Slideshow.php in Media entity slideshow 8.2

Namespace

Drupal\media_entity_slideshow\Plugin\media\Source

File

src/Plugin/media/Source/Slideshow.php

<?php

namespace Drupal\media_entity_slideshow\Plugin\media\Source;

use Drupal\datetime\Plugin\Field\FieldType\DateTimeItemInterface;
use Drupal\media\MediaInterface;
use Drupal\media\MediaSourceBase;
use Drupal\media\MediaSourceEntityConstraintsInterface;

/**
 * Provides media type plugin for Slideshows.
 *
 * @MediaSource(
 *   id = "slideshow",
 *   label = @Translation("Slideshow"),
 *   description = @Translation("Provides business logic and metadata for slideshows."),
 *   default_thumbnail_filename = "slideshow.png",
 *   allowed_field_types = {"entity_reference"},
 * )
 */
class Slideshow extends MediaSourceBase implements MediaSourceEntityConstraintsInterface {

  /**
   * {@inheritdoc}
   */
  public function getMetadataAttributes() {
    $attributes = [
      'length' => $this
        ->t('Slideshow length'),
    ];
    return $attributes;
  }

  /**
   * {@inheritdoc}
   */
  public function getMetadata(MediaInterface $media, $name) {
    $source_field = $this->configuration['source_field'];
    switch ($name) {
      case 'default_name':

        // The default name will be the timestamp + number of slides.
        $length = $this
          ->getMetadata($media, 'length');
        if (!empty($length)) {
          return $this
            ->formatPlural($length, '1 slide, created on @date', '@count slides, created on @date', [
            '@date' => \Drupal::service('date.formatter')
              ->format($media
              ->getCreatedTime(), 'custom', DateTimeItemInterface::DATETIME_STORAGE_FORMAT),
          ]);
        }
        return parent::getMetadata($media, 'default_name');
      case 'length':
        return $media->{$source_field}
          ->count();
      case 'thumbnail_uri':
        $source_field = $this->configuration['source_field'];
        if (empty($media->{$source_field}->target_id)) {
          return parent::getMetadata($media, 'thumbnail_uri');
        }

        /** @var \Drupal\media\MediaInterface $slideshow_item */
        $slideshow_item = $this->entityTypeManager
          ->getStorage('media')
          ->load($media->{$source_field}->target_id);
        if (!$slideshow_item) {
          return parent::getMetadata($media, 'thumbnail_uri');
        }

        /** @var \Drupal\media\MediaTypeInterface $bundle */
        $bundle = $this->entityTypeManager
          ->getStorage('media_type')
          ->load($slideshow_item
          ->bundle());
        if (!$bundle) {
          return parent::getMetadata($media, 'thumbnail_uri');
        }
        $thumbnail = $bundle
          ->getSource()
          ->getMetadata($slideshow_item, 'thumbnail_uri');
        if (!$thumbnail) {
          return parent::getMetadata($media, 'thumbnail_uri');
        }
        return $thumbnail;
      default:
        return parent::getMetadata($media, $name);
    }
  }

  /**
   * {@inheritdoc}
   */
  public function getEntityConstraints() {
    $source_field = $this->configuration['source_field'];
    return [
      'ItemsCount' => [
        'sourceFieldName' => $source_field,
      ],
    ];
  }

}

Classes

Name	Description
Slideshow	Provides media type plugin for Slideshows.