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// Copyright 2014 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 CHROME_BROWSER_CHROMEOS_FILE_SYSTEM_PROVIDER_OPERATIONS_READ_FILE_H_
#define CHROME_BROWSER_CHROMEOS_FILE_SYSTEM_PROVIDER_OPERATIONS_READ_FILE_H_
#include "base/files/file.h"
#include "base/memory/ref_counted.h"
#include "base/memory/scoped_ptr.h"
#include "chrome/browser/chromeos/file_system_provider/operations/operation.h"
#include "chrome/browser/chromeos/file_system_provider/provided_file_system_info.h"
#include "chrome/browser/chromeos/file_system_provider/provided_file_system_interface.h"
#include "chrome/browser/chromeos/file_system_provider/request_value.h"
#include "net/base/io_buffer.h"
#include "storage/browser/fileapi/async_file_util.h"
namespace base {
class FilePath;
} // namespace base
namespace extensions {
class EventRouter;
} // namespace extensions
namespace chromeos {
namespace file_system_provider {
namespace operations {
// Bridge between fileapi read file and providing extension's read fil request.
// Created per request.
class ReadFile : public Operation {
public:
ReadFile(
extensions::EventRouter* event_router,
const ProvidedFileSystemInfo& file_system_info,
int file_handle,
scoped_refptr<net::IOBuffer> buffer,
int64 offset,
int length,
const ProvidedFileSystemInterface::ReadChunkReceivedCallback& callback);
virtual ~ReadFile();
// Operation overrides.
virtual bool Execute(int request_id) override;
virtual void OnSuccess(int request_id,
scoped_ptr<RequestValue> result,
bool has_more) override;
virtual void OnError(int request_id,
scoped_ptr<RequestValue> result,
base::File::Error error) override;
private:
int file_handle_;
scoped_refptr<net::IOBuffer> buffer_;
int64 offset_;
int length_;
int64 current_offset_;
const ProvidedFileSystemInterface::ReadChunkReceivedCallback callback_;
DISALLOW_COPY_AND_ASSIGN(ReadFile);
};
} // namespace operations
} // namespace file_system_provider
} // namespace chromeos
#endif // CHROME_BROWSER_CHROMEOS_FILE_SYSTEM_PROVIDER_OPERATIONS_READ_FILE_H_
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