MM"); | 
|             } | 
|             this.scrollIntoDefaultMonth(selected) | 
|         } | 
|     } | 
| } | 
| </script> | 
|   | 
| <style lang="scss" scoped> | 
| @import '../../libs/css/components.scss'; | 
|   | 
| .u-calendar { | 
|     &__confirm { | 
|         padding: 7px 18px; | 
|     } | 
| } | 
| </style> |