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// Copyright (c) 2012 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_FILE_UTIL_PROXY_H_
#define WEBKIT_FILEAPI_FILE_SYSTEM_FILE_UTIL_PROXY_H_
#include <vector>
#include "base/callback.h"
#include "base/file_path.h"
#include "base/file_util_proxy.h"
#include "base/memory/ref_counted.h"
#include "base/platform_file.h"
#include "base/tracked_objects.h"
namespace base {
class MessageLoopProxy;
}
namespace fileapi {
using base::MessageLoopProxy;
using base::PlatformFile;
using base::PlatformFileError;
using base::PlatformFileInfo;
class FileSystemFileUtil;
class FileSystemOperationContext;
class FileSystemPath;
// This class provides asynchronous access to FileSystemFileUtil methods for
// FileSystem API operations. This also implements cross-FileUtil copy/move
// operations on top of FileSystemFileUtil methods.
class FileSystemFileUtilProxy {
public:
typedef base::FileUtilProxy::Entry Entry;
typedef base::Callback<void(PlatformFileError status)> StatusCallback;
typedef base::Callback<void(PlatformFileError status,
bool created
)> EnsureFileExistsCallback;
typedef base::Callback<void(PlatformFileError status,
const PlatformFileInfo& info,
const FilePath& platform_path
)> GetFileInfoCallback;
typedef base::Callback<void(PlatformFileError,
const std::vector<Entry>&,
bool has_more)> ReadDirectoryCallback;
typedef base::Callback<PlatformFileError(bool* /* created */
)> EnsureFileExistsTask;
typedef base::Callback<PlatformFileError(PlatformFileInfo*,
FilePath*)> GetFileInfoTask;
typedef base::Callback<PlatformFileError(std::vector<Entry>*
)> ReadDirectoryTask;
// Copies a file or a directory from |src_path| to |dest_path| by calling
// FileSystemFileUtil's following methods on the given |message_loop_proxy|.
// - CopyOrMoveFile() for same-filesystem operations
// - CopyInForeignFile() for (limited) cross-filesystem operations
//
// Error cases:
// If destination's parent doesn't exist.
// If source dir exists but destination path is an existing file.
// If source file exists but destination path is an existing directory.
// If source is a parent of destination.
// If source doesn't exist.
// If source and dest are the same path in the same filesystem.
static bool Copy(
scoped_refptr<MessageLoopProxy> message_loop_proxy,
FileSystemOperationContext* context,
FileSystemFileUtil* src_util,
FileSystemFileUtil* dest_util,
const FileSystemPath& src_path,
const FileSystemPath& dest_path,
const StatusCallback& callback);
// Moves a file or a directory from |src_path| to |dest_path| by calling
// FileSystemFileUtil's following methods on the given |message_loop_proxy|.
// - CopyOrMoveFile() for same-filesystem operations
// - CopyInForeignFile() for (limited) cross-filesystem operations
//
// This method returns an error on the same error cases with Copy.
static bool Move(
scoped_refptr<MessageLoopProxy> message_loop_proxy,
FileSystemOperationContext* context,
FileSystemFileUtil* src_util,
FileSystemFileUtil* dest_util,
const FileSystemPath& src_path,
const FileSystemPath& dest_path,
const StatusCallback& callback);
// Calls EnsureFileExistsTask |task| on the given |message_loop_proxy|.
static bool RelayEnsureFileExists(
scoped_refptr<MessageLoopProxy> message_loop_proxy,
const EnsureFileExistsTask& task,
const EnsureFileExistsCallback& callback);
// Calls GetFileInfoTask |task| on the given |message_loop_proxy|.
static bool RelayGetFileInfo(
scoped_refptr<MessageLoopProxy> message_loop_proxy,
const GetFileInfoTask& task,
const GetFileInfoCallback& callback);
// Calls ReadDirectoryTask |task| on the given |message_loop_proxy|.
// TODO: this should support returning entries in multiple chunks.
static bool RelayReadDirectory(
scoped_refptr<MessageLoopProxy> message_loop_proxy,
const ReadDirectoryTask& task,
const ReadDirectoryCallback& callback);
private:
DISALLOW_IMPLICIT_CONSTRUCTORS(FileSystemFileUtilProxy);
};
} // namespace fileapi
#endif // WEBKIT_FILEAPI_FILE_SYSTEM_FILE_UTIL_PROXY_H_
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