OLD | NEW |
(Empty) | |
| 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 #ifndef SERVICES_PREFERENCES_PUBLIC_CPP_PREF_STORE_MANAGER_IMPL_H_ |
| 6 #define SERVICES_PREFERENCES_PUBLIC_CPP_PREF_STORE_MANAGER_IMPL_H_ |
| 7 |
| 8 #include "base/compiler_specific.h" |
| 9 #include "base/macros.h" |
| 10 #include "base/memory/ref_counted.h" |
| 11 #include "components/prefs/pref_value_store.h" |
| 12 #include "mojo/public/cpp/bindings/binding_set.h" |
| 13 #include "services/preferences/public/interfaces/preferences.mojom.h" |
| 14 #include "services/service_manager/public/cpp/interface_factory.h" |
| 15 #include "services/service_manager/public/cpp/service.h" |
| 16 |
| 17 namespace prefs { |
| 18 |
| 19 // This class mediates the connection of clients who wants to read preferences |
| 20 // and the pref stores that store those preferences. Pref stores use the |
| 21 // |PrefStoreRegistry| interface to register themselves with the manager and |
| 22 // clients use the |PrefStoreConnector| interface to connect to these stores. |
| 23 class PrefStoreManagerImpl |
| 24 : public NON_EXPORTED_BASE(mojom::PrefStoreRegistry), |
| 25 public NON_EXPORTED_BASE(mojom::PrefStoreConnector), |
| 26 public NON_EXPORTED_BASE( |
| 27 service_manager::InterfaceFactory<mojom::PrefStoreConnector>), |
| 28 public NON_EXPORTED_BASE( |
| 29 service_manager::InterfaceFactory<mojom::PrefStoreRegistry>), |
| 30 public NON_EXPORTED_BASE(service_manager::Service) { |
| 31 public: |
| 32 using PrefStoreTypes = std::set<PrefValueStore::PrefStoreType>; |
| 33 |
| 34 // Only replies to Connect calls when all |expected_pref_stores| have |
| 35 // registered. |
| 36 PrefStoreManagerImpl(PrefStoreTypes expected_pref_stores); |
| 37 ~PrefStoreManagerImpl() override; |
| 38 |
| 39 // PrefStores used by Chrome by default. |
| 40 static PrefStoreTypes DefaultStores(); |
| 41 |
| 42 private: |
| 43 // mojom::PrefStoreRegistry: |
| 44 void Register(mojom::PrefStorePtr pref_store_ptr, |
| 45 PrefValueStore::PrefStoreType) override; |
| 46 |
| 47 // mojom::PrefStoreConnector: |
| 48 void Connect(const ConnectCallback& callback) override; |
| 49 |
| 50 // service_manager::InterfaceFactory<PrefStoreConnector>: |
| 51 void Create(const service_manager::Identity& remote_identity, |
| 52 prefs::mojom::PrefStoreConnectorRequest request) override; |
| 53 |
| 54 // service_manager::InterfaceFactory<PrefStoreRegistry>: |
| 55 void Create(const service_manager::Identity& remote_identity, |
| 56 prefs::mojom::PrefStoreRegistryRequest request) override; |
| 57 |
| 58 // service_manager::Service: |
| 59 void OnStart() override; |
| 60 bool OnConnect(const service_manager::ServiceInfo& remote_info, |
| 61 service_manager::InterfaceRegistry* registry) override; |
| 62 |
| 63 // Have all the expected PrefStores connected? |
| 64 bool AllConnected() const; |
| 65 |
| 66 // Used to make sure all pref stores have been registered before replying to |
| 67 // any Connect calls. |
| 68 class ConnectionBarrier; |
| 69 |
| 70 // PrefStores that need to register before replying to any Connect calls. |
| 71 PrefStoreTypes expected_pref_stores_; |
| 72 |
| 73 using PrefStorePtrs = |
| 74 std::unordered_map<PrefValueStore::PrefStoreType, mojom::PrefStorePtr>; |
| 75 |
| 76 // Registered pref stores. |
| 77 PrefStorePtrs pref_store_ptrs_; |
| 78 |
| 79 mojo::BindingSet<mojom::PrefStoreConnector> connector_bindings_; |
| 80 mojo::BindingSet<mojom::PrefStoreRegistry> registry_bindings_; |
| 81 |
| 82 // We hold on to the connection request callbacks until all expected |
| 83 // PrefStores have registered. |
| 84 std::vector<ConnectCallback> pending_callbacks_; |
| 85 |
| 86 DISALLOW_COPY_AND_ASSIGN(PrefStoreManagerImpl); |
| 87 }; |
| 88 |
| 89 } // namespace prefs |
| 90 |
| 91 #endif // SERVICES_PREFERENCES_PUBLIC_CPP_PREF_STORE_MANAGER_IMPL_H_ |
OLD | NEW |