SessionHistoryTraversalQueue.h 2.2 KB

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  1. /*
  2. * Copyright (c) 2023, Aliaksandr Kalenik <kalenik.aliaksandr@gmail.com>
  3. *
  4. * SPDX-License-Identifier: BSD-2-Clause
  5. */
  6. #pragma once
  7. #include <AK/Vector.h>
  8. #include <LibCore/Timer.h>
  9. #include <LibJS/Forward.h>
  10. #include <LibJS/Heap/Cell.h>
  11. #include <LibJS/Heap/CellAllocator.h>
  12. #include <LibJS/Heap/GCPtr.h>
  13. #include <LibJS/Heap/HeapFunction.h>
  14. #include <LibJS/SafeFunction.h>
  15. #include <LibWeb/Forward.h>
  16. namespace Web::HTML {
  17. struct SessionHistoryTraversalQueueEntry : public JS::Cell {
  18. JS_CELL(SessionHistoryTraversalQueueEntry, JS::Cell);
  19. JS_DECLARE_ALLOCATOR(SessionHistoryTraversalQueueEntry);
  20. public:
  21. static JS::NonnullGCPtr<SessionHistoryTraversalQueueEntry> create(JS::VM& vm, Function<void()> steps, JS::GCPtr<HTML::Navigable> target_navigable);
  22. JS::GCPtr<HTML::Navigable> target_navigable() const { return m_target_navigable; }
  23. void execute_steps() const { m_steps->function()(); }
  24. private:
  25. SessionHistoryTraversalQueueEntry(JS::NonnullGCPtr<JS::HeapFunction<void()>> steps, JS::GCPtr<HTML::Navigable> target_navigable)
  26. : m_steps(steps)
  27. , m_target_navigable(target_navigable)
  28. {
  29. }
  30. virtual void visit_edges(Cell::Visitor&) override;
  31. JS::NonnullGCPtr<JS::HeapFunction<void()>> m_steps;
  32. JS::GCPtr<HTML::Navigable> m_target_navigable;
  33. };
  34. // https://html.spec.whatwg.org/multipage/document-sequences.html#tn-session-history-traversal-queue
  35. class SessionHistoryTraversalQueue : public JS::Cell {
  36. JS_CELL(SessionHistoryTraversalQueue, JS::Cell);
  37. JS_DECLARE_ALLOCATOR(SessionHistoryTraversalQueue);
  38. public:
  39. SessionHistoryTraversalQueue();
  40. void append(Function<void()> steps);
  41. void append_sync(Function<void()> steps, JS::GCPtr<Navigable> target_navigable);
  42. // https://html.spec.whatwg.org/multipage/browsing-the-web.html#sync-navigations-jump-queue
  43. JS::GCPtr<SessionHistoryTraversalQueueEntry> first_synchronous_navigation_steps_with_target_navigable_not_contained_in(Vector<JS::GCPtr<Navigable>> const& list);
  44. private:
  45. virtual void visit_edges(Cell::Visitor&) override;
  46. Vector<JS::NonnullGCPtr<SessionHistoryTraversalQueueEntry>> m_queue;
  47. RefPtr<Core::Timer> m_timer;
  48. bool m_is_task_running { false };
  49. };
  50. }