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<?php
namespace Drupal\Core\Ajax;
use Drupal\Core\Render\BubbleableMetadata;
use Drupal\Core\Render\AttachmentsInterface;
use Drupal\Core\Render\AttachmentsTrait;
use Symfony\Component\HttpFoundation\JsonResponse;
/**
* JSON response object for AJAX requests.
*
* @ingroup ajax
*/
class AjaxResponse extends JsonResponse implements AttachmentsInterface {
use AttachmentsTrait;
/**
* The array of ajax commands.
*
* @var array
*/
protected $commands = [];
/**
* Add an AJAX command to the response.
*
* @param \Drupal\Core\Ajax\CommandInterface $command
* An AJAX command object implementing CommandInterface.
* @param bool $prepend
* A boolean which determines whether the new command should be executed
* before previously added commands. Defaults to FALSE.
*
* @return AjaxResponse
* The current AjaxResponse.
*/
public function addCommand(CommandInterface $command, $prepend = FALSE) {
if ($prepend) {
array_unshift($this->commands, $command->render());
}
else {
$this->commands[] = $command->render();
}
if ($command instanceof CommandWithAttachedAssetsInterface) {
$assets = $command->getAttachedAssets();
$attachments = [
'library' => $assets->getLibraries(),
'drupalSettings' => $assets->getSettings(),
];
$attachments = BubbleableMetadata::mergeAttachments($this->getAttachments(), $attachments);
$this->setAttachments($attachments);
}
return $this;
}
/**
* Gets all AJAX commands.
*
* @return \Drupal\Core\Ajax\CommandInterface[]
* Returns all previously added AJAX commands.
*/
public function &getCommands() {
return $this->commands;
}
}