uniapp中实现通用tree结构组件库
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1.需求：
仓库数据为树形结构，支持多层嵌套。在选择入库或出库时，用户只能从所有节点中选择一个仓库。注意，并非所有的仓库都可被选中--部分仓库被设置为“不可选择”（列如虚拟仓或权限受限的仓库），这些节点应支持配置禁用状态，禁止用户勾选。
效果图：黄色框便是可以勾选，灰色框 禁用
2.实现通用组件库
2.1 NextTree.vue 文件
<template>
<!-- 弹窗单选功能 -->
<view class="next-tree" v-show="showTree">
<view class="next-tree-cnt" :class="{ show: showTree }">
<view class="next-tree-bar">
<view class="next-tree-bar-cancel" :style="{ color: cancelColor }" hover-class="hover-c" @tap="_cancel">
取消</view>
<view class="next-tree-bar-title" :style="{ color: titleColor }">{{ title }}</view>
<view class="next-tree-bar-confirm" :style="{ color: confirmColor }" hover-class="hover-c"
@tap="_confirm">确定</view>
</view>
<view class="next-tree-view">
<scroll-view class="next-tree-view-sc" :scroll-y="true">
<block v-for="(item, index) in treeList" :key="index">
<view class="next-tree-item" :style="[
{
paddingLeft: item.rank * 15 + 'px',
zIndex: item.rank * -1 + 50
}
]" :class="{
border: border === true,
show: item.show,
last: item.lastRank,
showchild: item.showChild,
open: item.open
}">
<view class="next-tree-label" @tap.stop="_treeItemTap(item, index)">
<image class="next-tree-icon"
:src="item.lastRank ? lastIcon : item.showChild ? currentIcon : defaultIcon">
</image>
{{ item.name }}
</view>
<view class="next-tree-check" @tap.stop="_treeItemSelect(item, index)"
v-if="selectParent ? true : item.lastRank">
<view class="next-tree-check-yes" v-if="item.checked" :class="{ radio: !multiple }"
:style="{ 'border-color': confirmColor, 'background-color': confirmColor }">
<view class="next-tree-check-yes-b" :style="{ 'background-color': confirmColor }">
<text class="icon-text">✔</text>
</view>
</view>
<!-- :style="{ 'border-color': item.disabled == false ? confirmColor : unselectColor }" -->
<view class="next-tree-check-no" v-else :class="{ radio: !multiple }"
:style="{ 'border-color': item.disabled === true ? unselectColor : confirmColor }">
</view>
</view>
</view>
</block>
</scroll-view>
</view>
</view>
</view>
</template>
<script>
export default {
name: 'next-tree',
props: {
treeData: {
type: Array,
default: function () {
return [];
}
},
valueKey: {
type: String,
default: 'id'
},
labelKey: {
type: String,
default: 'label'
},
childrenKey: {
type: String,
default: 'children'
},
title: {
type: String,
default: ''
},
multiple: {
// 是否可以多选
type: Boolean,
default: false
},
selectParent: {
//是否可以选父级
type: Boolean,
default: false
},
foldAll: {
//折叠时关闭所有已经打开的子集，再次打开时需要一级一级打开
type: Boolean,
default: false
},
confirmColor: {
// 确定按钮颜色
type: String,
default: '#f9ae3d' // #f9ae3d
},
unselectColor: {
// 确定按钮颜色
type: String,
default: '#ccc' // #f9ae3d
},
cancelColor: {
// 取消按钮颜色
type: String,
default: '' // #757575
},
titleColor: {
// 标题颜色
type: String,
default: '' // #757575
},
currentIcon: {
// 展开时候的ic
type: String,
default:
'data:image/png;base64,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'
},
defaultIcon: {
// 折叠时候的ic
type: String,
default:
'data:image/png;base64,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'
},
lastIcon: {
// 没有子集的ic
type: String,
default: ''
},
border: {
// 是否有分割线
type: Boolean,
default: false
}
},
data() {
return {
showTree: false,
treeList: [],
selectIndex: -1,
childNums: [],
rt: [],
rtName: []
};
},
computed: {},
methods: {
_show() {
console.log('_show');
this.showTree = true;
},
_hide() {
console.log('_hide');
this.showTree = false;
},
_cancel() {
console.log('_cancel');
this._hide();
this.$emit('cancel', '');
},
_confirm() {
console.log('_confirm');
this.rt = [];
this.rtName = [];
// 处理所选数据
this.treeList.forEach((item, i) => {
if (item.id == 100 && item.checked) {
return this.confirmEach(this.treeData);
}
if (item.checked && item.parentId && item.parentId != '100') {
this.rt.push(item.id);
this.rtName.push(item.name);
}
});
this._hide();
const targetNode = this.findNodeById(this.treeData, this.rt[0]);
console.log('targetNode', targetNode);
// this.$emit('confirm', { id: this.rt, name: this.rtName });
this.$emit('confirm', targetNode);
},
// 深度优先递归查找
findNodeById(tree, targetId) {
for (let i = 0; i < tree.length; i++) {
const node = tree[i];
// 如果当前节点匹配，直接返回该节点
if (node.id === targetId) {
return node;
}
// 如果有子节点，递归查找
if (node.children && Array.isArray(node.children) && node.children.length > 0) {
const found = this.findNodeById(node.children, targetId);
if (found) {
return found; // 找到后逐层返回
}
}
}
// 没找到则返回 null
return null;
},
confirmEach(list) {
console.log('confirmEach');
list.forEach((item, index) => {
if (item.isDy) {
this.rtName.push(item.name);
this.rt.push(item.id);
}
if (item.children && item.children.length > 0) this.confirmEach(item.children);
});
},
//扁平化树结构
_renderTreeList(list = [], rank = 0, parentId = [], parents = []) {
console.log('_renderTreeList');
list.forEach((item) => {
this.treeList.push({
id: item[this.valueKey],
name: item[this.labelKey],
source: item,
parentId, // 父级id数组
parents, // 父级id数组
rank, // 层级
showChild: false, //子级是否显示
open: false, //是否打开
show: rank === 0, // 自身是否显示
hideArr: [],
disabled: item.disabled,
orChecked: item.checked ? item.checked : false,
checked: item.checked ? item.checked : false
});
if (Array.isArray(item[this.childrenKey]) && item[this.childrenKey].length > 0) {
// console.log(item)
let parentid = [...parentId],
parentArr = [...parents],
childrenid = [];
delete parentArr.children;
parentid.push(item[this.valueKey]);
parentArr.push({
[this.valueKey]: item[this.valueKey],
[this.labelKey]: item[this.labelKey]
});
this._renderTreeList(item[this.childrenKey], rank + 1, parentid, parentArr);
} else {
this.treeList[this.treeList.length - 1].lastRank = true;
}
});
},
// 处理默认选择
_defaultSelect() {
console.log('_defaultSelect');
this.treeList.forEach((v, i) => {
if (v.checked) {
this.treeList.forEach((v2, i2) => {
if (v.parentId.toString().indexOf(v2.parentId.toString()) >= 0) {
v2.show = true;
if (v.parentId.includes(v2.id)) {
v2.showChild = true;
v2.open = true;
}
}
});
}
});
},
// 点击
_treeItemTap(item, index) {
console.log('_treeItemTap');
// 如果是灰色（disabled为true），则不可选
let list = this.treeList;
let id = item.id;
item.showChild = !item.showChild;
item.open = item.showChild ? true : !item.open;
list.forEach((childItem, i) => {
if (item.showChild === false) {
//隐藏所有子级
if (!childItem.parentId.includes(id)) {
return;
}
if (!this.foldAll) {
if (childItem.lastRank !== true && !childItem.open) {
childItem.showChild = false;
}
// 为隐藏的内容添加一个标记
if (childItem.show) {
childItem.hideArr[item.rank] = id;
}
} else {
if (childItem.lastRank !== true) {
childItem.showChild = false;
}
}
childItem.show = false;
} else {
// 打开子集
if (childItem.parentId[childItem.parentId.length - 1] === id) {
childItem.show = true;
}
// 打开被隐藏的子集
if (childItem.parentId.includes(id) && !this.foldAll) {
// console.log(childItem.hideArr)
if (childItem.hideArr[item.rank] === id) {
childItem.show = true;
if (childItem.open && childItem.showChild) {
childItem.showChild = true;
} else {
childItem.showChild = false;
}
childItem.hideArr[item.rank] = null;
}
}
}
});
},
_treeItemSelect(item, index) {
console.log('_treeItemSelect');
// 如果是灰色（disabled为true），则不可选
if (item.disabled === true) return;
// 单选逻辑：取消其他所有项的选择状态，并选中当前项
this.treeList.forEach((item, idx) => {
this.treeList[idx].checked = false;
});
this.treeList[index].checked = true;
},
// 重置数据
_reTreeList() {
this.treeList.forEach((v, i) => {
this.treeList[i].checked = v.orChecked;
});
},
_initTree(treeData = this.treeData) {
this.treeList = [];
this._renderTreeList(treeData);
this.$nextTick(() => {
this._defaultSelect(treeData);
// this._treeItemTap()
});
}
},
mounted() {
console.log('mounted');
this._initTree();
this.$watch(
() => this.treeData,
(list) => {
this._initTree(list);
},
{ deep: true, immediate: true }
);
this.$watch(
() => [this.multiple, this.selectParent],
() => {
if (this.treeData.length) {
this._reTreeList();
}
},
{ deep: true, immediate: true }
);
}
};
</script>
<style scoped lang="scss">
.next-tree {
width: 100%;
height: 100%;
position: fixed;
bottom: 120rpx;
background: rgb(0, 0, 0, 0.5);
.next-tree-cnt {
width: 100%;
height: 50%;
display: flex;
flex-direction: column;
justify-content: space-around;
transition: transform 0.3s ease, opacity 0.3s ease;
transform: translateY(0%);
overflow-y: auto;
opacity: 0;
.next-tree-bar {
background-color: #fff;
height: 80rpx;
line-height: 80rpx;
padding-left: 20rpx;
padding-right: 20rpx;
display: flex;
justify-content: space-between;
align-items: center;
box-sizing: border-box;
border-bottom-width: 1rpx !important;
border-bottom-style: solid;
border-bottom-color: #f5f5f5;
font-size: 32rpx;
color: #757575;
.hover-c {
opacity: 0.6;
}
.next-tree-bar-confirm {
color: #f9ae3d;
}
}
.next-tree-view {
flex: 1;
position: relative;
overflow-y: auto; // ✅ 滚动发生在 .next-tree-view 内部
// 可选：添加滚动条样式
-webkit-overflow-scrolling: touch;
background-color: #fff;
padding-top: 20rpx;
padding-right: 20rpx;
padding-bottom: 20rpx;
padding-left: 20rpx;
.next-tree-view-sc {
height: 100%;
overflow: hidden;
.next-tree-item {
display: flex;
justify-content: space-between;
align-items: center;
font-size: 26rpx;
color: #757575;
line-height: 1;
height: 0;
opacity: 0;
transition: 0.2s;
position: relative;
overflow: hidden;
.next-tree-label {
flex: 1;
display: flex;
align-items: center;
height: 100%;
line-height: 1.2;
.next-tree-icon {
width: 26rpx;
height: 26rpx;
margin-right: 8rpx;
}
}
.next-tree-check {
width: 40px;
height: 40px;
display: flex;
justify-content: center;
align-items: center;
.radio {
border-top-left-radius: 50%;
border-top-right-radius: 50%;
border-bottom-right-radius: 50%;
border-bottom-left-radius: 50%;
.next-tree-check-yes-b {
border-top-left-radius: 50%;
border-top-right-radius: 50%;
border-bottom-right-radius: 50%;
border-bottom-left-radius: 50%;
}
}
.next-tree-check-yes,
.next-tree-check-no {
width: 20px;
height: 20px;
border-top-left-radius: 20%;
border-top-right-radius: 20%;
border-bottom-right-radius: 20%;
border-bottom-left-radius: 20%;
border-top-width: 1rpx;
border-left-width: 1rpx;
border-bottom-width: 1rpx;
border-right-width: 1rpx;
border-style: solid;
border-color: #f9ae3d;
display: flex;
justify-content: center;
align-items: center;
box-sizing: border-box;
}
.next-tree-check-yes-b {
border-top-left-radius: 20%;
border-top-right-radius: 20%;
border-bottom-right-radius: 20%;
border-bottom-left-radius: 20%;
background-color: #f9ae3d;
color: #fff;
}
.next-tree-check-yes-b .icon-text {
font-size: 14px;
font-weight: normal;
font-family: uicon-iconfont;
display: flex;
flex-direction: row;
align-items: center;
}
}
}
.next-tree-item.showchild:before {
transform: rotate(90deg);
}
.next-tree-item.border {
border-bottom: 1rpx solid rgba(204, 204, 204, 0.2);
}
.next-tree-item.last:before {
opacity: 0;
}
.next-tree-item.show {
height: 80rpx;
opacity: 1;
}
}
}
}
.next-tree-cnt.show {
transform: translateY(100%);
opacity: 1;
}
}
</style>
2.2 使用
treeData数据
[{"name":"仓库1","id":2,"code":"WH20250000003","path":"仓库1","disabled":false,"children":[{"name":"仓库1-1","id":5,"code":"WH20250000006","path":"仓库1/仓库1-1","disabled":false,"children":[]},{"name":"仓库1-2","id":6,"code":"WH20250000007","path":"仓库1/仓库1-2","disabled":false,"children":[{"name":"仓库1-2-1","id":8,"code":"WH20250000009","path":"仓库1/仓库1-2/仓库1-2-1","disabled":false,"children":[]},{"name":"仓库1-2-2","id":9,"code":"WH20250000010","path":"仓库1/仓库1-2/仓库1-2-2","disabled":true,"children":[{"name":"仓库1-2-2-1","id":10,"code":"WH20250000012","path":"仓库1/仓库1-2/仓库1-2-2/仓库1-2-2-1","disabled":false,"children":[]},{"name":"仓库1-2-2-2","id":11,"code":"WH20250000013","path":"仓库1/仓库1-2/仓库1-2-2/仓库1-2-2-2","disabled":false,"children":[]},{"name":"仓库1-2-2-3","id":12,"code":"WH20250000014","path":"仓库1/仓库1-2/仓库1-2-2/仓库1-2-2-3","disabled":false,"children":[]}]}]},{"name":"仓库1-3","id":7,"code":"WH20250000008","path":"仓库1/仓库1-3","disabled":false,"children":[]}]},{"name":"仓库2","id":3,"code":"WH20250000004","path":"仓库2","disabled":false,"children":[]},{"name":"仓库3","id":4,"code":"WH20250000005","path":"仓库3","disabled":false,"children":[]},{"name":"虚拟领料库","id":13,"code":"LL_XBK_VIRTUAL","path":"虚拟领料库","disabled":false,"children":[]},{"name":"虚拟成品线边仓","id":14,"code":"CP_XBK_VIRTUAL","path":"虚拟成品线边仓","disabled":false,"children":[]}]
// 使用组件
<NextTree ref="qiantree" :selectParent="true" labelKey="name" valueKey="id" :multiple="true"
:treeData="treeData" @confirm="warehouseOK" />
// import
import NextTree from '@/components/common/NextTree.vue';
// 声明 data 数据
treeData: []
// methods
warehouseOK(obj) {
// NextTree 组件 通过 emit 事件机制向外抛出数据，供父组件接受处理
console.log('warehouseOK', obj);
}
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