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<?php
namespace Drupal\views\Ajax;
use Drupal\Core\Ajax\CommandInterface;
/**
* Provides an AJAX command for scrolling to the top of an element.
*
* This command is implemented in Drupal.AjaxCommands.prototype.viewsScrollTop.
*/
class ScrollTopCommand implements CommandInterface {
/**
* A CSS selector string.
*
* @var string
*/
protected $selector;
/**
* Constructs a \Drupal\views\Ajax\ScrollTopCommand object.
*
* @param string $selector
* A CSS selector.
*/
public function __construct($selector) {
$this->selector = $selector;
}
/**
* {@inheritdoc}
*/
public function render() {
return [
'command' => 'viewsScrollTop',
'selector' => $this->selector,
];
}
}