1// Copyright 2014 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 ATHENA_SCREEN_PUBLIC_WINDOW_MANAGER_OBSERVER_H_ 6#define ATHENA_SCREEN_PUBLIC_WINDOW_MANAGER_OBSERVER_H_ 7 8#include "athena/athena_export.h" 9 10namespace athena { 11 12class ATHENA_EXPORT WindowManagerObserver { 13 public: 14 virtual ~WindowManagerObserver() {} 15 16 // Called immediately before the overview mode is displayed. 17 virtual void OnOverviewModeEnter() = 0; 18 19 // Called immediately after going out of the overview mode. 20 virtual void OnOverviewModeExit() = 0; 21 22 // Called immediately before the split view mode is activated. 23 virtual void OnSplitViewModeEnter() = 0; 24 25 // Called immediately after going out of the split view mode. 26 virtual void OnSplitViewModeExit() = 0; 27}; 28 29} // namespace athena 30 31#endif // ATHENA_SCREEN_PUBLIC_WINDOW_MANAGER_OBSERVER_H_ 32