1 // Copyright 2012 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/default_pref_store.h"
6
7 #include <string_view>
8 #include <utility>
9
10 #include "base/check.h"
11 #include "base/observer_list.h"
12
13 using base::Value;
14
15 DefaultPrefStore::DefaultPrefStore() = default;
16
GetValue(std::string_view key,const Value ** result) const17 bool DefaultPrefStore::GetValue(std::string_view key,
18 const Value** result) const {
19 return prefs_.GetValue(key, result);
20 }
21
GetValues() const22 base::Value::Dict DefaultPrefStore::GetValues() const {
23 return prefs_.AsDict();
24 }
25
AddObserver(PrefStore::Observer * observer)26 void DefaultPrefStore::AddObserver(PrefStore::Observer* observer) {
27 observers_.AddObserver(observer);
28 }
29
RemoveObserver(PrefStore::Observer * observer)30 void DefaultPrefStore::RemoveObserver(PrefStore::Observer* observer) {
31 observers_.RemoveObserver(observer);
32 }
33
HasObservers() const34 bool DefaultPrefStore::HasObservers() const {
35 return !observers_.empty();
36 }
37
SetDefaultValue(std::string_view key,Value value)38 void DefaultPrefStore::SetDefaultValue(std::string_view key, Value value) {
39 DCHECK(!GetValue(key, nullptr));
40 prefs_.SetValue(key, std::move(value));
41 }
42
ReplaceDefaultValue(std::string_view key,Value value)43 void DefaultPrefStore::ReplaceDefaultValue(std::string_view key, Value value) {
44 DCHECK(GetValue(key, nullptr));
45 bool notify = prefs_.SetValue(key, std::move(value));
46 if (notify) {
47 for (Observer& observer : observers_)
48 observer.OnPrefValueChanged(key);
49 }
50 }
51
begin() const52 DefaultPrefStore::const_iterator DefaultPrefStore::begin() const {
53 return prefs_.begin();
54 }
55
end() const56 DefaultPrefStore::const_iterator DefaultPrefStore::end() const {
57 return prefs_.end();
58 }
59
60 DefaultPrefStore::~DefaultPrefStore() = default;
61