Backend API
import React, { useState, useCallback } from 'react';
import Chat, { type ChatTypes } from 'devextreme-react/chat';
import SelectBox from 'devextreme-react/select-box';
import CheckBox from 'devextreme-react/check-box';
import {
currentUser,
messages as initialMessages,
dayHeaderFormats as headerFormats,
messageTimestampFormats as messageTimestamps,
messageTimestampLabel,
dayHeaderLabel,
} from './data.ts';
export default function App() {
const [messages, setMessages] = useState<ChatTypes.Message[]>(initialMessages);
const [showAvatar, setShowAvatar] = useState(true);
const [showUsername, setShowUsername] = useState(true);
const [showDayHeaders, setDayHeaders] = useState(true);
const [dayHeaderFormat, setDayHeaderFormat] = useState(headerFormats[0]);
const [showMessageTimestamp, setMessageTimestamp] = useState(true);
const [messageTimestampFormat, setMessageTimestampFormat] = useState(messageTimestamps[0]);
const [isDisabled, setDisabled] = useState(false);
const onMessageEntered = useCallback(({ message }: ChatTypes.MessageEnteredEvent) => {
setMessages((prevMessages) => [...prevMessages, message]);
}, []);
return (
<React.Fragment>
<div className="chat-container">
<Chat
height={710}
items={messages}
user={currentUser}
disabled={isDisabled}
showAvatar={showAvatar}
showUserName={showUsername}
showDayHeaders={showDayHeaders}
showMessageTimestamp={showMessageTimestamp}
dayHeaderFormat={dayHeaderFormat}
messageTimestampFormat={messageTimestampFormat}
onMessageEntered={onMessageEntered}
/>
</div>
<div className="options">
<div className="caption">Options</div>
<div className="option">
<CheckBox
text="Avatar"
value={showAvatar}
onValueChange={setShowAvatar}
/>
</div>
<div className="option">
<CheckBox
text="User Name"
value={showUsername}
onValueChange={setShowUsername}
/>
</div>
<div className="option-separator"></div>
<div className="option">
<CheckBox
text="Day Headers"
value={showDayHeaders}
onValueChange={setDayHeaders}
/>
</div>
<div className="option">
<span>Day Header Format:</span>
<SelectBox
items={headerFormats}
value={dayHeaderFormat}
inputAttr={dayHeaderLabel}
onValueChange={setDayHeaderFormat}
/>
</div>
<div className="option-separator"></div>
<div className="option">
<CheckBox
text="Message Timestamp"
value={showMessageTimestamp}
onValueChange={setMessageTimestamp}
/>
</div>
<div className="option">
<span>Message Timestamp Format:</span>
<SelectBox
items={messageTimestamps}
value={messageTimestampFormat}
inputAttr= {messageTimestampLabel}
onValueChange={setMessageTimestampFormat}
/>
</div>
<div className="option-separator"></div>
<div className="option">
<CheckBox
text="Disable Chat"
value={isDisabled}
onValueChange={setDisabled}
/>
</div>
</div>
</React.Fragment>
);
}
import React, { useState, useCallback } from 'react';
import Chat from 'devextreme-react/chat';
import SelectBox from 'devextreme-react/select-box';
import CheckBox from 'devextreme-react/check-box';
import {
currentUser,
messages as initialMessages,
dayHeaderFormats as headerFormats,
messageTimestampFormats as messageTimestamps,
messageTimestampLabel,
dayHeaderLabel,
} from './data.js';
export default function App() {
const [messages, setMessages] = useState(initialMessages);
const [showAvatar, setShowAvatar] = useState(true);
const [showUsername, setShowUsername] = useState(true);
const [showDayHeaders, setDayHeaders] = useState(true);
const [dayHeaderFormat, setDayHeaderFormat] = useState(headerFormats[0]);
const [showMessageTimestamp, setMessageTimestamp] = useState(true);
const [messageTimestampFormat, setMessageTimestampFormat] = useState(messageTimestamps[0]);
const [isDisabled, setDisabled] = useState(false);
const onMessageEntered = useCallback(({ message }) => {
setMessages((prevMessages) => [...prevMessages, message]);
}, []);
return (
<React.Fragment>
<div className="chat-container">
<Chat
height={710}
items={messages}
user={currentUser}
disabled={isDisabled}
showAvatar={showAvatar}
showUserName={showUsername}
showDayHeaders={showDayHeaders}
showMessageTimestamp={showMessageTimestamp}
dayHeaderFormat={dayHeaderFormat}
messageTimestampFormat={messageTimestampFormat}
onMessageEntered={onMessageEntered}
/>
</div>
<div className="options">
<div className="caption">Options</div>
<div className="option">
<CheckBox
text="Avatar"
value={showAvatar}
onValueChange={setShowAvatar}
/>
</div>
<div className="option">
<CheckBox
text="User Name"
value={showUsername}
onValueChange={setShowUsername}
/>
</div>
<div className="option-separator"></div>
<div className="option">
<CheckBox
text="Day Headers"
value={showDayHeaders}
onValueChange={setDayHeaders}
/>
</div>
<div className="option">
<span>Day Header Format:</span>
<SelectBox
items={headerFormats}
value={dayHeaderFormat}
inputAttr={dayHeaderLabel}
onValueChange={setDayHeaderFormat}
/>
</div>
<div className="option-separator"></div>
<div className="option">
<CheckBox
text="Message Timestamp"
value={showMessageTimestamp}
onValueChange={setMessageTimestamp}
/>
</div>
<div className="option">
<span>Message Timestamp Format:</span>
<SelectBox
items={messageTimestamps}
value={messageTimestampFormat}
inputAttr={messageTimestampLabel}
onValueChange={setMessageTimestampFormat}
/>
</div>
<div className="option-separator"></div>
<div className="option">
<CheckBox
text="Disable Chat"
value={isDisabled}
onValueChange={setDisabled}
/>
</div>
</div>
</React.Fragment>
);
}
import React from 'react';
import ReactDOM from 'react-dom';
import App from './App.tsx';
ReactDOM.render(
<App />,
document.getElementById('app'),
);
import { ChatTypes } from 'devextreme-react/chat';
function getTimestamp(date, offsetMinutes = 0) {
return date.getTime() + offsetMinutes * 60000;
}
const date = new Date();
date.setHours(0, 0, 0, 0);
export const currentUser: ChatTypes.User = {
id: 'c94c0e76-fb49-4b9b-8f07-9f93ed93b4f3',
name: 'John Doe',
};
export const supportAgent: ChatTypes.User = {
id: 'd16d1a4c-5c67-4e20-b70e-2991c22747c3',
name: 'Support Agent',
avatarUrl: '../../../../images/petersmith.png',
};
export const messages = [
{
timestamp: getTimestamp(date, -9),
author: supportAgent,
text: 'Hello, John!\nHow can I assist you today?',
},
{
timestamp: getTimestamp(date, -7),
author: currentUser,
text: 'Hi, I\'m having trouble accessing my account.',
},
{
timestamp: getTimestamp(date, -7),
author: currentUser,
text: 'It says my password is incorrect.',
},
{
timestamp: getTimestamp(date, -7),
author: supportAgent,
text: 'I can help you with that. Can you please confirm your UserID for security purposes?',
},
{
timestamp: getTimestamp(date, 1),
author: currentUser,
text: 'john.doe1357',
},
{
timestamp: getTimestamp(date, 1),
author: supportAgent,
text: '✅ Instructions to restore access have been sent to the email address associated with your account.',
},
];
export const dayHeaderFormats = ['dd/MM/yyyy', 'dd.MM.yyyy', 'MMMM dd, yyyy', 'EEEE, MMMM dd'];
export const messageTimestampFormats = ['hh:mm a', 'hh:mm:ss a', 'HH:mm', 'HH:mm:ss'];
export const messageTimestampLabel = { 'aria-label': 'Message Timestamp Format' };
export const dayHeaderLabel = { 'aria-label': 'Day Header Format' };
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://cdn.jsdelivr.net/npm/',
'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@1.7.6/dist/dx-quill.min.js',
'devexpress-diagram': 'npm:devexpress-diagram@2.2.24/dist/dx-diagram.js',
'devexpress-gantt': 'npm:devexpress-gantt@4.1.64/dist/dx-gantt.js',
'inferno': 'npm:inferno@8.2.3/dist/inferno.min.js',
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'inferno-create-element': 'npm:inferno-create-element@8.2.3/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',
'@preact/signals-core': 'npm:@preact/signals-core@1.8.0/dist/signals-core.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-react/common': {
main: 'index.js',
},
'devextreme/events/utils': {
main: 'index',
},
'devextreme/common/core/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',
],
babelOptions: {
sourceMaps: false,
stage0: true,
react: true,
},
};
System.config(window.config);
// eslint-disable-next-line
const useTgzInCSB = ['openai'];
import React from 'react';
import ReactDOM from 'react-dom';
import App from './App.js';
ReactDOM.render(<App />, document.getElementById('app'));
function getTimestamp(date, offsetMinutes = 0) {
return date.getTime() + offsetMinutes * 60000;
}
const date = new Date();
date.setHours(0, 0, 0, 0);
export const currentUser = {
id: 'c94c0e76-fb49-4b9b-8f07-9f93ed93b4f3',
name: 'John Doe',
};
export const supportAgent = {
id: 'd16d1a4c-5c67-4e20-b70e-2991c22747c3',
name: 'Support Agent',
avatarUrl: '../../../../images/petersmith.png',
};
export const messages = [
{
timestamp: getTimestamp(date, -9),
author: supportAgent,
text: 'Hello, John!\nHow can I assist you today?',
},
{
timestamp: getTimestamp(date, -7),
author: currentUser,
text: "Hi, I'm having trouble accessing my account.",
},
{
timestamp: getTimestamp(date, -7),
author: currentUser,
text: 'It says my password is incorrect.',
},
{
timestamp: getTimestamp(date, -7),
author: supportAgent,
text: 'I can help you with that. Can you please confirm your UserID for security purposes?',
},
{
timestamp: getTimestamp(date, 1),
author: currentUser,
text: 'john.doe1357',
},
{
timestamp: getTimestamp(date, 1),
author: supportAgent,
text: '✅ Instructions to restore access have been sent to the email address associated with your account.',
},
];
export const dayHeaderFormats = ['dd/MM/yyyy', 'dd.MM.yyyy', 'MMMM dd, yyyy', 'EEEE, MMMM dd'];
export const messageTimestampFormats = ['hh:mm a', 'hh:mm:ss a', 'HH:mm', 'HH:mm:ss'];
export const messageTimestampLabel = { 'aria-label': 'Message Timestamp Format' };
export const dayHeaderLabel = { 'aria-label': 'Day Header Format' };
<!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/25.1.6/css/dx.light.css" />
<link rel="stylesheet" type="text/css" href="styles.css" />
<script src="https://cdn.jsdelivr.net/npm/core-js@2.6.12/client/shim.min.js"></script>
<script src="https://cdn.jsdelivr.net/npm/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>
#app {
min-width: 720px;
display: flex;
gap: 20px;
}
.chat-container {
display: flex;
flex-grow: 1;
align-items: center;
justify-content: center;
}
.options {
padding: 20px;
display: flex;
flex-direction: column;
min-width: 280px;
background-color: rgba(191, 191, 191, 0.15);
gap: 16px;
}
.dx-chat {
max-width: 480px;
}
.caption {
font-size: var(--dx-font-size-sm);
font-weight: 500;
}
.option-separator {
border-bottom: 1px solid var(--dx-color-border);
}
.dx-avatar {
border: 1px solid var(--dx-color-border);
}