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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 WEBKIT_BROWSER_DOM_STORAGE_DOM_STORAGE_SESSION_H_ | |
6 #define WEBKIT_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 "webkit/browser/webkit_storage_browser_export.h" | |
13 | |
14 namespace dom_storage { | |
15 | |
16 class DomStorageContext; | |
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 DomStorageContext for a larger overview. | |
22 class WEBKIT_STORAGE_BROWSER_EXPORT DomStorageSession | |
23 : public base::RefCountedThreadSafe<DomStorageSession> { | |
24 public: | |
25 // Constructs a |DomStorageSession| and allocates new IDs for it. | |
26 explicit DomStorageSession(DomStorageContext* context); | |
27 | |
28 // Constructs a |DomStorageSession| and assigns |persistent_namespace_id| | |
29 // to it. Allocates a new non-persistent ID. | |
30 DomStorageSession(DomStorageContext* 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(DomStorageContext* 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(DomStorageContext* context, | |
45 int64 namepace_id_to_clone); | |
46 | |
47 private: | |
48 friend class base::RefCountedThreadSafe<DomStorageSession>; | |
49 | |
50 DomStorageSession(DomStorageContext* context, | |
51 int64 namespace_id, | |
52 const std::string& persistent_namespace_id); | |
53 ~DomStorageSession(); | |
54 | |
55 scoped_refptr<DomStorageContext> 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 dom_storage | |
64 | |
65 #endif // WEBKIT_BROWSER_DOM_STORAGE_DOM_STORAGE_SESSION_H_ | |
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