--- /dev/null
+<?php
+
+namespace Drupal\paragraphs_test\Plugin\paragraphs\Behavior;
+use Drupal\Core\Entity\Display\EntityViewDisplayInterface;
+use Drupal\Core\Form\FormStateInterface;
+use Drupal\paragraphs\Entity\Paragraph;
+use Drupal\paragraphs\ParagraphsBehaviorBase;
+
+/**
+ * Test plugin with field selection.
+ *
+ * @ParagraphsBehavior(
+ * id = "test_field_selection",
+ * label = @Translation("Test field selection for behavior plugin"),
+ * description = @Translation("Test field selection for behavior plugin"),
+ * weight = 0
+ * )
+ */
+class TestFieldsSelectionBehavior extends ParagraphsBehaviorBase {
+
+ /**
+ * {@inheritdoc}
+ */
+ public function buildConfigurationForm(array $form, FormStateInterface $form_state) {
+ $form['field_selection_filter'] = [
+ '#type' => 'select',
+ '#options' => $this->getFieldNameOptions($form_state->getFormObject()->getEntity(), 'image'),
+ '#title' => $this->t('Paragraph fields'),
+ '#default_value' => $this->configuration['field_selection_filter'],
+ '#description' => $this->t("Choose filtered paragraph field to be applied."),
+ ];
+
+ $form['field_selection'] = [
+ '#type' => 'select',
+ '#options' => $this->getFieldNameOptions($form_state->getFormObject()->getEntity()),
+ '#title' => $this->t('Paragraph fields'),
+ '#default_value' => $this->configuration['field_selection'],
+ '#description' => $this->t("Choose paragraph field to be applied."),
+ ];
+ return $form;
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function defaultConfiguration() {
+ return [
+ 'field_selection' => '',
+ 'field_selection_filter' => '',
+ ];
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function view(array &$build, Paragraph $paragraphs_entity, EntityViewDisplayInterface $display, $view_mode) {}
+
+}