ui/aura/root_window_observer.h

   1 // Copyright (c) 2012 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_AURA_ROOT_WINDOW_OBSERVER_H_
   6 #define UI_AURA_ROOT_WINDOW_OBSERVER_H_
   7
   8 #include "ui/aura/aura_export.h"
   9
  10 namespace gfx {
  11 class Point;
  12 class Size;
  13 }
  14
  15 namespace aura {
  16 class RootWindow;
  17 class Window;
  18
  19 class AURA_EXPORT RootWindowObserver {
  20  public:
  21   // Invoked after the RootWindow's host has been resized.
  22   virtual void OnWindowTreeHostResized(const RootWindow* root) {}
  23
  24   // Invoked after the RootWindow's host has been moved on screen.
  25   virtual void OnWindowTreeHostMoved(const RootWindow* root,
  26                                      const gfx::Point& new_origin) {}
  27
  28   // Invoked when the native windowing system sends us a request to close our
  29   // window.
  30   virtual void OnWindowTreeHostCloseRequested(const RootWindow* root) {}
  31
  32   // Invoked when the keyboard mapping has changed.
  33   virtual void OnKeyboardMappingChanged(const RootWindow* root) {}
  34
  35  protected:
  36   virtual ~RootWindowObserver() {}
  37 };
  38
  39 }  // namespace aura
  40
  41 #endif  // UI_AURA_ROOT_WINDOW_OBSERVER_H_