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// Copyright (c) 2013 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 STORAGE_BROWSER_FILEAPI_ASYNC_FILE_UTIL_ADAPTER_H_
#define STORAGE_BROWSER_FILEAPI_ASYNC_FILE_UTIL_ADAPTER_H_
#include "base/memory/scoped_ptr.h"
#include "storage/browser/fileapi/async_file_util.h"
namespace storage {
class FileSystemFileUtil;
// An adapter class for FileSystemFileUtil classes to provide asynchronous
// interface.
//
// A filesystem can do either:
// - implement a synchronous version of FileUtil by extending
// FileSystemFileUtil and atach it to this adapter, or
// - directly implement AsyncFileUtil.
//
// This instance (as thus this->sync_file_util_) is guaranteed to be alive
// as far as FileSystemOperationContext given to each operation is kept alive.
class STORAGE_EXPORT AsyncFileUtilAdapter
: public NON_EXPORTED_BASE(AsyncFileUtil) {
public:
// Creates a new AsyncFileUtil for |sync_file_util|. This takes the
// ownership of |sync_file_util|. (This doesn't take scoped_ptr<> just
// to save extra make_scoped_ptr; in all use cases a new fresh FileUtil is
// created only for this adapter.)
explicit AsyncFileUtilAdapter(FileSystemFileUtil* sync_file_util);
~AsyncFileUtilAdapter() override;
FileSystemFileUtil* sync_file_util() {
return sync_file_util_.get();
}
// AsyncFileUtil overrides.
void CreateOrOpen(scoped_ptr<FileSystemOperationContext> context,
const FileSystemURL& url,
int file_flags,
const CreateOrOpenCallback& callback) override;
void EnsureFileExists(scoped_ptr<FileSystemOperationContext> context,
const FileSystemURL& url,
const EnsureFileExistsCallback& callback) override;
void CreateDirectory(scoped_ptr<FileSystemOperationContext> context,
const FileSystemURL& url,
bool exclusive,
bool recursive,
const StatusCallback& callback) override;
void GetFileInfo(scoped_ptr<FileSystemOperationContext> context,
const FileSystemURL& url,
const GetFileInfoCallback& callback) override;
void ReadDirectory(scoped_ptr<FileSystemOperationContext> context,
const FileSystemURL& url,
const ReadDirectoryCallback& callback) override;
void Touch(scoped_ptr<FileSystemOperationContext> context,
const FileSystemURL& url,
const base::Time& last_access_time,
const base::Time& last_modified_time,
const StatusCallback& callback) override;
void Truncate(scoped_ptr<FileSystemOperationContext> context,
const FileSystemURL& url,
int64 length,
const StatusCallback& callback) override;
void CopyFileLocal(scoped_ptr<FileSystemOperationContext> context,
const FileSystemURL& src_url,
const FileSystemURL& dest_url,
CopyOrMoveOption option,
const CopyFileProgressCallback& progress_callback,
const StatusCallback& callback) override;
void MoveFileLocal(scoped_ptr<FileSystemOperationContext> context,
const FileSystemURL& src_url,
const FileSystemURL& dest_url,
CopyOrMoveOption option,
const StatusCallback& callback) override;
void CopyInForeignFile(scoped_ptr<FileSystemOperationContext> context,
const base::FilePath& src_file_path,
const FileSystemURL& dest_url,
const StatusCallback& callback) override;
void DeleteFile(scoped_ptr<FileSystemOperationContext> context,
const FileSystemURL& url,
const StatusCallback& callback) override;
void DeleteDirectory(scoped_ptr<FileSystemOperationContext> context,
const FileSystemURL& url,
const StatusCallback& callback) override;
void DeleteRecursively(scoped_ptr<FileSystemOperationContext> context,
const FileSystemURL& url,
const StatusCallback& callback) override;
void CreateSnapshotFile(scoped_ptr<FileSystemOperationContext> context,
const FileSystemURL& url,
const CreateSnapshotFileCallback& callback) override;
private:
scoped_ptr<FileSystemFileUtil> sync_file_util_;
DISALLOW_COPY_AND_ASSIGN(AsyncFileUtilAdapter);
};
} // namespace storage
#endif // STORAGE_BROWSER_FILEAPI_ASYNC_FILE_UTIL_ADAPTER_H_
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