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   virtual void GetLocalStorageUsage(
  37       const GetLocalStorageUsageCallback& callback) OVERRIDE;
  38   virtual void GetSessionStorageUsage(
  39       const GetSessionStorageUsageCallback& callback) OVERRIDE;
  40   virtual void DeleteLocalStorage(const GURL& origin) OVERRIDE;
  41   virtual void DeleteSessionStorage(
  42       const SessionStorageUsageInfo& usage_info) OVERRIDE;
  43   virtual void SetSaveSessionStorageOnDisk() OVERRIDE;
  44   virtual scoped_refptr<SessionStorageNamespace>
  45       RecreateSessionStorage(const std::string& persistent_id) OVERRIDE;
  46   virtual void StartScavengingUnusedSessionStorage() OVERRIDE;
  47
  48   // Used by content settings to alter the behavior around
  49   // what data to keep and what data to discard at shutdown.
  50   // The policy is not so straight forward to describe, see
  51   // the implementation for details.
  52   void SetForceKeepSessionState();
  53
  54   // Called when the BrowserContext/Profile is going away.
  55   void Shutdown();
  56
  57  private:
  58   friend class DOMStorageMessageFilter;  // for access to context()
  59   friend class SessionStorageNamespaceImpl;  // ditto
  60   friend class base::RefCountedThreadSafe<DOMStorageContextWrapper>;
  61
  62   virtual ~DOMStorageContextWrapper();
  63   DOMStorageContextImpl* context() const { return context_.get(); }
  64
  65   scoped_refptr<DOMStorageContextImpl> context_;
  66
  67   DISALLOW_IMPLICIT_CONSTRUCTORS(DOMStorageContextWrapper);
  68 };
  69
  70 }  // namespace content
  71
  72 #endif  // CONTENT_BROWSER_DOM_STORAGE_DOM_STORAGE_CONTEXT_WRAPPER_H_