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 ASH_TRAY_ACTION_TRAY_ACTION_OBSERVER_H_ 6 #define ASH_TRAY_ACTION_TRAY_ACTION_OBSERVER_H_ 7 8 #include "ash/ash_export.h" 9 #include "ash/public/mojom/tray_action.mojom.h" 10 11 namespace ash { 12 13 class ASH_EXPORT TrayActionObserver { 14 public: ~TrayActionObserver()15 virtual ~TrayActionObserver() {} 16 17 // Called when action handler state changes. 18 virtual void OnLockScreenNoteStateChanged(mojom::TrayActionState state) = 0; 19 }; 20 21 } // namespace ash 22 23 #endif // ASH_TRAY_ACTION_TRAY_ACTION_OBSERVER_H_ 24