【多选picker】uniapp改造uview组件,改造picker为多选,适用uniapp和vue
适用于平板或手机端的picker选择器,具备多选功能完全复制uview-ui的代码origin-component/custom-picker/custom-picker.vue改造了picker-view-column标签下的代码,之前只是文字形式,现在让叶子节点也就是最后一集级以复选框的形式展示,leafLevel是外面传进来的叶子节点的层级增加方法boxItemChange 监听checkb
·
- uview官网:https://www.uviewui.com/components/picker.html
- 在uview的组件的基础上改造
- 使用了uview的picker组件和checkbox组件
- 源码地址1:https://github.com/pengmq0917/mult-picker
- 源码地址2:https://gitcode.net/pengpm/mult-picker
效果如图
复制一分uview的picker组件和checkbox组件的代码
- origin-component/custom-checkbox/custom-checkbox.vue
- 注释掉了uni.$u.error(‘u-checkbox必须搭配u-checkbox-group组件使用’),避免为写在u-checkbox-group组件下控制台报错
<template>
<view
class="u-checkbox"
:style="[checkboxStyle]"
@tap.stop="wrapperClickHandler"
:class="[`u-checkbox-label--${parentData.iconPlacement}`, parentData.borderBottom && parentData.placement === 'column' && 'u-border-bottom']"
>
<view
class="u-checkbox__icon-wrap"
@tap.stop="iconClickHandler"
:class="iconClasses"
:style="[iconWrapStyle]"
>
<slot name="icon">
<u-icon
class="u-checkbox__icon-wrap__icon"
name="checkbox-mark"
:size="elIconSize"
:color="elIconColor"
/>
</slot>
</view>
<text
@tap.stop="labelClickHandler"
:style="{
color: elDisabled ? elInactiveColor : elLabelColor,
fontSize: elLabelSize,
lineHeight: elLabelSize
}"
>{{label}}</text>
</view>
</template>
<script>
import props from './props.js';
/**
* checkbox 复选框
* @description 复选框组件一般用于需要多个选择的场景,该组件功能完整,使用方便
* @tutorial https://uviewui.com/components/checkbox.html
* @property {String | Number | Boolean} name checkbox组件的标示符
* @property {String} shape 形状,square为方形,circle为圆型
* @property {String | Number} size 整体的大小
* @property {Boolean} checked 是否默认选中
* @property {String | Boolean} disabled 是否禁用
* @property {String} activeColor 选中状态下的颜色,如设置此值,将会覆盖parent的activeColor值
* @property {String} inactiveColor 未选中的颜色
* @property {String | Number} iconSize 图标的大小,单位px
* @property {String} iconColor 图标颜色
* @property {String | Number} label label提示文字,因为nvue下,直接slot进来的文字,由于特殊的结构,无法修改样式
* @property {String} labelColor label的颜色
* @property {String | Number} labelSize label的字体大小,px单位
* @property {String | Boolean} labelDisabled 是否禁止点击提示语选中复选框
* @property {Object} customStyle 定义需要用到的外部样式
*
* @event {Function} change 任一个checkbox状态发生变化时触发,回调为一个对象
* @example <u-checkbox v-model="checked" :disabled="false">天涯</u-checkbox>
*/
export default {
name: "custom-checkbox",
mixins: [uni.$u.mpMixin, uni.$u.mixin,props],
data() {
return {
isChecked: false,
// 父组件的默认值,因为头条小程序不支持在computed中使用this.parent.shape的形式
// 故只能使用如此方法
parentData: {
iconSize: 12,
labelDisabled: null,
disabled: null,
shape: 'square',
activeColor: null,
inactiveColor: null,
size: 18,
value: null,
iconColor: null,
placement: 'row',
borderBottom: false,
iconPlacement: 'left'
}
}
},
computed: {
// 是否禁用,如果父组件u-raios-group禁用的话,将会忽略子组件的配置
elDisabled() {
return this.disabled !== '' ? this.disabled : this.parentData.disabled !== null ? this.parentData.disabled : false;
},
// 是否禁用label点击
elLabelDisabled() {
return this.labelDisabled !== '' ? this.labelDisabled : this.parentData.labelDisabled !== null ? this.parentData.labelDisabled :
false;
},
// 组件尺寸,对应size的值,默认值为21px
elSize() {
return this.size ? this.size : (this.parentData.size ? this.parentData.size : 21);
},
// 组件的勾选图标的尺寸,默认12px
elIconSize() {
return this.iconSize ? this.iconSize : (this.parentData.iconSize ? this.parentData.iconSize : 12);
},
// 组件选中激活时的颜色
elActiveColor() {
return this.activeColor ? this.activeColor : (this.parentData.activeColor ? this.parentData.activeColor : '#2979ff');
},
// 组件选未中激活时的颜色
elInactiveColor() {
return this.inactiveColor ? this.inactiveColor : (this.parentData.inactiveColor ? this.parentData.inactiveColor :
'#c8c9cc');
},
// label的颜色
elLabelColor() {
return this.labelColor ? this.labelColor : (this.parentData.labelColor ? this.parentData.labelColor : '#606266')
},
// 组件的形状
elShape() {
return this.shape ? this.shape : (this.parentData.shape ? this.parentData.shape : 'circle');
},
// label大小
elLabelSize() {
return uni.$u.addUnit(this.labelSize ? this.labelSize : (this.parentData.labelSize ? this.parentData.labelSize :
'15'))
},
elIconColor() {
const iconColor = this.iconColor ? this.iconColor : (this.parentData.iconColor ? this.parentData.iconColor :
'#ffffff');
// 图标的颜色
if (this.elDisabled) {
// disabled状态下,已勾选的checkbox图标改为elInactiveColor
return this.isChecked ? this.elInactiveColor : 'transparent'
} else {
return this.isChecked ? iconColor : 'transparent'
}
},
iconClasses() {
let classes = []
// 组件的形状
classes.push('u-checkbox__icon-wrap--' + this.elShape)
if (this.elDisabled) {
classes.push('u-checkbox__icon-wrap--disabled')
}
if (this.isChecked && this.elDisabled) {
classes.push('u-checkbox__icon-wrap--disabled--checked')
}
// 支付宝,头条小程序无法动态绑定一个数组类名,否则解析出来的结果会带有",",而导致失效
// #ifdef MP-ALIPAY || MP-TOUTIAO
classes = classes.join(' ')
// #endif
return classes
},
iconWrapStyle() {
// checkbox的整体样式
const style = {}
style.backgroundColor = this.isChecked && !this.elDisabled ? this.elActiveColor : '#ffffff'
style.borderColor = this.isChecked && !this.elDisabled ? this.elActiveColor : this.elInactiveColor
style.width = uni.$u.addUnit(this.elSize)
style.height = uni.$u.addUnit(this.elSize)
// 如果是图标在右边的话,移除它的右边距
if (this.parentData.iconPlacement === 'right') {
style.marginRight = 0
}
return style
},
checkboxStyle() {
const style = {}
if (this.parentData.borderBottom && this.parentData.placement === 'row') {
uni.$u.error('检测到您将borderBottom设置为true,需要同时将u-checkbox-group的placement设置为column才有效')
}
// 当父组件设置了显示下边框并且排列形式为纵向时,给内容和边框之间加上一定间隔
if (this.parentData.borderBottom && this.parentData.placement === 'column') {
style.paddingBottom = '8px'
}
return uni.$u.deepMerge(style, uni.$u.addStyle(this.customStyle))
}
},
mounted() {
this.init()
},
methods: {
init() {
// 支付宝小程序不支持provide/inject,所以使用这个方法获取整个父组件,在created定义,避免循环引用
this.updateParentData()
if (!this.parent) {
// uni.$u.error('u-checkbox必须搭配u-checkbox-group组件使用')
}
// 设置初始化时,是否默认选中的状态,父组件u-checkbox-group的value可能是array,所以额外判断
if (this.checked) {
this.isChecked = true
} else if (uni.$u.test.array(this.parentData.value)) {
// 查找数组是是否存在this.name元素值
this.isChecked = this.parentData.value.some(item => {
return item === this.name
})
}
},
updateParentData() {
this.getParentData('u-checkbox-group')
},
// 横向两端排列时,点击组件即可触发选中事件
wrapperClickHandler(e) {
this.parentData.iconPlacement === 'right' && this.iconClickHandler(e)
},
// 点击图标
iconClickHandler(e) {
this.preventEvent(e)
// 如果整体被禁用,不允许被点击
if (!this.elDisabled) {
this.setRadioCheckedStatus()
}
},
// 点击label
labelClickHandler(e) {
this.preventEvent(e)
// 如果按钮整体被禁用或者label被禁用,则不允许点击文字修改状态
if (!this.elLabelDisabled && !this.elDisabled) {
this.setRadioCheckedStatus()
}
},
emitEvent() {
this.$emit('change', this.isChecked)
// 尝试调用u-form的验证方法,进行一定延迟,否则微信小程序更新可能会不及时
this.$nextTick(() => {
uni.$u.formValidate(this, 'change')
})
},
// 改变组件选中状态
// 这里的改变的依据是,更改本组件的checked值为true,同时通过父组件遍历所有u-checkbox实例
// 将本组件外的其他u-checkbox的checked都设置为false(都被取消选中状态),因而只剩下一个为选中状态
setRadioCheckedStatus() {
// 将本组件标记为与原来相反的状态
this.isChecked = !this.isChecked
this.emitEvent()
typeof this.parent.unCheckedOther === 'function' && this.parent.unCheckedOther(this)
}
},
watch:{
checked(){
this.isChecked = this.checked
}
}
}
</script>
<style lang="scss" scoped>
@import "../components.scss";
$u-checkbox-icon-wrap-margin-right:6px !default;
$u-checkbox-icon-wrap-font-size:6px !default;
$u-checkbox-icon-wrap-border-width:1px !default;
$u-checkbox-icon-wrap-border-color:#c8c9cc !default;
$u-checkbox-icon-wrap-icon-line-height:0 !default;
$u-checkbox-icon-wrap-circle-border-radius:100% !default;
$u-checkbox-icon-wrap-square-border-radius:3px !default;
$u-checkbox-icon-wrap-checked-color:#fff !default;
$u-checkbox-icon-wrap-checked-background-color:red !default;
$u-checkbox-icon-wrap-checked-border-color:#2979ff !default;
$u-checkbox-icon-wrap-disabled-background-color:#ebedf0 !default;
$u-checkbox-icon-wrap-disabled-checked-color:#c8c9cc !default;
$u-checkbox-label-margin-left:5px !default;
$u-checkbox-label-margin-right:12px !default;
$u-checkbox-label-color:$u-content-color !default;
$u-checkbox-label-font-size:15px !default;
$u-checkbox-label-disabled-color:#c8c9cc !default;
.u-checkbox {
/* #ifndef APP-NVUE */
@include flex(row);
/* #endif */
overflow: hidden;
flex-direction: row;
align-items: center;
&-label--left {
flex-direction: row
}
&-label--right {
flex-direction: row-reverse;
justify-content: space-between
}
&__icon-wrap {
/* #ifndef APP-NVUE */
box-sizing: border-box;
// nvue下,border-color过渡有问题
transition-property: border-color, background-color, color;
transition-duration: 0.2s;
/* #endif */
color: $u-content-color;
@include flex;
align-items: center;
justify-content: center;
color: transparent;
text-align: center;
margin-right: $u-checkbox-icon-wrap-margin-right;
font-size: $u-checkbox-icon-wrap-font-size;
border-width: $u-checkbox-icon-wrap-border-width;
border-color: $u-checkbox-icon-wrap-border-color;
border-style: solid;
/* #ifdef MP-TOUTIAO */
// 头条小程序兼容性问题,需要设置行高为0,否则图标偏下
&__icon {
line-height: $u-checkbox-icon-wrap-icon-line-height;
}
/* #endif */
&--circle {
border-radius: $u-checkbox-icon-wrap-circle-border-radius;
}
&--square {
border-radius: $u-checkbox-icon-wrap-square-border-radius;
}
&--checked {
color: $u-checkbox-icon-wrap-checked-color;
background-color: $u-checkbox-icon-wrap-checked-background-color;
border-color: $u-checkbox-icon-wrap-checked-border-color;
}
&--disabled {
background-color: $u-checkbox-icon-wrap-disabled-background-color !important;
}
&--disabled--checked {
color: $u-checkbox-icon-wrap-disabled-checked-color !important;
}
}
&__label {
/* #ifndef APP-NVUE */
word-wrap: break-word;
/* #endif */
margin-left: $u-checkbox-label-margin-left;
margin-right: $u-checkbox-label-margin-right;
color: $u-checkbox-label-color;
font-size: $u-checkbox-label-font-size;
&--disabled {
color: $u-checkbox-label-disabled-color;
}
}
}
</style>
- origin-component/custom-checkbox/props.js
- 完全复制uview-ui的代码
export default {
props: {
// checkbox的名称
name: {
type: [String, Number, Boolean],
default: uni.$u.props.checkbox.name
},
// 形状,square为方形,circle为圆型
shape: {
type: String,
default: uni.$u.props.checkbox.shape
},
// 整体的大小
size: {
type: [String, Number],
default: uni.$u.props.checkbox.size
},
// 是否默认选中
checked: {
type: Boolean,
default: uni.$u.props.checkbox.checked
},
// 是否禁用
disabled: {
type: [String, Boolean],
default: uni.$u.props.checkbox.disabled
},
// 选中状态下的颜色,如设置此值,将会覆盖parent的activeColor值
activeColor: {
type: String,
default: uni.$u.props.checkbox.activeColor
},
// 未选中的颜色
inactiveColor: {
type: String,
default: uni.$u.props.checkbox.inactiveColor
},
// 图标的大小,单位px
iconSize: {
type: [String, Number],
default: uni.$u.props.checkbox.iconSize
},
// 图标颜色
iconColor: {
type: String,
default: uni.$u.props.checkbox.iconColor
},
// label提示文字,因为nvue下,直接slot进来的文字,由于特殊的结构,无法修改样式
label: {
type: [String, Number],
default: uni.$u.props.checkbox.label
},
// label的字体大小,px单位
labelSize: {
type: [String, Number],
default: uni.$u.props.checkbox.labelSize
},
// label的颜色
labelColor: {
type: String,
default: uni.$u.props.checkbox.labelColor
},
// 是否禁止点击提示语选中复选框
labelDisabled: {
type: [String, Boolean],
default: uni.$u.props.checkbox.labelDisabled
}
}
}
- origin-component/custom-picker/custom-picker.vue
-
改造了picker-view-column标签下的代码,之前只是文字形式,现在让叶子节点也就是最后一集级以复选框的形式展示,leafLevel是外面传进来的叶子节点的层级
-
增加方法boxItemChange 监听checkbox的选择状态,并调用父组件的boxChange方法
<template>
<u-popup :show="show" @close="closeHandler">
<view class="u-picker">
<u-toolbar v-if="showToolbar" :cancelColor="cancelColor" :confirmColor="confirmColor"
:cancelText="cancelText" :confirmText="confirmText" :title="title" :titleColor="titleColor"
@cancel="cancel" @confirm="confirm"></u-toolbar>
<picker-view class="u-picker__view" :indicatorStyle="`height: ${$u.addUnit(itemHeight)}`"
:value="innerIndex" :immediateChange="immediateChange" :style="{
height: `${$u.addUnit(visibleItemCount * itemHeight)}`
}" @change="changeHandler">
<picker-view-column v-for="(item, index) in innerColumns" :key="index" class="u-picker__view__column">
<block v-if="index != leafLevel">
<text v-if="$u.test.array(item)" class="u-picker__view__column__item u-line-1"
:class="item1.class" v-for="(item1, index1) in item" :key="index1" :style="{
height: $u.addUnit(itemHeight),
lineHeight: $u.addUnit(itemHeight),
fontWeight: index1 === innerIndex[index] ? 'bold' : 'normal'
}">{{ getItemText(item1) }}</text>
</block>
<block v-else>
<custom-checkbox class="u-line-1 checkbox-container" :customStyle="{display:'flex !important'}"
v-for="(item1, index1) in item" :key="item1.label" :label="item1.label" :name="item1.label" :checked="isBoxChecked(item1)"
@change="boxItemChange(item1,$event)">
</custom-checkbox>
</block>
</picker-view-column>
</picker-view>
<view v-if="loading" class="u-picker--loading">
<u-loading-icon mode="circle"></u-loading-icon>
</view>
</view>
</u-popup>
</template>
<script>
/**
* u-picker
* @description 选择器
* @property {Boolean} show 是否显示picker弹窗(默认 false )
* @property {Boolean} showToolbar 是否显示顶部的操作栏(默认 true )
* @property {String} title 顶部标题
* @property {Array} columns 对象数组,设置每一列的数据
* @property {Boolean} loading 是否显示加载中状态(默认 false )
* @property {String | Number} itemHeight 各列中,单个选项的高度(默认 44 )
* @property {String} cancelText 取消按钮的文字(默认 '取消' )
* @property {String} confirmText 确认按钮的文字(默认 '确定' )
* @property {String} cancelColor 取消按钮的颜色(默认 '#909193' )
* @property {String} confirmColor 确认按钮的颜色(默认 '#3c9cff' )
* @property {String | Number} visibleItemCount 每列中可见选项的数量(默认 5 )
* @property {String} keyName 选项对象中,需要展示的属性键名(默认 'text' )
* @property {Boolean} closeOnClickOverlay 是否允许点击遮罩关闭选择器(默认 false )
* @property {Array} defaultIndex 各列的默认索引
* @property {Boolean} immediateChange 是否在手指松开时立即触发change事件(默认 false )
* @property {Number} leafLevel 叶子节点的层级
* @event {Function} close 关闭选择器时触发
* @event {Function} cancel 点击取消按钮触发
* @event {Function} change 当选择值变化时触发
* @event {Function} boxChange 当最后一级多选框值变化时触发
* @event {Function} confirm 点击确定按钮,返回当前选择的值
*/
import props from './props.js';
import CustomCheckbox from '../custom-checkbox/custom-checkbox.vue'
export default {
name: 'custom-picker',
mixins: [uni.$u.mpMixin, uni.$u.mixin, props],
components:{
CustomCheckbox
},
data() {
return {
// 上一次选择的列索引
lastIndex: [],
// 索引值 ,对应picker-view的value
innerIndex: [],
// 各列的值
innerColumns: [],
// 上一次的变化列索引
columnIndex: 0,
checkedBoxs: []
}
},
watch: {
// 监听默认索引的变化,重新设置对应的值
defaultIndex: {
immediate: true,
handler(n) {
this.setIndexs(n, true)
}
},
// 监听columns参数的变化
columns: {
immediate: true,
handler(n) {
this.setColumns(n)
}
},
},
methods: {
isBoxChecked(item){
return this.checkedBoxs.includes(item)
},
// 获取item需要显示的文字,判别为对象还是文本
getItemText(item) {
if (uni.$u.test.object(item)) {
return item[this.keyName]
} else {
return item
}
},
// 关闭选择器
closeHandler() {
if (this.closeOnClickOverlay) {
this.$emit('close')
}
},
// 点击工具栏的取消按钮
cancel() {
this.$emit('cancel')
},
// 点击工具栏的确定按钮
confirm() {
this.$emit('confirm', {
indexs: this.innerIndex,
value: this.innerColumns.map((item, index) => item[this.innerIndex[index]]),
values: this.innerColumns,
checkedBoxs: this.checkedBoxs
})
},
// 选择器某一列的数据发生变化时触发
changeHandler(e) {
const {
value
} = e.detail
let index = 0,
columnIndex = 0
// 通过对比前后两次的列索引,得出当前变化的是哪一列
for (let i = 0; i < value.length; i++) {
let item = value[i]
if (item !== (this.lastIndex[i] || 0)) { // 把undefined转为合法假值0
// 设置columnIndex为当前变化列的索引
columnIndex = i
// index则为变化列中的变化项的索引
index = item
break // 终止循环,即使少一次循环,也是性能的提升
}
}
this.columnIndex = columnIndex
const values = this.innerColumns
// 将当前的各项变化索引,设置为"上一次"的索引变化值
this.setLastIndex(value)
this.setIndexs(value)
this.$emit('change', {
// #ifndef MP-WEIXIN || MP-LARK
// 微信小程序不能传递this,会因为循环引用而报错
picker: this,
// #endif
value: this.innerColumns.map((item, index) => item[value[index]]),
index,
indexs: value,
// values为当前变化列的数组内容
values,
columnIndex,
detail: this.lastIndex
})
},
// 设置index索引,此方法可被外部调用设置
setIndexs(index, setLastIndex) {
this.innerIndex = uni.$u.deepClone(index)
if (setLastIndex) {
this.setLastIndex(index)
}
},
// 记录上一次的各列索引位置
setLastIndex(index) {
// 当能进入此方法,意味着当前设置的各列默认索引,即为“上一次”的选中值,需要记录,是因为changeHandler中
// 需要拿前后的变化值进行对比,得出当前发生改变的是哪一列
this.lastIndex = uni.$u.deepClone(index)
},
// 设置对应列选项的所有值
setColumnValues(columnIndex, values) {
// 替换innerColumns数组中columnIndex索引的值为values,使用的是数组的splice方法
this.innerColumns.splice(columnIndex, 1, values)
// 拷贝一份原有的innerIndex做临时变量,将大于当前变化列的所有的列的默认索引设置为0
let tmpIndex = uni.$u.deepClone(this.innerIndex)
for (let i = 0; i < this.innerColumns.length; i++) {
if (i > this.columnIndex) {
tmpIndex[i] = 0
}
}
// 一次性赋值,不能单个修改,否则无效
this.setIndexs(tmpIndex)
},
// 获取对应列的所有选项
getColumnValues(columnIndex) {
// 进行同步阻塞,因为外部得到change事件之后,可能需要执行setColumnValues更新列的值
// 索引如果在外部change的回调中调用getColumnValues的话,可能无法得到变更后的列值,这里进行一定延时,保证值的准确性
(async () => {
await uni.$u.sleep()
})()
return this.innerColumns[columnIndex]
},
// 设置整体各列的columns的值
setColumns(columns) {
this.innerColumns = uni.$u.deepClone(columns)
// 如果在设置各列数据时,没有被设置默认的各列索引defaultIndex,那么用0去填充它,数组长度为列的数量
if (this.innerIndex.length === 0) {
this.innerIndex = new Array(columns.length).fill(0)
}
},
// 获取各列选中值对应的索引
getIndexs() {
return this.innerIndex
},
// 获取各列选中的值
getValues() {
// 进行同步阻塞,因为外部得到change事件之后,可能需要执行setColumnValues更新列的值
// 索引如果在外部change的回调中调用getValues的话,可能无法得到变更后的列值,这里进行一定延时,保证值的准确性
(async () => {
await uni.$u.sleep()
})()
return this.innerColumns.map((item, index) => item[this.innerIndex[index]])
},
boxItemChange(data,event) {
if(event){
this.checkedBoxs.push(data)
}else{
this.checkedBoxs.splice(this.checkedBoxs.indexOf(data),1);
}
this.$emit('boxChange', this.checkedBoxs)
// console.log(this.checkedBoxs)
}
},
}
</script>
<style lang="scss" scoped>
@import "../components.scss";
.u-picker {
position: relative;
&__view {
&__column {
@include flex;
flex: 1;
justify-content: center;
&__item {
@include flex;
justify-content: center;
align-items: center;
font-size: 16px;
text-align: center;
/* #ifndef APP-NVUE */
display: block;
/* #endif */
color: $u-main-color;
&--disabled {
/* #ifndef APP-NVUE */
cursor: not-allowed;
/* #endif */
opacity: 0.35;
}
}
}
}
&--loading {
position: absolute;
top: 0;
right: 0;
left: 0;
bottom: 0;
@include flex;
justify-content: center;
align-items: center;
background-color: rgba(255, 255, 255, 0.87);
z-index: 1000;
}
}
.checkbox-container{
justify-content: center;
align-items: center;
}
</style>
- origin-component/custom-picker/props.js
- 复制uview-ui的代码,加了一个leafLevel属性
export default {
props: {
// 是否展示picker弹窗
show: {
type: Boolean,
default: uni.$u.props.picker.show
},
// 是否展示顶部的操作栏
showToolbar: {
type: Boolean,
default: uni.$u.props.picker.showToolbar
},
// 顶部标题
title: {
type: String,
default: uni.$u.props.picker.title
},
// 对象数组,设置每一列的数据
columns: {
type: Array,
default: uni.$u.props.picker.columns
},
titleColor: {
type: String,
default:"#1e1e1e"
},
// 是否显示加载中状态
loading: {
type: Boolean,
default: uni.$u.props.picker.loading
},
// 各列中,单个选项的高度
itemHeight: {
type: [String, Number],
default: uni.$u.props.picker.itemHeight
},
// 取消按钮的文字
cancelText: {
type: String,
default: uni.$u.props.picker.cancelText
},
// 确认按钮的文字
confirmText: {
type: String,
default: uni.$u.props.picker.confirmText
},
// 取消按钮的颜色
cancelColor: {
type: String,
default: uni.$u.props.picker.cancelColor
},
// 确认按钮的颜色
confirmColor: {
type: String,
default: uni.$u.props.picker.confirmColor
},
// 每列中可见选项的数量
visibleItemCount: {
type: [String, Number],
default: uni.$u.props.picker.visibleItemCount
},
// 选项对象中,需要展示的属性键名
keyName: {
type: String,
default: uni.$u.props.picker.keyName
},
// 是否允许点击遮罩关闭选择器
closeOnClickOverlay: {
type: Boolean,
default: uni.$u.props.picker.closeOnClickOverlay
},
// 各列的默认索引
defaultIndex: {
type: Array,
default: uni.$u.props.picker.defaultIndex
},
// 是否在手指松开时立即触发 change 事件。若不开启则会在滚动动画结束后触发 change 事件,只在微信2.21.1及以上有效
immediateChange: {
type: Boolean,
default: uni.$u.props.picker.immediateChange
},
leafLevel:{
type: Number,
default: 0
}
}
}
- origin-component/components.scss
- 完全复制uview-ui的代码
@import "./mixin.scss";
/* #ifndef APP-NVUE */
// 由于uView是基于nvue环境进行开发的,此环境中普通元素默认为flex-direction: column;
// 所以在非nvue中,需要对元素进行重置为flex-direction: column; 否则可能会表现异常
view, scroll-view, swiper-item {
display: flex;
flex-direction: column;
flex-shrink: 0;
flex-grow: 0;
flex-basis: auto;
align-items: stretch;
align-content: flex-start;
}
/* #endif */
- origin-component/mixin.scss
- 完全复制uview-ui的代码
// 通过scss的mixin功能,把原来需要写4行的css,变成一行
// 目的是保持代码干净整洁,不至于在nvue下,到处都要写display:flex的条件编译
@mixin flex($direction: row) {
/* #ifndef APP-NVUE */
display: flex;
/* #endif */
flex-direction: $direction;
}
- constants.js
picker内容的一些数据
const factorStructure1 = [
{
label: "基础参数",
value: 1,
level:0,
icon:'base_params.png',
children: [
{
label: "电量",
value: 1,
level:1,
children: [
{
label: "A相电流",
value: 12,
level:2
},
{
label: "B相电流",
value: 13,
level:2
},
{
label: "C相电流",
value: 14,
level:2
}
],
},
{
label: "电压",
value: 2,
level:1,
children: [
{
label: "A相电压",
value: 9,
level:2
},
{
label: "B相电压",
value: 10,
level:2
},
{
label: "C相电压",
value: 11,
level:2
}
],
},
{
label: "有功功率",
value: 3,
level:1,
children: [
{
label: "总有功功率",
value: 18
},
{
label: "有功功率1",
value: 19
},
{
label: "有功功率2",
value: 20
},
{
label: "有功功率3",
value: 21
}
],
},
{
label: "无功功率",
value: 4,
level:1,
children: [
{
label: "无有功功率",
value: 22,
level:2
},
{
label: "无功功率1",
value: 23,
level:2
},
{
label: "无功功率2",
value: 24,
level:2
},
{
label: "无功功率3",
value: 25,
level:2
}
],
},
{
label: "功率因素",
value: 5,
level:1,
children: [
{
label: "总功率因素",
value: 26,
level:2
},
{
label: "功率因素1",
value: 27,
level:2
},
{
label: "功率因素2",
value: 28,
level:2
},
{
label: "功率因素3",
value: 29,
level:2
}
],
},
{
label: "电网频率",
value: 6,
level:1,
children: [
{
label: "电网频率",
value: 15,
level:2
}
],
},
],
},
{
label: "电量",
value: 2,
level:0,
icon:'electricity.png',
children: [
{
label: "有功电量",
value: 1,
level:1,
children: [
{
label: "正向有功总电能",
value: 1,
level:2
},
{
label: "反向有功总电能",
value: 2,
level:2
}
],
},
{
label: "无功电量",
value: 2,
level:1,
children: [
{
label: "组合无功1总电能",
value: 3,
level:2
},
{
label: "组合无功2总电能",
value: 4,
level:2
},
{
label: "(当前)第一象限无功总电能",
value: 5,
level:2
},
{
label: "(当前)第二象限无功总电能",
value: 6,
level:2
},
{
label: "(当前)第三象限无功总电能",
value: 7,
level:2
},
{
label: "(当前)第四象限无功总电能",
value: 8,
level:2
},
],
},
{
label: "需量",
value: 3,
level:1,
children: [
{
label: "当前有功需量",
value: 16,
level:2
},
{
label: "当前无功需量",
value: 17,
level:2
},
],
},
],
},
]
export {
factorStructure1
}
- index.vue
<template>
<view class="container">
<custom-picker :closeOnClickOverlay="false" :show="isShow" :columns="columns" :title="title || '请选择因子'" :loading="loading" :leafLevel="2"
keyName="label" titleColor="#ff5757" ref="factorPicker" @confirm="confirm" @change="changeHandler" @boxChange="boxChange" @cancel="cancel">
</custom-picker>
</view>
</template>
<script>
import {
factorStructure1
} from "./constant";
import CustomPicker from './origin-component/custom-picker/custom-picker.vue'
export default {
components:{
CustomPicker
},
props: {},
data() {
return {
loading: false,
isShow: false,
columns: [factorStructure1,factorStructure1[0].children,factorStructure1[0].children[0].children],
title: '',
preSelectedData:[] // 记录上次选择的结果,方便取消的时候回滚数据
};
},
watch: {
isShow(val) {
if (!val) {
this.$emit('close')
}
}
},
methods: {
show() {
this.isShow = true
// const temp = {
// label: "请选择",
// id: -1,
// hasChildren: false,
// class: "test-select"
// }
// this.columns.forEach(item=>{
// item.splice(0, 0, temp)
// })
// if (this.$refs.factorPicker.innerColumns.length === 0) {
// this.loading = true
// // this.loadData()
// const temp = [{
// label: "请选择",
// id: -1,
// hasChildren: false,
// class: "test-select"
// },
// ]
// this.$refs.factorPicker.setColumnValues(0, temp)
// this.columns.splice(0, 1, temp)
// this.loading = false
// } else {
// if (this.reset) {
// this.$refs.factorPicker.innerColumns.splice(1)
// this.$refs.factorPicker.innerIndex = [0]
// this.$refs.factorPicker.setIndexs([0], true)
// }
// }
},
confirm(e) {
this.isShow = false
let data = e.checkedBoxs
this.changeTitle(data)
this.preSelectedData = []
data.forEach(item=>{
this.preSelectedData.push(item)
})
this.$emit("factorsChange",this.title,data)
console.log("确定了")
},
cancel(){
this.isShow = false;
let temp = []
this.preSelectedData.forEach(item=>{
temp.push(item)
})
this.$refs.factorPicker.checkedBoxs = temp
this.changeTitle(temp)
},
changeHandler(e) {
const {
columnIndex,
value,
values, // values为当前变化列的数组内容
index,
// 微信小程序无法将picker实例传出来,只能通过ref操作
picker = this.$refs.factorPicker
} = e
// console.log(e)
// this.columns.splice()
if(columnIndex < 2){
picker.setColumnValues(columnIndex+1, values[columnIndex][index].children)
for(let i = columnIndex+1;i < 2; i++){
picker.setColumnValues(i+1, values[i][0].children)
}
}
},
boxChange(data){
this.changeTitle(data)
},
changeTitle(data){
let result = ''
if(data.length == 0){
result = ''
}else if(data.length == 1){
result = data[0].label
}else{
result = `选择了${data.length}个因子`
}
this.title = result
}
}
}
</script>
<style lang="scss">
</style>
- example.vue
- 使用方法
<template>
<view class="container">
<u--input v-model="factorsSelectedResult" placeholder="请选择因子" suffixIcon="arrow-down"
readonly suffixIconStyle="color: #909399" @click.native.stop='showFactorSelector'>
</u--input>
<vr-factor-selector ref='factorSelector' @factorsChange="factorsChange"></vr-factor-selector>
</view>
</template>
<script>
import VrFactorSelector from './index.vue'
export default {
components: {
VrFactorSelector
},
data(){
return{
factorsSelectedResult:''
}
},
methods: {
showFactorSelector() {
this.$refs.factorSelector.show()
},
factorsChange(result,data){
console.log(result,data)
this.factorsSelectedResult = result
}
}
}
</script>
<style>
</style>
更多推荐
已为社区贡献1条内容
所有评论(0)