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Some elements, like HTMLMediaElement, must have a unique task sources for every instance of that element that is created. Support this with a simple wrapper around IDAllocator.
51 lines
1.1 KiB
C++
51 lines
1.1 KiB
C++
/*
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* Copyright (c) 2021, Andreas Kling <kling@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <AK/IDAllocator.h>
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#include <LibWeb/DOM/Document.h>
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#include <LibWeb/HTML/EventLoop/Task.h>
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namespace Web::HTML {
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static IDAllocator s_unique_task_source_allocator { static_cast<int>(Task::Source::UniqueTaskSourceStart) };
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Task::Task(Source source, DOM::Document const* document, JS::SafeFunction<void()> steps)
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: m_source(source)
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, m_steps(move(steps))
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, m_document(JS::make_handle(document))
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{
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}
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Task::~Task() = default;
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void Task::execute()
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{
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m_steps();
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}
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// https://html.spec.whatwg.org/#concept-task-runnable
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bool Task::is_runnable() const
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{
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// A task is runnable if its document is either null or fully active.
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return !m_document.ptr() || m_document->is_fully_active();
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}
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DOM::Document const* Task::document() const
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{
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return m_document.ptr();
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}
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UniqueTaskSource::UniqueTaskSource()
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: source(static_cast<Task::Source>(s_unique_task_source_allocator.allocate()))
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{
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}
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UniqueTaskSource::~UniqueTaskSource()
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{
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s_unique_task_source_allocator.deallocate(static_cast<int>(source));
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}
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}
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