import React from 'react';
import Diagram, { CustomShape, Nodes, AutoLayout, ContextToolbox, Toolbox, PropertiesPanel, Group } from 'devextreme-react/diagram';
import notify from 'devextreme/ui/notify';
import ArrayStore from 'devextreme/data/array_store';
import service from './data.js';
class App extends React.Component {
constructor(props) {
super(props);
this.diagramRef = React.createRef();
this.orgItemsDataSource = new ArrayStore({
key: 'ID',
data: service.getOrgItems()
});
this.onRequestEditOperation = this.onRequestEditOperation.bind(this);
this.onRequestLayoutUpdate = this.onRequestLayoutUpdate.bind(this);
}
render() {
return (
<Diagram id="diagram" ref={this.diagramRef} onRequestEditOperation={this.onRequestEditOperation} onRequestLayoutUpdate={this.onRequestLayoutUpdate}>
<CustomShape category="items" type="root" baseType="octagon"
defaultText="Development" />
<CustomShape category="items" type="team" baseType="ellipse"
title="Team" defaultText="Team Name" />
<CustomShape category="items" type="employee" baseType="rectangle"
title="Employee" defaultText="Employee Name" />
<Nodes dataSource={this.orgItemsDataSource} keyExpr="ID" textExpr="Name" typeExpr="Type" parentKeyExpr="ParentID">
<AutoLayout type="tree" />
</Nodes>
<ContextToolbox shapeIconsPerRow={2} width={100} shapes={['team', 'employee']}>
</ContextToolbox>
<Toolbox shapeIconsPerRow={2}>
<Group title="Items" shapes={['team', 'employee']} />
</Toolbox>
<PropertiesPanel visibility="disabled">
</PropertiesPanel>
</Diagram>
);
}
showToast(text) {
notify({
position: { at: 'top', my: 'top', of: '#diagram', offset: '0 4' },
message: text,
type: 'warning',
delayTime: 2000
});
}
onRequestLayoutUpdate(e) {
for(var i = 0; i < e.changes.length; i++) {
if(e.changes[i].type === 'remove') {
e.allowed = true;
} else if(e.changes[i].data.ParentID !== undefined && e.changes[i].data.ParentID !== null) {
e.allowed = true;
}
}
}
onRequestEditOperation(e) {
var diagram = this.diagramRef.current.instance;
if(e.operation === 'addShape') {
if(e.args.shape.type !== 'employee' && e.args.shape.type !== 'team') {
if(e.reason !== 'checkUIElementAvailability') {
this.showToast('You can add only a \'Team\' or \'Employee\' shape.');
}
e.allowed = false;
}
}
else if(e.operation === 'deleteShape') {
if(e.args.shape.type === 'root') {
if(e.reason !== 'checkUIElementAvailability') {
this.showToast('You cannot delete the \'Development\' shape.');
}
e.allowed = false;
}
if(e.args.shape.type === 'team') {
for(var i = 0; i < e.args.shape.attachedConnectorIds.length; i++) {
if(diagram.getItemById(e.args.shape.attachedConnectorIds[i]).toId != e.args.shape.id) {
if(e.reason !== 'checkUIElementAvailability') {
this.showToast('You cannot delete a \'Team\' shape that has a child shape.');
}
e.allowed = false;
break;
}
}
}
}
else if(e.operation === 'resizeShape') {
if(e.args.newSize.width < 1 || e.args.newSize.height < 0.75) {
if(e.reason !== 'checkUIElementAvailability') {
this.showToast('The shape size is too small.');
}
e.allowed = false;
}
}
else if(e.operation === 'changeConnection') {
var shapeType = e.args.newShape && e.args.newShape.type;
if(shapeType === 'root' && e.args.connectorPosition === 'end') {
if(e.reason !== 'checkUIElementAvailability') {
this.showToast('The \'Development\' shape cannot have an incoming connection.');
}
e.allowed = false;
}
if(shapeType === 'employee' && e.args.connectorPosition === 'start') {
e.allowed = false;
}
}
else if(e.operation === 'changeConnectorPoints') {
if(e.args.newPoints.length > 2) {
if(e.reason !== 'checkUIElementAvailability') {
this.showToast('You cannot add points to a connector.');
}
e.allowed = false;
}
}
else if(e.operation === 'beforeChangeShapeText') {
if(e.args.shape.type === 'root') {
if(e.reason !== 'checkUIElementAvailability') {
this.showToast('You cannot change the \'Development\' shape\'s text.');
}
e.allowed = false;
}
}
else if(e.operation === 'changeShapeText') {
if(e.args.text === '') {
if(e.reason !== 'checkUIElementAvailability') {
this.showToast('A shape text cannot be empty.');
}
e.allowed = false;
}
}
else if(e.operation === 'beforeChangeConnectorText') {
e.allowed = false;
}
}
}
export default App;
import React from 'react';
import ReactDOM from 'react-dom';
import App from './App.js';
ReactDOM.render(
<App />,
document.getElementById('app')
);
<!DOCTYPE html>
<html>
<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=1.0" />
<link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/20.2.5/css/dx.common.css" />
<link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/20.2.5/css/dx.light.css" />
<link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/20.2.5/css/dx-diagram.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@2.4.1/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.js');
</script>
</head>
<body class="dx-viewport">
<div class="demo-container">
<div id="app"></div>
</div>
</body>
</html>
#diagram {
height: 600px;
}
var orgItems = [{
'ID': '106',
'Name': 'Development',
'Type': 'root'
}, {
'ID': '107',
'Name': 'WinForms Team',
'Type': 'team',
'ParentID': '106'
}, {
'ID': '109',
'Name': 'Javascript Team',
'Type': 'team',
'ParentID': '106'
}, {
'ID': '110',
'Name': 'ASP.NET Team',
'Type': 'team',
'ParentID': '106'
}, {
'ID': '112',
'Name': 'Ana Trujillo',
'Type': 'employee',
'ParentID': '107'
}, {
'ID': '113',
'Name': 'Antonio Moreno',
'Type': 'employee',
'ParentID': '107'
}, {
'ID': '115',
'Name': 'Christina Berglund',
'Type': 'employee',
'ParentID': '109'
}, {
'ID': '116',
'Name': 'Hanna Moos',
'Type': 'employee',
'ParentID': '109'
}, {
'ID': '119',
'Name': 'Laurence Lebihan',
'Type': 'employee',
'ParentID': '110'
}, {
'ID': '122',
'Name': 'Patricio Simpson',
'Type': 'employee',
'ParentID': '110'
}, {
'ID': '123',
'Name': 'Francisco Chang',
'Type': 'employee',
'ParentID': '110'
}];
export default {
getOrgItems() {
return orgItems;
}
};
System.config({
transpiler: 'plugin-babel',
meta: {
'devextreme/localization.js': {
"esModule": true
},
},
paths: {
'npm:': 'https://unpkg.com/'
},
defaultExtension: 'js',
map: {
'react': 'npm:react@16.14.0/umd/react.development.js',
'react-dom': 'npm:react-dom@16.14.0/umd/react-dom.development.js',
'prop-types': 'npm:prop-types@15.7.2/prop-types.js',
'rrule': 'npm:rrule@2.6.6/dist/es5/rrule.js',
'luxon': 'npm:luxon@1.25.0/build/global/luxon.min.js',
'es6-object-assign': 'npm:es6-object-assign@1.1.0',
'devextreme': 'npm:devextreme@20.2.5',
'devextreme-react': 'npm:devextreme-react@20.2.5',
'jszip': 'npm:jszip@3.5.0/dist/jszip.min.js',
'devextreme-quill': 'npm:devextreme-quill@0.9.8/dist/dx-quill.min.js',
'devexpress-diagram': 'npm:devexpress-diagram@2.0.11/dist/dx-diagram.js',
'devexpress-gantt': 'npm:devexpress-gantt@2.0.18/dist/dx-gantt.js',
'preact': 'npm:preact@10.5.11/dist/preact.js',
'preact/hooks': 'npm:preact@10.5.11/hooks/dist/hooks.js',
// SystemJS plugins
'plugin-babel': 'npm:systemjs-plugin-babel@0.0.25/plugin-babel.js',
'systemjs-babel-build': 'npm:systemjs-plugin-babel@0.0.25/systemjs-babel-browser.js'
},
packages: {
'devextreme': {
defaultExtension: 'js'
},
'devextreme-react': {
main: 'index.js'
},
'devextreme/events/utils': {
main: 'index'
},
'devextreme/events': {
main: 'index'
},
'es6-object-assign': {
main: './index.js',
defaultExtension: 'js'
}
},
babelOptions: {
sourceMaps: false,
stage0: true,
react: true
}
});