Radio

Radio is used to select a single value from a selection of values.

Overview

It can be hooked into Angular's FormControl to accomodate custom functionality. The DaffRadioSetComponent serves as a wrapper around a logical group of radios to provide styling.

Accessibility

The DaffRadioComponent uses native <input> HTML elements to ensure an accesible experience by default. It supports inputs to customize the experience for accessibility by allowing native input for aria-label and aria-labelledby.

Radio Properties

Property	Name	Type	Description
Input	checked	boolean	The value representing whether the radio is checked. default is equal to `false`.
Input	value	string	The value of the radio.
Input	id	string	The id of the radio. It is uniquely generated but can be overwritten by the user. This must be unique.
Input	name	string	The name of the radio.
Input	label	string	The label for the radio. Used for setting `aria-label` attribute. Defaults to equal name if nothing is provided.
Output	selectionChange	boolean	An event that emits everytime a selection has been changed.

Radio Set Properties

Name	Type	Description
name	string	The name of the radio set

Usage

component.html

<h1>Daff Radio</h1>

<daff-radio-set [formGroup]="radioGroup" name="race">
  <daff-radio formControlName="race" value="Terran">Terran</daff-radio>
  <daff-radio formControlName="race" value="Protoss">Protoss</daff-radio>
  <daff-radio formControlName="race" value="Zerg">Zerg</daff-radio>
</daff-radio-set>

component.ts

import { Component } from '@angular/core';
import { FormGroup, FormControl } from '@angular/forms';

@Component({
  selector: 'radio-component',
  templateUrl: './radio.component.html',
  styleUrls: ['./radio.component.scss']
})
export class RadioComponent {

  radioGroup = new FormGroup({
    race: new FormControl('Terran')
  });

}