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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

@ -207,7 +207,7 @@ NonnullRefPtr<BrowsingContext> BrowsingContext::create_a_new_browsing_context(Pa
document->append_child(html_node);
// 19. Set the active document of browsingContext to document.
browsing_context->m_active_document = JS::make_handle(*document);
browsing_context->set_active_document(*document);
// 20. If browsingContext's creator URL is non-null, then set document's referrer to the serialization of it.
if (browsing_context->m_creator_url.has_value()) {
@ -227,9 +227,6 @@ NonnullRefPtr<BrowsingContext> BrowsingContext::create_a_new_browsing_context(Pa
.original_source_browsing_context = {},
});
// Non-standard:
document->attach_to_browsing_context({}, browsing_context);
// 23. Completely finish loading document.
document->completely_finish_loading();
@ -286,36 +283,29 @@ bool BrowsingContext::is_focused_context() const
return m_page && &m_page->focused_context() == this;
}
void BrowsingContext::set_active_document(DOM::Document* document)
// https://html.spec.whatwg.org/multipage/browsers.html#set-the-active-document
void BrowsingContext::set_active_document(JS::NonnullGCPtr<DOM::Document> document)
{
if (m_active_document.ptr() == document)
return;
// 1. Let window be document's relevant global object.
auto& window = verify_cast<HTML::Window>(relevant_global_object(document));
m_cursor_position = {};
// 2. Set document's visibility state to browsingContext's top-level browsing context's system visibility state.
document->set_visibility_state({}, top_level_browsing_context().system_visibility_state());
if (m_active_document)
m_active_document->detach_from_browsing_context({}, *this);
// 3. Set browsingContext's active window to window.
m_active_window = window;
// https://html.spec.whatwg.org/multipage/browsing-the-web.html#resetBCName
// FIXME: The rest of set_active_document does not follow the spec very closely, this just implements the
// relevant steps for resetting the browsing context name and should be updated closer to the spec once
// the other parts of history handling/navigating are implemented
// 3. If newDocument's origin is not same origin with the current entry's document's origin, then:
if (!document || !m_active_document || !document->origin().is_same_origin(m_active_document->origin())) {
// 3. If the browsing context is a top-level browsing context, but not an auxiliary browsing context
// whose disowned is false, then set the browsing context's name to the empty string.
// FIXME: this is not checking the second part of the condition yet
if (is_top_level())
m_name = String::empty();
}
// 4. Set window's associated Document to document.
window.set_associated_document(document);
m_active_document = JS::make_handle(document);
// 5. Set window's relevant settings object's execution ready flag.
relevant_settings_object(window).execution_ready = true;
if (m_active_document) {
m_active_document->attach_to_browsing_context({}, *this);
if (m_page && is_top_level())
m_page->client().page_did_change_title(m_active_document->title());
}
// AD-HOC:
document->set_browsing_context(this);
if (m_page && is_top_level())
m_page->client().page_did_change_title(document->title());
}
void BrowsingContext::set_viewport_rect(Gfx::IntRect const& rect)
@ -792,22 +782,26 @@ bool BrowsingContext::still_on_its_initial_about_blank_document() const
DOM::Document const* BrowsingContext::active_document() const
{
return m_active_document.cell();
if (!m_active_window)
return nullptr;
return &m_active_window->associated_document();
}
DOM::Document* BrowsingContext::active_document()
{
return m_active_document.cell();
if (!m_active_window)
return nullptr;
return &m_active_window->associated_document();
}
HTML::Window* BrowsingContext::active_window()
{
return m_active_document ? &m_active_document->window() : nullptr;
return m_active_window;
}
HTML::Window const* BrowsingContext::active_window() const
{
return m_active_document ? &m_active_document->window() : nullptr;
return m_active_window;
}
void BrowsingContext::scroll_offset_did_change()
@ -1087,7 +1081,7 @@ DOM::ExceptionOr<void> BrowsingContext::traverse_the_history(size_t entry_index,
}
// 4. Set the active document of the browsing context to newDocument.
set_active_document(new_document);
set_active_document(*new_document);
// 5. If entry's browsing context name is not null, then:
if (entry->browsing_context_name.has_value()) {
@ -1299,4 +1293,27 @@ void BrowsingContext::set_system_visibility_state(VisibilityState visibility_sta
});
}
// https://html.spec.whatwg.org/multipage/window-object.html#a-browsing-context-is-discarded
void BrowsingContext::discard()
{
// 1. Discard all Document objects for all the entries in browsingContext's session history.
for (auto& entry : m_session_history) {
if (entry.document)
entry.document->discard();
}
// AD-HOC:
// FIXME: This should be in the session history!
if (auto* document = active_document())
document->discard();
// 2. If browsingContext is a top-level browsing context, then remove browsingContext.
if (is_top_level())
remove();
// AD-HOC:
if (parent())
parent()->remove_child(*this);
}
}