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Example for a paragraph behavior plugin
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| <?php | |
| namespace Drupal\behaviors\Plugin\paragraphs\Behavior; | |
| use Drupal\Core\Entity\Display\EntityViewDisplayInterface; | |
| use Drupal\Core\Form\FormStateInterface; | |
| use Drupal\paragraphs\Entity\Paragraph; | |
| use Drupal\paragraphs\ParagraphInterface; | |
| use Drupal\paragraphs\ParagraphsBehaviorBase; | |
| /** | |
| * Provides a paragraphs behaviour plugin for background styles. | |
| * | |
| * @ParagraphsBehavior( | |
| * id = "background_behavior", | |
| * label = @Translation("Background style"), | |
| * description = @Translation("Configurable background style"), | |
| * ) | |
| */ | |
| class BackgroundBehavior extends ParagraphsBehaviorBase { | |
| /** | |
| * {@inheritdoc} | |
| */ | |
| public function view(array &$build, Paragraph $paragraph, EntityViewDisplayInterface $display, $view_mode) { | |
| $style = $paragraph->getBehaviorSetting($this->getPluginId(), 'style', 'bright'); | |
| $build['#attributes']['class'][] = 'paragraph-background-' . $style; | |
| $build['#attached']['library'][] = 'behaviors/styles'; | |
| } | |
| /** | |
| * {@inheritdoc} | |
| */ | |
| public function buildBehaviorForm(ParagraphInterface $paragraph, array &$form, FormStateInterface $form_state) { | |
| $form['style'] = [ | |
| '#type' => 'radios', | |
| '#title' => $this->t('Background style'), | |
| '#default_value' => $paragraph->getBehaviorSetting($this->getPluginId(), 'style', 'bright'), | |
| '#options' => [ | |
| 'dark' => $this->t('Dark background, bright text'), | |
| 'bright' => $this->t('Bright background, dark text'), | |
| ], | |
| ]; | |
| return $form; | |
| } | |
| /** | |
| * {@inheritdoc} | |
| */ | |
| public function settingsSummary(Paragraph $paragraph) { | |
| $style = $paragraph->getBehaviorSetting('background_behavior', 'style', 'bright'); | |
| return [$this->t('Background style: @style', ['@style' => $style])]; | |
| } | |
| } |
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