Issue #3446845 by strykaizer: Support views default display

modules/facets_exposed_filters/src/Plugin/search_api/display/ViewsDefault.php

+<?php
+
+namespace Drupal\facets_exposed_filters\Plugin\search_api\display;
+
+use Drupal\search_api\Plugin\search_api\display\ViewsDisplayBase;
+
+/**
+ * Represents a Views default display.
+ *
+ * @SearchApiDisplay(
+ *   id = "views_default",
+ *   views_display_type = "default",
+ *   deriver = "Drupal\search_api\Plugin\search_api\display\ViewsDisplayDeriver"
+ * )
+ */
+class ViewsDefault extends ViewsDisplayBase {}

src/FacetListBuilder.php

@@ -359,6 +359,13 @@ class FacetListBuilder extends DraggableListBuilder {
 
     $facet_source_groups = [];
     foreach ($facet_sources as $facet_source) {
+
+      // For now, we hide the facet sources for views display default.
+      // They should not be used to attach block facets.
+      if(substr($facet_source["display_id"], 0, 14) == 'views_default:') {
+        continue;
+      }
+
       $facet_source_groups[$facet_source['id']] = [
         'facet_source' => $facet_source,
         'facets' => [],

src/Form/FacetSettingsForm.php

@@ -113,6 +113,11 @@ class FacetSettingsForm extends EntityForm {
 
     $facet_sources = [];
     foreach ($this->facetSourcePluginManager->getDefinitions() as $facet_source_id => $definition) {
+      // For now, we hide the facet sources for views display default.
+      // They should not be used to attach block facets.
+      if(substr($definition["display_id"], 0, 14) == 'views_default:') {
+        continue;
+      }
       $facet_sources[$definition['id']] = !empty($definition['label']) ? $definition['label'] : $facet_source_id;
     }