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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 #include "base/prefs/overlay_user_pref_store.h" | 5 #include "base/prefs/overlay_user_pref_store.h" |
6 | 6 |
7 #include "base/memory/scoped_ptr.h" | 7 #include "base/memory/scoped_ptr.h" |
8 #include "base/values.h" | 8 #include "base/values.h" |
9 | 9 |
10 OverlayUserPrefStore::OverlayUserPrefStore( | 10 OverlayUserPrefStore::OverlayUserPrefStore( |
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27 | 27 |
28 size_t OverlayUserPrefStore::NumberOfObservers() const { | 28 size_t OverlayUserPrefStore::NumberOfObservers() const { |
29 return observers_.size(); | 29 return observers_.size(); |
30 } | 30 } |
31 | 31 |
32 bool OverlayUserPrefStore::IsInitializationComplete() const { | 32 bool OverlayUserPrefStore::IsInitializationComplete() const { |
33 return underlay_->IsInitializationComplete(); | 33 return underlay_->IsInitializationComplete(); |
34 } | 34 } |
35 | 35 |
36 bool OverlayUserPrefStore::GetValue(const std::string& key, | 36 bool OverlayUserPrefStore::GetValue(const std::string& key, |
37 const Value** result) const { | 37 const base::Value** result) const { |
38 // If the |key| shall NOT be stored in the overlay store, there must not | 38 // If the |key| shall NOT be stored in the overlay store, there must not |
39 // be an entry. | 39 // be an entry. |
40 DCHECK(ShallBeStoredInOverlay(key) || !overlay_.GetValue(key, NULL)); | 40 DCHECK(ShallBeStoredInOverlay(key) || !overlay_.GetValue(key, NULL)); |
41 | 41 |
42 if (overlay_.GetValue(key, result)) | 42 if (overlay_.GetValue(key, result)) |
43 return true; | 43 return true; |
44 return underlay_->GetValue(GetUnderlayKey(key), result); | 44 return underlay_->GetValue(GetUnderlayKey(key), result); |
45 } | 45 } |
46 | 46 |
47 bool OverlayUserPrefStore::GetMutableValue(const std::string& key, | 47 bool OverlayUserPrefStore::GetMutableValue(const std::string& key, |
48 Value** result) { | 48 base::Value** result) { |
49 if (!ShallBeStoredInOverlay(key)) | 49 if (!ShallBeStoredInOverlay(key)) |
50 return underlay_->GetMutableValue(GetUnderlayKey(key), result); | 50 return underlay_->GetMutableValue(GetUnderlayKey(key), result); |
51 | 51 |
52 if (overlay_.GetValue(key, result)) | 52 if (overlay_.GetValue(key, result)) |
53 return true; | 53 return true; |
54 | 54 |
55 // Try to create copy of underlay if the overlay does not contain a value. | 55 // Try to create copy of underlay if the overlay does not contain a value. |
56 Value* underlay_value = NULL; | 56 base::Value* underlay_value = NULL; |
57 if (!underlay_->GetMutableValue(GetUnderlayKey(key), &underlay_value)) | 57 if (!underlay_->GetMutableValue(GetUnderlayKey(key), &underlay_value)) |
58 return false; | 58 return false; |
59 | 59 |
60 *result = underlay_value->DeepCopy(); | 60 *result = underlay_value->DeepCopy(); |
61 overlay_.SetValue(key, *result); | 61 overlay_.SetValue(key, *result); |
62 return true; | 62 return true; |
63 } | 63 } |
64 | 64 |
65 void OverlayUserPrefStore::SetValue(const std::string& key, | 65 void OverlayUserPrefStore::SetValue(const std::string& key, |
66 Value* value) { | 66 base::Value* value) { |
67 if (!ShallBeStoredInOverlay(key)) { | 67 if (!ShallBeStoredInOverlay(key)) { |
68 underlay_->SetValue(GetUnderlayKey(key), value); | 68 underlay_->SetValue(GetUnderlayKey(key), value); |
69 return; | 69 return; |
70 } | 70 } |
71 | 71 |
72 if (overlay_.SetValue(key, value)) | 72 if (overlay_.SetValue(key, value)) |
73 ReportValueChanged(key); | 73 ReportValueChanged(key); |
74 } | 74 } |
75 | 75 |
76 void OverlayUserPrefStore::SetValueSilently(const std::string& key, | 76 void OverlayUserPrefStore::SetValueSilently(const std::string& key, |
77 Value* value) { | 77 base::Value* value) { |
78 if (!ShallBeStoredInOverlay(key)) { | 78 if (!ShallBeStoredInOverlay(key)) { |
79 underlay_->SetValueSilently(GetUnderlayKey(key), value); | 79 underlay_->SetValueSilently(GetUnderlayKey(key), value); |
80 return; | 80 return; |
81 } | 81 } |
82 | 82 |
83 overlay_.SetValue(key, value); | 83 overlay_.SetValue(key, value); |
84 } | 84 } |
85 | 85 |
86 void OverlayUserPrefStore::RemoveValue(const std::string& key) { | 86 void OverlayUserPrefStore::RemoveValue(const std::string& key) { |
87 if (!ShallBeStoredInOverlay(key)) { | 87 if (!ShallBeStoredInOverlay(key)) { |
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173 NamesMap::const_iterator i = | 173 NamesMap::const_iterator i = |
174 overlay_to_underlay_names_map_.find(overlay_key); | 174 overlay_to_underlay_names_map_.find(overlay_key); |
175 return i != overlay_to_underlay_names_map_.end() ? i->second : overlay_key; | 175 return i != overlay_to_underlay_names_map_.end() ? i->second : overlay_key; |
176 } | 176 } |
177 | 177 |
178 bool OverlayUserPrefStore::ShallBeStoredInOverlay( | 178 bool OverlayUserPrefStore::ShallBeStoredInOverlay( |
179 const std::string& key) const { | 179 const std::string& key) const { |
180 return overlay_to_underlay_names_map_.find(key) != | 180 return overlay_to_underlay_names_map_.find(key) != |
181 overlay_to_underlay_names_map_.end(); | 181 overlay_to_underlay_names_map_.end(); |
182 } | 182 } |
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