diff --git a/paragraphs.module b/paragraphs.module
index 7d73bfd..020f2ff 100644
--- a/paragraphs.module
+++ b/paragraphs.module
@@ -95,58 +95,6 @@ function paragraphs_form_entity_form_display_edit_form_alter(&$form, \Drupal\Cor
 }
 
 /**
- * Implements hook_form_FORM_ID_alter().
- */
-function paragraphs_form_field_storage_config_edit_form_alter(&$form, \Drupal\Core\Form\FormStateInterface $form_state, $form_id) {
-  if ($form_state->getFormObject()->getEntity()->getType() == 'entity_reference') {
-    // Entity Reference fields are no longer supported to reference Paragraphs.
-    unset($form['settings']['target_type']['#options'][(string) t('Content')]['paragraph']);
-  }
-}
-
-/**
- * Implements hook_form_FORM_ID_alter().
- *
- * Indicate unsupported multilingual paragraphs field configuration.
- */
-function paragraphs_form_field_config_edit_form_alter(&$form,  \Drupal\Core\Form\FormStateInterface $form_state, $form_id) {
-  $field = $form_state->getFormObject()->getEntity();
-
-  if (!\Drupal::hasService('content_translation.manager')) {
-    return;
-  }
-
-  $bundle_is_translatable = \Drupal::service('content_translation.manager')
-    ->isEnabled($field->getTargetEntityTypeId(), $field->getTargetBundle());
-
-  if (!$bundle_is_translatable
-    || $field->getType() != 'entity_reference_revisions'
-    || $field->getSetting('target_type') != 'paragraph') {
-    return;
-  }
-
-  // This is a translatable ERR field pointing to a paragraph.
-  $message_display = 'warning';
-  $message_text = t('Paragraphs fields do not support translation. See the <a href=":documentation">online documentation</a>.', [
-    ':documentation' => Url::fromUri('https://www.drupal.org/node/2735121')
-      ->toString()
-  ]);
-
-  if ($form['translatable']['#default_value'] == TRUE) {
-    $message_display = 'error';
-  }
-
-  $form['paragraphs_message'] = array(
-    '#type' => 'container',
-    '#markup' => $message_text,
-    '#attributes' => array(
-      'class' => array('messages messages--' . $message_display),
-    ),
-    '#weight' => 0,
-  );
-}
-
-/**
  * Implements hook_module_implements_alter().
  *
  * Our paragraphs_form_field_config_edit_form_alter() needs to be run after
@@ -165,56 +113,6 @@ function paragraphs_module_implements_alter(&$implementations, $hook) {
 }
 
 /**
- * Implements hook_form_FORM_ID_alter().
- *
- * Indicate unsupported multilingual paragraphs field configuration.
- *
- * Add a warning that paragraph fields can not be translated.
- * Switch to error if a paragraph field is marked as translatable.
- */
-function paragraphs_form_language_content_settings_form_alter(&$form, \Drupal\Core\Form\FormStateInterface $form_state, $form_id) {
-  // Without it Paragraphs message are meaningless.
-  if (!\Drupal::hasService('content_translation.manager')) {
-    return;
-  }
-
-  $content_translation_manager = \Drupal::service('content_translation.manager');
-  $message_display = 'warning';
-  $message_text = t('(* unsupported) Paragraphs fields do not support translation. See the <a href=":documentation">online documentation</a>.', [
-    ':documentation' => Url::fromUri('https://www.drupal.org/node/2735121')
-      ->toString()]);
-  $map = \Drupal::service('entity_field.manager')->getFieldMapByFieldType('entity_reference_revisions');
-  foreach ($map as $entity_type_id => $info) {
-    if (!$content_translation_manager->isEnabled($entity_type_id)) {
-      continue;
-    }
-    $field_storage_definitions = \Drupal::service('entity_field.manager')->getFieldStorageDefinitions($entity_type_id);
-    foreach ($field_storage_definitions as $name => $data) {
-      if ($data->getSetting('target_type') && $data->getSetting('target_type') == 'paragraph') {
-        foreach($data->getBundles() as $bundle) {
-          if (!$content_translation_manager->isEnabled($entity_type_id, $bundle)) {
-            continue;
-          }
-          $form['settings'][$entity_type_id][$bundle]['fields'][$name]['#label'] .= ' (* unsupported)';
-          if ($form['settings'][$entity_type_id][$bundle]['fields'][$name]['#default_value']) {
-            $message_display = 'error';
-          }
-        }
-      }
-    }
-  }
-  $form['settings']['paragraphs_message'] = array(
-    '#type' => 'container',
-    '#markup' => $message_text,
-    '#attributes' => array(
-      'class' => array('messages messages--' . $message_display),
-    ),
-    '#weight' => 0,
-  );
-  return $form;
-}
-
-/**
  * Prepares variables for paragraph templates.
  *
  * Default template: paragraph.html.twig.
diff --git a/src/Plugin/Field/FieldWidget/InlineParagraphsWidget.php b/src/Plugin/Field/FieldWidget/InlineParagraphsWidget.php
index 35aac3f..e9c202d 100644
--- a/src/Plugin/Field/FieldWidget/InlineParagraphsWidget.php
+++ b/src/Plugin/Field/FieldWidget/InlineParagraphsWidget.php
@@ -4,6 +4,7 @@ namespace Drupal\paragraphs\Plugin\Field\FieldWidget;
 
 use Drupal\Component\Utility\NestedArray;
 use Drupal\Component\Utility\Html;
+use Drupal\Core\Entity\ContentEntityInterface;
 use Drupal\Core\Entity\Entity\EntityFormDisplay;
 use Drupal\Core\Entity\EntityInterface;
 use Drupal\Core\Entity\RevisionableInterface;
@@ -13,7 +14,9 @@ use Drupal\Core\Field\WidgetBase;
 use Drupal\Core\Form\FormStateInterface;
 use Drupal\Core\Field\FieldItemListInterface;
 use Drupal\Core\Render\Element;
+use Drupal\field\Entity\FieldConfig;
 use Drupal\paragraphs;
+use Drupal\paragraphs\Entity\Paragraph;
 use Symfony\Component\Validator\ConstraintViolationInterface;
 
 
@@ -140,14 +143,15 @@ class InlineParagraphsWidget extends WidgetBase {
 
     $elements['form_display_mode'] = array(
       '#type' => 'select',
-      '#options' => \Drupal::service('entity_display.repository')->getFormModeOptions($this->getFieldSetting('target_type')),
+      '#options' => \Drupal::service('entity_display.repository')
+        ->getFormModeOptions($this->getFieldSetting('target_type')),
       '#description' => $this->t('The form display mode to use when rendering the paragraph form.'),
       '#title' => $this->t('Form display mode'),
       '#default_value' => $this->getSetting('form_display_mode'),
       '#required' => TRUE,
     );
 
-    $options  = [];
+    $options = [];
     foreach ($this->getAllowedTypes() as $key => $bundle) {
       $options[$key] = $bundle['label'];
     }
@@ -174,7 +178,7 @@ class InlineParagraphsWidget extends WidgetBase {
       '@title_plural' => $this->getSetting('title_plural')
     ]);
 
-    switch($this->getSetting('edit_mode')) {
+    switch ($this->getSetting('edit_mode')) {
       case 'open':
       default:
         $edit_mode = $this->t('Open');
@@ -187,7 +191,7 @@ class InlineParagraphsWidget extends WidgetBase {
         break;
     }
 
-    switch($this->getSetting('add_mode')) {
+    switch ($this->getSetting('add_mode')) {
       case 'select':
       default:
         $add_mode = $this->t('Select list');
@@ -226,7 +230,6 @@ class InlineParagraphsWidget extends WidgetBase {
     $info = [];
 
     $paragraphs_entity = NULL;
-    $host = $items->getEntity();
     $widget_state = static::getWidgetState($parents, $field_name, $form_state);
 
     $entity_manager = \Drupal::entityTypeManager();
@@ -262,9 +265,10 @@ class InlineParagraphsWidget extends WidgetBase {
       $entity_type = $entity_manager->getDefinition($target_type);
       $bundle_key = $entity_type->getKey('bundle');
 
-      $paragraphs_entity = $entity_manager->getStorage($target_type)->create(array(
-        $bundle_key => $widget_state['selected_bundle'],
-      ));
+      $paragraphs_entity = $entity_manager->getStorage($target_type)
+        ->create(array(
+          $bundle_key => $widget_state['selected_bundle'],
+        ));
 
       $item_mode = 'edit';
     }
@@ -293,55 +297,17 @@ class InlineParagraphsWidget extends WidgetBase {
     }
 
     if ($paragraphs_entity) {
-      // Detect if we are translating.
-      $this->initIsTranslating($form_state, $host);
-      $langcode = $form_state->get('langcode');
-
-      if (!$this->isTranslating) {
-        // Set the langcode if we are not translating.
-        $langcode_key = $paragraphs_entity->getEntityType()->getKey('langcode');
-        if ($paragraphs_entity->get($langcode_key)->value != $langcode) {
-          // If a translation in the given language already exists, switch to
-          // that. If there is none yet, update the language.
-          if ($paragraphs_entity->hasTranslation($langcode)) {
-            $paragraphs_entity = $paragraphs_entity->getTranslation($langcode);
-          }
-          else {
-            $paragraphs_entity->set($langcode_key, $langcode);
-          }
-        }
-      }
-      else {
-        // Add translation if missing for the target language.
-        if (!$paragraphs_entity->hasTranslation($langcode)) {
-          // Get the selected translation of the paragraph entity.
-          $entity_langcode = $paragraphs_entity->language()->getId();
-          $source = $form_state->get(['content_translation', 'source']);
-          $source_langcode = $source ? $source->getId() : $entity_langcode;
-          $paragraphs_entity = $paragraphs_entity->getTranslation($source_langcode);
-          // The paragraphs entity has no content translation source field if
-          // no paragraph entity field is translatable, even if the host is.
-          if ($paragraphs_entity->hasField('content_translation_source')) {
-            // Initialise the translation with source language values.
-            $paragraphs_entity->addTranslation($langcode, $paragraphs_entity->toArray());
-            $translation = $paragraphs_entity->getTranslation($langcode);
-            $manager = \Drupal::service('content_translation.manager');
-            $manager->getTranslationMetadata($translation)->setSource($paragraphs_entity->language()->getId());
-          }
-        }
-        // If any paragraphs type is translatable do not switch.
-        if ($paragraphs_entity->hasField('content_translation_source')) {
-          // Switch the paragraph to the translation.
-          $paragraphs_entity = $paragraphs_entity->getTranslation($langcode);
-        }
-      }
+      $paragraphs_entity = $this->prepareEntity($paragraphs_entity, $items, $form_state);
 
       $element_parents = $parents;
       $element_parents[] = $field_name;
       $element_parents[] = $delta;
       $element_parents[] = 'subform';
 
-      $id_prefix = implode('-', array_merge($parents, array($field_name, $delta)));
+      $id_prefix = implode('-', array_merge($parents, array(
+        $field_name,
+        $delta
+      )));
       $wrapper_id = Html::getUniqueId($id_prefix . '-item-wrapper');
 
       $element += array(
@@ -356,7 +322,8 @@ class InlineParagraphsWidget extends WidgetBase {
       $element['#prefix'] = '<div id="' . $wrapper_id . '">';
       $element['#suffix'] = '</div>';
 
-      $item_bundles = \Drupal::service('entity_type.bundle.info')->getBundleInfo($target_type);
+      $item_bundles = \Drupal::service('entity_type.bundle.info')
+        ->getBundleInfo($target_type);
       if (isset($item_bundles[$paragraphs_entity->bundle()])) {
         $bundle_info = $item_bundles[$paragraphs_entity->bundle()];
 
@@ -388,7 +355,8 @@ class InlineParagraphsWidget extends WidgetBase {
         $links = array();
 
         // Hide the button when translating.
-        $button_access = $paragraphs_entity->access('delete') && !$this->isTranslating;
+        $button_access = $paragraphs_entity->access('delete') && (!$this->isTranslating || $items->getFieldDefinition()
+              ->isTranslatable());
         if ($item_mode != 'remove') {
           $links['remove_button'] = [
             '#type' => 'submit',
@@ -419,7 +387,12 @@ class InlineParagraphsWidget extends WidgetBase {
               '#value' => $this->t('Collapse'),
               '#name' => strtr($id_prefix, '-', '_') . '_collapse',
               '#weight' => 499,
-              '#submit' => array(array(get_class($this), 'paragraphsItemSubmit')),
+              '#submit' => array(
+                array(
+                    get_class($this),
+                    'paragraphsItemSubmit'
+                  )
+              ),
               '#delta' => $delta,
               '#ajax' => array(
                 'callback' => array(get_class($this), 'itemAjax'),
@@ -465,7 +438,12 @@ class InlineParagraphsWidget extends WidgetBase {
             '#name' => strtr($id_prefix, '-', '_') . '_edit',
             '#weight' => 500,
             '#submit' => array(array(get_class($this), 'paragraphsItemSubmit')),
-            '#limit_validation_errors' => array(array_merge($parents, array($field_name, 'add_more'))),
+            '#limit_validation_errors' => array(
+              array_merge($parents, array(
+                  $field_name,
+                  'add_more'
+                ))
+            ),
             '#delta' => $delta,
             '#ajax' => array(
               'callback' => array(get_class($this), 'itemAjax'),
@@ -559,7 +537,7 @@ class InlineParagraphsWidget extends WidgetBase {
 
         if (count($links)) {
           $show_links = 0;
-          foreach($links as $link_item) {
+          foreach ($links as $link_item) {
             if (!isset($link_item['#access']) || $link_item['#access']) {
               $show_links++;
             }
@@ -569,7 +547,10 @@ class InlineParagraphsWidget extends WidgetBase {
 
             $element['top']['links'] = $links;
             if ($show_links > 1) {
-              $element['top']['links']['#theme_wrappers'] = array('dropbutton_wrapper', 'paragraphs_dropbutton_wrapper');
+              $element['top']['links']['#theme_wrappers'] = array(
+                'dropbutton_wrapper',
+                'paragraphs_dropbutton_wrapper'
+              );
               $element['top']['links']['prefix'] = array(
                 '#markup' => '<ul class="dropbutton">',
                 '#weight' => -999,
@@ -581,7 +562,7 @@ class InlineParagraphsWidget extends WidgetBase {
             }
             else {
               $element['top']['links']['#theme_wrappers'] = array('paragraphs_dropbutton_wrapper');
-              foreach($links as $key => $link_item) {
+              foreach ($links as $key => $link_item) {
                 unset($element['top']['links'][$key]['#prefix']);
                 unset($element['top']['links'][$key]['#suffix']);
               }
@@ -592,7 +573,7 @@ class InlineParagraphsWidget extends WidgetBase {
 
         if (count($info)) {
           $show_info = FALSE;
-          foreach($info as $info_item) {
+          foreach ($info as $info_item) {
             if (!isset($info_item['#access']) || $info_item['#access']) {
               $show_info = TRUE;
               break;
@@ -607,7 +588,7 @@ class InlineParagraphsWidget extends WidgetBase {
 
         if (count($actions)) {
           $show_actions = FALSE;
-          foreach($actions as $action_item) {
+          foreach ($actions as $action_item) {
             if (!isset($action_item['#access']) || $action_item['#access']) {
               $show_actions = TRUE;
               break;
@@ -643,7 +624,8 @@ class InlineParagraphsWidget extends WidgetBase {
         $display->buildForm($paragraphs_entity, $element['subform'], $form_state);
         foreach (Element::children($element['subform']) as $field) {
           if ($paragraphs_entity->hasField($field)) {
-            $translatable = $paragraphs_entity->{$field}->getFieldDefinition()->isTranslatable();
+            $translatable = $paragraphs_entity->{$field}->getFieldDefinition()
+              ->isTranslatable();
             if ($translatable) {
               $element['subform'][$field]['widget']['#after_build'][] = [
                 static::class,
@@ -656,7 +638,8 @@ class InlineParagraphsWidget extends WidgetBase {
       elseif ($item_mode == 'preview') {
         $element['subform'] = array();
         $element['behavior_plugins'] = [];
-        $element['preview'] = entity_view($paragraphs_entity, 'preview', $paragraphs_entity->language()->getId());
+        $element['preview'] = entity_view($paragraphs_entity, 'preview', $paragraphs_entity->language()
+          ->getId());
         $element['preview']['#access'] = $paragraphs_entity->access('view');
       }
       elseif ($item_mode == 'closed') {
@@ -700,7 +683,8 @@ class InlineParagraphsWidget extends WidgetBase {
     $return_bundles = array();
 
     $target_type = $this->getFieldSetting('target_type');
-    $bundles = \Drupal::service('entity_type.bundle.info')->getBundleInfo($target_type);
+    $bundles = \Drupal::service('entity_type.bundle.info')
+      ->getBundleInfo($target_type);
 
     if ($this->getSelectionHandlerSetting('target_bundles') !== NULL) {
       $bundles = array_intersect_key($bundles, $this->getSelectionHandlerSetting('target_bundles'));
@@ -732,7 +716,8 @@ class InlineParagraphsWidget extends WidgetBase {
       $weight = 0;
       foreach ($bundles as $machine_name => $bundle) {
         if (!count($this->getSelectionHandlerSetting('target_bundles'))
-          || in_array($machine_name, $this->getSelectionHandlerSetting('target_bundles'))) {
+          || in_array($machine_name, $this->getSelectionHandlerSetting('target_bundles'))
+          ) {
 
           $return_bundles[$machine_name] = array(
             'label' => $bundle['label'],
@@ -751,7 +736,8 @@ class InlineParagraphsWidget extends WidgetBase {
 
   public function formMultipleElements(FieldItemListInterface $items, array &$form, FormStateInterface $form_state) {
     $field_name = $this->fieldDefinition->getName();
-    $cardinality = $this->fieldDefinition->getFieldStorageDefinition()->getCardinality();
+    $cardinality = $this->fieldDefinition->getFieldStorageDefinition()
+      ->getCardinality();
     $this->fieldParents = $form['#parents'];
     $field_state = static::getWidgetState($this->fieldParents, $field_name, $form_state);
 
@@ -766,9 +752,10 @@ class InlineParagraphsWidget extends WidgetBase {
       if ($default_type) {
         // Place the default paragraph.
         $target_type = $this->getFieldSetting('target_type');
-        $paragraphs_entity = $entity_type_manager->getStorage($target_type)->create([
-          'type' => $default_type,
-        ]);
+        $paragraphs_entity = $entity_type_manager->getStorage($target_type)
+          ->create([
+            'type' => $default_type,
+          ]);
         $field_state['selected_bundle'] = $default_type;
         $display = EntityFormDisplay::collectRenderDisplay($paragraphs_entity, $this->getSetting('form_display_mode'));
         $field_state['paragraphs'][0] = [
@@ -783,10 +770,12 @@ class InlineParagraphsWidget extends WidgetBase {
     }
 
     $this->realItemCount = $max;
-    $is_multiple = $this->fieldDefinition->getFieldStorageDefinition()->isMultiple();
+    $is_multiple = $this->fieldDefinition->getFieldStorageDefinition()
+      ->isMultiple();
 
     $title = $this->fieldDefinition->getLabel();
-    $description = FieldFilteredMarkup::create(\Drupal::token()->replace($this->fieldDefinition->getDescription()));
+    $description = FieldFilteredMarkup::create(\Drupal::token()
+      ->replace($this->fieldDefinition->getDescription()));
 
     $elements = array();
     $this->fieldIdPrefix = implode('-', array_merge($this->fieldParents, array($field_name)));
@@ -856,7 +845,7 @@ class InlineParagraphsWidget extends WidgetBase {
         '#required' => $this->fieldDefinition->isRequired(),
         '#title' => $title,
         '#description' => $description,
-        '#max_delta' => $max-1,
+        '#max_delta' => $max - 1,
       );
     }
     else {
@@ -866,7 +855,7 @@ class InlineParagraphsWidget extends WidgetBase {
         '#field_name' => $field_name,
         '#cardinality' => $cardinality,
         '#cardinality_multiple' => TRUE,
-        '#max_delta' => $max-1,
+        '#max_delta' => $max - 1,
         'title' => [
           '#type' => 'html_tag',
           '#tag' => 'strong',
@@ -894,7 +883,7 @@ class InlineParagraphsWidget extends WidgetBase {
     $host = $items->getEntity();
     $this->initIsTranslating($form_state, $host);
 
-    if (($this->realItemCount < $cardinality || $cardinality == FieldStorageDefinitionInterface::CARDINALITY_UNLIMITED) && !$form_state->isProgrammed() && !$this->isTranslating) {
+    if (($this->realItemCount < $cardinality || $cardinality == FieldStorageDefinitionInterface::CARDINALITY_UNLIMITED) && !$form_state->isProgrammed() && (!$this->isTranslating || $this->fieldDefinition->isTranslatable())) {
       $elements['add_more'] = $this->buildAddActions();
     }
 
@@ -913,7 +902,12 @@ class InlineParagraphsWidget extends WidgetBase {
     if (in_array('default_value_input', $parents, TRUE)) {
       // Since the entity is not reusable neither cloneable, having a default
       // value is not supported.
-      return ['#markup' => $this->t('No widget available for: %label.', ['%label' => $items->getFieldDefinition()->getLabel()])];
+      return [
+        '#markup' => $this->t('No widget available for: %label.', [
+          '%label' => $items->getFieldDefinition()
+            ->getLabel()
+        ])
+      ];
     }
 
     return parent::form($items, $form, $form_state, $get_delta);
@@ -942,7 +936,7 @@ class InlineParagraphsWidget extends WidgetBase {
         ];
       }
 
-      return $add_more_elements ;
+      return $add_more_elements;
     }
 
     if ($this->getSetting('add_mode') == 'button' || $this->getSetting('add_mode') == 'dropdown') {
@@ -971,7 +965,8 @@ class InlineParagraphsWidget extends WidgetBase {
 
     foreach ($bundles as $machine_name => $bundle) {
       if ($dragdrop_settings || (!count($this->getSelectionHandlerSetting('target_bundles'))
-          || in_array($machine_name, $this->getSelectionHandlerSetting('target_bundles')))) {
+          || in_array($machine_name, $this->getSelectionHandlerSetting('target_bundles')))
+      ) {
         if ($access_control_handler->createAccess($machine_name)) {
           $this->accessOptions[$machine_name] = $bundle['label'];
         }
@@ -1017,7 +1012,12 @@ class InlineParagraphsWidget extends WidgetBase {
         '#name' => strtr($this->fieldIdPrefix, '-', '_') . '_' . $machine_name . '_add_more',
         '#value' => $this->t('Add @type', ['@type' => $label]),
         '#attributes' => ['class' => ['field-add-more-submit']],
-        '#limit_validation_errors' => [array_merge($this->fieldParents, [$field_name, 'add_more'])],
+        '#limit_validation_errors' => [
+          array_merge($this->fieldParents, [
+              $field_name,
+              'add_more'
+            ])
+        ],
         '#submit' => [[get_class($this), 'addMoreSubmit']],
         '#ajax' => [
           'callback' => [get_class($this), 'addMoreAjax'],
@@ -1063,7 +1063,12 @@ class InlineParagraphsWidget extends WidgetBase {
       '#name' => strtr($this->fieldIdPrefix, '-', '_') . '_add_more',
       '#value' => $text,
       '#attributes' => ['class' => ['field-add-more-submit']],
-      '#limit_validation_errors' => [array_merge($this->fieldParents, [$field_name, 'add_more'])],
+      '#limit_validation_errors' => [
+        array_merge($this->fieldParents, [
+            $field_name,
+            'add_more'
+          ])
+      ],
       '#submit' => [[get_class($this), 'addMoreSubmit']],
       '#ajax' => [
         'callback' => [get_class($this), 'addMoreAjax'],
@@ -1088,7 +1093,9 @@ class InlineParagraphsWidget extends WidgetBase {
    * @return string
    */
   protected function getCurrentLangcode(FormStateInterface $form_state, FieldItemListInterface $items) {
-    return $form_state->get('langcode') ?: $items->getEntity()->language()->getId();
+    return $form_state->get('langcode') ?: $items->getEntity()
+      ->language()
+      ->getId();
   }
 
   /**
@@ -1201,7 +1208,8 @@ class InlineParagraphsWidget extends WidgetBase {
    */
   protected function isContentReferenced() {
     $target_type = $this->getFieldSetting('target_type');
-    $target_type_info = \Drupal::entityTypeManager()->getDefinition($target_type);
+    $target_type_info = \Drupal::entityTypeManager()
+      ->getDefinition($target_type);
     return $target_type_info->isSubclassOf('\Drupal\Core\Entity\ContentEntityInterface');
   }
 
@@ -1248,18 +1256,21 @@ class InlineParagraphsWidget extends WidgetBase {
       // Most entity types (at least nodes) however use a boolean property named
       // "revision" to indicate whether a new revision should be saved. Use that
       // property.
-      elseif ($entity->getEntityType()->hasKey('revision') && $form_state->getValue('revision')) {
+      elseif ($entity->getEntityType()
+          ->hasKey('revision') && $form_state->getValue('revision')
+      ) {
         $new_revision = TRUE;
       }
     }
 
     foreach ($values as $delta => &$item) {
       if (isset($widget_state['paragraphs'][$item['_original_delta']]['entity'])
-        && $widget_state['paragraphs'][$item['_original_delta']]['mode'] != 'remove') {
+        && $widget_state['paragraphs'][$item['_original_delta']]['mode'] != 'remove'
+      ) {
         $paragraphs_entity = $widget_state['paragraphs'][$item['_original_delta']]['entity'];
 
         /** @var \Drupal\Core\Entity\Display\EntityFormDisplayInterface $display */
-        $display =  $widget_state['paragraphs'][$item['_original_delta']]['display'];
+        $display = $widget_state['paragraphs'][$item['_original_delta']]['display'];
         if ($widget_state['paragraphs'][$item['_original_delta']]['mode'] == 'edit') {
           $display->extractFormValues($paragraphs_entity, $element[$item['_original_delta']]['subform'], $form_state);
         }
@@ -1285,7 +1296,7 @@ class InlineParagraphsWidget extends WidgetBase {
       }
       // If our mode is remove don't save or reference this entity.
       // @todo: Maybe we should actually delete it here?
-      elseif($widget_state['paragraphs'][$item['_original_delta']]['mode'] == 'remove' || $widget_state['paragraphs'][$item['_original_delta']]['mode'] == 'removed') {
+      elseif ($widget_state['paragraphs'][$item['_original_delta']]['mode'] == 'remove' || $widget_state['paragraphs'][$item['_original_delta']]['mode'] == 'removed') {
         $item['target_id'] = NULL;
         $item['target_revision_id'] = NULL;
       }
@@ -1303,6 +1314,81 @@ class InlineParagraphsWidget extends WidgetBase {
   }
 
   /**
+   * Prepares the paragraph entity for translation.
+   *
+   * @param \Drupal\paragraphs\Entity\Paragraph $entity
+   *   The paragraph entity.
+   * @param \Drupal\Core\Field\FieldItemListInterface $items
+   *   The field items list that hosts this paragraph.
+   * @param \Drupal\Core\Form\FormStateInterface $form_state
+   *   The form state.
+   *
+   * @return \Drupal\paragraphs\Entity\Paragraph
+   *   The prepared paragraph.
+   *
+   * @see \Drupal\Core\Entity\ContentEntityForm::initFormLangcodes().
+   */
+  protected function prepareEntity(Paragraph $entity, FieldItemListInterface $items, FormStateInterface $form_state) {
+    // Detect if we are translating.
+    $this->initIsTranslating($form_state, $items->getEntity());
+    $langcode = $form_state->get('langcode');
+    if (!$this->isTranslating) {
+      // Set the langcode if we are not translating.
+      $langcode_key = $entity->getEntityType()->getKey('langcode');
+      if ($entity->get($langcode_key)->value != $langcode) {
+        // If a translation in the given language already exists, switch to
+        // that. If there is none yet, update the language.
+        if ($entity->hasTranslation($langcode)) {
+          $entity = $entity->getTranslation($langcode);
+        }
+        else {
+          $entity->set($langcode_key, $langcode);
+        }
+      }
+    }
+    // Localised Paragraphs.
+    //  If the parent field is marked as translatable, assume paragraphs
+    //  to be localized (host entity expects different paragraphs for
+    //  different languages)
+    elseif ($items->getFieldDefinition()->isTranslatable()) {
+      if (!empty($form_state->get('content_translation'))) {
+        $entity = $this->cloneReferencedEntity($entity, $langcode);
+      }
+    }
+    // Translated Paragraphs
+    //  If the parent field is not translatable, assume the paragraph
+    //  entity itself (rather the fields within it) are marked as
+    //  translatable. (host entity expects same paragraphs in different
+    //  languages).
+    else {
+      // Add translation if missing for the target language.
+      if (!$entity->hasTranslation($langcode)) {
+        // Get the selected translation of the paragraph entity.
+        $entity_langcode = $entity->language()->getId();
+        $source = $form_state->get(['content_translation', 'source']);
+        $source_langcode = $source ? $source->getId() : $entity_langcode;
+        $entity = $entity->getTranslation($source_langcode);
+        // The paragraphs entity has no content translation source field if
+        // no paragraph entity field is translatable, even if the host is.
+        if ($entity->hasField('content_translation_source')) {
+          // Initialise the translation with source language values.
+          $entity->addTranslation($langcode, $entity->toArray());
+          $translation = $entity->getTranslation($langcode);
+          $manager = \Drupal::service('content_translation.manager');
+          $manager->getTranslationMetadata($translation)
+                  ->setSource($entity->language()->getId());
+        }
+      }
+      // If any paragraphs type is translatable do not switch.
+      if ($entity->hasField('content_translation_source')) {
+        // Switch the paragraph to the translation.
+        $entity = $entity->getTranslation($langcode);
+      }
+    }
+    return $entity;
+  }
+
+  /**
    * Initializes the translation form state.
    *
    * @param \Drupal\Core\Form\FormStateInterface $form_state
@@ -1328,7 +1414,9 @@ class InlineParagraphsWidget extends WidgetBase {
       // Adding a language through the ContentTranslationController.
       $this->isTranslating = TRUE;
     }
-    if ($host->hasTranslation($form_state->get('langcode')) && $host->getTranslation($form_state->get('langcode'))->get($default_langcode_key)->value == 0) {
+    if ($host->hasTranslation($form_state->get('langcode')) && $host->getTranslation($form_state->get('langcode'))
+        ->get($default_langcode_key)->value == 0
+    ) {
       // Editing a translation.
       $this->isTranslating = TRUE;
     }
@@ -1376,7 +1464,7 @@ class InlineParagraphsWidget extends WidgetBase {
    * @return string $default_paragraph_type
    *   Label name for default paragraph type.
    */
-  protected function getDefaultParagraphTypeLabelName(){
+  protected function getDefaultParagraphTypeLabelName() {
     if ($this->getDefaultParagraphTypeMachineName() !== NULL) {
       $allowed_types = $this->getAllowedTypes();
       return $allowed_types[$this->getDefaultParagraphTypeMachineName()]['label'];
@@ -1456,5 +1544,60 @@ class InlineParagraphsWidget extends WidgetBase {
     $collapsed_summary_text = implode(', ', $summary);
     return strip_tags($collapsed_summary_text);
   }
+  
+  /**
+   * Clones Paragraphs (and field_collections) recursively, preparing them to be
+   * passed to the translated paragraph widget.
+   *
+   * @param \Drupal\Core\Entity\ContentEntityInterface $entity_to_clone The Entity
+   * to clone
+   * @param string $langcode language code for all the clone entities created.
+   * @return \Drupal\Core\Entity\ContentEntityInterface New entity object which
+   * has the same data as the original $entity_to_clone, Note this entity is not
+   * saved.
+   */
+  protected function cloneReferencedEntity(ContentEntityInterface $entity_to_clone, $langcode) {
+    $entity_manager = \Drupal::entityTypeManager();
+    // Get the paragraph item as an array of values.
+    $paragraph_array = $entity_to_clone->toArray();
+    $target_type = $entity_to_clone->getEntityTypeId();
+    $entity_type = $entity_manager->getDefinition($target_type);
+    $bundle_key = $entity_type->getKey('bundle');
+    // Create a new entity for this language.
+    $new_entity = array(
+      $bundle_key => $entity_to_clone->bundle(),
+      'langcode' => $langcode
+    );
+    // Loop through all fields in the paragraph and add to new entity.
+    foreach ($entity_to_clone->getFieldDefinitions() as $field_name => $field_definition) {
+      // Check that the value is a field config and not empty.
+      if ($field_definition instanceof FieldConfig && !empty($paragraph_array[$field_name])) {
+        if ($this->checkEntityTypeCloneable($field_definition->getSetting('target_type'))) {
+          /** @var [EntityInterface] $entities */
+          $entities = $entity_to_clone->get($field_name)->referencedEntities();
+          $cloned_entites = [];
+          foreach ($entities as $entity) {
+            $cloned_entites[] = $this->cloneReferencedEntity($entity, $langcode);
+          }
+          $new_entity[$field_name] = $cloned_entites;
+        }
+        else {
+          $new_entity[$field_name] = $paragraph_array[$field_name];
+        }
+      }
+    }
+    return $entity_manager->getStorage($target_type)->create($new_entity);
+  }
+  /**
+   * Checks whether we support cloning a certain entity type or not.
+   *
+   * @param string $entity_type_id the entity type ID to check whether it's cloneable
+   * @return bool
+   */
+  protected function checkEntityTypeCloneable($entity_type_id) {
+    // @todo: maybe this list should be moved to widget configs with some sensible
+    // default?
+    return in_array($entity_type_id, ['field_collection_item', 'paragraph']);
+  }
 
 }