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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 // The InMemoryHistoryBackend is a wrapper around the in-memory URL database. | 5 // The InMemoryHistoryBackend is a wrapper around the in-memory URL database. |
6 // It maintains an in-memory cache of a subset of history that is required for | 6 // It maintains an in-memory cache of a subset of history that is required for |
7 // low-latency operations, such as in-line autocomplete. | 7 // low-latency operations, such as in-line autocomplete. |
8 // | 8 // |
9 // The in-memory cache provides the following guarantees: | 9 // The in-memory cache provides the following guarantees: |
10 // (1.) It will always contain URLRows that either have a |typed_count| > 0; or | 10 // (1.) It will always contain URLRows that either have a |typed_count| > 0; or |
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38 class FilePath; | 38 class FilePath; |
39 } | 39 } |
40 | 40 |
41 namespace history { | 41 namespace history { |
42 | 42 |
43 class InMemoryDatabase; | 43 class InMemoryDatabase; |
44 struct KeywordSearchUpdatedDetails; | 44 struct KeywordSearchUpdatedDetails; |
45 struct KeywordSearchDeletedDetails; | 45 struct KeywordSearchDeletedDetails; |
46 class URLDatabase; | 46 class URLDatabase; |
47 class URLRow; | 47 class URLRow; |
48 struct URLsDeletedDetails; | |
49 struct URLsModifiedDetails; | |
50 | 48 |
51 class InMemoryHistoryBackend : public HistoryServiceObserver, | 49 class InMemoryHistoryBackend : public HistoryServiceObserver, |
52 public content::NotificationObserver { | 50 public content::NotificationObserver { |
53 public: | 51 public: |
54 InMemoryHistoryBackend(); | 52 InMemoryHistoryBackend(); |
55 ~InMemoryHistoryBackend() override; | 53 ~InMemoryHistoryBackend() override; |
56 | 54 |
57 // Initializes the backend from the history database pointed to by the | 55 // Initializes the backend from the history database pointed to by the |
58 // full path in |history_filename|. | 56 // full path in |history_filename|. |
59 bool Init(const base::FilePath& history_filename); | 57 bool Init(const base::FilePath& history_filename); |
60 | 58 |
61 // Does initialization work when this object is attached to the history | 59 // Does initialization work when this object is attached to the history |
62 // system on the main thread. The argument is the profile with which the | 60 // system on the main thread. The argument is the profile with which the |
63 // attached history service is under. | 61 // attached history service is under. |
64 void AttachToHistoryService(Profile* profile, | 62 void AttachToHistoryService(Profile* profile, |
65 HistoryService* history_service); | 63 HistoryService* history_service); |
66 | 64 |
67 // Deletes all search terms for the specified keyword. | 65 // Deletes all search terms for the specified keyword. |
68 void DeleteAllSearchTermsForKeyword(KeywordID keyword_id); | 66 void DeleteAllSearchTermsForKeyword(KeywordID keyword_id); |
69 | 67 |
70 // Returns the underlying database associated with this backend. The current | 68 // Returns the underlying database associated with this backend. The current |
71 // autocomplete code was written fro this, but it should probably be removed | 69 // autocomplete code was written fro this, but it should probably be removed |
72 // so that it can deal directly with this object, rather than the DB. | 70 // so that it can deal directly with this object, rather than the DB. |
73 InMemoryDatabase* db() const { | 71 InMemoryDatabase* db() const { |
74 return db_.get(); | 72 return db_.get(); |
75 } | 73 } |
76 | 74 |
| 75 // Notification callback. |
| 76 void Observe(int type, |
| 77 const content::NotificationSource& source, |
| 78 const content::NotificationDetails& details) override; |
| 79 |
| 80 private: |
| 81 FRIEND_TEST_ALL_PREFIXES(HistoryBackendTest, DeleteAll); |
| 82 FRIEND_TEST_ALL_PREFIXES(InMemoryHistoryBackendTest, OnURLsDeletedEnMasse); |
| 83 friend class HistoryBackendTestBase; |
| 84 friend class InMemoryHistoryBackendTest; |
| 85 |
77 // HistoryServiceObserver: | 86 // HistoryServiceObserver: |
78 void OnURLVisited(HistoryService* history_service, | 87 void OnURLVisited(HistoryService* history_service, |
79 ui::PageTransition transition, | 88 ui::PageTransition transition, |
80 const URLRow& row, | 89 const URLRow& row, |
81 const RedirectList& redirects, | 90 const RedirectList& redirects, |
82 base::Time visit_time) override; | 91 base::Time visit_time) override; |
83 void OnURLsModified(HistoryService* history_service, | 92 void OnURLsModified(HistoryService* history_service, |
84 const URLRows& changed_urls) override; | 93 const URLRows& changed_urls) override; |
85 | 94 void OnURLsDeleted(HistoryService* history_service, |
86 // Notification callback. | 95 bool all_history, |
87 void Observe(int type, | 96 bool expired, |
88 const content::NotificationSource& source, | 97 const URLRows& deleted_rows, |
89 const content::NotificationDetails& details) override; | 98 const std::set<GURL>& favicon_urls) override; |
90 | |
91 private: | |
92 FRIEND_TEST_ALL_PREFIXES(HistoryBackendTest, DeleteAll); | |
93 | 99 |
94 // Handler for HISTORY_URL_VISITED and HISTORY_URLS_MODIFIED. | 100 // Handler for HISTORY_URL_VISITED and HISTORY_URLS_MODIFIED. |
95 void OnURLVisitedOrModified(const URLRow& url_row); | 101 void OnURLVisitedOrModified(const URLRow& url_row); |
96 | 102 |
97 // Handler for HISTORY_URLS_DELETED. | |
98 void OnURLsDeleted(const URLsDeletedDetails& details); | |
99 | |
100 // Handler for HISTORY_KEYWORD_SEARCH_TERM_UPDATED. | 103 // Handler for HISTORY_KEYWORD_SEARCH_TERM_UPDATED. |
101 void OnKeywordSearchTermUpdated(const KeywordSearchUpdatedDetails& details); | 104 void OnKeywordSearchTermUpdated(const KeywordSearchUpdatedDetails& details); |
102 | 105 |
103 // Handler for HISTORY_KEYWORD_SEARCH_TERM_DELETED. | 106 // Handler for HISTORY_KEYWORD_SEARCH_TERM_DELETED. |
104 void OnKeywordSearchTermDeleted(const KeywordSearchDeletedDetails& details); | 107 void OnKeywordSearchTermDeleted(const KeywordSearchDeletedDetails& details); |
105 | 108 |
106 content::NotificationRegistrar registrar_; | 109 content::NotificationRegistrar registrar_; |
107 | 110 |
108 scoped_ptr<InMemoryDatabase> db_; | 111 scoped_ptr<InMemoryDatabase> db_; |
109 | 112 |
110 // The profile that this object is attached. May be NULL before | 113 // The profile that this object is attached. May be NULL before |
111 // initialization. | 114 // initialization. |
112 Profile* profile_; | 115 Profile* profile_; |
113 ScopedObserver<HistoryService, HistoryServiceObserver> | 116 ScopedObserver<HistoryService, HistoryServiceObserver> |
114 history_service_observer_; | 117 history_service_observer_; |
115 HistoryService* history_service_; | 118 HistoryService* history_service_; |
116 | 119 |
117 DISALLOW_COPY_AND_ASSIGN(InMemoryHistoryBackend); | 120 DISALLOW_COPY_AND_ASSIGN(InMemoryHistoryBackend); |
118 }; | 121 }; |
119 | 122 |
120 } // namespace history | 123 } // namespace history |
121 | 124 |
122 #endif // CHROME_BROWSER_HISTORY_IN_MEMORY_HISTORY_BACKEND_H_ | 125 #endif // CHROME_BROWSER_HISTORY_IN_MEMORY_HISTORY_BACKEND_H_ |
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