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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 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 | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef WEBKIT_COMMON_DOM_STORAGE_DOM_STORAGE_MAP_H_ | 5 #ifndef WEBKIT_COMMON_DOM_STORAGE_DOM_STORAGE_MAP_H_ |
6 #define WEBKIT_COMMON_DOM_STORAGE_DOM_STORAGE_MAP_H_ | 6 #define WEBKIT_COMMON_DOM_STORAGE_DOM_STORAGE_MAP_H_ |
7 | 7 |
8 #include <map> | 8 #include <map> |
9 | 9 |
10 #include "base/memory/ref_counted.h" | 10 #include "base/memory/ref_counted.h" |
11 #include "base/nullable_string16.h" | 11 #include "base/strings/nullable_string16.h" |
12 #include "base/strings/string16.h" | 12 #include "base/strings/string16.h" |
13 #include "webkit/common/dom_storage/dom_storage_types.h" | 13 #include "webkit/common/dom_storage/dom_storage_types.h" |
14 #include "webkit/common/webkit_common_export.h" | 14 #include "webkit/common/webkit_common_export.h" |
15 | 15 |
16 namespace dom_storage { | 16 namespace dom_storage { |
17 | 17 |
18 // A wrapper around a std::map that adds refcounting and | 18 // A wrapper around a std::map that adds refcounting and |
19 // tracks the size in bytes of the keys/values, enforcing a quota. | 19 // tracks the size in bytes of the keys/values, enforcing a quota. |
20 // See class comments for DomStorageContext for a larger overview. | 20 // See class comments for DomStorageContext for a larger overview. |
21 class WEBKIT_COMMON_EXPORT DomStorageMap | 21 class WEBKIT_COMMON_EXPORT DomStorageMap |
22 : public base::RefCountedThreadSafe<DomStorageMap> { | 22 : public base::RefCountedThreadSafe<DomStorageMap> { |
23 public: | 23 public: |
24 explicit DomStorageMap(size_t quota); | 24 explicit DomStorageMap(size_t quota); |
25 | 25 |
26 unsigned Length() const; | 26 unsigned Length() const; |
27 NullableString16 Key(unsigned index); | 27 base::NullableString16 Key(unsigned index); |
28 NullableString16 GetItem(const base::string16& key) const; | 28 base::NullableString16 GetItem(const base::string16& key) const; |
29 bool SetItem(const base::string16& key, const base::string16& value, | 29 bool SetItem(const base::string16& key, const base::string16& value, |
30 NullableString16* old_value); | 30 base::NullableString16* old_value); |
31 bool RemoveItem(const base::string16& key, base::string16* old_value); | 31 bool RemoveItem(const base::string16& key, base::string16* old_value); |
32 | 32 |
33 // Swaps this instances values_ with |map|. | 33 // Swaps this instances values_ with |map|. |
34 // Note: to grandfather in pre-existing files that are overbudget, | 34 // Note: to grandfather in pre-existing files that are overbudget, |
35 // this method does not do quota checking. | 35 // this method does not do quota checking. |
36 void SwapValues(ValuesMap* map); | 36 void SwapValues(ValuesMap* map); |
37 | 37 |
38 // Writes a copy of the current set of values_ to the |map|. | 38 // Writes a copy of the current set of values_ to the |map|. |
39 void ExtractValues(ValuesMap* map) const { *map = values_; } | 39 void ExtractValues(ValuesMap* map) const { *map = values_; } |
40 | 40 |
(...skipping 14 matching lines...) Expand all Loading... |
55 ValuesMap values_; | 55 ValuesMap values_; |
56 ValuesMap::const_iterator key_iterator_; | 56 ValuesMap::const_iterator key_iterator_; |
57 unsigned last_key_index_; | 57 unsigned last_key_index_; |
58 size_t bytes_used_; | 58 size_t bytes_used_; |
59 size_t quota_; | 59 size_t quota_; |
60 }; | 60 }; |
61 | 61 |
62 } // namespace dom_storage | 62 } // namespace dom_storage |
63 | 63 |
64 #endif // WEBKIT_COMMON_DOM_STORAGE_DOM_STORAGE_MAP_H_ | 64 #endif // WEBKIT_COMMON_DOM_STORAGE_DOM_STORAGE_MAP_H_ |
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