Hierarchical Data Structure

import { NgModule, Component, enableProdMode } from '@angular/core'; import { BrowserModule } from '@angular/platform-browser'; import { platformBrowserDynamic } from '@angular/platform-browser-dynamic'; import { DxTreeMapModule } from 'devextreme-angular'; import { CitiesPopulation, Service } from './app.service'; if(!/localhost/.test(document.location.host)) { enableProdMode(); } @Component({ selector: 'demo-app', templateUrl: 'app/app.component.html', styleUrls: ['app/app.component.css'], providers: [Service] }) export class AppComponent { citiesPopulations: CitiesPopulation[]; constructor(service: Service) { this.citiesPopulations = service.getCitiesPopulations(); } customizeTooltip(arg) { var data = arg.node.data, result = null; if (arg.node.isLeaf()) { result = "<span class='city'>" + data.name + "</span> (" + data.country + ")<br/>Population: " + arg.valueText; } return { text: result }; } } @NgModule({ imports: [ BrowserModule, DxTreeMapModule ], declarations: [AppComponent], bootstrap: [AppComponent] }) export class AppModule { } platformBrowserDynamic().bootstrapModule(AppModule);

::ng-deep .city { font-weight: 500; }

import { Injectable } from '@angular/core'; export interface CityPopulation { value: number; name: string; country: string; } export interface CitiesPopulation { name: string; items: CityPopulation[]; } let citiesPopulations: CitiesPopulation[] = [{ name: "Africa", items: [{ value: 21324000, name: "Lagos", country: "Nigeria" }, { value: 9735000, name: "Kinshasa", country: "Democratic Republic of the Congo" }, { value: 9278441, name: "Cairo", country: "Egypt" }] }, { name: "Asia", items: [{ value: 24256800, name: "Shanghai", country: "China" }, { value: 23500000, name: "Karachi", country: "Pakistan" }, { value: 21516000, name: "Beijing", country: "China" }, { value: 16787941, name: "Delhi", country: "India" }, { value: 15200000, name: "Tianjin", country: "China" }] }, { name: "Australia", items: [{ value: 4840600, name: "Sydney", country: "Austraila" }, { value: 4440000, name: "Melbourne", country: "Austraila" }] }, { name: "Europe", items: [{ value: 14160467, name: "Istanbul", country: "Turkey" }, { value: 12197596, name: "Moscow", country: "Russia" }, { value: 8538689, name: "London", country: "United Kingdom" }, { value: 5191690, name: "Saint Petersburg", country: "Russia" }, { value: 4470800, name: "Ankara", country: "Turkey" }, { value: 3517424, name: "Berlin", country: "Germany" }] }, { name: "North America", items: [{ value: 8874724, name: "Mexico City", country: "Mexico" }, { value: 8550405, name: "New York City", country: "United States" }, { value: 3884307, name: "Los Angeles", country: "United States" }, { value: 2808503, name: "Toronto", country: "Canada" }] }, { name: "South America", items: [{ value: 11895893, name: "São Paulo", country: "Brazil" }, { value: 8693387, name: "Lima", country: "Peru" }, { value: 7776845, name: "Bogotá", country: "Colombia" }, { value: 6429923, name: "Rio de Janeiro", country: "Brazil" }] }]; @Injectable() export class Service { getCitiesPopulations() { return citiesPopulations; } }

// 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://github.com/DevExpress/devextreme-angular/blob/master/README.md System.config({ transpiler: 'ts', typescriptOptions: { module: "commonjs", emitDecoratorMetadata: true, experimentalDecorators: true }, meta: { 'typescript': { "exports": "ts" } }, paths: { 'npm:': 'https://unpkg.com/' }, map: { 'ts': 'npm:plugin-typescript@7.0.6/lib/plugin.js', 'typescript': 'npm:typescript@2.2.2/lib/typescript.js', '@angular/core': 'npm:@angular/core@7.1.3/bundles/core.umd.js', '@angular/common': 'npm:@angular/common@7.1.3/bundles/common.umd.js', '@angular/compiler': 'npm:@angular/compiler@7.1.3/bundles/compiler.umd.js', '@angular/platform-browser': 'npm:@angular/platform-browser@7.1.3/bundles/platform-browser.umd.js', '@angular/platform-browser-dynamic': 'npm:@angular/platform-browser-dynamic@7.1.3/bundles/platform-browser-dynamic.umd.js', '@angular/router': 'npm:@angular/router@7.1.3/bundles/router.umd.js', '@angular/forms': 'npm:@angular/forms@7.1.3/bundles/forms.umd.js', '@angular/common/http': 'npm:@angular/common@7.1.3/bundles/common-http.umd.js', 'tslib': 'npm:tslib/tslib.js', 'rxjs': 'npm:rxjs@6.3.3', 'rxjs/operators': 'npm:rxjs@6.3.3/operators', 'devextreme': 'npm:devextreme@19.1', 'jszip': 'npm:jszip@3.1.3/dist/jszip.min.js', 'quill': 'npm:quill@1.3.6/dist/quill.js', 'devexpress-diagram': 'npm:devexpress-diagram', 'devextreme-angular': 'npm:devextreme-angular@19.1' }, packages: { 'app': { main: './app.component.ts', defaultExtension: 'ts' }, 'devextreme': { defaultExtension: 'js' }, 'rxjs': { main: 'index.js', defaultExtension: 'js' }, 'rxjs/operators': { main: 'index.js', defaultExtension: 'js' }, 'devextreme-angular': { main: 'index.js', defaultExtension: 'js' } } });

<!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/19.1.3/css/dx.common.css" /> <link rel="dx-theme" data-theme="generic.light" href="https://cdn3.devexpress.com/jslib/19.1.3/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@0.6.25/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>