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97 lines
2.6 KiB
C++
97 lines
2.6 KiB
C++
/*
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* Copyright (c) 2021-2024, 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 <LibJS/Heap/Cell.h>
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#include <LibJS/Heap/CellAllocator.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 final : public JS::Cell {
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JS_CELL(Task, Cell);
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JS_DECLARE_ALLOCATOR(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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// https://w3c.github.io/performance-timeline/#dfn-performance-timeline-task-source
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PerformanceTimeline,
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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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// https://w3c.github.io/clipboard-apis/#clipboard-task-source
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Clipboard,
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// https://w3c.github.io/permissions/#permissions-task-source
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Permissions,
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// https://drafts.csswg.org/css-font-loading/#task-source
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FontLoading,
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// !!! IMPORTANT: Keep this field last!
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// This serves as the base value of all unique task sources.
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// Some elements, such as the HTMLMediaElement, must have a unique task source per instance.
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UniqueTaskSourceStart
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};
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static JS::NonnullGCPtr<Task> create(JS::VM&, Source, JS::GCPtr<DOM::Document const>, JS::NonnullGCPtr<JS::HeapFunction<void()>> steps);
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virtual ~Task() override;
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virtual void finalize() override;
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int id() const { return m_id; }
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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, JS::GCPtr<DOM::Document const>, JS::NonnullGCPtr<JS::HeapFunction<void()>> steps);
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virtual void visit_edges(Visitor&) override;
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int m_id { 0 };
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Source m_source { Source::Unspecified };
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JS::NonnullGCPtr<JS::HeapFunction<void()>> m_steps;
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JS::GCPtr<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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