1 // Copyright 2016 The Chromium Authors
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 #include "components/prefs/in_memory_pref_store.h"
6
7 #include <memory>
8 #include <string>
9 #include <string_view>
10 #include <utility>
11
12 #include "base/observer_list.h"
13 #include "base/values.h"
14
15 InMemoryPrefStore::InMemoryPrefStore() = default;
16
17 InMemoryPrefStore::~InMemoryPrefStore() = default;
18
GetValue(std::string_view key,const base::Value ** value) const19 bool InMemoryPrefStore::GetValue(std::string_view key,
20 const base::Value** value) const {
21 return prefs_.GetValue(key, value);
22 }
23
GetValues() const24 base::Value::Dict InMemoryPrefStore::GetValues() const {
25 return prefs_.AsDict();
26 }
27
GetMutableValue(std::string_view key,base::Value ** value)28 bool InMemoryPrefStore::GetMutableValue(std::string_view key,
29 base::Value** value) {
30 return prefs_.GetValue(key, value);
31 }
32
AddObserver(PrefStore::Observer * observer)33 void InMemoryPrefStore::AddObserver(PrefStore::Observer* observer) {
34 observers_.AddObserver(observer);
35 }
36
RemoveObserver(PrefStore::Observer * observer)37 void InMemoryPrefStore::RemoveObserver(PrefStore::Observer* observer) {
38 observers_.RemoveObserver(observer);
39 }
40
HasObservers() const41 bool InMemoryPrefStore::HasObservers() const {
42 return !observers_.empty();
43 }
44
IsInitializationComplete() const45 bool InMemoryPrefStore::IsInitializationComplete() const {
46 return true;
47 }
48
SetValue(std::string_view key,base::Value value,uint32_t flags)49 void InMemoryPrefStore::SetValue(std::string_view key,
50 base::Value value,
51 uint32_t flags) {
52 if (prefs_.SetValue(key, std::move(value)))
53 ReportValueChanged(key, flags);
54 }
55
SetValueSilently(std::string_view key,base::Value value,uint32_t flags)56 void InMemoryPrefStore::SetValueSilently(std::string_view key,
57 base::Value value,
58 uint32_t flags) {
59 prefs_.SetValue(key, std::move(value));
60 }
61
RemoveValue(std::string_view key,uint32_t flags)62 void InMemoryPrefStore::RemoveValue(std::string_view key, uint32_t flags) {
63 if (prefs_.RemoveValue(key))
64 ReportValueChanged(key, flags);
65 }
66
RemoveValuesByPrefixSilently(std::string_view prefix)67 void InMemoryPrefStore::RemoveValuesByPrefixSilently(std::string_view prefix) {
68 prefs_.ClearWithPrefix(prefix);
69 }
70
ReadOnly() const71 bool InMemoryPrefStore::ReadOnly() const {
72 return false;
73 }
74
GetReadError() const75 PersistentPrefStore::PrefReadError InMemoryPrefStore::GetReadError() const {
76 return PersistentPrefStore::PREF_READ_ERROR_NONE;
77 }
78
ReadPrefs()79 PersistentPrefStore::PrefReadError InMemoryPrefStore::ReadPrefs() {
80 return PersistentPrefStore::PREF_READ_ERROR_NONE;
81 }
82
ReadPrefsAsync(ReadErrorDelegate * error_delegate)83 void InMemoryPrefStore::ReadPrefsAsync(ReadErrorDelegate* error_delegate) {
84 delete error_delegate;
85 }
86
ReportValueChanged(std::string_view key,uint32_t flags)87 void InMemoryPrefStore::ReportValueChanged(std::string_view key,
88 uint32_t flags) {
89 for (Observer& observer : observers_)
90 observer.OnPrefValueChanged(key);
91 }
92
IsInMemoryPrefStore() const93 bool InMemoryPrefStore::IsInMemoryPrefStore() const {
94 return true;
95 }
96
HasReadErrorDelegate() const97 bool InMemoryPrefStore::HasReadErrorDelegate() const {
98 return false;
99 }
100