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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_PROXY_H_
#define CHROME_BROWSER_CHROMEOS_DRIVE_FILE_SYSTEM_PROXY_H_
#include "chrome/browser/chromeos/drive/file_errors.h"
#include "webkit/fileapi/remote_file_system_proxy.h"
namespace fileapi {
class FileSystemURL;
}
namespace drive {
class DriveEntryProto;
class FileSystemInterface;
typedef std::vector<DriveEntryProto> DriveEntryProtoVector;
// Implementation of File API's remote file system proxy for Drive file system.
class FileSystemProxy : public fileapi::RemoteFileSystemProxyInterface {
public:
using fileapi::RemoteFileSystemProxyInterface::OpenFileCallback;
// |file_system| is the FileSystem instance owned by DriveSystemService.
explicit FileSystemProxy(FileSystemInterface* file_system);
// Detaches this instance from |file_system_|.
// Method calls may result in no-op after calling this method.
// This method must be called on UI thread.
void DetachFromFileSystem();
// fileapi::RemoteFileSystemProxyInterface overrides.
virtual void GetFileInfo(
const fileapi::FileSystemURL& url,
const fileapi::FileSystemOperation::GetMetadataCallback&
callback) OVERRIDE;
virtual void Copy(
const fileapi::FileSystemURL& src_url,
const fileapi::FileSystemURL& dest_url,
const fileapi::FileSystemOperation::StatusCallback& callback)
OVERRIDE;
virtual void Move(
const fileapi::FileSystemURL& src_url,
const fileapi::FileSystemURL& dest_url,
const fileapi::FileSystemOperation::StatusCallback& callback)
OVERRIDE;
virtual void ReadDirectory(const fileapi::FileSystemURL& url,
const fileapi::FileSystemOperation::ReadDirectoryCallback&
callback) OVERRIDE;
virtual void Remove(
const fileapi::FileSystemURL& url, bool recursive,
const fileapi::FileSystemOperation::StatusCallback& callback)
OVERRIDE;
virtual void CreateDirectory(
const fileapi::FileSystemURL& file_url,
bool exclusive,
bool recursive,
const fileapi::FileSystemOperation::StatusCallback& callback)
OVERRIDE;
virtual void CreateFile(
const fileapi::FileSystemURL& file_url,
bool exclusive,
const fileapi::FileSystemOperation::StatusCallback& callback)
OVERRIDE;
virtual void Truncate(
const fileapi::FileSystemURL& file_url, int64 length,
const fileapi::FileSystemOperation::StatusCallback& callback)
OVERRIDE;
virtual void CreateSnapshotFile(
const fileapi::FileSystemURL& url,
const fileapi::FileSystemOperation::SnapshotFileCallback&
callback) OVERRIDE;
virtual void CreateWritableSnapshotFile(
const fileapi::FileSystemURL& url,
const fileapi::WritableSnapshotFile& callback) OVERRIDE;
virtual void OpenFile(
const fileapi::FileSystemURL& url,
int file_flags,
base::ProcessHandle peer_handle,
const OpenFileCallback& callback) OVERRIDE;
virtual void NotifyCloseFile(const fileapi::FileSystemURL& url) OVERRIDE;
virtual void TouchFile(
const fileapi::FileSystemURL& url,
const base::Time& last_access_time,
const base::Time& last_modified_time,
const fileapi::FileSystemOperation::StatusCallback& callback)
OVERRIDE;
protected:
virtual ~FileSystemProxy();
private:
// Checks if a given |url| belongs to this file system. If it does,
// the call will return true and fill in |file_path| with a file path of
// a corresponding element within this file system.
static bool ValidateUrl(const fileapi::FileSystemURL& url,
base::FilePath* file_path);
// Helper method to call methods of DriveFilesSystem. This method aborts
// method calls in case DetachFromFileSystem() has been called.
void CallFileSystemMethodOnUIThread(const base::Closure& method_call);
// Used to implement CallFileSystemMethodOnUIThread.
void CallFileSystemMethodOnUIThreadInternal(
const base::Closure& method_call);
// Helper callback for relaying reply for status callbacks to the
// calling thread.
void OnStatusCallback(
const fileapi::FileSystemOperation::StatusCallback& callback,
FileError error);
// Helper callback for relaying reply for metadata retrieval request to the
// calling thread.
void OnGetMetadata(
const base::FilePath& file_path,
const fileapi::FileSystemOperation::GetMetadataCallback&
callback,
FileError error,
scoped_ptr<DriveEntryProto> entry_proto);
// Helper callback for relaying reply for GetEntryInfoByPath() to the
// calling thread.
void OnGetEntryInfoByPath(
const base::FilePath& entry_path,
const fileapi::FileSystemOperation::SnapshotFileCallback&
callback,
FileError error,
scoped_ptr<DriveEntryProto> entry_proto);
// Helper callback for relaying reply for ReadDirectory() to the calling
// thread.
void OnReadDirectory(
const fileapi::FileSystemOperation::ReadDirectoryCallback&
callback,
FileError error,
bool hide_hosted_documents,
scoped_ptr<DriveEntryProtoVector> proto_entries);
// Helper callback for relaying reply for CreateWritableSnapshotFile() to
// the calling thread.
void OnCreateWritableSnapshotFile(
const base::FilePath& virtual_path,
const fileapi::WritableSnapshotFile& callback,
FileError result,
const base::FilePath& local_path);
// Helper callback for closing the local cache file and committing the dirty
// flag. This is triggered when the callback for CreateWritableSnapshotFile
// released the refcounted reference to the file.
void CloseWritableSnapshotFile(
const base::FilePath& virtual_path,
const base::FilePath& local_path);
// Invoked during Truncate() operation. This is called when a local modifiable
// cache is ready for truncation.
void OnFileOpenedForTruncate(
const base::FilePath& virtual_path,
int64 length,
const fileapi::FileSystemOperation::StatusCallback& callback,
FileError open_result,
const base::FilePath& local_cache_path);
// Invoked during Truncate() operation. This is called when the truncation of
// a local cache file is finished on FILE thread.
void DidTruncate(
const base::FilePath& virtual_path,
const fileapi::FileSystemOperation::StatusCallback& callback,
base::PlatformFileError truncate_result);
// Invoked during OpenFile() operation when truncate or write flags are set.
// This is called when a local modifiable cached file is ready for such
// operation.
void OnOpenFileForWriting(
int file_flags,
base::ProcessHandle peer_handle,
const OpenFileCallback& callback,
FileError file_error,
const base::FilePath& local_cache_path);
// Invoked during OpenFile() operation when file create flags are set.
void OnCreateFileForOpen(
const base::FilePath& file_path,
int file_flags,
base::ProcessHandle peer_handle,
const OpenFileCallback& callback,
FileError file_error);
// Invoked during OpenFile() operation when base::PLATFORM_FILE_OPEN_TRUNCATED
// flag is set. This is called when the truncation of a local cache file is
// finished on FILE thread.
void OnOpenAndTruncate(
base::ProcessHandle peer_handle,
const OpenFileCallback& callback,
base::PlatformFile* platform_file,
base::PlatformFileError* truncate_result);
FileSystemInterface* file_system_;
};
} // namespace chromeos
#endif // CHROME_BROWSER_CHROMEOS_DRIVE_FILE_SYSTEM_PROXY_H_
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