Chris@0: <?php
Chris@0: 
Chris@0: namespace Drupal\Core\Ajax;
Chris@0: 
Chris@0: /**
Chris@0:  * An AJAX command for marking HTML elements as changed.
Chris@0:  *
Chris@0:  * This command instructs the client to mark each of the elements matched by the
Chris@0:  * given selector as 'ajax-changed'.
Chris@0:  *
Chris@0:  * This command is implemented by Drupal.AjaxCommands.prototype.changed()
Chris@0:  * defined in misc/ajax.js.
Chris@0:  *
Chris@0:  * @ingroup ajax
Chris@0:  */
Chris@0: class ChangedCommand implements CommandInterface {
Chris@0: 
Chris@0:   /**
Chris@0:    * A CSS selector string.
Chris@0:    *
Chris@0:    * If the command is a response to a request from an #ajax form element then
Chris@0:    * this value can be NULL.
Chris@0:    *
Chris@0:    * @var string
Chris@0:    */
Chris@0:   protected $selector;
Chris@0: 
Chris@0:   /**
Chris@0:    * An optional CSS selector for elements to which asterisks will be appended.
Chris@0:    *
Chris@0:    * @var string
Chris@0:    */
Chris@0:   protected $asterisk;
Chris@0: 
Chris@0:   /**
Chris@0:    * Constructs a ChangedCommand object.
Chris@0:    *
Chris@0:    * @param string $selector
Chris@0:    *   CSS selector for elements to be marked as changed.
Chris@0:    * @param string $asterisk
Chris@0:    *   CSS selector for elements to which an asterisk will be appended.
Chris@0:    */
Chris@0:   public function __construct($selector, $asterisk = '') {
Chris@0:     $this->selector = $selector;
Chris@0:     $this->asterisk = $asterisk;
Chris@0:   }
Chris@0: 
Chris@0:   /**
Chris@0:    * Implements Drupal\Core\Ajax\CommandInterface:render().
Chris@0:    */
Chris@0:   public function render() {
Chris@0: 
Chris@0:     return [
Chris@0:       'command' => 'changed',
Chris@0:       'selector' => $this->selector,
Chris@0:       'asterisk' => $this->asterisk,
Chris@0:     ];
Chris@0:   }
Chris@0: 
Chris@0: }