Removed getRegions() from LayoutParagraphsSection. Since sections do not have...

Removed getRegions() from LayoutParagraphsSection. Since sections do not have awareness of Layout Plugins and since components store the region they are associated with, sections have no real way of retrieving a complete list of regions. That functionality should be moved into the LayoutParagraphsService with the injected Layout Plugin Manager service.

src/LayoutParagraphsSection.php

@@ -35,17 +35,6 @@ class LayoutParagraphsSection extends LayoutParagraphsComponent implements Layou
     return $settings['layout'];
   }
 
-  /**
-   * Get the regions associated with this layout paragraph.
-   *
-   * @return array
-   *   An array of region names.
-   */
-  public function getRegions() {
-    $settings = $this->getSettings();
-    return array_keys($settings['regions']);
-  }
-
   /**
    * Returns the layout plugin settings for the provided paragraph.
    *

src/LayoutParagraphsService.php

@@ -59,19 +59,19 @@ class LayoutParagraphsService {
     $section = new LayoutParagraphsSection($paragraph);
     $view_builder = $this->entityTypeManager->getViewBuilder('paragraph');
 
+    $layout = $this
+      ->layoutPluginManager
+      ->createInstance($section->getLayoutId(), $section->getLayoutConfiguration());
+
     // Map rendered paragraphs into their respective regions.
-    foreach ($section->getRegions() as $region) {
+    $regions = $layout->getPluginDefinition()->getRegions();
+    foreach (array_keys($regions) as $region) {
       $regions[$region] = array_map(function ($component) use ($view_builder, $view_mode) {
         return $view_builder->view($component->getEntity(), $view_mode);
       }, $section->getComponentsForRegion($region));
     }
 
-    // Build the layout render array using the appropriate layout plugin.
-    $layout_plugin_instance = $this
-      ->layoutPluginManager
-      ->createInstance($section->getLayoutId(), $section->getLayoutConfiguration());
-
-    return $layout_plugin_instance->build($regions);
+    return $layout->build($regions);
   }
 
 }