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Side by Side Diff: services/preferences/public/cpp/pref_store_client.cc

Issue 2635153002: Pref service: expose all read-only PrefStores through Mojo (Closed)
Patch Set: Merge Created 3 years, 9 months ago
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1 // Copyright 2017 The Chromium Authors. All rights reserved.
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 "services/preferences/public/cpp/pref_store_client.h"
6 #include "mojo/public/cpp/bindings/strong_binding.h"
7 #include "services/preferences/public/cpp/pref_store_impl.h"
8
9 namespace prefs {
10
11 PrefStoreClient::PrefStoreClient(mojom::PrefStoreConnectionPtr connection)
12 : cached_prefs_(std::move(connection->initial_prefs)),
13 initialized_(connection->is_initialized),
14 observer_binding_(this, std::move(connection->observer)) {}
15
16 PrefStoreClient::~PrefStoreClient() = default;
Sam McNally 2017/03/03 03:47:58 Definitions should be in the same order as declara
tibell 2017/03/07 00:52:52 Done.
17
18 void PrefStoreClient::AddObserver(PrefStore::Observer* observer) {
19 observers_.AddObserver(observer);
20 }
21
22 void PrefStoreClient::RemoveObserver(PrefStore::Observer* observer) {
23 observers_.RemoveObserver(observer);
24 }
25
26 bool PrefStoreClient::HasObservers() const {
27 return observers_.might_have_observers();
28 }
29
30 bool PrefStoreClient::IsInitializationComplete() const {
31 return initialized_;
32 }
33
34 bool PrefStoreClient::GetValue(const std::string& key,
35 const base::Value** result) const {
36 DCHECK(initialized_);
37 return cached_prefs_->Get(key, result);
38 }
39
40 std::unique_ptr<base::DictionaryValue> PrefStoreClient::GetValues() const {
41 return cached_prefs_->CreateDeepCopy();
42 }
43
44 void PrefStoreClient::OnPrefChanged(const std::string& key,
45 std::unique_ptr<base::Value> value) {
46 bool changed = false;
47 if (!value) { // Delete
48 if (cached_prefs_->RemovePath(key, nullptr))
49 changed = true;
50 } else {
51 const base::Value* prev;
52 if (cached_prefs_->Get(key, &prev)) {
53 if (!prev->Equals(value.get())) {
54 cached_prefs_->Set(key, std::move(value));
55 changed = true;
56 }
57 } else {
58 cached_prefs_->Set(key, std::move(value));
59 changed = true;
60 }
61 }
62 if (changed) {
63 for (Observer& observer : observers_)
64 observer.OnPrefValueChanged(key);
65 }
66 }
67
68 void PrefStoreClient::OnInitializationCompleted(bool succeeded) {
69 if (!initialized_) {
70 initialized_ = true;
71 for (Observer& observer : observers_)
72 observer.OnInitializationCompleted(true);
73 }
74 }
75
76 } // namespace prefs
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