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Anto Gibson
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Initial Sample commit
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‎package.json

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{
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"name": "diagram-export",
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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": "^27.1.53",
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"@syncfusion/ej2-react-inputs": "^27.1.50",
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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": "^16.18.114",
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"@types/react": "^18.3.11",
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"@types/react-dom": "^18.3.1",
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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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.container{
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margin-left: 250px;
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margin-top: 5px;
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}
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.button-container{
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margin-left:15%;
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}
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.button{
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padding: 5px 10px;
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margin: 20px 10px 0px 20px;
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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 './App.css';
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import { DiagramComponent, PrintAndExport,
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NodeModel, ConnectorModel,
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Inject
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} from '@syncfusion/ej2-react-diagrams';
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import { UploaderComponent } from '@syncfusion/ej2-react-inputs';
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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 [diagramData, setDiagramData] = useState<string | undefined>();
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const nodes : NodeModel[] = [
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{
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id: "startNode",
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offsetX: 440,
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offsetY: 60,
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shape: { type: "Flow", shape: "Terminator" },
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annotations: [{ content: 'Start', style: { color: 'white' } }]
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},
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{
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id: "inputNode",
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offsetX: 440,
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offsetY: 180,
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shape: { type: "Flow", shape: "Data" },
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annotations: [{ content: 'Enter a number', style: { color: 'white' } }]
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},
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{
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id: "decisionNode",
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offsetX: 440,
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offsetY: 300,
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shape: { type: "Flow", shape: "Decision" },
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annotations: [{ content: 'N divisible by 2 ?', style: { color: 'white' } }]
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},
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{
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id: "processEvenNode",
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offsetX: 700,
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offsetY: 300,
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shape: { type: "Flow", shape: "Process" },
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annotations: [{ content: 'N is Even', style: { color: 'white' } }]
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},
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{
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id: "processOddNode",
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offsetX: 440,
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offsetY: 420,
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shape: { type: "Flow", shape: "Process" },
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annotations: [{ content: 'N is Odd', style: { color: 'white' } }]
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},
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{
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id: "endNode",
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offsetX: 440,
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offsetY: 540,
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shape: { type: "Flow", shape: "Terminator" },
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annotations: [{ content: 'End', style: { color: 'white' } }]
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}
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];
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const connectors : ConnectorModel[]= [
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{
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id: 'startToInputConnector',
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sourceID: 'startNode',
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targetID: 'inputNode'
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},
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{
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id: 'inputToDecisionConnector',
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sourceID: 'inputNode',
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targetID: 'decisionNode'
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},
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{
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id: 'decisionToProcessEvenConnector',
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sourceID: 'decisionNode',
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targetID: 'processEvenNode',
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annotations: [{ content: 'true', alignment: 'Before', displacement: { x: 5, y: 5 } }]
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},
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{
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id: 'decisionToProcessOddConnector',
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sourceID: 'decisionNode',
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targetID: 'processOddNode',
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annotations: [{ content: 'false', alignment: 'After', displacement: { x: 5, y: 5 } }]
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},
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{
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id: 'processOddToEndConnector',
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sourceID: 'processOddNode',
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targetID: 'endNode'
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},
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{
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id: 'processEvenToEndConnector',
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sourceID: 'processEvenNode',
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targetID: 'endNode',
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type: "Orthogonal",
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segments: [{ type: "Orthogonal", direction: "Bottom", length: 200 }]
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}
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];
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const nodeDefaults =(node:NodeModel) =>{
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node.height = 60;
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node.width = 150;
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node.style = { fill: '#6495ED' };
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return node;
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}
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const asyncSettings = {
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saveUrl: "https://services.syncfusion.com/react/production/api/FileUploader/Save"
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}
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const onSave = ()=>{
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const saveData = diagramRef.current?.saveDiagram()
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// setDiagramData(saveData);
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// console.log(saveData);
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saveData && download(saveData);
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}
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const onLoad = ()=>{
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// if(diagramData){
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// diagramRef.current?.loadDiagram(diagramData);
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// }
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document.querySelector('.e-file-select-wrap')?.querySelector('button')?.click();
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}
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const download = (JSONData : string) =>{
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const a = document.createElement('a');
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a.href = "data:text/json;charset=utf-8," + encodeURIComponent(JSONData);
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a.download = 'Diagram.json';
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document.body.appendChild(a);
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a.click();
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document.body.removeChild(a);
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}
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const fileUploadSuccess = (args : any) =>{
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const reader = new FileReader();
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reader.onloadend = () =>{
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diagramRef.current?.loadDiagram(reader.result as string);
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}
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reader.readAsText(args.file.rawFile);
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}
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const onExport = ()=>{
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diagramRef.current?.exportDiagram({
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mode:'Download', format:'PNG',
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region: 'PageSettings',
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pageHeight:800, pageWidth: 800
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})
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}
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const onPrint = ()=>{
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diagramRef.current?.print({ region:'PageSettings',
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pageHeight:800, pageWidth: 800
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})
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}
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return (
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<div className="app">
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<div className='button-container'>
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<button className='button' onClick={onSave}>Save</button>
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<button className='button' onClick={onLoad}>Load</button>
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<button className='button' onClick={onExport}>Export</button>
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<button className='button' onClick={onPrint}>Print</button>
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</div>
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<div style={{display:"none"}}>
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<UploaderComponent
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asyncSettings={asyncSettings}
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success={fileUploadSuccess}
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></UploaderComponent>
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</div>
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<div className='container'>
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<DiagramComponent
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ref={diagramRef}
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width={'902px'}
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height={'602px'}
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nodes={nodes}
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connectors={connectors}
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getNodeDefaults={nodeDefaults}
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>
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<Inject services={[PrintAndExport]} />
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</DiagramComponent>
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</div>
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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';

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