Fix: add possibility to select a webform

modules/dashboards_webform/src/Plugin/Dashboard/Submissions.php

@@ -4,6 +4,7 @@ namespace Drupal\dashboards_webform\Plugin\Dashboard;
 
 use Drupal\Core\Cache\CacheBackendInterface;
 use Drupal\Core\Database\Connection;
+use Drupal\Core\Entity\EntityTypeManagerInterface;
 use Drupal\Core\Form\FormStateInterface;
 use Drupal\dashboards\Plugin\DashboardBase;
 use Drupal\dashboards\Plugin\Dashboard\ChartTrait;
@@ -28,12 +29,20 @@ class Submissions extends DashboardBase {
    */
   protected $database;
 
+  /**
+   * EntityTypeManagerInterface definition.
+   *
+   * @var \Drupal\Core\Entity\EntityTypeManagerInterface
+   */
+  protected $entityTypeManager;
+
   /**
    * {@inheritdoc}
    */
-  public function __construct(array $configuration, $plugin_id, $plugin_definition, CacheBackendInterface $cache_backend, Connection $database) {
+  public function __construct(array $configuration, $plugin_id, $plugin_definition, CacheBackendInterface $cache_backend, Connection $database, EntityTypeManagerInterface $entity_type_manager) {
     parent::__construct($configuration, $plugin_id, $plugin_definition, $cache_backend);
     $this->database = $database;
+    $this->entityTypeManager = $entity_type_manager;
   }
 
   /**
@@ -45,7 +54,8 @@ class Submissions extends DashboardBase {
       $plugin_id,
       $plugin_definition,
       $container->get('dashboards.cache'),
-      $container->get('database')
+      $container->get('database'),
+      $container->get('entity_type.manager')
     );
   }
 
@@ -53,6 +63,13 @@ class Submissions extends DashboardBase {
    * {@inheritdoc}
    */
   public function buildSettingsForm(array $form, FormStateInterface $form_state, array $configuration): array {
+    $webform = $this->entityTypeManager->getStorage('webform')->load($configuration['webform']);
+    $form['webform'] = [
+      '#type' => 'entity_autocomplete',
+      '#target_type' => 'webform',
+      '#selection_handler' => 'default',
+      '#default_value' => ($webform) ? $webform : 'null',
+    ];
     $form['period'] = [
       '#type' => 'select',
       '#options' => [
@@ -88,6 +105,7 @@ class Submissions extends DashboardBase {
    * {@inheritdoc}
    */
   public function buildRenderArray($configuration): array {
+    dsm($configuration);
     $field = $configuration['period'];
     $cid = md5(serialize([
       $configuration['period'],
@@ -99,6 +117,9 @@ class Submissions extends DashboardBase {
     $cache = FALSE;
     if (!$cache) {
       $query = $this->database->select('webform_submission', 'ws');
+      if (isset($configuration['webform'])) {
+        $query->condition('webform_id', $configuration['webform']);
+      }
       switch ($configuration['date']) {
         case 'yesterday':
           $query->condition('ws.created', [strtotime('yesterday'), strtotime('today')], 'BETWEEN');