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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_BROWSER_FILEAPI_SANDBOX_FILE_SYSTEM_BACKEND_H_
#define WEBKIT_BROWSER_FILEAPI_SANDBOX_FILE_SYSTEM_BACKEND_H_
#include <set>
#include <string>
#include "base/compiler_specific.h"
#include "base/files/file_path.h"
#include "base/memory/ref_counted.h"
#include "base/memory/scoped_ptr.h"
#include "webkit/browser/fileapi/file_system_backend.h"
#include "webkit/browser/fileapi/file_system_quota_util.h"
#include "webkit/browser/fileapi/sandbox_file_system_backend_delegate.h"
#include "webkit/browser/fileapi/task_runner_bound_observer_list.h"
#include "webkit/browser/quota/special_storage_policy.h"
#include "webkit/browser/webkit_storage_browser_export.h"
namespace fileapi {
// An interface to construct or crack sandboxed filesystem paths for
// TEMPORARY or PERSISTENT filesystems, which are placed under the user's
// profile directory in a sandboxed way.
// This interface also lets one enumerate and remove storage for the origins
// that use the filesystem.
class WEBKIT_STORAGE_BROWSER_EXPORT SandboxFileSystemBackend
: public FileSystemBackend,
public FileSystemQuotaUtil {
public:
explicit SandboxFileSystemBackend(SandboxFileSystemBackendDelegate* delegate);
virtual ~SandboxFileSystemBackend();
// FileSystemBackend overrides.
virtual bool CanHandleType(FileSystemType type) const OVERRIDE;
virtual void Initialize(FileSystemContext* context) OVERRIDE;
virtual void OpenFileSystem(
const GURL& origin_url,
FileSystemType type,
OpenFileSystemMode mode,
const OpenFileSystemCallback& callback) OVERRIDE;
virtual FileSystemFileUtil* GetFileUtil(FileSystemType type) OVERRIDE;
virtual AsyncFileUtil* GetAsyncFileUtil(FileSystemType type) OVERRIDE;
virtual CopyOrMoveFileValidatorFactory* GetCopyOrMoveFileValidatorFactory(
FileSystemType type,
base::PlatformFileError* error_code) OVERRIDE;
virtual FileSystemOperation* CreateFileSystemOperation(
const FileSystemURL& url,
FileSystemContext* context,
base::PlatformFileError* error_code) const OVERRIDE;
virtual scoped_ptr<webkit_blob::FileStreamReader> CreateFileStreamReader(
const FileSystemURL& url,
int64 offset,
const base::Time& expected_modification_time,
FileSystemContext* context) const OVERRIDE;
virtual scoped_ptr<FileStreamWriter> CreateFileStreamWriter(
const FileSystemURL& url,
int64 offset,
FileSystemContext* context) const OVERRIDE;
virtual FileSystemQuotaUtil* GetQuotaUtil() OVERRIDE;
// Returns an origin enumerator of this backend.
// This method can only be called on the file thread.
SandboxFileSystemBackendDelegate::OriginEnumerator* CreateOriginEnumerator();
// FileSystemQuotaUtil overrides.
virtual base::PlatformFileError DeleteOriginDataOnFileThread(
FileSystemContext* context,
quota::QuotaManagerProxy* proxy,
const GURL& origin_url,
FileSystemType type) OVERRIDE;
virtual void GetOriginsForTypeOnFileThread(
FileSystemType type,
std::set<GURL>* origins) OVERRIDE;
virtual void GetOriginsForHostOnFileThread(
FileSystemType type,
const std::string& host,
std::set<GURL>* origins) OVERRIDE;
virtual int64 GetOriginUsageOnFileThread(
FileSystemContext* context,
const GURL& origin_url,
FileSystemType type) OVERRIDE;
virtual void AddFileUpdateObserver(
FileSystemType type,
FileUpdateObserver* observer,
base::SequencedTaskRunner* task_runner) OVERRIDE;
virtual void AddFileChangeObserver(
FileSystemType type,
FileChangeObserver* observer,
base::SequencedTaskRunner* task_runner) OVERRIDE;
virtual void AddFileAccessObserver(
FileSystemType type,
FileAccessObserver* observer,
base::SequencedTaskRunner* task_runner) OVERRIDE;
virtual const UpdateObserverList* GetUpdateObservers(
FileSystemType type) const OVERRIDE;
virtual const ChangeObserverList* GetChangeObservers(
FileSystemType type) const OVERRIDE;
virtual const AccessObserverList* GetAccessObservers(
FileSystemType type) const OVERRIDE;
void set_enable_temporary_file_system_in_incognito(bool enable) {
enable_temporary_file_system_in_incognito_ = enable;
}
private:
SandboxFileSystemBackendDelegate* delegate_; // Not owned.
bool enable_temporary_file_system_in_incognito_;
// Observers.
UpdateObserverList update_observers_;
ChangeObserverList change_observers_;
AccessObserverList access_observers_;
DISALLOW_COPY_AND_ASSIGN(SandboxFileSystemBackend);
};
} // namespace fileapi
#endif // WEBKIT_BROWSER_FILEAPI_SANDBOX_FILE_SYSTEM_BACKEND_H_
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