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Side by Side Diff: content/renderer/dom_storage/dom_storage_cached_area.h

Issue 22297005: Move webkit/{browser,common}/dom_storage into content/ (Closed) Base URL: svn://svn.chromium.org/chrome/trunk/src
Patch Set: Created 7 years, 4 months ago
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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 CONTENT_RENDERER_DOM_STORAGE_DOM_STORAGE_CACHED_AREA_H_ 5 #ifndef CONTENT_RENDERER_DOM_STORAGE_DOM_STORAGE_CACHED_AREA_H_
6 #define CONTENT_RENDERER_DOM_STORAGE_DOM_STORAGE_CACHED_AREA_H_ 6 #define CONTENT_RENDERER_DOM_STORAGE_DOM_STORAGE_CACHED_AREA_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/memory/weak_ptr.h" 11 #include "base/memory/weak_ptr.h"
12 #include "base/strings/nullable_string16.h" 12 #include "base/strings/nullable_string16.h"
13 #include "content/common/content_export.h" 13 #include "content/common/content_export.h"
14 #include "url/gurl.h" 14 #include "url/gurl.h"
15 15
16 namespace dom_storage {
17 class DomStorageMap;
18 }
19
20 namespace content { 16 namespace content {
21 17
22 class DomStorageProxy; 18 class DOMStorageMap;
19 class DOMStorageProxy;
23 20
24 // Unlike the other classes in the dom_storage library, this one is intended 21 // Unlike the other classes in the dom_storage library, this one is intended
25 // for use in renderer processes. It maintains a complete cache of the 22 // for use in renderer processes. It maintains a complete cache of the
26 // origin's Map of key/value pairs for fast access. The cache is primed on 23 // origin's Map of key/value pairs for fast access. The cache is primed on
27 // first access and changes are written to the backend thru the |proxy|. 24 // first access and changes are written to the backend thru the |proxy|.
28 // Mutations originating in other processes are applied to the cache via 25 // Mutations originating in other processes are applied to the cache via
29 // the ApplyMutation method. 26 // the ApplyMutation method.
30 class CONTENT_EXPORT DomStorageCachedArea 27 class CONTENT_EXPORT DOMStorageCachedArea
31 : public base::RefCounted<DomStorageCachedArea> { 28 : public base::RefCounted<DOMStorageCachedArea> {
32 public: 29 public:
33 DomStorageCachedArea(int64 namespace_id, 30 DOMStorageCachedArea(int64 namespace_id,
34 const GURL& origin, 31 const GURL& origin,
35 DomStorageProxy* proxy); 32 DOMStorageProxy* proxy);
36 33
37 int64 namespace_id() const { return namespace_id_; } 34 int64 namespace_id() const { return namespace_id_; }
38 const GURL& origin() const { return origin_; } 35 const GURL& origin() const { return origin_; }
39 36
40 unsigned GetLength(int connection_id); 37 unsigned GetLength(int connection_id);
41 base::NullableString16 GetKey(int connection_id, unsigned index); 38 base::NullableString16 GetKey(int connection_id, unsigned index);
42 base::NullableString16 GetItem(int connection_id, const base::string16& key); 39 base::NullableString16 GetItem(int connection_id, const base::string16& key);
43 bool SetItem(int connection_id, 40 bool SetItem(int connection_id,
44 const base::string16& key, 41 const base::string16& key,
45 const base::string16& value, 42 const base::string16& value,
46 const GURL& page_url); 43 const GURL& page_url);
47 void RemoveItem(int connection_id, 44 void RemoveItem(int connection_id,
48 const base::string16& key, 45 const base::string16& key,
49 const GURL& page_url); 46 const GURL& page_url);
50 void Clear(int connection_id, const GURL& page_url); 47 void Clear(int connection_id, const GURL& page_url);
51 48
52 void ApplyMutation(const base::NullableString16& key, 49 void ApplyMutation(const base::NullableString16& key,
53 const base::NullableString16& new_value); 50 const base::NullableString16& new_value);
54 51
55 size_t MemoryBytesUsedByCache() const; 52 size_t MemoryBytesUsedByCache() const;
56 53
57 private: 54 private:
58 friend class DomStorageCachedAreaTest; 55 friend class DOMStorageCachedAreaTest;
59 friend class base::RefCounted<DomStorageCachedArea>; 56 friend class base::RefCounted<DOMStorageCachedArea>;
60 ~DomStorageCachedArea(); 57 ~DOMStorageCachedArea();
61 58
62 // Primes the cache, loading all values for the area. 59 // Primes the cache, loading all values for the area.
63 void Prime(int connection_id); 60 void Prime(int connection_id);
64 void PrimeIfNeeded(int connection_id) { 61 void PrimeIfNeeded(int connection_id) {
65 if (!map_.get()) 62 if (!map_.get())
66 Prime(connection_id); 63 Prime(connection_id);
67 } 64 }
68 65
69 // Resets the object back to its newly constructed state. 66 // Resets the object back to its newly constructed state.
70 void Reset(); 67 void Reset();
71 68
72 // Async completion callbacks for proxied operations. 69 // Async completion callbacks for proxied operations.
73 // These are used to maintain cache consistency by preventing 70 // These are used to maintain cache consistency by preventing
74 // mutation events from other processes from overwriting local 71 // mutation events from other processes from overwriting local
75 // changes made after the mutation. 72 // changes made after the mutation.
76 void OnLoadComplete(bool success); 73 void OnLoadComplete(bool success);
77 void OnSetItemComplete(const base::string16& key, bool success); 74 void OnSetItemComplete(const base::string16& key, bool success);
78 void OnClearComplete(bool success); 75 void OnClearComplete(bool success);
79 void OnRemoveItemComplete(const base::string16& key, bool success); 76 void OnRemoveItemComplete(const base::string16& key, bool success);
80 77
81 bool should_ignore_key_mutation(const base::string16& key) const { 78 bool should_ignore_key_mutation(const base::string16& key) const {
82 return ignore_key_mutations_.find(key) != ignore_key_mutations_.end(); 79 return ignore_key_mutations_.find(key) != ignore_key_mutations_.end();
83 } 80 }
84 81
85 bool ignore_all_mutations_; 82 bool ignore_all_mutations_;
86 std::map<base::string16, int> ignore_key_mutations_; 83 std::map<base::string16, int> ignore_key_mutations_;
87 84
88 int64 namespace_id_; 85 int64 namespace_id_;
89 GURL origin_; 86 GURL origin_;
90 scoped_refptr<dom_storage::DomStorageMap> map_; 87 scoped_refptr<DOMStorageMap> map_;
91 scoped_refptr<DomStorageProxy> proxy_; 88 scoped_refptr<DOMStorageProxy> proxy_;
92 base::WeakPtrFactory<DomStorageCachedArea> weak_factory_; 89 base::WeakPtrFactory<DOMStorageCachedArea> weak_factory_;
93 }; 90 };
94 91
95 } // namespace content 92 } // namespace content
96 93
97 #endif // CONTENT_RENDERER_DOM_STORAGE_DOM_STORAGE_CACHED_AREA_H_ 94 #endif // CONTENT_RENDERER_DOM_STORAGE_DOM_STORAGE_CACHED_AREA_H_
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