CloseDialogCommand.php

<?php

namespace Drupal\Core\Ajax;


/**
 * Defines an AJAX command that closes the current active dialog.
 *
 * @ingroup ajax
 */
class CloseDialogCommand implements CommandInterface {
    
    /**
     * A CSS selector string of the dialog to close.
     *
     * @var string
     */
    protected $selector;
    
    /**
     * Whether to persist the dialog in the DOM or not.
     *
     * @var bool
     */
    protected $persist;
    
    /**
     * Constructs a CloseDialogCommand object.
     *
     * @param string $selector
     *   A CSS selector string of the dialog to close.
     * @param bool $persist
     *   (optional) Whether to persist the dialog in the DOM or not.
     */
    public function __construct($selector = NULL, $persist = FALSE) {
        $this->selector = $selector ? $selector : '#drupal-modal';
        $this->persist = $persist;
    }
    
    /**
     * {@inheritdoc}
     */
    public function render() {
        return [
            'command' => 'closeDialog',
            'selector' => $this->selector,
            'persist' => $this->persist,
        ];
    }

}