<template>
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<view class="uni-data-pickerview">
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<scroll-view v-if="!isCloudDataList" class="selected-area" scroll-x="true">
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<view class="selected-list">
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<template v-for="(item,index) in selected">
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<view class="selected-item"
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:class="{'selected-item-active':index==selectedIndex}"
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v-if="item.text" @click="handleSelect(index)">
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<text>{{item.text}}</text>
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</view>
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</template>
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</view>
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</scroll-view>
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<view class="tab-c">
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<template v-for="(child, i) in dataList">
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<scroll-view class="list" :key="i" v-if="i==selectedIndex" :scroll-y="true">
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<view class="item" :class="{'is-disabled': !!item.disable}" v-for="(item, j) in child"
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@click="handleNodeClick(item, i, j)">
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<text class="item-text">{{item[map.text]}}</text>
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<view class="check" v-if="selected.length > i && item[map.value] == selected[i].value"></view>
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</view>
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</scroll-view>
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</template>
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<view class="loading-cover" v-if="loading">
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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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<view class="error-message" v-if="errorMessage">
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<text class="error-text">{{errorMessage}}</text>
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</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-picker.js"
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/**
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* DataPickerview
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* @description uni-data-pickerview
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* @tutorial https://ext.dcloud.net.cn/plugin?id=3796
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* @property {Array} localdata 本地数据，参考
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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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*/
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export default {
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name: 'UniDataPickerView',
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emits: ['nodeclick', 'change', 'datachange', 'update:modelValue'],
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mixins: [dataPicker],
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props: {
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managedMode: {
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type: Boolean,
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default: false
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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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created() {
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if (!this.managedMode) {
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this.$nextTick(() => {
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this.loadData();
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})
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}
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},
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methods: {
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onPropsChange() {
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this._treeData = [];
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this.selectedIndex = 0;
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this.$nextTick(() => {
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this.loadData();
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})
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},
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handleSelect(index) {
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this.selectedIndex = index;
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},
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handleNodeClick(item, i, j) {
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if (item.disable) {
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return;
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}
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const node = this.dataList[i][j];
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const text = node[this.map.text];
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const value = node[this.map.value];
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if (i < this.selected.length - 1) {
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this.selected.splice(i, this.selected.length - i)
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this.selected.push({
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text,
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value
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})
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} else if (i === this.selected.length - 1) {
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this.selected.splice(i, 1, {
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text,
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value
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})
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}
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if (node.isleaf) {
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this.onSelectedChange(node, node.isleaf)
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return
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}
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const {
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isleaf,
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hasNodes
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} = this._updateBindData()
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// 本地数据
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if (this.isLocalData) {
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this.onSelectedChange(node, (!hasNodes || isleaf))
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} else if (this.isCloudDataList) { // Cloud 数据 (单列)
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this.onSelectedChange(node, true)
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} else if (this.isCloudDataTree) { // Cloud 数据 (树形)
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if (isleaf) {
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this.onSelectedChange(node, node.isleaf)
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} else if (!hasNodes) { // 请求一次服务器以确定是否为叶子节点
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this.loadCloudDataNode((data) => {
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if (!data.length) {
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node.isleaf = true
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} else {
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this._treeData.push(...data)
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this._updateBindData(node)
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}
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this.onSelectedChange(node, node.isleaf)
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})
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}
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}
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},
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updateData(data) {
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this._treeData = data.treeData
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this.selected = data.selected
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if (!this._treeData.length) {
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this.loadData()
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} else {
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//this.selected = data.selected
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this._updateBindData()
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}
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},
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onDataChange() {
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this.$emit('datachange');
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},
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onSelectedChange(node, isleaf) {
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if (isleaf) {
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this._dispatchEvent()
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}
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if (node) {
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this.$emit('nodeclick', node)
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}
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},
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_dispatchEvent() {
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this.$emit('change', this.selected.slice(0))
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}
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}
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}
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</script>
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<style lang="scss">
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$uni-primary: #007aff !default;
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.uni-data-pickerview {
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flex: 1;
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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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overflow: hidden;
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height: 100%;
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}
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.error-text {
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color: #DD524D;
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}
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.loading-cover {
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position: absolute;
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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(255, 255, 255, .5);
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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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align-items: center;
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z-index: 1001;
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}
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.load-more {
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/* #ifndef APP-NVUE */
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margin: auto;
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/* #endif */
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}
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.error-message {
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background-color: #fff;
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position: absolute;
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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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padding: 15px;
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opacity: .9;
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z-index: 102;
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}
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/* #ifdef APP-NVUE */
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.selected-area {
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width: 750rpx;
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}
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/* #endif */
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.selected-list {
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/* #ifndef APP-NVUE */
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display: flex;
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flex-wrap: nowrap;
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/* #endif */
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flex-direction: row;
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padding: 0 5px;
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border-bottom: 1px solid #f8f8f8;
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}
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.selected-item {
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margin-left: 10px;
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margin-right: 10px;
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padding: 12px 0;
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text-align: center;
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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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.selected-item-text-overflow {
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width: 168px;
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/* fix nvue */
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overflow: hidden;
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/* #ifndef APP-NVUE */
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width: 6em;
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white-space: nowrap;
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text-overflow: ellipsis;
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-o-text-overflow: ellipsis;
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/* #endif */
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}
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.selected-item-active {
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border-bottom: 2px solid $uni-primary;
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}
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.selected-item-text {
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color: $uni-primary;
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}
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.tab-c {
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position: relative;
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flex: 1;
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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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overflow: hidden;
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}
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.list {
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flex: 1;
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}
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.item {
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padding: 12px 15px;
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/* border-bottom: 1px solid #f0f0f0; */
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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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justify-content: space-between;
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}
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.is-disabled {
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opacity: .5;
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}
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.item-text {
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/* flex: 1; */
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color: #333333;
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}
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.item-text-overflow {
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width: 280px;
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/* fix nvue */
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overflow: hidden;
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/* #ifndef APP-NVUE */
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width: 20em;
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white-space: nowrap;
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text-overflow: ellipsis;
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-o-text-overflow: ellipsis;
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/* #endif */
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}
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.check {
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margin-right: 5px;
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border: 2px solid $uni-primary;
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border-left: 0;
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border-top: 0;
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height: 12px;
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width: 6px;
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transform-origin: center;
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/* #ifndef APP-NVUE */
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transition: all 0.3s;
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/* #endif */
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transform: rotate(45deg);
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}
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</style>
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