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Application Files Uploaded Initially.
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‎package.json‎

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{
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"name": "connectors-app",
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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-diagrams": "^26.1.35",
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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": "^16.18.101",
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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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.App {
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text-align: center;
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}
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.App-logo {
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height: 40vmin;
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pointer-events: none;
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}
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@media (prefers-reduced-motion: no-preference) {
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.App-logo {
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animation: App-logo-spin infinite 20s linear;
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}
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}
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.App-header {
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background-color: #282c34;
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min-height: 100vh;
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display: flex;
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flex-direction: column;
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align-items: center;
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justify-content: center;
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font-size: calc(10px + 2vmin);
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color: white;
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}
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.App-link {
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color: #61dafb;
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}
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@keyframes App-logo-spin {
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from {
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transform: rotate(0deg);
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}
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to {
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transform: rotate(360deg);
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}
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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 { DiagramComponent, NodeModel, ConnectorModel, DiagramTools} from "@syncfusion/ej2-react-diagrams";
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import './App.css';
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import {useRef, useState} from 'react';
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function App() {
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const diagramRef = useRef<DiagramComponent>(null);
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const nodeCollection : NodeModel[] = [
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{
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id: 'node1',
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width: 160,
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height: 60,
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offsetX: 500,
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offsetY: 190,
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shape:{
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shape:"Rectangle",
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type:"Basic"
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},
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style:{
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fill:"#32a899",
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strokeColor:"#32a899"
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}
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},
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{
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id: 'node2',
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width: 200,
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height: 60,
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offsetX: 700,
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offsetY: 400,
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shape:{
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shape:"Parallelogram",
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type:"Basic"
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},
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style:{
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fill:"#32a899",
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strokeColor:"#32a899"
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}
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},
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{
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id: 'node3',
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width: 160,
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height: 60,
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offsetX: 750,
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offsetY: 300,
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shape:{
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shape:"Ellipse",
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type:"Basic"
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},
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style:{
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fill:"#32a899",
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strokeColor:"#32a899"
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}
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}
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]
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const [connectorCollection, setConnectorCollection ] = useState<ConnectorModel[]>([
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{
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id:'connector1',
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sourceID:'node1',
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targetID :'node2',
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type:"Straight" //"Orthogonal"
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}
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]);
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/**
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* Add a Connector when used
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*/
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const addConnector = () =>
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{
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const newConnector : ConnectorModel = {
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id:'connector2',
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sourceID:'node2',
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targetID :'node3'
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}
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setConnectorCollection([...connectorCollection,newConnector]);
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}
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/**
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* Multi Functional method. Can customize a connector style, remove connector and can enable drawing connectors.
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*/
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const editConnector = () =>{
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// if(diagramRef.current){
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// if(diagramRef.current.tool === DiagramTools.ContinuousDraw){
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// diagramRef.current.tool = DiagramTools.Default;
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// }
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// else{
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// diagramRef.current.tool = DiagramTools.ContinuousDraw;
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// diagramRef.current.drawingObject = {
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// type : 'Straight',
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// id:'drawn_connector',
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// style:{strokeColor:'black'}
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// }
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// }
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// }
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if(connectorCollection.length > 0){
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const newConnectorCollection = [...connectorCollection];
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const updatedConnector = {
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...newConnectorCollection[0],
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style :{
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...newConnectorCollection[0].style,
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strokeColor : 'red'
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}
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}
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newConnectorCollection[0] = updatedConnector;
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setConnectorCollection(newConnectorCollection);
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// diagramRef.current?.remove(connectorCollection[0]);
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// const newConnectors = connectorCollection.splice(1);
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// setConnectorCollection(newConnectors);
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}
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}
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return (
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<div>
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<div>
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<button onClick={addConnector}> Add Connector</button>
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<button onClick={editConnector}>Edit Connector</button>
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</div>
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<DiagramComponent
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id="container"
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ref={diagramRef}
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width={"100%"}
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height={"750px"}
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nodes={nodeCollection}
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connectors={connectorCollection}
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/>
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</div>
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);
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}
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export default App;

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