third_party/blink/renderer/modules/filesystem/file_writer_sync.h

/*
 * Copyright (C) 2010 Google Inc.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *
 *     * Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above
 * copyright notice, this list of conditions and the following disclaimer
 * in the documentation and/or other materials provided with the
 * distribution.
 *     * Neither the name of Google Inc. nor the names of its
 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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#ifndef THIRD_PARTY_BLINK_RENDERER_MODULES_FILESYSTEM_FILE_WRITER_SYNC_H_
#define THIRD_PARTY_BLINK_RENDERER_MODULES_FILESYSTEM_FILE_WRITER_SYNC_H_

#include "third_party/blink/renderer/core/execution_context/context_lifecycle_observer.h"
#include "third_party/blink/renderer/core/fileapi/file_error.h"
#include "third_party/blink/renderer/modules/filesystem/file_writer_base.h"
#include "third_party/blink/renderer/platform/bindings/script_wrappable.h"
#include "third_party/blink/renderer/platform/heap/handle.h"

namespace blink {

class Blob;
class ExceptionState;

class FileWriterSync final : public ScriptWrappable,
                             public FileWriterBase,
                             public ContextClient {
  DEFINE_WRAPPERTYPEINFO();
  USING_GARBAGE_COLLECTED_MIXIN(FileWriterSync);

 public:
  static FileWriterSync* Create(ExecutionContext* context) {
    return MakeGarbageCollected<FileWriterSync>(context);
  }

  explicit FileWriterSync(ExecutionContext* context);
  ~FileWriterSync() override;
  void Trace(blink::Visitor*) override;

  void write(Blob*, ExceptionState&);
  void seek(long long position, ExceptionState&);
  void truncate(long long length, ExceptionState&);

  // FileWriterBase
  void DidWriteImpl(int64_t bytes, bool complete) override;
  void DidTruncateImpl() override;
  void DidFailImpl(base::File::Error error) override;
  void DoTruncate(const KURL& path, int64_t offset) override;
  void DoWrite(const KURL& path,
               const String& blob_id,
               int64_t offset) override;
  void DoCancel() override;

 private:
  void PrepareForWrite();

  base::File::Error error_;
  bool complete_;
};

}  // namespace blink

#endif  // THIRD_PARTY_BLINK_RENDERER_MODULES_FILESYSTEM_FILE_WRITER_SYNC_H_