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// Copyright 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 COMPONENTS_DRIVE_FILE_SYSTEM_CREATE_FILE_OPERATION_H_
#define COMPONENTS_DRIVE_FILE_SYSTEM_CREATE_FILE_OPERATION_H_
#include "base/basictypes.h"
#include "base/memory/ref_counted.h"
#include "base/memory/weak_ptr.h"
#include "base/threading/thread_checker.h"
#include "components/drive/file_errors.h"
namespace base {
class FilePath;
class SequencedTaskRunner;
} // namespace base
namespace drive {
namespace internal {
class ResourceMetadata;
} // namespace internal
class ResourceEntry;
namespace file_system {
class OperationDelegate;
// This class encapsulates the drive CreateFile function. It is responsible for
// sending the request to the drive API, then updating the local state and
// metadata to reflect the new state.
class CreateFileOperation {
public:
CreateFileOperation(base::SequencedTaskRunner* blocking_task_runner,
OperationDelegate* delegate,
internal::ResourceMetadata* metadata);
~CreateFileOperation();
// Creates an empty file at |file_path|. When the file
// already exists at that path, the operation fails if |is_exclusive| is true,
// and it succeeds without doing anything if the flag is false.
// If |mime_type| is non-empty, it is used as the mime type of the entry. If
// the parameter is empty, the type is guessed from |file_path|.
//
// |callback| must not be null.
void CreateFile(const base::FilePath& file_path,
bool is_exclusive,
const std::string& mime_type,
const FileOperationCallback& callback);
private:
// Part of CreateFile(). Called after the updating local state is completed.
void CreateFileAfterUpdateLocalState(const FileOperationCallback& callback,
const base::FilePath& file_path,
bool is_exclusive,
ResourceEntry* entry,
FileError error);
scoped_refptr<base::SequencedTaskRunner> blocking_task_runner_;
OperationDelegate* delegate_;
internal::ResourceMetadata* metadata_;
base::ThreadChecker thread_checker_;
// Note: This should remain the last member so it'll be destroyed and
// invalidate the weak pointers before any other members are destroyed.
base::WeakPtrFactory<CreateFileOperation> weak_ptr_factory_;
DISALLOW_COPY_AND_ASSIGN(CreateFileOperation);
};
} // namespace file_system
} // namespace drive
#endif // COMPONENTS_DRIVE_FILE_SYSTEM_CREATE_FILE_OPERATION_H_
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