Add 'Add ' string/text to entity reference add button

config/optional/core.entity_form_display.paragraph.text_boxes.default.yml

@@ -116,6 +116,7 @@ content:
       add_mode: dropdown
       form_display_mode: default
       default_paragraph_type: ''
+      add_text_needed: '1'
     third_party_settings: {  }
     region: content
   parade_text:

parade.install

@@ -188,3 +188,13 @@ function parade_update_8203() {
     }
   }
 }
+
+/**
+ * Add new option (add_text_needed) default value.
+ */
+function parade_update_8204() {
+  $config_factory = \Drupal::configFactory();
+  $config_factory->getEditable('core.entity_form_display.paragraph.text_boxes.default')
+    ->set('content.parade_paragraphs.settings.add_text_needed', '1')
+    ->save();
+}

src/Plugin/Field/FieldWidget/InlineParagraphsPreviewerWidget.php

@@ -11,7 +11,7 @@
 use Drupal\Core\Entity\ContentEntityBase;
 use Drupal\Core\Ajax\OpenModalDialogCommand;
 use Drupal\Core\Field\FieldItemListInterface;
-use Drupal\paragraphs\Plugin\Field\FieldWidget\InlineParagraphsWidget;
+use Drupal\parade\Plugin\Field\FieldWidget\InlineParagraphsWidget;
 
 /**
  * Plugin implementation of the 'Paragraphs with preview' widget.
@@ -158,8 +158,11 @@ public function formMultipleElements(FieldItemListInterface $items, array &$form
    */
   protected function buildButtonsAddMode() {
     $add_more_elements = parent::buildButtonsAddMode();
-    foreach ($this->getAccessibleOptions() as $machine_name => $label) {
-      $add_more_elements['add_more_button_' . $machine_name]['#value'] = $label;
+    // Do not run this, if we need the 'Add ' string.
+    if (!$this->getSetting('add_text_needed')) {
+      foreach ($this->getAccessibleOptions() as $machine_name => $label) {
+        $add_more_elements['add_more_button_' . $machine_name]['#value'] = $label;
+      }
     }
     $add_more_elements['#theme_wrappers'] = ['parade__paragraphs_dropbutton_wrapper'];
     $add_more_elements['#label'] = [

src/Plugin/Field/FieldWidget/InlineParagraphsWidget.php

@@ -0,0 +1,64 @@
+<?php
+
+namespace Drupal\parade\Plugin\Field\FieldWidget;
+
+use Drupal\Core\Form\FormStateInterface;
+
+/**
+ * Plugin implementation of the 'entity_reference parade' widget.
+ *
+ * We hide add / remove buttons when translating to avoid accidental loss of
+ * data because these actions effect all languages.
+ *
+ * @FieldWidget(
+ *   id = "entity_reference_parade",
+ *   label = @Translation("Parade Classic"),
+ *   description = @Translation("A parade inline form widget."),
+ *   field_types = {
+ *     "entity_reference_revisions"
+ *   }
+ * )
+ */
+class InlineParagraphsWidget extends \Drupal\paragraphs\Plugin\Field\FieldWidget\InlineParagraphsWidget {
+
+  /**
+   * {@inheritdoc}
+   */
+  public static function defaultSettings() {
+    $settings = parent::defaultSettings();
+
+    // New values.
+    $settings['add_text_needed'] = FALSE;
+
+    return $settings;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function settingsForm(array $form, FormStateInterface $form_state) {
+    $elements = parent::settingsForm($form, $form_state);
+
+    // New values.
+    $elements['add_text_needed'] = array(
+      '#type' => 'checkbox',
+      '#title' => $this->t("Add 'Add ' text before title on entity add buttons."),
+      '#default_value' => $this->getSetting('add_text_needed'),
+      '#weight' => 2,
+    );
+
+    return $elements;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function settingsSummary() {
+    $summary = parent::settingsSummary();
+
+    // New values.
+    $summary[] = $this->t("'Add ' text will be added before title?: @answer", ['@answer' => $this->getSetting('add_text_needed') ? 'Yes' : 'No']);
+
+    return $summary;
+  }
+}