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 <string>
   9
  10 #include "base/memory/ref_counted.h"
  11 #include "content/common/content_export.h"
  12 #include "content/public/browser/dom_storage_context.h"
  13
  14 namespace base {
  15 class FilePath;
  16 }
  17
  18 namespace storage {
  19 class SpecialStoragePolicy;
  20 }
  21
  22 namespace content {
  23
  24 class DOMStorageContextImpl;
  25
  26 // This is owned by BrowserContext (aka Profile) and encapsulates all
  27 // per-profile dom storage state.
  28 class CONTENT_EXPORT DOMStorageContextWrapper :
  29     NON_EXPORTED_BASE(public DOMStorageContext),
  30     public base::RefCountedThreadSafe<DOMStorageContextWrapper> {
  31  public:
  32   // If |data_path| is empty, nothing will be saved to disk.
  33   DOMStorageContextWrapper(
  34       const base::FilePath& data_path,
  35       storage::SpecialStoragePolicy* special_storage_policy);
  36
  37   // DOMStorageContext implementation.
  38   void GetLocalStorageUsage(
  39       const GetLocalStorageUsageCallback& callback) override;
  40   void GetSessionStorageUsage(
  41       const GetSessionStorageUsageCallback& callback) override;
  42   void DeleteLocalStorage(const GURL& origin) override;
  43   void DeleteSessionStorage(const SessionStorageUsageInfo& usage_info) override;
  44   void SetSaveSessionStorageOnDisk() override;
  45   scoped_refptr<SessionStorageNamespace> RecreateSessionStorage(
  46       const std::string& persistent_id) override;
  47   void StartScavengingUnusedSessionStorage() override;
  48
  49   // Used by content settings to alter the behavior around
  50   // what data to keep and what data to discard at shutdown.
  51   // The policy is not so straight forward to describe, see
  52   // the implementation for details.
  53   void SetForceKeepSessionState();
  54
  55   // Called when the BrowserContext/Profile is going away.
  56   void Shutdown();
  57
  58   void Flush();
  59
  60  private:
  61   friend class DOMStorageMessageFilter;  // for access to context()
  62   friend class SessionStorageNamespaceImpl;  // ditto
  63   friend class base::RefCountedThreadSafe<DOMStorageContextWrapper>;
  64
  65   ~DOMStorageContextWrapper() override;
  66   DOMStorageContextImpl* context() const { return context_.get(); }
  67
  68   scoped_refptr<DOMStorageContextImpl> context_;
  69
  70   DISALLOW_IMPLICIT_CONSTRUCTORS(DOMStorageContextWrapper);
  71 };
  72
  73 }  // namespace content
  74
  75 #endif  // CONTENT_BROWSER_DOM_STORAGE_DOM_STORAGE_CONTEXT_WRAPPER_H_