content/browser/dom_storage/dom_storage_context_wrapper.h

   1 // Copyright 2013 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 CONTENT_BROWSER_DOM_STORAGE_DOM_STORAGE_CONTEXT_WRAPPER_H_
   6 #define CONTENT_BROWSER_DOM_STORAGE_DOM_STORAGE_CONTEXT_WRAPPER_H_
   7
   8 #include "base/memory/ref_counted.h"
   9 #include "content/common/content_export.h"
  10 #include "content/public/browser/dom_storage_context.h"
  11
  12 namespace base {
  13 class FilePath;
  14 }
  15
  16 namespace storage {
  17 class SpecialStoragePolicy;
  18 }
  19
  20 namespace content {
  21
  22 class DOMStorageContextImpl;
  23
  24 // This is owned by BrowserContext (aka Profile) and encapsulates all
  25 // per-profile dom storage state.
  26 class CONTENT_EXPORT DOMStorageContextWrapper :
  27     NON_EXPORTED_BASE(public DOMStorageContext),
  28     public base::RefCountedThreadSafe<DOMStorageContextWrapper> {
  29  public:
  30   // If |data_path| is empty, nothing will be saved to disk.
  31   DOMStorageContextWrapper(
  32       const base::FilePath& data_path,
  33       storage::SpecialStoragePolicy* special_storage_policy);
  34
  35   // DOMStorageContext implementation.
  36   void GetLocalStorageUsage(
  37       const GetLocalStorageUsageCallback& callback) override;
  38   void GetSessionStorageUsage(
  39       const GetSessionStorageUsageCallback& callback) override;
  40   void DeleteLocalStorage(const GURL& origin) override;
  41   void DeleteSessionStorage(const SessionStorageUsageInfo& usage_info) override;
  42   void SetSaveSessionStorageOnDisk() override;
  43   scoped_refptr<SessionStorageNamespace> RecreateSessionStorage(
  44       const std::string& persistent_id) override;
  45   void StartScavengingUnusedSessionStorage() override;
  46
  47   // Used by content settings to alter the behavior around
  48   // what data to keep and what data to discard at shutdown.
  49   // The policy is not so straight forward to describe, see
  50   // the implementation for details.
  51   void SetForceKeepSessionState();
  52
  53   // Called when the BrowserContext/Profile is going away.
  54   void Shutdown();
  55
  56  private:
  57   friend class DOMStorageMessageFilter;  // for access to context()
  58   friend class SessionStorageNamespaceImpl;  // ditto
  59   friend class base::RefCountedThreadSafe<DOMStorageContextWrapper>;
  60
  61   ~DOMStorageContextWrapper() override;
  62   DOMStorageContextImpl* context() const { return context_.get(); }
  63
  64   scoped_refptr<DOMStorageContextImpl> context_;
  65
  66   DISALLOW_IMPLICIT_CONSTRUCTORS(DOMStorageContextWrapper);
  67 };
  68
  69 }  // namespace content
  70
  71 #endif  // CONTENT_BROWSER_DOM_STORAGE_DOM_STORAGE_CONTEXT_WRAPPER_H_