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熊丽君
2021-09-01 10:55:59 +08:00
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uview-ui/components/u-picker/u-picker.vue Normal file
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<template>
<u-popup :maskCloseAble="maskCloseAble" mode="bottom" :popup="false" v-model="value" length="auto" :safeAreaInsetBottom="safeAreaInsetBottom" @close="close" :z-index="uZIndex">
<view class="u-datetime-picker">
<view class="u-picker-header" @touchmove.stop.prevent="">
<view class="u-btn-picker u-btn-picker--tips"
:style="{ color: cancelColor }"
hover-class="u-opacity"
:hover-stay-time="150"
@tap="getResult('cancel')"
>{{cancelText}}</view>
<view class="u-picker__title">{{ title }}</view>
<view
class="u-btn-picker u-btn-picker--primary"
:style="{ color: moving ? cancelColor : confirmColor }"
hover-class="u-opacity"
:hover-stay-time="150"
@touchmove.stop=""
@tap.stop="getResult('confirm')"
>
{{confirmText}}
</view>
</view>
<view class="u-picker-body">
<picker-view v-if="mode == 'region'" :value="valueArr" @change="change" class="u-picker-view" @pickstart="pickstart" @pickend="pickend">
<picker-view-column v-if="!reset && params.province">
<view class="u-column-item" v-for="(item, index) in provinces" :key="index">
<view class="u-line-1">{{ item.label }}</view>
</view>
</picker-view-column>
<picker-view-column v-if="!reset && params.city">
<view class="u-column-item" v-for="(item, index) in citys" :key="index">
<view class="u-line-1">{{ item.label }}</view>
</view>
</picker-view-column>
<picker-view-column v-if="!reset && params.area">
<view class="u-column-item" v-for="(item, index) in areas" :key="index">
<view class="u-line-1">{{ item.label }}</view>
</view>
</picker-view-column>
</picker-view>
<picker-view v-else-if="mode == 'time'" :value="valueArr" @change="change" class="u-picker-view" @pickstart="pickstart" @pickend="pickend">
<picker-view-column v-if="!reset && params.year">
<view class="u-column-item" v-for="(item, index) in years" :key="index">
{{ item }}
<text class="u-text" v-if="showTimeTag">年</text>
</view>
</picker-view-column>
<picker-view-column v-if="!reset && params.month">
<view class="u-column-item" v-for="(item, index) in months" :key="index">
{{ formatNumber(item) }}
<text class="u-text" v-if="showTimeTag">月</text>
</view>
</picker-view-column>
<picker-view-column v-if="!reset && params.day">
<view class="u-column-item" v-for="(item, index) in days" :key="index">
{{ formatNumber(item) }}
<text class="u-text" v-if="showTimeTag">日</text>
</view>
</picker-view-column>
<picker-view-column v-if="!reset && params.hour">
<view class="u-column-item" v-for="(item, index) in hours" :key="index">
{{ formatNumber(item) }}
<text class="u-text" v-if="showTimeTag">时</text>
</view>
</picker-view-column>
<picker-view-column v-if="!reset && params.minute">
<view class="u-column-item" v-for="(item, index) in minutes" :key="index">
{{ formatNumber(item) }}
<text class="u-text" v-if="showTimeTag">分</text>
</view>
</picker-view-column>
<picker-view-column v-if="!reset && params.second">
<view class="u-column-item" v-for="(item, index) in seconds" :key="index">
{{ formatNumber(item) }}
<text class="u-text" v-if="showTimeTag">秒</text>
</view>
</picker-view-column>
</picker-view>
<picker-view v-else-if="mode == 'selector'" :value="valueArr" @change="change" class="u-picker-view" @pickstart="pickstart" @pickend="pickend">
<picker-view-column v-if="!reset">
<view class="u-column-item" v-for="(item, index) in range" :key="index">
<view class="u-line-1">{{ getItemValue(item, 'selector') }}</view>
</view>
</picker-view-column>
</picker-view>
<picker-view v-else-if="mode == 'multiSelector'" :value="valueArr" @change="change" class="u-picker-view" @pickstart="pickstart" @pickend="pickend">
<picker-view-column v-if="!reset" v-for="(item, index) in range" :key="index">
<view class="u-column-item" v-for="(item1, index1) in item" :key="index1">
<view class="u-line-1">{{ getItemValue(item1, 'multiSelector') }}</view>
</view>
</picker-view-column>
</picker-view>
</view>
</view>
</u-popup>
</template>
<script>
import provinces from '../../libs/util/province.js';
import citys from '../../libs/util/city.js';
import areas from '../../libs/util/area.js';
/**
* picker picker弹出选择器
* @description 此选择器有两种弹出模式：一是时间模式，可以配置年，日，月，时，分，秒参数 二是地区模式，可以配置省，市，区参数
* @tutorial https://www.uviewui.com/components/picker.html
* @property {Object} params 需要显示的参数，见官网说明
* @property {String} mode 模式选择，region-地区类型，time-时间类型（默认time）
* @property {String Number} start-year 可选的开始年份，mode=time时有效（默认1950）
* @property {String Number} end-year 可选的结束年份，mode=time时有效（默认2050）
* @property {Boolean} safe-area-inset-bottom 是否开启底部安全区适配（默认false）
* @property {Boolean} show-time-tag 时间模式时，是否显示后面的年月日中文提示
* @property {String} cancel-color 取消按钮的颜色（默认#606266）
* @property {String} confirm-color 确认按钮的颜色（默认#2979ff）
* @property {String} default-time 默认选中的时间，mode=time时有效
* @property {String} confirm-text 确认按钮的文字
* @property {String} cancel-text 取消按钮的文字
* @property {String} default-region 默认选中的地区，中文形式，mode=region时有效
* @property {String} default-code 默认选中的地区，编号形式，mode=region时有效
* @property {Boolean} mask-close-able 是否允许通过点击遮罩关闭Picker（默认true）
* @property {String Number} z-index 弹出时的z-index值（默认1075）
* @property {Array} default-selector 数组形式，其中每一项表示选择了range对应项中的第几个
* @property {Array} range 自定义选择的数据，mode=selector或mode=multiSelector时有效
* @property {String} range-key 当range参数的元素为对象时，指定Object中的哪个key的值作为选择器显示内容
* @event {Function} confirm 点击确定按钮，返回当前选择的值
* @event {Function} cancel 点击取消按钮，返回当前选择的值
* @example <u-picker v-model="show" mode="time"></u-picker>
*/
export default {
name: 'u-picker',
props: {
// picker中需要显示的参数
params: {
type: Object,
default() {
return {
year: true,
month: true,
day: true,
hour: false,
minute: false,
second: false,
province: true,
city: true,
area: true,
timestamp: true,
};
}
},
// 当mode=selector或者mode=multiSelector时，提供的数组
range: {
type: Array,
default() {
return [];
}
},
// 当mode=selector或者mode=multiSelector时，提供的默认选中的下标
defaultSelector: {
type: Array,
default() {
return [0];
}
},
// 当 range 是一个 Array＜Object＞ 时，通过 range-key 来指定 Object 中 key 的值作为选择器显示内容
rangeKey: {
type: String,
default: ''
},
// 模式选择，region-地区类型，time-时间类型，selector-单列模式，multiSelector-多列模式
mode: {
type: String,
default: 'time'
},
// 年份开始时间
startYear: {
type: [String, Number],
default: 1950
},
// 年份结束时间
endYear: {
type: [String, Number],
default: 2050
},
// "取消"按钮的颜色
cancelColor: {
type: String,
default: '#606266'
},
// "确定"按钮的颜色
confirmColor: {
type: String,
default: '#2979ff'
},
// 默认显示的时间，2025-07-02 || 2025-07-02 13:01:00 || 2025/07/02
defaultTime: {
type: String,
default: ''
},
// 默认显示的地区，可传类似["河北省", "秦皇岛市", "北戴河区"]
defaultRegion: {
type: Array,
default() {
return [];
}
},
// 时间模式时，是否显示后面的年月日中文提示
showTimeTag: {
type: Boolean,
default: true
},
// 默认显示地区的编码，defaultRegion和areaCode同时存在，areaCode优先，可传类似["13", "1303", "130304"]
areaCode: {
type: Array,
default() {
return [];
}
},
safeAreaInsetBottom: {
type: Boolean,
default: false
},
// 是否允许通过点击遮罩关闭Picker
maskCloseAble: {
type: Boolean,
default: true
},
// 通过双向绑定控制组件的弹出与收起
value: {
type: Boolean,
default: false
},
// 弹出的z-index值
zIndex: {
type: [String, Number],
default: 0
},
// 顶部标题
title: {
type: String,
default: ''
},
// 取消按钮的文字
cancelText: {
type: String,
default: '取消'
},
// 确认按钮的文字
confirmText: {
type: String,
default: '确认'
}
},
data() {
return {
years: [],
months: [],
days: [],
hours: [],
minutes: [],
seconds: [],
year: 0,
month: 0,
day: 0,
hour: 0,
minute: 0,
second: 0,
reset: false,
startDate: '',
endDate: '',
valueArr: [],
provinces: provinces,
citys: citys[0],
areas: areas[0][0],
province: 0,
city: 0,
area: 0,
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: {
propsChange() {
// 引用这几个变量，是为了监听其变化
return `${this.mode}-${this.defaultTime}-${this.startYear}-${this.endYear}-${this.defaultRegion}-${this.areaCode}`;
},
regionChange() {
// 引用这几个变量，是为了监听其变化
return `${this.province}-${this.city}`;
},
yearAndMonth() {
return `${this.year}-${this.month}`;
},
uZIndex() {
// 如果用户有传递z-index值，优先使用
return this.zIndex ? this.zIndex : this.$u.zIndex.popup;
}
},
watch: {
propsChange() {
this.reset = true;
setTimeout(() => this.init(), 10);
},
// 如果地区发生变化，为了让picker联动起来，必须重置this.citys和this.areas
regionChange(val) {
this.citys = citys[this.province];
this.areas = areas[this.province][this.city];
},
// watch监听月份的变化，实时变更日的天数，因为不同月份，天数不一样
// 一个月可能有30，31天，甚至闰年2月的29天，平年2月28天
yearAndMonth(val) {
if (this.params.year) this.setDays();
},
// 微信和QQ小程序由于一些奇怪的原因(故同时对所有平台均初始化一遍)，需要重新初始化才能显示正确的值
value(n) {
if (n) {
this.reset = true;
setTimeout(() => this.init(), 10);
}
}
},
methods: {
// 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
},
// 对单列和多列形式的判断是否有传入变量的情况
getItemValue(item, mode) {
// 目前(2020-05-25)uni-app对微信小程序编译有错误，导致v-if为false中的内容也执行，错误导致
// 单列模式或者多列模式中的getItemValue同时被执行，故在这里再加一层判断
if (this.mode == mode) {
return typeof item == 'object' ? item[this.rangeKey] : item;
}
},
// 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);
},
// 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，导致条件不成立
return ~index ? index : 0;
},
//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 fdate = this.defaultTime.replace(/\-/g, '/');
fdate = fdate && fdate.indexOf('/') == -1 ? `2020/01/01 ${fdate}` : fdate;
let time = null;
if (fdate) time = new Date(fdate);
else time = new Date();
// 获取年日月时分秒
this.year = time.getFullYear();
this.month = Number(time.getMonth()) + 1;
this.day = time.getDate();
this.hour = time.getHours();
this.minute = time.getMinutes();
this.second = time.getSeconds();
},
init() {
this.valueArr = [];
this.reset = false;
if (this.mode == 'time') {
this.initTimeValue();
if (this.params.year) {
this.valueArr.push(0);
this.setYears();
}
if (this.params.month) {
this.valueArr.push(0);
this.setMonths();
}
if (this.params.day) {
this.valueArr.push(0);
this.setDays();
}
if (this.params.hour) {
this.valueArr.push(0);
this.setHours();
}
if (this.params.minute) {
this.valueArr.push(0);
this.setMinutes();
}
if (this.params.second) {
this.valueArr.push(0);
this.setSeconds();
}
} else if (this.mode == 'region') {
if (this.params.province) {
this.valueArr.push(0);
this.setProvinces();
}
if (this.params.city) {
this.valueArr.push(0);
this.setCitys();
}
if (this.params.area) {
this.valueArr.push(0);
this.setAreas();
}
} else if (this.mode == 'selector') {
this.valueArr = this.defaultSelector;
} else if (this.mode == 'multiSelector') {
this.valueArr = this.defaultSelector;
this.multiSelectorValue = this.defaultSelector;
}
this.$forceUpdate();
},
// 设置picker的某一列值
setYears() {
// 获取年份集合
this.years = this.generateArray(this.startYear, 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() {
this.months = this.generateArray(1, 12);
this.valueArr.splice(this.valueArr.length - 1, 1, this.getIndex(this.months, this.month));
},
setDays() {
let totalDays = new Date(this.year, this.month, 0).getDate();
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() {
this.hours = this.generateArray(0, 23);
this.valueArr.splice(this.valueArr.length - 1, 1, this.getIndex(this.hours, this.hour));
},
setMinutes() {
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));
},
setProvinces() {
// 判断是否需要province参数
if (!this.params.province) return;
let tmp = '';
let useCode = false;
// 如果同时配置了defaultRegion和areaCode，优先使用areaCode参数
if (this.areaCode.length) {
tmp = this.areaCode[0];
useCode = true;
} else if (this.defaultRegion.length) tmp = this.defaultRegion[0];
else tmp = 0;
// 历遍省份数组匹配
provinces.map((v, k) => {
if (useCode ? v.value == tmp : v.label == tmp) {
tmp = k;
}
});
this.province = tmp;
this.provinces = provinces;
// 设置默认省份的值
this.valueArr.splice(0, 1, this.province);
},
setCitys() {
if (!this.params.city) return;
let tmp = '';
let useCode = false;
if (this.areaCode.length) {
tmp = this.areaCode[1];
useCode = true;
} else if (this.defaultRegion.length) tmp = this.defaultRegion[1];
else tmp = 0;
citys[this.province].map((v, k) => {
if (useCode ? v.value == tmp : v.label == tmp) {
tmp = k;
}
});
this.city = tmp;
this.citys = citys[this.province];
this.valueArr.splice(1, 1, this.city);
},
setAreas() {
if (!this.params.area) return;
let tmp = '';
let useCode = false;
if (this.areaCode.length) {
tmp = this.areaCode[2];
useCode = true;
} else if (this.defaultRegion.length) tmp = this.defaultRegion[2];
else tmp = 0;
areas[this.province][this.city].map((v, k) => {
if (useCode ? v.value == tmp : v.label == tmp) {
tmp = k;
}
});
this.area = tmp;
this.areas = areas[this.province][this.city];
this.valueArr.splice(2, 1, this.area);
},
close() {
this.$emit('input', false);
},
// 用户更改picker的列选项
change(e) {
this.valueArr = e.detail.value;
let i = 0;
if (this.mode == 'time') {
// 这里使用i++，是因为this.valueArr数组的长度是不确定长度的，它根据this.params的值来配置长度
// 进入if规则，i会加1，保证了能获取准确的值
if (this.params.year) this.year = this.years[this.valueArr[i++]];
if (this.params.month) this.month = this.months[this.valueArr[i++]];
if (this.params.day) this.day = this.days[this.valueArr[i++]];
if (this.params.hour) this.hour = this.hours[this.valueArr[i++]];
if (this.params.minute) this.minute = this.minutes[this.valueArr[i++]];
if (this.params.second) this.second = this.seconds[this.valueArr[i++]];
} else if (this.mode == 'region') {
if (this.params.province) this.province = this.valueArr[i++];
if (this.params.city) this.city = this.valueArr[i++];
if (this.params.area) this.area = this.valueArr[i++];
} else if (this.mode == 'multiSelector') {
let index = null;
// 对比前后两个数组，寻找变更的是哪一列，如果某一个元素不同，即可判定该列发生了变化
this.defaultSelector.map((val, idx) => {
if (val != e.detail.value[idx]) index = idx;
});
// 为了让用户对多列变化时，对动态设置其他列的变更
if (index != null) {
this.$emit('columnchange', {
column: index,
index: e.detail.value[index]
});
}
}
},
// 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.mode == 'time') {
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();
} else if (this.mode == 'region') {
if (this.params.province) result.province = provinces[this.province];
if (this.params.city) result.city = citys[this.province][this.city];
if (this.params.area) result.area = areas[this.province][this.city][this.area];
} else if (this.mode == 'selector') {
result = this.valueArr;
} else if (this.mode == 'multiSelector') {
result = this.valueArr;
}
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>
@import '../../libs/css/style.components.scss';
.u-datetime-picker {
position: relative;
z-index: 999;
}
.u-picker-view {
height: 100%;
box-sizing: border-box;
}
.u-picker-header {
width: 100%;
height: 90rpx;
padding: 0 40rpx;
@include vue-flex;
justify-content: space-between;
align-items: center;
box-sizing: border-box;
font-size: 30rpx;
background: #fff;
position: relative;
}
.u-picker-header::after {
content: '';
position: absolute;
border-bottom: 1rpx solid #eaeef1;
-webkit-transform: scaleY(0.5);
transform: scaleY(0.5);
bottom: 0;
right: 0;
left: 0;
}
.u-picker__title {
color: $u-content-color;
}
.u-picker-body {
width: 100%;
height: 500rpx;
overflow: hidden;
background-color: #fff;
}
.u-column-item {
@include vue-flex;
align-items: center;
justify-content: center;
font-size: 32rpx;
color: $u-main-color;
padding: 0 8rpx;
}
.u-text {
font-size: 24rpx;
padding-left: 8rpx;
}
.u-btn-picker {
padding: 16rpx;
box-sizing: border-box;
text-align: center;
text-decoration: none;
}
.u-opacity {
opacity: 0.5;
}
.u-btn-picker--primary {
color: $u-type-primary;
}
.u-btn-picker--tips {
color: $u-tips-color;
}
</style>