RuleExpressionForm.php

<?php

namespace Drupal\rules\Form\Expression;

use Drupal\Core\Form\FormStateInterface;
use Drupal\rules\Engine\RuleExpressionInterface;

/**
 * Form view structure for rule expressions.
 *
 * @see \Drupal\rules\Plugin\RulesExpression\RuleExpression
 */
class RuleExpressionForm implements ExpressionFormInterface {
    use ExpressionFormTrait;
    
    /**
     * The rule expression object this form is for.
     *
     * @var \Drupal\rules\Engine\RuleExpressionInterface
     */
    protected $rule;
    
    /**
     * Creates a new object of this class.
     */
    public function __construct(RuleExpressionInterface $rule) {
        $this->rule = $rule;
    }
    
    /**
     * {@inheritdoc}
     */
    public function form(array $form, FormStateInterface $form_state) {
        $conditions_form_handler = $this->rule
            ->getConditions()
            ->getFormHandler();
        $form = $conditions_form_handler->form($form, $form_state);
        $actions_form_handler = $this->rule
            ->getActions()
            ->getFormHandler();
        $form = $actions_form_handler->form($form, $form_state);
        return $form;
    }
    
    /**
     * {@inheritdoc}
     */
    public function submitForm(array &$form, FormStateInterface $form_state) {
        $this->rule
            ->getConditions()
            ->getFormHandler()
            ->submitForm($form, $form_state);
        $this->rule
            ->getActions()
            ->getFormHandler()
            ->submitForm($form, $form_state);
    }

}