Update 5 files

• /src/Plugin/views/ColumnSelectorTrait.php
• /src/Plugin/views/field/ViewsCsvField.php
• /src/Plugin/views/sort/ViewsCsvSort.php
• /src/Plugin/views/filter/ViewsCsvFilter.php
• /src/Plugin/views/argument/ViewsCsvArgument.php

Closes #3452355

src/Plugin/views/argument/ViewsCsvArgument.php

@@ -4,6 +4,7 @@ namespace Drupal\views_csv_source\Plugin\views\argument;
 
 use Drupal\Core\Form\FormStateInterface;
 use Drupal\views\Plugin\views\argument\ArgumentPluginBase;
+use Drupal\views_csv_source\Plugin\views\ColumnSelectorTrait;
 
 /**
  * Base argument handler for views_csv_source.
@@ -14,6 +15,8 @@ use Drupal\views\Plugin\views\argument\ArgumentPluginBase;
  */
 class ViewsCsvArgument extends ArgumentPluginBase {
 
+  use ColumnSelectorTrait;
+
   /**
    * Add this filter to the query.
    */
@@ -45,13 +48,7 @@ class ViewsCsvArgument extends ArgumentPluginBase {
    * {@inheritdoc}
    */
   public function buildOptionsForm(&$form, FormStateInterface $form_state) {
-    $form['key'] = [
-      '#title' => $this->t('Column Selector'),
-      '#description' => $this->t('Choose a key'),
-      '#type' => 'textfield',
-      '#default_value' => $this->options['key'],
-      '#required' => TRUE,
-    ];
+    $form = $this->buildKeyOptionElement($form);
   }
 
 }