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1 // Copyright 2013 The Chromium Authors. All rights reserved. | 1 // Copyright 2013 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 COMPONENTS_WEBDATA_COMMON_WEB_DATA_SERVICE_BACKEND_H_ | 5 #ifndef COMPONENTS_WEBDATA_COMMON_WEB_DATA_SERVICE_BACKEND_H_ |
6 #define COMPONENTS_WEBDATA_COMMON_WEB_DATA_SERVICE_BACKEND_H_ | 6 #define COMPONENTS_WEBDATA_COMMON_WEB_DATA_SERVICE_BACKEND_H_ |
7 | 7 |
8 #include "base/basictypes.h" | 8 #include "base/basictypes.h" |
9 #include "base/callback_forward.h" | 9 #include "base/callback_forward.h" |
10 #include "base/compiler_specific.h" | 10 #include "base/compiler_specific.h" |
11 #include "base/files/file_path.h" | 11 #include "base/files/file_path.h" |
12 #include "base/memory/ref_counted.h" | 12 #include "base/memory/ref_counted.h" |
| 13 #include "base/memory/ref_counted_delete_on_message_loop.h" |
13 #include "base/memory/scoped_ptr.h" | 14 #include "base/memory/scoped_ptr.h" |
14 #include "base/memory/scoped_vector.h" | 15 #include "base/memory/scoped_vector.h" |
15 #include "components/webdata/common/web_database_service.h" | 16 #include "components/webdata/common/web_database_service.h" |
16 #include "components/webdata/common/webdata_export.h" | 17 #include "components/webdata/common/webdata_export.h" |
17 #include "content/public/browser/browser_thread.h" | |
18 | |
19 | 18 |
20 class WebDatabase; | 19 class WebDatabase; |
21 class WebDatabaseTable; | 20 class WebDatabaseTable; |
22 class WebDataRequest; | 21 class WebDataRequest; |
23 class WebDataRequestManager; | 22 class WebDataRequestManager; |
24 | 23 |
25 namespace tracked_objects { | 24 namespace tracked_objects { |
26 class Location; | 25 class Location; |
27 } | 26 } |
28 | 27 |
29 // WebDataServiceBackend handles all database tasks posted by | 28 // WebDataServiceBackend handles all database tasks posted by |
30 // WebDatabaseService. It is refcounted to allow asynchronous destruction on the | 29 // WebDatabaseService. It is refcounted to allow asynchronous destruction on the |
31 // DB thread. | 30 // DB thread. |
32 | 31 |
33 // TODO(caitkp): Rename this class to WebDatabaseBackend. | 32 // TODO(caitkp): Rename this class to WebDatabaseBackend. |
34 | 33 |
35 class WEBDATA_EXPORT WebDataServiceBackend | 34 class WEBDATA_EXPORT WebDataServiceBackend |
36 : public base::RefCountedThreadSafe< | 35 : public base::RefCountedDeleteOnMessageLoop<WebDataServiceBackend> { |
37 WebDataServiceBackend, | |
38 content::BrowserThread::DeleteOnDBThread> { | |
39 public: | 36 public: |
40 class Delegate { | 37 class Delegate { |
41 public: | 38 public: |
42 virtual ~Delegate() {} | 39 virtual ~Delegate() {} |
43 | 40 |
44 // Invoked when the backend has finished loading the db. | 41 // Invoked when the backend has finished loading the db. |
45 virtual void DBLoaded(sql::InitStatus status) = 0; | 42 virtual void DBLoaded(sql::InitStatus status) = 0; |
46 }; | 43 }; |
47 | 44 |
48 explicit WebDataServiceBackend(const base::FilePath& path, | 45 WebDataServiceBackend(const base::FilePath& path, |
49 Delegate* delegate); | 46 Delegate* delegate, |
| 47 const scoped_refptr<base::MessageLoopProxy>& db_thread); |
50 | 48 |
51 // Must call only before InitDatabaseWithCallback. | 49 // Must call only before InitDatabaseWithCallback. |
52 void AddTable(scoped_ptr<WebDatabaseTable> table); | 50 void AddTable(scoped_ptr<WebDatabaseTable> table); |
53 | 51 |
54 // Initializes the database and notifies caller via callback when complete. | 52 // Initializes the database and notifies caller via callback when complete. |
55 // Callback is called synchronously. | 53 // Callback is called synchronously. |
56 void InitDatabase(); | 54 void InitDatabase(); |
57 | 55 |
58 // Opens the database file from the profile path if an init has not yet been | 56 // Opens the database file from the profile path if an init has not yet been |
59 // attempted. Separated from the constructor to ease construction/destruction | 57 // attempted. Separated from the constructor to ease construction/destruction |
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81 scoped_ptr<WDTypedResult> ExecuteReadTask( | 79 scoped_ptr<WDTypedResult> ExecuteReadTask( |
82 const WebDatabaseService::ReadTask& task); | 80 const WebDatabaseService::ReadTask& task); |
83 | 81 |
84 const scoped_refptr<WebDataRequestManager>& request_manager() { | 82 const scoped_refptr<WebDataRequestManager>& request_manager() { |
85 return request_manager_; | 83 return request_manager_; |
86 } | 84 } |
87 | 85 |
88 WebDatabase* database() { return db_.get(); } | 86 WebDatabase* database() { return db_.get(); } |
89 | 87 |
90 protected: | 88 protected: |
| 89 friend class base::RefCountedDeleteOnMessageLoop<WebDataServiceBackend>; |
| 90 friend class base::DeleteHelper<WebDataServiceBackend>; |
| 91 |
91 virtual ~WebDataServiceBackend(); | 92 virtual ~WebDataServiceBackend(); |
92 | 93 |
93 private: | 94 private: |
94 friend struct content::BrowserThread::DeleteOnThread< | |
95 content::BrowserThread::DB>; | |
96 friend class base::DeleteHelper<WebDataServiceBackend>; | |
97 // We have to friend RCTS<> so WIN shared-lib build is happy | |
98 // (http://crbug/112250). | |
99 friend class base::RefCountedThreadSafe<WebDataServiceBackend, | |
100 content::BrowserThread::DeleteOnDBThread>; | |
101 | |
102 // Commit the current transaction. | 95 // Commit the current transaction. |
103 void Commit(); | 96 void Commit(); |
104 | 97 |
105 // Path to database file. | 98 // Path to database file. |
106 base::FilePath db_path_; | 99 base::FilePath db_path_; |
107 | 100 |
108 // The tables that participate in managing the database. These are | 101 // The tables that participate in managing the database. These are |
109 // owned here but other than that this class does nothing with | 102 // owned here but other than that this class does nothing with |
110 // them. Their initialization is in whatever factory creates | 103 // them. Their initialization is in whatever factory creates |
111 // WebDatabaseService, and lookup by type is provided by the | 104 // WebDatabaseService, and lookup by type is provided by the |
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128 // fails), used to avoid continually trying to reinit if the db init fails. | 121 // fails), used to avoid continually trying to reinit if the db init fails. |
129 bool init_complete_; | 122 bool init_complete_; |
130 | 123 |
131 // Delegate. See the class definition above for more information. | 124 // Delegate. See the class definition above for more information. |
132 scoped_ptr<Delegate> delegate_; | 125 scoped_ptr<Delegate> delegate_; |
133 | 126 |
134 DISALLOW_COPY_AND_ASSIGN(WebDataServiceBackend); | 127 DISALLOW_COPY_AND_ASSIGN(WebDataServiceBackend); |
135 }; | 128 }; |
136 | 129 |
137 #endif // COMPONENTS_WEBDATA_COMMON_WEB_DATA_SERVICE_BACKEND_H_ | 130 #endif // COMPONENTS_WEBDATA_COMMON_WEB_DATA_SERVICE_BACKEND_H_ |
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