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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 COMPONENTS_WEBDATA_COMMON_WEB_DATA_SERVICE_BASE_H_ | 5 #ifndef COMPONENTS_WEBDATA_COMMON_WEB_DATA_SERVICE_BASE_H_ |
6 #define COMPONENTS_WEBDATA_COMMON_WEB_DATA_SERVICE_BASE_H_ | 6 #define COMPONENTS_WEBDATA_COMMON_WEB_DATA_SERVICE_BASE_H_ |
7 | 7 |
8 #include "base/callback_forward.h" | 8 #include "base/callback_forward.h" |
9 #include "base/files/file_path.h" | 9 #include "base/files/file_path.h" |
10 #include "base/memory/ref_counted.h" | 10 #include "base/memory/ref_counted.h" |
11 #include "base/memory/scoped_ptr.h" | 11 #include "base/memory/scoped_ptr.h" |
12 #include "base/supports_user_data.h" | |
13 #include "components/webdata/common/web_database_observer.h" | 12 #include "components/webdata/common/web_database_observer.h" |
14 #include "components/webdata/common/webdata_export.h" | 13 #include "components/webdata/common/webdata_export.h" |
15 #include "content/public/browser/browser_thread.h" | 14 #include "content/public/browser/browser_thread.h" |
16 #include "content/public/browser/notification_source.h" | 15 #include "content/public/browser/notification_source.h" |
17 #include "sql/init_status.h" | 16 #include "sql/init_status.h" |
18 | 17 |
19 class WebDatabase; | 18 class WebDatabase; |
20 class WebDatabaseService; | 19 class WebDatabaseService; |
21 class WebDatabaseTable; | 20 class WebDatabaseTable; |
22 | 21 |
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82 | 81 |
83 // Returns true if the database load has completetd successfully, and | 82 // Returns true if the database load has completetd successfully, and |
84 // ShutdownOnUIThread has not yet been called. | 83 // ShutdownOnUIThread has not yet been called. |
85 virtual bool IsDatabaseLoaded(); | 84 virtual bool IsDatabaseLoaded(); |
86 | 85 |
87 // Returns a pointer to the DB (used by SyncableServices). May return NULL if | 86 // Returns a pointer to the DB (used by SyncableServices). May return NULL if |
88 // the database is not loaded or otherwise unavailable. Must be called on | 87 // the database is not loaded or otherwise unavailable. Must be called on |
89 // DBThread. | 88 // DBThread. |
90 virtual WebDatabase* GetDatabase(); | 89 virtual WebDatabase* GetDatabase(); |
91 | 90 |
92 // Returns a SupportsUserData objects that may be used to store data | |
93 // owned by the DB thread on this object. Should be called only from | |
94 // the DB thread, and will be destroyed on the DB thread soon after | |
95 // |ShutdownOnUIThread()| is called. | |
96 base::SupportsUserData* GetDBUserData(); | |
97 | |
98 protected: | 91 protected: |
99 virtual ~WebDataServiceBase(); | 92 virtual ~WebDataServiceBase(); |
100 virtual void ShutdownOnDBThread(); | |
101 | 93 |
102 // Our database service. | 94 // Our database service. |
103 scoped_refptr<WebDatabaseService> wdbs_; | 95 scoped_refptr<WebDatabaseService> wdbs_; |
104 | 96 |
105 // True if we've received a notification that the WebDatabase has loaded. | 97 // True if we've received a notification that the WebDatabase has loaded. |
106 bool db_loaded_; | 98 bool db_loaded_; |
107 | 99 |
108 private: | 100 private: |
109 friend struct content::BrowserThread::DeleteOnThread< | 101 friend struct content::BrowserThread::DeleteOnThread< |
110 content::BrowserThread::UI>; | 102 content::BrowserThread::UI>; |
111 friend class base::DeleteHelper<WebDataServiceBase>; | 103 friend class base::DeleteHelper<WebDataServiceBase>; |
112 // We have to friend RCTS<> so WIN shared-lib build is happy (crbug/112250). | 104 // We have to friend RCTS<> so WIN shared-lib build is happy (crbug/112250). |
113 friend class base::RefCountedThreadSafe<WebDataServiceBase, | 105 friend class base::RefCountedThreadSafe<WebDataServiceBase, |
114 content::BrowserThread::DeleteOnUIThread>; | 106 content::BrowserThread::DeleteOnUIThread>; |
115 | 107 |
116 ProfileErrorCallback profile_error_callback_; | 108 ProfileErrorCallback profile_error_callback_; |
117 | |
118 // This makes the destructor public, and thus allows us to aggregate | |
119 // SupportsUserData. It is private by default to prevent incorrect | |
120 // usage in class hierarchies where it is inherited by | |
121 // reference-counted objects. | |
122 class SupportsUserDataAggregatable : public base::SupportsUserData { | |
123 public: | |
124 SupportsUserDataAggregatable() {} | |
125 virtual ~SupportsUserDataAggregatable() {} | |
126 private: | |
127 DISALLOW_COPY_AND_ASSIGN(SupportsUserDataAggregatable); | |
128 }; | |
129 | |
130 // Storage for user data to be accessed only on the DB thread. May | |
131 // be used e.g. for SyncableService subclasses that need to be owned | |
132 // by this object. Is created on first call to |GetDBUserData()|. | |
133 scoped_ptr<SupportsUserDataAggregatable> db_thread_user_data_; | |
134 }; | 109 }; |
135 | 110 |
136 #endif // COMPONENTS_WEBDATA_COMMON_WEB_DATA_SERVICE_BASE_H_ | 111 #endif // COMPONENTS_WEBDATA_COMMON_WEB_DATA_SERVICE_BASE_H_ |
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