// Copyright 2013 The Chromium Authors. All rights reserved. // Use of this source code is governed by a BSD-style license that can be // found in the LICENSE file. #ifndef UI_VIEWS_WIDGET_DESKTOP_AURA_DESKTOP_WINDOW_TREE_HOST_OBSERVER_X11_H_ #define UI_VIEWS_WIDGET_DESKTOP_AURA_DESKTOP_WINDOW_TREE_HOST_OBSERVER_X11_H_ #include "ui/views/views_export.h" namespace views { // Allows for the observation of lower level window events. class VIEWS_EXPORT DesktopWindowTreeHostObserverX11 { public: virtual ~DesktopWindowTreeHostObserverX11() {} // Called after we receive a MapNotify event (the X11 server has allocated // resources for it). virtual void OnWindowMapped(unsigned long xid) = 0; // Called after we receive an UnmapNotify event (the X11 server has freed // resources for it). virtual void OnWindowUnmapped(unsigned long xid) = 0; }; } // namespace views #endif // UI_VIEWS_WIDGET_DESKTOP_AURA_DESKTOP_WINDOW_TREE_HOST_OBSERVER_X11_H_