ImageEffectEditForm.php

<?php

namespace Drupal\image\Form;

use Drupal\Core\Form\FormStateInterface;
use Drupal\image\ImageStyleInterface;

/**
 * Provides an edit form for image effects.
 *
 * @internal
 */
class ImageEffectEditForm extends ImageEffectFormBase {
    
    /**
     * {@inheritdoc}
     */
    public function buildForm(array $form, FormStateInterface $form_state, ImageStyleInterface $image_style = NULL, $image_effect = NULL) {
        $form = parent::buildForm($form, $form_state, $image_style, $image_effect);
        $form['#title'] = $this->t('Edit %label effect on style %style', [
            '%label' => $this->imageEffect
                ->label(),
            '%style' => $image_style->label(),
        ]);
        $form['actions']['submit']['#value'] = $this->t('Update effect');
        return $form;
    }
    
    /**
     * {@inheritdoc}
     */
    protected function prepareImageEffect($image_effect) {
        return $this->imageStyle
            ->getEffect($image_effect);
    }

}