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// Copyright (c) 2010 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_FILE_SYSTEM_FILE_SYSTEM_OPERATION_H_
#define CHROME_BROWSER_FILE_SYSTEM_FILE_SYSTEM_OPERATION_H_
#include <vector>
#include "base/file_path.h"
#include "base/file_util_proxy.h"
#include "base/platform_file.h"
#include "base/scoped_callback_factory.h"
class FileSystemOperationClient;
// This class is designed to serve one-time file system operation per instance.
// Each operation method (CreateFile, CreateDirectory, Copy, Move,
// DIrectoryExists, GetMetadata, ReadDirectory and Remove) must be called
// only once in its lifetime.
class FileSystemOperation {
public:
FileSystemOperation(int request_id, FileSystemOperationClient* client);
void CreateFile(const FilePath& path,
bool exclusive);
void CreateDirectory(const FilePath& path,
bool exclusive);
void Copy(const FilePath& src_path,
const FilePath& dest_path);
// If |dest_path| exists and is a directory, behavior is unspecified or
// varies for different platforms.
// TODO(kkanetkar): Add more checks.
void Move(const FilePath& src_path,
const FilePath& dest_path);
void DirectoryExists(const FilePath& path);
void FileExists(const FilePath& path);
void GetMetadata(const FilePath& path);
void ReadDirectory(const FilePath& path);
void Remove(const FilePath& path);
private:
// Callbacks for above methods.
void DidCreateFileExclusive(
base::PlatformFileError rv, base::PassPlatformFile file, bool created);
// Returns success even if the file already existed.
void DidCreateFileNonExclusive(
base::PlatformFileError rv, base::PassPlatformFile file, bool created);
// Generic callback that translates platform errors to WebKit error codes.
void DidFinishFileOperation(base::PlatformFileError rv);
void DidDirectoryExists(base::PlatformFileError rv,
const base::PlatformFileInfo& file_info);
void DidFileExists(base::PlatformFileError rv,
const base::PlatformFileInfo& file_info);
void DidGetMetadata(base::PlatformFileError rv,
const base::PlatformFileInfo& file_info);
void DidReadDirectory(
base::PlatformFileError rv,
const std::vector<base::file_util_proxy::Entry>& entries);
// Not owned.
FileSystemOperationClient* client_;
// Client's request id.
int request_id_;
base::ScopedCallbackFactory<FileSystemOperation> callback_factory_;
// A flag to make sure we call operation only once per instance.
bool operation_pending_;
DISALLOW_COPY_AND_ASSIGN(FileSystemOperation);
};
#endif // CHROME_BROWSER_FILE_SYSTEM_FILE_SYSTEM_OPERATION_H_
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