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76 lines
2.5 KiB
C++
76 lines
2.5 KiB
C++
/*
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* Copyright (c) 2024, Aliaksandr Kalenik <kalenik.aliaksandr@gmail.com>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <LibWeb/HTML/Navigable.h>
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#include <LibWeb/HTML/SessionHistoryTraversalQueue.h>
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namespace Web::HTML {
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JS_DEFINE_ALLOCATOR(SessionHistoryTraversalQueue);
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JS_DEFINE_ALLOCATOR(SessionHistoryTraversalQueueEntry);
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JS::NonnullGCPtr<SessionHistoryTraversalQueueEntry> SessionHistoryTraversalQueueEntry::create(JS::VM& vm, Function<void()> steps, JS::GCPtr<HTML::Navigable> target_navigable)
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{
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return vm.heap().allocate_without_realm<SessionHistoryTraversalQueueEntry>(JS::create_heap_function(vm.heap(), move(steps)), target_navigable);
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}
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void SessionHistoryTraversalQueueEntry::visit_edges(JS::Cell::Visitor& visitor)
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{
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Base::visit_edges(visitor);
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visitor.visit(m_steps);
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visitor.visit(m_target_navigable);
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}
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SessionHistoryTraversalQueue::SessionHistoryTraversalQueue()
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{
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m_timer = Core::Timer::create_single_shot(0, [this] {
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if (m_is_task_running && m_queue.size() > 0) {
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m_timer->start();
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return;
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}
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while (m_queue.size() > 0) {
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m_is_task_running = true;
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auto entry = m_queue.take_first();
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entry->execute_steps();
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m_is_task_running = false;
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}
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});
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}
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void SessionHistoryTraversalQueue::visit_edges(JS::Cell::Visitor& visitor)
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{
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Base::visit_edges(visitor);
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visitor.visit(m_queue);
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}
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void SessionHistoryTraversalQueue::append(Function<void()> steps)
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{
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m_queue.append(SessionHistoryTraversalQueueEntry::create(vm(), move(steps), nullptr));
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if (!m_timer->is_active()) {
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m_timer->start();
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}
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}
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void SessionHistoryTraversalQueue::append_sync(Function<void()> steps, JS::GCPtr<Navigable> target_navigable)
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{
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m_queue.append(SessionHistoryTraversalQueueEntry::create(vm(), move(steps), target_navigable));
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if (!m_timer->is_active()) {
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m_timer->start();
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}
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}
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// https://html.spec.whatwg.org/multipage/browsing-the-web.html#sync-navigations-jump-queue
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JS::GCPtr<SessionHistoryTraversalQueueEntry> SessionHistoryTraversalQueue::first_synchronous_navigation_steps_with_target_navigable_not_contained_in(Vector<JS::GCPtr<Navigable>> const& list)
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{
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auto index = m_queue.find_first_index_if([&list](auto const& entry) -> bool {
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return (entry->target_navigable() != nullptr) && !list.contains_slow(entry->target_navigable());
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});
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if (index.has_value())
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return m_queue.take(*index);
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return {};
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}
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}
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