| // Copyright 2015 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 UI_VIEWS_WIN_WINDOWS_SESSION_CHANGE_OBSERVER_H_ |
| #define UI_VIEWS_WIN_WINDOWS_SESSION_CHANGE_OBSERVER_H_ |
| |
| #include <windows.h> |
| |
| #include "base/callback.h" |
| #include "base/macros.h" |
| |
| namespace views { |
| |
| // Calls the provided callback on WM_WTSSESSION_CHANGE messages along with |
| // managing the tricky business of observing a singleton object. |
| class WindowsSessionChangeObserver { |
| public: |
| typedef base::Callback<void(WPARAM)> WtsCallback; |
| explicit WindowsSessionChangeObserver(const WtsCallback& callback); |
| ~WindowsSessionChangeObserver(); |
| |
| private: |
| class WtsRegistrationNotificationManager; |
| |
| void OnSessionChange(WPARAM wparam); |
| void ClearCallback(); |
| |
| WtsCallback callback_; |
| |
| DISALLOW_COPY_AND_ASSIGN(WindowsSessionChangeObserver); |
| }; |
| |
| } // namespace views |
| |
| #endif // UI_VIEWS_WIN_WINDOWS_SESSION_CHANGE_OBSERVER_H_ |