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<template>
<view class="uni-data-tree">
<view class="uni-data-tree-input" @click="handleInput">
<slot :options="options" :data="inputSelected" :error="errorMessage">
<view class="input-value" :class="{'input-value-border': border}">
<text v-if="errorMessage" class="selected-area error-text">{{errorMessage}}</text>
<view v-else-if="loading && !isOpened" class="selected-area">
<uni-load-more class="load-more" :contentText="loadMore" status="loading"></uni-load-more>
</view>
<scroll-view v-else-if="inputSelected.length" class="selected-area" scroll-x="true">
<view class="selected-list">
<view class="selected-item" v-for="(item,index) in inputSelected" :key="index">
<text>{{item.text}}</text><text v-if="index<inputSelected.length-1" class="input-split-line">{{split}}</text>
</view>
</view>
</scroll-view>
<text v-else class="selected-area placeholder">{{placeholder}}</text>
<view class="arrow-area" v-if="!readonly">
<view class="input-arrow"></view>
</view>
</view>
</slot>
</view>
<view class="uni-data-tree-cover" v-if="isOpened" @click="handleClose"></view>
<view class="uni-data-tree-dialog" v-if="isOpened">
<view class="dialog-caption">
<view class="title-area">
<text class="dialog-title">{{popupTitle}}</text>
</view>
<view class="dialog-close" @click="handleClose">
<view class="dialog-close-plus" data-id="close"></view>
<view class="dialog-close-plus dialog-close-rotate" data-id="close"></view>
</view>
</view>
<data-picker-view class="picker-view" ref="pickerView" v-model="value" :localdata="localdata" :preload="preload" :collection="collection" :field="field" :orderby="orderby" :where="where" :step-searh="stepSearh" :self-field="selfField" :parent-field="parentField" :managed-mode="true" @change="onchange" @datachange="ondatachange" @nodeclick="onnodeclick"></data-picker-view>
</view>
</view>
</template>
<script>
import dataPicker from "../uni-data-pickerview/uni-data-picker.js"
import DataPickerView from "../uni-data-pickerview/uni-data-pickerview.vue"
/**
* DataPicker 级联选择
* @description 支持单列、和多列级联选择。列数没有限制,如果屏幕显示不全,顶部tab区域会左右滚动。
* @tutorial https://ext.dcloud.net.cn/plugin?id=3796
* @property {String} popup-title 弹出窗口标题
* @property {Array} localdata 本地数据,参考
* @property {Boolean} border = [true|false] 是否有边框
* @property {Boolean} readonly = [true|false] 是否仅读
* @property {Boolean} preload = [true|false] 是否预加载数据
* @value true 开启预加载数据,点击弹出窗口后显示已加载数据
* @value false 关闭预加载数据,点击弹出窗口后开始加载数据
* @property {Boolean} step-searh = [true|false] 是否分布查询
* @value true 启用分布查询,仅查询当前选中节点
* @value false 关闭分布查询,一次查询出所有数据
* @property {String|DBFieldString} self-field 分布查询当前字段名称
* @property {String|DBFieldString} parent-field 分布查询父字段名称
* @property {String|DBCollectionString} collection 表名
* @property {String|DBFieldString} field 查询字段,多个字段用 `,` 分割
* @property {String} orderby 排序字段及正序倒叙设置
* @property {String|JQLString} where 查询条件
* @event {Function} popupshow 弹出的选择窗口打开时触发此事件
* @event {Function} popuphide 弹出的选择窗口关闭时触发此事件
*/
export default {
name: 'UniDataPicker',
mixins: [dataPicker],
components: {
DataPickerView
},
props: {
options: {
type: [Object, Array],
default () {
return {}
}
},
popupTitle: {
type: String,
default: '请选择'
},
placeholder: {
type: String,
default: '请选择'
},
heightMobile: {
type: String,
default: ''
},
readonly: {
type: Boolean,
default: false
},
border: {
type: Boolean,
default: true
},
split: {
type: String,
default: '/'
}
},
data() {
return {
isOpened: false,
inputSelected: []
}
},
created() {
this.form = this.getForm('uniForms')
this.formItem = this.getForm('uniFormsItem')
if (this.formItem) {
if (this.formItem.name) {
this.rename = this.formItem.name
this.form.inputChildrens.push(this)
}
}
this.$nextTick(() => {
this.load()
})
},
methods: {
onPropsChange() {
this._treeData = []
this.selectedIndex = 0
this.load()
},
load() {
if (this.readonly) {
this._processReadonly(this.localdata, this.value)
return
}
if (this.isLocaldata) {
this.loadData()
this.inputSelected = this.selected.slice(0)
} else if (!this.parentField && !this.selfField && this.value) {
this.getNodeData(() => {
this.inputSelected = this.selected.slice(0)
})
} else if (this.value.length) {
this.getTreePath(() => {
this.inputSelected = this.selected.slice(0)
})
}
},
getForm(name = 'uniForms') {
let parent = this.$parent;
let parentName = parent.$options.name;
while (parentName !== name) {
parent = parent.$parent;
if (!parent) return false;
parentName = parent.$options.name;
}
return parent;
},
show() {
this.isOpened = true
this.$nextTick(() => {
this.$refs.pickerView.updateData({
treeData: this._treeData,
selected: this.selected,
selectedIndex: this.selectedIndex
})
})
this.$emit('popupopened')
},
hide() {
this.isOpened = false
this.$emit('popupclosed')
},
handleInput() {
if (this.readonly) {
return
}
this.show()
},
handleClose(e) {
this.hide()
},
onnodeclick(e) {
this.$emit('nodeclick', e)
},
ondatachange(e) {
this._treeData = this.$refs.pickerView._treeData
},
onchange(e) {
this.hide()
this.inputSelected = e
this._dispatchEvent(e)
},
_processReadonly(dataList, valueArray) {
var isTree = dataList.findIndex((item) => {
return item.children
})
if (isTree > -1) {
if (Array.isArray(valueArray)) {
let inputValue = valueArray[valueArray.length - 1]
if (typeof inputValue === 'object' && inputValue.value) {
inputValue = inputValue.value
}
}
this.inputSelected = this._findNodePath(inputValue, this.localdata)
return
}
let result = []
for (let i = 0; i < valueArray.length; i++) {
var value = valueArray[i]
var item = dataList.find((v) => {
return v.value == value
})
if (item) {
result.push(item)
}
}
if (result.length) {
this.inputSelected = result
}
},
_filterForArray(data, valueArray) {
var result = []
for (let i = 0; i < valueArray.length; i++) {
var value = valueArray[i]
var found = data.find((item) => {
return item.value == value
})
if (found) {
result.push(found)
}
}
return result
},
_dispatchEvent(selected) {
var value = new Array(selected.length)
for (var i = 0; i < selected.length; i++) {
value[i] = selected[i].value
}
if (this.formItem) {
const item = selected[selected.length - 1]
this.formItem.setValue(item.value)
}
this.$emit('change', {
detail: {
value: selected
}
})
}
}
}
</script>
<style scoped>
.uni-data-tree {
position: relative;
font-size: 14px;
}
.error-text {
color: #DD524D;
}
.input-value {
/* #ifndef APP-NVUE */
display: flex;
/* #endif */
flex-direction: row;
align-items: center;
flex-wrap: nowrap;
font-size: 14px;
line-height: 38px;
padding: 0 5px;
overflow: hidden;
/* #ifdef APP-NVUE */
height: 40px;
/* #endif */
}
.input-value-border {
border: 1px solid #e5e5e5;
border-radius: 5px;
}
.selected-area {
flex: 1;
overflow: hidden;
/* #ifndef APP-NVUE */
display: flex;
/* #endif */
flex-direction: row;
}
.load-more {
/* #ifndef APP-NVUE */
margin-right: auto;
/* #endif */
/* #ifdef APP-NVUE */
width: 40px;
/* #endif */
}
.selected-list {
/* #ifndef APP-NVUE */
display: flex;
/* #endif */
flex-direction: row;
flex-wrap: nowrap;
padding: 0 5px;
}
.selected-item {
flex-direction: row;
padding: 0 1px;
/* #ifndef APP-NVUE */
white-space: nowrap;
/* #endif */
}
.placeholder {
color: grey;
}
.input-split-line {
opacity: 0.5;
}
.arrow-area {
position: relative;
width: 20px;
/* #ifndef APP-NVUE */
margin-left: auto;
display: flex;
/* #endif */
justify-content: center;
transform: rotate(-45deg);
transform-origin: center;
}
.input-arrow {
width: 7px;
height: 7px;
border-left: 1px solid #999;
border-bottom: 1px solid #999;
}
.uni-data-tree-cover {
position: fixed;
left: 0;
top: 0;
right: 0;
bottom: 0;
background-color: rgba(0, 0, 0, 0.4);
/* #ifndef APP-NVUE */
display: flex;
/* #endif */
flex-direction: column;
z-index: 100;
}
.uni-data-tree-dialog {
position: fixed;
left: 0;
top: 20%;
right: 0;
bottom: 0;
background-color: #FFFFFF;
border-top-left-radius: 10px;
border-top-right-radius: 10px;
/* #ifndef APP-NVUE */
display: flex;
/* #endif */
flex-direction: column;
z-index: 102;
overflow: hidden;
/* #ifdef APP-NVUE */
width: 750rpx;
/* #endif */
}
.dialog-caption {
position: relative;
/* #ifndef APP-NVUE */
display: flex;
/* #endif */
flex-direction: row;
border-bottom: 1px solid #f0f0f0;
}
.title-area {
/* #ifndef APP-NVUE */
display: flex;
/* #endif */
align-items: center;
/* #ifndef APP-NVUE */
margin: auto;
/* #endif */
padding: 0 10px;
}
.dialog-title {
font-weight: bold;
line-height: 44px;
}
.dialog-close {
position: absolute;
top: 0;
right: 0;
bottom: 0;
/* #ifndef APP-NVUE */
display: flex;
/* #endif */
flex-direction: row;
align-items: center;
padding: 0 15px;
}
.dialog-close-plus {
width: 16px;
height: 2px;
background-color: #666;
border-radius: 2px;
transform: rotate(45deg);
}
.dialog-close-rotate {
position: absolute;
transform: rotate(-45deg);
}
.picker-view {
flex: 1;
overflow: hidden;
}
/* #ifdef H5 */
@media all and (min-width: 768px) {
.uni-data-tree-cover {
background-color: transparent;
}
.uni-data-tree-dialog {
position: absolute;
top: 100%;
height: auto;
min-height: 400px;
max-height: 50vh;
background-color: #fff;
border-radius: 5px;
box-shadow: 0 0 20px 5px rgba(0, 0, 0, 0.3);
}
.dialog-caption {
display: none;
}
}
/* #endif */
</style>