content/browser/dom_storage/session_storage_namespace_impl.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 CONTENT_BROWSER_DOM_STORAGE_SESSION_STORAGE_NAMESPACE_IMPL_H_
   6 #define CONTENT_BROWSER_DOM_STORAGE_SESSION_STORAGE_NAMESPACE_IMPL_H_
   7
   8 #include "base/basictypes.h"
   9 #include "base/memory/ref_counted.h"
  10 #include "content/common/content_export.h"
  11 #include "content/public/browser/session_storage_namespace.h"
  12
  13 namespace content {
  14
  15 class DOMStorageContextWrapper;
  16 class DOMStorageSession;
  17
  18 class SessionStorageNamespaceImpl
  19     : NON_EXPORTED_BASE(public SessionStorageNamespace) {
  20  public:
  21   // Constructs a |SessionStorageNamespaceImpl| and allocates new IDs for it.
  22   //
  23   // The CONTENT_EXPORT allows TestRenderViewHost to instantiate these.
  24   CONTENT_EXPORT explicit SessionStorageNamespaceImpl(
  25       DOMStorageContextWrapper* context);
  26
  27   // Constructs a |SessionStorageNamespaceImpl| by cloning
  28   // |namespace_to_clone|. Allocates new IDs for it.
  29   SessionStorageNamespaceImpl(DOMStorageContextWrapper* context,
  30                               int64 namepace_id_to_clone);
  31
  32   // Constructs a |SessionStorageNamespaceImpl| and assigns |persistent_id|
  33   // to it. Allocates a new non-persistent ID.
  34   SessionStorageNamespaceImpl(DOMStorageContextWrapper* context,
  35                               const std::string& persistent_id);
  36
  37   // Creates an alias of |master_session_storage_namespace|. This will allocate
  38   // a new non-persistent ID.
  39   explicit SessionStorageNamespaceImpl(
  40       SessionStorageNamespaceImpl* master_session_storage_namespace);
  41
  42   // SessionStorageNamespace implementation.
  43   virtual int64 id() const OVERRIDE;
  44   virtual const std::string& persistent_id() const OVERRIDE;
  45   virtual void SetShouldPersist(bool should_persist) OVERRIDE;
  46   virtual bool should_persist() const OVERRIDE;
  47
  48   SessionStorageNamespaceImpl* Clone();
  49   bool IsFromContext(DOMStorageContextWrapper* context);
  50
  51   virtual void AddTransactionLogProcessId(int process_id) OVERRIDE;
  52   virtual void RemoveTransactionLogProcessId(int process_id) OVERRIDE;
  53   virtual void Merge(bool actually_merge,
  54                      int process_id,
  55                      SessionStorageNamespace* other,
  56                      const MergeResultCallback& callback) OVERRIDE;
  57   virtual bool IsAliasOf(SessionStorageNamespace* other) OVERRIDE;
  58   virtual SessionStorageNamespace* CreateAlias() OVERRIDE;
  59
  60  private:
  61   explicit SessionStorageNamespaceImpl(DOMStorageSession* clone);
  62   virtual ~SessionStorageNamespaceImpl();
  63
  64   scoped_refptr<DOMStorageSession> session_;
  65
  66   DISALLOW_COPY_AND_ASSIGN(SessionStorageNamespaceImpl);
  67 };
  68
  69 }  // namespace content
  70
  71 #endif  // CONTENT_BROWSER_DOM_STORAGE_SESSION_STORAGE_NAMESPACE_IMPL_H_