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Backend API
import React, { useCallback, useRef } from 'react';
import Diagram, {
CustomShape, Nodes, AutoLayout, ContextToolbox, Toolbox, PropertiesPanel, Group, DiagramTypes,
} from 'devextreme-react/diagram';
import notify from 'devextreme/ui/notify';
import ArrayStore from 'devextreme/data/array_store';
import service from './data.ts';
const shapes = ['team', 'employee'];
const orgItemsDataSource = new ArrayStore({
key: 'ID',
data: service.getOrgItems(),
});
function showToast(text: string) {
notify({
position: {
at: 'top', my: 'top', of: '#diagram', offset: '0 4',
},
message: text,
type: 'warning',
delayTime: 2000,
});
}
function onRequestLayoutUpdate(e: DiagramTypes.RequestLayoutUpdateEvent) {
for (let i = 0; i < e.changes.length; i += 1) {
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;
}
}
}
function itemStyleExpr(obj: { Type: string; }) {
if (obj.Type === 'root') {
return { fill: '#ffcfc3' };
}
if (obj.Type === 'team') {
return { fill: '#b7e3fe' };
}
return { fill: '#bbefcb' };
}
export default function App() {
const diagramRef = useRef(null);
const onRequestEditOperation = useCallback((e) => {
const diagram = diagramRef.current.instance();
if (e.operation === 'addShape') {
if (e.args.shape.type !== 'employee' && e.args.shape.type !== 'team') {
if (e.reason !== 'checkUIElementAvailability') {
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') {
showToast('You cannot delete the \'Development\' shape.');
}
e.allowed = false;
}
if (e.args.shape.type === 'team') {
for (let i = 0; i < e.args.shape.attachedConnectorIds.length; i += 1) {
if (diagram.getItemById(e.args.shape.attachedConnectorIds[i]).toId !== e.args.shape.id) {
if (e.reason !== 'checkUIElementAvailability') {
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') {
showToast('The shape size is too small.');
}
e.allowed = false;
}
} else if (e.operation === 'changeConnection') {
const shapeType = e.args.newShape && e.args.newShape.type;
if (shapeType === 'root' && e.args.connectorPosition === 'end') {
if (e.reason !== 'checkUIElementAvailability') {
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') {
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') {
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') {
showToast('A shape text cannot be empty.');
}
e.allowed = false;
}
} else if (e.operation === 'beforeChangeConnectorText') {
e.allowed = false;
}
}, []);
return (
<Diagram
id="diagram"
ref={diagramRef}
onRequestEditOperation={onRequestEditOperation}
onRequestLayoutUpdate={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={orgItemsDataSource}
keyExpr="ID"
textExpr="Name"
typeExpr="Type"
parentKeyExpr="ParentID"
styleExpr={itemStyleExpr}
>
<AutoLayout type="tree" />
</Nodes>
<ContextToolbox shapeIconsPerRow={2} width={100} shapes={shapes as any}>
</ContextToolbox>
<Toolbox shapeIconsPerRow={2}>
<Group title="Items" shapes={shapes as any} />
</Toolbox>
<PropertiesPanel visibility="disabled">
</PropertiesPanel>
</Diagram>
);
}
import React, { useCallback, useRef } 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';
const shapes = ['team', 'employee'];
const orgItemsDataSource = new ArrayStore({
key: 'ID',
data: service.getOrgItems(),
});
function showToast(text) {
notify({
position: {
at: 'top',
my: 'top',
of: '#diagram',
offset: '0 4',
},
message: text,
type: 'warning',
delayTime: 2000,
});
}
function onRequestLayoutUpdate(e) {
for (let i = 0; i < e.changes.length; i += 1) {
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;
}
}
}
function itemStyleExpr(obj) {
if (obj.Type === 'root') {
return { fill: '#ffcfc3' };
}
if (obj.Type === 'team') {
return { fill: '#b7e3fe' };
}
return { fill: '#bbefcb' };
}
export default function App() {
const diagramRef = useRef(null);
const onRequestEditOperation = useCallback((e) => {
const diagram = diagramRef.current.instance();
if (e.operation === 'addShape') {
if (e.args.shape.type !== 'employee' && e.args.shape.type !== 'team') {
if (e.reason !== 'checkUIElementAvailability') {
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') {
showToast("You cannot delete the 'Development' shape.");
}
e.allowed = false;
}
if (e.args.shape.type === 'team') {
for (let i = 0; i < e.args.shape.attachedConnectorIds.length; i += 1) {
if (diagram.getItemById(e.args.shape.attachedConnectorIds[i]).toId !== e.args.shape.id) {
if (e.reason !== 'checkUIElementAvailability') {
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') {
showToast('The shape size is too small.');
}
e.allowed = false;
}
} else if (e.operation === 'changeConnection') {
const shapeType = e.args.newShape && e.args.newShape.type;
if (shapeType === 'root' && e.args.connectorPosition === 'end') {
if (e.reason !== 'checkUIElementAvailability') {
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') {
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') {
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') {
showToast('A shape text cannot be empty.');
}
e.allowed = false;
}
} else if (e.operation === 'beforeChangeConnectorText') {
e.allowed = false;
}
}, []);
return (
<Diagram
id="diagram"
ref={diagramRef}
onRequestEditOperation={onRequestEditOperation}
onRequestLayoutUpdate={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={orgItemsDataSource}
keyExpr="ID"
textExpr="Name"
typeExpr="Type"
parentKeyExpr="ParentID"
styleExpr={itemStyleExpr}
>
<AutoLayout type="tree" />
</Nodes>
<ContextToolbox
shapeIconsPerRow={2}
width={100}
shapes={shapes}
></ContextToolbox>
<Toolbox shapeIconsPerRow={2}>
<Group
title="Items"
shapes={shapes}
/>
</Toolbox>
<PropertiesPanel visibility="disabled"></PropertiesPanel>
</Diagram>
);
}
import React from 'react';
import ReactDOM from 'react-dom';
import App from './App.tsx';
ReactDOM.render(
<App />,
document.getElementById('app'),
);
const 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;
},
};
window.exports = window.exports || {};
window.config = {
transpiler: 'ts',
typescriptOptions: {
module: 'system',
emitDecoratorMetadata: true,
experimentalDecorators: true,
jsx: 'react',
},
meta: {
'react': {
'esModule': true,
},
'typescript': {
'exports': 'ts',
},
'devextreme/time_zone_utils.js': {
'esModule': true,
},
'devextreme/localization.js': {
'esModule': true,
},
'devextreme/viz/palette.js': {
'esModule': true,
},
},
paths: {
'npm:': 'https://unpkg.com/',
},
defaultExtension: 'js',
map: {
'ts': 'npm:plugin-typescript@4.2.4/lib/plugin.js',
'typescript': 'npm:typescript@4.2.4/lib/typescript.js',
'react': 'npm:react@17.0.2/umd/react.development.js',
'react-dom': 'npm:react-dom@17.0.2/umd/react-dom.development.js',
'prop-types': 'npm:prop-types@15.8.1/prop-types.js',
'rrule': 'npm:rrule@2.6.4/dist/es5/rrule.js',
'luxon': 'npm:luxon@1.28.1/build/global/luxon.min.js',
'es6-object-assign': 'npm:es6-object-assign@1.1.0',
'devextreme': 'npm:devextreme@24.1.7/cjs',
'devextreme-react': 'npm:devextreme-react@24.1.7/cjs',
'jszip': 'npm:jszip@3.10.1/dist/jszip.min.js',
'devextreme-quill': 'npm:devextreme-quill@1.7.1/dist/dx-quill.min.js',
'devexpress-diagram': 'npm:devexpress-diagram@2.2.12/dist/dx-diagram.js',
'devexpress-gantt': 'npm:devexpress-gantt@4.1.56/dist/dx-gantt.js',
'@devextreme/runtime': 'npm:@devextreme/runtime@3.0.13',
'inferno': 'npm:inferno@7.4.11/dist/inferno.min.js',
'inferno-compat': 'npm:inferno-compat/dist/inferno-compat.min.js',
'inferno-create-element': 'npm:inferno-create-element@7.4.11/dist/inferno-create-element.min.js',
'inferno-dom': 'npm:inferno-dom/dist/inferno-dom.min.js',
'inferno-hydrate': 'npm:inferno-hydrate@7.4.11/dist/inferno-hydrate.min.js',
'inferno-clone-vnode': 'npm:inferno-clone-vnode/dist/inferno-clone-vnode.min.js',
'inferno-create-class': 'npm:inferno-create-class/dist/inferno-create-class.min.js',
'inferno-extras': 'npm:inferno-extras/dist/inferno-extras.min.js',
'devextreme-cldr-data': 'npm:devextreme-cldr-data@1.0.3',
// 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',
// Prettier
'prettier/standalone': 'npm:prettier@2.8.8/standalone.js',
'prettier/parser-html': 'npm:prettier@2.8.8/parser-html.js',
},
packages: {
'devextreme': {
defaultExtension: 'js',
},
'devextreme-react': {
main: 'index.js',
},
'devextreme/events/utils': {
main: 'index',
},
'devextreme/localization/messages': {
format: 'json',
defaultExtension: 'json',
},
'devextreme/events': {
main: 'index',
},
'es6-object-assign': {
main: './index.js',
defaultExtension: 'js',
},
},
packageConfigPaths: [
'npm:@devextreme/*/package.json',
'npm:@devextreme/runtime@3.0.13/inferno/package.json',
],
babelOptions: {
sourceMaps: false,
stage0: true,
react: true,
},
};
System.config(window.config);
import React from 'react';
import ReactDOM from 'react-dom';
import App from './App.js';
ReactDOM.render(<App />, document.getElementById('app'));
const 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;
},
};
<!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/24.1.7/css/dx-diagram.min.css" />
<link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/24.1.7/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: 600px;
}