ash/wm/dock/docked_window_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 UI_DOCK_DOCKED_WINDOW_LAYOUT_MANAGER_OBSERVER_H_
   6 #define UI_DOCK_DOCKED_WINDOW_LAYOUT_MANAGER_OBSERVER_H_
   7
   8 #include "ash/ash_export.h"
   9
  10 namespace gfx {
  11 class Rect;
  12 }
  13
  14 namespace ash {
  15
  16 // Observers to the DockedWindowLayoutManager are notified of significant
  17 // events that occur with the docked windows, such as the bounds change.
  18 class ASH_EXPORT DockedWindowLayoutManagerObserver {
  19  public:
  20   // Reason for notification. Allows selectively ignoring notifications to
  21   // prevent a notification loop.
  22   enum Reason {
  23     CHILD_CHANGED,
  24     DISPLAY_RESIZED,
  25     DISPLAY_INSETS_CHANGED,
  26     SHELF_ALIGNMENT_CHANGED,
  27     KEYBOARD_BOUNDS_CHANGING
  28   };
  29   // Called after the dock bounds are changed.
  30   virtual void OnDockBoundsChanging(const gfx::Rect& new_bounds,
  31                                     Reason reason) = 0;
  32
  33  protected:
  34   virtual ~DockedWindowLayoutManagerObserver() {}
  35 };
  36
  37 }  // namespace ash
  38
  39 #endif  // UI_DOCK_DOCKED_WINDOW_LAYOUT_MANAGER_OBSERVER_H_