ash/shelf/shelf_layout_manager_observer.h

   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_SHELF_SHELF_LAYOUT_MANAGER_OBSERVER_H_
   6 #define ASH_SHELF_SHELF_LAYOUT_MANAGER_OBSERVER_H_
   7
   8 #include "ash/ash_export.h"
   9 #include "ash/shelf/shelf_types.h"
  10
  11 namespace aura {
  12 class RootWindow;
  13 }
  14
  15 namespace ash {
  16
  17 class ASH_EXPORT ShelfLayoutManagerObserver {
  18  public:
  19   virtual ~ShelfLayoutManagerObserver() {}
  20
  21   // Called when the target ShelfLayoutManager will be deleted.
  22   virtual void WillDeleteShelf() {}
  23
  24   // Called when the visibility change is scheduled.
  25   virtual void WillChangeVisibilityState(ShelfVisibilityState new_state) {}
  26
  27   // Called when the auto hide state is changed.
  28   virtual void OnAutoHideStateChanged(ShelfAutoHideState new_state) {}
  29
  30   // Called when the auto hide behavior is changed.
  31   virtual void OnAutoHideBehaviorChanged(aura::RootWindow* root_window,
  32                                          ShelfAutoHideBehavior new_behavior) {}
  33 };
  34
  35 }  // namespace ash
  36
  37 #endif  // ASH_SHELF_SHELF_LAYOUT_MANAGER_OBSERVER_H_