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Anto Gibson
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‎package.json

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{
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"name": "group-nodes",
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"version": "0.1.0",
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"private": true,
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"dependencies": {
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"@syncfusion/ej2-react-buttons": "^27.1.50",
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"@syncfusion/ej2-react-diagrams": "^26.2.8",
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"@testing-library/jest-dom": "^5.17.0",
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"@testing-library/react": "^13.4.0",
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"@testing-library/user-event": "^13.5.0",
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"@types/jest": "^27.5.2",
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"@types/node": "^16.18.104",
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"@types/react": "^18.3.3",
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"@types/react-dom": "^18.3.0",
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"react": "^18.3.1",
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"react-dom": "^18.3.1",
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"react-scripts": "5.0.1",
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"typescript": "^4.9.5",
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"web-vitals": "^2.1.4"
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},
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"scripts": {
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"start": "react-scripts start",
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"build": "react-scripts build",
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"test": "react-scripts test",
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"eject": "react-scripts eject"
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},
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"eslintConfig": {
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"extends": [
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"react-app",
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"react-app/jest"
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]
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},
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"browserslist": {
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"production": [
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">0.2%",
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"not dead",
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"not op_mini all"
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],
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"development": [
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"last 1 chrome version",
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"last 1 firefox version",
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"last 1 safari version"
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]
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}
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}

‎public/favicon.ico

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‎public/index.html

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<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="utf-8" />
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<link rel="icon" href="%PUBLIC_URL%/favicon.ico" />
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<meta name="viewport" content="width=device-width, initial-scale=1" />
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<meta name="theme-color" content="#000000" />
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<meta
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name="description"
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content="Web site created using create-react-app"
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/>
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<link rel="apple-touch-icon" href="%PUBLIC_URL%/logo192.png" />
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<!--
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manifest.json provides metadata used when your web app is installed on a
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user's mobile device or desktop. See https://developers.google.com/web/fundamentals/web-app-manifest/
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-->
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<link rel="manifest" href="%PUBLIC_URL%/manifest.json" />
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<!--
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Notice the use of %PUBLIC_URL% in the tags above.
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It will be replaced with the URL of the `public` folder during the build.
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Only files inside the `public` folder can be referenced from the HTML.
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Unlike "/favicon.ico" or "favicon.ico", "%PUBLIC_URL%/favicon.ico" will
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work correctly both with client-side routing and a non-root public URL.
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Learn how to configure a non-root public URL by running `npm run build`.
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-->
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<title>React App</title>
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</head>
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<body>
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<noscript>You need to enable JavaScript to run this app.</noscript>
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<div id="root"></div>
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<!--
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This HTML file is a template.
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If you open it directly in the browser, you will see an empty page.
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You can add webfonts, meta tags, or analytics to this file.
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The build step will place the bundled scripts into the <body> tag.
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To begin the development, run `npm start` or `yarn start`.
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To create a production bundle, use `npm run build` or `yarn build`.
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-->
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</body>
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</html>

‎public/logo192.png

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‎public/logo512.png

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‎public/manifest.json

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{
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"short_name": "React App",
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"name": "Create React App Sample",
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"icons": [
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{
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"src": "favicon.ico",
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"sizes": "64x64 32x32 24x24 16x16",
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"type": "image/x-icon"
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},
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{
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"src": "logo192.png",
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"type": "image/png",
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"sizes": "192x192"
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},
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{
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"src": "logo512.png",
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"type": "image/png",
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"sizes": "512x512"
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}
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],
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"start_url": ".",
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"display": "standalone",
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"theme_color": "#000000",
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"background_color": "#ffffff"
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}

‎public/robots.txt

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# https://www.robotstxt.org/robotstxt.html
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User-agent: *
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Disallow:

‎src/App.css

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@import "../node_modules/@syncfusion/ej2-diagrams/styles/material.css";
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@import "../node_modules/@syncfusion/ej2-base/styles/material.css";
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@import "../node_modules/@syncfusion/ej2-buttons/styles/material.css";
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.container{
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margin-top:10px;
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margin-bottom:10px;
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}
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.button{
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margin:0px 10px;
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}

‎src/App.test.tsx

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import React from 'react';
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import { render, screen } from '@testing-library/react';
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import App from './App';
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test('renders learn react link', () => {
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render(<App />);
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const linkElement = screen.getByText(/learn react/i);
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expect(linkElement).toBeInTheDocument();
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});

‎src/App.tsx

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import React, { useRef, useEffect } from 'react';
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import './App.css';
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import { DiagramComponent, NodeModel, ConnectorModel } from '@syncfusion/ej2-react-diagrams';
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import { ButtonComponent } from '@syncfusion/ej2-react-buttons';
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const App: React.FC = () => {
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const diagramInstance = useRef<DiagramComponent>(null);
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const connectors: ConnectorModel[] = [
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{ id: 'connector1', sourceID: 'node1', targetID: 'node2' },
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{ id: 'connector2', sourceID: 'node2', targetID: 'node3' },
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{ id: 'connector3', sourceID: 'node3', targetID: 'node1' },
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];
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const nodes: NodeModel[] = [
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{ id: 'node1', offsetX: 375, offsetY: 130,
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height: 60, width: 150,
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annotations: [{ content: 'Node 1' }]
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},
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{ id: 'node2', offsetX: 675, offsetY: 130,
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height: 60, width: 150,
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annotations: [{ content: 'Node 2' }]
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},
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{ id: 'node3', offsetX: 525, offsetY: 270,
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height: 60, width: 150,
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annotations: [{ content: 'Node 3' }]
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},
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{ id: 'node4', offsetX: 525, offsetY: 370,
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height: 60, width: 150,
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annotations: [{ content: 'Node 4' }]
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},
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];
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const group = {
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id : 'group1',
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children : [ 'node1', 'node2', 'connector1', 'connector2',
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'connector3', 'node3'
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],
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padding : {top : 20, bottom : 20, left : 20, right : 20},
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style : { fill : 'Orange', strokeColor : 'Black', strokeWidth : 2},
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annotations: [{ content: 'Group 1'}]
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}
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const nestedGroup = {
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id : 'nestedGroup1',
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children : [ 'group1', 'node4'],
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padding : {top : 20, bottom : 20, left : 20, right : 20},
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style : { fill : 'Blue', strokeColor : 'Black', strokeWidth : 2},
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annotations: [{ content: 'Nested Group'}]
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}
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useEffect(()=>{
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if(diagramInstance.current){
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diagramInstance.current.add(group);
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diagramInstance.current.add(nestedGroup);
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}
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})
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const addChildNodeToGroup = () =>{
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if(diagramInstance.current){
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diagramInstance.current.addChildToGroup(group, 'node3');
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}
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}
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const UnGroup = () =>{
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if(diagramInstance.current){
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diagramInstance.current.unGroup();
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}
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}
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const updateGroup = () =>{
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if(diagramInstance.current){
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diagramInstance.current.nodes[3].offsetX = 300;
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diagramInstance.current.nodes[3].offsetY = 300;
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}
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}
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return (
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<div>
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<div className='container'>
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<ButtonComponent cssClass='button'
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onClick={addChildNodeToGroup}>Add Child Node to Group</ButtonComponent>
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<ButtonComponent cssClass='button'
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onClick={UnGroup}>UnGroup</ButtonComponent>
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<ButtonComponent cssClass='button'
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onClick={updateGroup}>Update Group</ButtonComponent>
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</div>
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<DiagramComponent
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ref={diagramInstance}
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width="100%" height="650px"
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nodes={nodes}
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connectors={connectors} />
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</div>
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);
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};
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export default App;

‎src/index.css

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body {
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margin: 0;
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font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen',
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'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue',
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sans-serif;
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-webkit-font-smoothing: antialiased;
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-moz-osx-font-smoothing: grayscale;
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}
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code {
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font-family: source-code-pro, Menlo, Monaco, Consolas, 'Courier New',
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monospace;
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}

‎src/index.tsx

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import React from 'react';
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import ReactDOM from 'react-dom/client';
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import './index.css';
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import App from './App';
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import reportWebVitals from './reportWebVitals';
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const root = ReactDOM.createRoot(
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document.getElementById('root') as HTMLElement
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);
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root.render(
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<React.StrictMode>
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<App />
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</React.StrictMode>
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);
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// If you want to start measuring performance in your app, pass a function
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// to log results (for example: reportWebVitals(console.log))
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// or send to an analytics endpoint. Learn more: https://bit.ly/CRA-vitals
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reportWebVitals();

‎src/logo.svg

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‎src/react-app-env.d.ts

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/// <reference types="react-scripts" />

‎src/reportWebVitals.ts

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import { ReportHandler } from 'web-vitals';
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const reportWebVitals = (onPerfEntry?: ReportHandler) => {
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if (onPerfEntry && onPerfEntry instanceof Function) {
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import('web-vitals').then(({ getCLS, getFID, getFCP, getLCP, getTTFB }) => {
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getCLS(onPerfEntry);
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getFID(onPerfEntry);
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getFCP(onPerfEntry);
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getLCP(onPerfEntry);
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getTTFB(onPerfEntry);
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});
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}
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};
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export default reportWebVitals;

‎src/setupTests.ts

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// jest-dom adds custom jest matchers for asserting on DOM nodes.
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// allows you to do things like:
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// expect(element).toHaveTextContent(/react/i)
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// learn more: https://github.com/testing-library/jest-dom
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import '@testing-library/jest-dom';

‎tsconfig.json

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{
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"compilerOptions": {
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"target": "es5",
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"lib": [
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"dom",
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"dom.iterable",
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"esnext"
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],
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"allowJs": true,
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"skipLibCheck": true,
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"esModuleInterop": true,
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"allowSyntheticDefaultImports": true,
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"strict": true,
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"forceConsistentCasingInFileNames": true,
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"noFallthroughCasesInSwitch": true,
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"module": "esnext",
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"moduleResolution": "node",
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"resolveJsonModule": true,
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"isolatedModules": true,
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"noEmit": true,
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"jsx": "react-jsx"
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},
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"include": [
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"src"
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]
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}

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