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Backend API
<div class="demo-container">
<div class="chat-container">
<dx-chat
#chat
[height]="710"
[user]="currentUser"
[items]="messages$ | async"
[showAvatar]="true"
[showUserName]="true"
[showDayHeaders]="true"
[showMessageTimestamp]="true"
[dayHeaderFormat]="dayHeaderFormats[0]"
[messageTimestampFormat]="messageTimestampFormats[0]"
[disabled]="false"
(onMessageEntered)="onMessageEntered($event)"
>
</dx-chat>
</div>
<div class="options">
<div class="caption">Options</div>
<div class="option">
<dx-check-box text="Avatar" [(value)]="chat.showAvatar"></dx-check-box>
</div>
<div class="option">
<dx-check-box
text="User Name"
[(value)]="chat.showUserName"
></dx-check-box>
</div>
<div class="option-separator"></div>
<div class="option">
<dx-check-box
text="Day Headers"
[(value)]="chat.showDayHeaders"
></dx-check-box>
</div>
<div class="option">
<span>Day Header Format:</span>
<dx-select-box
[items]="dayHeaderFormats"
[(value)]="chat.dayHeaderFormat"
[inputAttr]="dayHeaderLabel"
></dx-select-box>
</div>
<div class="option-separator"></div>
<div class="option">
<dx-check-box
text="Message Timestamp"
[(value)]="chat.showMessageTimestamp"
></dx-check-box>
</div>
<div class="option">
<span>Message Timestamp Format:</span>
<dx-select-box
[items]="messageTimestampFormats"
[(value)]="chat.messageTimestampFormat"
[inputAttr]="messageTimestampLabel"
></dx-select-box>
</div>
<div class="option-separator"></div>
<div class="option">
<dx-check-box
text="Disable Chat"
[(value)]="chat.disabled"
></dx-check-box>
</div>
</div>
</div>
import { NgModule, Component, enableProdMode } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser';
import { platformBrowserDynamic } from '@angular/platform-browser-dynamic';
import { DxChatModule, DxCheckBoxModule, DxSelectBoxModule } from 'devextreme-angular';
import { DxChatTypes } from 'devextreme-angular/ui/chat';
import { Observable } from 'rxjs';
import { AppService } from './app.service';
if (!/localhost/.test(document.location.host)) {
enableProdMode();
}
let modulePrefix = '';
// @ts-ignore
if (window && window.config?.packageConfigPaths) {
modulePrefix = '/app';
}
@Component({
selector: 'demo-app',
templateUrl: `app/app.component.html`,
styleUrls: [`app/app.component.css`],
})
export class AppComponent {
currentUser: DxChatTypes.User;
supportAgent: DxChatTypes.User;
messages$: Observable<DxChatTypes.Message[]>;
dayHeaderFormats = this.appService.dayHeaderFormats;
messageTimestampFormats = this.appService.messageTimestampFormats;
dayHeaderLabel = this.appService.dayHeaderLabel;
messageTimestampLabel = this.appService.messageTimestampLabel;
constructor(private readonly appService: AppService) {
[this.currentUser, this.supportAgent] = this.appService.getUsers();
this.messages$ = this.appService.messages$;
}
onMessageEntered(event: DxChatTypes.MessageEnteredEvent) {
this.appService.onMessageEntered(event);
}
}
@NgModule({
imports: [
BrowserModule,
DxChatModule,
DxCheckBoxModule,
DxSelectBoxModule,
],
declarations: [AppComponent],
bootstrap: [AppComponent],
providers: [AppService],
})
export class AppModule { }
platformBrowserDynamic().bootstrapModule(AppModule);
.demo-container {
min-width: 720px;
display: flex;
gap: 20px;
}
::ng-deep .chat-container {
display: flex;
flex-grow: 1;
align-items: center;
justify-content: center;
}
::ng-deep .options {
padding: 20px;
display: flex;
flex-direction: column;
min-width: 280px;
background-color: rgba(191, 191, 191, 0.15);
gap: 16px;
}
::ng-deep .dx-chat {
max-width: 480px;
}
::ng-deep .caption {
font-size: var(--dx-font-size-sm);
font-weight: 500;
}
::ng-deep .option-separator {
border-bottom: 1px solid var(--dx-color-border);
}
::ng-deep .dx-avatar {
border: 1px solid var(--dx-color-border);
}
import { Injectable } from '@angular/core';
import { Observable, BehaviorSubject } from 'rxjs';
import { DxChatTypes } from 'devextreme-angular/ui/chat';
@Injectable({
providedIn: 'root',
})
export class AppService {
date: Date;
currentUser: DxChatTypes.User = {
id: 'c94c0e76-fb49-4b9b-8f07-9f93ed93b4f3',
name: 'John Doe',
};
supportAgent: DxChatTypes.User = {
id: 'd16d1a4c-5c67-4e20-b70e-2991c22747c3',
name: 'Support Agent',
avatarUrl: '../../../../images/petersmith.png',
};
dayHeaderFormats = ['dd/MM/yyyy', 'dd.MM.yyyy', 'MMMM dd, yyyy', 'EEEE, MMMM dd'];
messageTimestampFormats = ['hh:mm a', 'hh:mm:ss a', 'HH:mm', 'HH:mm:ss'];
messageTimestampLabel = { 'aria-label': 'Message Timestamp Format' };
dayHeaderLabel = { 'aria-label': 'Day Header Format' };
messages: DxChatTypes.Message[] = [];
messagesSubject: BehaviorSubject<DxChatTypes.Message[]> = new BehaviorSubject([]);
constructor() {
this.date = new Date();
this.date.setHours(0, 0, 0, 0);
this.messages = [
{
timestamp: this.getTimestamp(this.date, -9),
author: this.supportAgent,
text: 'Hello, John!\nHow can I assist you today?',
},
{
timestamp: this.getTimestamp(this.date, -7),
author: this.currentUser,
text: 'Hi, I\'m having trouble accessing my account.',
},
{
timestamp: this.getTimestamp(this.date, -7),
author: this.currentUser,
text: 'It says my password is incorrect.',
},
{
timestamp: this.getTimestamp(this.date, -7),
author: this.supportAgent,
text: 'I can help you with that. Can you please confirm your UserID for security purposes?',
},
{
timestamp: this.getTimestamp(this.date, 1),
author: this.currentUser,
text: 'john.doe1357',
},
{
timestamp: this.getTimestamp(this.date, 1),
author: this.supportAgent,
text: '✅ Instructions to restore access have been sent to the email address associated with your account.',
},
];
this.messagesSubject.next(this.messages);
}
get messages$(): Observable<DxChatTypes.Message[]> {
return this.messagesSubject.asObservable();
}
getUsers(): DxChatTypes.User[] {
return [this.currentUser, this.supportAgent];
}
getTimestamp(date: Date, offsetMinutes = 0): number {
return date.getTime() + offsetMinutes * 60000;
}
onMessageEntered(event: DxChatTypes.MessageEnteredEvent) {
this.messages = [...this.messages, event.message];
this.messagesSubject.next(this.messages);
}
}
// In real applications, you should not transpile code in the browser.
// You can see how to create your own application with Angular and DevExtreme here:
// https://js.devexpress.com/Documentation/Guide/Angular_Components/Getting_Started/Create_a_DevExtreme_Application/
const componentNames = [
'accordion',
'action-sheet',
'autocomplete',
'bar-gauge',
'box',
'bullet',
'button-group',
'button',
'calendar',
'card-view',
'chart',
'chat',
'check-box',
'circular-gauge',
'color-box',
'context-menu',
'data-grid',
'date-box',
'date-range-box',
'defer-rendering',
'diagram',
'draggable',
'drawer',
'drop-down-box',
'drop-down-button',
'file-manager',
'file-uploader',
'filter-builder',
'form',
'funnel',
'gallery',
'gantt',
'html-editor',
'linear-gauge',
'list',
'load-indicator',
'load-panel',
'lookup',
'map',
'menu',
'multi-view',
'nested',
'number-box',
'pagination',
'pie-chart',
'pivot-grid-field-chooser',
'pivot-grid',
'polar-chart',
'popover',
'popup',
'progress-bar',
'radio-group',
'range-selector',
'range-slider',
'recurrence-editor',
'resizable',
'responsive-box',
'sankey',
'scheduler',
'scroll-view',
'select-box',
'slider',
'sortable',
'sparkline',
'speed-dial-action',
'splitter',
'stepper',
'switch',
'tab-panel',
'tabs',
'tag-box',
'text-area',
'text-box',
'tile-view',
'toast',
'toolbar',
'tooltip',
'tree-list',
'tree-map',
'tree-view',
'validation-group',
'validation-summary',
'validator',
'vector-map',
];
window.exports = window.exports || {};
window.config = {
transpiler: 'ts',
typescriptOptions: {
module: 'system',
emitDecoratorMetadata: true,
experimentalDecorators: true,
},
meta: {
'typescript': {
'exports': 'ts',
},
'devextreme/time_zone_utils.js': {
'esModule': true,
},
'devextreme/localization.js': {
'esModule': true,
},
'devextreme/viz/palette.js': {
'esModule': true,
},
'@angular/platform-browser-dynamic': {
'esModule': true,
},
'@angular/platform-browser': {
'esModule': true,
},
'@angular/core': {
'esModule': true,
},
'@angular/common': {
'esModule': true,
},
'@angular/common/http': {
'esModule': true,
},
'@angular/animations': {
'esModule': true,
},
'@angular/forms': {
'esModule': true,
},
'openai': {
'esModule': true,
},
},
paths: {
'npm:': 'https://cdn.jsdelivr.net/npm/',
'bundles:': '../../../../bundles/',
'externals:': '../../../../bundles/externals/',
},
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',
/* @angular */
'@angular/compiler': 'bundles:@angular/compiler.umd.js',
'@angular/platform-browser-dynamic': 'bundles:@angular/platform-browser-dynamic.umd.js',
'@angular/core': 'bundles:@angular/core.umd.js',
'@angular/core/primitives/signals': 'bundles:@angular/core.primitives.signals.umd.js',
'@angular/common': 'bundles:@angular/common.umd.js',
'@angular/common/http': 'bundles:@angular/common-http.umd.js',
'@angular/platform-browser': 'bundles:@angular/platform-browser.umd.js',
'@angular/platform-browser/animations': 'bundles:@angular/platform-browser.umd.js',
'@angular/forms': 'bundles:@angular/forms.umd.js',
/* devextreme */
'devextreme': 'npm:devextreme@25.1.3/cjs',
'devextreme-quill': 'npm:devextreme-quill@1.7.3/dist/dx-quill.min.js',
'devexpress-diagram': 'npm:devexpress-diagram@2.2.19',
'devexpress-gantt': 'npm:devexpress-gantt@4.1.62',
/* devextreme-angular umd maps */
'devextreme-angular': 'bundles:devextreme-angular/devextreme-angular.umd.js',
'devextreme-angular/common/ai-integration': 'bundles:devextreme-angular/devextreme-angular-common-ai-integration.umd.js',
'devextreme-angular/core': 'bundles:devextreme-angular/devextreme-angular-core.umd.js',
'devextreme-angular/common/charts': 'bundles:devextreme-angular/devextreme-angular-common-charts.umd.js',
'devextreme-angular/common/core/animation': 'bundles:devextreme-angular/devextreme-angular-common-core-animation.umd.js',
'devextreme-angular/common/core/environment': 'bundles:devextreme-angular/devextreme-angular-common-core-environment.umd.js',
'devextreme-angular/common/core/events': 'bundles:devextreme-angular/devextreme-angular-common-core-events.umd.js',
'devextreme-angular/common/core/localization': 'bundles:devextreme-angular/devextreme-angular-common-core-localization.umd.js',
'devextreme-angular/common/core': 'bundles:devextreme-angular/devextreme-angular-common-core.umd.js',
'devextreme-angular/common/data/custom-store': 'bundles:devextreme-angular/devextreme-angular-common-data-custom-store.umd.js',
'devextreme-angular/common/data': 'bundles:devextreme-angular/devextreme-angular-common-data.umd.js',
'devextreme-angular/common/export/excel': 'bundles:devextreme-angular/devextreme-angular-common-export-excel.umd.js',
'devextreme-angular/common/export/pdf': 'bundles:devextreme-angular/devextreme-angular-common-export-pdf.umd.js',
'devextreme-angular/common/export': 'bundles:devextreme-angular/devextreme-angular-common-export.umd.js',
'devextreme-angular/common/grids': 'bundles:devextreme-angular/devextreme-angular-common-grids.umd.js',
'devextreme-angular/common': 'bundles:devextreme-angular/devextreme-angular-common.umd.js',
'devextreme-angular/http': 'bundles:devextreme-angular/devextreme-angular-http.umd.js',
...componentNames.reduce((acc, name) => {
acc[`devextreme-angular/ui/${name}`] = `bundles:devextreme-angular/devextreme-angular-ui-${name}.umd.js`;
acc[`devextreme-angular/ui/${name}/nested`] = `bundles:devextreme-angular/devextreme-angular-ui-${name}-nested.umd.js`;
return acc;
}, {}),
'tslib': 'npm:tslib/tslib.js',
'rxjs': 'npm:rxjs@7.5.3/dist/bundles/rxjs.umd.js',
'rxjs/operators': 'npm:rxjs@7.5.3/dist/cjs/operators/index.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',
'inferno': 'npm:inferno@8.2.3/dist/inferno.min.js',
'inferno-compat': 'npm:inferno-compat/dist/inferno-compat.min.js',
'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',
// Prettier
'prettier/standalone': 'npm:prettier@2.8.8/standalone.js',
'prettier/parser-html': 'npm:prettier@2.8.8/parser-html.js',
},
packages: {
'app': {
main: './app.component.ts',
defaultExtension: 'ts',
},
'devextreme': {
defaultExtension: 'js',
},
'devextreme/events/utils': {
main: 'index',
},
'devextreme/common/core/events/utils': {
main: 'index',
},
'devextreme/events': {
main: 'index',
},
'es6-object-assign': {
main: './index.js',
defaultExtension: 'js',
},
'rxjs': {
defaultExtension: 'js',
},
'rxjs/operators': {
defaultExtension: 'js',
},
},
packageConfigPaths: [
'npm:@devextreme/*/package.json',
'npm:rxjs@7.5.3/package.json',
'npm:rxjs@7.5.3/operators/package.json',
'npm:devexpress-diagram@2.2.19/package.json',
'npm:devexpress-gantt@4.1.62/package.json',
],
};
System.config(window.config);
// System.import('@angular/compiler').catch(console.error.bind(console));
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml" 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/25.1.3/css/dx.light.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/zone.js@0.14.10/bundles/zone.umd.js"></script>
<script src="https://cdn.jsdelivr.net/npm/reflect-metadata@0.1.13/Reflect.js"></script>
<script src="https://cdn.jsdelivr.net/npm/systemjs@0.21.3/dist/system.js"></script>
<script src="config.js"></script>
<script>
System.import("app").catch(console.error.bind(console));
</script>
</head>
<body class="dx-viewport">
<div class="demo-container">
<demo-app>Loading...</demo-app>
</div>
</body>
</html>