【组件库】使用Vue2+AntV X6+ElementUI 实现拖拽配置自定义vue节点

    先来看看实现效果：

    【组件库】使用 AntV X6 + ElementUI 实现拖拽配置自定义 Vue 节点
在现代前端开发中，流程图和可视化编辑器的需求日益增加。AntV X6 是一个强大的图形化框架，支持丰富的图形操作和自定义功能。结合 ElementUI，我们可以轻松实现一个基于 Vue 的拖拽配置流程图，支持自定义节点和动态字段编辑。

一、技术栈介绍

AntV X6：一个基于 HTML5 Canvas 的图形化框架，支持流程图、拓扑图等多种图形化场景。

• ElementUI：一个基于 Vue 的 UI 组件库，提供丰富的表单、表格和弹窗组件。
• Vue.js：一个渐进式 JavaScript 框架，用于构建用户界面。

二、项目需求

我们的目标是实现一个流程图编辑器，支持以下功能：
拖拽添加节点：用户可以通过拖拽的方式在画布上添加自定义节点。
节点配置：通过弹窗对话框配置节点的属性，包括实体名称和字段信息。
字段动态编辑：支持动态添加、删除字段，并提供字段类型选择。
数据导入导出：支持从 JSON 文件导入数据，以及将当前流程图导出为 JSON 文件。

三、实现步骤

1. 初始化项目

首先，确保你已经安装了 Vue CLI 和相关依赖。创建一个新的 Vue 项目，并安装以下依赖：

vue create x6-vue-flow
cd x6-vue-flow
npm install @antv/x6 @antv/x6-plugin-dnd @antv/x6-vue-shape element-ui

2. 创建主组件

在 src/components/FlowEditor.vue 中，实现流程图编辑器的主组件。以下是核心代码：

<template><div class="flow-container"><!-- 导航栏 --><div class="flow-nav"><div class="add-entity" @mousedown="startDrag">添加实体</div><el-button type="primary" plain size="medium">保存</el-button><el-button type="warning" plain size="medium">清空</el-button><el-button type="success" plain size="medium">导出</el-button><el-upload accept=".json" :on-progress="handleOnProgress" action="" :show-file-list="false"><el-button plain size="primary">导入</el-button></el-upload></div><!-- 画布 --><div class="flow-content"><div id="container"></div></div><!-- 实体编辑对话框 --><el-dialog title="新增实体" :visible.sync="dialogVisible" width="45%"><el-form ref="form" :model="formData" label-width="130px" :rules="rules" size="small"><el-form-item prop="entity_name_CN" label="逻辑实体中文名"><el-input v-model="formData.entity_name_CN" clearable></el-input></el-form-item><el-form-item prop="entity_name_EN" label="逻辑实体英文名"><el-input v-model="formData.entity_name_EN" clearable></el-input></el-form-item><div class="field-container"><div class="field-container__title"><div class="primary-title">字段信息</div><el-button type="primary" size="small" icon="el-icon-plus" @click="addField">新增一行</el-button></div><el-table :data="formData.formField" height="250"><el-table-column type="index" width="50" label="序号" align="center"></el-table-column><el-table-column prop="cname" label="字段中文名" width="150" align="center"><template v-slot:default="{ $index }"><el-input size="small" v-model="formData.formField[$index].cname"></el-input></template></el-table-column><el-table-column prop="ename" label="字段英文名" width="200" align="center"><template v-slot:default="{ $index }"><el-input size="small" v-model="formData.formField[$index].ename"></el-input></template></el-table-column><el-table-column prop="efType" label="字段类型" align="center"><template v-slot:default="{ $index }"><el-select v-model="formData.formField[$index].efType" size="small"><el-option v-for="item in options" :key="item" :label="item" :value="item"></el-option></el-select></template></el-table-column><el-table-column label="操作" fixed="right" align="center" width="80"><template v-slot:default="{ $index }"><el-button type="danger" size="small" @click="handleFieldDelete($index)">删除</el-button></template></el-table-column></el-table></div></el-form><span slot="footer"><el-button @click="dialogVisible = false">取消</el-button><el-button type="primary" @click="onSubmit(formData)">确定</el-button></span></el-dialog></div>
</template><script>
import { Graph, Shape } from '@antv/x6';
import { Dnd } from '@antv/x6-plugin-dnd';
import { register } from '@antv/x6-vue-shape';
import CellNode from './CellNode.vue';export default {name: 'FlowEditor',data() {return {graph: null,dialogVisible: false,formData: {entity_name_CN: '',entity_name_EN: '',formField: [{ cname: '', ename: '', efType: '' }],},options: ['STRING', 'NUMBER', 'BOOLEAN', 'DATE', 'EMAIL'],};},mounted() {this.$nextTick(() => {this.initGraph();});},methods: {initGraph() {const container = document.getElementById('container');const config = {container,width: '100%',height: '100%',autoResize: true,panning: true,mousewheel: true,};this.graph = new Graph(config);const dnd = new Dnd({target: this.graph,validateNode: (node) => {this.currentDragNode = node;this.dialogVisible = true;return false;},});this.dnd = dnd;},startDrag(e) {const node = this.graph.createNode({shape: 'CellNode',});this.dnd.start(node, e);},onSubmit(data) {this.dialogVisible = false;const node = this.graph.addNode(this.currentDragNode);node.setData(data);},addField() {this.formData.formField.push({ cname: '', ename: '', efType: '' });},handleFieldDelete(index) {this.formData.formField.splice(index, 1);},},
};
</script>

3. 创建自定义 Vue 节点

在 src/components/CellNode.vue 中，实现自定义的 Vue 节点组件。以下是代码：

<template><div style="background-color: #ffffff;"><el-table :data="formData.formField" style="width: 100%" height="250"><el-table-column label="资源名称" :formatter="() => formData.entity_name_CN"></el-table-column><el-table-column prop="cname" label="中文名"></el-table-column><el-table-column prop="ename" label="英文名"></el-table-column><el-table-column prop="efType" label="类型"></el-table-column></el-table></div>
</template><script>
export default {name: 'CellNode',inject: ['getNode'],data() {return {node: null,formData: {entity_name_CN: '',entity_name_EN: '',formField: [{ cname: '', ename: '', efType: '' }],},};},mounted() {const node = this.getNode();this.node = node;node.on('change:data', (data) => {if (data.cell && data.cell.data) {this.formData = node.getData();}});},
};

## 4. 注册自定义节点 在主组件中，使用 @antv/x6-vue-shape 注册自定义的 Vue 节点：

import { register } from '@antv/x6-vue-shape';
import CellNode from './CellNode.vue';register({shape: 'CellNode',width: 300,height: 250,component: CellNode,
});

5. 样式优化
   在 src/styles/index.scss 中，添加全局样式：

.flow-container {width: 100%;height: 100%;display: flex;flex-direction: column;.flow-nav {display: flex;align-items: center;margin-bottom: 5px;.add-entity {border-radius: 6px;background: rgba(64, 158, 255, 0.7);border-color: #409eff;border-style: dashed;text-align: center;color: #fff;font-size: 14px;padding: 5px;box-sizing: content-box;width: 100px;cursor: pointer;}}.flow-content {flex: 1;}
}

四、运行项目

完成以上步骤后，运行项目：

npm run serve

打开浏览器访问 http://localhost:8080，你将看到一个支持拖拽添加节点、动态字段编辑的流程图编辑器。

五、总结

    通过 AntV X6 和 ElementUI 的结合，我们实现了一个功能丰富的流程图编辑器。AntV X6 提供了强大的图形化能力，ElementUI 提供了丰富的 UI 组件，两者结合可以快速搭建出高效的可视化工具。

完整代码

Graph.vue代码

// Graph.vue
<template><div class="flow-container"><!-- 导航栏 --><div class="flow-nav"><div class="add-entity" @mousedown="startDrag">添加实体</div><el-button type="primary" style="margin-left: 10px" plain  size="medium">保存</el-button><el-button type="warning" style="margin-left: 10px" plain size="medium">清空</el-button><el-button type="success" style="margin-left: 10px" plain  size="medium">导出</el-button><el-upload accept=".JSON" :on-progress="handleOnProgress" action="" :show-file-list="false"><el-button plain size="primary" style="margin-left: 10px">导入</el-button></el-upload></div><!-- 画布 --><div class="flow-content" ><div id="container"></div></div><!-- 实体编辑对话框 --><el-dialog class="dialog-box" title="新增实体" :visible.sync="dialogVisible" width="45%"  :before-close="handleClose" append-to-body="false"><div class="content-wrapper"><div class="primary-title">基本信息</div><el-formref="form":model="formData"label-width="130px":rules="rules"size="small"><el-form-item prop="entity_name_CN" label="逻辑实体中文名"><el-input v-model="formData.entity_name_CN" clearable></el-input></el-form-item><el-form-item prop="entity_name_EN" label="逻辑实体英文名"><el-input v-model="formData.entity_name_EN" clearable></el-input></el-form-item><div class="field-container"><div class="field-container__title"><div class="primary-title">字段信息</div><div class="field-operation"><el-buttontype="primary"size="small"icon="el-icon-plus"@click="addField">新增一行</el-button></div></div><el-table :data="formData.formField" label-position="center" height="250"><el-table-column type="index" width="50" label="序号" align="center"></el-table-column><el-table-columnproperty="cname"label="字段中文名"width="150"align="center"><template v-slot:default="{ $index }" ><el-input size="small" v-model="formData.formField[$index].cname"></el-input></template></el-table-column><el-table-columnproperty="ename"label="字段英文名"width="200"align="center"><template v-slot:default="{ $index }" ><el-input size="small" v-model="formData.formField[$index].ename"></el-input></template></el-table-column><el-table-columnproperty="efType"label="字段类型"align="center"><template v-slot:default="{ $index }"><el-selectv-model="formData.formField[$index].efType"default-first-optionplaceholder="请选择字段类型"clearablesize="small"><el-optionv-for="item in options":key="item":label="item":value="item"></el-option></el-select></template></el-table-column><el-table-column label="操作" fixed="right" align="center" width="80"><template v-slot:default="{ $index }"><el-buttontype="danger"size="small"@click="handleFieldDelete($index)">删除</el-button></template></el-table-column></el-table></div></el-form></div><span slot="footer" class="dialog-footer"><el-button @click="dialogVisible = false">取 消</el-button><el-button type="primary" @click="onSubmit(formData)">确 定</el-button></span></el-dialog></div>
</template><script>
// import index from '../../index.js'
import { Graph, Shape } from '@antv/x6'
import { Dnd } from '@antv/x6-plugin-dnd'
import { register } from '@antv/x6-vue-shape'
import CellNode from './components/cellNode.vue'// 画布配置
const config = {container: null,width: '100%',height: '100%',autoResize: true,// 拖拽画布panning: true,mousewheel: true,connecting: {snap: true, // 是否开启连线自动吸附highlight: true, // 是否高亮显示连线router: 'manhattan',connectionPoint: 'anchor',anchor: 'center',allowBlank: false,// 不允许创建循环连线，即边的起始节点和终止节点为同一节点allowEdge: false,// 不允许起点终点相同allowLoop: false,//  是否允许边连接到非节点上allowNode: false,// 起始和终止节点的相同连接桩之间只允许创建一条边allowMulti: 'witPort'},background: {color: '#F2F7FA'},grid: {visible: true,type: 'doubleMesh',args: [{color: '#eee', // 主网格线颜色thickness: 1 // 主网格线宽度},{color: '#ddd', // 次网格线颜色thickness: 1, // 次网格线宽度factor: 4 // 主次网格线间隔}]}
}
// 连接桩配置
const ports = {groups: {// 对话框需要的一些外部数据right: {position: 'right',attrs: {circle: {r: 5,magnet: true,stroke: '#5F95FF',strokeWidth: 1,fill: '#fff'}}},left: {position: 'left',attrs: {circle: {r: 5,magnet: true,stroke: '#5F95FF',strokeWidth: 1,fill: '#fff'}}}}
}
// 注册HTML节点
Shape.HTML.register({shape: 'custom-html',width: 160,height: 80,effect: ['data'],html (formData) {const data = formDataconst div = document.createElement('div')div.className = 'custom-html'const span1 = document.createElement('span')const span2 = document.createElement('span')const span3 = document.createElement('span')span1.innerText = '1111'span2.innerText = '2222'span3.innerText = '3333'div.appendChild(span1)div.appendChild(span2)div.appendChild(span3)return div}
})
// 注册Vue节点
register({shape: 'CellNode',width: 300,height: 250,component: CellNode,ports: {...ports,items: [{ group: 'left' }, { group: 'right' }]}
})
// 注册边
Graph.registerEdge('dag-edge',{inherit: 'edge',attrs: {line: {stroke: '#C2C8D5',strokeWidth: 1,targetMarker: null}}},true
)export default {name: 'vue-flow',data () {return {graph: null,currentEdge: null,dnd: null,dialogVisible: false,currentDragNode: null,// 对话框类型 编辑/新增formData: {entity_name_CN: '',entity_name_EN: '',// field_list: [],formField: [{cname: '',ename: '',efType: ''}]},options: ['STRING','NUMBER','BOOLEAN','DATE','EMAIL','URL','ARRAY','OBJECT','TEXTAREA','SELECT','RADIO','CHECKBOX','PASSWORD','FILE','IMAGE','RANGE','COLOR','TEL','SEARCH','DATETIME','DATETIME_LOCAL','MONTH','WEEK','TIME','HIDDEN'],rules: {entity_name_CN: [{ required: true, trigger: 'blur', message: '请输入逻辑实体中文名' }],entity_name_EN: [{ required: true, trigger: 'blur', message: '请输入逻辑实体英文名' }]}}},provide () {return {// 要用箭头函数保证this在其他组件获取正确getGraph: () => {return this.graph}}},mounted () {this.$nextTick(() => {this.initGraph()})},methods: {initGraph () {// 容器domconst container = document.getElementById('container')config.container = container// 实例化画布this.graph = new Graph(config)// 实例化拖拽节点const dnd = new Dnd({target: this.graph,validateNode: (node) => {this.currentDragNode = nodethis.dialogVisible = truereturn false}})this.dnd = dndthis.graph.centerContent() // 居中显示},startDrag (e) {const node = this.graph.createNode({shape: 'CellNode'})this.dnd.start(node, e)},handleClose (done) {this.$confirm('确认关闭？').then(_ => {done()}).catch(_ => {})},// 添加节点addNode (node) {return this.graph.addNode(node)},onSubmit (data) {this.dialogVisible = falseif (this.currentDragNode) {const node = this.addNode(this.currentDragNode)const dataSource = {...data}// TODO 有异步问题需要处理先写死200mssetTimeout(() => {node.setData(dataSource)}, 200)}},addField () {this.formData.formField.push({cname: '',ename: '',efType: ''})},handleFieldDelete () {this.formData.formField.splice(0, 1)}}
}
</script><style lang="scss">
$height: 40px;
.custom-html {display: flex;width: 100%;height: 100%;align-items: center;background-color: #fff;span {display: inline-block;height: $height;line-height: $height;border: 1px solid #0f7bcc;text-align: center;min-width: 0;flex: 1;}
}.flow-container {width: 100%;height: 100%;display: flex;flex-direction: column;.flow-nav {display: flex;align-items: center;margin-bottom: 5px;.add-entity {border-radius: 6px;background: rgba(64, 158, 255, 0.7);background-clip: padding-box;border-color: #409eff;border-style: dashed;text-align: center;color: #fff;font-size: 14px;padding: 5px;box-sizing: content-box;width: 100px;cursor: pointer;}}.flow-content {flex: 1;}.my-selecting {border: 1px dashed #40ff7c;background-color: #0f7bcc;}.x6-widget-selection-box {border: 0px dashed rgba(0, 0, 0, 0);box-shadow: 1px 1px 10px 0 rgba(0, 0, 0, 0.3);border-radius: 6px;// background-color: #0F7BCC;// opacity: 0.1;}.x6-widget-selection-inner {opacity: 0.1;border: 5px solid #000000;background-color: #0f7bcc;}}
.dialog-box{// width: 600%;// height: 800px;.el-dialog__title{color:#fff;font-size: 18px;
}.content-wrapper {padding:15px;.primary-title {font-size: 18px;font-weight: 700;padding-bottom: 10px;}.field-container {&__title {display: flex;justify-content: space-between;}}
}
}
</style>

cellNode.vue代码

<template><div style="background-color:  #ffffff;"><el-table:data="formData.formField"style="width: 100%"height="250"><el-table-column :label="`资源名称：${formData.entity_name_CN}`"><el-table-columnprop="cname"label="中文名"></el-table-column><el-table-columnprop="ename"label="英文名"></el-table-column><el-table-columnprop="efType"label="类型"></el-table-column></el-table-column></el-table></div>
</template><script>
export default {name: 'CellNode',inject: ['getNode'],data () {return {// 当前实体节点node: null,formData: {entity_name_CN: '',entity_name_EN: '',formField: [{cname: '',ename: '',efType: ''}]}}},mounted () {// 获取node节点const node = this.getNode()this.node = node// 节点data改变监听node.on('change:data', (data) => {if (data.cell && data.cell.data) {this.formData = node.getData()console.log('🚀 ~ :', this.formData)}})}
}
</script>