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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_DOM_STORAGE_DOM_STORAGE_MAP_H_ | 5 #ifndef WEBKIT_DOM_STORAGE_DOM_STORAGE_MAP_H_ |
| 6 #define WEBKIT_DOM_STORAGE_DOM_STORAGE_MAP_H_ | 6 #define WEBKIT_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/nullable_base::string16.h" |
| 12 #include "base/string16.h" | 12 #include "base/string16.h.h" |
| 13 #include "webkit/dom_storage/dom_storage_types.h" | 13 #include "webkit/dom_storage/dom_storage_types.h" |
| 14 #include "webkit/storage/webkit_storage_export.h" | 14 #include "webkit/storage/webkit_storage_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_STORAGE_EXPORT DomStorageMap | 21 class WEBKIT_STORAGE_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 NullableString16 Key(unsigned index); |
| 28 NullableString16 GetItem(const string16& key) const; | 28 NullableString16 GetItem(const base::string16& key) const; |
| 29 bool SetItem(const string16& key, const string16& value, | 29 bool SetItem(const base::string16& key, const base::string16& value, |
| 30 NullableString16* old_value); | 30 NullableString16* old_value); |
| 31 bool RemoveItem(const string16& key, 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 |
| 41 // Creates a new instance of DomStorageMap containing | 41 // Creates a new instance of DomStorageMap containing |
| (...skipping 13 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_DOM_STORAGE_DOM_STORAGE_MAP_H_ | 64 #endif // WEBKIT_DOM_STORAGE_DOM_STORAGE_MAP_H_ |
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