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LibWeb: Add the WritableStreamDefaultWriter interface

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Matthew Olsson 2023-03-30 19:27:45 -07:00 • committed by Linus Groh
parent e93560b769
commit bdab61ad93
11 changed files with 270 additions and 3 deletions
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60
Userland/Libraries/LibWeb/Streams/WritableStreamDefaultWriter.h Normal file
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/*
* Copyright (c) 2023, Matthew Olsson <mattco@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/Function.h>
#include <AK/SinglyLinkedList.h>
#include <LibJS/Forward.h>
#include <LibWeb/Bindings/PlatformObject.h>
#include <LibWeb/Forward.h>
#include <LibWeb/WebIDL/Promise.h>
namespace Web::Streams {
// https://streams.spec.whatwg.org/#writablestreamdefaultwriter
class WritableStreamDefaultWriter final : public Bindings::PlatformObject {
WEB_PLATFORM_OBJECT(WritableStreamDefaultWriter, Bindings::PlatformObject);
public:
static WebIDL::ExceptionOr<JS::NonnullGCPtr<WritableStreamDefaultWriter>> construct_impl(JS::Realm&, JS::NonnullGCPtr<WritableStream>);
virtual ~WritableStreamDefaultWriter() override = default;
JS::GCPtr<JS::Object> closed();
WebIDL::ExceptionOr<Optional<double>> desired_size() const;
JS::GCPtr<JS::Object> ready();
JS::GCPtr<WebIDL::Promise> closed_promise() { return m_closed_promise; }
void set_closed_promise(JS::GCPtr<WebIDL::Promise> value) { m_closed_promise = value; }
JS::GCPtr<WebIDL::Promise> ready_promise() { return m_ready_promise; }
void set_ready_promise(JS::GCPtr<WebIDL::Promise> value) { m_ready_promise = value; }
JS::GCPtr<WritableStream const> stream() const { return m_stream; }
void set_stream(JS::GCPtr<WritableStream> value) { m_stream = value; }
private:
explicit WritableStreamDefaultWriter(JS::Realm&);
virtual JS::ThrowCompletionOr<void> initialize(JS::Realm&) override;
virtual void visit_edges(Cell::Visitor&) override;
// https://streams.spec.whatwg.org/#writablestreamdefaultwriter-closedpromise
// A promise returned by the writer’s closed getter
JS::GCPtr<WebIDL::Promise> m_closed_promise;
// https://streams.spec.whatwg.org/#writablestreamdefaultwriter-readypromise
// A promise returned by the writer’s ready getter
JS::GCPtr<WebIDL::Promise> m_ready_promise;
// https://streams.spec.whatwg.org/#writablestreamdefaultwriter-stream
// A WritableStream instance that owns this reader
JS::GCPtr<WritableStream> m_stream;
};
}