| // Copyright (c) 2012 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 POWER_MANAGER_POWERD_SYSTEM_INPUT_OBSERVER_H_ |
| #define POWER_MANAGER_POWERD_SYSTEM_INPUT_OBSERVER_H_ |
| |
| #include "power_manager/common/power_constants.h" |
| |
| namespace power_manager { |
| namespace system { |
| |
| // Interface for classes interested in observing input events announced by the |
| // InputWatcher class. |
| class InputObserver { |
| public: |
| virtual ~InputObserver() {} |
| |
| // Called when the lid is opened or closed. LidState::NOT_PRESENT will never |
| // be passed. |
| virtual void OnLidEvent(LidState state) = 0; |
| |
| // Called when the tablet mode changes. TabletMode::UNSUPPORTED will never be |
| // passed. |
| virtual void OnTabletModeEvent(TabletMode mode) = 0; |
| |
| // Called when a power button event occurs. |
| virtual void OnPowerButtonEvent(ButtonState state) = 0; |
| |
| // Called when the user's hands start or stop hovering over the touchpad. |
| virtual void OnHoverStateChange(bool hovering) = 0; |
| }; |
| |
| } // namespace system |
| } // namespace power_manager |
| |
| #endif // POWER_MANAGER_POWERD_SYSTEM_INPUT_OBSERVER_H_ |