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LibWeb: Implement synchronous session history steps

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This commit is contained in:
Andrew Kaster 2023-11-03 19:18:18 -06:00 • committed by Alexander Kalenik
parent d6d1485720
commit 4f088aff3d
4 changed files with 117 additions and 26 deletions
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38
Userland/Libraries/LibWeb/HTML/SessionHistoryTraversalQueue.h
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@ -6,10 +6,19 @@
#pragma once
#include <AK/Vector.h>
#include <LibCore/Timer.h>
#include <LibJS/Heap/GCPtr.h>
#include <LibJS/SafeFunction.h>
#include <LibWeb/Forward.h>
namespace Web::HTML {
struct SessionHistoryTraversalQueueEntry {
JS::SafeFunction<void()> steps;
JS::GCPtr<HTML::Navigable> target_navigable;
};
// https://html.spec.whatwg.org/multipage/document-sequences.html#tn-session-history-traversal-queue
class SessionHistoryTraversalQueue {
public:
@ -17,30 +26,47 @@ public:
{
m_timer = Core::Timer::create_single_shot(0, [this] {
while (m_queue.size() > 0) {
auto steps = m_queue.take_first();
steps();
auto entry = m_queue.take_first();
entry.steps();
}
}).release_value_but_fixme_should_propagate_errors();
}
void append(JS::SafeFunction<void()> steps)
{
m_queue.append(move(steps));
m_queue.append({ move(steps), nullptr });
if (!m_timer->is_active()) {
m_timer->start();
}
}
void append_sync(JS::SafeFunction<void()> steps, JS::GCPtr<Navigable> target_navigable)
{
m_queue.append({ move(steps), target_navigable });
if (!m_timer->is_active()) {
m_timer->start();
}
}
// https://html.spec.whatwg.org/multipage/browsing-the-web.html#sync-navigations-jump-queue
SessionHistoryTraversalQueueEntry first_synchronous_navigation_steps_with_target_navigable_not_contained_in(Vector<JS::GCPtr<Navigable>> const& list)
{
auto index = m_queue.find_first_index_if([&list](auto const& entry) -> bool {
return (entry.target_navigable != nullptr) && !list.contains_slow(entry.target_navigable);
});
return index.has_value() ? m_queue.take(*index) : SessionHistoryTraversalQueueEntry {};
}
void process()
{
while (m_queue.size() > 0) {
auto steps = m_queue.take_first();
steps();
auto entry = m_queue.take_first();
entry.steps();
}
}
private:
Vector<JS::SafeFunction<void()>> m_queue;
Vector<SessionHistoryTraversalQueueEntry> m_queue;
RefPtr<Core::Timer> m_timer;
};