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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 WEBKIT_FILEAPI_FILE_SYSTEM_OPERATION_H_
#define WEBKIT_FILEAPI_FILE_SYSTEM_OPERATION_H_
#include <vector>
#include "base/file_path.h"
#include "base/file_util_proxy.h"
#include "base/message_loop_proxy.h"
#include "base/platform_file.h"
#include "base/ref_counted.h"
#include "base/scoped_callback_factory.h"
namespace fileapi {
class FileSystemOperationClient;
// This class is designed to serve one-time file system operation per instance.
// Only one method(CreateFile, CreateDirectory, Copy, Move, DirectoryExists,
// GetMetadata, ReadDirectory and Remove) may be called during the lifetime of
// this object and it should be called no more than once.
class FileSystemOperation {
public:
FileSystemOperation(
FileSystemOperationClient* client,
scoped_refptr<base::MessageLoopProxy> proxy);
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): Fix this as per spec
// when it is addressed in spec.
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);
protected:
// Proxy for calling file_util_proxy methods.
scoped_refptr<base::MessageLoopProxy> proxy_;
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_;
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);
};
} // namespace fileapi
#endif // WEBKIT_FILEAPI_FILE_SYSTEM_OPERATION_H_
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