Index: services/preferences/public/cpp/pref_store_manager_impl.h |
diff --git a/services/preferences/public/cpp/pref_store_manager_impl.h b/services/preferences/public/cpp/pref_store_manager_impl.h |
new file mode 100644 |
index 0000000000000000000000000000000000000000..4af0994985cea8091147229475006c5d9f0a6116 |
--- /dev/null |
+++ b/services/preferences/public/cpp/pref_store_manager_impl.h |
@@ -0,0 +1,91 @@ |
+// Copyright 2017 The Chromium Authors. All rights reserved. |
+// Use of this source code is governed by a BSD-style license that can be |
+// found in the LICENSE file. |
+ |
+#ifndef SERVICES_PREFERENCES_PUBLIC_CPP_PREF_STORE_MANAGER_IMPL_H_ |
+#define SERVICES_PREFERENCES_PUBLIC_CPP_PREF_STORE_MANAGER_IMPL_H_ |
+ |
+#include "base/compiler_specific.h" |
+#include "base/macros.h" |
+#include "base/memory/ref_counted.h" |
+#include "components/prefs/pref_value_store.h" |
+#include "mojo/public/cpp/bindings/binding_set.h" |
+#include "services/preferences/public/interfaces/preferences.mojom.h" |
+#include "services/service_manager/public/cpp/interface_factory.h" |
+#include "services/service_manager/public/cpp/service.h" |
+ |
+namespace prefs { |
+ |
+// This class mediates the connection of clients who wants to read preferences |
+// and the pref stores that store those preferences. Pref stores use the |
+// |PrefStoreRegistry| interface to register themselves with the manager and |
+// clients use the |PrefStoreConnector| interface to connect to these stores. |
+class PrefStoreManagerImpl |
+ : public NON_EXPORTED_BASE(mojom::PrefStoreRegistry), |
+ public NON_EXPORTED_BASE(mojom::PrefStoreConnector), |
+ public NON_EXPORTED_BASE( |
+ service_manager::InterfaceFactory<mojom::PrefStoreConnector>), |
+ public NON_EXPORTED_BASE( |
+ service_manager::InterfaceFactory<mojom::PrefStoreRegistry>), |
+ public NON_EXPORTED_BASE(service_manager::Service) { |
+ public: |
+ using PrefStoreTypes = std::set<PrefValueStore::PrefStoreType>; |
+ |
+ // Only replies to Connect calls when all |expected_pref_stores| have |
+ // registered. |
+ PrefStoreManagerImpl(PrefStoreTypes expected_pref_stores); |
+ ~PrefStoreManagerImpl() override; |
+ |
+ // PrefStores used by Chrome by default. |
+ static PrefStoreTypes DefaultStores(); |
+ |
+ private: |
+ // mojom::PrefStoreRegistry: |
+ void Register(mojom::PrefStorePtr pref_store_ptr, |
+ PrefValueStore::PrefStoreType) override; |
+ |
+ // mojom::PrefStoreConnector: |
+ void Connect(const ConnectCallback& callback) override; |
+ |
+ // service_manager::InterfaceFactory<PrefStoreConnector>: |
+ void Create(const service_manager::Identity& remote_identity, |
+ prefs::mojom::PrefStoreConnectorRequest request) override; |
+ |
+ // service_manager::InterfaceFactory<PrefStoreRegistry>: |
+ void Create(const service_manager::Identity& remote_identity, |
+ prefs::mojom::PrefStoreRegistryRequest request) override; |
+ |
+ // service_manager::Service: |
+ void OnStart() override; |
+ bool OnConnect(const service_manager::ServiceInfo& remote_info, |
+ service_manager::InterfaceRegistry* registry) override; |
+ |
+ // Have all the expected PrefStores connected? |
+ bool AllConnected() const; |
+ |
+ // Used to make sure all pref stores have been registered before replying to |
+ // any Connect calls. |
+ class ConnectionBarrier; |
+ |
+ // PrefStores that need to register before replying to any Connect calls. |
+ PrefStoreTypes expected_pref_stores_; |
+ |
+ using PrefStorePtrs = |
+ std::unordered_map<PrefValueStore::PrefStoreType, mojom::PrefStorePtr>; |
+ |
+ // Registered pref stores. |
+ PrefStorePtrs pref_store_ptrs_; |
+ |
+ mojo::BindingSet<mojom::PrefStoreConnector> connector_bindings_; |
+ mojo::BindingSet<mojom::PrefStoreRegistry> registry_bindings_; |
+ |
+ // We hold on to the connection request callbacks until all expected |
+ // PrefStores have registered. |
+ std::vector<ConnectCallback> pending_callbacks_; |
+ |
+ DISALLOW_COPY_AND_ASSIGN(PrefStoreManagerImpl); |
+}; |
+ |
+} // namespace prefs |
+ |
+#endif // SERVICES_PREFERENCES_PUBLIC_CPP_PREF_STORE_MANAGER_IMPL_H_ |