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LibWeb: Implement the "queue a task" steps as a distinct AO

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This will be needed by EventSource.
This commit is contained in:
Timothy Flynn 2024-04-05 11:07:32 -04:00 • committed by Andreas Kling
parent b6f824a313
commit 9cc186b929
Notes: sideshowbarker 2024-07-16 20:12:13 +09:00
2 changed files with 27 additions and 4 deletions
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30
Userland/Libraries/LibWeb/HTML/EventLoop/EventLoop.cpp
View file

@ -369,6 +369,31 @@ void EventLoop::process()
});
}
// https://html.spec.whatwg.org/multipage/webappapis.html#queue-a-task
int queue_a_task(HTML::Task::Source source, JS::GCPtr<EventLoop> event_loop, JS::GCPtr<DOM::Document> document, JS::NonnullGCPtr<JS::HeapFunction<void()>> steps)
{
// 1. If event loop was not given, set event loop to the implied event loop.
if (!event_loop)
event_loop = main_thread_event_loop();
// FIXME: 2. If document was not given, set document to the implied document.
// 3. Let task be a new task.
// 4. Set task's steps to steps.
// 5. Set task's source to source.
// 6. Set task's document to the document.
// 7. Set task's script evaluation environment settings object set to an empty set.
auto task = HTML::Task::create(event_loop->vm(), source, document, steps);
// 8. Let queue be the task queue to which source is associated on event loop.
auto& queue = event_loop->task_queue();
// 9. Append task to queue.
queue.add(task);
return queue.last_added_task()->id();
}
// https://html.spec.whatwg.org/multipage/webappapis.html#queue-a-global-task
int queue_global_task(HTML::Task::Source source, JS::Object& global_object, JS::NonnullGCPtr<JS::HeapFunction<void()>> steps)
{
@ -384,10 +409,7 @@ int queue_global_task(HTML::Task::Source source, JS::Object& global_object, JS::
}
// 3. Queue a task given source, event loop, document, and steps.
auto& vm = global_object.vm();
event_loop->task_queue().add(HTML::Task::create(vm, source, document, steps));
return event_loop->task_queue().last_added_task()->id();
return queue_a_task(source, *event_loop, document, steps);
}
// https://html.spec.whatwg.org/#queue-a-microtask

1
Userland/Libraries/LibWeb/HTML/EventLoop/EventLoop.h
View file

@ -116,6 +116,7 @@ private:
};
EventLoop& main_thread_event_loop();
int queue_a_task(HTML::Task::Source, JS::GCPtr<EventLoop>, JS::GCPtr<DOM::Document>, JS::NonnullGCPtr<JS::HeapFunction<void()>> steps);
int queue_global_task(HTML::Task::Source, JS::Object&, JS::NonnullGCPtr<JS::HeapFunction<void()>> steps);
void queue_a_microtask(DOM::Document const*, JS::NonnullGCPtr<JS::HeapFunction<void()>> steps);
void perform_a_microtask_checkpoint();