Radio button

The radio-button is part of the Gameface custom components suite.

Installation #

npm i coherent-gameface-radio-button

Usage with UMD: #

<script src="./node_modules/coherent-gameface-radio-button/dist/coherent-gameface-radio-button.production.min.js"></script>

• add the radio-button group and button custom Elements to your html:

<gameface-radio-group>
	<radio-button slot="radio-button"></radio-button>
	<radio-button slot="radio-button"></radio-button>
</gameface-radio-group>

Configuration and usage is explained further down the document.

Usage with JavaScript: #

If you wish to import the GamefaceRadioGroup using JavaScript you can remove the script tag and import it like this:

import { GamefaceRadioGroup } from 'coherent-gameface-radio-button';

or simply

import 'coherent-gameface-radio-button';

Note that this approach requires a module bundler like Webpack or Rollup to resolve the modules from the node_modules folder.

Add the Styles #

<link rel="stylesheet" href="coherent-gameface-components-theme.css">
<link rel="stylesheet" href="style.css">

To overwrite the default styles, simply create new rules for the class names that you wish to change and include them after the default styles.

Load the HTML file in Gameface to see the radio-button. You can also see an example in the demo folder of the component.

Configuration and Usage #

Radio Group Attributes #

The gameface-radio-group element support the following attributes:

Radio Button Attributes #

You can customize the radio button using the following attributes:

Initial Setup #

You can configure the <radio-button>’s initial state declaratively by setting the attributes in the HTML:

<gameface-radio-group>
	<radio-button slot="radio-button" disabled>Tab Targeting</radio-button>
	<radio-button slot="radio-button" checked value="yes" name="subtitles">Action Combat</radio-button>
</gameface-radio-group>

Updating the Attributes #

You can update the attributes using JavaScript or the DOM APIs.

With JavaScript: #

document.querySelector('gameface-radio-group').allButtons[0].<attribute> = <value>;

Where
<attribute> ::= disabled | checked | value | name
<value> ::= true | false | string

Custom Buttons #

You can add different styles for the radio buttons. Put the custom elements in the radio-button-content slot:

<gameface-radio-group class="custom-buttons">
    <radio-button slot="radio-button" checked>
        <div slot="radio-button-content" class="inner-button"><span>OFF</span></div>
    </radio-button>
    <radio-button slot="radio-button">
        <div slot="radio-button-content" class="inner-button"><span>ON</span></div>
    </radio-button>
</gameface-radio-group>

You can put HTML elements or other components in the radio-button-content slot.

Add the controls-disabled attribute to the <radio-button> element to hide the default radio button style:

<gameface-radio-group class="custom-buttons">
    <radio-button checked controls-disabled>
        <div slot="radio-button-content">OFF</div>
    </radio-button>
    <radio-button controls-disabled>
        <div slot="radio-button-content">ON</div>
    </radio-button>
</gameface-radio-group>

Usage #

On top of using the radioButton.checked and radioButton.checked you can get one of the <gameface-radio-group> Elements and call radioGroup.allButtons which will return an Array of all <radio-button> Elements.

When a radio-button has a checked attribute, this will be the initially checked button.

Mouse focusing works as well as keyboard navigation and focusing using the arrow keys and Enter or Space keys.

To select a <radio-button> using code, you can do the following:

const radioGroup = document.querySelector('gameface-radio-group');
radioGroup.value = {{SOME_RADIO_BUTTON_VALUE}};

If the value you’ve set doesn’t match any of the available radio button values it will return a warning.

Checking Previous or Next Button #

You can select adjacent <radio-button> elements using the <gameface-radio-group> methods: checkPrev() and checkNext().

If there are one or more following elements with the disabled attribute, the methods will check the next available one.

To select the previous or next available <radio-button>, you can do the following:

const radioGroup = document.querySelector('gameface-radio-group');
radioGroup.checkNext();
//or
radioGroup.checkPrev();

If there are no available elements to select, the currently checked one will remain selected.