storage/browser/fileapi/file_system_quota_util.h

   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 STORAGE_BROWSER_FILEAPI_FILE_SYSTEM_QUOTA_UTIL_H_
   6 #define STORAGE_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 "storage/browser/storage_browser_export.h"
  14 #include "storage/common/fileapi/file_system_types.h"
  15 #include "url/gurl.h"
  16
  17 namespace base {
  18 class SequencedTaskRunner;
  19 }
  20
  21 namespace storage {
  22 class QuotaManagerProxy;
  23 }
  24
  25 namespace storage {
  26
  27 class FileSystemContext;
  28 class QuotaReservation;
  29
  30 // An abstract interface that provides common quota-related utility functions
  31 // for file_system_quota_client.
  32 // All the methods of this class are synchronous and need to be called on
  33 // the thread that the method name implies.
  34 class STORAGE_EXPORT FileSystemQuotaUtil {
  35  public:
  36   virtual ~FileSystemQuotaUtil() {}
  37
  38   // Deletes the data on the origin and reports the amount of deleted data
  39   // to the quota manager via |proxy|.
  40   virtual base::File::Error DeleteOriginDataOnFileTaskRunner(
  41       FileSystemContext* context,
  42       storage::QuotaManagerProxy* proxy,
  43       const GURL& origin_url,
  44       FileSystemType type) = 0;
  45
  46   virtual void GetOriginsForTypeOnFileTaskRunner(storage::FileSystemType type,
  47                                                  std::set<GURL>* origins) = 0;
  48
  49   virtual void GetOriginsForHostOnFileTaskRunner(storage::FileSystemType type,
  50                                                  const std::string& host,
  51                                                  std::set<GURL>* origins) = 0;
  52
  53   // Returns the amount of data used for the origin for usage tracking.
  54   virtual int64 GetOriginUsageOnFileTaskRunner(
  55       storage::FileSystemContext* file_system_context,
  56       const GURL& origin_url,
  57       storage::FileSystemType type) = 0;
  58
  59   // Creates new reservation object for the origin and the type.
  60   virtual scoped_refptr<QuotaReservation>
  61       CreateQuotaReservationOnFileTaskRunner(
  62           const GURL& origin_url,
  63           FileSystemType type) = 0;
  64 };
  65
  66 }  // namespace storage
  67
  68 #endif  // STORAGE_BROWSER_FILEAPI_FILE_SYSTEM_QUOTA_UTIL_H_