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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_FILE_SYSTEM_QUOTA_UTIL_H_
#define WEBKIT_BROWSER_FILEAPI_FILE_SYSTEM_QUOTA_UTIL_H_
#include <set>
#include <string>
#include "base/basictypes.h"
#include "base/files/file.h"
#include "url/gurl.h"
#include "webkit/browser/fileapi/task_runner_bound_observer_list.h"
#include "webkit/browser/webkit_storage_browser_export.h"
#include "webkit/common/fileapi/file_system_types.h"
namespace base {
class SequencedTaskRunner;
}
namespace quota {
class QuotaManagerProxy;
}
namespace fileapi {
class FileSystemContext;
class QuotaReservation;
// An abstract interface that provides common quota-related utility functions
// for file_system_quota_client.
// All the methods of this class are synchronous and need to be called on
// the thread that the method name implies.
class WEBKIT_STORAGE_BROWSER_EXPORT FileSystemQuotaUtil {
public:
virtual ~FileSystemQuotaUtil() {}
// Deletes the data on the origin and reports the amount of deleted data
// to the quota manager via |proxy|.
virtual base::File::Error DeleteOriginDataOnFileTaskRunner(
FileSystemContext* context,
quota::QuotaManagerProxy* proxy,
const GURL& origin_url,
FileSystemType type) = 0;
virtual void GetOriginsForTypeOnFileTaskRunner(
fileapi::FileSystemType type,
std::set<GURL>* origins) = 0;
virtual void GetOriginsForHostOnFileTaskRunner(
fileapi::FileSystemType type,
const std::string& host,
std::set<GURL>* origins) = 0;
// Returns the amount of data used for the origin for usage tracking.
virtual int64 GetOriginUsageOnFileTaskRunner(
fileapi::FileSystemContext* file_system_context,
const GURL& origin_url,
fileapi::FileSystemType type) = 0;
// Creates new reservation object for the origin and the type.
virtual scoped_refptr<QuotaReservation>
CreateQuotaReservationOnFileTaskRunner(
const GURL& origin_url,
FileSystemType type) = 0;
virtual void AddFileUpdateObserver(
FileSystemType type,
FileUpdateObserver* observer,
base::SequencedTaskRunner* task_runner) = 0;
virtual void AddFileChangeObserver(
FileSystemType type,
FileChangeObserver* observer,
base::SequencedTaskRunner* task_runner) = 0;
virtual void AddFileAccessObserver(
FileSystemType type,
FileAccessObserver* observer,
base::SequencedTaskRunner* task_runner) = 0;
// Returns the observer list for |type|, or returns NULL if any observers
// have not been registered on |type|.
virtual const UpdateObserverList* GetUpdateObservers(
FileSystemType type) const = 0;
virtual const ChangeObserverList* GetChangeObservers(
FileSystemType type) const = 0;
virtual const AccessObserverList* GetAccessObservers(
FileSystemType type) const = 0;
};
} // namespace fileapi
#endif // WEBKIT_BROWSER_FILEAPI_FILE_SYSTEM_QUOTA_UTIL_H_
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