MDL-81648 navigation: Add delegated section logic to section nodes

Author: roland04

lib/navigationlib.php

@@ -2295,10 +2295,20 @@ public function load_generic_course_sections(stdClass $course, navigation_node $
                     continue;
                 }
 
+                $parentnode = $coursenode;
+
+                // Set the parent node to the parent section if this is a delegated section.
+                if ($section->is_delegated()) {
+                    $parentsection = $section->get_component_instance()->get_parent_section();
+                    if ($parentsection) {
+                        $parentnode = $coursenode->find($parentsection->id, self::TYPE_SECTION) ?: $coursenode;
+                    }
+                }
+
                 $sectionname = get_section_name($course, $section);
                 $url = course_get_url($course, $section->section, array('navigation' => true));
 
-                $sectionnode = $coursenode->add($sectionname, $url, navigation_node::TYPE_SECTION,
+                $sectionnode = $parentnode->add($sectionname, $url, navigation_node::TYPE_SECTION,
                     null, $section->id, new pix_icon('i/section', ''));
                 $sectionnode->nodetype = navigation_node::NODETYPE_BRANCH;
                 $sectionnode->hidden = (!$section->visible || !$section->available);

theme/boost/classes/boostnavbar.php

@@ -68,6 +68,7 @@ protected function prepare_nodes_for_boost(): void {
             }
         }
         if ($this->page->context->contextlevel == CONTEXT_COURSE) {
+            $removesections = course_get_format($this->page->course)->can_sections_be_removed_from_navigation();
             // Remove any duplicate navbar nodes.
             $this->remove_duplicate_items();
             // Remove 'My courses' and 'Courses' if we are in the course context.