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<?php
namespace OOUI;
/**
* Element with an access key.
*
* Access keys allow an user to go to a specific element by using
* a shortcut combination of a browser specific keys + the key
* set to the field.
*
* @abstract
*/
trait AccessKeyedElement {
/**
* Access key
*
* @var ?string
*/
protected $accessKey = null;
/**
* @var Tag
*/
protected $accessKeyed;
/**
* @param array $config Configuration options
* - string $config['accessKey'] Access key. If not provided, no access key will be added
*/
public function initializeAccessKeyedElement( array $config = [] ) {
// Properties
$this->accessKeyed = $config['accessKeyed'] ?? $this;
// Initialization
$this->setAccessKey( $config['accessKey'] ?? null );
$this->registerConfigCallback( function ( &$config ) {
if ( $this->accessKey !== null ) {
$config['accessKey'] = $this->accessKey;
}
} );
}
/**
* Set access key.
*
* @param string $accessKey Tag's access key, use empty string to remove
* @return $this
*/
public function setAccessKey( $accessKey ) {
$accessKey = is_string( $accessKey ) && strlen( $accessKey ) ? $accessKey : null;
if ( $this->accessKey !== $accessKey ) {
if ( $accessKey !== null ) {
$this->accessKeyed->setAttributes( [ 'accesskey' => $accessKey ] );
} else {
$this->accessKeyed->removeAttributes( [ 'accesskey' ] );
}
$this->accessKey = $accessKey;
// Only if this is a TitledElement
if ( method_exists( $this, 'updateTitle' ) ) {
// @phan-suppress-next-line PhanUndeclaredMethod
$this->updateTitle();
}
}
return $this;
}
/**
* Get access key.
*
* @return string Access key string
*/
public function getAccessKey() {
return $this->accessKey;
}
/**
* Add information about the access key to the element's tooltip label.
* (This is only public for hacky usage in FieldLayout.)
*
* @param string $title Tooltip label for `title` attribute
* @return string
*/
public function formatTitleWithAccessKey( $title ) {
$accessKey = $this->getAccessKey();
if ( $accessKey ) {
$title .= " [$accessKey]";
}
return $title;
}
/**
* @param callable $func
*/
abstract public function registerConfigCallback( callable $func );
}
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