| // Copyright 2020 The Chromium OS 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 TYPECD_SESSION_MANAGER_PROXY_H_ |
| #define TYPECD_SESSION_MANAGER_PROXY_H_ |
| |
| #include <string> |
| |
| #include <base/memory/ref_counted.h> |
| #include <base/memory/weak_ptr.h> |
| #include <base/observer_list.h> |
| #include <dbus/bus.h> |
| #include <session_manager/dbus-proxies.h> |
| |
| #include "typecd/session_manager_observer_interface.h" |
| |
| namespace typecd { |
| |
| // A proxy class that listens to DBus signals from the session manager and |
| // notifies a list of registered observers for events. |
| class SessionManagerProxy { |
| public: |
| explicit SessionManagerProxy(scoped_refptr<dbus::Bus> bus); |
| |
| SessionManagerProxy(const SessionManagerProxy&) = delete; |
| SessionManagerProxy& operator=(const SessionManagerProxy&) = delete; |
| |
| ~SessionManagerProxy() = default; |
| |
| void AddObserver(SessionManagerObserverInterface* observer); |
| |
| // Calls the SessionManager IsScreenLocked() D-Bus function and returns the |
| // value returned by it. If there is a D-Bus error, returns false. |
| bool IsScreenLocked(); |
| |
| // Uses the SessionManager RetrieveSessionState() D-Bus function and returns |
| // true if a session is in the "started" state. If there is a D-Bus error, |
| // returns false. |
| bool IsSessionStarted(); |
| |
| private: |
| friend class SessionManagerProxyFuzzer; |
| |
| // Handles the ScreenIsLocked DBus signal. |
| void OnScreenIsLocked(); |
| |
| // Handles the ScreenIsUnlocked DBus signal. |
| void OnScreenIsUnlocked(); |
| |
| // Handles the SessionStateChanged DBus signal. |
| void OnSessionStateChanged(const std::string& state); |
| |
| org::chromium::SessionManagerInterfaceProxy proxy_; |
| base::ObserverList<SessionManagerObserverInterface> observer_list_; |
| base::WeakPtrFactory<SessionManagerProxy> weak_ptr_factory_; |
| }; |
| |
| } // namespace typecd |
| |
| #endif // TYPECD_SESSION_MANAGER_PROXY_H_ |