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<?php
namespace OOUI;
/**
* Radio input widget.
*/
class RadioInputWidget extends InputWidget {
use RequiredElement;
/* Static Properties */
/** @var string */
public static $tagName = 'span';
/**
* @param array $config Configuration options
* - bool $config['selected'] Whether the radio button is initially selected
* (default: false)
*/
public function __construct( array $config = [] ) {
// Parent constructor
parent::__construct( $config );
// Traits
$this->initializeRequiredElement(
array_merge( [ 'indicatorElement' => null ], $config )
);
// Initialization
$this->addClasses( [ 'oo-ui-radioInputWidget' ] );
// Required for pretty styling in WikimediaUI theme
$this->appendContent( new Tag( 'span' ) );
$this->setSelected( $config['selected'] ?? false );
}
/** @inheritDoc */
protected function getInputElement( $config ) {
return ( new Tag( 'input' ) )->setAttributes( [ 'type' => 'radio' ] );
}
/**
* Set selection state of this radio button.
*
* @param bool $state Whether the button is selected
* @return $this
*/
public function setSelected( $state ) {
// RadioInputWidget doesn't track its state.
if ( $state ) {
$this->input->setAttributes( [ 'checked' => 'checked' ] );
} else {
$this->input->removeAttributes( [ 'checked' ] );
}
return $this;
}
/**
* Check if this radio button is selected.
*
* @return bool Radio is selected
*/
public function isSelected() {
return $this->input->getAttribute( 'checked' ) === 'checked';
}
/** @inheritDoc */
public function getConfig( &$config ) {
if ( $this->isSelected() ) {
$config['selected'] = true;
}
return parent::getConfig( $config );
}
}
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