1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #ifndef WEBKIT_BROWSER_FILEAPI_FILE_SYSTEM_QUOTA_UTIL_H_ 6 #define WEBKIT_BROWSER_FILEAPI_FILE_SYSTEM_QUOTA_UTIL_H_ 7 8 #include <set> 9 #include <string> 10 11 #include "base/basictypes.h" 12 #include "base/files/file.h" 13 #include "url/gurl.h" 14 #include "webkit/browser/fileapi/task_runner_bound_observer_list.h" 15 #include "webkit/browser/webkit_storage_browser_export.h" 16 #include "webkit/common/fileapi/file_system_types.h" 17 18 namespace base { 19 class SequencedTaskRunner; 20 } 21 22 namespace quota { 23 class QuotaManagerProxy; 24 } 25 26 namespace fileapi { 27 28 class FileSystemContext; 29 class QuotaReservation; 30 31 // An abstract interface that provides common quota-related utility functions 32 // for file_system_quota_client. 33 // All the methods of this class are synchronous and need to be called on 34 // the thread that the method name implies. 35 class WEBKIT_STORAGE_BROWSER_EXPORT FileSystemQuotaUtil { 36 public: 37 virtual ~FileSystemQuotaUtil() {} 38 39 // Deletes the data on the origin and reports the amount of deleted data 40 // to the quota manager via |proxy|. 41 virtual base::File::Error DeleteOriginDataOnFileTaskRunner( 42 FileSystemContext* context, 43 quota::QuotaManagerProxy* proxy, 44 const GURL& origin_url, 45 FileSystemType type) = 0; 46 47 virtual void GetOriginsForTypeOnFileTaskRunner( 48 fileapi::FileSystemType type, 49 std::set<GURL>* origins) = 0; 50 51 virtual void GetOriginsForHostOnFileTaskRunner( 52 fileapi::FileSystemType type, 53 const std::string& host, 54 std::set<GURL>* origins) = 0; 55 56 // Returns the amount of data used for the origin for usage tracking. 57 virtual int64 GetOriginUsageOnFileTaskRunner( 58 fileapi::FileSystemContext* file_system_context, 59 const GURL& origin_url, 60 fileapi::FileSystemType type) = 0; 61 62 // Creates new reservation object for the origin and the type. 63 virtual scoped_refptr<QuotaReservation> 64 CreateQuotaReservationOnFileTaskRunner( 65 const GURL& origin_url, 66 FileSystemType type) = 0; 67 68 virtual void AddFileUpdateObserver( 69 FileSystemType type, 70 FileUpdateObserver* observer, 71 base::SequencedTaskRunner* task_runner) = 0; 72 virtual void AddFileChangeObserver( 73 FileSystemType type, 74 FileChangeObserver* observer, 75 base::SequencedTaskRunner* task_runner) = 0; 76 virtual void AddFileAccessObserver( 77 FileSystemType type, 78 FileAccessObserver* observer, 79 base::SequencedTaskRunner* task_runner) = 0; 80 81 // Returns the observer list for |type|, or returns NULL if any observers 82 // have not been registered on |type|. 83 virtual const UpdateObserverList* GetUpdateObservers( 84 FileSystemType type) const = 0; 85 virtual const ChangeObserverList* GetChangeObservers( 86 FileSystemType type) const = 0; 87 virtual const AccessObserverList* GetAccessObservers( 88 FileSystemType type) const = 0; 89 }; 90 91 } // namespace fileapi 92 93 #endif // WEBKIT_BROWSER_FILEAPI_FILE_SYSTEM_QUOTA_UTIL_H_ 94