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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 BASE_PREFS_JSON_PREF_STORE_H_ | 5 #ifndef BASE_PREFS_JSON_PREF_STORE_H_ |
6 #define BASE_PREFS_JSON_PREF_STORE_H_ | 6 #define BASE_PREFS_JSON_PREF_STORE_H_ |
7 | 7 |
8 #include <set> | 8 #include <set> |
9 #include <string> | 9 #include <string> |
10 | 10 |
11 #include "base/basictypes.h" | 11 #include "base/basictypes.h" |
12 #include "base/compiler_specific.h" | 12 #include "base/compiler_specific.h" |
13 #include "base/files/file_path.h" | 13 #include "base/files/file_path.h" |
14 #include "base/files/important_file_writer.h" | 14 #include "base/files/important_file_writer.h" |
15 #include "base/memory/scoped_ptr.h" | 15 #include "base/memory/scoped_ptr.h" |
16 #include "base/message_loop/message_loop_proxy.h" | 16 #include "base/message_loop/message_loop_proxy.h" |
17 #include "base/observer_list.h" | 17 #include "base/observer_list.h" |
18 #include "base/prefs/base_prefs_export.h" | 18 #include "base/prefs/base_prefs_export.h" |
19 #include "base/prefs/persistent_pref_store.h" | 19 #include "base/prefs/persistent_pref_store.h" |
20 | 20 |
| 21 class PrefFilter; |
| 22 |
21 namespace base { | 23 namespace base { |
22 class DictionaryValue; | 24 class DictionaryValue; |
23 class FilePath; | 25 class FilePath; |
24 class SequencedTaskRunner; | 26 class SequencedTaskRunner; |
25 class SequencedWorkerPool; | 27 class SequencedWorkerPool; |
26 class Value; | 28 class Value; |
27 } | 29 } |
28 | 30 |
29 | 31 |
30 // A writable PrefStore implementation that is used for user preferences. | 32 // A writable PrefStore implementation that is used for user preferences. |
31 class BASE_PREFS_EXPORT JsonPrefStore | 33 class BASE_PREFS_EXPORT JsonPrefStore |
32 : public PersistentPrefStore, | 34 : public PersistentPrefStore, |
33 public base::ImportantFileWriter::DataSerializer { | 35 public base::ImportantFileWriter::DataSerializer { |
34 public: | 36 public: |
35 // Returns instance of SequencedTaskRunner which guarantees that file | 37 // Returns instance of SequencedTaskRunner which guarantees that file |
36 // operations on the same file will be executed in sequenced order. | 38 // operations on the same file will be executed in sequenced order. |
37 static scoped_refptr<base::SequencedTaskRunner> GetTaskRunnerForFile( | 39 static scoped_refptr<base::SequencedTaskRunner> GetTaskRunnerForFile( |
38 const base::FilePath& pref_filename, | 40 const base::FilePath& pref_filename, |
39 base::SequencedWorkerPool* worker_pool); | 41 base::SequencedWorkerPool* worker_pool); |
40 | 42 |
41 // |sequenced_task_runner| is must be a shutdown-blocking task runner, ideally | 43 // |sequenced_task_runner| is must be a shutdown-blocking task runner, ideally |
42 // created by GetTaskRunnerForFile() method above. | 44 // created by GetTaskRunnerForFile() method above. |
43 JsonPrefStore(const base::FilePath& pref_filename, | 45 JsonPrefStore(const base::FilePath& pref_filename, |
44 base::SequencedTaskRunner* sequenced_task_runner); | 46 base::SequencedTaskRunner* sequenced_task_runner, |
| 47 scoped_ptr<PrefFilter> pref_filter); |
45 | 48 |
46 // PrefStore overrides: | 49 // PrefStore overrides: |
47 virtual bool GetValue(const std::string& key, | 50 virtual bool GetValue(const std::string& key, |
48 const base::Value** result) const OVERRIDE; | 51 const base::Value** result) const OVERRIDE; |
49 virtual void AddObserver(PrefStore::Observer* observer) OVERRIDE; | 52 virtual void AddObserver(PrefStore::Observer* observer) OVERRIDE; |
50 virtual void RemoveObserver(PrefStore::Observer* observer) OVERRIDE; | 53 virtual void RemoveObserver(PrefStore::Observer* observer) OVERRIDE; |
51 virtual bool HasObservers() const OVERRIDE; | 54 virtual bool HasObservers() const OVERRIDE; |
52 virtual bool IsInitializationComplete() const OVERRIDE; | 55 virtual bool IsInitializationComplete() const OVERRIDE; |
53 | 56 |
54 // PersistentPrefStore overrides: | 57 // PersistentPrefStore overrides: |
(...skipping 25 matching lines...) Expand all Loading... |
80 base::FilePath path_; | 83 base::FilePath path_; |
81 const scoped_refptr<base::SequencedTaskRunner> sequenced_task_runner_; | 84 const scoped_refptr<base::SequencedTaskRunner> sequenced_task_runner_; |
82 | 85 |
83 scoped_ptr<base::DictionaryValue> prefs_; | 86 scoped_ptr<base::DictionaryValue> prefs_; |
84 | 87 |
85 bool read_only_; | 88 bool read_only_; |
86 | 89 |
87 // Helper for safely writing pref data. | 90 // Helper for safely writing pref data. |
88 base::ImportantFileWriter writer_; | 91 base::ImportantFileWriter writer_; |
89 | 92 |
| 93 scoped_ptr<PrefFilter> pref_filter_; |
90 ObserverList<PrefStore::Observer, true> observers_; | 94 ObserverList<PrefStore::Observer, true> observers_; |
91 | 95 |
92 scoped_ptr<ReadErrorDelegate> error_delegate_; | 96 scoped_ptr<ReadErrorDelegate> error_delegate_; |
93 | 97 |
94 bool initialized_; | 98 bool initialized_; |
95 PrefReadError read_error_; | 99 PrefReadError read_error_; |
96 | 100 |
97 std::set<std::string> keys_need_empty_value_; | 101 std::set<std::string> keys_need_empty_value_; |
98 | 102 |
99 DISALLOW_COPY_AND_ASSIGN(JsonPrefStore); | 103 DISALLOW_COPY_AND_ASSIGN(JsonPrefStore); |
100 }; | 104 }; |
101 | 105 |
102 #endif // BASE_PREFS_JSON_PREF_STORE_H_ | 106 #endif // BASE_PREFS_JSON_PREF_STORE_H_ |
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