1 // Copyright 2013 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_WM_WINDOW_STATE_OBSERVER_H_ 6 #define ASH_WM_WINDOW_STATE_OBSERVER_H_ 7 8 #include "ash/ash_export.h" 9 #include "ash/wm/wm_types.h" 10 11 namespace ash { 12 namespace wm { 13 class WindowState; 14 15 class ASH_EXPORT WindowStateObserver { 16 public: 17 // Called when the window's show type has changed. This is different from 18 // kWindowShowStatekey property change as this will be invoked when the window 19 // gets left/right maximized, and auto positioned. |old_type| is the value 20 // before the change. OnWindowShowTypeChanged(WindowState * window_state,WindowShowType old_type)21 virtual void OnWindowShowTypeChanged(WindowState* window_state, 22 WindowShowType old_type) {} 23 }; 24 25 } // namespace wm 26 } // namespace ash 27 28 #endif // ASH_WM_WINDOW_STATE_OBSERVER_H_ 29