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RequiredElement.php
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RequiredElement.php
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<?php
namespace OOUI;
/**
* Element with a required attribute.
*
* @abstract
*/
trait RequiredElement {
/**
* Mark as required.
*
* @var bool
*/
protected $required = false;
/**
* @var Element
*/
protected $requiredElement;
/**
* @var IndicatorElement|null
*/
protected $indicatorElement;
/**
* @var Element|null
*/
protected $input;
/**
* @param array $config Configuration options
* - bool $config['required'] Mark the field as required.
* Implies `indicator: 'required'`. Note that `false` & setting `indicator: 'required'
* will result in no indicator shown. (default: false)
* - Element $config['requiredElement']
* - IndicatorElement $config['indicatorElement']
*/
public function initializeRequiredElement( array $config = [] ) {
// Properties
$this->requiredElement = $config['requiredElement'] ?? ( $this->input ?? $this );
$this->indicatorElement = array_key_exists( 'indicatorElement', $config ) ? $config['indicatorElement'] : $this;
if ( $this->indicatorElement && !method_exists( $this->indicatorElement, 'getIndicator' ) ) {
throw new Exception( 'config[\'indicatorElement\'] must use the IndicatorElement trait.' );
}
// Initialization
$this->setRequired( $config['required'] ?? false );
$this->registerConfigCallback( function ( &$config ) {
$config['required'] = $this->required;
} );
}
/**
* Check if the widget is required.
*
* @return bool
*/
public function isRequired(): bool {
return $this->required;
}
/**
* Set the required state of the widget.
*
* @param bool $state Make input required
* @return $this
*/
public function setRequired( bool $state ) {
$this->required = $state;
if ( $this->required ) {
$this->requiredElement->setAttributes( [
'required' => null
] );
if ( $this->indicatorElement && $this->indicatorElement->getIndicator() === null ) {
$this->indicatorElement->setIndicator( 'required' );
}
} else {
$this->requiredElement->removeAttributes( [
'required'
] );
if ( $this->indicatorElement && $this->indicatorElement->getIndicator() === 'required' ) {
$this->indicatorElement->setIndicator( null );
}
}
return $this;
}
/**
* @param callable $func
*/
abstract public function registerConfigCallback( callable $func );
}

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Expires
Oct 4 2026, 21:49 (5 w, 5 d ago)
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RequiredElement.php (2 KB)

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