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LibWeb: Implement creation of fresh top-level traversables
Co-authored-by: Andreas Kling <kling@serenityos.org>
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@ -4,6 +4,10 @@
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <LibWeb/Bindings/MainThreadVM.h>
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#include <LibWeb/DOM/Document.h>
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#include <LibWeb/HTML/BrowsingContextGroup.h>
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#include <LibWeb/HTML/DocumentState.h>
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#include <LibWeb/HTML/SessionHistoryEntry.h>
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#include <LibWeb/HTML/TraversableNavigable.h>
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@ -20,6 +24,92 @@ void TraversableNavigable::visit_edges(Cell::Visitor& visitor)
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visitor.visit(entry);
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}
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static OrderedHashTable<TraversableNavigable*>& user_agent_top_level_traversable_set()
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{
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static OrderedHashTable<TraversableNavigable*> set;
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return set;
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}
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struct BrowsingContextAndDocument {
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JS::NonnullGCPtr<HTML::BrowsingContext> browsing_context;
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JS::NonnullGCPtr<DOM::Document> document;
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};
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// https://html.spec.whatwg.org/multipage/document-sequences.html#creating-a-new-top-level-browsing-context
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static WebIDL::ExceptionOr<BrowsingContextAndDocument> create_a_new_top_level_browsing_context_and_document(Page& page)
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{
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// 1. Let group and document be the result of creating a new browsing context group and document.
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auto [group, document] = TRY(BrowsingContextGroup::create_a_new_browsing_context_group_and_document(page));
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// 2. Return group's browsing context set[0] and document.
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return BrowsingContextAndDocument { **group->browsing_context_set().begin(), document };
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}
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// https://html.spec.whatwg.org/multipage/document-sequences.html#creating-a-new-top-level-traversable
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WebIDL::ExceptionOr<JS::NonnullGCPtr<TraversableNavigable>> TraversableNavigable::create_a_new_top_level_traversable(Page& page, JS::GCPtr<HTML::BrowsingContext> opener, String target_name)
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{
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auto& vm = Bindings::main_thread_vm();
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// 1. Let document be null.
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JS::GCPtr<DOM::Document> document = nullptr;
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// 2. If opener is null, then set document to the second return value of creating a new top-level browsing context and document.
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if (!opener) {
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document = TRY(create_a_new_top_level_browsing_context_and_document(page)).document;
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}
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// 3. Otherwise, set document to the second return value of creating a new auxiliary browsing context and document given opener.
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else {
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document = TRY(BrowsingContext::create_a_new_auxiliary_browsing_context_and_document(page, *opener)).document;
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}
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// 4. Let documentState be a new document state, with
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auto document_state = vm.heap().allocate_without_realm<DocumentState>();
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// document: document
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document_state->set_document(document);
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// navigable target name: targetName
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document_state->set_navigable_target_name(target_name);
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// 5. Let traversable be a new traversable navigable.
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auto traversable = vm.heap().allocate_without_realm<TraversableNavigable>();
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// 6. Initialize the navigable traversable given documentState.
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TRY_OR_THROW_OOM(vm, traversable->initialize_navigable(document_state, nullptr));
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// 7. Let initialHistoryEntry be traversable's active session history entry.
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auto initial_history_entry = traversable->active_session_history_entry();
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VERIFY(initial_history_entry);
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// 8. Set initialHistoryEntry's step to 0.
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initial_history_entry->step = 0;
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// 9. Append initialHistoryEntry to traversable's session history entries.
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traversable->m_session_history_entries.append(*initial_history_entry);
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// FIXME: 10. If opener is non-null, then legacy-clone a traversable storage shed given opener's top-level traversable and traversable. [STORAGE]
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// 11. Append traversable to the user agent's top-level traversable set.
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user_agent_top_level_traversable_set().set(traversable);
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// 12. Return traversable.
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return traversable;
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}
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// https://html.spec.whatwg.org/multipage/document-sequences.html#create-a-fresh-top-level-traversable
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WebIDL::ExceptionOr<JS::NonnullGCPtr<TraversableNavigable>> TraversableNavigable::create_a_fresh_top_level_traversable(Page& page, AK::URL const& initial_navigation_url, Variant<Empty, String, POSTResource> initial_navigation_post_resource)
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{
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// 1. Let traversable be the result of creating a new top-level traversable given null and the empty string.
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auto traversable = TRY(create_a_new_top_level_traversable(page, nullptr, {}));
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// 2. Navigate traversable to initialNavigationURL using traversable's active document, with documentResource set to initialNavigationPostResource.
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TRY(traversable->navigate(initial_navigation_url, *traversable->active_document(), initial_navigation_post_resource));
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// 3. Return traversable.
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return traversable;
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}
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// https://html.spec.whatwg.org/multipage/document-sequences.html#top-level-traversable
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bool TraversableNavigable::is_top_level_traversable() const
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{
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