<template>
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<view class="uni-data-tree">
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<view class="uni-data-tree-input" @click="handleInput">
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<slot :options="options" :data="inputSelected" :error="errorMessage">
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<view class="input-value" :class="{'input-value-border': border}">
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<text v-if="errorMessage" class="selected-area error-text">{{errorMessage}}</text>
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<view v-else-if="loading && !isOpened" class="selected-area">
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<uni-load-more class="load-more" :contentText="loadMore" status="loading"></uni-load-more>
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</view>
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<scroll-view v-else-if="inputSelected.length" class="selected-area" scroll-x="true">
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<view class="selected-list">
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<view class="selected-item" v-for="(item,index) in inputSelected" :key="index">
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<text class="text-color">{{item.text}}</text><text v-if="index<inputSelected.length-1"
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class="input-split-line">{{split}}</text>
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</view>
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</view>
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</scroll-view>
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<text v-else class="selected-area placeholder">{{placeholder}}</text>
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<view v-if="clearIcon && !readonly && inputSelected.length" class="icon-clear" @click.stop="clear">
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<uni-icons type="clear" color="#c0c4cc" size="24"></uni-icons>
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</view>
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<view class="arrow-area" v-if="(!clearIcon || !inputSelected.length) && !readonly ">
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<view class="input-arrow"></view>
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</view>
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</view>
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</slot>
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</view>
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<view class="uni-data-tree-cover" v-if="isOpened" @click="handleClose"></view>
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<view class="uni-data-tree-dialog" v-if="isOpened">
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<view class="uni-popper__arrow"></view>
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<view class="dialog-caption">
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<view class="title-area">
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<text class="dialog-title">{{popupTitle}}</text>
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</view>
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<view class="dialog-close" @click="handleClose">
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<view class="dialog-close-plus" data-id="close"></view>
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<view class="dialog-close-plus dialog-close-rotate" data-id="close"></view>
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</view>
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</view>
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<data-picker-view class="picker-view" ref="pickerView" v-model="dataValue" :localdata="localdata"
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:preload="preload" :collection="collection" :field="field" :orderby="orderby" :where="where"
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:step-searh="stepSearh" :self-field="selfField" :parent-field="parentField" :managed-mode="true" :map="map"
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:ellipsis="ellipsis" @change="onchange" @datachange="ondatachange" @nodeclick="onnodeclick">
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</data-picker-view>
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</view>
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</view>
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</template>
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<script>
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import dataPicker from "../uni-data-pickerview/uni-data-picker.js"
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import DataPickerView from "../uni-data-pickerview/uni-data-pickerview.vue"
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/**
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* DataPicker 级联选择
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* @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。
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* @tutorial https://ext.dcloud.net.cn/plugin?id=3796
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* @property {String} popup-title 弹出窗口标题
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* @property {Array} localdata 本地数据，参考
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* @property {Boolean} border = [true|false] 是否有边框
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* @property {Boolean} readonly = [true|false] 是否仅读
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* @property {Boolean} preload = [true|false] 是否预加载数据
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* @value true 开启预加载数据，点击弹出窗口后显示已加载数据
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* @value false 关闭预加载数据，点击弹出窗口后开始加载数据
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* @property {Boolean} step-searh = [true|false] 是否分布查询
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* @value true 启用分布查询，仅查询当前选中节点
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* @value false 关闭分布查询，一次查询出所有数据
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* @property {String|DBFieldString} self-field 分布查询当前字段名称
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* @property {String|DBFieldString} parent-field 分布查询父字段名称
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* @property {String|DBCollectionString} collection 表名
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* @property {String|DBFieldString} field 查询字段，多个字段用 `,` 分割
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* @property {String} orderby 排序字段及正序倒叙设置
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* @property {String|JQLString} where 查询条件
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* @event {Function} popupshow 弹出的选择窗口打开时触发此事件
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* @event {Function} popuphide 弹出的选择窗口关闭时触发此事件
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*/
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export default {
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name: 'UniDataPicker',
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emits: ['popupopened', 'popupclosed', 'nodeclick', 'input', 'change', 'update:modelValue'],
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mixins: [dataPicker],
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components: {
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DataPickerView
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},
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props: {
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options: {
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type: [Object, Array],
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default () {
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return {}
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}
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},
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popupTitle: {
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type: String,
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default: '请选择'
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},
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placeholder: {
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type: String,
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default: '请选择'
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},
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heightMobile: {
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type: String,
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default: ''
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},
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readonly: {
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type: Boolean,
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default: false
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},
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clearIcon: {
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type: Boolean,
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default: true
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},
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border: {
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type: Boolean,
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default: true
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},
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split: {
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type: String,
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default: '/'
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},
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ellipsis: {
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type: Boolean,
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default: true
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}
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},
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data() {
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return {
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isOpened: false,
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inputSelected: []
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}
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},
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created() {
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this.$nextTick(() => {
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this.load();
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})
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},
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methods: {
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clear() {
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this.modelValue = null;
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this._dispatchEvent([]);
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},
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onPropsChange() {
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this._treeData = [];
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this.selectedIndex = 0;
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this.load();
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},
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load() {
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if (this.readonly) {
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this._processReadonly(this.localdata, this.dataValue);
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return;
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}
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if (!this.hasValue) {
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return;
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}
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// 回显本地数据
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if (this.isLocalData) {
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this.loadData();
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this.inputSelected = this.selected.slice(0);
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} else if (this.isCloudDataList || this.isCloudDataTree) { // 回显 Cloud 数据
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this.loading = true;
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this.getCloudDataValue().then((res) => {
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this.loading = false;
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this.inputSelected = res;
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}).catch((err) => {
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this.loading = false;
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this.errorMessage = err;
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})
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}
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},
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show() {
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this.isOpened = true
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setTimeout(() => {
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this.$refs.pickerView.updateData({
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treeData: this._treeData,
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selected: this.selected,
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selectedIndex: this.selectedIndex
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})
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}, 200)
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this.$emit('popupopened')
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},
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hide() {
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this.isOpened = false
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this.$emit('popupclosed')
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},
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handleInput() {
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if (this.readonly) {
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return
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}
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this.show()
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},
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handleClose(e) {
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this.hide()
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},
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onnodeclick(e) {
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this.$emit('nodeclick', e)
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},
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ondatachange(e) {
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this._treeData = this.$refs.pickerView._treeData
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},
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onchange(e) {
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this.hide()
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this.$nextTick(() => {
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this.inputSelected = e;
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})
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this._dispatchEvent(e)
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},
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_processReadonly(dataList, value) {
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var isTree = dataList.findIndex((item) => {
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return item.children
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})
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if (isTree > -1) {
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let inputValue
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if (Array.isArray(value)) {
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inputValue = value[value.length - 1]
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if (typeof inputValue === 'object' && inputValue.value) {
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inputValue = inputValue.value
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}
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} else {
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inputValue = value
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}
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this.inputSelected = this._findNodePath(inputValue, this.localdata)
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return
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}
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if (!this.hasValue) {
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this.inputSelected = []
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return
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}
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let result = []
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for (let i = 0; i < value.length; i++) {
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var val = value[i]
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var item = dataList.find((v) => {
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return v.value == val
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})
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if (item) {
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result.push(item)
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}
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}
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if (result.length) {
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this.inputSelected = result
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}
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},
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_filterForArray(data, valueArray) {
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var result = []
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for (let i = 0; i < valueArray.length; i++) {
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var value = valueArray[i]
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var found = data.find((item) => {
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return item.value == value
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})
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if (found) {
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result.push(found)
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}
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}
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return result
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},
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_dispatchEvent(selected) {
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let item = {}
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if (selected.length) {
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var value = new Array(selected.length)
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for (var i = 0; i < selected.length; i++) {
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value[i] = selected[i].value
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}
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item = selected[selected.length - 1]
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} else {
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item.value = ''
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}
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if (this.formItem) {
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this.formItem.setValue(item.value)
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}
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this.$emit('input', item.value)
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this.$emit('update:modelValue', item.value)
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this.$emit('change', {
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detail: {
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value: selected
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}
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})
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}
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}
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}
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</script>
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<style>
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.uni-data-tree {
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flex: 1;
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position: relative;
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font-size: 14px;
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}
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.error-text {
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color: #DD524D;
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}
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.input-value {
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/* #ifndef APP-NVUE */
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display: flex;
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/* #endif */
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flex-direction: row;
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align-items: center;
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flex-wrap: nowrap;
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font-size: 14px;
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/* line-height: 35px; */
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padding: 0 10px;
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padding-right: 5px;
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overflow: hidden;
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height: 35px;
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/* #ifndef APP-NVUE */
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box-sizing: border-box;
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/* #endif */
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}
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.input-value-border {
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border: 1px solid #e5e5e5;
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border-radius: 5px;
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}
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.selected-area {
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flex: 1;
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overflow: hidden;
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/* #ifndef APP-NVUE */
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display: flex;
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/* #endif */
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flex-direction: row;
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}
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.load-more {
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/* #ifndef APP-NVUE */
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margin-right: auto;
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/* #endif */
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/* #ifdef APP-NVUE */
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width: 40px;
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/* #endif */
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}
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.selected-list {
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/* #ifndef APP-NVUE */
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display: flex;
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/* #endif */
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flex-direction: row;
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flex-wrap: nowrap;
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/* padding: 0 5px; */
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}
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.selected-item {
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flex-direction: row;
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/* padding: 0 1px; */
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/* #ifndef APP-NVUE */
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white-space: nowrap;
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/* #endif */
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}
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.text-color {
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color: #333;
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}
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.placeholder {
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color: grey;
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font-size: 12px;
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}
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.input-split-line {
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opacity: .5;
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}
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.arrow-area {
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position: relative;
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width: 20px;
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/* #ifndef APP-NVUE */
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margin-bottom: 5px;
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margin-left: auto;
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display: flex;
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/* #endif */
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justify-content: center;
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transform: rotate(-45deg);
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transform-origin: center;
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}
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.input-arrow {
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width: 7px;
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height: 7px;
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border-left: 1px solid #999;
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border-bottom: 1px solid #999;
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}
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.uni-data-tree-cover {
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position: fixed;
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left: 0;
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top: 0;
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right: 0;
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bottom: 0;
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background-color: rgba(0, 0, 0, .4);
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/* #ifndef APP-NVUE */
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display: flex;
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/* #endif */
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flex-direction: column;
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z-index: 100;
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}
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.uni-data-tree-dialog {
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position: fixed;
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left: 0;
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/* #ifndef APP-NVUE */
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top: 20%;
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/* #endif */
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/* #ifdef APP-NVUE */
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top: 200px;
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/* #endif */
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right: 0;
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bottom: 0;
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background-color: #FFFFFF;
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border-top-left-radius: 10px;
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border-top-right-radius: 10px;
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/* #ifndef APP-NVUE */
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display: flex;
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/* #endif */
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flex-direction: column;
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z-index: 102;
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overflow: hidden;
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/* #ifdef APP-NVUE */
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width: 750rpx;
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/* #endif */
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}
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.dialog-caption {
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position: relative;
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/* #ifndef APP-NVUE */
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display: flex;
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/* #endif */
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flex-direction: row;
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/* border-bottom: 1px solid #f0f0f0; */
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}
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.title-area {
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/* #ifndef APP-NVUE */
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display: flex;
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/* #endif */
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align-items: center;
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/* #ifndef APP-NVUE */
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margin: auto;
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/* #endif */
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padding: 0 10px;
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}
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.dialog-title {
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/* font-weight: bold; */
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line-height: 44px;
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}
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.dialog-close {
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position: absolute;
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top: 0;
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right: 0;
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bottom: 0;
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/* #ifndef APP-NVUE */
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display: flex;
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/* #endif */
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flex-direction: row;
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align-items: center;
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padding: 0 15px;
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}
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.dialog-close-plus {
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width: 16px;
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height: 2px;
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background-color: #666;
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border-radius: 2px;
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transform: rotate(45deg);
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}
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.dialog-close-rotate {
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position: absolute;
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transform: rotate(-45deg);
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}
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.picker-view {
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flex: 1;
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overflow: hidden;
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}
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.icon-clear {
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display: flex;
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align-items: center;
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}
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/* #ifdef H5 */
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@media all and (min-width: 768px) {
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.uni-data-tree-cover {
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background-color: transparent;
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}
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.uni-data-tree-dialog {
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position: absolute;
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top: 55px;
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height: auto;
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min-height: 400px;
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max-height: 50vh;
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background-color: #fff;
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border: 1px solid #EBEEF5;
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box-shadow: 0 2px 12px 0 rgba(0, 0, 0, 0.1);
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border-radius: 4px;
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overflow: unset;
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}
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.dialog-caption {
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display: none;
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}
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.icon-clear {
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/* margin-right: 5px; */
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}
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}
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/* #endif */
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/* picker 弹出层通用的指示小三角, todo：扩展至上下左右方向定位 */
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/* #ifndef APP-NVUE */
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.uni-popper__arrow,
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.uni-popper__arrow::after {
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position: absolute;
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display: block;
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width: 0;
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height: 0;
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border-color: transparent;
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border-style: solid;
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border-width: 6px;
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}
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.uni-popper__arrow {
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filter: drop-shadow(0 2px 12px rgba(0, 0, 0, 0.03));
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top: -6px;
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left: 10%;
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margin-right: 3px;
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border-top-width: 0;
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border-bottom-color: #EBEEF5;
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}
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.uni-popper__arrow::after {
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content: " ";
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top: 1px;
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margin-left: -6px;
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border-top-width: 0;
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border-bottom-color: #fff;
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}
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/* #endif */
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</style>
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