React Diagram - Read Only Mode

The Diagram component can operate in Read Only mode. In this mode, users are not permitted to edit a diagram; therefore, most of the UI elements are disabled. It is for this reason that the Toolbox and Properties panel in this demo are hidden.

To switch the Diagram to Read Only mode, set the readOnly property to true.

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TS JS

Backend API

import React, { useEffect, useRef } from 'react'; import Diagram, { DiagramRef } from 'devextreme-react/diagram'; import 'whatwg-fetch'; export default function App() { const diagramRef = useRef<DiagramRef>(null); useEffect(() => { const diagram = diagramRef.current.instance(); fetch('../../../../data/diagram-structure.json') .then((response) => response.json()) .then((json) => { diagram.import(JSON.stringify(json)); }) .catch(() => { throw new Error('Data Loading Error'); }); }, []); return ( <Diagram id="diagram" ref={diagramRef} readOnly={true}> </Diagram> ); }

import React, { useEffect, useRef } from 'react'; import Diagram from 'devextreme-react/diagram'; import 'whatwg-fetch'; export default function App() { const diagramRef = useRef(null); useEffect(() => { const diagram = diagramRef.current.instance(); fetch('../../../../data/diagram-structure.json') .then((response) => response.json()) .then((json) => { diagram.import(JSON.stringify(json)); }) .catch(() => { throw new Error('Data Loading Error'); }); }, []); return ( <Diagram id="diagram" ref={diagramRef} readOnly={true} ></Diagram> ); }

import React from 'react'; import ReactDOM from 'react-dom'; import App from './App.tsx'; ReactDOM.render( <App />, document.getElementById('app'), );

import React from 'react'; import ReactDOM from 'react-dom'; import App from './App.js'; ReactDOM.render(<App />, document.getElementById('app'));

{ "page": { "width": 11906, "height": 8391, "pageColor": "white", "pageWidth": 8391, "pageHeight": 11906, "pageLandscape": true, "units": 0 }, "connectors": [], "shapes": [ { "key": "0", "locked": false, "zIndex": 0, "type": "verticalContainer", "text": "Development", "x": 720, "y": 720, "width": 10440.000000000002, "height": 7020, "childKeys": [ "1", "2", "4", "3" ] }, { "key": "1", "locked": false, "zIndex": 0, "type": "verticalContainer", "text": "ASP.NET Team", "x": 1080, "y": 1440, "width": 2160, "height": 5760, "childKeys": [ "5", "6" ] }, { "key": "2", "locked": false, "zIndex": 0, "type": "verticalContainer", "text": "Javascript Team", "x": 3600, "y": 1440, "width": 2160, "height": 5760, "childKeys": [ "7", "8" ] }, { "key": "3", "locked": false, "zIndex": 0, "type": "verticalContainer", "text": "WPF Team", "x": 6120, "y": 1440, "width": 2160, "height": 5760, "childKeys": [ "9", "10", "11" ] }, { "key": "4", "locked": false, "zIndex": 0, "type": "verticalContainer", "text": "WinForms Team", "x": 8640, "y": 1440, "width": 2160, "height": 5760, "childKeys": [ "12", "13" ] }, { "key": "5", "dataKey": "119", "locked": false, "zIndex": 0, "type": "rectangle", "text": "Laurence\nLebihan", "x": 1440, "y": 2160, "width": 1440, "height": 1080 }, { "key": "6", "dataKey": "120", "locked": false, "zIndex": 0, "type": "rectangle", "text": "Elizabeth\nLincoln", "x": 1440, "y": 3600, "width": 1440, "height": 1080 }, { "key": "7", "dataKey": "122", "locked": false, "zIndex": 0, "type": "rectangle", "text": "Patricio\nSimpson", "x": 3960, "y": 2160, "width": 1440, "height": 1080 }, { "key": "8", "dataKey": "123", "locked": false, "zIndex": 0, "type": "rectangle", "text": "Francisco\nChang", "x": 3960, "y": 3600, "width": 1440, "height": 1080 }, { "key": "9", "dataKey": "115", "locked": false, "zIndex": 0, "type": "rectangle", "text": "Christina\nBerglund", "x": 6480, "y": 2160, "width": 1440, "height": 1080 }, { "key": "10", "dataKey": "116", "locked": false, "zIndex": 0, "type": "rectangle", "text": "Hanna\nMoos", "x": 6480, "y": 3600, "width": 1440, "height": 1080 }, { "key": "11", "dataKey": "117", "locked": false, "zIndex": 0, "type": "rectangle", "text": "Frederique\nCiteaux", "x": 6480, "y": 5040, "width": 1440, "height": 1080 }, { "key": "12", "dataKey": "112", "locked": false, "zIndex": 0, "type": "rectangle", "text": "Ana\nTrujillo", "x": 9000, "y": 2160, "width": 1440, "height": 1080 }, { "key": "13", "dataKey": "113", "locked": false, "zIndex": 0, "type": "rectangle", "text": "Antonio\nMoreno", "x": 9000, "y": 3600, "width": 1440, "height": 1080 } ] }

<!DOCTYPE html> <html lang="en"> <head> <title>DevExtreme Demo</title> <meta http-equiv="X-UA-Compatible" content="IE=edge" /> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=5.0" /> <link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/24.2.3/css/dx-diagram.min.css" /> <link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/24.2.3/css/dx.light.css" /> <link rel="stylesheet" type="text/css" href="https://maxcdn.bootstrapcdn.com/font-awesome/4.6.3/css/font-awesome.min.css" /> <link rel="stylesheet" type="text/css" href="styles.css" /> <script src="https://unpkg.com/core-js@2.6.12/client/shim.min.js"></script> <script src="https://unpkg.com/systemjs@0.21.3/dist/system.js"></script> <script type="text/javascript" src="config.js"></script> <script type="text/javascript"> System.import("./index.tsx"); </script> </head> <body class="dx-viewport"> <div class="demo-container"> <div id="app"></div> </div> </body> </html>

#diagram { height: 700px; }