ui/views/widget/desktop_aura/desktop_window_tree_host_observer_x11.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_VIEWS_WIDGET_DESKTOP_AURA_DESKTOP_WINDOW_TREE_HOST_OBSERVER_X11_H_
   6 #define UI_VIEWS_WIDGET_DESKTOP_AURA_DESKTOP_WINDOW_TREE_HOST_OBSERVER_X11_H_
   7
   8 #include "ui/views/views_export.h"
   9
  10 namespace views {
  11
  12 // Allows for the observation of lower level window events.
  13 class VIEWS_EXPORT DesktopWindowTreeHostObserverX11 {
  14  public:
  15   virtual ~DesktopWindowTreeHostObserverX11() {}
  16
  17   // Called after we receive a MapNotify event (the X11 server has allocated
  18   // resources for it).
  19   virtual void OnWindowMapped(unsigned long xid) = 0;
  20
  21   // Called after we receive an UnmapNotify event (the X11 server has freed
  22   // resources for it).
  23   virtual void OnWindowUnmapped(unsigned long xid) = 0;
  24 };
  25
  26 }  // namespace views
  27
  28 #endif  // UI_VIEWS_WIDGET_DESKTOP_AURA_DESKTOP_WINDOW_TREE_HOST_OBSERVER_X11_H_
  29