Collaborative Editing

import { NgModule, Component, enableProdMode } from '@angular/core'; import { BrowserModule } from '@angular/platform-browser'; import { platformBrowserDynamic } from '@angular/platform-browser-dynamic'; import { DxDataGridModule, DxTextBoxModule } from 'devextreme-angular'; import { CollaborativeEditingService } from './app.service'; if(!/localhost/.test(document.location.host)) { enableProdMode(); } @Component({ selector: 'demo-app', templateUrl: 'app/app.component.html', styleUrls: ['app/app.component.css'], preserveWhitespaces: true, providers: [CollaborativeEditingService] }) export class AppComponent { dataSources: Array<Object>; stateDataSource: Object; maxDate: Date = new Date(3000, 0); constructor(private service: CollaborativeEditingService) { this.dataSources = [this.service.createStore(), this.service.createStore()]; this.stateDataSource = this.service.createStatesStore(); this.service.getStoreChangedObservable().subscribe(events => { this.dataSources.forEach(store => store.push(events)); }); } } @NgModule({ imports: [ BrowserModule, DxDataGridModule, DxTextBoxModule ], declarations: [AppComponent], bootstrap: [AppComponent] }) export class AppModule { } platformBrowserDynamic().bootstrapModule(AppModule);

.tables { display: flex; } .column:first-child { width: 50%; padding-right: 15px; } .column:last-child { width: 50%; padding-left: 15px; }

import { Injectable } from '@angular/core'; import { HubConnectionBuilder, HttpTransportType } from '@aspnet/signalr'; import * as AspNetData from 'devextreme-aspnet-data-nojquery'; import Guid from 'devextreme/core/guid'; import { Subject } from 'rxjs'; const BASE_PATH = 'https://js.devexpress.com/Demos/NetCore/'; @Injectable() export class CollaborativeEditingService { private storeChanged = new Subject<Array<Object>>(); private groupId: string = new Guid().toJSON(); private connection: Object; getStoreChangedObservable() { this.connection || this.initHubConnection(); return this.storeChanged.asObservable(); } createStatesStore() { return AspNetData.createStore({ key: 'ID', loadUrl: BASE_PATH + 'api/DataGridStatesLookup' }) } createStore() { const url = BASE_PATH + 'api/DataGridCollaborativeEditing'; return AspNetData.createStore({ key: 'ID', loadUrl: url, insertUrl: url, updateUrl: url, deleteUrl: url, onBeforeSend: (operation, ajaxSettings) => { ajaxSettings.data.groupId = this.groupId; } }) } private initHubConnection() { const connection = this.createConnection(); connection.start() .then(() => { connection.on('update', (key, data) => { this.storeChanged.next([{ type: 'update', key: key, data: data }]); }); connection.on('insert', data => { this.storeChanged.next([{ type: 'insert', data: data }]); }); connection.on('remove', key => { this.storeChanged.next([{ type: 'remove', key: key }]); }); }); } private createConnection() { const hubUrl = `${BASE_PATH}dataGridCollaborativeEditingHub?GroupId=${this.groupId}`; return new HubConnectionBuilder() .withUrl(hubUrl, { skipNegotiation: true, transport: HttpTransportType.WebSockets }) .build(); } }

// 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/ System.config({ transpiler: 'ts', typescriptOptions: { module: "system", emitDecoratorMetadata: true, experimentalDecorators: true }, meta: { 'typescript': { "exports": "ts" }, 'devextreme-aspnet-data-nojquery': { "esModule": true }, }, paths: { 'npm:': 'https://unpkg.com/' }, map: { 'ts': 'npm:plugin-typescript@8.0.0/lib/plugin.js', 'typescript': 'npm:typescript@3.4.5/lib/typescript.js', '@angular': 'npm:@angular', 'tslib': 'npm:tslib/tslib.js', 'rxjs': 'npm:rxjs', '@aspnet/signalr': 'npm:@aspnet/signalr@1.0.0/dist/cjs/index.js', 'devextreme-aspnet-data-nojquery': 'npm:devextreme-aspnet-data-nojquery@2.6.1', 'devextreme': 'npm:devextreme@20.1', 'jszip': 'npm:jszip@3.1.3/dist/jszip.min.js', 'quill': 'npm:quill@1.3.7/dist/quill.js', 'devexpress-diagram': 'npm:devexpress-diagram@1.0.9', 'devexpress-gantt': 'npm:devexpress-gantt@1.0.7', 'devextreme-angular': 'npm:devextreme-angular@20.1' }, packages: { 'app': { main: './app.component.ts', defaultExtension: 'ts' }, 'devextreme': { defaultExtension: 'js' }, 'devextreme/events/utils': { main: 'index' }, 'devextreme/events': { main: 'index' }, }, packageConfigPaths: [ "npm:*/package.json", "npm:@angular/*/package.json", "npm:@angular/common/*/package.json", "npm:rxjs/operators/package.json", "npm:devextreme-angular@20.1/*/package.json", "npm:devextreme-angular@20.1/ui/*/package.json", "npm:@aspnet/*/package.json", ] });

<!DOCTYPE html> <html xmlns="http://www.w3.org/1999/xhtml"> <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/20.1.6/css/dx.common.css" /> <link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/20.1.6/css/dx.light.css" /> <script src="https://unpkg.com/core-js@2.4.1/client/shim.min.js"></script> <script src="https://unpkg.com/zone.js@0.10.2/dist/zone.js"></script> <script src="https://unpkg.com/reflect-metadata@0.1.3/Reflect.js"></script> <script src="https://unpkg.com/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>