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Backend API
import React, { useCallback, useRef, useState } from 'react';
import DataGrid, {
Column,
Selection,
Toolbar,
Item,
DataGridRef,
} from 'devextreme-react/data-grid';
import SelectBox from 'devextreme-react/select-box';
import Button from 'devextreme-react/button';
import { Employee, employees, titleLabel } from './data.ts';
const titles = ['All', 'Dr.', 'Mr.', 'Mrs.', 'Ms.'];
const getEmployeeName = (row: Employee) => `${row.FirstName} ${row.LastName}`;
const getEmployeeNames = (selectedRowsData: Employee[]) => (selectedRowsData.length ? selectedRowsData.map(getEmployeeName).join(', ') : 'Nobody has been selected');
const App = () => {
const [prefix, setPrefix] = useState('');
const [selectedRowKeys, setSelectedRowKeys] = useState([]);
const [selectedEmployeeNames, setSelectedEmployeeNames] = useState('Nobody has been selected');
const dataGridRef = useRef<DataGridRef>(null);
const onClearButtonClicked = useCallback(() => {
dataGridRef.current.instance().clearSelection();
}, []);
const onSelectionChanged = useCallback(
({ selectedRowKeys: changedRowKeys, selectedRowsData }) => {
setPrefix(null);
setSelectedRowKeys(changedRowKeys);
setSelectedEmployeeNames(getEmployeeNames(selectedRowsData));
}, [],
);
const onSelectionFilterChanged = useCallback(({ value }) => {
const newPrefix = value;
if (newPrefix) {
const filteredEmployees = newPrefix === 'All' ? employees : employees.filter((employee) => employee.Prefix === newPrefix);
const changedRowKeys = filteredEmployees.map((employee) => employee.ID);
setPrefix(newPrefix);
setSelectedRowKeys(changedRowKeys);
setSelectedEmployeeNames(getEmployeeNames(filteredEmployees));
}
}, []);
return (
<div>
<DataGrid
id="grid-container"
dataSource={employees}
keyExpr="ID"
onSelectionChanged={onSelectionChanged}
ref={dataGridRef}
selectedRowKeys={selectedRowKeys}
showBorders={true}
>
<Selection mode="multiple" />
<Column dataField="Prefix" caption="Title" width={70} />
<Column dataField="FirstName" />
<Column dataField="LastName" />
<Column dataField="Position" width={180} />
<Column dataField="BirthDate" dataType="date" width={125} />
<Column dataField="HireDate" dataType="date" width={125} />
<Toolbar>
<Item location="before">
<SelectBox
dataSource={titles}
inputAttr={titleLabel}
onValueChanged={onSelectionFilterChanged}
placeholder="Select title"
width={150}
value={prefix}
/>
</Item>
<Item location="before">
<Button
disabled={!selectedRowKeys.length}
onClick={onClearButtonClicked}
text="Clear Selection"
/>
</Item>
</Toolbar>
</DataGrid>
<div className="selected-data">
<span className="caption">Selected Records:</span>{' '}
<span>
{selectedEmployeeNames}
</span>
</div>
</div>
);
};
export default App;
import React, { useCallback, useRef, useState } from 'react';
import DataGrid, {
Column, Selection, Toolbar, Item,
} from 'devextreme-react/data-grid';
import SelectBox from 'devextreme-react/select-box';
import Button from 'devextreme-react/button';
import { employees, titleLabel } from './data.js';
const titles = ['All', 'Dr.', 'Mr.', 'Mrs.', 'Ms.'];
const getEmployeeName = (row) => `${row.FirstName} ${row.LastName}`;
const getEmployeeNames = (selectedRowsData) =>
(selectedRowsData.length
? selectedRowsData.map(getEmployeeName).join(', ')
: 'Nobody has been selected');
const App = () => {
const [prefix, setPrefix] = useState('');
const [selectedRowKeys, setSelectedRowKeys] = useState([]);
const [selectedEmployeeNames, setSelectedEmployeeNames] = useState('Nobody has been selected');
const dataGridRef = useRef(null);
const onClearButtonClicked = useCallback(() => {
dataGridRef.current.instance().clearSelection();
}, []);
const onSelectionChanged = useCallback(
({ selectedRowKeys: changedRowKeys, selectedRowsData }) => {
setPrefix(null);
setSelectedRowKeys(changedRowKeys);
setSelectedEmployeeNames(getEmployeeNames(selectedRowsData));
},
[],
);
const onSelectionFilterChanged = useCallback(({ value }) => {
const newPrefix = value;
if (newPrefix) {
const filteredEmployees = newPrefix === 'All'
? employees
: employees.filter((employee) => employee.Prefix === newPrefix);
const changedRowKeys = filteredEmployees.map((employee) => employee.ID);
setPrefix(newPrefix);
setSelectedRowKeys(changedRowKeys);
setSelectedEmployeeNames(getEmployeeNames(filteredEmployees));
}
}, []);
return (
<div>
<DataGrid
id="grid-container"
dataSource={employees}
keyExpr="ID"
onSelectionChanged={onSelectionChanged}
ref={dataGridRef}
selectedRowKeys={selectedRowKeys}
showBorders={true}
>
<Selection mode="multiple" />
<Column
dataField="Prefix"
caption="Title"
width={70}
/>
<Column dataField="FirstName" />
<Column dataField="LastName" />
<Column
dataField="Position"
width={180}
/>
<Column
dataField="BirthDate"
dataType="date"
width={125}
/>
<Column
dataField="HireDate"
dataType="date"
width={125}
/>
<Toolbar>
<Item location="before">
<SelectBox
dataSource={titles}
inputAttr={titleLabel}
onValueChanged={onSelectionFilterChanged}
placeholder="Select title"
width={150}
value={prefix}
/>
</Item>
<Item location="before">
<Button
disabled={!selectedRowKeys.length}
onClick={onClearButtonClicked}
text="Clear Selection"
/>
</Item>
</Toolbar>
</DataGrid>
<div className="selected-data">
<span className="caption">Selected Records:</span> <span>{selectedEmployeeNames}</span>
</div>
</div>
);
};
export default App;
import React from 'react';
import ReactDOM from 'react-dom';
import App from './App.tsx';
ReactDOM.render(
<App />,
document.getElementById('app'),
);
export interface Employee {
ID: number;
FirstName: string;
LastName: string;
Prefix: string;
Position: string;
Picture: string;
BirthDate: string;
HireDate: string;
Notes: string;
Address: string;
}
export const employees: Employee[] = [{
ID: 1,
FirstName: 'John',
LastName: 'Heart',
Prefix: 'Mr.',
Position: 'CEO',
Picture: '../../../../images/employees/01.png',
BirthDate: '1964/03/16',
HireDate: '1995/01/15',
Notes: 'John has been in the Audio/Video industry since 1990. He has led DevAv as its CEO since 2003.\r\n\r\nWhen not working hard as the CEO, John loves to golf and bowl. He once bowled a perfect game of 300.',
Address: '351 S Hill St.',
}, {
ID: 20,
FirstName: 'Olivia',
LastName: 'Peyton',
Prefix: 'Mrs.',
Position: 'Sales Assistant',
Picture: '../../../../images/employees/09.png',
BirthDate: '1981/06/03',
HireDate: '2012/05/14',
Notes: 'Olivia loves to sell. She has been selling DevAV products since 2012. \r\n\r\nOlivia was homecoming queen in high school. She is expecting her first child in 6 months. Good Luck Olivia.',
Address: '807 W Paseo Del Mar',
}, {
ID: 4,
FirstName: 'Robert',
LastName: 'Reagan',
Prefix: 'Mr.',
Position: 'CMO',
Picture: '../../../../images/employees/03.png',
BirthDate: '1974/09/07',
HireDate: '2002/11/08',
Notes: 'Robert was recently voted the CMO of the year by CMO Magazine. He is a proud member of the DevAV Management Team.\r\n\r\nRobert is a championship BBQ chef, so when you get the chance ask him for his secret recipe.',
Address: '4 Westmoreland Pl.',
}, {
ID: 5,
FirstName: 'Greta',
LastName: 'Sims',
Prefix: 'Ms.',
Position: 'HR Manager',
Picture: '../../../../images/employees/04.png',
BirthDate: '1977/11/22',
HireDate: '1998/04/23',
Notes: 'Greta has been DevAV\'s HR Manager since 2003. She joined DevAV from Sonee Corp.\r\n\r\nGreta is currently training for the NYC marathon. Her best marathon time is 4 hours. Go Greta.',
Address: '1700 S Grandview Dr.',
}, {
ID: 6,
FirstName: 'Brett',
LastName: 'Wade',
Prefix: 'Mr.',
Position: 'IT Manager',
Picture: '../../../../images/employees/05.png',
BirthDate: '1968/12/01',
HireDate: '2009/03/06',
Notes: 'Brett came to DevAv from Microsoft and has led our IT department since 2012.\r\n\r\nWhen he is not working hard for DevAV, he coaches Little League (he was a high school pitcher).',
Address: '1120 Old Mill Rd.',
}, {
ID: 7,
FirstName: 'Sandra',
LastName: 'Johnson',
Prefix: 'Mrs.',
Position: 'Controller',
Picture: '../../../../images/employees/06.png',
BirthDate: '1974/11/15',
HireDate: '2005/05/11',
Notes: 'Sandra is a CPA and has been our controller since 2008. She loves to interact with staff so if you\'ve not met her, be certain to say hi.\r\n\r\nSandra has 2 daughters both of whom are accomplished gymnasts.',
Address: '4600 N Virginia Rd.',
}, {
ID: 10,
FirstName: 'Kevin',
LastName: 'Carter',
Prefix: 'Mr.',
Position: 'Shipping Manager',
Picture: '../../../../images/employees/07.png',
BirthDate: '1978/01/09',
HireDate: '2009/08/11',
Notes: 'Kevin is our hard-working shipping manager and has been helping that department work like clockwork for 18 months.\r\n\r\nWhen not in the office, he is usually on the basketball court playing pick-up games.',
Address: '424 N Main St.',
}, {
ID: 11,
FirstName: 'Cynthia',
LastName: 'Stanwick',
Prefix: 'Ms.',
Position: 'HR Assistant',
Picture: '../../../../images/employees/08.png',
BirthDate: '1985/06/05',
HireDate: '2008/03/24',
Notes: 'Cindy joined us in 2008 and has been in the HR department for 2 years. \r\n\r\nShe was recently awarded employee of the month. Way to go Cindy!',
Address: '2211 Bonita Dr.',
}, {
ID: 30,
FirstName: 'Kent',
LastName: 'Samuelson',
Prefix: 'Dr.',
Position: 'Ombudsman',
Picture: '../../../../images/employees/02.png',
BirthDate: '1972/09/11',
HireDate: '2009/04/22',
Notes: 'As our ombudsman, Kent is on the front-lines solving customer problems and helping our partners address issues out in the field. He is a classically trained musician and is a member of the Chamber Orchestra.',
Address: '12100 Mora Dr',
}, {
ID: 21,
FirstName: 'Taylor',
LastName: 'Riley',
Prefix: 'Mr.',
Position: 'Network Admin',
Picture: '',
BirthDate: '1982/08/14',
HireDate: '2012/04/14',
Notes: 'If you are like the rest of us at DevAV, then you\'ve probably reached out for help from Taylor. He does a great job as a member of our IT department.',
Address: '7776 Torreyson Dr',
}];
export const titleLabel = { 'aria-label': 'Title' };
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,
},
'openai': {
'esModule': true,
},
},
paths: {
'npm:': 'https://unpkg.com/',
'bundles:': '../../../../bundles/',
'externals:': '../../../../bundles/externals/',
},
defaultExtension: 'js',
map: {
'ts': 'npm:plugin-typescript@8.0.0/lib/plugin.js',
'typescript': 'npm:typescript@4.2.4/lib/typescript.js',
'jszip': 'npm:jszip@3.10.1/dist/jszip.min.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/prop-types.js',
'rrule': 'npm:rrule@2.6.4/dist/es5/rrule.js',
'luxon': 'npm:luxon@3.4.4/build/global/luxon.min.js',
'es6-object-assign': 'npm:es6-object-assign',
'devextreme': 'npm:devextreme@link:../../packages/devextreme/artifacts/npm/devextreme/cjs',
'devextreme-react': 'npm:devextreme-react@link:../../packages/devextreme-react/npm/cjs',
'devextreme-quill': 'npm:devextreme-quill@1.7.1/dist/dx-quill.min.js',
'devexpress-diagram': 'npm:devexpress-diagram@2.2.5/dist/dx-diagram.js',
'devexpress-gantt': 'npm:devexpress-gantt@4.1.54/dist/dx-gantt.js',
'@devextreme/runtime': 'npm:@devextreme/runtime@3.0.12',
'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/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@3.0.12/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'));
export const employees = [
{
ID: 1,
FirstName: 'John',
LastName: 'Heart',
Prefix: 'Mr.',
Position: 'CEO',
Picture: '../../../../images/employees/01.png',
BirthDate: '1964/03/16',
HireDate: '1995/01/15',
Notes:
'John has been in the Audio/Video industry since 1990. He has led DevAv as its CEO since 2003.\r\n\r\nWhen not working hard as the CEO, John loves to golf and bowl. He once bowled a perfect game of 300.',
Address: '351 S Hill St.',
},
{
ID: 20,
FirstName: 'Olivia',
LastName: 'Peyton',
Prefix: 'Mrs.',
Position: 'Sales Assistant',
Picture: '../../../../images/employees/09.png',
BirthDate: '1981/06/03',
HireDate: '2012/05/14',
Notes:
'Olivia loves to sell. She has been selling DevAV products since 2012. \r\n\r\nOlivia was homecoming queen in high school. She is expecting her first child in 6 months. Good Luck Olivia.',
Address: '807 W Paseo Del Mar',
},
{
ID: 4,
FirstName: 'Robert',
LastName: 'Reagan',
Prefix: 'Mr.',
Position: 'CMO',
Picture: '../../../../images/employees/03.png',
BirthDate: '1974/09/07',
HireDate: '2002/11/08',
Notes:
'Robert was recently voted the CMO of the year by CMO Magazine. He is a proud member of the DevAV Management Team.\r\n\r\nRobert is a championship BBQ chef, so when you get the chance ask him for his secret recipe.',
Address: '4 Westmoreland Pl.',
},
{
ID: 5,
FirstName: 'Greta',
LastName: 'Sims',
Prefix: 'Ms.',
Position: 'HR Manager',
Picture: '../../../../images/employees/04.png',
BirthDate: '1977/11/22',
HireDate: '1998/04/23',
Notes:
"Greta has been DevAV's HR Manager since 2003. She joined DevAV from Sonee Corp.\r\n\r\nGreta is currently training for the NYC marathon. Her best marathon time is 4 hours. Go Greta.",
Address: '1700 S Grandview Dr.',
},
{
ID: 6,
FirstName: 'Brett',
LastName: 'Wade',
Prefix: 'Mr.',
Position: 'IT Manager',
Picture: '../../../../images/employees/05.png',
BirthDate: '1968/12/01',
HireDate: '2009/03/06',
Notes:
'Brett came to DevAv from Microsoft and has led our IT department since 2012.\r\n\r\nWhen he is not working hard for DevAV, he coaches Little League (he was a high school pitcher).',
Address: '1120 Old Mill Rd.',
},
{
ID: 7,
FirstName: 'Sandra',
LastName: 'Johnson',
Prefix: 'Mrs.',
Position: 'Controller',
Picture: '../../../../images/employees/06.png',
BirthDate: '1974/11/15',
HireDate: '2005/05/11',
Notes:
"Sandra is a CPA and has been our controller since 2008. She loves to interact with staff so if you've not met her, be certain to say hi.\r\n\r\nSandra has 2 daughters both of whom are accomplished gymnasts.",
Address: '4600 N Virginia Rd.',
},
{
ID: 10,
FirstName: 'Kevin',
LastName: 'Carter',
Prefix: 'Mr.',
Position: 'Shipping Manager',
Picture: '../../../../images/employees/07.png',
BirthDate: '1978/01/09',
HireDate: '2009/08/11',
Notes:
'Kevin is our hard-working shipping manager and has been helping that department work like clockwork for 18 months.\r\n\r\nWhen not in the office, he is usually on the basketball court playing pick-up games.',
Address: '424 N Main St.',
},
{
ID: 11,
FirstName: 'Cynthia',
LastName: 'Stanwick',
Prefix: 'Ms.',
Position: 'HR Assistant',
Picture: '../../../../images/employees/08.png',
BirthDate: '1985/06/05',
HireDate: '2008/03/24',
Notes:
'Cindy joined us in 2008 and has been in the HR department for 2 years. \r\n\r\nShe was recently awarded employee of the month. Way to go Cindy!',
Address: '2211 Bonita Dr.',
},
{
ID: 30,
FirstName: 'Kent',
LastName: 'Samuelson',
Prefix: 'Dr.',
Position: 'Ombudsman',
Picture: '../../../../images/employees/02.png',
BirthDate: '1972/09/11',
HireDate: '2009/04/22',
Notes:
'As our ombudsman, Kent is on the front-lines solving customer problems and helping our partners address issues out in the field. He is a classically trained musician and is a member of the Chamber Orchestra.',
Address: '12100 Mora Dr',
},
{
ID: 21,
FirstName: 'Taylor',
LastName: 'Riley',
Prefix: 'Mr.',
Position: 'Network Admin',
Picture: '',
BirthDate: '1982/08/14',
HireDate: '2012/04/14',
Notes:
"If you are like the rest of us at DevAV, then you've probably reached out for help from Taylor. He does a great job as a member of our IT department.",
Address: '7776 Torreyson Dr',
},
];
export const titleLabel = { 'aria-label': 'Title' };
<!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.light.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>
#grid {
display: flex;
align-items: center;
margin-bottom: 10px;
}
.selected-data {
margin-top: 20px;
padding: 20px;
background-color: rgba(191, 191, 191, 0.15);
}
.selected-data .caption {
font-weight: bold;
font-size: 115%;
margin-right: 4px;
}
In this demo, selectAll() or selectRows(keys, preserve) is called when you change the SelectBox value and clearSelection() is called when you click the Clear Selection button.