storage/browser/quota/quota_manager_proxy.h

   1 // Copyright 2014 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_QUOTA_QUOTA_MANAGER_PROXY_H_
   6 #define STORAGE_BROWSER_QUOTA_QUOTA_MANAGER_PROXY_H_
   7
   8 #include "base/basictypes.h"
   9 #include "base/callback.h"
  10 #include "base/files/file_path.h"
  11 #include "base/memory/ref_counted.h"
  12 #include "base/memory/scoped_ptr.h"
  13 #include "base/memory/weak_ptr.h"
  14 #include "base/sequenced_task_runner_helpers.h"
  15 #include "storage/browser/quota/quota_callbacks.h"
  16 #include "storage/browser/quota/quota_client.h"
  17 #include "storage/browser/quota/quota_database.h"
  18 #include "storage/browser/quota/quota_manager.h"
  19 #include "storage/browser/quota/quota_task.h"
  20 #include "storage/browser/quota/special_storage_policy.h"
  21 #include "storage/browser/storage_browser_export.h"
  22
  23 namespace base {
  24 class SequencedTaskRunner;
  25 class SingleThreadTaskRunner;
  26 }
  27
  28 namespace storage {
  29
  30 // The proxy may be called and finally released on any thread.
  31 class STORAGE_EXPORT QuotaManagerProxy
  32     : public base::RefCountedThreadSafe<QuotaManagerProxy> {
  33  public:
  34   typedef QuotaManager::GetUsageAndQuotaCallback
  35       GetUsageAndQuotaCallback;
  36
  37   virtual void RegisterClient(QuotaClient* client);
  38   virtual void NotifyStorageAccessed(QuotaClient::ID client_id,
  39                                      const GURL& origin,
  40                                      StorageType type);
  41   virtual void NotifyStorageModified(QuotaClient::ID client_id,
  42                                      const GURL& origin,
  43                                      StorageType type,
  44                                      int64 delta);
  45   virtual void NotifyOriginInUse(const GURL& origin);
  46   virtual void NotifyOriginNoLongerInUse(const GURL& origin);
  47
  48   virtual void SetUsageCacheEnabled(QuotaClient::ID client_id,
  49                                     const GURL& origin,
  50                                     StorageType type,
  51                                     bool enabled);
  52   virtual void GetUsageAndQuota(
  53       base::SequencedTaskRunner* original_task_runner,
  54       const GURL& origin,
  55       StorageType type,
  56       const GetUsageAndQuotaCallback& callback);
  57
  58   // This method may only be called on the IO thread.
  59   // It may return NULL if the manager has already been deleted.
  60   QuotaManager* quota_manager() const;
  61
  62  protected:
  63   friend class QuotaManager;
  64   friend class base::RefCountedThreadSafe<QuotaManagerProxy>;
  65
  66   QuotaManagerProxy(
  67       QuotaManager* manager,
  68       const scoped_refptr<base::SingleThreadTaskRunner>& io_thread);
  69   virtual ~QuotaManagerProxy();
  70
  71   QuotaManager* manager_;  // only accessed on the io thread
  72   scoped_refptr<base::SingleThreadTaskRunner> io_thread_;
  73
  74   DISALLOW_COPY_AND_ASSIGN(QuotaManagerProxy);
  75 };
  76
  77 }  // namespace storage
  78
  79 #endif  // STORAGE_BROWSER_QUOTA_QUOTA_MANAGER_PROXY_H_