ui/views/widget/native_widget.h

   1 // Copyright (c) 2011 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_NATIVE_WIDGET_H_
   6 #define UI_VIEWS_WIDGET_NATIVE_WIDGET_H_
   7
   8 #include "ui/views/widget/widget.h"
   9
  10 namespace views {
  11 namespace internal {
  12 class NativeWidgetPrivate;
  13 }
  14
  15 ////////////////////////////////////////////////////////////////////////////////
  16 // NativeWidget interface
  17 //
  18 //  An interface that serves as the public API base for the
  19 //  internal::NativeWidget interface that Widget uses to communicate with a
  20 //  backend-specific native widget implementation. This is the only component of
  21 //  this interface that is publicly visible, and exists solely for exposure via
  22 //  Widget's native_widget() accessor, which code occasionally static_casts to
  23 //  a known implementation in platform-specific code.
  24 //
  25 class VIEWS_EXPORT NativeWidget {
  26  public:
  27   virtual ~NativeWidget() {}
  28
  29  private:
  30   friend class Widget;
  31
  32   virtual internal::NativeWidgetPrivate* AsNativeWidgetPrivate() = 0;
  33 };
  34
  35 }  // namespace views
  36
  37 #endif  // UI_VIEWS_WIDGET_NATIVE_WIDGET_H_