MediaThumbnailFormatter.php
Same filename in other branches
Namespace
Drupal\media\Plugin\Field\FieldFormatterFile
-
core/
modules/ media/ src/ Plugin/ Field/ FieldFormatter/ MediaThumbnailFormatter.php
View source
<?php
namespace Drupal\media\Plugin\Field\FieldFormatter;
use Drupal\Core\Entity\EntityInterface;
use Drupal\Core\Field\FieldItemListInterface;
use Drupal\Core\Form\FormStateInterface;
use Drupal\Core\Session\AccountInterface;
use Drupal\image\ImageStyleStorageInterface;
use Drupal\image\Plugin\Field\FieldFormatter\ImageFormatter;
use Drupal\Core\Field\Plugin\Field\FieldType\EntityReferenceItem;
use Drupal\Core\Render\RendererInterface;
use Drupal\media\MediaInterface;
use Symfony\Component\DependencyInjection\ContainerInterface;
use Drupal\Core\Field\FieldDefinitionInterface;
/**
* Plugin implementation of the 'media_thumbnail' formatter.
*
* @FieldFormatter(
* id = "media_thumbnail",
* label = @Translation("Thumbnail"),
* field_types = {
* "entity_reference"
* }
* )
*/
class MediaThumbnailFormatter extends ImageFormatter {
/**
* The renderer service.
*
* @var \Drupal\Core\Render\RendererInterface
*/
protected $renderer;
/**
* Constructs an MediaThumbnailFormatter 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\image\ImageStyleStorageInterface $image_style_storage
* The image style entity storage handler.
* @param \Drupal\Core\Render\RendererInterface $renderer
* The renderer service.
*/
public function __construct($plugin_id, $plugin_definition, FieldDefinitionInterface $field_definition, array $settings, $label, $view_mode, array $third_party_settings, AccountInterface $current_user, ImageStyleStorageInterface $image_style_storage, RendererInterface $renderer) {
parent::__construct($plugin_id, $plugin_definition, $field_definition, $settings, $label, $view_mode, $third_party_settings, $current_user, $image_style_storage);
$this->renderer = $renderer;
}
/**
* {@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('image_style'), $container->get('renderer'));
}
/**
* {@inheritdoc}
*
* This has to be overridden because FileFormatterBase expects $item to be
* of type \Drupal\file\Plugin\Field\FieldType\FileItem and calls
* isDisplayed() which is not in FieldItemInterface.
*/
protected function needsEntityLoad(EntityReferenceItem $item) {
return !$item->hasNewEntity();
}
/**
* {@inheritdoc}
*/
public function settingsForm(array $form, FormStateInterface $form_state) {
$element = parent::settingsForm($form, $form_state);
$link_types = [
'content' => $this->t('Content'),
'media' => $this->t('Media item'),
];
$element['image_link']['#options'] = $link_types;
return $element;
}
/**
* {@inheritdoc}
*/
public function settingsSummary() {
$summary = parent::settingsSummary();
$link_types = [
'content' => $this->t('Linked to content'),
'media' => $this->t('Linked to media item'),
];
// Display this setting only if image is linked.
$image_link_setting = $this->getSetting('image_link');
if (isset($link_types[$image_link_setting])) {
$summary[] = $link_types[$image_link_setting];
}
return $summary;
}
/**
* {@inheritdoc}
*/
public function viewElements(FieldItemListInterface $items, $langcode) {
$elements = [];
$media_items = $this->getEntitiesToView($items, $langcode);
// Early opt-out if the field is empty.
if (empty($media_items)) {
return $elements;
}
$image_style_setting = $this->getSetting('image_style');
/** @var \Drupal\media\MediaInterface[] $media_items */
foreach ($media_items as $delta => $media) {
$elements[$delta] = [
'#theme' => 'image_formatter',
'#item' => $media->get('thumbnail')
->first(),
'#item_attributes' => [],
'#image_style' => $this->getSetting('image_style'),
'#url' => $this->getMediaThumbnailUrl($media, $items->getEntity()),
];
// Add cacheability of each item in the field.
$this->renderer
->addCacheableDependency($elements[$delta], $media);
}
// Add cacheability of the image style setting.
if ($this->getSetting('image_link') && ($image_style = $this->imageStyleStorage
->load($image_style_setting))) {
$this->renderer
->addCacheableDependency($elements, $image_style);
}
return $elements;
}
/**
* {@inheritdoc}
*/
public static function isApplicable(FieldDefinitionInterface $field_definition) {
// This formatter is only available for entity types that reference
// media items.
return $field_definition->getFieldStorageDefinition()
->getSetting('target_type') == 'media';
}
/**
* Get the URL for the media thumbnail.
*
* @param \Drupal\media\MediaInterface $media
* The media item.
* @param \Drupal\Core\Entity\EntityInterface $entity
* The entity that the field belongs to.
*
* @return \Drupal\Core\Url|null
* The URL object for the media item or null if we don't want to add
* a link.
*/
protected function getMediaThumbnailUrl(MediaInterface $media, EntityInterface $entity) {
$url = NULL;
$image_link_setting = $this->getSetting('image_link');
// Check if the formatter involves a link.
if ($image_link_setting == 'content') {
if (!$entity->isNew()) {
$url = $entity->toUrl();
}
}
elseif ($image_link_setting === 'media') {
$url = $media->toUrl();
}
return $url;
}
}
Classes
Title | Deprecated | Summary |
---|---|---|
MediaThumbnailFormatter | Plugin implementation of the 'media_thumbnail' formatter. |
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