fny-ugd-palace-uniapp/components/c-datepicker/c-datepicker.vue

<template>
	<view class="picker">
		<!-- 日期选择器 -->
		<view v-if="type!='time'" class="picker-modal">
			<view class="picker-modal-header">
				<!-- <view class="picker-icon picker-icon-zuozuo" :hover-stay-time="100" hover-class="picker-icon-active" @click="onSetYear('-1')"></view> -->
				<view class="date-btn" style="justify-content: flex-start;padding-left: 8px;" :hover-stay-time="100" hover-class="picker-icon-active" @click="onSetMonth('-1')">
					<image class="inner-img" src="/static/c-datepicker/left_btn.png" mode="aspectFit"></image>
				</view>
				<view class="picker-modal-header-title"><text style="margin-left: 0px;">{{title.substr(0,5)}}</text><text style="margin-left: 10px;">{{title.substr(5)}}</text></view>
				<view class="date-btn" style="justify-content: flex-end;padding-right: 8px;" :hover-stay-time="100" hover-class="picker-icon-active" @click="onSetMonth('+1')">
					<image class="inner-img" src="/static/c-datepicker/right_btn.png" mode="aspectFit"></image>
				</view>
				<!-- <view class="picker-icon picker-icon-youyou" :hover-stay-time="100" hover-class="picker-icon-active" @click="onSetYear('+1')"></view> -->
			</view>
			<swiper class="picker-modal-body" :circular="true" :duration="200" :skip-hidden-item-layout="true" :current="calendarIndex" @change="onSwiperChange">
				<swiper-item class="picker-calendar" v-for="(calendar,calendarIndex2) in calendars" :key="calendarIndex2">
					<view class="picker-calendar-view" v-for="(week,index) in weeks" :key="index">
						<view class="picker-calendar-view-item" style="color: #000000;font-weight: bold;">{{week}}</view>
					</view>
					<view class="picker-calendar-view" v-for="(date,dateIndex) in calendar" :key="dateIndex" @click="onSelectDate(date)">
						<!-- 背景样式 -->
						<view v-show="date.bgStyle.type" :class="'picker-calendar-view-'+date.bgStyle.type" :style="{background: date.bgStyle.background}"></view>
						<!-- 正常和选中样式 -->
						<view class="picker-calendar-view-item" :style="{opacity: date.statusStyle.opacity, color: date.statusStyle.color, background: date.statusStyle.background}">
							<text class="text">{{date.title}}</text>
						</view>
						<!-- 小圆点样式 -->
						<view class="picker-calendar-view-dot" :style="{opacity: date.dotStyle.opacity, background: date.dotStyle.background}"></view>
						<!-- 信息样式 -->
						<view v-show="date.tips" class="picker-calendar-view-tips">{{date.tips}}</view>
					</view>
				</swiper-item>
			</swiper>
		</view>
	</view>
</template>

<script>
	/**
	 * 工具函数库
	 */
	const DateTools = {
		/**
		 * 获取公历节日
		 * @param date Date对象
		 */
		getHoliday(date) {
			let holidays = {
				'0101': '元旦',
				'0214': '情人',
				'0308': '妇女',
				'0312': '植树',
				'0401': '愚人',
				'0501': '劳动',
				'0504': '青年',
				'0601': '儿童',
				'0701': '建党',
				'0801': '建军',
				'0903': '抗日',
				'0910': '教师',
				'1001': '国庆',
				'1031': '万圣',
				'1224': '平安',
				'1225': '圣诞'
			};
			let value = this.format(date, 'mmdd');
			if (holidays[value]) return holidays[value];
			return false;
		},
		/**
		 * 解析标准日期格式
		 * @param s 日期字符串
		 * @return 返回Date对象
		 */
		parse: s => new Date(s.replace(/(年|月|-)/g, '/').replace(/(日)/g, '')),
		/**
		 * 比较日期是否为同一天
		 * @param a Date对象
		 * @param b Date对象
		 * @return Boolean
		 */
		isSameDay: (a, b) => a.getMonth() == b.getMonth() && a.getFullYear() == b.getFullYear() && a.getDate() == b.getDate(),
		isBigDay: (a, b) => {
			if(new Date(a.getFullYear(),a.getMonth(),a.getDate()) >= new Date(b.getFullYear(),b.getMonth(),b.getDate())){
				return true
			}else {
				return false
			}
		},
		/**
		 * 格式化Date对象
		 * @param d 日期对象
		 * @param f 格式字符串
		 * @return 返回格式化后的字符串
		 */
		format(d, f) {
			var o = {
				"m+": d.getMonth() + 1,
				"d+": d.getDate(),
				"h+": d.getHours(),
				"i+": d.getMinutes(),
				"s+": d.getSeconds(),
				"q+": Math.floor((d.getMonth() + 3) / 3),
			};
			if (/(y+)/.test(f))
				f = f.replace(RegExp.$1, (d.getFullYear() + "").substr(4 - RegExp.$1.length));
			for (var k in o)
				if (new RegExp("(" + k + ")").test(f))
					f = f.replace(RegExp.$1, (RegExp.$1.length == 1) ? (o[k]) : (("00" + o[k]).substr(("" + o[k]).length)));
			return f;
		},
		/**
		 * 用于format格式化后的反解析
		 * @param s 日期字符串
		 * @param f 格式字符串
		 * @return 返回Date对象
		 */
		inverse(s, f) {
			var o = {
				"y": '',
				"m": '',
				"d": '',
				"h": '',
				"i": '',
				"s": '',
			};
			let d = new Date();
			if (s.length != f.length) return d;
			for (let i in f)
				if (o[f[i]] != undefined) o[f[i]] += s[i];
			if (o.y) d.setFullYear(o.y.length < 4 ? (d.getFullYear() + '').substr(0, 4 - o.y.length) + o.y : o.y);
			o.m && d.setMonth(o.m - 1, 1);
			o.d && d.setDate(o.d - 0);
			o.h && d.setHours(o.h - 0);
			o.i && d.setMinutes(o.i - 0);
			o.s && d.setSeconds(o.s - 0);
			return d;
		},
		/**
		 * 获取日历数组（42天）
		 * @param date 日期对象或日期字符串
		 * @param proc 处理日历(和forEach类似)，传递一个数组中的item
		 * @return Array
		 */
		getCalendar(date, proc) {
			let it = new Date(date),
				calendars = [];
			it.setDate(1);
			it.setDate(it.getDate() - ((it.getDay() == 0 ? 7 : it.getDay()) - 0)); //偏移量
			for (let i = 0; i < 42; i++) {
				let tmp = {
					dateObj: new Date(it),
					title: it.getDate(),
					isOtherMonth: it.getMonth() < date.getMonth() || it.getMonth() > date.getMonth()
				};
				calendars.push(Object.assign(tmp, proc ? proc(tmp) : {}));
				it.setDate(it.getDate() + 1);
			}
			return calendars;
		},
		/**
		 * 获取日期到指定的月份1号(不改变原来的date对象)
		 * @param d Date对象
		 * @param v 指定的月份
		 * @return Date对象
		 */
		getDateToMonth(d, v) {
			let n = new Date(d);
			n.setMonth(v, 1);
			return n;
		},
		/**
		 * 把时间数组转为时间字符串
		 * @param t Array[时,分,秒]
		 * @param showSecinds 是否显示秒
		 * @return 字符串 时:分[:秒]
		 */
		formatTimeArray(t, s) {
			let r = [...t];
			if (!s) r.length = 2;
			r.forEach((v, k) => r[k] = ('0' + v).slice(-2));
			return r.join(':');
		}
	};

	export default {
		props: {
			//颜色
			color: {
				type: String,
				default: '#79A9CE'
			},
			//是否显示秒 针对type为datetime或time时生效
			showSeconds: {
				type: Boolean,
				default: false
			},
			//初始的值
			value: [String, Array],
			//类型date time datetime range rangetime
			type: {
				type: String,
				default: 'date'
			},
			//是否显示
			show: {
				type: Boolean,
				default: false
			},
			//初始格式
			format: {
				type: String,
				default: ''
			},
			//显示公历节日
			showHoliday: {
				type: Boolean,
				default: false
			},
			//显示提示
			showTips: {
				type: Boolean,
				default: false
			},
			//开始文案 针对type为范围选择时生效
			beginText: {
				type: String,
				default: '开始'
			},
			//结束文案 针对type为范围选择时生效
			endText: {
				type: String,
				default: '结束'
			},
			// 开始时间
			beginDate: {
				type: String,
				default: ''
			},
			// 结束时间
			endDate: {
				type: String,
				default: ''
			}
		},
		data() {
			return {
				isShow: false, //是否显示
				isMultiSelect: false, //是否为多选
				isContainTime: false, //是否包含时间
				date: {}, //当前日期对象
				weeks: ["日", "一", "二", "三", "四", "五", "六"],
				title: DateTools.format(new Date(), 'yyyy年mm月'), //标题
				calendars: [[],[],[]], //日历数组
				calendarIndex: 1, //当前日历索引
				checkeds: [], //选中的日期对象集合
				showTimePicker: false, //是否显示时间选择器
				timeValue: [0, 0, 0], //时间选择器的值
				timeType: 'begin', //当前时间选择的类型
				beginTime: [0, 0, 0], //当前所选的开始时间值
				endTime: [0, 0, 0], //当前所选的结束时间值
			};
		},
		methods: {
			//设置值
			setValue(value) {
				if(this.beginDate && this.endDate){
					if(DateTools.isBigDay(new Date(),new Date(this.beginDate)) && DateTools.isBigDay(new Date(this.endDate), new Date())){
						this.date = new Date();
					}else{
						this.date = new Date(this.endDate);
					}
				}else if(this.beginDate){
					if(DateTools.isBigDay(new Date(),new Date(this.beginDate)) ){
						this.date = new Date();
					}else{
						this.date = new Date(this.beginDate);
					}
				}else if(this.endDate){
					if(DateTools.isBigDay(new Date(this.endDate),new Date()) ){
						this.date = new Date();
					}else{
						this.date = new Date(this.endDate);
					}
				}else{
					this.date = new Date();
				}
				this.checkeds = [];
				this.isMultiSelect = this.type.indexOf('range') >= 0;
				this.isContainTime = this.type.indexOf('time') >= 0;
				//将字符串解析为Date对象
				let parseDateStr = (str) => (this.format ? DateTools.inverse(str, this.format) : DateTools.parse(str));
				if (value) {
					if (this.isMultiSelect) {
						Array.isArray(value) && value.forEach((dateStr, index) => {
							let date = parseDateStr(dateStr);
							let time = [date.getHours(), date.getMinutes(), date.getSeconds()];
							if (index == 0) this.beginTime = time;
							else this.endTime = time;
							this.checkeds.push(date);
						});
					} else {
						if (this.type == 'time') {
							let date = parseDateStr('2019/1/1 ' + value);
							this.beginTime = [date.getHours(), date.getMinutes(), date.getSeconds()];
							this.onShowTimePicker('begin');
						} else {
							this.checkeds.push(parseDateStr(value));
							if (this.isContainTime) this.beginTime = [
								this.checkeds[0].getHours(),
								this.checkeds[0].getMinutes(),
								this.checkeds[0].getSeconds()
							];
						}
					}
					if (this.checkeds.length) this.date = new Date(this.checkeds[0]);
				} else {
					if (this.isContainTime) {
						this.beginTime = [this.date.getHours(), this.date.getMinutes(), this.date.getSeconds()];
						if (this.isMultiSelect) this.endTime = [...this.beginTime];
					}
					this.checkeds.push(new Date(this.date));
				}
				if (this.type != 'time') this.refreshCalendars(true);
				else this.onShowTimePicker('begin');
			},
			//改变年份
			onSetYear(value) {
				this.date.setFullYear(this.date.getFullYear() + parseInt(value));
				this.refreshCalendars(true);
			},
			//改变月份
			onSetMonth(value) {
				this.date.setMonth(this.date.getMonth() + parseInt(value));
				this.refreshCalendars(true);
			},
			//时间选择变更
			onTimeChange(e) {
				this.timeValue = e.detail.value;
			},
			//设置时间选择器的显示状态
			onShowTimePicker(type) {
				this.showTimePicker = true;
				this.timeType = type;
				this.timeValue = type == 'begin' ? [...this.beginTime] : [...this.endTime];
			},
			//处理日历
			procCalendar(item) {
				let color = '#ddd';
				let isChoice = false;
				if(this.beginDate && this.endDate){
					if(DateTools.isBigDay(item.dateObj,new Date(this.beginDate)) && DateTools.isBigDay(new Date(this.endDate),item.dateObj) && !item.isOtherMonth){
						color = '#000';
					}
					if(DateTools.isBigDay(item.dateObj,new Date(this.beginDate)) && DateTools.isBigDay(new Date(this.endDate),item.dateObj)){
						isChoice = true;
					}
				}else if(this.beginDate){
					
					if(DateTools.isBigDay(item.dateObj,new Date(this.beginDate)) && !item.isOtherMonth){
						color = '#000';
					}
					
					if(DateTools.isBigDay(item.dateObj,new Date(this.beginDate))){
						isChoice = true;
					}
				}else if(this.endDate){
					if(DateTools.isBigDay(new Date(this.endDate),item.dateObj) && !item.isOtherMonth){
						color = '#000';
					}
					if(DateTools.isBigDay(new Date(this.endDate),item.dateObj)){
						isChoice = true;
					}
				}else{
					if(!item.isOtherMonth){
						color = '#000';
					}
					isChoice = true;
				}
				
				item.isChoice = isChoice;
			
				//定义初始样式
				item.statusStyle = {
					opacity: 1,
					color: color,
					background: 'transparent'
				};
				item.bgStyle = {
					type: '',
					background: 'transparent'
				};
				item.dotStyle = {
					opacity: 1,
					background: 'transparent'
				};
				item.tips = "";
				
				//标记今天的日期
				if (DateTools.isSameDay(new Date(), item.dateObj)) {
					item.statusStyle.color = this.color;
					if (item.isOtherMonth) item.statusStyle.opacity = 0.3;
				}
				//标记选中项
				this.checkeds.forEach(date => {
					if (DateTools.isSameDay(date, item.dateObj)) {
						item.statusStyle.background = this.color;
						item.statusStyle.color = '#fff';
						item.statusStyle.opacity = 1;
						if (this.isMultiSelect && this.showTips) item.tips = this.beginText;
					}
				});
				//节假日或今日的日期标点
				if (item.statusStyle.background != this.color) {
					let holiday = this.showHoliday ? DateTools.getHoliday(item.dateObj) : false;
					if (holiday || DateTools.isSameDay(new Date(), item.dateObj)) {
						item.title = holiday || item.title;
						item.dotStyle.background = this.color;
						if (item.isOtherMonth) item.dotStyle.opacity = 0.2;
					}
				} else {
					item.title = item.dateObj.getDate();
				}
				//有两个日期
				if (this.checkeds.length == 2) {
					if (DateTools.isSameDay(this.checkeds[0], item.dateObj)) { //开始日期
						item.bgStyle.type = 'bgbegin';
					}
					if (DateTools.isSameDay(this.checkeds[1], item.dateObj)) { //结束日期
						if (this.isMultiSelect && this.showTips) item.tips = item.bgStyle.type ? this.beginText + ' / ' + this.endText : this.endText;
						if (!item.bgStyle.type) { //开始日期不等于结束日期
							item.bgStyle.type = 'bgend';
						} else {
							item.bgStyle.type = '';
						}
					}
					if (!item.bgStyle.type && (+item.dateObj > +this.checkeds[0] && +item.dateObj < +this.checkeds[1])) { //中间的日期
						item.bgStyle.type = 'bg';
						item.statusStyle.color = this.color;
					}
					if (item.bgStyle.type) {
						item.bgStyle.background = this.color;
						item.dotStyle.opacity = 1;
						item.statusStyle.opacity = 1;
					}
				}
			},
			//刷新日历
			refreshCalendars(refresh = false) {
				let date = new Date(this.date);
				let before = DateTools.getDateToMonth(date, date.getMonth() - 1);
				let after = DateTools.getDateToMonth(date, date.getMonth() + 1);
				if (this.calendarIndex == 0) {
					if(refresh) this.calendars.splice(0, 1, DateTools.getCalendar(date, this.procCalendar));
					this.calendars.splice(1, 1, DateTools.getCalendar(after, this.procCalendar));
					this.calendars.splice(2, 1, DateTools.getCalendar(before, this.procCalendar));
				} else if (this.calendarIndex == 1) {
					this.calendars.splice(0, 1, DateTools.getCalendar(before, this.procCalendar));
					if(refresh) this.calendars.splice(1, 1, DateTools.getCalendar(date, this.procCalendar));
					this.calendars.splice(2, 1, DateTools.getCalendar(after, this.procCalendar));
				} else if (this.calendarIndex == 2) {
					this.calendars.splice(0, 1, DateTools.getCalendar(after, this.procCalendar));
					this.calendars.splice(1, 1, DateTools.getCalendar(before, this.procCalendar));
					if(refresh) this.calendars.splice(2, 1, DateTools.getCalendar(date, this.procCalendar));
				}
				this.title = DateTools.format(this.date, 'yyyy年mm月');
			},
			//滑块切换
			onSwiperChange(e) {
				this.calendarIndex = e.detail.current;
				let calendar = this.calendars[this.calendarIndex];
				this.date = new Date(calendar[22].dateObj); //取中间一天，保证是当前的月份
				this.refreshCalendars();
			},
			//选中日期
			onSelectDate(date) {
				if(!date.isChoice) {
					uni.showToast({
						title: '禁止时间',
						icon: 'none'
					});
					return false
				}
				if (~this.type.indexOf('range') && this.checkeds.length == 2) this.checkeds = [];
				else if (!(~this.type.indexOf('range')) && this.checkeds.length) this.checkeds = [];
				this.checkeds.push(new Date(date.dateObj));
				this.checkeds.sort((a, b) => a - b); //从小到大排序
				this.calendars.forEach(calendar => {
					calendar.forEach(this.procCalendar); //重新处理
				});
				this.onConfirm(date)
			},
			//时间选择取消
			onCancelTime() {
				this.showTimePicker = false;
				this.type == 'time' && this.onCancel();
			},
			//时间选择确定
			onConfirmTime() {
				if (this.timeType == 'begin') this.beginTime = this.timeValue;
				else this.endTime = this.timeValue;
				this.showTimePicker = false;
				this.type == 'time' && this.onConfirm();
			},
			//取消
			onCancel() {
				this.$emit('cancel', false);
			},
			//确定
			onConfirm(date) {
				const value = DateTools.format(date.dateObj, 'yyyy/mm/dd')
				this.$emit('confirm', value);
				this.$emit('input', value);
				this.$emit('change', value);
			}
		},
		computed: {
			BeginTitle() {
				let value = '未选择';
				if (this.checkeds.length) value = DateTools.format(this.checkeds[0], 'yy/mm/dd');
				return value;
			},
			EndTitle() {
				let value = '未选择';
				if (this.checkeds.length == 2) value = DateTools.format(this.checkeds[1], 'yy/mm/dd');
				return value;
			},
			PickerTimeTitle() {
				return DateTools.formatTimeArray(this.timeValue, this.showSeconds);
			},
			BeginTimeTitle() {
				return this.BeginTitle != '未选择' ? DateTools.formatTimeArray(this.beginTime, this.showSeconds) : '';
			},
			EndTimeTitle() {
				return this.EndTitle != '未选择' ? DateTools.formatTimeArray(this.endTime, this.showSeconds) : '';
			}
		},
		watch: {
			show(newValue, oldValue) {
				newValue && this.setValue(this.value);
				this.isShow = newValue;
			},
			value(newValue, oldValue) {
				setTimeout(()=>{
					this.setValue(newValue);
				}, 0);
			}
		},
		mounted(){
			setTimeout(()=>{
				
				this.setValue(this.value);
			}, 0);
		}
	}
</script>

<style lang="scss" scoped>
	@import './index.scss';
</style>