vue使用jsplumb 实现绘制流程图并可进行连接、保存、修改、删除 -Go服务器开发

使用 Vue.js 和 jsPlumb 来实现一个可绘制、连接、保存、修改和删除的流程图，主要可以分为以下几个步骤。这里提供一个基本的示例来帮助你入手。

1. 安装 jsPlumb

首先，你需要安装 jsPlumb。如果你还没有安装，可以通过 npm 安装：

npm install jsplumb --save

2. 创建 Vue 组件

创建一个 Vue 组件，比如 Flowchart.vue。

<template>
  <div id="flowchart" ref="flowchart" class="flowchart">
    <div v-for="node in nodes" :key="node.id" 
         :style="{ left: node.x + 'px', top: node.y + 'px' }" 
         class="node">
      {{ node.label }}
      <button @click="deleteNode(node.id)">Delete</button>
    </div>
    <button @click="addNode">Add Node</button>
  </div>
</template>
<script>
import { jsPlumb } from "jsplumb";
export default {
  data() {
    return {
      nodes: [],
      nextId: 0,
    };
  },
  
  mounted() {
    this.initJsPlumb();
  },
  methods: {
    initJsPlumb() {
      jsPlumb.ready(() => {
        jsPlumb.setContainer(this.$refs.flowchart);
        
        // Add connections if needed here
        // Example of adding a new connection
        // jsPlumb.connect({ source: "sourceElement", target: "targetElement" });
      });
    },
    addNode() {
      const newNode = {
        id: this.nextId++,
        label: `Node ${this.nextId}`,
        x: Math.random() * 400, // Random position for demo
        y: Math.random() * 400,
      };
      this.nodes.push(newNode);
      
      this.initJsPlumb(); // re-initialize to apply changes
    },
    deleteNode(id) {
      this.nodes = this.nodes.filter(node => node.id !== id);
      
      // You might also want to remove connections related to the deleted node here
      
      this.initJsPlumb(); // re-initialize to apply changes
    },
    saveFlowchart() {
      // Implement saving logic (e.g., send the current state to a server)
      
      console.log("Saving flowchart:", JSON.stringify(this.nodes));
    }
    
   },
};
</script>
<style scoped>
.flowchart {
  position: relative;
  width: 500px;
  height: 500px;
}
.node {
  position: absolute;
  border: solid 1px #000;
  padding:10px;
}
</style>