ladybird/Userland/Libraries/LibWeb/HTML/SessionHistoryTraversalQueue.cpp
Shannon Booth fc83653f3c LibWeb: Use HeapFunction directly in SessionHistoryTraversalQueue
This allows us to use HeapFunction all of the way down, allowing us
to remove the Handle usage in after_session_callback for
create_new_child_navigable.
2024-08-18 11:15:08 +02:00

76 lines
2.5 KiB
C++

/*
* Copyright (c) 2024, Aliaksandr Kalenik <kalenik.aliaksandr@gmail.com>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <LibWeb/HTML/Navigable.h>
#include <LibWeb/HTML/SessionHistoryTraversalQueue.h>
namespace Web::HTML {
JS_DEFINE_ALLOCATOR(SessionHistoryTraversalQueue);
JS_DEFINE_ALLOCATOR(SessionHistoryTraversalQueueEntry);
JS::NonnullGCPtr<SessionHistoryTraversalQueueEntry> SessionHistoryTraversalQueueEntry::create(JS::VM& vm, JS::NonnullGCPtr<JS::HeapFunction<void()>> steps, JS::GCPtr<HTML::Navigable> target_navigable)
{
return vm.heap().allocate_without_realm<SessionHistoryTraversalQueueEntry>(steps, target_navigable);
}
void SessionHistoryTraversalQueueEntry::visit_edges(JS::Cell::Visitor& visitor)
{
Base::visit_edges(visitor);
visitor.visit(m_steps);
visitor.visit(m_target_navigable);
}
SessionHistoryTraversalQueue::SessionHistoryTraversalQueue()
{
m_timer = Core::Timer::create_single_shot(0, [this] {
if (m_is_task_running && m_queue.size() > 0) {
m_timer->start();
return;
}
while (m_queue.size() > 0) {
m_is_task_running = true;
auto entry = m_queue.take_first();
entry->execute_steps();
m_is_task_running = false;
}
});
}
void SessionHistoryTraversalQueue::visit_edges(JS::Cell::Visitor& visitor)
{
Base::visit_edges(visitor);
visitor.visit(m_queue);
}
void SessionHistoryTraversalQueue::append(JS::NonnullGCPtr<JS::HeapFunction<void()>> steps)
{
m_queue.append(SessionHistoryTraversalQueueEntry::create(vm(), steps, nullptr));
if (!m_timer->is_active()) {
m_timer->start();
}
}
void SessionHistoryTraversalQueue::append_sync(JS::NonnullGCPtr<JS::HeapFunction<void()>> steps, JS::GCPtr<Navigable> target_navigable)
{
m_queue.append(SessionHistoryTraversalQueueEntry::create(vm(), 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
JS::GCPtr<SessionHistoryTraversalQueueEntry> SessionHistoryTraversalQueue::first_synchronous_navigation_steps_with_target_navigable_not_contained_in(HashTable<JS::NonnullGCPtr<Navigable>> const& set)
{
auto index = m_queue.find_first_index_if([&set](auto const& entry) -> bool {
return (entry->target_navigable() != nullptr) && !set.contains(*entry->target_navigable());
});
if (index.has_value())
return m_queue.take(*index);
return {};
}
}