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Radio Group

Overview

Documentation
The RadioGroup is a widget that contains a set of radio buttons and allows an end user to make a single selection from the set. This demo illustrates how to change the widget layout, define a custom template and handle the value change event.
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<div class="form"> <div class="dx-fieldset"> <div class="dx-field"> <div class="dx-field-label">Default mode</div> <div class="dx-field-value"> <dx-radio-group [items]="priorities" [value]="priorities[0]"> </dx-radio-group> </div> </div> <div class="dx-field"> <div class="dx-field-label">Disabled</div> <div class="dx-field-value"> <dx-radio-group [items]="priorities" [value]="priorities[1]" [disabled]="true"> </dx-radio-group> </div> </div> <div class="dx-field"> <div class="dx-field-label">Horizontal layout</div> <div class="dx-field-value"> <dx-radio-group [items]="priorities" [value]="priorities[0]" layout="horizontal"> </dx-radio-group> </div> </div> <div class="dx-field"> <div class="dx-field-label">Custom item template</div> <div class="dx-field-value"> <dx-radio-group #customizedRadioGroup [items]="priorities" [value]="priorities[2]"> <div *dxTemplate="let priority of 'item'"> <div>{{priority}}</div> </div> </dx-radio-group> </div> </div> <div class="dx-field"> <div class="dx-field-label">Event handling</div> <div class="dx-field-value"> <dx-radio-group #eventRadioGroup id="radio-group-with-selection" [items]="priorities" (onValueChanged)="onValueChanged($event)"> </dx-radio-group> </div> </div> </div> <div id="tasks-list"> Tasks by selected priority: <ul id="list"> <li *ngFor="let data of currentData"> {{data}} </li> </ul> </div> </div>
import { NgModule, Component, ViewChild } from '@angular/core'; import { BrowserModule } from '@angular/platform-browser'; import { platformBrowserDynamic } from '@angular/platform-browser-dynamic'; import { DxRadioGroupModule, DxRadioGroupComponent, DxTemplateModule } from 'devextreme-angular'; import data from "devextreme/data/array_store"; import { Service, Task } from './app.service'; @Component({ selector: 'demo-app', providers: [Service], templateUrl: 'app/app.component.html', styleUrls: ['app/app.component.css'] }) export class AppComponent { @ViewChild("customizedRadioGroup") customizedRadioGroup: DxRadioGroupComponent; @ViewChild("eventRadioGroup") eventRadioGroup: DxRadioGroupComponent; priorities: string[]; tasks: Task[]; data: any; currentData: string[] = []; constructor(service: Service) { this.tasks = service.getTasks(); this.priorities = [ "Low", "Normal", "Urgent", "High" ]; this.currentData[0] = this.tasks[1].subject; } ngOnInit() { this.data = new data({ data: this.tasks, key: "ID" }); } ngAfterViewInit(){ let items = this.customizedRadioGroup.element.nativeElement.getElementsByClassName("dx-radiobutton"); for (let i = 0; i < 4; i++){ items[i].classList.add(this.priorities[i].toLowerCase()); } this.eventRadioGroup.instance.option("value", this.priorities[0]); } onValueChanged($event){ this.currentData = []; this.tasks.forEach((item, index) => { if(this.priorities[item.priorityIndex] == $event.value){ this.currentData.push(this.tasks[index].subject); } }); } } @NgModule({ imports: [ BrowserModule, DxRadioGroupModule, DxTemplateModule ], declarations: [AppComponent], bootstrap: [AppComponent] }) export class AppModule { } platformBrowserDynamic().bootstrapModule(AppModule);
/deep/ .low.dx-radiobutton-checked .dx-radiobutton-icon .dx-radiobutton-icon-dot { background: gray; } /deep/ .normal.dx-radiobutton-checked .dx-radiobutton-icon .dx-radiobutton-icon-dot { background: green; } /deep/ .urgent.dx-radiobutton-checked .dx-radiobutton-icon .dx-radiobutton-icon-dot { background: orange; } /deep/ .high.dx-radiobutton-checked .dx-radiobutton-icon .dx-radiobutton-icon-dot { background: red; } /deep/ #radio-group-with-selection { margin-bottom: 10px; } /deep/ #tasks-list { margin: 0 0 10px 10px; white-space: normal; } /deep/ #list { margin: 10px 0 0 20px; padding-left: 0; text-align: left; }
import { Injectable } from '@angular/core'; export class Task { id: number; subject: string; assignedEmployeeId: number; priorityIndex: number; } let tasks: Product[] = [{ id: 1, subject: "Choose between PPO and HMO Health Plan", assignedEmployeeId: 1, priorityIndex: 3 }, { id: 2, subject: "Non-Compete Agreements", assignedEmployeeId: 2, priorityIndex: 0 }, { id: 3, subject: "Comment on Revenue Projections", assignedEmployeeId: 2, priorityIndex: 1 }, { id: 4, subject: "Sign Updated NDA", assignedEmployeeId: 3, priorityIndex: 2 }, { id: 5, subject: "Submit Questions Regarding New NDA", assignedEmployeeId: 6, priorityIndex: 3 }, { id: 6, subject: "Rollout of New Website and Marketing Brochures", assignedEmployeeId: 22, priorityIndex: 3 }]; @Injectable() export class Service { getTasks(): Task[] { return tasks; } }
// In real applications, you should not transpile code in the browser. You can see how to create your own application with Angular 2 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@4.0.10/lib/plugin.js', 'typescript': 'npm:typescript@2.0.6/lib/typescript.js', '@angular/core': 'npm:@angular/core@2.4.3/bundles/core.umd.js', '@angular/common': 'npm:@angular/common@2.4.3/bundles/common.umd.js', '@angular/compiler': 'npm:@angular/compiler@2.4.3/bundles/compiler.umd.js', '@angular/platform-browser': 'npm:@angular/platform-browser@2.4.3/bundles/platform-browser.umd.js', '@angular/platform-browser-dynamic': 'npm:@angular/platform-browser-dynamic@2.4.3/bundles/platform-browser-dynamic.umd.js', '@angular/http': 'npm:@angular/http@2.4.3/bundles/http.umd.js', '@angular/router': 'npm:@angular/router@3.4.3/bundles/router.umd.js', '@angular/forms': 'npm:@angular/forms@2.4.3/bundles/forms.umd.js', 'rxjs': 'npm:rxjs@5.0.3', 'devextreme': 'npm:devextreme@16.2', 'jquery': 'npm:jquery@3.1.1/dist/jquery.min.js', 'jszip': 'npm:jszip@3.1.3/dist/jszip.min.js', 'devextreme-angular': 'npm:devextreme-angular@16.2' }, packages: { 'app': { main: './app.component.ts', defaultExtension: 'ts' }, 'devextreme': { 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/16.2.5/css/dx.spa.css" /> <link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/16.2.5/css/dx.common.css" /> <link rel="dx-theme" data-theme="generic.light" href="https://cdn3.devexpress.com/jslib/16.2.5/css/dx.light.css" /> <link rel="dx-theme" data-theme="android5.light" href="https://cdn3.devexpress.com/jslib/16.2.5/css/dx.android5.light.css" /> <link rel="dx-theme" data-theme="ios7.default" href="https://cdn3.devexpress.com/jslib/16.2.5/css/dx.ios7.default.css" /> <link rel="dx-theme" data-theme="win10.black" href="https://cdn3.devexpress.com/jslib/16.2.5/css/dx.win10.black.css" /> <link rel="dx-theme" data-theme="win10.white" href="https://cdn3.devexpress.com/jslib/16.2.5/css/dx.win10.white.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@0.19.31/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>