Ben Murdoch | bb1529c | 2013-08-08 10:24:53 +0100 | [diff] [blame^] | 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_SESSION_H_ |
| 6 | #define CONTENT_BROWSER_DOM_STORAGE_DOM_STORAGE_SESSION_H_ |
| 7 | |
| 8 | #include <string> |
| 9 | |
| 10 | #include "base/basictypes.h" |
| 11 | #include "base/memory/ref_counted.h" |
| 12 | #include "content/common/content_export.h" |
| 13 | |
| 14 | namespace content { |
| 15 | |
| 16 | class DOMStorageContextImpl; |
| 17 | |
| 18 | // This refcounted class determines the lifetime of a session |
| 19 | // storage namespace and provides an interface to Clone() an |
| 20 | // existing session storage namespace. It may be used on any thread. |
| 21 | // See class comments for DOMStorageContextImpl for a larger overview. |
| 22 | class CONTENT_EXPORT DOMStorageSession |
| 23 | : public base::RefCountedThreadSafe<DOMStorageSession> { |
| 24 | public: |
| 25 | // Constructs a |DOMStorageSession| and allocates new IDs for it. |
| 26 | explicit DOMStorageSession(DOMStorageContextImpl* context); |
| 27 | |
| 28 | // Constructs a |DOMStorageSession| and assigns |persistent_namespace_id| |
| 29 | // to it. Allocates a new non-persistent ID. |
| 30 | DOMStorageSession(DOMStorageContextImpl* context, |
| 31 | const std::string& persistent_namespace_id); |
| 32 | |
| 33 | int64 namespace_id() const { return namespace_id_; } |
| 34 | const std::string& persistent_namespace_id() const { |
| 35 | return persistent_namespace_id_; |
| 36 | } |
| 37 | void SetShouldPersist(bool should_persist); |
| 38 | bool should_persist() const; |
| 39 | bool IsFromContext(DOMStorageContextImpl* context); |
| 40 | DOMStorageSession* Clone(); |
| 41 | |
| 42 | // Constructs a |DOMStorageSession| by cloning |
| 43 | // |namespace_id_to_clone|. Allocates new IDs for it. |
| 44 | static DOMStorageSession* CloneFrom(DOMStorageContextImpl* context, |
| 45 | int64 namepace_id_to_clone); |
| 46 | |
| 47 | private: |
| 48 | friend class base::RefCountedThreadSafe<DOMStorageSession>; |
| 49 | |
| 50 | DOMStorageSession(DOMStorageContextImpl* context, |
| 51 | int64 namespace_id, |
| 52 | const std::string& persistent_namespace_id); |
| 53 | ~DOMStorageSession(); |
| 54 | |
| 55 | scoped_refptr<DOMStorageContextImpl> context_; |
| 56 | int64 namespace_id_; |
| 57 | std::string persistent_namespace_id_; |
| 58 | bool should_persist_; |
| 59 | |
| 60 | DISALLOW_IMPLICIT_CONSTRUCTORS(DOMStorageSession); |
| 61 | }; |
| 62 | |
| 63 | } // namespace content |
| 64 | |
| 65 | #endif // CONTENT_BROWSER_DOM_STORAGE_DOM_STORAGE_SESSION_H_ |