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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 CHROME_BROWSER_CHROMEOS_DRIVE_FILE_SYSTEM_UPDATE_OPERATION_H_
#define CHROME_BROWSER_CHROMEOS_DRIVE_FILE_SYSTEM_UPDATE_OPERATION_H_
#include "base/basictypes.h"
#include "base/memory/scoped_ptr.h"
#include "base/memory/weak_ptr.h"
#include "chrome/browser/chromeos/drive/drive_resource_metadata.h"
#include "chrome/browser/google_apis/gdata_errorcode.h"
class FilePath;
class GURL;
namespace google_apis {
class DriveUploaderInterface;
}
namespace drive {
class DriveCache;
class DriveEntryProto;
namespace file_system {
class OperationObserver;
// This class encapsulates the drive Update function. It is resposible for
// sending the request to the drive API, then updating the local state and
// metadata to reflect the new state.
class UpdateOperation {
public:
UpdateOperation(DriveCache* cache,
DriveResourceMetadata* metadata,
google_apis::DriveUploaderInterface* uploader,
scoped_refptr<base::SequencedTaskRunner> blocking_task_runner,
OperationObserver* observer);
virtual ~UpdateOperation();
// Updates a file by the given |resource_id| on the Drive server by
// uploading an updated version. Used for uploading dirty files. The file
// should already be present in the cache.
//
// TODO(satorux): As of now, the function only handles files with the dirty
// bit committed. We should eliminate the restriction. crbug.com/134558.
//
// Can only be called from UI thread. |callback| must not be null.
virtual void UpdateFileByResourceId(
const std::string& resource_id,
const FileOperationCallback& callback);
private:
// Part of UpdateFileByResourceId(). Called when
// DriveResourceMetadata::GetEntryInfoByResourceId() is complete.
// |callback| must not be null.
void UpdateFileByEntryInfo(
const FileOperationCallback& callback,
DriveFileError error,
const FilePath& drive_file_path,
scoped_ptr<DriveEntryProto> entry_proto);
// Part of UpdateFileByResourceId().
// Called when DriveCache::GetFileOnUIThread() is completed for
// UpdateFileByResourceId().
// |callback| must not be null.
void OnGetFileCompleteForUpdateFile(const FileOperationCallback& callback,
const FilePath& drive_file_path,
scoped_ptr<DriveEntryProto> entry_proto,
DriveFileError error,
const FilePath& cache_file_path);
// Part of UpdateFileByResourceId().
// Callback for getting the size of the cache file in the blocking pool.
// |callback| must not be null.
void OnGetFileSizeCompleteForUpdateFile(
const FileOperationCallback& callback,
const FilePath& drive_file_path,
scoped_ptr<DriveEntryProto> entry_proto,
const FilePath& cache_file_path,
int64* file_size,
bool get_file_size_result);
// Part of UpdateFileByResourceId().
// Called when DriveUploader::UploadUpdatedFile() is completed for
// UpdateFileByResourceId().
// |callback| must not be null.
void OnUpdatedFileUploaded(
const FileOperationCallback& callback,
google_apis::DriveUploadError error,
const FilePath& gdata_path,
const FilePath& file_path,
scoped_ptr<google_apis::DocumentEntry> document_entry);
// Part of UpdateFileByResourceId().
// |callback| must not be null.
void OnUpdatedFileRefreshed(const FileOperationCallback& callback,
DriveFileError error,
const FilePath& drive_file_path,
scoped_ptr<DriveEntryProto> entry_proto);
DriveCache* cache_;
DriveResourceMetadata* metadata_;
google_apis::DriveUploaderInterface* uploader_;
scoped_refptr<base::SequencedTaskRunner> blocking_task_runner_;
OperationObserver* observer_;
// WeakPtrFactory bound to the UI thread.
// 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<UpdateOperation> weak_ptr_factory_;
DISALLOW_COPY_AND_ASSIGN(UpdateOperation);
};
} // namespace file_system
} // namespace drive
#endif // CHROME_BROWSER_CHROMEOS_DRIVE_FILE_SYSTEM_UPDATE_OPERATION_H_
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