athena/wm/public/window_list_provider_observer.h

   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_WM_PUBLIC_WINDOW_LIST_PROVIDER_OBSERVER_H_
   6 #define ATHENA_WM_PUBLIC_WINDOW_LIST_PROVIDER_OBSERVER_H_
   7
   8 #include "athena/athena_export.h"
   9
  10 namespace aura {
  11 class Window;
  12 }
  13
  14 namespace athena {
  15
  16 // An observer to window list changes like e.g. stacking order has changed.
  17 class ATHENA_EXPORT WindowListProviderObserver {
  18  public:
  19   virtual ~WindowListProviderObserver() {}
  20
  21   // The Window stacking has changed.
  22   virtual void OnWindowStackingChanged() = 0;
  23
  24   // The specified Window has been removed from the list. At the time of
  25   // removal, |removed_window| was at the |index| position in the window list.
  26   virtual void OnWindowRemoved(aura::Window* removed_window,
  27                                int index) = 0;
  28 };
  29
  30 }  // namespace athena
  31
  32 #endif  // ATHENA_WM_PUBLIC_WINDOW_LIST_PROVIDER_OBSERVER_H_