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336 lines
12 KiB
Vue
336 lines
12 KiB
Vue
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<template>
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<u-picker
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ref="picker"
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:show="show"
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:closeOnClickOverlay="closeOnClickOverlay"
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:columns="columns"
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:defaultIndex="innerDefaultIndex"
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@close="close"
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@cancel="cancel"
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@confirm="confirm"
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@change="change"
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>
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</u-picker>
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</template>
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<script>
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function times(n, iteratee) {
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let index = -1
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const result = Array(n < 0 ? 0 : n)
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while (++index < n) {
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result[index] = iteratee(index)
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}
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return result
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}
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import props from './props.js';
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import dayjs from '../../libs/util/dayjs.js';
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/**
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* DatetimePicker 时间日期选择器
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* @description 此选择器用于时间日期
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* @tutorial https://www.uviewui.com/components/datetimePicker.html
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* @property {Boolean} show 用于控制选择器的弹出与收起 ( 默认 false )
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* @property {Boolean} showToolbar 是否显示顶部的操作栏 ( 默认 true )
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* @property {String | Number} value 绑定值
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* @property {String} title 顶部标题
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* @property {String} mode 展示格式 mode=date为日期选择，mode=time为时间选择，mode=year-month为年月选择，mode=datetime为日期时间选择 ( 默认 ‘datetime )
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* @property {Number} maxDate 可选的最大时间 默认值为后10年
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* @property {Number} minDate 可选的最小时间 默认值为前10年
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* @property {Number} minHour 可选的最小小时，仅mode=time有效 ( 默认 0 )
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* @property {Number} maxHour 可选的最大小时，仅mode=time有效 ( 默认 23 )
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* @property {Number} minMinute 可选的最小分钟，仅mode=time有效 ( 默认 0 )
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* @property {Number} maxMinute 可选的最大分钟，仅mode=time有效 ( 默认 59 )
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* @property {Function} filter 选项过滤函数
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* @property {Function} formatter 选项格式化函数
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* @property {Boolean} loading 是否显示加载中状态 ( 默认 false )
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* @property {String | Number} itemHeight 各列中，单个选项的高度 ( 默认 44 )
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* @property {String} cancelText 取消按钮的文字 ( 默认 '取消' )
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* @property {String} confirmText 确认按钮的文字 ( 默认 '确认' )
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* @property {String} cancelColor 取消按钮的颜色 ( 默认 '#909193' )
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* @property {String} confirmColor 确认按钮的颜色 ( 默认 '#3c9cff' )
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* @property {String | Number} visibleItemCount 每列中可见选项的数量 ( 默认 5 )
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* @property {Boolean} closeOnClickOverlay 是否允许点击遮罩关闭选择器 ( 默认 false )
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* @property {Array} defaultIndex 各列的默认索引
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* @event {Function} close 关闭选择器时触发
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* @event {Function} confirm 点击确定按钮，返回当前选择的值
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* @event {Function} change 当选择值变化时触发
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* @event {Function} cancel 点击取消按钮
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* @example <u-datetime-picker :show="show" :value="value1" mode="datetime" ></u-datetime-picker>
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*/
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export default {
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name: 'datetime-picker',
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mixins: [uni.$u.mpMixin, uni.$u.mixin, props],
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data() {
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return {
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columns: [],
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innerDefaultIndex: [],
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innerFormatter: (type, value) => value
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}
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},
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watch: {
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show(newValue, oldValue) {
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if (newValue) {
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this.updateColumnValue(this.value)
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}
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},
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propsChange() {
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this.init()
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}
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},
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computed: {
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// 如果以下这些变量发生了变化，意味着需要重新初始化各列的值
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propsChange() {
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return [this.mode, this.maxDate, this.minDate, this.minHour, this.maxHour, this.minMinute, this.maxMinute, this.filter, ]
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}
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},
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mounted() {
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this.init()
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},
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methods: {
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init() {
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this.innerValue = this.correctValue(this.value)
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this.updateColumnValue(this.innerValue)
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},
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// 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
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setFormatter(e) {
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this.innerFormatter = e
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},
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// 关闭选择器
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close() {
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if (this.closeOnClickOverlay) {
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this.$emit('close')
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}
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},
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// 点击工具栏的取消按钮
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cancel() {
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this.$emit('cancel')
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},
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// 点击工具栏的确定按钮
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confirm() {
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this.$emit('confirm', {
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value: this.innerValue,
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mode: this.mode
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})
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},
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// 列发生变化时触发
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change(e) {
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const { indexs, values } = e
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let selectValue = ''
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if(this.mode === 'time') {
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// 根据value各列索引，从各列数组中，取出当前时间的选中值
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selectValue = `${values[0][value[0]]}:${values[1][indexs[1]]}`
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} else {
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// 将选择的值转为数值，比如'03'转为数值的3，'2019'转为数值的2019
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const year = parseInt(values[0][indexs[0]])
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const month = parseInt(values[1][indexs[1]])
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let date = parseInt(values[2] ? values[2][indexs[2]] : 1)
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let hour = 0, minute = 0
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// 此月份的最大天数
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const maxDate = dayjs(`${year}-${month}-${date}`).daysInMonth()
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// year-month模式下，date不会出现在列中，设置为1，为了符合后边需要减1的需求
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if (this.mode === 'year-month') {
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date = 1
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}
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// 不允许超过maxDate值
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date = Math.min(maxDate, date)
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if (this.mode === 'datetime') {
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hour = parseInt(values[3][indexs[3]])
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minute = parseInt(values[4][indexs[4]])
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}
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// 转为时间模式
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selectValue = Number(new Date(year, month - 1, date, hour, minute))
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}
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// 取出准确的合法值，防止超越边界的情况
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selectValue = this.correctValue(selectValue)
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this.innerValue = selectValue
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this.updateColumnValue(selectValue)
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// 发出change时间，value为当前选中的时间戳
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this.$emit('change', {
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value: selectValue,
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// #ifndef MP-WEIXIN
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// 微信小程序不能传递this实例，会因为循环引用而报错
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picker: this.$refs.picker,
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// #endif
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mode: this.mode
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})
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},
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// 更新各列的值，进行补0、格式化等操作
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updateColumnValue(value) {
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this.innerValue = value
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this.updateColumns()
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this.updateIndexs(value)
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},
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// 更新索引
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updateIndexs(value) {
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let values = []
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const formatter = this.formatter || this.innerFormatter
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const padZero = uni.$u.padZero
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if (this.mode === 'time') {
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// 将time模式的时间用:分隔成数组
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const timeArr = value.split(':')
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// 使用formatter格式化方法进行管道处理
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values = [formatter('hour', timeArr[0]), formatter('minute', timeArr[1])]
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} else {
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const date = new Date(value)
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values = [
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formatter('year', `${dayjs(value).year()}`),
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// 月份补0
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formatter('month', padZero(dayjs(value).month() + 1))
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]
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if (this.mode === 'date') {
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// date模式，需要添加天列
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values.push(formatter('day', padZero(dayjs(value).date())))
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}
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if (this.mode === 'datetime') {
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// 数组的push方法，可以写入多个参数
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values.push(formatter('day', padZero(dayjs(value).date())), formatter('hour', padZero(dayjs(value).hour())), formatter('minute', padZero(dayjs(value).minute())))
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}
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}
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// 根据当前各列的所有值，从各列默认值中找到默认值在各列中的索引
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const indexs = this.columns.map((column, index) => {
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// 通过取大值，可以保证不会出现找不到索引的-1情况
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return Math.max(0, column.findIndex(item => item === values[index]))
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})
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this.innerDefaultIndex = indexs
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},
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// 更新各列的值
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updateColumns() {
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const formatter = this.formatter || this.innerFormatter
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// 获取各列的值，并且map后，对各列的具体值进行补0操作
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const results = this.getOriginColumns().map((column) => column.values.map((value) => formatter(column.type, value)))
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this.columns = results
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},
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getOriginColumns() {
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// 生成各列的值
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const results = this.getRanges().map(({ type, range }) => {
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let values = times(range[1] - range[0] + 1, (index) => {
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let value = range[0] + index
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value = type === 'year' ? `${value}` : uni.$u.padZero(value)
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return value
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})
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// 进行过滤
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if (this.filter) {
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values = this.filter(type, values)
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}
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return { type, values }
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})
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return results
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},
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// 通过最大值和最小值生成数组
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generateArray(start, end) {
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return Array.from(new Array(end + 1).keys()).slice(start)
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},
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// 得出合法的时间
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correctValue(value) {
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const isDateMode = this.mode !== 'time'
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if (isDateMode && !uni.$u.test.date(value)) {
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// 如果是日期类型，但是又没有设置合法的当前时间的话，使用最小时间为当前时间
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value = this.minDate
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} else if (!isDateMode && !value) {
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// 如果是时间类型，而又没有默认值的话，就用最小时间
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value = `${uni.$u.padZero(this.minHour)}:uni.$u.padZero(this.minMinute)}`
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}
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// 时间类型
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if (!isDateMode) {
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if (String(value).indexOf(':') === -1) return uni.$u.error('时间错误，请传递如12:24的格式')
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let [hour, minute] = value.split(':')
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// 对时间补零，同时控制在最小值和最大值之间
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hour = uni.$u.padZero(uni.$u.range(this.minHour, this.maxHour, Number(hour)))
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minute = uni.$u.padZero(uni.$u.range(this.minMinute, this.maxMinute, Number(minute)))
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return `${ hour }:${ minute }`
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} else {
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// 如果是日期格式，控制在最小日期和最大日期之间
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value = dayjs(value).isBefore(dayjs(this.minDate)) ? this.minDate : value
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value = dayjs(value).isAfter(dayjs(this.maxDate)) ? this.maxDate : value
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return value
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}
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},
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// 获取每列的最大和最小值
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getRanges() {
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if (this.mode === 'time') {
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return [
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{
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type: 'hour',
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range: [this.minHour, this.maxHour],
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},
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{
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type: 'minute',
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range: [this.minMinute, this.maxMinute],
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},
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];
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}
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const { maxYear, maxDate, maxMonth, maxHour, maxMinute, } = this.getBoundary('max', this.innerValue);
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const { minYear, minDate, minMonth, minHour, minMinute, } = this.getBoundary('min', this.innerValue);
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const result = [
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{
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type: 'year',
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range: [minYear, maxYear],
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},
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{
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type: 'month',
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range: [minMonth, maxMonth],
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},
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{
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type: 'day',
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range: [minDate, maxDate],
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},
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{
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type: 'hour',
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range: [minHour, maxHour],
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},
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{
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type: 'minute',
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range: [minMinute, maxMinute],
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},
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];
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if (this.mode === 'date')
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result.splice(3, 2);
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if (this.mode === 'year-month')
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result.splice(2, 3);
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return result;
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},
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// 根据minDate、maxDate、minHour、maxHour等边界值，判断各列的开始和结束边界值
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getBoundary(type, innerValue) {
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const value = new Date(innerValue)
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const boundary = new Date(this[`${type}Date`])
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const year = dayjs(boundary).year()
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let month = 1
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let date = 1
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let hour = 0
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let minute = 0
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if (type === 'max') {
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month = 12
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// 月份的天数
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date = dayjs(value).daysInMonth()
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hour = 23
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minute = 59
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}
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// 获取边界值，逻辑是：当年达到了边界值(最大或最小年)，就检查月允许的最大和最小值，以此类推
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if (dayjs(value).year() === year) {
|
|||
|
|
month = dayjs(boundary).month() + 1
|
|||
|
|
if (dayjs(value).month() + 1 === month) {
|
|||
|
|
date = dayjs(boundary).date()
|
|||
|
|
if (dayjs(value).date() === date) {
|
|||
|
|
hour = dayjs(boundary).hour()
|
|||
|
|
if (dayjs(value).hour() === hour) {
|
|||
|
|
minute = dayjs(boundary).minute()
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
return {
|
|||
|
|
[`${type}Year`]: year,
|
|||
|
|
[`${type}Month`]: month,
|
|||
|
|
[`${type}Date`]: date,
|
|||
|
|
[`${type}Hour`]: hour,
|
|||
|
|
[`${type}Minute`]: minute
|
|||
|
|
}
|
|||
|
|
},
|
|||
|
|
},
|
|||
|
|
}
|
|||
|
|
</script>
|
|||
|
|
|
|||
|
|
<style lang="scss" scoped>
|
|||
|
|
@import '../../libs/css/components.scss';
|
|||
|
|
</style>
|