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// Copyright 2019 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef THIRD_PARTY_BLINK_RENDERER_MODULES_FILE_SYSTEM_ACCESS_FILE_SYSTEM_UNDERLYING_SINK_H_
#define THIRD_PARTY_BLINK_RENDERER_MODULES_FILE_SYSTEM_ACCESS_FILE_SYSTEM_UNDERLYING_SINK_H_
#include "third_party/blink/public/mojom/file_system_access/file_system_access_file_writer.mojom-blink.h"
#include "third_party/blink/renderer/core/execution_context/execution_context_lifecycle_observer.h"
#include "third_party/blink/renderer/core/streams/underlying_sink_base.h"
#include "third_party/blink/renderer/platform/bindings/script_wrappable.h"
#include "third_party/blink/renderer/platform/mojo/heap_mojo_remote.h"
namespace blink {
class ExceptionState;
class ScriptPromiseResolver;
class V8UnionArrayBufferOrArrayBufferViewOrBlobOrUSVString;
class WriteParams;
class FileSystemUnderlyingSink final : public UnderlyingSinkBase {
public:
explicit FileSystemUnderlyingSink(
ExecutionContext*,
mojo::PendingRemote<mojom::blink::FileSystemAccessFileWriter>);
// UnderlyingSinkBase
ScriptPromise start(ScriptState*,
WritableStreamDefaultController*,
ExceptionState&) override;
ScriptPromise write(ScriptState*,
ScriptValue chunk,
WritableStreamDefaultController*,
ExceptionState&) override;
ScriptPromise close(ScriptState*, ExceptionState&) override;
ScriptPromise abort(ScriptState*,
ScriptValue reason,
ExceptionState&) override;
void Trace(Visitor*) const override;
private:
ScriptPromise HandleParams(ScriptState*, const WriteParams&, ExceptionState&);
ScriptPromise WriteData(
ScriptState*,
uint64_t position,
const V8UnionArrayBufferOrArrayBufferViewOrBlobOrUSVString* data,
ExceptionState&);
ScriptPromise Truncate(ScriptState*, uint64_t size, ExceptionState&);
ScriptPromise Seek(ScriptState*, uint64_t offset, ExceptionState&);
void WriteComplete(mojom::blink::FileSystemAccessErrorPtr result,
uint64_t bytes_written);
void TruncateComplete(uint64_t to_size,
mojom::blink::FileSystemAccessErrorPtr result);
void CloseComplete(mojom::blink::FileSystemAccessErrorPtr result);
HeapMojoRemote<mojom::blink::FileSystemAccessFileWriter> writer_remote_;
uint64_t offset_ = 0;
Member<ScriptPromiseResolver> pending_operation_;
};
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_MODULES_FILE_SYSTEM_ACCESS_FILE_SYSTEM_UNDERLYING_SINK_H_
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