--- /dev/null
+<?php
+
+namespace Drupal\entity_embed\Plugin\entity_embed\EntityEmbedDisplay;
+
+use Drupal\Core\Access\AccessResult;
+use Drupal\Core\Entity\EntityTypeManagerInterface;
+use Drupal\Core\Field\FormatterPluginManager;
+use Drupal\Core\Form\FormStateInterface;
+use Drupal\Core\Image\ImageFactory;
+use Drupal\Core\Language\LanguageManagerInterface;
+use Drupal\Core\Session\AccountInterface;
+use Drupal\Core\TypedData\TypedDataManager;
+use Symfony\Component\DependencyInjection\ContainerInterface;
+
+/**
+ * Entity Embed Display reusing image field formatters.
+ *
+ * @see \Drupal\entity_embed\EntityEmbedDisplay\EntityEmbedDisplayInterface
+ *
+ * @EntityEmbedDisplay(
+ * id = "image",
+ * label = @Translation("Image"),
+ * entity_types = {"file"},
+ * deriver = "Drupal\entity_embed\Plugin\Derivative\FieldFormatterDeriver",
+ * field_type = "image",
+ * provider = "image"
+ * )
+ */
+class ImageFieldFormatter extends FileFieldFormatter {
+
+ /**
+ * The image factory.
+ *
+ * @var \Drupal\Core\Image\ImageFactory
+ */
+ protected $imageFactory;
+
+ /**
+ * {@inheritdoc}
+ *
+ * @param \Drupal\Core\Entity\EntityTypeManagerInterface $entity_type_manager
+ * The entity manager service.
+ * @param \Drupal\Core\Field\FormatterPluginManager $formatter_plugin_manager
+ * The field formatter plugin manager.
+ * @param \Drupal\Core\TypedData\TypedDataManager $typed_data_manager
+ * The typed data manager.
+ * @param \Drupal\Core\Image\ImageFactory $image_factory
+ * The image factory.
+ * @param \Drupal\Core\Language\LanguageManagerInterface $language_manager
+ * The language manager.
+ */
+ public function __construct(array $configuration, $plugin_id, $plugin_definition, EntityTypeManagerInterface $entity_type_manager, FormatterPluginManager $formatter_plugin_manager, TypedDataManager $typed_data_manager, ImageFactory $image_factory, LanguageManagerInterface $language_manager) {
+ parent::__construct($configuration, $plugin_id, $plugin_definition, $entity_type_manager, $formatter_plugin_manager, $typed_data_manager, $language_manager);
+ $this->imageFactory = $image_factory;
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public static function create(ContainerInterface $container, array $configuration, $plugin_id, $plugin_definition) {
+ return new static(
+ $configuration,
+ $plugin_id,
+ $plugin_definition,
+ $container->get('entity_type.manager'),
+ $container->get('plugin.manager.field.formatter'),
+ $container->get('typed_data_manager'),
+ $container->get('image.factory'),
+ $container->get('language_manager')
+ );
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function getFieldValue() {
+ $value = parent::getFieldValue();
+ // File field support descriptions, but images do not.
+ unset($value['description']);
+ $value += array_intersect_key($this->getAttributeValues(), array('alt' => '', 'title' => ''));
+ return $value;
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function access(AccountInterface $account = NULL) {
+ return parent::access($account)->andIf($this->isValidImage());
+ }
+
+ /**
+ * Checks if the image is valid.
+ *
+ * @return \Drupal\Core\Access\AccessResult
+ * Returns the access result.
+ */
+ protected function isValidImage() {
+ // If entity type is not file we have to return early to prevent fatal in
+ // the condition above. Access should already be forbidden at this point,
+ // which means this won't have any effect.
+ // @see EntityEmbedDisplayBase::access()
+ if ($this->getEntityTypeFromContext() != 'file') {
+ return AccessResult::forbidden();
+ }
+ $access = AccessResult::allowed();
+
+ // @todo needs cacheability metadata for getEntityFromContext.
+ // @see \Drupal\entity_embed\EntityEmbedDisplay\EntityEmbedDisplayBase::getEntityFromContext()
+ /** @var \Drupal\file\FileInterface $entity */
+ if ($entity = $this->getEntityFromContext()) {
+ // Loading large files is slow, make sure it is an image mime type before
+ // doing that.
+ list($type,) = explode('/', $entity->getMimeType(), 2);
+ $access = AccessResult::allowedIf($type == 'image' && $this->imageFactory->get($entity->getFileUri())->isValid())
+ // See the above @todo, this is the best we can do for now.
+ ->addCacheableDependency($entity);
+ }
+
+ return $access;
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function buildConfigurationForm(array $form, FormStateInterface $form_state) {
+ $form = parent::buildConfigurationForm($form, $form_state);
+
+ // File field support descriptions, but images do not.
+ unset($form['description']);
+
+ // Ensure that the 'Link image to: Content' setting is not available.
+ if ($this->getDerivativeId() == 'image') {
+ unset($form['image_link']['#options']['content']);
+ }
+
+ $entity_element = $form_state->get('entity_element');
+ // The alt attribute is *required*, but we allow users to opt-in to empty
+ // alt attributes for the very rare edge cases where that is valid by
+ // specifying two double quotes as the alternative text in the dialog.
+ // However, that *is* stored as an empty alt attribute, so if we're editing
+ // an existing image (which means the src attribute is set) and its alt
+ // attribute is empty, then we show that as two double quotes in the dialog.
+ // @see https://www.drupal.org/node/2307647
+ // Alt attribute behavior is taken from the Core image dialog to ensure a
+ // consistent UX across various forms.
+ // @see Drupal\editor\Form\EditorImageDialog::buildForm()
+ $alt = $this->getAttributeValue('alt', '');
+ if ($alt === '') {
+ // Do not change empty alt text to two double quotes if the previously
+ // used Entity Embed Display plugin was not 'image:image'. That means that
+ // some other plugin was used so if this image formatter is selected at a
+ // later stage, then this should be treated as a new edit. We show two
+ // double quotes in place of empty alt text only if that was filled
+ // intentionally by the user.
+ if (!empty($entity_element) && $entity_element['data-entity-embed-display'] == 'image:image') {
+ $alt = '""';
+ }
+ }
+
+ // Add support for editing the alternate and title text attributes.
+ $form['alt'] = array(
+ '#type' => 'textfield',
+ '#title' => $this->t('Alternate text'),
+ '#default_value' => $alt,
+ '#description' => $this->t('This text will be used by screen readers, search engines, or when the image cannot be loaded.'),
+ '#parents' => array('attributes', 'alt'),
+ '#required' => TRUE,
+ '#required_error' => $this->t('Alternative text is required.<br />(Only in rare cases should this be left empty. To create empty alternative text, enter <code>""</code> — two double quotes without any content).'),
+ '#maxlength' => 512,
+ );
+ $form['title'] = array(
+ '#type' => 'textfield',
+ '#title' => $this->t('Title'),
+ '#default_value' => $this->getAttributeValue('title', ''),
+ '#description' => t('The title is used as a tool tip when the user hovers the mouse over the image.'),
+ '#parents' => array('attributes', 'title'),
+ '#maxlength' => 1024,
+ );
+
+ return $form;
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function submitConfigurationForm(array &$form, FormStateInterface $form_state) {
+ // When the alt attribute is set to two double quotes, transform it to the
+ // empty string: two double quotes signify "empty alt attribute". See above.
+ if (trim($form_state->getValue(array('attributes', 'alt'))) === '""') {
+ $form_state->setValue(array('attributes', 'alt'), '');
+ }
+ }
+
+}
projects / yaffs-website / blobdiff