Issue #2878835 by toncic, Primsi, Berdir: Add hook function for altering...

Issue #2878835 by toncic, Primsi, Berdir: Add hook function for altering prepareEntities function in eb_widget

modules/eb_widget/dropzonejs_eb_widget.api.php

+<?php
+
+/**
+ * @file
+ * Hooks and documentation related to dropzonejs_eb_widget module.
+ */
+
+use Drupal\file\Entity\File;
+
+/**
+ * Alter media entity values before creation in eb widget.
+ *
+ * @param array $entity_values
+ *   Entity values for current media entity.
+ * @param \Drupal\file\Entity\File $file
+ *   File entity used as source for the media entity.
+ */
+function hook_dropzonejs_eb_media_entity_prepare_alter(array &$entity_values, File $file) {
+  if ($file->getMimeType() === 'image/gif') {
+    $entity_values['bundle'] = 'gif';
+  }
+}

modules/eb_widget/src/Plugin/EntityBrowser/Widget/MediaEntityDropzoneJsEbWidget.php

@@ -162,13 +162,15 @@ class MediaEntityDropzoneJsEbWidget extends DropzoneJsEbWidget {
     $bundle = $this->getBundle();
 
     foreach (parent::prepareEntities($form, $form_state) as $file) {
-      $entities[] = $this->entityTypeManager->getStorage('media')->create([
+      $entity_values = [
         'bundle' => $bundle->id(),
         $bundle->getTypeConfiguration()['source_field'] => $file,
         'uid' => $this->currentUser->id(),
         'status' => TRUE,
         'type' => $bundle->getType()->getPluginId(),
-      ]);
+      ];
+      $this->moduleHandler->alter('dropzonejs_eb_media_entity_prepare', $entity_values, $file);
+      $entities[] = $this->entityTypeManager->getStorage('media')->create($entity_values);
     }
 
     return $entities;