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<template>
<view class="u-select">
<u-popup :maskCloseAble="maskCloseAble" mode="bottom" :popup="false" v-model="showPopup" length="auto"
:safeAreaInsetBottom="safeAreaInsetBottom" @close="close" :z-index="uZIndex">
<view class="u-select">
<view class="u-select__header" @touchmove.stop.prevent="">
<view class="u-select__header__cancel u-select__header__btn" :style="{ color: cancelColor }"
hover-class="u-hover-class" :hover-stay-time="150" @tap="close()">
{{cancelText}}
</view>
<view class="u-select__header__title">{{title}}</view>
<view class="u-select__header__confirm u-select__header__btn"
:style="{ color: moving ? cancelColor : confirmColor }" hover-class="u-hover-class"
:hover-stay-time="150" @touchmove.stop="" @tap.stop="handleConfirm()">
{{confirmText}}
</view>
</view>
<view class="search-box_sticky" v-if="filterable">
<view class="search-box">
<u-search :placeholder="$t('app.apply.pleaseKeyword')" height="72" :show-action="false"
bg-color="#f0f2f6" shape="square" v-model="filterText">
</u-search>
</view>
</view>
<view class="u-select__body u-select__body__treeSelect">
<view class="tree-box">
<scroll-view :scroll-y="true" style="height: 100%">
<ly-tree ref="tree" :node-key="realProps.value" :tree-data="options" :props="realProps"
:show-node-icon="true" :filter-node-method="filterNode" child-visible-for-filter-node
check-on-click-node :expand-on-click-node="false" default-expand-all
:show-radio="!multiple" :show-checkbox="multiple" />
</scroll-view>
</view>
</view>
</view>
</u-popup>
</view>
</template>
<script>
const defaultProps = {
label: 'fullName',
value: 'id',
icon: 'icon',
children: 'children'
}
import LyTree from '@/components/ly-tree/ly-tree.vue'
export default {
name: "tree-select",
components: {
LyTree
},
props: {
options: {
type: Array,
default () {
return [];
}
},
filterable: {
type: Boolean,
default: false
},
// 是否显示边框
border: {
type: Boolean,
default: true
},
// 通过双向绑定控制组件的弹出与收起
modelValue: {
type: Boolean,
default: false
},
// "取消"按钮的颜色
cancelColor: {
type: String,
default: '#606266'
},
// "确定"按钮的颜色
confirmColor: {
type: String,
default: '#2979ff'
},
// 弹出的z-index值
zIndex: {
type: [String, Number],
default: 0
},
safeAreaInsetBottom: {
type: Boolean,
default: false
},
// 是否允许通过点击遮罩关闭Picker
maskCloseAble: {
type: Boolean,
default: true
},
defaultValue: {
type: Array,
default: () => []
},
props: {
type: Object,
default: () => ({
label: 'fullName',
value: 'id',
icon: 'icon',
children: 'children'
})
},
// 只能选择最后一层的数值
lastLevel: {
type: Boolean,
default: false
},
// 只能选择最后一层的数值时需要根据lastLevelKey来判断是否最后一层
lastLevelKey: {
type: String,
default: "hasChildren"
},
lastLevelValue: {
default: false
},
multiple: {
type: Boolean,
default: false
},
// 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 {
filterText: '',
moving: false,
showPopup: false
};
},
watch: {
// 在select弹起的时候重新初始化所有数据
modelValue: {
immediate: true,
handler(val) {
this.showPopup = val
if (val) setTimeout(() => this.init(), 10);
}
},
filterText(val) {
this.$refs.tree.filter(val);
}
},
computed: {
uZIndex() {
// 如果用户有传递z-index值优先使用
return this.zIndex ? this.zIndex : this.$u.zIndex.popup;
},
realProps() {
return {
...defaultProps,
...this.props
}
}
},
methods: {
// 标识滑动开始,只有微信小程序才有这样的事件
pickstart() {
// #ifdef MP-WEIXIN
this.moving = true;
// #endif
},
// 标识滑动结束
pickend() {
// #ifdef MP-WEIXIN
this.moving = false;
// #endif
},
filterNode(value, data) {
if (!value) return true;
return data[this.realProps.label].indexOf(value) !== -1;
},
init() {
this.filterText = ''
this.setSelectValue();
},
// 获取默认选中的值
setSelectValue() {
this.$nextTick(() => {
this.$refs.tree.setCheckedKeys(this.defaultValue)
})
},
close() {
this.$emit('close');
},
handleConfirm() {
// #ifdef MP-WEIXIN
if (this.moving) return;
// #endif
let selectValue = this.$refs.tree.getCheckedNodes()
if (this.lastLevel) {
selectValue = selectValue.filter(o => o[this.lastLevelKey] == this.lastLevelValue)
}
if (!selectValue.length) return
this.$emit('confirm', selectValue);
this.close();
}
}
};
</script>
<style scoped lang="scss">
.u-select {
&__action {
position: relative;
line-height: $u-form-item-height;
height: $u-form-item-height;
&__icon {
position: absolute;
right: 20rpx;
top: 50%;
transition: transform .4s;
transform: translateY(-50%);
z-index: 1;
&--reverse {
transform: rotate(-180deg) translateY(50%);
}
}
}
&__hader {
&__title {
color: $u-content-color;
}
}
&--border {
border-radius: 6rpx;
border-radius: 4px;
border: 1px solid $u-form-item-border-color;
}
&__header {
display: flex;
align-items: center;
justify-content: space-between;
height: 80rpx;
padding: 0 40rpx;
}
&__body {
width: 100%;
height: 500rpx;
overflow: hidden;
background-color: #fff;
.tree-box {
height: 100%;
}
&__picker-view {
height: 100%;
box-sizing: border-box;
&__item {
display: flex;
align-items: center;
justify-content: center;
font-size: 32rpx;
color: $u-main-color;
padding: 0 8rpx;
}
}
}
}
</style>

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<template>
<view class="jnpf-tree-select">
<selectBox v-model="innerValue" :disabled='disabled' :placeholder="placeholder" @openSelect="openSelect"
:select-open="selectShow">
</selectBox>
<Tree v-if="selectShow" v-model="selectShow" :default-value="defaultValue" :options="options"
:multiple="multiple" :lastLevel="lastLevel" :lastLevelKey="lastLevelKey" :lastLevelValue="lastLevelValue"
:props="props" :filterable="filterable" @close="handleClose" @confirm="handleConfirm" />
</view>
</template>
<script>
import Tree from './Tree';
import selectBox from '@/components/selectBox'
export default {
name: 'jnpf-tree-select',
components: {
Tree,
selectBox
},
props: {
modelValue: {
default: ''
},
options: {
type: Array,
default: () => []
},
placeholder: {
type: String,
default: '请选择'
},
props: {
type: Object,
default: () => ({
label: 'fullName',
value: 'id',
children: 'children'
})
},
disabled: {
type: Boolean,
default: false
},
filterable: {
type: Boolean,
default: false
},
multiple: {
type: Boolean,
default: false
},
// 只能选择最后一层的数值
lastLevel: {
type: Boolean,
default: false
},
// 只能选择最后一层的数值时需要根据lastLevelKey来判断是否最后一层
lastLevelKey: {
type: String,
default: "hasChildren"
},
lastLevelValue: {
default: false
},
},
data() {
return {
selectShow: false,
innerValue: '',
defaultValue: []
}
},
watch: {
options() {
this.setDefault()
},
modelValue: {
handler(val) {
this.setDefault()
},
immediate: true
}
},
methods: {
setDefault() {
if (!this.modelValue || !this.options) {
this.defaultValue = []
this.innerValue = ''
return
}
const value = this.multiple ? this.modelValue : [this.modelValue]
let label = ''
const loop = (value, list) => {
for (let i = 0; i < list.length; i++) {
let item = list[i]
if (value === item[this.props.value]) {
label += (!label ? '' : ',') + item[this.props.label]
break
}
if (item.children && Array.isArray(item.children) && item.children.length) {
loop(value, item.children)
}
}
}
for (let i = 0; i < value.length; i++) {
loop(value[i], this.options)
}
this.innerValue = label
this.defaultValue = value
},
openSelect() {
if (this.disabled) return
this.selectShow = true
},
handleClose() {
this.selectShow = false
},
handleConfirm(e) {
let label = ''
let value = []
for (let i = 0; i < e.length; i++) {
label += (!label ? '' : ',') + e[i][this.props.label]
value.push(e[i][this.props.value])
}
this.defaultValue = value
this.innerValue = label
if (!this.multiple) {
this.$emit('update:modelValue', value[0])
this.$emit('change', value[0], e[0])
} else {
this.$emit('update:modelValue', value)
this.$emit('change', value, e)
}
}
}
}
</script>
<style lang="scss" scoped>
.jnpf-tree-select {
width: 100%;
}
</style>