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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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65 // Returns the underlying database associated with this backend. The current | 65 // Returns the underlying database associated with this backend. The current |
66 // autocomplete code was written fro this, but it should probably be removed | 66 // autocomplete code was written fro this, but it should probably be removed |
67 // so that it can deal directly with this object, rather than the DB. | 67 // so that it can deal directly with this object, rather than the DB. |
68 InMemoryDatabase* db() const { | 68 InMemoryDatabase* db() const { |
69 return db_.get(); | 69 return db_.get(); |
70 } | 70 } |
71 | 71 |
72 // Notification callback. | 72 // Notification callback. |
73 virtual void Observe(int type, | 73 virtual void Observe(int type, |
74 const content::NotificationSource& source, | 74 const content::NotificationSource& source, |
75 const content::NotificationDetails& details) OVERRIDE; | 75 const content::NotificationDetails& details) override; |
76 | 76 |
77 private: | 77 private: |
78 FRIEND_TEST_ALL_PREFIXES(HistoryBackendTest, DeleteAll); | 78 FRIEND_TEST_ALL_PREFIXES(HistoryBackendTest, DeleteAll); |
79 | 79 |
80 // Handler for HISTORY_URL_VISITED and HISTORY_URLS_MODIFIED. | 80 // Handler for HISTORY_URL_VISITED and HISTORY_URLS_MODIFIED. |
81 void OnURLVisitedOrModified(const URLRow& url_row); | 81 void OnURLVisitedOrModified(const URLRow& url_row); |
82 | 82 |
83 // Handler for HISTORY_URLS_DELETED. | 83 // Handler for HISTORY_URLS_DELETED. |
84 void OnURLsDeleted(const URLsDeletedDetails& details); | 84 void OnURLsDeleted(const URLsDeletedDetails& details); |
85 | 85 |
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96 // The profile that this object is attached. May be NULL before | 96 // The profile that this object is attached. May be NULL before |
97 // initialization. | 97 // initialization. |
98 Profile* profile_; | 98 Profile* profile_; |
99 | 99 |
100 DISALLOW_COPY_AND_ASSIGN(InMemoryHistoryBackend); | 100 DISALLOW_COPY_AND_ASSIGN(InMemoryHistoryBackend); |
101 }; | 101 }; |
102 | 102 |
103 } // namespace history | 103 } // namespace history |
104 | 104 |
105 #endif // CHROME_BROWSER_HISTORY_IN_MEMORY_HISTORY_BACKEND_H_ | 105 #endif // CHROME_BROWSER_HISTORY_IN_MEMORY_HISTORY_BACKEND_H_ |
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