LibWeb/HTML: Inform navigation API about frame container destruction

Author: https://github.com/shannonbooth
Commit: 6032827fe7
Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/4487
Reviewed-by: https://github.com/trflynn89

Libraries/LibWeb/HTML/Navigable.cpp

@@ -2345,6 +2345,19 @@ bool Navigable::has_a_rendering_opportunity() const
     return browsing_context->page().client().is_ready_to_paint();
 }
 
+// https://html.spec.whatwg.org/multipage/nav-history-apis.html#inform-the-navigation-api-about-child-navigable-destruction
+void Navigable::inform_the_navigation_api_about_child_navigable_destruction()
+{
+    // 1. Inform the navigation API about aborting navigation in navigable.
+    inform_the_navigation_api_about_aborting_navigation();
+
+    // FIXME: 2. Let navigation be navigable's active window's navigation API.
+
+    // FIXME: 3. Let traversalAPIMethodTrackers be a clone of navigation's upcoming traverse API method trackers.
+
+    // FIXME: 4. For each apiMethodTracker of traversalAPIMethodTrackers: reject the finished promise for apiMethodTracker with a new "AbortError" DOMException created in navigation's relevant realm.
+}
+
 // https://html.spec.whatwg.org/multipage/nav-history-apis.html#inform-the-navigation-api-about-aborting-navigation
 void Navigable::inform_the_navigation_api_about_aborting_navigation()
 {

Libraries/LibWeb/HTML/Navigable.h

@@ -186,6 +186,8 @@ public:
     bool has_session_history_entry_and_ready_for_navigation() const { return m_has_session_history_entry_and_ready_for_navigation; }
     void set_has_session_history_entry_and_ready_for_navigation();
 
+    void inform_the_navigation_api_about_child_navigable_destruction();
+
     bool has_pending_navigations() const { return !m_pending_navigations.is_empty(); }
 
     template<typename T>

Libraries/LibWeb/HTML/NavigableContainer.cpp

@@ -285,7 +285,8 @@ void NavigableContainer::destroy_the_child_navigable()
         return;
     navigable->set_has_been_destroyed();
 
-    // FIXME: 4. Inform the navigation API about child navigable destruction given navigable.
+    // 4. Inform the navigation API about child navigable destruction given navigable.
+    navigable->inform_the_navigation_api_about_child_navigable_destruction();
 
     // 5. Destroy a document and its descendants given navigable's active document.
     navigable->active_document()->destroy_a_document_and_its_descendants(GC::create_function(heap(), [this, navigable] {