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LibWeb: Implement Document/BrowsingContext hookup according to spec

We now implement the browsing context's "set active document" algorithm
from the spec, as well as the "discard" algorithm for browsing contexts
and documents.
This commit is contained in:
Andreas Kling 2022-09-20 21:44:42 +02:00
parent ab8432783e
commit 92deba7197
9 changed files with 189 additions and 70 deletions

View file

@ -651,20 +651,6 @@ void Document::set_title(String const& title)
}
}
void Document::attach_to_browsing_context(Badge<HTML::BrowsingContext>, HTML::BrowsingContext& browsing_context)
{
m_browsing_context = browsing_context;
update_the_visibility_state(browsing_context.system_visibility_state());
}
void Document::detach_from_browsing_context(Badge<HTML::BrowsingContext>, HTML::BrowsingContext& browsing_context)
{
VERIFY(&browsing_context == m_browsing_context);
tear_down_layout_tree();
m_browsing_context = nullptr;
}
void Document::tear_down_layout_tree()
{
if (!m_layout_root)
@ -1605,6 +1591,11 @@ String Document::visibility_state() const
VERIFY_NOT_REACHED();
}
void Document::set_visibility_state(Badge<HTML::BrowsingContext>, HTML::VisibilityState visibility_state)
{
m_visibility_state = visibility_state;
}
// https://html.spec.whatwg.org/multipage/interaction.html#update-the-visibility-state
void Document::update_the_visibility_state(HTML::VisibilityState visibility_state)
{
@ -2021,4 +2012,100 @@ Vector<NonnullRefPtr<HTML::BrowsingContext>> Document::list_of_descendant_browsi
return list;
}
// https://html.spec.whatwg.org/multipage/window-object.html#discard-a-document
void Document::discard()
{
// 1. Set document's salvageable state to false.
m_salvageable = false;
// FIXME: 2. Run any unloading document cleanup steps for document that are defined by this specification and other applicable specifications.
// 3. Abort document.
abort();
// 4. Remove any tasks associated with document in any task source, without running those tasks.
HTML::main_thread_event_loop().task_queue().remove_tasks_matching([this](auto& task) {
return task.document() == this;
});
// 5. Discard all the child browsing contexts of document.
if (browsing_context()) {
browsing_context()->for_each_child([](HTML::BrowsingContext& child_browsing_context) {
child_browsing_context.discard();
});
}
// FIXME: 6. For each session history entry entry whose document is equal to document, set entry's document to null.
// 7. Set document's browsing context to null.
tear_down_layout_tree();
m_browsing_context = nullptr;
// FIXME: 8. Remove document from the owner set of each WorkerGlobalScope object whose set contains document.
// FIXME: 9. For each workletGlobalScope in document's worklet global scopes, terminate workletGlobalScope.
}
// https://html.spec.whatwg.org/multipage/browsing-the-web.html#abort-a-document
void Document::abort()
{
// 1. Abort the active documents of every child browsing context.
// If this results in any of those Document objects having their salvageable state set to false,
// then set document's salvageable state to false also.
if (browsing_context()) {
browsing_context()->for_each_child([this](HTML::BrowsingContext& child_browsing_context) {
if (auto* child_document = child_browsing_context.active_document()) {
child_document->abort();
if (!child_document->m_salvageable)
m_salvageable = false;
}
});
}
// FIXME: 2. Cancel any instances of the fetch algorithm in the context of document,
// discarding any tasks queued for them, and discarding any further data received from the network for them.
// If this resulted in any instances of the fetch algorithm being canceled
// or any queued tasks or any network data getting discarded,
// then set document's salvageable state to false.
// 3. If document's navigation id is non-null, then:
if (m_navigation_id.has_value()) {
// 1. FIXME: Invoke WebDriver BiDi navigation aborted with document's browsing context,
// and new WebDriver BiDi navigation status whose whose id is document's navigation id,
// status is "canceled", and url is document's URL.
// 2. Set document's navigation id to null.
m_navigation_id = {};
}
// 4. If document has an active parser, then:
if (auto parser = active_parser()) {
// 1. Set document's active parser was aborted to true.
m_active_parser_was_aborted = true;
// 2. Abort that parser.
parser->abort();
// 3. Set document's salvageable state to false.
m_salvageable = false;
}
}
// https://html.spec.whatwg.org/multipage/dom.html#active-parser
RefPtr<HTML::HTMLParser> Document::active_parser()
{
if (!m_parser)
return nullptr;
if (m_parser->aborted() || m_parser->stopped())
return nullptr;
return m_parser;
}
void Document::set_browsing_context(HTML::BrowsingContext* browsing_context)
{
m_browsing_context = browsing_context;
}
}

View file

@ -135,12 +135,11 @@ public:
String title() const;
void set_title(String const&);
void attach_to_browsing_context(Badge<HTML::BrowsingContext>, HTML::BrowsingContext&);
void detach_from_browsing_context(Badge<HTML::BrowsingContext>, HTML::BrowsingContext&);
HTML::BrowsingContext* browsing_context() { return m_browsing_context.ptr(); }
HTML::BrowsingContext const* browsing_context() const { return m_browsing_context.ptr(); }
void set_browsing_context(HTML::BrowsingContext*);
Page* page();
Page const* page() const;
@ -322,6 +321,9 @@ public:
// https://html.spec.whatwg.org/multipage/interaction.html#update-the-visibility-state
void update_the_visibility_state(HTML::VisibilityState);
// NOTE: This does not fire any events, unlike update_the_visibility_state().
void set_visibility_state(Badge<HTML::BrowsingContext>, HTML::VisibilityState);
void run_the_resize_steps();
void run_the_scroll_steps();
@ -386,6 +388,15 @@ public:
// https://html.spec.whatwg.org/multipage/browsers.html#list-of-the-descendant-browsing-contexts
Vector<NonnullRefPtr<HTML::BrowsingContext>> list_of_descendant_browsing_contexts() const;
// https://html.spec.whatwg.org/multipage/window-object.html#discard-a-document
void discard();
// https://html.spec.whatwg.org/multipage/browsing-the-web.html#abort-a-document
void abort();
// https://html.spec.whatwg.org/multipage/dom.html#active-parser
RefPtr<HTML::HTMLParser> active_parser();
protected:
virtual void visit_edges(Cell::Visitor&) override;
@ -476,6 +487,9 @@ private:
size_t m_number_of_things_delaying_the_load_event { 0 };
// https://html.spec.whatwg.org/multipage/browsing-the-web.html#concept-document-salvageable
bool m_salvageable { true };
// https://html.spec.whatwg.org/#page-showing
bool m_page_showing { false };