PanopolyMediaResponsiveThumbnail.php in Panopoly 8.2

Namespace

Drupal\panopoly_media\Plugin\Field\FieldFormatter

File

modules/panopoly/panopoly_media/src/Plugin/Field/FieldFormatter/PanopolyMediaResponsiveThumbnail.php

<?php

namespace Drupal\panopoly_media\Plugin\Field\FieldFormatter;

use Drupal\Core\Cache\Cache;
use Drupal\Core\Entity\EntityStorageInterface;
use Drupal\Core\Field\FieldDefinitionInterface;
use Drupal\Core\Field\FieldItemListInterface;
use Drupal\Core\Form\FormStateInterface;
use Drupal\Core\Render\RendererInterface;
use Drupal\Core\Session\AccountInterface;
use Drupal\Core\Url;
use Drupal\Core\Utility\LinkGeneratorInterface;
use Drupal\image\ImageStyleStorageInterface;
use Drupal\media\Plugin\Field\FieldFormatter\MediaThumbnailFormatter;
use Drupal\responsive_image\Entity\ResponsiveImageStyle;
use Symfony\Component\DependencyInjection\ContainerInterface;

/**
 * Plugin implementation of the 'Responsive thumbnail' formatter.
 *
 * @FieldFormatter(
 *   id = "panopoly_media_responsive_thumbnail",
 *   label = @Translation("Responsive thumbnail"),
 *   field_types = {
 *     "entity_reference"
 *   }
 * )
 */
class PanopolyMediaResponsiveThumbnail extends MediaThumbnailFormatter {

  /**
   * The image style entity storage handler.
   *
   * @var \Drupal\Core\Entity\EntityStorageInterface
   */
  protected $responsiveImageStyleStorage;

  /**
   * The link generator.
   *
   * @var \Drupal\Core\Utility\LinkGeneratorInterface
   */
  protected $linkGenerator;

  /**
   * Constructs an PanopolyMediaResponsiveThumbnailFormatter object.
   *
   * @param string $plugin_id
   *   The plugin_id for the formatter.
   * @param mixed $plugin_definition
   *   The plugin implementation definition.
   * @param \Drupal\Core\Field\FieldDefinitionInterface $field_definition
   *   The definition of the field to which the formatter is associated.
   * @param array $settings
   *   The formatter settings.
   * @param string $label
   *   The formatter label display setting.
   * @param string $view_mode
   *   The view mode.
   * @param array $third_party_settings
   *   Any third party settings settings.
   * @param \Drupal\Core\Session\AccountInterface $current_user
   *   The current user.
   * @param \Drupal\Core\Entity\EntityStorageInterface $responsive_image_style_storage
   *   The responsive image style storage.
   * @param \Drupal\image\ImageStyleStorageInterface $image_style_storage
   *   The image style entity storage handler.
   * @param \Drupal\Core\Render\RendererInterface $renderer
   *   The renderer service.
   * @param \Drupal\Core\Utility\LinkGeneratorInterface $link_generator
   *   The link generator service.
   */
  public function __construct($plugin_id, $plugin_definition, FieldDefinitionInterface $field_definition, array $settings, $label, $view_mode, array $third_party_settings, AccountInterface $current_user, EntityStorageInterface $responsive_image_style_storage, ImageStyleStorageInterface $image_style_storage, RendererInterface $renderer, LinkGeneratorInterface $link_generator) {
    parent::__construct($plugin_id, $plugin_definition, $field_definition, $settings, $label, $view_mode, $third_party_settings, $current_user, $image_style_storage, $renderer);
    $this->responsiveImageStyleStorage = $responsive_image_style_storage;
    $this->linkGenerator = $link_generator;
  }

  /**
   * {@inheritdoc}
   */
  public static function create(ContainerInterface $container, array $configuration, $plugin_id, $plugin_definition) {
    return new static($plugin_id, $plugin_definition, $configuration['field_definition'], $configuration['settings'], $configuration['label'], $configuration['view_mode'], $configuration['third_party_settings'], $container
      ->get('current_user'), $container
      ->get('entity_type.manager')
      ->getStorage('responsive_image_style'), $container
      ->get('entity_type.manager')
      ->getStorage('image_style'), $container
      ->get('renderer'), $container
      ->get('link_generator'));
  }

  /**
   * {@inheritdoc}
   */
  public static function defaultSettings() {
    $settings = parent::defaultSettings() + [
      'responsive_image_style' => '',
    ];
    unset($settings['image_style']);
    return $settings;
  }

  /**
   * {@inheritdoc}
   */
  public function settingsForm(array $form, FormStateInterface $form_state) {
    $form = parent::settingsForm($form, $form_state);
    unset($form['image_style']);
    $responsive_image_options = [];
    $responsive_image_styles = $this->responsiveImageStyleStorage
      ->loadMultiple();
    if ($responsive_image_styles && !empty($responsive_image_styles)) {
      foreach ($responsive_image_styles as $machine_name => $responsive_image_style) {
        if ($responsive_image_style
          ->hasImageStyleMappings()) {
          $responsive_image_options[$machine_name] = $responsive_image_style
            ->label();
        }
      }
    }
    $form['responsive_image_style'] = [
      '#title' => t('Responsive image style'),
      '#type' => 'select',
      '#default_value' => $this
        ->getSetting('responsive_image_style'),
      '#required' => TRUE,
      '#options' => $responsive_image_options,
      '#description' => [
        '#markup' => $this->linkGenerator
          ->generate($this
          ->t('Configure Responsive Image Styles'), new Url('entity.responsive_image_style.collection')),
        '#access' => $this->currentUser
          ->hasPermission('administer responsive image styles'),
      ],
    ];
    return $form;
  }

  /**
   * {@inheritdoc}
   */
  public function settingsSummary() {
    $summary = parent::settingsSummary();
    $responsive_image_style = $this->responsiveImageStyleStorage
      ->load($this
      ->getSetting('responsive_image_style'));
    if ($responsive_image_style) {
      $summary[0] = t('Responsive image style: @responsive_image_style', [
        '@responsive_image_style' => $responsive_image_style
          ->label(),
      ]);
    }
    else {
      $summary = [
        t('Select a responsive image style.'),
      ];
    }
    return $summary;
  }

  /**
   * {@inheritdoc}
   */
  public function viewElements(FieldItemListInterface $items, $langcode) {
    $elements = [];

    /** @var \Drupal\media\MediaInterface[] $media_items */
    $media_items = $this
      ->getEntitiesToView($items, $langcode);

    // Early opt-out if the field is empty.
    if (empty($media_items)) {
      return $elements;
    }

    // Collect cache tags to be added for each item in the field.
    $responsive_image_style = $this->responsiveImageStyleStorage
      ->load($this
      ->getSetting('responsive_image_style'));
    $image_styles_to_load = [];
    $cache_tags = [];
    if ($responsive_image_style) {
      $cache_tags = Cache::mergeTags($cache_tags, $responsive_image_style
        ->getCacheTags());
      $image_styles_to_load = $responsive_image_style
        ->getImageStyleIds();
    }
    $image_styles = $this->imageStyleStorage
      ->loadMultiple($image_styles_to_load);
    foreach ($image_styles as $image_style) {
      $cache_tags = Cache::mergeTags($cache_tags, $image_style
        ->getCacheTags());
    }
    foreach ($media_items as $delta => $media_item) {
      $file = $media_item
        ->get('thumbnail')
        ->first();

      // Extract field item attributes for the theme function, and unset them
      // from the $item so that the field template does not re-render them.
      $file_attributes = $file->_attributes;
      unset($file->_attributes);
      $elements[$delta] = [
        '#theme' => 'responsive_image_formatter',
        '#item' => $file,
        '#item_attributes' => $file_attributes,
        '#responsive_image_style_id' => $responsive_image_style ? $responsive_image_style
          ->id() : '',
        '#url' => $this
          ->getMediaThumbnailUrl($media_item, $items
          ->getEntity()),
        '#cache' => [
          'tags' => $cache_tags,
        ],
      ];
    }
    return $elements;
  }

  /**
   * {@inheritdoc}
   */
  public function calculateDependencies() {
    $dependencies = parent::calculateDependencies();
    $style_id = $this
      ->getSetting('responsive_image_style');

    /** @var \Drupal\responsive_image\ResponsiveImageStyleInterface $style */
    if ($style_id && ($style = ResponsiveImageStyle::load($style_id))) {

      // Add the responsive image style as dependency.
      $dependencies[$style
        ->getConfigDependencyKey()][] = $style
        ->getConfigDependencyName();
    }
    return $dependencies;
  }

}

Classes

Name	Description
PanopolyMediaResponsiveThumbnail	Plugin implementation of the 'Responsive thumbnail' formatter.