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81 lines
2.0 KiB
C++
81 lines
2.0 KiB
C++
/*
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* Copyright (c) 2021-2022, 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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#pragma once
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#include <AK/Function.h>
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#include <AK/NonnullOwnPtr.h>
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#include <AK/RefPtr.h>
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#include <LibJS/Heap/Handle.h>
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#include <LibJS/SafeFunction.h>
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#include <LibWeb/Forward.h>
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namespace Web::HTML {
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struct UniqueTaskSource;
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class Task {
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public:
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// https://html.spec.whatwg.org/multipage/webappapis.html#generic-task-sources
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enum class Source {
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Unspecified,
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DOMManipulation,
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UserInteraction,
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Networking,
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HistoryTraversal,
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IdleTask,
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PostedMessage,
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Microtask,
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TimerTask,
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JavaScriptEngine,
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// https://html.spec.whatwg.org/multipage/webappapis.html#navigation-and-traversal-task-source
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NavigationAndTraversal,
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// https://w3c.github.io/FileAPI/#fileReadingTaskSource
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FileReading,
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// https://www.w3.org/TR/intersection-observer/#intersectionobserver-task-source
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IntersectionObserver,
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// Some elements, such as the HTMLMediaElement, must have a unique task source per instance.
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// Keep this field last, to serve as the base value of all unique task sources.
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UniqueTaskSourceStart,
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// https://html.spec.whatwg.org/multipage/canvas.html#canvas-blob-serialisation-task-source
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CanvasBlobSerializationTask,
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};
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static NonnullOwnPtr<Task> create(Source source, DOM::Document const* document, JS::SafeFunction<void()> steps)
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{
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return adopt_own(*new Task(source, document, move(steps)));
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}
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~Task();
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Source source() const { return m_source; }
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void execute();
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DOM::Document const* document() const;
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bool is_runnable() const;
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private:
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Task(Source, DOM::Document const*, JS::SafeFunction<void()> steps);
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Source m_source { Source::Unspecified };
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JS::SafeFunction<void()> m_steps;
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JS::Handle<DOM::Document const> m_document;
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};
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struct UniqueTaskSource {
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UniqueTaskSource();
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~UniqueTaskSource();
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Task::Source const source;
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};
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}
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