LibWeb: Implement fire a push/replace/reload navigate event

Userland/Libraries/LibWeb/HTML/Navigation.cpp

@@ -1252,4 +1252,46 @@ bool Navigation::fire_a_traverse_navigate_event(JS::NonnullGCPtr<SessionHistoryE
     return inner_navigate_event_firing_algorithm(Bindings::NavigationType::Traverse, destination, user_involvement, {}, {}, {});
 }
 
+// https://html.spec.whatwg.org/multipage/nav-history-apis.html#fire-a-push/replace/reload-navigate-event
+bool Navigation::fire_a_push_replace_reload_navigate_event(
+    Bindings::NavigationType navigation_type,
+    AK::URL destination_url,
+    bool is_same_document,
+    UserNavigationInvolvement user_involvement,
+    Optional<Vector<XHR::FormDataEntry>&> form_data_entry_list,
+    Optional<SerializationRecord> navigation_api_state,
+    Optional<SerializationRecord> classic_history_api_state)
+{
+    auto& realm = relevant_realm(*this);
+    auto& vm = this->vm();
+
+    // This fulfills the entry requirement: an optional serialized state navigationAPIState (default StructuredSerializeForStorage(null))
+    if (!navigation_api_state.has_value())
+        navigation_api_state = MUST(structured_serialize_for_storage(vm, JS::js_null()));
+
+    // 1. Let event be the result of creating an event given NavigateEvent, in navigation's relevant realm.
+    // 2. Set event's classic history API state to classicHistoryAPIState.
+    // AD-HOC: These are handled in the inner algorithm
+
+    // 3. Let destination be a new NavigationDestination created in navigation's relevant realm.
+    auto destination = NavigationDestination::create(realm);
+
+    // 4. Set destination's URL to destinationURL.
+    destination->set_url(destination_url);
+
+    // 5. Set destination's entry to null.
+    destination->set_entry(nullptr);
+
+    // 6. Set destination's state to navigationAPIState.
+    destination->set_state(*navigation_api_state);
+
+    // 7. Set destination's is same document to isSameDocument.
+    destination->set_is_same_document(is_same_document);
+
+    // 8. Return the result of performing the inner navigate event firing algorithm given navigation,
+    //    navigationType, event, destination, userInvolvement, formDataEntryList, and null.
+    // AD-HOC: We don't pass the event, but we do pass the classic_history_api state at the end to be set later
+    return inner_navigate_event_firing_algorithm(navigation_type, destination, user_involvement, move(form_data_entry_list), {}, move(classic_history_api_state));
+}
+
 }

Userland/Libraries/LibWeb/HTML/Navigation.h

@@ -110,6 +110,14 @@ public:
     i64 get_the_navigation_api_entry_index(SessionHistoryEntry const&) const;
     void abort_the_ongoing_navigation(Optional<JS::NonnullGCPtr<WebIDL::DOMException>> error = {});
     bool fire_a_traverse_navigate_event(JS::NonnullGCPtr<SessionHistoryEntry> destination_she, UserNavigationInvolvement = UserNavigationInvolvement::None);
+    bool fire_a_push_replace_reload_navigate_event(
+        Bindings::NavigationType,
+        AK::URL destination_url,
+        bool is_same_document,
+        UserNavigationInvolvement = UserNavigationInvolvement::None,
+        Optional<Vector<XHR::FormDataEntry>&> form_data_entry_list = {},
+        Optional<SerializationRecord> navigation_api_state = {},
+        Optional<SerializationRecord> classic_history_api_state = {});
 
     virtual ~Navigation() override;