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>
8 #include <utility>
9
10 #include "base/check.h"
11 #include "base/observer_list.h"
12 #include "base/strings/string_piece.h"
13
14 using base::Value;
15
DefaultPrefStore()16 DefaultPrefStore::DefaultPrefStore() {}
17
GetValue(base::StringPiece key,const Value ** result) const18 bool DefaultPrefStore::GetValue(base::StringPiece key,
19 const Value** result) const {
20 return prefs_.GetValue(key, result);
21 }
22
GetValues() const23 base::Value::Dict DefaultPrefStore::GetValues() const {
24 return prefs_.AsDict();
25 }
26
AddObserver(PrefStore::Observer * observer)27 void DefaultPrefStore::AddObserver(PrefStore::Observer* observer) {
28 observers_.AddObserver(observer);
29 }
30
RemoveObserver(PrefStore::Observer * observer)31 void DefaultPrefStore::RemoveObserver(PrefStore::Observer* observer) {
32 observers_.RemoveObserver(observer);
33 }
34
HasObservers() const35 bool DefaultPrefStore::HasObservers() const {
36 return !observers_.empty();
37 }
38
SetDefaultValue(const std::string & key,Value value)39 void DefaultPrefStore::SetDefaultValue(const std::string& key, Value value) {
40 DCHECK(!GetValue(key, nullptr));
41 prefs_.SetValue(key, std::move(value));
42 }
43
ReplaceDefaultValue(const std::string & key,Value value)44 void DefaultPrefStore::ReplaceDefaultValue(const std::string& key,
45 Value value) {
46 DCHECK(GetValue(key, nullptr));
47 bool notify = prefs_.SetValue(key, std::move(value));
48 if (notify) {
49 for (Observer& observer : observers_)
50 observer.OnPrefValueChanged(key);
51 }
52 }
53
begin() const54 DefaultPrefStore::const_iterator DefaultPrefStore::begin() const {
55 return prefs_.begin();
56 }
57
end() const58 DefaultPrefStore::const_iterator DefaultPrefStore::end() const {
59 return prefs_.end();
60 }
61
~DefaultPrefStore()62 DefaultPrefStore::~DefaultPrefStore() {}
63