From 808eddaa3007764afb99aa2281c990d5f602bdf3 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?LAPTOP-D7TKRI82=5C=E9=82=93?= <52643018@qq.com>
Date: Wed, 25 Aug 2021 14:28:49 +0800
Subject: [PATCH] =?UTF-8?q?[=E6=96=B0=E5=A2=9E]=20=E6=97=B6=E9=97=B4?=
 =?UTF-8?q?=E6=97=A5=E6=9C=9F=E9=80=89=E6=8B=A9=E7=BB=84=E4=BB=B6picker?=
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---
 components/lf-timePicker/lf-timePicker.vue | 521 +++++++++++++++++++++
 1 file changed, 521 insertions(+)
 create mode 100644 components/lf-timePicker/lf-timePicker.vue

diff --git a/components/lf-timePicker/lf-timePicker.vue b/components/lf-timePicker/lf-timePicker.vue
new file mode 100644
index 0000000..83fcd79
--- /dev/null
+++ b/components/lf-timePicker/lf-timePicker.vue
@@ -0,0 +1,521 @@
+<template>
+	<view>
+		<view v-if="pickerShow" class="picker" @click="backClick">
+			<view class="main">
+				<view class="header" @touchmove.stop.prevent @click.stop>
+					<view class="btn" @tap="getResult('cancel')" :style="{color: cancelTextColor}">{{cancelText}}</view>
+					<view class="btn" @tap="getResult('confirm')" :style="{color: confirmTextColor}">{{confirmText}}</view>
+				</view>
+				<view class="body" @click.stop @touchmove.stop.prevent>
+					<picker-view :value="valueArr" @change="change" class="picker-view" @pickstart="pickstart"
+						@pickend="pickend">
+						<picker-view-column v-if="!reset && params.year">
+							<view class="column" v-for="(item, index) in years" :key="index">
+								{{ item }}
+								<text class="text" v-if="showTimeTag">年</text>
+							</view>
+						</picker-view-column>
+						<picker-view-column v-if="!reset && params.month">
+							<view class="column" v-for="(item, index) in months" :key="index">
+								{{ formatNumber(item) }}
+								<text class="text" v-if="showTimeTag">月</text>
+							</view>
+						</picker-view-column>
+						<picker-view-column v-if="!reset && params.day">
+							<view class="column" v-for="(item, index) in days" :key="index">
+								{{ formatNumber(item) }}
+								<text class="text" v-if="showTimeTag">日</text>
+							</view>
+						</picker-view-column>
+						<picker-view-column v-if="!reset && params.hour">
+							<view class="column" v-for="(item, index) in hours" :key="index">
+								{{ formatNumber(item) }}
+								<text class="text" v-if="showTimeTag">时</text>
+							</view>
+						</picker-view-column>
+						<picker-view-column v-if="!reset && params.minute">
+							<view class="column" v-for="(item, index) in minutes" :key="index">
+								{{ formatNumber(item) }}
+								<text class="text" v-if="showTimeTag">分</text>
+							</view>
+						</picker-view-column>
+						<picker-view-column v-if="!reset && params.second">
+							<view class="column" v-for="(item, index) in seconds" :key="index">
+								{{ formatNumber(item) }}
+								<text class="text" v-if="showTimeTag">秒</text>
+							</view>
+						</picker-view-column>
+					</picker-view>
+				</view>
+			</view>
+		</view>
+		<slot></slot>
+	</view>
+</template>
+
+<script>
+	export default {
+		name: 'timePicker',
+		props: {
+			value: {
+				default: true,
+				type: Boolean
+			},
+			// picker中需要显示的参数
+			params: {
+				type: Object,
+				default () {
+					return {
+						year: true,
+						month: true,
+						day: true,
+						hour: true,
+						minute: true,
+						second: true,
+						timestamp: false,
+					}
+				}
+			},
+			//左上角文字
+			cancelText: {
+				type: String,
+				default: '取消',
+			},
+
+			//右上角文字
+			confirmText: {
+				type: String,
+				default: '确认',
+			},
+
+			//年月日开始时间
+			beginDate: {
+				type: [String, Number],
+				default: '1990-1-1'
+			},
+
+			//年月日结束时间
+			endDate: {
+				type: [String, Number],
+				default: '2050-12-31'
+			},
+
+			// 默认显示的时间，2025-07-02 || 2025-07-02 13:01:00 || 2025/07/02 || 默认当前时间
+			defaultTime: {
+				type: String,
+				default: function(){
+					let time = new Date();
+					let year = time.getFullYear();
+					let month = time.getMonth() + 1;
+					let day = time.getDate();
+					let hour = time.getHours();
+					let min = time.getMinutes();
+					let ppn = time.getSeconds();
+					let cover = function(par) {
+					  par = par.toString()[1] ? par : "0" + par;
+					  return par;
+					}
+					let str = [year, month, day].map(cover).join('-') +" "+ [hour, min, ppn].map(cover).join(":");
+					return str;
+				}
+			},
+
+			// 是否显示后面的年月日中文提示
+			showTimeTag: {
+				type: Boolean,
+				default: true
+			},
+
+			// 是否允许通过点击背景关闭Picker
+			backClickClose: {
+				type: Boolean,
+				default: true
+			},
+
+			//开始小时
+			hourBegin: {
+				type: [Number, String],
+				default: '0'
+			},
+
+			//结束小时
+			hourEnd: {
+				type: [Number, String],
+				default: '23'
+			},
+
+			//分钟间隔
+			minutesInterval: {
+				type: [Number, String],
+				default: '1'
+			},
+			//左上角文字颜色
+			cancelTextColor: {
+				type: String,
+				default: '#000'
+			},
+			//右上角文字颜色
+			confirmTextColor: {
+				type: String,
+				default: '#1E7DEB'
+			},
+
+		},
+		data() {
+			return {
+				pickerShow: false,
+				years: [],
+				months: [],
+				days: [],
+				hours: [],
+				minutes: [],
+				seconds: [],
+				year: 0,
+				month: 0,
+				day: 0,
+				hour: 0,
+				minute: 0,
+				second: 0,
+				reset: false,
+				valueArr: [],
+				moving: false // 列是否还在滑动中，微信小程序如果在滑动中就点确定，结果可能不准确
+			}
+		},
+		mounted() {
+			this.init()
+		},
+		computed: {
+			currentYear() {
+				return `${this.year}`
+			},
+			currentMonth() {
+				return `${this.month}`
+			},
+			beginYear() {
+				return (new Date(this.beginDate).getFullYear())
+			},
+			endYear() {
+				return (new Date(this.endDate).getFullYear())
+			},
+			beginMonth() {
+				return (new Date(this.beginDate).getMonth() + 1)
+			},
+			endMonth() {
+				return (new Date(this.endDate).getMonth() + 1)
+			},
+			beginDay() {
+				return (new Date(this.beginDate).getDate())
+			},
+			endDay() {
+				return (new Date(this.endDate).getDate())
+			},
+		},
+		watch: {
+			currentYear() {
+				if (this.params.year) this.setMonths()
+			},
+			currentMonth() {
+				this.setDays()
+			},
+			value(val) {
+				this.pickerShow = val;
+			},
+			pickerShow(val) {
+				this.init()
+				this.$emit("input", val);
+			}
+		},
+		methods: {
+			//日期时间处理
+			initTimeValue() {
+				// 格式化时间，在IE浏览器(uni不存在此情况)，无法识别日期间的"-"间隔符号
+				let dfdate = this.defaultTime.replace(/\-/g, '/')
+				let bdate = this.beginDate.replace(/\-/g, '/')
+				let edate = this.endDate.replace(/\-/g, '/')
+				let time = null
+				time = new Date(bdate)
+				if (!!dfdate) {
+					time = new Date(dfdate) > new Date(bdate) ? new Date(dfdate) : new Date(bdate)
+					time = new Date(dfdate) > new Date(edate) ? new Date(edate) : new Date(dfdate)
+				}
+				// 获取年日月时分秒
+				this.year = time.getFullYear()
+				this.month = Number(time.getMonth()) + 1
+				this.day = time.getDate()
+				this.hour = time.getHours()
+				this.minute = time.getMinutes()
+				this.second = time.getSeconds()
+			},
+			// 生成递进的数组
+			generateArray: function(start, end) {
+				// 转为数值格式，否则用户给end-year等传递字符串值时，下面的end+1会导致字符串拼接，而不是相加
+				start = Number(start)
+				end = Number(end)
+				end = end > start ? end : start
+				// 生成数组，获取其中的索引，并剪出来
+				return [...Array(end + 1).keys()].slice(start)
+			},
+			getIndex: function(arr, val) {
+				let index = arr.indexOf(val)
+				// 如果index为-1(即找不到index值)，~(-1)=-(-1)-1=0 (转成相反数在减一)，导致条件不成立
+				return ~index ? index : 0
+			},
+			init() {
+				this.valueArr = []
+				this.reset = false
+				this.initTimeValue()
+				if (this.params.year) {
+					this.valueArr.push(0)
+					this.setYears()
+				}
+				if (this.params.month) {
+					this.valueArr.push(0)
+					this.setMonths()
+				}
+				if (this.params.day) {
+					this.valueArr.push(0)
+					this.setDays()
+				}
+				if (this.params.hour) {
+					this.valueArr.push(0)
+					this.setHours()
+				}
+				if (this.params.minute) {
+					this.valueArr.push(0)
+					this.setMinutes()
+				}
+				if (this.params.second) {
+					this.valueArr.push(0)
+					this.setSeconds()
+				}
+			},
+			setYears() {
+				// 获取年份集合
+				this.years = this.generateArray(this.beginYear, this.endYear)
+				// 设置this.valueArr某一项的值，是为了让picker预选中某一个值
+				this.valueArr.splice(this.valueArr.length - 1, 1, this.getIndex(this.years, this.year))
+			},
+			setMonths() {
+				//结束开始年是同年
+				if (this.endYear == this.beginYear) {
+					this.months = this.generateArray(this.beginMonth, this.endMonth)
+				}
+				//开始年为当前选择年
+				else if (this.beginYear == this.year) {
+					this.months = this.generateArray(this.beginMonth, 12)
+				}
+				//结束年为当前选择年
+				else if (this.endYear == this.year) {
+					this.months = this.generateArray(1, this.endMonth)
+				} else {
+					this.months = this.generateArray(1, 12)
+				}
+				let index = 0
+				if (this.params.year && this.params.month) index = 1
+				else index = 0
+				this.valueArr.splice(index, 1, this.getIndex(this.months, this.month))
+				this.month = this.months[this.valueArr[index]]
+			},
+			setDays() {
+				let totalDays = new Date(this.year, this.month, 0).getDate()
+				//结束开始月份是同月份
+				if (this.beginMonth == this.endMonth) {
+					this.days = this.generateArray(this.beginDay, this.endDay)
+				}
+				//开始月份为当前选择月
+				else if (this.beginMonth == this.month && this.year == this.beginYear) {
+					this.days = this.generateArray(this.beginDay, totalDays)
+				}
+				//结束月份为当前选择月
+				else if (this.endMonth == this.month && this.year == this.endYear) {
+					this.days = this.generateArray(1, this.endDay)
+				}
+				//正常月份
+				else {
+					this.days = this.generateArray(1, totalDays)
+				}
+
+				let index = 0
+				// 这里不能使用类似setMonths()中的this.valueArr.splice(this.valueArr.length - 1, xxx)做法
+				// 因为this.month和this.year变化时，会触发watch中的this.setDays()，导致this.valueArr.length计算有误
+				if (this.params.year && this.params.month) index = 2
+				else if (this.params.month) index = 1
+				else if (this.params.year) index = 1
+				else index = 0
+				// 当月份变化时，会导致日期的天数也会变化，如果原来选的天数大于变化后的天数，则重置为变化后的最大值
+				// 比如原来选中3月31日，调整为2月后，日期变为最大29，这时如果day值继续为31显然不合理，于是将其置为29(picker-column从1开始)
+				if (this.day > this.days.length) this.day = this.days.length
+				this.valueArr.splice(index, 1, this.getIndex(this.days, this.day))
+			},
+			setHours() {
+				let bh = +this.hourBegin
+				let eh = +this.hourEnd
+				this.hours = this.generateArray(bh, eh)
+				this.valueArr.splice(this.valueArr.length - 1, 1, this.getIndex(this.hours, this.hour))
+			},
+			setMinutes() {
+				if (+this.minutesInterval > 1) {
+					let inter = +this.minutesInterval < 60 ? +this.minutesInterval : 59;
+					for (let i = 0; i < 60; i += inter) {
+						this.minutes.push(i);
+					}
+				} else {
+					this.minutes = this.generateArray(0, 59)
+				}
+				this.valueArr.splice(this.valueArr.length - 1, 1, this.getIndex(this.minutes, this.minute))
+			},
+			setSeconds() {
+				this.seconds = this.generateArray(0, 59)
+				this.valueArr.splice(this.valueArr.length - 1, 1, this.getIndex(this.seconds, this.second))
+			},
+			backClick() {
+				this.backClickClose && this.close()
+			},
+			open() {
+				this.pickerShow = true
+			},
+			close() {
+				this.pickerShow = false
+			},
+			// 小于10前面补0，用于月份，日期，时分秒等
+			formatNumber(num) {
+				return +num < 10 ? '0' + num : String(num)
+			},
+			// 标识滑动开始，只有微信小程序才有这样的事件
+			pickstart() {
+				// #ifdef MP-WEIXIN
+				this.moving = true;
+				// #endif
+			},
+			// 标识滑动结束
+			pickend() {
+				// #ifdef MP-WEIXIN
+				this.moving = false;
+				// #endif
+			},
+			// 用户更改picker的列选项
+			change(e) {
+				console.log('change', e);
+				this.valueArr = e.detail.value;
+				let i = 0;
+				// 这里使用i++，是因为this.valueArr数组的长度是不确定长度的，它根据this.params的值来配置长度
+				// 进入if规则，i会加1，保证了能获取准确的值
+				if (this.params.year) this.year = this.years[this.valueArr[i++]];
+				if (this.params.month) this.month = this.months[this.valueArr[i++]];
+				if (this.params.day) this.day = this.days[this.valueArr[i++]];
+				if (this.params.hour) this.hour = this.hours[this.valueArr[i++]];
+				if (this.params.minute) this.minute = this.minutes[this.valueArr[i++]];
+				if (this.params.second) this.second = this.seconds[this.valueArr[i++]];
+			},
+			// 用户点击确定按钮
+			getResult(event = null) {
+				// #ifdef MP-WEIXIN
+				if (this.moving) return;
+				// #endif
+				let result = {};
+				// 只返回用户在this.params中配置了为true的字段
+				if (this.params.year) result.year = this.formatNumber(this.year || 0);
+				if (this.params.month) result.month = this.formatNumber(this.month || 0);
+				if (this.params.day) result.day = this.formatNumber(this.day || 0);
+				if (this.params.hour) result.hour = this.formatNumber(this.hour || 0);
+				if (this.params.minute) result.minute = this.formatNumber(this.minute || 0);
+				if (this.params.second) result.second = this.formatNumber(this.second || 0);
+				if (this.params.timestamp) result.timestamp = this.getTimestamp();
+				if (event) this.$emit(event, result);
+				this.close();
+			},
+			// 获取时间戳
+			getTimestamp() {
+				// yyyy-mm-dd为安卓写法，不支持iOS，需要使用"/"分隔，才能二者兼容
+				let time = this.year + '/' + this.month + '/' + this.day + ' ' + this.hour + ':' + this.minute + ':' + this
+					.second;
+				return new Date(time).getTime() / 1000;
+			}
+		}
+
+	}
+</script>
+
+<style lang="scss" scoped>
+	.picker {
+		/* #ifndef APP-NVUE */
+		display: block;
+		/* #endif */
+		position: fixed;
+		z-index: 10;
+		bottom: 0;
+		left: 0;
+		right: 0;
+		height: 100vh;
+		background: rgba(0, 0, 0, 0.6);
+		display: flex;
+		flex-direction: column;
+		justify-content: flex-end;
+
+		.main {
+			width: 100%;
+			.column{
+				display: flex;
+				justify-content: center;
+				align-items: center;
+			}
+			.header {
+				width: 100%;
+				height: 90rpx;
+				padding: 0 40rpx;
+				display: flex;
+				flex-direction: row;
+				justify-content: space-between;
+				align-items: center;
+				box-sizing: border-box;
+				font-size: 30rpx;
+				background: #fff;
+				position: relative;
+
+
+				&::after {
+					content: '';
+					position: absolute;
+					border-bottom: 1rpx solid #eaeef1;
+					-webkit-transform: scaleY(0.5);
+					transform: scaleY(0.5);
+					bottom: 0;
+					right: 0;
+					left: 0;
+				}
+
+				.btn {
+					padding: 16rpx;
+					box-sizing: border-box;
+					text-align: center;
+					text-decoration: none;
+				}
+			}
+
+			.body {
+				width: 100%;
+				height: 500rpx;
+				overflow: hidden;
+				background-color: #fff;
+
+				.picker-view {
+					height: 100%;
+					box-sizing: border-box;
+
+					.item {
+						display: flex;
+						align-items: center;
+						justify-content: center;
+						font-size: 32rpx;
+						padding: 0 8rpx;
+
+						.text {
+							font-size: 24rpx;
+							padding-left: 8rpx;
+						}
+					}
+				}
+			}
+		}
+	}
+</style>